Stainless steel one-way valve for air conditioner pipeline

Abstract

The utility model relates to the technical field of one-way valves, in particular to a stainless steel one-way valve for an air conditioner pipeline, which comprises a shell, a positioning piece fixedly connected inside the shell through deformation of the shell, a valve seat fixedly connected inside the shell, and a valve core slidably arranged inside the positioning piece and matched with the valve seat to seal the inside of the shell. The check valve has the advantages that the positioning piece is fixedly connected into the shell through deformation of the shell, the valve seat is fixedly connected into the shell, and the valve element is arranged in the positioning piece in a sliding mode; and the positioning piece is fixed in the shell through the deformation of the shell, so that the use of auxiliary mounting pieces is reduced, and the manufacturing cost and the assembly difficulty are reduced.

Description

Technical Field

[0001] This utility model relates to the field of one-way valve technology, specifically to a stainless steel one-way valve for air conditioning pipelines. Background Technology

[0002] In air conditioning systems, check valves are used to control the flow direction of refrigerant, prevent backflow, and ensure stable system operation. Currently, the stainless steel check valves commonly used in air conditioning piping typically employ a precision design, relying on auxiliary mounting components such as O-rings, gaskets, clamps, and locating pins to ensure sealing and valve core positioning. These valves offer high control precision and are suitable for industrial applications with stringent fluid control requirements; however, their complex structure leads to cumbersome assembly processes and increased production costs.

[0003] However, in typical air conditioning piping applications, the primary function of a check valve is to prevent backflow of the medium, and the requirement for control precision is relatively low. While existing complex check valve structures can meet functional requirements, their redundant design leads to material waste, low assembly efficiency, and may increase the risk of leakage due to the excessive number of components. Furthermore, excessive auxiliary installation parts (such as O-rings and gaskets) are prone to aging and wear after long-term use, affecting the reliability of the valve body and maintenance costs.

[0004] Therefore, there is an urgent need for a stainless steel check valve with a simplified structure and convenient installation, which can meet the basic functional requirements of air conditioning pipelines while reducing the use of auxiliary installation parts, thereby reducing manufacturing costs and assembly difficulty. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a stainless steel check valve for air conditioning pipelines, thus achieving the goal of solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a stainless steel one-way valve for air conditioning pipelines, comprising: a housing, a positioning member fixedly connected to the inside of the housing by deformation of the housing, a valve seat fixedly connected to the inside of the housing, and a valve core slidably disposed inside the positioning member, which cooperates with the valve seat to form a seal to the inside of the housing;

[0007] The positioning component is fixed inside the housing by the deformation of the housing itself, reducing the use of auxiliary mounting parts, thereby reducing manufacturing costs and assembly difficulty.

[0008] In order to achieve the purpose of sealing between the valve core and the valve seat, the valve core is a conical cover, and the valve seat has an integrally formed oblique protrusion; the valve core of the conical cover and the oblique protrusion on the valve seat cooperate to form a conical surface seal.

[0009] To improve the sliding stability of the valve core inside the positioning component, a guide post is fixedly connected inside the valve core, and the guide post is slidably disposed inside the positioning component; the valve core slides inside the positioning component through the guide post, thereby improving the sliding stability of the valve core.

[0010] Furthermore, a welding ring is fitted around the outside of the valve seat, and the valve seat is fixedly connected to the inside of the housing through the welding ring.

[0011] Furthermore: the outer shell is deformed to form an inwardly recessed protruding ring, and the positioning member is fixedly connected to the inside of the outer shell through the protruding ring.

[0012] Furthermore, the outer shell deformation forms a variable diameter portion for limiting the position of the positioning element and a mounting groove for installation.

[0013] The beneficial effects of this utility model embodiment are as follows:

[0014] The positioning element is fixedly connected to the inside of the housing by the deformation of the housing, the valve seat is fixedly connected to the inside of the housing, and the valve core is slidably disposed inside the positioning element; the positioning element is fixed inside the housing by the deformation of the housing itself, reducing the use of auxiliary installation parts, thereby reducing manufacturing costs and assembly difficulty. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is an exploded view of the structure of this utility model.

[0017] In the diagram: 1. Outer shell; 2. Positioning component; 3. Valve seat; 4. Valve core; 5. Slanted protrusion; 6. Guide post; 7. Welding ring; 8. Protruding ring; 9. Variable diameter section; 10. Mounting groove; 11. Spring. Detailed Implementation

[0018] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0019] See Figure 1-2 This utility model discloses a stainless steel one-way valve for air conditioning pipelines, including a housing 1, a positioning member 2 fixedly connected inside the housing 1, a valve core 4 slidably connected inside the positioning member 2, and the valve core 4 forming a seal with a fixed valve seat 3 inside the housing 1.

