CN212775830U

CN212775830U - Electromagnetic valve

Info

Publication number: CN212775830U
Application number: CN202020893839.3U
Authority: CN
Inventors: 张白; 毛建东
Original assignee: North Minzu University
Current assignee: North Minzu University
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2021-03-23
Anticipated expiration: 2030-05-25

Abstract

The utility model relates to a solenoid valve, including valve body, electromagnetic mechanism and angle control mechanism, the valve body sets up import and export, import and export are linked together through the internal flow channel that sets up in the valve body, be provided with the case in the internal flow channel, the case passes through the valve rod and links to each other with angle control mechanism, electromagnetic mechanism is used for driving angle control mechanism action when receiving the pulse signal of telecommunication, angle control mechanism is used for driving the valve rod to rotate the angle that sets for under electromagnetic mechanism's drive, and lock the valve rod when electromagnetic mechanism cuts off the power supply, in order to restrict the valve rod and rotate, the case is used for rotating under the drive of valve rod, in order to adjust; the electromagnetic valve has the advantages of simple and compact structure and convenience in manufacturing, the state of the valve rod can be changed and maintained only after the pulse electric signal is emitted instantly, continuous electrification is not needed, the heat dissipation is facilitated while the electric energy is saved, and the problems of heating and the like caused by continuous electrification can be effectively avoided.

Description

Electromagnetic valve

Technical Field

The utility model relates to the technical field of valves, concretely relates to pulsed solenoid valve.

Background

The electromagnetic valve is an automatic basic element for controlling fluid by electromagnetism, belongs to a common actuator, and is mainly used for adjusting parameters such as direction, flow rate, speed and the like of a medium in an industrial control system. The solenoid valve can be matched with different circuits to realize expected control, and the precision and flexibility of the control can be ensured. The solenoid valves can be divided into many types according to the difference of structure and specific function, the most common are one-way valves, safety valves, direction control valves, speed regulating valves and the like, and different solenoid valves play roles at different positions of a control system.

In the conventional technical scheme at present, the on-off of a circuit is usually utilized to control the existence of magnetic force, so that the control of a valve rod is realized. But need last circular telegram in order to maintain magnetic force when open mode or closed state, guarantee that the valve rod is in the position of opening the valve all the time or the position of closing the valve, last circular telegram, not only the energy consumption is great, is not conform to energy-concerving and environment-protective development theory at present, still has serious phenomenon of generating heat, appears coil short circuit easily, the circuit break situation, can accelerate components and parts ageing speed moreover, seriously influences life.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to improve exist not enough among the prior art, provide an impulse type solenoid valve, simple structure is compact, be convenient for make, only just can change and maintain the state of valve rod after transmitting pulse electrical signal in the twinkling of an eye, need not to last circular telegram, does benefit to the heat dissipation when saving the electric energy to can effectively avoid the scheduling problem that generates heat because of lasting circular telegram arouses.

The utility model adopts the technical proposal that:

the first aspect of the utility model is to solve the problem that the current valve needs to be continuously electrified in the working process, and provides a solenoid valve, which comprises a valve body, an electromagnetic mechanism and an angle control mechanism, wherein the valve body is provided with an inlet and an outlet, the inlet and the outlet are communicated through an internal flow passage arranged in the valve body, a valve core is arranged in the internal flow passage, the valve core is connected with the angle control mechanism through a valve rod, the electromagnetic mechanism is connected with the angle control mechanism, wherein,

the electromagnetic mechanism is used for driving the angle control mechanism to act when receiving a pulse electric signal,

the angle control mechanism is used for driving the valve rod to rotate by a set angle under the driving of the electromagnetic mechanism and locking the valve rod when the electromagnetic mechanism is powered off so as to limit the valve rod to rotate,

the valve core is driven by the valve rod to rotate so as to adjust the opening of the valve body. In the scheme, the electromagnetic mechanism generates magnetic force when receiving a pulse electric signal, the magnetic force is used for driving the angle control mechanism to act once, the angle control mechanism drives the valve rod to rotate by a set angle in the action process of one time, thereby driving the valve core to rotate by a set angle, and after the angle control mechanism completes one action, the valve rod can be locked, so that the valve rod and the valve core can be stably kept at the required positions to keep the opening degree of the valve unchanged, in actual use, the pulse electromagnetic valve can drive the rotating angle of the valve rod to reach the required valve opening degree by sending a plurality of pulse signals to the pulse electromagnetic valve, thereby not only realizing the regulation of the flow rate of water, in addition, in the actual process of the pulse type electromagnetic valve, continuous electrification is not needed, the electric energy is saved, meanwhile, heat dissipation is facilitated, and therefore the problems of heating and the like caused by continuous electrification can be effectively avoided.

Preferably, the valve core is of a disc-shaped structure. The valve core is connected with the valve rod, and the valve rod drives the valve core to rotate, so that the opening degree of the internal flow passage is changed, and the pulse type electromagnetic butterfly valve is formed.

In order to facilitate sealing and packaging, the electromagnetic valve further comprises a shell, wherein the shell is fixed in the valve body, and the electromagnetic mechanism and the angle control mechanism are respectively fixed in the shell.

Preferably, electromagnetic mechanism include the electro-magnet, with the armature of electro-magnet looks adaptation, armature with angle control mechanism links to each other, the electro-magnet include the iron core and twine in the coil of iron core, the both ends of coil respectively with set up in two control wiring end electricity intercommunications of casing. When a pulse electric signal passes through the coil, the electromagnet generates magnetic force, and the armature is arranged at one end of the iron core so as to act under the action of the magnetic force to drive the angle control mechanism.

