CN219560638U - Workpiece cleaning device - Google Patents

Abstract

The utility model relates to a workpiece cleaning device, which comprises a working area and a first spraying part, wherein the first spraying part comprises a first spraying rod, a first hose is connected with the upper end of the first spraying rod to provide a water source, the top of the lower end of the first spraying rod is provided with a first spray head, the first spraying part also comprises a second spraying rod, the side surface of the lower end of the second spraying rod is provided with a second spray head for transverse spraying, the upper end of the second spraying rod is provided with a rotating shaft, the outer side of the rotating shaft is sleeved with a shaft sleeve, the shaft sleeve is provided with a second hose which is connected in a penetrating way, the first spraying part also comprises a motor G, a workpiece with a larger volume is placed in the working area, the first spray head of the first spraying rod is used for directly spraying and cleaning dirt and trix in the transverse surface and the vertical holes and grooves of the workpiece downwards, and the motor G drives the rotating shaft to rotate for positioning and cleaning the dirt and trix in the vertical surface and the transverse holes and the grooves by 360 degrees, so that the workpiece with a larger volume is accurately cleaned.

Description

Workpiece cleaning device

Technical Field

The utility model relates to the field of cleaning equipment, in particular to a workpiece cleaning device.

Background

In the industrial production and operation activities, the normal use of the workpiece is affected by the pollutants such as greasy dirt, trivial scraps and the like, so that the workpiece needs to be cleaned, and in order to solve the problem of the cleaning efficiency of the workpiece, the applicant applies for an utility model patent (a cleaning machine) with the publication number of CN115213162A, and the technical scheme is as follows: the cleaning machine comprises a workbench, a cleaning pool is arranged on the workbench, a cylinder body used for accommodating workpieces is arranged in the cleaning pool in a transverse rotating mode, a rotary driving source capable of driving the cylinder body to rotate is arranged on the workbench, and a plurality of meshes are arranged on the cylinder body; the workbench is also provided with a liquid storage tank for storing cleaning liquid and a transfusion pipeline capable of conveying the cleaning liquid in the liquid storage tank into the cleaning tank.

However, in the above patent, the method of cleaning the workpiece inside the barrel by rotating the barrel is applicable to workpieces with smaller volumes, and when the volume of the workpiece is large, the barrel cannot accommodate the workpiece, or cannot be cleaned due to the large volume after accommodating.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide a workpiece cleaning device capable of cleaning workpieces with larger volumes.

The technical aim of the utility model is realized by the following technical scheme:

the utility model provides a work piece belt cleaning device, includes work area and first injection portion, first injection portion includes first spray lance, first spray lance lower extreme stretches into the work area, first hose with first spray lance upper end is connected and is provided the water source, first spray lance lower extreme top is provided with first shower nozzle, first shower nozzle sprays downwards and to wash the work piece in the work area, first injection portion still includes the second spray lance, second spray lance lower extreme stretches into the work area, second spray lance lower extreme side is provided with the second shower nozzle of horizontal spraying, second spray lance upper end is provided with the pivot, the axle sleeve is established to the pivot outside cover, the axle sleeve is provided with through connection's second hose, the water source follow the second hose pass through the pivot with the cavity of axle sleeve gets into the second spray lance, first injection portion still includes motor G, motor G drives the pivot rotation makes the second shower nozzle sprays the work piece in horizontal direction degree rotation or stops to spray.

Further, the first spray head is arranged to be provided with spray holes on the top surface of the bottom end of the first spray rod, and the second spray head is arranged to be provided with spray holes on the side surface of the bottom end of the second spray rod.

Further, the first spraying part further comprises a first water pump, the first water pump is in through connection with the first hose and the second hose, a controller is arranged at the joint of the first hose and the second hose, and the controller controls the water source of the first water pump to pass through only one of the first hose or the second hose.

Further, the first spraying part further comprises a first water pump and a second water pump, the first water pump is in through connection with the first hose to provide a water source, and the second water pump is in through connection with the second hose to provide a water source.

