CN113620031A

CN113620031A - Clean composite set of thermoelectricity coal conveying system

Info

Publication number: CN113620031A
Application number: CN202110964018.3A
Authority: CN
Inventors: 张德镛
Original assignee: Hangzhou Hangmin Jiangdong Thermalelectricity Co ltd
Current assignee: Hangzhou Hangmin Jiangdong Thermalelectricity Co ltd
Priority date: 2021-08-21
Filing date: 2021-08-21
Publication date: 2021-11-09
Anticipated expiration: 2041-08-21
Also published as: CN113620031B

Abstract

The utility model relates to a clean composite set of thermoelectric coal conveying system, including outdoor coal conveying belt, the below of outdoor coal conveying belt exit end is equipped with the coal breakage pipe, the coal breakage pipe includes the upper branch pipe and sets up the lower branch pipe in upper branch pipe bottom both sides, the below of two lower branch pipes all is equipped with indoor coal conveying belt, it is provided with first shutoff board and second shutoff board to all slide in two lower branch pipes, be equipped with the drive seat between two indoor coal conveying belts, the top of drive seat is equipped with driving motor, driving motor's top is equipped with the drive shaft along vertical direction, driving motor's output shaft and drive shaft coaxial line are connected, be equipped with the first driving piece that is used for driving first shutoff board to shift out the lower branch pipe in the drive shaft and be used for driving the second driving piece that the second shutoff board moved into the lower branch pipe. This application can reduce the speed of coal when falling to the reduction is to the impact of indoor coal conveyor belt, thereby improves the dust fall effect.

Description

Clean composite set of thermoelectricity coal conveying system

Technical Field

The application relates to the field of thermoelectric engineering, in particular to a cleaning combination device of a thermoelectric coal conveying system.

Background

The thermal power plant utilizes coal to heat water to generate steam, and the steam is used for generating electricity and supplying heat for users at the same time. The used coal of boiler is conveyed to the top of boiler room through outdoor coal conveying belt by former coal bunker or unloading ditch, in the different boilers are distribute to inside coal conveying belt of boiler room again, when the coal falls into inside coal conveying belt by outdoor coal conveying belt, because there is the drop between the two, consequently can produce a large amount of dusts after the coal falls down, and the diffusion everywhere leads to the boiler room internal environment abominable, influences that the workman is healthy and equipment life.

In order to solve the problems, a coal dropping pipe is arranged between the end of an outdoor coal conveying belt and a coal receiving position of an indoor coal conveying belt at present and is used for reducing the diffusion of dust after coal dropping. However, the coal directly hits the indoor coal belt after falling, the damage to the indoor coal belt is large, and the dust generated at the moment of falling is still large.

Disclosure of Invention

In order to reduce the speed of coal when falling to reduce the impact to indoor coal conveying belt, thereby improve the dust fall effect, this application provides a clean composite set of thermoelectric coal conveying system.

The application provides a clean composite set of thermoelectricity coal conveying system adopts following technical scheme:

a cleaning combination device of a thermoelectric coal conveying system comprises an outdoor coal conveying belt, a coal dropping pipe is arranged below the outlet end of the outdoor coal conveying belt and comprises an upper branch pipe and lower branch pipes arranged on two sides of the bottom of the upper branch pipe, indoor coal conveying belts are arranged below the two lower branch pipes, a first blocking plate and a second blocking plate are arranged in the two lower branch pipes in a sliding mode, the length directions of the first blocking plate and the second blocking plate are perpendicular to the length direction of the lower branch pipes, a driving seat is arranged between the two indoor coal conveying belts, a driving mechanism is arranged at the top of the driving seat and comprises a driving motor, a driving shaft is arranged at the top of the driving motor in the vertical direction, an output shaft of the driving motor is coaxially connected with the driving shaft, and a first driving piece and a second driving piece are arranged on the driving shaft, the first driving piece is used for driving the first plugging plate to move out of the lower branch pipe, and the second driving piece is used for driving the second plugging plate to move into the lower branch pipe.

