CN217401701U - Electromagnetic valve - Google Patents

Abstract

The utility model provides a solenoid valve, include: a valve body having a valve port; the shell is fixed on the valve body; the static iron core is arranged in the shell; the movable iron core is movably arranged in the shell, a balance structure is arranged on the outer side wall and extends from one end of the movable iron core to the other end of the movable iron core, and an accommodating cavity is formed in one end, close to the valve port, of the movable iron core; the sealing part is movably arranged in the accommodating cavity; the correcting part is arranged in the accommodating cavity in a deflection mode, is positioned at one end, far away from the valve port, of the sealing part, and is provided with a first contact end and a second contact end, the first contact end is provided with an arc surface, the second contact end is provided with a plane, and the arc surface of the first contact end is abutted to the sealing part; the buffer piece is arranged in the accommodating cavity and located between the correcting portion and the movable iron core, one end of the buffer piece is abutted to the plane of the second contact end, and the other end of the buffer piece is abutted to the inner wall of the accommodating cavity. Through the technical scheme of this application, leak problem in the easy production of valve port department among the prior art is solved.

Description

Electromagnetic valve

Technical Field

The utility model relates to a solenoid valve technical field particularly, relates to a solenoid valve.

Background

At present, the solenoid valve includes quiet iron core, moves iron core, buffer spring, flat gasket and sealed the pad, and buffer spring, flat gasket and sealed the pad are placed in moving the intracavity that holds of iron core, and quiet iron core with move the iron core setting in the valve body of solenoid valve, move iron core and valve body and be clearance fit, quiet iron core drive moves the iron core and removes in the valve body to drive sealed shutoff of filling up and open the valve port of solenoid valve. However, in the prior art, when the valve port is sealed by the sealing gasket, because the surface of the buffer spring is irregular, the force acting on the sealing gasket is unbalanced, or because the movable iron core is inclined due to processing errors or the end face of the valve port is inclined, the force provided by the buffer spring cannot be uniformly applied to the sealing gasket, so that a gap exists between the sealing gasket and the valve port when the sealing gasket is contacted with the valve port, and the possibility of internal leakage of the electromagnetic valve is increased.

SUMMERY OF THE UTILITY MODEL

The utility model provides a solenoid valve to solve the problem of leaking in the easy production of valve port department among the prior art.

The utility model provides a solenoid valve, solenoid valve includes: the valve body is provided with a valve port; the valve body is provided with a first end and a second end which are arranged oppositely, and the first end of the valve body is arranged close to the valve port; the static iron core is arranged in the shell and is positioned at the second end of the shell; the movable iron core is movably arranged in the shell, a balance structure is arranged on the outer side wall of the movable iron core, the balance structure extends from one end of the movable iron core to the other end of the movable iron core, and an accommodating cavity is formed in one end, close to the valve port, of the movable iron core; the sealing part is movably arranged in the accommodating cavity and is used for plugging or opening the valve port; the correcting part is arranged in the accommodating cavity in a deflectable manner, is positioned at one end, far away from the valve port, of the sealing part, and is provided with a first contact end and a second contact end which are arranged oppositely, the end face of the first contact end is provided with an arc face, the end face of the second contact end is provided with a plane, and the arc face of the first contact end is abutted to the sealing part; the buffer piece is arranged in the accommodating cavity and located between the correcting portion and the movable iron core, one end of the buffer piece is abutted to the plane of the second contact end, and the other end of the buffer piece is abutted to the inner wall of the accommodating cavity.