Further, the first spraying portion further comprises a first moving table and a motor C which are transversely arranged, the motor C drives the first moving table to longitudinally slide back and forth through a screw rod assembly, a second moving table and a motor D are arranged on the first moving table, the motor D drives the second moving table to transversely slide left and right through the screw rod assembly, a motor E and a motor F are arranged on the second moving table, the motor E is connected and drives the first spraying rod to move up and down through the screw rod assembly which is longitudinally arranged, and the motor F is connected and drives the shaft sleeve to move up and down through the screw rod assembly which is longitudinally arranged, so that the second spraying rod correspondingly moves up and down.

Further, the device also comprises a base and a motor A, wherein the base is used for placing a workpiece, and the motor A drives the base to move back and forth through a screw rod assembly to control the base to enter and exit in the working area or adjust the position of the base in the working area.

Further, the fixture is characterized by further comprising a motor B, wherein rotating discs are oppositely arranged on two sides of the base, the motor B is connected with and drives the rotating discs on at least one side to rotate, the rotating discs are detachably connected with fixture tables for fixing workpieces, clamping teeth are oppositely arranged on two ends of the upper side of each fixture table, the workpiece is separated and clamped by opening and closing the clamping teeth, and the rotating discs are driven by the motor B to axially rotate and stop to fix the fixture tables at a certain angle.

Further, the device also comprises a filter vat, wherein the filter vat is connected with a water pump for filtering a water source for recycling, a second spraying part for spraying and washing and a third spraying part for blowing are arranged at the rear side of the working area, the second spraying part comprises a water knife spraying opening for spraying water, a water pipe A for providing the water source and a water pump A, the water knife spraying opening is a flat outlet which is transversely arranged and has a certain length, and the water knife spraying opening sprays water to wash a workpiece in the working area; the third spraying part comprises an air knife spraying opening for air outlet, an air pipe for providing wind power and a fan, wherein the air knife spraying opening is used for air outlet drying of workpieces in the working area, and an air outlet for ventilation is arranged on the rear side wall of the working area.

Further, a water inlet hole is formed in the middle of the side surface of the shaft sleeve, a circular water injection groove is formed in the position, corresponding to the water inlet hole, of the side surface of the rotating shaft in a concave mode, a through cavity which enables the water injection groove to be communicated with the second spray rod is formed in the rotating shaft, and the second hose is in communication connection with the water inlet hole.

In summary, compared with the prior art, the utility model has the following beneficial effects: the work piece with larger volume is placed in the working area, dirt and trivia in the horizontal surface of the work piece and the vertical holes and grooves are directly sprayed downwards through the first spray head of the first spray rod, and the second spray head is driven by the motor G to rotate to enable the rotating shaft to rotate for 360 degrees so as to clean the dirt and trivia in the vertical surface and the horizontal holes and grooves, thereby realizing the accurate cleaning of the work piece with larger volume.

Drawings

FIG. 1 is a schematic overall structure of a first embodiment;

FIG. 2 is a schematic diagram of the overall structure of a second embodiment;

FIG. 3 is a schematic view of a portion of the first injector;

FIG. 4 is a second schematic view of a portion of the first spraying portion;

FIG. 5 is a partial enlarged view of a first injector portion;

FIG. 6 is one of the partial enlarged views of the embodiment;

FIG. 7 is a schematic view of an exploded view of the bushing and shaft;

FIG. 8 is an enlarged partial cross-sectional view of the shaft sleeve and shaft assembly;

FIG. 9 is a partial enlarged view of a second embodiment.

Reference numerals:

1. a working area; 2. a base; 21. a rotating disc; 22. a clamp table; 221. clamping teeth; 23. a motor A; 24. a motor B; 3. a first ejection section; 31. a first mobile station; 311. a motor C; 32. a second mobile station; 321. a motor D; 33. a first spray bar; 331. a first hose; 333. a first nozzle; 334. a first water pump; 335. a controller; 336. a motor E; 34. a second spray bar; 341. a second hose; 342. a shaft sleeve; 347. a rotating shaft; 343. a second nozzle; 344. a second water pump; 3401. a water inlet hole; 3402. a water injection groove; 3403. a cavity is communicated; 345. a motor F; 346. a motor G; 4. a second ejection section; 41. a water jet orifice; 42. a water pump A; 7. a filter vat; 43. a water pipe A; 5. a third injection part; 51. an air knife jet orifice; 52. a blower; 53. an air duct; 6. and an air outlet.

