CN210034609U - Valve gate - Google Patents

Abstract

The application relates to the technical field of valves, especially, relate to a valve, include: the valve comprises a shell, a power unit and a valve core, wherein the power unit and the valve core are installed in the shell, the valve further comprises an active magnetic part connected to the power unit and a passive magnetic part connected to the valve core, the active magnetic part is provided with an active magnetic surface, the extension direction of the active magnetic surface is perpendicular to the axial direction of an output shaft of the power unit, the passive magnetic part is provided with a passive magnetic surface, and the active magnetic surface and the passive magnetic surface are oppositely arranged so as to transmit power generated by the power unit to the valve core through the magnetic action between the active magnetic part and the passive magnetic part. This application can be solved because two magnet axiality require when current valve assembly is higher, and the assembly precision requires highly, leads to the lower technical problem of assembly efficiency.

Description

Valve gate

Technical Field

The application relates to the technical field of valves, in particular to a valve.

Background

Electronic valve products generally include two parts, a flow control device and a power device, wherein the flow control device includes a valve core for controlling the flow direction and the flow rate of a fluid medium, so that the flow control device generally needs to be installed in a liquid medium environment, and the power device generally includes electrical elements such as a motor and a control panel and needs to be installed in a dry environment. At present, in order to realize power transmission of a power device to a flow control device and prevent leakage of a liquid medium caused when the power device is connected with the flow control device, a magnetic coupling is generally adopted to connect the power device and the flow control device so as to realize static sealing while realizing power transmission, and the problem of leakage of the liquid medium is well avoided. However, most of the currently used magnetic couplings are formed by sleeving two magnets together, that is, one cylindrical magnet is sleeved on one cylindrical magnet, the magnetic force action of the two magnets is generated between the arc-shaped outer wall of the cylindrical magnet and the arc-shaped inner wall of the cylindrical magnet, and the installation form has high requirement on the coaxiality between the two magnets, high requirement on the assembly precision and reduced assembly efficiency.

SUMMERY OF THE UTILITY MODEL

An object of this application is to provide a valve to solve because two magnet axiality when current valve assembly require highly, the assembly precision requires highly, leads to the lower technical problem of assembly efficiency.

In order to achieve the purpose, the following technical scheme is adopted in the application:

one aspect of the present application provides a valve comprising: the valve also comprises an active magnetic component connected to the power unit and a passive magnetic component connected to the valve core,

the driving magnetic part is provided with a driving magnetic surface, the extension direction of the driving magnetic surface is perpendicular to the axial direction of an output shaft of the power unit, the driven magnetic part is provided with a driven magnetic surface, and the driving magnetic surface and the driven magnetic surface are arranged oppositely so as to transmit the power generated by the power unit to the valve core under the action of the magnetic force between the driving magnetic part and the driven magnetic part.

Preferably, the active magnetic surface and the passive magnetic surface are both planes, and the active magnetic surface is parallel to the passive magnetic surface.

The technical scheme has the beneficial effects that: compared with the mode that the active magnetic force surface and the passive magnetic force surface are arc-shaped or other non-planar, the active magnetic force surface and the passive magnetic force surface are designed into two planes which are parallel to each other, so that the space required for forming the active magnetic force surface and the passive magnetic force surface can be reduced to the minimum, and the space occupied by the active magnetic force part and the passive magnetic force part is further reduced; and, the accessible makes active magnetic surface and passive magnetic surface as far as close in order to increase the magnetic force effect between active magnetic component and the passive magnetic component to reduce the space that the distance that leaves between active magnetic component and the passive magnetic component and the two occupies jointly, provide the mounted position for other parts in the valve, make each part can compacter reasonable arrange, and then reduce the volume of valve.

Preferably, the active magnetic member and the passive magnetic member are the same size.

The technical scheme has the beneficial effects that: like this initiative magnetic force spare and passive magnetic force spare can adopt the same mould to carry out the shaping when the preparation, and need not to provide the mould of different specifications for the magnetic force spare of two kinds of different specifications, and then reduced manufacturing cost, saved production processes.