By adopting the technical scheme, in an initial state, the first plugging plate is positioned in the lower support pipe, the second plugging plate is positioned outside the lower support pipe, at the moment, the first plugging plate plugs the lower support pipe, so that the fallen materials are temporarily stored on the first plugging plate after entering the lower support pipe, in the process of driving the driving shaft to rotate by the driving motor, the driving shaft drives the first driving piece and the second driving piece to synchronously move, the first driving piece drives the first plugging plate to move out of the lower support pipe in the motion process, the second driving piece drives the second plugging plate to move into the lower support pipe in the motion process, and in the process, the materials on the first plugging plate fall into the second plugging plate to be temporarily stored; and starting the driving motor and driving the driving shaft to rotate reversely, so that the first driving part and the second driving part move reversely, the first plugging plate is moved into the lower support pipe again in the process, the second plugging plate is moved out of the lower support pipe, and the materials accumulated on the second plugging plate can fall out of the lower support pipe. Because the materials are buffered for many times in the lower support pipe, the falling material speed is greatly reduced, so that the impact on an indoor coal conveying belt when the materials fall out is reduced, and the dust settling effect in a workshop is improved.

Optionally, the first driving part includes a first wire spool and two first driving ropes, the first wire spool is coaxially disposed on the driving shaft, the two first driving ropes are respectively connected to two opposite sides of the first wire spool, and one end of the first driving rope, which is far away from the first wire spool, is fixedly connected to the first plugging plate.

Through adopting above-mentioned technical scheme, when driving motor corotation, first wire reel can be simultaneously around rolling up two first drive ropes along with drive shaft pivoted in-process promptly, and the one end that first wire reel was kept away from to two first drive ropes is stimulateeed two first shutoff boards simultaneously, makes two first shutoff boards shift out to down outside of the tubes simultaneously to make the material pass through.

Optionally, the two first plugging plates are arranged on one side, close to each other, of the two lower support pipes in a one-to-one correspondence manner, one end of each first plugging plate is slidably arranged in the lower support pipe, the other end of each first plugging plate is provided with a first connecting plate, a tension spring is arranged between each first connecting plate and the lower support pipe, and the first driving rope is fixedly connected with the first connecting plate.

Through adopting above-mentioned technical scheme, at the in-process of driving motor reversal, first wire reel can make the first driving rope of coiling scatter along with drive shaft pivoted in-process promptly, and first driving rope no longer applys pulling force to first shutoff board this moment, and the extension spring drives first shutoff board through first connecting plate and removes in the branch pipe downwards under self elastic action to with the lower branch pipe shutoff, make the material exist temporarily on the first shutoff board.

Optionally, the second driving element includes a second wire spool and two second driving ropes, the second wire spool is coaxially disposed on the driving shaft and located below the first wire spool, the two second driving ropes are respectively connected to two opposite sides of the second wire spool, and one end of the second driving rope, which is far away from the second wire spool, is fixedly connected to the second plugging plate.

Through adopting above-mentioned technical scheme, when driving motor corotation, the second wire reel can be simultaneously around rolling up two second driving ropes along with drive shaft pivoted in-process promptly, and the one end that the second wire reel was kept away from to two second driving ropes is stimulateeed two second shutoff boards simultaneously, makes the inside removal of second shutoff board branch pipe downwards to play the shutoff effect to the lower branch pipe, avoid the material directly to fall out and cause great impact force to indoor coal conveying belt from the lower branch pipe.

Optionally, the two second plugging plates are arranged on one surface of the two lower support pipes, which is far away from each other, in a one-to-one correspondence manner, one end of each second plugging plate is slidably arranged in the lower support pipe, the other end of each second plugging plate is provided with a second connecting plate, a pressure spring is arranged between each second connecting plate and the lower support pipe, and the second driving rope penetrates through the lower support pipe and is fixedly connected with one end, located in the lower support pipe, of each second plugging plate.

