CN220781545U

CN220781545U - Soaking device

Info

Publication number: CN220781545U
Application number: CN202322452678.0U
Authority: CN
Inventors: 张大全
Original assignee: Leshan Jinkouhe Senbao Wild Plant Development Co ltd
Current assignee: Leshan Jinkouhe Senbao Wild Plant Development Co ltd
Priority date: 2023-09-11
Filing date: 2023-09-11
Publication date: 2024-04-16
Anticipated expiration: 2033-09-11

Abstract

The utility model provides a soaking device, and aims to solve the technical problem that water resources are wasted when fresh gastrodia elata is soaked and cleaned in the prior process. The device comprises: a support frame; the rotary drum is arranged on the support frame and is provided with a sealing door, a water inlet and a water outlet; the driving device is in driving connection with the rotary drum and can drive the rotary drum to rotate; wherein, a plurality of stand columns are respectively arranged at two sides of the inside of the rotary drum, and a brush is arranged on the outer wall of the stand column. After the novel gastrodia elata is soaked, through setting up at the inside brush of rotary drum and rotating the rotary drum, can directly utilize soaking water to carry out preliminary washing to the gastrodia elata and then discharge water, can carry out make full use of to water, moreover, through the cooperation of brush and rotary drum, can get rid of the surperficial most silt of gastrodia elata to can reduce the degree of difficulty that sprays the washing afterwards, improve washing efficiency, reduce the water consumption, the practicality is strong.

Description

Soaking device

Technical Field

The utility model relates to the technical field of gastrodia elata processing, in particular to a soaking device.

Background

Gastrodia elata is a saprophytic herb of Gastrodia genus of Orchidaceae family, which belongs to a rare traditional Chinese medicine. At present, fresh gastrodia elata obtained through cultivation is usually required to be placed into a soaking tank or a soaking box for soaking for a period of time when being processed, then the gastrodia elata is fished out and placed into cleaning equipment to wash soil on the surface of the gastrodia elata, a large amount of water is usually required when the gastrodia elata is soaked, in the prior art, after the gastrodia elata is soaked, liquid is usually directly discharged, so that water resources are wasted, and in addition, the soil attached to the surface of the gastrodia elata after the gastrodia elata is soaked is more, a large amount of water sources are required when the gastrodia elata enters a washing process, and the water resources are further wasted.

Disclosure of Invention

Aiming at the situation, the utility model aims to overcome the defects of the prior art and provide the soaking device which solves the technical problem that water resources are wasted when the existing fresh gastrodia elata is soaked and cleaned.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a soaking device comprising: a support frame; the rotary drum is arranged on the support frame and is provided with a sealing door, a water inlet and a water outlet; the driving device is in driving connection with the rotary drum and can drive the rotary drum to rotate; wherein, a plurality of stand columns are respectively arranged at two sides of the inside of the rotary drum, and a brush is arranged on the outer wall of the stand column.

After the novel gastrodia elata is soaked, the brush arranged in the rotary drum and the rotary drum are rotated, so that the soaking water can be directly utilized to carry out preliminary cleaning on the gastrodia elata, then the water is discharged, and the water can be fully utilized; moreover, through the cooperation of brush and rotary drum, can get rid of the surperficial most silt of gastrodia elata to can reduce the degree of difficulty that the back sprays the washing, improve washing efficiency, reduce the water consumption, the practicality is strong.

Optionally, the rotary drum both ends respectively through first pivot and second pivot with the support frame rotates to be connected, first pivot with drive arrangement drive connection.

Optionally, a driven wheel is installed on the first rotating shaft at one end of the rotating drum, the driving device comprises a motor and a driving wheel connected to the power output end of the motor, and the driving wheel is connected with the driven wheel through a belt.

Optionally, the upright comprises a long upright and a short upright, and the long upright and the short upright are arranged around the circumference of the rotary drum at intersecting intervals.

Optionally, the inside one end or both ends of rotary drum are provided with the baffle, the stand install in on the baffle lateral wall, keep away from the casing is installed to the baffle lateral wall of stand, set up on the baffle a plurality of with the fumarole that casing inside cavity is linked together, bubble generating device is installed in the casing outside, bubble generating device's output with casing inside cavity is linked together.

Optionally, air injection holes are formed between two adjacent upright posts.

Optionally, the apparatus further comprises: the water tank is arranged at the outer side of the rotary drum; one end of the water outlet pipe is detachably connected with the water outlet, and the other end of the water outlet pipe is communicated with the water tank; one end of the connecting pipe is communicated with the water tank, and the other end of the connecting pipe is detachably connected with the water inlet of the rotary drum; the water tank is characterized in that a filtering device is arranged at the joint of the connecting pipe and the water tank, and a water pump is arranged on the connecting pipe.

