Electromagnetic valve with function of automatically releasing valve element outwards in power-on state

Abstract

The utility model discloses an electromagnetic valve with a function of automatically releasing a valve core outwards in a power-on state. The electromagnetic valve comprises a basic shell structure; the coil assembly structure is assembled on the basic shell structure in a closed mode, and a closed cavity is formed between the coil assembly structure and the basic shell structure; the coil assembly structure comprises a coil winding, and the coil winding is wound in the closed cavity; the static iron core structure is fixedly connected to the basic shell structure, and the static iron core structure is correspondingly located in the closed cavity; the movable iron core structure is assembled in the closed cavity in a sliding manner; the valve core rod body structure is in transmission connection with the movable iron core structure; and the reset spring structure is assembled on the valve element rod body structure in a sleeving mode, the reset spring structure abuts against the static iron core structure, and the reset spring structure abuts against the valve element rod body structure. The technical problems that in the prior art, a valve element driving structure of an electromagnetic valve is tedious and complex, and the overall sealing degree is difficult to meet the set requirement under the specific working condition are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic valve devices, and in particular to an electromagnetic valve with a function of automatically releasing a valve core outwards in a power-on state. Background Art

[0002] Solenoid valve is an industrial device based on electromagnetic control principle, which is widely used in the automatic control of fluid medium. At present, solenoid valves have several functional types, and different solenoid valves play different roles in different positions of the control system. The most commonly used ones are check valves, directional control valves, speed control valves, etc.

[0003] A conventional solenoid valve is usually provided with a sealed chamber inside, and a moving iron core and a stationary iron core are respectively provided inside the sealed chamber, and the valve core is driven by the relative position relationship between the moving iron core and the stationary iron core to form a control function for the fluid medium. However, when the external coil of the existing solenoid valve is energized, its valve core drive structure is relatively cumbersome and complicated, and the overall sealing degree is difficult to meet the established requirements under specific working conditions. Utility Model Content

[0004] To this end, the utility model provides a solenoid valve with the function of automatically releasing the valve core outward when powered on, so as to solve the technical problems that the valve core driving structure of the solenoid valve in the prior art is relatively cumbersome and complicated, and the overall sealing degree is difficult to meet the established requirements under specific working conditions.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A solenoid valve having the function of automatically releasing a valve core outward when powered on, comprising:

[0007] Basic shell structure;

[0008] A coil assembly structure is installed in a closed manner on the basic housing structure, and a closed chamber is formed between the coil assembly structure and the basic housing structure; the coil assembly structure includes a coil winding, and the coil winding is correspondingly wound on the outer side of the closed chamber;

[0009] A static core structure is fixedly mounted on the basic shell structure, and the static core structure is correspondingly located inside the closed chamber;

[0010] A movable core structure, slidably mounted inside the sealed chamber;

[0011] A valve core rod structure, one end of which is transmission-connected to the dynamic position iron core structure, and the other end of which sequentially extends through the static position iron core structure and the basic shell structure;

[0012] The return spring structure is sleeved and assembled on the outer side of the valve core rod structure, and one end of the return spring structure is abutted against the static iron core structure, and the other end of the return spring structure is abutted against an end of the valve core rod structure corresponding to the dynamic iron core structure.

[0013] On the basis of the above technical solution, the utility model is further described as follows:

[0014] As a further solution of the utility model, a first cavity is provided inside the basic shell structure;

[0015] The coil assembly structure also includes a coil base frame, an injection-molded overmolding layer and a rear cover frame;

[0016] The coil winding is wound on the outer side of the coil base;

[0017] The injection molding layer is respectively fixedly covering the outer side of the coil frame and the outer side of the coil winding;

[0018] The rear cover frame is respectively positioned on the coil base frame and the injection-molded overmolding layer, and the rear cover frame is fixedly connected to the inner wall of the first cavity of the basic housing structure by interference fit;

[0019] A second cavity is provided inside the coil base;

[0020] The first cavity and the second cavity together form the closed chamber.

