A pressure-resistant valve core

Abstract

The utility model relates to the field of valve cores, and discloses a pressure-resistant valve core, including a base, wherein a moving ceramic piece is provided at the center of the lower end surface of the base. A static ceramic piece is provided at the center of the lower end surface of the moving ceramic piece, and a valve stem is provided at the center of the lower end surface of the static ceramic piece. The outer wall of the valve stem is provided with a second wear-resistant structure, and the outer wall of the second wear-resistant structure is sleeved with a valve shell. O-rings are provided at the upper and lower parts of the center of the outer wall of the valve stem and the upper part of the center of the outer wall of the valve shell, and the outer wall of the valve shell is sleeved with a first wear-resistant structure. In the utility model, the second wear-resistant structure and the first wear-resistant structure composed of a protective layer and a wear-resistant layer of the valve stem and the valve shell, this layered and functionally clear wear-resistant design effectively improves the wear resistance of the valve stem and the valve shell, greatly prolongs the service life of the valve core, reduces the cost of maintenance and replacement, and ensures the stability and reliability of the valve core by using an O-ring made of rubber.

Description

Technical Field

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

[0002] A pressure-resistant valve core refers to a core valve component that can maintain stable working performance under high-pressure environments. In industrial applications, especially in the petroleum, chemical, electric power, metallurgy and other industries, valves often need to work under harsh conditions such as high pressure, high temperature, and corrosive media. The design and manufacturing technology of pressure-resistant valve cores is crucial to ensuring the reliability and safety of valves.

[0003] In the existing pressure-resistant valve core, the valve stem and the valve housing are easily worn due to long-term operation, which shortens the service life and increases the maintenance and replacement costs. In addition, it may rely on metal-to-metal sealing, which may not be reliable enough in some cases, especially under working conditions with large temperature changes or pressure fluctuations. Therefore, those skilled in the art provide a pressure-resistant valve core to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art, and a pressure-resistant valve core is proposed. A second wear-resistant structure and a first wear-resistant structure composed of a protective layer and a wear-resistant layer are respectively arranged on the valve stem and the valve housing. This layered and functionally clear wear-resistant design effectively improves the wear resistance of the valve stem and the valve housing, greatly prolongs the service life of the valve core, and reduces the maintenance and replacement costs. By adopting an O-ring made of rubber material, its good elasticity is utilized to extrude and deform after installation to fill the gap between the valve stem and the valve housing, thereby forming an effective seal, thereby improving the sealing performance of the valve core and ensuring the stability and reliability of the valve core. By adapting the static porcelain piece and the valve housing to each other in size and shape, the movement of the dynamic porcelain piece can be smoothly transmitted, so that the valve core will not be stuck or deviated during operation, thereby improving the accuracy and stability of the valve core movement.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pressure-resistant valve core, comprising a base, a moving ceramic piece is provided at the center of the lower end surface of the base. A static ceramic piece is provided at the center of the lower end surface of the moving ceramic piece, a valve stem is provided at the center of the lower end surface of the static ceramic piece, an outer wall of the valve stem is provided with a second wear-resistant structure, an outer wall of the second wear-resistant structure is sleeved with a valve shell, an O-ring is provided at the upper and lower center of the outer wall of the valve stem and the upper center of the outer wall of the valve shell, and an outer wall of the valve shell is sleeved with a first wear-resistant structure;

[0006] Through the above technical scheme, a second wear-resistant structure and a first wear-resistant structure consisting of a protective layer and a wear-resistant layer are respectively provided through the valve stem and the valve housing. This layered and functionally clear wear-resistant design effectively improves the wear resistance of the valve stem and the valve housing, greatly prolongs the service life of the valve core, and reduces the cost of maintenance and replacement. By adopting an O-ring made of rubber material, its good elasticity is utilized to extrude and deform after installation to fill the gap between the valve stem and the valve housing, thereby forming an effective seal, improving the sealing performance of the valve core, and ensuring the stability and reliability of the valve core. By adapting the size and shape of the static porcelain piece and the valve housing to each other, the movement of the dynamic porcelain piece can be smoothly transmitted, so that the valve core will not be stuck or deviated during operation, thereby improving the accuracy and stability of the valve core movement.

