One-way valve of multi-valve-plate structure
By adopting a multi-valve plate structure and a ° cone sealing structure in the check valve, the main and secondary valve plates are upwards under the action of fluid pressure to open multiple overflow channels, solving the resistance of existing check valves under high flow conditions and Hydraulic loss problems extend service life.
Patent Information
- Application Number
- CN202421446907.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-06-24
AI Technical Summary
Existing check valves are prone to form large resistance under high flow conditions, resulting in large hydraulic losses and fluid erosion to damage the valve, limiting system flow.
A one-way valve design adopts a multi-valve plate structure, in which a ° conical sealing structure is adopted between the main valve plate and the valve seat. The main valve plate is upwardly affected by the fluid pressure and opens the annular flow channel, and the secondary valve plate is also upwardly affected by the pressure. The passages between the main valve plates form multiple overflow channels to reduce flow velocity and hydraulic loss.
By adding multiple overflow channels, the flow rate and hydraulic loss are reduced, the high flow rate fluid is avoided to erode the inner parts of the valve, and the service life of the check valve is extended.
Smart Images
Figure CN222526962U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of one-way valves, in particular to a one-way valve with a multi-valve plate structure. Background Art
[0002] A check valve is an automatic valve that allows fluid to flow in only one direction. It is usually used in hydraulic and pneumatic systems to prevent the medium from flowing back. A check valve is an important fluid control component that ensures that the fluid flows in a predetermined direction in the pipeline system, thereby protecting the stable operation of the system and the safety of the equipment. Commonly used check valves are generally single valve ball or single valve plate structures, and the valve ball or valve plate cooperates with the valve seat to form a one-way sealing structure.
[0003] When the valve ball or valve plate is opened, the liquid can only flow through the annular channel between the valve ball or valve plate and the valve body, and due to space or structural limitations, the one-way valve cannot be designed to be very large. In this way, due to the existence of the valve ball or valve plate, the flow area through which the liquid passes is limited. When the flow rate is large, a greater resistance is formed, resulting in greater hydraulic losses. At the same time, the high-velocity liquid flushes the components in the one-way valve, causing damage and rendering the one-way valve ineffective. In severe cases, it will limit the flow of the piping system, causing the system flow to fail to meet the design requirements. Utility Model Content
[0004] 1. Technical issues to be resolved
[0005] In view of the deficiencies in the prior art, the utility model provides a one-way valve with a multi-valve plate structure, which has the advantages of being able to increase the flow area for liquid to pass through, effectively reducing the hydraulic loss when the liquid passes through the one-way valve, and solving the above-mentioned technical problems.
[0006] (II) Technical solution
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a one-way valve with a multi-valve plate structure, comprising a valve body, a main valve plate, a sub-valve plate, a cross-shaped limit device, a trapezoidal connecting rod, a convex connecting rod, a beam-shaped limit device and a valve seat, the interior of the valve body is fixedly connected to the valve seat, the main valve plate is arranged in the valve seat, a plurality of sub-valve plates are arranged in the main valve plate, and a trapezoidal connecting rod is connected to the center of the end surface of the main valve plate, a cross-shaped limit device is fixedly connected to the inner wall of the valve body, a convex connecting rod is connected to the center of the end surface of the sub-valve plate, and a beam-shaped limit device is fixedly connected to the bottom of the main valve plate.
[0008] Preferably, a °-conical sealing structure is adopted between the main valve plate and the valve seat, and the main valve plate is located at the inner center of the valve body.
[0009] Through the above technical solution, a ° conical sealing state is maintained between the main valve plate and the valve seat when no fluid passes through. If fluid passes through the inside of the valve body, the main valve plate will move upward under the action of hydraulic force, opening the annular flow channel between the main valve plate and the valve body to allow the fluid to pass through. If the fluid flows back, the main valve plate will close in the valve seat. The greater the pressure of the fluid, the stronger the sealing between the main valve plate and the valve seat. In this way, only one-way flow can be allowed in the valve body to prevent backflow of the fluid medium.
[0010] Preferably, a °-conical sealing structure is also adopted between the auxiliary valve plate and the main valve plate, and the auxiliary valve plate is provided with several °-conical sealing structures around the axis of the main valve plate.
[0011] Through the above technical solution, when the fluid passes through the interior of the valve body, the main valve plate moves upward under the action of the fluid pressure to open the annular flow channel of the valve body, and because the pressure of the fluid will always act on the bottom of the main valve plate, the pressure of the fluid will also act on the bottom of the auxiliary valve plate. At this time, the auxiliary valve plate will also move upward, thereby opening the channel between the auxiliary valve plate and the main valve plate to allow the fluid to pass through. Since multiple auxiliary valve plates can be provided, there are multiple channels for the fluid to pass through. In this way, the internal space of the valve body is utilized, and the flow channel of the valve body is made as large as possible, thereby reducing the flow rate and reducing hydraulic losses. At the same time, it also avoids the scouring of the internal components of the one-way valve by the high-flow fluid, greatly extending the service life of the one-way valve.