Preferably, the angle control mechanism comprises a sliding part, a limiting sleeve and a pushing part, wherein,

the sliding part comprises a sliding rod and a plurality of sliding claws arranged at one end of the sliding rod along the circumferential direction of the sliding rod, one end of each sliding claw is a first guide surface which is obliquely arranged, the sliding rod is used for connecting a valve rod,

the limiting sleeve is fixed on the shell and is of a cylindrical structure, one end of the limiting sleeve is provided with a plurality of restraining parts for restraining the sliding claws, the restraining parts are respectively distributed along the circumferential direction of the limiting sleeve,

the pushing part comprises a push rod with a cylindrical structure, one end of the push rod is obliquely provided with a plurality of second guide surfaces, the second guide surfaces are matched with the first guide surfaces, the second guide surfaces are distributed along the circumferential direction of the push rod respectively, the armature is fixed to the pushing part, and when the sliding claw is clamped in the constraint part, the first guide surfaces are only contacted with the parts of the second guide surfaces. In a pulse electrical signal, the electromagnetic mechanism and the angle control mechanism respectively act once, and after the pulse electrical signal passes through, a sliding claw in the sliding rod can rotate from one constraint part to an adjacent constraint part, so that the rotation angle of the sliding rod is equal to the included angle between the two adjacent constraint parts, and the rotation angle of the valve core of the electromagnetic valve under the action of a single pulse signal can be accurately set through reasonably setting the size of the central angle, thereby achieving the purpose of accurately controlling the opening; by sending a plurality of pulse signals to the pulse type electromagnetic valve, an electromagnetic mechanism and an angle control mechanism in the pulse type electromagnetic valve can act for a plurality of times, so that the actual opening degree of the valve core reaches the required opening degree; in addition, before and after the angle control mechanism acts, the sliding claws are clamped in the corresponding constraint parts to achieve the purpose of constraining the sliding rod, the valve rod and the valve core, so that continuous electrification is not needed in the actual use process of the pulse type electromagnetic valve, electric energy is saved, heat dissipation is facilitated, and the problems of heating and the like caused by continuous electrification can be effectively avoided.

In order to accurately control the angle set by the angle control mechanism to drive the valve rod to rotate in a single action process, the constraint part preferably comprises a clamping groove arranged at the end part of the limiting sleeve and a constraint surface arranged between two adjacent clamping grooves, the constraint surface is obliquely arranged, and the oblique direction of the constraint surface is opposite to that of the second guide surface. Make binding face and second guide face can constitute the V-arrangement contained angle to after the push rod pushed the draw-in groove with the sliding jaw, the sliding jaw can block in the V-arrangement contained angle to can rotate along the binding face along with the promotion of push rod, both can reach the purpose that the control slide bar is at the uniform velocity pivoted, can prevent effectively again that the sliding jaw from breaking away from the second guide face.

In order to realize the function of automatic reset after power failure, the power-off device further comprises a reset spring, wherein the reset spring is sleeved on the sliding rod or arranged at one end of the sliding rod, one end of the reset spring is fixed on the shell, the other end of the reset spring is in contact with the sliding rod, and the reset spring is used for clamping the sliding claw into the constraint part;

or, still include reset spring one and reset spring two, the reset spring two set up in the slide bar or set up in the one end of slide bar, the one end of reset spring two is fixed in the casing, the other end with the slide bar contacts for drive sliding jaw card is gone into the restricted portion, the reset spring one set is located promotion portion is used for providing the edge for the push rod and keeps away from the elasticity of stop collar direction. The first reset spring and the second reset spring are respectively adopted to respectively drive the push rod and the slide rod to reset, so that efficient and rapid resetting is facilitated, and the electromagnetic mechanism and the angle control mechanism can continuously act.

In order to prevent the push rod from rotating relative to the limiting sleeve, a plurality of guide grooves or guide keys are further arranged on the outer side of the push rod, the inner wall of the limiting sleeve is provided with the guide keys matched with the guide grooves or the guide grooves matched with the guide keys, and the push rod is restrained by matching of the guide grooves and the guide keys to prevent the push rod from rotating;

or the pushing part further comprises an extension rod and a first guide part arranged on the shell, the extension rod is a rod with a non-circular cross section, the first guide part is matched with the extension rod, the extension rod is arranged on the push rod or is of an integral structure, and forms a moving pair with the first guide part, the armature is fixed on the extension rod, and the first guide part is a guide cylinder or a guide groove. So as to restrain the pushing part from moving only in the direction of the axis thereof.

In order to enable the sliding rod to move strictly according to the length direction of the sliding rod, the shell is further provided with a second guide part, the second guide part is a guide cylinder or a guide groove, the cross section of the sliding rod is circular, the second guide part is matched with the sliding rod, and the sliding rod and the second guide part form a moving pair. So that the slide rod can not only move linearly relative to the housing, but also rotate relative to the slide rod.

The utility model discloses the transmission problem between slide bar and the valve rod is to be solved in the second aspect for the slide bar both can rotate and axial displacement, can rotate drive valve rod simultaneously, and scheme one still includes the sliding sleeve, the sliding part is still including setting up in the gag lever post of slide bar one end, the sliding sleeve is provided with through the through-hole of gag lever post, the gag lever post set up in the through-hole to constitute with the sliding sleeve and remove vice, just the cross section of gag lever post is non-circular face, the through-hole with gag lever post looks adaptation, the sliding sleeve with the valve rod links to each other. Because the slide bar passes through the gag lever post and constitutes the sliding pair with the sliding sleeve for in the action process of angle control mechanism, the sliding part can remove for the sliding sleeve, and because the cross section of gag lever post is non-circular face, makes the sliding part can drive the sliding sleeve and rotate together, thereby reaches the purpose of driving the valve rod pivoted.

Scheme two, still include the sliding sleeve, the sliding sleeve is provided with through-hole through the slide bar, just be provided with a plurality of guide ways or the guide key that sets up along sliding sleeve the central axis direction in the through-hole, the lateral surface of slide bar one end be provided with a plurality of with the guide key of guide way looks adaptation or with the guide way of guide key looks adaptation, the sliding sleeve with the valve rod links to each other. Through the cooperation of guide way and direction key, not only make the sliding sleeve can constitute the sliding pair with sliding part for the slide bar can move for the sliding sleeve, can make the slide bar can drive the sliding sleeve and rotate together moreover, thereby reach drive valve rod pivoted purpose.

