Double-alternating one-way valve

Abstract

The utility model relates to the field of hydraulic control valves, in particular to a double-alternate one-way valve which comprises a valve body, a second connector, a fourth connector, a first valve element and a second valve element. A first annular wall is arranged on the periphery of the first valve element, a second annular wall is arranged on the inner periphery of the second connector, a plurality of first oil ports are formed in the peripheral wall of the second annular wall, a third annular wall is arranged on the periphery of the second valve element, a fourth annular wall is arranged on the inner periphery of the fourth connector, and a plurality of second oil ports are formed in the peripheral wall of the fourth annular wall. According to the double-alternate one-way valve, when the first valve element is combined with the second connector, hydraulic oil is squeezed out from the first oil port, so that the combination process of the first valve element and the second connector is buffered, and the first valve element and the second connector are protected; when the second valve element is combined with the fourth connector, the hydraulic oil is squeezed out from the second oil port, so that the combination process between the second valve element and the fourth connector is buffered, and the second valve element and the fourth connector are protected.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic control valves, and in particular to a double alternating one-way valve. Background Technology

[0002] In existing technologies, the double alternating check valve is one of the most widely used hydraulic components in hydraulic support control systems, playing a crucial role in the hydraulic system of the hydraulic support. It is primarily responsible for controlling the extension and retraction of the jacks in the hydraulic system, thereby enabling differential operation of the jacks.

[0003] A typical double-alternating check valve includes two valve cores. One valve core is equipped with a spring, while the other valve core acts as a sliding piston. During the operation of the double-alternating check valve, the impact from the high-pressure oil flow can cause structural damage to both valve cores, thereby reducing their sealing effect. Utility Model Content

[0004] The main purpose of this utility model is to provide a double alternating check valve, which aims to solve the problem that the valve core of the double alternating check valve is easily damaged by impact.

[0005] To achieve the above objectives, this utility model provides a dual alternating check valve, comprising:

[0006] The valve body extends through the first cavity in width. The two ends of the first cavity are a first port and a second port, respectively. One end of the valve body is provided with a third port that leads to the middle of the first cavity. The other end of the valve body is provided with a second cavity that leads to the middle of the first cavity. The outer end of the second cavity is a fourth port. One end of the valve body is provided with a fifth port that leads to the middle of the second cavity.

[0007] The second connector is connected to the second port;

[0008] The fourth connector is connected to the fourth port;

[0009] A first valve core is slidably disposed in the first cavity and clamps a first spring with the second connector. A first annular wall matching the first cavity is provided on the outer periphery of one end of the first valve core near the second connector. A second annular wall with an outer diameter matching the inner diameter of the first annular wall is provided on the inner periphery of the second connector near the end of the first valve core. A plurality of first oil ports are provided on the peripheral wall of the second annular wall.

[0010] The second valve core is slidably disposed in the second cavity. The outer periphery of the second valve core near the fourth connector is provided with a third annular wall that matches the second cavity. The inner periphery of the fourth connector near the second valve core is provided with a fourth annular wall whose outer diameter matches the inner diameter of the third annular wall. Multiple second oil ports are provided on the peripheral wall of the fourth annular wall.

[0011] Furthermore, a hollow spring bracket is provided in the middle of the fourth connector, and a second spring is provided on the spring bracket. The end of the second spring away from the spring bracket supports the second valve core. When the second valve core is engaged with the fourth connector, the second spring is in a compressed state.

[0012] Furthermore, the two ends of the second spring are respectively connected to the second valve core and the spring bracket. When the second valve core is located at the bottom of the second cavity, the second spring is in a stretched state.

[0013] Furthermore, the connection between the spring bracket and the fourth connector is a threaded connection.

[0014] Furthermore, the inner end of the second opening is provided with two stepped structures that gradually expand from the inside to the outside. The stepped structure inside the second opening clamps the first sealing ring between itself and the second connector, and the stepped structure outside the second opening abuts against the second connector.

