A white oil recovery device

Abstract

This invention relates to the field of white oil recovery technology and proposes a white oil recovery device, including a housing, rotating discs, auxiliary rollers, a white oil adsorption section, a rotating section, a pipeline assembly, an oil suction component, and an adsorption and cleaning section. The housing has an outlet and an inlet at its front and rear ends, respectively. Two rotating discs are symmetrically arranged through the housing at both ends and rotate in coordination with it. Two auxiliary rollers are symmetrically arranged at the inlet of the housing. The white oil adsorption section is installed between the rotating discs, and the rotating section is located at one end of the housing. The pipeline assembly is installed at the end of the white oil adsorption section away from the rotating section. The oil suction component includes an oil suction section and a buffer section. The oil suction section is installed on the pipeline assembly, and the buffer section is installed inside the oil suction section. The adsorption and cleaning section is installed through the rotating disc near the rotating section. This technical solution solves the problems of inconvenient white oil recovery and low recovery efficiency in existing technologies.

Description

Technical Field

[0001] This invention relates to the field of white oil recovery technology, specifically, to a white oil recovery device. Background Technology

[0002] When manufacturing lithium battery separators, a large amount of white oil is separated during the cooling of the casting. If the white oil is not cleaned in time, it will fall into the double-stretch oven during the double-stretch process, resulting in direct loss of the white oil.

[0003] In existing technologies, white oil is typically recycled by adding a flocculant solution to the white oil generated during the biaxial stretching process. While this method can remove white oil, some of it mixes with the flocculant, making it difficult to recover. Furthermore, the short reaction time between the flocculant and white oil during white oil removal means that the white oil cannot be completely removed by the flocculant. The remaining white oil stays in the oven, generating oil fumes that accumulate at the top of the oven and drip onto the membrane, creating defects. Unremoved white oil also adheres to the lithium battery separator, affecting heat dissipation and reducing battery life. Additionally, white oil at high temperatures can damage the environment. Therefore, we propose a white oil recycling device. Summary of the Invention

[0004] This invention proposes a white oil recovery device, which solves the problems of inconvenient white oil recovery and low recovery efficiency in related technologies.

[0005] The technical solution of the present invention is as follows: A white oil recovery device, comprising:

[0006] The housing has an outlet and an inlet at its front and rear ends, respectively;

[0007] Two rotating disks are provided, which are symmetrically disposed at both ends inside the housing and rotate in conjunction with the housing.

[0008] Auxiliary rollers, two of which are symmetrically rotated at the inlet of the housing;

[0009] White oil adsorption section, wherein the white oil adsorption section is installed between the rotating disks;

[0010] A rotating part is disposed at one end of the housing;

[0011] A pipe assembly, wherein the pipe assembly is installed at the end of the white oil adsorption section away from the rotating section;

[0012] An oil-absorbing assembly, comprising an oil-absorbing section and a buffer section, wherein the oil-absorbing section is installed on the pipe assembly and the buffer section is installed inside the oil-absorbing section;

[0013] An adsorption cleaning section is mounted through the rotating disk near the rotating part.

[0014] Based on the aforementioned scheme, the white oil adsorption section includes:

[0015] The vacuum adsorption roller is provided in two, and the vacuum adsorption roller is symmetrically and rotatably mounted between the two rotating disks. The vacuum adsorption roller has a hollow structure and many dense pinholes are opened on its surface.

[0016] Oil-absorbing cotton is installed inside each of the vacuum adsorption rollers.

[0017] Based on the aforementioned solution, the rotating part includes:

[0018] Driven gear, the driven gear is fixedly mounted on the rotating disk on one side of the housing;

[0019] The motor is mounted on the upper part of the housing;

[0020] A driving gear is mounted on the output end of the motor and meshes with the driven gear.

[0021] Based on the aforementioned scheme, the pipeline assembly includes:

[0022] A three-way pipe is installed through the rotating disk on the side away from the driven gear, and the three-way pipe is connected to the end of the vacuum adsorption roller away from the driven gear.

[0023] A rotating tube is installed at the end of the three-way tube away from the vacuum adsorption roller, and the rotating tube is rotatably and sealed thereon.

[0024] A connecting pipe is connected to the rotating pipe, and the end of the connecting pipe is connected to the buffer section.