Optionally, install first connector on the rotary drum, the connecting pipe with first connector can dismantle the connection, outlet department installs the second connector, the outlet pipe with the second connector can dismantle the connection.

Optionally, a grid plate is arranged in the rotary drum above the water outlet, a gap between the lower surface of the grid plate and the inner wall of the rotary drum forms a settling chamber, and a gap is formed between the grid plate and the upright post.

Optionally, second pivot one end extends to the rotary drum inside, the water cavity has been seted up to second pivot inside, and a plurality of shower nozzles that are linked together with the water cavity are installed to the second pivot outer wall that is located the rotary drum inside, and the second pivot that is located the rotary drum outside is connected with the feed liquor pipe through the joint.

Compared with the prior art, the utility model has the beneficial effects that:

1. this novel setting that rotates the rotary drum that will soak and wash combines as an organic wholely, after novel gastrodia elata soaks, through setting up at the inside brush of rotary drum and rotating the rotary drum, can directly utilize soaking water to carry out preliminary washing back again with the water discharge to the gastrodia elata, be equivalent to carrying out reuse to the soaking water, can make full use of to the water, moreover, through the cooperation of brush and rotary drum, can get rid of the most silt in gastrodia elata surface, thereby can reduce the degree of difficulty that sprays the washing afterwards, improve washing efficiency, reduce the water consumption, have stronger practicality strong.

2. Through the air bubble generating device with gas input to the cavity of casing and then spout from the fumarole for soaking water in the rotary drum can produce the bubble, is favorable to improving the mobility of water, reducible gastrodia elata soak time, improves soaking effect.

3. Through setting up of water tank, water pump and pipeline, the gastrodia elata is when soaking, can circulate the inside soaking water of rotary drum to reduce the turbidity of soaking water, not only can improve the soaking effect, also conveniently rotate abluent effect after soaking finishes.

4. Through the improvement to the second pivot for this device not only can utilize the soak water to accomplish preliminary washing, can also accomplish the gastrodia elata and wash, also be favorable to soaking the back to the cleaning work of rotary drum inner wall. Specifically, after the gastrodia elata is soaked, the rotating drum can be rotated to perform primary cleaning on the gastrodia elata by using soaking water, after the primary cleaning is completed, the spray head on the second rotating shaft can be used for performing secondary cleaning on the gastrodia elata, and after the cleaning is completed, the spray head is used for performing cleaning work on the drum wall.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a front view of the present utility model.

Fig. 3 is a schematic view of the structure of the inside of the soaking chamber in the present utility model.

Fig. 4 is a schematic view showing the structure of the inside of the installation chamber in the present utility model.

Fig. 5 is a schematic structural view of embodiment 5.

Reference numerals: 1. a support frame; 2. a rotating drum; 2a, a soaking chamber; 2b, an installation room; 2c, a sedimentation chamber; 20. sealing the door; 21. a first connector; 22. a second connector; 3. a driving device; 30. a motor; 31. a driving wheel; 32. a belt; 4. a column; 4a, long upright posts; 4b, short upright posts; 5. a brush; 6. a first rotating shaft; 60. driven wheel; 7. a second rotating shaft; 8. a partition plate; 80. a gas injection hole; 9. a housing; 90. a cavity; 10. a bubble generating device; 11. a water tank; 12. a water outlet pipe; 13. a connecting pipe; 14. a water pump; 15. a water inlet pipe; 16. a spray head; 17. a joint; 18. a liquid inlet pipe; 19. and a grid plate.

Detailed Description

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in numerous different ways without departing from the spirit or scope of the embodiments of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

In the description of the embodiments of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," "end," "side," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of describing the embodiments of the present application and for simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the embodiments of the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

In the examples of the present application, unless explicitly specified and limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, or may include both the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different implementations, or examples, for implementing different configurations of embodiments of the present utility model. In order to simplify the disclosure of embodiments of the present application, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the embodiments of the present application. Furthermore, the present application embodiments may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not in themselves indicate the relationship between the various embodiments and/or arrangements discussed.

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

Example 1

As shown in fig. 1 to 4, an embodiment of the present utility model provides a soaking device, which includes a supporting frame 1, a rotating drum 2, a driving device 3, a column 4 and a brush 5.