[0015] Furthermore, the inner end of the fourth opening is provided with two stepped structures that gradually expand from the inside to the outside. The stepped structure inside the fourth opening and the fourth connector hold a second sealing ring, and the stepped structure outside the fourth opening abuts against the fourth connector.

[0016] Furthermore, the first sealing ring extends between the second annular wall and the first cavity.

[0017] Furthermore, the second sealing ring extends between the fourth annular wall and the second cavity.

[0018] Furthermore, the first port, the third port, and the fifth port are respectively connected to a first connector, a third connector, and a fifth connector.

[0019] Furthermore, the second connector and the second opening are connected by a thread, and the fourth connector and the fourth opening are connected by a thread.

[0020] The present invention provides a dual alternating check valve, wherein a first valve core has a first annular wall on its outer periphery, a second connector has a second annular wall on its inner periphery, and the second annular wall has multiple first oil ports on its periphery; a third annular wall is provided on the outer periphery of the second valve core, and a fourth annular wall is provided on the inner periphery of the fourth connector, and the fourth annular wall has multiple second oil ports on its periphery. When the first valve core engages with the second connector, hydraulic oil is squeezed out from the first oil ports, thereby buffering the engagement process between the first valve core and the second connector, thus protecting the first valve core and the second connector; when the second valve core engages with the fourth connector, hydraulic oil is squeezed out from the second oil ports, thereby buffering the engagement process between the second valve core and the fourth connector, thus protecting the second valve core and the fourth connector. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the valve body in a dual alternating check valve according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of a dual alternating check valve according to an embodiment of the present invention (first state);

[0023] Figure 3 yes Figure 2 A schematic diagram of section A in the middle;

[0024] Figure 4 yes Figure 2 Schematic diagram of section B;

[0025] Figure 5 This is a schematic diagram of a dual alternating check valve according to an embodiment of the present invention (second state);

[0026] Figure 6 yes Figure 5 A schematic diagram of section C;

[0027] Figure 7 yes Figure 5 A schematic diagram of section D in the middle.

[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0030] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” “the,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, units, modules, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connection or wireless coupling. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

[0031] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0032] Reference Figures 1 to 7 In one embodiment of this utility model, a dual alternating one-way valve includes:

[0033] The valve body 100 extends through the first cavity 110 in width. The two ends of the first cavity 110 are a first port 101 and a second port 102, respectively. One end of the length of the valve body 100 is provided with a third port 103 that leads to the middle of the first cavity 110. The other end of the length of the valve body 100 is provided with a second cavity 120 that leads to the middle of the first cavity 110. The outer end of the second cavity 120 is a fourth port 104. One end of the width of the valve body 100 is provided with a fifth port 105 that leads to the middle of the second cavity 120.

[0034] The second connector 200 is connected to the second port 102;

[0035] The fourth connector 300 is connected to the fourth port 104;

[0036] A first valve core 400 is slidably disposed in the first cavity 110 and clamps a first spring 410 with the second connector 200. A first annular wall 420 matching the first cavity 110 is provided on the outer periphery of one end of the first valve core 400 near the second connector 200. A second annular wall 210 with an outer diameter matching the inner diameter of the first annular wall 420 is provided on the inner periphery of the second connector 200 near the end of the first valve core 400. A plurality of first oil ports 211 are provided on the peripheral wall of the second annular wall 210.

[0037] The second valve core 500 is slidably disposed in the second cavity 120. The outer periphery of the second valve core 500 near the fourth connector 300 is provided with a third annular wall 510 that matches the second cavity 120. The inner periphery of the fourth connector 300 near the end of the second valve core 500 is provided with a fourth annular wall 310 whose outer diameter matches the inner diameter of the third annular wall 510. A plurality of second oil ports 311 are provided on the peripheral wall of the fourth annular wall 310.

[0038] In the existing technology, the impact on both valve cores during the high-pressure oil flow process may cause structural damage, thereby reducing the sealing effect of the valve cores.

[0039] The dual alternating one-way valve provided by this utility model includes a valve body 100, a second connector 200, a fourth connector 300, a first valve core 400, and a second valve core 500.