[0025] Based on the aforementioned solution, the buffer section includes:

[0026] A sealed buffer tank is installed at the end of the connecting pipe and is in communication with the connecting pipe;

[0027] An oil-separating membrane is fixedly installed on the upper part of the sealed buffer tank.

[0028] Based on the aforementioned solution, the oil-absorbing part includes:

[0029] A control valve is installed on the connecting pipe near the sealed buffer tank;

[0030] An air extraction pipe, one end of which passes through and is sealed to the upper part of the sealed buffer tank;

[0031] A vacuum pump, which is connected to the other end of the suction pipe.

[0032] Based on the aforementioned solution, the adsorption cleaning unit includes:

[0033] A fixing block is slidably provided on the side of each vacuum adsorption roller near the driven gear. The fixing block is disposed through the rotating disk and rotates with the rotating disk. The fixing block passes through the driven gear and is connected to the driven gear by threads.

[0034] Each of the fixed blocks has a handle attached to the end away from the housing.

[0035] Based on the aforementioned solution, a secondary cleaning unit is also included, which comprises:

[0036] An oil reservoir is installed inside the housing at the outlet, and a through groove is also provided at the position corresponding to the outlet of the housing.

[0037] Rubber scraper one, the rubber scraper one is disposed at the top inside the oil storage tank;

[0038] Rubber scraper 2, wherein the rubber scraper 2 is disposed inside the oil storage tank;

[0039] A protective cover is disposed inside the outlets and inlets opened at the front and rear ends of the housing.

[0040] The working principle and beneficial effects of this invention are as follows:

[0041] 1. In this invention, a motor drives a drive gear to rotate, which in turn drives a rotating disk to rotate via a driven gear. This rotating disk, in turn, drives a vacuum adsorption roller to rotate. When the roller rotates to a certain angle, the cast sheet adheres to the vacuum adsorption roller. Then, the motor is turned off and locked to fix the position of the vacuum adsorption roller, allowing the adsorption of white oil from the cast sheet to begin. Through the meshing between the drive gear and the driven gear, the vacuum adsorption roller can rotate at any angle, thereby increasing the contact area between the vacuum adsorption roller and the cast sheet and improving the adsorption capacity of white oil from the cast sheet.

[0042] 2. In this invention, the oil-absorbing cotton can be removed for cleaning or replacement by removing the fixing block, and the vacuum adsorption roller can be cleaned at the same time. After cleaning, the oil-absorbing cotton is reinstalled into the vacuum adsorption roller, and then the fixing block is placed into the rotating disk. While the vacuum adsorption roller and oil-absorbing cotton are being cleaned or replaced, the white oil on the casting sheet can also be cleaned by the cooperation between rubber scraper one and rubber scraper two. There is no need to stop the casting sheet from moving and wait for the vacuum adsorption roller and oil-absorbing cotton to be cleaned or replaced. Furthermore, a large amount of white oil is adsorbed and recovered before the casting sheet enters the double-drawing process, which improves the efficiency of white oil recovery.

[0043] 3. In this invention, by using two symmetrically rotating auxiliary rollers at the inlet of the housing, when the white oil on the casting sheet is absorbed by the oil-absorbing cotton inside the vacuum adsorption roller through the pinholes on the vacuum adsorption roller, the casting sheet is kept from contacting the protective sleeve at the inlet, thus reducing diaphragm defects caused by wear.

[0044] 4. In this invention, the vacuum pump removes air from the sealed buffer tank through the suction pipe, creating a vacuum negative pressure inside the sealed buffer tank. Then, the control valve is slowly opened, and the degree of opening of the control valve is adjusted by observing the vacuum pressure inside the sealed buffer tank. When the vacuum pressure inside the sealed buffer tank reaches an equilibrium point, the white oil on the casting sheet can be sucked into the sealed buffer tank by the vacuum pump through the cooperation between the vacuum adsorption roller, the oil-absorbing cotton, and the pipeline assembly. The oil-separating membrane ensures that the white oil sucked into the sealed buffer tank will not enter the vacuum pump. Attached Figure Description

[0045] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0046] Figure 1 This is a schematic cross-sectional view of the overall structure of the present invention;

[0047] Figure 2 This is a cross-sectional view of the overall structure of the present invention from another angle;

[0048] Figure 3 This is a cross-sectional view of the rotating part and the adsorption cleaning part in this invention.

[0049] Figure 4 This is a cross-sectional view of the structure in which the housing, auxiliary roller, and secondary cleaning unit cooperate in this invention.

