An integrated check valve

Abstract

The utility model provides a kind of integrated check valve, including valve body, valve core, baffle, snap spring, spring and O-shaped sealing ring;Integrated check valve of the utility model is increased and set snap spring in baffle rear end, and the snap spring that the increased setting is from rear end and stops baffle, and then effectively prevents baffle from falling off in the baffle accommodating cavity on valve body, solves the technical problem that one-way valve is caused by baffle drop-off and leads to one-way valve failure.

Description

Technical Field

[0001] This utility model relates to the field of fluid control technology, and in particular to an integrated one-way valve. Background Technology

[0002] An integrated check valve is a type of check valve where all key components, such as the valve body, valve core, and spring, are integrated into a single, inseparable housing. It leaves the factory as a single unit, eliminating the need for user disassembly and maintenance. Compared to separate check valves, integrated check valves effectively reduce production costs and minimize potential leakage points. Integrated check valves typically use threads (internal or external) to connect to equipment and pipelines, or can be combined with various fittings for diverse pipeline connections, making installation quick and simple.

[0003] When the outlet end of the integrated check valve is connected to the pipeline via an external thread, the internal valve core, under the action of pulsed fluid and the mechanical vibration of the equipment, will cause the stop block that is fixed to the valve body and guides the valve core to loosen. As a result, the valve core cannot be properly fixed in the valve body, which in turn leads to the aging of the entire check valve. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an integrated one-way valve, which includes a valve body, a valve core, a stop block, a retaining ring, a spring, and an O-ring seal. The valve core is cylindrical, and a first outer circumferential surface that mates with the inner ring of the spring is provided on the outer circumferential surface of the valve core. An O-ring seal receiving groove is provided to accommodate the O-ring seal, and the O-ring seal is disposed in the O-ring seal receiving groove. A boss is also provided on the outer circumferential surface of the valve core, and one end of the spring is in contact with the surface of the boss of the valve core. A flow guide cone surface is provided at the end of the valve core. The valve body is provided with a fluid inlet, a flow orifice, a valve core receiving cavity, a stop block receiving cavity, a snap ring receiving groove, and a fluid outlet in sequence from the fluid inlet end to the fluid outlet end. A first external thread is provided on the outer circumferential surface of the valve body on the fluid outlet side. The flow orifice engages with the O-ring on the valve core to open or close the integrated one-way valve, and the valve core receiving cavity is used to accommodate the valve core. The stop block has a second external thread on its outer circumferential surface and a guide hole that mates with the first outer circumferential surface of the valve core inside. The stop block cavity has a second internal thread that mates with the second external thread on its inner circumferential surface. The stop block is located inside the stop block cavity, and one end face of the stop block is in contact with the other end of the spring. The retaining ring is a conventional retaining ring with an ear hole, and the retaining ring is disposed inside the retaining ring receiving groove; The fluid inlet, flow outlet, valve core receiving cavity, stop block receiving cavity, snap ring receiving groove, and fluid outlet are sequentially connected.

[0005] Furthermore, to facilitate smoother fluid flow through the baffle, the baffle is also provided with through holes, through grooves, or cross-sections for fluid to pass through.

[0006] Furthermore, to facilitate the installation of the baffle, the baffle is provided with a pair of parallel cross-sections for the fluid to pass through.

[0007] Furthermore, in order to facilitate the connection between the integrated check valve and the fluid inlet pipe, a third external thread is provided on the outer circumferential surface of the fluid inlet end of the valve body.

[0008] Furthermore, in order to facilitate the connection between the integrated check valve and the fluid inlet pipe, a third internal thread is provided on the inner circumferential surface of the fluid inlet hole on the valve body.

[0009] Furthermore, to prevent reverse connection of the integrated check valve, a fluid flow direction indicator arrow is provided on the outer circumferential surface of the valve body.

[0010] Furthermore, to facilitate clamping the integrated one-way valve during installation, the outer circumferential surface of the valve body is also provided with an outer hexagonal clamping surface.

[0011] Furthermore, when the diameter of the receiving groove on the integrated one-way valve is small, the retaining ring is a retaining ring without an ear hole.