Preferably, the driving magnetic member and the driven magnetic member are both circular members, and each circular member includes a plurality of sector-shaped magnetic blocks distributed on the circumference of the circular member and connected in sequence.

Preferably, the number of the fan-shaped magnetic blocks is greater than or equal to four.

Preferably, the active magnetic member and the passive magnetic member are both ring-shaped members.

The technical scheme has the beneficial effects that: therefore, when the driving magnetic part and the driven magnetic part are installed, the driving magnetic part and the driven magnetic part can be respectively sleeved on the corresponding installation shafts, the installation is convenient, and the assembly efficiency is improved; in addition, compared with the mode that the driving magnetic piece and the driven magnetic piece are designed into disc-shaped or other circular structures, the driving magnetic piece and the driven magnetic piece are designed into a ring shape, so that the material consumption of the driving magnetic piece and the driven magnetic piece can be reduced, and the production cost is further reduced.

Preferably, a first accommodating cavity and a second accommodating cavity are formed in the housing, the power unit and the active magnetic member are installed in the first accommodating cavity, the valve core and the passive magnetic member are installed in the second accommodating cavity, the housing includes a partition member that partitions the first accommodating cavity and the second accommodating cavity, and an extension direction of the partition member is perpendicular to an output shaft of the power unit.

The technical scheme has the beneficial effects that: the active magnetic surface and the passive magnetic surface are arranged oppositely, so that the active magnetic part and the passive magnetic part can be separated only by forming the partition into a structural form such as a thin plate or a sheet and the like, the volume and the occupied space of the partition are reduced, and the active magnetic part and the passive magnetic part can be close to the partition as much as possible, so that the distance between the active magnetic part and the passive magnetic part is reduced, and further, a large enough magnetic force action can be generated between the active magnetic part and the passive magnetic part.

Preferably, a first anti-wear boss for separating the partition from the active magnetic member is formed on the active magnetic member.

The technical scheme has the beneficial effects that: in order to enable the driving magnetic part and the driven magnetic part to generate a large enough magnetic force effect, the driving magnetic surface needs to be arranged close to the separating part as far as possible, in order to enable the driving magnetic part not to be easily worn due to contact with the separating part in the moving process, so that the service life of the driving magnetic part is prolonged, the driving magnetic part and the separating part are separated, and the first anti-abrasion boss is adopted to block when collision possibly occurs between the driving magnetic part and the separating part, so that the possible contact between the driving magnetic part and the separating part can be well avoided.

Preferably, a gear train assembly is included mounted within the housing, the gear train assembly including a primary drive member directly receiving power generated by the power unit, the passive magnetic member being mounted on the primary drive member.

The technical scheme has the beneficial effects that: because in each driving medium of gear train subassembly, make the required moment of torsion of first order driving medium motion minimum, consequently install passive magnetic part on first order driving medium, can make the magnetic force that produces between initiative magnetic part and the passive magnetic part be enough to realize that the power unit drives first order driving medium synchronous motion, and then guarantee initiative magnetic part and passive magnetic part and last synchronous motion.

Preferably, a mounting seat is arranged in the shell, the gear train assembly comprises an nth-stage transmission member, the nth-stage transmission member is mounted on the mounting seat to isolate the nth-stage transmission member from the shell, and N is a natural number.

The technical scheme has the beneficial effects that: through the nth transmission member of mount pad installation, just need not to trompil on the wall of casing for the installation nth transmission member, and then avoid making the wall of casing thin because of trompil on the wall of casing, or the problem that the medium was revealed appears in trompil department.

Preferably, the nth stage transmission member is a first stage transmission member, and a second anti-wear boss is formed on the passive magnetic member to separate the mounting seat from the passive magnetic member.

The technical scheme has the beneficial effects that: through the setting of second abrasionproof boss, can prevent that the condition of collision with the mount pad can appear in the motion process by passive magnetic part, and then reduced the possibility of passive magnetic part wearing and tearing, prolonged the life of passive magnetic part.

Preferably, the gear train assembly includes a final drive connected to the valve spool, the final drive being integrally formed with the valve spool as a valve spool unit.

