DESC:FORM 2

THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENT RULES, 2003

COMPLETE SPECIFICATION
(See Section 10 and Rule 13)

Title of invention:
MIST SYSTEM FOR SUPPRESSION OF DUST IN THE AIR IN MINES

Applicant:
BEML Limited
A company Incorporated in India under the Companies Act, 1956
Having Address As:
BEML Soudha, 23/1, 4th Main,
Sampangirama Nagar, Bengaluru - 560 027,
Karnataka, India

The following specification particularly describes the invention and the manner in which it is to be performed.
CROSS-REFERENCE TO RELATED APPLICATIONS AND PRIORITY
[001] The present invention claims priority from Indian patent application numbered IN 202241053322 filed on 18th September, 2022.

TECHNICAL FIELD
[002] The present subject matter described herein, in general, relates to a suspended dust suppression system and more specifically relates to a system and method for suppressing dust suspended in the air in mines.
BACKGROUND
[003] In mines, dust in the air is common which is emitted from open-pit mines, ore processing and metal extraction plants, ore stockpiles, ore transport by heavy earth moving machinery (HEMM) and mine waste deposits. Further, suspended dust in the air reduces visibility for operators of heavy earth moving machinery (HEMM). The dust contains very minute to fine particles which are hazardous and can cause lung disease and other respiratory problems, like asthma, when they are inhaled.Also, the dust gets accumulated on surfaces and inside various machineries in the mines which reduces life of said machineries.
[004] Conventionally, a spray system of stationary type is used in the mines for suppression of the dust. Such spray systems have limitations like limited reach of spray, length of water carrying pipes etc. Also, they require larger space and are not movable hence limited area of mine is covered.
[005] Hence, there is a need to develop a system that is movable to cover entire mining area for suppression of dust.
OBJECT OF THE INVENTION
[006] It is a main object of the present invention to provide a mist system for suppression of suspended dust in the air.
[007] It is another object of the present invention to provide a movable dust suppression system.
[008] It is another object of the present invention to provide a mist system that cover an entire area of mine.
STATEMENT OF THE INVENTION
[009] Accordingly, the present invention relates to a mist system for suppression of dust in the air in mines comprises of a movable water tanker (100), a centrifugal pump (102) configured to suck water from a tank of said movable water tanker (100), a pipe header (108) configured to be mounted above the tank of the movable water tanker (100) on at least one side of the movable water tanker (100), a pneumatic valve (104) configured to supply water to the pipe header (108) upon actuation, a water filter (106) configured to filter water of the movable water tanker (100) before supplying to the pipe header (108) and a series of nozzles (110) configured to be mounted in the pipe header (108) for spraying the water in the form of mist in the mine for suppression of dust. Furthermore, the pipe header (108) along with the series of nozzles (110) are configured to be provided surrounding three sides of the movable water tanker (100). The movable water tanker (100) is configured to cover an entire area of the mine for suppression of dust. The dust present in the air of the mine is configured to be mixed with the mist or water droplets and settle down on ground of the mine due to gravity and weight of the water droplets. The mist system is configured with a pneumatic control switch mounted in a cabin of the movable water tanker (100). The pneumatic valve (104) is configured to be actuated by said pneumatic control switch.
SUMMARY OF THE INVENTION
[0010] Before the present system and method are described, it is to be understood that this application is not limited to the particular machine or apparatus, and methodologies described, as there can be multiple possible embodiments that are not expressly illustrated in the present disclosures. It is also to be understood that the terminology used in the description is for the purpose of describing the particular versions or embodiments only, and is not intended to limit the scope of the present application. This summary is provided to introduce aspects related to a mist system for suppression of suspended dust in the air. This summary is not intended to identify essential features of the proposed subject matter nor it is intended for use in determining or limiting the scope of the proposed subject matter.
[0011] The present invention discloses a mist system for suppression of suspended dust in the air.The system comprises a movable water tanker, a centrifugal pump mounted on the water tanker, a water filter for filtering water of the water tanker and a pipe header provided with series of nozzles for spraying fine droplets of water into atmospheric air.The system further comprises a pneumatic switch in a cabin area of water tanker for activation of mist system and a pneumatic valve for supplying water to various components of the system. Said centrifugal pump supplies water from the water tanker to the pipe header wherein the said nozzles of the pipe header sprays fine droplets of water in a form of mist into an atmosphere of the mine to be mixed with the suspended dust particles of the atmosphere. The dust particles get attracted to the mist and settles down on a ground due to weight of the water droplets. Hence, an air pollution in the mines is reduced which ultimately improves health of workers working in the mines. It also improves the visibility in the mines thereby avoiding risk of accidents in the mining area.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The foregoing summary, as well as the following detailed description of embodiments, is better understood when read in conjunction with the appended drawing. For the purpose of illustrating the disclosure, example constructions of the disclosure are shown in the present document, however, the disclosure is not limited to the specific methods and apparatus disclosed in the document and the drawing.
[0013] The detailed description is described with reference to the accompanying figure. The suitable reference numbers are given in the figures and the same numbers are used throughout the drawing to refer like features and components.
[0014] Figure 1 illustrates a top view of a mist system for suppression of dust, in accordance with the present invention.
[0015] Figure 2 illustrates a side view of the mist system for suppression of dust, in accordance with the present invention.
[0016] The figure depicts various embodiments of the present disclosure for purposes of illustration only. One skilled in the art will readily recognise from the following discussion that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.
DETAILED DESCRIPTION
[0017] Some embodiments of this disclosure, illustrating all its features, will now be discussed in detail. The words "comprising", “having”, and "including," and other forms thereof, are intended to be equivalent in meaning and be open ended in that an item or items following any one of these words is not meant to be an exhaustive listing of such item or items, or meant to be limited to only the listed item or items. Although any system and method similar or equivalent to those described herein can be used in the practice or testing of embodiments of the present disclosure, the exemplary, systems and methods are now described. The disclosed embodiments are merely exemplary of the disclosure, which may be embodied in various forms.
[0018] Various modifications to the embodiment will be readily apparent to those skilled in the art and the generic principles herein may be applied to other embodiments. However, one of ordinary skill in the art will readily recognize that the present disclosure is not intended to be limited to the embodiments illustrated,but is to be accorded the widest scope consistent with the principles and features described herein.
[0019] The present invention proposes a system for suppression of dust in the air in mines. The system mainly comprises a mist spray from nozzles provided on a pipe header wherein the pipe header is connected to a centrifugal pump for supplying water from a water tanker. The water tanker is a movable equipment wherein the whole mist system is mounted on said water tanker. The water tanker is configured to cover an entire area of the mines while spraying the mist so that the suspended dust of the whole mine is suppressed effectively.
[0020] Referring to figure 1 and figure 2, a mist system is illustrated for suspended dust suppression. The system comprises a movable water tanker (100), a centrifugal pump (102), a pneumatic valve (104), a water filter (106), a pipe header (108), a series of nozzles (110) and a pneumatic control switch (not shown in figure). The pneumatic control switch is mounted in a cabin of the movable water tanker (100) wherein the actuation of said pneumatic control switch operates the pneumatic valve for supplying water. Further, the centrifugal pump (102) is configured to suck water from a tank of the movable water tanker (100) and supplies the water further to the pipe header (108) through the water filter (106) wherein said water filter (106) filters the water before going to the pipe header (108). In the present embodiment, the pipe header (108) is provided above the tank of the movable water tanker (100) on at least one side of the movable water tanker (100). The pipe header (108) is provided with the series of nozzles (110) for spraying the water in the pipe header (108) in the form of mist. In a particular embodiment, the pipe header (108) along with the series of nozzles (110) is provided surrounding three sides of the movable water tanker (100). The movable water tanker (100) is configured to cover an entire area of the mine by driving it to required area where the dust needs to be suppressed. The dust present in the air of the mine is mixed with the mist or water droplets on operating the system and due to gravity and weight of the water droplets, the dust gets settled down on ground of the mine and the dust gets suppressed.
[0021] Further, the present invention particularly relates to a mist system for suppression of dust in the air in mines comprises of a movable water tanker (100), a centrifugal pump (102) configured to suck water from a tank of said movable water tanker (100), a pipe header (108) configured to be mounted above the tank of the movable water tanker (100) on at least one side of the movable water tanker (100), a pneumatic valve (104) configured to supply water to the pipe header (108) upon actuation, a water filter (106) configured to filter water of the movable water tanker (100) before supplying to the pipe header (108) and a series of nozzles (110) configured to be mounted in the pipe header (108) for spraying the water in the form of mist in the mine for suppression of dust. Furthermore, the pipe header (108) along with the series of nozzles (110) are configured to be provided surrounding three sides of the movable water tanker (100). The movable water tanker (100) is configured to cover an entire area of the mine for suppression of dust. The dust present in the air of the mine is configured to be mixed with the mist or water droplets and settle down on ground of the mine due to gravity and weight of the water droplets.The mist system is configured with a pneumatic control switch mounted in a cabin of the movable water tanker (100). The pneumatic valve (104) is configured to be actuated by said pneumatic control switch.
[0022] Exemplary embodiments discussed above may provide certain advantages. Though not required to practice aspects of the disclosure, these advantages may include those provided by the following features.
• Some embodiments of the system for suppression of dust in the air of mine ensures health safety of workers of the mine by suppressing the dust of the mines.
• Some embodiments of the system for suppression of dust in the air of mine safeguards engines of heavy earth moving machinery (HEMM) from dust ingress.
• Some embodiments of the system for suppression of dust in the air of mine reduces air pollution in the entire mining area.
• Some embodiments of the system for suppression of dust in the air of mine enhances life of machineries of the mines.
[0023] Following is the list of reference numerals referred in the present invention.