Use the technical scheme of the utility model, be provided with the valve port on the valve body, quiet iron core with move the iron core setting in the casing, bolster, correction portion and sealing set gradually and are moving the intracavity that holds on the iron core, move and are provided with balanced structure on the iron core, the cambered surface and the sealing butt of the first contact jaw of correction portion, the plane and the bolster looks butt of second contact jaw. By the arrangement, the pressure difference between the two ends of the movable iron core can be reduced, so that the movable iron core can stably and quickly move in the shell; and, in prior art, for guaranteeing fluidic quick flow, can reduce the diameter of moving the iron core usually, weaken the guide effect of casing to moving the iron core, lead to moving the iron core and reciprocating the in-process unbalance, in this application, add balanced structure and avoid reducing the diameter of moving the iron core, and then can guarantee to move the iron core and move in the casing balance. By adopting the structure, the unbalanced force applied to the plane of the second contact end of the correcting part enables the correcting part to rotate and transmits the force to the abutting part of the cambered surface of the first contact end and the sealing part, and the abutting part is constantly kept above the valve port, so that the force can be concentrated on the contact position of the first contact end and the sealing part, and finally, the acting force can be uniformly distributed on the sealing part, thereby ensuring that the sealing part can completely block the valve port, avoiding the generation of gaps when the sealing part is in contact with the valve port, and further reducing the possibility of inner leakage of the electromagnetic valve.

Further, the correcting part comprises a first gasket, the first gasket is provided with a first end and a second end which are oppositely arranged, the first end of the first gasket is provided with an arc surface, and the second end of the first gasket is provided with a plane. The first gasket can transmit unbalanced force provided by the buffer piece to the abutting part of the cambered surface of the first gasket and the sealing part, and the abutting part is kept above the valve port all the time, so that the force can be uniformly transmitted to the sealing part, the sealing part can be ensured to fully seal the valve port, and internal leakage is avoided.

Furthermore, the middle part of the first gasket protrudes towards the valve port, the side of the middle part of the first gasket, which faces the valve port, forms an arc surface, and the side of the first gasket, which is far away from the valve port, is provided with a plane. By the arrangement, the deflection range of the first gasket on the sealing part can be reduced, so that the abutting part of the cambered surface of the first gasket and the sealing part can be kept above the valve port at all times, unbalanced force provided by the buffer part can be uniformly transmitted to the sealing part, and the sealing effect of the sealing part on the valve port is ensured.

Further, the correction portion comprises a first connecting section and a second connecting section which are sequentially connected along the axial direction, one end, far away from the second connecting section, of the first connecting section is an arc surface, the other end of the first connecting section is a plane, the second connecting section is of a cylindrical structure, the cross-sectional size of the second connecting section is smaller than that of the first connecting section, the buffer piece is a buffer spring, and the buffer spring is sleeved on the second connecting section and abutted to the plane. By adopting the structure, when the force applied to the first connecting section is unbalanced, the cambered surface of the second connecting section rotates, and the second connecting section is arranged in the buffer spring in a penetrating manner, so that the rotation of the correcting part can be limited, the situation that the butt part of the cambered surface and the sealing part of the second connecting section is constantly positioned above the valve port is ensured, the unbalanced force can be uniformly transmitted to the sealing part, and the sealing effect of the sealing part on the valve port is ensured.

Furthermore, the correcting part comprises a second gasket and a ball, a first avoiding part is arranged on one side, facing the valve port, of the second gasket, the ball part is located in the first avoiding part, one side, far away from the second gasket, of the ball is abutted against the sealing part, and the buffer part is abutted against one side, far away from the ball, of the second gasket. The buffer piece can transmit unbalanced force to the second gasket, so that the second gasket is inclined, the first avoidance portion can limit the ball, the ball is located above the sealing gasket constantly, and the force can be transmitted to the sealing portion evenly.

Further, the correction portion further comprises a third gasket, the third gasket is located between the second gasket and the sealing portion, the third gasket is provided with an avoiding hole, the diameter of the avoiding hole is smaller than that of the ball, and the ball partially penetrates through the avoiding hole. So can further carry on spacingly to the ball, avoid the ball to roll in the sealing, the ball can transmit power to the third gasket simultaneously to can transmit power to the third gasket, improve the effect of ball equilibrant. Meanwhile, the ball can be prevented from directly contacting with the sealing part, and the sealing part is prevented from being damaged.

