CN213261220U

CN213261220U - Squeezing dewatering device

Info

Publication number: CN213261220U
Application number: CN202021822102.9U
Authority: CN
Inventors: 杨雪峰; 唐立山; 汪勇辉; 王亚
Original assignee: Jiangsu Xinyouda Environmental Equipment Manufacturing Co ltd
Current assignee: Jiangsu Xinyouda Environmental Equipment Manufacturing Co ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-05-25
Anticipated expiration: 2030-08-26

Abstract

The application relates to a squeezing dewatering device, which relates to the technical field of solid-liquid separation treatment of garbage and comprises a feeding component, a squeezing component and a pre-tightening component which are sequentially arranged, wherein the squeezing component comprises a squeezing box and a squeezing cylinder connected in the squeezing box; the squeezing box is provided with a feed inlet and a discharge outlet, two ends of the squeezing cylinder are respectively communicated with the feed inlet and the discharge outlet, and the squeezing cylinder is provided with a plurality of filtrate holes; the feeding member is arranged on one side of the press box provided with the feeding hole and is used for feeding materials into the press cylinder; the pre-tightening component is arranged on one side of the squeezing box, which is provided with the discharge hole, and is used for plugging the discharge hole. The kitchen waste squeezing and separating device has the advantages that the grease and the water in the kitchen waste are conveniently squeezed and separated, and accordingly the kitchen waste is conveniently recycled.

Description

Squeezing dewatering device

Technical Field

The application relates to the field of solid-liquid separation treatment of garbage, in particular to a squeezing and dewatering device.

Background

At present, the kitchen waste refers to waste generated in activities such as daily life, food processing, food service, unit meal supply and the like of residents, and comprises abandoned vegetable leaves, leftovers, fruit peels, eggshells, tea leaves, bones and the like, and the kitchen waste is mainly sourced from household kitchens, restaurants, mess halls, markets and other industries related to food processing.

The kitchen waste has complex components, the internal water content of the vegetable leaves and vegetable uppers is high, the water absorbed by the rice steamed bread is more, and animal and vegetable oil also exists.

With respect to the related art in the above, the inventors consider that there are the following drawbacks: the waste of resources is easily caused by directly abandoning and burying the kitchen waste.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem that the direct abandonment of kitchen garbage causes the wasting of resources easily, this application provides a squeeze dewatering device.

The application provides a squeeze dewatering device adopts following technical scheme:

a squeezing dewatering device comprises a feeding component, a squeezing component and a pre-tightening component which are arranged in sequence, wherein the squeezing component comprises a squeezing box and a squeezing cylinder connected in the squeezing box; the squeezing box is provided with a feeding hole and a discharging hole, two ends of the squeezing cylinder are respectively communicated with the feeding hole and the discharging hole, and the squeezing cylinder is provided with a plurality of filtrate holes; the feeding member is arranged on one side of the press box provided with the feeding hole and is used for feeding materials into the press cylinder; the pre-tightening component is installed on one side of the squeezing box, where the discharge hole is formed, and is used for plugging the discharge hole.

By adopting the technical scheme, the squeezing box is used for fixing the positions of the feeding member, the squeezing cylinder and the pre-tightening member, the feeding member continuously transmits garbage or other materials needing squeezing and dewatering into the squeezing cylinder from the feeding hole, and the pre-tightening member seals the discharging hole. Because rubbish can't be followed feed inlet and discharge gate and discharged, along with in rubbish constantly piles up presses the section of thick bamboo, so rubbish can only extrude each other in order to compress self volume to make grease and waste water that is rich in the rubbish discharge and be in the press box from the filtrate hole, and then play the effect of squeezing the dehydration.

The waste water waste oil that squeezes out can be used for secondary operation and utilization, and the kitchen garbage after squeezing can be used for the fermentation to handle, squeezes the dehydration and handles and can provide better preliminary treatment effect for kitchen garbage's resource utilization to reduce the emergence of the extravagant phenomenon of kitchen garbage resource.

Preferably, the feeding member comprises a first driving assembly, a feeding box, a rotating shaft and a helical blade, and the feeding box is arranged on one side of the press box, which is provided with the feeding hole, and is communicated with the feeding hole; the rotating shaft is rotatably arranged in the feeding box and extends towards the feeding port; the first driving assembly is arranged on the feeding box and drives the rotating shaft to rotate; the spiral blade is spirally wound on the peripheral surface of the rotating shaft.

