1. A chemical injection pump (100) for dosing chemical in the gaseous substance(s) comprising a) a flange (3) - having an internal cavity originating from a peripheral opening (3.1) with a valve for entry and exit of actuation gas towards a pump upper part (2), - having a tubular channel (3.2) for passage and movement of a stroke stud (8), - having a lower surface with a grove for partially accommodating a gasket (4); b) a stuffing box (3.3) centrally located at the lower end of said flange (3); c) an up-down moving stroke stud (8) inside said tubular channel (3.2) of the flange (3) - having designation for the quantity or volume of the chemical to be dosed through the pump (100) and - having its lower tip opposed to a piston rod assembly (10) restricting its upward movement; - having a threaded nut (3.4) at lower tip for accommodating said stuffing box and gland packing and the threads of said stroke stud (8); d) the pump upper part (2) - having a peripheral body holding said piston rod assembly (10) with its upper end opposed to lower tip of said stroke stud (8), said peripheral body having an upper end surface with a grove complimentary to the grove of the lower surface of said flange (3) for accommodating remaining of said gasket (4) and said peripheral body ending in a flat lower end surface with tubular channel for passage and movement of said piston rod assembly (10) and having a grove for partially accommodating another gasket (4), - connected to the said flange (3) at its upper end surface, - allowing inside the entry of said stroke stud (8), and - allowing inside the entry and exit of said actuation gas from the flange peripheral opening (3.1); e) a pump lower part (1) - having a peripheral body holding bellow with hydraulic oil (13) beneath said piston rod assembly (10), said peripheral body having an upper end surface with a grove complimentary to the grove of said lower end surface of said pump upper part (2) for accommodating remaining of said another gasket (4), and said peripheral body ending in a flat lower end surface, and - connected to the said pump upper part (2) at its upper end surface through socket head screws (7), - having an inlet (1.1) and an outlet (1.2) for entrance and exit of the chemical to be dosed.

2. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 1, wherein said valve for entry and exit of actuation gas is a three-way solenoid valve.

3. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 1, wherein said tubular channel (3.2) and said stroke stud (8) have complimentary threads for engagement.

4. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 1, wherein said lower surface of flange (3), said grove and said gasket (4) are in circular shapes.

5. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 1, wherein said designations for the quantity or volume are marked on the upper peripheral surface of the stroke stud (8).

6. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 1, wherein said stuffing box and gland packing is accommodated at the lower tip of said stroke stud (8) by said threaded nut (3.4) with a washer or a back ring (3.5).

7. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 1, wherein said piston rod assembly (10) has a piston head (6), a compressed spring (9) and a stopper bottom.

8. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 7, wherein said bellow with hydraulic oil (13) in the pump lower part (1) is beneath the stopper bottom of said piston rod assembly (10).

9. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 1, wherein said pump upper part (2) is connected to said flange (3) at its upper end surface through socket head screws (7).

10. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 1, wherein said pump upper part (2), said pump lower part (1), said gasket (4) and said another gasket (4) are in circular shapes.

11. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 1, wherein said pump lower part (1) is connected to the said pump upper part (2) at its upper end surface through socket head screws (7).

12. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 1, wherein said pump lower part (1) has vents (1.3) for flushing and first trial run in closed loop running of the system.

13. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 1, wherein said inlet (1.1) for entrance of chemical is connected to the chemical storage tank.

14. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 1, wherein said flange (3), said pump upper part (2) and said pump lower part (1) are made from stainless steel SS 316 grade

15. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 1, wherein the chemical is dosed by a) adjusting the designation on stroke stud (8) for selecting the quantity or volume of the chemical to be dosed through the pump (100); b) filling the chemical to be dosed in the pump lower part (1) through the inlet (1.1); c) filling the actuation gas inside pump upper part (2) through the peripheral opening (3.1) of said flange (3) thereby releasing the chemical to be dosed through the outlet (1.2) of said pump lower part (1). Dated this 29th day of December, 2023 Signature: To be digitally signed by Adv. (Mr.) Parag M. More Partner, More & Kadam Legal Associates Agent for applicant (Regn. No.: IN/PA 1688) On behalf of applicant

