A seal structure for a hydraulic valve

Abstract

The utility model provides a kind of sealing structure for hydraulic valve belongs to sealing structure technical field, including connecting pipe, the symmetrical connecting ring of both ends of connecting pipe is connected, and elastic component is equipped with the through in connecting pipe outer camber side surface, transmission component is connected with the through in the side of connecting pipe away from elastic component, for driving control to valve body, the elastic component includes with the elastic shell that the connecting pipe outer camber through vertical connection, elastic shell inner diameter is greater than the connecting pipe inner diameter, the connecting pipe wall thickness is greater than the elastic shell wall thickness, for the problem that traditional sealing structure gradually reduces sealing effect with time use, the utility model can keep sealing effect stable by the mode of excessive extrusion inside conical recess when sealing element appears wear by the combination of elastic sealing structure and elastic abutting structure.

Description

Technical Field

[0001] This utility model relates to the field of sealing structure technology, specifically to a sealing structure for hydraulic valves. Background Technology

[0002] A hydraulic valve is an automated component operated by pressurized oil. It is controlled by the pressurized oil of a pressure regulating valve and is usually used in combination with a solenoid pressure regulating valve. Existing hydraulic valves use single-layer gaskets at the connection points, resulting in poor sealing performance and leakage during use, which leads to waste of resources.

[0003] Chinese patent CN221171159U discloses a sealing structure for a hydraulic valve assembly. The above solution is used to achieve the sealing and shut-off control effect of the hydraulic valve.

[0004] However, the above-mentioned disclosed solutions have the following shortcomings: In actual use, the above solutions use a combination of screw thread and sealing ring to achieve the sealing effect. In actual use, this is not suitable for the shut-off effect of valve body sealing control. Furthermore, the above solutions use a traditional sealing ring structure for sealing. In actual use, due to the aging characteristics of the rubber structure, its sealing effect will decrease over time.

[0005] This invention proposes a sealing structure for hydraulic valves to solve the above-mentioned problems. Summary of the Invention

[0006] The purpose of this invention is to combine an elastic sealing structure with an elastic abutment structure to achieve the effect of sealing or opening inside the hydraulic control pipeline. Furthermore, the excessive compression effect of the conical groove structure ensures that the sealing effect remains stable even after long-term continuous use, thereby overcoming the problems mentioned in the background art.

[0007] Based on the above technical concept, the technical solution adopted by this utility model is as follows: A sealing structure for a hydraulic valve includes a connecting pipe with mating rings symmetrically connected to both ends of the connecting pipe. An elastic component is provided through the outer arc surface of the connecting pipe, and a transmission component is connected through the side of the connecting pipe away from the elastic component for driving and controlling the valve body.

[0008] Further defining the above technical solution, the elastic component includes an elastic shell that is perpendicularly connected to the outer arc surface of the connecting pipe. The inner diameter of the elastic shell is larger than the inner diameter of the connecting pipe, and the wall thickness of the connecting pipe is larger than the wall thickness of the elastic shell. The thicker wall of the connecting pipe structure ensures that the sealing structure can effectively seal the cross-section of the connecting pipe.

[0009] Further defining the above technical solution, a connecting shell is connected through the side of the connecting pipe away from the elastic shell, and a hydraulic drive rod is connected to the end of the connecting shell away from the connecting pipe. A control connector is connected to the outer side of the hydraulic drive rod. The control connector can reduce the difficulty of operation and control of this structure.

[0010] Further defining the above technical solution, the outer arc surface of the blocking seal is provided with a sealing ring. The outer arc surface of the sealing ring is arc-shaped, and the curvature of the outer arc surface of the sealing ring is the same as that of the inner arc surface of the connecting pipe. The sealing ring is made of flexible waterproof material. When the blocking seal is in a sealed state, the sealing ring contacts and presses against the center of the inner wall of the connecting pipe, thereby achieving the effect of filling the arc-shaped gap between the two sides of the blocking seal and the inner arc surface of the connecting pipe through the sealing ring. The inner arc surface of the connecting housing is connected to a spring mounting ring. One side of the spring mounting ring is connected to the hydraulic drive rod, and the other side of the spring mounting ring is connected to a plurality of abutment springs distributed circumferentially at equal intervals.

[0011] Further defining the above technical solution, the other end of the abutment spring is connected to a conical abutment member. The conical abutment member is annular in shape, and a conical groove is provided on the side of the conical abutment member facing the blocking seal. Through the docking effect of the conical abutment member and the blocking seal, a combined sealing effect can be achieved. At the same time, after the blocking seal is worn out, the conical abutment member provides excessive abutment to the blocking seal, thereby maintaining the stability of the sealing effect.

