Combined sealing ring

Abstract

The utility model discloses a combined sealing ring, which relates to the technical field of sealing rings and comprises a sealing component and a pressing component. The sealing assembly comprises a main sealing ring, a first partial pressure groove is formed in the top end of the main sealing ring, the longitudinal section of the first partial pressure groove is of a trapezoidal structure, and a first groove is formed in the inner wall of the bottom end of the first partial pressure groove; the pressing assembly comprises a pressing block and a reinforcing assembly, and the pressing block is slidably arranged on the inner wall of the first partial pressure groove; the sealing device has the advantages that the spring extends and pushes the pressing block, the pressing block pushes the main sealing ring through the first partial pressure groove, the main sealing ring is made to deform and be tightly attached to the inner wall of the plugging opening, sealing is achieved, after the main sealing ring is aged, the elasticity of the sealing ring is reduced, the spring pushes the main sealing ring through the transmission ring, the pressing block and the first partial pressure groove, and sealing is achieved. And deformation of the main sealing ring is maintained, so that the sealing effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to a sealing ring, in particular to a combined sealing ring, and belongs to the technical field of sealing rings. Background Art

[0002] Sealing rings are important accessories for hydraulic components. Sealing rings are divided into static seals and reciprocating seals, which are used to prevent leakage of hydraulic oil or lubricating oil and ensure the normal operation of hydraulic components.

[0003] Among them, the "piston sealing ring" disclosed in the application number "CN202223003382.2" "comprises a sealing ring body and a pressing component, the pressing component is located at the top of the sealing ring body, the pressing component includes a hollow ring body, and a cavity is arranged on the inner side of the hollow ring body. In the utility model, when the piston sealing ring makes piston movement up and down, if it is used for plugging, the hollow ring body will contact with the plugging end in advance, and under the influence of the pulling force, the hollow ring body will be flattened by the force, and at the same time, the gas located inside the cavity will be squeezed, the position of the gas located inside the cavity will be changed, and the contact area between the top of the hollow ring body and the plugging end will be increased. When it is not used for plugging, the hollow ring body will be directly reset under the influence of the internal gas, ensuring that there is a certain gap between the hollow ring body and the plugging end, so that the friction resistance encountered during the piston movement is small, which is convenient for operation, which can ensure the sealing performance of the plugging and reduce the difficulty of operation". A search revealed that the "O-ring" disclosed in its application number "CN202321921808.4" "comprises a sealing ring body, the sealing ring body is composed of an outer sealing ring, an inner sealing ring and a connecting ring, the outer sealing ring is arranged on the outside of the inner sealing ring, the connecting ring is between the outer sealing ring and the inner sealing ring, the outer sealing ring, the inner sealing ring and the connecting ring are coaxially arranged and are an integrated structure, the outer sealing ring is provided with an outer expansion cavity inside, and the inner sealing ring is provided with an inner expansion cavity inside; the sealing ring body of the utility model is provided with an outer expansion cavity and an inner expansion cavity which are separated and sealed from each other. When in use, the sealing ring body is squeezed by components to make the outer sealing ring expand outward and the inner sealing ring expand inward, thereby achieving the purpose of improving the sealing effect; and since the outer expansion cavity and the inner expansion cavity are independent of each other, even if one of the cavities leaks, it will not immediately lead to sealing failure."

[0004] However, the above two methods still have the following defects: by opening a sealed cavity inside the hollow ring body, the hollow ring body expands due to the air pressure inside the cavity, thereby increasing the contact area between the hollow ring body and the sealing port; when the elasticity of the hollow ring body is weakened due to aging, the degree of expansion decreases, the contact area between the hollow ring body and the sealing port is reduced, and the sealing effect is reduced. Utility Model Content

[0005] The utility model aims to provide a combined sealing ring to solve the problem that the expansion degree of the existing hollow ring body that expands under pressure decreases after aging, thereby reducing the sealing effect.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a combined sealing ring, including a sealing component and a clamping component; the sealing component includes a main sealing ring, the top of the main sealing ring is provided with a first pressure dividing groove, the longitudinal section of the first pressure dividing groove is set as a trapezoidal structure, and the inner wall of the bottom end of the first pressure dividing groove is provided with a first groove; the clamping component includes a pressing block and a reinforcing component, the pressing block is slidably arranged on the inner wall of the first pressure dividing groove, the surface of the pressing block is provided with a transmission ring, the surface of the pressing block is slidably connected with a moving seat, the surface of the moving seat is provided with a pressing ring, and a spring is provided between the pressing ring and the transmission ring.

