CN211520806U - Grit conveyer belt cleaning device - Google Patents

Abstract

The utility model discloses a grit conveyer belt cleaning device relates to concrete preparation equipment technical field. The technical key points are as follows: the sand collecting device comprises a conveying belt which is obliquely arranged, a collecting box is arranged below the conveying belt, the top of the collecting box is parallel to the bottom surface of the conveying belt, an opening is formed in the top of the collecting box, a water collecting tank is arranged on one side, close to the higher side of the conveying belt, of the collecting box, a water collecting port is formed in the joint of the water collecting tank and the collecting box, a solid-liquid separation device is arranged at the water collecting port, a sand collecting plate is horizontally hinged to the lower side of the solid-liquid separation device, a sand cleaning device is arranged on the upper portion of the sand collecting plate, above the conveying belt, of the sand collecting plate, a spraying device which is right opposite to the conveying belt is arranged above the water collecting tank, a sand outlet is formed in; it has the advantage that conveniently clear up the conveyer belt, and be convenient for sand and separation of water make its reuse.

Description

Grit conveyer belt cleaning device

Technical Field

The utility model relates to a conveyer belt technical field, more specifically say, it relates to a grit conveyer belt cleaning device.

Background

Because of its good hardness and stable chemical properties, sandstone is often used as a high-quality building material and concrete raw material, and is widely applied to the fields of houses, roads, highways, railways, engineering and the like, and is a building material with the widest application and the largest use amount. Need transport the grit to concrete mixing device through the conveyer belt and stir usually in the preparation process of concrete, the grit that the stirring adopted is mostly river sand, often can have partial moisture in the river sand, and moist grit can adhere on the conveyer belt at the transportation in-process usually, and partial grit can drop under the effect of gravity after the moisture evaporation on the grit, and the grit has been wasted in long-time dropping for the cost of mill increases.

Chinese utility model patent that bulletin number is CN207726232U discloses a grit conveyer belt clearance system, it includes conveyer belt, support body and installs the collecting vat on the support body, the collecting vat sets up in the conveyer belt below, and collecting vat length is the same with the transport length of conveyer belt, and the collecting vat slope sets up, and collecting vat lower end tip intercommunication has recovery unit, be provided with the sand cleaning device who is used for scrubbing the conveyer belt on the support body. Conveyer belt when the transportation, the grit of adhesion on the conveyer belt is scraped to the collecting vat in by the sand cleaning device who sets up on the support body, and the grit slides along the collecting vat inner wall under the effect of gravity, finally falls to recovery unit, transports the grit in the recovery unit again to the conveyer belt by operating personnel again on, carries out recycle.

The above prior art solution has the following drawbacks: the sand and stones cleaned by the system are inconvenient to clean, and the cleaned sand and water are inconvenient to separate and reuse.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a grit conveyer belt cleaning device, it has the convenience and clears up the conveyer belt, and the sand of being convenient for and separation of water make its advantage of reuse.

The above object of the present invention can be achieved by the following technical solutions:

a sand conveying belt cleaning device comprises a conveying belt which is obliquely arranged, a collecting box is arranged below the conveying belt, the top of the collecting box is parallel to the bottom surface of the conveyor belt, the top of the collecting box is provided with an opening, the collecting box is provided with a water collecting box at the higher side close to the conveyor belt, a water collecting opening is arranged at the joint of the water collecting tank and the collecting tank, a solid-liquid separation device is arranged at the water collecting opening, a sand collecting plate is horizontally hinged below the solid-liquid separation device, a sand cleaning device is arranged above the sand collecting plate and on the lower belt surface of the conveyor belt, a spraying device which is over against the conveyor belt is arranged above the water collecting tank, a sand outlet is arranged on the side wall of the collecting tank which is close to the lower side of the conveyor belt, the end part of the sand collecting plate extends out of the sand outlet, the two side edges of the sand collecting plate are abutted against the side wall of the collecting box, and a driving device for driving the sand collecting plate to move up and down is arranged at the sand outlet.