[0012] Further defining the above technical solution, the transmission component includes a blocking seal connected to the end of the spring away from the inner wall of the elastic housing. The blocking seal is slidably connected to the inner wall of the elastic housing, and the structure of the blocking seal can achieve the effect of sealing and blocking the inside of the connecting pipe.

[0013] Further defining the above technical solution, the end of the blocking seal away from the spring is provided with a conical protrusion, which contacts and presses against the conical groove of the conical abutment. The sealing ring contacts and presses against the joint between the connecting pipe and the elastic shell and the joint between the connecting pipe and the connecting shell. The use of a ring structure facilitates the subsequent sliding of the push rod.

[0014] Further defining the above technical solution, the hydraulic drive rod is connected to a push rod at its hydraulic drive end. The end of the push rod away from the hydraulic drive rod contacts and presses against the end of the blocking seal away from the spring. By pushing the elastically sliding single seal, the control switching effect can be achieved.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. Facilitates connection: The combination of connecting pipes and docking rings effectively improves the stability of the assembly and installation of this structure; 2. Accurate control: The hydraulic drive rod can be accurately controlled through the control joint, thereby causing the blocking seal 401 to retract inward, thus achieving the opening and conduction effect. 3. Continuous sealing: When the conical protrusion of the blocking seal wears down, the blocking seal will come into deeper contact with the conical groove inside the conical abutment, thus ensuring the stability of the mating seal. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the mating ring in a sealing structure for a hydraulic valve according to the present invention. Figure 2 This is a schematic diagram of the hydraulic drive rod in a sealing structure for a hydraulic valve according to the present invention. Figure 3 for Figure 1 A sectional view; Figure 4 This is a schematic diagram of the spring structure in a sealing structure for a hydraulic valve according to the present invention.

[0018] Among them, 1. connecting pipe; 2. docking ring; 3. elastic component; 301. elastic housing; 302. connecting housing; 303. hydraulic drive rod; 304. control joint; 305. spring; 4. transmission component; 401. blocking seal; 402. sealing ring; 403. spring mounting ring; 404. abutment spring; 405. conical abutment; 406. push rod. Detailed Implementation

[0019] The following is in conjunction with the appendix Figures 1-4 The present invention will be described in further detail below.

[0020] Example 1: This example provides a sealing structure for a hydraulic valve, such as... Figures 1-4 As shown, it includes a connecting pipe 1, with docking rings 2 symmetrically connected to both ends of the connecting pipe 1, and an elastic component 3 penetrating through the outer arc side of the connecting pipe 1. A transmission component 4 is penetrating through the side of the connecting pipe 1 away from the elastic component 3, which is used to drive and control the valve body.

[0021] The elastic component 3 includes an elastic housing 301 that is perpendicularly connected to the outer arc surface of the connecting pipe 1. The inner diameter of the elastic housing 301 is larger than the inner diameter of the connecting pipe 1, and the wall thickness of the connecting pipe 1 is larger than the wall thickness of the elastic housing 301. A connecting housing 302 is connected through the side of the connecting pipe 1 away from the elastic housing 301. A hydraulic drive rod 303 is connected to the end of the connecting housing 302 away from the connecting pipe 1. A control connector 304 is connected to the outer side of the hydraulic drive rod 303. The elastic structure ensures that the structure can achieve the effect of automatic sealing and reduces the operation difficulty of the structure.

[0022] The transmission component 4 includes a blocking seal 401 connected to one end of the spring 305 away from the inner wall of the elastic housing 301. The blocking seal 401 is slidably connected to the inner wall of the elastic housing 301. A sealing ring 402 is provided on the outer arc surface of the blocking seal 401. A spring mounting ring 403 is connected to the inner arc surface of the connecting housing 302. One side of the spring mounting ring 403 is connected to the hydraulic drive rod 303, and the other side of the spring mounting ring 403 is connected to a plurality of abutment springs 404 distributed circumferentially at equal intervals.

[0023] The specific working principle is as follows: This structure can achieve a sealing and shut-off effect on the inside of the connecting pipe 1. Compared with the traditional sealing structure, this structure uses a combination of a conical protrusion structure and a conical groove structure to ensure a stable sealing effect.

[0024] Example 2: This example provides a sealing structure for a hydraulic valve, such as... Figures 1-4 As shown, the other end of the abutment spring 404 is connected to a conical abutment member 405. The conical abutment member 405 is in the shape of a ring, and a conical groove is provided on the side of the conical abutment member 405 facing the blocking seal member 401.

[0025] The transmission component 4 includes a blocking seal 401 connected to one end of the spring 305 away from the inner wall of the elastic housing 301, and the blocking seal 401 is slidably connected to the inner wall of the elastic housing 301.

