CN216589925U

CN216589925U - Reinforced rubber sealing ring

Info

Publication number: CN216589925U
Application number: CN202123359023.6U
Authority: CN
Inventors: 李小兵
Original assignee: Suzhou Liqin Plastic Products Co
Current assignee: Suzhou Liqin Plastic Products Co
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-05-24
Anticipated expiration: 2031-12-29

Abstract

The utility model provides a strenghthened type rubber seal, include: the inner circle, inner circle and outer lane, inside be provided with the support ring, and the outside of support ring is connected with the stiffener, the outer lane is connected in the outside of inner circle, and the outer end of outer lane has seted up the inlet port to the edge of outer lane is provided with the slope portion of leading, the inside of outer lane is provided with interior arc pole, and the outside of interior arc pole is provided with outer arc pole, the both ends of interior arc pole and outer arc pole are provided with the link, and the inside of interior arc pole and outer arc pole is provided with the strengthening rib. The utility model provides a pneumatic cylinder piston seal circle inner structure intensity among the prior art weaker, appear wearing and tearing fracture ageing condition easily after long-time the use, the elasticity is limit variation gradually, this is just unable to continue the sealed of guaranteeing the junction to make the relatively poor problem of the in-service use effect of the sealing washer among the prior art.

Description

Reinforced rubber sealing ring

Technical Field

The utility model relates to a sealing washer technical field, concretely relates to strenghthened type rubber seal.

Background

The sealing ring is a part which can play a sealing effect at a joint, the sealing ring mainly has the functions of tightly contacting, preventing air leakage and liquid leakage, and also has the functions of pressure relief, shock resistance and looseness prevention, the sealing ring is widely applied, such as a motor, an oil cylinder and the like, most of the sealing rings are made of soft materials such as rubber and the like, the sealing ring mainly provides sealing force by the elasticity of the materials to realize the sealing effect, most of the sections of the existing sealing rings are in a standard circle shape or an oval shape, and the inner and outer circumferential surfaces of the existing sealing rings are extruded to form inner and outer sealing surfaces, and the sealing ring with the structure is widely applied to various industries due to convenient manufacture and low cost.

However, the internal structure strength of the existing hydraulic cylinder piston sealing ring is weak, the situation of abrasion, fracture and aging easily occurs after long-time use, the flexibility gradually becomes poor, and the sealing of the joint cannot be continuously guaranteed, so that the actual using effect of the sealing ring in the prior art is poor.

SUMMERY OF THE UTILITY MODEL

For overcoming the defect that prior art exists, provide a strenghthened type rubber seal now to solve the inside structure intensity of the pneumatic cylinder piston seal among the prior art less than, appear wearing and tearing the ageing condition of fracture easily after long-time the use, the elasticity is the limit gradually worsens, this just can't continue to guarantee the sealed of junction, thereby makes the relatively poor problem of the actual use effect of the sealing washer among the prior art.

In order to realize the above-mentioned purpose, provide a strenghthened type rubber seal, include:

the inner circle, inner circle and outer lane, inside be provided with the support ring, and the outside of support ring is connected with the stiffener, the outer lane is connected in the outside of inner circle, and the outer end of outer lane has seted up the inlet port to the edge of outer lane is provided with the slope portion of leading, the inside of outer lane is provided with interior arc pole, and the outside of interior arc pole is provided with outer arc pole, the both ends of interior arc pole and outer arc pole are provided with the link, and the inside of interior arc pole and outer arc pole is provided with the strengthening rib.

Furthermore, the sections of the inner ring and the outer ring are both rectangular structures, the inner ring is located in the middle of the inner side of the outer ring, and the support ring penetrates through the inner part of the inner ring.

Furthermore, the outer end of the support ring is connected with an inclined strut, the section of the inclined strut is of a V-shaped structure, and the outer end of the inclined strut is inserted into the outer ring and connected with the inner arc rod.

Furthermore, the inner arc rod and the outer arc rod are of oval structures with opposite arc openings, and the two ends of the inner arc rod and the two ends of the outer arc rod are fixedly connected through the connecting ends.

Furthermore, the reinforcing rib is arranged to be of an M-shaped structure, the open end of the M shape faces outwards and is fixedly connected with the outer arc rod, and the other end of the M shape is fixedly connected with the inner arc rod.

Furthermore, an oil duct is formed in the outer ring, one end of the oil duct is communicated with the oil inlet hole, and the other end of the oil duct is communicated with an expansion cavity formed in the outer ring.

Furthermore, the inner ring is provided with a ring structure consisting of an inner nitrile rubber layer and an outer polyurethane layer, and the outer ring is provided with a ring structure consisting of an inner polytetrafluoroethylene layer and an outer nylon layer.

