One-way valve with opening pressure

Abstract

The utility model discloses a one-way valve with opening pressure. According to the technical scheme, the valve comprises an upper shell, a lower shell and a valve element, the upper shell and the lower shell are combined to form a cavity, the valve element is arranged in the cavity, the upper shell is provided with an inlet hole, the inlet hole is connected with the cavity, the lower shell is provided with an outlet hole, the outlet hole is connected with the cavity, the valve element comprises a valve rod, a deformation part and a sealing part, and the deformation part is connected with the sealing part. The valve rod is provided with a deformation part, the deformation part can deform, the deformation part is connected with the sealing part and the valve rod, the sealing part faces the upper shell and abuts against the upper shell, the valve element is provided with a water guide column, the water guide column protrudes towards the inlet hole, and the water guide column and the inlet hole are coaxial. And the water guide column is arranged on the valve element, so that a medium flowing in from the inlet hole can be uniformly diffused all around, the valve element is prevented from deviating, the opening stability of the valve element is improved, and the service life of the valve element is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of control valve technology, and more specifically to a one-way valve with opening pressure. Background Technology

[0002] A check valve is a valve that allows fluid to flow only through the inlet, but prevents the medium from flowing back through the outlet. Whether a check valve allows unidirectional flow is controlled by the valve core.

[0003] Existing check valves use spring-controlled valve cores, which have low sealing strength, low initial conduction pressure, and the possibility of leakage when shut-off is required. They cannot effectively maintain the overall performance of the product, and springs are not suitable for all media, which is a defect. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a one-way valve with opening pressure to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a one-way valve with opening pressure, comprising an upper shell, a lower shell, and a valve core. The upper shell and the lower shell are combined to form a cavity, and the valve core is located within the cavity. The upper shell has an inlet hole connected to the cavity, and the lower shell has an outlet hole connected to the cavity. The valve core includes a valve stem, a deformable part, and a sealing part. The deformable part is deformable and connects the sealing part to the valve stem. The sealing part faces the upper shell and abuts against it. A water guide column is provided on the valve core, protruding towards the inlet hole, and the water guide column is coaxial with the inlet hole.

[0006] As a further improvement of this utility model, a flow velocity step is provided at the end of the inlet facing the valve core.

[0007] As a further improvement of this utility model, a support platform is provided on the lower housing, the support platform protrudes to one side of the upper housing, the position of the support platform matches the position of the sealing part, there are several support platforms, and a through groove is formed between adjacent support platforms.

[0008] As a further improvement of this utility model, the lower housing is provided with a slot, and the upper housing is provided with a retaining ring, the retaining ring being embedded in the slot.

[0009] As a further improvement of this utility model, the inner side of the card slot is provided with an inclined guide edge.

[0010] As a further improvement of this utility model, the lower housing is provided with a mounting part, which includes a positioning rod and a mounting platform. The positioning rod is circumferentially distributed along the axis of the outlet hole, and the mounting platform is located inside the positioning rod and is integrally formed with the positioning rod. There is a gap between the mounting platform and the bottom surface of the lower housing.

[0011] As a further improvement of this utility model, the lower housing is provided with an outlet step between adjacent positioning rods.

[0012] As a further improvement of this utility model, the valve core is a rubber part or other elastic part.

[0013] As a further improvement of this utility model, the upper shell and the lower shell are fixedly connected by welding.

[0014] As a further improvement of this utility model, the valve stem, the deformable part, the sealing part and the water guide column are integrally formed.

[0015] The beneficial effects of this utility model are that it improves the product's anti-leakage performance, allows for customization of the opening pressure, and provides a water guide column in the valve core so that the medium flowing in from the inlet can diffuse evenly in all directions, preventing the valve core from shifting, improving the stability of valve core opening, and extending the service life of the valve core. Attached Figure Description

[0016] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the lower shell;

[0018] Figure 3 This is a three-dimensional structural diagram of the valve core.