Through adopting above-mentioned technical scheme, at the in-process of driving motor reversal, the second wire reel can make the second driving rope of coiling scatter along with drive shaft pivoted in-process promptly, and the second driving rope is no longer to applying pulling force to the second shutoff board this moment, and the pressure spring drives the second shutoff board through the second connecting plate under self elasticity and shifts out the branch pipe down to the messenger piles up the material on the second shutoff board and can fall out.

Optionally, one side of indoor coal conveyor belt is provided with and connects the work or material rest, connect to be provided with on the work or material rest and connect the workbin, connect the workbin to be located the lower branch pipe under, connect the articulated setting of the one end that the workbin is close to indoor coal conveyor belt and connect the work or material rest, the one end that connects the workbin to keep away from indoor coal conveyor belt is provided with the upset subassembly that is used for the drive to connect the work or material rest upset.

Through adopting above-mentioned technical scheme, connect the work or material rest and connect the workbin through the setting, the material at first can fall when falling out from the lower carriage and connect the workbin in, then the staff connects the workbin through the drive of upset subassembly to take place the upset, can pour the material into indoor coal conveyor belt in connecing the workbin promptly, connect the workbin can play further cushioning effect to the material to the impact force that indoor coal conveyor belt received has been reduced, with improve equipment's life.

Optionally, the upset subassembly includes upset rope and drive block, the spout has been seted up along self direction of height to one side that indoor coal conveyor belt was kept away from to the drive seat, the length direction slip setting of drive block along the spout is in the spout, the one end fixed connection of upset rope is on connecing the workbin, other end fixed connection is on the drive block.

Through adopting above-mentioned technical scheme, the drive block can stimulate the upset rope promptly when the length direction along the spout slides to the messenger connects the workbin to take place the upset, so that will connect the material of keeping in the workbin to pour into on the indoor coal conveyor belt.

Optionally, the driving motor is a double-shaft motor, a screw rod is arranged in the driving seat, two ends of the screw rod are respectively rotatably arranged on two end walls of the sliding groove, an output shaft of the driving motor, which is far away from one side of the driving shaft, is rotatably arranged in the driving seat and is coaxially connected with the screw rod, and the driving block is provided with a threaded hole and is sleeved on the screw rod.

Through adopting above-mentioned technical scheme, drive the lead screw pivoted in-process at driving motor, the drive block moves along the direction of height of spout under the drive of lead screw, can stimulate the workbin through the upset rope promptly at the in-process that the drive block removed to make and connect the workbin to take place the upset so that pour the material to indoor coal conveying belt.

Optionally, two be provided with dry fog between the indoor coal conveyor belt and suppress the dust machine, the top that dry fog suppressed the dust machine is provided with presses down the dirt pipe, it keeps away from the one end that dry fog suppressed the dust machine and is provided with the shunt tubes to press down the dirt pipe, the both ends of shunt tubes all are provided with and suppress the dust hood, it establishes the top at indoor coal conveyor belt to suppress the dust hood cover.

By adopting the technical scheme, the dry fog dust suppression machine can generate highly atomized water fog particles, the water fog particles are conveyed into the dust suppression cover through the dust suppression pipe and the flow dividing pipe, when materials in the material receiving box are poured into the indoor coal conveying belt, the water fog particles can fully collide with the dust particles to be condensed, and therefore the situation that the dust generated when the materials are poured into the indoor coal conveying belt is scattered into the air is avoided to a certain extent.

Optionally, the upper supporting pipe comprises a straight pipe and inclined pipes arranged on two sides of the bottom of the straight pipe, and a plurality of buffer plates are distributed on two inner walls, opposite to the inclined pipes, of the inclined pipes along the length direction of the inclined pipes.

