Magnetic stop check valve

Through the design of magnetic stop check valve, magnetic parts are used to replace traditional springs, which solves the problem of poor fatigue resistance and easy to get stuck by impurities, and achieves higher service life and control accuracy.

CN222255162UActive Publication Date: 2024-12-27NINGBO JIEKELONG PRECISION MFG
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Patent Information

Application Number
CN202323486172.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2023-12-20
Publication Date
2024-12-27
Estimated Expiration
2033-12-20

AI Technical Summary

Technical Problem

The spring resistance of existing shut-off valves has limited elastic fatigue resistance, low life, low control accuracy, and are easily stuck by particles and impurities in the pipeline, resulting in failure.

Method used

The magnetic stop check valve design is adopted, and magnetic parts are used to replace traditional springs. The valve sealing and control is achieved through the repulsion of magnetic parts, avoiding spring fatigue problems and improving control accuracy.

Benefits of technology

It extends the service life of the valve, improves control accuracy, and avoids failure problems caused by impurities stuck.

✦ Generated by Eureka AI based on patent content.

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    Figure CN222255162U_ABST
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Abstract

The utility model discloses a magnetic cut-off check valve which comprises a valve body, a valve core, a valve core, a valve core, a valve core, a valve core, a valve core and a valve core, and is characterized in that the valve body is provided with a flow channel; the first valve rod can move in the second direction perpendicular to the first plane; the lower end of the second valve rod is provided with a sealing part matched with the sealing seat, and the second valve rod can move in the second direction; wherein the first valve rod is provided with a first magnetic part, the second valve rod is provided with a second magnetic part, and the first magnetic part and the second magnetic part repel each other. According to the utility model, the spring of the prior art is embodied by adopting the magnetic piece, the fatigue performance of the spring does not need to be considered, the service life is longer, and the control precision is higher. Meanwhile, due to the design, the problem of failure caused by the fact that the spring is stuck and deflected due to particle impurities is solved.
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Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to a magnetic stop check valve. Background Art

[0002] The existing stop check valves in the industry generally have the functions of cutoff, check, and system flow balance, and they are mainly realized by a plugging component with a spring to achieve valve flow adjustment and cutoff. For example, Chinese patent CN202022747480.1 discloses a stop check valve, including a valve body, a valve stem, and a valve core, the valve body is provided with a water inlet and a water outlet, the valve body is provided with a valve seat between the water inlet and the water outlet, the valve seat is provided with a valve hole connecting the water inlet and the water outlet, the upper end of the valve body is fixedly connected with a valve bonnet, the valve stem is threadedly connected to the valve bonnet and can be lifted up and down, the upper end of the valve stem extends out of the valve bonnet and is fixedly connected with a handwheel, a guide hole is provided on the lower end surface of the valve stem, a protruding guide rod is provided at the center of the upper end surface of the valve core, the guide rod is inserted into the guide hole, a sealing gasket is fixed on the lower end of the valve core, a spring is connected between the valve core and the valve bonnet, and under the action of the spring, the lower end surface of the sealing gasket abuts against the valve seat to close the valve hole. A spring is connected between the valve core and the valve cap of this patent. Under the action of the spring, the lower end face of the sealing gasket presses against the valve seat to close the valve hole. However, there are problems such as limited elastic fatigue resistance of the spring, short service life and low control accuracy. At the same time, there are often various granular impurities in the pipeline, and the spring is easily stuck by the impurities and fails. Utility Model Content

[0003] In view of this, an object of the present invention is to provide a magnetic stop check valve.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A magnetic stop check valve, comprising:

[0006] A valve body, wherein the valve body has a flow channel, and the flow channel has a sealing seat arranged along a first plane;

[0007] a first valve stem, the first valve stem being movable in a second direction perpendicular to the first plane;

[0008] A second valve stem, wherein the lower end of the second valve stem is provided with a sealing portion matching the sealing seat, and the second valve stem is capable of moving along the second direction;

[0009] The first valve stem has a first magnetic component, the second valve stem has a second magnetic component, and the first magnetic component repels the second magnetic component.

[0010] The magnetic stop check valve, wherein the lower end of the first valve stem is provided with a second valve stem groove, and the second valve stem is arranged inside the second valve stem groove;

[0011] A first magnetic member groove is formed at the lower end of the first valve stem, and the first magnetic member is arranged in the first magnetic member groove;

[0012] A second magnetic member groove is formed at the upper end of the second valve stem, and the second magnetic member is disposed in the second magnetic member groove.

[0013] The above-mentioned magnetic stop check valve, wherein the first magnetic member groove is opened on the bottom surface of the second valve stem groove;

[0014] The first magnetic member is directly opposite to the second magnetic member.

