One-way valve

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a one-way valve which comprises a valve body and a valve core, the valve core comprises a valve seat, a valve seat core, a diaphragm and a magnetic steel body which are mutually matched and installed together, the valve seat is connected with the valve body, a sealing ring is arranged between the valve body and the valve seat, and the diaphragm is arranged in the valve body. The one-way valve has the advantages that the sealing performance of connection between the valve seat and the valve body is guaranteed, the selectable range of materials of the valve seat is enlarged, and the production cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, and in particular relates to a one-way valve. Background Art

[0002] In the prior art, such as the diaphragm one-way valve with publication number CN219809455U, it includes a valve body; and a valve core, wherein the valve core includes a valve seat, a valve seat core, a diaphragm, and a magnetic steel installed together in a cooperative manner, and the valve seat is cooperatively connected to the valve body. Since the one-way valve is used in a refrigeration system, in order to facilitate welding connection with the pipeline of the refrigeration system, the valve body is made of a copper tube, such as a TP2Y2 copper tube. At the same time, when the one-way valve is specifically designed and manufactured, in order to ensure that the reverse closing internal leakage is minimized, the valve body and the valve seat are welded and sealed with tin solder at the joint. In order to facilitate soldering between the valve body and the valve seat and ensure quality, the valve seat material must be made of brass. Since the valve seat occupies a large volume in the one-way valve and the brass material is of high value, the overall cost of the one-way valve remains high.

[0003] The above-mentioned prior art solutions have the following defects: since the valve body and the valve seat need to be sealed by welding with tin solder, the valve seat needs to be made of brass, resulting in a high manufacturing cost of the one-way valve. Utility Model Content

[0004] The utility model aims to provide a one-way valve to solve the technical problem that the sealing between the valve body and the valve seat needs to be completed by welding with tin solder, which leads to high costs, so as to achieve the purpose of changing the connection mode between the valve body and the valve seat and thus reducing costs.

[0005] In order to solve the above technical problems, the utility model provides a one-way valve, which includes a valve body and a valve core, wherein the valve core includes a valve seat, a valve seat core, a diaphragm and a magnetic steel body that are installed together in a cooperative manner, the valve seat is connected to the valve body, and a sealing ring is provided between the valve body and the valve seat.

[0006] Furthermore, the outer cylindrical surface of the valve seat is provided with a first mounting groove for mounting a sealing ring.

[0007] Furthermore, the sealing ring is a refrigerant-resistant rubber O-ring.

[0008] Furthermore, the sealing ring is made of polytetrafluoroethylene.

[0009] Furthermore, the valve seat is made of aluminum alloy material.

[0010] Furthermore, the valve seat is made of stainless steel.

[0011] Furthermore, there is a clearance fit between the valve body and the valve seat.

[0012] Furthermore, a filter screen is provided at the inlet end of the valve body.

[0013] Furthermore, the valve seat core has a through hole used as a passage hole, a rectangular magnetic steel body is installed in the through hole, and the diameter of the through hole matches the length of the magnetic steel body.

[0014] Furthermore, the magnetic steel body, the diaphragm and the outlet sealing surface of the through hole form a pair of sealing pairs that can be releasably engaged or disengaged.

[0015] Furthermore, the diaphragm is a circular thin sheet structure, and the surface of the diaphragm includes a coating disposed thereon.

[0016] The beneficial effects of the utility model are:

[0017] 1. After assembling the valve core and the sealing ring, press-fitting them with the valve body can prevent leakage between the valve body and the valve seat. Therefore, the complicated high-frequency soldering after assembling the valve body and the valve seat can be omitted, and the valve seat does not need to be made of brass. It can be replaced by cheap, light-weight, and easy-to-process aluminum alloy materials, or cheap, light-weight stainless steel materials.

