CN212839240U

CN212839240U - Input shaft structure of filter press pulling plate device

Info

Publication number: CN212839240U
Application number: CN202021387283.7U
Authority: CN
Inventors: 李富实; 张新; 马文东; 张继玲
Original assignee: Laiwu Hanbang Transmission Equipment Co ltd
Current assignee: Laiwu Hanbang Transmission Equipment Co ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2021-03-30
Anticipated expiration: 2030-07-14

Abstract

The utility model relates to an input shaft structure of pressure filter arm-tie device, the technical field who relates to filtration equipment, it includes the support, it is connected with the transmission shaft to rotate on the support, the equal coaxial cover in both ends of transmission shaft is equipped with the axle sleeve, still be provided with the guiding mechanism who is used for adjusting two axle sleeve axialities on the support, guiding mechanism includes two adjusting rings and two end covers, an axle sleeve corresponds an adjusting ring and an end cover, two end covers fixed connection respectively are in the both sides of support, two adjusting rings joint respectively is on two end covers, be the arc setting on the length direction of transmission shaft along the inner peripheral surface of adjusting ring, the arc center of the inner peripheral surface of adjusting ring falls on the axle center of adjusting ring, the joint has a plurality of adjusting balls between axle sleeve and the adjusting ring, the adjusting ball both with axle sleeve roll connection and with adjusting ring. The abrasion of the adjusting ball can be reduced, and the energy consumption is reduced; meanwhile, the end cover does not need to be adjusted after the transmission shaft is installed, so that the installation time is saved, and the installation efficiency is improved.

Description

Input shaft structure of filter press pulling plate device

Technical Field

The application relates to the technical field of filtering equipment, in particular to an input shaft structure of a plate pulling device of a filter press.

Background

The filter press is a common machine for realizing solid and liquid separation in industrial production, has good effect on separating solid and liquid phases of suspension, and is often applied to industries such as chemical industry, ceramics, petroleum, medicines, food, smelting and the like. When the filter press is used for filtering, the filter plates are mutually abutted, and after the filtering is finished, the adjacent filter plates are separated by using the plate pulling device, so that dry materials between the filter plates are discharged.

Referring to fig. 1, most of input shaft structures of the conventional plate pulling device of a filter press comprise a support 11, a transmission shaft 12, an input chain wheel 13, an output chain wheel 14, end covers 22 and bearings 16, wherein the transmission shaft 12 penetrates through the support 11, the transmission shaft 12 is rotatably connected with the support 11, the end covers 22 are provided with two end covers 22 and are fixedly connected to two ends of the support 11 through bolts, the transmission shaft 12 also penetrates through the two end covers 22, the bearings 16 are also provided with two bearings, inner rings of the two bearings 16 are all sleeved on the transmission shaft 12, outer rings of the two bearings 16 are respectively clamped on the two end covers 22, so that the bearings 16 can reduce resistance when the transmission shaft 12 rotates, the input chain wheel 13 and the output chain wheel 14 are all coaxially and fixedly connected to the transmission shaft 12, and the input chain wheel 13 and the output chain.

The above prior art solutions have the following drawbacks: when installing two end covers and two bearings, because two end covers can dismantle the connection on the support through the bolt, and the outer lane of two bearings joint respectively again in two end covers, so make the axiality between two bearings be difficult to guarantee, just can increase the rolling resistance when the transmission shaft rotates for the wearing and tearing of bearing have improved the energy consumption.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a not enough to prior art exists, the purpose of this application is to provide a pressure filter arm-tie device's input shaft structure, can reduce hydraulic motor's load, reduces the probability that hydraulic motor is burnt out, reduces required joint strength between hydraulic motor and the transmission shaft simultaneously.

