Efficient nitric oxide separator of nitric acid device

Abstract

The utility model discloses an efficient nitric oxide separator of a nitric acid device. The efficient nitric oxide separator comprises a box body, a bottom plate, a driving assembly and a spraying assembly, the two sides of the lower surface of the box body are each provided with a first inclined plate, the outer sides of the first inclined plates are high, the inner sides of the first inclined plates are low, the lower ends of the two first inclined plates are connected through a bottom plate, a porous partition plate is installed in the box body, the two sides of the box body are each provided with a nitric oxide inlet in a communicating mode, and the inner walls of the two sides of the box body are each detachably provided with a screen box. Compared with the prior art, the two fiber bed demisting plates are arranged up and down, so that the ends, facing the inner side of the box body, of the two movable fiber bed demisting plates can be overlapped to improve the separation effect of the separator, and the ends of the fiber bed demisting plates are used for separating process gas; and the other end of the box body is sprayed and cleaned through the fiber bed demisting plate of the spraying assembly, so that the separation efficiency of the separator can be improved while the stable pressure difference in the box body can be effectively ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of separation equipment for nitric acid devices, in particular to a high-efficiency nitrogen oxide separator for a nitric acid device. Background Art

[0002] The existing chemical industry accompanied by nitric acid medium still adopts traditional separation technology and process in production. The nitrogen oxide separation device used in the existing nitric acid medium production process still adopts a combination of a shell and a wire mesh foam capture unit. Due to its relatively simple structure, its function has corresponding limitations. Therefore, it is easy to be restricted by many factors (especially pressure difference) during use, which affects its separation efficiency. For example, it is easy to produce ammonium nitrate and ammonium nitrite crystals during use. The presence of crystals is easy to cause changes in the pressure difference in the separator, thereby affecting the separation efficiency and effect. In addition, when the ammonium nitrate and ammonium nitrite crystals are sprayed and cleaned, it is not convenient to continue to separate the process gas, which will further reduce the separation efficiency of the separator. For this reason, we propose a high-efficiency nitrogen oxide separator for a nitric acid device. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a high-efficiency nitrogen oxide separator for a nitric acid device. Two fiber bed defogger plates are arranged up and down so that the two movable fiber bed defogger plates are overlapped and stacked at one end facing the inner side of the box body to improve the separation effect of the separator. One end of the fiber bed defogger plate separates the process gas, and the other end is sprayed and cleaned by the fiber bed defogger plate of the spray assembly. Therefore, while effectively ensuring the stability of the pressure difference in the box body, the separation efficiency of the separator can be improved, which can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-efficiency nitrogen oxide separator for a nitric acid device, comprising a box body, a bottom plate, a driving assembly and a spray assembly;

[0005] First inclined plates are installed on both sides of the lower surface of the box, the first inclined plates are higher on the outside and lower on the inside, and the lower ends of the two first inclined plates are connected by a bottom plate. A porous partition is installed inside the box, and nitrogen oxide inlets are installed on both sides of the box. Screen boxes are removably installed on the inner walls of both sides of the box, and blade demisters and wire mesh demisters are installed on both sides of the upper surface of the porous partition. The nitrogen oxide inlets, screen boxes, blade demisters and wire mesh demisters correspond to each other horizontally. A plurality of dilute nitric acid inlets are evenly arranged on the lower right side of the box, a dilute nitric acid outlet is provided on the bottom plate, and a nitrogen oxide outlet is provided on the upper surface of the box. A screen plate is installed above the interior of the box, and a cavity is provided inside the screen plate. A first through slot and a second through slot are provided on the front side of the box, and the height of the first through slot is greater than that of the second through slot. The two ends of the two-way screw are respectively provided with a first connecting member and a second connecting member, and the second connecting member is connected with a second connecting member in a direction of rotation and a rotation of the two connecting members is performed on the two ends of the two-way screw.

[0006] Furthermore, the driving assembly includes a motor bracket installed outside a straight bracket, a second motor is installed on the motor bracket, an output shaft of the second motor is connected to one end of the bidirectional lead screw through a first coupling, and an input end of the second motor is electrically connected to an output end of an external controller. The second motor is controlled to work by the external controller, and the second motor drives the bidirectional lead screw to rotate, thereby completing the rotation of the bidirectional lead screw by electric power.

