CN220015874U - Electric control clutch and electric control clutch type water pump - Google Patents

Abstract

The utility model relates to an electric control clutch, which comprises a shell, a magnetic conduction ring, a first bearing, a second bearing, a main shaft, a coil assembly and a valve assembly, wherein the main shaft, the first bearing, the magnetic conduction ring and the shell are sequentially connected to form a sealed cavity; normally, clutch medium is filled in the first chamber, when the clutch medium clutch device works, the valve assembly is opened through the coil, the clutch medium flows to the second chamber through the valve assembly under the action of centrifugal force, and the spindle and the shell are in transmission connection through the clutch medium. The utility model also discloses an electric control clutch type water pump using the electric control clutch. The beneficial effects are as follows: the stability of magnetic conduction is ensured, and the response speed of the valve assembly is improved, so that the efficiency of the electric control clutch is improved.

Description

Electric control clutch and electric control clutch type water pump

Technical Field

The utility model relates to the field of transmission, in particular to the field of electric control clutch transmission, and specifically relates to an electric control clutch and an electric control clutch type water pump.

Background

The water pump is a machine capable of conveying or pressurizing liquid, and is widely applied to daily life of people, for example, a cooling system of a vehicle engine is characterized in that the water pump is used for extracting cooling liquid from a liquid storage tank, and driving the cooling liquid to flow through the engine and a radiator and then return to the liquid storage tank.

At present, the cooling system applied to the vehicle engine adopts a traditional direct-connected water pump, and as the direct-connected water pump is directly connected with the output end of the engine, the rotation speed of an impeller in the direct-connected water pump also changes along with the change of the rotation speed of the engine, namely, the flow of cooling liquid driven by the water pump also changes along with the change of the rotation speed of the engine; however, the engine speed changes rapidly, so that the amount of cooling liquid flowing through the engine is large and small, the engine is suddenly cooled and heated, carbon is easily deposited in the engine, the rotating speed of the water pump impeller is not reduced in winter, and engine heating is slow.

Therefore, currently, an electric control clutch type water pump is mostly adopted, a shell of an electric control clutch in the electric control clutch type water pump is driven to rotate through an output end of an engine, a magnetic field is generated after a coil assembly is electrified through a control system, and therefore a valve assembly is opened, clutch media stored in a first cavity conveniently flow into a second cavity, and transmission connection between the shell and a main shaft is achieved through the clutch media.

Because the electric control clutch and the electric control clutch type water pump are arranged in the engine bin, the components are numerous and are mostly metal components, and in order to prevent magnetic interference of a magnetic field generated by the coil component of the electric control clutch to peripheral components, the shell of the electric control clutch is made of magnetic insulating materials, and at the moment, how to control the valve component through the magnetic field by the coil component of the electric control clutch becomes a new problem.

Currently, in order to realize that the coil assembly can control the valve assembly, a layer of magnetic conduction layer is arranged between the shell and the bearing in the existing electric control clutch, however, a single magnetic conduction layer only forms a single magnetic channel, and the magnetic conduction layer rotates at a high speed along with the shell to cut magnetic lines of force, so that the stability of magnetic conduction of the existing electric control clutch adopting the single magnetic conduction layer is still poor, and the response time of the valve assembly is long.

Disclosure of Invention

The utility model aims at providing an electric control clutch to solve the problems of poor magnetic conduction stability and long response time of a valve assembly caused by poor magnetic conduction stability in the current electric control clutch. A second object of the present utility model is to provide an electronically controlled clutch-type water pump.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

as a first aspect of the present utility model, an electrically controlled clutch includes a housing, a magnetic ring, a first bearing, a second bearing, a spindle, a coil assembly, a valve assembly, wherein,

an opening chamber is arranged in the shell, the opening chamber comprises an opening arranged at one end of the shell, and a transmission part used for being in transmission connection with an external power source is arranged on the circumferential surface of the shell;

the magnetic conduction ring comprises more than two magnetic conduction layers, the plurality of magnetic conduction layers are coaxially sleeved, a magnetic insulation layer is arranged between the adjacent magnetic conduction layers, and the magnetic conduction ring is embedded in the opening;

the first bearing and the magnetic conduction ring are coaxially arranged and embedded in the magnetic conduction ring;