[0007] As a preferred technical solution of the utility model, a retaining ring is provided at the top of the movable seat, a prying hole is provided on the surface of the retaining ring, a limiting rod is provided at one end of the retaining ring, one end of the limiting rod is slidably connected to one end of the transmission ring, and an anti-slip groove is provided on the surface of the movable seat.

[0008] As a preferred technical solution of the utility model, a through hole is opened on the surface of the pressure ring, the inner wall of the through hole is slidably connected to the surface of the limiting rod, and the spring sleeve is arranged outside the limiting rod.

[0009] As a preferred technical solution of the utility model, a guide hole is opened at one end of the limit rod, the inner wall of the guide hole is slidably connected with a guide rod, and one end of the guide rod is connected to one end of the transmission ring.

[0010] As a preferred technical solution of the utility model, the inner wall of the anti-slip groove is slidably connected with an anti-slip block, the longitudinal section of the anti-slip block is set as an L-shaped structure, and the bottom end of the anti-slip block is connected to the top end of the pressing block.

[0011] As a preferred technical solution of the utility model, the reinforcement assembly includes two arc seats, the two arc seats are both arranged at the top of the retaining ring, the top of the two arc seats are each provided with an arc groove, the inner walls of the two arc grooves are both slidably connected with an arc plate, the top of the two arc plates are provided with a reinforcement block, and the surface of the reinforcement block is slidably connected with a secondary sealing ring.

[0012] As a preferred technical solution of the utility model, a second pressure dividing groove sliding with the surface of the reinforcement block is provided at the bottom end of the secondary sealing ring, the longitudinal section of the second pressure dividing groove and the longitudinal section of the reinforcement block are both arranged as a trapezoidal structure, and a second groove is provided on the inner wall at the top end of the second pressure dividing groove.

[0013] As a preferred technical solution of the utility model, the surfaces of the two arc-shaped seats are provided with slide grooves connected to the arc-shaped grooves, the inner walls of the two slide grooves are slidably connected with prying plates, and the surfaces of the two prying plates are respectively connected to the surfaces of the two arc-shaped plates.

[0014] Compared with the related art, the combined sealing ring provided by the utility model has the following beneficial effects:

[0015] 1. The spring stretches and pushes the pressing block, which pushes the main sealing ring through the first pressure dividing groove, causing the main sealing ring to deform and cling to the inner wall of the sealing port to achieve sealing. When the main sealing ring ages, the elasticity of the sealing ring decreases, and the spring pushes the main sealing ring through the transmission ring, the pressing block and the first pressure dividing groove to maintain the deformation of the main sealing ring, thereby ensuring the sealing effect;

[0016] 2. Move the auxiliary sealing ring to make it sleeved on the outside of the reinforcing block. The reinforcing block presses the auxiliary sealing ring through the second pressure dividing groove, so that the auxiliary sealing ring fits the sealing port to achieve sealing. Double sealing is achieved through the cooperation of the auxiliary sealing ring and the main sealing ring to improve the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is one of the cross-sectional structural schematic diagrams of the utility model;

[0019] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure at point A;

[0020] Figure 4 This is the second schematic diagram of the cross-sectional structure of the utility model;

[0021] Figure 5 For this utility model Figure 4 A schematic diagram of the enlarged structure at B;

[0022] Figure 6 It is a schematic diagram of the top cross-sectional structure of the utility model.

[0023] In the figure: 1. sealing assembly; 101. main sealing ring; 102. first pressure dividing groove; 103. first groove; 2. clamping assembly; 201. pressure block; 202. transmission ring; 203. moving seat; 204. pressure ring; 205. spring; 206. retaining ring; 207. prying hole; 208. limiting rod; 209. anti-slip groove; 210. through hole; 211. guide hole; 212. guide rod; 213. anti-slip block; 3. reinforcement assembly; 301. arc seat; 302. arc groove; 303. arc plate; 304. reinforcement block; 305. secondary sealing ring; 306. second pressure dividing groove; 307. second groove; 308. slide groove; 309. prying plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment 1:

