Two-position three-way electromagnetic valve

Abstract

The two-position three-way electromagnetic valve comprises a valve body and a pilot head installed on the valve body, the pilot head comprises a coil assembly installed on the valve body, a valve cavity is formed in the valve body, a valve element is arranged in the valve cavity in a sliding connection mode, the valve body is provided with an air inlet, a working opening and an air outlet, and the air inlet, the working opening and the air outlet are located on the same side. A mounting groove is formed in the valve body, the first connecting port, the working port and the second connecting port are communicated with the mounting groove, a valve plate is mounted on the valve body, an air inlet, an air vent and an air outlet are formed in the valve plate, a retainer is detachably mounted in the mounting groove, and the retainer has a first mounting direction and a second mounting direction; the electromagnetic valve has the advantages that the functions of the first connecting port and the second connecting port are changed by changing the mounting direction between the retainer and the valve body, so that the electromagnetic valve can meet different working conditions.

Description

TECHNICAL FIELD

[0001] The utility model relates to solenoid valve technical field, especially two -way three -way solenoid valve. BACKGROUND

[0002] Solenoid valve is used to control fluid automation basic element, belongs to control element, and is not limited to hydraulic, pneumatic. It is widely used in industrial control system, and solenoid valve cooperates circuit to control the direction, flow, speed and other parameters of medium.

[0003] Through the retrieval, China utility model patent (grant announcement number: CN222811282U) provides a bottom connection type solenoid valve, and from the application, it can be obtained that the prior art installs static core in the bushing, and the static core is provided with an abutting plate, the abutting plate is pushed by the second spring between the abutting plate and the bushing to cooperate with the abutting portion in the valve cavity, so as to realize the function of fixing the static core, and the installation is more convenient, and the movement of the first moving core, the second moving core and the valve core can be manually pushed through the through hole, and the function of manual debugging is realized.

[0004] The above prior art has the following defects: the positions of the gas inlet and the gas outlet are fixed, so that when different working conditions are dealt with, the solenoid valve needs to be replaced to meet the requirements of the corresponding working conditions, and the functionality is poor, so the defect needs to be improved. UTILITY MODEL CONTENT

[0005] The utility model aims at the above problems, and provides a two -way three -way solenoid valve, which has the advantages that the valve plate and the solenoid valve remain unchanged, the retaining ring installation direction is changed, and the valve body gas inlet hole and gas outlet hole functions can be changed.

[0006] To achieve the above object, the utility model provides the following technical scheme: a two -way three -way solenoid valve, including valve body and the pilot head of being installed on the valve body, the pilot head includes the coil assembly of being installed on the valve body, the valve body has the valve cavity, the valve core is slidably connected in the valve cavity, the valve body has the first connecting port, the working port and the second connecting port on the same side, the valve body is equipped with the installation groove, the first connecting port, the working port and the second connecting port communicate with the installation groove, the valve body is installed with the valve plate, the valve plate is equipped with the gas inlet, the air vent and the gas outlet, the installation groove is detachably installed with the retaining ring, the retaining ring has the first installation direction and the second installation direction, the retaining ring has the first gas connection, the second gas connection and the third gas connection;

[0007] When the holder is installed into the installation slot through the first installation direction, the first connecting port is communicated with the air inlet on the valve plate through the first air connecting port, the working port is communicated with the air passage on the valve plate through the second air connecting port, and the air outlet is communicated with the air outlet on the valve plate through the third air connecting port.

[0008] When the holder is installed into the installation slot through the second installation direction, the air inlet is communicated with the air outlet on the valve plate through the first air connecting port, the working port is communicated with the air passage on the valve plate through the second air connecting port, and the air outlet is communicated with the air inlet on the valve plate through the third air connecting port.

[0009] Preferably, the first plate connecting pad is installed on the holder in the first installation direction, and the second plate connecting pad is installed on the holder in the second installation direction.

[0010] Preferably, the first air connecting port and the third air connecting port are waist-shaped holes.

