Automatic coal dust collecting device for coal conveying belt

Abstract

The utility model discloses an automatic coal dust collecting device for a coal conveying belt, and relates to the technical field of coal dust collection. Protective frames are arranged on the two sides of the coal conveying belt, a miniature conveying belt mechanism is arranged on the lower side of the tail of the coal conveying belt, baffles are arranged on the outer sides of the protective frames on the two sides of the coal conveying belt and incline towards one side of the miniature conveying belt mechanism from top to bottom, and spraying devices are arranged on the protective frames between the baffles and the coal conveying belt. A collecting groove is formed in the lower side of the tail of one side of the micro conveying belt mechanism, the scraper is installed on the side face of the tail of the WeChat conveying belt, the pendulum bob is fixed to a support of the WeChat conveying belt, and the connecting rod is connected with the pendulum bob and the driving motor. The coal dust removing device can automatically carry out dust falling, dust removing and collecting on coal dust formed at the tail of the coal conveying belt, coal conveying loss is reduced, and potential safety hazards of coal accumulation are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coal dust collection, and more specifically, it relates to an automatic coal dust collection device for a coal conveying belt. Background Art

[0002] A coal conveying belt is a flat internal conveying device used in coal mining, transportation, and utilization plants / sites such as thermal power plants, coal mines, coal transfer terminals / cargo stations, etc. A coal conveying system usually includes multiple coal conveying belts connected in series, and a coal dropping cylinder is installed between the front and rear two coal conveying belts for the front and rear transfer of coal. When the coal on the front-section coal conveying belt falls into the coal dropping cylinder at the tail of the belt, due to the large drop, a large amount of coal dust is generated. The coal dust diffuses around and finally falls to the ground. After one shift of operation, there is usually a thick layer of coal dust at the tail of the belt.

[0003] Currently, the method of manual operation is adopted. After each shift of operation, the cleaning personnel use a high-pressure water gun to wash the ground, and finally the coal dust flows into the coal sewage tank together with the water. Since a protective net and protective fence are usually installed at the tail of the belt conveyor equipment, and there are many auxiliary equipment, it is difficult for the water gun to clean the lower area under the tail of the belt conveyor, especially in the north where water is scarce and the water consumption is low. Therefore, there is often a thick layer of coal dust under the tail of the belt conveyor. The scattered coal dust accumulates into accumulated coal, which is easy to oxidize, heat up, and finally self-ignite in the air, damaging the belt and even causing a fire, seriously affecting the safety of the coal conveying system. At the same time, the coal dust washed away also causes coal loss during the conveying process and reduces the coal utilization rate. The current solution is to increase manual operation. In addition to washing with a water gun, manual mechanical cleaning and collection are added, which requires a large number of people and has a high labor intensity. Content of the Utility Model

[0004] The utility model overcomes the deficiencies that it is difficult to clean and sweep under the tail of the traditional coal conveying belt, easy to form accumulated coal, and the long-term accumulated coal is easy to oxidize and self-ignite, which is an important safety hazard for the operation of the coal conveying system. At the same time, the washing of coal dust causes coal loss. The utility model provides an automatic coal dust collection device for a coal conveying belt, which can automatically reduce dust, remove dust, and collect the coal dust formed at the tail of the coal conveying belt, reduce the coal loss during coal conveying, and reduce the safety hazard of accumulated coal.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme: an automatic coal dust collection device for a coal conveying belt, including a coal conveying belt, protective frames are arranged on both sides of the coal conveying belt, a micro conveyor belt mechanism is arranged on the lower side of the tail of the coal conveying belt, baffles are arranged on the outer sides of the protective frames on both sides of the coal conveying belt, the baffles are inclined downward from top to bottom towards the side of the micro conveyor belt mechanism, a spraying device is arranged on the protective frame between the baffle and the coal conveying belt, and a collection tank is arranged on the lower side of the tail of one side of the micro conveyor belt mechanism.