By adopting the technical scheme, the collecting box is arranged below the conveying belt, so that sand applied on the conveying belt can be conveniently collected, the water collecting box is arranged on the side, close to the higher side of the conveying belt, of the collecting box, and the joint of the water collecting box and the collecting box is provided with the water collecting port, so that water used for cleaning the sand can be conveniently collected; a solid-liquid separation device is arranged at the water collection port and used for separating sand and water collected by the collection box, and a sand collection plate is horizontally hinged below the solid-liquid separation device and used for collecting a mixture obtained by cleaning; a sand cleaning device is arranged above the sand collecting plate and on the lower belt surface of the conveying belt and used for cleaning sand on the conveying belt; a spraying device which is right opposite to the conveying belt is arranged above the water collecting tank and is used for spraying water on the conveying belt, so that the sand cleaning device can clean sand on the conveying belt conveniently; a sand outlet is formed in the side wall of the collecting box, close to the lower side of the conveyor belt, a driving device for driving the sand collecting plate to move up and down is arranged at the sand outlet, and when too much sand is on the sand collecting plate, the driving device drives the sand collecting plate to incline towards one side of the sand outlet, so that the sand cleaning efficiency on the sand collecting plate is improved; therefore, the utility model has the advantages of conveniently clear up the conveyer belt, and be convenient for sand and separation of water make its recycle once more to practice thrift the cost and reduce water wasting of resources.

The utility model discloses further set up to: the solid-liquid separation device comprises a U-shaped groove which is arranged at the position of the water collecting opening and is opposite to the upper and lower notches, a porous filter plate is inserted in the U-shaped groove, and a filter plate socket which is arranged on one side of the collecting box and penetrates through the side wall of the U-shaped groove is arranged.

Through adopting above-mentioned technical scheme, it has the filter to peg graft in the U type inslot that catchment mouth department set up, conveniently filters the separation to sand and water, sets up the filter plate socket in collecting box one side, can insert or take out the filter directly from the filter plate socket, makes its filter be convenient for change.

The utility model discloses further set up to: the sand removal device comprises a horizontal rolling brush which is horizontally arranged at the top of the collection box and abutted against the bottom surface of the conveying belt, wherein the length of the rolling brush is not less than the width of the conveying belt, the length direction of the rolling brush is perpendicular to the moving direction of the conveying belt, the rolling brush is close to the higher side of the conveying belt and is provided with a vertical sand scraping plate in parallel with the higher side of the conveying belt, the upper end of the sand scraping plate is abutted against the bottom surface of the conveying belt, the length of the sand scraping plate is not less than the width of the conveying belt, and the rolling brush is positioned over the sand collecting plate.

Through adopting above-mentioned technical scheme, set up the round brush of bottom surface butt under with the conveyer belt and the scraping plate parallel with the round brush directly over the collection sand board, when adnexed sand transports scraping plate department on the conveyer belt, the scraping plate scrapes a large amount of sand down to the collection sand board, then brushes the conveyer belt to the round brush department again, and the length of round brush and scraping plate is not less than the width of conveyer belt, makes its clearance more abundant.

The utility model discloses further set up to: spray set is including locating the collecting box is close to in the shower nozzle at the higher one side top of conveyer belt, the shower nozzle orientation the conveyer belt, bottom in the header tank is equipped with the suction pump, the suction pump pass through the pipeline with the shower nozzle intercommunication.

Through adopting above-mentioned technical scheme, set up the shower nozzle towards the conveyer belt, the sand removal device of being convenient for water spray on for the conveyer belt clears up the conveyer belt, and the bottom in the header tank sets up the suction pump and is connected through pipeline and shower nozzle and supply water for the shower nozzle, makes its water reuse who collects back.

The utility model discloses further set up to: the driving device comprises a connecting shaft horizontally arranged at the bottom of the sand outlet, a hydraulic cylinder is rotatably connected onto the connecting shaft, and the end part of an output shaft of the hydraulic cylinder is hinged with the end part of the sand collecting plate far away from the hinged edge.

By adopting the technical scheme, the connecting shaft is horizontally arranged at the bottom of the sand outlet, the connecting rod is rotatably connected with the hydraulic cylinder, the end part of the output shaft is hinged with the end part of the sand collecting plate far away from the hinged edge, and the sand collecting plate can be driven to move up and down by the hydraulic cylinder; when the sand-collecting plate is cleaned, the sand-collecting plate is driven to incline towards one side close to the solid-liquid separation device, so that water on the sand-collecting plate can flow towards the solid-liquid separation device conveniently for separation; when the sand on the sand collecting plate is too much, the driving device drives the sand collecting plate to incline towards one side of the sand outlet, and the cleaning efficiency of the sand on the sand collecting plate is improved.