[0019] Markings: 1. Upper housing; 11. Manhole; 12. Flow velocity step; 2. Lower housing; 21. Outlet; 3. Valve core; 31. Valve stem; 311. Valve core module; 312. Check ring; 32. Deformation part; 33. Sealing part; 34. Water guide column; 4. Cavity; 5. Support platform; 52. Through groove; 6. Slot; 61. Inlet edge; 7. Mounting part; 71. Positioning rod; 72. Mounting platform; 73. Gap; 74. Outlet step. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0021] Reference Figure 1 — Figure 3As shown, a one-way valve with opening pressure in this embodiment includes an upper housing 1, a lower housing 2, and a valve core 3. The upper housing 1 and the lower housing 2 are combined to form a cavity 4. The valve core 3 is located inside the cavity 4. The upper housing 1 has an inlet 11 connected to the cavity 4. The lower housing 2 has an outlet 21 connected to the cavity 4. The valve core 3 includes a valve stem 31, a deformation part 32, and a sealing part 33. The deformation part 32 is deformable and connects the sealing part 33 and the valve stem 31. The sealing part 33 faces the upper housing 1 and abuts against the upper housing 1. A water guide column 34 is provided on the valve core 3. The water guide column 34 protrudes towards the inlet 11 and is coaxial with the inlet 11.

[0022] Through the above technical solution, the core cap of the valve core 3 is designed as an inverted umbrella skirt shape, specifically divided into an upwardly inclined deformation part 32 and a top sealing part 33. The sealing part 33 fits tightly with the upper housing 1 to ensure a seal. When pressure is applied from the upper housing 1 to the lower housing 2, the pressure needs to be high enough to press the deformation part 32 downward so that the sealing part 33 is away from the sealing surface of the upper housing 1 in order to truly open the one-way valve. The valve core 3 is made of elastic material, and the deformation part 32 can deform and return to its original position. When the one-way valve opens, the deformation part 32 can be squeezed away from the upper housing 1 by the pressure, and it can also return to its original position after the pressure is released. This ensures that the valve will only open within a certain pressure range, avoiding leakage. When pressure is applied from the lower housing 2 to the upper housing 1, the contact between the sealing part 33 and the sealing surface of the upper housing 1 will be tighter, achieving a reverse sealing effect. Furthermore, a water guide column 34 is provided in the valve core 3 so that the medium flowing in from the inlet 11 can spread evenly to the surrounding area, preventing the valve core 3 from shifting, improving the stability of the valve core 3 opening, extending the service life of the valve core 3, and thus extending the service life of the check valve.

[0023] Specifically, the connection between the upper shell 1 and the lower shell 2 is pagoda-shaped.

[0024] Specifically, the connection between the upper shell 1 and the lower shell 2 is cylindrical.

[0025] Specifically, the valve stem 31 has a valve core module number 311 engraved on its end. Different valve core module numbers 311 correspond to different opening pressure ranges, which facilitates assembly and use.

[0026] Specifically, a check ring 312 is provided at the end of the valve stem 31. When the one-way valve is opened, it is deformed by pressure, and when it is closed, it rebounds to prevent backflow.

[0027] As one specific embodiment of the improvement, the end of the inlet 11 facing the valve core 3 is provided with a flow velocity step 12.

[0028] Through the above technical solution, the velocity step 12 increases the flow area of ​​the medium and increases the flow velocity of the medium when it flows in.

[0029] As an improved specific implementation, the lower housing 2 is provided with a support platform 5, the support platform 5 protrudes to the side of the upper housing 1, the position of the support platform 5 matches the position of the sealing part 33, there are a plurality of support platforms 5, and a through groove 52 is formed between adjacent support platforms 5.

[0030] Through the above technical solution, when the valve core 3 opens and the deformation part 32 deforms to its maximum position, the sealing part 33 is abutted by the support platform 5, preventing further deformation of the valve core 3, controlling the deformation amplitude of the deformation part 32 within a certain range, reducing deformation attenuation, and extending the service life of the valve core 3. After the medium passes between the upper housing 1 and the sealing part 33 and enters the cavity 4, it passes through the through groove 52 and then exits from the outlet 21.

[0031] Specifically, the support platform 5 is provided with reinforcing ribs extending inward, and the surface of the reinforcing ribs is inclined to improve structural strength and reduce flow resistance.

[0032] As an improved specific implementation, the lower housing 2 is provided with a slot 6, and the upper housing 1 is provided with a retaining ring, which is embedded in the slot 6.

[0033] With the above technical solution, after the retaining ring is inserted into the retaining groove 6, welding can be performed at the bottom, side and other positions of the retaining ring to improve the structural strength and sealing effect after the upper shell 1 and the lower shell 2 are connected.

[0034] As an improved specific implementation, the inner side of the card slot 6 is provided with an inclined guide edge 61.

[0035] The above technical solution guides the insertion of the retaining ring into the retaining groove 6, making it easier for the retaining ring to be inserted into the retaining groove 6 and facilitating assembly.

