Solenoid valve
By designing the first valve body of the solenoid valve in a segmented manner, combining the first fitting section with a larger inner diameter and the second fitting section with a smaller inner diameter, the problems of piston valve opening ability and pressure resistance in the miniaturized solenoid valve are solved, and efficient high-pressure fluid control is achieved.
Patent Information
- Application Number
- CN202420912739.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2024-02-22
- Filing Date
- 2024-04-29
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-04-29
AI Technical Summary
In solenoid valves with high pressure fluids such as carbon dioxide, the valve body needs to have high pressure resistance, and the valve opening ability of the piston is limited by its size, which leads to the piston being too small under the demand for miniaturization, making it difficult to meet the improvement of the valve opening ability.
By performing a segmented design with different inner diameters of the first valve body, the first mating section with a larger inner diameter cooperates with the piston member to increase the size of the piston member to facilitate the opening of the valve; the second mating section with a smaller inner diameter is connected to the second valve body to reduce the joint size and pressure area and improve the pressure resistance.
In the miniaturized solenoid valve, the valve opening capability of the piston and the pressure resistance of the valve body are improved, ensuring stable control of high-pressure fluid.
Smart Images
Figure CN222910921U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of fluid control, in particular to a solenoid valve. Background Art
[0002] In the field of solenoid valves for high-pressure fluids, such as carbon dioxide, the valve body is required to have high pressure resistance. Therefore, the connection position of the valve body needs to have sufficient pressure resistance, and the pressure-receiving surface should not be too large; at the same time, the valve-opening ability of the piston is determined by the difference in the upper and lower pressure differences, so the larger the piston, the more conducive to valve opening; in order to meet the demand for miniaturization of solenoid valves, the size of the valve body becomes smaller. Due to the limited installation and mating dimensions of the piston, the smaller piston has a smaller corresponding pressure-receiving area. Summary of the Utility Model
[0003] In view of the deficiencies in the related art, the present utility model provides a solenoid valve, which includes a valve body component and a piston component.
[0004] The valve body component includes a first valve body part and a second valve body part. The first valve body part includes a first mating section and a second mating section. The outer wall of the piston component is slidably mated with the inner wall of the first mating section.
[0005] The second valve body part includes a base and a protruding part. The base includes a pressure-receiving surface and a connecting surface. The connecting surface is connected to the second mating section. The protruding part protrudes towards the piston component relative to the pressure-receiving surface. The protruding part includes a valve port part, and the piston component can abut against the valve port part.
[0006] Define the inner diameter of the first mating section as D1 and the inner diameter of the second mating section as D2, then D1 > D2.
[0007] Compared with the related art, the present utility model adopts a segmented design with different inner diameters for the first valve body part. The first mating section with a larger inner diameter is mated with the piston component to increase the size that can accommodate the piston component, and a larger size is more conducive to valve opening; the second mating section with a smaller inner diameter is connected to the second valve body part, so that the connection part has a smaller joint size and pressure-receiving area, improving the pressure resistance strength. Brief Description of the Drawings
[0008] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below. Among them, the drawings are only used to show some embodiments of the present utility model, rather than limiting all embodiments of the present utility model thereto. In the drawings:
[0009] Figure 1 is the overall schematic diagram of the solenoid valve in the present utility model;
[0010] Figure 2 is the internal structure schematic diagram of the solenoid valve in the present utility model;
[0011] Figure 3 For Figure 2 Partial enlarged view A1 of position A in
[0012] Figure 4 For Figure 2 Partial enlarged view A2 of position A in
[0013] Figure 5 For Figure 4 Partial enlarged view of position B in
[0014] In the figure:
[0015] 100, valve body component; 101, first valve cavity; 102, second valve cavity; 110, first valve body part; 111, first mating section; 112, second mating section; 113, third mating section; 114, first connection hole; 1141, first flared section; 115, drainage part; 120, second valve body part; 121, protruding part; 1211, straight wall section; 1212, small diameter section; 1213, tapered section; 122, base; 1221, pressure-bearing surface; 1222, connection surface; 123, valve port part; 124, second connection hole; 1241, second flared section; 200, piston component; 210, piston base; 220, pilot valve passage; 230, annular step surface; 240, sealing ring; 250, balance passage; 300, connection part; 301, insertion section; 302, wire-drawing surface; 310, first connection pipe; 320, second connection pipe; 400, valve cover component; 410, cover body; 420, sleeve; 500, valve core component. Specific embodiments
[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0017] In the accompanying drawings, for clarity, the shapes and dimensions may be enlarged, and the same reference numerals will be used throughout all the figures to indicate the same or similar components.