Through adopting above-mentioned technical scheme, the material enters into the straight tube of upper branch pipe from outdoor coal conveyor belt after, shunts to two slashes at the end of straight tube in, and the polylith buffer board that distributes in the slash can play certain cushioning effect to the material that enters into in the slash to the speed when making the material enter into the lower branch intraductal reduces.

In summary, the present application includes at least one of the following beneficial technical effects:

1. according to the dust settling device, the first plugging plate and the second plugging plate are arranged in the lower branch pipe, the position of the first plugging plate is adjusted through the first driving piece, and the position of the second plugging plate is adjusted through the second driving piece, so that the second plugging plate moves into the lower branch pipe while the first plugging plate moves out of the lower branch pipe, the material in the lower branch pipe is buffered, the impact force generated when the material falls into an indoor coal conveying belt is reduced, and the dust settling effect is improved;

2. according to the coal conveying belt, the material receiving frame and the material receiving box are arranged, materials can firstly fall into the material receiving box when falling out of the lower support pipe, then workers drive the material receiving box to turn over through the turning assembly, namely the materials can be poured into the indoor coal conveying belt from the material receiving box, and the material receiving box can further buffer the materials to reduce the impact force on the indoor coal conveying belt, so that the service life of equipment is prolonged;

3. this application is through all setting up polylith buffer board on two inner walls that the pipe chute is relative, plays certain cushioning effect to the material that enters into in the pipe chute to speed when making the material enter into the lower carriage reduces.

Drawings

Fig. 1 is a schematic view of the overall structure of the present application.

FIG. 2 is a schematic structural diagram of a coal dropping pipe and a driving mechanism of the present application.

Fig. 3 is a schematic structural diagram of the first driving member and the first driving plate, and the second driving member and the second driving plate according to the present application.

Fig. 4 is a schematic view of the internal structure of the upper branch pipe of the present application.

Fig. 5 is a schematic structural view of the receiving box and the overturning assembly of the present application.

Fig. 6 is a schematic view of the installation structure of the turnover assembly on the driving seat.

Fig. 7 is a schematic view of the internal structure of the upper branch pipe of the present application.

Description of reference numerals: 1. an outdoor coal conveying belt; 2. a coal dropping pipe; 21. an upper branch pipe; 211. a straight pipe; 212. an inclined tube; 213. a buffer plate; 22. a lower branch pipe; 221. a first plugging plate; 2211. a first connecting plate; 2212. a tension spring; 222. a second plugging plate; 2221. a second connecting plate; 2222. a pressure spring; 3. an indoor coal conveying belt; 4. a driving seat; 41. a drive motor; 411. a drive shaft; 412. a first driving member; 4121. a first wire spool; 4122. a first drive rope; 413. a second driving member; 4131. a second spool; 4132. a second drive rope; 42. a lead screw; 43. a guide block; 5. a material receiving frame; 51. a material receiving box; 52. a turnover assembly; 521. turning over the rope; 522. a drive block; 6. a dry fog dust suppression machine; 61. a dust suppression pipe; 62. a shunt tube; 63. a dust suppression cover.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses a cleaning combination device of a thermoelectric coal conveying system, which comprises an outdoor coal conveying belt 1 installed outdoors, an indoor coal conveying belt 3 installed indoors and a coal dropping pipe 2 installed between the outdoor coal conveying belt 1 and the outdoor coal conveying belt 1, wherein the coal dropping pipe 2 comprises an upper branch pipe 21 and lower branch pipes 22 connected with two sides of the bottom of the upper branch pipe 21, an indoor coal conveying belt 3 is installed below each of the two lower branch pipes 22, a first blocking plate 221 and a second blocking plate 222 are arranged in each of the two lower branch pipes 22 in a sliding manner, the length directions of the first blocking plate 221 and the second blocking plate 222 are perpendicular to the length direction of the lower branch pipes 22, a driving seat 4 is installed between the two indoor coal conveying belts 3, a driving mechanism for driving the first blocking plate 221 and the second blocking plate 222 to move simultaneously is installed at the top of the driving seat 4, one side of indoor coal conveyor belt 3 is installed and is connect work or material rest 5, connects on the work or material rest 5 and be located down the branch pipe 22 and rotate to install and connect workbin 51, connects the articulated setting of one end that connects workbin 51 to be close to indoor coal conveyor belt 3 on connecing work or material rest 5, connects the one end that workbin 51 kept away from indoor coal conveyor belt 3 to install and is used for the drive to connect workbin 51 to the upset subassembly 52 that is close to indoor coal conveyor belt 3's direction upset.