[0006] The specific implementation method is as follows. The spray device and the micro-conveyor belt mechanism can be controlled by the remote PLC, so that the system and the coal conveyor belt work in conjunction. When the coal conveyor belt starts to work, the spray device sprays water mist. The coal dust generated after the tail of the coal conveyor belt falls into the coal drop bucket condenses into particles under the action of the water mist and falls onto the coal conveyor belt and the baffle. Part of the coal dust on the coal conveyor belt falls into the coal drop bucket with the coal flow (which belongs to the prior art and will not be described here), and part of it sticks to the belt and falls onto the micro-conveyor belt mechanism when the coal conveyor belt returns. The tail area of ​​the coal conveyor belt with the most coal dust automatically collects the coal dust, reducing manual sweeping and cleaning work; reducing the coal accumulation under the coal conveyor belt, improving the operating safety of the coal conveyor belt, and reducing transportation losses.

[0007] Preferably, the micro conveyor belt mechanism includes two sets of mounting brackets arranged on the lower side of the baffle, a micro conveyor belt is arranged between the two sets of mounting brackets, a first control motor is arranged next to the mounting bracket on the side away from the collecting tank, and the first control motor is connected to the micro conveyor belt transmission. The first control motor is started by remote PLC control, and the start of the first control motor can drive the micro conveyor belt transmission, and the micro conveyor belt transmission drives the upper side coal dust and coal dust particles from the tail end into the collecting tank.

[0008] Preferably, the spray device includes a control valve connected to a remote PLC, a high-pressure water pipe connected to the control valve is provided on the protective frame, and a plurality of spray heads are provided at intervals on the high-pressure water pipe between the coal conveyor belt and the baffle.

[0009] As a preferred embodiment, a pendulum mechanism is also included, which includes a driving shaft arranged on a mounting bracket, a pendulum bracket is arranged on the driving shaft, the pendulum bracket is in a "U"-shaped structure, the middle sections of the connecting rods on both sides of the pendulum bracket are fixedly connected to the driving shaft, a pendulum is arranged at the end of the connecting section, a second control motor is arranged on the protective frame, and a connecting rod is arranged between the second control motor and the driving shaft. Most of the coal dust on the baffle falls onto the micro conveyor belt by itself, and part of it sticks to the baffle. Under the action of the second control motor, the pendulum intermittently strikes the baffle, so that the coal dust on the baffle falls onto the micro conveyor belt.

[0010] Preferably, the end of the pendulum near the baffle is hemispherical. The hemispherical pendulum head design can concentrate the stress when hitting the baffle, increase the amplitude of the baffle, and make it easier for the firmly attached coal dust to fall off.

[0011] Preferably, a scraper is provided on the mounting bracket near one side of the collecting trough, and the scraper is located at the lower side of the tail of the mini conveyor belt. At the tail of the mini conveyor belt, the coal dust on the mini conveyor belt is scraped off and collected by the scraper and the collecting trough.

[0012] Preferably, a feeding trough is provided in the wall of the baffle plate near the protective frame, which is conducive to the collection of coal dust by the baffle plate.

[0013] Preferably, an opening is provided between the baffle and the protective frame. The opening design enables the baffle and the protective frame to send out coal dust from between them while not affecting the connection.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: In the tail area where the coal dust on the coal conveying belt is the most, coal dust is automatically collected, reducing manual cleaning work; reducing the accumulated coal under the coal conveying belt, improving the operation safety of the coal conveying belt, and reducing the conveying loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of an automatic coal dust collection device for a coal conveying belt of the present utility model.

[0016] Figure 2 is a schematic structural diagram of a unilateral coal dust automatic collection device of the present utility model.

[0017] In the figure: Coal conveying belt 100; Protective frame 101;

[0018] Micro conveyor belt mechanism 200; Mounting bracket 201; Vertical column 202; First output rotating shaft 203; Second output rotating shaft 204; Micro conveyor belt 205; First control motor 206; Motor mounting seat 207; Pulley one 208; Belt 209; Pulley two 210;

[0019] Baffle 300; Feeding trough 301;

[0020] Spraying device 400; Control valve 401; High-pressure water pipe 402; Spray head 403;

[0021] Collection trough 500;

[0022] Pendulum mechanism 600; Driving rotating shaft 601; Pendulum support 602; Pendulum 603; Second control motor 604; Connecting rod 605; Side connecting rod 606; Connecting main rod 607; Triangular support frame 608; Runner 609;