Further, the sealing portion comprises a flat gasket and a sealing gasket, the sealing gasket is arranged close to the valve port, one end of the flat gasket is abutted to the sealing gasket, and the other end of the flat gasket is abutted to the cambered surface of the first contact end. So set up, increased the area of contact of ball with sealed the pad for power further evenly transmits to the gasket, can avoid the ball directly to act on the gasket simultaneously, thereby can avoid sealed the pad to produce the damage.

Further, the balancing structure comprises a balancing groove or a tangent plane. So set up, can increase the area of moving the circulation passageway of fluid between iron core and the casing, the fluidic circulation of being convenient for to be convenient for move reciprocating of iron core, simultaneously, move clearance fit between iron core and the casing, so can avoid moving the clearance between iron core and the casing too big, guarantee the casing to the guide effect who moves the iron core, avoid moving the iron core and produce in the removal process and rock.

Further, the solenoid valve still includes the balancing hole, the one end in balancing hole with hold the chamber intercommunication, the other end in balancing hole runs through the lateral wall that moves the iron core. So set up, the fluid between movable core and the casing can with hold the fluid between the chamber and circulate mutually, guarantee that the inside pressure of casing is the same, the sealing of being convenient for removes in holding the chamber.

Further, the balance hole is connected with the balance structure. So set up, further guaranteed to move the pressure differential at iron core both ends, be convenient for move the iron core quick travel in the casing.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural diagram of a solenoid valve provided in a first embodiment of the present invention;

fig. 2 shows a partial enlarged view of a point a provided in an embodiment of the present invention;

fig. 3 shows a schematic structural diagram of a solenoid valve provided by the second embodiment of the present invention;

fig. 4 shows a partial enlarged view of a position B provided in the second embodiment of the present invention;

fig. 5 shows a schematic structural diagram of a solenoid valve provided by a third embodiment of the present invention;

fig. 6 shows a partial enlarged view of a point C provided in the third embodiment of the present invention;

fig. 7 shows a schematic structural diagram of a solenoid valve provided by the fourth embodiment of the present invention;

fig. 8 shows a partial enlarged view of a position D provided in the fourth embodiment of the present invention;

fig. 9 shows a top view of the movable iron core provided by the present invention;

fig. 10 shows a top view of a further embodiment of a plunger provided by the present invention;

fig. 11 shows a top view of another embodiment of the plunger provided by the present invention.

Wherein the figures include the following reference numerals:

10. a valve body; 11. a valve port; 20. a housing; 30. a stationary core; 40. a movable iron core; 41. a balance structure; 50. a sealing part; 51. flattening the gasket; 52. a gasket; 61. a first gasket; 621. a first connection section; 622. a second connection section; 63. a second gasket; 64. a ball bearing; 65. a third gasket; 70. a buffer member; 80. and (4) balancing holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1, an embodiment of the present invention provides a solenoid valve, which includes a valve body 10, a housing 20, a stationary core 30, a movable core 40, a sealing portion 50, a correcting portion, and a buffer 70. The valve body 10 has a valve port 11, the housing 20 is fixed on the valve body 10, the housing 20 has a first end and a second end which are oppositely arranged, and the first end of the housing 20 is arranged near the valve port 11. The stationary core 30 is disposed within the housing 20 and is located at a second end of the housing 20. The movable iron core 40 is movably arranged in the housing 20, the movable iron core 40 is in clearance fit with the housing 20, a balance structure 41 is arranged on the outer side wall of the movable iron core 40, the balance structure 41 extends from one end of the movable iron core 40 to the other end of the movable iron core 40, so that the movable iron core 40 keeps balance in the up-and-down moving process, and one end, close to the valve port 11, of the movable iron core 40 is provided with an accommodating cavity. The stationary core 30 can drive the movable core 40 to move up and down in the housing 20. A sealing portion 50 is movably disposed in the accommodating chamber, and the sealing portion 50 is used for blocking or opening the valve port 11. The correcting part is arranged in the accommodating cavity in a deflectable manner, the correcting part is positioned at one end, far away from the valve port 11, of the sealing part 50, the correcting part is provided with a first contact end and a second contact end which are arranged oppositely, the end face of the first contact end is provided with an arc face, the end face of the second contact end is provided with a plane, and the arc face of the first contact end is abutted to the sealing part 50. The buffer member 70 is disposed in the accommodating cavity and located between the correcting portion and the movable core 40, one end of the buffer member 70 abuts against the plane of the second contact end, and the other end of the buffer member 70 abuts against the inner wall of the accommodating cavity. The buffer member 70 can generate a buffer effect during the up-and-down movement of the sealing portion 50, and prevent the sealing portion 50 from being damaged due to the impact of the fluid on the sealing portion 50 during the movement.