Description:FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
&
The Patents Rules, 2003
PROVISIONAL/COMPLETE SPECIFICATION
(See section 10 and rule 13)
1. TITLE OF THE INVENTION:
A CHEMICAL INJECTION PUMP FOR DOSING CHEMICAL IN THE GASEOUS SUBSTANCE(S)

2. APPLICANT(S):
a. NAME: SV GAS SOLUTIONS PVT. LTD.
b. NATIONALITY: INDIA
c. ADDRESS: Office No. 411, A-Wing, Express zone, W. E. Highway, Goregaon (East), Mumbai - 400063, Maharashtra, India

3. PREAMBLE TO THE DESCRIPTION:


FIELD OF INVENTION:
The present invention relates to chemical injection pumps designed specifically for dosing the chemical in the gaseous substance(s). More specifically, it addresses the safe and precise injection of chemicals into a gas.

BACKGROUND OF THE INVENTION:
The present invention relates to an improved chemical injection pump designed specifically for the dosing chemical(s) in to the gaseous substance(s). It finds its application in vast areas including in the odorization of natural gas. Chemical injection pumps are extensively employed for injecting chemicals, such as corrosion inhibitors, methanol, odorants, defoamers, and anti-foamers, at high pressures and in precise measured quantities. These pumps find applications in stationary storage tanks as well as flowing pipelines that transport liquid or gaseous fluids.

In some gaseous substances like natural gas, odorization is a critical process to ensure the safety of its usage. Natural gas, being odorless, colorless, combustible, and highly explosive, poses significant risks if undetected. To mitigate these risks, the Petroleum and Natural Gas Regulatory Board (PNGRB) T4S Regulations mandate the addition of odorants to natural gas before it is distributed to end customers. This ensures that natural gas is readily detectable by its distinctive and unpleasant odor even at concentrations below the lower explosive limit (LEL), thus allowing timely leak detection by human senses.

The odorization of natural gas is essential to mitigate the safety risks associated with its odorless, colorless, combustible, and highly explosive properties. This process involves the addition of odorants to natural gas to confer a distinctive and unpleasant odor, allowing individuals to detect its presence even at concentrations below the lower explosive limit (LEL). Compliance with regulatory standards, such as the Code of Federal Regulations Title 49 Part 192.625, necessitates ensuring that natural gas is odorized sufficiently to be readily detectable by a normal sense of smell at one fifth of its LEL.

The LEL for natural gas in an air mixture is approximately 5%. Therefore, to meet regulatory standards, the presence of natural gas must be detectable at one fifth of that LEL, which translates to 1% gas in the presence of air.

The invention addresses need for the system for the safe and precise injection of chemicals into a gas. It finds a major advantage in odorization of natural gas. By the chemical injection pump (100) of the current invention, the odorant(s) can be safely and precisely injected into a gas pipeline to ensure the detectability of gas leaks through human olfaction. The improved chemical injection pump described herein can be efficiently used for the odorization of natural gas, addressing the safety concerns associated with its odorless and highly explosive nature. This pump allows the controlled injection of chemical(s) into the gas pipelines.

SUMMARY OF THE INVENTION
The invention in first aspect relates to a chemical injection pump (100) for dosing chemical in the gaseous substance(s). It mainly comprises a flange (3), a stuffing box centrally located at the lower end of said flange (3), a stroke stud (8) moving up-down inside the tubular channel (3.2) of the flange (3), a pump upper part (2) connected to the said flange (3) at its upper end surface and a pump lower part (1) connected to the said pump upper part (2) at its upper end surface and having an inlet (1.1) and an outlet (1.2) for entrance and exit of the chemical to be dosed. Said flange (3) and the said pump upper part (2) and said pump lower part (1) are sequentially connected with each other by the complimentary contact surfaces having grooves to accommodate the gaskets (4) for snuggly fitting and preventing the leakage of gases, chemicals etc. which otherwise frequently occur due to the degradation of gaskets. In fact, the gasket life is also enhanced in this novel pump system.