In the actual use process of the pulse type electromagnetic valve, two processes of opening and closing exist, so that the opening/closing and the opening degree are conveniently controlled, and the response speed is improved, the pulse type electromagnetic valve preferably comprises two sets of electromagnetic mechanisms and an angle control mechanism, wherein the two electromagnetic mechanisms are an electromagnetic mechanism I and an electromagnetic mechanism II respectively, the two sets of angle control mechanisms are an angle control mechanism I and an angle control mechanism II respectively, the electromagnetic mechanism I is connected with the angle control mechanism I, and the angle control mechanism I is connected with a valve rod I fixed on a valve core and used for driving the valve rod I to rotate forwards; the second electromagnetic mechanism is connected with the second angle control mechanism, the second angle control mechanism is connected with a second valve rod fixed on the valve core, and the first valve rod and the second valve rod are collinear. The electromagnetic valve is controlled to be opened and closed respectively by arranging two sets of electromagnetic mechanisms, so that accurate control is facilitated, and meanwhile, the response speed is improved.

Because electromagnetism mechanism one and two are used for driving plug corotation and reversal respectively of electromagnetism mechanism, and for making in this pulsed solenoid valve two sets of angle control mechanism not mutual interference at the action in-process, it is further, the sliding part still includes one-way clutch, the slide bar includes first section and second section, the sliding pawl set up in first section, the second section with the sliding sleeve cooperatees, first section passes through one-way clutch with the second section links to each other, first section is used for driving the second section along a direction unidirectional rotation through one-way clutch, works as the second section along with during the opposite direction's direction rotates, one-way clutch skids. Therefore, the two angle control mechanisms do not interfere with each other in the action process, and the opening/closing of the valve can be effectively realized.

Preferably, the one-way clutch is preferably a tooth clutch, such as a helical tooth clutch.

Theoretically, the restriction portion's that the stop collar set up along the circumferencial direction figure is more, and under the effect of single pulse signal of telecommunication, case pivoted angle is more less, and the precision is higher, nevertheless in reality, because the reason of machining precision and stop collar size parameter, the figure of restriction portion can't be too many, the utility model discloses the third aspect will be solved and is improved the flow control precision problem of this solenoid valve, and is further, the valve rod with still be provided with drive mechanism between the angle control mechanism, drive mechanism's one end with the valve rod links to each other, the sliding sleeve set up in drive mechanism's the other end, drive mechanism's drive ratio is greater than 1. The speed reduction transmission mechanism is preferentially adopted so as to achieve the purposes of reducing the rotating speed and increasing the torque, the flow regulation precision of the pulse type electromagnetic valve can be effectively improved, and the two sets of electromagnetic mechanisms and the angle control mechanism can be arranged on the same side of the valve body through the reasonable arrangement transmission mechanism, so that the structure of the whole electromagnetic valve is more compact, and the actual installation and use are facilitated.

Preferably, the transmission mechanism can be one or two of a gear reduction transmission mechanism and a worm wheel-worm reduction transmission mechanism.

Compared with the prior art, use the utility model provides a pair of solenoid valve, simple structure is compact, the manufacturing of being convenient for, only just can change and maintain the state of valve rod after transmitting pulse electrical signal in the twinkling of an eye, need not to last circular telegram, does benefit to the heat dissipation when saving the electric energy to can effectively avoid the scheduling problem that generates heat because of lasting circular telegram arouses.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a sliding portion in a pulse type electromagnetic valve provided in embodiment 1 of the present invention.

Fig. 2 is a right side view of fig. 1.

Fig. 3 is a schematic structural view of a position-limiting sleeve in the pulse-type electromagnetic valve provided in embodiment 1 of the present invention.

Fig. 4 is a schematic view of a partial structure of a push rod in the pulse type electromagnetic valve provided in embodiment 1 of the present invention.

Fig. 5 is a left side view of fig. 4.

Fig. 6 shows one of the states of the angle control mechanism in the pulse-type electromagnetic valve provided in embodiment 1 of the present invention, at this time, the sliding pawl is clamped in the clamping groove and is driven by the push rod to move outwards along the clamping groove.

Fig. 7 shows a second state of the angle control mechanism in the pulse-type electromagnetic valve provided in embodiment 1 of the present invention, in which the push rod pushes the sliding claw out of the slot, the end of the sliding claw is clamped between the first guide surface and the constraint surface, and the sliding rod moves and rotates synchronously under the push of the push rod.

Fig. 8 shows a third state of the angle control mechanism in the pulse-type electromagnetic valve according to embodiment 1 of the present invention, in which the second guide surface is completely separated from the restriction portion, and the slide rod continues to rotate to the position corresponding to the next slot by the cooperation of the first guide surface and the second guide surface.

Fig. 9 shows an embodiment of the present invention, wherein in the pulse-type electromagnetic valve provided in embodiment 1, the state of the angle control mechanism is four, the electromagnetic mechanism is powered off, the push rod automatically resets, the slide rod also automatically resets, and the slide claw is clamped into the corresponding clamping groove.

Fig. 10 is a schematic partial structural view of a pulse-type electromagnetic valve provided in embodiment 1 of the present invention.

Fig. 11 is a view a-a of fig. 10.

Fig. 12 is a schematic structural diagram of a pulse-type electromagnetic valve provided in embodiment 1 of the present invention.

Fig. 13 is a schematic structural diagram of a pulse-type electromagnetic valve provided in embodiment 2 of the present invention.

Fig. 14 is a schematic partial structural view of a pulse-type electromagnetic valve provided in embodiment 5 of the present invention.

Description of the drawings

The electromagnetic actuator comprises a shell 101, an iron core 102, a coil 103, an armature 104, a first return spring 105, a control terminal 106, a first guide part 107, a first electromagnetic mechanism 108, a second electromagnetic mechanism 109,

Angle control mechanism 200, sliding part 201, slide rod 202, sliding pawl 203, first guide surface 204, second return spring 205, stopper 206, restraining part 207, notch 208, restraining surface 209, pushing part 210, push rod 211, second guide surface 212, second guide part 213, extension rod 214, sliding sleeve 215, through hole 216, guide groove 217, guide key 218, first angle control mechanism 219, second angle control mechanism 220, first section 221, second section 222, angle control mechanism 220, and the like,

Valve body 300, inlet 301, outlet 302, internal flow passage 303, valve core 304, valve rod 305, valve rod one 306, valve rod two 307, valve rod two,

