Dust suppression device of totally-closed guide chute

Abstract

The dust suppression device comprises a conveying belt and a material guide groove body located above the conveying belt, sealing pieces are arranged between the bottoms of the left side and the right side of the material guide groove body and the upper end face of the conveying belt, and the top of the material guide groove body is sleeved with a rectangular frame type water supply pipe. The bottom of the water supply pipe is fixedly provided with a short connecting pipe located on the periphery of the material guide groove body, the bottom of the short connecting pipe is connected with a spray head, the water supply pipe and the material guide groove body are in front-back sliding fit, the top of the material guide groove body is provided with a control mechanism used for controlling the water supply pipe to move front and back, and the short connecting pipe is provided with a water inlet pipe. According to the utility model, the rectangular frame type water supply pipe is sleeved outside the material guide groove body, and the short connecting pipe and the spray head which are distributed along the periphery of the material guide groove body are arranged at the bottom of the water supply pipe, so that the spray head can carry out dust falling treatment on coal dust moved out between the material guide groove body and the conveying belt when spraying, and the dust falling treatment effect is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal processing, specifically to a dust suppression device for a fully enclosed material guiding trough. Background Technique

[0002] Due to reasons such as the air volume of the coal crusher, the induced air volume of the coal flow in the coal dropping pipe, and the poor tightness of the positive pressure area, a large amount of pulverized coal overflows at the outlet of the material guiding trough and around the coal crusher body, which is the main dust source of dust pollution. Generally, the dust concentration at the outlet of the material guiding trough from the coal crusher room to the lower belt is as high as over 50 mg / m³, far exceeding the national standard. For this reason, seals are usually filled between the conveyor belt and the material guiding trough to reduce the flow rate of dust overflow, but this seal cannot completely seal, so there is still a problem of dust raising at the joint between the material guiding trough and the conveyor belt.

[0003] The utility model with the publication number CN219546193U proposes a dust suppression device applicable to the material guiding trough of the coal conveying system in a thermal power plant. Its composition includes: a coal dropping pipe and a belt conveyor. Sprayers are respectively installed at the position from the material dropping pipe protection cover of the coal dropping pipe to the outlet of the material guiding trough and at the front and rear ends of the coal dropping pipe in the material guiding trough. The sprayers are connected to the main PPR pipe through a group of branch pipelines, and the main PPR pipe is connected to the main pipe; a filter, a first isolation valve, and a second isolation valve are respectively installed on the main PPR pipe, and the sprayers adopt supercharger fan-shaped sprayers with a large diffusion angle and a small aperture.

[0004] However, the above-mentioned existing technology still has the following deficiencies when in use: Sprayers are installed in the heavy dust-raising areas where coal is overly crushed at both ends of the material guiding trough, and the heavy dust-raising areas are sprayed by the sprayers for dust suppression. Although seals are provided between the bottom of both sides of the material guiding trough and the conveyor belt, due to the relative movement between the material guiding trough and the conveyor belt, some pulverized coal still overflows from the contact between both sides of the material guiding trough and the conveyor belt.

[0005] Therefore, the utility model provides a dust suppression device for a fully enclosed material guiding trough. Content of the Utility Model

[0006] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a dust suppression device for a fully enclosed material guiding trough to solve the problems proposed in the above background technology. The utility model has the advantages of comprehensively spraying and suppressing dust around the material guiding trough body, better environmental protection effect, and the water supply pipe is arranged to move back and forth, increasing the spray coverage area of the sprayer, better dust suppression effect, and reducing cost investment and saving water resources.

[0007] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a dust suppression device for a fully enclosed material guide trough, including a conveyor belt and a material guide trough body located above the conveyor belt, seals are arranged between the bottom of the left and right sides of the material guide trough body and the upper end surface of the conveyor belt, a rectangular frame-type water supply pipe is sleeved on the top of the material guide trough body, a short connecting pipe located on the outer periphery of the material guide trough body is fixedly arranged at the bottom of the water supply pipe, a nozzle is connected to the bottom of the short connecting pipe, the water supply pipe and the material guide trough body are slidably matched front and back, a control mechanism for controlling the forward and backward movement of the water supply pipe is arranged on the top of the material guide trough body, and a water inlet pipe is arranged on the short connecting pipe.

[0008] Furthermore, a hanging plate close to the top is welded on the left and right sides of the material guide trough body, and a guide sleeve that is sleeved on the outside of the water supply pipe is welded on the top of the hanging plate through a support plate.

[0009] Furthermore, a supporting groove wheel located on one side of the guide sleeve is arranged on the top of the suspension plate.

[0010] Furthermore, the number of the suspension plates is at least three and they are distributed at equal intervals.

[0011] Furthermore, the control mechanism includes a control motor, a positioning plate and a shift shaft. The two ends of the positioning plate are welded to the tops of the two long tubes on the short connecting tube. The control motor is fixedly provided with the top of the material guide trough body and its output shaft is fixedly connected to the cantilever. The shift shaft and the positioning plate are slidably matched and one end of it is rotatably connected to one end of the cantilever.

