Electromagnetic valve with kick mechanism

Abstract

The embodiment of the utility model provides an electromagnetic valve with a kick mechanism, and relates to the field of electromagnetic valves. The electromagnetic valve with the kick mechanism comprises a static iron core, a movable iron core, a sleeve, a valve cover, a first elastic piece, the kick mechanism and a piston body. Wherein the static iron core is used for being matched with the movable iron core in an adsorption mode in a power-on state, the sleeve is arranged on the static iron core and the movable iron core in a sleeving mode at the same time, the first elastic piece abuts against the position between the valve deck and the movable iron core, a kick cavity is formed in the end, away from the static iron core, of the movable iron core, the kick mechanism is movably contained in the kick cavity, and a valve port is formed in the piston body. The kick mechanism is used for sealing or opening the valve port. According to the electromagnetic valve with the kick mechanism, the distance between the movable iron core and the static iron core can be shortened when the valve port is opened during valve opening operation, the valve opening capacity is improved, and the valve opening smoothness can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to solenoid valve field, specifically, relate to a solenoid valve with a sudden jump mechanism. BACKGROUND

[0002] In the conventional normally closed solenoid valve, the valve is usually required to overcome the elastic force and the pressure difference force of the valve port periphery area.

[0003] And limited to the existing valve core structure, there is a problem of far adsorption distance between the moving and static iron core when opening the valve, insufficient opening valve capacity and poor opening valve smoothness. SUMMARY

[0004] The utility model provides a solenoid valve with a sudden jump mechanism, which can shorten the distance between the moving and static iron core when the valve port is opened, improve the opening valve capacity, and improve the opening valve smoothness.

[0005] The embodiment of the utility model can be realized as follows:

[0006] The embodiment of the utility model provides a solenoid valve with a sudden jump mechanism, which comprises:

[0007] The static iron core, the moving iron core, the sleeve, the valve cover, the first elastic member, the sudden jump mechanism and the piston body;

[0008] The static iron core is used for adsorbing and cooperating with the moving iron core in the energized state, the sleeve is simultaneously sleeved on the static iron core and the moving iron core, the valve cover is sleeved on the sleeve, the first elastic member is abutted between the valve cover and the moving iron core, one end of the moving iron core away from the static iron core is formed with a sudden jump cavity, the sudden jump mechanism is movably accommodated in the sudden jump cavity, the piston body is provided with a valve port, and the sudden jump mechanism is used for sealing or opening the valve port.

[0009] Optionally, the sudden jump mechanism comprises a sudden jump block, a limiting seat and a second elastic member, the sudden jump block is used for sealing or opening the valve port, the limiting seat is sleeved on one end of the piston body close to the sudden jump block, and the second elastic member is connected between the sudden jump block and the limiting seat.

[0010] Optionally, the sudden jump block comprises a disc body and a jump head connected with each other, the jump head is located at the center position of the disc body and protrudes from the disc body, and the jump head is accommodated in the sudden jump cavity; the disc body is connected with the second elastic member, and the jump head is used for sealing or opening the valve port.

[0011] Optionally, the disc body is provided with a rear groove and a first balance hole in communication, the rear groove is formed in the end face of the disc body away from the jump head, and the first balance hole is penetrated and arranged along the axial direction of the disc body.

[0012] Optionally, the side wall of the jump head comprises a sealing section for sealing or opening the valve port.

[0013] Alternatively, the side wall of the jump head comprises a sealing section and a guide section arranged at an angle, the sealing section is used for sealing or opening the valve port, and the slope of the guide section relative to the end face of the disc body is greater than the slope of the sealing section relative to the end face of the disc body.

[0014] Optionally, the limiting seat comprises a seat body and a limiting ring connected to each other, the seat body is connected to the outer side of the limiting ring, the second elastic member is sleeved on the limiting ring and connected to the seat body, and the limiting ring is sleeved on the piston body and one end of the jump block close to each other.

[0015] Optionally, the seat body is provided with a second balance hole penetratingly arranged along the axial direction of the seat body.

[0016] Optionally, the moving iron core is provided with a third balance hole at one end close to the piston body, and the third balance hole is in communication with the jump cavity.

[0017] Optionally, the electromagnetic valve with the jump mechanism further comprises a first sealing member arranged on the valve port and matched with the jump mechanism.