[0040] The valve body 100 extends through the first cavity 110. The first cavity 110 has a first port 101 and a second port 102 at its two ends. One end of the valve body 100 has a third port 103 leading to the middle of the first cavity 110. The other end of the valve body 100 has a second cavity 120 leading to the middle of the first cavity 110. The bottom of the second cavity 120 has a stepped structure to provide a mounting base for the subsequent second valve core 500. The outer end of the second cavity 120 has a fourth port 104, and one end of the valve body 100 has a fifth port 105 leading to the middle of the second cavity 120.

[0041] The second connector 200 is preferably, but not limited to, threadedly connected to the second port 102. The fourth connector 300 is preferably, but not limited to, threadedly connected to the fourth port 104.

[0042] The first valve core 400 is slidably disposed within the first cavity 110 and clamps the first spring 410 with the second connector 200. The first valve core 400 avoids the third port 103 and the second cavity 120 at both sliding ends. A first annular wall 420 matching the first cavity 110 is provided on the outer periphery of the end of the first valve core 400 near the second connector 200. A second annular wall 210 with an outer diameter matching the inner diameter of the first annular wall 420 is provided on the inner periphery of the end of the second connector 200 near the first valve core 400. Multiple first oil ports 211 are provided on the peripheral wall of the second annular wall 210. When the first valve core 400 approaches the second connector 200, an oil storage chamber is formed between the first annular wall 420, the second annular wall 210 and the first cavity 110. Multiple first oil ports 211 are provided on the circumferential wall of the second annular wall 210. When the first valve core 400 and the second connector 200 are further combined, hydraulic oil is squeezed out from the first oil ports 211, thereby buffering the combination process between the first valve core 400 and the second connector 200.

[0043] The second valve core 500 is slidably disposed within the second cavity 120. Both ends of the second valve core 500 avoid the fifth port 105. A third annular wall 510 matching the second cavity 120 is provided on the outer periphery of the end of the second valve core 500 near the fourth connector 300. A fourth annular wall 310 with an outer diameter matching the inner diameter of the third annular wall 510 is provided on the inner periphery of the end of the fourth connector 300 near the second valve core 500. Multiple second oil ports 311 are provided on the peripheral wall of the fourth annular wall 310. When the second valve core 500 approaches the fourth connector 300, an oil reservoir is formed between the third annular wall 510, the fourth annular wall 310, and the second cavity 120. Multiple second oil ports 311 are provided on the peripheral wall of the fourth annular wall 310. When the second valve core 500 and the fourth connector 300 further engage, hydraulic oil is squeezed out from the second oil ports 311, thus buffering the engagement process between the second valve core 500 and the fourth connector 300.

[0044] Ports 103 and 105 are the jack inlets. Ports 101 and 104 are the inlets for controlling the entry of hydraulic oil. Port 102 is the connection port for the oil reservoir.

[0045] In summary, the first valve core 400 has a first annular wall 420 on its outer periphery, the second connector 200 has a second annular wall 210 on its inner periphery, and the second annular wall 210 has multiple first oil ports 211 on its peripheral wall. The second valve core 500 has a third annular wall 510 on its outer periphery, and the fourth connector 300 has a fourth annular wall 310 on its inner periphery, and the fourth annular wall 310 has multiple second oil ports 311 on its peripheral wall. When the first valve core 400 engages with the second connector 200, hydraulic oil is squeezed out from the first oil ports 211, thus buffering the engagement process between the first valve core 400 and the second connector 200, thereby protecting the first valve core 400 and the second connector 200. Similarly, when the second valve core 500 engages with the fourth connector 300, hydraulic oil is squeezed out from the second oil ports 311, thus buffering the engagement process between the second valve core 500 and the fourth connector 300, thereby protecting the second valve core 500 and the fourth connector 300.

[0046] Reference Figure 2 and 5 In one embodiment, a hollow spring bracket 320 is provided in the middle of the fourth connector 300, and a second spring 330 is provided on the spring bracket 320. The end of the second spring 330 away from the spring bracket 320 supports the second valve core 500. When the second valve core 500 is engaged with the fourth connector 300, the second spring 330 is in a compressed state.

