Dust fall spraying device for conveying belt of coal cleaning plant

Abstract

The utility model provides a dust fall spraying device for a conveying belt of a coal cleaning plant, and belongs to the technical field of dust fall of coal cleaning plants. The whole device is convenient to distribute and install, the dust falling effect is good, and the anti-blocking effect of the spraying head is good. A plurality of spray head frames of the device are arranged above a belt in a crossing mode, the lower end of each spray head frame is fixedly connected to side plates on the two sides of the belt, flow dividing pipes are evenly distributed on each spray head frame, the water inlet ends of a plurality of spray assemblies are connected and installed on the flow dividing pipes, and the water outlet ends of the spray assemblies penetrate through the spray head frames to point to the bearing face of the belt. The water inlet ends of the multiple flow dividing pipes communicate with the high-pressure pipe, the high-pressure pipe supplies high-pressure water flow to the multiple flow dividing pipes, and the high-pressure water flow is evenly dispersed to the multiple spraying assemblies through the flow dividing pipes to be sprayed out to complete dust falling. The device is good in dust falling coverage, good in dust falling effect and high in dust falling efficiency; the rubber sealing pad prevents dust and impurities from entering the spraying assembly, blockage is avoided, and the service life is long; the spraying assembly is screwed through threads, and installation and maintenance are convenient.

Description

TECHNICAL FIELD

[0001] The utility model belongs to coal washery dust falling technical field, especially, relate to a kind of coal washery conveying belt dust falling spray device. BACKGROUND

[0002] Coal washing is an important part of coal production, most coal enterprises have their own supporting coal washery to improve coal quality. In the coal washing process of coal washery, coal needs to go through crushing and other processes to facilitate washing, which produces a large amount of dust at this time, which seriously affects the working environment and can harm the health of workers.

[0003] Coal washery generally uses high-pressure spray for dust falling, which combines liquid droplets with dust and settles under the action of gravity. However, the existing dust removal device installed on the conveying belt of coal washery has low dust removal efficiency, high water consumption, and is prone to blockage. In the long-term production process of coal washery, it is easy to cause the situation that the spray head cannot spray liquid, which seriously affects the normal operation of coal washery. The consumption of water resources is large, the dust removal effect cannot meet the expected, and it does not meet the concept of building green mine.

[0004] Therefore, it is necessary to propose a coal washery conveying belt dust falling spray device to improve the dust falling efficiency and equipment reliability of coal washery belt, improve the working environment of coal washery, and ensure the occupational health and safety of workers. INVENTION CONTENTS

[0005] To solve the problems in the above background technology, the utility model provides a coal washery conveying belt dust falling spray device, which has convenient overall installation, good dust falling effect and good spray head anti-blocking effect.

[0006] The utility model solves the technical problems by adopting the technical scheme of a coal washery conveying belt dust falling spray device, which includes a spray head frame, a spray assembly, a shunt pipe and a high-pressure pipe. Multiple spray head frames are arranged above the belt, and the lower end of each spray head frame is fixedly connected to the side plates on both sides of the belt. A shunt pipe is arranged on each spray head frame, and the water inlet end of each spray head frame is connected to the shunt pipe. The water outlet end of the spray assembly is directed towards the carrying surface of the belt through the spray head frame, and the water inlet end of each shunt pipe is in communication with the high-pressure pipe.

[0007] Each spray assembly comprises a shell, a spring, a spray head and a pressure plate, the pressure plate is located at the water inlet end of the spray head and is fixedly connected with the spray head coaxially as a whole, a through hole is formed in the middle of the water outlet end face of the lower shell, the insert pipe is coaxially arranged and fixedly connected on the inner wall of the shell, the spring is coaxially arranged in the shell and is sleeved on the outer side of the insert pipe, the spray head is movably inserted in the insert pipe, and the pressure plate is pressed into the gap between the insert pipe and the shell.

[0008] The spray assembly further comprises a rubber gasket, the rubber gasket is fixedly capped on the through hole of the lower end face of the shell, and a plurality of through slits are formed in the rubber gasket.

[0009] A water passing hole is formed in the middle of the pressure plate along the axis, a plurality of water outlet holes are arranged on the lower end side wall of the spray head around the axis, and the water passing hole and the water outlet hole are in communication.

[0010] A limiting table one and a limiting table two are fixedly arranged on the inner wall of the shell, and an internal thread is formed on the inner wall of the water inlet end port of the upper end of the shell.

[0011] A plurality of joints are arranged on the shunt pipe, an external thread is formed on each joint, and the shell is screwed on the joint.

