Plug-in mounting type self-locking two-position three-way electromagnetic valve

Abstract

The utility model discloses a plug-in mounting type self-locking two-position three-way electromagnetic valve which comprises a protective cover, an upper touch plate, an ejector rod, a second microswitch, a return spring, a lower touch plate, a coil II, magnetic steel, a coil I, a shell, a screw plug, a valve spring, a lower valve, an upper valve, an auxiliary spring, a first coil lower end, a pin, an armature, a second coil lower end, a coil shell, an ejector sleeve and a first microswitch. Two groups of coils are adopted to switch working states, and the armature is kept at a fixed position under the action of a magnetic field generated by the magnetic steel. A product channel is of a combined valve structure, and switching of gas circuits in different working states is achieved through armature movement and spring reset. In order to adapt to self-locking, an auxiliary spring and a stroke gap are additionally arranged between the armature and the valve for compensation, and the sealing reliability is guaranteed. And conical surface sealing and plane sealing are adopted for product sealing, FM-1D is adopted as a sealing material, and the zero leakage rate is achieved. The product feeds back different working states through a ground switch signal output by the microswitch.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of self-locking control, in particular to a plug-in self-locking two-position three-way electromagnetic valve for switching gas circuit and keeping different working states. BACKGROUND

[0002] The self-locking two-position three-way electromagnetic valve keeps the valve in a fixed position without constant power supply, is an ideal choice for low cycle rate application, but also can provide benefits for cycle rate with lock time exceeding unlock time, reduce energy consumption, provide greater flexibility for electromagnetic valve power supply, and produce little heat. At present, conventional electromagnetic valves and electric motors can switch working states and realize long-time keeping, but the conventional electromagnetic valve has serious coil heating and large power consumption during long-time work, and the electric motor has complex structure, high cost and low universality. UTILITY MODEL CONTENTS

[0003] The utility model discloses a plug-in self-locking two-position three-way electromagnetic valve for switching gas circuit and keeping different working states, reducing energy consumption and improving universality. It is a plug-in self-locking two-position three-way electromagnetic valve with compact structure, convenient assembly, high reliability, strong universality and the ability to keep working state.

[0004] The utility model discloses a kind of plug-in self-locking two-position three-way solenoid valves, including protective cover, upper contact plate, ejector rod, microswitch two, return spring, lower contact plate, coil II, magnetic steel, coil I, shell, screw plug, valve spring, lower valve, upper valve, auxiliary spring, coil lower end one, peg, armature, coil lower end two, coil shell, top sleeve, microswitch one, wherein coil II, coil I is respectively placed in hollow cylindrical structure which is formed in the both ends of magnetic steel, coil lower end one and coil lower end two are all convex structure, wherein the small diameter end of coil lower end one is sleeved in the inside of coil I end, the small diameter end of coil lower end two is sleeved in the inside of coil II end, the armature is placed between coil lower end one and coil lower end two and is connected with magnetic steel, coil lower end one is provided with through hole along axial direction, and one end of upper valve passes through, the recess is provided in magnetic steel close to coil lower end one along axial direction, so that upper valve is extended and fixed, the slot is provided in magnetic steel close to coil lower end one radially, and peg passes through to fix upper valve, auxiliary spring is equipped between upper valve and the large diameter end of coil lower end one, the axial section of coil shell is H-shaped hollow cylindrical structure, and one end is sleeved in the outside of columnar structure which is formed by coil II, coil I, coil lower end one and coil lower end two, the shell is hollow structure, one end of the shell is placed in the outside of upper valve, and end surface contacts with the end surface of coil shell close to coil lower end one, the other end inside is provided with thread and is connected with the outer thread of screw plug, lower valve is placed between upper valve and screw plug and contacts with the end surface of upper valve, valve spring is equipped between lower valve and screw plug, the lower contact plate is convex structure, and return spring is sleeved in the small diameter end, and one end of return spring abuts against the large diameter end of lower contact plate, the other end of return spring abuts against the end surface of one end of top sleeve, through hole is provided in top sleeve along axial direction center, and top rod passes through, two sides of top sleeve are connected with microswitch two and microswitch one respectively, the outermost end of top rod is connected with upper contact plate, the upper contact plate can contact with microswitch one, the lower contact plate can contact with microswitch two, one end of protective cover is sealed, and the other end contacts with the end surface of coil shell and is sealed.

