阅读说明：本技术 一种采煤工作面主煤流除尘系统 (Coal face main coal flow dust removal system ) 是由 赵峰 姚阳 王子亚 豆景乐 刘安锋 李越 惠东 李全会 徐忠磊 刘群奇 牛建醌 于 2020-06-09 设计创作，主要内容包括：本发明公开了一种采煤工作面主煤流除尘系统,包括：设于刮板输送机的第一喷雾系统；设于刮板输送机和转载机对接处的第二喷雾系统；设于转载机与破碎机对接处的第三喷雾系统；沿主煤流的运输路径设置且用于检测主煤流的位置的位置传感器；控制器,控制器的输入端与位置传感器电连接,控制器的输出端分别与第一喷雾系统、第二喷雾系统和第三喷雾系统电连接,以使控制器根据位置传感器的检测信号,来控制第一喷雾系统、第二喷雾系统和第三喷雾系统自动启停。该采煤工作面主煤流除尘系统与液压支架喷雾系统和采煤机喷雾系统一起形成沿采煤工作面主煤流设置的综合除尘系统,能够降低工作面主煤流的粉尘含量,以有效控制除尘效果。(The invention discloses a main coal flow dust removal system of a coal face, which comprises: the first spraying system is arranged on the scraper conveyor; the second spraying system is arranged at the butt joint of the scraper conveyor and the reversed loader; the third spraying system is arranged at the butt joint of the reversed loader and the crusher; a position sensor disposed along a transport path of the main coal flow and configured to detect a position of the main coal flow; the input end of the controller is electrically connected with the position sensor, and the output end of the controller is electrically connected with the first spraying system, the second spraying system and the third spraying system respectively, so that the controller controls the first spraying system, the second spraying system and the third spraying system to automatically start and stop according to the detection signal of the position sensor. The main coal flow dust removal system of the coal face, the hydraulic support spraying system and the coal mining machine spraying system form a comprehensive dust removal system arranged along the main coal flow of the coal face, so that the dust content of the main coal flow of the coal face can be reduced, and the dust removal effect can be effectively controlled.)

1. A coal face main coal flow dust removal system is characterized by comprising:

the first spraying system (1) is arranged on the scraper conveyor;

the second spraying system (2) is arranged at the butt joint of the scraper conveyor and the reversed loader;

the third spraying system (3) is arranged at the butt joint of the reversed loader and the crusher;

a position sensor disposed along a transport path of the main coal flow and configured to detect a position of the main coal flow;

the input end of the controller (4) is electrically connected with the position sensor, and the output end of the controller (4) is electrically connected with the first spraying system (1), the second spraying system (2) and the third spraying system (3) respectively, so that the controller (4) controls the first spraying system (1), the second spraying system (2) and the third spraying system (3) to be automatically started and stopped according to a detection signal of the position sensor.

2. A coal face mainstream dust removal system as claimed in claim 1, characterized in that the first spraying system (1) comprises several groups of first spraying devices (11) for arrangement along the middle chute of the scraper conveyor.

3. A coal face mainstream dust removal system as claimed in claim 2, wherein a set of said first spraying devices (11) is provided every predetermined number of sections of said middle chutes.

4. A coal face mainstream dust removal system as claimed in claim 2, wherein each group of the first spray devices (11) comprises:

the device comprises an injection pipeline (111), wherein the injection pipeline (111) is sequentially provided with a ball valve (112), a filter (113) and a one-way water spray valve (114) along the medium flow direction, and the tail end of the injection pipeline (111) is provided with a nozzle;

and the conducting pipeline (115) is used for conducting the one-way water spraying valve (114), the conducting pipeline (115) is provided with an electromagnetic valve (116) for controlling the on-off of the conducting pipeline, and the electromagnetic valve (116) is electrically connected with the controller (4).

5. The coal face mainstream dust removal system of claim 4 wherein the nozzle comprises:

a first nozzle (117) for pre-wetting and dedusting the bottom layer dust of the main coal flow, the first nozzle (117) forming a conical spray;

a second nozzle (118) for pre-wet dedusting of the top dust of the main coal flow, the second nozzle (118) forming a fan-shaped spray.

6. A coal face main coal flow dust removal system according to claim 4, characterized in that the structure of the second spraying system (2) is the same as that of the first spraying device (11), and the second spraying system (2) comprises two sets of nozzles, which correspond to the outlet of the scraper conveyor and the inlet of the reversed loader respectively.