The technical scheme has the beneficial effects that: the valve core unit can be manufactured as an integral structure when the valve core is manufactured, and the manufacturing process is also saved.

Preferably, a dust prevention portion is formed on the spool unit, a communication passage is formed in the housing, and the dust prevention portion is located in the communication passage.

The technical scheme has the beneficial effects that: through the setting to dustproof portion on the case unit, can reduce and even avoid the dust in the medium to get into the gear train subassembly from the intercommunication passageway, and then avoid the dust to cause harmful effects to the transmission effect and the life of gear train subassembly as far as possible.

Preferably, the final drive is a sector gear.

The technical scheme has the beneficial effects that: the last-stage transmission part is a sector gear, so that effective transmission of power can be guaranteed, the material consumption of the gear is reduced, the cost is saved, and the sector gear has a relatively small volume, so that the installation space is saved for other parts in the valve, the arrangement of all parts in the valve is more compact and reasonable, and the space occupied by the valve is further reduced.

The technical scheme provided by the application can achieve the following beneficial effects:

the application provides a valve, through the magnetic force effect between initiative magnetic surface and the passive magnetic surface realize the power transmission between power unit and the case, only need during the assembly initiative magnetic surface and passive magnetic surface face-to-face set up and produce be enough to realize power transmission's magnetic force can, because the axiality requirement between initiative magnetic part and the passive magnetic part is lower, consequently can improve assembly efficiency.

Additional features of the present application and advantages thereof will be set forth in the description which follows, or may be learned by practice of the present application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It should be apparent that the drawings in the following description are embodiments of the present application and that other drawings may be derived from those drawings by a person of ordinary skill in the art without inventive step.

FIG. 1 is a schematic diagram of an internal structure from a perspective of one embodiment of a valve according to the present disclosure;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a schematic perspective view of an embodiment of a passive magnetic member according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of an internal structure from another perspective of an embodiment of a valve according to an embodiment of the present disclosure;

fig. 5 is a schematic perspective view of an embodiment of a valve core unit according to an embodiment of the present disclosure.

In the figure:

100-a housing;

200-a power unit;

210-an output shaft;

300-a first receiving cavity;

400-active magnetic member;

410-a first anti-wear boss;

500-a passive magnetic element;

510-a second anti-wear boss;

520-sector magnetic block;

530-passive magnetic surface;

600-a second receiving cavity;

700-a separator;

710-a mount;

800-a gear train assembly;

810-first stage drive;

811-supporting the shaft;

812-a worm;

900-a cartridge unit;

910-final drive member;

920-a dust-proof part;

921-dustproof slot;

930-valve core.

Detailed Description

The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be noted that the terms "horizontal", "vertical", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "nth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

As shown in fig. 1-5, one aspect of the present application provides a valve comprising: a housing 100, a power unit 200 and a valve core 930 installed in the housing 100, the valve further comprising an active magnetic member 400 connected to the power unit 200 and a passive magnetic member 500 connected to the valve core 930,

the active magnetic member 400 has an active magnetic surface extending in a direction perpendicular to an axial direction of the output shaft 210 of the power unit 200, and the passive magnetic member 500 has a passive magnetic surface 530 disposed opposite to the active magnetic surface 530, so that power generated by the power unit 200 is transmitted to the valve element 930 by a magnetic force between the active magnetic member 400 and the passive magnetic member 500.

The active magnetic member 400 and the passive magnetic member 500 provided in the embodiment of the present application are preferably made of ru iron boron; the power unit 200 is preferably a power device capable of generating rotational power, such as a motor, and the power unit 200 drives the active magnetic member 400 to rotate, and drives the passive magnetic member 500 to rotate through the magnetic force between the active magnetic member 400 and the passive magnetic member 500, so as to drive the valve core 930 to rotate; certainly, the valve provided in the embodiment of the present application is also suitable for a power unit 200 that is a power device generating a linear driving force or other driving forces, the power unit 200 may drive the driving magnetic member 400 to make a linear motion by generating the linear driving force, the driving magnetic member 400 drives the driven magnetic member 500 to make a linear motion by magnetic force with the driven magnetic member 500, and further drives the valve core 930 to make a linear motion, so that when the valve core 930 and the driven magnetic member 500 are installed in a closed medium environment, the closed medium environment may not be damaged, and power transmission may be achieved by magnetic force between the driving magnetic member 400 and the driven magnetic member 500, and further the problem of medium leakage that may be caused by power transmission between the power unit 200 and the valve core 930 is avoided; the active magnetic member 400 and the passive magnetic member 500 are preferably coaxially disposed; the vertical in the embodiment of the present application includes absolute vertical and approximate vertical.

