Wear-resistant valve core of automobile valve

Abstract

The utility model discloses an automobile valve wear-resisting valve element which comprises a valve element body, a second communicating air hole is formed in the bottom end of the valve element body, first communicating air holes are formed in the two sides of the top end of the second communicating air hole, one end of each first communicating air hole is flush with the outer surface of the valve element body, and the other end of each first communicating air hole is flush with the outer surface of the valve element body. A plurality of sealing ring grooves which are distributed at equal intervals up and down are formed in the outer surface of the valve element body, and sealing rings are clamped to the inner sides of the sealing ring grooves. When the valve element body is abraded, the elastic filling ring and the elastic supporting strips elastically recover and apply pushing force to the sealing outer ring, so that the sealing outer ring slides outwards from the inner side of the sealing inner ring till the sealing outer ring makes contact with the inner wall of the valve body, and the sealing effect is improved. The sealing outer ring is extruded on the inner wall of the valve body through elastic recovery of the elastic filling ring and the elastic supporting strip, a gap between the valve element body and the valve body is sealed, the overall sealing performance of the valve is guaranteed, and the service life of the valve element body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile valve cores, in particular to a wear-resistant automobile valve core. Background Art

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters (temperature, pressure, and flow) of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc. Valves are divided into different valves according to different usage occasions, such as: water pipe valves, hydraulic rod valves, gas pipeline valves, automobile valves, hydraulic pipeline valves, etc.

[0003] Automobile valves are usually small and used in automobile accessories. Automobile valves are composed of valve body, valve stem, valve core and other components. The valve core is the valve part that the valve body uses its movement to achieve the basic functions of direction control, pressure control or flow control. The opening and closing of the valve are controlled by the movement of the valve core.

[0004] However, the existing automobile valve core will wear out due to long-term use, resulting in a decrease in valve sealing performance; therefore, it does not meet the existing needs. In this regard, we propose a wear-resistant valve core for automobile valves. Utility Model Content

[0005] The utility model aims to provide a wear-resistant valve core for automobile valves, so as to solve the problem that the valve sealing performance of the existing automobile valve cores mentioned in the above background technology is reduced due to valve core wear after long-term use.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wear-resistant valve core of an automobile valve, comprising a valve core body, a second communicating air hole is provided at the bottom end of the valve core body, first communicating air holes are provided on both sides of the top end of the second communicating air hole, one end of the first communicating air hole is flush with the outer surface of the valve core body, and a plurality of sealing ring grooves are provided on the outer surface of the valve core body with equal intervals up and down, and a sealing ring is clamped on the inner side of the sealing ring groove.

[0007] Preferably, the sealing ring comprises a sealing inner ring, the inner side of which is slidably mounted with a plurality of sealing outer rings, and the plurality of sealing outer rings are distributed in a circular array around the center of the sealing inner ring.

[0008] Preferably, every two adjacent ends of the sealing outer ring and the end bracket are provided with a sealing rubber connecting block, and the end of the sealing rubber connecting block is fixed to the end of the sealing outer ring by bonding with a sealant.

[0009] Preferably, a positioning groove is provided on the inner side of the sealing outer ring, and an elastic filling ring is clamped on the inner side of the positioning groove.

[0010] Preferably, one side edge of the elastic filling ring is in contact with the inner wall of the sealing inner ring, and the elastic filling ring is in a compressed state.

[0011] Preferably, two symmetrically distributed elastic support strips are provided on the inner side of the elastic filling ring, and the elastic support strips are bent in a V-shape.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. When the valve core body of the utility model is worn, the elastic filling ring and the elastic support strip elastically recover and apply pressure thrust to the sealing outer ring, so that the sealing outer ring slides outward from the inner side of the sealing inner ring until the sealing outer ring contacts the inner wall of the valve body. Due to the movement of the sealing outer ring, the distance between the ends of two adjacent sealing outer rings increases. At the same time, the sealing outer ring stretches the sealing rubber connecting block when it moves, and the stretched sealing rubber connecting block fills the gap between the two adjacent sealing outer rings. The sealing outer ring is squeezed against the inner wall of the valve body through the elastic recovery of the elastic filling ring and the elastic support strip, and the gap between the valve core body and the valve body is closed, thereby ensuring the overall sealing performance of the valve and extending the service life of the valve core body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the valve core body of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the sealing ring of the utility model;

[0017] Figure 4 It is a cross-sectional schematic diagram of the sealing rubber connecting block of the utility model.

[0018] In the figure: 1. valve core body; 2. first communicating air hole; 3. sealing ring; 31. sealing inner ring; 32. sealing outer ring; 33. positioning groove; 34. elastic filling ring; 35. elastic support strip; 36. sealing rubber connecting block; 4. sealing ring groove; 5. second communicating air hole. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] like Figures 1 to 4As shown, a wear-resistant valve core of an automobile valve is provided, a second communicating air hole 5 is provided at the bottom end of the valve core body 1, first communicating air holes 2 are provided on both sides of the top of the second communicating air hole 5, one end of the first communicating air hole 2 is flush with the outer surface of the valve core body 1, and a plurality of sealing ring grooves 4 are provided on the outer surface of the valve core body 1 at equal intervals up and down, and a sealing ring 3 is clamped on the inner side of the sealing ring groove 4, and the gap between the valve core body 1 and the valve core is sealed and filled by the sealing ring 3 to ensure the sealing performance of the valve.