[0005] The middle part of the inside of the shell is provided with convex ring, the convex ring is radially provided with A mouth, the position between the coil shell and the shell is provided with T mouth, the center of the screw plug is axially provided with P mouth, and the outside of the shell is provided with external thread.

[0006] Conical surface sealing is used at the contact place of the shell and lower valve and upper valve, and sealing element is arranged at the contact place of lower valve and upper valve, and FM-1D sealing material is used for the sealing element. Welding connection is used between coil II and magnetic steel and between coil I and magnetic steel.

[0007] The working state is switched by energizing different coils by pulse voltage, and the working state is maintained without constant power supply, when in working state I, P port is communicated with A port, micro switch 1 outputs ground opening signal to represent the working state, when in working state II, A port is communicated with T port, micro switch 2 outputs ground opening signal to represent the working state.

[0008] Two groups of coils are adopted to switch the working state, and the armature is kept in a fixed position under the action of the magnetic field generated by the magnetic steel.

[0009] The beneficial effects of the utility model are as follows:

[0010] 1. Two groups of coils are adopted to switch the working state, and the armature is kept in a fixed position under the action of the magnetic field generated by the magnetic steel.

[0011] 2. The product channel adopts a combined valve structure, and the air path conversion between different working states is realized through the movement of the armature and the spring reset.

[0012] 3. In order to adapt to self-locking, an auxiliary spring and a stroke gap are added between the armature and the valve to compensate and ensure the sealing reliability.

[0013] 4. The product sealing adopts conical sealing and plane sealing, and the sealing material adopts FM-1D.

[0014] 5. The product feedbacks different working states through the ground opening signal output by the micro switch.

[0015] 6. The interface is designed as a threaded plug-in type, which is convenient to install and disassemble, and is strong in generalization. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings incorporated in the description and forming a part of the description, show the embodiments consistent with the utility model, and are used together with the description to explain the principle of the utility model. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.

[0017] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0018] In the description of the present application, it is to be understood by those skilled in the art that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" and the like can be explicitly or implicitly included one or more. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0019] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood through specific circumstances.

[0020] Figure 1 A working state structure schematic view of the plug-in type self-locking two-position three-way electromagnetic valve provided by the present application is provided.

[0021] Figure 2 Another working state structure schematic view of the plug-in type self-locking two-position three-way electromagnetic valve provided by the present application is provided.

[0022] In the drawings:

[0023] 1-protective cover, 2-upper touch plate, 3-top rod, 4-micro switch 2, 5-return spring, 6-lower touch plate, 7-coil II, 8-magnetic steel, 9-coil I, 10-housing, 11-screw plug, 12-valve spring, 13-lower valve, 14-upper valve, 15-assistant spring, 16-coil lower end, 17-pin, 18-armature, 19-coil lower end, 20-coil shell, 21-top sleeve, 22-micro switch 1, 101-convex ring, 102-external thread. DETAILED DESCRIPTION

[0024] Example implementations are now described with reference to the drawings. Example implementations can, however, be implemented in many different forms and should not be construed as limited to the examples set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the inventive concept to those skilled in the art.