Through adopting above-mentioned technical scheme, first actuating mechanism drive axis of rotation rotates, and rubbish is poured into the feeding box after, is carried to squeezing in the section of thick bamboo by the continuous transition of helical blade around on the outer peripheral face of axis of rotation.

Preferably, the rotating shaft and the helical blade extend into the press cylinder.

Through adopting above-mentioned technical scheme, can make the rubbish that gets into the press cylinder earlier carried to the one side towards the discharge gate earlier to pile up from the one end of press cylinder towards the discharge gate to the one end towards the feed inlet gradually, thereby make rubbish can be comparatively even distribution in the press cylinder, reduce the condition emergence that the rubbish that gets into the press cylinder earlier blocks up the feed inlet.

Preferably, one end of the rotating shaft, which is far away from the first driving assembly, penetrates through the discharge hole; the pre-tightening component comprises a second driving assembly and a pre-tightening sleeve, and the pre-tightening sleeve is sleeved at one end, penetrating out of the discharge hole, of the rotating shaft; the second driving assembly is installed on the squeezing box and drives the pre-tightening sleeve to axially slide along the rotating shaft so as to plug the discharge hole.

Through adopting above-mentioned technical scheme, second drive assembly is used for driving pretension sleeve shutoff discharge gate, provides the pretightning force for compressing the rubbish in the press cylinder. Thereby the pretension sleeve slides along the axis of rotation axial to directional shutoff or open the discharge gate, can promote the accuracy of pretension sleeve counterpoint.

Preferably, one end of the pre-tightening sleeve facing the discharge port is provided with a conical surface capable of abutting against the discharge port.

Through adopting above-mentioned technical scheme, the setting of toper face can be the discharge gate of the different diameters of adaptation of great degree, promotes the telescopic suitability of pretension.

Preferably, the second driving assembly comprises a mounting bracket, a driving cylinder and a swing rod, and the mounting bracket is mounted on the press box; the swing rod is hinged with the mounting bracket; the driving cylinder is hinged with the mounting bracket, and a piston rod of the driving cylinder is hinged with one end of the oscillating bar; the mounting groove has been seted up to pretension sleeve circumference, the pendulum rod is kept away from the one end that drives actuating cylinder and is located the mounting groove.

Through adopting above-mentioned technical scheme, the installing support is used for the fixed position of driving actuating cylinder and pendulum rod, drives the one end that actuating cylinder promoted the pendulum rod and can make the other end of pendulum rod promote the shutoff discharge gate of pretension sleeve. Because the end of the swing rod, which is far away from the driving cylinder, is positioned in the mounting groove, when the piston rod of the driving cylinder resets, the pre-tightening sleeve can be driven to actively reset and the discharge hole is opened, so that the squeezed garbage can be smoothly discharged from the squeezing cylinder.

Preferably, one end of the swing rod, which is positioned in the mounting groove, is rotatably connected with a roller.

Through adopting above-mentioned technical scheme, the setting up of gyro wheel makes pendulum rod and pretension sleeve rolling friction to reduce the wearing and tearing of pendulum rod and pretension sleeve, and can indirectly promote pretension mechanism's life.

Preferably, a discharging member is arranged on one side of the squeezing box facing the discharging port, and the discharging member comprises a discharging box and a conveying belt; the discharge box is connected with the squeezing box, and the discharge port is communicated with the discharge box; go out workbin bottom fretwork setting, the drive belt is located a workbin below.

Through adopting above-mentioned technical scheme, rubbish can pile up at ejection of compact case after the discharge gate is discharged, reduces the scattered condition of rubbish and takes place for can be convenient for by the centralized processing by the discharged rubbish. The conveyer belt starts and can convey away the rubbish in the play workbin in turn to be convenient for shift the rubbish of piling up in the play workbin, and then be convenient for press the next ejection of compact of section of thick bamboo.

Preferably, a cleaning member for cleaning the inside of the press box is connected to the press box.

Through adopting above-mentioned technical scheme, the setting of washing the component can be convenient for wash inside the press box and press the section of thick bamboo to reduce the corrosion that the residue of waste water, grease residue and rubbish residue led to the fact press box and press the section of thick bamboo, and then promote the life who presses the component.