[0021] The sealing ring 3 includes a sealing inner ring 31, and a plurality of sealing outer rings 32 are slidably mounted on the inner side of the sealing inner ring 31. The plurality of sealing outer rings 32 are distributed in a circular array around the center of the sealing inner ring 31. The ends of every two adjacent sealing outer rings 32 and the end brackets are provided with sealing rubber connecting blocks 36. The ends of the sealing rubber connecting blocks 36 and the ends of the sealing outer rings 32 are bonded and fixed by sealing glue. The sealing rubber connecting blocks 36 are ductile, and after the sealing outer ring 32 moves, it is ensured that no gap will appear between the ends of two adjacent sealing outer rings 32.

[0022] A positioning groove 33 is provided on the inner side of the sealing outer ring 32, and an elastic filling ring 34 is clamped on the inner side of the positioning groove 33. One side edge of the elastic filling ring 34 fits against the inner wall of the sealing inner ring 31. The elastic filling ring 34 is in a compressed state. The elastic filling ring 34 is used to isolate and support the sealing outer ring 32 and the sealing inner ring 31. After the sealing outer ring 32 is worn, the elastic filling ring 34 elastically recovers and squeezes the sealing outer ring 32 toward the valve body. The moving sealing outer ring 32 is used to ensure the airtightness between the valve core body 1 and the valve body.

[0023] Two symmetrically distributed elastic support strips 35 are provided on the inner side of the elastic filling ring 34. The elastic support strips 35 are bent in a V shape. The elastic support strips 35 are used to support the inside of the elastic filling ring 34, thereby increasing the elasticity of the elastic filling ring 34 and preventing the elastic filling ring 34 from breaking after compression.

[0024] Working principle: During the use of the valve, the valve core body 1 is worn due to long-term friction with the inner wall of the valve body. At this time, a gap appears between the outer surface of the valve core body 1 and the valve body. At this time, the elastic filling ring 34 and the elastic support strip 35 elastically recover and apply pressure to the sealing outer ring 32, so that the sealing outer ring 32 slides outward from the inside of the sealing inner ring 31 until the sealing outer ring 32 contacts the inner wall of the valve body. Due to the movement of the sealing outer ring 32, the distance between the ends of the two adjacent sealing outer rings 32 increases. At the same time, the sealing outer ring 32 stretches the sealing rubber connecting block 36 when it moves, and the stretched sealing rubber connecting block 36 fills the gap between the two adjacent sealing outer rings 32. The sealing outer ring 32 is squeezed against the inner wall of the valve body through the elastic recovery of the elastic filling ring 34 and the elastic support strip 35, and the gap between the valve core body 1 and the valve body is closed, thereby ensuring the overall sealing performance of the valve and extending the service life of the valve core body 1.

[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A wear-resistant valve core for automobile valves, comprising a valve core body (1), characterized in that: A second communicating air hole (5) is provided at the bottom end of the valve core body (1), first communicating air holes (2) are provided on both sides of the top end of the second communicating air hole (5), one end of the first communicating air hole (2) is flush with the outer surface of the valve core body (1), and a plurality of sealing ring grooves (4) are provided on the outer surface of the valve core body (1) at equal intervals up and down, and a sealing ring (3) is clamped on the inner side of the sealing ring groove (4).

2. The wear-resistant valve core of an automobile valve according to claim 1, characterized in that: The sealing ring (3) comprises a sealing inner ring (31), the inner side of which is slidably mounted a plurality of sealing outer rings (32), wherein the plurality of sealing outer rings (32) are distributed in a circular array around the center of the sealing inner ring (31).

3. The wear-resistant valve core of an automobile valve according to claim 2, characterized in that: Each of the ends of two adjacent sealing outer rings (32) and the end bracket is provided with a sealing rubber connecting block (36), and the end of the sealing rubber connecting block (36) and the end of the sealing outer ring (32) are bonded and fixed by means of sealing glue.

4. The wear-resistant valve core of an automobile valve according to claim 2, characterized in that: A positioning groove (33) is provided on the inner side of the sealing outer ring (32), and an elastic filling ring (34) is clamped on the inner side of the positioning groove (33).

5. The wear-resistant valve core of an automobile valve according to claim 4, characterized in that: One side edge of the elastic filling ring (34) is in contact with the inner wall of the sealing inner ring (31), and the elastic filling ring (34) is in a compressed state.

6. The wear-resistant valve core of an automobile valve according to claim 5, characterized in that: Two symmetrically distributed elastic support strips (35) are provided on the inner side of the elastic filling ring (34), and the elastic support strips (35) are bent in a V shape.

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