[0007] Furthermore, the spray assembly includes a belt and two rotating shafts, which are rotatably installed on the left and right sides of the upper surface of the sieve plate respectively, a water collecting box is installed on the outer surface of the rotating shaft, and a plurality of spray heads are evenly installed on the lower surface of the water collecting box, a first pulley is installed on the left rotating shaft, and a second pulley is installed on the right rotating shaft, the first pulley and the second pulley are connected by belt transmission, through holes are opened on the left and right sides of the outer surface of the box body, an elastic hose is installed on the water collecting box, the elastic hose is inserted into the through hole, and the upper surface of the box body is provided with a belt. A water tank is installed, and water pumps are installed at the water outlets on both sides of the water tank, the upper end of the elastic hose and the water pump, a motor slot is opened on the left side of the box body, a first motor is arranged in the motor slot, and the output shaft of the first motor is connected to the lower end of the rotating shaft on the left side through a second coupling, mounting plates are installed on both sides of the interior of the box body, a second inclined plate is installed on the inner end of the mounting plate, the inner side of the second inclined plate is high and the outer side is low, a plurality of drainage ports are evenly arranged on both sides of the outer surface of the box body, and the input end of the first motor is electrically connected to the output end of the external controller. The water in the water tank is sent into the water collecting box through the elastic hose by a water pump, and then the water in the water collecting box is sprayed to the end of the fiber bed defogger plate facing the outside of the box through a nozzle, so as to spray and rinse the fiber bed defogger plate to further ensure the stability of the pressure difference in the box. The first motor is controlled by an external controller to drive the left shaft to rotate, and the rotation of the left shaft drives the first pulley to rotate. The rotation of the first pulley drives the second pulley to rotate under the action of the belt, and the rotation of the second pulley drives the right shaft to rotate, so that the rotation of the shaft drives the respective connected water collecting boxes to rotate, so that the water collecting boxes rotate back and forth continuously to increase the spraying range of the nozzle, and the second inclined plate and the mounting plate play a diversion role to discharge the used liquid through the drain outlet.

[0008] Compared with the prior art, the beneficial effects of the utility model are as follows: the efficient nitrogen oxide separator of the nitric acid device passes the process gas into the box body from the nitrogen oxide inlets on both sides of the box body, and the process gas is initially separated by passing through the sieve box, the blade demister and the wire mesh, wherein the sieve box can be disassembled and cleaned, and the nitric acid droplets entrained in the process gas and the ammonium nitrate and ammonium nitrite crystalline solid particles produced by the chemical reaction are separated, and a secondary air inlet is provided on the rear side of the box body, and then the process gas that has undergone initial separation is combined with the secondary air entering the box body and then passes through the sieve plate and the fiber bed demister plate for secondary separation, and the nitric oxide gas, relatively small droplets and the ammonium nitrate and ammonium nitrite crystalline particles produced by the chemical reaction are separated, thereby effectively reducing the pressure difference of the box body, and at the same time, the fiber bed demister plate is sprayed and cleaned by the spray assembly to dissolve the ammonium nitrate and ammonium nitrite crystals produced on the sieve plate and the fiber bed demister plate, so as to further reduce the pressure difference in the box body. The pressure difference prolongs the service life of the fiber bed defogger plate, wherein the driving component drives the bidirectional screw to rotate, and the rotation of the bidirectional screw drives the two moving blocks to move relative to or opposite to each other, and the movement of the two moving blocks drives the fiber bed defogger plates connected to them to move. Since the two fiber bed defogger plates are arranged up and down, the two fiber bed defogger plates are overlapped and stacked at one end facing the inner side of the box body to improve the separation effect of the separator, so that one end of the fiber bed defogger plate separates the process gas, and the other end is sprayed and cleaned by the fiber bed defogger plate of the spray assembly, thereby effectively ensuring the stability of the pressure difference in the box body and improving the separation efficiency of the separator; the dilute nitric acid inlet can allow the dilute nitric acid collected from the system to enter the bottom of the nitrogen oxide separator, and the washed and absorbed dilute nitric acid is discharged from the dilute nitric acid outlet of the separator into the absorption tower, and the process gas after high-efficiency filtration enters the nitrogen oxide compressor from the nitrogen oxide outlet above the box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the structure of the utility model;

[0010] Figure 2 This is a schematic diagram of the first cross-sectional structure of the utility model;

[0011] Figure 3 This is a schematic diagram of the second cross-sectional structure of the utility model.