Accordingly, the chemical injection pump (100) for dosing chemical in the gaseous substance(s) comprises
a) a flange (3)
- having an internal cavity originating from a peripheral opening (3.1) with a valve for entry and exit of actuation gas towards a pump upper part (2),
- having a tubular channel (3.2) for passage and movement of a stroke stud (8),
- having a lower surface with a grove for partially accommodating a gasket (4);
b) a stuffing box (3.3) centrally located at the lower end of said flange (3);
c) an up-down moving stroke stud (8) inside said tubular channel (3.2) of the flange (3)
- having designation for the quantity or volume of the chemical to be dosed through the pump (100) and
- having its lower tip opposed to a piston rod assembly (10) restricting its upward movement;
- having a threaded nut (3.4) at lower tip for accommodating said stuffing box and gland packing and the threads of said stroke stud (8);
d) the pump upper part (2)
- having a peripheral body holding said piston rod assembly (10) with its upper end opposed to lower tip of said stroke stud (8), said peripheral body having an upper end surface with a grove complimentary to the grove of the lower surface of said flange (3) for accommodating remaining of said gasket (4) and said peripheral body ending in a flat lower end surface with tubular channel for passage and movement of said piston rod assembly (10) and having a grove for partially accommodating another gasket (4),
- connected to the said flange (3) at its upper end surface,
- allowing inside the entry of said stroke stud (8), and
- allowing inside the entry and exit of said actuation gas from the flange peripheral opening (3.1);
e) a pump lower part (1)
- having a peripheral body holding bellow with hydraulic oil (13) beneath said piston rod assembly (10), said peripheral body having an upper end surface with a grove complimentary to the grove of said lower end surface of said pump upper part (2) for accommodating remaining of said another gasket (4), and said peripheral body ending in a flat lower end surface, and
- connected to the said pump upper part (2) at its upper end surface through socket head screws (7),
- having an inlet (1.1) and an outlet (1.2) for entrance and exit of the chemical to be dosed.
In another aspect of the invention, it the chemical is dosed by said pump (100) by
a) adjusting the designation on stroke stud (8) for selecting the quantity or volume of the chemical to be dosed through the pump (100);
b) filling the chemical to be dosed in the pump lower part (1) through the inlet (1.1);
c) filling the actuation gas inside pump upper part (2) through the peripheral opening (3.1) of said flange (3) thereby releasing the chemical to be dosed through the outlet (1.2) of said pump lower part (1).

BRIEF DESCRIPTION OF DRAWINGS
The embodiments herein will be better understood from the following detailed description with reference to the drawings, in which the reference numerals indicate:
Reference numeral Component
100 a chemical injection pump
3 a flange
3.1 a peripheral opening of the flange (3)
2 a pump upper part
3.2 a tubular channel in the flange (3)
8 a stroke stud
4 a gasket
3.3 a stuffing box at the lower end of the flange (3)
3.5 a washer (back ring)
10 a piston rod assembly opposed to the lower end of the stroke stud (8)
6 the piston head part of piston rod assembly (10)
5 the stopper bottom part of piston rod assembly (10)
9 a compressed spring in the piston rod assembly (10)
3.4 a threaded nut at lower tip the stroke stud (8)
1 a pump lower part
13 bellow with hydraulic oil beneath the piston rod assembly (10)
1.1 an inlet for entrance of the chemical inside the pump lower part (1)
1.2 an outlet for exit of the chemical from the pump lower part (1)
1.3 Vents in the pump lower part (1)
7 socket head screws

FIGURE 1 illustrates the vertical sectional view and outer view of the chemical injection pump (100) of the current invention;
FIGURE 2 illustrates the outer and vertical sectional view of the conventional chemical injection pump;
FIGURES 3.1, 3.2 and 3.3 illustrate the exploded view of the chemical injection pump (100) of the current invention; and
FIGURE 4 illustrate the direction of actuation gas pushing down the piston rod assembly, the position of washer (back ring) (3.5) holding the stuffing box (3.3) and also assisting the leakproof construction of the chemical injection pump (100) of the current invention.