[0050] Figure 5 For the present invention Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;

[0051] Figure 6 For the present invention Figure 4 A magnified schematic diagram of the local structure at point B;

[0052] Figure 7 For the present invention Figure 4 A magnified schematic diagram of the structure at point C.

[0053] The labels in the diagram represent: 1. Machine casing; 2. Rotating disc; 3. Auxiliary roller; 4. Vacuum adsorption roller; 5. Oil-absorbing cotton; 6. Driven gear; 7. Motor; 8. Drive gear; 9. T-connector; 10. Rotating pipe; 11. Connecting pipe; 12. Sealed buffer tank; 13. Oil separator; 14. Control valve; 15. Suction pipe; 16. Vacuum pump; 17. Fixing block; 18. Handle; 19. Oil reservoir; 20. Rubber scraper one; 21. Rubber scraper two; 22. Protective cover. Detailed Implementation

[0054] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0055] like Figures 1 to 7 As shown, this embodiment proposes a white oil recovery device, including a housing 1, a rotating disk 2, auxiliary rollers 3, a white oil adsorption section, a rotating section, a pipeline assembly, an oil suction component, and an adsorption and cleaning section. The housing 1 has an outlet and an inlet at its front and rear ends, respectively. Two rotating disks 2 are provided, symmetrically arranged through both ends inside the housing 1, and rotatingly engaged with the housing 1. Two auxiliary rollers 3 are provided, symmetrically rotating at the inlet of the housing 1. The white oil adsorption section is installed between the rotating disks 2, and includes a vacuum adsorption roller 4 and oil-absorbing cotton 5. Two vacuum adsorption rollers 4 are provided, symmetrically and rotatingly installed between the two rotating disks 2. The vacuum adsorption rollers 4 have a hollow structure, with many densely packed pinholes on their surface, and each vacuum adsorption roller 4 contains oil-absorbing cotton 5.

[0056] Specifically, when it is necessary to absorb white oil from the casting sheet, the casting sheet first enters the housing 1 through the inlet, passes between the two vacuum adsorption rollers 4, and then exits the housing 1 through the outlet. Then, the rotating disk 2 is adjusted to rotate the vacuum adsorption rollers 4 to the set position, so that the two vacuum adsorption rollers 4 are in contact with the upper and lower surfaces of the casting sheet. With the cooperation of the auxiliary roller 3, the casting sheet will not rub against the inlet under the action of the vacuum adsorption rollers 4, thus affecting the surface quality of the casting sheet. As the casting sheet moves continuously, it drives the vacuum adsorption rollers 4 to rotate continuously, so that the white oil on the casting sheet is adsorbed by the oil-absorbing cotton 5 inside the vacuum adsorption rollers 4 through the pinholes opened on the vacuum adsorption rollers 4. Then, the oil suction assembly is activated. Through the cooperation of the oil suction assembly and the pipeline assembly, the white oil in the vacuum rollers is sucked out.

[0057] The rotating part is located at one end of the housing 1. The rotating part includes a driven gear 6, a motor 7 and a driving gear 8. The driven gear 6 is fixedly mounted on a rotating disk 2 on one side of the housing 1. The motor 7 is mounted on the upper part of the housing 1. The driving gear 8 is mounted on the output end of the motor 7 and meshes with the driven gear 6.

[0058] Specifically, after the cast sheet enters the machine housing 1 through the inlet, when it needs to be adsorbed by the vacuum adsorption roller 4, the motor 7 is started. The motor 7 drives the drive gear 8 to rotate, which in turn drives the driven gear 6 to rotate. The driven gear 6 then drives the rotating disk 2 to rotate, which in turn drives the vacuum adsorption roller 4 to rotate. When the roller reaches a certain angle, the cast sheet adheres to the vacuum adsorption roller 4. Then, the motor 7 is turned off and locked, thus fixing the position of the vacuum adsorption roller 4. Adsorption of white oil on the cast sheet can then begin. Through the cooperation between the drive gear 8 and the driven gear 6, the vacuum adsorption roller 4 can rotate at any angle, thereby increasing the contact area between the vacuum adsorption roller 4 and the cast sheet and improving the adsorption capacity of white oil on the cast sheet.