[0018] In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc. are defined with respect to the configurations shown in the respective drawings. In particular, "height" corresponds to the dimension from the top to the bottom, "width" corresponds to the dimension from the left to the right, and "depth" corresponds to the dimension from the front to the back. They are relative concepts and thus may change accordingly depending on their different positions and usage states. Therefore, these or other orientations should not be construed as restrictive terms.
[0019] Terms related to attachment, connection, etc. (e.g., "connect" and "attach") refer to the relationship in which these structures are directly or indirectly fixed or attached to each other through an intermediate structure, as well as a movable or rigid attachment or relationship, unless otherwise explicitly stated.
[0020] To achieve the above-mentioned objects and other advantages of the present utility model, the following technical solutions are provided by the present utility model:
[0021] Figures 1 to 5 It is a schematic structural diagram of the solenoid valve in the present utility model, and the specific structure of the present utility model is as follows:
[0022] The present utility model provides a solenoid valve, which includes a valve body component 100, a piston component 200, a connecting pipe component 300, a valve cover component 400, and a valve core component 500.
[0023] Specifically, as shown in Figure 1 , Figure 2 , Figure 3 The valve body component 100 includes a first valve body part 110 and a second valve body part 120. The second valve body part 120 has a valve port part 123. The first valve body part 110 is connected to the second valve body part 120, and the valve cover component 400 is connected to the first valve body part 110. Along the longitudinal direction of the solenoid valve, the valve core component 500 is slidably engaged with the valve cover component 400, and the piston component 200 is accommodated in the inner cavity of the valve body component 100 and is slidably engaged with the valve body component 100. The piston component 200 has a pilot valve passage 220 and a balance passage 250. The pilot valve passage 220 communicates with the valve port part 123, and the balance passage 250 communicates the first valve cavity 101 and the second valve cavity 102. In the valve closed state, the valve core component 500 abuts against the piston component 200, and the piston component 200 abuts against the valve port part 123. The piston component 200 divides the inner cavity of the valve body component 100 into a first valve cavity 101 above and a second valve cavity 102 below.
[0024] The first valve body part 110 includes a first mating section 111 and a second mating section 112. Define the inner diameter of the first mating section 111 as D1 and the inner diameter of the second mating section 112 as D2, then D1 > D2. The outer wall of the piston component 200 is in sliding fit with the inner wall of the first mating section 111.
[0025] Through the above structural design, the first mating section 111 that is in sliding fit with the piston component 200 has a larger inner diameter. Therefore, compared with an electromagnetic valve with a uniform inner diameter, it can accommodate a piston component 200 with a larger diameter. The valve opening ability of the piston component 200 is determined by the pressure difference between the first valve cavity 101 above the piston component 200 and the second valve cavity 102 below the piston component 200. A piston with a larger size has a relatively larger pressure-receiving surface, which is more conducive to opening the valve and also facilitates the technical personnel to optimize its structure.
[0026] Preferably, the piston component 200 includes a sealing ring 240. The sealing ring 240 is arranged on the outer wall of the piston component 200 that is in sliding fit with the valve body component 100, improving the impurity resistance performance of the electromagnetic valve.
[0027] The second valve body part 120 includes a base 122 and a protruding part 121. The base 122 includes a pressure-bearing surface 1221 and a connecting surface 1222. The connecting surface 1222 is connected to the second mating section 112. The pressure-bearing surface 1221 is an annular surface. The pressure-bearing surface 1221 is located in the direction of the piston component 200 of the base 122, and the pressure-bearing surface 1221 is connected to the connecting surface 1222. The pressure-bearing surface 1221 bears the downward pressure of the fluid in the second valve cavity 102. The protruding part 121 protrudes towards the piston component 200 relative to the pressure-bearing surface 1221. The protruding part 121 includes a valve port part 123, and the piston component 200 can abut against the valve port part 123.
[0028] Through the above structural design, the second mating section 112 connected to the second valve body part 120 has a smaller inner diameter. Therefore, when the second valve body part 120 is connected to the first valve body part 110, it has a smaller joint size in diameter, and the pressure-bearing area of the joint is smaller, thereby reducing the influence of the fluid pressure borne by the annular pressure-bearing surface 1221 above the base 122 on the connecting joint, making the valve body component 100 more pressure-resistant.
[0029] Preferably, the connecting surface 1222 and the second mating section 112 are fixed by welding to enhance the connection reliability.
[0030] In an embodiment, as Figure 3As shown in [reference], the protrusion 121 includes a straight wall section 1211, a tapered section 1213, and a small-diameter section 1212. The small-diameter section 1212 is located at the end of the protrusion 121 close to the piston member 200. The straight wall section 1211 and the small-diameter section 1212 are transitioned by the tapered section 1213. In the valve-closed state, the small-diameter section 1212 of the protrusion 121 abuts against the piston member 200, expanding the pressure-receiving area below the piston member 200, which is beneficial for valve opening.
