Sealing structure on electromagnetic valve

Abstract

The utility model relates to the technical field of electromagnetic valves, and discloses a sealing structure on an electromagnetic valve, which comprises a shell provided with two symmetrically distributed inner sleeve ports; an inner sleeve is coaxially arranged above the inner sleeve opening; the lower port of the inner sleeve is sleeved with an O-shaped ring, a pressing ring is installed on the inner sleeve opening, and the inner sleeve is sleeved with the pressing ring; compared with a previous sealing scheme, the sealing structure has the advantages that the procedure of screwing a screw is changed into threaded screwing, so that the operation procedure is simplified, screw parts are reduced, and the cost is reduced; and meanwhile, the inner sleeve is rotationally connected and fixed through the pressing ring, the inner sleeve only moves in the axial direction in the assembling process, the risk of distortion of the O-shaped ring is reduced, and the sealing performance is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of electromagnetic valves, and in particular relates to a sealing structure on a electromagnetic valve. Background Art

[0002] Currently, the components on the solenoid valve are sealed by O-rings or Y-rings, and after the components are assembled, they are connected and fixed by screws;

[0003] The components are sealed with O-rings and then the two components are fixed with screws;

[0004] The disadvantages of the prior art 1 are: a screw driving process is required during the assembly process, which takes a relatively long time, and multiple screws may be required for connection, which increases the cost.

[0005] In view of this, the present utility model is proposed. Summary of the Invention

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0007] A sealing structure on a solenoid valve includes a shell with two symmetrically distributed inner sleeve openings; an inner sleeve is coaxially arranged above the inner sleeve openings; an O-ring is sleeved on the lower end of the inner sleeve; a pressure ring is installed on the inner sleeve opening, and the pressure ring is sleeved on the inner sleeve.

[0008] As a preferred embodiment of the present invention, a truncated cone ring is integrally provided at the lower end of the inner sleeve, the pressure ring is located above the truncated cone ring; and the O-ring is located below the truncated cone ring.

[0009] As a preferred embodiment of the present invention, a thread is provided on the side wall of the inner sleeve opening, and is adapted to be screwed together with the thread provided on the outer wall of the pressure ring.

[0010] As a preferred embodiment of the present invention, the O-ring is a rubber sealing ring.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] In the present invention, the inner sleeve and the O-ring are coaxial, and the O-ring is tangent to the lower plane of the inner sleeve step to form an inner sleeve assembly. The inner sleeve assembly is coaxial with the inner cavity of the shell and is vertically inserted into the shell. The O-ring on it is interference fit with the inner cavity of the shell to form a radial seal. The pressure ring is concentric with the inner cavity of the shell, and the inner hole passes through the middle column of the inner sleeve. It is screwed together with the shell through a thread, and at the same time, the bottom surface presses the upper plane of the inner sleeve, thereby fixing the inner sleeve up and down. Compared with the previous sealing solution, the present invention changes the screw driving process to threaded connection, which simplifies the operation process and reduces the screw parts, thus reducing the cost. At the same time, the inner sleeve is fixed by screwing the pressure ring. During the assembly process, the inner sleeve only moves axially, which reduces the risk of distortion of the O-ring and ensures the sealing performance.

[0013] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In the attached figure:

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

[0016] Figure 2 This is a schematic diagram of the structure after the utility model is assembled.

[0017] In the figure: 1. Inner sleeve; 2. O-ring; 3. Inner sleeve opening; 4. Shell; 5. Pressure ring. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0019] like Figures 1 to 2 As shown, a sealing structure on a solenoid valve includes a shell 4, which is provided with two symmetrically distributed inner sleeve ports 3; an inner sleeve 1 is coaxially arranged above the inner sleeve ports 3; an O-ring 2 is sleeved on the lower end of the inner sleeve 1, and a pressure ring 5 is installed on the inner sleeve port 3, and the pressure ring 5 is sleeved on the inner sleeve 1.

[0020] like Figures 1 to 2As shown, in a specific embodiment, the lower end of the inner sleeve 1 is integrally provided with a truncated cone ring, with a pressure ring 5 positioned above the truncated cone ring; an O-ring 2 is positioned below the truncated cone ring. The O-ring 2 is a rubber sealing ring, and the sidewall of the inner sleeve opening 3 is threaded, which mates with the threads on the outer wall of the pressure ring 5. Compared with previous sealing solutions, this arrangement replaces the screw driving process with threaded connection, simplifying the operation process, reducing the number of screw components, and lowering costs. Furthermore, by screwing the pressure ring to secure the inner sleeve, the inner sleeve only moves axially during assembly, reducing the risk of O-ring distortion and ensuring sealing performance.

[0021] The sealing structure of a solenoid valve in this embodiment operates as follows: In this structure, inner sleeve 1 and O-ring 2 are coaxial, and O-ring 2 is tangential to the lower surface of the step of inner sleeve 1, forming inner sleeve assembly 3. Inner sleeve assembly 3 is coaxial with the inner cavity of housing 4 and inserted vertically into housing 4. The O-ring 2 on inner sleeve assembly 3 forms an interference fit with the inner cavity of housing 4, creating a radial seal. A pressure ring 5 is concentric with the inner cavity of housing 4, with its inner hole extending through the center column of inner sleeve 1. It is threadedly connected to housing 4, and its bottom surface presses against the upper surface of inner sleeve 1, thereby securing inner sleeve 1 vertically.

[0022] Compared with previous sealing solutions, the present invention changes the screw driving process into threaded connection, which simplifies the operation process, reduces the number of screw parts, and reduces costs. At the same time, the inner sleeve is fixed by screwing the pressure ring. During the assembly process, the inner sleeve only moves axially, reducing the risk of O-ring distortion and ensuring sealing performance.

[0023] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or also includes elements inherent to such process, method, article, or apparatus;

[0024] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

[0025] The above description only describes the specific implementation methods of the utility model. Various examples do not limit the essential content of the utility model. Ordinary technicians in the relevant technical field can make modifications or deformations to the specific implementation methods described above after reading the description without departing from the essence and scope of the utility model.

Claims

1. A sealing structure on a solenoid valve, comprising a housing (4), characterized in that: The housing (4) is provided with two symmetrically distributed inner sleeve openings (3); An inner sleeve (1) is coaxially arranged above the inner sleeve opening (3); The lower end of the inner sleeve (1) is sleeved with an O-ring (2), and the inner sleeve opening (3) is provided with a pressure ring (5), which is sleeved on the inner sleeve (1).

2. The sealing structure on a solenoid valve according to claim 1, characterized in that: The lower end of the inner sleeve (1) is integrally provided with a truncated cone ring, the pressure ring (5) is located above the truncated cone ring, and the O-ring (2) is located below the truncated cone ring.

3. The sealing structure on a solenoid valve according to claim 1, characterized in that: The side wall of the inner sleeve opening (3) is provided with a thread, which is adapted to be screwed together with the thread provided on the outer wall of the pressure ring (5).

4. The sealing structure on a solenoid valve according to claim 1, characterized in that: The O-ring (2) is a rubber sealing ring.

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