[0011] Preferably, a first moving iron core is slidably arranged in the coil assembly, a static iron core is arranged between the pilot head and the valve body, the static iron core is arranged below the first moving iron core, a second moving iron core is arranged in the static iron core, the second moving iron core penetrates above the static iron core, the lower end of the second moving iron core abuts against the upper end of the valve core, the first moving iron core has a spring cavity, the second moving iron core penetrates into the spring cavity of the first moving iron core, a spring seat is arranged in the spring cavity, the bottom of the spring seat abuts against the upper end of the second moving iron core, a first spring is arranged between the spring seat and the upper end of the spring cavity, the first spring always has a tendency to push the spring seat to move towards the side close to the static iron core, and a second spring is arranged between the valve core and the bottom of the valve cavity, the second spring always has a tendency to push the valve core to move towards the side close to the static iron core.

[0012] Preferably, an adjusting nut is threadedly connected to the upper end of the spring cavity, and the first spring is arranged between the adjusting nut and the spring seat.

[0013] Preferably, a through hole is arranged at the upper end of the pilot head, and a rubber pad is arranged in the through hole.

[0014] Preferably, the valve cavity is provided with a first bushing and a second bushing, the first bushing is provided with an upper valve port, the second bushing is provided with a lower valve port, the middle part of the valve core is provided with a sealing ring in sealing cooperation with the upper valve port and the lower valve port, the first bushing is provided with a first through hole in communication with the first connecting port, the second bushing is provided with a second through hole in communication with the second connecting port, when the sealing ring cooperates with the upper valve port, the first connecting port is in communication with the working port, and the second connecting port is cut off from the working port.

[0015] When the sealing ring cooperates with the lower valve port, the first connecting port is cut off from the working port, and the second connecting port is cut off from the working port.

[0016] Preferably, the upper valve port and the lower valve port are in the shape of a "crater".

[0017] Preferably, the first bushing and the second bushing are both provided with a first sealing ring in sealing cooperation with the inner wall of the valve cavity.

[0018] Preferably, the bottom of the valve body is provided with a bottom cover for sealing the bottom of the valve cavity.

[0019] Compared with the prior art, the utility model has the advantages of the following:

[0020] The two-position three-way electromagnetic valve can change the installation direction between the retainer and the valve body without changing the valve plate and the electromagnetic valve, thereby changing the functions of the first connecting port and the second connecting port, so that when the retainer is installed on the valve body in the first installation direction, the first connecting port is an air inlet hole and the second connecting port is an air outlet hole, and when the retainer is installed on the valve body in the second installation direction, the first connecting port is an air outlet hole and the second connecting port is an air inlet hole, so that the electromagnetic valve can meet different working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0022] Figure 2 It is a sectional structure schematic view of the utility model;

[0023] Figure 3 It is a cooperation schematic view between the retainer installed on the valve body in the first direction and the valve plate;

[0024] Figure 4 It is a cooperation schematic view between the retainer installed on the valve body in the second direction and the valve plate.

[0025] Figure Descriptions: 1. Valve body; 10. Mounting groove; 101. First connection port; 102. Working port; 103. Second connection port; 11. First bushing; 110. First through hole; 111. Upper valve port; 12. Second bushing; 120. Second through hole; 121. Lower valve port; 13. First sealing ring; 14. Bottom cover; 15. Second spring; 16. Second sealing ring; 17. Third sealing ring; 2. Pilot head; 21. Stationary iron core; 22. 220. First moving iron core; 221. Spring cavity; 222. Spring seat; 223. Adjusting nut; 224. Rubber pad; 25. Second moving iron core; 26. First spring; 27. Valve core; 28. Sealing ring; 3. Coil assembly; 4. Cage; 41. First air inlet; 42. Second air inlet; 43. Third air inlet; 44. First plate gasket; 45. Second plate gasket; 56. Valve plate; 57. Air inlet; 58. Vent; 59. Air outlet. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figure 1 - Figure 4 As shown, a two-position three-way solenoid valve includes a valve body 1 and a pilot head 2 mounted on the valve body 1. The pilot head 2 includes a coil assembly 3 mounted on the valve body 1. The valve body 1 has a valve cavity, and a valve core 25 is slidably connected in the valve cavity. The valve body 1 has a first connection port 101, a working port 102, and a second connection port 103 located on the same side. The valve body 1 has a mounting groove 10, and the first connection port 101, the working port 102, and the second connection port 103 communicate with the mounting groove 10. A valve plate 5 is mounted on the valve body 1. The valve plate 5 has an air inlet 51, an air vent 52, and an air outlet 53. A retainer 4 is detachably mounted in the mounting groove 10. The retainer 4 has a first mounting direction and a second mounting direction. The retainer 4 has a first air inlet 41, a second air inlet 42, and a third air inlet 43.