7. A coal face main coal flow dust removal system according to claim 4, characterized in that the third spraying system (3) comprises two sets of second spraying devices (31), two sets of second spraying devices (31) are respectively arranged at the outlet of the reversed loader and the inlet of the crusher, and the structure of the second spraying devices (31) is the same as that of the first spraying devices (11).

8. The main coal flow dedusting system for the coal face according to any one of claims 1 to 7, characterized by further comprising a water tank (5), wherein a spray pump is arranged in the water tank (5), and the first spray system (1), the second spray system (2) and the third spray system (3) are respectively connected with an outlet of the spray pump through a water supply pipeline (6).

9. The main coal flow dedusting system for the coal face according to any one of claims 1-7, characterized in that the input end of the controller (4) is respectively connected with the reversed loader and the crusher, so as to control the start and stop of the second spraying system (2) according to the start and stop of the reversed loader and control the start and stop of the third spraying system (3) according to the start and stop of the crusher.

10. The coal face mainstream dust removal system of any one of claims 1-7, wherein the position sensor comprises a bracket sensor arranged on a hydraulic bracket for sensing the position of the coal mining machine, so that the controller (4) controls the first spraying system (1) to be linked with the hydraulic bracket spraying system of the coal face mainstream dust removal system according to the detection signal of the bracket sensor.

Technical Field

The invention relates to the technical field of coal mine dust removal systems, in particular to a main coal flow dust removal system for a coal face.

Background

Coal dust is easy to fly in the processes of coal cutting of a coal cutter, hydraulic support supporting and the like, and the coal dust is a main dust source of a fully mechanized coal mining face of a coal mine. With the longer and longer transportation distance, the coal conveying amount of the main coal flow is larger and larger, so that the dust content is larger and larger, and therefore, how to reduce the dust content of the main coal flow of the coal face is of great importance.

However, in the prior art, a hydraulic support spraying dust settling system and a coal mining machine spraying system are mainly used for removing dust from coal dust generated in a coal mining process, and dust still remains or is generated in a main coal flow of a working face in subsequent transportation, transfer and crushing processes, so that the dust content of the main coal flow of the working face is too high.

In summary, how to provide a coal face main coal flow dust removal system capable of reducing the dust content of the working face main coal flow is a problem to be solved urgently by technical personnel in the field.

Disclosure of Invention

In view of the above, the present invention provides a dust removal system for a main coal flow of a coal mining face, which can reduce the dust content of the main coal flow of the coal mining face to effectively control the dust removal effect.

In order to achieve the above purpose, the invention provides the following technical scheme:

a coal face main coal flow dust removal system comprises:

the first spraying system is arranged on the scraper conveyor;

the second spraying system is arranged at the butt joint of the scraper conveyor and the reversed loader;

the third spraying system is arranged at the butt joint of the reversed loader and the crusher;

a position sensor disposed along a transport path of the main coal flow and configured to detect a position of the main coal flow;

the input end of the controller is electrically connected with the position sensor, and the output end of the controller is electrically connected with the first spraying system, the second spraying system and the third spraying system respectively, so that the controller controls the first spraying system, the second spraying system and the third spraying system to automatically start and stop according to a detection signal of the position sensor.

Preferably, the first spraying system comprises several groups of first spraying devices arranged along a central chute of the scraper conveyor.

Preferably, a group of the first spraying devices is arranged at intervals of a preset number of sections of the middle chutes.

Preferably, each set of the first spraying means comprises:

the device comprises an injection pipeline, a filter and a one-way water spray valve, wherein the injection pipeline is sequentially provided with a ball valve, the filter and the one-way water spray valve along the medium flow direction, and the tail end of the injection pipeline is provided with a nozzle;

and the conduction pipeline is used for conducting the one-way water spray valve, is provided with an electromagnetic valve for controlling the on-off of the conduction pipeline, and is electrically connected with the controller.

Preferably, the nozzle comprises:

the first nozzle is used for pre-wetting and dedusting bottom layer dust of the main coal flow and forms a conical spray;

and the second nozzle is used for pre-wetting and dedusting the upper dust of the main coal flow and forms fan-shaped spray.

Preferably, the second spraying system has the same structure as the first spraying device, and the second spraying system comprises two groups of nozzles, and the two groups of nozzles respectively correspond to the outlet of the scraper conveyor and the inlet of the reversed loader.

Preferably, the third spraying system comprises two groups of second spraying devices, the two groups of second spraying devices are respectively arranged at the outlet of the reversed loader and the inlet of the crusher, and the structure of the second spraying devices is the same as that of the first spraying devices.