By using the technical scheme of the application, the valve port 11 is arranged on the valve body 10, the stationary iron core 30 and the movable iron core 40 are arranged in the shell 20, the buffer member 70, the correcting portion and the sealing portion 50 are sequentially arranged in the accommodating cavity on the movable iron core 40, the balance structure 41 is arranged on the movable iron core 40, the cambered surface of the first contact end of the correcting portion is abutted to the sealing portion 50, and the plane of the second contact end is abutted to the buffer member 70. By the arrangement, the pressure difference between the two ends of the movable iron core 40 can be reduced, so that the movable iron core 40 can stably and quickly move in the shell 20; moreover, in the prior art, in order to ensure the rapid flow of the fluid, the diameter of the movable iron core 40 is usually reduced, the guiding effect of the casing 20 on the movable iron core 40 is weakened, and the movable iron core 40 is unbalanced in the up-down moving process, in the present application, the balance structure 41 is additionally arranged to avoid reducing the diameter of the movable iron core 40, and then the balanced movement of the movable iron core 40 in the casing 20 can be ensured. By adopting the structure, unbalanced force applied to the plane of the second contact end of the correcting part enables the correcting part to rotate and transmits the force to the abutting position of the cambered surface of the first contact end and the sealing part 50, and the abutting position is constantly kept above the valve port 11, so that the force can be concentrated on the contact position of the first contact end and the sealing part 50, and finally, the acting force can be uniformly distributed on the sealing part 50, thereby ensuring that the sealing part 50 can completely block the valve port 11, avoiding generating gaps when the sealing part 50 contacts with the valve port 11, and further reducing the possibility of inner leakage of the electromagnetic valve.

As shown in fig. 2, the correcting portion includes a first pad 61, the first pad 61 has a first end and a second end that are opposite to each other, the first end of the first pad 61 has an arc surface, and the second end of the first pad 61 has a flat surface. A part of the second end of the first gasket 61 may be a plane, or the whole second end of the first gasket 61 may be a plane. The first end of the first gasket 61 abuts against the sealing portion 50, the second end of the first gasket 61 abuts against the buffer member 70, the first gasket 61 can transmit unbalanced force provided by the buffer member 70 to the abutting position of the cambered surface of the first gasket 61 and the sealing portion 50, and the abutting position is kept above the valve port 11 at all times, so that the force transmitted to the sealing portion 50 can be balanced, the sealing portion 50 can be ensured to fully block the valve port 11, internal leakage is avoided, and meanwhile, the structure is simple and convenient to install.

Specifically, the middle portion of the first gasket 61 protrudes toward the valve port 11, a side of the middle portion of the first gasket 61 facing the valve port 11 forms a curved surface, and a side of the first gasket 61 away from the valve port 11 has a flat surface. The side of the first gasket 61 away from the valve port 11 may be entirely flat, or a part of the first gasket 61 away from the valve port 11 may be flat. In this application, first gasket 61 adopts stamping forming for the middle part of first gasket 61 is protruding towards one side of valve port 11, and the periphery of first gasket 61 is planar structure, and planar structure can be with the cambered surface transitional coupling of first gasket 61. With this arrangement, the deflection range of the first gasket 61 on the sealing portion 50 can be reduced, so that the contact position of the arc surface of the first gasket 61 and the sealing portion 50 can be kept above the valve port 11 at any time, the unbalanced force provided by the cushion member 70 can be uniformly transmitted to the sealing portion 50, and the sealing effect of the sealing portion 50 on the valve port 11 can be ensured.