[0028] When the retainer 4 is installed into the mounting groove 10 in the first mounting direction, the first connection port 101 is connected to the air inlet 51 on the valve plate 5 through the first air inlet 41, the working port 102 is connected to the air outlet 52 on the valve plate 5 through the second air inlet 42, and the air outlet 53 is connected to the air outlet 53 on the valve plate 5 through the third air inlet 43.

[0029] When the holder 4 is installed into the installation slot 10 through the second installation direction, the air inlet 51 is communicated with the air outlet 53 on the valve plate 5 through the first air connection port 41, the working port 102 is communicated with the air passage 52 on the valve plate 5 through the second air connection port 42, and the air outlet 53 is communicated with the air inlet 51 on the valve plate 5 through the third air connection port 43.

[0030] The first plate connection pad 44 is installed on the holder 4 in the first installation direction, and the second plate connection pad 45 is installed on the holder 4 in the second installation direction, which are used as sealing pads. In addition, the first air connection port 41 and the third air connection port 43 are waist-shaped holes.

[0031] The first moving iron core 22 is slidably arranged in the coil assembly 3, the static iron core 21 is arranged between the pilot head 2 and the valve body 1, the static iron core 21 is arranged below the first moving iron core 22, the second moving iron core 23 is arranged in the static iron core 21, the second moving iron core 23 penetrates the static iron core 21 and is arranged above the static iron core 21, the lower end of the second moving iron core 23 abuts against the upper end of the valve core 25, the first moving iron core 22 has a spring cavity 220, the second moving iron core 23 penetrates into the spring cavity 220 of the first moving iron core 22, a spring seat 221 is arranged in the spring cavity 220, the bottom of the spring seat 221 abuts against the upper end of the second moving iron core 23, a first spring 24 is arranged between the spring seat 221 and the upper end of the spring cavity 220, the first spring 24 always has a tendency to push the spring seat 221 to move towards the side close to the static iron core 21, and a second spring 15 is arranged between the valve core 25 and the bottom of the valve cavity, which always has a tendency to push the valve core 25 to move towards the side close to the static iron core 21.

[0032] The upper end of the spring cavity 220 is threadedly connected with an adjusting nut 222, the first spring 24 is arranged between the adjusting nut 222 and the spring seat 221, and the adjusting nut 222 can be rotated to adjust the elastic force of the first spring 24 on the spring seat 221.

[0033] A through hole is arranged at the upper end of the pilot head 2, and a rubber pad 223 is arranged in the through hole, so that the first moving iron core 22 and the second moving iron core 23 can be manually pushed to move.

[0034] The valve cavity is provided with a first bushing 11 and a second bushing 12, the first bushing 11 is provided with an upper valve port 111, the second bushing 12 is provided with a lower valve port 121, the valve core 25 is provided with a sealing ring 251 which is in sealing cooperation with the upper valve port 111 and the lower valve port 121, the first bushing 11 is provided with a first through hole 110 which is in communication with the first connecting port 101, the second bushing 12 is provided with a second through hole 120 which is in communication with the second connecting port 103;

[0035] When the sealing ring 251 cooperates with the upper valve port 111, the first connecting port 101 is in communication with the working port 102, and the second connecting port 103 is cut off from the working port 102;

[0036] When the sealing ring 251 cooperates with the lower valve port 121, the first connecting port 101 is cut off from the working port 102, and the second connecting port 103 is cut off from the working port 102.

[0037] The upper valve port 111 and the lower valve port 121 are in the shape of a "crater", which can provide more reliable sealing effect.

[0038] The first bushing 11 and the second bushing 12 are both provided with a first sealing ring 13 which is in sealing cooperation with the inner wall of the valve cavity.

[0039] The valve core 25 is provided with a second sealing ring 16 which is in sealing cooperation with the inner wall of the first bushing 11, and a third sealing ring 17 which is in sealing cooperation with the inner wall of the second bushing 12.

[0040] The bottom of the valve body 1 is provided with a bottom cover 14 which is used to close the bottom of the valve cavity.