Referring to fig. 2 and 3, the upper branch pipe 21 comprises a straight pipe 211 and inclined pipes 212 communicated with and arranged at two sides of the bottom of the straight pipe 211, the whole shape formed by combining the branch pipe and the two inclined pipes 212 is inverted Y-shaped, a plurality of buffer plates 213 are distributed on two opposite inner walls of the inclined pipes 212 along the length direction of the inclined pipes, after materials enter the straight pipe 211 of the upper branch pipe 21 from the outdoor coal conveying belt 1, the tail ends of the straight pipe 211 are divided into the two inclined pipes 212, and the plurality of buffer plates 213 distributed in the inclined pipes 212 can play a certain buffer role on the materials entering the inclined pipes 212, so that the speed of the materials entering the lower branch pipe 22 is reduced.

Referring to fig. 2, two first plugging plates 221 are installed on the surfaces, close to each other, of the two lower branch pipes 22 in a one-to-one correspondence manner, one end of each first plugging plate 221 is slidably inserted into the lower branch pipe 22, the other end of each first plugging plate is welded with a first connecting plate 2211, a tension spring 2212 is connected between each first connecting plate 2211 and the lower branch pipe 22, two second plugging plates 222 are installed on the surfaces, far away from each other, of the two lower branch pipes 22 in a one-to-one correspondence manner, one end of each second plugging plate 222 is slidably inserted into the lower branch pipe 22, the other end of each second plugging plate 2221 is welded with a second connecting plate 2221, and a compression spring 2222 is connected between each second connecting plate 2221 and the lower branch pipe 22. Under the condition of no external force, the first blocking plate 221 is inserted into the lower branch pipe 22 under the elastic force of the tension spring 2212, and the second blocking plate 222 is located outside the lower branch pipe 22 under the elastic force of the compression spring 2222. When the driving mechanism pulls the first blocking plate 221 and the second blocking plate 222 simultaneously, the first blocking plate 221 and the second blocking plate 222 move to the direction close to the driving seat 4 simultaneously, in the process, the first blocking plate 221 moves out of the lower branch pipe 22, and the second blocking plate 222 moves into the lower branch pipe 22.

Referring to fig. 4, the driving mechanism includes a driving motor 41, a driving shaft 411, a first driving member 412 and a second driving member 413, the driving motor 41 is selected as a dual-shaft motor, the driving shaft 411 is coaxially welded on an output shaft at the top of the driving motor 41 along the vertical direction, the first driving member 412 and the second driving member 413 are both installed on the driving shaft 411, the first driving member 412 is located above the second driving member 413, the first driving member 412 can drive the first plugging plate 221 to move out of the lower branch pipe 22, and the second driving member 413 can drive the second plugging plate 222 to move into the lower branch pipe 22.

Referring to fig. 4, the first driving member 412 includes a first wire reel 4121 and two first driving ropes 4122, the first wire reel 4121 is coaxially disposed on the driving shaft 411, the two first driving ropes 4122 are respectively connected to two opposite sides of the first wire reel 4121, and one end of the first driving rope 4122 far from the first wire reel 4121 is fixedly connected to the connecting plate on the first blocking plate 221. The second driving member 413 includes a second wire reel 4131 and two second driving ropes 4132, the second wire reel 4131 is coaxially welded on the driving shaft 411 and is located below the first wire reel 4121, the two second driving ropes 4132 are respectively connected to two opposite sides of the second wire reel 4131, and one end of the second driving rope 4132, which is far away from the second wire reel 4131, is fixedly connected to one end of the second blocking plate 222, which is located in the lower branch pipe 22.