Detailed Description

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The utility model is described in further detail below with reference to the accompanying drawings:

as shown in fig. 1 to 9, a workpiece cleaning device is provided, wherein the interior of the workpiece cleaning device is provided with a working area 1, the interior of the working area 1 is used for placing and cleaning workpieces, a first spraying part 3 comprises a first spraying rod 33, the first spraying rod 33 is vertically arranged up and down, the lower end of the first spraying rod 33 stretches into the working area 1, a first hose 331 is connected with the upper end of the first spraying rod 33 to provide a water source, the top of the lower end of the first spraying rod 33 is provided with a first spraying head 333, the first spraying head 333 is preferably provided with a spraying hole formed on the top surface of the bottom end of the first spraying rod 33, the first spraying head 333 sprays downwards to clean the workpieces in the working area 1, the first spraying part 3 further comprises a second spraying rod 34, the lower end of the second spraying rod 34 stretches into the working area 1, the side of the lower end of the second spray rod 34 is provided with a second spray head 343 for spraying transversely, the second spray head 343 is preferably provided with spray holes formed in the side of the bottom end of the second spray rod 34, the spray holes can be one or more according to the requirement of a workpiece, preferably, the spray holes are square in shape, the upper end of the second spray rod 34 is provided with a rotating shaft 347, a shaft sleeve 342 is sleeved outside the rotating shaft 347, the shaft sleeve 342 is provided with a second hose 341 which is connected in a penetrating way, a water source enters the second spray rod 34 from the second hose 341 through the rotating shaft 347 and a cavity of the shaft sleeve 342, the first spray part 3 further comprises a motor G346, and the motor G346 drives the rotating shaft 347 to rotate so that the second spray head 343 rotates in the horizontal direction for 360 degrees or stops spraying and cleaning the workpiece.

The source of water source can be set into two ways, one way is to set up the first water pump 334, the first water pump 334 through-connects the first hose 331 and the second hose 341, the first water pump 334 provides water source for the first hose 331 and the second hose 341, because during operation the first shower head 333 and the second shower head 343 can not work synchronously, therefore, the connection place of the first hose 331 and the second hose 341 is provided with the controller 335, the controller 335 controls the water source of the first water pump 334 to only pass through one of the first hose 331 or the second hose 341, i.e. when the first water pump 334 supplies water to the first hose 331, the controller 335 closes the channel of the second hose 341, when the first water pump 334 supplies water to the second hose 341, the controller 335 closes the channel of the first hose 331, the other way is that two water pumps are not set up, i.e. the first water pump 334 and the second water pump 344 are respectively arranged at the connection place of the first water pump 334 and the second water pump 341, thus the water source is only supplied through-connection with the first hose 331, and the second water pump 344 is only need to be turned on and turned off each time.

For the workpiece with a complex structure, the first spray rod 33 and the second spray rod 34 move up and down and left and right to enable the corresponding spray heads to flexibly move so as to further achieve the effect of accurate cleaning, in order to solve the problem of forward and backward movement, the first spray part 3 is provided with a first moving table 31 and a motor C311, the motor C311 drives the first moving table 31 to longitudinally slide forward and backward through the screw rod assembly, the screw rod assembly in the utility model is a combination of a screw rod, a sliding block and a sliding rail commonly used in the mechanical field, the sliding rail in the utility model can be set into a single sliding rail or a double sliding rail according to the objective requirements of setting positions, widths, lengths and the like, the screw rod assembly connected with the first moving table 31 is preferably a double sliding rail which is arranged at the top of a cleaning device in a left-right separated manner, the first moving table 31 is provided with a second moving table 32 and a motor D321, the motor D321 drives the second moving table 32 to transversely slide left and right through the screw rod assembly, the screw rod assembly connected with the second moving table 32 is preferably a double sliding rail, and the screw rod assembly is longitudinally arranged at the side of the second moving table 32 is longitudinally through the screw rod assembly is longitudinally arranged at the side of the upper side of the second moving table 32, and the screw rod assembly is longitudinally arranged below the screw rod assembly is correspondingly a screw rod assembly is connected with the screw rod assembly is arranged at the lower spindle assembly and is arranged at the front, and is longitudinally is connected with the spindle assembly is provided with a spindle assembly has a spindle assembly frame assembly. The first movable stage 31 drives two spray bars to move synchronously back and forth, the second movable stage 32 drives two spray bars to move synchronously left and right, the machine E336 and the motor F345 respectively control the two spray bars to move up and down independently of each other, so that the movement of the two spray heads in the left direction up and down, left and right and back directions is realized, meanwhile, the second spray bar 34 can rotate axially to enable the second spray head 343 to rotate and spray at 360 degrees, the cleaning accuracy and the cleaning degree are further provided, and in addition, through replacing spray bars with different thicknesses or spray heads with different apertures, the holes or grooves with different apertures of a workpiece can be subjected to deep internal jet cleaning.