The utility model discloses further set up to: the two sides of the end part of the sand collecting plate are respectively and fixedly connected with a screw rod horizontally, an arc-shaped stroke groove is formed in the position, corresponding to the side wall of the collecting box, of the screw rod, the screw rod extends out of the stroke groove, and a butterfly nut is arranged at the end part of the screw rod.

Through adopting above-mentioned technical scheme, sand collecting plate both sides fixedly connected with screw rod is worn out and the tip is equipped with the butterfly nut from the stroke groove of collecting box lateral wall, and when wasing, when sand collecting plate inclines to being close to solid-liquid separation equipment one side, the butterfly nut can play auxiliary stay and limiting displacement to sand collecting plate tip both sides with screw rod cooperation is screwed up.

The utility model discloses further set up to: the collecting box is perpendicular to the two side walls of the rolling brush extend upwards to form a baffle, the upper end of the baffle is higher than the lower bottom surface of the conveyor belt, an elastic pressing sheet is horizontally arranged on the side wall of the collecting box above the hinged edge of the sand collecting plate, and the bottom surface of the elastic pressing sheet is tightly pressed with the sand collecting plate.

Through adopting above-mentioned technical scheme, set up the baffle that is higher than bottom surface under the conveyer belt at the collecting box top, when clearing up, when spray set sprayed water to the conveyer belt, prevent that the water droplet from splashing conveyer belt both sides influence the construction and waste water resource, set up elasticity preforming and sand collecting plate at the collecting box lateral wall and compress tightly mutually, prevent that the water of collecting from flowing from articulated department.

The utility model discloses further set up to: the water collecting tank is internally provided with a filter screen horizontally below the water collecting port, the bottom of the water collecting tank is provided with a water outlet and a matched sealing cover, and the top of the water collecting tank is provided with a cleaning port and a matched tank cover.

Through adopting above-mentioned technical scheme, set up the filter screen in the collecting box and can carry out secondary filter to the water of collecting, prevent that the suction pump from blockking up, set up delivery port and assorted sealed lid in the header tank below, conveniently clear up the water in the header tank, be equipped with clearance mouth and assorted case lid at the header tank top, conveniently clear up and maintain header tank inside.

To sum up, the utility model discloses a beneficial technological effect does:

(1) the sand collecting plate is arranged below the water collecting port by arranging the collecting box and the water collecting tank below the conveying belt and the sand cleaning device on the collecting box and the solid-liquid separation device and the spraying device arranged at the water collecting port, so that sand attached to the conveying belt is cleaned to the sand collecting plate by the cleaning device after being sprayed by the spraying device, and the water and the sand are separated by the solid-liquid separation device, so that the conveying belt is conveniently cleaned, and the sand and the water are conveniently separated to be reused;

(2) the sand collecting plate is driven to move up and down by the driving device, so that the sand collecting plate can incline to one side of the sand outlet, the cleaning efficiency of sand on the sand collecting plate is improved, the screws arranged on two sides of the sand collecting plate penetrate out of the travel grooves on the side wall of the collecting box, and butterfly nuts are arranged at the end parts of the screws;

(3) the baffle plate at the top of the collecting box is arranged to prevent water drops from splashing, and the elastic pressing sheet tightly pressed with the sand collecting plate is arranged on the side wall of the collecting box to prevent water from flowing out of the hinged position of the sand collecting plate and facilitate collection; set up delivery port and sealed lid bottom the header tank, set up clearance mouth and case lid at the top, conveniently clear up and maintain header tank inside.

Drawings

FIG. 1 is a schematic view of a sand conveyor belt cleaning apparatus;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is a partially enlarged schematic view of a portion B in fig. 2.