[0018] Optionally, the electromagnetic valve with the jump mechanism further comprises a coil and a valve body, the coil is sleeved on the sleeve, the valve body is sleeved on the piston body, and the valve cover is connected to the valve body and located between the coil and the valve body.

[0019] The electromagnetic valve with the jump mechanism has the following beneficial effects, for example:

[0020] The electromagnetic valve with the jump mechanism comprises a static iron core, a moving iron core, a sleeve, a valve cover, a first elastic member, a jump mechanism and a piston body; wherein the static iron core is used for being attracted and matched with the moving iron core in the energized state, the sleeve is sleeved on the static iron core and the moving iron core, the valve cover is sleeved on the sleeve, the first elastic member is arranged between the valve cover and the moving iron core, one end of the moving iron core away from the static iron core forms a jump cavity, the jump mechanism is movably arranged in the jump cavity, the piston body is provided with a valve port, and the jump mechanism is used for sealing or opening the valve port. In the valve opening process, the static iron core is energized to drive the moving iron core to move a first stroke, and only the first elastic member needs to be overcome without overcoming the pressure difference force around the valve port, so that the jump mechanism movably arranged in the jump cavity continues to seal the valve port, and the moving iron core is subjected to a greater electromagnetic force because it is closer to the static iron core, has a stronger valve opening capacity, and then overcomes the pressure difference force to open the valve port.

[0021] Furthermore, the whole jumping mechanism can be arranged in the jumping cavity of the moving core iron. An axial first balance hole is arranged in the disc body near the center position, so as to ensure that the pressure above the jumping block is close to the pressure near the center position below the jumping block. In addition, a second balance hole is arranged in the outer circumferential position below the jumping block and communicated with the external space, or a third balance hole is arranged in the outer circumferential position below the jumping block and communicated with the external space. In the initial stage of opening of the valve port, the pressure of the lower end surface of the jumping block is close to the pressure of the upper end surface, or the pressure of the lower end surface is slightly greater than the pressure of the upper end surface, which is beneficial to the lifting of the jumping block away from the valve port, and ensures the smoothness of the opening of the valve. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0023] Figure 1 The external structure schematic diagram of the electromagnetic valve provided in the embodiments of the present application with the jumping mechanism is shown in the figure.

[0024] Figure 2 The internal cross section schematic diagram of the electromagnetic valve provided in the embodiments of the present application with the jumping mechanism is shown in the figure.

[0025] Figure 3 The working schematic diagram of the electromagnetic valve provided in the embodiments of the present application with the jumping mechanism is shown in the figure. Figure 1

[0026] Figure 4 The working schematic diagram of the electromagnetic valve provided in the embodiments of the present application with the jumping mechanism is shown in the figure. Figure 2

[0027] Figure 5 The working schematic diagram of the electromagnetic valve provided in the embodiments of the present application with the jumping mechanism is shown in the figure. Figure 3

[0028] Figure 6 The working schematic diagram of the electromagnetic valve provided in the embodiments of the present application with the jumping mechanism is shown in the figure. Figure 4

[0029] Figure 7 The working schematic diagram of the jumping mechanism provided in the embodiments of the present application is shown in the figure.

[0030] Figure 8 The cross section schematic diagram of the jumping block provided in the embodiments of the present application is shown in the figure.​​​​

[0031] Figure 9 The figure is a sectional view of the limiting seat provided in the embodiment of the utility model.

[0032] Icon: 100 - electromagnetic valve with jump mechanism; 110 - static core; 120 - moving core; 121 - third balance hole; 130 - sleeve; 140 - first elastic member; 150 - jump mechanism; 151 - jump block; 1511 - disc body; 1512 - jump head; 1513 - rear groove; 1514 - first balance hole; 1515 - guide section; 1516 - sealing section; 152 - limiting seat; 1521 - seat body; 1522 - limiting ring; 1523 - second balance hole; 153 - second elastic member; 160 - piston body; 161 - valve port; 165 - first sealing member; 170 - coil; 172 - valve cover; 174 - valve body; 1741 - inlet; 1742 - outlet; 176 - magnetic guide frame; 178 - screw; 180 - second sealing member; 182 - third sealing member; 184 - piston ring; 186 - fourth sealing member. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.