[0041] The valve cavity is provided with a first step and a second step, the first step is in limiting cooperation with the lower end of the first bushing 11, and the second step is in limiting cooperation with the upper end of the second bushing 12.

[0042] The first method for assembling the valve body 1: the valve cavity is provided with an upper inlet and a lower inlet, first, the first bushing 11 is put into the valve cavity through the upper inlet, at this time, the lower end of the first bushing 11 is in limiting cooperation with the first step, so as to realize the positioning installation of the first bushing 11. Then, the valve core 25 is inserted into the valve cavity through the lower inlet. Next, the second bushing 12 is inserted into the valve cavity through the lower inlet, and the upper end of the second bushing 12 is in limiting cooperation with the second step, so as to realize the positioning installation of the second bushing 12, and then realize the positioning installation of the valve core 25 through the first bushing 11 and the second bushing 12. Finally, the bottom cover 14 and the pilot head 2 are installed, and the assembly of the valve body 1 is completed.

[0043] The second method of assembling the valve body 1 is to insert the second bushing 12 into the valve cavity from the lower inlet of the valve cavity, and the lower end of the second bushing 12 is limited by the second step to achieve the positioning installation of the second bushing 12. Then, the valve core 25 is inserted into the valve cavity from the upper inlet of the valve cavity. Next, the first bushing 11 is inserted into the valve cavity from the upper inlet, and the lower end of the first bushing 11 is limited by the second step to achieve the positioning installation of the first bushing 11, and the valve core 25 is positioned and installed through the first bushing 11 and the second bushing 12. Finally, the bottom cover 14 and the pilot head 2 are installed to complete the assembly of the valve body 1.

[0044] The working principle of the present application is that the positions of the air inlet 51, the air vent 52 and the air outlet 53 on the valve plate 5 are fixed, and the functions of the first connecting port 101 and the second connecting port 103 are changed by changing the installation direction of the retainer 4.

[0045] When the retainer 4 is installed on the valve body 1 in the first installation direction, the first connecting port 101 serves as an air inlet, and the second connecting port 103 serves as an air outlet.

[0046] When the coil assembly 3 is powered off, the sealing ring 251 is in sealing cooperation with the upper valve port 111, the working port 102 is in communication with the second connecting port 103, and the working port 102 is cut off from the first connecting port 101, because the second spring 15 always has a tendency to push the valve core 25 to move close to the static iron core 21.

[0047] When the coil assembly 3 is powered on, the static iron core 21 obtains magnetic force, the first moving iron core 22 moves downward, the second moving iron core 23 moves downward, the valve core 25 moves downward, the sealing ring 251 is in sealing cooperation with the lower valve port 121, the first connecting port 101 is in communication with the working port 102, and the second connecting port 103 is cut off from the working port 102.

[0048] When the retainer 4 is installed on the valve body 1 in the second installation direction, the first connecting port 101 serves as an air outlet, and the second connecting port 103 serves as an air inlet.

[0049] When the coil assembly 3 is powered off, the sealing ring 251 is in sealing cooperation with the upper valve port 111, the working port 102 is in communication with the second connecting port 103, and the working port 102 is cut off from the first connecting port 101, because the second spring 15 always has a tendency to push the valve core 25 to move close to the static iron core 21.

[0050] When the coil assembly 3 is energized, the static iron core 21 obtains magnetic force, at this time the first moving iron core 22 moves downward, in turn drives the second moving iron core 23 to move downward, in turn pushes the valve core 25 to move downward, so that the sealing ring 251 is sealed with the lower valve port 121, at this time the first connecting port 101 is communicated with the working port 102, and the second connecting port 103 is cut off with the working port 102.