A one-way clutch 400,

A drive gear 501, a driven gear 502, a gear 503,

State detection contact 601, fixed contact 602, detection terminal 603.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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 components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1 to 10, in the present embodiment, a pulse-type solenoid valve is provided, which includes a valve body 300, an electromagnetic mechanism and an angle control mechanism 200, wherein the valve body 300 is provided with an inlet 301 and an outlet 302, the inlet 301 and the outlet 302 are communicated through an internal flow passage 303 arranged in the valve body 300, a valve core 304 is arranged in the internal flow passage 303, the valve core 304 is connected with the angle control mechanism 200 through a valve rod 305, the electromagnetic mechanism is connected with the angle control mechanism 200, wherein,

the electromagnetic mechanism is used for generating magnetic force when receiving the pulse electric signal, and drives the angle control mechanism 200 to act through the magnetic force (one pulse electric signal acts once),

the angle control mechanism 200 is used for driving the valve rod 305 to rotate by a set angle under the driving of the electromagnetic mechanism, and locking the valve rod 305 when the electromagnetic mechanism is powered off (after a pulse electric signal passes), so as to limit the rotation of the valve rod 305,

the valve core 304 is driven by the valve rod 305 to rotate so as to adjust the opening degree of the valve body 300, thereby achieving the purpose of adjusting the flow rate of the water. In this embodiment, when receiving the pulse electrical signal, the electromagnetic mechanism generates a magnetic force, and drives the angle control mechanism 200 to operate once by using the magnetic force, the angle control mechanism 200 drives the valve rod 305 to rotate by a set angle in one operation process, thereby driving the valve plug 304 to rotate by a set angle, and after the angle control mechanism 200 completes one operation, the valve rod 305 can be locked, so that the valve rod 305 and the valve core 304 can be stably kept at the required positions, the opening degree of the valve is kept unchanged, in practical use, by sending a plurality of pulse signals to the pulse type electromagnetic valve, the valve rod 305 can be driven to rotate by a required angle to reach a required valve opening degree, so that the regulation of the water flow can be realized, in addition, in the actual process of the pulse type electromagnetic valve, continuous electrification is not needed, the electric energy is saved, meanwhile, heat dissipation is facilitated, and therefore the problems of heating and the like caused by continuous electrification can be effectively avoided.

As shown in fig. 10, in the present embodiment, preferably, the valve core 304 is in a disc-shaped structure, the valve core 304 is connected to the valve rod 305, and the valve rod 305 drives the valve core 304 to rotate, so as to change the opening degree of the internal flow passage 303, it can be understood that when the valve core 304 is perpendicular to the length direction of the internal flow passage 303, the electromagnetic valve is in a completely closed state, and when the valve core 304 is parallel to the length direction of the internal flow passage 303, the electromagnetic valve reaches a maximum opening degree, and because the valve core 304 in the present embodiment is in a disc-shaped structure, the electromagnetic valve can form a pulse-type electromagnetic butterfly.

In this embodiment, the lower end of the valve core 304 is movably connected to the valve body 300 through a vertically arranged rotating shaft, the upper end of the valve core 304 is connected to a vertically arranged valve rod 305, the valve rod 305 is movably connected to the valve body 300, so that the valve core 304 can be driven by the angle control mechanism 200 to rotate relative to the valve body 300, as shown in the figure, in order to improve the stress, the rotating shaft and the valve rod 305 are respectively arranged on one side of the valve core 304.

For example, in the present embodiment, the electromagnetic mechanism includes an electromagnet and an armature 104 adapted to the electromagnet, the armature 104 is connected to the angle control mechanism 200, the electromagnet may be an existing electromagnet, for example, the electromagnet includes an iron core 102 and a coil 103 wound around the iron core 102, when a pulse electrical signal passes through the coil 103, the electromagnet generates a magnetic force, and the armature 104 is disposed at one end of the iron core 102 so as to act under the magnetic force to drive the angle control mechanism 200.

In order to facilitate sealing and packaging of the electromagnetic mechanism, as shown in fig. 10, in the present embodiment, a housing 101 is further included, the housing 101 is fixed to the valve body 300, and the electromagnetic mechanism is fixed in the housing 101; in order to facilitate wiring or remote control in actual use, in a further scheme, the housing 101 is further provided with two control terminals 106, as shown in fig. 10, the two control terminals 106 are respectively electrically communicated with two ends of the coil 103, and in actual use, the two control terminals 106 can be conveniently connected with a transmitting device or a controller (such as a single chip microcomputer, a PLC, and the like) of a pulse electrical signal so as to form a closed loop.

By way of example, in the present embodiment, the angle control mechanism 200 includes a sliding portion 201, a position-limiting sleeve 206, and a pushing portion 210, as shown in fig. 1 to 10, wherein,

the sliding part 201 comprises a sliding rod 202, a plurality of sliding pawls 203 arranged at one end of the sliding rod 202 and arranged along the circumferential direction of the sliding rod 202, one end of the sliding pawls 203 is a first guide surface 204 arranged obliquely, as shown in fig. 1 and 2, the sliding rod 202 is used for connecting a valve rod 305,

the limiting sleeve 206 is fixed to the housing 101, the limiting sleeve 206 is a cylindrical structure, one end of the limiting sleeve 206 is configured with a plurality of restraining portions 207 for restraining the sliding pawls 203, each restraining portion 207 is distributed along the circumferential direction of the limiting sleeve 206, as shown in fig. 3,

the pushing portion 210 includes a push rod 211 having a cylindrical structure, one end of the push rod 211 is provided with a plurality of second guide surfaces 212 in an inclined manner, as shown in fig. 4 and 5, the second guide surfaces 212 are matched with the first guide surfaces 204, each of the second guide surfaces 212 is distributed along the circumferential direction of the push rod 211 and is connected end to end, the armature 104 is fixed to the pushing portion 210, and when the sliding pawl 203 is caught in the restraining portion 207, the first guide surfaces 204 are only in contact with portions of the second guide surfaces 212.