[0031] The piston member 200 includes a piston base 210, and the piston base 210 includes a downward annular stepped surface 230, which is connected to the outer wall surface of the piston base 210. In the valve-closed state of the solenoid valve, the piston base 210 abuts against the valve port portion 123 on the protrusion 121, and there is a distance d between the annular stepped surface 230 and the lower end of the inner wall of the first fitting section 111.
[0032] Preferably, the inner walls of the first fitting section 111 and the third fitting section 113 with a smaller inner diameter are transitioned by an inclined drainage portion 115.
[0033] Through the above structural design, the annular stepped surface 230 and the drainage portion 115 form a fluid accommodation cavity. The pressure-receiving surface of the piston member 200 does not contact the inner diameter changing section of the first valve body portion 110, ensuring the pressure-receiving area of the piston member 200, facilitating the fluid to act on the piston member 200 to push the valve open, and improving the valve-opening performance.
[0034] As Figure 4 As shown in [reference], the first valve body portion 110 further includes a third fitting section 113. The third fitting section 113 connects the first fitting section 111 and the second fitting section 112. Define the inner diameter of the third fitting section 113 as D3 and the wall thickness as H3. Define the wall thickness of the first fitting section 111 as H1, then D3 > D2 and H3 > H1.
[0035] The solenoid valve of this embodiment further includes a connecting pipe member 300, and the connecting pipe member 300 includes a first connecting pipe 310 and a second connecting pipe 320. The first connecting pipe 310 is an inlet connecting pipe, which communicates with the second valve cavity 102. The second connecting pipe 320 is an outlet connecting pipe, which communicates with the valve port portion 123. The third fitting section 113 includes a first connecting pipe hole 114, and the first connecting pipe 310 is welded and fixed to the first connecting pipe hole 114.
[0036] Through the above structural design, the third fitting section 113 has a larger wall thickness, so that the size of the connecting pipe hole for connecting the inlet connecting pipe is deeper, with a larger connecting area, facilitating the assembly and fixation of the inlet connecting pipe, and at the same time, the connection is more firm.
[0037] Preferably, as Figure 5As shown in the figure, the hole wall of the first connection hole 114 includes a first flared section 1141, and the first flared section 1141 is located on the port side of the hole wall of the first connection hole 114 where the first connection pipe 310 extends in.
[0038] The base 122 of the second valve body part 120 includes a second connection hole 124, and the second connection pipe 320 is fixedly welded to the second connection hole 124. The hole wall of the second connection hole 124 includes a second flared section 1241, and the second flared section 1241 is located on the port side of the hole wall of the second connection hole 124 where the second connection pipe 320 extends in.
[0039] The second connection pipe 320 includes an insertion section 301, the insertion section 301 is arranged at one end of the second connection pipe 320, and the outer surface of the insertion section 301 includes a wire-drawn surface 302. It can be conceived that, similarly, the first connection pipe 310 can also be provided with a wire-drawn surface.
[0040] Through the above structural design, the connection hole and the connection pipe are fixedly welded, a flared section is arranged on the outer side of the connection hole, the insertion section 301 of the connection pipe is provided with a wire-drawn surface 302, and during welding, the solder flows into the gap between the wire-drawn surface 302 and the connection hole through the flared section and is evenly guided to the connection gap by the wire-drawn surface 302, which can improve the welding quality.
[0041] As Figure 1 、 Figure 2 shown, the solenoid valve further includes a valve cover component 400 and a valve core component 500. The valve cover component 400 includes a cover body 410 and a sleeve 420. The sleeve 420 is connected to the cover body 410, the cover body 410 is connected to the first fitting section 111, and at least part of the valve core component 500 is accommodated in the sleeve 420; the valve core component 500 can abut against the pilot valve passage 220.
[0042] Preferably, the first valve body part 110, the second valve body part 120, the cover body 410 and the sleeve 420 are made of stainless steel material. The main body structure of the solenoid valve made of stainless steel material has a lower cost and is more environmentally friendly compared with the traditional brass material solenoid valve.
[0043] In the solenoid valve of the present utility model, by adopting a segmented design with different inner diameters and wall thicknesses for the first valve body part 110, the segment with a larger inner diameter cooperates with the piston component 200 to increase the size that can accommodate the piston component 200, which is beneficial for opening the valve; the segment with a smaller inner diameter is connected to the second valve body part 120 with a valve port part 123, so that the connection part has a smaller joint size and a smaller pressure-bearing area, improving the pressure resistance strength; the segment with a larger wall thickness is used to connect with the connecting pipe part 300, increasing the connection area of the connecting pipe and making the connection more firm.