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

an input shaft structure of a plate pulling device of a filter press comprises a support, wherein a transmission shaft is rotatably connected to the support, an input chain wheel and an output chain wheel are coaxially and fixedly connected to two ends of the transmission shaft respectively, shaft sleeves are coaxially sleeved at two ends of the transmission shaft, an adjusting mechanism for adjusting the coaxiality of the two shaft sleeves is further arranged on the support, the adjusting mechanism comprises two adjusting rings and two end covers, one shaft sleeve corresponds to one adjusting ring and one end cover, the two end covers are fixedly connected to two sides of the support respectively, the two adjusting rings are clamped on the two end covers respectively, the inner circumferential surface of each adjusting ring is arranged in an arc shape along the length direction of the transmission shaft, the arc center of the inner circumferential surface of each adjusting ring falls on the axis of the corresponding adjusting ring, and a plurality of adjusting balls are clamped between the shaft sleeves and the adjusting rings, the adjusting ball is connected with the shaft sleeve in a rolling way and the adjusting ring in a rolling way.

By adopting the technical scheme, when the transmission shaft is installed, if the axle center of the shaft sleeve is not coaxial with the axle center of the adjusting ring, the adjusting ball can roll on the inner circumferential surface of the adjusting ring at the moment, so that the axle centers of the two shaft sleeves are coaxial, the adjusting ball can be tightly propped against the outer circumferential surface of the shaft sleeve and can also be tightly propped against the inner circumferential surface of the adjusting ring at the same time, the support for the transmission shaft is further kept, meanwhile, when the transmission shaft rotates, the adjusting ball can still roll along the axle center of the shaft sleeve and the inner circumferential surface of the adjusting ring, the abrasion of the adjusting ball is reduced, the rotating resistance of the rotating shaft cannot be increased due to the fact that the axle centers of the; meanwhile, the end cover does not need to be adjusted after the transmission shaft is installed, so that the installation time is saved, and the installation efficiency is improved.

The present application may be further configured in a preferred example to: the adjusting ball groove is formed in the peripheral surface of the shaft sleeve along the circumferential direction of the adjusting ball groove, and the adjusting ball rolls in the adjusting ball groove.

Through adopting above-mentioned technical scheme, when the transmission shaft rotated, the axle sleeve was difficult for taking place relative slip along the axial of self and adjusting ring, and then had reduced the probability that the axle sleeve drops from adjusting ring, had improved stability.

The present application may be further configured in a preferred example to: the adjusting mechanism further comprises a sealing assembly, the sealing assembly comprises two first sealing rings, the two first sealing rings correspond to the shaft sleeve in a one-to-one mode, each first sealing ring comprises a first sealing portion and a second sealing portion, the first sealing portion is arranged on one side, close to the shaft center, of the first sealing ring in the radial direction, the second sealing portion is arranged on one side, far away from the shaft center, of the first sealing ring in the radial direction, the first sealing portion is abutted to the outer peripheral face of the shaft sleeve, the second sealing portion is abutted to the inner peripheral face of the adjusting ring, and the first sealing ring is arranged on one side, far away from the support, of the adjusting ball.

Through adopting above-mentioned technical scheme, the outer peripheral face butt of the inner peripheral surface of first sealing and axle sleeve, the outer peripheral face butt of the outer peripheral face of second sealing and the inner peripheral surface butt of adjustment ring just are difficult for the immersion impurity between axle sleeve and the adjustment ring like this, have slowed down the wearing and tearing rate of adjustment ball, have improved the life-span of adjustment ball, have improved the pivoted stability between axle sleeve and the adjustment ring simultaneously.

The present application may be further configured in a preferred example to: a lubricating cavity is formed among the first sealing ring, the adjusting ring, the end cover, the support, the shaft sleeve and the transmission shaft, an oil inlet hole is formed in the end cover and communicated with the lubricating cavity, and lubricating oil is filled in the lubricating cavity.

Through adopting above-mentioned technical scheme, both can reduce the frictional force between adjustment ball and the adjusting ring, between adjustment ball and the axle sleeve, reduce the energy consumption when transmission shaft rotates, lubricating oil can cool off the adjustment ball simultaneously, reduces the probability that adjustment ball expansion card is dead between axle sleeve and adjusting ring.

The present application may be further configured in a preferred example to: the outer peripheral surface of the second sealing portion is arranged in an arc shape along the axial direction of the second sealing portion, and the outer peripheral surface of the second sealing portion is matched with the inner peripheral surface of the adjusting ring.