The valve that this application provided, through the magnetic force effect between initiative magnetic surface and the passive magnetic surface 530 realize the power transmission between power unit 200 and the case 930, only need during the assembly initiative magnetic surface and passive magnetic surface 530 face-to-face setting and produce be enough to realize power transmission's magnetic force can, because the axiality requirement between initiative magnetic part 400 and the passive magnetic part 500 is lower, consequently can improve assembly efficiency.

In one embodiment of the present application, the active magnetic surface and the passive magnetic surface 530 are both planar, and the active magnetic surface is parallel to the passive magnetic surface 530. The smaller the distance between the active and passive magnetic surfaces 530, the better, in the embodiment of the present application, the distance between the active and passive magnetic surfaces 530 may be selected to be 2 to 4 mm, and preferably 3 mm. As opposed to making the active and passive magnetic surfaces 530 arc-shaped or other non-planar forms, designing the active and passive magnetic surfaces 530 as two planes parallel to each other minimizes the space required to form the active and passive magnetic surfaces 530, thereby reducing the space occupied by the active and passive magnetic members 400 and 500, respectively; in addition, the magnetic force action between the active magnetic force piece 400 and the passive magnetic force piece 500 can be increased by making the active magnetic force surface and the passive magnetic force surface 530 approach to each other as much as possible, the space occupied by the active magnetic force piece 400, the passive magnetic force piece 500 and the distance between the active magnetic force piece 400 and the passive magnetic force piece 500 is reduced, and the installation position is provided for other components in the valve, so that the components can be arranged more compactly and reasonably, and the volume of the valve is further reduced; of course, the active and passive magnetic surfaces 530 may also be curved, uneven, or other non-planar forms as long as the extension direction of the active magnetic surface is perpendicular to the output shaft of the power unit 200.

In one embodiment of the present application, the active magnetic member 400 and the passive magnetic member 500 are the same size. Thus, the active magnetic member 400 and the passive magnetic member 500 can be molded by using the same mold during manufacturing, and the molds with different specifications do not need to be provided for the two magnetic members with different specifications, so that the production cost is reduced, and the production process is saved; the drawings in the specification are schematic perspective views of the passive magnetic member 500 shown in fig. 3, and when the active magnetic member 400 and the passive magnetic member 500 are the same in size, fig. 3 is also a schematic perspective view of the active magnetic member 400, and the passive magnetic surface 530 shown in the drawings can be an active magnetic surface correspondingly.

In one embodiment of the present application, the active magnetic member 400 and the passive magnetic member 500 are each a circular member including a plurality of magnetic sectors 520 distributed and sequentially connected in a circumferential direction of the circular member.

In one embodiment of the present application, the number of the sector-shaped magnetic blocks 520 is greater than or equal to four.

In one embodiment of the present application, the active magnetic member 400 and the passive magnetic member 500 are both ring-shaped members. Therefore, when the active magnetic member 400 and the passive magnetic member 500 are installed, the active magnetic member 400 and the passive magnetic member 500 can be respectively sleeved on corresponding installation shafts, the installation is convenient, and the assembly efficiency is improved; in addition, compared with the design of the active magnetic member 400 and the passive magnetic member 500 as a disc or other circular structures, the design of the two members in a ring shape can reduce the material consumption of the active magnetic member 400 and the passive magnetic member 500, and further reduce the production cost.