[0012] This utility model's integrated check valve, when the stop block is installed, compresses the spring, which drives the valve core to move forward. The O-ring on the valve core cooperates with the flow orifice of the valve body to achieve one-way closure of the fluid passage. When fluid enters the integrated check valve from the fluid inlet end, under the action of fluid dynamics, it compresses the check valve to move backward, thereby causing the O-ring on the valve core to disengage from the flow orifice of the valve body, opening the check valve and achieving the function of one-way flow.

[0013] Compared to ordinary integrated check valves, this utility model's integrated check valve adds a retaining spring at the rear end of the stop block. When the valve core moves under the combined action of pulsed airflow and mechanical vibration of the equipment, the stop block may fall off the stop block receiving cavity on the valve body during its circular motion under the action of spring force. At this time, the added retaining spring abuts against the stop block from the rear end, thereby effectively preventing the stop block from falling off the stop block receiving cavity on the valve body, thus solving the technical problem of check valve failure caused by the stop block falling off. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the integrated one-way valve structure of this utility model; Figure 2 for Figure 1 Sectional view along line AA; Figure 3 for Figure 1 Top view; Figure 4 for Figure 1 Axial side structure schematic diagram; Figure 5 This is a schematic diagram of the valve body structure; Figure 6 for Figure 5 Sectional view along line BB; Figure 7 for Figure 5 Top view; Figure 8 for Figure 5 Axial side structure schematic diagram; Figure 9 This is a schematic diagram of the valve core structure; Figure 10 for Figure 9 Axial side structure schematic diagram; Figure 11 This is a schematic diagram of the stop block structure; Figure 12 for Figure 11 Sectional view along the CC line; Figure 13 for Figure 11 Axial side structure schematic diagram; Figure 14 This is a schematic diagram of a snap ring structure; Figure 15 This is a schematic diagram of a spring structure; Figure 16 This is a schematic diagram of the O-ring seal structure; Figure 17 This is a schematic diagram of another structure of the snap ring; Figure 18 This is a schematic diagram of another structure of the valve body.

[0015] In the diagram: 1. Valve body, 2. Valve core, 3. Stop block, 4. Snap ring, 5. Spring, 6. O-ring seal, 101. Fluid inlet, 102. Flow port, 103. Valve core receiving cavity, 104. Stop block receiving cavity, 105. Snap ring receiving groove, 106. Fluid outlet, 107. First external thread, 108. Second internal thread, 109. Third external thread, 110. Fluid flow direction indicator arrow, 111. External hexagonal clamping surface, 112. Third internal thread, 201. Boss, 202. First outer circumferential surface, 203. O-ring seal receiving groove, 204. Guide cone surface, 301. Guide hole, 302. Second external thread, 303. Cross-section, 401. Snap ring auxiliary mounting hole. Detailed Implementation

[0016] The following is in conjunction with the appendix Figure 1-18Specific embodiments provide further detailed description of the present invention. However, this should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0017] Implementation 1 The integrated one-way valve described in this embodiment includes a valve body 1, a valve core 2, a stop block 3, a retaining ring 4, a spring 5, and an O-ring seal 6. The valve core 2 is cylindrical, and a first outer circumferential surface 202 that mates with the inner ring of the spring 5 is provided on the outer circumferential surface of the valve core 2. A boss 201 is also provided on the outer circumferential surface of the valve core 2, and one end of the spring 5 is in contact with the surface of the boss 201 of the valve core 2. A flow guide cone surface 204 is provided at the end of the valve core 2, and an O-ring seal receiving groove 203 is also provided on the outer circumferential surface of the valve core 2. The O-ring seal 6 is disposed in the O-ring seal receiving groove 203. The valve body 1 is provided with a fluid inlet 101, a flow orifice 102, a valve core receiving cavity 103, a stop block receiving cavity 104, a snap ring receiving groove 105, and a fluid outlet 106 in sequence from the fluid inlet end to the fluid outlet end. A first external thread 107 is provided on the outer circumferential surface of the valve body 1 on the fluid outlet side. A fluid flow direction indicator arrow 110 and an external hexagonal clamping surface 111 are also provided on the outer circumferential surface of the valve body 1. A third external thread 109 is provided on the outer circumferential surface of the fluid inlet end of the valve body. The flow orifice 102 is fitted and sealed with the O-ring on the valve core to open or close the integrated one-way valve. The valve core receiving cavity 103 is used to receive the valve core 2. The stop block 3 has a second external thread 302 on its outer circumferential surface and a guide hole 301 inside that mates with the first outer circumferential surface of the valve core 2. The stop block receiving cavity 104 also has a second internal thread 108 on its inner circumferential surface that mates with the second external thread of the stop block 3. The stop block 3 is located inside the stop block receiving cavity 103, and one end face of the stop block 3 is in contact with the other end of the spring. The cut surface 303 on the stop block 3 for fluid to pass through is a pair of parallel cut surfaces.