The utility model has the advantages that the reinforced rubber sealing ring of the utility model utilizes the supporting ring and the reinforcing rod which are arranged inside the inner ring, and the nitrile rubber layer and the polyurethane layer which are arranged inside the inner ring to reinforce the internal structural strength of the inner ring, and enhance the connection strength and the stability of the inner ring and the piston part, and the wear resistance of the joint groove of the piston part, utilizes the inner arc rod and the outer arc rod which are arranged inside the outer ring, and the reinforcing rib which is arranged inside, and reinforce the internal structural strength of the outer ring, and enhance the connection tightness of the inner ring and the outer ring through the diagonal brace, and form an oval structure through the inner arc rod and the outer arc rod to play a role in enhancing the internal expansion performance of the outer ring, and through the oil duct and the expansion cavity, when the piston moves, a part of hydraulic oil enters the expansion cavity through the oil duct, and an outward expansion force is formed locally on the outer ring, and the sliding sealing performance of the hydraulic cylinder and the cylinder wall of the sealing ring is increased, thereby better protection the result of use of sealing washer.

Drawings

Fig. 1 is a schematic view of a partial three-dimensional structure according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of an inner side top view cross-sectional structure according to an embodiment of the present invention.

Fig. 3 is a schematic longitudinal sectional structure diagram according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of a material layered structure according to an embodiment of the present invention.

1. An inner ring; 2. a support ring; 3. an outer ring; 4. a slope guide part; 5. an oil inlet hole; 6. a reinforcing bar; 7. a diagonal brace; 8. an inner arc rod; 9. an outer arc bar; 10. an oil passage; 11. an expansion chamber; 12. a connecting end; 13. reinforcing ribs; 14. a polyurethane layer; 15. a layer of nitrile rubber; 16. a nylon layer; 17. a polytetrafluoroethylene layer.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

Fig. 1 is the utility model discloses local spatial structure schematic diagram, fig. 2 are the utility model discloses an inboard section structure schematic diagram, fig. 3 is overlooked to the inboard the utility model discloses a longitudinal section structure schematic diagram, fig. 4 are the utility model discloses the material layer structure schematic diagram of embodiment.

Referring to fig. 1 to 4, the utility model provides a strenghthened type rubber seal, include: the oil-gas separation device comprises an inner ring 1, a support ring 2, an outer ring 3, an inner arc rod 8, an outer arc rod 9, an oil duct 10 and an expansion cavity 11.

Specifically, inner circle 1 and outer lane 3, inside be provided with support ring 2, and the outside of support ring 2 is connected with stiffener 6, outer lane 3 is connected in the outside of inner circle 1, and the outer end of outer lane 3 has seted up inlet port 5, and the edge of outer lane 3 is provided with oblique guide portion 4, the inside of outer lane 3 is provided with interior arc pole 8, and the outside of interior arc pole 8 is provided with outer arc pole 9, the both ends of interior arc pole 8 and outer arc pole 9 are provided with link 12, and the inside of interior arc pole 8 and outer arc pole 9 is provided with strengthening rib 13.

In this embodiment, the oil inlet 5 is opened at the inclined guide portion 4 of the outer ring 3 close to the inner wall of the cylinder body, and the inclined guide portion 4 facilitates the piston to be inserted into the cylinder body for assembly after the sealing ring of this embodiment is installed.

The inner arc rod 8 and the outer arc rod 9 are made of elastic materials, so that the formed elliptical structure has certain telescopic performance.

The cross sections of the inner ring 1 and the outer ring 3 are both rectangular structures, the inner ring 1 is positioned in the middle of the inner side of the outer ring 3, and the support ring 2 penetrates through the inner part of the inner ring 1.

As a better implementation mode, the inner ring 1 is installed in a mounting groove of a sealing ring in the piston, the outer ring 3 is in sliding contact with the inner wall of a cylinder body to play a sealing effect, and the support ring 2 strengthens the structural strength of the ring body of the inner ring 1.

The outer end of the support ring 2 is connected with a diagonal brace 7, the section of the diagonal brace 7 is set to be a V-shaped structure, and the outer end of the diagonal brace 7 is inserted into the outer ring 3 and connected with an inner arc rod 8.

As a preferred embodiment, the diagonal brace 7 enhances the connection stability of the inner race 1 and the outer race 3, and the V-shaped mouth of the diagonal brace 7 faces outward, so that there is a certain expandability.

The inner arc rod 8 and the outer arc rod 9 are arranged to be of oval structures with opposite arc openings, and the two ends of the inner arc rod 8 and the two ends of the outer arc rod 9 are fixedly connected through the connecting ends 12.

The reinforcing rib 13 is arranged to be of an M-shaped structure, the open end of the M shape faces outwards and is fixedly connected with the outer arc rod 9, and the other end of the M shape is fixedly connected with the inner arc rod 8.

As a preferred embodiment, the reinforcing rib 13 strengthens the connection stability of the inner arc rod 8 and the outer arc rod 9, the inner arc rod 8 and the outer arc rod 9 form an oval structure to penetrate through the whole outer ring 3, and the reinforcing rib 13 forms a certain supporting effect inside.