[0023] Scraper 700; Support rod 701, DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The technical solutions of the utility model will be further specifically described below through specific embodiments and in combination with the drawings:

[0025] Embodiment 1: Refer to the attached Figure 1 , attached Figure 2, an automatic coal dust collection device for a coal conveyor belt, comprising a coal conveyor belt 100, a protective frame 101 is provided on both sides of the coal conveyor belt 100, a micro conveyor belt mechanism 200 is provided at the lower side of the tail of the coal conveyor belt, baffles 300 are provided outside the protective frames 101 on both sides of the coal conveyor belt 100, and the baffles 300 are inclined from top to bottom toward one side of the micro conveyor belt mechanism 200, and a spray device 400 is provided on the protective frame 101 between the baffle 300 and the coal conveyor belt 100, and the spray device 400 and the micro conveyor belt mechanism 200 can be controlled by a remote PLC, so that the system and the coal conveyor belt 100 work in linkage. The spray device 400 sprays water mist, and the coal dust generated after the tail of the coal conveyor belt 100 falls into the coal drop tube condenses into particles under the action of the water mist and falls onto the coal conveyor belt 101 and the baffle 300. A collection trough 500 is provided at the lower side of the tail of one side of the micro conveyor belt mechanism 200.

[0026] The spray device 400 and the micro conveyor belt mechanism 200 can be controlled by remote PLC, so that the system and the coal conveyor belt 100 work in conjunction. When the coal conveyor belt 100 starts to work, the spray device 400 sprays water mist, and the coal dust generated after the tail of the coal conveyor belt 100 falls into the coal drop bucket condenses into particles under the action of the water mist and falls on the coal conveyor belt 100 and the baffle 300. Part of the coal dust on the coal conveyor belt 100 falls into the coal drop bucket (which belongs to the prior art and is not described here) with the coal flow, and part of it sticks to the belt and falls on the micro conveyor belt mechanism 200 when the coal conveyor belt 100 returns. The tail area of ​​the coal conveyor belt 100 with the most coal dust automatically collects coal dust, reducing manual cleaning and cleaning work; reducing the coal accumulation under the coal conveyor belt 100, improving the operation safety of the coal conveyor belt 100, and reducing the loss of transportation.

[0027] The micro conveyor mechanism 200 includes two groups of mounting brackets 201 arranged on the lower side of the baffle 300, an output shaft is arranged between the vertical columns 202 on the same side, a micro conveyor 205 is arranged between the two groups of output shafts, and a first control motor 206 is arranged next to the mounting bracket 201 on the side away from the collecting tank 500. The first control motor 206 is fixed on a motor mounting seat 207 fixedly installed on the ground, and the first control motor 206 is connected to the output shaft on the side away from the collecting tank 500. When the coal conveyor belt starts to work, the first control motor 206 is started by remote PLC control, and the first control motor starts to drive the output shaft and the micro conveyor 205 in turn. The micro conveyor 205 rotates to drive the upper coal dust and coal dust particles from the tail end into the collecting tank 500.

[0028] The spray device 400 includes a control valve 401 connected to a remote PLC. A high-pressure water pipe 402 connected to the control valve 401 is provided on the protective frame 101. The high-pressure water pipe 402 is arranged along the upper-side protection direction of the protective frame 101. The control valve 401 is fixedly installed on the protective frame 101. Five spray heads 403 are vertically provided on the upper side of the high-pressure water pipe 402 between the coal conveyor belt 100 and the baffle 300, and the five spray heads 403 are arranged at equal intervals. When the coal conveyor belt starts to work, the control valve 401 is opened, and the five groups of spray heads 403 spray water mist simultaneously. The coal dust generated after the tail of the coal conveyor belt 100 falls into the coal dropping cylinder condenses into particles under the action of the water mist and falls onto the coal conveyor belt 101 and the baffle 300.