Preferably, the cleaning member comprises a cleaning pipe and a plurality of spray heads, and one side of the cleaning pipe extending into the squeezing box is arranged along the axial extension of the squeezing cylinder; the spray head is positioned inside the squeezing box and communicated with the cleaning pipe.

Through adopting above-mentioned technical scheme, can be great degree wash press box inside and press the cylinder, promote cleaning efficiency and cleaning performance.

Drawings

Fig. 1 is a schematic view of the overall structure of a press dewatering device according to an embodiment of the present application.

Fig. 2 is an exploded view of the pressing member and the cleaning member according to the embodiment of the present application.

Description of reference numerals: 1. a feed member; 11. a feeding box; 111. an observation door; 12. a rotating shaft; 121. a helical blade; 13. a motor; 131. a speed reducer; 2. a pressing member; 21. a press box; 211. a feed inlet; 212. a discharge port; 213. a wastewater bin; 214. a waste pipe; 22. a press cylinder; 23. a first reinforcing plate; 231. a second reinforcing plate; 3. a discharge member; 31. a discharging box; 311. a conveyor belt; 32. a pretensioning member; 321. mounting a bracket; 322. a driving cylinder; 3221. a mounting seat; 3222. installing a sleeve; 3223. installing a shaft; 323. a push rod; 324. rotating the rod; 325. a swing rod; 3251. a roller; 326. pre-tightening the sleeve; 3261. a conical surface; 3262. mounting grooves; 4. cleaning the component; 41. cleaning the tube; 42. a spray head; 5. and a frame.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses a squeezing and dewatering device. Referring to fig. 1, the press dewatering device comprises a frame 5, a feeding member 1, a pressing member 2 and a discharging member 3 which are sequentially connected along the garbage feeding direction, a pre-tightening member 32 positioned at the discharging member 3 and a cleaning member 4 positioned at the pressing member 2. The feeding component 1, the pressing component 2 and the discharging component 3 are arranged on the frame 5, the pre-tightening component 32 is arranged on the pressing component 2, and the cleaning component 4 is led into the pressing component 2. Firstly, the pre-tightening component 32 pre-tightens the pressing component 2, and then the kitchen waste enters the pressing component 2 through the feeding component 1 to be pressed and dehydrated, wherein the pressing time is 3-5 minutes. Then the pre-tightening component 32 is opened, water and grease in the kitchen waste are left in the squeezing component 2, and the dehydrated kitchen waste is discharged into the discharging component 3. Finally the cleaning member 4 starts and cleans the press member 2.

Referring to fig. 1, the feeding member 1 includes a feeding box 11, a rotating shaft 12, a spiral blade 121 spirally wound around the outer circumferential surface of the rotating shaft 12, the feeding box 11 is fixed on the frame 5, the rotating shaft 12 is rotatably disposed in the feeding box 11 and extends toward the pressing member 2, and a first driving assembly is mounted on one side of the feeding box 11 away from the pressing member 2. The first driving assembly comprises a speed reducer 131 and a motor 13, the speed reducer 131 is fixed on the feeding box 11 through bolts, and an output shaft of the speed reducer 131 is connected with the rotating shaft 12; the motor 13 is mounted on the decelerator 131 and an output shaft of the motor 13 is connected to an output shaft of the decelerator 131. One side opening setting that the feed box 11 is far away from frame 5 is convenient for get into by kibbling kitchen garbage, and motor 13 passes through reduction gear 131 drive axis of rotation 12 and rotates afterwards, and helical blade 121 rotatory along with axis of rotation 12 will fall into the kitchen garbage in the feed box 11 and send into in squeezing component 2.

An observation hole is formed in one side of the feeding box 11, an observation door 111 is installed at the position of the observation hole for plugging, and when the kitchen waste continuously feeds into the feeding box 11, the observation door 111 can be opened to observe the feeding condition in the feeding box 11 through the observation hole.