[0015] The magnetic stop check valve, wherein the valve body has an inlet and an outlet, the sealing seat is arranged between the inlet and the outlet, and the sealing seat has a valve hole connecting the inlet and the outlet;

[0016] A valve cap is disposed above the sealing seat, an accommodating space is formed between the valve cap and the valve body, and a portion of the first valve stem and the second valve stem are both disposed inside the accommodating space;

[0017] Wherein, the first valve stem is threadedly connected to the valve cap.

[0018] The above-mentioned magnetic stop check valve, wherein the upper end of the first valve stem protrudes from the valve cap, the outer wall of the first valve stem is provided with one or more annular sealing grooves, and the annular sealing groove is provided with an O-ring forming a seal between the outer wall of the first valve stem and the inner wall of the valve cap.

[0019] The magnetic stop check valve, wherein the valve cap comprises a first portion located at the upper side and having a smaller inner diameter, and a second portion located at the lower side and having a larger inner diameter;

[0020] The inner diameter of the first part matches the outer diameter of the first valve stem, and the inner diameter of the second part is larger than the outer diameter of the first valve stem;

[0021] The outer surface of the first valve stem extends outward to form an annular boss portion, the boss portion is provided with an external thread, and the second portion of the valve cap is provided with an internal thread matching the external thread.

[0022] The magnetic stop check valve, wherein the inlet is arranged in a direction parallel to the first plane, the inlet has a curved portion, the axial direction of the end of the curved portion is arranged along the second direction, and the sealing seat is arranged at the end of the curved portion;

[0023] The outlet is arranged along a direction parallel to the first plane, the accommodating space is located at an upper portion of the sealing seat, and the accommodating space is communicated with the outlet.

[0024] In the above-mentioned magnetic stop check valve, a valve flap assembly is provided at the lower end of the second valve stem, and the outer edge of the lower surface provided by the valve flap assembly provides the sealing portion.

[0025] In the above-mentioned magnetic stop check valve, the first magnetic component and the second magnetic component are both magnets.

[0026] In the above-mentioned magnetic stop check valve, the magnetic poles of the first magnetic component and the second magnetic component on the side facing each other are the same.

[0027] Due to the adoption of the above technology, the utility model has the following positive effects compared with the prior art:

[0028] (1) The utility model adopts a magnetic bag to embody the existing spring technology, so there is no need to consider the fatigue performance of the spring, the service life is longer, and the control accuracy is higher. At the same time, the design of the utility model will not cause the spring to be stuck or deflected due to particulate impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the closed state of the magnetic stop check valve of the utility model.

[0030] Figure 2 It is a schematic diagram of the magnetic stop check valve of the utility model in an open state.

[0031] Figure 3 It is a schematic diagram of a first valve stem of the magnetic stop check valve of the utility model.

[0032] Figure 4 It is a schematic diagram of the second valve stem of the magnetic stop check valve of the utility model.

[0033] In the accompanying drawings: 1. valve body; 11. sealing seat; 12. inlet; 121. bending part; 13. outlet; 2. first valve stem; 21. second valve stem groove; 22. first magnetic part groove; 23. annular sealing groove; 24. boss part; 3. second valve stem; 31. second magnetic part groove; 32. valve disc assembly; 4. first magnetic part; 5. second magnetic part; 6. valve cap; 61. first part; 62. second part; 7. O-ring; 8. handwheel; 81. bolt; 82. nut; 83. nameplate. DETAILED DESCRIPTION

[0034] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0035] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “inside”, “outside”, “front”, “back”, “lateral” and “vertical” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention. They do not indicate or imply that the device or component referred to must have a specific direction and therefore should not be understood as a limitation on the present invention.

[0036] It should be specially explained that the terms “horizontal” and “vertical” in the present invention are used to illustrate a rough positional relationship, rather than a strict “horizontal plane” or “vertical plane”.

[0037] See also Figures 1 to 4 As shown, a magnetic stop check valve of a preferred embodiment is shown, comprising: a valve body 1, a first valve stem 2, and a second valve stem 3, wherein the valve body has a flow channel, the flow channel has a sealing seat 11 arranged along a first plane, the first valve stem 2 can move in a second direction perpendicular to the first plane, the lower end of the second valve stem 3 has a sealing portion matching the sealing seat 11, and the second valve stem 3 can move in the second direction, wherein the first valve stem 2 has a first magnetic component 4, the second valve stem 3 has a second magnetic component 5, and the first magnetic component 4 and the second magnetic component 5 repel each other.

[0038] Specifically, the first valve stem 2 is allowed to be moved relative to the valve body 1 along the second direction, i.e. Figure 1 , Figure 2 The valve body 1 can move in the vertical direction and can be temporarily fixed relative to the valve body 1.