[0012] In the figure: 1 box body, 2 first motor, 3 motor slot, 4 nitrogen oxide inlet, 5 drain, 6 bidirectional screw, 7 dilute nitric acid outlet, 8 bottom plate, 9 legs, 10 first inclined plate, 11 elastic water pipe, 12 water pump, 13 nitrogen oxide outlet, 14 water tank, 15 screen plate, 16 connecting rod, 17 second through slot, 18 motor bracket, 19 second motor, 20 water collecting box, 21 moving block, 22 mounting plate, 23 porous partition, 24 limit plate, 25 first through slot, 26 belt, 27 first pulley, 28 fiber bed demister plate, 29 nozzle, 30 dilute nitric acid inlet, 31 second inclined plate, 32 wire mesh demister, 33 blade demister, 34 screen box. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] See also Figure 1-3 , This embodiment provides a technical solution: a high-efficiency nitrogen oxide separator for a nitric acid device, comprising a housing 1, a bottom plate 8, a drive assembly and a spray assembly;

[0015] First inclined plates 10 are installed on both sides of the lower surface of the box body 1. The outer side of the first inclined plates 10 is high and the inner side is low. The lower ends of the two first inclined plates 10 are connected by a bottom plate 8. A porous partition plate 23 is installed inside the box body 1. Both sides of the box body 1 are connected and installed with nitrogen oxide inlets 4. Screen boxes 34 are detachably installed on the inner walls of both sides of the box body 1. Blade demisters 33 and wire mesh demisters 32 are installed on both sides of the upper surface of the porous partition plate 23. The nitrogen oxide inlet 4, the screen box 34, the blade demister 33 and the wire mesh demister 32 correspond to each other horizontally. A plurality of dilute nitric acid inlets 30 are evenly arranged and installed on the lower right side of the box body 1. A dilute nitric acid outlet 7 is provided on the bottom plate 8. A nitrogen oxide outlet 13 is provided on the upper surface of the box body 1. A sieve plate 15 is installed above the interior of the box body 1. A cavity is provided inside the sieve plate 15. A first through slot 25 and a second through slot 17 are provided on the front side of the box body 1. The height of the first through slot 25 is greater than that of the second through slot 17. Limiting grooves are provided on both sides of the inner part of the two through grooves 17, and limiting plates 24 are slidably installed in the limiting grooves. A connecting rod 16 is installed on the limiting plate 24, and a fiber bed defogger plate 28 is installed on the inner end of the connecting rod 16. The two fiber bed defogger plates 28 are arranged up and down and are both located in the cavity of the fiber bed defogger plates 28. Two straight brackets are installed on the front side of the box body 1, and a two-way screw 6 is installed on the two straight brackets for rotation together. The thread directions of the two ends of the two-way screw 6 are opposite, and moving blocks 21 are threadedly installed on both ends of the two-way screw 6. A first connecting bracket is installed on the moving block 21 on the left, and the upper end of the first connecting bracket is connected to the connecting rod 16 located in the first through groove 25. A second connecting bracket is installed on the moving block 21 on the right, and the upper end of the second connecting bracket is connected to the connecting rod 16 located in the second through groove 17. A driving assembly is installed on the outer side of a straight bracket, and the driving assembly is connected to one end of the two-way screw 6. A spray assembly is provided on the upper part of the interior of the box body 1.