The sealing portion 50 includes a flat gasket 51 and a sealing gasket 52, the sealing gasket 52 is disposed near the valve port 11, one end of the flat gasket 51 abuts against the sealing gasket 52, and the other end of the flat gasket 51 abuts against the arc surface of the first contact end. The first gasket 61 transmits the force to the flat gasket 51 and then to the seal portion 50. Specifically, the sealing portion 50 may include a flat gasket 51 and a sealing gasket 52, in order to ensure the sealing performance of the sealing portion 50 to the valve port 11, the sealing gasket 52 generally uses a material with certain elasticity, the flat gasket 51 is disposed on a side of the sealing gasket 52 away from the valve port 11, and the flat gasket 51 is made of a non-elastic material, so that the force of the buffer member 70 is further and uniformly transmitted to the sealing portion 50, and meanwhile, the flat gasket is disposed to prevent the cambered surface of the first gasket 61 from directly acting on the sealing portion 50 to generate stress concentration, so that the sealing portion 50 can be protected, and the service life of the sealing portion 50 is prolonged.

As shown in fig. 9 and 10, the balancing structure 41 includes a balancing groove or a cut surface. The balance structure 41 may be a balance groove, a tangent plane or a plurality of balance grooves, or a plurality of tangent planes, and the balance structure 41 may also include at least one balance groove or at least one tangent plane. So set up, can increase the area of fluid circulation passageway between movable iron core 40 and the casing 20, the fluidic circulation of being convenient for to be convenient for move reciprocating of iron core 40, simultaneously, move clearance fit between iron core 40 and the casing 20, so can avoid moving the clearance between iron core 40 and the casing 20 too big, guarantee the guide effect of casing 20 to moving iron core 40, avoid moving iron core 40 and produce at the removal in-process and rock. As shown in fig. 11, a communication hole may be provided in an end surface of the movable iron core 40, and the communication hole may extend from one end of the movable iron core 40 to the other end of the movable iron core 40 to communicate with the inner cavity of the valve body 10. Through setting up the intercommunicating pore, can guarantee casing 20 to the guide effect of moving iron core 40, guarantee the stability that moves iron core 40 and remove to can balance the pressure differential at moving iron core 40 both ends through the intercommunicating pore, make iron core 40 can adjust valve mouth department flow fast, accurately.

Further, the solenoid valve still includes balanced hole 80, and the one end and the chamber intercommunication that holds of balanced hole 80, the other end of balanced hole 80 run through the lateral wall of movable iron core 40. With this arrangement, the fluid between the plunger 40 and the housing 20 can be communicated with the fluid between the accommodating chambers, so that the pressure inside the housing 20 is kept the same, and the sealing part 50 can be moved in the accommodating chambers conveniently.

Specifically, the balancing hole 80 is connected with the balancing structure 41. So set up, further guaranteed the pressure differential at movable iron core 40 both ends, be convenient for movable iron core 40 quick travel in casing 20, further improve the speed of ooff valve.

