RVP type hydraulic one-way valve

Abstract

The utility model discloses an RVP type hydraulic one-way valve which comprises a plate type valve body, a liquid inlet and a liquid outlet, the liquid inlet and the liquid outlet are formed in the two sides of the bottom end of the plate type valve body respectively, and a one-way communicating front cavity and a one-way communicating rear cavity which are communicated with the liquid inlet and the liquid outlet are formed in the two ends of the interior of the plate type valve body respectively. A valve sleeve is fixed to the opening end of the one-way conducting front cavity, and a rear sealing seat is fixed to one end in the plate type valve body. According to the one-way valve, impact between the conical valve head and the wall face of the cavity channel in the opening and closing process is reduced, the service life of the one-way valve is prolonged, the stability of the one-way valve is improved, meanwhile, due to the fact that a smoother surface is adopted for contact of the conical valve head and the valve sleeve, the sealing performance can be improved, and leakage and pressure loss of liquid in the valve body are effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic one-way valves, in particular to an RVP type hydraulic one-way valve. Background Art

[0002] The flat hydraulic oil check valve is a crucial component in the hydraulic system. Its structural design is simple and sophisticated. The basic principle is to rely on pressure difference to control the flow direction of the fluid. Its structure is mainly composed of valve body, valve core, spring and sealing ring. The valve body is designed with a flow channel, and the valve core is tightly fitted on the valve seat through the action of the spring to form a closed channel. When the fluid flows in the forward direction, the pressure of the fluid acts on the valve core. When this pressure exceeds the resistance of the spring, the valve core will be pushed open to form a passage for the fluid to pass through. During reverse flow, the valve core will fit more closely to the valve seat, preventing the reverse flow of the fluid, thereby realizing the basic function of the one-way valve. However, after the current one-way valve is opened and closed for a long time, the valve core will frequently impact the flow channel cavity in the valve body under the action of the hydraulic oil pressure and the spring. Especially under working conditions where the hydraulic oil pressure varies in a large range, the impact on the valve core when closed will be more severe, which can easily lead to damage to the valve core and the flow channel cavity surface, and then cause leakage or valve core jamming and other problems. For the hydraulic oil system, the one-way valve cannot completely isolate the fluid in the closed state, which also leads to unstable pressure in the hydraulic oil system. Utility Model Content

[0003] The utility model aims to provide an RVP type hydraulic one-way valve, by adding a valve sleeve in the conducting cavity of a plate valve body and adding a protective member at the end of a valve head, through which the valve head contacts the valve sleeve, so as to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an RVP type hydraulic one-way valve, comprising a plate-type valve body and a liquid inlet and a liquid discharge port respectively opened on both sides of the bottom end of the plate-type valve body, the two ends of the inner part of the plate-type valve body are respectively provided with a one-way conducting front cavity and a one-way conducting rear cavity which are interconnected with the liquid inlet and the liquid discharge port, a valve sleeve is fixed to the open end of the one-way conducting front cavity, a rear sealing seat is fixed to one end of the inner part of the plate-type valve body, and an annular hollow valve seat is installed on the outer wall of the side of the rear sealing seat close to the one-way conducting rear cavity, a T-type rod sleeve is fixed to the outer wall of one side of the annular hollow valve seat, a first spring is wound around the outer circumferential surface of the T-type rod sleeve, a conical valve head for blocking the valve sleeve opening is fixed to the top end of the first spring, and a protective member is installed on the outer circumferential surface of the conical valve head.

[0005] Preferably, mounting holes are provided at the corners of the bottom end of the plate-type valve body, and a connecting sleeve is fixed on the outer wall of one side of the plate-type valve body.

[0006] Preferably, a valve stem is slidably mounted inside the T-rod sleeve, and one end of the valve stem passes through the outside of the T-rod sleeve and is fixedly connected to an outer wall of one side of the conical valve head.

[0007] Preferably, a second spring is installed inside the annular hollow valve seat, a connecting head is fixed to the top end of the second spring, and one end of the connecting head is fixedly connected to the other end of the valve stem.

[0008] Preferably, the valve sleeve is made of alloy steel, and the tensile strength of the valve sleeve is 400Mpa to 600Mpa.