When the driving motor 41 rotates forwards, the driving shaft 411 drives the first wire spool 4121 and the second wire spool 4131 to rotate simultaneously, the first wire spool 4121 winds the two first driving ropes 4122 simultaneously, the second wire spool 4131 winds the two second driving ropes 4132 simultaneously, the two first driving ropes 4122 pull the two first plugging plates 221 simultaneously, and the two first plugging plates 221 are moved out of the lower support pipe 22 simultaneously, so that materials can pass through; the two second driving ropes 4132 pull the two second plugging plates 222 at the same time, so that the second plugging plates 222 move towards the lower branch pipe 22, and the lower branch pipe 22 is plugged, thereby preventing the materials from directly falling from the lower branch pipe 22 and causing large impact force on the indoor coal conveying belt 3. When the driving motor 41 rotates reversely, the first driving rope 4122 wound on the first wire reel 4121 and the second driving rope 4132 wound on the second wire reel 4131 are simultaneously unwound, and the tension spring 2212 drives the first blocking plate 221 to move towards the lower branch pipe 22 through the first connecting plate 2211 under the action of the elasticity of the tension spring 2212, so that the lower branch pipe 22 is blocked, and the material is temporarily stored on the first blocking plate 221; the compression spring 2222 drives the second blocking plate 222 to move out of the lower branch pipe 22 through the second connecting plate 2221 under the action of the self-elasticity, so that the material accumulated on the second blocking plate 222 can fall out.

Referring to fig. 5 and 6, the overturning assembly 52 includes an overturning rope 521 and a driving block 522, a sliding groove is formed in one surface of the driving base 4, which is far away from the indoor coal conveying belt 3, along the height direction of the driving base, the driving block 522 is slidably mounted in the sliding groove along the length direction of the sliding groove, a lead screw 42 is coaxially connected to an output shaft at the bottom of the driving motor 41, the lead screw 42 is rotatably connected in the sliding groove, a threaded hole is formed in the driving block 522, the driving block 42 is sleeved with the threaded hole, one end of the overturning rope 521 is fixedly connected to the material receiving box 51, and the other end of the overturning rope 521 is fixedly connected to the driving block 522. The top of drive seat 4 is installed and is used for carrying out the guide block 43 that leads to upset rope 521, has seted up the guiding hole in the guide block 43, and upset rope 521 wears to establish in the guiding hole.

In the process that the driving motor 41 drives the screw rod 42 to rotate, the driving block 522 is driven by the screw rod 42 to move along the height direction of the sliding groove, so that the overturning rope 521 is pulled, the overturning rope 521 can be pulled under the guiding effect of the guide block 43, the material receiving box 51 is overturned, and materials temporarily stored in the material receiving box 51 are poured onto the indoor coal conveying belt 3. Connect work or material rest 5 and connect the setting of work or material rest 51, played further cushioning effect to the material, made the material can directly not fall into on indoor coal conveyor belt 3 to the impact force that indoor coal conveyor belt 3 received has been reduced, with improve equipment's life.

