Small check ball seat structure of one-way valve
By using spheres and ball seats made of zirconium oxide or aluminum oxide, combined with a multi-stage cavity and annular serration design, the problem of loose sealing of the one-way valve check device in a highly corrosive fluid environment is solved, achieving high sealing and corrosion resistance.
Patent Information
- Application Number
- CN202423136172.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-12-19
AI Technical Summary
When the one-way valve check device of the existing pneumatic diaphragm pump encounters highly corrosive fluids, the joint between the ball and the ball socket is easily corroded, resulting in a loose seal, ineffective anti-return function, and easy clamping of solid impurities.
The ball and ball seat are made of zirconium oxide or aluminum oxide. The ball seat is equipped with a multi-stage cavity structure and annular serrations to enhance the sealing performance. The fit between the ball and the ball seat is reinforced by multiple rows of annular serrations.
The corrosion resistance and sealing performance of the one-way valve are improved, the maintenance frequency is reduced, and effective sealing is ensured in highly corrosive fluid environments.
Smart Images
Figure CN223447747U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to one -way valve technical field, concretely relates to a one -way valve check ball seat structure. BACKGROUND
[0002] Compared with the traditional fluid conveying equipment, the pneumatic diaphragm pump has the characteristics of safety and reliability, strong adaptability and economy. With the gradual popularization in the market, the pneumatic diaphragm pump has widened the application industry, especially for conveying strong corrosive, flammable and explosive, toxic, volatile and particulate fluid, which further embodies its use value.
[0003] At present, a check valve check device is installed in the pneumatic diaphragm pump, which realizes the function of one-way check by the cooperation of the ball and the ball socket. The material of the ball and the ball socket is stainless steel, and the combination part of the ball and the ball socket is spherical. In actual use, there is a small gap between the contact surface of the ball and the ball socket, which is easy to sandwich the solid impurities such as particles in the gap, causing the check valve to close tightly, and not playing the role of check. Moreover, when encountering strong corrosive fluid, the surface of the ball and the ball socket is also easy to be corroded and become rough, which greatly reduces the check effect. SUMMARY
[0004] The utility model discloses a kind of one-way valve check ball seat structure with strong corrosion resistance and high sealing property, to solve the problems of the prior art.
[0005] The technical scheme adopted by the utility model is as follows:
[0006] A one-way valve check ball seat structure, which comprises a ball and a ball seat, the ball and the ball seat are made of zirconia or alumina material, the ball seat is provided with a sealing cavity for sealing cooperation with the ball to block the fluid channel, the sealing cavity is a multi-stage cavity structure, from top to bottom, it is sequentially connected and integrally formed first circular table cavity, second circular table cavity, third circular table cavity and straight cylinder cavity, the diameter of the straight cylinder cavity is smaller than the lower bottom diameter of the second circular table cavity, the upper bottom diameter of the second circular table cavity is smaller than the upper bottom diameter of the first circular table cavity, the upper bottom diameter of the first circular table cavity is larger than the diameter of the ball, the lower part of the ball is sealingly attached to the inner wall of the second circular table cavity, and a plurality of annular sawteeth are arranged on the inner wall of the first circular table cavity, and the tooth tips of the annular sawteeth abut against the ball.
[0007] Preferably, the diameter of the ball is 6-8mm.
[0008] Preferably, the ball seat is cylindrical.
[0009] Preferably, the height of the ball seat is 3-5mm.
[0010] Preferably, three rows of annular sawteeth are arranged on the inner wall of the first circular table cavity.
[0011] Preferably, the teeth on the annular saw are in the shape of an isosceles triangle in cross-section.
[0012] The ball seat structure has the advantages of the following:
[0013] (1) The ball and the ball seat are made of zirconium oxide or aluminum oxide material, which has better corrosion resistance and self-lubricating property, and the surface of the ball and the ball seat is not easy to be corroded and become rough when encountering strong corrosive fluid, so that the maintenance frequency is greatly reduced, and the ball seat structure is very convenient.
