CN217583171U

CN217583171U - High dust-protection type seal structure

Info

Publication number: CN217583171U
Application number: CN202221849362.4U
Authority: CN
Inventors: 张洪伟; 毛德君; 张静
Original assignee: Tektronix Seals Yantai Co ltd
Current assignee: Tektronix Seals Yantai Co ltd
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2022-10-14
Anticipated expiration: 2032-07-18

Abstract

The utility model relates to a high dust-protection type seal structure belongs to the hydraulic cylinder sealing technology field, including annular skeleton, the skeleton tip is equipped with waterproof lip, the skeleton tip still is equipped with dustproof lip, the one end that dustproof lip kept away from the skeleton is equipped with dustproof lip, skeleton one side is equipped with connecting portion, the one end that dustproof lip was kept away from to connecting portion is equipped with double sealed piece, dustproof lip all is inconsistent with the piston rod with double sealed piece. This application has the advantage that dustproof performance is good, longe-lived.

Description

High dust-protection type seal structure

Technical Field

The utility model relates to a high dust-protection type seal structure belongs to the sealed technical field of pneumatic cylinder.

Background

In the fittings of the hydraulic cylinder, a sealing structure plays an important role, and the sealing structure is usually made of rubber and other materials and has certain elasticity and deformation capacity; when the hydraulic cylinder works, one end of the sealing mechanism is abutted to a piston rod of the hydraulic cylinder, so that the sealing structure can isolate external air, and the problem of hydraulic oil leakage can be reduced.

Chinese patent that relevant bulletin number is CN215370969U discloses a sealing washer for pneumatic cylinder, including the sealing washer, the sealing washer is including soft sealing washer down, well soft sealing washer and last soft sealing washer, no. one mounting groove has been seted up to soft sealing washer top edge down, install stereoplasm sealing washer down in the mounting groove, well soft sealing washer bottom and top edge are provided with No. two mounting grooves and No. three mounting grooves respectively, install well stereoplasm sealing washer in the No. three mounting grooves, it is provided with No. four mounting grooves and No. five mounting grooves respectively to go up soft sealing washer bottom and bottom edge, install stereoplasm sealing washer in No. five mounting grooves.

The inventor thinks that after installing above-mentioned sealing washer in the pneumatic cylinder, it is not enough that above-mentioned sealing washer only relies on external diameter interference fit to satisfy the requirement of installation and static seal, can have infiltration, earth entering scheduling problem, and then influences the life of pneumatic cylinder.

SUMMERY OF THE UTILITY MODEL

The utility model discloses not enough to prior art exists provides a high dust-protection type seal structure.

The utility model provides an above-mentioned technical problem's technical scheme as follows: the utility model provides a high dust-protection type seal structure, includes annular skeleton, the skeleton tip is equipped with waterproof lip, the skeleton tip still is equipped with dustproof lip, the one end that dustproof lip kept away from the skeleton is equipped with dustproof lip, skeleton one side is equipped with connecting portion, the one end that dustproof lip was kept away from to connecting portion is equipped with double sealed piece, dustproof lip and double sealed piece all are inconsistent with the piston rod.

The beneficial effect who adopts above-mentioned scheme is: set up the skeleton and can guarantee high seal structure's intensity, and then after this seal structure received pressure, the problem of serious deformation can not appear, through setting up waterproof lip, press from both sides between the guide pin bushing of waterproof lip and skeleton and hydro-cylinder and cooperate, can play the sealing action of preferred, prevent that external muddy water from between guide pin bushing and this seal structure, through setting up dustproof lip and dustproof lip, tightly laminate between dustproof lip and the piston rod, and then can play the dustproof effect of preferred, connecting portion can play the connecting action to the double sealed piece, the double sealed piece is inconsistent with the piston rod, can further improve this seal structure's waterproof and dustproof performance, and then can guarantee the life of pneumatic cylinder.

On the basis of the technical scheme, the utility model discloses can also do as follows the improvement:

further, the dustproof lip comprises a connecting block and an inclined block, the connecting block is fixedly connected with the framework, the inclined block is inclined to the framework, and the dustproof lip is arranged at one end, far away from the connecting block, of the inclined block.

Furthermore, the end part of the inclined block, which is close to the double sealing block, is provided with an annular grain.

Furthermore, the framework comprises a first frame body and a second frame body, an arc-shaped protruding portion is arranged at the joint of the first frame body and the second frame body, and an arc-shaped groove is formed in the position where the waterproof lip is abutted to the protruding portion.

Furthermore, the one end that the protruding portion was kept away from to the water lip is equipped with waterproof lip, the angle that the waterproof lip department was kept away from to the waterproof lip is waterproof lip angle, the number of degrees at waterproof lip angle is 80.