Reference Numerals Element Description
100 Movable water tanker
102 Centrifugal pump
104 Pneumatic valve
106 Water filter
108 Pipe header
110 Series of nozzles

,CLAIMS:
1. A mist system for suppression of dust in the air in mines comprises:
a movable water tanker (100);
a centrifugal pump (102) configured to suck water from a tank of said movable water tanker (100);
a pipe header (108) configured to be mounted above the tank of the movable water tanker (100) on at least one side of the movable water tanker (100);
a pneumatic valve (104) configured to supply water to the pipe header (108) upon actuation;
a water filter (106) configured to filter water of the movable water tanker (100) before supplying to the pipe header (108); and
a series of nozzles (110) configured to be mounted in the pipe header (108) for spraying the water in the form of mist in the mine for suppression of dust.
2. The mist system for suppression of dust in the air in mines, wherein the pipe header (108) along with the series of nozzles (110) are configured to be provided surrounding three sides of the movable water tanker (100).
3. The mist system for suppression of dust in the air in mines, wherein the movable water tanker (100)is configured to cover an entire area of the mine for suppression of dust.
4. The mist system for suppression of dust in the air in mines, wherein the dust present in the air of the mine is configured to be mixed with the mist or water droplets and settle down on ground of the mine due to gravity and weight of the water droplets.
5. The mist system for suppression of dust in the air in mines, wherein said mist system is configured with a pneumatic control switch mounted in a cabin of the movable water tanker (100).
6. The mist system for suppression of dust in the air in mines, wherein the pneumatic valve (104)is configured to be actuated by said pneumatic control switch.