[0047] In this embodiment, a hollowed-out spring bracket 320 is provided in the middle of the fourth connector 300 to prevent obstruction of the hydraulic oil flow. The elastic force of the second spring 330 assists in preventing excessive impact between the second valve core 500 and the fourth connector 300, thus avoiding structural damage.

[0048] In one embodiment, the two ends of the second spring 330 are respectively connected to the second valve core 500 and the spring bracket 320. When the second valve core 500 is located at the bottom of the second cavity 120, the second spring 330 is in a stretched state.

[0049] In this embodiment, both ends of the second spring 330 are fixed, specifically connected to the second valve core 500 and the spring bracket 320, respectively. During operation, when the second valve core 500 moves towards the fourth connector 300, the second spring 330 is compressed, providing a cushioning effect through its elastic force; when the second valve core 500 moves away from the fourth connector 300, the second spring 330 is stretched, again providing a cushioning effect through its elastic force. Thus, the movement of the second valve core 500 in both directions is cushioned.

[0050] In one embodiment, the spring bracket 320 and the fourth connector 300 are connected by a threaded connection.

[0051] In this embodiment, the spring bracket 320 is fixed by a threaded connection, so that the spring bracket 320 can be stably fixed.

[0052] Reference Figures 1 to 7 In one embodiment, the inner end of the second opening 102 is provided with two stepped structures that gradually expand from the inside to the outside. The stepped structure inside the second opening 102 clamps the first sealing ring 600 between it and the second connector 200, and the stepped structure outside the second opening 102 abuts against the second connector 200.

[0053] In this embodiment, the structure of the second joint 102 is designed such that during the installation of the second connector 200, the second connector 200 abuts against the outer stepped structure and clamps the first sealing ring 600 with the inner stepped structure. By limiting the position of the outer stepped structure, excessive compression of the first sealing ring 600 is avoided.

[0054] Reference Figures 1 to 7 In one embodiment, the inner end of the fourth opening 104 is provided with two stepped structures that gradually expand from the inside to the outside. The stepped structure inside the fourth opening 104 and the fourth connector 300 hold a second sealing ring 700, and the stepped structure outside the fourth opening 104 abuts against the fourth connector 300.

[0055] In this embodiment, the structure of the fourth joint 104 is designed such that during the installation of the fourth connector 300, the fourth connector 300 abuts against the outer stepped structure and clamps the second sealing ring 700 with the inner stepped structure. By limiting the position of the outer stepped structure, excessive compression of the second sealing ring 700 is avoided.

[0056] Reference Figures 1 to 7 In one embodiment, the first sealing ring 600 extends between the second annular wall 210 and the first cavity 110.

[0057] In this embodiment, the shape of the first sealing ring 600 is designed such that it extends between the second annular wall 210 and the first cavity 110, with a portion of the first sealing ring 600 clamped between the second annular wall 210 and the first cavity 110. At this point, the first sealing ring 600 can provide radial and axial sealing effects.

[0058] Reference Figures 1 to 7 In one embodiment, the second sealing ring 700 extends between the fourth annular wall 310 and the second cavity 120.

[0059] In this embodiment, the second sealing ring 700 is designed to extend between the fourth annular wall 310 and the second cavity 120, with a portion of the second sealing ring 700 sandwiched between the fourth annular wall 310 and the second cavity 120. At this point, the second sealing ring 700 can provide radial and axial sealing effects.

[0060] Reference Figures 1 to 7 In one embodiment, the first port 101, the third port 103, and the fifth port 105 are respectively connected to a first connector, a third connector, and a fifth connector.

[0061] In this embodiment, the adaptation range is improved by changing the first connector, the third connector and the fifth connector, and the situation where the working port has problems and the entire valve body 100 needs to be repaired or replaced is avoided.

[0062] In one embodiment, the second connector 200 is threaded to the second port 102, and the fourth connector 300 is threaded to the fourth port 104.