As shown in fig. 3 and 4, a second embodiment of the present invention provides a solenoid valve, which is different from the first embodiment in that: the correction portion comprises a first connecting section 621 and a second connecting section 622 which are sequentially connected along the axial direction, one end, far away from the second connecting section 622, of the first connecting section 621 is an arc surface, the other end of the first connecting section 621 is a plane, the second connecting section 622 is a cylindrical structure, the cross-sectional size of the second connecting section 622 is smaller than that of the first connecting section 621, the buffer piece 70 can be a buffer spring, and the buffer spring is sleeved on the second connecting section 622 and abutted to the plane of the first connecting section 621. The cross-sectional dimension of the second connecting section 622 is smaller than the planar dimension of the first connecting section 621, so that the buffer spring is abutted on the first connecting section 621, and the force is transmitted to the correcting portion by the buffer spring. The first connecting end can be a spherical structure, the difference between the diameter of the first connecting section 621 and the diameter of the accommodating cavity is 0.2mm to 0.3mm, and when the difference between the diameter of the first connecting section 621 and the diameter of the accommodating cavity is less than 0.2mm, the rotation of the correcting part is not facilitated; when the diameter of the first connecting section 621 is different from the diameter of the accommodating cavity by more than 0.3mm, the abutting part of the first connecting section 621 and the sealing part 50 is easy to move to the outer side of the projection of the valve port 11 on the sealing part 50 in the rotating process, and the possibility of generating a gap between the sealing part 50 and the valve port 11 is increased. Optionally, the diameter of the first connecting section 621 may be different from the diameter of the receiving cavity by 0.2mm, 0.25mm or 0.3mm, in this application, the diameter of the first connecting section 621 is different from the diameter of the receiving cavity by 0.2 mm. By adopting the structure, when the force applied to the first connecting section is unbalanced, the cambered surface of the second connecting section 622 rotates, and the second connecting section 622 is arranged in the buffer spring in a penetrating manner, so that the rotation of the correcting part can be limited, and the abutting part of the cambered surface of the second connecting section 622 and the sealing part 50 is ensured to be positioned above the valve port 11 at all times, so that the unbalanced force can be uniformly transmitted to the sealing part 50, and the sealing effect of the sealing part 50 on the valve port 11 is ensured.

As shown in fig. 5 and fig. 6, a third embodiment of the present invention provides a solenoid valve, which is different from the first embodiment in that: the correcting portion includes a second shim 63 and a ball 64, the second shim 63 has a first escape portion on a side facing the valve port 11, the ball 64 is partially located in the first escape portion, a side of the ball 64 remote from the second shim 63 abuts against the sealing portion 50, and the cushion material 70 abuts against a side of the second shim 63 remote from the ball 64. The first avoidance part can be a first avoidance hole or an arc surface structure. The cushion member 70, the second gasket 63, and the balls 64 are sequentially in contact with the sealing portion 50, and the cushion member 70 can transmit unbalanced force to the second gasket 63, so that the second gasket 63 is inclined, the first escape portion can limit the balls 64, and the balls 64 are constantly positioned above the gasket, thereby transmitting force to the sealing portion 50 and balancing the sealing portion 50.

The balls 64 may directly contact the seal 50, or a gasket may be added between the seal 50 and the balls 64. In this application, the correcting part further includes a third gasket 65, the third gasket 65 is located between the second gasket 63 and the sealing part 50, the third gasket 65 has an avoiding hole, a diameter of the avoiding hole is smaller than a diameter of the ball 64, and the ball 64 partially passes through the avoiding hole. Thus, the ball 64 can be further restricted, the ball 64 is prevented from rolling on the sealing portion 50, and the ball 64 can transmit force to the third gasket 65, so that the force can be transmitted to the third gasket 65, and the effect of balancing the ball 64 is improved. Meanwhile, the balls 64 can be prevented from directly contacting the sealing part 50, and the sealing part 50 can be prevented from being damaged.

As shown in fig. 7 and 8, a fourth embodiment of the present invention provides a solenoid valve, which is different from the first and second embodiments in that: the correcting portion includes a second shim 63 and a ball 64, a side of the second shim 63 facing the valve port 11 has a cambered surface structure, the ball 64 is partially located in the first escape portion, a side of the ball 64 away from the second shim 63 abuts against the sealing portion 50, and the cushion member 70 abuts against a side of the second shim 63 away from the ball 64. The balls 64 transfer the force to the flat gasket 51, and the flat gasket 51 transfers the force to the seal 52. With the arrangement, force is further uniformly transmitted to the sealing gasket 52, and the ball 64 is prevented from directly acting on the sealing gasket 52, so that the sealing gasket 52 is prevented from being damaged.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …", "above … …", "above … …, on a surface", "above", and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A solenoid valve, characterized in that it comprises:

