Solenoid valve

Abstract

The electromagnetic valve comprises a valve body part, an iron core part and a piston part, the valve body part comprises a valve seat, the valve seat comprises a valve port part, the electromagnetic valve is characterized in that the valve seat comprises a surrounding part, the piston part comprises a piston body, a closing part and a flow control part, the closing part is located between the piston body and the flow control part, and the flow control part is located between the iron core part and the piston part. When the electromagnetic valve is in a valve closing state, the closing part abuts against the valve port part, and the iron core part abuts against the piston body; when the electromagnetic valve is in the maximum valve opening state, the surrounding part surrounds at least part of the flow control part in the circumferential direction of the electromagnetic valve, and the rated flow is calibrated through cooperation of the flow control part on the piston component and the valve seat.

Description

Technical Field

[0001] The present application relates to the field of valve technology, and in particular, to a solenoid valve. Background Art

[0002] A pilot solenoid valve is a valve that controls the valve opening state through an electrical signal, and includes a valve body, an iron core, a piston, etc. Figure 6 As shown, the existing valve 1' is realized by the piston component 6' and the valve seat 21' cooperating to realize the switching function. The valve opening flow rate of the valve 1' is determined by the diameter of the valve seat valve port and the piston. If the maximum valve opening flow rate of the valve needs to be changed, the diameter of the valve port and the piston needs to be changed at the same time, so that the size of the entire valve needs to be changed. Utility Model Content

[0003] One object of the present application is to provide a solenoid valve, comprising: a valve body component, an iron core component, and a piston component, wherein the valve body component comprises a valve seat, the valve seat comprises a valve mouth portion and a surrounding portion, the piston component comprises a piston body, a closing portion, and a flow control portion, the closing portion being located between the piston body and the flow control portion, and when the solenoid valve is in a closed state, the closing portion abuts the valve mouth portion, and the iron core component abuts the piston body; when the solenoid valve is in a maximum open state, the surrounding portion is arranged to surround at least a portion of the flow control portion in the circumferential direction of the solenoid valve.

[0004] By adopting the method of the present application, the rated flow rate can be calibrated by cooperating with the flow control unit and the valve seat. If the maximum valve opening flow rate of the valve needs to be changed, the piston or valve port size can be changed separately, thus achieving the effect of facilitating production.

[0005] The present application also provides a solenoid valve, comprising: a valve body component, an iron core component, and a piston component, wherein the valve body component comprises a valve seat, the valve seat comprises a valve mouth portion and a surrounding portion, the piston component comprises a piston body, a closing portion, and a flow control portion, the closing portion being located between the piston body and the flow control portion, and when the solenoid valve is in a valve-closing state, the closing portion abuts the valve mouth portion, and the iron core component abuts the piston body; when the solenoid valve is in a maximum valve-opening state, a flow control area is included between the surrounding portion and the flow control portion, and the flow control area can limit the maximum valve-opening flow of the solenoid valve.

[0006] By adopting the method of this application, a flow control area is formed between the flow control portion and the valve seat. This flow control area can limit the maximum opening flow rate of the solenoid valve. If the maximum opening flow rate of the valve is to be changed, the size of the flow control area can be changed by simply changing the piston or valve port size, thus achieving a convenient production effect.

[0007] Other features and advantages of the present specification will become apparent from the following detailed description of exemplary embodiments of the present specification with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the specification and, together with the description, serve to explain the principles of the specification.

[0009] Figure 1 This is a schematic diagram of the structure of the solenoid valve in the maximum valve opening state in the first embodiment of the present application;

[0010] Figure 2 yes Figure 1 A partial enlarged schematic diagram of position A in the middle;

[0011] Figure 3 yes Figure 1 Schematic diagram of the structure when the solenoid valve is in the closed state;

[0012] Figure 4 This is a partial structural diagram of the solenoid valve (with the flow control portion lengthened) in Example 2 of the present application;

[0013] Figure 5 This is a partial structural diagram of the solenoid valve (double-cone connection of the flow control part) in Example 3 of the present application;

[0014] Figure 6 It is a cross-sectional schematic diagram of a solenoid valve in the background technology.