[0063] In this embodiment, a connection and fixing method for the second connector 200 and the fourth connector 300 is provided, which has the advantages of simple processing, convenient operation and stable performance.

[0064] In summary, the dual alternating check valve provided by this utility model has a first annular wall 420 on the outer periphery of the first valve core 400, a second annular wall 210 on the inner periphery of the second connector 200, and multiple first oil ports 211 on the circumferential wall of the second annular wall 210; a third annular wall 510 on the outer periphery of the second valve core 500; and a fourth annular wall 310 on the inner periphery of the fourth connector 300, with multiple second oil ports 311 on the circumferential wall of the fourth annular wall 310. When the first valve core 400 engages with the second connector 200, hydraulic oil is squeezed out from the first oil ports 211, thus buffering the engagement process between the first valve core 400 and the second connector 200 and protecting them. When the second valve core 500 engages with the fourth connector 300, hydraulic oil is squeezed out from the second oil ports 311, thus buffering the engagement process between the second valve core 500 and the fourth connector 300. This protects the second valve core 500 and the fourth connector 300.

[0065] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A dual alternating check valve, characterized in that, include: The valve body extends through the first cavity in width. The two ends of the first cavity are a first port and a second port, respectively. One end of the valve body is provided with a third port that leads to the middle of the first cavity. The other end of the valve body is provided with a second cavity that leads to the middle of the first cavity. The outer end of the second cavity is a fourth port. One end of the valve body is provided with a fifth port that leads to the middle of the second cavity. The second connector is connected to the second port; The fourth connector is connected to the fourth port; A first valve core is slidably disposed in the first cavity and clamps a first spring with the second connector. A first annular wall matching the first cavity is provided on the outer periphery of one end of the first valve core near the second connector. A second annular wall with an outer diameter matching the inner diameter of the first annular wall is provided on the inner periphery of the second connector near the end of the first valve core. A plurality of first oil ports are provided on the peripheral wall of the second annular wall. The second valve core is slidably disposed in the second cavity. The outer periphery of the second valve core near the fourth connector is provided with a third annular wall that matches the second cavity. The inner periphery of the fourth connector near the second valve core is provided with a fourth annular wall whose outer diameter matches the inner diameter of the third annular wall. Multiple second oil ports are provided on the peripheral wall of the fourth annular wall.

2. The dual alternating check valve according to claim 1, characterized in that, The fourth connector has a hollowed-out spring bracket in the middle, and a second spring is provided on the spring bracket. The end of the second spring away from the spring bracket supports the second valve core. When the second valve core is engaged with the fourth connector, the second spring is in a compressed state.

3. The dual alternating check valve according to claim 2, characterized in that, The two ends of the second spring are respectively connected to the second valve core and the spring bracket. When the second valve core is located at the bottom of the second cavity, the second spring is in a stretched state.

4. The dual alternating check valve according to claim 3, characterized in that, The spring bracket and the fourth connector are connected by a threaded connection.

5. The dual alternating check valve according to claim 1, characterized in that, The inner end of the second opening has two stepped structures that gradually expand from the inside to the outside. The stepped structure inside the second opening clamps the first sealing ring between itself and the second connector, while the stepped structure outside the second opening abuts against the second connector.

6. The dual alternating check valve according to claim 5, characterized in that, The inner end of the fourth opening has two stepped structures that gradually expand from the inside to the outside. The stepped structure inside the fourth opening and the fourth connector hold a second sealing ring. The stepped structure outside the fourth opening abuts against the fourth connector.

7. The dual alternating check valve according to claim 6, characterized in that, The first sealing ring extends between the second annular wall and the first cavity.

8. The dual alternating check valve according to claim 7, characterized in that, The second sealing ring extends between the fourth annular wall and the second cavity.

9. The dual alternating check valve according to any one of claims 1 to 8, characterized in that, The first port, the third port, and the fifth port are respectively connected to a first connector, a third connector, and a fifth connector.

10. The dual alternating check valve according to any one of claims 1 to 8, characterized in that, The second connector and the second opening are connected by a thread, and the fourth connector and the fourth opening are connected by a thread.

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