[0016] First, the process gas is introduced into the box 1 through the nitrogen oxide inlet 4 on both sides of the box 1, and the process gas is initially separated by passing through the sieve box 34, the blade demister 33 and the wire mesh, wherein the sieve box 34 can be disassembled and cleaned to separate the nitric acid droplets entrained in the process gas and the ammonium nitrate and ammonium nitrite crystalline solid particles produced by the chemical reaction. A secondary air inlet is provided on the rear side of the box 1, and then the process gas that has undergone initial separation is merged with the secondary air entering the box 1 and then passed through the sieve plate 15 and the fiber bed demister plate 28 for secondary separation to separate the nitric oxide gas, relatively small droplets and the ammonium nitrate and ammonium nitrite crystalline particles produced by the chemical reaction, thereby effectively reducing the pressure difference of the box 1. At the same time, the fiber bed demister plate 28 is sprayed and cleaned by the spray assembly to dissolve the ammonium nitrate and ammonium nitrite crystals produced on the sieve plate 15 and the fiber bed demister plate 28, so as to further reduce the pressure difference in the box 1 and extend the service life of the fiber bed demister plate 28. The two-way screw 6 is driven to rotate by the driving component, and the rotation of the two-way screw 6 drives the two moving blocks 21 to move relative to or opposite to each other. The movement of the two moving blocks 21 drives the fiber bed defogger plates 28 connected to them to move. Since the two fiber bed defogger plates 28 are arranged up and down, the two ends of the two fiber bed defogger plates 28 facing the inner side of the box body 1 will overlap and stack to improve the separation effect of the separator, so that one end of the fiber bed defogger plate 28 separates the process gas, and the other end is sprayed and cleaned by the fiber bed defogger plate 28 of the spray assembly, thereby effectively ensuring the stability of the pressure difference in the box body 1 while also improving the separation efficiency of the separator; the dilute nitric acid inlet 30 can allow the dilute nitric acid collected from the system to enter the bottom of the nitrogen oxide separator, and the washed and absorbed dilute nitric acid is discharged from the dilute nitric acid outlet 7 of the separator into the absorption tower, and the process gas after high-efficiency filtration enters the nitrogen oxide compressor from the nitrogen oxide outlet 13 above the box body 1.

[0017] The driving assembly includes a motor bracket 18 installed outside a straight bracket, a second motor 19 is installed on the motor bracket 18, the output shaft of the second motor 19 is connected to one end of the bidirectional lead screw 6 through a first coupling, and the input end of the second motor 19 is electrically connected to the output end of the external controller. The second motor 19 is controlled to work by the external controller, and the second motor 19 drives the bidirectional lead screw 6 to rotate, thereby completing the rotation of the bidirectional lead screw 6 by electric power.

[0018] The spray assembly includes a belt 26 and two rotating shafts, which are rotatably mounted on the left and right sides of the upper surface of the sieve plate 15, respectively. A water collecting box 20 is mounted on the outer surface of the rotating shaft, and a plurality of nozzles 29 are evenly mounted on the lower surface of the water collecting box 20. A first pulley 27 is mounted on the left rotating shaft, and a second pulley is mounted on the right rotating shaft. The first pulley 27 and the second pulley are connected through the belt 26 transmission. Through holes are opened on the left and right sides of the outer surface of the box body 1. An elastic hose 11 is connected and mounted on the water collecting box 20. The elastic hose 11 is inserted into the through hole. The upper surface of the box body 1 is mounted with A water tank 14, water pumps 12 are installed at the water outlets on both sides of the water tank 14, the upper end of the elastic hose 11 and the water pump 12, a motor slot 3 is opened on the left side of the box body 1, a first motor 2 is arranged in the motor slot 3, the output shaft of the first motor 2 is connected to the lower end of the rotating shaft on the left side through a second coupling, mounting plates 22 are installed on both sides of the interior of the box body 1, a second inclined plate 31 is installed on the inner end of the mounting plate 22, the inner side of the second inclined plate 31 is high and the outer side is low, a plurality of evenly arranged drainage ports 5 are opened on both sides of the outer surface of the box body 1, and the input end of the first motor 2 is electrically connected to the output end of the external controller. The water in the water tank 14 is sent into the water collecting box 20 through the elastic hose 11 by the water pump 12, and then the water in the water collecting box 20 is sprayed to the end of the fiber bed defogger 28 facing the outside of the box body 1 through the nozzle 29, and the fiber bed defogger 28 is sprayed and rinsed to further ensure the stability of the pressure difference in the box body 1. The first motor 2 is controlled to work by the external controller. The first motor 2 drives the left shaft to rotate. The rotation of the left shaft drives the first pulley 27 to rotate. The rotation of the first pulley 27 drives the second pulley to rotate under the action of the belt 26. The rotation of the second pulley drives the right shaft to rotate, so that the rotation of the shaft drives the respective connected water collecting boxes 20 to rotate, so that the water collecting boxes 20 rotate back and forth continuously to increase the spraying range of the nozzle 29. The second inclined plate 31 and the mounting plate 22 play a diversion role to discharge the used liquid through the drain port 5.