[0007] Further, the first wear-resistant structure includes a protective layer and a first wear-resistant layer, the protective layer is sleeved on the outer side wall of the valve housing, and the first wear-resistant layer is sleeved on the outer side wall of the protective layer;

[0008] Through the above technical solution, when the valve core is in operation and the valve housing contacts with external objects and generates relative movement, the outermost first wear-resistant layer is first subjected to friction and wear. The first wear-resistant layer has high hardness and wear resistance and can effectively resist external wear, while the inner protective layer plays a supporting and reinforcing role, preventing the first wear-resistant layer from deforming or rupturing when subjected to greater pressure and impact, thereby reducing the frequency of valve core failure and maintenance and replacement due to valve housing wear, and reducing the cost of use.

[0009] Furthermore, the second wear-resistant structure includes a protective layer and a second wear-resistant layer, the protective layer is sleeved on the outer side wall of the valve stem, and the second wear-resistant layer is sleeved on the outer side wall of the protective layer;

[0010] Through the above technical solution, during the operation of the valve core, the valve stem performs reciprocating motion. At this time, the second wear-resistant structure sleeved on the outer wall of the valve stem comes into play, and the outermost second wear-resistant layer directly contacts other components and bears friction. Due to its good wear-resistant properties, it can effectively resist the loss caused by friction. The internal protective layer provides support and buffer for the second wear-resistant layer, reduces the impact and pressure on the second wear-resistant layer, prevents it from excessive wear or rupture, significantly enhances the wear resistance of the valve stem, greatly extends the service life of the valve stem, reduces the frequency of valve core failures caused by valve stem wear, and reduces maintenance and replacement costs.

[0011] Furthermore, the three O-rings are made of rubber;

[0012] Through the above technical solution, the rubber O-ring has good elasticity. After the valve core is installed, the O-ring is squeezed to produce elastic deformation, filling the gap between the valve stem and the valve housing to form a seal.

[0013] Furthermore, the static ceramic sheet and the valve housing are adapted to each other;

[0014] Through the above technical solution, the size and shape of the static ceramic piece and the valve housing match each other. When the valve core is working, the movement of the dynamic ceramic piece is transmitted through the static ceramic piece, and the static ceramic piece can move smoothly in the valve housing without jamming or deviation.

[0015] Furthermore, a connection port is provided at the center of the lower end surface of the valve stem;

[0016] Through the above technical solution, the connection port is used to connect with an external driving device or actuator. When the external device applies force or movement, it is transmitted to the valve stem through the connection port, thereby driving the movement of the valve core.

[0017] Furthermore, an opening groove is provided at the upper center of both side walls of the valve housing;

[0018] Through the above technical solution, the open groove can be used to install components of a fixed valve housing, or as a part of a fluid channel.

[0019] The utility model has the following beneficial effects:

[0020] 1. In the utility model, a second wear-resistant structure and a first wear-resistant structure consisting of a protective layer and a wear-resistant layer are respectively arranged on the pressure-resistant valve core through the valve stem and the valve housing. This layered and functionally clear wear-resistant design effectively improves the wear resistance of the valve stem and the valve housing, greatly prolongs the service life of the valve core, and reduces the cost of maintenance and replacement.

[0021] 2. In the utility model, an O-ring made of rubber material is used, and its good elasticity is utilized to be squeezed and deformed after installation to fill the gap between the valve stem and the valve housing, thereby forming an effective seal, improving the sealing performance of the valve core, and ensuring the stability and reliability of the valve core.

[0022] 3. In the utility model, the static ceramic piece and the valve housing are adapted to each other in size and shape to ensure that the movement of the dynamic ceramic piece can be transmitted smoothly, so that the valve core will not be stuck or deviated during operation, thereby improving the accuracy and stability of the valve core movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of a pressure-resistant valve core proposed by the utility model;

[0024] Figure 2 This is a front cross-sectional view of a pressure-resistant valve core proposed by the utility model;

[0025] Figure 3 A side sectional view of a pressure-resistant valve core proposed by the utility model;

[0026] Figure 4 for Figure 2 A magnified schematic diagram of center A.