[0059] The pipe assembly is installed at the end of the white oil adsorption section away from the rotating part. The pipe assembly includes a three-way pipe 9, a rotating pipe 10, and a connecting pipe 11. The three-way pipe 9 is installed through the rotating disk 2 on the side away from the driven gear 6, and the three-way pipe 9 is connected to the end of the vacuum adsorption roller 4 away from the driven gear 6. The rotating pipe 10 is rotatably and sealed at the end of the three-way pipe 9 away from the vacuum adsorption roller 4. The connecting pipe 11 is connected to the rotating pipe 10, and the end of the connecting pipe 11 is connected to the buffer section.

[0060] Specifically, while the rotating disk 2 is rotating, it drives the three-way pipe 9 to rotate. Through the cooperation between the rotating pipe 10 at the end of the three-way pipe 9 away from the vacuum adsorption roller 4 and the three-way pipe 9, the three-way pipe 9 can rotate freely inside the rotating pipe 10, reducing the impact of the rotation of the three-way pipe 9 on the stability of the connecting pipe 11.

[0061] The oil suction assembly includes an oil suction section and a buffer section. The oil suction section is installed on the pipeline assembly, and the buffer section is installed inside the oil suction section. The buffer section includes a sealed buffer tank 12 and an oil separator 13. The sealed buffer tank 12 is installed at the end of the connecting pipe 11 and is connected to the connecting pipe 11. The oil separator 13 is fixedly installed on the upper part of the sealed buffer tank 12. The oil suction section includes a control valve 14, a suction pipe 15, and a vacuum pump 16. The control valve 14 is installed on the connecting pipe 11 near the sealed buffer tank 12. One end of the suction pipe 15 passes through and is sealed to the upper part of the sealed buffer tank 12. The vacuum pump 16 is connected to the other end of the suction pipe 15.

[0062] Specifically, when adsorbing the white oil on the casting, the vacuum pump 16 is turned on. The vacuum pump 16 draws out the air in the sealed buffer tank 12 through the air extraction pipe 15, so that the inside of the sealed buffer tank 12 is in a vacuum negative pressure state. Then, the control valve 14 is slowly opened. The degree of opening of the control valve 14 is adjusted by observing the vacuum pressure in the sealed buffer tank 12. When the vacuum pressure in the sealed buffer tank 12 reaches an equilibrium point, the white oil on the casting can be sucked into the sealed buffer tank 12 by the vacuum pump 16 through the cooperation between the vacuum adsorption roller 4, the oil-absorbing cotton 5 and the pipeline assembly. The oil separator 13 ensures that the white oil sucked into the sealed buffer tank 12 will not enter the vacuum pump 16.

[0063] The adsorption cleaning section is installed on the rotating disk 2 near the rotating part. The adsorption cleaning section includes a fixing block 17 and a handle 18. Each vacuum adsorption roller 4 has a fixing block 17 slidably arranged on the side near the driven gear 6. The fixing block 17 is installed on the rotating disk 2 and rotates with the rotating disk 2. The fixing block 17 passes through the driven gear 6 and is connected to the driven gear 6 by threads. Each fixing block 17 has a handle 18 connected to the end away from the housing 1.

[0064] Specifically, after the adsorption is complete, the vacuum adsorption roller 4 and the oil-absorbing cotton 5 need to be cleaned or replaced. Since the fixed block 17 is threadedly connected to the driven gear 6, hold the handle 18 and rotate the fixed block 17 through the handle 18. The fixed block 17 slides inside the rotating disk 2 and the side of the vacuum adsorption roller 4 near the driven gear 6. Remove the fixed block 17, and the oil-absorbing cotton 5 can be taken out for cleaning or replacement. The vacuum adsorption roller 4 is also cleaned. After cleaning, the oil-absorbing cotton 5 is reinstalled into the vacuum adsorption roller 4, and then the fixed block 17 is placed into the rotating disk 2 and then put back into its original position.

[0065] The above also includes a secondary cleaning unit, which includes an oil tank 19, a rubber scraper 20, a rubber scraper 21, and a protective sleeve 22. The oil tank 19 is installed at the outlet inside the housing 1. A through groove is also provided at the position corresponding to the outlet of the housing 1. The rubber scraper 20 is located at the top inside the oil tank 19, and the rubber scraper 21 is located inside the oil tank 19. The protective sleeve 22 is located inside the outlet and inlet opened at the front and rear ends of the housing 1.