[0019] The working principle of a high-efficiency nitrogen oxide separator for a nitric acid device provided by the utility model is as follows: first, the process gas is introduced into the box 1 through the nitrogen oxide inlets 4 on both sides of the box 1, and the process gas is initially separated by passing through the sieve box 34, the blade demister 33 and the wire mesh, wherein the sieve box 34 can be disassembled and cleaned, and the nitric acid droplets entrained in the process gas and the ammonium nitrate and ammonium nitrite crystalline solid particles produced by the chemical reaction are separated. A secondary air inlet is provided on the rear side of the box 1, and then the process gas that has undergone initial separation is merged with the secondary air entering the box 1 and then passed through the sieve plate 15 and the fiber bed demister plate 28 for secondary separation, and the nitric oxide gas, relatively small droplets and the ammonium nitrate and ammonium nitrite crystalline particles produced by the chemical reaction are separated, thereby effectively reducing the pressure difference of the box 1, and at the same time, the fiber bed demister plate 28 is sprayed and cleaned by the spray assembly to dissolve the ammonium nitrate and ammonium nitrite crystals produced on the sieve plate 15 and the fiber bed demister plate 28, so as to further reduce the pressure difference in the box 1. , extending the service life of the fiber bed defogger plate 28, wherein the bidirectional screw 6 is driven to rotate by the driving component, and the rotation of the bidirectional screw 6 drives the two moving blocks 21 to move relative to or opposite to each other, and the movement of the two moving blocks 21 drives the fiber bed defogger plates 28 connected to each other to move. Since the two fiber bed defogger plates 28 are arranged up and down, the two fiber bed defogger plates 28 are overlapped and stacked at one end facing the inner side of the box body 1 to improve the separation effect of the separator, so that one end of the fiber bed defogger plate 28 separates the process gas, and the other end is sprayed and cleaned by the fiber bed defogger plate 28 of the spray assembly, thereby effectively ensuring the stability of the pressure difference in the box body 1 while also improving the separation efficiency of the separator; the dilute nitric acid inlet 30 can allow the dilute nitric acid collected from the system to enter the bottom of the nitrogen oxide separator, and the washed and absorbed dilute nitric acid is discharged from the dilute nitric acid outlet 7 of the separator into the absorption tower, and the process gas after high-efficiency filtration enters the nitrogen oxide compressor from the nitrogen oxide outlet 13 above the box body 1. The second motor 19 is controlled by an external controller to drive the bidirectional lead screw 6 to rotate, thereby completing the rotation of the bidirectional lead screw 6 by electric power. The water in the water tank 14 is sent into the water collecting box 20 through the elastic hose 11 by the water pump 12, and then the water in the water collecting box 20 is sprayed to the end of the fiber bed demister plate 28 facing the outside of the box body 1 through the nozzle 29, and the fiber bed demister plate 28 is sprayed and rinsed to further ensure the pressure difference in the box body 1 Stable, the first motor 2 is controlled by an external controller to drive the left rotating shaft to rotate, the left rotating shaft rotation drives the first pulley 27 to rotate, the first pulley 27 rotates under the action of the belt 26 to drive the second pulley to rotate, and the second pulley rotates to drive the right rotating shaft to rotate, so that the rotating shaft rotation drives the respective connected water collecting boxes 20 to rotate, so that the water collecting boxes 20 rotate back and forth continuously to increase the spraying range of the nozzle 29, and the second inclined plate 31 and the mounting plate 22 play a diversion role to discharge the used liquid through the drain port 5.

[0020] It is worth noting that in this embodiment, the core chip of the external controller is an STC single-chip microcomputer, specifically, the model is STC15W204S, and the first motor 2 and the second motor 19 can be freely configured according to the actual application scenario. The first motor 2 and the second motor 19 can be selected from the JE series single-phase servo motors produced by Beijing Mitsubishi Electric (China) Co., Ltd. The external controller controls the operation of the first motor 2 and the second motor 19 using methods commonly used in the prior art.