[0012] The beneficial effects of the utility model are as follows: the spray dust-settling device can effectively ensure the cleanliness of the working environment of the coal washing plant, help production personnel maintain good health under the condition of ensuring production safety, the spray head frame of the device is transversely arranged above the belt, can fully cover the belt bearing surface during spray dust-settling, has good dust-settling effect and high dust-settling efficiency, the rubber gasket is arranged at the through hole of the spray assembly of the device, can block dust impurities from entering the spray assembly, can effectively avoid the water outlet hole from being blocked, and can effectively prolong the service life of the spray assembly, the spray assembly of the device is installed in the form of screwing, is convenient for installation, maintenance and operation. BRIEF DESCRIPTION OF DRAWINGS

[0013] In the drawings:

[0014] Figure 1 It is the overall structure schematic view of the utility model;

[0015] Figure 2 It is the installation effect schematic view of the spray assembly of the utility model;

[0016] Figure 3 It is the internal structure schematic view of the spray assembly of the utility model (non-spray state);

[0017] Figure 4 It is the internal structure schematic view of the spray assembly of the utility model (spray state);

[0018] In the figure: 1, spray head frame; 2, side plate; 3, spray assembly; 4, shunt pipe; 5, belt; 6, high-pressure pipe; 30, shell; 31, limit table one; 32, spring; 33, rubber gasket; 34, spray head; 35, pressure plate; 36, inner cavity; 37, limit table two; 38, plug-in pipe; 341, water outlet hole; 351, water passing hole; 41, joint. DETAILED DESCRIPTION

[0019] The utility model will be explained further in detail in combination with the drawings. The drawings are all simplified schematic diagrams, and only schematically show the basic structure of the utility model, so it only shows the structure related to the utility model.

[0020] A kind of coal washery conveying belt dust spray device, including spray head frame 1, spray assembly 3, shunt pipe 4 and high-pressure pipe 6, multiple spray head frames 1 are straddled in belt 5 top, and the lower end of each spray head frame 1 is fixedly connected on the side plate 2 of belt 5 two sides, and shunt pipe 4 is arranged on each spray head frame 1, and the water inlet end of multiple spray assemblies 3 is connected and installed on shunt pipe 4, and the water outlet end of spray assembly 3 passes through spray head frame 1 and points to the load surface of belt 5, and the water inlet end of multiple shunt pipes 4 is communicated with high-pressure pipe 6, and high-pressure pipe 6 supplies high-pressure water flow for multiple shunt pipes 4, and high-pressure water flow is evenly dispersed to multiple spray assemblies 3 by shunt pipe 4, and finally is sprayed on belt 5 from the water outlet end of spray assembly 3 to complete dust reduction.

[0021] Each spray assembly 3 includes shell 30, spring 32, spray head 34 and pressure plate 35, the pressure plate 35 is located at the water inlet end of spray head 34, and the pressure plate 35 is coaxially fixedly connected with spray head 34 to form an integral whole, the shell 30 is located in the middle of the lower water outlet end face and is provided with a through hole, the plug-in pipe 38 is coaxially arranged with the through hole and fixedly connected to the inner wall of the shell 30, the spring 32 is coaxially installed inside the shell 30 and is sleeved on the outside of the plug-in pipe 38, the spray head 34 is movably inserted into the plug-in pipe 38, and the pressure plate 35 is pressed into the gap between the plug-in pipe 38 and the shell 30.

[0022] When high-pressure water flow enters the water inlet end of the upper end of shell 30, the pressure plate 35 is pressed downward by water flow impact, and then pushes the spray head 34 to slide downward along the plug-in pipe 38, and the water outlet end of the spray head 34 penetrates out from the through hole below the shell to spray water mist, at this time, the spring 32 is in a compressed state under the pressure from the pressure plate 35, and when the supply of high-pressure water flow stops, the spring 32 will be elastically deformed to push the pressure plate 35 upward, and then make the spray head 34 retract into the plug-in pipe 38.

[0023] The spray assembly 3 further comprises a rubber gasket 33 fixedly capped on the through hole of the lower end surface of the shell 30, a plurality of through slits are formed on the rubber gasket 33, the plurality of through slits are radially arranged and intersect at the center, the rubber gasket 33 is arranged to ensure that the spray head 34 remains clean, the plurality of through slits are arranged to support the extension and retraction of the spray head 34, the spray head 34 slides downward in the insertion pipe 38 to push the rubber gasket 33 along the plurality of through slits, and the spray head 34 retracts upward, and the rubber gasket 33 restores to the original shape to seal the through hole based on the elastic recovery ability of the material itself.

[0024] A water passing hole 351 is formed in the middle of the pressure bearing plate 35 along the axis, a plurality of water outlet holes 341 are arranged around the axis on the lower end side wall of the spray head 34, the water passing hole 351 and the water outlet hole 341 are in communication, a spray nozzle is arranged in each of the water outlet holes 341 for processing water flow into mist, a sealing gasket is arranged between the pressure bearing plate 35 and the inner wall of the shell 30, the chamber between the pressure bearing plate 35 and the water inlet end of the shell 30 is the inner cavity 36, the outer diameter of the spray head 34 is the same as the inner diameter of the insertion pipe 38, that is, the spray head 34 is inserted into the insertion pipe 38, when the spray assembly 3 works, water flow enters the inner cavity 36 from the upper end of the shell 30, the water fills the inner cavity 36 and enters the water passing hole 351 and the water outlet hole 341, because the spray head 34 is inserted into the insertion pipe 38, the water cannot be smoothly discharged, so the water pressure in the inner cavity 36 gradually increases and pushes the pressure bearing plate 35 downward, thereby pushing the lower end of the spray head 34 out of the insertion pipe 38, and the water can be discharged from the water outlet hole 341.

