Dual-seal axial-flow type check valve
By introducing a double sealing structure of the guide seat and return spring into the axial flow check valve, the problem of wear and water seepage of the valve disc is solved, and a stable double sealing effect is achieved, which improves sealing and durability.
Patent Information
- Application Number
- CN202422568745.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-24
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-10-24
AI Technical Summary
After long-term use of existing axial flow check valves, wear may occur at the connection between the valve disc and the fixed shaft, resulting in water seepage.
The double sealing structure is adopted to achieve sliding sealing of the valve disc through the return spring between the flow guide seat and the valve disc, preventing the valve disc from contacting directly with the inner wall of the valve body. The effect of the return spring makes the valve disc closely fit with the inner wall of the valve body when the water flow is over.
The double sealing effect at the end of the water flow is achieved, avoiding wear of the valve disc during movement, and improving sealing and durability.
Smart Images
Figure CN223137049U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of check valves, in particular to a double-sealed axial flow check valve. Background Art
[0002] An axial flow check valve, also known as a straight check valve or a single-piece lift check valve, is a valve device installed in a pipeline system, mainly used to prevent the reverse flow of the medium in the pipeline.
[0003] Compared with other types of check valves, the axial flow check valve adopts an axial flow shuttle structure, and generally has a fixed shaft, a spring and a valve flap arranged inside it. The valve flap is sleeved outside the fixed shaft and connected to the spring. When the fluid flows towards the valve flap, it pushes the valve flap to move relative to the fixed shaft and compresses the spring. When the water flow ends, the spring resets and pushes the valve flap to move relative to the fixed shaft again until the inside of the valve body is sealed. However, because the existing valve flap needs to slide relative to the fixed shaft, after long-term use, wear and water seepage may occur at the connection between the fixed shaft and the valve flap. Therefore, this application proposes a double-sealed axial flow check valve. Summary of the Utility Model
[0004] Aiming at the deficiencies of the prior art, the utility model provides a double-sealed axial flow check valve, which solves the problem that wear and water seepage may occur at the connection between the fixed shaft and the valve flap after long-term use because the existing valve flap needs to slide relative to the fixed shaft.
[0005] To achieve the above objectives, the utility model is realized through the following technical solutions: A double-sealed axial flow check valve includes a valve body, an installation seat is fixedly arranged inside the valve body, a flow guide seat and a valve flap are arranged outside the installation seat, the valve flap can slide relative to the flow guide seat, and a plurality of return springs are arranged between the valve flap and the flow guide seat, and the other side of the valve flap is in close contact with the inner wall of the valve body.
[0006] Preferably, an installation frame is fixedly connected to the inner wall of the valve body, and the installation seat is fixedly arranged on the installation frame.
[0007] Preferably, a connection seat is arranged above the installation seat, a fixed collar is fixedly installed outside the connection seat, and the top of the fixed collar is fixedly connected to the flow guide seat.
[0008] Preferably, a sliding collar is fixedly connected above the valve flap, and the sliding collar is movably sleeved outside the fixed collar.
[0009] Preferably, spring installation blocks are arranged between both ends of the return spring and the flow guide seat and the valve flap.
[0010] The utility model discloses a double-sealed axial check valve, and the beneficial effects thereof are as follows:
[0011] During the use of the double-sealed axial check valve, the flow guide seat and the valve flap are arranged outside the mounting seat, and the valve flap can slide relative to the flow guide seat. When the fluid moves towards the valve flap, it can push the valve flap to slide relative to the flow guide seat and compress a plurality of return springs arranged between the valve flap and the flow guide seat. When the water flow ends, under the action of the plurality of return springs, the valve flap slides relative to the flow guide seat again until the other side of the valve flap is closely attached to the inner wall of the valve body. At this time, both the outer ring and the inner ring of the valve flap can abut against the inner wall of the valve body, so that an effective double-sealing effect can be achieved, and at the same time, the sealing position of the valve flap will not be worn during the moving process.
[0012] During the movement of the valve flap of the double-sealed axial check valve, the sliding collar slides on the outside of the fixed collar, so that the valve flap can achieve a stable movement effect without contacting the internal parts of the valve body. Description of the Drawings
[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0014] Figure 1 It is a structural sectional view of the present invention;
[0015] Figure 2 It is a structural schematic diagram of the present invention.
[0016] In the figure: 1, valve body; 11, mounting frame; 2, mounting seat; 21, connecting seat; 3, flow guide seat; 31, fixed collar; 4, valve flap; 41, sliding collar; 5, return spring; 51, spring mounting block. Detailed Embodiment
[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.