As shown in fig. 6 to 10, the working principle of the present angle control mechanism 200 is: initially, the sliding claw 203 at one end of the sliding rod 202 is clamped in the restraining part 207; when the electromagnet is powered on (a pulse electric signal), the push rod 211 drives the slide bar 202 to move relative to the limit sleeve 206 under the driving of the electromagnet, and the first guide surface 204 only contacts with the part of the second guide surface 212 before the sliding claw 203 is not separated from the constraint part 207, as shown in fig. 6, and the purpose of constraining the sliding claw 203 and preventing the sliding claw 203 from rotating is achieved; after the push rod 211 continues to move and the push sliding pawl 203 is disengaged from the constraining portion 207, that is, after the push sliding pawl exceeds the critical position of the end of the constraining portion 207, as shown in fig. 7, the purpose of unlocking is achieved, because the first guide surface 204 and the second guide surface 212 are both obliquely arranged, a component force in the circumferential direction is inevitably present between the two, and under the action of the component force, the sliding rod 202 moves relative to the stop collar 206 and also rotates relative to the stop collar 206, so as to drive the valve rod 305 and the valve core 304 to rotate; as push rod 211 continues to move; as shown in fig. 8, when the second guide surface 212 is completely exposed from the position-limiting sleeve 206, the sliding rod 202 can continue to rotate under the action of the component force and turn to a position corresponding to the adjacent constraining portion 207, so as to complete the rotation; after that, the electromagnet is powered off (the duration of the pulse electrical signal is over), the magnetic force disappears, the push rod 211 automatically returns to the original position, and meanwhile, the sliding pawl 203 is driven by the sliding rod 202 to automatically return to the original position and can be just clamped into the adjacent constraint part 207, as shown in fig. 9, so far, the actions of the electromagnetic mechanism and the angle control mechanism 200 in one pulse electrical signal are completed, that is, the electromagnetic mechanism and the angle control mechanism 200 respectively act once in one pulse electrical signal, and after one pulse electrical signal passes, the sliding pawl 203 in the sliding rod 202 rotates from one constraint part 207 to the adjacent constraint part 207, so that the rotation angle of the sliding rod 202 is equal to the included angle between the two adjacent constraint parts 207, that is, the central angle corresponding to the constraint part 207, and by reasonably setting the size of the central angle, the rotation angle of the valve element 304 under the action of a single pulse signal of the electromagnetic valve can be accurately set, thereby achieving the purpose of accurately controlling the opening degree; by sending a plurality of pulse signals to the pulse type electromagnetic valve, the electromagnetic mechanism and the angle control mechanism 200 in the pulse type electromagnetic valve can act for a plurality of times, so that the actual opening degree of the valve core 304 reaches the required opening degree; in addition, before and after the angle control mechanism 200 acts, the sliding claws 203 are clamped in the corresponding constraint parts 207, so that the purpose of constraining the sliding rod 202, the valve rod 305 and the valve core 304 is achieved, continuous energization is not needed in the actual use process of the pulse type electromagnetic valve, electric energy is saved, heat dissipation is facilitated, and the problems of heating and the like caused by continuous energization can be effectively avoided.

In order to precisely control the angle set by the angle control mechanism 200 to drive the valve rod 305 to rotate in a single action, the restriction portion 207 has various embodiments, and preferably, the restriction portion 207 includes a clamping groove 208 arranged at the end of the limiting sleeve 206, and the clamping groove 208 may have a U-shaped structure so as to restrict and lock the sliding pawl 203 and prevent the sliding pawl 203 from rotating; as shown in fig. 3 and 6-10, in a preferred embodiment, the constraining portion 207 further includes a constraining surface 209 disposed between two adjacent card slots 208, the constraining surface 209 is disposed obliquely, and the oblique direction of the constraining surface 209 is opposite to the oblique direction of the second guiding surface 212, so that the constraining surface 209 and the second guiding surface 212 may form a V-shaped included angle, so that after the push rod 211 pushes the sliding pawl 203 out of the card slot 208, the sliding pawl 203 may be clamped in the V-shaped included angle and may rotate along the constraining surface 209 along with the push of the push rod 211, which may achieve the purpose of controlling the sliding rod 202 to rotate at a constant speed, and may effectively prevent the sliding pawl 203 from disengaging from the second guiding surface 212.

It can be understood that the number of the sliding pawls 203 may be determined according to actual requirements, and is usually greater than or equal to 1, for example, as shown in fig. 1 and fig. 2, the number of the sliding pawls 203 is 4, and the sliding pawls are respectively and uniformly arranged along the circumferential direction of the sliding rod 202; the restricting portions 207 need to be adapted to the number of the sliding pawls 203, and may be an integral multiple of the number of the sliding pawls 203, as shown in fig. 3, in this embodiment, the number of the restricting portions 207 is 8, and the restricting portions are respectively and uniformly arranged along the circumferential direction of the position limiting sleeve 206; the number of the second guide surfaces 212 provided on the push rod 211 needs to be adapted to the number of the constraining sections 207, and each constraining section 207 needs to correspond to one second guide surface 212, as shown in fig. 4 to 9.

As shown in fig. 6-10, in the present embodiment, the inner diameter of the position-limiting sleeve 206 is larger than the outer diameter of the slide bar 202 and smaller than the sum of the outer diameter of the slide bar 202 and the thickness of the slide jaw 203, so that the slide jaw 203 can be clamped into the restriction portion 207, and the outer diameter of the push rod 211 is smaller than the inner diameter of the position-limiting sleeve 206, so that the push rod 211 can push the slide bar 202 to move through the position-limiting sleeve 206.

Since in the actual working process, the sliding rod 202 and the push rod 211 both need to be automatically reset after power failure, in an embodiment, the slide rod 202 further includes a return spring, the return spring is sleeved on the sliding rod 202 or is disposed at one end of the sliding rod 202, one end of the return spring is fixed to the housing 101, the other end of the return spring is in contact with the sliding rod 202 (not fixedly connected to interfere with rotation of the sliding rod 202), the return spring is used to enable the sliding pawl 203 to be clamped into the constraint portion 207 and to be pressed tightly in the constraint portion 207, and when the sliding pawl 203 is clamped into the constraint portion 207, the push rod 211 can be just extruded to the initial position (i.e., the position in the power failure state), so that not only the automatic resetting function can be achieved, but also the sliding pawl 203 can be stably locked in the constraint portion 207, and the valve rod 305 and the valve element 304 can.