[0025] Referring now to the drawings, in which like numerals refer to similar components throughout the several figures, aspects of the present disclosure are depicted. Figure 1, the utility model provides a structure schematic diagram of plug -in type self -locking two position three way solenoid valve is provided, including protection cover 1, upper touch plate 2, top rod 3, micro -switch two 4, return spring 5, lower touch plate 6, coil II 7, magnetic steel 8, coil I 9, shell 10, screw plug 11, valve spring 12, lower valve 13, upper valve 14, auxiliary spring 15, coil lower end one 16, peg 17, armature 18, coil lower end two 19, coil shell 20, top sleeve 21, micro -switch one 22, wherein coil II 7, coil I 9 are placed in hollow cylindrical structure respectively in both ends of magnetic steel 8, coil lower end one 16 and coil lower end two 19 are all convex structure, wherein coil lower end one 16 small diameter end is set in the inside of coil I 9 end, and coil lower end two 19 small diameter end is set in the inside of coil II 7 end, armature 18 is placed between coil lower end one 16 and coil lower end two 19 and is connected with magnetic steel 8, and coil lower end one 16 is provided with through -hole along the axial direction and passes through one end of upper valve 14, magnetic steel 8 is provided with recess along the axial direction close to coil lower end one 16 and makes upper valve 14 extend fixed, magnetic steel 8 is provided with groove along the radial direction close to coil lower end one 16 and passes through peg 17 to fix upper valve 14, upper valve 14 and coil lower end one 16 large diameter end are equipped with auxiliary spring 15, coil shell 20 axial section is H type hollow cylindrical structure, and one end is set in the cylindrical outside of coil II 7, coil I 9, coil lower end one 16 and coil lower end two 19, shell 10 is hollow structure, one end of shell 10 is placed in the outside of upper valve 14, and end surface and coil shell 20 close to coil lower end one 16 end surface contact, and the other end inside is equipped with screw thread and is connected with the outer screw thread of screw plug 11, lower valve 13 is placed between upper valve 14 and screw plug 11 and contacts with upper valve 14 end surface, and lower valve 13 and screw plug 11 are equipped with valve spring 12, lower touch plate 6 is convex structure, and small diameter end is equipped with return spring 5, and one end of return spring 5 abuts against lower touch plate 6 large diameter end, the other end of return spring 5 abuts against one end surface of top sleeve 21, and top sleeve 21 is provided with through -hole along the axial center and passes through top rod 3, both sides of top sleeve 21 are connected with micro -switch two 4 and micro -switch one 22 respectively, the outermost end of top rod 3 is connected with upper touch plate 2, upper touch plate 2 can contact with micro -switch one 22, lower touch plate 6 can contact with micro -switch two 4, one end of protection cover 1 is sealed, and the other end contacts with the end surface of coil shell 20 and is sealed, the outside of shell 10 is equipped with external thread 102 to facilitate connection, and the interface is designed as threaded plug -in type, and it is convenient to install and remove, and the generalization is strong.

[0026] The inside middle part of shell 10 is equipped with convex ring 101, and convex ring 101 is provided with A mouth along the radial direction, the position between coil shell 20 and shell 10 is equipped with T mouth, and the center of screw plug 11 is provided with P mouth along the axial direction.

[0027] The contact between the shell 10 and the lower valve 13, the upper valve 14 adopts the taper seal, the lower valve 13 and the upper valve 14 are provided with sealing elements at the contact, and the sealing element adopts FM-1D sealing material.

[0028] The self-locking two-position three-way electromagnetic valve has two working states:

[0029] Working state I: that is, the "A port" and the "P port" are communicated;

[0030] Working state II: that is, the "A port" and the "T port" are communicated.

[0031] The pulse voltage is given to the coil I, the switching is switched to the working state I, the ground opening signal feedback state I state of the micro switch one 22 is output, the pulse voltage is given to the coil 117, the switching is switched to the working state II, and the ground opening signal feedback state II state of the micro switch two 4 is output.

[0032] 1) State I switching state II: see Figure 1 , the product is in state I, the pulse voltage is given to the coil II, the armature 18 drives the upper valve 14 to move left under the action of electromagnetic force, the "A port" and the "T port" are communicated, and the lower valve 13 is reset under the action of the valve spring 12, the "A port" and the "P port" are cut off, the armature 18 continues to keep the state of being attracted to the lower end 19 of the coil under the action of the magnetic field generated by the magnetic steel 8, and the upper valve 14 keeps opening. In the switching process, the armature 18 pushes the top rod 3 to drive the lower contact plate 6 to touch the micro switch two 4, and the micro switch two 4 outputs the signal feedback state II (as shown in Figure 2 ).