[0035] It should be noted that: similar labels and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0036] In the description of the utility model, it needs to be explained that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is used, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0037] In addition, if the terms "first", "second" and the like are used only to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0038] The term "includes", "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "includes a" does not exclude the presence of additional identical elements in the process, method, article or device including the element.

[0039] Unless otherwise specified and limited, the terms "provide", "connect" and the like should be broadly understood, for example, "connect" can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0040] It should be noted that the features in the embodiments of the utility model can be combined with each other without conflict.

[0041] Please refer to Figure 1 And Figure 2 The electromagnetic valve 100 provided in the embodiments of the utility model can solve the above problems, which will be described in detail.

[0042] The electromagnetic valve 100 provided in the embodiments of the utility model can solve the above problems, which will be described in detail.

[0043] The static iron core 110 is used to be attracted and matched with the moving iron core 120 in the electrified state, the sleeve pipe 130 is sleeved on the static iron core 110 and the moving iron core 120, the valve cover 172 is sleeved on the sleeve pipe 130, the first elastic member 140 is abutted between the valve cover 172 and the moving iron core 120, the end of the moving iron core 120 away from the static iron core 110 is formed with a bouncing cavity, the bouncing mechanism 150 is movably accommodated in the bouncing cavity, the valve port 161 is formed on the piston body 160, and the bouncing mechanism 150 is used to seal or open the valve port 161.

[0044] In the valve opening process, the static iron core 110 is electrified to drive the moving iron core 120 to move a first stroke, and only the first elastic member 140 needs to be overcome without overcoming the pressure difference force around the valve port 161, so that the bouncing mechanism 150 movably accommodated in the bouncing cavity continues to seal the valve port 161, and the moving iron core 120 will be subjected to a stronger electromagnetic force because it is closer to the static iron core 110, and then the pressure difference force is overcome to open the valve port 161.

[0045] It is worth noting that the bouncing cavity is formed in the moving iron core 120, the bouncing mechanism 150 can move in the bouncing cavity, the static iron core 110 attracts the moving iron core 120 to move a first stroke without overcoming the pressure difference force, a stronger electromagnetic force is generated when the moving iron core 120 is close to the static iron core 110, and then the pressure difference force is overcome to open the valve port 161, thereby improving the valve opening capacity.

[0046] Reference Figures 2-7 The bouncing mechanism 150 includes a bouncing block 151, a limiting seat 152 and a second elastic member 153, the bouncing block 151 is used to seal or open the valve port 161, the limiting seat 152 is sleeved on the end of the piston body 160 close to the bouncing block 151, and the second elastic member 153 is connected between the bouncing block 151 and the limiting seat 152.

[0047] It should be noted that in the unpowered state, when the static iron core 110 does not generate an electromagnetic force to drive the moving iron core 120 to move, the distance between the moving iron core 120 and the static iron core 110 is H1, and at this time the limiting seat 152 is spaced from the bouncing block 151 and the distance is H2, H2 < H1.

[0048] In the process of moving the first stroke, the limit seat 152 moves synchronously with the moving iron core 120 and compresses the second elastic member 153 during the movement until the limit seat 152 abuts against the bump block 151, and the bump block 151 does not change the position and continues to seal the valve port 161 because the pressure difference force is not overcome in the process. In the process, the length of the first stroke is H2, that is, the displacement of the moving iron core 120, the limit block, and the limit seat 152 is H2, and the distance between the moving iron core 120 and the static iron core 110 is H1-H2, and the distance between the bump block 151 and the bump cavity of the moving iron core 120 is H2.

[0049] When the moving iron core 120 moves the first stroke, because it is closer to the static iron core 110, it is subjected to a larger electromagnetic force and has a stronger valve opening capability. At this time, the electromagnetic force overcomes the pressure difference force near the valve port 161, and the moving iron core 120 continues to move the second stroke towards the static iron core 110, and the length of the second stroke is H1-H2, that is, the displacement of the moving iron core 120, the bump block 151, and the limit seat 152 is H1-H2, and after the movement, the moving iron core 120 is in contact with the static iron core 110. And in the process, the bump block 151 moves away from the valve port 161 to open the valve port 161 and complete the valve opening action.