[0066] Specifically, when the vacuum adsorption roller 4 and oil-absorbing cotton 5 adsorb the white oil on the casting sheet, the white oil that was not adsorbed by the vacuum adsorption roller 4 and oil-absorbing cotton 5 is scraped off by the cooperation between rubber scraper 1 20 and rubber scraper 21. The scraped-off white oil will enter the oil storage tank 19 for storage. When cleaning or replacing the vacuum adsorption roller 4 and oil-absorbing cotton 5, the white oil on the casting sheet needs to be cleaned by the cooperation between rubber scraper 1 20 and rubber scraper 21. There is no need to stop the casting sheet from moving and wait for the vacuum adsorption roller 4 and oil-absorbing cotton 5 to be cleaned or replaced, which improves the efficiency of white oil recovery.

[0067] In summary, when cleaning the white oil on the casting sheet, the casting sheet first enters the machine housing 1 through the inlet, passes between the two vacuum adsorption rollers 4, and then exits the machine housing 1 through the outlet. Then, the motor 7 is started, which drives the drive gear 8 to rotate. The rotation of the drive gear 8 drives the driven gear 6 to rotate, which in turn drives the rotating disk 2 to rotate. This rotating disk 2 drives the vacuum adsorption rollers 4 to rotate. While the rotating disk 2 is rotating, it also drives the three-way pipe 9 to rotate. The cooperation between the rotating pipe 10 at the end of the three-way pipe 9 away from the vacuum adsorption roller 4 and the three-way pipe 9 allows the three-way pipe 9 to rotate freely within the rotating pipe 10, reducing the impact of the rotation of the three-way pipe 9 on the stability of the connecting pipe 11.

[0068] When rotated to a certain angle, the two vacuum adsorption rollers 4 are brought into contact with the upper and lower surfaces of the casting sheet. Then, the motor 7 is turned off and locked, thus fixing the position of the vacuum adsorption rollers 4. Adsorption of white oil on the casting sheet can then begin. Through the cooperation between the driving gear 8 and the driven gear 6, the vacuum adsorption rollers 4 can be rotated at any angle, thereby increasing the contact area between the vacuum adsorption rollers 4 and the casting sheet. To a certain extent, this improves the adsorption capacity of white oil on the casting sheet. With the cooperation of the auxiliary rollers 3, the casting sheet will not rub against the inlet under the action of the vacuum adsorption rollers 4, thus affecting the surface quality of the casting sheet.

[0069] As the casting sheet moves continuously, it drives the vacuum adsorption roller 4 to rotate continuously. This causes the white oil on the casting sheet to be adsorbed by the oil-absorbing cotton 5 inside the vacuum adsorption roller 4 through the pinholes in the roller. Then, the vacuum pump 16 is turned on, and it draws air out of the sealed buffer tank 12 through the suction pipe 15, creating a vacuum negative pressure inside the tank. The control valve 14 is then slowly opened, and its opening degree is adjusted by observing the vacuum pressure inside the tank. The vacuum pressure inside the tank is then adjusted until it reaches a certain level. At an equilibrium point, the white oil on the casting sheet can be sucked into the sealed buffer tank 12 by the vacuum pump 16 through the cooperation between the vacuum adsorption roller 4, the oil-absorbing cotton 5 and the pipeline assembly. The oil separator 13 ensures that the white oil sucked into the sealed buffer tank 12 will not enter the vacuum pump 16. The white oil that has not been adsorbed by the vacuum adsorption roller 4 and the oil-absorbing cotton 5 on the casting sheet is scraped off by the cooperation between the rubber scraper 1 20 and the rubber scraper 21. The scraped white oil will enter the oil storage tank 19 for storage, which further improves the efficiency of white oil recovery.

[0070] After adsorption is complete, the vacuum adsorption roller 4 and oil-absorbing cotton 5 need to be cleaned or replaced. Since the fixed block 17 is threadedly connected to the driven gear 6, hold the handle 18 and rotate the fixed block 17 through the handle 18. The fixed block 17 slides inside the rotating disk 2 and the side of the vacuum adsorption roller 4 near the driven gear 6. Remove the fixed block 17, and the oil-absorbing cotton 5 can be taken out for cleaning or replacement. The vacuum adsorption roller 4 is also cleaned. After cleaning, the oil-absorbing cotton 5 is reinstalled into the vacuum adsorption roller 4, and then the fixed block 17 is placed into the rotating disk 2 and then put back into its original position. During the time when the vacuum adsorption roller 4 and oil-absorbing cotton 5 are being cleaned or replaced, the white oil on the casting sheet needs to be cleaned by the cooperation between the rubber scraper 1 20 and the rubber scraper 2 21. There is no need to stop the casting sheet from moving and wait for the vacuum adsorption roller 4 and oil-absorbing cotton 5 to be cleaned or replaced, which improves the efficiency of white oil recovery.