[0025] A limiting table one 31 and a limiting table two 37 are fixedly arranged on the inner wall of the shell 30, an inner thread is formed on the inner wall of the water inlet end port of the upper end of the shell 30, the limiting table one 31 is used to support the pressure bearing plate 35 to avoid excessive ejection when the spray head 34 retracts and resets, the limiting table two 37 is arranged in connection with the inner thread to avoid excessive installation of the shell 30 on the shunt pipe.

[0026] A plurality of joints 41 are arranged on the shunt pipe 4, an outer thread is formed on each of the joints 41, the shell 30 is screwed on the joint 41, and a sealing washer is arranged between the end surface of the joint 41 and the limiting table two 37 to avoid water leakage.

[0027] Working principle: a plurality of spray head frames 1 are arranged on the belt 5 and fixedly connected to the side plate 2 at the bottom, the shunt pipe 4 is arranged on each of the spray head frames 1, the high-pressure pipe 6 is fixedly arranged on the side plate 2 and connected to the shunt pipe 4 and the high-pressure pipe 6, and a plurality of spray assemblies 3 are screwed on the plurality of joints 41 of the shunt pipe 4.

[0028] When the spraying is needed, the high-pressure pipe 6 supplies the high-pressure water flow to the multiple branch pipes 4, the high-pressure water flow is dispersed to the multiple spraying assemblies 3 through the branch pipes 4, the water body flows into the inner cavity 36 and pushes the pressure bearing plate 35 to slide down, the lower end of the spraying head 34 pushes open the rubber sealing pad 33 to project to the outside of the shell 30, the water outlet hole 341 is exposed to perform the spraying work, the high-pressure water flow is stopped after the spraying is completed, at this time, the water pressure on the upper surface of the pressure bearing plate 35 is reduced, the spring 32 is deformed to push the pressure bearing plate 35 to reset, and then the spraying head 34 is retracted into the plug-in pipe 38, the rubber sealing pad 33 blocks the through hole to avoid the dust from entering the spraying assembly 3 to block the water outlet hole 341. Each branch pipe 4 is provided with an independent water valve, that is, each branch pipe 4 can independently perform the spraying work, and each branch pipe 4 can be independently controlled, so that the maintenance work is facilitated, and the overall production is not affected, and each spraying assembly 3 is installed in the form of screwing, which is also convenient for installation and replacement.

[0029] The preferred embodiments of the utility model are described above only, and are not used for limiting the utility model. For the person skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A coal washery conveyor belt dust suppression spray apparatus characterised in that: The utility model provides a kind of belt cleaning device, including spray head frame (1), spray assembly (3), shunt pipe (4) and high-pressure pipe (6), multiple spray head frames (1) are straddled above belt (5), and the lower end of each spray head frame (1) is fixedly connected on the side plate (2) of the both sides of belt (5), and multiple spray head frames (1) are evenly arranged shunt pipe (4), and the water inlet end of multiple spray assemblies (3) is connected and installed on shunt pipe (4), and the water outlet end of spray assembly (3) passes through spray head frame (1) and points to the load surface of belt (5), and the water inlet end of multiple shunt pipes (4) is communicated with high-pressure pipe (6); Each spray assembly (3) includes a housing (30), a spring (32), a spray head (34), and a pressure plate (35). The pressure plate (35) is located at the water inlet end of the spray head (34) and is fixedly connected coaxially with the spray head (34) to form an integral whole. A through hole is formed in the middle of the water outlet end face of the lower housing (30). A plug-in tube (38) is coaxially arranged with the through hole and fixedly connected to the inner wall of the housing (30). The spring (32) is coaxially installed inside the housing (30) and is sleeved outside the plug-in tube (38). The spray head (34) is movably inserted into the plug-in tube (38), and the pressure plate (35) is pressed into the gap between the plug-in tube (38) and the housing (30).

2. A coal washery transfer belt dust suppression spray apparatus according to claim 1, characterised in that: The spray assembly (3) further includes a rubber gasket (33) fixedly capped on the through hole of the lower end face of the housing (30). A plurality of through slits are formed on the rubber gasket (33).

3. A coal washery transfer belt dust suppression spray apparatus according to claim 2, characterised in that: A water passing hole (351) is formed in the middle of the pressure plate (35) along the axis. A plurality of water outlet holes (341) are arranged around the axis on the lower end side wall of the spray head (34). The water passing hole (351) and the water outlet hole (341) are in communication.

4. A coal washery transfer belt dust suppression spray apparatus according to claim 3, characterised in that: A limiting table one (31) and a limiting table two (37) are fixedly arranged on the inner wall of the housing (30). An internal thread is formed on the inner wall of the water inlet end port of the upper end of the housing (30).

5. A coal washery transfer belt dust suppression spray apparatus according to claim 4, characterised in that: A plurality of joints (41) are arranged on the shunt pipe (4). An external thread is formed on each joint (41). The housing (30) is screwed onto the joint (41).

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