[0029] The specific implementation method is as follows: The control valve 401 and the first control motor 206 can be controlled by a remote PLC, so that the system is linked with the operation of the coal conveyor belt 100. When the coal conveyor belt 100 starts to work, the control valve 401 is opened, and the five groups of spray heads 403 spray water mist simultaneously. The coal dust generated after the tail of the coal conveyor belt 100 falls into the coal dropping cylinder condenses into particles under the action of the water mist and falls onto the coal conveyor belt 101 and the baffle 300. Part of the coal dust on the coal conveyor belt 100 falls into the coal dropping cylinder along with the coal flow (which is prior art and will not be elaborated here), and part adheres to the belt and falls onto the micro conveyor belt 205 when the coal conveyor belt 100 returns. By remotely controlling the first control motor 206 to start, the first control motor 206 drives the output rotating shaft and the micro conveyor belt 205 to drive in sequence. The rotation of the micro conveyor belt 205 drives the coal dust and coal dust particles on the upper side to be fed into the collection tank 500 from the tail end. In the tail area of the coal conveyor belt 100 with the most coal dust, coal dust is automatically collected, reducing manual cleaning work; reducing the accumulated coal under the coal conveyor belt 100, improving the operation safety of the coal conveyor belt 100, and reducing transportation losses.

[0030] Embodiment 2:

[0031] See Appendix Figure 1 Appendix Figure 2, This embodiment further defines the micro-conveying mechanism 200 on the basis of Embodiment 1. The micro-conveyor belt mechanism 200 includes two sets of mounting brackets 201 arranged on the lower side of the baffle 300. The mounting brackets 201 are in an "H" shape and include two vertically arranged columns 202 arranged in parallel. The bottom of the vertical columns 202 is fixed to the ground. An output rotating shaft is provided between the vertical columns 202 on the same side. Among them, the output rotating shaft close to the collection tank 500 is the first output rotating shaft 203, and the output rotating shaft far from the collection tank 500 is the second output rotating shaft 204. A micro-conveyor belt 205 is provided between the two sets of output rotating shafts. A first control motor 206 is provided beside the mounting bracket 201 on the side far from the collection tank 500. The first control motor 206 is fixedly installed on a motor mounting seat 207 fixed to the ground. A pulley one 208 is fixedly connected to the output shaft of the first control motor 206. A pulley two 210 is fixedly provided at the end of the second output shaft 204. A belt 209 is provided between the pulley one 208 and the pulley two 210.

[0032] When the coal conveyor belt starts to work, the first control motor 206 is started through remote PLC control. The start of the first control motor drives the pulley one 208, the belt 209, the pulley two 210, the second output shaft 204, the micro-conveyor belt 205, and the first conveyor shaft 203 to drive in sequence. The rotation of the micro-conveyor belt 205 drives the coal dust and coal dust particles on the upper side to be fed into the collection tank 500 from the tail end.

[0033] Embodiment 3:

[0034] See attached Figure 1 attachment Figure 2 , This embodiment adds a pendulum mechanism 600 on the basis of Embodiment 1. The pendulum mechanism 600 includes a driving rotating shaft 601 arranged on the mounting bracket 201. A pendulum bracket 602 is provided on the driving rotating shaft 601. The pendulum bracket 602 is in a "U" shape. The middle sections of the side connecting rods on both sides of the pendulum bracket 602 are fixedly connected to the driving rotating shaft 601. A pendulum 603 is provided at the end of the connecting section on the mounting bracket 201. A second control motor 604 is provided on the protective frame 101. A connecting rod 605 is provided between the second control motor 604 and the pendulum bracket 602. Most of the coal dust on the baffle 300 falls onto the micro-conveyor belt 205 by itself, and part of it adheres to the baffle 300. The pendulum 603 intermittently strikes the baffle 300 under the action of the second control motor 604, so that the coal dust on the baffle 300 falls onto the micro-conveyor belt 205.

[0035] See attached Figure 1 attachment Figure 2, the specific implementation of the pendulum mechanism 600 is as follows. When the second control motor 604 is started, the second control motor 604 drives the connecting rod 605 to swing. The swinging of the connecting rod 605 drives the pendulum support 602 to swing around the driving rotating shaft 601. The swinging of the pendulum support 602 drives the pendulum 603 to swing back and forth, realizing the intermittent knocking of the pendulum 603 on the baffle 300.