[0027] Legend:

[0028] 1. Base; 2. Moving porcelain; 3. Static porcelain; 4. Valve housing; 5. First wear-resistant structure; 501. Protective layer; 502. First wear-resistant layer; 6. Second wear-resistant structure; 601. Protective layer; 602. Second wear-resistant layer; 7. Valve stem; 8. O-ring. DETAILED DESCRIPTION

[0029] 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.

[0030] Reference Figure 1-4 The utility model provides an embodiment: a pressure-resistant valve core, including a base 1, a moving porcelain piece 2 is provided at the center of the lower end surface of the base 1. A static porcelain piece 3 is provided at the center of the lower end surface of the moving porcelain piece 2, a valve stem 7 is provided at the center of the lower end surface of the static porcelain piece 3, an outer wall of the valve stem 7 is provided with a second wear-resistant structure 6, an outer wall of the second wear-resistant structure 6 is sleeved with a valve shell 4, O-rings 8 are provided at the upper and lower centers of the outer wall of the valve stem 7 and the upper center of the outer wall of the valve shell 4, and the outer wall of the valve shell 4 is sleeved with a first wear-resistant structure 5.

[0031] During operation, the base 1 serves as a supporting structure, and the moving ceramic plate 2 cooperates with the static ceramic plate 3 to realize the opening and closing functions of the valve core. When pressure is applied, the pressure is transmitted to the valve stem 7 through the static ceramic plate 3. When the valve stem 7 moves up and down, the second wear-resistant structure 6 of its outer wall reduces the friction and wear between the valve stem 7 and the valve housing 4. The O-ring 8 prevents fluid from leaking at the connection between the valve stem 7 and the valve housing 4. The first wear-resistant structure 5 of the outer wall of the valve housing 4 reduces the wear of the valve housing 4 when it contacts the outside. The three O-rings 8 are made of rubber. The rubber O-rings 8 have good elasticity. After the valve core is installed, the O-rings 8 are squeezed and elastically deformed to fill the valve stem. The gap between the stem 7 and the valve housing 4 forms a seal, the static ceramic piece 3 and the valve housing 4 are adapted to each other, and the sizes and shapes of the static ceramic piece 3 and the valve housing 4 match each other. When the valve core is working, the movement of the dynamic ceramic piece 2 is transmitted through the static ceramic piece 3, and the static ceramic piece 3 can move smoothly in the valve housing 4 without jamming or deviation. A connecting port is provided at the center of the lower end surface of the valve stem 7, and the connecting port is used to connect with an external driving device or actuator. When the external device applies force or moves, it is transmitted to the stem 7 through the connecting port, thereby driving the movement of the valve core. Open grooves are provided at the upper center of the two side walls of the valve housing 4, and the open grooves can be used to install components that fix the valve housing 4, or as a part of the fluid channel.

[0032] The first wear-resistant structure 5 includes a protective layer 501 and a first wear-resistant layer 502. The protective layer 501 is sleeved on the outer wall of the valve housing 4, and the first wear-resistant layer 502 is sleeved on the outer wall of the protective layer 501. When the valve core is in operation, the valve housing 4 contacts with external objects and generates relative movement. The outermost first wear-resistant layer 502 is first subjected to friction and wear. The first wear-resistant layer 502 has high hardness and wear resistance and can effectively resist external wear. The inner protective layer 501 plays a supporting and reinforcing role to prevent the first wear-resistant layer 502 from deformation or rupture when subjected to greater pressure and impact, thereby reducing the frequency of valve core failure and maintenance and replacement due to wear of the valve housing 4 and reducing the cost of use.