Through adopting above-mentioned technical scheme, when the disalignment between axle sleeve and the adjusting ring, first sealing ring keeps coaxial with the axle sleeve, and the outer peripheral face of first sealing ring can remain throughout at the same time and support tightly with the inner peripheral surface of adjusting ring, reduces the probability that lubricating oil leaked between first sealing ring and the adjusting ring.

The present application may be further configured in a preferred example to: the first sealing ring further comprises an anti-slip part, the anti-slip part is arranged on one side, close to the axis, of the first sealing ring in the radial direction and is connected with the first sealing part, the anti-slip part is further arranged on one side, away from the adjusting ball, of the first sealing part, and the inner circumferential surface of the anti-slip part is abutted to the outer circumferential surface of the shaft sleeve.

Through adopting above-mentioned technical scheme, reduced first sealing ring along the axial of self and the probability that the axle sleeve takes place relative slip, and then reduced the probability that produces the gap between first sealing ring and the adjusting ring, reduced the probability that lubricating oil leaked from between first sealing ring and the adjusting ring.

The present application may be further configured in a preferred example to: the first sealing ring further comprises a plurality of supporting rib plates, one ends of the supporting rib plates are fixedly connected to the outer peripheral face of the anti-skid portion, the other ends of the supporting rib plates are fixedly connected with the second sealing portion, and the supporting rib plates are uniformly distributed along the circumferential direction of the first sealing ring.

Through adopting above-mentioned technical scheme, establish first sealing ring cover back on the axle sleeve, the support floor both can support the second sealing, in order to improve first sealing, the axiality between second sealing and the axle sleeve, and then improve sealed efficiency, the while support floor can support anti-skidding portion, compress tightly the anti-skidding portion on the outer peripheral face of axle sleeve in order to increase frictional force, reduce the probability that relative slip takes place for axial and axle sleeve along self of first sealing ring, and then reduced the probability that lubricating oil leaked between first sealing ring and the adjusting ring.

The present application may be further configured in a preferred example to: the sealing assembly further comprises a second sealing ring, the second sealing ring is arranged between the end cover and the support, and two end faces of the second sealing ring are respectively abutted to the end cover and the support.

By adopting the technical scheme, the sealing performance between the end cover and the support is improved, and the leakage probability of lubricating oil in the lubricating cavity between the end cover and the support is reduced.

The present application may be further configured in a preferred example to: the sealing assembly further comprises an oil plug, and the oil plug is in threaded connection with the oil inlet hole.

Through adopting above-mentioned technical scheme, when needs are to lubricated intracavity oiling, take out the oil plug from the oil feed hole can be to the oiling of lubricated intracavity, when need not to the oiling of lubricated intracavity, twist the oil plug in the oil feed hole, so can accomplish the sealed of oil feed hole, reduce the probability that impurity got into lubricated chamber from the oil feed hole.

The present application may be further configured in a preferred example to: the oil plug is hollow setting, the through-hole has all been seted up at oil plug along self axial both ends, seal assembly still includes ball sealer and compression spring, compression spring with the ball sealer all sets up in the oil plug, compression spring's one end with the oil plug butt, compression spring's the other end with the ball sealer butt, the ball sealer is in the joint is in under compression spring's the spring action the oil plug is kept away from in the through-hole in lubricated chamber.

By adopting the technical scheme, when oil needs to be injected into the lubricating cavity, the sealing ball is pressed down, and the lubricating cavity can be communicated with the outside, so that the oil can be injected into the lubricating cavity; after the oiling finishes, loosen the ball sealer, the ball sealer just can automatic re-setting and joint accomplish sealed in the through-hole of the one end of keeping away from the seal chamber at first sealing ring under compression spring's effect, so reduced the degree of difficulty when lubricating the intracavity oiling promptly, reduced the time of lubricated chamber with external intercommunication simultaneously, reduced the probability that impurity got into lubricated chamber.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the arrangement of the adjusting mechanism, the abrasion of the adjusting ball can be reduced, the rotation resistance of the rotating shaft cannot be increased due to the fact that the shaft sleeve and the axis of the adjusting ring are not coaxial, and the energy consumption is reduced; meanwhile, the end cover does not need to be adjusted after the transmission shaft is installed, so that the installation time is saved, and the installation efficiency is improved.