[0050] Reference Figure 7 and Figure 8 The bump block 151 includes a disc body 1511 and a bump head 1512 connected to each other, the bump head 1512 is located at the center of the disc body 1511 and protrudes from the disc body 1511, and the length of the bump head 1512 is shorter and is located in the bump cavity of the moving iron core 120; the disc body 1511 is connected with the second elastic member 153, and the bump head 1512 is used for sealing or opening the valve port 161. In the embodiment, the disc body 1511 is in the form of a disc, and the bump head 1512 is located at the center of the disc of the disc body 1511.

[0051] Further, the side wall of the bump head 1512 can only have a sealing section 1516, or the side wall of the bump head 1512 can include a guide section 1515 and a sealing section 1516 arranged at an angle, and the slope of the guide section 1515 relative to the end face of the disc body 1511 is greater than the slope of the sealing section 1516 relative to the end face of the disc body 1511. When the bump head 1512 seals the valve port 161, the guide section 1515 is used for guiding, and the sealing section 1516 is used for sealing effect.

[0052] It is worth noting that the slope can be understood as the inclination of the guide section 1515 or the sealing section 1516 relative to the disc body 1511, the greater the slope, the closer the relative inclination angle to the vertical state, and the smaller the slope, the closer the relative inclination angle to the parallel state.

[0053] Reference Figure 7 andFigure 8 In order to improve the gas flowability of the two sides of the disc body 1511 and achieve pressure balance, the disc body 1511 is provided with a rear groove 1513 and a first balance hole 1514 in communication. The rear groove 1513 is formed on the end face of the disc body 1511 away from the jump head 1512, and the first balance hole 1514 is provided in the axial direction of the disc body 1511.

[0054] In the process of moving the jump head 1512 away from the valve port 161, the disc body 1511 approaches the moving iron core 120, and by providing the rear groove 1513 and the first balance hole 1514, the air pressure between the disc body 1511 and the moving iron core 120 can be avoided to hinder the relative movement, which helps to achieve the air pressure balance on the two sides of the disc body 1511 close to and away from the moving iron core 120.

[0055] Referring to Figure 7 and Figure 9 The limiting seat 152 includes a seat body 1521 and a limiting ring 1522 connected to each other. The seat body 1521 is connected to the outer side of the limiting ring 1522. The second elastic member 153 is sleeved on the limiting ring 1522 and connected to the seat body 1521. The limiting ring 1522 is also sleeved on the piston body 160 and the end of the jump block 151 close to each other.

[0056] In addition, the seat body 1521 is provided with a second balance hole 1523, which is provided in the axial direction of the seat body 1521. By providing the second balance hole 1523, the outer circumferential position below the jump block 151 is communicated with the external space.

[0057] When the valve port 161 is opened, the piston body 160 can also move towards the direction close to the static iron core 110, so that the inlet 1741 and the outlet 1742 of the piston are in communication. The movement stroke of the piston body 160 is H3, and H3

[0058] Referring to Figures 1-7 In order to achieve the air pressure balance between the jump cavity and the outer space, the end of the moving iron core 120 close to the piston body 160 is provided with a third balance hole 121 in communication with the jump cavity. In this embodiment, the third balance hole 121 is provided in the radial direction of the moving iron core 120.

[0059] Optionally, in order to realize the sealing precision of the position of the valve port 161 and avoid the gap between the sealing section 1516 and the valve port 161, the electromagnetic valve 100 with the jump mechanism further includes a first sealing member 165, which is arranged on the valve port 161 and cooperates with the jump mechanism 150.

[0060] Referring to Figures 1-6The electromagnetic valve 100 with the bumping mechanism further comprises a coil 170, a valve cover 172, and a valve body 174, the coil 170 and the valve cover 172 are sleeved on the sleeve 130, the valve body 174 is sleeved on the piston body 160, the valve cover 172 is connected to the valve body 174 and located between the coil 170 and the valve body 174. In addition, the electromagnetic valve with the bumping mechanism 150 further comprises a magnetic conducting frame 176, the coil 170 is installed on the inner side of the magnetic conducting frame 176, and a screw 178 is installed on the top end of the magnetic conducting frame 176. A second sealing element 180 is arranged between the valve body 174 and the valve cover 172, and a third sealing element 182 is arranged at the bottom end of the valve body 174, so as to improve the sealing performance.