[0039] Specifically, the sealing portion of the second valve stem 2 moves between the first valve stem 1 and the sealing seat 11 , and due to the repulsive force provided by the first valve stem 1 to the second valve stem 2 , the second valve stem 2 has a tendency to move toward the sealing seat 11 .

[0040] Specifically, when the fluid passes through the flow channel and the sealing seat 11, the sealing portion of the second valve stem 2 is lifted due to the fluid pressure, and the space between the first magnetic member 4 and the second magnetic member 5 is compressed.

[0041] Specifically, after the fluid passes through the sealing seat 11 , due to the repulsive force between the first magnetic member 4 and the second magnetic member 5 , the sealing portion of the second valve stem 2 is pressed against the sealing seat 11 to form a seal.

[0042] More specifically, since the sealing seat 11 is automatically sealed after the fluid passes through the sealing seat 11 , the fluid cannot return to the original path, thus achieving non-return.

[0043] Specifically, the end of the lower end of the first valve stem 1 can be operably pressed against the upper surface of the sealing portion. At this time, the lower surface of the sealing portion is subjected to direct contact and constant pressure provided by the first valve stem 1, and maintains a state of being in contact with the sealing seat 11 to achieve cutoff.

[0044] Further, as a preferred embodiment, a second valve stem groove 21 is formed at the lower end of the first valve stem 2 , and the second valve stem 3 is disposed inside the second valve stem groove 21 .

[0045] Further, as a preferred embodiment, a first magnetic member groove 22 is formed at the lower end of the first valve stem 2 , and the first magnetic member 4 is disposed in the first magnetic member groove 22 .

[0046] Furthermore, as a preferred embodiment, a second magnetic member groove 31 is formed at the upper end of the second valve stem 3 , and the second magnetic member 5 is disposed in the second magnetic member groove 31 .

[0047] Furthermore, as a preferred embodiment, the first magnetic member groove 22 is opened on the bottom surface of the second valve stem groove 21 .

[0048] Furthermore, as a preferred embodiment, the first magnetic member 4 is directly opposite to the second magnetic member 5 .

[0049] Further, as a preferred embodiment, the valve body 1 has an inlet 12 and an outlet 13 , the sealing seat 11 is disposed between the inlet 12 and the outlet 13 , and the sealing seat 11 has a valve hole communicating with the inlet 12 and the outlet 13 .

[0050] Further, as a preferred embodiment, a valve cap 6 is provided above the sealing seat 11, and an accommodating space is formed between the valve cap 6 and the valve body 1, and a part of the first valve stem 2 and the second valve stem 3 are both provided inside the accommodating space.

[0051] Preferably, a sealing ring is provided between the valve cap 6 and the valve body 1 .

[0052] Further, as a preferred embodiment, the first valve stem 2 is threadedly connected to the valve cap 6 .

[0053] Furthermore, as a preferred embodiment, the upper end of the first valve stem 2 protrudes from the valve cap 6, and the outer wall of the first valve stem 2 is provided with one or more annular sealing grooves 23, and the annular sealing groove 23 is provided with an O-ring 7 forming a seal between the outer wall of the first valve stem 2 and the inner wall of the valve cap 6.

[0054] Furthermore, as a preferred embodiment, the valve cap 6 includes a first portion 61 located at the upper side and having a smaller inner diameter, and a second portion 62 located at the lower side and having a larger inner diameter.

[0055] Further, as a preferred embodiment, the inner diameter of the first portion 61 matches the outer diameter of the first valve stem 2 , and the inner diameter of the second portion 62 is greater than the outer diameter of the first valve stem 2 .

[0056] Further, as a preferred embodiment, the outer surface of the first valve stem 2 extends outward to form an annular boss portion 24, the boss portion 24 is provided with an external thread, and the second portion 62 of the valve cap 6 is separately provided with an internal thread matching the external thread.

[0057] Specifically, the first valve stem 2 rotates relative to the valve cap 6. Figure 1 , Figure 2 Move in the vertical direction in order to limit the floating space of the second valve stem 3.

[0058] Specifically, the second valve stem 3 has a tendency to move toward the sealing seat 11 due to the repulsive force provided by the first valve stem 2 .

[0059] Further, as a preferred embodiment, the inlet 12 is arranged in a direction parallel to the first plane, the inlet 12 has a curved portion 121 , the axial direction of the end of the curved portion 121 is arranged along the second direction, and the sealing seat 11 is provided at the end of the curved portion 121 .

[0060] Further, as a preferred embodiment, the outlet 13 is arranged in a direction parallel to the first plane, the accommodating space is located at the upper part of the sealing seat 11 , and the accommodating space is communicated with the outlet 13 .