[0018] 2. It can also save the subsequent cleaning due to the soldering process, improve assembly efficiency, improve assembly qualification rate, reduce the direct material cost of parts and components, and lower the overall cost.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of a preferred embodiment of a one-way valve of the utility model;

[0022] Figure 2 It is a structural schematic diagram of a valve seat core of a preferred embodiment of a one-way valve of the utility model;

[0023] Figure 3 It is a structural schematic diagram of a valve seat of a preferred embodiment of a one-way valve of the utility model;

[0024] Figure 4 It is a cross-sectional view of a valve seat of a preferred embodiment of a one-way valve of the utility model;

[0025] Figure 5 This is a structural schematic diagram of a one-way valve of the utility model in which a sealing ring is arranged on the valve seat in the best embodiment;

[0026] Figure 6 It is a schematic diagram of the forward flow of fluid inside the valve body of the utility model;

[0027] Figure 7 It is a schematic diagram of the reverse flow of fluid inside the valve body of the utility model.

[0028] In the figure:

[0029] 1. Valve body; 2. Valve core; 3. Valve seat; 4. Valve seat core; 5. Diaphragm; 6. Magnetic steel body; 7. Sealing ring; 8. First mounting groove; 9. Filter screen; 10. Through hole; 12. Second mounting groove; 13. Elastic clamping ring. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described 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.

[0031] Example:

[0032] like Figures 1 to 5 As shown, a one-way valve is easy to manufacture, simple to assemble, has good performance and low overall cost.

[0033] To achieve the above-mentioned purpose, the one-way valve of the utility model comprises a valve body 1 and a valve core 2, wherein the valve core 2 comprises a valve seat 3, a valve seat core 4, a diaphragm 5 and a magnetic steel body 6 which are installed together in a cooperative manner, the valve seat 3 is connected to the valve body 1, and a sealing ring 7 is provided between the valve body 1 and the valve seat 3.

[0034] Preferably, the sealing ring 7 is a refrigerant-resistant rubber O-ring.

[0035] Preferably, the outer cylindrical surface of the valve seat 3 is provided with a first mounting groove 8 for mounting the sealing ring 7 .

[0036] Optionally, the sealing ring 7 is made of polytetrafluoroethylene.

[0037] Preferably, the valve seat 3 is made of aluminum alloy.

[0038] Optionally, the valve seat 3 is made of stainless steel.

[0039] Preferably, the valve body 1 and the valve seat 3 are clearance-fitted.

[0040] Preferably, a filter screen 9 is further provided at the inlet end of the valve body 1 .

[0041] Preferably, the one-way valve, the magnetic steel body 6, the diaphragm 5 and the valve port on the valve port seat constitute a pair of sealing pairs that can be releasably engaged or disengaged.

[0042] Preferably, in the one-way valve described above, the diaphragm 5 is a circular thin sheet structure, and the surface of the diaphragm 5 includes a coating disposed thereon.

[0043] Preferably, a second mounting groove 12 is formed on the inner wall of the valve seat core 4 , and an elastic clamping ring 13 is detachably provided in the second mounting groove 12 , and the elastic clamping ring 13 fixes the magnetic steel body 6 to the inside of the valve seat core 4 .

[0044] Preferably, in the above-mentioned one-way valve, the matching surfaces of the valve seat 3 and the valve seat core 4 also include an adhesive thereon.

[0045] Preferably, in the one-way valve mentioned above, a filter screen 9 is further provided at the inlet end of the valve seat 3 .

[0046] Preferably, the valve seat core 4 has a through hole 10 used as a passage hole, and a rectangular magnetic steel body is installed in the through hole 10, and the diameter of the through hole 10 matches the length of the magnetic steel body.

[0047] Preferably, the magnetic steel body 6, the diaphragm 5 and the outlet sealing surface of the through hole 10 form a pair of sealing pairs that can be releasably engaged or disengaged.

[0048] Preferably, the diaphragm 5 is a circular thin sheet structure, and the surface of the diaphragm 5 includes a coating disposed thereon.