Preferably, the spraying device further comprises a water tank, wherein a spraying pump is arranged in the water tank, and the first spraying system, the second spraying system and the third spraying system are respectively connected with an outlet of the spraying pump through a water supply pipeline.

Preferably, the input end of the controller is respectively connected with the reversed loader and the crusher, so as to control the start and stop of the second spraying system according to the start and stop of the reversed loader and control the start and stop of the third spraying system according to the start and stop of the crusher.

Preferably, the position sensor comprises a bracket sensor arranged on a hydraulic bracket and used for sensing the position of the coal mining machine, so that the controller controls the first spraying system to be linked with a hydraulic bracket spraying system of the main coal flow dust removal system of the coal face according to a detection signal of the bracket sensor.

The invention provides a main coal flow dust removal system for a coal face, which is characterized in that spraying systems are respectively arranged at the butt joint of a scraper conveyor, the butt joint of the scraper conveyor and a reversed loader and the butt joint of the reversed loader and a crusher to remove dust in the whole transportation process and the transferring process of a main coal flow, and a comprehensive dust removal system arranged along the main coal flow of the coal face is formed together with a hydraulic support spraying system and a coal mining machine spraying system to reduce the dust concentration of the main coal flow of the whole coal face; and the controller automatically controls the automatic start and stop of the first spraying system, the second spraying system and the third spraying system according to the position signal of the main coal flow acquired by the position sensor, so as to achieve the purpose of automatically reducing dust on the whole working surface.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a first spraying system in a main coal flow dedusting system of a coal face according to an embodiment of the present invention;

FIG. 2 is a top view of the nozzle of FIG. 1;

FIG. 3 is a schematic structural diagram of a second spraying system and a third spraying system in a main coal flow dedusting system of a coal face according to an embodiment of the invention;

fig. 4 is a schematic structural diagram of a water supply system in a coal face main coal flow dust removal system according to an embodiment of the present invention.

The reference numerals in fig. 1 to 4 are as follows:

1 is a first spraying system, 11 is a first spraying device, 111 is an injection pipeline, 112 is a ball valve, 113 is a filter, 114 is a one-way water spraying valve, 115 is a conducting pipeline, 116 is an electromagnetic valve, 117 is a first nozzle, 118 is a second nozzle, 2 is a second spraying system, 3 is a third spraying system, 31 is a second spraying device, 4 is a controller, 5 is a water tank, and 6 is a water supply pipeline.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The core of the invention is to provide a dust removal system for the main coal flow of the coal mining working face, which can reduce the dust content of the main coal flow of the working face so as to effectively control the dust removal effect.

Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of a first spraying system in a main coal flow dust removal system of a coal face according to an embodiment of the present invention; FIG. 2 is a top view of the nozzle of FIG. 1; FIG. 3 is a schematic structural diagram of a second spraying system and a third spraying system in a main coal flow dedusting system of a coal face according to an embodiment of the invention; fig. 4 is a schematic structural diagram of a water supply system in a coal face main coal flow dust removal system according to an embodiment of the present invention.

The invention provides a main coal flow dust removal system for a coal mining working face, which comprises a first spraying system 1, a second spraying system 2, a third spraying system 3, a position sensor, a controller 4 and the like.

It should be noted that the main coal flow dust removal system of the coal face further includes a hydraulic support spraying system and a coal mining machine spraying system, and reference is made to the conventional hydraulic support spraying system and the conventional coal mining machine spraying system in the prior art for the respective structures, arrangement modes, action principles, and the like of the hydraulic support spraying system and the coal mining machine spraying system, which are not described herein again.

Specifically, the first spraying system 1 is arranged on the scraper conveyor and used for dedusting a main coal flow in the conveying process of the scraper conveyor.

The second spraying system 2 is arranged at the butt joint of the scraper conveyor and the reversed loader and is used for dedusting the main coal flow transferred from the scraper conveyor to the reversed loader.

The third spraying system 3 is arranged at the butt joint of the reversed loader and the crusher and is used for dedusting the main coal flow sent into the crusher from the reversed loader.

It can be understood that after the coal cutter cuts coal, the scraper conveyor is used to convey the main coal flow to the reversed loader, the reversed loader conveys the main coal flow into the crusher to crush large coal blocks, and finally the crusher outputs the main coal flow.