Referring to fig. 1 and 2, the press member 2 includes a press box 21, a press cylinder 22 connected inside the press box 21, and a reinforcement assembly at an outer circumferential surface of the press cylinder 22, the press box 21 is mounted on the frame 5, a feed inlet 211 and a discharge outlet 212 are provided on the press box 21, and the feed box 11 is connected to the press box 21 and communicates through the feed inlet 211. The two ends of the press cylinder 22 are respectively communicated with the feed inlet 211 and the discharge outlet 212, and filtrate holes are uniformly distributed on the cylinder wall of the press cylinder 22. A waste water bin 213 is arranged below the press cylinder 22 in the press box 21, so that the water and grease squeezed in the kitchen waste fall into the waste water bin 213 through filtrate holes of the press cylinder 22. The bottom of the squeezing box 21 is connected with a waste water pipe 214, waste water in the waste water bin 213 can be extracted into the oil-water separator through the waste water pipe 214 for treatment, and the utilization rate of garbage resources is improved.

The reinforcing assembly comprises a first reinforcing plate 23 arranged along the axial direction of the press cylinder 22 and a second reinforcing plate 231 arranged along the circumferential direction of the press cylinder 22, the first reinforcing plate 23 is uniformly distributed along the circumferential direction of the press cylinder 22, and the second reinforcing plate 231 is uniformly distributed along the axial direction of the press cylinder 22. The first and second reinforcing plates 23 and 231 are welded and hoop the press cylinder 22, thereby enhancing the strength of the press cylinder 22 and prolonging the service life of the press cylinder 22.

Referring to fig. 1, the discharging member 3 includes a discharging box 31 installed on the frame 5, and a conveyor belt 311 located below the discharging box 31, the discharging box 31 being connected to the press box 21 and connected through a discharging port 212. Go out workbin 31 bottom fretwork setting, fall into the kitchen garbage in the workbin 31 from discharge gate 212 and fall on conveyer belt 311 and pile up in going out workbin 31. The conveyer belt 311 starts and can transport away kitchen garbage in batches, and the automatic clearance of being convenient for is piled up the kitchen garbage in ejection of compact case 31, practices thrift the human cost. The solid kitchen waste conveyed away can be used for fermentation treatment, and the utilization rate of waste resources is improved.

Referring to fig. 1 and 2, the rotating shaft 12 extends to a side wall of the discharging box 31 away from the press box 21 and is rotatably connected with the side wall of the discharging box 31 through a bearing, and the helical blade 121 on the outer circumferential surface of the rotating shaft 12 extends to the discharging port 212. The pre-tightening member 32 comprises a pre-tightening sleeve 326 sleeved at one end of the rotating shaft 12 penetrating through the discharge port 212 and a second driving assembly installed on the press box 21, wherein a tapered surface 3261 capable of abutting against the discharge port 212 is arranged at one end of the pre-tightening sleeve 326 facing the discharge port 212, and the second driving assembly drives the pre-tightening sleeve 326 to axially slide along the rotating shaft 12 so as to seal the discharge port 212 through the tapered surface 3261.

Referring to fig. 1, the second driving assembly includes a mounting bracket 321, a mounting seat 3221, a driving cylinder 322, a push rod 323, a rotating rod 324, a swing rod 325, and a roller 3251. The mounting bracket 321 is two support plates arranged oppositely, and the mounting bracket 321 spans one end of the discharge box 31 away from the transmission belt, and one end of the discharge box extends towards the top of the press box 21. Each support plate is fixedly provided with one mounting seat 3221 at the top of the press box 21 through bolts, the driving cylinder 322 is arranged between the two mounting seats 3221, the circumferential direction of the driving cylinder is sleeved with a mounting sleeve 3222, one side of the mounting sleeve 3222 facing the mounting seat 3221 is connected with a mounting shaft 3223, and the mounting shaft 3223 is inserted into the mounting seat 3221 and is rotatably connected with the mounting seat 3221.

Referring to fig. 1 and 2, an output shaft of the driving cylinder 322 is connected to a middle portion of a push rod 323, and both ends of the push rod 323 are respectively hinged to a swing rod 325. The rotating rod 324 is installed on one side of the mounting bracket 321 far away from the push rod 323 and is located between two swing rods 325, and the middle parts of the swing rods 325 are hinged with the end parts of the rotating rod 324. The swing link 325 is located at both sides of the rotating shaft 12, and one end of the swing link 325 away from the push rod 323 is rotatably connected with the roller 3251. The pre-tightening sleeve 326 is circumferentially provided with a mounting groove 3262, and the roller 3251 is positioned in the mounting groove 3262.