[0012] Preferably, the cross-shaped limiting device is fixedly connected to the inner wall of the valve body, and the top end of the trapezoidal connecting rod is inserted into the top center of the cross-shaped limiting device.
[0013] Through the above technical solution, when the fluid enters the valve body and acts on the bottom of the main valve plate, the main valve plate moves upward and drives the trapezoidal connecting rod upward. Since the trapezoidal connecting rod is inserted into the cross-shaped limit device, when the trapezoidal connecting rod is driven upward to the middle part, the trapezoidal connecting rod cannot pass through because the diameter of the lower half is larger than the circular hole in the center of the cross-shaped limit device. Therefore, the cross-shaped limit device cooperates with the trapezoidal connecting rod to limit the upward height of the main valve plate.
[0014] Preferably, the convex head connecting rod is inserted into the interior of the beam-shaped limiting device, and a convex head is provided at the bottom of the convex head connecting rod.
[0015] Through the above technical solution, when the auxiliary valve plate moves upward under the action of fluid pressure, it can drive the convex head connecting rod upward. The convex head at the bottom of the convex head connecting rod cannot pass through the center hole of the beam-shaped limit device, so the upward height of the auxiliary valve plate is controlled by the convex head connecting rod and the beam-shaped limit device.
[0016] Compared with the prior art, the utility model provides a one-way valve with a multi-valve plate structure, which has the following beneficial effects:
[0017] 1. The utility model sets a plurality of auxiliary valve plates. When the fluid passes through the interior of the valve body, the main valve plate moves upward under the action of the fluid pressure to open the annular flow channel of the valve body. Since the pressure of the fluid will always act on the bottom of the main valve plate, the pressure of the fluid will also act on the bottom of the auxiliary valve plate. At this time, the auxiliary valve plate will also move upward, so that the channel between the auxiliary valve plate and the main valve plate can be opened to allow the fluid to pass through. Since a plurality of auxiliary valve plates can be set, there are a plurality of channels for the fluid to pass through. In this way, the internal space of the valve body is utilized, so that the flow channel of the valve body is as large as possible, thereby reducing the flow rate and reducing the hydraulic loss. At the same time, it also avoids the scouring of the internal components of the check valve by the high-flow fluid, greatly extending the service life of the check valve.
[0018] 2. The utility model can control the upward height of the main valve plate by setting a cross-shaped limit device in conjunction with a trapezoidal connecting rod, and can control the upward height of the auxiliary valve plate by setting a convex connecting rod and a beam-shaped limit device. When the fluid passes through, the main valve plate opens and the auxiliary valve plate also opens at the same time to form a large liquid channel. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a cross-sectional schematic diagram of the structure of the utility model;
[0020] Figure 2 It is a schematic diagram of the end surface of the main valve plate of the utility model structure.
[0021] Among them: 1. cross-shaped limit device; 2. trapezoidal connecting rod; 3. valve body; 4. auxiliary valve plate; 5. main valve plate; 6. beam-shaped limit device; 7. convex connecting rod; 8. valve seat. DETAILED DESCRIPTION
[0022] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. 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.
[0023] See also Figure 1-Figure 2 A one-way valve with a multi-valve plate structure, comprising a valve body 3, a main valve plate 5, an auxiliary valve plate 4, a cross-shaped limit device 1, a trapezoidal connecting rod 2, a convex connecting rod 7, a beam-shaped limit device 6 and a valve seat 8. The valve body 3 is fixedly connected to the valve seat 8, the main valve plate 5 is arranged in the valve seat 8, a plurality of auxiliary valve plates 4 are arranged in the main valve plate 5, and the trapezoidal connecting rod 2 is connected to the center of the end surface of the main valve plate 5, the cross-shaped limit device 1 is fixedly connected to the inner wall of the valve body 3, the convex connecting rod 7 is connected to the center of the end surface of the auxiliary valve plate 4, and the beam-shaped limit device 6 is fixedly connected to the bottom of the main valve plate 5.
[0024] Specifically, a 90° cone sealing structure is adopted between the main valve plate 5 and the valve seat 8, and the main valve plate 5 is located at the inner center of the valve body 3. The advantage is that when no fluid passes through, the main valve plate 5 and the valve seat 8 maintain a 90° cone sealing state. If fluid passes through the inside of the valve body 3, the main valve plate 5 moves upward under the action of hydraulic force, opens the annular flow channel between the main valve plate 5 and the valve body 3, and allows the fluid to pass through. If the fluid flows back, the main valve plate 5 will close in the valve seat 8. The greater the pressure of the fluid, the stronger the sealing between the main valve plate 5 and the valve seat 8. In this way, only one-way flow can be allowed in the valve body 3 to prevent the fluid medium from flowing back.