That is, the spraying systems are respectively arranged at the butt joint of the scraper conveyor, the scraper conveyor and the reversed loader and the butt joint of the reversed loader and the crusher to remove dust in the whole transportation process and the whole transfer process of the main coal flow, and the spraying systems of the hydraulic support and the coal mining machine form a comprehensive dust removal system arranged along the main coal flow of the coal mining working face together to reduce the dust concentration of the main coal flow of the whole working face.

More importantly, a position sensor is arranged along the transportation path of the main coal flow and used for detecting the position of the main coal flow, and the position sensor is electrically connected with the input end of the controller 4 so as to transmit a position signal of the main coal flow detected by the position sensor to the controller 4.

The output end of the controller 4 is respectively electrically connected with the first spraying system 1, the second spraying system 2 and the third spraying system 3, so that the automatic start and stop of the first spraying system 1, the second spraying system 2 and the third spraying system 3 are automatically controlled according to the detection signal of the position sensor, and the purpose of automatically reducing dust on the whole working surface is achieved.

It should be noted that, the number of the position sensors is not limited in the present invention, and those skilled in the art can set the position sensors according to actual needs.

In addition, the invention does not specifically limit the specific model, structure, working principle and the like of the position sensor, as long as the position information of the main coal flow can be acquired.

Further, the present invention is not limited to a specific control method in which the controller 4 controls the first spraying system 1, the second spraying system 2, and the third spraying system 3 to automatically spray, and for example, the controller 4 may control the first spraying system 1, the second spraying system 2, and the third spraying system 3 to perform a spraying operation or stop spraying by controlling automatic opening or closing of the on-off valve.

The controller 4 in the invention can be an independent controller, and can also be a unified controller with a hydraulic support spraying system. It can be understood that, due to the long conveying route of the scraper conveyor, in order to better remove dust from the main coal flow of the working face during the conveying process, on the basis of the above embodiment, the first spraying system 1 comprises a plurality of groups of first spraying devices 11, and the first spraying devices 11 are arranged along the middle chute of the scraper conveyor.

That is to say, this embodiment sprays the whole conveying process of scraper conveyor and falls the dust through setting up multiunit first atomizer 11 to make the main coal stream of working face more thorough fall the dust in the conveying process.

It is understood that position sensors for detecting the position of the main coal flow on the scraper conveyor are arranged in one-to-one correspondence with the first spraying devices 11, and when a certain position sensor detects the position of the main coal flow, the controller 4 controls the first spraying device 11 corresponding to the position sensor to be opened to perform spraying dust settling at a required position.

Further, as a preferable scheme, on the basis of the above embodiment, a group of the first spraying devices 11 is provided every preset number of sections of the middle chutes, for example, every four sections of the middle chutes, that is, a group of the first spraying devices 11 may include five groups of nozzle assemblies, so that each group of the first spraying devices 11 can perform dust removal on the working surface of the scraper conveyor corresponding to the five sections of the middle chutes.

The specific configuration of the first spraying device 11 is not limited in the present invention, as long as spraying can be achieved.

As shown in fig. 1, on the basis of the above embodiment, each group of first spraying devices 11 includes an injection pipeline 111 and a conducting pipeline 115, and a nozzle is arranged at the end of the injection pipeline 111 for performing spray dust settling on the main coal flow of the working face; the injection pipe 111 is provided with a ball valve 112, a filter 113 and a one-way water injection valve 114 in order along the flow direction of the medium flowing therein.

The output end of the conducting pipeline 115 is communicated with the one-way water spray valve 114 and is used for controlling the conduction of the one-way water spray valve 114, the conducting pipeline 115 is provided with an electromagnetic valve 116 and is used for controlling the on-off of the conducting pipeline 115, the electromagnetic valve 116 is electrically connected with the controller 4 so as to control the on-off of the electromagnetic valve 116 through the controller 4 to control the on-off of the conducting pipeline 115, so that the one-way water spray valve 114 is conducted or closed, when the one-way water spray valve 114 is conducted, water can be supplied to the injection pipeline 111 through the water supply pipeline 6 so as to realize the automatic spraying of the injection pipeline; when the one-way water jet valve 114 is closed, the first atomizer 11 is not operated.

In order to achieve better dust settling effect, on the basis of the embodiment, the nozzles comprise the first nozzle 117 and the second nozzle 118, and the first nozzle 117 forms a conical spray to pre-wet and settle bottom layer dust of the main coal flow; the second nozzle 118 forms a fan spray to pre-wet the dust from the top of the main coal stream.

That is, the present embodiment adopts the mode of matching the bottom conical spray and the upper fan-shaped spray, so that the dust removal effect is optimal.