[0021] As a further solution of the utility model, the rear cover frame is fixedly arranged at an inner position of the coil base frame, and the rear cover frame has a first limit end and a second limit end which are fixedly connected in an integral manner;

[0022] The first limiting end is positioned on the coil base, the second limiting end is protruded and positioned on the coil base and the injection molding layer in sequence, and the second limiting end is fixedly connected to the inner wall of the first cavity of the basic shell structure by interference fit based on the protruding part of the injection molding layer.

[0023] As a further solution of the present utility model, the coil base and the injection molding layer are respectively adaptively accommodated in the first cavity of the basic shell structure, and a sealing ring is fixedly provided between the outer edge of the second cavity of the coil base and the first cavity of the basic shell structure.

[0024] As a further solution of the utility model, it also includes:

[0025] A dynamic guide structure, including a backing pad and a straight guide tube;

[0026] The backing pad is fixedly mounted at the bottom of the second cavity of the coil frame;

[0027] The straight conduit is accommodated in the closed chamber, and the straight conduit is clamped and arranged between the backing pad and the coil base.

[0028] As a further solution of the present invention, the straight conduit extends to the inside of the first cavity of the basic shell structure, and the straight conduit is connected to the sealing ring in contact with each other.

[0029] As a further solution of the utility model, the static core structure includes a static core body and a static spring limiting groove;

[0030] The static iron core body is fixedly arranged on the basic shell structure, and the static iron core body is correspondingly located inside the closed chamber;

[0031] The static spring limiting groove is disposed on the static iron core body, and the notch direction of the static spring limiting groove faces the second cavity.

[0032] As a further solution of the utility model, the movable core structure includes a movable core body, a valve core limiting groove and a magnetic isolation gasket;

[0033] The moving iron core body is slidably assembled and arranged inside the straight guide tube, and one end of the moving iron core body is abutted against the backing pad;

[0034] The valve core limiting groove is provided at the other end of the moving iron core body;

[0035] The magnetic isolation gasket is slidably assembled and arranged inside the straight conduit, and the magnetic isolation gasket is correspondingly located between the moving iron core body and the static iron core body.

[0036] As a further solution of the utility model, the valve core rod structure includes a valve core body and a spring limit plate;

[0037] One end of the valve core body is fixedly connected to the spring limiting plate;

[0038] The spring limiting plate is disposed against the bottom of the valve core limiting groove;

[0039] The other end of the valve core body extends from the valve core limiting groove and passes through the static spring limiting groove, the static iron core body and the basic shell structure in sequence.

[0040] As a further solution of the utility model, the return spring structure is sleeved and assembled on the outer side of the valve core body;

[0041] One end of the return spring structure is abutted against the bottom of the static spring limiting groove, and the other end of the return spring structure is connected to the spring limiting plate.

[0042] The utility model has the following beneficial effects:

[0043] The solenoid valve can effectively form a predetermined closed valve body structure through the cooperation of the basic shell structure and the coil assembly structure, and can utilize the electromagnetic effect of the coil assembly structure to enable the dynamic position iron core structure to effectively move toward the static position iron core structure based on the dynamic position guide structure, and then the dynamic position iron core structure synchronously drives the valve core rod structure to extend outward, and can use the reset spring structure to realize that when the dynamic position iron core structure loses the electromagnetic effect of resetting, the reset spring structure forms a rebound force to synchronously reset the valve core rod structure, thereby realizing the predetermined valve body oil and gas channel switching opening and closing function, and improving the overall functional convenience and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for the implementation methods or the description of the prior art will be briefly introduced below. The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the utility model without affecting the effects and purposes that can be achieved by the utility model.

[0045] Figure 1 The overall cross-sectional structure diagram of the solenoid valve provided in the embodiment of the utility model has the function of automatically releasing the valve core outward when powered on.

[0046] Figure 2 A schematic diagram of the limiting assembly structure of the rear cover frame and the injection molding layer in the solenoid valve with the function of automatically releasing the valve core outward when powered on, provided by an embodiment of the utility model.

[0047] Figure 3 A schematic diagram of the limiting assembly structure of the rear cover frame and the coil base frame of the solenoid valve with the function of automatically releasing the valve core outward when powered on, provided in an embodiment of the utility model.