The piston rod of the driving cylinder 322 pushes the push rod 323, the push rod 323 enables one end of the swing rod 325 to swing towards one side far away from the press box 21, the rotating rod 324 serves as a rotating center, one end, located in the installation groove 3262, of the swing rod 325 abuts against the pre-tightening sleeve 326 through the roller 3251, the pre-tightening sleeve 326 slides towards the discharge port 212 along the axial direction of the rotating shaft 12, and the discharge port 212 is blocked when the conical surface 3261 abuts against the discharge port 212. The opening and closing time is set to be 3-5 minutes according to the difference of materials, when the materials are kitchen waste, the pre-tightening time of the pre-tightening sleeve 326 can be set to be 5 minutes and the time of disengaging from the discharge hole 212 can be set to be 3 minutes by controlling the extension and retraction time of the piston rod of the driving cylinder 322.

Referring to fig. 1 and 2, the washing member 4 includes a washing pipe 41 and a plurality of spray heads 42, one end of the washing pipe 41 is connected to a water source, and the other end thereof extends into the interior of the press box 21 and is disposed to extend in the axial direction of the press cylinder 22. The nozzles 42 are located in the squeezing box 21 and are uniformly distributed on the cleaning pipe 41, and the nozzles 42 are communicated with the cleaning pipe 41. After pressing is completed, a cleaning liquid or clean water for cleaning the inside of the press box 21 and the press cylinder 22 may be introduced into the cleaning pipe 41. To improve the cleaning effect and efficiency, the spray head 42 may employ a high pressure spray head 42.

The implementation principle of the squeezing dewatering device in the embodiment of the application is as follows: first, the driving cylinder 322 is started, a piston rod of the driving cylinder 322 simultaneously pushes the two swing rods 325 to swing through the push rod 323, and the swing rods 325 push the pre-tightening sleeve 326 towards the discharge port 212 until the conical surface 3261 blocks the discharge port 212. Then, the motor 13 is started to rotate the rotary shaft 12 and the helical blade 121 in unison with the output shaft of the speed reducer 131. Then, the kitchen waste or other materials are fed into the opening of the feeding box 11 continuously, and the rotating spiral blade 121 feeds the kitchen waste or other materials into the press cylinder 22 through the feeding hole 211.

When the kitchen waste is conveyed to the discharge hole 212, the kitchen waste is blocked by the pre-tightening sleeve 326 and is accumulated in the press cylinder 22, and the kitchen waste is continuously fed into the press cylinder 22 along with the increasing accumulation of the kitchen waste in the press cylinder 22 and the continuous feeding of the feed inlet 211, so that the kitchen waste can only be mutually squeezed to reduce the volume of the kitchen waste, and the squeezing effect is achieved. The reinforcement assembly may reduce deformation of the press cylinder 22 during pressing. The grease and water separated by squeezing enter the waste water bin 213 through the filtrate hole, and the grease and water in the waste water bin 213 need to be discharged through the waste water pipe 214 before the liquid surface of the waste water bin 213 contacts the press cylinder 22.

After the driving cylinder 322 is set to push the pre-tightening sleeve 326 to be pre-tightened for 5 minutes, the driving cylinder 322 is started again and retracts the piston rod, so that the pre-tightening sleeve 326 is separated from the sealing of the discharge hole 212, and the kitchen waste squeezed in the press cylinder 22 is discharged from the discharge hole 212 under the conveying of the helical blade 121 and falls on the conveyor belt 311 at the discharge box 31. The conveyer belt 311 starts, receives the separation of ejection of compact case 31 lateral wall, and conveyer belt 311 can only convey away kitchen garbage in batches. After setting the discharge for 3 minutes, the driving cylinder 322 is started again to make the pre-tightening sleeve 326 block the discharge hole 212. The kitchen waste can be continuously squeezed by repeating the steps.

During the discharging process, the feeding can be continuously carried out on the feeding box 11, and the feeding can also be suspended. The former squeezes efficiency higher, and the latter squeezes the effect better, can be according to the actual use operating mode free choice whether last pay-off.