a valve body (10), the valve body (10) having a valve port (11);

a housing (20) fixed to the valve body (10), the housing (20) having a first end and a second end disposed opposite to each other, the first end of the housing (20) being disposed adjacent to the valve port (11);

a stationary core (30) disposed within the housing (20) and located at a second end of the housing (20);

the movable iron core (40) is movably arranged in the shell (20), a balance structure (41) is arranged on the outer side wall of the movable iron core (40), the balance structure (41) extends from one end of the movable iron core (40) to the other end of the movable iron core (40), and an accommodating cavity is formed in one end, close to the valve port (11), of the movable iron core (40);

a sealing part (50) movably arranged in the accommodating cavity, wherein the sealing part (50) is used for sealing or opening the valve port (11);

the correcting part is arranged in the accommodating cavity in a deflectable manner, is positioned at one end, far away from the valve port (11), of the sealing part (50), and is provided with a first contact end and a second contact end which are oppositely arranged, the end face of the first contact end is provided with an arc face, the end face of the second contact end is provided with a plane, and the arc face of the first contact end is abutted to the sealing part (50);

the buffer piece (70) is arranged in the accommodating cavity and is positioned between the correcting part and the movable iron core (40), one end of the buffer piece (70) is abutted to the plane of the second contact end, and the other end of the buffer piece (70) is abutted to the inner wall of the accommodating cavity.

2. The solenoid valve of claim 1, wherein the correction portion comprises a first shim (61), the first shim (61) having a first end and a second end disposed opposite to each other, the first end of the first shim (61) having the arc surface, and the second end of the first shim (61) having the flat surface.

3. A solenoid valve according to claim 2, characterized in that the middle of the first gasket (61) is convex towards the valve port (11), the side of the middle of the first gasket (61) facing the valve port (11) forms the arc, and the side of the first gasket (61) facing away from the valve port (11) has the flat surface.

4. The electromagnetic valve according to claim 1, wherein the correcting portion comprises a first connecting section (621) and a second connecting section (622) which are sequentially connected in the axial direction, one end of the first connecting section (621) far away from the second connecting section (622) is the cambered surface, the other end of the first connecting section (621) is the plane, the second connecting section (622) is of a cylindrical structure, the cross-sectional dimension of the second connecting section (622) is smaller than the planar dimension of the first connecting section (621), the buffer member (70) is a buffer spring, and the buffer spring is sleeved on the second connecting section (622) and is abutted to the plane.

5. The electromagnetic valve according to claim 1, wherein the correcting portion includes a second gasket (63) and a ball (64), a side of the second gasket (63) facing the valve port (11) has a first escape portion, the ball (64) is partially located in the first escape portion, a side of the ball (64) remote from the second gasket (63) abuts the sealing portion (50), and the cushion member (70) abuts a side of the second gasket (63) remote from the ball (64).

6. The solenoid valve according to claim 5, characterized in that said correction portion further comprises a third gasket (65), said third gasket (65) being located between said second gasket (63) and said sealing portion (50), said third gasket (65) having an escape hole, the diameter of which is smaller than the diameter of said ball (64), said ball (64) partially passing through said escape hole.

7. The solenoid valve according to any one of claims 1 to 5, characterized in that the sealing portion (50) comprises a flat gasket (51) and a sealing gasket (52), the sealing gasket (52) being arranged close to the valve port (11), one end of the flat gasket (51) abutting the sealing gasket (52), the other end of the flat gasket (51) abutting the arc surface of the first contact end.

8. The solenoid valve according to claim 1, characterized in that said balancing structure (41) comprises a balancing groove or a chamfer.

9. The solenoid valve according to claim 8, characterized in that it further comprises a balancing hole (80), one end of said balancing hole (80) is communicated with said containing cavity, and the other end of said balancing hole (80) penetrates through the outer side wall of said plunger (40).

10. Solenoid valve according to claim 9, characterized in that said balancing hole (80) is connected with said balancing structure (41).

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