[0049] It should be noted that: Figure 6 As shown, there is magnetic force between the diaphragm 5 and the magnetic steel body 6. Under the action of the magnetic force, the diaphragm 5 fits with the port surface of the valve seat core 4. When the fluid flows from the A end to the B end inside the valve body 1, the pressure of the fluid acts on the diaphragm 5. At this time, the pressure of the fluid impacts the diaphragm 5 and forms a force toward the B end. Since the magnetic force is much smaller than the pressure of the fluid, the diaphragm 5 will be separated from the magnetic steel body 6 under the action of the fluid pressure, and slide along the inner wall of the guide hole of the diaphragm 5 to the inner end surface of the valve seat 3 close to the B end. At this time, the fluid can pass through the valve body 1 smoothly.

[0050] like Figure 7As shown, when the fluid flows from the B end to the A end inside the valve body 1, the pressure of the fluid acts on the diaphragm 5. At this time, the pressure of the fluid impacts the diaphragm 5 and forms a force toward the A end, pushing the diaphragm 5 to move toward the valve seat core 4. When the diaphragm 5 moves to be almost in contact with the port surface of the valve seat core 4, due to the magnetic force between the magnetic steel body 6 inside the valve seat core 4 and the diaphragm 5, the port surfaces of the diaphragm 5 and the valve seat core 4 are in contact and pressed against each other. The magnetic steel body 6, the diaphragm 5 and the port surface of the valve seat core 4 form a sealing pair under the action of the magnetic force and the pressure of the fluid, so that the fluid flowing through the one-way valve cannot flow in the reverse direction. Therefore, the one-way valve of the utility model can well realize the function of one-way flow of fluid.

[0051] The optimal embodiment of the one-way valve of the utility model with such a structure is that the valve core 2 and the sealing ring 7 are assembled and then press-fitted with the valve body 1, so that there is no leakage between the valve body 1 and the valve seat 3. Therefore, the complicated high-frequency soldering after the valve body 1 and the valve seat 3 are assembled can be omitted, and the subsequent cleaning due to the soldering process can also be omitted. The valve seat 3 does not need to be made of brass, and can be replaced by an aluminum alloy material that is cheap, light in specific gravity, and easy to process, or a stainless steel material that is cheap and light in specific gravity. Therefore, the assembly efficiency is improved, the assembly qualification rate is improved, the direct material cost of parts and components is reduced, and the overall cost is low.

[0052] The various devices selected in this application are all universal standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0053] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0055] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A one-way valve, comprising a valve body (1) and a valve core (2), wherein the valve core (2) comprises a valve seat (3), a valve seat core (4), a diaphragm (5) and a magnetic steel body (6) which are mounted together in a coordinated manner, and the valve seat (3) is connected to the valve body (1), characterized in that: A sealing ring (7) is provided between the valve body (1) and the valve seat (3).

2. A one-way valve according to claim 1, characterized in that: The outer cylindrical surface of the valve seat (3) is provided with a first mounting groove (8) for mounting a sealing ring (7).

3. A one-way valve according to claim 1, characterized in that: The sealing ring (7) is a refrigerant-resistant rubber O-ring.

4. A one-way valve according to claim 1, characterized in that: The sealing ring (7) is made of polytetrafluoroethylene.

5. A one-way valve as claimed in claim 1, characterized in that: The valve seat (3) is made of aluminum alloy material.

6. A one-way valve as claimed in claim 1, characterized in that: The valve seat (3) is made of stainless steel.

7. A one-way valve according to any one of claims 1 to 6, characterized in that: The valve body (1) and the valve seat (3) are clearance-fitted.

8. A one-way valve according to any one of claims 1 to 7, characterized in that: The inlet end of the valve body (1) is also provided with a filter screen (9).

9. A one-way valve as claimed in claim 8, characterized in that: The valve seat (3) core has a through hole (10) used as a passage hole, a rectangular magnetic steel body is installed in the through hole (10), and the diameter of the through hole matches the length of the magnetic steel body.

10. A one-way valve according to claim 9, characterized in that: The magnetic steel body (6), the diaphragm (5) and the outlet sealing surface of the through hole (10) form a pair of sealing pairs that can be releasably engaged or disengaged.

11. A one-way valve according to claim 10, characterized in that: The diaphragm (5) is a circular thin sheet structure, and the surface of the diaphragm (5) includes a coating arranged thereon.

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