As shown in fig. 10, in another embodiment, the device further includes a first return spring 105 and a second return spring 205, the second return spring 205 is sleeved on the sliding rod 202 (equivalent to the aforementioned return spring) or is disposed at one end of the sliding rod 202, one end of the second return spring 205 is fixed to the housing 101, the other end of the second return spring is in contact with the sliding rod 202, and is used for driving the sliding pawl 203 to be clamped into the constraint portion 207, and the first return spring 105 is sleeved on the pushing portion 210, and is used for providing an elastic force to the push rod 211 in a direction away from the limiting sleeve 206; the first return spring 105 and the second return spring 205 are respectively adopted to respectively drive the push rod 211 and the slide rod 202 to reset, which is beneficial to realizing high-efficiency and quick reset, so that the electromagnetic mechanism and the angle control mechanism 200 can continuously act.

In order to prevent the push rod 211 from rotating relative to the position limiting sleeve 206, in one scheme, a plurality of guide grooves 217 or guide keys 218 are arranged on the outer side of the push rod 211, the inner wall of the position limiting sleeve 206 is provided with the guide keys 218 matched with the guide grooves 217 or the guide grooves 217 matched with the guide keys 218, and the push rod 211 is restrained by the matching of the guide grooves 217 and the guide keys 218 to prevent the push rod 211 from rotating;

in another scheme, the pushing portion 210 further includes an extension rod 214 and a first guide portion 107 disposed on the housing 101, the extension rod 214 is a rod with a non-circular cross section, for example, the extension rod 214 may be a square rod, the first guide portion 107 is adapted to the extension rod 214, the extension rod 214 is disposed on the push rod 211 and connected to or integrated with the first guide portion 107 to form a moving pair, and the armature 104 is fixed to the extension rod 214, as shown in fig. 10, the first guide portion 107 is a guide cylinder or a guide groove 217, so as to restrict the pushing portion 210 from moving only along its own axial direction.

Since the slide bar 202 moves in the longitudinal direction while rotating during the operation of the angle control mechanism 200, similarly, in order to enable the slide bar 202 to move strictly in the longitudinal direction, as shown in fig. 10 and 11, the housing 101 is provided with a second guide portion 213, the second guide portion 213 is a guide tube or a guide groove 217, the cross section of the slide bar 202 is circular, the second guide portion 213 is adapted to the slide bar 202, and the slide bar 202 and the second guide portion 213 form a moving pair, and can move relative to the slide bar 202 and rotate relative to the slide bar 202.

In order to solve the problem, in the action process of the angle control mechanism 200, the sliding rod 202 rotates and moves axially, and the sliding rod 202 only needs to transmit the rotation to the valve rod 305, so as to drive the valve rod 305 to rotate, in one scheme, the sliding mechanism further comprises a sliding sleeve 215, the sliding portion 201 further comprises a limiting rod arranged at one end of the sliding rod 202, the sliding sleeve 215 is provided with a through hole 216 passing through the limiting rod, the limiting rod is arranged in the through hole 216 and forms a moving pair with the sliding sleeve 215, the cross section of the limiting rod is a non-circular surface, the through hole 216 is matched with the limiting rod, and the sliding sleeve 215 is connected with the valve rod 305 (including direct connection and indirect connection, which will not be described in detail later). Because the sliding rod 202 forms a sliding pair with the sliding sleeve 215 through the limiting rod, the sliding portion 201 can move relative to the sliding sleeve 215 during the action of the angle control mechanism 200, and because the cross section of the limiting rod is a non-circular surface, the sliding portion 201 can drive the sliding sleeve 215 to rotate together, thereby achieving the purpose of driving the valve rod 305 to rotate.

As shown in fig. 10 and 11, as a preferred embodiment, the sliding sleeve 215 further includes a through hole 216 passing through the sliding rod 202, a plurality of guide slots 217 or guide keys 218 are disposed in the through hole 216 and are disposed along a central axis direction of the sliding sleeve 215, a plurality of guide keys 218 adapted to the guide slots 217 or guide slots 217 adapted to the guide keys 218 are disposed on an outer side surface of one end of the sliding rod 202, and the sliding sleeve 215 is connected to the valve rod 305. Through the matching of the guide slot 217 and the guide key 218, not only the sliding sleeve 215 and the sliding portion 201 can form a sliding pair, so that the sliding rod 202 can move relative to the sliding sleeve 215, but also the sliding rod 202 can drive the sliding sleeve 215 to rotate together, thereby achieving the purpose of driving the valve stem 305 to rotate.

In principle, the pulse type electromagnetic valve is internally provided with a set of electromagnetic mechanism and angle control mechanism 200, and the closing function of the valve and the function of reducing the opening degree of the valve can be realized by driving the valve plug 304 to rotate for a circle, but the pulse type electromagnetic valve has the problem of low response speed and can only be applied to the occasions with small flow, namely the pulse type electromagnetic valve is applicable to the occasions with smaller diameters of the inlet 301 and the outlet 302, such as the low pressure and the pipe diameter less than 25 mm.

Since the pulse type electromagnetic valve is in the process of opening and closing in the practical use process, the pulse type electromagnetic valve is convenient to control the opening/closing and the opening degree and improve the response speed, as a preferred embodiment, as shown in fig. 12, the pulse type solenoid valve provided in this embodiment includes two sets of electromagnetic mechanisms and angle control mechanisms 200, and for convenience of description, the two electromagnetic mechanisms are respectively a first electromagnetic mechanism 108 and a second electromagnetic mechanism 109, the two angle control mechanisms 200 are respectively a first angle control mechanism 219 and a second angle control mechanism 220, wherein the first electromagnetic mechanism 108 is connected with the first angle control mechanism 219, and the first angle control mechanism 219 is connected with the first valve rod 306 fixed on the valve core 304, as shown in fig. 12, the first driving valve rod 306 is driven to rotate in the forward direction so as to increase the opening degree of the valve or open the valve under the action of the pulse signal; the second electromagnetic mechanism 109 is connected to the second angle control mechanism 220, the second angle control mechanism 220 is connected to the second valve rod 307 fixed to the valve core 304, as shown in fig. 12, and is configured to drive the second valve rod 307 to rotate in a reverse direction so as to reduce the opening degree of the valve or close the valve under the action of a pulse signal, and the first valve rod 306 and the second valve rod 307 are collinear, as shown in fig. 12, the two sets of electromagnetic mechanisms and the two angle control mechanisms 200 are respectively disposed at the upper and lower ends of the valve body 300 and are symmetrically mounted, and for convenience of mounting, the control terminals 106 of the two sets of electromagnetic mechanisms may also be respectively disposed at the upper housing 101 of the valve body 300.