[0026] See also Figure 1-6 , the utility model provides a combined sealing ring, including a sealing component 1 and a pressing component 2;

[0027] The sealing assembly 1 comprises a main sealing ring 101, a first pressure dividing groove 102 is provided at the top of the main sealing ring 101, a longitudinal section of the first pressure dividing groove 102 is arranged in a trapezoidal structure, and a first groove 103 is provided on the inner wall at the bottom of the first pressure dividing groove 102;

[0028] Specifically, the main sealing ring 101 is slid downward into the sealing opening until it is pressed against the sealing opening, and the main sealing ring 101 is squeezed downward by the pressing block 201 of the clamping assembly 2. The first pressure dividing groove 102 is subjected to vertical downward pressure, and the first pressure dividing groove 102 decomposes the pressure into a force along the inclined direction of the first pressure dividing groove 102 and a force perpendicular to the inclined direction, thereby pressing the main sealing ring 101, causing the main sealing ring 101 to deform and fit tightly against the inner wall of the sealing opening to enhance the sealing effect. The first groove 103 is arranged to prevent the inner wall of the bottom end of the first pressure dividing groove 102 from pressing against the pressing block 201.

[0029] Embodiment 2:

[0030] The clamping assembly 2 includes a pressing block 201 and a reinforcing assembly 3. The pressing block 201 is slidably arranged on the inner wall of the first pressure dividing groove 102. A transmission ring 202 is fixedly arranged on the surface of the pressing block 201. A moving seat 203 is slidably connected to the surface of the pressing block 201. A pressing ring 204 is fixedly arranged on the surface of the moving seat 203. A spring 205 is fixedly arranged between the pressing ring 204 and the transmission ring 202. Twenty springs 205 are arranged.

[0031] A retaining ring 206 is fixedly provided on the top of the movable seat 203, and a prying hole 207 is provided on the surface of the retaining ring 206. A limiting rod 208 is fixedly provided on one end of the retaining ring 206, and there are twenty limiting rods 208. One end of the limiting rod 208 is slidably connected to one end of the transmission ring 202. An anti-slip groove 209 is provided on the surface of the movable seat 203, and there are twenty anti-slip grooves 209. The clamping assembly 2 and the sealing assembly 1 are of a split structure. When the clamping assembly 2 needs to be disassembled, one end of the screwdriver is inserted into the prying hole 207 and the retaining ring 206 is tilted, thereby driving the movable seat 203 to move upward, so as to facilitate the removal of the clamping assembly 2.

[0032] The surface of the pressure ring 204 is provided with through holes 210, and there are twenty through holes 210. The inner wall of the through hole 210 is slidably connected with the surface of the limit rod 208. The spring 205 is sleeved on the outside of the limit rod 208, and the pressure ring 204 slides along the surface of the limit rod 208 through the through holes 210.

[0033] A guide hole 211 is provided at one end of the limit rod 208, and a guide rod 212 is slidably connected to the inner wall of the guide hole 211. One end of the guide rod 212 is fixedly connected to one end of the transmission ring 202. After the blocking end of the compression reinforcement component 3 is disassembled, the spring 205 stretches and pushes the pressure ring 204 to move downward, and the limit rod 208 slides relative to the guide rod 212 along the inner wall of the guide hole 211. The limit rod 208 cooperates with the guide rod 212 to prevent the spring 205 from being excessively twisted.

[0034] The inner wall of the anti-slip groove 209 is slidably connected with an anti-slip block 213, and the longitudinal section of the anti-slip block 213 is set to an L-shaped structure. The bottom end of the anti-slip block 213 is fixedly connected to the top of the pressing block 201. When the spring 205 is extended, the anti-slip block 213 slides along the anti-slip groove 209 until the anti-slip block 213 is resisted by the anti-slip groove 209, thereby preventing the moving seat 203 from being completely separated from the pressing block 201. In addition, the anti-slip groove 209 cooperates with the anti-slip block 213 to prevent the moving seat 203 and the pressing block 201 from rotating relative to each other, thereby preventing the spring 205 from being damaged due to the rotation of the moving seat 203.

