Check valve
By introducing a water collecting plate and a guide plate structure into the check valve, the problems of poor water flow and reverse flow sealing of the spring-type check valve under negative pressure are solved, and low-pressure opening and smooth flow are achieved, as well as effective prevention of backflow.
Patent Information
- Application Number
- CN202422317921.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-09-23
AI Technical Summary
The spring-loaded check valve does not flow smoothly under negative pressure, requires a larger pressure to open, and cannot effectively seal when reverse flow occurs.
The water collecting plate and guide plate structure are used to replace the traditional spring. The water flow pressure and negative pressure difference are used to realize the automatic opening and closing of the valve. The water flow impacts the movement of the sealing ring and the blocking plate, and the sealing gasket is combined to realize the sealing of the flow channel.
It reduces the water flow pressure required for the valve to be turned on, ensures smooth water flow, and effectively prevents backflow in the event of reverse flow, thereby improving the efficiency and sealing of the valve.
Smart Images
Figure CN223424712U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a check valve, belonging to the technical field of valves. Background Art
[0002] A check valve, also known as a one-way valve, is a valve used to control the direction of fluid flow. Its primary function is to prevent reverse flow within a system, protecting equipment and systems. Check valves are commonly used in piping systems to ensure fluid flow in only one direction, preventing reverse flow. There are several different types of check valves, depending on their structure, including lift check valves, ball check valves, butterfly check valves, and spring-loaded check valves.
[0003] The disc of a spring-loaded check valve is controlled by a spring and is suitable for low flow rates and high precision applications. However, due to the elastic restoring force of the spring, a high pressure is required to open the valve. When used under negative pressure, the water flow force is significantly reduced, resulting in uneven water flow. Therefore, the present invention proposes a check valve. Utility Model Content
[0004] Based on the above background, the purpose of the present invention is to provide a check valve to solve the problems in the background technology.
[0005] The utility model provides the following technical solutions:
[0006] A check valve comprises a valve body, wherein a channel is provided inside the valve body, a valve core is provided in the center of the channel, a through hole is provided in the center of the valve core, a plurality of flow channels are provided around the through hole on the valve core, a connecting shaft is slidably provided in the through hole, both ends of the connecting shaft extend out of the through hole, a trumpet-shaped water collecting plate is provided at the left end of the connecting shaft, a sealing plate is provided on the right side of the water collecting plate on the connecting shaft, the sealing plate and the water collecting plate are located at the left end of the valve core, a first threaded portion is provided on the outer wall of the right end of the connecting shaft near the end position, and a trumpet-shaped guide plate is threadedly connected to the first threaded portion.
[0007] Preferably, the diameter of the blocking plate is smaller than the diameter of the channel, and the diameter of the blocking plate is larger than the diameter of the circumscribed circle of several of the flow channels. A sealing gasket is provided at one end of the blocking plate away from the water collecting plate, and the sealing gasket is sleeved on the connecting shaft.
[0008] Preferably, the water collecting plate and the guide plate are oriented in the same direction, and the diameter of the guide plate is smaller than the diameter of the inscribed circle of the plurality of flow channels.
[0009] Preferably, the diameter of the water collecting plate is smaller than the diameter of the channel, and the outer wall of the connecting shaft is a smooth surface.
[0010] Preferably, the tip ends of the water collecting plate and the guide plate are the water inlet end of the valve body, and the concave ends of the water collecting plate and the guide plate are the water outlet end of the valve body.
[0011] Preferably, both ends of the valve body are provided with flanges for connecting to pipelines.
[0012] Compared with the prior art, the utility model has the following advantages:
[0013] The utility model relates to a check valve. When water enters, water flows directly through the flow channel and impacts the sealing ring. Under the pressure of the water flow, the blocking plate and the sealing ring move toward the water outlet under the action of the water pressure. At this time, the connecting shaft moves inward in the through hole, and the blocking plate and the sealing ring lose the flow channel blocking valve body conduction. When water stops, the water flow at the water inlet end flows back to the water inlet end, and the water flow at the water outlet end flows back to the water inlet end. After the water flows through the inner concave surface of the guide plate and the water collecting plate, and the pressure at the water inlet end disappears and forms a negative pressure, it can drive the connecting shaft, the blocking plate, the guide plate and the water collecting plate to move toward the water inlet end, so that the blocking plate and the sealing gasket can seal the flow channel and prevent water from flowing back. By providing the water collecting plate and the guide plate instead of the traditional spring elastic reset force, the utility model reduces the water flow pressure required for the valve to be opened, and can make the water flow more comfortable. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.
[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0016] Figure 2 This utility model Figure 1 Schematic diagram of the half-section structure.
[0017] In the figure: 1. valve body; 2. channel; 3. valve core; 4. through hole; 5. flow channel; 6. connecting shaft; 7. water collecting plate; 8. sealing plate; 9. first threaded part; 10. guide plate; 11. sealing gasket; 12. water inlet end; 13. water outlet end; 14. flange. DETAILED DESCRIPTION
[0018] The following is a further detailed description of the technical solution of the present invention through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of the present invention is not limited to the following embodiments, and any form of modification and / or change made to the present invention will fall within the scope of protection of the present invention.
[0019] In this utility model, unless otherwise specified, all parts and percentages are by weight. The equipment and raw materials used are commercially available or commonly used in the art. The methods in the following embodiments, unless otherwise specified, are conventional methods in the art. The components or equipment in the following embodiments, unless otherwise specified, are all common standard parts or components known to those skilled in the art. Their structures and principles are known to those skilled in the art through technical manuals or routine experimental methods.
[0020] The following detailed description of the embodiments of the present invention is made in conjunction with the accompanying drawings. In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present invention. However, one or more embodiments can also be implemented by those skilled in the art without these specific details.