Since the first electromagnetic mechanism 108 and the second electromagnetic mechanism 109 are respectively used for driving the valve element 304 to rotate forward and backward, so that the two sets of angle control mechanisms 200 in the pulse-type electromagnetic valve do not interfere with each other during the operation, in this embodiment, as shown in fig. 10 or 12, the sliding portion 201 further includes a one-way clutch 400, the sliding rod 202 includes a first section 221 and a second section 222, the sliding pawl 203 is disposed on the first section 221, the second section 222 is engaged with the sliding sleeve 215, the first section 221 is connected to the second section 222 through the one-way clutch 400, the first section 221 is used for driving the second section 222 to rotate in one direction through the one-way clutch 400, and when the second section 222 rotates in the direction opposite to the one direction, the one-way clutch 400 slips, so that the two sets of angle control mechanisms 200 do not interfere with each other during the operation, the opening/closing of the valve can be effectively realized.

As shown in fig. 10 or 12, the one-way clutch 400 is preferably a dog clutch such as a helical clutch.

Example 2

The main difference between this embodiment 2 and the above embodiment 1 is that in the pulse-type electromagnetic valve provided in this embodiment, a transmission mechanism is further disposed between the valve rod 305 and the angle control mechanism 200, one end of the transmission mechanism is connected to the valve rod 305, the sliding sleeve 215 is disposed at the other end of the transmission mechanism, and a transmission ratio of the transmission mechanism may be greater than 1 or equal to 1.

In principle, the more the number of the constraining portions 207 arranged along the circumferential direction of the position limiting sleeve 206 is, the smaller the angle of rotation of the valve element 304 is under the action of a single pulse electrical signal, the higher the precision is, but in practice, due to the machining precision and the size parameters of the position limiting sleeve 206, the number of the constraining portions 207 cannot be too large, for this reason, the transmission mechanism may preferentially adopt a speed reduction transmission mechanism to achieve the purposes of reducing the rotation speed and increasing the torque, that is, the transmission ratio of the transmission mechanism is greater than 1, for example, when the transmission mechanism with the transmission ratio of 2 is arranged, under the action of a single pulse electrical signal, when the slide rod 202 rotates 1 degree, the valve element 304 can only rotate 0.5 degree, so that the flow rate adjusting precision of the pulse type electromagnetic valve can be effectively improved.

Preferably, the reduction transmission mechanism may be one or a combination of a gear transmission mechanism and a worm gear-worm transmission mechanism. As an example, as shown in fig. 10 or fig. 12, in this embodiment, the reduction transmission mechanism is a gear transmission mechanism, the gear transmission mechanism includes a driving gear 501 and a driven gear 502, the driven gear 502 is fixed to the valve rod 305, the driving gear 501 is movably connected to the housing 101, the sliding sleeve 215 is movably connected to the housing 101 (e.g., fixed to the housing 101 through a bearing), the driving gear 501 is fixed to the sliding sleeve 215 and is coaxial with the sliding sleeve 215, the sliding sleeve 215 is matched with the sliding rod 202, the driving gear 501 is engaged with the driven gear 502, and the number of teeth of the driven gear 502 is greater than that of the driving gear 501, so as to achieve the purposes of reducing the rotation speed and increasing the torque.

In order to make the structure of the whole solenoid valve more compact for practical installation and use, as another example, the two sets of electromagnetic mechanisms and angle control mechanisms 200 can be disposed above the valve body 300 by reasonably disposing the speed reduction transmission mechanism, as shown in fig. 13, for example, by reasonably disposing the number and positions of the gears 503, the two sets of electromagnetic mechanisms and angle control mechanisms 200 can be disposed above the valve body 300.

Example 3

Since the operation (or attraction) of the electromagnet and the armature 104 in the conventional electromagnetic valve cannot be determined from the outside of the housing 101, in the electromagnetic valve provided in this embodiment, the pushing portion 210 (e.g., the extension rod 214) is further provided with a state detection contact 601, as shown in fig. 10, the state detection contact 601 and the fixed contact 602 may be preferentially disposed on the side surface of the extension rod 214, the housing 101 is provided with a fixed contact 602, the state detection contact 601 and the fixed contact 602 are respectively connected to two detection terminals 603 disposed on the housing 101, and the detection terminals 603 may be used for connecting a controller, such as a single chip microcomputer, a PLC, and the like; when the sliding rod 202 moves to a position farthest from the position of the position-limiting sleeve 206 under the pushing of the pushing rod 211, the state detection contact 601 is in contact with the fixed contact 602, at this time, the state detection loop is communicated, and the controller can receive a corresponding signal through the detection terminal 603, which indicates that the electromagnet and the armature 104 in the electromagnetic valve are already actuated, so that the problem that whether the internal electromagnet and the armature 104 are actuated (or pulled) cannot be judged from the outside of the housing 101 can be effectively solved.

Example 4

The main difference between the present embodiment and embodiment 2 is that the pulse type electromagnetic valve provided by the present embodiment only includes one set of electromagnetic mechanism and angle control mechanism 200, and the angle control mechanism 200 is connected to the valve rod 305 through a transmission mechanism, such as a gear reduction transmission mechanism; the reversing mechanism is arranged in the transmission mechanism so as to switch the rotation direction of the valve rod 305, for example, the transmission mechanism adopts a gear reduction transmission mechanism which comprises a plurality of gears meshed with each other, the reversing mechanism can be an inertia wheel reversing mechanism which comprises two inertia wheels meshed with each other, in one working state, one of the inertia wheels is meshed with the gear in the gear reduction transmission mechanism and forms a part of the gear reduction transmission mechanism, when the reversing is needed, the two inertia wheels are meshed into the gear reduction transmission mechanism and form a part of the gear reduction transmission mechanism, and the change of the transmission direction is inevitably caused due to the change of the number of the gears in the whole gear transmission system, so that the rotation direction of the valve rod 305 and the valve core 304 can be effectively changed, the forward rotation and the reverse rotation of the valve core 304 can be controlled by using one set of electromagnetic mechanism, the angle control mechanism 200 and one reversing mechanism, so that the control is very convenient; it is understood that the idler rotation direction changing mechanism is a common direction changing mechanism and is not described in detail herein.