Referring to fig. 1 and 7, a dry fog dust suppression machine 6 is arranged between two indoor coal conveying belts 3, a dust suppression pipe 61 is installed at the top of the dry fog dust suppression machine 6, a shunt pipe 62 is installed at one end, far away from the dry fog dust suppression machine 6, of the dust suppression pipe 61, two ends of the shunt pipe 62 are connected with dust suppression covers 63, and the dust suppression covers 63 are covered above the indoor coal conveying belts 3. The dry fog dust suppression machine 6 can generate highly atomized water fog particles, the water fog particles are conveyed into the dust suppression cover 63 through the dust suppression pipe 61 and the flow dividing pipe 62, when materials in the material receiving box 51 are poured into the indoor coal conveying belt 3, the water fog particles can fully collide with the dust particles to be condensed, and therefore the situation that the dust generated when the materials are poured into the indoor coal conveying belt 3 is scattered into the air is avoided to a certain extent.

The implementation principle of the cleaning combination device of the thermoelectric coal conveying system in the embodiment of the application is as follows: under the condition of not being influenced by external force, the first blocking plate 221 is inserted into the lower branch pipe 22 under the elastic force of the tension spring 2212, the second blocking plate 222 is positioned outside the lower branch pipe 22 under the elastic force of the compression spring 2222, at the moment, the first blocking plate 221 blocks the lower branch pipe 22, so that the fallen materials are temporarily stored on the first blocking plate 221 after entering the lower branch pipe 22, in the process of driving the driving shaft 411 to rotate forward through the driving motor 41, the driving shaft 411 drives the first driving member 412 and the second driving member 413 to synchronously move, the first driving member 412 drives the first blocking plate 221 to move out of the lower branch pipe 22 in the moving process, the second driving member 413 drives the second blocking plate 222 to move into the lower branch pipe 22 in the moving process, and in the process, the materials on the first blocking plate 221 fall onto the second blocking plate 222 to be temporarily stored; start driving motor 41 and drive shaft 411 reversal, make first driving piece 412 and second driving piece 413 reverse motion, in this process first closure plate 221 immigrated into lower branch pipe 22 once more, second closure plate 222 shifts out outside lower branch pipe 22, the material of piling up on second closure plate 222 can be followed lower branch pipe 22 and fall out, the material that falls out is through buffering the back, speed reduces by a wide margin, thereby the impact to indoor coal conveyor belt 3 production when having reduced the material and falling out, the dust fall effect to in the workshop has been improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a clean composite set of thermoelectric coal conveying system, includes outdoor coal conveying belt (1), the below of outdoor coal conveying belt (1) exit end is provided with coal breakage pipe (2), coal breakage pipe (2) include upper branch pipe (21) and set up lower branch pipe (22) in upper branch pipe (21) bottom both sides, two the below of lower branch pipe (22) all is provided with indoor coal conveying belt (3), its characterized in that: a first plugging plate (221) and a second plugging plate (222) are arranged in the two lower branch pipes (22) in a sliding manner, the length directions of the first blocking plate (221) and the second blocking plate (222) are mutually vertical to the length direction of the lower support pipe (22), a driving seat (4) is arranged between the two indoor coal conveying belts (3), the top of the driving seat (4) is provided with a driving mechanism which comprises a driving motor (41), the top of the driving motor (41) is provided with a driving shaft (411) along the vertical direction, the output shaft of the driving motor (41) is coaxially connected with the driving shaft (411), a first driving piece (412) and a second driving piece (413) are arranged on the driving shaft (411), the first driving piece (412) is used for driving the first plugging plate (221) to move out of the lower branch pipe (22), the second driving member (413) is used for driving the second plugging plate (222) to move into the lower branch pipe (22).

2. The combined cleaning apparatus for a thermal electric coal conveying system according to claim 1, wherein: the first driving piece (412) comprises a first wire spool (4121) and two first driving ropes (4122), the first wire spool (4121) is coaxially arranged on the driving shaft (411), the two first driving ropes (4122) are respectively connected to two opposite sides of the first wire spool (4121), and one end, far away from the first wire spool (4121), of each first driving rope (4122) is fixedly connected with the first plugging plate (221).