Since the magnetic couplings currently used generally require two magnets within and outside of the media environment, in order to avoid medium leakage, a separator is used to separate two magnets in different environments, the two magnets of the magnetic coupling are generally in a sleeved mode, so that the partition is required to adopt a corresponding structural mode to adapt to the assembly mode of the two magnets, for example, when one magnet is a cylindrical magnet and the other magnet is a cylindrical magnet, it is necessary to form the spacer in a barrel shape, fit the spacer outside the cylindrical magnet, fit the cylindrical magnet outside the spacer, and then realize keeping apart two magnets, this nevertheless makes the separator volume great, has occupied great valve inner space, makes other parts difficult rational arrangement in the valve, and then may lead to the whole volume of valve and the increase of shared space. To this end, as shown in fig. 1 and 2, in one embodiment of the present application, a first receiving chamber 300 and a second receiving chamber 600 are formed in a housing 100, a power unit 200 and an active magnetic member 400 are installed in the first receiving chamber 300, a valve core 930 and a passive magnetic member 500 are installed in the second receiving chamber 600, the housing 100 includes a partition 700 partitioning the first receiving chamber 300 and the second receiving chamber 600, and an extension direction of the partition 700 is perpendicular to an output shaft of the power unit 200. When the active and passive magnetic surfaces 530 are both planar, the extension direction of the partition 700 is preferably parallel to the active and/or passive magnetic surfaces 530; the above-mentioned parallelism includes the case of absolute parallelism and approximate parallelism; the partition 700 may preferably be a plate structure or a sheet structure, and the partition 700 may be a hard structure or an elastic structure or a flexible structure; the first receiving chamber 300 provided in the embodiment of the present application is formed in the housing 100, and the second receiving chamber 600 may be a chamber located in a smaller housing in the housing 100, and the partition 700 is a part of a wall of the smaller housing; the second receiving chamber 600 may also be a chamber of another housing located outside the housing 100 and connected to the housing 100, and the partition 700 is a portion for achieving connection of the housing 100 to the other housing.

Since the active magnetic surface is opposite to the passive magnetic surface 530, the active magnetic member 400 and the passive magnetic member 500 can be separated only by forming the partition member 700 into a thin plate or a sheet, so as to reduce the volume and the occupied space of the partition member 700, and the active magnetic member 400 and the passive magnetic member 500 can be as close to the partition member 700 as possible, so as to reduce the distance between the active magnetic member 400 and the passive magnetic member 500, thereby generating a sufficiently large magnetic force between the active magnetic member 400 and the passive magnetic member 500.

As shown in fig. 2, in one embodiment of the present application, a first anti-wear boss 410 for separating the partition 700 from the active magnetic member 400 is formed on the active magnetic member 400. In the present embodiment, the first wear boss 410 is preferably formed on the active magnetic surface; in order to generate a sufficient magnetic force between the active magnetic member 400 and the passive magnetic member 500, the active magnetic surface needs to be disposed as close to the spacer 700 as possible, so that the active magnetic member 400 is not easily worn by contacting the spacer 700 during the movement process, the service life of the active magnetic member 400 is prolonged, the active magnetic member 400 is separated from the spacer 700, and the first anti-abrasion boss 410 is adopted to block the collision between the active magnetic member 400 and the spacer 700, so that the contact between the active magnetic member 400 and the spacer 700 can be better avoided.

In one embodiment of the present application, as shown in fig. 1, 2 and 4, the valve provided by the embodiment of the present application includes a gear train assembly 800 installed in the housing 100, the gear train assembly 800 includes a first stage transmission 810 directly receiving power generated by the power unit 200, and the passive magnetic member 500 is installed on the first stage transmission 810. The gear train assembly 800 employed in the embodiments of the present application may include gears, worm gears, worms, and other transmission members for power transmission; the gear train assembly 800 adopted in the embodiment of the present application is preferably a reduction gear train, and the torque finally applied to the valve core 930 by the power unit 200 is increased by the gear train assembly 800, and because the torque required by the movement of the first-stage transmission element 810 is the minimum in each transmission element of the gear train assembly 800, the passive magnetic element 500 is installed on the first-stage transmission element 810, so that the magnetic force generated between the driving magnetic element 400 and the passive magnetic element 500 can be sufficient to enable the power unit 200 to drive the first-stage transmission element 810 to move synchronously, thereby ensuring that the driving magnetic element 400 and the passive magnetic element 500 move continuously and synchronously. Of course, the passive magnetic element 500 can be mounted on other transmission elements in the gear train assembly 800 as long as the synchronous movement between the active magnetic element 400 and the passive magnetic element 500 can be ensured.