In this embodiment, the workpiece placement device further includes a base 2 and a motor a23, the base 2 is used for placing the workpiece, the motor a23 drives the base 2 to move back and forth through a screw rod assembly to control the base 2 to enter and exit or adjust the position of the base 2 in the working area 1, preferably, the screw rod assembly is disposed at the bottom of the working area 1, the screw rod assembly preferably adopts a front-back dual-slide rail structure, the workpiece placement device further includes a motor B24, rotating discs 21 are relatively disposed at two sides of the base 2, the motor B24 is connected with and drives at least one side of the rotating discs 21 to rotate, preferably, the rotating discs 21 are preferably disposed at one side controlled by the motor B24, the rotating discs 21 are detachably connected with a clamping table 22 for fixing the workpiece, clamping teeth 221 are relatively disposed at two ends of the upper side of the clamping table 22, and the clamping teeth 221 are opened and closed to separate and clamp the workpiece, and the clamping table 22 are fixed at a certain angle by the screw rod assembly is preferably disposed at the bottom of the working area 1, the rotating discs 21 are relatively rotated and stopped by the motor B24, and the clamping tables 22 are detachably connected with the rotating discs 21 to be convenient for replacing the clamping tables 22 according to different sizes and specifications of the workpiece.

In the embodiment, a second spraying part 4 for spraying and washing and a third spraying part 5 for blowing are arranged at the rear side of the working area 1, the second spraying part 4 comprises a water knife spraying port 41 for spraying water, a water pipe A43 for providing a water source and a water pump A42, the water knife spraying port 41 is a flat outlet which is transversely arranged and has a certain length, and the water knife spraying port 41 sprays water to wash a workpiece in the working area 1; the third spraying part 5 comprises an air knife spraying opening 51 for air outlet, an air pipe 53 for providing wind power and a fan 52, wherein the air knife spraying opening 51 is used for air outlet and drying of workpieces in the working area 1, and preferably, the third spraying part 5 is provided with a heating device, so that hot air is blown out by the air knife spraying opening 51; the rear side wall of the working area 1 is provided with an air outlet 6 for ventilation, and the air outlet 6 is connected with the outside and used for discharging air and water vapor.

As shown in fig. 6, the cleaning device further comprises a filter vat 7, wherein the filter vat 7 is connected with a water pump to filter the water source for recycling, specifically, for saving water resources, the workpiece cleaning device can work by using the circulating water source, and for ensuring the cleanliness of water sprayed on the workpiece, the filter vat 7 is connected with each high-pressure water pump to filter the water source, and after filtration, the water pump and the cleaning work are ensured to be normally carried out.

As shown in fig. 7-8, in the structure of the sleeve and the shaft, the middle part of the side surface of the sleeve 342 is provided with a water inlet 3401, the side surface of the shaft 347 is provided with a water injection groove 3402 which is concave in a circular shape at the corresponding position of the water inlet 3401, a through cavity 3403 which penetrates the water injection groove 3402 and the second spray rod 34 is formed inside the shaft 347, the second hose 341 is connected with the water inlet 3401 and the through hole, a water source enters the water injection groove 3402 from the water inlet 3401 through the second hose 341, water in the water injection groove 3402 enters the second spray rod 34 through the through cavity 3403 and then is sprayed from the second spray head 343, and it is noted that the circular concave of the water injection groove 3402 provides a containing space for the entering water source, so that no matter the junction between the water injection groove 3402 and the through cavity 3403 is set as a hole in time, the water source can still enter the through cavity 3403 in the rotation of the shaft 347, only a space for axial rotation movement is required between the sleeve 342 and the shaft 347, and the shaft can be further sealed at both ends of the sleeve 347.