[0061] It is worth noting that the piston ring 184 is sleeved on the outer side of the piston body 160, and the fourth sealing element 186 is arranged between the piston body 160 and the valve body 174. The inlet 1741 is formed in the side wall of the valve body 174, the outlet 1742 is formed at the bottom end of the valve body 174, and the piston body 160 is used to realize the communication or disconnection of the inlet 1741 and the outlet 1742 by moving.

[0062] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A solenoid valve with a snap-action mechanism, characterized in that, The application relates to a valve, which comprises a static iron core (110), a dynamic iron core (120), a sleeve (130), a valve cover (172), a first elastic member (140), a jump mechanism (150) and a piston body (160). The static iron core (110) is used for being attracted to the dynamic iron core (120) in an energized state, the sleeve (130) is sleeved on the static iron core (110) and the dynamic iron core (120), the valve cover (172) is sleeved on the sleeve (130), the first elastic member (140) is arranged between the valve cover (172) and the dynamic iron core (120), one end of the dynamic iron core (120) away from the static iron core (110) is provided with a jump cavity, the jump mechanism (150) is movably arranged in the jump cavity, and the piston body (160) is provided with a valve port (161), and the jump mechanism (150) is used for sealing or opening the valve port (161). The jump mechanism (150) comprises a jump block (151), a limiting seat (152) and a second elastic member (153), the jump block (151) is used for sealing or opening the valve port (161), the limiting seat (152) is sleeved on one end of the piston body (160) close to the jump block (151), and the second elastic member (153) is connected between the jump block (151) and the limiting seat (152).

2. The electromagnetic valve with a poppet mechanism according to claim 1, characterized by The jump block (151) comprises a disc body (1511) and a jump head (1512) connected with each other, the jump head (1512) is located at the center of the disc body (1511) and protrudes from the disc body (1511) and is arranged in the jump cavity, the disc body (1511) is connected with the second elastic member (153), and the jump head (1512) is used for sealing or opening the valve port (161).

3. The electromagnetic valve with a poppet mechanism according to claim 2, characterized by The disc body (1511) is provided with a rear groove (1513) and a first balance hole (1514) in communication, the rear groove (1513) is formed in an end face of the disc body (1511) away from the jump head (1512), and the first balance hole (1514) is arranged in the axial direction of the disc body (1511).

4. The electromagnetic valve with a poppet mechanism according to claim 3, characterized by The side wall of the jump head (1512) comprises a sealing section (1516), and the sealing section (1516) is used for sealing or opening the valve port (161).

5. The electromagnetic valve with a poppet mechanism according to claim 3, characterized by Alternatively, the side wall of the jump head (1512) comprises a guide section (1515) and a sealing section (1516) arranged at an angle, the sealing section (1516) is used for sealing or opening the valve port (161), and the slope of the guide section (1515) relative to the end face of the disc body (1511) is greater than the slope of the sealing section (1516) relative to the end face of the disc body (1511). ​ 6. The electromagnetic valve with a poppet mechanism according to claim 2, characterized by The limiting seat (152) comprises a seat body (1521) and a limiting ring (1522) connected with each other, the seat body (1521) is connected to the outer side of the limiting ring (1522), the second elastic member (153) is sleeved on the limiting ring (1522) and connected to the seat body (1521), and the limiting ring (1522) is sleeved on the piston body (160) and the end of the jump block (151) close to each other.

7. The electromagnetic valve with a poppet mechanism according to claim 6, characterized by The seat body (1521) is provided with a second balance hole (1523) penetrating along the axial direction of the seat body (1521).

8. The electromagnetic valve with a poppet mechanism according to any one of claims 1 to 7, characterized in that, The end of the moving iron core (120) close to the piston body (160) is provided with a third balance hole (121) in communication with the jump cavity.

9. The electromagnetic valve with a poppet mechanism according to any one of claims 1 to 7, characterized in that, The electromagnetic valve with the jump mechanism further comprises a first sealing member (165) arranged on the valve port (161) and matched with the jump mechanism (150).

10. The electromagnetic valve with a poppet mechanism according to any one of claims 1 to 7, characterized in that, The electromagnetic valve with the jump mechanism further comprises a coil (170) and a valve body (174), the coil (170) is sleeved on the sleeve (130), the valve body (174) is sleeved on the piston body (160), and the valve cover (172) is connected to the valve body (174) and located between the coil (170) and the valve body (174).

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