[0036] As an improved specific embodiment, the lower housing 2 is provided with a mounting part 7, which includes a positioning rod 71 and a mounting platform 72. The positioning rod 71 is circumferentially distributed along the axis of the outlet hole 21, and the mounting platform 72 is located inside the positioning rod 71 and is integrally formed with the positioning rod 71. There is a gap 73 between the mounting platform 72 and the bottom surface of the lower housing 2.

[0037] With the above technical solution, when the valve core 3 is installed on the mounting part 7, the valve stem 31 is located in a plurality of positioning rods 71 ​​and abuts against the mounting platform 72. The medium passing through the groove 52 passes through the gap 73 and then leaves from the outlet hole 21.

[0038] Specifically, several positioning rods 71 ​​are arranged circumferentially to stabilize the position of the valve stem 31.

[0039] As an improved specific implementation, the lower housing 2 is provided with an outlet step 74 between adjacent positioning rods 71.

[0040] Through the above technical solution, the step 74 further increases the medium's flow area, increases the flow rate of the medium when it flows out, and avoids the accumulation of foreign objects, prevents the one-way valve from clogging, and improves the stability during use.

[0041] As one specific embodiment of the improvement, the valve core 3 is a rubber part or other elastic part.

[0042] Through the above technical solution, the valve core 3 is a rubber part or other elastic part to meet the sealing and deformation requirements.

[0043] As one specific embodiment of the improvement, the upper housing 1 and the lower housing 2 are fixedly connected by welding.

[0044] Through the above technical solution, the upper shell 1 and the lower shell 2 are fixedly connected by ultrasonic welding, and the connection has good sealing performance.

[0045] As one specific embodiment of the improvement, the valve stem 31, the deformation part 32, the sealing part 33 and the water guide column 34 are integrally formed.

[0046] Through the above technical solution, the valve stem 31, the deformation part 32, the sealing part 33 and the water guide column 34 are integrally formed, resulting in high structural strength, high stability and long service life.

[0047] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A one-way valve with opening pressure, comprising an upper housing (1), a lower housing (2), and a valve core (3), wherein the upper housing (1) and the lower housing (2) are combined to form a cavity (4), the valve core (3) is located within the cavity (4), the upper housing (1) has an inlet (11) connected to the cavity (4), and the lower housing (2) has an outlet (21) connected to the cavity (4), characterized in that: The valve core (3) includes a valve stem (31), a deformation part (32) and a sealing part (33). The deformation part (32) is deformable and connects the sealing part (33) and the valve stem (31). The sealing part (33) faces the upper housing (1) and abuts against the upper housing (1). The valve core (3) is provided with a water guide column (34). The water guide column (34) protrudes towards the inlet hole (11) and is coaxial with the inlet hole (11).

2. The pressure-opening unidirectional valve of claim 1, wherein: The inlet (11) has a flow velocity step (12) at the end facing the valve core (3).

3. The pressure-opening unidirectional valve of claim 1, wherein: The lower housing (2) is provided with a support platform (5), which protrudes from the upper housing (1) and the position of the support platform (5) matches the position of the sealing part (33). There are several support platforms (5), and a through groove (52) is formed between adjacent support platforms (5).

4. The pressure-opening unidirectional valve of claim 1, wherein: The lower housing (2) is provided with a slot (6), and the upper housing (1) is provided with a retaining ring, which is embedded in the slot (6).

5. The pressure-opening unidirectional valve of claim 4, wherein: The inner side of the card slot (6) is provided with an inclined guide edge (61).

6. The pressure-opening unidirectional valve of claim 1, wherein: The lower housing (2) is provided with a mounting part (7), which includes a positioning rod (71) and a mounting platform (72). The positioning rod (71) is circumferentially distributed along the axis of the outlet hole (21). The mounting platform (72) is located inside the positioning rod (71) and is integrally formed with the positioning rod (71). There is a gap (73) between the mounting platform (72) and the bottom surface of the lower housing (2).

7. The check valve with opening pressure according to claim 6, characterized in that: The lower housing (2) has an exit step (74) between adjacent positioning rods (71).

8. The pressure-opening unidirectional valve of claim 1, wherein: The valve core (3) is a rubber part or other elastic part.

9. The pressure-opening unidirectional valve of claim 1, wherein: The upper shell (1) and the lower shell (2) are fixedly connected by welding.

10. The pressure-opening unidirectional valve of claim 1, wherein: The valve stem (31), the deformation part (32), the sealing part (33), and the water guide column (34) are integrally formed.

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