An oil duct 10 is formed in the outer ring 3, one end of the oil duct 10 is communicated with the oil inlet 5, and the other end of the oil duct is communicated with an expansion cavity 11 formed in the outer ring 3.

As a preferred embodiment, the hydraulic oil enters the expansion cavity 11 through the oil passage 10, and forms an outward expansion force to the rubber material of the outer ring 3 outside the outer expansion cavity 11, so as to increase the sliding sealing performance between the outer ring 3 and the cylinder wall of the hydraulic cylinder.

The inner ring 1 is provided with a ring structure consisting of an inner nitrile rubber layer 15 and an outer polyurethane layer 14, and the outer ring 3 is provided with a ring structure consisting of an inner polytetrafluoroethylene layer 17 and an outer nylon layer 16.

As a preferred implementation mode, the inner ring 1 provided with the nitrile rubber layer 15 and the polyurethane layer 14 and the outer ring 3 provided with the polytetrafluoroethylene layer 17 and the nylon layer 16 are made of composite materials, so that the wear resistance and the ageing resistance of the embodiment are better.

The reinforced rubber sealing ring of the utility model can effectively solve the problems that the internal structural strength of the hydraulic cylinder piston sealing ring in the prior art is weaker, the wear, fracture and aging are easy to occur after long-time use, the flexibility is gradually reduced, the sealing of the joint cannot be continuously ensured, and the practical use effect of the sealing ring in the prior art is poorer, the internal structural strength of the inner ring is enhanced by utilizing the support ring and the reinforcing rod which are arranged inside the inner ring, the nitrile rubber layer and the polyurethane layer which are arranged inside the inner ring, the connection strength and the stability of the inner ring and the piston part are enhanced, the wear resistance of the clamping groove of the piston part is enhanced, the internal arc rod and the external arc rod which are arranged inside the outer ring are utilized, the internal reinforcing rib is enhanced, the connection tightness of the inner ring and the outer ring is enhanced by the diagonal brace, the elliptical structure is formed by the internal arc rod and the external arc rod, the expansion performance in the outer ring is enhanced, and through the oil duct and the expansion cavity, when the piston moves, a part of hydraulic oil enters the expansion cavity through the oil duct, an outward expansion force is formed at the outer ring part, the sliding sealing performance of the outer ring of the sealing ring and the cylinder wall of the hydraulic cylinder is improved, and the using effect of the sealing ring is well protected.

Claims

1. The utility model provides a strenghthened type rubber seal, its characterized in that includes: inner circle (1), inner circle (1) and outer lane (3), inside be provided with support ring (2), and the outside of support ring (2) is connected with stiffener (6), outer lane (3) are connected in the outside of inner circle (1), and the outer end of outer lane (3) has seted up inlet port (5) to the edge of outer lane (3) is provided with oblique guide portion (4), the inside of outer lane (3) is provided with interior arc pole (8), and the outside of interior arc pole (8) is provided with outer arc pole (9), the both ends of interior arc pole (8) and outer arc pole (9) are provided with link (12), and the inside of interior arc pole (8) and outer arc pole (9) is provided with strengthening rib (13).

2. The reinforced rubber sealing ring according to claim 1, wherein the cross section of the inner ring (1) and the outer ring (3) are both rectangular structures, the inner ring (1) is located in the middle of the inner side of the outer ring (3), and the support ring (2) penetrates through the inner ring (1).

3. The reinforced rubber sealing ring as claimed in claim 1, wherein the outer end of the support ring (2) is connected with a diagonal brace (7), the section of the diagonal brace (7) is arranged in a V-shaped structure, and the outer end of the diagonal brace (7) is inserted into the inner part of the outer ring (3) and connected with the inner arc rod (8).

4. A reinforced rubber sealing ring according to claim 1, characterized in that the inner arc rod (8) and the outer arc rod (9) are arranged in an oval structure with opposite arc openings, and the two ends of the inner arc rod (8) and the outer arc rod (9) are fixedly connected through the connecting end (12).

5. The reinforced rubber sealing ring according to claim 1, wherein the reinforcing rib (13) is configured as an M-shaped structure, and the open end of the M-shape faces outwards and is fixedly connected with the outer arc rod (9), and the other end is fixedly connected with the inner arc rod (8).

6. The reinforced rubber sealing ring according to claim 1, wherein an oil duct (10) is formed inside the outer ring (3), one end of the oil duct (10) is communicated with the oil inlet (5), and the other end of the oil duct is communicated with an expansion cavity (11) formed inside the outer ring (3).

7. A reinforced rubber sealing ring according to claim 1, characterized in that the inner ring (1) is provided with a ring structure consisting of an inner layer of nitrile rubber (15) and an outer layer of polyurethane (14), and the outer ring (3) is provided with a ring structure consisting of an inner layer of polytetrafluoroethylene (17) and an outer layer of nylon (16).