2. Through the setting of first sealing washer, the outer peripheral face butt of the inner peripheral surface of first sealing and axle sleeve, the outer peripheral face butt of the outer peripheral face of second sealing and the inner peripheral surface butt of adjustment ring, just so be difficult for soaking impurity between axle sleeve and the adjustment ring, slowed down the wearing and tearing speed of adjustment ball, improved the life-span of adjustment ball, improved pivoted stability between axle sleeve and the adjustment ring simultaneously.

3. Through the setting of antiskid portion and support floor, establish first sealing ring cover back on the axle sleeve, support floor both can support the second sealing portion, with the axiality that improves first sealing portion, between second sealing portion and the axle sleeve, and then improve sealed efficiency, support floor can support antiskid portion simultaneously, compress tightly antiskid portion on the outer peripheral face of axle sleeve in order to increase frictional force, reduce the probability that relative slip takes place for first sealing ring along the axial of self and axle sleeve, and then reduced the probability that lubricating oil leaked between first sealing ring and the adjusting ring.

4. Through the arrangement of the oil plug, the compression spring and the sealing ball, when oil needs to be injected into the lubricating cavity, the sealing ball is pressed down, and the lubricating cavity can be communicated with the outside, so that the oil can be injected into the lubricating cavity; after the oiling finishes, loosen the ball sealer, the ball sealer just can automatic re-setting and joint accomplish sealed in the through-hole of the one end of keeping away from the seal chamber at first sealing ring under compression spring's effect, so reduced the degree of difficulty when lubricating the intracavity oiling promptly, reduced the time of lubricated chamber with external intercommunication simultaneously, reduced the probability that impurity got into lubricated chamber.

Drawings

Fig. 1 is a schematic cross-sectional view of an overall structure of a related art;

FIG. 2 is a schematic sectional view of the entire structure of the present embodiment;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is an enlarged view of portion B of FIG. 3;

fig. 5 is an enlarged schematic view of a portion C in fig. 3.

Reference numerals: 11. a support; 12. a drive shaft; 13. an input sprocket; 14. an output sprocket; 15. a shaft sleeve; 151. adjusting the ball groove; 16. a bearing; 2. an adjustment mechanism; 21. an adjustment ring; 22. an end cap; 221. an oil inlet hole; 23. adjusting the ball; 24. a lubrication chamber; 3. a seal assembly; 31. a first seal ring; 311. a first seal portion; 312. a second seal portion; 313. an anti-slip portion; 314. a support rib plate; 32. a second seal ring; 33. an oil plug; 34. a compression spring; 35. a sealing ball; 36. and (5) fastening the screw.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

Referring to fig. 2, the present embodiment provides an input shaft structure of a plate pulling device of a filter press, which includes a support 11, a transmission shaft 12 is rotatably connected to the support 11, the transmission shaft 12 penetrates through the support 11, and two ends of the transmission shaft 12 are respectively connected to an input sprocket 13 and an output sprocket 14 through coaxial keys, that is, the input sprocket 13 and the output sprocket 14 are respectively disposed on two sides of the support 11. The both ends of transmission shaft 12 all coaxial cover are equipped with axle sleeve 15, are interference fit between axle sleeve 15 and the transmission shaft 12, and two axle sleeves 15 set up respectively in the both sides of support 11, and two axle sleeves 15 set up between input sprocket 13 and output sprocket 14.

Referring to fig. 2 and 3, the bracket 11 is further provided with an adjusting mechanism 2 for adjusting the coaxiality of the two shaft sleeves 15, the adjusting mechanism 2 includes two adjusting rings 21 and two end covers 22, and one shaft sleeve 15 corresponds to one adjusting ring 21 and one end cover 22. The two end covers 22 are respectively fixedly connected to two sides of the bracket 11 through bolts, the two adjusting rings 21 are respectively clamped on the inner circumferential surfaces of the two end covers 22, and the transmission shaft 12 penetrates through the two end covers 22 and the two adjusting rings 21.