[0048] Figure 4 This is a schematic diagram of the overall structure of the rear cover frame in a solenoid valve with the function of automatically releasing the valve core outward when powered on, provided by an embodiment of the utility model.

[0049] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0050] Basic shell structure 1; Enclosed chamber 11;

[0051] Coil assembly structure 2: coil base frame 21, coil winding 22, injection molding overmolding layer 23, rear cover frame 24, first limit end 241, second limit end 242, sealing ring 25;

[0052] Static core structure 3: static core body 31, static spring limiting groove 32;

[0053] Dynamic guide structure 4: backing pad 41, straight guide tube 42;

[0054] The movable core structure 5 includes a movable core body 51, a valve core limiting groove 52, and a magnetic isolation gasket 53;

[0055] Valve core rod structure 6: valve core body 61, spring limit plate 62

[0056] Return spring structure 7. DETAILED DESCRIPTION

[0057] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] The terms such as "upper", "lower", "left", "right", and "middle" used in this specification are only for the convenience of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships shall be deemed to be within the scope of the present invention without substantially changing the technical content.

[0059] like Figures 1 to 4 As shown, the embodiment of the utility model provides a solenoid valve with the function of automatically releasing the valve core outward when powered on, including a basic shell structure 1, a coil assembly structure 2, a static iron core structure 3, a dynamic guide structure 4, a dynamic iron core structure 5, a valve core rod structure 6 and a reset spring structure 7, which are used to effectively form a predetermined closed valve body structure through the basic shell structure 1 in cooperation with the coil assembly structure 2, and at the same time, the electromagnetic action of the coil assembly structure 2 can be used to enable the dynamic iron core structure 5 to effectively move toward the static iron core structure 3 based on the dynamic guide structure 4, and then the dynamic iron core structure 5 synchronously drives the valve core rod structure 6 to extend outward, and the reset spring structure 7 can be used to realize that when the dynamic iron core structure 5 loses the electromagnetic action to reset, the reset spring structure 7 forms a rebound force to synchronously reset the valve core rod structure 6, thereby realizing the predetermined valve body oil and gas channel switching opening and closing function, and improving the functional convenience. The specific settings are as follows:

[0060] Please refer to Figure 1 , a first cavity is arranged inside the basic shell structure 1; the coil assembly structure 2 is partially located inside the first cavity of the basic shell structure 1, specifically, the coil assembly structure 2 includes a coil base 21, a coil winding 22, an injection molding layer 23, a rear cover frame 24 and a sealing ring 25; wherein, the coil winding 22 is wound on the outer side of the coil base 21, and a second cavity is arranged inside the coil base 21; the injection molding layer 23 is respectively fixedly covered on the outer side of the coil base 21 and the outer side of the coil winding 22.

[0061] Please refer to Figures 1 to 4 The rear cover frame 24 is fixedly arranged at the internal position of the coil base frame 21, and the rear cover frame 24 has a first limiting end 241 and a second limiting end 242 which are fixedly connected in an integral manner. The first limiting end 241 is clamped and arranged on the coil base frame 21, and the second limiting end 242 is protruded and clamped and arranged on the coil base frame 21 and the injection molding layer 23 in turn, and the second limiting end 242 is fixedly arranged on the inner wall of the first cavity of the basic shell structure 1 based on the interference fit of the protruding part of the injection molding layer 23, so as to effectively improve the structural stability performance between the coil base frame 21, the coil winding 22 and the injection molding layer 23 by utilizing the rear cover frame 24, and can further make the structure between the coil assembly structure 2 and the basic shell structure 1 relatively stable.

[0062] The coil base frame 21 and the injection molding layer 23 are respectively adaptively accommodated inside the first cavity of the basic shell structure 1, and the second cavity of the coil base frame 21 is arranged opposite to the first cavity of the basic shell structure 1. A sealing ring 25 is fixedly provided between the outer edge of the second cavity of the coil base frame 21 and the first cavity of the basic shell structure 1 to form a closed chamber 11 through the first cavity of the basic shell structure 1 and the second cavity of the coil base frame 21.