[0012] Furthermore, a positioning sleeve is welded on one end of the cantilever and is sleeved on the outside of the shifting shaft. The positioning sleeve is rotatably connected to the positioning sleeve. A guide groove is penetrated through one side of the positioning plate. A slider is fixedly sleeved on the shifting shaft and is slidably connected to the guide groove.

[0013] Furthermore, there are two water inlet pipes, which are respectively located on two short pipes on the water supply pipe.

[0014] The beneficial effects of the utility model are as follows:

[0015] In the utility model, a rectangular frame-type water supply pipe is sleeved on the outside of the material guide trough body. By arranging short pipes and nozzles distributed along the outer periphery of the material guide trough body at the bottom of the water supply pipe, the coal dust can be removed from between the material guide trough body and the conveyor belt when the nozzle sprays, thereby greatly improving the dust reduction effect.

[0016] In the utility model, the water supply pipe and the material guide trough are arranged to slide forward and backward. Since the water mist sprayed by the nozzle is usually fan-shaped, the water supply pipe moves forward and backward, which can increase the coverage of the nozzle spray, while reducing the number of nozzles, reducing cost investment, and improving the utilization rate of water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the dust suppression device for the fully enclosed material guiding trough of the present utility model;

[0018] Figure 2 is Figure 1 Schematic diagram after magnifying the local part "a" in

[0019] Figure 3 is Figure 1 right view of

[0020] In the figure: 1, conveyor belt; 2, material guiding trough body; 21, suspension plate; 211, support plate; 212, guiding sleeve; 213, support grooved wheel; 3, water supply pipe; 31, water inlet pipe; 4, short connecting pipe; 5, nozzle; 6, control mechanism; 61, control motor; 611, cantilever; 6111, positioning sleeve; 62, positioning plate; 621, guiding groove; 63, shifting shaft; 631, sliding block. Specific implementation manners

[0021] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation manners.

[0022] Please refer to Figures 1 to 3 , the present utility model provides a technical solution: a dust suppression device for a fully enclosed material guiding trough, including a conveyor belt 1 and a material guiding trough body 2 located above the conveyor belt 1. A sealing member is provided between the bottom of the left and right sides of the material guiding trough body 2 and the upper end surface of the conveyor belt 1. This sealing member is usually a rubber plate, and the rubber plate can reduce the gap between the material guiding trough body 2 and the conveyor belt 1. Although the sealing member plays a role in sealing, it is easy for some pulverized coal to overflow.

[0023] For this reason, in this technical solution, a rectangular frame type water supply pipe 3 is sleeved on the top of the material guiding trough body 2. A short connecting pipe 4 located on the outer periphery of the material guiding trough body 2 is fixedly provided at the bottom of the water supply pipe 3. A nozzle 5 is connected to the bottom of the short connecting pipe 4. The water supply pipe 3 and the material guiding trough body 2 are in sliding fit in the front and rear directions. When the water supply pipe 3 moves back and forth, it will drive all the nozzles 5 to move back and forth. The purpose is to increase the spray coverage range of the nozzles 5 and avoid the occurrence of spray dust suppression blind areas. Moreover, the movable setting of the nozzles 5 can reduce the number of nozzles 5 invested. If the water supply pipe 3 is in a fixed state, a large number of short connecting pipes 4 and corresponding nozzles 5 need to be set to cover the dust. Since the spray of the nozzles 5 is usually in an umbrella shape, this will cause some water mist not to participate in dust suppression, so there is a problem of waste of water resources. By setting the water supply pipe 3 into a structure that moves back and forth, the above problem of waste of water resources can be effectively solved, and the dust suppression coverage range is ensured.

[0024] Furthermore, a control mechanism 6 for controlling the forward and backward movement of the water supply pipe 3 is provided on the top of the material guide chute 2 , and the control mechanism 6 is used to control the forward and backward reciprocating movement of the water supply pipe 3 .

[0025] Specifically, the control mechanism 6 includes a control motor 61, a positioning plate 62 and a shift shaft 63. The two ends of the positioning plate 62 are welded to the tops of the two long tubes on the short pipe 4. The control motor 61 is fixedly provided with the top of the material guide trough 2 and its output shaft is fixedly connected with the cantilever 611. The shift shaft 63 and the positioning plate 62 are slidably matched and one end of the shift shaft is rotatably connected to one end of the cantilever 611. When the control motor 61 is started, it drives the shift shaft 63 to revolve. When the shift shaft 63 revolves, it drives the positioning plate 62 to move forward and backward, thereby driving the water supply pipe 3 to move forward and backward.