Reference numerals: 1. a conveyor belt; 2. a collection box; 3. an opening; 4. a water collection tank; 5. a water collection port; 6. a solid-liquid separation device; 7. a sand collection plate; 8. a sand removal device; 9. a spraying device; 10. a sand outlet; 11. a drive device; 12. a screw; 13. a stroke slot; 14. a butterfly nut; 15. a baffle plate; 16. filtering with a screen; 17. a water outlet; 18. a sealing cover; 19. cleaning the opening; 20. a box cover; 21. elastic tabletting; 61. a U-shaped groove; 62. a filter plate; 63. a filter plate socket; 81. rolling and brushing; 82. a sand scraping plate; 91. a spray head; 92. a water pump; 111. a connecting shaft; 112. and a hydraulic cylinder.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, a sand and stone conveyor belt cleaning device disclosed by the utility model comprises a conveyor belt 1 which is obliquely installed, a rectangular collecting box 2 is installed below the conveyor belt 1, the top of the collecting box 2 is parallel to the bottom surface of the conveyor belt 1, the top of the collecting box 2 is provided with an opening 3, the collecting box 2 is integrally connected with a rectangular water collecting box 4 close to the higher side of the conveyor belt 1, a rectangular water collecting port 5 is arranged at the joint of the water collecting box 4 and the collecting box 2, a solid-liquid separation device 6 is installed at the water collecting port 5, a rectangular sand collecting plate 7 is horizontally hinged below the solid-liquid separation device 6, a sand cleaning device 8 is installed above the sand collecting plate 7 on the lower belt surface of the conveyor belt 1, a spray device 9 which is right opposite to the conveyor belt 1 is installed above the water collecting box 4, a rectangular sand outlet 10 is arranged on the, two side edges of the sand collecting plate 7 are abutted against the side wall of the collecting box 2, and a driving device 11 for driving the sand collecting plate 7 to move up and down is arranged at the sand outlet 10; when the conveying belt 1 needs to be cleaned, firstly, the spraying device 9 is opened, the sand collecting plate 7 is driven by the driving device 11 to enable the sand collecting plate 7 to incline towards one side of the solid-liquid separation device 6, sand and water on the conveying belt 1 are cleaned to the sand collecting plate 7 by the sand cleaning device 8 in the moving process of the conveying belt 1, the sand and the water are separated by the solid-liquid separation device 6, the water flows into the water collecting tank 4 through the water collecting port 5, when more sand is on the sand collecting plate 7, the sand collecting plate 7 is driven by the driving device 11 to move downwards, and then the sand on the sand collecting plate 7 is cleaned.

Referring to fig. 2 and 3, the solid-liquid separation device 6 comprises a U-shaped groove 61 integrally fixed at the position of the water collecting port 5 and with opposite upper and lower notches, a porous filter plate 62 is inserted in the U-shaped groove 61, and one side of the collecting tank 2 is provided with a filter plate socket 63 penetrating through the side wall of the U-shaped groove 61; the sand cleaning device 8 comprises a rolling brush 81 which is horizontally fixed at the top of the collecting box 2 and is abutted against the bottom surface of the conveyor belt 1, the length of the rolling brush 81 is equal to the width of the conveyor belt 1, the length direction of the rolling brush 81 is vertical to the moving direction of the conveyor belt 1, the rolling brush 81 is close to the higher side of the conveyor belt 1, is parallel to the higher side of the conveyor belt 1 and is vertically and integrally connected with a rectangular sand scraping plate 82 on the side wall of the collecting box 2, the upper end of the sand scraping plate 82 is abutted against the bottom surface of the conveyor belt 1, the length of the sand scraping plate 82 is equal to; the spraying device 9 comprises a spray head 91 which is arranged on the top of the collecting box 2 close to the higher side of the conveyor belt 1, the spray head 91 faces the conveyor belt 1, a water suction pump 92 is arranged at the bottom in the water collecting box 4, and the water suction pump 92 is communicated with the spray head 91 through a pipeline; two side walls of the collecting box 2 vertical to the rolling brush 81 extend upwards to form a baffle 15, the upper end of the baffle 15 is higher than the lower bottom surface of the conveyor belt 1, an elastic pressing sheet 21 with a triangular cross section is horizontally and integrally connected to the side wall of the collecting box 2 above the hinged edge of the sand collecting plate 7, and the bottom surface of the elastic pressing sheet 21 is tightly pressed with the sand collecting plate 7;