[0033] 2) State II switching state I: see Figure 2 , the product is in state II, the pulse voltage is given to the coil I 9, the armature 18 pushes the upper valve 14 to move right under the action of electromagnetic force, the "A port" and the "T port" are cut off, the lower valve 13 is separated from the shell 10, the "A port" and the "P port" are communicated, the armature 18 continues to keep the state of being attracted to the lower end 16 of the coil under the action of the magnetic field generated by the magnetic steel 8, and the lower valve 13 keeps opening. In the switching process, the armature 18 is separated from the top rod 3, the top rod 3 is reset under the action of the return spring 5, the upper contact plate 2 touches the micro switch one 22, and the micro switch one 22 outputs the signal feedback state I (as shown in Figure 1 ). The conversion of the gas circuit between different working states is realized, the auxiliary spring and the stroke gap are added between the armature and the valve for compensation, and the sealing reliability is ensured.

[0034] The above examples are only used to illustrate the technical solutions of the present application and not to limit the present application, and any modification or equivalent replacement to the technical solutions of the present application made by those skilled in the art shall be covered in the scope of the claims of the present application, without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A plug-in type self-locking two-position three-way solenoid valve, characterized by: The utility model relates to a kind of microswitches, including protective cover (1), upper touch plate (2), top rod (3), microswitch two (4), return spring (5), lower touch plate (6), coil II (7), magnetic steel (8), coil I (9), shell (10), screw plug (11), valve spring (12), lower valve (13), upper valve (14), auxiliary spring (15), coil lower end one (16), pin (17), armature (18), coil lower end two (19), coil shell (20), top sleeve (21), microswitch one (22), wherein coil II (7), coil I (9) are respectively placed in magnetic steel (8) both ends and constitute hollow columnar structure, coil lower end one (16) and coil lower end two (19) are all convex structure, wherein the small diameter end of coil lower end one (16) is sleeved in the inside of coil I (9) end, and the small diameter end of coil lower end two (19) is sleeved in the inside of coil II (7) end, the armature (18) is placed between coil lower end one (16) and coil lower end two (19) and is connected with magnetic steel (8), and coil lower end one (16) is provided with through hole along axial direction, and one end of upper valve (14) is passed through, the recess is opened in magnetic steel (8) close to coil lower end one (16) along axial direction, so that upper valve (14) is extended and fixed, the slot is opened in magnetic steel (8) close to coil lower end one (16) along diameter direction, and pin (17) is passed through, so that upper valve (14) is fixed, auxiliary spring (15) is arranged between upper valve (14) and the large diameter end of coil lower end one (16), the axial section of coil shell (20) is H type hollow columnar structure, and one end is sleeved in the columnar outside formed by coil II (7), coil I (9), coil lower end one (16) and coil lower end two (19), the shell (10) is hollow structure, one end of the shell (10) is placed in the outside of upper valve (14), and end face is in contact with the end face of coil shell (20) close to coil lower end one (16), the other end inside is provided with thread and is connected with the outer thread of screw plug (11) cooperation, lower valve (13) is placed between upper valve (14) and screw plug (11) and is in contact with the end face of upper valve (14), valve spring (12) is arranged between lower valve (13) and screw plug (11), lower touch plate (6) is convex structure, and return spring (5) is sleeved in the small diameter end, and one end of return spring (5) is against the large diameter end of lower touch plate (6), the other end of return spring (5) is against the end face of one end of top sleeve (21), and top sleeve (21) is provided with through hole along axial center, and top rod (3) is passed through, the two sides of top sleeve (21) are connected with microswitch two (4) and microswitch one (22) respectively, the outermost end of top rod (3) is connected with upper touch plate (2), upper touch plate (2) can be in contact with microswitch one (22), lower touch plate (6) can be in contact with microswitch two (4), protective cover (1) one end seals the other end and is in contact with the end face of coil shell (20) seal, the inside middle part of shell (10) is provided with convex ring (101), convex ring (101) is provided with A mouth along diameter direction,The T-shaped port is arranged between the coil shell (20) and the shell (10), the P-shaped port is arranged in the center of the screw plug (11) in the axial direction, and an outer thread (102) is arranged on the outer side of the shell (10).

2. The plug-in solenoid valve according to claim 1, characterized in that: The housing (10) is in contact with the lower valve (13) and upper valve (14) and adopts a conical surface seal.

3. The plug-in solenoid two-position three-way valve according to claim 1, characterized in that: The coil II (7) and the magnetic steel (8) and the coil I (9) and the magnetic steel (8) are connected by welding.

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