[0051] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0052] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A two-position three-way solenoid valve, comprising a valve body (1) and a pilot head (2) mounted on the valve body (1), the pilot head (2) comprising a coil assembly (3) mounted on the valve body (1), the valve body (1) having a valve cavity, a valve core (25) slidably connected within the valve cavity, the valve body (1) having a first connection port (101), a working port (102), and a second connection port (103) located on the same side, characterized in that: The valve body (1) is provided with a mounting groove (10), the first connecting port (101), the working port (102) and the second connecting port (103) are communicated with the mounting groove (10), the valve body (1) is provided with a valve plate (5), the valve plate (5) is provided with an air inlet (51), an air vent (52) and an air outlet (53), the mounting groove (10) is detachably provided with a retainer (4), the retainer (4) has a first installation direction and a second installation direction, the retainer (4) is provided with a first air connection port (41), a second air connection port (42) and a third air connection port (43); When the retainer (4) is installed into the mounting groove (10) through the first installation direction, the first connecting port (101) is communicated with the air inlet (51) on the valve plate (5) through the first air connection port (41), the working port (102) is communicated with the air vent (52) on the valve plate (5) through the second air connection port (42), and the air outlet (53) is communicated with the air outlet (53) on the valve plate (5) through the third air connection port (43); When the retainer (4) is installed into the mounting groove (10) through the second installation direction, the air inlet (51) is communicated with the air outlet (53) on the valve plate (5) through the first air connection port (41), the working port (102) is communicated with the air vent (52) on the valve plate (5) through the second air connection port (42), and the air outlet (53) is communicated with the air inlet (51) on the valve plate (5) through the third air connection port (43).

2. A two-position three-way solenoid valve according to claim 1, characterized in that: The retainer (4) is provided with a first plate connecting pad (44) in the first installation direction, and is provided with a second plate connecting pad (45) in the second installation direction.

3. A two-position three-way solenoid valve according to claim 1, characterized in that: The first air connection port (41) and the third air connection port (43) are waist-shaped holes.

4. A two-position three-way solenoid valve according to claim 1, characterized in that: The first moving iron core (22) is slidably arranged in the coil assembly (3), the static iron core (21) is arranged between the pilot head (2) and the valve body (1), the static iron core (21) is arranged below the first moving iron core (22), the second moving iron core (23) is arranged in the static iron core (21), the second moving iron core (23) penetrates to above the static iron core (21), the lower end of the second moving iron core (23) abuts against the upper end of the valve core (25), the first moving iron core (22) has a spring cavity (220), the second moving iron core (23) penetrates into the spring cavity (220) of the first moving iron core (22), the spring cavity (220) is provided with a spring seat (221), the bottom of the spring seat (221) abuts against the upper end of the second moving iron core (23), the first spring (24) is arranged between the spring seat (221) and the upper end of the spring cavity (220), the first spring (24) always has a tendency to push the spring seat (221) to move to the side close to the static iron core (21), the second spring (15) is arranged between the valve core (25) and the bottom of the valve cavity, and the second spring (15) always has a tendency to push the valve core (25) to move to the side close to the static iron core (21).

5. A two-position three-way solenoid valve according to claim 4, characterized in that: The upper end of the spring cavity (220) is threadedly connected with an adjusting nut (222), and the first spring (24) is arranged between the adjusting nut (222) and the spring seat (221).

6. A two-position three-way solenoid valve according to claim 4, characterized in that: The upper end of the pilot head (2) is provided with a through hole, and a rubber pad (223) is arranged in the through hole.

7. A two-position, three-way solenoid valve as defined in claim 4 wherein: The first bushing (11) and the second bushing (12) are arranged in the valve cavity, the first bushing (11) is provided with an upper valve port (111), the second bushing (12) is provided with a lower valve port (121), the valve core (25) is provided with a sealing ring (251) which is in sealing connection with the upper valve port (111) and the lower valve port (121), the first bushing (11) is provided with a first through hole (110) which is in communication with the first connecting port (101), the second bushing (12) is provided with a second through hole (120) which is in communication with the second connecting port (103), when the sealing ring (251) is in connection with the upper valve port (111), the first connecting port (101) is in communication with the working port (102), and the second connecting port (103) is cut off from the working port (102); When the sealing ring (251) is in connection with the lower valve port (121), the first connecting port (101) is cut off from the working port (102), and the second connecting port (103) is cut off from the working port (102).

8. A two-position three-way solenoid valve according to claim 7, characterized in that: The upper valve port (111) and the lower valve port (121) are in the shape of a "volcano".

9. A two-position, three-way solenoid valve as defined in claim 7, wherein: The first bushing (11) and the second bushing (12) are provided with first sealing rings (13) which are in sealing connection with the inner wall of the valve cavity.

10. A two-position three-way solenoid valve according to claim 1, characterized in that: The bottom of the valve body (1) is provided with a bottom cover (14) which is used for sealing the bottom of the valve cavity.

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