Further, the double-sealing block comprises a first block body and a second block body, a V-shaped groove is reserved between the first block body and the second block body, and a pressure relief hole is formed in the second block body.

Further, one end, far away from block one, of block two is equipped with two lips, the angle that pressure release hole was kept away from to two lips is two lips angles, the degree of two lips angles is 135.

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

1. according to the hydraulic cylinder, the framework, the dustproof lip, the waterproof lip and the double sealing block are arranged, the framework can ensure the integral strength of the sealing structure, the dustproof lip and the double sealing block are abutted against the piston rod, better dustproof performance can be achieved, the problem that dust invades into the oil cylinder can be reduced, the waterproof lip is matched with the guide sleeve of the oil cylinder, a better sealing effect can be achieved, muddy water is prevented from invading between the sealing structure and the guide sleeve, and the service life of the hydraulic cylinder can be prolonged to a certain extent;

2. this application is through setting up the pressure release hole, through the pressure release hole, can let out the pressure that inside hydraulic oil piles up the production, reduces the production of backpressure phenomenon, and then reducible because of pressure is great, with the ejecting problem of this seal structure.

Drawings

Fig. 1 is a schematic cross-sectional structure view of a high dust-proof sealing structure in an embodiment of the present application;

FIG. 2 is a schematic view showing the structure of a lip angle of the waterproof lip in the embodiment of the present application.

In the figure, 1, a skeleton; 11. a first frame body; 12. a second frame body; 13. a protrusion; 2. a water lip; 21. a groove; 22. a waterproof lip; 23. waterproof lip angle; 3. a dust lip; 31. connecting blocks; 32. an inclined block; 33. a ring-shaped pattern; 34. a connecting portion; 4. a double seal block; 41. a first block body; 42. a second block body; 43. a V-shaped groove; 44. a second lip; 45. a second lip angle; 5. a pressure relief vent.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

As shown in figure 1, a high dust-proof seal structure includes annular skeleton, and the skeleton is made for metal material, and the skeleton of metal material preparation has the supporting role of preferred, can guarantee the holistic intensity of this seal structure, is convenient for connect simultaneously between other structures, still is equipped with waterproof lip on the skeleton, dustproof lip and double sealing piece, through setting up waterproof lip, dustproof lip and double sealing piece, can improve the waterproof dustproof performance of this seal structure, and then can guarantee the life of the pneumatic cylinder of using this seal structure.

As shown in fig. 1, the framework 1 includes a first framework 11 and a second framework 12, an arc-shaped protruding portion 13 is arranged at a joint of the first framework 11 and the second framework 12, a waterproof lip 2 is fixedly bonded at the protruding portion 13 of the framework 1, the waterproof lip 2 is provided with an arc-shaped groove 21 matched with the protruding portion 13, the protruding portion 13 is arranged to improve a contact area at the joint with the waterproof lip 2, so that the joint strength of the waterproof lip 2 can be ensured, after long-term use, the problem that the waterproof lip 2 falls off can be reduced, abrasion to the waterproof lip 2 can be reduced, and the waterproof lip 2 can be protected; through setting up waterproof lip 2, waterproof lip 2 closely cooperates with the guide pin bushing of pneumatic cylinder, can play the sealed effect of preferred, places external muddy water and gets into the cylinder body from the external diameter.

As shown in fig. 1 and 2, one end of the waterproof lip 2 away from the protruding portion 13 is provided with a waterproof lip 22, the angle of the waterproof lip 22 away from the waterproof lip 2 is a waterproof lip angle 23, the degree of the waterproof lip angle 23 is 80 °, the sealing structure is installed in the guide sleeve of the oil cylinder, the waterproof lip angle 23 is inconsistent with the guide sleeve, the waterproof lip angle 23 is set to 80 °, the waterproof lip 22 receives the extrusion force of the guide sleeve, the extrusion force is conveniently transmitted and discharged, and the abrasion to the waterproof lip 2 can be further reduced. The range of the angle 23 of the lip portion can be set to 76 to 82 degrees, and the excellent abrasion resistance of the lip portion 2 can be maintained in this range.

As shown in fig. 1, the end of the framework 1 is further provided with a dust lip 3, the dust lip 3 comprises a connecting block 31 and an inclined block 32, the connecting block 31 is fixedly bonded with a first 11 frame body, the connecting block 31 and the inclined block 32 are integrally formed, the inclined block 32 is inclined to the connecting block 31, one end, away from the framework 1, of the inclined block 32 is provided with a dust lip, the sealing structure is installed in a guide sleeve of the oil cylinder, the dust lip is abutted to a piston rod of the oil cylinder, the dust lip is abutted to the piston rod of the oil cylinder, and is tightly attached to the piston rod of the oil cylinder, a dust-proof effect with a better performance can be achieved, dust can be prevented from easily invading into the oil cylinder, and the service life of the oil cylinder can be prolonged to a certain degree.