As shown in fig. 2, in one embodiment of the present application, the gear train assembly 800 includes an nth stage transmission mounted on the mount 710 to isolate the nth stage transmission from the housing 100, N being a natural number. By installing the nth transmission member through the installation seat 710, a hole is not required to be formed in the wall of the casing 100 for installing the nth transmission member, so that the problem that the wall of the casing 100 is thinned due to the hole formed in the wall of the casing 100 or a medium leaks at the hole is avoided.

In one embodiment of the present application, the nth stage transmission element is a first stage transmission element 810, and a second anti-wear boss 510 is formed on the passive magnetic element 500 to separate the mounting seat 710 from the passive magnetic element 500. Through the arrangement of the second anti-abrasion boss 510, the situation that the passive magnetic member 500 collides with the mounting seat 710 in the movement process can be prevented, so that the possibility of abrasion of the passive magnetic member 500 is reduced, and the service life of the passive magnetic member 500 is prolonged; the second anti-wear boss 510 is preferably formed on the passive magnetic face 530; when the sizes of the active magnetic member 400 and the passive magnetic member 500 are the same, fig. 3 of the specification is also a schematic perspective view of the active magnetic member 400, and accordingly, the second anti-wear boss 510 shown in fig. 3 represents the first anti-wear boss 410; in the embodiment of the present application, it is preferable that the first-stage transmission member 810 includes a worm 812 and a support shaft 811, the worm 812 is sleeved on the support shaft 811, one end of the support shaft 811 penetrates through the passive magnetic member 500 and is mounted on the mounting seat 710, and the worm 812 is fixedly connected with the passive magnetic member 500.

As shown in fig. 5, in one embodiment of the present application, gear train assembly 800 includes final drive member 910 connected to a spool 930, final drive member 910 being integrally formed with spool 930 as a spool unit 900. In the existing valve without adopting a magnetic coupling, the valve core 930 and the gear train assembly 800 are respectively installed in two chambers, a connecting channel for connecting the valve core 930 and the gear train assembly 800 is generally formed between the two chambers, the valve core 930 and the gear train assembly 800 respectively extend into the connecting channel from two sides of the connecting channel to realize the connection between the valve core 930 and the gear train assembly 800, before the valve core 930 is connected with the gear train assembly 800, a sealing member needs to be placed between the valve core 930 and the gear train assembly 800, and after the valve core 930 is connected with the gear train assembly 800, the sealing member is fixed and seals the connecting channel to prevent a medium from flowing between the two chambers. By adopting the valve provided by the embodiment of the application, because the power unit 200 and the valve core 930 are respectively positioned in two mutually independent sealed chambers, the medium does not affect the power unit 200, so that the gear train assembly 800 and the valve core 930 are positioned in the same chamber, the connecting channel does not need to be sealed, thus the traditional connecting mode is not needed to be adopted between the valve core 930 and the gear train assembly 800 for installing a sealing piece, and the final-stage transmission member 910 and the valve core 930 of the gear train assembly 800 can be directly installed in the shell 100 after being integrally formed into the valve core unit 900, thereby not only saving the assembly process of the valve, but also saving the manufacturing process by simultaneously manufacturing the valve core unit 900 as an integral structure when manufacturing the valve core 930.