[0025] Specifically, a 90° cone sealing structure is also adopted between the auxiliary valve plate 4 and the main valve plate 5, and the auxiliary valve plate 4 is provided with several seals around the axis of the main valve plate 5. The advantage is that when the fluid passes through the inside of the valve body 3, the main valve plate 5 is upwardly moved by the fluid pressure to open the annular flow channel of the valve body 3, and since the pressure of the fluid will always act on the bottom of the main valve plate 5, the pressure of the fluid will also act on the bottom of the auxiliary valve plate 4, and the auxiliary valve plate 4 will also move upward at this time, so that the channel between the auxiliary valve plate 4 and the main valve plate 5 can be opened to allow the fluid to pass through. Since multiple auxiliary valve plates 4 can be provided, there are multiple channels for the fluid to pass through, so that the internal space of the valve body 3 is utilized, so that the flow channel of the valve body 3 is as large as possible, thereby reducing the flow rate and reducing the hydraulic loss. At the same time, it also avoids the scouring of the internal components of the check valve by the high-flow fluid, greatly extending the service life of the check valve.
[0026] Specifically, the cross-shaped limit device 1 is fixedly connected to the inner wall of the valve body 3, and the top end of the trapezoidal connecting rod 2 is inserted in the top center of the cross-shaped limit device 1. The advantage is that when the fluid enters the valve body 3 and acts on the bottom of the main valve plate 5, the main valve plate 5 moves upward and drives the trapezoidal connecting rod 2 upward. Since the trapezoidal connecting rod 2 is inserted in the cross-shaped limit device 1, when the trapezoidal connecting rod 2 is driven to move upward to the middle part, the trapezoidal connecting rod 2 cannot pass through because the diameter of the lower half is larger than the circular hole in the center of the cross-shaped limit device 1. Therefore, the cross-shaped limit device 1 cooperates with the trapezoidal connecting rod 2 to limit the upward height of the main valve plate 5.
[0027] Specifically, the convex head connecting rod 7 is inserted into the interior of the beam-shaped limiting device 6, and a convex head is provided at the bottom of the convex head connecting rod 7. The advantage is that when the auxiliary valve plate 4 moves upward under the action of fluid pressure, it can drive the convex head connecting rod 7 to move upward, and the convex head at the bottom of the convex head connecting rod 7 cannot pass through the central hole of the beam-shaped limiting device 6, so the upward height of the auxiliary valve plate 4 is controlled by the convex head connecting rod 7 and the beam-shaped limiting device 6.
[0028] During use, after the fluid enters the valve body 3, the main valve plate 5 is acted upon by the fluid pressure to drive the trapezoidal connecting rod 2 upward, and the auxiliary valve plate 4 is also acted upon by the fluid pressure to move upward, thereby opening the passage between the auxiliary valve plate 4 and the main valve plate 5 and the passage between the main valve plate 5 and the valve body 3, and allowing the fluid to pass through. Since multiple auxiliary valve plates 4 can be provided, multiple passages are provided for the fluid to pass through, thus utilizing the internal space of the valve body 3 and making the flow passage of the valve body 3 as large as possible, thereby reducing the flow velocity and hydraulic loss. At the same time, it also avoids the scouring of the internal components of the one-way valve by the high-velocity fluid, thereby greatly extending the service life of the one-way valve.
[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A one-way valve with a multi-valve plate structure, comprising a valve body (3), a main valve plate (5), an auxiliary valve plate (4), a cross-shaped limit device (1), a trapezoidal connecting rod (2), a convex connecting rod (7), a cross-beam limit device (6) and a valve seat (8), characterized in that: The valve body (3) is fixedly connected to a valve seat (8) inside, a main valve plate (5) is arranged inside the valve seat (8), a plurality of auxiliary valve plates (4) are arranged inside the main valve plate (5), and a trapezoidal connecting rod (2) is connected to the center of the end face of the main valve plate (5), a cross-shaped limiting device (1) is fixedly connected to the inner wall of the valve body (3), a convex connecting rod (7) is connected to the center of the end face of the auxiliary valve plate (4), and a cross-beam-shaped limiting device (6) is fixedly connected to the bottom of the main valve plate (5).
2. A one-way valve with a multi-valve plate structure according to claim 1, characterized in that: A 90° conical sealing structure is adopted between the main valve plate (5) and the valve seat (8), and the main valve plate (5) is located at the inner center of the valve body (3).
3. The one-way valve with a multi-valve plate structure according to claim 1, characterized in that: A 90° conical sealing structure is also adopted between the auxiliary valve plate (4) and the main valve plate (5), and a plurality of auxiliary valve plates (4) are arranged around the axis of the main valve plate (5).
4. The one-way valve with a multi-valve plate structure according to claim 1, characterized in that: The cross-shaped limiting device (1) is fixedly connected to the inner wall of the valve body (3), and the top end of the trapezoidal connecting rod (2) is inserted into the top center of the cross-shaped limiting device (1).
5. The one-way valve with a multi-valve plate structure according to claim 1, characterized in that: The convex head connecting rod (7) is inserted into the interior of the beam-shaped limiting device (6), and a convex head is arranged at the bottom of the convex head connecting rod (7).