[0035] Specifically, after placing the sealing component 1, the pressing component 2 is moved downward to make the pressing block 201 fit the first pressure dividing groove 102, and the pressing component 2 is continued to be moved, so that the moving seat 203 and the pressing block 201 slide relative to each other, and the moving seat 203 drives the retaining ring 206 and the pressing ring 204 to slide downward, and the distance between the pressing ring 204 and the transmission ring 202 is gradually shortened, and the pressing ring 204 squeezes the spring 205 until the moving seat 203 is held against by the pressing block 201, and then the reinforcing component 3 is installed and screwed into the sealing end Block the reinforcing component 3. At this time, the spring 205 stretches and pushes the pressing block 201. The pressing block 201 pushes the main sealing ring 101 through the first pressure dividing groove 102, causing the main sealing ring 101 to deform and fit tightly against the inner wall of the sealing port to achieve sealing. When the main sealing ring 101 ages, the elasticity of the sealing ring 101 decreases. The spring 205 pushes the main sealing ring 101 through the transmission ring 202, the pressing block 201 and the first pressure dividing groove 102 to maintain the deformation of the main sealing ring 101, thereby ensuring the sealing effect.

[0036] Embodiment 3:

[0037] The reinforcement assembly 3 includes two arc seats 301, both of which are fixedly arranged at the top of the retaining ring 206, and both of which are provided with arc grooves 302 at the tops of the two arc seats 301. The inner walls of the two arc grooves 302 are slidably connected with arc plates 303, and the tops of the two arc plates 303 are fixedly provided with reinforcement blocks 304, and the surfaces of the reinforcement blocks 304 are slidably connected with auxiliary sealing rings 305;

[0038] A second pressure dividing groove 306 is provided at the bottom end of the secondary sealing ring 305 to slide with the surface of the reinforcing block 304. The longitudinal sections of the second pressure dividing groove 306 and the reinforcing block 304 are both arranged in a trapezoidal structure. A second groove 307 is provided on the inner wall at the top end of the second pressure dividing groove 306. The second groove 307 prevents the inner wall at the top end of the second pressure dividing groove 306 from abutting against the reinforcing block 304.

[0039] The surfaces of the two arc seats 301 are provided with slide grooves 308 connected with the arc grooves 302. The inner walls of the two slide grooves 308 are slidably connected with prying plates 309. The surfaces of the two prying plates 309 are respectively fixedly connected with the surfaces of the two arc plates 303. One end of a screwdriver abuts against the prying plates 309, and the prying plates 309 and the arc plates 303 are tilted up, so that the arc plates 303 are separated from the arc grooves 302, so as to facilitate the removal of the reinforcing block 304.

[0040] Specifically, after placing the clamping component 2, the reinforcing block 304 is moved, and the reinforcing block 304 drives the arc plate 303 to move, causing the arc plate 303 to slide into the interior of the arc groove 302, completing the installation of the reinforcing block 304, and then the secondary sealing ring 305 is moved to be sleeved on the outside of the reinforcing block 304, pushing the secondary sealing ring 305 downward, and the reinforcing block 304 presses the secondary sealing ring 305 through the second pressure dividing groove 306, causing the secondary sealing ring 305 to fit the sealing port to achieve sealing, and finally, the sealing end component is screwed into the sealing port to abut the secondary sealing ring 305, and double sealing is achieved through the cooperation of the secondary sealing ring 305 and the main sealing ring 101, thereby improving the sealing effect.

[0041] When in use, after placing the sealing component 1, move the pressing component 2 downward to make the pressing block 201 fit the first pressure dividing groove 102, continue to move the pressing component 2, the moving seat 203 and the pressing block 201 slide relative to each other, the moving seat 203 drives the retaining ring 206 and the pressing ring 204 to slide downward, the distance between the pressing ring 204 and the transmission ring 202 is gradually shortened, and the pressing ring 204 squeezes the spring 205 until the moving seat 203 is held against by the pressing block 201, then install the reinforcing component 3 and screw in the sealing end The reinforcing component 3 is blocked. At this time, the spring 205 stretches and pushes the pressing block 201. The pressing block 201 pushes the main sealing ring 101 through the first pressure dividing groove 102, causing the main sealing ring 101 to deform and cling to the inner wall of the sealing port to achieve sealing. When the main sealing ring 101 ages, the elasticity of the sealing ring 101 decreases. The spring 205 pushes the main sealing ring 101 through the transmission ring 202, the pressing block 201 and the first pressure dividing groove 102 to maintain the deformation of the main sealing ring 101, thereby ensuring the sealing effect.