In order to reduce the corrosion of the press box 21 and the press cylinder 22 caused by the residue of the waste water, the grease residue and the garbage residue, the pressing is stopped and the cleaning member 4 is started every other week or two weeks, the inner wall of the press box 21 and the press cylinder 22 are washed, and the washed waste water can fall into the waste water bin 213.

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

Claims

1. A squeezing dewatering device is characterized in that: the pressing device comprises a feeding component (1), a pressing component (2) and a pre-tightening component (32) which are sequentially arranged, wherein the pressing component (2) comprises a pressing box (21) and a pressing cylinder (22) connected in the pressing box (21); the squeezing box (21) is provided with a feeding hole (211) and a discharging hole (212), two ends of the squeezing cylinder (22) are respectively communicated with the feeding hole (211) and the discharging hole (212), and the squeezing cylinder (22) is provided with a plurality of filtrate holes; the feeding member (1) is arranged on one side of the press box (21) provided with the feeding hole (211) and is used for feeding materials into the press cylinder (22); the pre-tightening component (32) is arranged on one side of the squeezing box (21) where the discharge hole (212) is formed and used for sealing the discharge hole (212).

2. A press dewatering apparatus as defined in claim 1, further comprising: the feeding member (1) comprises a first driving assembly, a feeding box (11), a rotating shaft (12) and a spiral blade (121), wherein the feeding box (11) is arranged on one side of the pressing box (21) provided with a feeding hole (211) and is communicated with the feeding hole (211); the rotating shaft (12) is rotatably arranged in the feeding box (11) and extends towards the feeding hole (211); the first driving assembly is arranged on the feeding box (11) and drives the rotating shaft (12) to rotate; the helical blade (121) is spirally wound on the outer peripheral surface of the rotating shaft (12).

3. A press dewatering apparatus as defined in claim 2, further comprising: the rotating shaft (12) and the helical blades (121) both extend into the press cylinder (22).

4. A press dewatering apparatus as claimed in claim 2 or 3, wherein: one end of the rotating shaft (12) far away from the first driving component penetrates through the discharge hole (212); the pre-tightening component (32) comprises a second driving assembly and a pre-tightening sleeve (326), and the pre-tightening sleeve (326) is sleeved at one end, penetrating out of the discharge hole (212), of the rotating shaft (12); the second driving assembly is arranged on the press box (21) and drives the pre-tightening sleeve (326) to axially slide along the rotating shaft (12) so as to seal the discharge hole (212).

5. A press dewatering apparatus as defined in claim 4, further comprising: one end, facing the discharge hole (212), of the pre-tightening sleeve (326) is provided with a conical surface (3261) capable of abutting against the discharge hole (212).

6. A press dewatering apparatus as defined in claim 4, further comprising: the second driving assembly comprises a mounting bracket (321), a driving air cylinder (322) and a swing rod (325), and the mounting bracket (321) is mounted on the press box (21); the swing rod (325) is hinged with the mounting bracket (321); the driving cylinder (322) is hinged with the mounting bracket (321), and a piston rod of the driving cylinder (322) is hinged with one end of the swing rod (325); an installation groove (3262) is formed in the circumferential direction of the pre-tightening sleeve (326), and one end, far away from the driving cylinder (322), of the swing rod (325) is located in the installation groove (3262).

7. A press dewatering apparatus as defined in claim 6, further comprising: one end of the swing rod (325) positioned in the mounting groove (3262) is rotatably connected with a roller (3251).

8. A press dewatering apparatus as defined in claim 1, further comprising: a discharging member (3) is arranged on one side, facing the discharging port (212), of the squeezing box (21), and the discharging member (3) comprises a discharging box (31) and a conveying belt (311); the discharge box (31) is connected with the squeezing box (21), and the discharge hole (212) is communicated with the discharge box (31); go out workbin (31) bottom fretwork setting, conveyer belt (311) are located ejection of compact case (31) below.

9. A press dewatering apparatus as defined in claim 1, further comprising: the press box (21) is connected with a cleaning component (4) for cleaning the interior of the press box (21).

10. A press dewatering apparatus as defined in claim 9, wherein: the cleaning member (4) comprises a cleaning pipe (41) and a plurality of spray heads (42), and one side of the cleaning pipe (41) extending into the squeezing box (21) is arranged along the axial extension of the squeezing cylinder (22); the spray head (42) is positioned inside the press box (21) and is communicated with the cleaning pipe (41).