[0071] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A white oil recovery apparatus characterized by comprising: include: The housing (1) has an outlet and an inlet at its front and rear ends, respectively; Rotating disk (2), two rotating disks (2) are provided, the rotating disks (2) are symmetrically arranged through both ends inside the housing (1), and the rotating disks (2) are rotatably engaged with the housing (1); Auxiliary rollers (3), two auxiliary rollers (3) are provided, and the two auxiliary rollers (3) are symmetrically rotated at the entrance of the housing (1); White oil adsorption section, wherein the white oil adsorption section is installed between the rotating disks (2); The white oil adsorption section includes: Vacuum adsorption roller (4), two vacuum adsorption rollers (4) are provided, and the vacuum adsorption rollers (4) are symmetrically and rotatably installed between the two rotating disks (2). The vacuum adsorption rollers (4) have a hollow structure and many dense pinholes are opened on the surface of the vacuum adsorption rollers (4). Oil-absorbing cotton (5), each of the vacuum adsorption rollers (4) is equipped with oil-absorbing cotton (5); A rotating part is disposed at one end of the housing (1); The rotating part includes: Driven gear (6), the driven gear (6) is fixedly mounted on the rotating disk (2) on one side of the housing (1); Motor (7), said motor (7) is mounted on the upper part of the housing (1); A drive gear (8) is installed at the output end of the motor (7) and meshes with the driven gear (6); A pipe assembly, wherein the pipe assembly is installed at the end of the white oil adsorption section away from the rotating section; An oil-absorbing assembly, comprising an oil-absorbing section and a buffer section, wherein the oil-absorbing section is installed on the pipe assembly and the buffer section is installed inside the oil-absorbing section; The pipeline assembly includes: A three-way pipe (9) is installed through the rotating disk (2) on the side away from the driven gear (6), and the three-way pipe (9) is connected to the end of the vacuum adsorption roller (4) away from the driven gear (6); Rotating tube (10), the end of the three-way tube (9) away from the vacuum adsorption roller (4) is rotated and sealed with the rotating tube (10). A connecting pipe (11) is connected to the rotating pipe (10), and the end of the connecting pipe (11) is connected to the buffer section; An adsorption cleaning section is installed through the rotating disk (2) near the rotating part.

2. The white oil recovery apparatus according to claim 1, wherein The buffer section includes: A sealed buffer tank (12) is installed at the end of the connecting pipe (11) and is connected to the connecting pipe (11); An oil separator (13) is fixedly installed on the upper part of the sealed buffer tank (12).

3. The white oil recovery device according to claim 2, characterized in that, The oil-absorbing part includes: Control valve (14), the control valve (14) is installed on the connecting pipe (11) near the sealed buffer tank (12); An air extraction pipe (15) is provided, one end of which passes through and is sealed to the upper part of the sealed buffer tank (12). A vacuum pump (16) is connected to the other end of the suction pipe (15).

4. The white oil recovery device according to claim 3, characterized in that, The adsorption cleaning unit includes: Fixed block (17): Each vacuum adsorption roller (4) is slidably provided with a fixed block (17) on the side near the driven gear (6). The fixed block (17) is disposed through the rotating disk (2) and rotates with the rotating disk (2). The fixed block (17) passes through the driven gear (6) and is connected to the driven gear (6) by a thread. A handle (18) is attached to one end of each of the fixed blocks (17) away from the housing (1).

5. The white oil recovery device according to claim 4 further includes a secondary cleaning unit, characterized in that, The secondary cleaning unit includes: Oil tank (19) is installed at the outlet inside the housing (1). A through groove is also provided at the position corresponding to the outlet of the housing (1). Rubber scraper one (20), the rubber scraper one (20) is disposed at the top inside the oil storage tank (19); Rubber scraper 2 (21) is disposed inside the oil storage tank (19); The protective sleeve (22) is disposed inside the outlet and inlet opened at both ends of the housing (1).

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