Check valve

Abstract

The check valve comprises a valve seat and a steel ball arranged in the valve seat, the valve seat is provided with an inlet and an outlet which are communicated with each other, the inlet and the outlet are communicated through a conical surface, a large opening of the conical surface is communicated with the inlet, a small opening of the conical surface is communicated with the outlet, and the steel ball is arranged in the conical surface. The inlet is provided with a baffle corresponding to the steel ball, and the baffle is provided with a drainage hole. The check valve has the advantages that the steel ball is used for replacing a conical valve element, the check valve is small in size, low in manufacturing cost, low in roughness requirement, free of grinding, capable of saving machining cost and good in sealing effect, the baffle is used for preventing the steel ball from falling off, flow can be increased due to the design of the drainage holes in the baffle, media can rapidly push the steel ball when passing through the drainage holes, response is quick, and the check valve is convenient to operate. And when oil is discharged, no flow choking phenomenon exists.

Description

Technical Field

[0001] The utility model relates to the technical field related to valves, and in particular to a check valve. Background Art

[0002] A check valve, also known as a one-way valve, is a valve in which the valve core relies on its own weight and medium pressure to generate movement to block the backflow of the medium, even if the liquid fluid or gas fluid moves in one direction. The check valve core currently used is conical, and the outer surface of the valve core needs to be ground, and the roughness must reach below 0.8. The valve core and the cone mouth can barely achieve a sealing effect when sealing. This type of check valve has high processing costs, poor sealing effect, is prone to leakage, and has poor quality stability. Utility Model Content

[0003] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide a check valve.

[0004] The technical solution adopted by the present invention to achieve the above-mentioned purpose is:

[0005] A check valve includes a valve seat and a steel ball arranged in the valve seat, the valve seat is provided with an inlet and an outlet connected to each other, the inlet and the outlet are connected through a conical surface, the large opening of the conical surface is connected to the inlet, and the small opening of the conical surface is connected to the outlet, the steel ball is arranged in the conical surface, the inlet is installed with a baffle corresponding to the steel ball, and the baffle is provided with a drainage hole.

[0006] The outer wall of the valve seat at one end of the inlet is processed with threads.

[0007] The baffle and the valve seat are connected by riveting.

[0008] The baffle is evenly distributed with at least two large drainage holes along the circumference.

[0009] The baffle is evenly distributed with four large drainage holes along the circumference.

[0010] A small drainage hole is provided at the center of the baffle.

[0011] The characteristics of the utility model are: a steel ball is used to replace the conical valve core, which is small in size, low in cost, has low roughness requirements, does not require grinding, saves processing costs, and has a good sealing effect. A baffle is used to prevent the steel ball from falling off. The design of the drainage hole on the baffle can increase the flow rate, so that the medium can quickly push the steel ball when passing through the drainage hole, and the response is quick. In addition, there is no flow obstruction during the oil unloading action. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the present utility model.

[0013] Figure 2 yes Figure 1side view.

[0014] Figure 3 It is a schematic diagram of the baffle structure of the present utility model.

[0015] Figure 4 yes Figure 3 side view.

[0016] Among them: 1. valve seat 11, inlet 12, outlet 13, cone surface 14, thread 2, steel ball 3, baffle 31, large drainage hole 32, small drainage hole. DETAILED DESCRIPTION

[0017] like Figure 1-4 As shown, the utility model is a check valve, which is suitable for working conditions such as hydraulic systems, hydraulic stations, water stations, lubrication stations, and gas stations that require unidirectional movement of liquid fluids and gas fluids. It specifically includes a valve seat 1 and a steel ball 2 arranged in the valve seat 1. The valve seat 1 is provided with an inlet 11 and an outlet 12 that are connected. The outer wall of the valve seat 1 at one end of the inlet 11 is processed with a thread 14. The inlet 11 and the outlet 12 are connected through a conical surface 13. The large mouth of the conical surface 13 is connected to the inlet 11, and the small mouth of the conical surface 13 is connected to the outlet 12. The diameter of the small mouth of the conical surface 13 is smaller than the diameter of the steel ball 2, and the diameter of the large mouth of the conical surface 13 is larger than the diameter of the steel ball 2. The steel ball 2 is arranged in the conical surface 13, and the steel ball 2 serves as the opening of the valve core. The steel ball 2 is a standard part with small size and low cost. It does not require grinding and saves processing costs. When the surface roughness is 3.2, it can be completely sealed with good sealing effect and high pressure resistance. The inlet 11 is installed with a baffle 3 corresponding to the steel ball 2, which prevents the steel ball 2 from falling off. The baffle 3 is connected to the valve seat 1 by riveting. A drainage hole is provided on the baffle 3, and at least two large drainage holes 31 are evenly distributed along the circumferential surface of the baffle 3. Preferably, four large drainage holes 31 are evenly distributed along the circumferential surface of the baffle 3, and a small drainage hole 32 is also provided at the center of the baffle 3 to increase the flow rate so that the medium can quickly push the steel ball 2 when passing through the drainage hole, with quick response and no flow blockage during oil unloading.

[0018] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the protection scope of the present invention.

Claims

1. A check valve, characterized in that: It includes a valve seat and a steel ball arranged in the valve seat, the valve seat is provided with an interconnected inlet and outlet, the inlet and outlet are connected through a conical surface, the large opening of the conical surface is connected to the inlet, and the small opening of the conical surface is connected to the outlet, the steel ball is arranged in the conical surface, the inlet is installed with a baffle corresponding to the steel ball, and the baffle is provided with a drainage hole.

2. A check valve according to claim 1, characterized in that: The outer wall of the valve seat at one end of the inlet is processed with threads.

3. A check valve according to claim 1, characterized in that: The baffle and the valve seat are connected by riveting.

4. A check valve according to claim 1, characterized in that: The baffle is evenly distributed with at least two large drainage holes along the circumference.

5. A check valve according to claim 4, characterized in that: The baffle is evenly distributed with four large drainage holes along the circumference.

6. A check valve according to claim 4 or 5, characterized in that: A small drainage hole is provided at the center of the baffle.

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