[0042] When installing the reinforcing assembly 3, first move the reinforcing block 304, and the reinforcing block 304 drives the arc plate 303 to move, so that the arc plate 303 slides into the arc groove 302, and then move the secondary sealing ring 305, so that it is sleeved on the outside of the reinforcing block 304, and pushes the secondary sealing ring 305 downward, and the reinforcing block 304 presses the secondary sealing ring 305 through the second pressure dividing groove 306, so that the secondary sealing ring 305 fits the sealing port to achieve sealing, and finally, the sealing end component is screwed into the sealing port to abut the secondary sealing ring 305, and the secondary sealing ring 305 and the main sealing ring 101 cooperate to achieve double sealing, thereby improving the sealing effect;

[0043] The clamping assembly 2 and the sealing assembly 1 are split structures. When the clamping assembly 2 needs to be removed, one end of the screwdriver is inserted into the prying hole 207 and the retaining ring 206 is lifted, thereby driving the movable seat 203 to move upward, making it easier to remove the clamping assembly 2.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined sealing ring, characterized in that: include A sealing assembly (1); the sealing assembly (1) comprises a main sealing ring (101), a first pressure dividing groove (102) is provided at the top end of the main sealing ring (101), a longitudinal section of the first pressure dividing groove (102) is arranged in a trapezoidal structure, and a first groove (103) is provided on the inner wall of the bottom end of the first pressure dividing groove (102); A clamping assembly (2); the clamping assembly (2) comprises a clamping block (201) and a reinforcing assembly (3); the clamping block (201) is slidably arranged on the inner wall of a first pressure dividing groove (102); a transmission ring (202) is provided on the surface of the clamping block (201); a movable seat (203) is slidably connected to the surface of the clamping block (201); a clamping ring (204) is provided on the surface of the movable seat (203); a spring (205) is provided between the clamping ring (204) and the transmission ring (202).

2. A combined sealing ring according to claim 1, characterized in that: A retaining ring (206) is provided at the top of the movable seat (203), a prying hole (207) is provided on the surface of the retaining ring (206), a limiting rod (208) is provided at one end of the retaining ring (206), one end of the limiting rod (208) is slidably connected to one end of the transmission ring (202), and an anti-slip groove (209) is provided on the surface of the movable seat (203).

3. A combined sealing ring according to claim 2, characterized in that: A through hole (210) is provided on the surface of the pressure ring (204), the inner wall of the through hole (210) is slidably connected to the surface of the limiting rod (208), and the spring (205) is sleeved on the outside of the limiting rod (208).

4. The combined sealing ring according to claim 2, characterized in that: A guide hole (211) is formed at one end of the limiting rod (208), a guide rod (212) is slidably connected to the inner wall of the guide hole (211), and one end of the guide rod (212) is connected to one end of the transmission ring (202).

5. The combined sealing ring according to claim 2, characterized in that: The inner wall of the anti-slip groove (209) is slidably connected with an anti-slip block (213), the longitudinal section of the anti-slip block (213) is arranged in an L-shaped structure, and the bottom end of the anti-slip block (213) is connected to the top end of the pressing block (201).

6. The combined sealing ring according to claim 2, characterized in that: The reinforcing assembly (3) comprises two arc seats (301), the two arc seats (301) are both arranged at the top of the retaining ring (206), the top of the two arc seats (301) are both provided with an arc groove (302), the inner walls of the two arc grooves (302) are both slidably connected with an arc plate (303), the top of the two arc plates (303) are provided with a reinforcing block (304), and the surface of the reinforcing block (304) is slidably connected with a secondary sealing ring (305).

7. The combined sealing ring according to claim 6, characterized in that: A second pressure dividing groove (306) is provided at the bottom end of the secondary sealing ring (305) and is slidable with the surface of the reinforcing block (304); the longitudinal sections of the second pressure dividing groove (306) and the longitudinal sections of the reinforcing block (304) are both arranged in a trapezoidal structure; and a second groove (307) is provided on the inner wall of the top end of the second pressure dividing groove (306).

8. The combined sealing ring according to claim 6, characterized in that: The surfaces of the two arc seats (301) are provided with sliding grooves (308) connected to the arc grooves (302), the inner walls of the two sliding grooves (308) are slidably connected with prying plates (309), and the surfaces of the two prying plates (309) are respectively connected to the surfaces of the two arc plates (303).

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