[0061] Further, as a preferred embodiment, a valve flap assembly 32 is provided at the lower end of the second valve stem 3, and the outer edge of the lower surface provided by the valve flap assembly 32 provides a sealing portion.

[0062] Specifically, the end of the lower end of the first valve stem 1 can be operably pressed against the upper surface of the valve flap assembly 32. In this case, the valve flap assembly 32 is tightly fitted with the sealing seat, and the entire valve body 1 remains in a closed state.

[0063] Furthermore, as a preferred embodiment, a hand wheel 8 is provided at the upper end of the first valve stem 2 .

[0064] Further, as a preferred embodiment, the upper end of the hand wheel 8 has a bolt 81 , and the bolt 81 is provided with a nut 82 matching the bolt 81 .

[0065] Furthermore, as a preferred embodiment, a nameplate 83 is provided between the nut 82 and the handwheel 8 .

[0066] Further, as a preferred embodiment, the first magnetic member 4 and the second magnetic member 5 are both magnets.

[0067] Furthermore, as a preferred embodiment, the first magnetic component 4 and the second magnetic component 5 have a plastic coating layer on their exteriors.

[0068] Furthermore, as a preferred embodiment, the magnetic poles of the first magnetic member 4 and the second magnetic member 5 on the sides facing each other are the same.

[0069] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A magnetic stop check valve, characterized in that: include: A valve body, wherein the valve body has a flow channel, and the flow channel has a sealing seat arranged along a first plane; a first valve stem, the first valve stem being movable in a second direction perpendicular to the first plane; A second valve stem, wherein the lower end of the second valve stem is provided with a sealing portion matching the sealing seat, and the second valve stem is capable of moving along the second direction; The first valve stem has a first magnetic component, the second valve stem has a second magnetic component, and the first magnetic component repels the second magnetic component.

2. The magnetic stop check valve according to claim 1, characterized in that: A second valve stem groove is formed at the lower end of the first valve stem, and the second valve stem is arranged inside the second valve stem groove; A first magnetic member groove is formed at the lower end of the first valve stem, and the first magnetic member is arranged in the first magnetic member groove; A second magnetic member groove is formed at the upper end of the second valve stem, and the second magnetic member is disposed in the second magnetic member groove.

3. The magnetic stop check valve according to claim 2, characterized in that: The first magnetic member groove is formed on the bottom surface of the second valve stem groove; The first magnetic member is directly opposite to the second magnetic member.

4. The magnetic stop check valve according to claim 1, characterized in that: The valve body has an inlet and an outlet, the sealing seat is arranged between the inlet and the outlet, and the sealing seat has a valve hole connecting the inlet and the outlet; A valve cap is disposed above the sealing seat, an accommodating space is formed between the valve cap and the valve body, and a portion of the first valve stem and the second valve stem are both disposed inside the accommodating space; Wherein, the first valve stem is threadedly connected to the valve cap.

5. The magnetic stop check valve according to claim 4, characterized in that: The upper end of the first valve stem protrudes from the valve cap, and the outer wall of the first valve stem is provided with one or more annular sealing grooves, in which an O-ring is provided to form a seal between the outer wall of the first valve stem and the inner wall of the valve cap.

6. The magnetic stop check valve according to claim 4, characterized in that: The valve cap comprises a first portion located at the upper side and having a smaller inner diameter, and a second portion located at the lower side and having a larger inner diameter; The inner diameter of the first part matches the outer diameter of the first valve stem, and the inner diameter of the second part is larger than the outer diameter of the first valve stem; The outer surface of the first valve stem extends outward to form an annular boss portion, the boss portion is provided with an external thread, and the second portion of the valve cap is provided with an internal thread matching the external thread.

7. The magnetic stop check valve according to claim 4, characterized in that: The inlet is arranged along a direction parallel to the first plane, the inlet has a curved portion, the axial direction of the end of the curved portion is arranged along the second direction, and the sealing seat is arranged at the end of the curved portion; The outlet is arranged along a direction parallel to the first plane, the accommodating space is located at an upper portion of the sealing seat, and the accommodating space is communicated with the outlet.

8. The magnetic stop check valve according to claim 1, characterized in that: A valve flap assembly is disposed at the lower end of the second valve stem, and the outer edge of the lower surface provided by the valve flap assembly provides the sealing portion.

9. The magnetic stop check valve according to claim 1, characterized in that: The first magnetic member and the second magnetic member are both magnets.

10. The magnetic stop check valve according to claim 9, characterized in that: The magnetic poles of the first magnetic member and the second magnetic member on the sides facing each other are the same.