DETAILED DESCRIPTION OF THE INVENTION:
The invention addresses need for the system for the safe and precise injection of chemicals into a gas. It finds a major advantage in odorization of natural gas. The invention further encompasses mechanisms for controlling the flowrate of injected odorants per stroke, gas-tight sealing for preventing chemical leakage, and an innovative flange design to enhance sealing efficiency.

The pump incorporates a novel stroke measurement control mechanism, which facilitates the regulation of the flowrate per stroke. This innovation addresses a significant limitation of earlier designs that lacked the ability to control the dosage accurately. By adjusting the stroke length, the pump can precisely inject a desired quantity of odorant into the natural gas pipeline, preventing overdosing or under dosing. This control mechanism ensures compliance with regulatory standards requiring one fifth of the LEL detection capability.

Furthermore, the pump features a stopper with a special gas-tight seal, ensuring the integrity of the injection process and preventing leakage of the dosing chemicals. The addition of a special tongue and groove type flange design further enhances the sealing capability of the pump.

In summary, the improved chemical injection pump offers a reliable and controlled solution for dosing the chemical(s) in the gaseous substance(s). Its stroke measurement control mechanism, gas-tight seal stopper, and unique flange design collectively provide an effective and safe means of injecting chemicals into the gas stream.

By adhering to the regulatory odorization standards and ensuring the detectability of natural gas at one fifth of its lower explosive limit, this invention contributes significantly to the safety of natural gas distribution and usage.

Accordingly, the invention in first aspect relates to a chemical injection pump (100) for dosing chemical in the gaseous substance(s) that comprises
a) a flange (3)
- having an internal cavity originating from a peripheral opening (3.1) with a valve for entry and exit of actuation gas towards a pump upper part (2),
- having a tubular channel (3.2) for passage and movement of a stroke stud (8),
- having a lower surface with a grove for partially accommodating a gasket (4);
b) a stuffing box (3.3) centrally located at the lower end of said flange (3);
c) an up-down moving stroke stud (8) inside said tubular channel (3.2) of the flange (3)
- having designation for the quantity or volume of the chemical to be dosed through the pump (100) and
- having its lower tip opposed to a piston rod assembly (10) restricting its upward movement;
- having a threaded nut (3.4) at lower tip for accommodating said stuffing box and gland packing and the threads of said stroke stud (8);
d) the pump upper part (2)
- having a peripheral body holding said piston rod assembly (10) with its upper end opposed to lower tip of said stroke stud (8), said peripheral body having an upper end surface with a grove complimentary to the grove of the lower surface of said flange (3) for accommodating remaining of said gasket (4) and said peripheral body ending in a flat lower end surface with tubular channel for passage and movement of said piston rod assembly (10) and having a grove for partially accommodating another gasket (4),
- connected to the said flange (3) at its upper end surface,
- allowing inside the entry of said stroke stud (8), and
- allowing inside the entry and exit of said actuation gas from the flange peripheral opening (3.1);
e) a pump lower part (1)
- having a peripheral body holding bellow with hydraulic oil (13) beneath said piston rod assembly (10), said peripheral body having an upper end surface with a grove complimentary to the grove of said lower end surface of said pump upper part (2) for accommodating remaining of said another gasket (4), and said peripheral body ending in a flat lower end surface, and
- connected to the said pump upper part (2) at its upper end surface through socket head screws (7),
- having an inlet (1.1) and an outlet (1.2) for entrance and exit of the chemical to be dosed.
Preferably, the valve for entry and exit of actuation gas is a three-way solenoid valve. Further, said tubular channel (3.2) and said stroke stud (8) have complimentary threads for engagement. Though the invention is not limited by the shape, in one preferred embodiment, said lower surface of flange (3), said grove and said gasket (4) are in circular shapes. In another embodiment, said pump upper part (2), said pump lower part (1), said gasket (4) and said another gasket (4) are in circular shapes.
In another preferred embodiment, said designations for the quantity or volume are marked on the upper peripheral surface of the stroke stud (8). They can be engraved markings or printed indicators corresponding to the quantity or volume of the chemical to be dosed.
In another embodiment of the invention, the stuffing box and gland packing is accommodated at the lower tip of said stroke stud (8) by said threaded nut (3.4) with a washer or a back ring (3.5).
In yet another embodiment, said piston rod assembly (10) has a piston head (6), a compressed spring (9) and a stopper bottom. Said bellow with hydraulic oil (13) in the pump lower part (1) is beneath the stopper bottom of said piston rod assembly (10).
Though the pump may have a continuous unitary structure, for maintenance prospective, it may be easy to have detachable parts. Accordingly, in the preferred embodiment, said pump upper part (2) is connected to said flange (3) at its upper end surface through socket head screws (7). Similarly, said pump lower part (1) is connected to the said pump upper part (2) at its upper end surface through socket head screws (7).
In yet another preferred embodiment, said pump lower part (1) has vents (1.3) for flushing and trial run in closed loop running of the system.
In preferred embodiment, the inlet (1.1) for entrance of chemical is connected to the chemical storage tank.
Said flange (3), said pump upper part (2) and said pump lower part (1) are made from any suitable material that is compatible with the actuation gas and the chemical to be dosed. In case of pump to be used for odorization of the natural gas, said components are made from the material suitable for the application of chemical with corrosive properties such as stainless steel SS 316 grade
Using the chemical injection pump (100), the chemical is dosed is the gaseous substance(s) by
a) adjusting the designation on stroke stud (8) for selecting the quantity or volume of the chemical to be dosed through the pump (100);
b) filling the chemical to be dosed in the pump lower part (1) through the inlet (1.1);
c) filling the actuation gas inside pump upper part (2) through the peripheral opening (3.1) of said flange (3) thereby releasing the chemical to be dosed through the outlet (1.2) of said pump lower part (1).