The rotary drum 2 rotates and installs on support frame 1, and drive arrangement 3 is connected and can drive rotary drum 2 rotation with the drive of rotary drum 2, is provided with a plurality of stands 4 respectively on the inside both sides inner wall of rotary drum 2, and brush 5 sets up the outer wall at stand 4. The rotary drum 2 is provided with a sealing door 20, a water inlet and a water outlet. When the gastrodia elata cleaning machine is used, the sealing door 20 is opened to throw fresh gastrodia elata into the rotating drum 2, the water inlet is externally connected with a water source, after the fresh gastrodia elata is soaked for a certain time, the driving device 3 is started, the driving device 3 drives the rotating drum 2 to rotate, and the dirt on the surface of the gastrodia elata can be removed through the arrangement of the hairbrush, so that the gastrodia elata cleaning machine is realized.

Specifically, the support frame 1 is located the both ends of rotary drum 2, and rotary drum 2 both ends are connected with first pivot 6 and second pivot 7 respectively, and first pivot 6 and second pivot 7 are all connected with support frame 1 through the bearing, and first pivot 6 one end extends to the support frame 1 outside and is connected with drive arrangement 3.

As an implementation scenario, in this scenario, the driving device 3 includes a motor 30 and a driving wheel 31 connected to a power output end of the motor 30, where the driving wheel 31 is connected to a driven wheel 60 mounted on the first rotating shaft 6 through a belt 32, and one end of the first rotating shaft 6 extends to an outer side of the support frame 1 and is mounted with the driven wheel 60. When in use, the motor 30 is started, and the motor 30 drives the first rotating shaft 6 to rotate through the driving wheel 31, the belt 32 and the driven wheel 60, so as to drive the rotating drum 2 to rotate. Optionally, a speed reducer may be further disposed at the output end of the motor 30. In actual use, the rotating speed of the rotating drum 2 is ensured to be not broken in the overturning process, for example, the rotating speed is 30-60 r/min. Of course, the driving device 3 may be directly connected to the first shaft 6 by a driving motor.

Alternatively, the columns 4 include long columns 4a and short columns 4b, the long columns 4a and short columns 4b being disposed at intersecting intervals around the circumference of the drum 2.

Alternatively, the cross section of the drum 2 is regular hexagonal.

Example 2

On the basis of embodiment 1, in this embodiment, a partition 8 is provided at one or both ends of the inside of the drum 2, the column 4 is mounted on the side wall of the partition 8, and a housing 9 is mounted on the side wall of the other side of the partition 8 away from the column 4, i.e., the partition 8 divides the inside of the drum 2 into a soak chamber 2a and a mounting chamber 2b located at one side or both sides of the soak chamber 2 a. The baffle plate 8 is provided with a plurality of air injection holes 80 communicated with the cavity inside the shell 9, the outer side of the shell 9 is provided with a bubble generating device 10, and the output end of the bubble generating device 10 is communicated with the cavity inside the shell 9.

Optionally, air injection holes 80 are formed between two adjacent upright posts 4.

The bubble generating device can adopt an air pump, and can also be replaced by other existing bubblers or combined with the air pump.

In this embodiment, the partition 8 is preferably two, i.e. the drum 2 is divided into a soaking chamber 2a and mounting chambers 2b located on both sides of the soaking chamber 2a, and the housing 9 and the bubble generating means 10 are provided in the mounting chambers 2b.

When in use, the bubble generating device 10 inputs gas into the cavity 90 of the shell 9 and then ejects the gas from the gas injection holes 80, so that bubbles are generated in the soaking water, the mobility of the soaking liquid is improved, and the soaking effect of the gastrodia elata is improved.

Example 3

In the embodiment 1 or 2, the water inlet of the drum 2 is connected to the first connector 21, and the external water source is connected to the first connector 21 to be removed when the water is not needed to be placed in the drum 2.

In this embodiment, the soaking device further includes a water tank 11, a water outlet pipe 12, a connecting pipe 13, a water pump 14, and a water inlet pipe 15, and a second connector 22 is connected to the water outlet of the drum 2.

Specifically, the water tank 11 is arranged outside the rotary drum 2, one end of the water outlet pipe 12 is detachably connected with the second connector 22 at the water outlet, and the other end of the water outlet pipe is communicated with the water tank 11; one end of the connecting pipe 13 is communicated with the water tank 11, a filtering device is arranged at the joint of the connecting pipe 13 and the water tank 11, and a water pump 14 is arranged on the connecting pipe 13.

Optionally, the first connector 21 is installed on the outer wall of the installation chamber 2b, the water inlet of the rotary drum 2 is formed at one end of the rotary drum 2, the water inlet is connected with the first connector 21 through the water inlet pipe 15, and one end of the connecting pipe 13 at the output end of the water pump 14 is connected with the first connector 21.