[0026] In the specific implementation, it is preferred that a positioning sleeve 6111 is welded to one end of the cantilever 611 and is sleeved on the outside of the shift shaft 63. The positioning sleeve 6111 and the positioning sleeve 6111 are rotatably connected. A guide groove 621 is penetrated through one side of the positioning plate 62, and a slider 631 is fixedly sleeved on the shift shaft 63 and is slidably connected to the guide groove 621.

[0027] A water inlet pipe 31 is provided on the short connecting pipe 4. When in use, the water inlet pipe 31 is connected to the external water supply pipeline through a hose. There are two water inlet pipes 31, which are respectively located on two short pipes on the water supply pipe 3. This makes the spray amount of all the nozzles 5 on the water supply pipe 3 approximately uniform.

[0028] In this embodiment, a suspension plate 21 close to the top is welded on the left and right sides of the material guide trough body 2, and a guide sleeve 212 for sleeve-mounted on the outside of the water supply pipe 3 is welded on the top of the suspension plate 21 through a support plate 211. Preferably, the number of the suspension plates 21 is at least three and they are evenly spaced, and the water supply pipe 3 moves back and forth along the guide sleeve 212.

[0029] Furthermore, a supporting groove wheel 213 located on one side of the guide sleeve 212 is provided at the top of the suspension plate 21. The supporting groove wheel 213 serves to lift the load water supply pipe 3. This arrangement can improve the smoothness of the sliding fit between the water supply pipe 3 and the guide sleeve 212.

[0030] Working principle: When in use, when the conveyor belt 1 is running to transport coal, due to the vibration of the conveyor belt 1 and the impact of the airflow in the guide trough 2, part of the coal powder in the guide trough 2 will overflow from the contact point between the guide trough 2 and the conveyor belt 1. At this time, the external water supply system is turned on, and water with a certain pressure enters the water supply pipe 3. After the water passes through each short pipe 4, the umbrella-shaped water mist is sprayed out by the nozzle 5 to realize the fixed-point dust suppression function. Then the control motor 61 is started, and the cantilever 611 drives the dial shaft 63 to revolve. The dial shaft 63 rotates and pushes the entire water supply pipe 3 to move forward and backward through the positioning plate 62, thereby driving the nozzle 5 to move forward and backward, thereby increasing the dust suppression coverage and realizing the function of comprehensive dust suppression.

[0031] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. Dust suppression device for a fully enclosed material guiding trough, comprising a conveyor belt (1) and a material guiding trough body (2) located above the conveyor belt (1). Sealing members are provided between the bottom of the left and right sides of the material guiding trough body (2) and the upper end surface of the conveyor belt (1). It is characterized in that, A rectangular frame-shaped water supply pipe (3) is sleeved on the top of the material guiding trough body (2). A short connecting pipe (4) located on the outer periphery of the material guiding trough body (2) is fixedly arranged at the bottom of the water supply pipe (3). A spray head (5) is connected to the bottom of the short connecting pipe (4). The water supply pipe (3) and the material guiding trough body (2) are in sliding fit in the front and back directions. A control mechanism (6) for controlling the forward and backward movement of the water supply pipe (3) is arranged on the top of the material guiding trough body (2). A water inlet pipe (31) is arranged on the short connecting pipe (4).

2. The dust suppression device for the fully enclosed material guiding trough according to claim 1, wherein: Suspension plates (21) close to the top are welded on the left and right sides of the material guiding trough body (2). A guide sleeve (212) sleeving the outside of the water supply pipe (3) is welded on the top of the suspension plate (21) through a support plate (211).

3. The dust suppression device for the fully enclosed material guiding trough according to claim 2, characterized in that: A support grooved wheel (213) located on one side of the guide sleeve (212) is arranged on the top of the suspension plate (21).

4. The dust suppression device for the fully enclosed material guiding trough according to claim 2, characterized in that: The number of the suspension plates (21) is at least three and they are distributed at equal intervals.

5. The dust suppression device for the fully enclosed material guiding trough according to claim 1, characterized in that: The control mechanism (6) includes a control motor (61), a positioning plate (62) and a dial shaft (63). Both ends of the positioning plate (62) are welded and connected to the tops of two long pipes on the short connecting pipe (4). The control motor (61) is fixedly arranged on the top of the material guiding trough body (2) and its output shaft is fixedly connected with a cantilever (611). The dial shaft (63) is in sliding fit with the positioning plate (62) and one end of it is rotatably connected with one end of the cantilever (611).

6. The dust suppression device for the fully enclosed material guiding trough according to claim 5, characterized in that: A positioning sleeve (6111) sleeving the outside of the dial shaft (63) is welded on one end of the cantilever (611). The positioning sleeve (6111) is rotatably connected with the positioning sleeve (6111). A guide groove (621) is formed through one side of the positioning plate (62). A slider (631) slidably connected with the guide groove (621) is fixedly sleeved on the dial shaft (63).

7. The dust suppression device for the fully enclosed material guiding trough according to claim 1, wherein: The number of the water inlet pipes (31) is two and they are respectively arranged on two short pipes on the water supply pipe (3).

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