In the present utility model, the respective motors are preferably provided as servo motors in order to control the accuracy of the movement; the first water pump and the second water pump are preferably ultrahigh-pressure water pumps with the pressure of 300 kg-500 kg and the water flow rate of 1.5 cubic meters per hour; the water pump A is preferably a high-pressure water pump with the pressure of 3 kg-5 kg and the water flow rate of 15 cubic meters per hour, and the fan is preferably a high-speed fan with the speed of 20000 revolutions per minute.

Workpiece cleaning is performed by using a workpiece cleaning device, and the method comprises the following steps of:

(1) After the clamping teeth 221 clamp the workpiece by adopting the clamp table 22 corresponding to the size of the workpiece to be cleaned, the motor A23 moves forwards through the screw rod assembly to send the workpiece into the designated position of the working area 1;

(2) At the default angle of the rotating disc 21, the first nozzle 333 or the second nozzle 343 moves up and down, back and forth, and left and right through the related screw rod assembly, and the two spray the workpiece separately or alternately, the first nozzle 333 sprays the dirt on the lateral surface, the vertical hole and the groove in the workpiece directly downward, the second nozzle 343 sprays the dirt directly horizontally and drives 360 degrees to rotate or stops cleaning the dirt on the vertical surface, the lateral hole and the groove in the workpiece by the rotating shaft 347, the first nozzle 333 and the second nozzle 343 can spray the dirt on the irregular surface or the oblique hole alternately, and after the first nozzle 333 and the second nozzle 343 stop spraying, the water jet nozzle 41 sprays the water jet to flush;

(3) The motor B24 drives the rotating disc 21 to rotate to set the workpiece at a certain specific angle, and the same action is repeated again by rotating the angle again after the step 2 action is repeated until all angles set by all the workpieces are cleaned;

(4) The air knife jet orifice 51 jets strong air, and the rotating disc 21 correspondingly rotates and positions to finish the drying of the workpiece;

(5) The motor A23 moves backwards through the screw rod assembly to send the workpiece out of the working area 1, the clamping teeth 221 loosen the workpiece, and cleaning is finished.

From the above description, it can be seen that the above embodiments achieve the following technical effects: the work piece is arranged in the working area, according to the trend of the surface and the holes or the grooves of the work piece, the first hose provides a water source for the first spray rod, dirt and trivia in the transverse surface and the vertical holes and the grooves of the work piece are directly sprayed downwards through the first spray head of the first spray rod, the second hose can provide a water source for the second spray rod, and the motor G drives the rotating shaft to rotate, so that the dirt and trivia in the vertical surface and the transverse holes and the grooves are cleaned through 360-degree rotation positioning of the second spray head, and the technical effect of accurately cleaning the work piece with a larger volume is achieved.

The foregoing is merely exemplary embodiments of the present utility model and is not intended to limit the scope of the utility model, which is defined by the appended claims.

Claims (10)

1. Work piece belt cleaning device, including work area (1) and first injection portion (3), first injection portion (3) include first spray lance (33), first spray lance (33) lower extreme stretches into work area (1), first hose (331) with first spray lance (33) upper end is connected and is provided the water source, its characterized in that: the utility model discloses a work piece cleaning device, including work area (1), first spray lance (33) lower extreme top is provided with first shower nozzle (333), first shower nozzle (333) jet downwards to work piece in work area (1) washs, first injection portion (3) still include second spray lance (34), second spray lance (34) lower extreme stretches into work area (1), second spray lance (34) lower extreme side is provided with second shower nozzle (343) of horizontal spraying, second spray lance (34) upper end is provided with pivot (347), axle sleeve (342) are established to pivot (347) outside cover, axle sleeve (342) are provided with through connection's second hose (341), and the water source is followed second hose (341) pass through pivot (347) with the cavity of axle sleeve (342) gets into second spray lance (34), first injection portion (3) still include motor G (346), motor G (346) drive pivot (347) rotate so that second shower nozzle (343) are rotated in horizontal direction or are stopped to spray the work piece.

2. A workpiece cleaning apparatus as defined in claim 1, wherein: the first spray head (333) is arranged as a spray hole formed in the top surface of the bottom end of the first spray rod (33), and the second spray head (343) is arranged as a spray hole formed in the side surface of the bottom end of the second spray rod (34).