The filter device is not shown in the drawings, and an existing filter screen can be used. Valves are arranged on the second connector 22 and the first connector 21 or the water inlet pipe 15. In this embodiment, in the soaking process of gastrodia elata, the water outlet pipe 12 can be in butt joint with the second connector 22, the connecting pipe 13 is in butt joint with the first connector 21, muddy water can be discharged into the water tank 11 through the water outlet pipe 12, then the water pump 14 pumps filtered water into the rotary drum 2 through the first connector 21 and the water inlet pipe 15, and water in the water tank 11 enters the connecting pipe 13 after being intercepted and filtered by the filtering device. In this embodiment, the soaking water can be circulated to reduce the turbidity of the water, so that the cleaning effect can be improved when the rotation cleaning is performed after the soaking is completed.

The sealing door 20 and the drain port may be disposed opposite to each other, and the sealing door 20 is disposed at the top of the drum 2 and the drain port is disposed at the bottom when the drum 2 is not rotated, i.e., in the initial position (at the time of the immersing process). In the soaking process, the water outlet pipe 12 and the connecting pipe 13 can be respectively connected with the second connector 22 and the first connector 21, and after the soaking is finished, the water outlet pipe 12 and the connecting pipe 13 are detached.

As an implementation scenario, the water pump 14 may also be installed in the installation chamber 2b, so that the water inlet end of the water pump 14 is connected to the first connector 21 through a pipe, the water outlet end is connected to the water inlet pipe 15, and the end of the connecting pipe 13 away from the filtering device is connected to the first connector 21.

As an implementation scenario, in this scenario, a mesh plate is further disposed inside the drum 2, and the mesh plate 19 is disposed inside the drum 2 above the drain, where the mesh plate 19 divides the drum 2 into a soaking chamber 2a and a settling chamber 2c. When the partition plates 8 are provided inside the drum 2, the mesh plates 19 are provided between the two partition plates 8, and the gaps between the lower surfaces of the mesh plates 19 and the inner wall of the drum 2 form the settling chamber 2c, with the gaps between the mesh plates 19 and the columns 4. By the arrangement of the grid plate 19, sediment generated in the process of soaking the gastrodia elata can be precipitated in the precipitation chamber 2c.

Example 4

On the basis of the above embodiment, as shown in fig. 5, in this embodiment, one end of the second rotating shaft 7 extends into the drum 2, the second rotating shaft 7 has a hollow structure, that is, a water cavity is formed inside the second rotating shaft 7, a plurality of nozzles 16 communicated with the water cavity are installed on the outer wall of the second rotating shaft 7 located inside the drum 2, and one end of the second rotating shaft 7 located outside the drum 2 is connected with a liquid inlet pipe 18 through a joint 17. The joint 17 is an existing adapter, and the second shaft 7 is rotatable around the joint 17. The liquid inlet pipe 18 is communicated with the water cavity through the adapter 17, so that the water pump can pump water into the water cavity through the liquid inlet pipe 18, and the water is sprayed out of the spray head 16, and the water sprayed out of the spray head 16 can improve the cleaning effect of the gastrodia elata in the preliminary cleaning process and also can conveniently rinse sediment attached to the inner wall of the rotary drum 2, and of course, the whole cleaning of the gastrodia elata can be directly completed through repeated washing of the gastrodia elata.

The application method of the fresh gastrodia elata soaking device comprises the following steps:

step S1, soaking: fresh gastrodia elata is put into the rotary drum 2, the sealing door 20 is closed, soaking water is put into the fresh gastrodia elata, and the gastrodia elata is soaked for about 2-4 hours. In the soaking process, the bubble generating device 10 inputs gas into the cavity 90 of the shell 9 and then ejects the gas from the gas injection holes 80, so that the soaking water generates bubbles; the water outlet pipe 12 and the connecting pipe 13 are respectively connected with the second connector 22 and the first connector 21, muddy water in the rotary drum 2 is discharged into the water tank 11 through a gap of the water outlet pipe 12, then the water pump 14 pumps the filtered water into the rotary drum 2 through the first connector 21 and the water inlet pipe 15, and the water in the water tank 11 is intercepted and filtered by the filtering device and then enters the connecting pipe 13. During the soaking process, the sealing door 20 is positioned at the top of the drum 2 and the second connector 22 is positioned at the bottom.

Step S2, preliminary cleaning: after the soaking is completed, the water outlet pipe 12 and the connecting pipe 13 are disassembled, and the driving device 3 is started, so that the rotary drum 2 slowly rotates, and the brush 5 brushes the surface of the gastrodia elata in the rotating process.