[0026] The end of the blocking seal 401 away from the spring 305 is provided with a conical protrusion. The conical protrusion contacts and presses against the conical groove of the conical abutment 405. The sealing ring 402 contacts and presses against the joint between the connecting pipe 1 and the elastic housing 301 and the joint between the connecting pipe 1 and the connecting housing 302.

[0027] The hydraulic drive rod 303 is connected to a push rod 406 at its hydraulic drive end. The end of the push rod 406 away from the hydraulic drive rod 303 contacts and presses against the end of the blocking seal 401 away from the spring 305.

[0028] The specific working principle is as follows: This structure can achieve a long-term stable sealing and shut-off effect. When this structure is used, the safety of the combined docking of this structure can be reduced through the docking ring 2.

[0029] Once the structure is assembled, the blocking seal 401 extends outward under the drive of the spring 305. At this time, the sealing ring 402 on the outer arc surface of the blocking seal 401 contacts and presses against the inner arc surface of the connecting pipe 1, thereby achieving a sealing and shut-off effect on the inside of the connecting pipe 1.

[0030] In the sealed state, the blocking seal 401 contacts and abuts against the conical abutment 405. At this time, the hydraulic drive rod 303 is controlled by the control connector 304, and then the blocking seal 401 is pushed by the push rod 406, thereby causing the blocking seal 401 to separate from the conical abutment 405. At this time, the inside of the connecting pipe 1 is in a conductive state.

[0031] As water flows and the sealing element 401 is washed away, its outer diameter decreases after a period of use. When it is in a sealed state, the conical groove structure provided by the conical abutment 405 allows the sealing element 401 to make deeper contact with the conical groove provided by the conical abutment 405, thereby achieving the effect of excessive wrapping and docking of the sealing element 401 by the conical abutment 405, and thus maintaining a stable sealing docking effect.

[0032] The above description is a further detailed explanation of the present invention in conjunction with specific preferred embodiments, which is intended to enable those skilled in the art to understand and apply the present invention. However, it should not be assumed that the specific implementation of the present invention is limited to these descriptions.

Claims

1. A sealing structure for a hydraulic valve, comprising a connecting pipe (1), wherein mating rings (2) are symmetrically connected to both ends of the connecting pipe (1), characterized in that, The outer arc side of the connecting pipe (1) is provided with a through elastic component (3), and the side of the connecting pipe (1) away from the elastic component (3) is connected to a transmission component (4) for driving and controlling the valve body.

2. The sealing structure for a hydraulic valve according to claim 1, characterized in that, The elastic component (3) includes an elastic shell (301) that is perpendicularly connected to the outer arc surface of the connecting pipe (1). The inner diameter of the elastic shell (301) is larger than the inner diameter of the connecting pipe (1), and the wall thickness of the connecting pipe (1) is larger than the wall thickness of the elastic shell (301).

3. A sealing structure for a hydraulic valve according to claim 2, characterized in that, The connecting pipe (1) is connected to the connecting housing (302) on the side away from the elastic housing (301). The end of the connecting housing (302) away from the connecting pipe (1) is connected to the hydraulic drive rod (303). The outer side of the hydraulic drive rod (303) is connected to the control connector (304).

4. A sealing structure for a hydraulic valve according to claim 3, characterized in that, The transmission component (4) includes a blocking seal (401) connected to one end of the spring (305) away from the inner wall of the elastic housing (301), and the blocking seal (401) is slidably connected to the inner wall of the elastic housing (301).

5. A sealing structure for a hydraulic valve according to claim 4, characterized in that, The outer arc surface of the blocking seal (401) is provided with a sealing ring (402), and the inner arc surface of the connecting housing (302) is connected with a spring mounting ring (403). One side of the spring mounting ring (403) is connected to the hydraulic drive rod (303), and the other side of the spring mounting ring (403) is connected to a number of abutment springs (404) that are distributed in a circular pattern at equal intervals.

6. A sealing structure for a hydraulic valve according to claim 5, characterized in that, The other end of the abutment spring (404) is connected to a conical abutment (405), which is annular in shape and has a conical groove on the side facing the blocking seal (401).

7. A sealing structure for a hydraulic valve according to claim 6, characterized in that, The blocking seal (401) has a conical protrusion at one end away from the spring (305). The conical protrusion contacts and presses against the conical groove of the conical abutment (405). The sealing ring (402) contacts and presses against the joint between the connecting pipe (1) and the elastic shell (301) and the joint between the connecting pipe (1) and the connecting shell (302).

8. A sealing structure for a hydraulic valve according to claim 7, characterized in that, The hydraulic drive rod (303) is connected to a push rod (406) at its hydraulic drive end. The end of the push rod (406) away from the hydraulic drive rod (303) contacts and presses against the end of the blocking seal (401) away from the spring (305).

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