[0015] Description of reference numerals:

[0016] 1. Solenoid valve;

[0017] 2. Valve body; 21. Valve seat; 211. Valve mouth; 212. Surrounding portion; 213. Connecting section; 214. Narrowing section; 215. Second straight section; 22. Valve body;

[0018] 3. Second takeover;

[0019] 4. First takeover;

[0020] 5. Iron core components;

[0021] 6. Piston component; 61. Piston body; 62. Closing portion; 63. Flow control portion; 631. First straight cylindrical section; 611. Large diameter section; 621. First tapered section; 622. Second tapered section;

[0022] 7. Flow control area;

[0023] 8. Rectification section. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0025] In an embodiment of the present application, a solenoid valve 1 is provided. Figure 1-4 As shown, the solenoid valve 1 includes a valve body 2, an iron core 5, and a piston 6. The valve body 2 includes a valve seat 21, which includes a valve opening 211 and a surrounding portion 212. The piston 6 includes a piston body 61, a closing portion 62, and a flow control portion 63. The closing portion 62 is located between the piston body 61 and the flow control portion 63. When the solenoid valve 1 is in the closed state, the closing portion 62 abuts the valve opening 211, and the iron core 5 abuts the piston body 61. When the solenoid valve 1 is in the maximum open state, the surrounding portion 212 surrounds at least a portion of the flow control portion 63 in the circumferential direction of the solenoid valve 1. In other words, a flow control region 7 is provided between the surrounding portion 212 and the flow control portion 63. The flow control region 7 can limit the maximum opening flow of the solenoid valve 1.

[0026] In this manner, the rated flow rate of the fluid flowing through the solenoid valve 1 can be calibrated by cooperating with the flow control portion 63 at the lower end of the piston and the surrounding portion 212 of the valve seat 21. During production, the maximum opening flow rate of the solenoid valve can be changed by simply changing the dimensions of the flow control portion 63 or the surrounding portion 212 of the valve seat 21. For example, for a large-caliber (large-size) solenoid valve, the rated flow rate can be calibrated by simply changing the structure of the piston component 6, that is, changing the outer diameter of the flow control portion 63. This allows a large-caliber solenoid valve to be used as a smaller-caliber (small-size) solenoid valve.

[0027] Further, such as Figure 2 As shown, the piston body 61 includes a large diameter section 611, the minimum outer diameter of the large diameter section 611 is larger than the maximum outer diameter of the flow control part 63, and the closing part 62 includes a first cone section 621, the outer diameter of the first cone section 621 gradually decreases along the longitudinal direction of the solenoid valve downward.

[0028] The first cone section 621 as the closing portion 62 can better cooperate with the valve seat 21 to reduce internal leakage, and at the same time serves as a connection between the large-diameter section 611 and the small-diameter section, facilitating production.

[0029] Furthermore, the outer side surface of the flow control portion 63 includes a first straight cylindrical section 631 . When the solenoid valve 1 is in the maximum valve opening state, the lowest point of the first straight cylindrical section 631 is lower than the highest point of the surrounding portion 212 .

[0030] The first straight cylindrical section 631 cooperates with the surrounding portion 212 of the valve seat 21 to calibrate flow and rectify the flow.

[0031] Furthermore, the inner wall of the surrounding portion 212 includes a second straight section 215. When the solenoid valve 1 is in the maximum valve opening state, the first straight section 631 cooperates with the second straight section 215 to form a rectifying section 8. The length of the rectifying section 8 is defined as d, which satisfies: d≥0.2mm.

[0032] The first straight tube section 631 cooperates with the second straight tube section 215 to enhance the rectifying effect and reduce fluid pressure loss.

[0033] Further, refer to Figure 1 、 Figure 2 As shown, the valve seat 21 includes a connecting section 213 and a narrowed section 214, and the valve body component 2 also includes a first connecting section 4 and a valve body 22. The connecting section 213 connects the first connecting section 4 and the valve body 22. The second straight section 215 and the valve mouth portion 211 are located in the narrowed section 214. When the solenoid valve 1 is in the maximum valve opening state, the iron core component 5 is attracted to the upper end of the valve body component 2.

[0034] The valve body 22 is connected to the first connecting pipe 4 by using the connecting section 213 of the valve seat 21, which can achieve the effect of convenient production. The second straight cylinder section 215 and the valve mouth section 211 are located in the necking section 214. During the production process, the size of the valve seat 21 can be easily adjusted separately, thereby controlling the maximum valve opening flow of the solenoid valve 1. The iron core component attracts the upper end of the valve body to make the solenoid valve operate reliably.