[0020] This application employs a one-way valve with a conical sealing structure, primarily composed of a conical valve core 4 and a valve seat 3 with an oblique protrusion 5. The oblique protrusion 5, integrally formed on the inner wall of the valve seat 3, cooperates with the conical valve core 4 to form a sealing surface. Its working principle is as follows: when the medium flows in from the outside of the conical valve core 4, the fluid pressure pushes the valve core 4 away from the valve seat 3, thus opening the valve; when the medium flows in the opposite direction, the fluid thrust and the pressure difference generated by the flow through the gap between the valve core 4 and the valve seat 3 work together to move the valve core 4 towards the valve seat 3, ultimately causing the conical valve core 4 to fit tightly against the oblique protrusion 5, forming a reliable conical seal. This structure automatically controls the valve opening and closing by changing the direction of medium flow, achieving excellent sealing performance while ensuring unidirectional flow.

[0021] See Figure 1 The positioning component 2 is fixed inside the housing 1 by forming an inwardly recessed protruding ring 8 through the deformation of the housing 1. That is, no auxiliary installation component is needed for the installation of the positioning component 2, which reduces the structural complexity and thus reduces the assembly difficulty.

[0022] See Figure 1 The outer casing 1 is deformed to form a diameter-changing portion 9 and a mounting groove 10. The diameter-changing portion 9 creates a diameter change, thereby restricting the positioning member 2. That is, when the positioning member 2 is placed inside the outer casing 1 for installation, its position is limited by the diameter-changing portion 9. Subsequently, the outer casing 1 can be compressed to form a protruding ring 8 to fix the positioning member 2. The mounting groove 10 on the outer casing 1 is used to connect the outer casing 1 to the air conditioning pipeline; that is, the valve body proposed in this application is fixed to the air conditioning pipeline through the mounting groove 10.

[0023] See Figure 1 The valve core 4 is fixedly connected to a guide post 6, which is slidably disposed inside the positioning member 2. The guide post 6 limits the sliding of the valve core 4 and improves the sliding stability of the valve core 4.

[0024] As an optional embodiment of this application:

[0025] A spring 11 is installed outside the guide post 6, so that the spring 11 is located between the positioning member 2 and the valve core 4. When the medium flows in from the outside of the conical cover valve core 4, the fluid pressure overcomes the spring force of the spring 11 to push the valve core 4 away from the valve seat 3, thereby opening the valve. When the medium flows in the opposite direction, the fluid thrust, the spring force of the spring 11 and the pressure difference generated by the flow through the gap between the valve core 4 and the valve seat 3 work together to make the valve core 4 move towards the valve seat 3, so that the conical cover valve core 4 fits tightly with the oblique protrusion 5 to form a reliable conical seal.

[0026] Meanwhile, when the medium flows in from the outside of the conical cover valve core 4 and pushes the conical cover valve core 4 to move, the spring 11 can dampen the shock, making the movement of the valve core 4 more stable.

[0027] See Figure 1 A welding ring 7 is fitted on the outside of the valve seat 3. The welding ring 7 is welded inside the valve seat 3. The valve seat 3 and the outer shell 1 are connected by the welding ring 7, which improves the sealing between the valve seat 3 and the outer shell 1.

[0028] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0031] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A stainless steel check valve for air conditioning piping, characterized in that, include: Outer shell (1), The positioning component (2) is fixedly connected to the inside of the outer shell (1) by the deformation of the outer shell (1). The valve seat (3) is fixedly connected inside the outer casing (1). The valve core (4) is slidably disposed inside the positioning member (2) and, together with the valve seat (3), forms a seal on the inside of the outer shell (1); The valve core (4) is a conical cover, and the valve seat (3) has an integrally formed oblique protrusion (5).

2. The stainless steel check valve for air conditioning pipelines according to claim 1, characterized in that, The valve core (4) is fixedly connected to a guide post (6), which is slidably disposed inside the positioning member (2).

3. The stainless steel check valve for air conditioning pipelines according to claim 1, characterized in that, The valve seat (3) is fitted with a welding ring (7) on its outside, and the valve seat (3) is fixedly connected to the inside of the outer shell (1) by the welding ring (7).

4. The stainless steel check valve for air conditioning pipelines according to claim 1, characterized in that, The outer shell (1) is deformed to form an inwardly recessed protruding ring (8), and the positioning member (2) is fixedly connected to the inside of the outer shell (1) through the protruding ring (8).

5. The stainless steel check valve for air conditioning pipelines according to claim 4, characterized in that, The outer shell (1) is deformed to form a variable diameter portion (9) for limiting the position of the positioning member (2) and a mounting groove (10) for installation.

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