[0063] Please continue to refer to Figure 1 The static iron core structure 3 includes a static iron core body 31 and a static spring limiting groove 32; wherein, the static iron core body 31 is riveted and fixed to the basic shell structure 1, and the static iron core body 31 is correspondingly located inside the closed chamber 11; the static spring limiting groove 32 is opened in the static iron core body 31, and the groove direction of the static spring limiting groove 32 is toward the second cavity.

[0064] The moving position guiding structure 4 includes a back pad 41 and a straight conduit 42; wherein the back pad 41 is fixedly mounted at the bottom position of the second cavity of the coil base 21, so as to utilize the back pad 41 as the bottom bearing and shock absorbing foundation of the moving position core structure 5; the straight conduit 42 is accommodated in the closed chamber 11, and the straight conduit 42 is clamped and arranged between the back pad 41 and the coil base 21, so as to effectively serve as the guiding sliding foundation of the moving position core structure 5 through the straight conduit 42.

[0065] As a preferred solution of this embodiment, the straight conduit 42 extends to the inside of the first cavity of the basic shell structure 1, and the straight conduit 42 is connected to the sealing ring 25 in contact with each other, so that when the oil and gas enter the closed chamber 11, the overall sealing effect of the coil assembly structure 2 and the extended diversion effect of the straight conduit 42 are utilized, so that the oil and gas can be further stably restricted by the axial sealing of the sealing ring 25 before flowing to the gap of the closed chamber 11, thereby allowing the oil and gas to be stably sealed in the internal space of the closed chamber 11, thereby improving the sealing effect, with fewer overall leakage points / surfaces and high reliability.

[0066] Please continue to refer to Figure 1 The movable iron core structure 5 includes a movable iron core body 51, a valve core limiting groove 52 and a magnetic isolation gasket 53; wherein, the movable iron core body 51 is slidably assembled and arranged inside the straight conduit 42, and one end of the movable iron core body 51 is abutted against the backing pad 41, so as to utilize the magnetic field formed by the energization of the coil winding 22 to effectively drive the movable iron core body 51 to slide along the straight conduit 42 toward the static iron core body 31; the valve core limiting groove 52 is opened at the other end of the movable iron core body 51, so as to effectively limit the valve core rod structure 6 through the valve core limiting groove 52; the magnetic isolation gasket 53 is slidably assembled and arranged inside the straight conduit 42, and the magnetic isolation gasket 53 is correspondingly located between the movable iron core body 51 and the static iron core body 31, so as to effectively weaken the influence of the magnetic field on the static iron core body 31.

[0067] The valve core rod structure 6 includes a valve core body 61 and a spring limit plate 62; wherein, one end of the valve core body 61 is fixedly connected to the spring limit plate 62, and the spring limit plate 62 is abutted against the bottom of the valve core limit groove 52, and the other end of the valve core body 61 extends from the valve core limit groove 52 through the static spring limit groove 32, the static iron core body 31 and the basic shell structure 1 in sequence, so as to realize that when the moving iron core body 51 slides toward the static iron core body 31 along the straight guide tube 42, the valve core body 61 can be automatically released outward synchronously with the moving iron core body 51.

[0068] Please continue to refer to Figure 1The return spring structure 7 is sleeved and assembled on the outer side of the valve core body 61, and one end of the return spring structure 7 is abutted against the bottom of the static spring limit groove 32, and the other end of the return spring structure 7 is abutted against the spring limit plate 62, so that when the coil winding 22 loses power and eliminates the magnetic field, the moving iron core body 51 and the valve core body 61 can be automatically reset based on the rebound action of the return spring structure 7, which effectively improves the overall functional practicality.

[0069] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A solenoid valve with the function of automatically releasing the valve core outward when powered on, characterized in that: include: Basic shell structure; A coil assembly structure is installed in a closed manner on the basic housing structure, and a closed chamber is formed between the coil assembly structure and the basic housing structure; the coil assembly structure includes a coil winding, and the coil winding is correspondingly wound on the outer side of the closed chamber; A static core structure is fixedly mounted on the basic shell structure, and the static core structure is correspondingly located inside the closed chamber; A movable core structure, slidably mounted inside the sealed chamber; A valve core rod structure, one end of which is transmission-connected to the dynamic position iron core structure, and the other end of which sequentially extends through the static position iron core structure and the basic shell structure; The return spring structure is sleeved and assembled on the outer side of the valve core rod structure, and one end of the return spring structure is abutted against the static iron core structure, and the other end of the return spring structure is abutted against an end of the valve core rod structure corresponding to the dynamic iron core structure.