[0035] In the first embodiment and the second embodiment, as Figure 1-4 The first cone section 621 connects the large diameter section 611 and the flow control part 63. The first cone section 621 is located between the large diameter section 611 and the flow control part 63 to increase strength and facilitate production.

[0036] In the third embodiment, Figure 5 As shown, the closing portion 62 further includes a second tapered section 622, the outer diameter of which gradually increases downward along the longitudinal direction of the solenoid valve. The second tapered section 622 connects the first tapered section 621 and the flow control section 63, and is located between the first tapered section 621 and the flow control section 63. This allows the flow control section 63 to be a relatively independent part, facilitating targeted design based on system needs.

[0037] In the first embodiment of the present application, a solenoid valve is provided. Figure 1-4As shown, the solenoid valve includes: a valve body component 2, an iron core component 5, and a piston component 6. The valve body component 2 includes a valve seat 21, and the valve seat 21 includes a valve mouth portion 211 and a surrounding portion 212. The piston component 6 includes a piston body 61, a closing portion 62 and a flow control portion 63. The closing portion 62 is located between the piston body 61 and the flow control portion 63. When the solenoid valve 1 is in a valve-closing state, the closing portion 62 abuts the valve mouth portion 211, and the iron core component 5 abuts the piston body 61. When the solenoid valve 1 is in a maximum valve-opening state, a flow control area 7 is included between the surrounding portion 212 and the flow control portion 63. The flow control area 7 can limit the maximum valve-opening flow of the solenoid valve 1.

[0038] In this way, the flow control part 63 at the lower end of the piston can cooperate with the surrounding part 212 of the valve seat 21 to form a flow control area 7, and the rated flow of the liquid flowing through the solenoid valve can be calibrated. During the production process, the purpose of changing the flow of the solenoid valve during normal operation can be achieved by separately changing the size of the flow control part 63 or the surrounding part 212 of the valve seat 21.

[0039] In this article, "high and low", "up and down", and "vertical" correspond to the up and down directions of the drawings, among which "high" and "up" correspond to the top of the drawings, "low" and "down" correspond to the bottom of the drawings, and "horizontal" corresponds to the left and right directions of the drawings. Specific examples are used in this article to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method of this application and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of this application, several improvements and modifications can be made to this application, and these improvements and modifications also fall within the scope of protection of the claims of this application.

Claims

1. A solenoid valve (1), characterized in that: include: A valve body component (2), an iron core component (5), and a piston component (6), wherein the valve body component (2) includes a valve seat (21), the valve seat (21) includes a valve mouth portion (211) and a surrounding portion (212), the piston component (6) includes a piston body (61), a closing portion (62), and a flow control portion (63), the closing portion (62) being located between the piston body (61) and the flow control portion (63), and when the solenoid valve (1) is in a closed state, the closing portion (62) abuts against the valve mouth portion (211), and the iron core component (5) abuts against the piston body (61); when the solenoid valve (1) is in a maximum open state, the surrounding portion (212) is arranged to surround at least a portion of the flow control portion (63) in the circumferential direction of the solenoid valve (1).

2. The solenoid valve (1) according to claim 1, characterized in that The piston body (61) includes a large diameter section (611), the minimum outer diameter of the large diameter section (611) is greater than the maximum outer diameter of the flow control section (63), and the closing section (62) includes a first conical section (621), the outer diameter of the first conical section (621) gradually decreases downward along the longitudinal direction of the solenoid valve (1).

3. The solenoid valve (1) according to claim 2, characterized in that The outer side surface of the flow control portion (63) includes a first straight cylindrical section (631). When the solenoid valve (1) is in the maximum valve opening state, the lowest point of the first straight cylindrical section (631) is lower than the highest point of the surrounding portion (212).

4. The solenoid valve (1) according to claim 3, characterized in that The inner wall of the surrounding portion (212) includes a second straight-cylinder section (215). When the solenoid valve (1) is in the maximum valve opening state, the first straight-cylinder section (631) and the second straight-cylinder section (215) cooperate to form a rectifying section (8). The length of the rectifying section (8) is defined as d, and the following condition is satisfied: d≥0.2 mm.