[0014] (2) The sealing cavity is provided in a multi-stage cavity structure, so that the ball can be tightly fitted with the sealing cavity; meanwhile, through the multiple rows of annular saw teeth, the fitting force between the ball and the ball seat is reinforced, so that the sealing effect is improved. BRIEF DESCRIPTION OF DRAWINGS
[0015] Fig. 1 The ball seat structure has the advantages of the following:
[0016] Fig. 2 The ball seat structure has the advantages of the following:
[0017] In the drawing, 1 is a ball, 2 is a ball seat, 3 is a sealing cavity, 4 is a first circular table cavity, 5 is a second circular table cavity, 6 is a third circular table cavity, 7 is a straight cylindrical cavity, 8 is an annular saw, and 9 is a tooth. DETAILED DESCRIPTION
[0018] The ball seat structure has the advantages of the following:
[0019] As shown in the drawing, the ball seat structure has the advantages of the following: Figs. 1-2 The ball seat structure has the advantages of the following:
[0020] The ball seat structure has the advantages of the following: The sealing cavity 3 is a multi-stage cavity structure, and from top to bottom, the first circular table cavity 4, the second circular table cavity 5, the third circular table cavity 6 and the straight cylindrical cavity 7 are connected in sequence and integrally formed; wherein the diameter of the straight cylindrical cavity 7 is smaller than the lower bottom diameter of the second circular table cavity 5, the upper bottom diameter of the second circular table cavity 5 is smaller than the upper bottom diameter of the first circular table cavity 4, and the upper bottom diameter of the first circular table cavity 4 is greater than the diameter of the ball 1, so that the ball 1 is more easily fallen into the sealing cavity 3; the lower part of the ball 1 fallen into the sealing cavity 3 is tightly fitted with the inner wall of the second circular table cavity 5, three rows of annular saw teeth 8 are arranged on the inner wall of the first circular table cavity 4, the tooth tips of the annular saw teeth 8 abut against the ball 1, the fitting force between the ball 1 and the ball seat 2 is reinforced, and the sealing effect is improved.
[0021] The diameter of the ball 1 is 6-8mm, preferably 7mm; the height of the ball seat 2 is 3-5mm, preferably 4mm.
[0022] The cross section of the tooth 9 on the annular sawtooth 8 is isosceles triangle, and the tooth tip of the tooth 9 is in abutment with the ball 1, thereby ensuring uniform stress.
[0023] The use process of the utility model is as follows:
[0024] In use, the ball 1 is quickly placed on the ball seat 2, so that the ball 1 falls into the sealed cavity 3, the lower part of the ball 1 in the sealed cavity 3 is sealed and fitted with the inner wall of the second circular cone cavity 5, and the tooth tip of the annular sawtooth 8 on the inner wall of the first circular cone cavity 4 is in abutment with the ball 1, thereby reinforcing the fitting force between the ball 1 and the ball seat 2, and improving the sealing effect therebetween.
[0025] The other unexplained parts of the utility model are the same as the prior art.
Claims
1. A one-way valve check ball seat structure, characterized by It comprises a sphere (1) and a ball seat (2), wherein the sphere (1) and the ball seat (2) are made of zirconium oxide or aluminum oxide. The ball seat (2) is provided with a sealing cavity (3) for sealing with the sphere (1) to block a fluid passage. The sealing cavity (3) is a multi-stage cavity structure, which comprises a first truncated cone cavity (4), a second truncated cone cavity (5), a third truncated cone cavity (6) and a straight cylindrical cavity (7) which are sequentially connected and integrally formed from top to bottom. The diameter of the straight cylindrical cavity (7) is smaller than The diameter of the lower bottom surface of the second truncated cone cavity (5) is smaller than the diameter of the upper bottom surface of the first truncated cone cavity (4), and the diameter of the upper bottom surface of the first truncated cone cavity (4) is larger than the diameter of the sphere (1). The lower part of the sphere (1) is sealed and fitted with the inner wall of the second truncated cone cavity (5). The inner wall of the first truncated cone cavity (4) is provided with multiple rows of annular serrations (8), and the tooth tips of the annular serrations (8) are against the sphere (1).
2. The one-way valve check ball seat structure according to claim 1 is characterized in that The diameter of the sphere (1) is 6-8 mm.
3. The one-way valve check ball seat structure according to claim 1 is characterized in that The ball seat (2) is cylindrical.
4. The one-way valve check ball seat structure according to claim 3 is characterized in that The height of the ball seat (2) is 3-5 mm.
5. The one-way valve check ball seat structure according to claim 1 is characterized in that Three rows of annular serrations (8) are provided on the inner wall of the first truncated cone cavity (4).
6. The one-way valve check ball seat structure according to claim 1 is characterized in that The cross section of the teeth (9) on the annular saw teeth (8) is an isosceles triangle.