As shown in fig. 1, the end of the inclined block 32 close to the piston rod is provided with an annular groove 33, lubricating oil can be stored in the annular groove 33, a good lubricating effect is achieved, and the problems of premature aging, hardening and embrittlement of the inclined block 32 and cracking and aging caused by lack of lubrication of rubber materials are solved, so that the service life of the sealing structure is prolonged, and the service life of the oil cylinder is prolonged to a certain extent.

As shown in fig. 1, a connecting portion 34 is fixedly bonded to one end of the framework 1, the end portion of the connecting portion 34 is integrally formed with the connecting block 31, a double sealing block 4 is arranged at one end of the connecting portion 34, which is far away from the connecting block 31, the double sealing block 4 is also abutted to the piston rod, the double sealing block 4 can play a role in sealing internal hydraulic oil, the problem of leakage of hydraulic oil in the oil cylinder can be reduced, and meanwhile, the problem of external dust entering the inside of the oil cylinder can be reduced.

As shown in fig. 1, the dual-seal block 4 includes a first block 41 and a second block 42, the first block 41 and the second block 41 are fixedly connected to the framework 1, the second block 42 is integrally formed with the connecting portion 34 and the first block 41, and a V-shaped groove 43 is left between the first block 41 and the second block 42, when the second block 42 is abutted to the piston rod and receives the force transmitted by the piston rod, the V-shaped groove 43 is arranged to play a better role in buffering and damping, so as to further protect the seal structure, and further prolong the service life of the seal structure. The second block 42 is provided with a pressure relief hole 5, pressure generated by accumulation of hydraulic oil in the guide sleeve can be released through the pressure relief hole 5, and the problem that the sealing structure is released by pressure due to overlarge pressure is solved.

As shown in fig. 1 and 2, one end of the block body two 42, which is far away from the block body one 41, is provided with two lips 44, an angle of the two lips 44, which is far away from the pressure relief hole 5, is a two-lip angle 45, the degree of the two-lip angle 45 is 135 °, after the sealing structure is installed in the oil cylinder, the two lips 44 are abutted against the piston rod, so that a better sealing effect can be achieved, and meanwhile, the degree of the two-lip angle 45 is set to 135 °, so that the sealing structure can be ensured to have better static sealing performance.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a high dust-protection type seal structure which characterized in that: including annular skeleton (1), skeleton (1) tip is equipped with waterproof lip (2), skeleton (1) tip still is equipped with dustproof lip (3), the one end that skeleton (1) were kept away from in dustproof lip (3) is equipped with dustproof lip, skeleton (1) one side is equipped with connecting portion (34), the one end that dustproof lip (3) were kept away from in connecting portion (34) is equipped with double sealed piece (4), dustproof lip all contradicts with the piston rod with double sealed piece (4).

2. The high dust-proof sealing structure according to claim 1, wherein: dustproof lip (3) are including connecting block (31) and slope piece (32), connecting block (31) and skeleton (1) fixed connection, slope piece (32) are inclined to skeleton (1) and are set up, dustproof lip sets up the one end of keeping away from connecting block (31) in slope piece (32).

3. The high dust-proof seal structure of claim 2, characterized in that: the end part of the inclined block (32) close to the double-sealing block (4) is provided with an annular grain (33).

4. The high dust-proof sealing structure according to claim 1, wherein: skeleton (1) is including support body one (11) and support body two (12), support body one (11) is equipped with curved protruding portion (13) with support body two (12) junction, curved recess (21) have been seted up in waterproof lip (2) and protruding portion (13) looks butt department.

5. The high dust-proof sealing structure according to claim 4, wherein: one end of the waterproof lip (2) far away from the protruding part (13) is provided with a waterproof lip opening (22), the angle of the waterproof lip (2) far away from the waterproof lip opening (22) is a waterproof lip opening angle (23), and the degree of the waterproof lip opening angle (23) is 80 degrees.

6. The high dust-proof sealing structure according to claim 1, wherein: the double-sealing block (4) comprises a first block body (41) and a second block body (42), a V-shaped groove (43) is reserved between the first block body (41) and the second block body (42), and the second block body (42) is provided with a pressure relief hole (5).

7. The high dust-proof sealing structure according to claim 6, wherein: the one end that block two (42) kept away from block one (41) is equipped with two lips (44), the angle that pressure release hole (5) were kept away from to two lips (44) is two lips angle (45), the degree of two lips angle (45) is 135.