[0036] Embodiment 4:

[0037] See the appendix Figure 1 , appendix Figure 2 , in this embodiment, a pendulum mechanism 600 is added on the basis of Embodiment 2. The pendulum mechanism 600 includes a driving rotating shaft 601 arranged on the mounting bracket 201, specifically at the position between the adjacent vertical line columns 202 on the same side, which is located above the output rotating shaft. A pendulum support 602 is arranged on the driving rotating shaft 601. The pendulum support 602 has a "U" - shaped structure, that is, it is composed of two groups of parallel - arranged side connecting rods 606 and a connecting main rod 607 arranged between the side connecting rods 606. The middle positions of the side connecting rods 606 on both sides of the pendulum support 602 are fixedly connected to the driving rotating shaft 601. A pendulum 603 is arranged at the end of the side connecting rod 606 on the mounting bracket 201. There is a triangular support frame 608 on the side wall of the protective frame 101, and a second control motor 604 is fixedly arranged on the triangular support frame 608. A runner 609 is arranged on the output shaft of the second control motor 604. A connecting rod 605 is arranged between the side wall of the runner 609 and the side wall of the side connecting rod 606 close to the connecting main rod 607. Most of the coal dust on the baffle 300 falls onto the micro - conveyor belt 105 by itself, and part of it adheres to the baffle 300. The pendulum 603 intermittently knocks on the baffle 300 under the action of the second control motor 604, so that the coal dust on the baffle 300 falls onto the micro - conveyor belt 205. The specific implementation of the pendulum mechanism 600 is as follows. When the second control motor 604 is started, the second control motor 604 drives the runner 609 to rotate. The rotation of the runner 609 drives the connecting rod 605 to swing. The swinging of the connecting rod 605 drives the pendulum support 602 to swing around the driving rotating shaft 601. The swinging of the pendulum support 602 drives the pendulum 603 to swing back and forth, realizing the intermittent knocking of the pendulum 603 on the baffle 300.

[0038] The specific implementation method is as follows: The control valve 401 and the first control motor 206 can be controlled by a remote PLC, so that the system is linked with the operation of the coal conveying belt 100. When the coal conveying belt 100 starts to operate, the control valve 401 opens, and the five groups of spray heads 403 spray water mist simultaneously. The coal dust generated after the tail of the coal conveying belt 100 falls into the coal dropping cylinder condenses into particles under the action of the water mist and then falls onto the coal conveying belt 101 and the baffle 300. Part of the coal dust on the coal conveying belt 100 falls into the coal dropping cylinder along with the coal flow (which belongs to the prior art and will not be elaborated here), part adheres to the belt and falls onto the micro conveyor belt 205 when the coal conveying belt 100 returns. Most of the coal dust on the baffle 300 automatically falls onto the micro conveyor belt 205, and part adheres to the baffle 300. By remotely controlling the PLC to start the second control motor 604, the second control motor 604 starts to drive the runner 609 to rotate. The rotation of the runner 609 drives the connecting rod 605 to swing. The swing of the connecting rod 605 drives the pendulum support 602 to swing around the driving rotating shaft 601. The swing of the pendulum support 602 drives the pendulum 603 to swing reciprocally, realizing the intermittent knocking of the pendulum 603 on the baffle 300, so that the coal dust on the baffle 300 falls onto the micro conveyor belt 205. By remotely controlling the PLC to start the first control motor 206, the first control motor 206 starts to drive the output rotating shaft and the micro conveyor belt 205 to drive in sequence. The rotation of the micro conveyor belt 205 drives the coal dust and coal dust particles on the upper side to be fed into the collection tank 500 from the tail end. In the tail area of the coal conveying belt 100 with the most coal dust, coal dust is automatically collected, reducing manual cleaning work; reducing the accumulated coal under the coal conveying belt 100, improving the operation safety of the coal conveying belt 100, and reducing the conveying loss.

[0039] Example 5:

[0040] See attached Figure 1 , attached Figure 2 , this embodiment further limits the pendulum 603 on the basis of Embodiment 3 or Embodiment 4. The end of the pendulum 603 close to the baffle is hemispherical. The design of the hemispherical pendulum head can make the stress concentration when the pendulum 603 intermittently knocks on the baffle 300, increase the amplitude of the baffle, and make the firmly attached coal dust easier to break away.

