An embedded check valve

Abstract

The utility model discloses a kind of embedded one-way valves, it includes valve seat and steel ball type valve core, the outer wall of valve seat is fixedly covered with valve sleeve, steel ball type valve core is located in valve sleeve and is sealed with valve seat Cooperation, the position of valve sleeve inner wall and steel ball type valve core contact is equipped with guide block, spring is equipped in valve sleeve, one end of spring is connected on steel ball type valve core, the other end of spring is connected on valve sleeve inner surface.The utility model changes original push rod type valve core into steel ball type valve core, not only make embedded one-way valve more simple, improve production efficiency, and for embedded one-way valve, reduce the phenomenon of valve jam, performance is also greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of one-way valve technology, specifically to an embedded one-way valve. Background Technology

[0002] A one-way valve, also known as a check valve, allows liquid to flow in only one direction while blocking flow in the other. One-way valves can be classified into screw-in and embedded types based on their installation method. Embedded one-way valves are completely integrated into the integrated unit and secured solely by their own threads or other components, thus not occupying surface area and allowing for a more compact design.

[0003] like Figure 1 The diagram shows the basic structure of a conventional embedded check valve. It includes a valve seat 1, a valve core 2, a spring 3, a valve sleeve 4, and a sealing element. Check valves generally have a spring, and the spring preload usually exceeds the weight of the valve core, ensuring that the valve core can return to its original position regardless of the installation orientation. The aforementioned check valve opens fully by increasing the oil pressure, which compresses the spring and pushes the valve core 2 backward. However, the oil cannot flow backward, thus achieving the valve's function. Generally, a good check valve should have low forward flow resistance, rapid reverse closure, reliable sealing, and long service life. However, current technology cannot quickly complete reverse closure, easily causing jamming between the valve core 2 and the valve sleeve 4, resulting in backflow in the check valve. Furthermore, it increases the cost and difficulty of parts processing, and in mass production, not only does it increase processing time, but the processing accuracy is also difficult to achieve.

[0004] Currently available embedded check valves have significant defects in both valve core processing and valve core reset during reverse oil flow. These defects not only result in poor performance of the embedded check valves but also cause valve jamming. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of the existing technology by providing an embedded check valve that not only improves the performance of the check valve but also avoids valve jamming.

[0006] The technical solution adopted in this utility model is as follows: An embedded one-way valve includes a valve seat and a ball valve core. A valve sleeve is fixedly fitted onto the outer wall of the valve seat. The ball valve core is disposed inside the valve sleeve and is sealed to the valve seat. A guide block is provided at the position where the inner wall of the valve sleeve contacts the ball valve core. A spring is installed inside the valve sleeve, with one end of the spring connected to the ball valve core and the other end of the spring connected to the inner surface of the valve sleeve.

[0007] Preferably, an O-groove is provided at the bottom of the valve seat, and an O-ring is fitted in the O-groove.

[0008] Preferably, the guide blocks are circumferentially distributed on the inner wall of the valve sleeve.

[0009] Preferably, the shape of the guide block matches the shape of the contact position of the ball valve core.

[0010] Preferably, the spring is a tower-shaped spring.

[0011] The beneficial effects of this utility model are: (1) This utility model changes the original valve core push rod guide to the valve sleeve structure guide. The use of this structure is not limited and can make the stroke of the embedded check valve more clear and the performance better. (2) This utility model changes the original push rod valve core to a steel ball valve core, which not only makes the installation of the embedded check valve more convenient, but also improves production efficiency. Moreover, it reduces the phenomenon of valve jamming for the embedded check valve, and its performance is also greatly improved. Attached Figure Description

[0012] Figure 1 This is a cross-sectional view of the prior art; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a cross-sectional view of the guide block installed inside the valve sleeve in this utility model; In the diagram: 1. Valve seat; 2. Ball valve core; 3. Spring; 4. Valve sleeve; 5. Guide block; 5A. End of guide block. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings: like Figure 2-3 As shown, the present invention discloses an embedded check valve including a valve seat 1 and a ball valve core 2. A valve sleeve 4 is fixedly sleeved on the outer wall of the valve seat 1. The ball valve core 2 is disposed inside the valve sleeve 4 and seals with the valve seat 1. The ball valve core 2 is simple to manufacture, which not only makes the embedded check valve better, but also reduces the phenomenon of valve jamming for the embedded check valve, and greatly improves its performance.