therefore, when the sand attached to the conveyor belt 1 is conveyed to the sand scraping plate 82, a large amount of sand is scraped down to the sand collecting plate 7 by the sand scraping plate 82, and then the conveyor belt 1 is brushed at the rolling brush 81, and the length of the rolling brush 81 and the length of the sand scraping plate 82 are not less than the width of the conveyor belt 1, so that the cleaning is more sufficient; a water suction pump 92 is arranged at the bottom in the water collecting tank 4 and is connected with the spray nozzle 91 through a pipeline to supply water to the spray nozzle 91, so that the collected water can be recycled; when clearing up, when spray set 9 sprayed water to conveyer belt 1, prevent that the water droplet from splashing out conveyer belt 1 both sides influence the construction and waste water resource, set up elasticity preforming 21 and sand collecting plate 7 and compress tightly mutually at 2 lateral walls of collecting box, prevent that the water of collecting from flowing out from articulated department.

Referring to fig. 2, the driving device 11 includes a connecting shaft 111 horizontally and fixedly connected to the bottom of the sand outlet 10, a hydraulic cylinder 112 is rotatably connected to the middle of the connecting shaft 111, and the end of the output shaft of the hydraulic cylinder 112 is hinged to the end of the sand collecting plate 7 away from the hinged edge; two sides of the end part of the sand collecting plate 7 are respectively and fixedly connected with a screw 12 horizontally, the screw 12 is provided with an arc-shaped travel groove 13 corresponding to the side wall of the collecting box 2, the screw 12 extends out of the travel groove 13, and the end part is provided with a butterfly nut 14; a filter screen 16 is horizontally clamped below the water collecting opening 5 in the water collecting tank 4, a water outlet 17 and a matched sealing cover 18 are arranged at the bottom of the water collecting tank 4, and a cleaning opening 19 and a matched tank cover 20 are arranged at the top of the water collecting tank 4.

Therefore, when the conveyor belt 1 is cleaned, the hydraulic cylinder 112 drives the sand-collecting plate 7 to incline towards the side close to the solid-liquid separation device 6, so that water on the sand-collecting plate 7 flows to the solid-liquid separation device 6 for separation; when too much sand is on the sand-collecting plate 7, the hydraulic cylinder 112 drives the sand-collecting plate 7 to incline towards one side of the sand outlet 10, so that the cleaning efficiency of the sand on the sand-collecting plate 7 is improved; when the sand-collecting plate 7 inclines to the side close to the solid-liquid separation device 6, the butterfly nut 14 and the screw 12 are screwed up in a matching way, so that the auxiliary supporting and limiting effects can be achieved on the two sides of the end part of the sand-collecting plate 7; the filter screen 16 can carry out secondary filter to the water of collecting, prevents that suction pump 92 from blockking up, sets up outlet 17 and the sealed lid 18 of assorted in header tank 4 below, conveniently clears up the water in the header tank 4, has seted up clearance mouth 19 and assorted case lid 20 at header tank 4 top, conveniently clears up and maintains header tank 4 is inside.

The implementation principle of the embodiment is as follows: when the conveying belt 1 needs to be cleaned, firstly, the water suction pump 92 is turned on to enable the spray nozzle 91 to spray water to the conveying belt 1, then the material placing plate is driven by the hydraulic cylinder 112 to enable the sand collecting plate 7 to incline towards one side of the solid-liquid separation device 6, the butterfly nut 14 and the screw 12 are matched and screwed tightly, when sand attached to the conveying belt 1 is conveyed to the sand scraping plate 82, the sand scraping plate 82 scrapes a large amount of sand down to the sand collecting plate 7, then the conveying belt 1 is brushed at the rolling brush 81, the sand and the water on the conveying belt 1 are cleaned to the sand collecting plate 7, the sand and the water are separated through the filter plate 62, the water flows into the water collecting tank 4 through the water collecting port 5, when the sand on the sand collecting plate 7 is large in amount, the sand collecting plate 7 is driven by the hydraulic cylinder 112 to move downwards to enable the sand collecting plate 7 to incline towards one side of the sand outlet 10, and then the sand on the sand collecting. The utility model has the advantages of convenient cleaning of the conveyor belt 1, and convenient reutilization of sand and water separation;

the embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. A sand and stone conveyor belt cleaning device comprises a conveyor belt (1) which is obliquely arranged, and is characterized in that a collecting box (2) is arranged below the conveyor belt (1), the top of the collecting box (2) is parallel to the bottom surface of the conveyor belt (1), an opening (3) is arranged at the top of the collecting box, a water collecting box (4) is arranged at one side, close to the higher side of the conveyor belt (1), of the collecting box (2), a water collecting opening (5) is arranged at the joint of the water collecting box (4) and the collecting box (2), a solid-liquid separation device (6) is arranged at the position of the water collecting opening (5), a sand collecting plate (7) is horizontally hinged below the solid-liquid separation device (6), a sand cleaning device (8) is arranged above the sand collecting plate (7) and on the lower belt surface of the conveyor belt (1), a spraying device (9) which is right opposite to the conveyor belt (1) is arranged above the water collecting box (4), a sand, the end part of the sand collecting plate (7) extends out of the sand outlet (10), two sides of the sand collecting plate (7) are abutted against two side walls of the collecting box (2), and a driving device (11) for driving the sand collecting plate (7) to move up and down is arranged at the sand outlet (10).

2. A sand and stone conveyor belt cleaning apparatus according to claim 1, characterized in that said solid-liquid separator (6) comprises a U-shaped groove (61) disposed at said water collection port (5) with opposite upper and lower notches, a porous filter plate (62) is inserted into said U-shaped groove (61), and a filter plate insertion opening (63) is disposed on one side of said collection tank (2) and penetrates through the side wall of said U-shaped groove (61).

3. A sand and stone conveyor belt cleaning device according to claim 1, characterized in that the sand cleaning device (8) comprises a rolling brush (81) horizontally arranged on the top of the collecting box (2) and abutted against the bottom surface of the conveyor belt (1), the length of the rolling brush (81) is not less than the width of the conveyor belt (1), the length direction of the rolling brush (81) is perpendicular to the moving direction of the conveyor belt (1), a vertical scraping plate (82) is arranged on the side of the conveyor belt (1) close to the higher side and parallel to the conveyor belt (1), the upper end of the scraping plate (82) is abutted against the bottom surface of the conveyor belt (1), the length of the scraping plate (82) is not less than the width of the conveyor belt (1), and the rolling brush (81) and the scraping plate (82) are positioned right above the sand collecting plate (7).

4. A sand and stone conveyor belt cleaning device according to claim 1, characterized in that the spraying device (9) comprises a spray head (91) which is arranged on the collection box (2) near the top of the higher side of the conveyor belt (1), the spray head (91) faces the conveyor belt (1), a water suction pump (92) is arranged at the bottom in the water collection box (4), and the water suction pump (92) is communicated with the spray head (91) through a pipeline.

5. A sand and gravel conveyor belt cleaning device according to claim 1, wherein the driving device (11) comprises a connecting shaft (111) horizontally arranged at the bottom of the sand outlet (10), a hydraulic cylinder (112) is rotatably connected to the connecting shaft (111), and the end of the output shaft of the hydraulic cylinder (112) is hinged to the end of the sand collecting plate (7) far away from the hinged edge.

6. A sand and stone conveyor belt cleaning device according to claim 5, characterized in that, the both sides of the end of the sand collecting plate (7) are respectively and fixedly connected with a screw (12) horizontally, the screw (12) is provided with an arc-shaped travel groove (13) corresponding to the side wall of the collecting box (2), the screw (12) extends from the travel groove (13) and the end is provided with a butterfly nut (14).

7. A sand and stone conveyor belt cleaning device according to claim 3, characterized in that the collecting box (2) extends upwards perpendicular to the two side walls of the rolling brush (81) to form a baffle (15), the upper end of the baffle (15) is higher than the lower bottom surface of the conveyor belt (1), the side wall of the collecting box (2) above the hinged edge of the sand collecting plate (7) is horizontally provided with an elastic pressing sheet (21), and the bottom surface of the elastic pressing sheet (21) is pressed with the sand collecting plate (7).

8. A sand and stone conveyor belt cleaning device according to claim 6, characterized in that, a filter screen (16) is horizontally arranged in the water collecting tank (4) below the water collecting opening (5), a water outlet (17) and a matched sealing cover (18) are arranged at the bottom of the water collecting tank (4), and a cleaning opening (19) and a matched box cover (20) are arranged at the top of the water collecting tank (4).

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