[0041] Example 6:

[0042] See attached Figure 1 , attached Figure 2, in this embodiment, a scraper 700 is additionally provided on the basis of Embodiment 5. A support rod 701 is provided on the mounting bracket 201 between the output rotating shaft and the collection tank 500. The scraper 700 is fixedly arranged on the support rod 701, and the end of the scraper 700 is attached to the lower side edge of the tail of the micro conveyor belt 205. At the tail of the micro conveyor belt 205, the coal dust on the micro conveyor belt 205 is scraped off and collected through the scraper 700 and the collection tank 500.

[0043] Embodiment 5:

[0044] See Appendix Figure 1 , Appendix Figure 2 , in this embodiment, a further limitation is made on the baffle 300 on the basis of Embodiment 4. A feeding groove 301 that penetrates up and down is provided in the wall body of the baffle close to the side of the protective frame 101. This is beneficial to the collection of coal dust by the baffle 301.

[0045] Embodiment 6:

[0046] See Appendix Figure 1 , Appendix Figure 2 , in this embodiment, a further limitation is made on the baffle on the basis of Embodiment 5. An opening is provided between the baffle and the protective frame. The opening design enables the baffle and the protective frame to send out coal dust between them while not affecting the connection, that is, it is beneficial to send the coal dust onto the micro conveyor belt 205 through the baffle 301.

Claims

1. An automatic coal dust collection device for a coal conveyor belt, comprising a coal conveyor belt, and protective frames are arranged on both sides of the coal conveyor belt, wherein: A micro-conveyor belt mechanism is provided at the lower side of the tail of the coal conveyor belt, and baffles are provided on the outer sides of the protective frames on both sides of the coal conveyor belt. The baffles are inclined from top to bottom toward one side of the micro-conveyor belt mechanism. A spray device is provided on the protective frame between the baffle and the coal conveyor belt, and a collecting trough is provided at the lower side of the tail of one side of the micro-conveyor belt mechanism.

2. The automatic coal dust collection device for coal conveyor belt according to claim 1 is characterized in that the micro The conveyor belt mechanism includes two groups of mounting brackets arranged on the lower side of the baffle, a micro conveyor belt is arranged between the two groups of mounting brackets, and a first control motor is arranged next to the mounting bracket on the side away from the collecting tank, and the first control motor is transmission-connected to the micro conveyor belt.

3. The automatic coal dust collection device for a coal conveyor belt according to claim 2 is characterized in that: The spray device comprises a control valve connected to a remote PLC, a high-pressure water pipe connected to the control valve is arranged on the protective frame, and a plurality of spray heads are arranged at intervals on the high-pressure water pipe between the coal conveyor belt and the baffle.

4. The automatic coal dust collection device for a coal conveyor belt according to any one of claims 1 to 3, characterized in that: It also includes a pendulum mechanism, which includes a driving shaft arranged on a mounting bracket, a pendulum bracket being provided on the driving shaft, the pendulum bracket being in a "U"-shaped structure, the middle sections of the connecting rods on both sides of the pendulum bracket being fixedly connected to the driving shaft, a pendulum being provided at the end of the connecting section, a second control motor being provided on the protective frame, and a connecting rod being provided between the second control motor and the driving shaft.

5. The automatic coal dust collection device for a coal conveyor belt according to claim 4 is characterized in that: The end of the pendulum close to the baffle is hemispherical.

6. The automatic coal dust collection device for a coal conveyor belt according to claim 5 is characterized in that: A scraper is arranged on a mounting bracket close to one side of the collecting tank, and the scraper is located at the lower side of the tail of the micro conveyor belt.

7. The automatic coal dust collection device for a coal conveyor belt according to claim 6 is characterized in that: A feeding trough which passes through from top to bottom is arranged in the wall body of the baffle plate close to the protective frame.

8. The automatic coal dust collection device for a coal conveyor belt according to claim 7 is characterized in that: An opening is arranged between the baffle plate and the protective frame.

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