[0018] In an embodiment of the present application, by providing a double-sealed axial check valve, the problem that the connection between the fixed shaft and the valve flap may be worn and water may leak after long-term use due to the need for the existing valve flap to slide relative to the fixed shaft is solved. When the water flow ends, under the action of a plurality of return springs 5, the valve flap 4 slides relative to the guide seat 3 again until the other side of the valve flap 4 is closely attached to the inner wall of the valve body 1. At this time, both the outer ring and the inner ring of the valve flap 4 can abut against the inner wall of the valve body 1, so that an effective double-sealing effect can be achieved, and at the same time, the sealing position of the valve flap 4 will not be worn during the movement process.
[0019] To better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the specification drawings and specific implementation manners.
[0020] An embodiment of the utility model discloses a double-sealed axial check valve.
[0021] According to the attached Figure 1-2 As shown, it includes a valve body 1. An installation seat 2 is fixedly arranged inside the valve body 1. A guide seat 3 and a valve flap 4 are arranged outside the installation seat 2. The valve flap 4 can slide relative to the guide seat 3, and a plurality of return springs 5 are arranged between the valve flap 4 and the guide seat 3. The other side of the valve flap 4 is closely attached to the inner wall of the valve body 1.
[0022] During the use process, the guide seat 3 and the valve flap 4 are arranged outside the installation seat 2, and the valve flap 4 can slide relative to the guide seat 3. When the fluid moves towards the valve flap 4, it can push the valve flap 4 to slide relative to the guide seat 3 and compress a plurality of return springs 5 arranged between the valve flap 4 and the guide seat 3. When the water flow ends, under the action of a plurality of return springs 5, the valve flap 4 slides relative to the guide seat 3 again until the other side of the valve flap 4 is closely attached to the inner wall of the valve body 1. At this time, both the outer ring and the inner ring of the valve flap 4 can abut against the inner wall of the valve body 1, so that an effective double-sealing effect can be achieved, and at the same time, the sealing position of the valve flap 4 will not be worn during the movement process.
[0023] Further, an installation frame 11 is fixedly connected to the inner wall of the valve body 1, and the installation seat 2 is fixedly arranged on the installation frame 11.
[0024] The arranged installation frame 11 can effectively support the installation seat 2.
[0025] Specifically disclosed, a connection seat 21 is arranged above the installation seat 2. A fixed collar 31 is fixedly installed on the outside of the connection seat 21, and the top of the fixed collar 31 is fixedly connected to the guide seat 3.
[0026] Further, a sliding collar 41 is fixedly connected above the valve flap 4, and the sliding collar 41 is movably sleeved on the outer side of the fixed collar 31.
[0027] During the movement of the valve flap 4, the sliding collar 41 slides on the outer side of the fixed collar 31, so that the valve flap 4 can achieve a stable movement effect without contacting the internal parts of the valve body 1.
[0028] Further, spring mounting blocks 51 are provided between both ends of the return spring 5 and the flow guide seat 3 and the valve flap 4.
[0029] By providing the spring mounting blocks 51, the return spring 5 can be effectively supported.
[0030] During use, the flow guide seat 3 and the valve flap 4 are arranged outside the mounting seat 2, and the valve flap 4 can slide relative to the flow guide seat 3. When the fluid moves towards the valve flap 4, it can push the valve flap 4 to slide relative to the flow guide seat 3 and compress a plurality of return springs 5 provided between the valve flap 4 and the flow guide seat 3. When the water flow ends, under the action of the plurality of return springs 5, the valve flap 4 slides relative to the flow guide seat 3 again until the other side of the valve flap 4 is closely attached to the inner wall of the valve body 1. At this time, both the outer ring and the inner ring of the valve flap 4 can abut against the inner wall of the valve body 1, so that an effective double sealing effect can be achieved, and at the same time, the sealing position of the valve flap 4 will not be worn during the movement process.
[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.
Claims
1. Double-sealed axial flow check valve, including valve body (1), characterized in that, An installation seat (2) is fixedly arranged inside the valve body (1). A flow guiding seat (3) and a valve flap (4) are arranged outside the installation seat (2). The valve flap (4) can slide relative to the flow guiding seat (3), and a plurality of return springs (5) are arranged between the valve flap (4) and the flow guiding seat (3). The other side of the valve flap (4) is in close fit with the inner wall of the valve body (1).
2. The double-sealed axial flow check valve according to claim 1, characterized in that, An installation frame (11) is fixedly connected to the inner wall of the valve body (1), and the installation seat (2) is fixedly arranged on the installation frame (11).
3. The double-sealed axial flow check valve according to claim 1, characterized in that, A connection seat (21) is arranged above the installation seat (2). A fixed collar (31) is fixedly installed on the outside of the connection seat (21), and the top of the fixed collar (31) is fixedly connected to the flow guiding seat (3).
4. The double-sealed axial flow check valve according to claim 3, wherein, A sliding collar (41) is fixedly connected above the valve flap (4), and the sliding collar (41) is movably sleeved on the outside of the fixed collar (31).
5. The double-sealed axial flow check valve according to claim 1, characterized in that, Spring installation blocks (51) are arranged at both ends of the return spring (5) between the flow guiding seat (3) and the valve flap (4).