[0044] Although the embodiments of the present utility model have been disclosed as above, it is not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present utility model. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present utility model is not limited to the specific details and the illustrated examples described herein.
Claims
1. A solenoid valve, characterized in that: It comprises a valve body component (100) and a piston component (200); The valve body component (100) comprises a first valve body portion (110) and a second valve body portion (120), the first valve body portion (110) comprises a first matching section (111) and a second matching section (112), and the outer wall of the piston component (200) is slidably matched with the inner wall of the first matching section (111); The second valve body portion (120) comprises a base (122) and a protruding portion (121); the base (122) comprises a pressure-bearing surface (1221) and a connecting surface (1222); the connecting surface (1222) is fixedly connected to the second matching section (112); the protruding portion (121) protrudes relative to the pressure-bearing surface (1221) toward the piston component (200); the protruding portion (121) comprises a valve opening portion (123); the piston component (200) can abut against the valve opening portion (123); The inner diameter of the first matching section (111) is defined as D1, and the inner diameter of the second matching section (112) is defined as D2, then D1>D2.
2. The solenoid valve according to claim 1, characterized in that The pressure-bearing surface (1221) is an annular surface. The pressure-bearing surface (1221) is located on the base (122) in a direction toward the piston component (200). The pressure-bearing surface (1221) connects the protruding portion (121) and the connecting surface (1222). The pressure-bearing surface (1221) bears the fluid pressure of the inner cavity of the valve body component (100).
3. The solenoid valve according to claim 1, characterized in that: The piston component (200) includes a piston base (210), and the piston base (210) includes an annular step surface (230) with the step surface facing downward, and the annular step surface (230) is connected to the outer wall surface of the piston base (210); in the valve closing state, the annular step surface (230) is spaced from the lower end of the inner wall of the first matching section (111); the connecting surface (1222) is welded and fixed to the second matching section (112).
4. The solenoid valve according to claim 1, characterized in that: The protrusion (121) comprises a straight wall section (1211), a conical section (1213) and a small diameter section (1212); the small diameter section (1212) is located at the end of the protrusion (121) close to the piston component (200); the straight wall section (1211) and the small diameter section (1212) are transitioned through the conical section (1213).
5. The solenoid valve according to any one of claims 1 to 4, characterized in that: The first valve body portion (110) further comprises a third matching section (113), the third matching section (113) being located between the first matching section (111) and the second matching section (112), the inner diameter of the third matching section (113) being defined as D3, the wall thickness being defined as H3, the wall thickness of the first matching section being defined as H1, then D3>D2, H3>H1; The solenoid valve further comprises a connecting pipe component (300), wherein the connecting pipe component (300) comprises an insertion section (301); the connecting pipe component (300) comprises a first connecting pipe (310), wherein the third matching section (113) comprises a first connecting pipe hole (114), wherein the insertion section (301) of the first connecting pipe (310) is located in the first connecting pipe hole (114), and the first connecting pipe (310) and the third matching section (113) are fixed by welding.
6. The solenoid valve according to claim 5, characterized in that The first valve body portion (110) further comprises a drainage portion (115), wherein the drainage portion (115) connects the first matching section (111) and the third matching section (113).
7. The solenoid valve according to claim 5, characterized in that The connecting pipe (300) further comprises a second connecting pipe (320); the base (122) comprises a second connecting pipe hole (124); the insertion section (301) of the second connecting pipe (320) is located in the second connecting pipe hole (124); and the second connecting pipe (320) is fixed to the second valve body (120) by welding.
8. The solenoid valve according to claim 7, characterized in that The hole wall of the first connecting pipe hole (114) comprises a first horn section (1141), and the first horn section (1141) is located on a side of a port of the hole wall of the first connecting pipe hole (114) through which the first connecting pipe (310) extends; The hole wall of the second connecting pipe hole (124) comprises a second horn section (1241), and the second horn section (1241) is located on a side of a port of the hole wall of the second connecting pipe hole (124) through which the second connecting pipe (320) extends.
9. The solenoid valve according to claim 5, characterized in that: The insertion section (301) is arranged at one end of the first connecting pipe (310), and the outer surface of the insertion section (301) includes a brushed surface (302).
10. The solenoid valve according to claim 5, characterized in that It also includes a valve cover component (400) and a valve core component (500), wherein the valve cover component (400) includes a cover body (410) and a sleeve (420), wherein the sleeve (420) is connected to the cover body (410), wherein the cover body (410) is connected to the first matching section (111), and the valve core component (500) is at least partially accommodated in the sleeve (420); The piston component (200) has a pilot valve passage (220), and the valve core component (500) can abut against the pilot valve passage (220).
11. The solenoid valve according to claim 10, characterized in that The first valve body (110), the second valve body (120), the cover (410) and the sleeve (420) are made of stainless steel.