One-way valve with high-strength structure

Abstract

The utility model provides a one-way valve with a high-strength structure, which comprises a valve seat provided with a central channel penetrating through the valve seat, and one end of the central channel is provided with a valve port; the valve sleeve is fixedly connected to the end of the valve seat, an inner cavity of the valve sleeve is communicated with a center channel of the valve seat, and the end face of the end, away from the valve seat, of the valve sleeve is a conical part protruding outwards. A valve core; the one-way valve bush is reasonable in design structure, on the basis of an existing one-way valve bush structure, the end face structure of the tail end of the valve bush is designed to be of the conical structure, on one hand, the overall structural strength of the valve bush can be effectively improved, and the problem of clamping stagnation in the using process due to large deformation generated when the valve bush is welded with other parts is solved; on the other hand, when the valve element makes contact with the conical part of the end face, the valve element can have the center self-adjusting process, the follow-up sealing effect of the valve element can be improved, and on the other hand, due to the conical part structure, fluid can have a better flowing track, and the flow loss is smaller.

Description

Technical Field

[0001] The utility model relates to the technical field of valve design, in particular to a one-way valve with a high-strength structure. Background Art

[0002] The air conditioning check valve is an important part of the air conditioning system. Its function is to control the flow direction of the refrigerant in the air conditioning system, that is, to make the refrigerant flow in only one direction along the pipeline without the occurrence of reflux valve components, so as to achieve the cooling or heating function of the air conditioning. Nowadays, with the development of industry, the types and functions of air conditioning check valves are increasing, such as Figure 6 What is shown is a schematic diagram of an air conditioning one-way valve in the prior art, wherein the internal valve core can move horizontally in the valve sleeve, and when it moves to the left extreme position shown in the figure, the valve core blocks the valve port, and when the valve core moves to the right direction, the valve is in an open state.

[0003] The defects of the above-mentioned one-way valve structure in actual use are as follows: since the right end face structure of the valve sleeve is a plane, when the valve is open, the valve core contacts the end face, and the valve sleeve cannot play a certain centering role on the valve core, so that the valve core will deviate from the center line of the valve sleeve under the action of its own gravity. When the valve is closed again, the closing effect will be poor; in addition, the fluid is discharged to the right side from the through hole at the end of the valve sleeve. Since the end face of the valve sleeve is a plane, the valve sleeve will be subjected to a large fluid force, and the problem of poor structural stability will occur in long-term use; and, this valve sleeve structure with a flat end face also has the problem of low structural strength in practice, and a large deformation will occur when welded to the valve seat, which makes its service life relatively short. Utility Model Content

[0004] The utility model proposes a one-way valve with a high-strength structure to solve the problems in the above-mentioned background technology that the valve sleeve structure inside the existing one-way valve has low strength, resulting in large welding deformation, unable to provide a better flow trajectory for the fluid, large flow loss, and unable to provide a self-centering function for the valve core.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A one-way valve with a high-strength structure, comprising:

[0007] A valve seat having a central passage extending therethrough and a valve port at one end of the central passage;

[0008] The valve sleeve is fixedly connected to the end of the valve seat, the inner cavity of which is connected to the central channel of the valve seat, and the end surface of which is away from the valve seat is a conical portion protruding outwards;

[0009] The valve core is coaxially and movably installed in the valve sleeve. In the valve open state, one end of the valve core can contact the inner wall of the tapered portion of the valve sleeve, so that the tapered portion can achieve a self-centering effect on the valve core.

[0010] Preferably, it also includes:

[0011] The valve body has a hollow structure inside, and the valve seat, valve sleeve and valve core are all arranged in the valve body, and the valve seat is fixedly connected to the valve body.

[0012] Preferably, a first through hole is formed at the center of the conical portion of the valve sleeve.

[0013] Preferably, a plurality of second through holes are formed in the circumferential direction of the valve sleeve.

[0014] Preferably, the plurality of second through holes are evenly distributed around the center of the valve sleeve.

[0015] Preferably, the valve core is a cup-shaped structure, the bottom of which is close to the valve port, and the outer wall includes a conical section close to the valve port and a cylindrical section connected to the conical section, wherein the end of the cylindrical section can contact the conical portion of the valve sleeve.

[0016] Preferably, the end of the valve body has a boss coaxial with its central channel, and the valve sleeve is fixedly connected to the boss.

[0017] By adopting the above technical solution, the beneficial effects of the utility model are as follows:

[0018] The utility model has a reasonable design structure. On the basis of the existing one-way valve sleeve structure, the terminal end face structure of the valve sleeve is designed to be a tapered structure. On the one hand, it can effectively increase the overall structural strength of the valve sleeve to prevent large deformation during welding with other parts and the problem of jamming during use. On the other hand, when the valve core contacts the tapered portion of the end face, the valve core can have a self-centering process, which can improve the subsequent sealing effect of the valve core. On the other hand, the tapered portion structure can also allow the fluid to have a better flow trajectory and less flow loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 This is a structural diagram of the utility model in the valve closing state;

[0021] Figure 2This is a structural diagram of the utility model in the valve-opening state;

[0022] Figure 3 It is a cross-sectional view of the valve sleeve of the utility model;

[0023] Figure 4 It is a three-dimensional diagram of the valve sleeve of the utility model;

[0024] Figure 5 It is a cross-sectional view of the valve core of the utility model;

[0025] Figure 6 It is a structural diagram of a one-way valve in the prior art.