[0014] In this invention, a guide block 5 is provided at the contact position between the inner wall of the valve sleeve 4 and the ball valve core 2. The guide block 5 is circumferentially distributed on the inner wall of the valve sleeve 4, and its shape matches the shape of the contact position of the ball valve core 2. When the check valve is open, the ball valve core 2 will sway left and right. At this time, the guide block 5 of the valve sleeve 4 plays a key role. When the oil pressure reaches the opening pressure of the check valve, it pushes the ball valve core 2 to move backward along the direction of the guide block 5. When the ball valve core 2 moves to the end 5A of the guide block, the check valve is fully opened, and the oil flows. At the same time, the ball valve core 2 will be stuck in the valve sleeve 4 and will not sway left and right, thus controlling the oil pressure to prevent it from becoming too high. When resetting, the ball valve core 2 can also form a closure with the sealing surface of the valve seat 1 under the action of the guide block 5.

[0015] In this invention, a spring 3 is installed inside the valve sleeve 4. One end of the spring 3 is connected to the steel ball valve core 2, and the other end of the spring 3 is connected to the inner surface of the valve sleeve 4. The spring 3 is a tower-shaped spring to ensure that it remains stable and does not easily shift when subjected to force.

[0016] The bottom of the valve seat 1 in this utility model is provided with an O-groove, and an O-ring is installed in the O-groove to seal the oil and prevent the oil from leaking out.

[0017] The usage process of this utility model is as follows: During assembly, the workers first install the spring 3 and the ball valve core 2 inside the valve sleeve 4, with one end of the spring 3 connected to the ball valve core 2 and the other end of the spring 3 connected to the inner surface of the valve sleeve 4, while the ball valve core 2 rests against the guide block 5; then the assembled valve sleeve 4 is fixedly fitted onto the outer wall of the valve seat 1, the O-ring is fitted into the O-groove on the valve seat 1, and finally the special tooling is used to press it in place.

[0018] When the inlet pressure is higher than the outlet pressure, the oil enters through the check valve. At this time, the ball valve core 2 is pushed away from the valve seat 1 until it abuts against the end 5A of the guide block. At the same time, the compression of the spring 3 increases, and the oil flows through the channel of the valve body, realizing the forward flow of the oil.

[0019] When the reverse pressure is greater than the inlet pressure, the compression of spring 3 decreases, the ball valve core 2 is pushed towards valve seat 1 and seals with it, blocking the inlet passage, closing the check valve, and thus preventing oil backflow.

[0020] Other undescribed parts of this utility model are the same as those in the prior art.

Claims

1. An embedded check valve, characterized in that: It includes a valve seat (1) and a ball valve core (2). A valve sleeve (4) is fixedly sleeved on the outer wall of the valve seat (1). The ball valve core (2) is located inside the valve sleeve (4) and is sealed to the valve seat (1). A guide block (5) is provided at the position where the inner wall of the valve sleeve (4) contacts the ball valve core (2). A spring (3) is installed inside the valve sleeve (4). One end of the spring (3) is connected to the ball valve core (2), and the other end of the spring (3) is connected to the inner surface of the valve sleeve (4).

2. The embedded check valve according to claim 1, characterized in that: The bottom of the valve seat (1) is provided with an O-groove, and an O-ring is assembled in the O-groove.

3. The embedded check valve according to claim 1, characterized in that: The guide block (5) is circumferentially distributed on the inner wall of the valve sleeve (4).

4. The embedded check valve according to claim 3, characterized in that: The shape of the guide block (5) matches the shape of the contact position of the ball valve core (2).

5. The embedded check valve according to claim 1, characterized in that: The spring (3) is a tower-shaped spring.

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