3. The combined cleaning apparatus for a thermal electric coal conveying system according to claim 2, wherein: two first shutoff board (221) one-to-one sets up the one side that is close to each other in two lower branch pipes (22), the one end of first shutoff board (221) slides and sets up in lower branch pipe (22), and the other end is provided with first connecting plate (2211), be provided with extension spring (2212) between first connecting plate (2211) and lower branch pipe (22), first driving rope (4122) and first connecting plate (2211) fixed connection.

4. The combined cleaning apparatus for a thermal electric coal conveying system according to claim 1, wherein: the second driving piece (413) comprises a second wire spool (4131) and two second driving ropes (4132), the second wire spool (4131) is coaxially arranged on the driving shaft (411) and located below the first wire spool (4121), the two second driving ropes (4132) are respectively connected to two opposite sides of the second wire spool (4131), and one end, far away from the second wire spool (4131), of each second driving rope (4132) is fixedly connected with the second blocking plate (222).

5. The combined cleaning apparatus for a thermal electric coal conveying system according to claim 4, wherein: the two second plugging plates (222) are correspondingly arranged on the surfaces, far away from each other, of the two lower branch pipes (22) one by one, one end of each second plugging plate (222) is slidably arranged in each lower branch pipe (22), the other end of each second plugging plate is provided with a second connecting plate (2221), a pressure spring (2222) is arranged between each second connecting plate (2221) and each lower branch pipe (22), and the second driving rope (4132) penetrates through each lower branch pipe (22) and is fixedly connected with one end, located in each lower branch pipe (22), of each second plugging plate (222).

6. The combined cleaning apparatus for a thermal electric coal conveying system according to claim 1, wherein: one side of indoor coal conveyor belt (3) is provided with connects work or material rest (5), it connects workbin (51) to be provided with on work or material rest (5), connect workbin (51) to be located branch pipe (22) under, connect the articulated setting of one end that is close to indoor coal conveyor belt (3) of workbin (51) on connecing work or material rest (5), the one end that connects workbin (51) to keep away from indoor coal conveyor belt (3) is provided with and is used for the drive to connect upset subassembly (52) that workbin (51) overturned.

7. The combined cleaning apparatus for a thermal electric coal conveying system according to claim 6, wherein: upset subassembly (52) are including upset rope (521) and drive block (522), the spout has been seted up along self direction of height to one side that indoor coal conveyor belt (3) was kept away from in drive seat (4), the length direction slip setting of drive block (522) along the spout is in the spout, the one end fixed connection of upset rope (521) connects on workbin (51), other end fixed connection is on drive block (522).

8. The combined cleaning apparatus for a thermal electric coal conveying system according to claim 7, wherein: the driving motor (41) is a double-shaft motor, a lead screw (42) is arranged in the driving seat (4), two ends of the lead screw (42) are respectively rotatably arranged on two end walls of the sliding groove, an output shaft of one side, far away from the driving shaft (411), of the driving motor (41) is rotatably arranged in the driving seat (4) and is coaxially connected with the lead screw (42), and a threaded hole is formed in the driving block (522) and is sleeved on the lead screw (42).

9. The combined cleaning apparatus for a thermal electric coal conveying system according to claim 1, wherein: two be provided with dry fog between indoor coal conveyor belt (3) and suppress dirt machine (6), the top that dry fog suppressed dirt machine (6) is provided with presses down dirt pipe (61), it is provided with shunt tubes (62) to press down dirt pipe (61) one end of keeping away from dry fog and suppressing dirt machine (6), the both ends of shunt tubes (62) all are provided with and suppress dirt cover (63), it establishes the top in indoor coal conveyor belt (3) to suppress dirt cover (63) cover.

10. The combined cleaning apparatus for a thermal electric coal conveying system according to claim 1, wherein: the upper branch pipe (21) comprises a straight pipe (211) and inclined pipes (212) arranged on two sides of the bottom of the straight pipe (211), and a plurality of buffer plates (213) are distributed on two inner walls, opposite to the inclined pipes (212), along the length direction of the inner walls.