A check valve

Abstract

The utility model provides a check valve belongs to valve technical field. It solved the traditional check valve, integral type structure needs integral dismounting cleaning or maintenance, the check of any internal spare part, cleaning or replacement, need to check valve body completely dismount from pipeline, cannot carry out the problem of on -line maintenance. This check valve, including upper valve body and lower valve body, upper valve body one end is provided with valve ring no. 1, and is located the valve groove of cross section L shape is seted up in upper valve body, lower valve body is located upper valve body one end and is provided with the valve ring no. 2 that cooperates with valve groove, the sealing ring that sets up between valve ring no. 1 and valve ring no. 2 has the sealing effect, sealing ring is fixed on the valve groove, and the sealing ring side wall sets up snap ring, is located the snap groove that sets up for snap ring insertion on the valve groove, sets up locking assembly for the fixed effect on valve ring no. 1 and valve ring no. 2. The utility model has the advantages of convenient to dismount.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, and specifically relates to a check valve. Background Technology

[0002] A check valve is a valve that automatically opens and closes its disc based on the flow of the medium itself to prevent backflow of the medium. It is also known as a non-return valve, one-way valve, backflow valve, and back pressure valve. Check valves are a type of automatic valve, and their main functions are to prevent backflow of the medium, prevent pump and drive motor reversal, and prevent the release of medium from containers.

[0003] Traditional check valves, with their integral structure, require complete disassembly for cleaning or repair. Any inspection, cleaning, or replacement of internal components necessitates the complete removal of the valve body from the pipeline, making online maintenance impossible. This is the key reason for their high maintenance costs and long downtime. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the prior art by providing a check valve that is easy to disassemble.

[0005] The objective of this utility model can be achieved through the following technical solution: A check valve, characterized in that it includes an upper valve body and a lower valve body. A valve ring is provided on one end of the upper valve body, and an L-shaped valve groove is formed on the upper valve body. A valve ring is provided on one end of the lower valve body, which cooperates with the valve groove. A sealing ring is provided between the valve ring and the valve ring, which is fixed to the valve groove. A retaining ring is formed on the side wall of the sealing ring, and a retaining groove is formed on the valve groove for the retaining ring to be inserted. Locking components for fixing are provided on the valve ring and the valve ring. The locking components include an upper locking ring, a lower locking ring, a bolt, and a fixing plate. One end of the upper and lower locking rings is connected by the fixing plate and the bolt. The other end of the upper and lower locking rings is symmetrically provided with openings, and a locking element for locking is installed in the openings.

[0006] In one of the aforementioned check valves, the locking element includes a cross bolt for connection with the opening and a knob mounted on top of the cross bolt.

[0007] In the aforementioned check valve, the upper valve body is provided with a water-passing plate with through holes, and the water-passing plate has water-passing holes for water flow.

[0008] In the aforementioned check valve, a T-shaped valve stem is provided in the lower valve body, and a valve disc is provided on the valve stem. A sealing ring for sealing is provided on the valve disc. The other end of the valve stem is installed in the through hole of the water-passing plate and extends outward. A return spring is sleeved on the valve stem.

[0009] Working principle: During installation and maintenance, first, snap the retaining ring of the sealing ring into the retaining groove of the upper valve body to pre-fix it. Then, align the second valve ring of the lower valve body with and close it onto the first valve ring of the upper valve body, pressing the sealing ring tightly into the L-shaped valve groove. Finally, close the upper and lower locking rings and quickly lock them by rotating the knob of the locking component to complete the assembly of the valve body. The disassembly process is the reverse and does not require disassembling the pipeline itself.

[0010] Compared with existing technologies, this check valve adopts a unique split design and quick-locking structure. During maintenance, there is no need to cut the entire valve off the pipeline. The valve body can be separated simply by loosening the locking component, and the internal valve disc, sealing ring and other parts can be directly inspected or replaced, making on-site disassembly and assembly operations simpler and more precise. Attached Figure Description

[0011] Figure 1 This is a 3D view of the check valve.

[0012] Figure 2 This is a cross-sectional view of the check valve.

[0013] Figure 3 This is a side view of the check valve.