3. A workpiece cleaning apparatus as defined in claim 2, wherein: the first spraying part (3) further comprises a first water pump (334), the first water pump (334) is in through connection with the first hose (331) and the second hose (341), a controller (335) is arranged at the joint of the first hose (331) and the second hose (341), and the controller (335) controls a water source of the first water pump (334) to pass through only one of the first hose (331) or the second hose (341).

4. A workpiece cleaning apparatus as defined in claim 2, wherein: the first spraying part (3) further comprises a first water pump (334) and a second water pump (344), the first water pump (334) is in through connection with the first hose (331) to provide a water source, and the second water pump (344) is in through connection with the second hose (341) to provide a water source.

5. A workpiece cleaning apparatus as defined in claim 3 or 4, wherein: the first spraying part (3) further comprises a first moving table (31) and a motor C (311) which are transversely arranged, the motor C (311) drives the first moving table (31) to longitudinally slide back and forth through a screw rod assembly, a second moving table (32) and a motor D (321) are arranged on the first moving table (31), the motor D (321) drives the second moving table (32) to transversely slide left and right through the screw rod assembly, a motor E (336) and a motor F (345) are arranged on the second moving table (32), the motor E (336) is connected and drives the first spraying rod (33) to vertically move through the screw rod assembly which is longitudinally arranged, and the motor F (345) is connected and drives the shaft sleeve (342) to vertically move so that the second spraying rod (34) correspondingly moves up and down.

6. A workpiece cleaning apparatus as defined in claim 5, wherein: the device is characterized by further comprising a base (2) and a motor A (23), wherein the base (2) is used for placing a workpiece, and the motor A (23) drives the base (2) to move back and forth through a screw rod assembly to control the base (2) to enter and exit in the working area (1) or adjust the position of the base (2) in the working area (1).

7. A workpiece cleaning apparatus as defined in claim 6, wherein: the device is characterized by further comprising a motor B (24), wherein rotating discs (21) are oppositely arranged on two sides of the base (2), the motor B (24) is connected with and drives the rotating discs (21) on at least one side to rotate, the rotating discs (21) are detachably connected with clamp tables (22) for fixing workpieces, clamping teeth (221) are oppositely arranged on two ends of the upper side of each clamp table (22), the clamping teeth (221) are opened and closed to separate and clamp the workpieces, and the motor B (24) rotates or not to drive the rotating discs (21) to axially rotate and stop so that the clamp tables (22) are fixed at a certain angle.

8. A workpiece cleaning apparatus as defined in claim 7, wherein: the water jet device comprises a working area (1), and is characterized by further comprising a filter vat (7), wherein the filter vat (7) is connected with a water pump for filtering and recycling a water source, a second jet part (4) for spraying and washing and a third jet part (5) for blowing are arranged at the rear side of the working area (1), the second jet part (4) comprises a water jet orifice (41) for spraying water, a water pipe A (43) for providing the water source and a water pump A (42), the water jet orifice (41) is a flat outlet which is transversely arranged and has a certain length, and the water jet orifice (41) sprays water to wash workpieces in the working area (1); the third injection part (5) comprises an air knife injection port (51) for air outlet, an air pipe (53) for providing wind power and a fan (52), wherein the air knife injection port (51) is used for air outlet to dry workpieces in the working area (1), and an air outlet (6) for ventilation is arranged on the rear side wall of the working area (1).

9. A workpiece cleaning apparatus as defined in claim 8, wherein: the first water pump (334) is an extra-high pressure water pump with the pressure of 300 kg-500 kg and the water flow rate of 1.5 cubic meters per hour; the water pump A (42) is a high-pressure water pump with the pressure of 3 kg-5 kg and the water flow rate of 15 cubic meters per hour, and the fan (52) is a high-speed fan with the speed of 20000 revolutions per minute.

10. A workpiece cleaning apparatus as defined in any one of claims 1-4, wherein: the water injection device is characterized in that a water inlet hole (3401) is formed in the middle of the side surface of the shaft sleeve (342), a water injection groove (3402) which is concavely formed in the position corresponding to the water inlet hole (3401) is formed in the side surface of the rotating shaft (347), a through cavity (3403) which is communicated with the water injection groove (3402) and the second spray rod (34) is formed in the rotating shaft (347), and a second hose (341) is communicated with the water inlet hole (3401).