[0026] in:

[0027] 1. Valve seat; 101. Valve port; 102. Boss; 2. Valve body; 3. Valve sleeve; 301. Conical portion; 302. First through hole; 303. Second through hole; 4. Valve core; 401. Cylindrical section; 402. Conical section. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0029] See also Figure 1-Figure 5 , a one-way valve with high strength structure, comprising:

[0030] The valve seat 1 has a central passage running through it, and one end of the central passage has a valve port 101;

[0031] The valve sleeve 3 is fixedly connected to the end of the valve seat 1, and its inner cavity is connected to the central channel of the valve seat 1, and its end face away from the valve seat 1 is a conical portion 301 protruding outward; wherein, the end of the valve body 2 has a boss 102 coaxial with its central channel, and the valve sleeve 3 is fixedly connected to the position of the boss 102. During manufacturing, the valve seat 1 is integrally turned and formed, so the center line of the boss 102, the central channel of the valve seat 1 and the outer wall of the valve seat 1 are all in a coaxial state. Therefore, after the valve sleeve 3 is installed on the valve seat 1, the valve sleeve 3 and the valve seat 1 can also be in a coaxial state, which has the advantage of high positioning accuracy. More specifically, the valve sleeve 3 is connected to the boss 102 by welding. Since a conical portion 301 is formed at the end of the valve sleeve 3 and due to the presence of the conical portion 301, the size of the first through hole 302 in the center thereof can be reduced compared with the prior art. Therefore, the valve sleeve 3 as a whole has better structural strength, thereby producing a smaller deformation during welding, so as to prevent the valve core 4 from getting stuck due to excessive deformation during subsequent use.

[0032] The valve core 4 is coaxially and movably installed in the valve sleeve 3. In the valve open state, one end of the valve core 4 can contact the inner wall of the tapered portion 301 of the valve sleeve 3, so that the tapered portion 301 can be used to self-adjust the center of the valve core 4; wherein the valve core 4 is a cup-shaped structure, the bottom of the cup is close to the valve port 101, and its outer wall includes a conical section 402 close to the valve port 101 and a cylindrical section 401 connected to the conical section 402, wherein the end of the cylindrical section 401 can contact the tapered portion 301 of the valve sleeve 3. With such an arrangement, the tail of the valve core 4 and the tapered portion 301 of the valve sleeve 3 can be structured in the valve open state, thereby reducing the contact surface between the two compared with the prior art, and at the same time, the two are fully contacted under the action of the fluid, thereby realizing the adjustment function of the center of the valve core 4, so that the valve core 4 and the valve sleeve 3 remain coaxial, and then in subsequent work, a tighter fit with the valve port 101 is achieved, thereby improving the sealing performance.

[0033] Specifically, it also includes: a valve body 2, which has a hollow structure inside. The valve seat 1, the valve sleeve 3 and the valve core 4 are all arranged in the valve body 2, and the valve seat 1 is fixedly connected to the valve body 2. The valve body 2 can be connected to an external air-conditioning pipeline.

[0034] Specifically, a first through hole 302 is provided at the center of the conical portion 301 of the valve sleeve 3. Since the first through hole 302 is provided at the center of the conical portion 301, when the fluid flows through the first through hole 302, it is affected by the structure of the conical portion 301 and has a better flow trajectory and less flow loss than the prior art.

[0035] Specifically, a plurality of second through holes 303 are opened in the circumferential direction of the valve sleeve 3, and the plurality of second through holes 303 are evenly distributed around the center of the valve sleeve 3. In this example, there are three second through holes 303, and different numbers can be set according to actual needs.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A one-way valve with a high-strength structure, characterized in that: include: A valve seat (1) having a central channel extending therethrough, and a valve port (101) at one end of the central channel; A valve sleeve (3) is fixedly connected to the end of the valve seat (1), an inner cavity of which is connected to the central channel of the valve seat (1), and an end surface of which, away from the valve seat (1), is a conical portion (301) protruding outwards; The valve core (4) is coaxially and movably mounted in the valve sleeve (3); in the valve open state, one end of the valve core (4) can contact the inner wall of the tapered portion (301) of the valve sleeve (3), thereby utilizing the tapered portion (301) to achieve a self-centering effect on the valve core (4).

2. A one-way valve with a high strength structure according to claim 1, characterized in that: Also includes: The valve body (2) has a hollow structure inside, and the valve seat (1), the valve sleeve (3) and the valve core (4) are all arranged inside the valve body (2), and the valve seat (1) is fixedly connected to the valve body (2).

3. A one-way valve with a high strength structure according to claim 1, characterized in that: A first through hole (302) is provided at the center of the tapered portion (301) of the valve sleeve (3).

4. A one-way valve with a high strength structure according to claim 1, characterized in that: The valve sleeve (3) is provided with a plurality of second through holes (303) in a circumferential direction.

5. A one-way valve with a high strength structure according to claim 4, characterized in that: A plurality of second through holes (303) are evenly distributed around the center of the valve sleeve (3).

6. A one-way valve with a high strength structure according to claim 1, characterized in that: The valve core (4) is in a cup-shaped structure, the bottom of which is close to the valve port (101), and the outer wall of which comprises a conical section (402) close to the valve port (101) and a cylindrical section (401) connected to the conical section (402), wherein the end of the cylindrical section (401) is capable of contacting the conical portion (301) of the valve sleeve (3).

7. A one-way valve with a high strength structure according to claim 2, characterized in that: The end of the valve body (2) is provided with a boss (102) coaxial with its central channel, and the valve sleeve (3) is fixedly connected to the boss (102).

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