2. The solenoid valve with the function of automatically releasing the valve core outward when powered on according to claim 1, characterized in that: A first cavity is provided inside the basic shell structure; The coil assembly structure also includes a coil base frame, an injection-molded overmolding layer and a rear cover frame; The coil winding is wound on the outer side of the coil base; The injection molding layer is respectively fixedly covering the outer side of the coil frame and the outer side of the coil winding; The rear cover frame is respectively positioned on the coil base frame and the injection-molded overmolding layer, and the rear cover frame is fixedly connected to the inner wall of the first cavity of the basic housing structure by interference fit; A second cavity is provided inside the coil base; The first cavity and the second cavity together form the closed chamber.

3. The solenoid valve with the function of automatically releasing the valve core outward when powered on according to claim 2, characterized in that: The rear cover frame is fixedly connected to the inner position of the coil base frame, and the rear cover frame has a first limit end and a second limit end which are fixedly connected in an integral manner; The first limiting end is positioned on the coil base, the second limiting end is protruded and positioned on the coil base and the injection molding layer in sequence, and the second limiting end is fixedly connected to the inner wall of the first cavity of the basic shell structure by interference fit based on the protruding part of the injection molding layer.

4. The solenoid valve with the function of automatically releasing the valve core outward when powered on according to claim 2, characterized in that: The coil base and the injection-molded overmolding layer are respectively and adaptively accommodated in the first cavity of the basic shell structure, and a sealing ring is fixedly provided between the outer edge of the second cavity of the coil base and the first cavity of the basic shell structure.

5. The solenoid valve with the function of automatically releasing the valve core outward when powered on according to claim 4, characterized in that: Also includes: A dynamic guide structure, including a backing pad and a straight guide tube; The backing pad is fixedly mounted at the bottom of the second cavity of the coil frame; The straight conduit is accommodated in the closed chamber, and the straight conduit is clamped and arranged between the backing pad and the coil base.

6. The solenoid valve with the function of automatically releasing the valve core outward when powered on according to claim 5, characterized in that: The straight conduit extends to the inside of the first cavity of the basic shell structure, and the straight conduit is connected to the sealing ring in contact with each other.

7. The solenoid valve with the function of automatically releasing the valve core outward when powered on according to claim 5, characterized in that: The static iron core structure comprises a static iron core body and a static spring limiting groove; The static iron core body is fixedly arranged on the basic shell structure, and the static iron core body is correspondingly located inside the closed chamber; The static spring limiting groove is disposed on the static iron core body, and the notch direction of the static spring limiting groove faces the second cavity.

8. The solenoid valve with the function of automatically releasing the valve core outward when powered on according to claim 7, characterized in that: The movable core structure comprises a movable core body, a valve core limiting groove and a magnetic isolation gasket; The moving iron core body is slidably assembled and arranged inside the straight guide tube, and one end of the moving iron core body is abutted against the backing pad; The valve core limiting groove is provided at the other end of the moving iron core body; The magnetic isolation gasket is slidably assembled and arranged inside the straight conduit, and the magnetic isolation gasket is correspondingly located between the moving iron core body and the static iron core body.

9. The solenoid valve with the function of automatically releasing the valve core outward when powered on according to claim 8, characterized in that: The valve core rod structure includes a valve core body and a spring limit plate; One end of the valve core body is fixedly connected to the spring limiting plate; The spring limiting plate is disposed against the bottom of the valve core limiting groove; The other end of the valve core body extends from the valve core limiting groove and passes through the static spring limiting groove, the static iron core body and the basic shell structure in sequence.

10. The solenoid valve with the function of automatically releasing the valve core outward when powered on according to claim 9, characterized in that: The return spring structure is sleeved and assembled on the outer side of the valve core body; One end of the return spring structure is abutted against the bottom of the static spring limiting groove, and the other end of the return spring structure is connected to the spring limiting plate.

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