In this process, the actuation gas enters into the pump assembly through the opening (3.1) of flange (3) and it is directed towards and strikes on the piston rod assembly (10). Due to this, the piston rod assembly (10) is displaced down giving high pressure on the bellow with hydraulic oil (13) causing its expansion in pump lower part (1) in which the chemical to be dosed is stored. The chemical is pushed outside through the outlet (1.2) at high pressure created by the actuation gas and exerted through the bellow with hydraulic oil (13). This outlet (1.2) is usually connected to the dosing line into the main gas pipeline through tube and valve injection quills.
After dosing of chemical, the pump lower part (1) would get empty and at the same time the pressure will get released as the actuation gas will release from the 3 way solenoid valve through the opening (3.1) of the flange (3). Due to spring action (9) the piston rod assembly (10) will move upside and the below oil (13) will contract and due to its contraction, it will suck the chemical inside the pump lower part (1) for next dozing cycle through the inlet (1.1) from chemical storage tank.

As mentioned, the stroke stud (8) has marking on it to designate the quantity or volume of the chemical that to be dosed meaning the quantity or volume of the chemical that is sucked inside and dosed through said pump lower part (1). Therefore, the dose/quantity of the chemical to be dispensed through the pump lower part (2) is controlled by the stroke stud (8) at the pump upper part (1) and moving throughout the central part of the flange (3). Said stroke stud (8) restrict the upward movement of piston rod assembly (10) by opposing its movement through the lower tip end of said stroke stud (8).
Tong and groove type seal:
In earlier pumps for fitting the separable parts, Teflon gasket was used. It was sandwiched between the flange - pump upper part/pump upper part – pump lower part. But due to high pressure, soft Teflon gasket used to expand and lose the strength resulting into leakages of gas, oil, chemical.
To mitigate this limitation, current invention provides male female complementary surface pattern on the connectable surfaces of the flange (3), the pump upper part (2) and the pump lower part (1). This complementary surface pattern has groove to completely accommodate a ring-shaped Teflon gasket which avoids its expansion, retains the strength. Thus, the parts are snugly fit and prevent the gas, oil, chemical leakage.
, Claims:Claims:
I/We claim:
1. A chemical injection pump (100) for dosing chemical in the gaseous substance(s) comprising
a) a flange (3)
- having an internal cavity originating from a peripheral opening (3.1) with a valve for entry and exit of actuation gas towards a pump upper part (2),
- having a tubular channel (3.2) for passage and movement of a stroke stud (8),
- having a lower surface with a grove for partially accommodating a gasket (4);
b) a stuffing box (3.3) centrally located at the lower end of said flange (3);
c) an up-down moving stroke stud (8) inside said tubular channel (3.2) of the flange (3)
- having designation for the quantity or volume of the chemical to be dosed through the pump (100) and
- having its lower tip opposed to a piston rod assembly (10) restricting its upward movement;
- having a threaded nut (3.4) at lower tip for accommodating said stuffing box and gland packing and the threads of said stroke stud (8);
d) the pump upper part (2)
- having a peripheral body holding said piston rod assembly (10) with its upper end opposed to lower tip of said stroke stud (8), said peripheral body having an upper end surface with a grove complimentary to the grove of the lower surface of said flange (3) for accommodating remaining of said gasket (4) and said peripheral body ending in a flat lower end surface with tubular channel for passage and movement of said piston rod assembly (10) and having a grove for partially accommodating another gasket (4),