[0021] like Figure 1-Figure 2 As shown, a check valve is characterized in that: it includes a valve body 1, a channel 2 is provided inside the valve body 1, a valve core 3 is provided in the center of the channel 2, a through hole 4 is provided in the center of the valve core 3, a plurality of flow channels 5 are provided around the through hole 4 on the valve core 3, a connecting shaft 6 is slidably provided in the through hole 4, both ends of the connecting shaft 6 extend out of the through hole 4, a trumpet-shaped water collecting plate 7 is provided at the left end of the connecting shaft 6, a sealing plate 8 is provided on the right side of the water collecting plate 7 on the connecting shaft 6, the sealing plate 8 and the water collecting plate 7 are located at the left end of the valve core 3, a first threaded portion 9 is provided on the outer wall of the right end of the connecting shaft 6 near the end position, a trumpet-shaped guide plate 10 is threadedly connected to the first threaded portion 9, the water collecting plate 7 and the guide plate 10 are oriented in the same direction, and the diameter of the guide plate 10 is smaller than the diameter of the inscribed circle of the plurality of flow channels 5.
[0022] In the above technical solution, when water is entering, the water flows directly through the flow channel 5 and impacts the sealing ring. Under the pressure of the water flow, the blocking plate 8 and the sealing ring move toward the water outlet end 13 under the action of the water pressure. At this time, the connecting shaft 6 moves inwardly within the through hole 4, and the blocking plate 8 and the sealing ring lose the ability to block the flow channel 5 and conduct the valve body 1. When water is stopped, the water at the water inlet end 12 flows back to the water inlet end, and the water at the water outlet end 13 flows back to the water inlet end 12. After the water flows through the concave surface of the guide plate 10 and the water collecting plate 7, and the pressure at the water inlet end 12 disappears, a negative pressure is formed, which drives the connecting shaft 6, the blocking plate 8, the guide plate 10 and the water collecting plate 7 toward the water inlet end 12, so that the blocking plate 8 and the sealing gasket 11 can seal the flow channel 5 and prevent water from flowing back. By providing the water collecting plate 7 and the guide plate 10 instead of the traditional spring elastic reset force, the utility model reduces the water pressure required for the valve to conduct, which can make the water flow more comfortable.
[0023] In the present utility model, in order to ensure that the sealing plate 8 does not affect the flow of water when the valve body 1 is normally conducting, the diameter of the sealing plate 8 is smaller than the diameter of the channel 2. In order to more conveniently seal the flow channel 5, the diameter of the sealing plate 8 is larger than the diameter of the circumscribed circle of several of the flow channels 5. The sealing plate 8 is provided with a sealing gasket 11 at the end away from the water collecting plate 7, and the sealing gasket 11 is sleeved on the connecting shaft 6.
[0024] In the present invention, the diameter of the water collecting plate 7 is smaller than the diameter of the channel 2, and the outer wall of the connecting shaft 6 is a smooth surface. The smoothness of the outer wall of the connecting shaft 6 can reduce the friction between the connecting shaft 6 and the through hole 4, and can reduce the pressure required for the valve body 1 to be conducted.
[0025] In the present invention, the tip ends of the water collecting plate 7 and the guide plate 10 are the water inlet end 12 of the valve body 1 , and the concave ends of the water collecting plate 7 and the guide plate 10 are the water outlet end 13 of the valve body 1 .
[0026] In the present invention, both ends of the valve body 1 are provided with flanges 14 for connecting to pipelines. By providing the flanges 14 , the valve and the pipeline can be flange-connected.
[0027] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.
Claims
1. A check valve, characterized in that: The invention comprises a valve body (1), wherein a channel (2) is provided inside the valve body (1), a valve core (3) is provided in the center of the channel (2), a through hole (4) is provided in the center of the valve core (3), a plurality of flow channels (5) are provided around the through hole (4) on the valve core (3), a connecting shaft (6) is provided in a sliding manner inside the through hole (4), both ends of the connecting shaft (6) extend out of the through hole (4), a trumpet-shaped water collecting plate (7) is provided at the left end of the connecting shaft (6), a blocking plate (8) is provided on the right side of the water collecting plate (7) on the connecting shaft (6), the blocking plate (8) and the water collecting plate (7) are located at the left end of the valve core (3), a first threaded portion (9) is provided on the outer wall of the right end of the connecting shaft (6) near the end position, and a trumpet-shaped guide plate (10) is threadedly connected to the first threaded portion (9).
2. A check valve according to claim 1, characterized in that: The diameter of the blocking plate (8) is smaller than the diameter of the channel (2), and the diameter of the blocking plate (8) is larger than the diameter of the circumscribed circle of the plurality of flow channels (5). A sealing gasket (11) is provided at one end of the blocking plate (8) away from the water collecting plate (7), and the sealing gasket (11) is sleeved on the connecting shaft (6).
3. A check valve according to claim 1, characterized in that: The water collecting plate (7) and the guide plate (10) are oriented in the same direction, and the diameter of the guide plate (10) is smaller than the diameter of the inscribed circle of the plurality of flow channels (5).
4. A check valve according to claim 3, characterized in that: The diameter of the water collecting plate (7) is smaller than the diameter of the channel (2), and the outer wall of the connecting shaft (6) is a smooth surface.
5. A check valve according to claim 4, characterized in that: The tip ends of the water collecting plate (7) and the guide plate (10) are directed to the water inlet end (12) of the valve body (1), and the concave ends of the water collecting plate (7) and the guide plate (10) are directed to the water outlet end (13) of the valve body (1).
6. A check valve according to claim 5, characterized in that: Both ends of the valve body (1) are provided with flanges (14) for connecting to pipelines.