[0018] The retaining ring 4 is a conventional retaining ring with an ear hole. The retaining ring 4 is provided with a pair of retaining ring auxiliary mounting holes 401. The retaining ring 4 is located inside the retaining ring receiving groove 105.

[0019] Example 2 The integrated check valve described in this embodiment is basically similar in structure to that in Embodiment 1. The difference is that the diameter of the retaining ring receiving groove 105 inside the valve body of the integrated check valve in this embodiment is smaller, and it cannot accommodate a retaining ring with a pair of retaining ring auxiliary mounting holes 401 and an ear hole. The retaining ring used in the integrated check valve in this embodiment is as follows: Figure 17 As shown, the retaining ring is a retaining ring without an ear hole, and the other structures are the same as those in Example 1.

[0020] Example 3 The integrated check valve described in this embodiment is basically similar in structure to that in Embodiment 1. The difference is that the fluid inlet 101 on the valve body of the integrated check valve in this embodiment needs to accommodate the flow into the pipeline. Therefore, compared with Embodiment 1, the third external thread 109 on the outer circumferential surface of the fluid inlet end of the valve body in this embodiment is instead a third internal thread 112 on the inner circumferential surface of the fluid inlet on the valve body. Figure 18 As shown, the other structures are the same as those in Example 1.

Claims

1. An integrated check valve, characterized in that, The integrated one-way valve includes a valve body, a valve core, a stop block, a retaining ring, a spring, and an O-ring seal. The valve core is cylindrical, and a first outer circumferential surface that mates with the inner ring of the spring is provided on the outer circumferential surface of the valve core. An O-ring seal receiving groove is provided to accommodate the O-ring seal, and the O-ring seal is disposed in the O-ring seal receiving groove. A boss is also provided on the outer circumferential surface of the valve core. One end of the spring is in contact with the surface of the boss of the valve core, and a flow guide cone surface is provided at the end of the valve core. The valve body is provided with a fluid inlet, a flow orifice, a valve core receiving cavity, a stop block receiving cavity, a snap ring receiving groove, and a fluid outlet in sequence from the fluid inlet end to the fluid outlet end. A first external thread is provided on the outer circumferential surface of the valve body on the fluid outlet side. The flow orifice engages with the O-ring on the valve core to open or close the integrated one-way valve, and the valve core receiving cavity is used to accommodate the valve core. The stop block has a second external thread on its outer circumferential surface and a guide hole that mates with the first outer circumferential surface of the valve core inside. The stop block cavity has a second internal thread that mates with the second external thread on its inner circumferential surface. The stop block is located inside the stop block cavity, and one end face of the stop block is in contact with the other end of the spring. The retaining ring is a retaining ring with an ear hole, and the retaining ring is disposed inside the retaining ring receiving groove; The fluid inlet, flow outlet, valve core receiving cavity, stop block receiving cavity, snap ring receiving groove, and fluid outlet are sequentially connected.

2. The integrated check valve as described in claim 1, characterized in that, The block is also provided with through holes, through grooves or cut surfaces for fluid to pass through.

3. The integrated check valve as described in claim 2, characterized in that, The baffle is provided with a pair of parallel cross-sections for fluid to pass through.

4. The integrated check valve as described in claim 1, characterized in that, The valve body has a third external thread on its outer circumferential surface at the fluid inlet end.

5. The integrated check valve as described in claim 1, characterized in that, A third internal thread is provided on the inner circumferential surface of the fluid inlet hole on the valve body.

6. The integrated check valve as described in claim 1, characterized in that, The outer circumferential surface of the valve body is also provided with a fluid flow direction indicator arrow.

7. The integrated check valve as described in claim 6, characterized in that, The outer circumferential surface of the valve body is also provided with an outer hexagonal clamping surface.

8. The integrated check valve as described in claim 1, characterized in that, The outer circumferential surface of the valve body is also provided with an outer hexagonal clamping surface.

9. The integrated check valve as described in claim 1, characterized in that, The retaining ring is a loopless retaining ring.

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