- connected to the said flange (3) at its upper end surface,
- allowing inside the entry of said stroke stud (8), and
- allowing inside the entry and exit of said actuation gas from the flange peripheral opening (3.1);
e) a pump lower part (1)
- having a peripheral body holding bellow with hydraulic oil (13) beneath said piston rod assembly (10), said peripheral body having an upper end surface with a grove complimentary to the grove of said lower end surface of said pump upper part (2) for accommodating remaining of said another gasket (4), and said peripheral body ending in a flat lower end surface, and
- connected to the said pump upper part (2) at its upper end surface through socket head screws (7),
- having an inlet (1.1) and an outlet (1.2) for entrance and exit of the chemical to be dosed.
2. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 1, wherein said valve for entry and exit of actuation gas is a three-way solenoid valve.
3. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 1, wherein said tubular channel (3.2) and said stroke stud (8) have complimentary threads for engagement.
4. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 1, wherein said lower surface of flange (3), said grove and said gasket (4) are in circular shapes.
5. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 1, wherein said designations for the quantity or volume are marked on the upper peripheral surface of the stroke stud (8).
6. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 1, wherein said stuffing box and gland packing is accommodated at the lower tip of said stroke stud (8) by said threaded nut (3.4) with a washer or a back ring (3.5).
7. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 1, wherein said piston rod assembly (10) has a piston head (6), a compressed spring (9) and a stopper bottom.
8. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 7, wherein said bellow with hydraulic oil (13) in the pump lower part (1) is beneath the stopper bottom of said piston rod assembly (10).
9. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 1, wherein said pump upper part (2) is connected to said flange (3) at its upper end surface through socket head screws (7).
10. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 1, wherein said pump upper part (2), said pump lower part (1), said gasket (4) and said another gasket (4) are in circular shapes.
11. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 1, wherein said pump lower part (1) is connected to the said pump upper part (2) at its upper end surface through socket head screws (7).
12. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 1, wherein said pump lower part (1) has vents (1.3) for flushing and first trial run in closed loop running of the system.
13. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 1, wherein said inlet (1.1) for entrance of chemical is connected to the chemical storage tank.
14. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 1, wherein said flange (3), said pump upper part (2) and said pump lower part (1) are made from stainless steel SS 316 grade
15. The chemical injection pump (100) for dosing chemical in the gaseous substance(s) as claimed in claim 1, wherein the chemical is dosed by
a) adjusting the designation on stroke stud (8) for selecting the quantity or volume of the chemical to be dosed through the pump (100);
b) filling the chemical to be dosed in the pump lower part (1) through the inlet (1.1);
c) filling the actuation gas inside pump upper part (2) through the peripheral opening (3.1) of said flange (3) thereby releasing the chemical to be dosed through the outlet (1.2) of said pump lower part (1).

Dated this 29th day of December, 2023
Signature: To be digitally signed by
Adv. (Mr.) Parag M. More
Partner, More & Kadam Legal Associates
Agent for applicant
(Regn. No.: IN/PA 1688)
On behalf of applicant