In order to drive the reversing mechanism to act, the reversing mechanism can be driven to act by matching an electromagnet with an armature 104, so that the positions of two inertia wheels are effectively changed to switch the transmission direction, and a coil 103 in the electromagnet can be connected with a reversing connector arranged on the shell 101 through a wire, and the reversing connector is connected with a controller to control whether to reverse.

Example 5

In order to make the whole solenoid valve more compact, in the pulse type solenoid valve provided by the present embodiment, the center of the iron core 102 is provided with a central through hole, the armature 104 is arranged at one end of the iron core 102, one end of the extension rod 214 passes through the central through hole to be connected with the armature 104, as shown in fig. 14, the inner diameter of the central through hole is larger than the outer diameter of the extension rod 214, and the armature 104 may preferably adopt a ring structure so as to be matched with the iron core 102; with the structure, the iron core 102 and the extension rod 214 can form a moving pair, which not only can play a role in restraining the extension rod 214 and guiding the extension rod 214, but also is beneficial for the whole solenoid valve to have a more compact structure and a smaller volume; in addition, the problem that the pushing part is easy to block due to torque caused by bias of the electromagnet and the armature can be effectively solved.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention.

Claims

1. An electromagnetic valve is characterized by comprising a valve body, an electromagnetic mechanism and an angle control mechanism, wherein the valve body is provided with an inlet and an outlet, the inlet and the outlet are communicated through an internal flow passage arranged in the valve body, a valve core is arranged in the internal flow passage, the valve core is connected with the angle control mechanism through a valve rod, the electromagnetic mechanism is connected with the angle control mechanism, wherein,

the valve core is driven by the valve rod to rotate so as to adjust the opening of the valve body.

2. The electromagnetic valve according to claim 1, further comprising a housing fixed to said valve body, said electromagnetic mechanism and said angle control mechanism being respectively fixed within said housing.

3. The solenoid valve according to claim 2, wherein said angle control mechanism comprises a sliding portion, a position-limiting sleeve, a pushing portion, wherein,

the pushing part comprises a push rod with a cylindrical structure, one end of the push rod is obliquely provided with a plurality of second guide surfaces, the second guide surfaces are matched with the first guide surfaces, the second guide surfaces are distributed along the circumferential direction of the push rod respectively, the armature is fixed to the pushing part, and when the sliding claw is clamped in the constraint part, the first guide surfaces are only contacted with the parts of the second guide surfaces.

4. The electromagnetic valve according to claim 3, wherein the restriction portion comprises a slot provided at an end of the stop collar and a restriction surface provided between two adjacent slots, the restriction surface is disposed obliquely, and the inclination direction of the restriction surface is opposite to the inclination direction of the second guide surface.

5. The electromagnetic valve according to claim 3, further comprising a return spring, wherein the return spring is sleeved on the sliding rod or arranged at one end of the sliding rod, one end of the return spring is fixed on the housing, the other end of the return spring is in contact with the sliding rod, and the return spring is used for enabling the sliding claw to be clamped into the constraint part;

or, still include reset spring one and reset spring two, the reset spring two set up in the slide bar or set up in the one end of slide bar, the one end of reset spring two is fixed in the casing, the other end with the slide bar contacts for drive sliding jaw card is gone into the restricted portion, the reset spring one set is located promotion portion is used for providing the edge for the push rod and keeps away from the elasticity of stop collar direction.

6. The electromagnetic valve according to claim 3, wherein a plurality of guide grooves or guide keys are arranged on the outer side of the push rod, the inner wall of the limiting sleeve is provided with guide keys matched with the guide grooves or guide grooves matched with the guide keys, and the push rod is restrained by matching of the guide grooves and the guide keys to prevent the push rod from rotating;

or the pushing part also comprises an extension rod and a first guide part arranged on the shell, the extension rod is a rod with a non-circular section, the first guide part is matched with the extension rod, the extension rod is arranged on the push rod or is in an integral structure, and forms a moving pair with the first guide part, the armature is fixed on the extension rod, and the first guide part is a guide cylinder or a guide groove;

the shell is provided with a second guide part, the second guide part is a guide cylinder or a guide groove, the cross section of the sliding rod is circular, the second guide part is matched with the sliding rod, and the sliding rod and the second guide part form a sliding pair.

7. The electromagnetic valve according to claim 3, further comprising a sliding sleeve, wherein the sliding part further comprises a limiting rod arranged at one end of the sliding rod, the sliding sleeve is provided with a through hole passing through the limiting rod, the limiting rod is arranged in the through hole and forms a moving pair with the sliding sleeve, the cross section of the limiting rod is a non-circular surface, the through hole is matched with the limiting rod, and the sliding sleeve is connected with the valve rod;

or, still include the sliding sleeve, the sliding sleeve is provided with through-hole through the slide bar, just be provided with a plurality of guide ways or the guide key that sets up along sliding sleeve the central axis direction in the through-hole, the lateral surface of slide bar one end be provided with a plurality of with the guide key of guide way looks adaptation, or with the guide way of guide key looks adaptation, the sliding sleeve with the valve rod links to each other.

8. The electromagnetic valve according to claim 7, characterized by comprising two sets of electromagnetic mechanisms and an angle control mechanism, wherein the two electromagnetic mechanisms are respectively a first electromagnetic mechanism and a second electromagnetic mechanism, and the two sets of angle control mechanisms are respectively a first angle control mechanism and a second angle control mechanism, wherein the first electromagnetic mechanism is connected with the first angle control mechanism, and the first angle control mechanism is connected with a first valve rod fixed on a valve core and used for driving the first valve rod to rotate in a forward direction; the second electromagnetic mechanism is connected with the second angle control mechanism, the second angle control mechanism is connected with a second valve rod fixed on the valve core, and the first valve rod and the second valve rod are collinear.

9. The electromagnetic valve according to claim 8, wherein the sliding portion further comprises a one-way clutch, the sliding rod comprises a first section and a second section, the sliding pawl is disposed on the first section, the second section is matched with the sliding sleeve, the first section is connected with the second section through the one-way clutch, the first section is used for driving the second section to rotate in one direction through the one-way clutch, and when the second section rotates in the direction opposite to the one direction, the one-way clutch slips.

10. The solenoid valve as claimed in claim 9, wherein the one-way clutch is a dog clutch.