[0021] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A highly efficient nitrogen oxide separator for a nitric acid plant, characterized in that: It comprises a box body (1), a bottom plate (8), a drive assembly and a spray assembly; First inclined plates (10) are installed on both sides of the lower surface of the box body (1), the first inclined plates (10) are higher on the outside and lower on the inside, and the lower ends of the two first inclined plates (10) are connected by a bottom plate (8). A porous partition plate (23) is installed inside the box body (1), and both sides of the box body (1) are connected and installed with a nitrogen oxide inlet (4). Screen boxes (34) are detachably installed on the inner walls of both sides of the box body (1), and blade demisters (33) and wire mesh demisters (32) are installed on both sides of the upper surface of the porous partition plate (23). The nitrogen oxide inlet (4), the screen box (34) and the screen box (34) are connected to each other. 4), the blade demister (33) and the wire mesh demister (32) are horizontally corresponding to each other, a plurality of dilute nitric acid inlets (30) are evenly arranged at the lower right side of the box body (1), a dilute nitric acid outlet (7) is provided on the bottom plate (8), a nitrogen oxide outlet (13) is provided on the upper surface of the box body (1), a sieve plate (15) is installed above the interior of the box body (1), a cavity is provided inside the sieve plate (15), a first through groove (25) and a second through groove (17) are provided on the front side of the box body (1), the height of the first through groove (25) is greater than the height of the second through groove (17) ), both sides of the first through slot (25) and the second through slot (17) are provided with limit slots, limit plates (24) are slidably mounted in the limit slots, a connecting rod (16) is mounted on the limit plate (24), a fiber bed defogger (28) is mounted on the inner end of the connecting rod (16), two fiber bed defoggers (28) are arranged up and down and are both located in the cavity of the fiber bed defogger (28), two straight brackets are mounted on the front side of the box body (1), a bidirectional lead screw (6) is rotatably mounted on the two straight brackets, and the threaded squares at both ends of the bidirectional lead screw (6) are In the opposite direction, both ends of the bidirectional lead screw (6) are threadedly mounted with moving blocks (21), a first connecting bracket is mounted on the moving block (21) on the left side, the upper end of the first connecting bracket is connected to a connecting rod (16) located in a first through groove (25), a second connecting bracket is mounted on the moving block (21) on the right side, the upper end of the second connecting bracket is connected to a connecting rod (16) located in a second through groove (17), a driving assembly is mounted on the outer side of a straight bracket, the driving assembly is connected to one end of the bidirectional lead screw (6), and a spray assembly is provided on the upper part of the interior of the box body (1).

2. A high-efficiency nitrogen oxide separator for a nitric acid plant according to claim 1, characterized in that: The drive assembly comprises a motor bracket (18) mounted on the outside of a straight bracket, a second motor (19) being mounted on the motor bracket (18), an output shaft of the second motor (19) being connected to one end of a bidirectional lead screw (6) via a first coupling, and an input end of the second motor (19) being electrically connected to an output end of an external controller.

3. The high-efficiency nitrogen oxide separator for a nitric acid device according to claim 1, characterized in that: The spray assembly comprises a belt (26) and two rotating shafts, the two rotating shafts being rotatably mounted on the left and right sides of the upper surface of the sieve plate (15), the outer surface of the rotating shaft being mounted with a water collecting box (20), the lower surface of the water collecting box (20) being evenly mounted with a plurality of spray heads (29), the left rotating shaft being mounted with a first pulley (27), the right rotating shaft being mounted with a second pulley, the first pulley (27) and the second pulley being connected by a belt (26) transmission, the left and right sides of the outer surface of the box body (1) being provided with through holes, the water collecting box (20) being connected with an elastic hose (11), the elastic hose (11) being passed through the through holes, the upper surface of the box body (1) being mounted with a water tank (14), Water pumps (12) are installed at the water outlets on both sides of the water tank (14), the upper end of the elastic hose (11) and the water pump (12), a motor slot (3) is opened on the left side of the box body (1), a first motor (2) is arranged in the motor slot (3), the output shaft of the first motor (2) is connected to the lower end of the left rotating shaft through a second coupling, mounting plates (22) are installed on both sides of the interior of the box body (1), a second inclined plate (31) is installed at the inner end of the mounting plate (22), the inner side of the second inclined plate (31) is higher and the outer side is lower, a plurality of evenly arranged drainage ports (5) are opened on both sides of the outer surface of the box body (1), and the input end of the first motor (2) is electrically connected to the output end of an external controller.

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