In one embodiment of the present application, the dust-proof portion 920 is formed in the valve body unit 900, the communication passage is formed in the housing 100, and the dust-proof portion 920 is located in the communication passage. The dust-proof portion 920 provided in the embodiment of the present application is preferably an annular structure formed on the valve element 930 and protruding in a radial direction of the valve element 930, the annular structure is disposed coaxially with the valve element 930, the dust-proof groove 921 may be preferably formed on an outer edge of the annular structure, and of course, the dust-proof groove 921 may not be provided, and the annular structure itself may be shielded from dust; through the arrangement of the dustproof part 920 on the valve core unit 900, dust in a medium can be reduced or even avoided from entering the gear train assembly 800 from the communication channel, and further, adverse effects of the dust on the transmission effect and the service life of the gear train assembly 800 are avoided as much as possible; when the dust-proof slot 921 is formed on the dust-proof portion 920, dust entering between the dust-proof portion 920 and the inner wall of the connection passage can be accommodated through the dust-proof slot 921, which is equivalent to adding a dust-proof barrier on the dust-proof portion 920, and dust can be more effectively prevented from entering the gear train assembly 800 from a medium.

In one embodiment of the present application, final drive member 910 is a sector gear. In the use of the valve core 930, the valve core 930 may be rotated within a certain angle range to open and close the valve, accordingly, the final transmission member 910 only needs to realize the function of transmitting power within the angle range, so that the final transmission member 910 is a sector gear, which not only ensures the effective transmission of power, but also reduces the material consumption of the gear, saves the cost, and, because the sector gear has a relatively small volume, saves the installation space for other components in the valve, makes the arrangement of each component in the valve more compact and reasonable, and further reduces the space occupied by the valve.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Furthermore, those skilled in the art will appreciate that while some of the embodiments described above include some features included in other embodiments, rather than others, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments. For example, in the claims above, any of the claimed embodiments may be used in any combination. Additionally, the information disclosed in this background section is only for enhancement of understanding of the general background of the application and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Claims (14)

1. A valve, comprising: the valve also comprises an active magnetic component connected to the power unit and a passive magnetic component connected to the valve core,

the driving magnetic part is provided with a driving magnetic surface, the extension direction of the driving magnetic surface is perpendicular to the axial direction of an output shaft of the power unit, the driven magnetic part is provided with a driven magnetic surface, and the driving magnetic surface and the driven magnetic surface are arranged oppositely so as to transmit the power generated by the power unit to the valve core through the magnetic action between the driving magnetic part and the driven magnetic part.

2. The valve of claim 1, wherein the active magnetic surface and the passive magnetic surface are both planar and the active magnetic surface is parallel to the passive magnetic surface.

3. The valve of claim 1, wherein the active magnetic member and the passive magnetic member are the same size.

4. The valve of claim 1, wherein the active magnetic member and the passive magnetic member are circular members, and the circular members comprise a plurality of magnetic segments distributed on the circumference of the circular members and connected in sequence.

5. The valve according to claim 4, wherein the number of the sector-shaped magnetic blocks is greater than or equal to four.

6. The valve of claim 1, wherein the active magnetic member and the passive magnetic member are both annular members.

7. The valve of claim 1, wherein a first receiving chamber and a second receiving chamber are formed in the housing, the power unit and the active magnetic member are installed in the first receiving chamber, the valve core and the passive magnetic member are installed in the second receiving chamber, and the housing includes a partition member partitioning the first receiving chamber and the second receiving chamber, and an extension direction of the partition member is perpendicular to an output shaft of the power unit.

8. The valve of claim 7, wherein a first wear boss is formed on said active magnetic member for separating said separator from said active magnetic member.

9. A valve according to any one of claims 1 to 8, including a gear train assembly mounted within the housing, the gear train assembly including a primary drive member directly receiving power generated by the power unit, the passive magnetic member being mounted on the primary drive member.

10. A valve as claimed in claim 9, wherein a mounting seat is provided in the housing, the gear train assembly comprising an nth stage drive mounted on the mounting seat to isolate the nth stage drive from the housing, N being a natural number.

11. The valve of claim 10, wherein the nth stage transmission member is a first stage transmission member, and a second anti-wear projection is formed on the passive magnetic member to separate the mounting seat from the passive magnetic member.

12. The valve of claim 9, wherein the gear train assembly includes a final drive coupled to the valve spool, the final drive being integrally formed with the valve spool as a valve spool unit.

13. The valve according to claim 12, wherein a dust prevention portion is formed on the spool unit, a communication passage is formed in the housing, and the dust prevention portion is located in the communication passage.

14. The valve of claim 12, wherein the final drive member is a sector gear.

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