[0014] In the diagram, 1. Upper valve body; 2. Lower valve body; 3. Valve ring one; 4. Valve groove; 5. Valve ring two; 6. Sealing ring; 7. Snap ring; 8. Snap groove; 9. Upper locking ring; 10. Lower locking ring; 11. Bolt; 12. Fixing plate; 13. Locking element; 14. Cross bolt; 15. Knob; 16. Water passage plate; 17. Water passage hole; 18. Valve stem; 19. Valve disc; 20. Sealing ring; 21. Return spring. Detailed Implementation

[0015] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0016] like Figure 1 , Figure 2 , Figure 3As shown, this check valve includes an upper valve body 1 and a lower valve body 2. A valve ring 3 is provided on one end of the upper valve body 1, and an L-shaped valve groove 4 is provided on the upper valve body 1. A valve ring 5 that cooperates with the valve groove 4 is provided on one end of the lower valve body 1. A sealing ring 6 that plays a sealing role is provided between the valve ring 3 and the valve ring 5. The sealing ring 6 is fixed on the valve groove 4. The valve ring 5 of the lower valve body 2 is aligned with the valve ring 3 of the upper valve body 1, and the two are axially closed. During this process, valve ring 2 5 gradually presses against the sealing ring 6 placed in the L-shaped valve groove 4 to form a reliable static seal. The sealing ring 6 has a retaining ring 7 on its side wall and a retaining groove 8 on the valve groove 4 for the retaining ring 7 to be inserted. The retaining ring 7 on the side wall of the sealing ring 6 is aligned and embedded into the retaining groove 8 on the valve ring 1 3 of the upper valve body 1 to complete the pre-fixing of the sealing ring 6. The valve ring 1 3 and valve ring 2 5 are provided with locking components for fixing. The locking components include an upper locking ring 9, a lower locking ring 10, a bolt 11, and a fixing plate 12. One end of the upper and lower locking rings 10 is connected by the fixing plate 12 and the bolt 11. The upper locking ring 9 and the lower locking ring 10 are locked to cover the outside of the closed valve ring 1 3 and valve ring 2 5. The other end of the upper and lower locking rings 10 is symmetrically provided with openings, and a locking element 13 for locking is installed in the openings.

[0017] To elaborate further, the locking element 13 includes a cross bolt 14 for connection with the opening and a knob 15 mounted on top of the cross bolt 14, which can be used to tighten and loosen the upper and lower locking rings 10 by rotating the knob 15.

[0018] To elaborate further, the upper valve body 1 is provided with a water-passing plate 16 with through holes, and the water-passing plate 16 has water-passing holes 17 for water to flow through.

[0019] To elaborate further, a T-shaped valve stem 18 is provided inside the lower valve body 2, and a valve disc 19 is provided on the valve stem 18. A sealing ring 20 is provided on the valve disc 19 to prevent water leakage when the valve disc 19 is not in operation. The other end of the valve stem 18 is installed in the through hole of the water passage plate 16 and extends outward. A return spring 21 is sleeved on the valve stem 18, and the return spring 21 provides a return force for the valve stem 18.

[0020] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0021] Although this document frequently uses terms such as upper valve body 1, lower valve body 2, valve ring one 3, valve groove 4, valve ring two 5, sealing ring 6, retaining ring 7, retaining groove 8, upper locking ring 9, lower locking ring 10, bolt 11, fixing plate 12, locking element 13, cross bolt 14, knob 15, water passage plate 16, water passage hole 17, valve stem 18, valve disc 19, sealing ring 20, and return spring 21, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A check valve, characterized in that, The valve includes an upper valve body (1) and a lower valve body (2). A valve ring (3) is provided at one end of the upper valve body (1), and an L-shaped valve groove (4) is formed on the upper valve body (1). A valve ring (5) that mates with the valve groove (4) is provided at one end of the lower valve body (2). A sealing ring (6) is provided between the valve ring (3) and the valve ring (5) to provide a seal. The sealing ring (6) is fixed to the valve groove (4), and a retaining ring (7) is formed on the side wall of the sealing ring (6). The valve groove (4) is provided with a slot (8) for inserting the retaining ring (7). The valve ring (3) and valve ring (5) are provided with locking components for fixing. The locking components include an upper locking ring (9), a lower locking ring (10), a bolt (11), and a fixing plate (12). One end of the upper and lower locking rings (9, 10) is connected by the fixing plate (12) and the bolt (11). The other end of the upper and lower locking rings (9, 10) is symmetrically provided with openings. Locking parts (13) for locking are installed in the openings.

2. A check valve according to claim 1, characterized in that, The locking element (13) includes a cross bolt (14) for connection with the opening and a knob (15) mounted on top of the cross bolt (14).

3. A check valve according to claim 1, characterized in that, The upper valve body (1) is provided with a water-passing plate (16) with through holes, and the water-passing plate (16) is provided with water-passing holes (17) for water to flow through.

4. A check valve according to claim 1, characterized in that, The lower valve body (2) is provided with a T-shaped valve stem (18), and a valve disc (19) is provided on the valve stem (18). A sealing ring (20) for sealing is provided on the valve disc (19). The other end of the valve stem (18) is installed in the through hole of the water plate (16) and extends outward. A return spring (21) is sleeved on the valve stem (18).

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