[0009] Preferably, the protective member is a flexible trumpet cover fixed to the outer peripheral surface of the conical valve head, and the flexible trumpet cover is made of rubber material.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: the RVP type hydraulic one-way valve is provided with a conical valve head and a valve sleeve and other structures that cooperate with each other, the end of the conical valve head will contact the valve sleeve, and the protective part on the outer peripheral surface of the conical valve head can effectively reduce the impact force between itself and the valve sleeve, thereby reducing the direct contact between the conical valve head and the one-way guiding front cavity, and reducing the impact of the conical valve head with the cavity wall during the opening and closing process, thereby improving the service life and stability of the one-way valve, and at the same time, the contact between the conical valve head and the valve sleeve adopts a smoother surface, which can improve the sealing performance and effectively reduce the leakage and pressure loss of the liquid in the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0012] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0013] Figure 3 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 4 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0015] In the figure: 1, plate-type valve body; 101, liquid inlet; 102, liquid outlet; 2, mounting hole; 3, connecting sleeve; 4, one-way conducting front chamber; 5, one-way conducting rear chamber; 6, valve sleeve; 7, rear sealing seat; 8, annular hollow valve seat; 801, second spring; 802, connecting head; 9, T-rod sleeve; 10, conical valve head; 1001, flexible horn cover; 1002, valve stem; 11, first spring. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-4 The utility model provides an embodiment: an RVP type hydraulic one-way valve, comprising a plate-type valve body 1 and a liquid inlet 101 and a liquid outlet 102 respectively provided at both sides of the bottom end of the plate-type valve body 1, a mounting hole 2 is provided at the corner position of the bottom end of the plate-type valve body 1, and a connecting sleeve 3 is fixed on the outer wall of one side of the plate-type valve body 1;

[0018] A one-way front chamber 4 and a one-way rear chamber 5 which are interconnected with a liquid inlet 101 and a liquid outlet 102 are respectively arranged at the two ends inside the plate-type valve body 1. A valve sleeve 6 is fixed to the opening end of the one-way front chamber 4. A rear sealing seat 7 is fixed to one end inside the plate-type valve body 1. An annular hollow valve seat 8 is installed on the outer wall of the rear sealing seat 7 close to the one-way rear chamber 5. A T-shaped rod sleeve 9 is fixed to the outer wall of one side of the annular hollow valve seat 8. A first spring 11 is wound around the outer circumference of the T-shaped rod sleeve 9. A conical valve head 10 for blocking the opening of the valve sleeve 6 is fixed to the top end of the first spring 11. A protective member is installed on the outer circumference of the conical valve head 10.

[0019] The valve sleeve 6 is made of alloy steel, and the tensile strength of the valve sleeve 6 is 400Mpa to 600Mpa. The alloy steel has high strength and hardness, so that the valve sleeve 6 can maintain structural stability and integrity when subjected to high pressure and impact loads in the hydraulic system. The tensile strength is between 400Mpa and 600Mpa, which is sufficient to cope with the working conditions in most hydraulic systems, ensuring that the valve sleeve will not be deformed or damaged during use;

[0020] A second spring 801 is installed inside the annular hollow valve seat 8, a connector 802 is fixed to the top of the second spring 801, one end of the connector 802 is fixedly connected to the other end of the valve stem 1002. Due to the double spring design, the conical valve head 10 can be reset more quickly, improving the anti-interference ability of the one-way valve in harsh working environments, and ensuring the stability and reliability of the system;

[0021] A valve stem 1002 is slidably mounted inside the T-shaped rod sleeve 9, one end of the valve stem 1002 penetrates the outside of the T-shaped rod sleeve 9 and is fixedly connected to an outer wall of one side of the conical valve head 10;

[0022] When the hydraulic oil impacts the conical valve head 10, the conical valve head 10 will drive the valve stem 1002 and the connector 802 to slide toward the discharge port 102, so that the first spring 11 and the second spring 801 are in a compressed state. In this process, the T-shaped rod sleeve 9 guides and supports the sliding of the valve stem 1002, thereby ensuring the position accuracy of the conical valve head 10 during the operation process.

[0023] The protective part is a flexible trumpet cover 1001 fixed on the outer peripheral surface of the conical valve head 10. The flexible trumpet cover 1001 plays a role of buffering and shock absorption. When the conical valve head 10 is impacted or vibrated during the opening and closing process, the flexible trumpet cover 1001 can absorb part of the energy, reducing the impact of the impact on the valve sleeve 6. The flexible trumpet cover 1001 is made of rubber material. Due to the softness of the trumpet cover, it can better fit the surface of the valve sleeve 6, forming a more perfect seal, and effectively preventing liquid leakage.