In one embodiment, in step S2, the spray head 16 may spray water synchronously, that is: the water pump pumps the water source into the second rotating shaft 7 through the liquid inlet pipe 18 and the connector 17 and sprays the water from the spray head 16 to form a flushing effect on the gastrodia elata, so that a better cleaning effect is achieved.

In one embodiment, in step S2, the bubble generating device 10 may also be continuously operated to achieve a better cleaning effect.

And S3, after flushing, opening a valve at the water outlet to discharge water.

In an embodiment, the method may further include step S4, flushing: the water pump pumps the water source into the second rotating shaft 7 through the liquid inlet pipe 18 and the joint 17 and sprays the water from the spray head 16 to form the flushing of the gastrodia elata. Step S4 can be repeated for a plurality of times until the gastrodia elata is thoroughly cleaned. Of course, only the gastrodia elata can be initially cleaned.

When the gastrodia elata is taken out, the rotating drum 2 is reversed, namely the sealing door 20 is arranged at the bottom, and the sealing door 20 is opened to take out the gastrodia elata.

The details of this embodiment are not described in detail, and are known in the art.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that various changes and substitutions are possible within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A soaking device, comprising:

a support (1);

a rotary drum (2) mounted on the support frame (1), wherein the rotary drum (2) is provided with a sealing door (20), a water inlet and a water outlet;

the driving device (3) is in driving connection with the rotary drum (2) and can drive the rotary drum (2) to rotate;

wherein, a plurality of stand columns (4) are respectively arranged at two sides of the inside of the rotary drum (2), and a hairbrush (5) is arranged on the outer wall of the stand column (4).

2. The soaking device according to claim 1, wherein two ends of the rotary drum (2) are respectively in rotary connection with the support frame (1) through a first rotary shaft (6) and a second rotary shaft (7), and the first rotary shaft (6) is in driving connection with the driving device (3).

3. The soaking device according to claim 2, wherein a driven wheel (60) is mounted on the first rotating shaft (6) at one end of the rotating drum (2), the driving device (3) comprises a motor (30) and a driving wheel (31) connected to the power output end of the motor (30), and the driving wheel (31) is connected with the driven wheel (60) through a belt (32).

4. The soaking device according to claim 1, wherein the upright (4) comprises a long upright (4 a) and a short upright (4 b), the long upright (4 a) and the short upright (4 b) being arranged around the circumference of the drum (2) at intersecting intervals.

5. The soaking device according to claim 1, wherein a partition plate (8) is arranged at one or two ends of the interior of the rotary drum (2), the upright post (4) is arranged on the side wall of the partition plate (8), a shell (9) is arranged on the side wall of the partition plate (8) far away from the upright post (4), a plurality of air injection holes (80) communicated with the cavity (90) in the shell (9) are formed in the partition plate (8), a bubble generation device (10) is arranged on the outer side of the shell (9), and the output end of the bubble generation device (10) is communicated with the cavity (90).

6. The soaking device according to claim 5, characterized in that air injection holes (80) are formed between two adjacent upright posts (4).

7. The infusion device of claim 1, further comprising:

the water tank (11) is arranged outside the rotary drum (2);

one end of the water outlet pipe (12) is detachably connected with the water outlet, and the other end of the water outlet pipe is communicated with the water tank (11);

one end of the connecting pipe (13) is communicated with the water tank (11), and the other end of the connecting pipe is detachably connected with the water inlet of the rotary drum (2);

the water tank is characterized in that a filtering device is arranged at the joint of the connecting pipe (13) and the water tank (11), and a water pump (14) is arranged on the connecting pipe (13).

8. The soaking device according to claim 7, wherein a first connector (21) is mounted on the drum (2), the connecting pipe (13) is detachably connected with the first connector (21), a second connector (22) is mounted at the water outlet, and the water outlet pipe (12) is detachably connected with the second connector (22).

9. The soaking device according to claim 7, characterized in that a mesh plate (19) is arranged inside the drum (2) above the water outlet, a gap between the lower surface of the mesh plate (19) and the inner wall of the drum (2) forms a settling chamber (2 c), and a gap is arranged between the mesh plate (19) and the upright (4).

10. The soaking device according to claim 2, wherein one end of the second rotating shaft (7) extends to the inside of the rotating drum (2), a water cavity is formed in the second rotating shaft (7), a plurality of spray heads (16) communicated with the water cavity are mounted on the outer wall of the second rotating shaft (7) positioned in the rotating drum (2), and the second rotating shaft (7) positioned outside the rotating drum (2) is connected with a liquid inlet pipe (18) through a joint (17).