5. The solenoid valve (1) according to claim 4, characterized in that The valve seat (21) includes a connecting section (213) and a narrowing section (214); the valve body component (2) also includes a first connecting section (4) and a valve body (22); the connecting section (213) connects the first connecting section (4) and the valve body (22); the second straight section (215) and the valve mouth (211) are located in the narrowing section (214); when the solenoid valve (1) is in the maximum valve opening state, the iron core component (5) is attracted to the upper end of the valve body component (2).

6. The solenoid valve (1) according to any one of claims 2 to 5, characterized in that: The first cone section (621) connects the large diameter section (611) and the flow control portion (63), and the first cone section (621) is located between the large diameter section (611) and the flow control portion (63).

7. The solenoid valve (1) according to any one of claims 2 to 5, characterized in that: The closing portion (62) further includes a second conical section (622), the outer diameter of which gradually increases downward along the longitudinal direction of the solenoid valve (1), and the second conical section (622) connects the first conical section (621) and the flow control section (63), and the second conical section (622) is located between the first conical section (621) and the flow control section (63).

8. A solenoid valve (1), characterized in that include: A valve body component (2), an iron core component (5), and a piston component (6), wherein the valve body component (2) includes a valve seat (21), the valve seat (21) includes a valve mouth portion (211) and a surrounding portion (212), the piston component (6) includes a piston body (61), a closing portion (62), and a flow control portion (63), the closing portion (62) being located between the piston body (61) and the flow control portion (63), and when the solenoid valve (1) is in a valve-closing state, the closing portion (62) abuts against the valve mouth portion (211), and the iron core component (5) abuts against the piston body (61); when the solenoid valve (1) is in a maximum valve-opening state, a flow control area (7) is included between the surrounding portion (212) and the flow control portion (63), and the flow control area (7) is capable of limiting the maximum valve-opening flow of the solenoid valve (1).

9. The solenoid valve (1) according to claim 8, characterized in that The piston body (61) includes a large diameter section (611), the minimum outer diameter of the large diameter section (611) is greater than the maximum outer diameter of the flow control section (63), the closing section (62) includes a first cone section (621), the outer diameter of the first cone section (621) gradually decreases along the longitudinal direction of the solenoid valve (1) downward, the first cone section (621) connects the large diameter section (611) and the flow control section (63), the first cone section (621) is located between the large diameter section (611) and the flow control section (63), the outer side surface of the flow control section (63) includes a first straight cylindrical section (631), and the inner wall of the surrounding section (212) includes a second straight cylindrical section (215 ), when the solenoid valve (1) is in the maximum valve opening state, the iron core component (5) is attracted to the upper end of the valve body component (2), and the first straight section (631) and the second straight section (215) cooperate to form a rectifying section (8), and the length of the rectifying section (8) is defined as d, then d≥0.2mm is satisfied, the valve seat (21) includes a connecting section (213) and a necking section (214), and the valve body component (2) also includes a first connecting section (4) and a valve body (22), the connecting section (213) connects the first connecting section (4) and the valve body (22), and the second straight section (215) and the valve mouth (211) are located in the necking section (214).

10. The solenoid valve (1) according to claim 8, characterized in that The piston body (61) includes a large diameter section (611), the minimum outer diameter of the large diameter section (611) is greater than the maximum outer diameter of the flow control section (63), the closing section (62) includes a first cone section (621), the outer diameter of the first cone section (621) gradually decreases along the longitudinal direction of the electromagnetic valve (1) downward, the closing section (62) also includes a second cone section (622), the outer diameter of the second cone section (622) gradually increases along the longitudinal direction of the electromagnetic valve (1) downward, the second cone section (622) connects the first cone section (621) and the flow control section (63), the second cone section (622) is located between the first cone section (621) and the flow control section (63), and the outer side surface of the flow control section (63) includes a first straight cylindrical section (621). 31), the inner wall of the surrounding portion (212) includes a second straight-cylinder section (215), when the solenoid valve (1) is in the maximum valve-opening state, the iron core component (5) is attracted to the upper end of the valve body component (2), the first straight-cylinder section (631) and the second straight-cylinder section (215) cooperate to form a rectifying section (8), and the length of the rectifying section (8) is defined as d, then it satisfies: d≥0.2mm, the valve seat (21) includes a connecting section (213) and a shrinking section (214), the valve body component (2) also includes a first connecting pipe (4) and a valve body (22), the connecting section (213) connects the first connecting pipe (4) and the valve body (22), and the second straight-cylinder section (215) and the valve mouth portion (211) are located in the shrinking section (214).

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