Compact electromagnetic valve seat

Abstract

The utility model provides a compact electromagnetic valve seat which comprises a body with a center hole, a valve element matching part is arranged at the upper end of the center hole, a sinking table part is arranged on the periphery of the valve element matching part, an annular groove is formed in the sinking table part, and a first connecting pipe matching hole and a second connecting pipe matching hole are formed in the lower end of the center hole. The first connecting pipe matching hole and the second connecting pipe matching hole are eccentrically formed in the body, the axial directions of the first connecting pipe matching hole and the second connecting pipe matching hole are the same, the second connecting pipe matching hole is communicated with the annular groove through a connecting hole, and the diameter of the connecting hole is the same as that of the center hole; the diameter of the first connecting pipe matching hole is larger than that of the center hole, a first connecting pipe positioning table is formed between the first connecting pipe matching hole and the center hole, the diameter of the second connecting pipe matching hole is larger than that of the connecting hole, and a second connecting pipe positioning table is formed between the second connecting pipe matching hole and the connecting hole. The electromagnetic valve is compact in structure and small in radial size and axial size, materials are saved, production cost is reduced, structural layout design of the electromagnetic valve is easier, and limitation is small.

Description

Technical Field

[0001] This invention belongs to the field of electromagnetic valve technology, and in particular relates to a compact electromagnetic valve seat. Background Technology

[0002] Solenoid valves are generally used in industrial control systems to adjust the direction, flow rate, speed, and other parameters of the medium. Direct-acting solenoid valves, when energized, generate electromagnetic force through the solenoid coil to lift the closing element from the valve seat, opening the valve; when de-energized, the electromagnetic force disappears, and the spring presses the closing element back onto the valve seat, closing the valve. In existing technology, the inlet and outlet pipes of solenoid valves are typically arranged at a 90-degree angle, with the inlet and outlet pipes fixed to opposite directions of the valve seat. The valve seat is usually made of brass, resulting in a complex structure that requires machining a cylindrical section for fixed connection with a sleeve. Since the valve seat and moving iron core mating part are located inside the cylindrical section, machining is difficult, leading to potential internal leakage. Furthermore, the valve seat and sleeve are generally fixed using high-frequency welding; heating increases the gap between the sleeve and valve seat, causing the sleeve to tilt, affecting the concentricity of the valve port and sleeve, making it difficult to reliably guarantee assembly accuracy, and resulting in a low product qualification rate. In addition, existing valve seats are large in size, long in axial length, and require a lot of material, limiting their selection and design. Therefore, it is necessary to improve existing solenoid valve seats. Summary of the Invention

[0003] In view of this, the present invention aims to overcome the defects in the prior art and propose a compact solenoid valve seat.

[0004] To achieve the above objectives, the technical solution created by this invention is implemented as follows:

[0005] A compact solenoid valve seat includes a body with a central hole. A valve core mating portion is located at the upper end of the central hole, and a countersunk portion is located around the valve core mating portion. An annular groove is located on the countersunk portion. A first connecting pipe mating hole is located at the lower end of the central hole, and a second connecting pipe mating hole is located on one side of the first connecting pipe mating hole. Both the first and second connecting pipe mating holes are eccentrically arranged on the body, and their axial directions are the same. The second connecting pipe mating hole is connected to the annular groove via a connecting hole with the same diameter as the central hole. The diameter of the first connecting pipe mating hole is larger than the diameter of the central hole, forming a first connecting pipe positioning platform between the first connecting pipe mating hole and the central hole. The diameter of the second connecting pipe mating hole is larger than the diameter of the connecting hole, forming a second connecting pipe positioning platform between the second connecting pipe mating hole and the connecting hole.

[0006] Furthermore, the valve core mating part includes an upwardly protruding truncated cone, with the upper opening of the central hole located at the center of the truncated cone.

[0007] Furthermore, the depth of the annular groove is less than 1 / 4 of the thickness of the body.

[0008] Furthermore, the first fitting hole and the second fitting hole have the same depth.

[0009] Furthermore, the depth of the first connecting pipe mating hole is less than 1 / 2 of the body thickness, and the depth of the second connecting pipe mating hole is less than 1 / 2 of the body thickness.

[0010] Furthermore, the body and valve core mating part are integrally formed from stainless steel.

[0011] Furthermore, the connecting hole is eccentrically arranged on the body.

[0012] Furthermore, the body has a cylindrical structure, and a sleeve mating platform is machined on its outer wall surface.

[0013] Compared with existing technologies, the present invention has the following advantages:

[0014] The solenoid valve seat provided by this invention has a compact structure with small radial and axial dimensions, which not only saves materials and reduces production costs, but also only requires precision machining of the valve port at the upper end of the valve core mating part, reducing the machining difficulty. Furthermore, the valve core mating part adopts a conical structure, which is more conducive to the valve seat being installed in the sleeve. The compact structure of the valve seat makes it easier to design the solenoid valve structure layout and has fewer limitations. Attached Figure Description

[0015] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0016] Figure 1 This is a schematic diagram showing the assembly of the sleeve with the present invention.