[0033] The second wear-resistant structure 6 includes a protective layer 601 and a second wear-resistant layer 602. The protective layer 601 is sleeved on the outer wall of the valve stem 7, and the second wear-resistant layer 602 is sleeved on the outer wall of the protective layer 601. During the operation of the valve core, the valve stem 7 performs reciprocating motion. At this time, the second wear-resistant structure 6 sleeved on the outer wall of the valve stem 7 comes into play. The outermost second wear-resistant layer 602 is in direct contact with other components and bears friction. Since it has good wear-resistant properties, it can effectively resist the loss caused by friction. The internal protective layer 601 provides support and buffering for the second wear-resistant layer 602, reduces the impact and pressure on the second wear-resistant layer 602, and prevents it from excessive wear or rupture, significantly enhancing the wear resistance of the valve stem 7, greatly extending the service life of the valve stem 7, reducing the frequency of valve core failures caused by wear of the valve stem 7, and reducing maintenance and replacement costs.

[0034] Working principle: During operation, the base 1 serves as a supporting structure, and the moving ceramic plate 2 cooperates with the static ceramic plate 3 to realize the opening and closing functions of the valve core. When pressure is applied, the pressure is transmitted to the valve stem 7 through the static ceramic plate 3. When the valve stem 7 moves up and down, during the operation of the valve core, the valve stem 7 performs reciprocating motion. At this time, the second wear-resistant structure 6 sleeved on the outer wall of the valve stem 7 comes into play. The outermost second wear-resistant layer 602 is in direct contact with other components and bears friction. Due to its good wear-resistant properties, it can effectively resist the loss caused by friction. The internal protective layer 601 provides support and buffering for the second wear-resistant layer 602, reduces the impact and pressure on the second wear-resistant layer 602, prevents it from excessive wear or rupture, and significantly enhances the wear resistance of the valve stem 7. The performance greatly prolongs the service life of the valve stem 7, reduces the frequency of valve core failure caused by wear of the valve stem 7, and reduces the cost of maintenance and replacement. The O-ring 8 prevents fluid leakage at the connection between the valve stem 7 and the valve housing 4. When the valve core is in operation, the valve housing 4 contacts with external objects and generates relative movement. The outermost first wear-resistant layer 502 is first subjected to friction and wear. The first wear-resistant layer 502 has high hardness and wear resistance and can effectively resist external wear. The inner protective layer 501 plays a supporting and reinforcing role to prevent the first wear-resistant layer 502 from deformation or rupture when subjected to greater pressure and impact, thereby reducing the frequency of valve core failure and maintenance and replacement caused by wear of the valve housing 4 and reducing the cost of use.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressure-resistant valve core, comprising a base (1), characterized in that: A moving ceramic plate (2) is provided at the center of the lower end surface of the base (1). A static ceramic plate (3) is provided at the center of the lower end surface of the moving ceramic plate (2), a valve stem (7) is provided at the center of the lower end surface of the static ceramic plate (3), an outer wall of the valve stem (7) is provided with a second wear-resistant structure (6), an outer wall of the second wear-resistant structure (6) is sleeved with a valve housing (4), an O-ring (8) is provided at the upper and lower centers of the outer wall of the valve stem (7) and at the upper center of the outer wall of the valve housing (4), and an outer wall of the valve housing (4) is sleeved with a first wear-resistant structure (5).

2. A pressure-resistant valve core according to claim 1, characterized in that: The first wear-resistant structure (5) comprises a protective layer (501) and a first wear-resistant layer (502); the protective layer (501) is sleeved on the outer wall of the valve housing (4); and the first wear-resistant layer (502) is sleeved on the outer wall of the protective layer (501).

3. A pressure-resistant valve core according to claim 1, characterized in that: The second wear-resistant structure (6) comprises a protective layer (601) and a second wear-resistant layer (602), wherein the protective layer (601) is sleeved on the outer wall of the valve stem (7), and the second wear-resistant layer (602) is sleeved on the outer wall of the protective layer (601).

4. The pressure-resistant valve core according to claim 1, characterized in that: The three O-rings (8) are made of rubber.

5. The pressure-resistant valve core according to claim 1, characterized in that: The static ceramic plate (3) and the valve housing (4) are adapted to each other.

6. The pressure-resistant valve core according to claim 1, characterized in that: A connecting port is provided at the center of the lower end surface of the valve stem (7).

7. The pressure-resistant valve core according to claim 1, characterized in that: Open grooves are provided at the upper center of both side walls of the valve housing (4).

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