[0024] When the embodiment of the present application is in use, the staff first connects the liquid inlet 101 to the hydraulic oil supply end. At this time, the hydraulic oil will enter the one-way conduction front chamber 4 through the liquid inlet 101. When the hydraulic oil pressure continues to increase, the hydraulic oil will impact the conical valve head 10 and make the conical valve head 10 move toward the rear sealing seat 7. At this time, the first spring 11 on the outer peripheral surface of the T-rod sleeve 9 will be in a compressed state, and then the hydraulic oil will enter the one-way conduction rear chamber 5 and enter the next load device from the drain port 102. When the hydraulic oil pressure gradually decreases and is not enough to resist the elastic force of the first spring 11, the conical valve head 10 is blocked at the open end of the one-way conduction front chamber 4, so that the one-way conduction front chamber 4 and the one-way conduction rear chamber 5 are closed. The cavity 5 is isolated, that is, the one-way valve is in a closed state. During the closing process of the one-way valve, the end of the conical valve head 10 will contact the valve sleeve 6, and the protective part on the outer peripheral surface of the conical valve head 10 can effectively reduce the impact force between itself and the valve sleeve 6, thereby reducing the direct contact between the conical valve head 10 and the one-way guiding front cavity 4, reducing the impact of the conical valve head 10 with the cavity wall during the opening and closing process, reducing the wear and damage of the conical valve head 10 and the one-way guiding front cavity 4, and improving the service life and stability of the one-way valve. At the same time, the contact between the conical valve head 10 and the valve sleeve 6 adopts a smoother surface, which can improve the sealing performance and reduce the possibility of leakage, and can effectively reduce the leakage and pressure loss of the liquid in the valve body.

[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An RVP type hydraulic one-way valve, characterized in that: The invention comprises a plate-type valve body (1) and a liquid inlet (101) and a liquid outlet (102) respectively provided on both sides of the bottom end of the plate-type valve body (1); the two ends inside the plate-type valve body (1) are respectively provided with a one-way conducting front cavity (4) and a one-way conducting rear cavity (5) which are mutually connected with the liquid inlet (101) and the liquid outlet (102); the opening end of the one-way conducting front cavity (4) is fixed with a valve sleeve (6); one end inside the plate-type valve body (1) is fixed with a rear sealing seat (7), and an annular hollow valve seat (8) is installed on the outer wall of one side of the rear sealing seat (7) close to the one-way conducting rear cavity (5), a T-shaped rod sleeve (9) is fixed on the outer wall of one side of the annular hollow valve seat (8), a first spring (11) is wound around the outer peripheral surface of the T-shaped rod sleeve (9), a conical valve head (10) for blocking the opening of the valve sleeve (6) is fixed at the top end of the first spring (11), and a protective member is installed on the outer peripheral surface of the conical valve head (10).

2. The RVP type hydraulic one-way valve according to claim 1, characterized in that: The corners of the bottom end of the plate-type valve body (1) are all provided with mounting holes (2), and a connecting sleeve (3) is fixed on the outer wall of one side of the plate-type valve body (1).

3. The RVP type hydraulic one-way valve according to claim 1, characterized in that: A valve stem (1002) is slidably mounted inside the T-shaped rod sleeve (9), and one end of the valve stem (1002) penetrates the outside of the T-shaped rod sleeve (9) and is fixedly connected to an outer wall of one side of the conical valve head (10).

4. The RVP type hydraulic one-way valve according to claim 3, characterized in that: A second spring (801) is installed inside the annular hollow valve seat (8), a connecting head (802) is fixed to the top end of the second spring (801), and one end of the connecting head (802) is fixedly connected to the other end of the valve stem (1002).

5. The RVP type hydraulic one-way valve according to claim 1, characterized in that: The valve sleeve (6) is made of a component made of alloy steel, and the tensile strength of the valve sleeve (6) is 400 MPa to 600 MPa.

6. The RVP type hydraulic one-way valve according to claim 1, characterized in that: The protective component is a flexible trumpet cover (1001) fixed on the outer peripheral surface of the conical valve head (10), and the flexible trumpet cover (1001) is made of rubber material.

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