As shown in fig. 2, the axis of the first nozzle 117 is preferably disposed at an angle of 45 ° to the axis of the second nozzle 118.

Preferably, the first spraying device 11 further comprises a mounting plate for fixing the nozzle, the mounting plate is provided with a fixing hole, and the mounting plate is mounted at a position of a baffle reserved hole of the scraper conveyor through a mounting bolt matched with the fixing hole.

Considering the anti-corrosion requirement of the working surface, the mounting plate is an anti-corrosion stainless steel mounting plate; the mounting bolt is an anti-corrosion stainless steel mounting bolt.

In addition, the specific configuration of the second spraying system 2 is not limited in the present invention, but as a preferable mode, in addition to the above-described embodiment, the configuration of the second spraying system 2 is the same as that of the first spraying device 11, and the second spraying system 2 includes two sets of nozzles, and the two sets of nozzles correspond to the outlet of the flight conveyor and the inlet of the reversed loader, respectively.

That is, the outlet of the scraper conveyor and the inlet of the reversed loader in this embodiment share the same spraying system, and the same spraying system sprays and reduces dust on the outlet of the scraper conveyor and the inlet of the reversed loader through two sets of nozzles, respectively, so as to ensure that the main coal flow on the working face is sprayed and removed in the process of transferring from the scraper conveyor to the reversed loader.

Further, the specific structure of the third spraying system 3 is not limited in the present invention, and as a preferable configuration, in addition to the above-described embodiment, the third spraying system 3 includes two sets of second spraying devices 31, the two sets of second spraying devices 31 are respectively provided at the outlet of the reversed loader and the inlet of the crusher, and the structure of the second spraying device 31 is the same as that of the first spraying device 11.

That is, in the present embodiment, the second spraying devices 31 are respectively arranged at the outlet of the reversed loader and the inlet of the crusher, so that the main coal flow on the working face is sprayed and dedusted when the main coal flow is transferred between the reversed loader and the crusher.

In view of the convenience of supplying water to the first spraying system 1, the second spraying system 2 and the third spraying system 3, on the basis of the above embodiment, the spraying system further comprises a water tank 5, a spraying pump is arranged in the water tank 5, and the first spraying system 1, the second spraying system 2 and the third spraying system 3 are respectively connected with the outlets of the spraying pumps through water supply pipelines 6.

That is, the present embodiment supplies water to the first, second, and third spraying systems 1, 2, and 3 through the same water supply system.

Of course, the water supply system can also supply water for the conventional hydraulic support spraying dust settling system of the main coal flow dust removal system of the coal face and the conventional coal mining machine spraying system.

It should be noted that, in consideration of linkage of the equipment, on the basis of the above embodiment, the input end of the controller 4 is respectively connected with the reversed loader and the crusher, so as to control the start and stop of the second spraying system 2 according to the start and stop of the reversed loader, and control the start and stop of the third spraying system 3 according to the start and stop of the crusher.

That is, in the present embodiment, when the reversed loader is turned on, the controller 4 is made to turn on the second spraying system 2 according to the turning-on signal of the reversed loader, so as to turn on the second spraying system 2 for spraying and dedusting at the moment when the reversed loader starts to work; when the crusher is started, the controller 4 is enabled to open the third spraying system 3 according to the starting signal of the crusher, so that the third spraying system 3 is opened for spraying and dedusting at the moment when the crusher starts to work; thereby making the control of the second 2 and third 3 spraying systems more flexible.

Similarly, when the reversed loader or the crusher stops, the controller 4 controls the second spraying system 2 or the third spraying system 3 to stop working according to the stop signal of the reversed loader or the crusher.

In addition, in consideration of the linkage of the first spraying system 1 and the hydraulic support spraying system of the coal face main coal flow dust removal system, on the basis of the above embodiment, the position sensor includes a support sensor arranged on the hydraulic support and used for sensing the position of the coal mining machine, so that the controller 4 controls the first spraying system 1 and the hydraulic support spraying system of the coal face main coal flow dust removal system to be linked according to the detection signal of the support sensor.

That is to say, when the support sensor on the hydraulic support senses the position of the coal mining machine, the hydraulic support spraying system is opened, and meanwhile, the controller 4 controls the first spraying system 1 to be opened, so that the first spraying system 1 and the hydraulic support spraying system are linked, and the compatibility of the main coal flow dust removal system of the whole coal mining working face is improved.

It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The main coal flow dust removal system of the coal face provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.