The inner peripheral surface of the adjusting ring 21 is arranged in an arc shape along the length direction of the transmission shaft 12, and the arc center of the inner peripheral surface of the adjusting ring 21 is located on the shaft center of the adjusting ring 21. A plurality of adjusting balls 23 are arranged between the shaft sleeve 15 and the adjusting ring 21, an adjusting ball groove 151 used for limiting the adjusting balls 23 is formed in the peripheral surface of the shaft sleeve 15 along the circumferential direction of the shaft sleeve, the adjusting balls 23 are clamped in the adjusting ball groove 151, and the adjusting balls 23 are connected with the shaft sleeve 15 in a rolling manner and the adjusting ring 21 in a rolling manner. The adjusting balls 23 are uniformly arranged between the shaft sleeve 15 and the adjusting ring 21 along the circumferential direction of the shaft sleeve 15, so that the shaft sleeve 15 can rotate universally with the adjusting ring 21 along the arc center of the inner circumferential surface of the adjusting ring 21, and the shaft sleeve 15 cannot slide relative to the adjusting ring 21 along the axial direction of the shaft sleeve 15.

Referring to fig. 3 and 4, the adjusting mechanism 2 further includes a sealing assembly 3, the sealing assembly 3 includes two first sealing rings 31 and two second sealing rings 32, the two second sealing rings 32 are disposed between the two end covers 22 and the bracket 11, and under the action of the bolts, two ends of the second sealing rings 32 respectively abut against the bracket 11 and the end cover 22.

A first sealing ring 31 corresponds to a shaft sleeve 15, the first sealing ring 31 is sleeved outside the shaft sleeve 15, and the first sealing ring 31 is arranged on one side of the adjusting ball 23 away from the bracket 11. The first seal ring 31 includes a first seal portion 311 and a second seal portion 312, the first seal portion 311 is provided on a side of the first seal ring 31 closer to the axial center in the radial direction, the second seal portion 312 is provided on a side of the second seal ring 32 farther from the axial center in the radial direction, the first seal portion 311 abuts against the outer peripheral surface of the sleeve 15, and the second seal portion 312 abuts against the inner peripheral surface of the adjustment ring 21. The outer peripheral surface of the second sealing portion 312 is also provided in an arc shape in the axial direction thereof, and the outer peripheral surface of the second sealing portion 312 is adapted to the shape of the inner peripheral surface of the adjustment ring 21, that is, the outer peripheral surface of the second sealing portion 312 completely adheres to the inner peripheral surface of the adjustment ring 21.

The first seal ring 31 further includes a non-slip portion 313 and a support rib 314, the non-slip portion 313 is provided on a side of the first seal ring 31 closer to the axial center in the radial direction, the non-slip portion 313 is connected to the first seal portion 311, the non-slip portion 313 is further provided on a side of the first seal portion 311 farther from the adjustment ball 23, and an inner peripheral surface of the non-slip portion 313 abuts against an outer peripheral surface of the boss 15. The plurality of support ribs 314 are provided, one end of each support rib 314 is connected to the outer peripheral surface of the anti-slip portion 313, the other end of each support rib 314 is connected to one end surface of the second sealing portion 312, which is away from the adjustment ball 23, the plurality of support ribs 314 are uniformly arranged in the circumferential direction of the first seal ring 31, and the entire first seal ring 31 is integrally formed.

When the radial force applied to the propeller shaft 12 is large so that the first seal ring is easily slid toward the adjustment ball 23 in the axial direction of the sleeve 15, the anti-slip portion 313 of the first seal ring 31 may be fastened to the sleeve 15 using the fastening screw 36. When the first seal ring 31 is fastened using the fastening screw 36, the fastening screw 36 passes through the anti-slip portion 313 of the first seal ring 31, and the fastening screw 36 is screwed with the boss 15. The fastening screw 36 may be provided in plurality, and a plurality of fastening screws 36 are uniformly arranged along the axial direction of the shaft sleeve 15, and preferably, the axial center of the fastening screw 36 is perpendicular to the axial center of the shaft sleeve 15.