[0017] Figure 2 A schematic diagram of the structure of the compact solenoid valve seat created by this invention;

[0018] Figure 3 for Figure 2 Top view;

[0019] Figure 4 for Figure 2 A bottom view. Detailed Implementation

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0021] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] The invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] A compact solenoid valve seat, such as Figures 1 to 4 As shown, the device includes a body 1 with a central hole 2, a valve core mating part 3 at the upper end of the central hole, and a countersunk part 4 around the valve core mating part. The body has a cylindrical structure, and a sleeve mating platform 10 is machined on its outer wall surface. The plane of the sleeve mating platform is perpendicular to the axis of the central hole. Typically, the body and the countersunk part are transitioned by an arc. The valve core mating part includes an upwardly protruding frustum, and the upper opening of the central hole is located at the center of the frustum, that is, the valve port is located at the center of the frustum. When manufacturing the solenoid valve, the valve seat body and the sleeve are tightly fitted, and the end of the sleeve abuts against the sleeve mating platform, thereby realizing the valve seat assembly. The sleeve and the valve seat are then welded and fixed by argon welding, ensuring the concentricity of the sleeve and the valve port.

[0025] The recessed section is provided with an annular groove 5, and the lower end of the central hole is provided with a first connecting pipe mating hole 6. A second connecting pipe mating hole is provided on one side of the first connecting pipe mating hole. The first connecting pipe mating hole and the second connecting pipe mating hole are both eccentrically arranged on the body, and the axial directions of the first connecting pipe mating hole and the second connecting pipe mating hole are the same. When assembling the finished solenoid valve, it is very convenient to assemble and position the first connecting pipe 11 on the first connecting pipe mounting hole and the second connecting pipe 12 on the second connecting pipe mounting hole.

[0026] The second connecting hole and the annular groove are connected by a connecting hole 7, the diameter of which is the same as that of the center hole; the diameter of the first connecting hole is larger than that of the center hole, forming a first connecting hole positioning platform 8 between the first connecting hole and the center hole; the diameter of the second connecting hole is larger than that of the connecting hole, forming a second connecting hole positioning platform 9 between the second connecting hole and the connecting hole.

[0027] The depth of the annular groove is less than 1 / 4 of the body thickness. The depths of the first and second connecting pipe mating holes are the same. The depth of the first connecting pipe mating hole is less than 1 / 2 of the body thickness, and the depth of the second connecting pipe mating hole is less than 1 / 2 of the body thickness. The connecting hole is eccentrically arranged on the body. The body and valve core mating part are integrally formed from stainless steel.

[0028] When this valve seat is used in a solenoid valve, when the moving iron core moves, the steel ball 13 on the moving iron core fits tightly against the valve port, the solenoid valve closes, and the medium no longer flows; when the solenoid valve coil is energized, the moving iron core moves towards the stationary head, the steel ball disengages from the valve port, and at this time the central hole of the valve seat is connected to the annular cavity around the valve core mating part. Since this annular cavity is connected to the annular groove and connecting hole on the valve seat, the first connecting pipe mating hole and the second connecting pipe mating hole are connected, that is, the medium is connected, and the solenoid valve opens.

[0029] The solenoid valve seat provided by this invention has a compact structure with small radial and axial dimensions, which not only saves materials and reduces production costs, but also only requires precision machining of the valve port at the upper end of the valve core mating part, reducing the machining difficulty. Furthermore, the valve core mating part adopts a conical structure, which is more conducive to the valve seat being installed in the sleeve. The compact structure of the valve seat makes it easier to design the solenoid valve structure layout and has fewer limitations.

[0030] The above description is merely 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 within the protection scope of the present invention.

Claims

1. A compact solenoid valve seat, characterized in that: The device includes a body with a central hole. A valve core mating part is located at the upper end of the central hole, and a countersunk portion is located around the valve core mating part. An annular groove is located on the countersunk portion. A first connecting pipe mating hole and a second connecting pipe mating hole are located at the lower end of the central hole. Both the first and second connecting pipe mating holes are eccentrically arranged on the body, and their axial directions are the same. The second connecting pipe mating hole is connected to the annular groove via a connecting hole with the same diameter as the central hole. The diameter of the first connecting pipe mating hole is larger than the diameter of the central hole, forming a first connecting pipe positioning platform between the first connecting pipe mating hole and the central hole. The diameter of the second connecting pipe mating hole is larger than the diameter of the connecting hole, forming a second connecting pipe positioning platform between the second connecting pipe mating hole and the connecting hole.

2. The compact solenoid valve seat according to claim 1, characterized in that: The valve core mating part includes an upwardly protruding truncated cone, with the upper opening of the central hole located at the center of the truncated cone.

3. A compact solenoid valve seat according to claim 1, characterized in that: The depth of the annular groove is less than 1 / 4 of the thickness of the body.

4. A compact solenoid valve seat according to claim 1, characterized in that: The first fitting hole and the second fitting hole have the same depth.

5. A compact solenoid valve seat according to claim 1, characterized in that: The depth of the first connecting pipe mating hole is less than 1 / 2 of the body thickness, and the depth of the second connecting pipe mating hole is less than 1 / 2 of the body thickness.

6. A compact solenoid valve seat according to claim 1, characterized in that: The body and valve core mating part are made of stainless steel in one piece.

7. A compact solenoid valve seat according to claim 1, characterized in that: The connecting hole is eccentrically arranged on the body.

8. A compact solenoid valve seat according to claim 1, characterized in that: The body has a cylindrical structure, and a sleeve mating platform is machined on its outer wall surface.

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