A lubricating cavity 24 is formed among the first sealing ring 31, the adjusting ring 21, the end cover 22, the second sealing ring 32, the support 11, the shaft sleeve 15 and the transmission shaft 12, a vertical oil inlet hole 221 is formed in the upper portion of the end cover 22, the oil inlet hole 221 is communicated with the lubricating cavity 24, and lubricating oil is filled in the lubricating cavity 24. This allows the adjustment ball 23 to be lubricated and the adjustment ball 23 to be cooled.

Referring to fig. 4 and 5, the sealing assembly 3 further includes an oil plug 33, a sealing ball 35 and a compression spring 34, the oil plug 33 is hollow, and through holes are formed in both ends of the oil plug 33 in the axial direction. The outer circumferential surface of the oil plug 33 is threaded so that the oil plug 33 can be screwed into the oil inlet hole 221. The compression spring 34 and the sealing ball 35 are both arranged in the oil plug 33, one end of the compression spring 34 is abutted against the oil plug 33, the other end of the compression spring 34 is abutted against the sealing ball 35, and the sealing ball 35 is clamped in a through hole of the oil plug 33 far away from the lubricating cavity 24 under the elastic force action of the compression spring 34.

The implementation principle of the embodiment is as follows:

when the transmission shaft 12 is installed, if the axes of the shaft sleeves 15 are not coaxial with the axes of the adjusting rings 21, the adjusting balls 23 roll on the inner circumferential surface of the adjusting rings 21, so that the axes of the two shaft sleeves 15 are coaxial, the adjusting balls 23 can be tightly abutted to the outer circumferential surfaces of the shaft sleeves 15 and the inner circumferential surface of the adjusting rings 21, the support of the transmission shaft 12 is further kept, and meanwhile, when the transmission shaft 12 rotates, the adjusting balls 23 can still roll along the axes of the shaft sleeves 15 and the inner circumferential surface of the adjusting rings 21, so that the abrasion of the adjusting balls 23 is reduced, the rotation resistance of the rotating shaft cannot be increased due to the fact that the axes of the shaft sleeves 15 and the adjusting rings 21 are not coaxial, and the energy consumption is reduced; meanwhile, the end cover 22 does not need to be adjusted after the transmission shaft 12 is installed, so that the installation time is saved, and the installation efficiency is improved; when the shaft sleeve 15 rotates along the arc center of the inner circumferential surface of the adjusting ring 21, the second sealing portion 312 on the first sealing ring 31 is always attached to the inner circumferential surface of the adjusting ring 21, so that the lubricating oil in the lubricating cavity 24 is not easy to leak out from between the first sealing ring 31 and the adjusting ring 21, the probability that impurities enter between the shaft sleeve 15 and the adjusting ring 21 to affect the adjusting ball 23 can be reduced, the good lubricating property and cooling property of the adjusting ball 23 can be maintained, the rotation resistance is reduced, and the probability that the adjusting ball 23 is clamped between the adjusting ring 21 and the shaft sleeve 15 is reduced.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the 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. The input shaft structure of the plate pulling device of the filter press is characterized by comprising a support (11), wherein a transmission shaft (12) is rotatably connected onto the support (11), an input chain wheel (13) and an output chain wheel (14) are respectively and fixedly connected to two ends of the transmission shaft (12) in a coaxial mode, shaft sleeves (15) are respectively and coaxially sleeved at two ends of the transmission shaft (12), an adjusting mechanism (2) used for adjusting the coaxiality of the two shaft sleeves (15) is further arranged on the support (11), the adjusting mechanism (2) comprises two adjusting rings (21) and two end covers (22), one shaft sleeve (15) corresponds to one adjusting ring (21) and one end cover (22), the two end covers (22) are respectively and fixedly connected to two sides of the support (11), the two adjusting rings (21) are respectively clamped on the two end covers (22), the inner peripheral surface of the adjusting ring (21) is arranged in an arc shape along the length direction of the transmission shaft (12), the arc center of the inner peripheral surface of the adjusting ring (21) is located on the axis of the adjusting ring (21), a plurality of adjusting balls (23) are clamped between the shaft sleeve (15) and the adjusting ring (21), and the adjusting balls (23) are in rolling connection with the shaft sleeve (15) and the adjusting ring (21).

2. The input shaft structure of a filter press pulling plate device according to claim 1, wherein: an adjusting ball groove (151) is formed in the peripheral surface of the shaft sleeve (15) along the circumferential direction of the shaft sleeve, and the adjusting ball (23) rolls in the adjusting ball groove (151).

3. The input shaft structure of a filter press pulling plate device according to claim 1, wherein: the adjusting mechanism (2) further comprises a sealing assembly (3), the sealing assembly (3) comprises a first sealing ring (31), two first sealing rings (31) are arranged, the first sealing rings (31) correspond to the shaft sleeves (15) one by one, the first sealing rings (31) comprise first sealing parts (311) and second sealing parts (312), the first sealing part (311) is arranged on one side of the first sealing ring (31) close to the axial center in the radial direction, the second seal portion (312) is provided on a side of the first seal ring (31) which is radially away from the axial center, the first seal portion (311) abuts against the outer peripheral surface of the sleeve (15), the second seal portion (312) abuts against the inner peripheral surface of the adjustment ring (21), the first sealing ring (31) is arranged on one side, away from the support (11), of the adjusting ball (23).

4. The input shaft structure of a filter press pulling plate device according to claim 3, wherein: a lubricating cavity (24) is formed among the first sealing ring (31), the adjusting ring (21), the end cover (22), the support (11), the shaft sleeve (15) and the transmission shaft (12), an oil inlet hole (221) is formed in the end cover (22), the oil inlet hole (221) is communicated with the lubricating cavity (24), and lubricating oil is filled in the lubricating cavity (24).

5. The input shaft structure of a filter press pulling plate device according to claim 3, wherein: the outer peripheral surface of the second sealing part (312) is arranged in an arc shape along the axial direction of the second sealing part, and the outer peripheral surface of the second sealing part (312) is matched with the inner peripheral surface of the adjusting ring (21).

6. The input shaft structure of a filter press pulling plate device according to claim 3, wherein: the first sealing ring (31) further comprises a non-slip part (313), the non-slip part (313) is arranged on one side, close to the axis, of the first sealing ring (31) in the radial direction, the non-slip part (313) is connected with the first sealing part (311), the non-slip part (313) is further arranged on one side, away from the adjusting ball (23), of the first sealing part (311), and the inner circumferential surface of the non-slip part (313) is abutted to the outer circumferential surface of the shaft sleeve (15).

7. The input shaft structure of a filter press pulling plate device according to claim 6, wherein: the first sealing ring (31) further comprises a plurality of supporting ribs (314), one ends of the supporting ribs (314) are fixedly connected to the outer peripheral surface of the anti-slip portion (313), the other ends of the supporting ribs (314) are fixedly connected to the second sealing portion (312), and the plurality of supporting ribs (314) are uniformly distributed along the circumferential direction of the first sealing ring (31).

8. The input shaft structure of a filter press pulling plate device according to claim 4, wherein: the sealing assembly (3) further comprises a second sealing ring (32), the second sealing ring (32) is arranged between the end cover (22) and the support (11), and two end faces of the second sealing ring (32) are respectively abutted to the end cover (22) and the support (11).

9. The input shaft structure of a filter press pulling plate device according to claim 8, wherein: the sealing assembly (3) further comprises an oil plug (33), and the oil plug (33) is in threaded connection with the oil inlet hole (221).

10. The input shaft structure of a filter press pulling plate device according to claim 9, wherein: oil plug (33) is hollow setting, the through-hole has all been seted up at oil plug (33) along self axial both ends, seal assembly (3) still include ball sealer (35) and compression spring (34), compression spring (34) with ball sealer (35) all set up in oil plug (33), the one end of compression spring (34) with oil plug (33) butt, the other end of compression spring (34) with ball sealer (35) butt, ball sealer (35) are in the joint is in under compression spring's (34) spring action oil plug (33) is kept away from in the through-hole of lubricated chamber (24).