the second bearing and the first bearing are sleeved on the main shaft, and one end of the main shaft extends from the outside of the shell towards the inside of the opening cavity;

the coil assembly is connected with the second bearing;

the main shaft, the first bearing, the magnetic ring and the shell are sequentially connected to form a sealed cavity, and the valve assembly is arranged in the sealed cavity and divides the sealed cavity into a first cavity and a second cavity;

normally, clutch medium is filled in the first chamber, when the clutch medium clutch device works, a magnetic field is generated through the coil assembly, magnetic attraction is applied to the valve assembly through the magnetic conduction layer so that the valve assembly is opened, the first chamber is communicated with the second chamber, the clutch medium flows to the second chamber through the valve assembly under the action of centrifugal force, and the main shaft and the shell are in transmission connection through the clutch medium;

the magnetic conducting ring formed by the plurality of magnetic conducting layers is arranged, namely, the multipath magnetic channels are arranged, so that the stability of magnetic conduction is ensured, the reliability of the coil assembly for controlling the valve assembly is improved, and the response speed of the valve assembly is improved.

Preferably, the shell comprises an upper cover and a lower shell, the lower shell is annular, one ends of the upper cover and the lower shell are connected to form the opening chamber, the magnetic ring is arranged on the circumferential inner surface of the lower shell, and the magnetic ring and the lower shell are connected into a whole through welding.

Further, the transmission part is arranged on the circumferential outer surface of the lower shell.

Preferably, the valve assembly comprises a fixed part and a movable part, the coil assembly applies magnetic attraction to the movable part through the magnetic conducting ring, and,

the fixing piece is provided with at least one first through hole for the clutch medium to flow from the first chamber to the second chamber, and

at least one second through hole for the flow of the clutch medium from the second chamber to the first chamber;

the movable part is provided with first gate valves with the same number as the first through holes, the first gate valves are in one-to-one correspondence with the first through holes and are used for opening/closing the first through holes, and

second gate valves in the same number as the second through holes, the second gate valves being in one-to-one correspondence with the second through holes for opening/closing the second through holes;

and the first gate valve is located at the second chamber side of the fixture, and the second gate valve is located at the first chamber side of the fixture.

Further, the movable piece is also provided with a flow injection groove communicated with the first through hole and a flow return groove communicated with the second through hole.

Preferably, a transmission plate is arranged at the extending tail end of the main shaft, and when the second cavity is filled with clutch medium, the main shaft is in transmission connection with the shell through the transmission plate.

Furthermore, the electric control clutch provided by the utility model further comprises a connecting flange, and the transmission plate is connected with the main shaft through the connecting flange.

Preferably, the electronically controlled clutch further comprises a speed sensor, wherein the speed sensor comprises a trigger sleeved on the main shaft and a speed detector connected to the second bearing.

Preferably, the clutch medium is silicone oil.

As a second aspect of the present utility model, an electrically controlled clutch type water pump includes a pump body and an electrically controlled clutch as described above, the pump body includes a pump housing and a vane provided in the pump housing, the other end of the main shaft extends toward the pump body, penetrates the pump housing and is in driving connection with the vane, and the pump housing is connected with the second bearing.

The utility model relates to an electric control clutch and an electric control clutch type water pump, which have the beneficial effects that: the stability of magnetic conduction is ensured, and the response speed of the valve assembly is improved, so that the efficiency of the electric control clutch is improved; the concrete steps are as follows:

by arranging the magnetic conducting ring formed by the plurality of magnetic conducting layers, when the clutch works, the magnetic field generated by the coil assembly can simultaneously generate acting force on the valve assembly through the magnetic conducting ring, namely, the stability of magnetic conduction is higher; further, when the valve component needs to be controlled to be opened or closed, the magnetic conduction stability is higher, and the magnetic conduction can be carried out in multiple ways, so that the acting force of the coil component on the valve component can be faster, the acting surface is larger, the acting force is more uniform, and the response speed of the valve component is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following brief description of the drawings of the embodiments will make it apparent that the drawings in the following description relate only to some embodiments of the present utility model and are not limiting of the present utility model.

FIG. 1 is a schematic view of an embodiment of an electrically controlled clutch-type water pump according to the present utility model;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a cross-sectional view of the lower shell of FIG. 2;

FIG. 4 is a partial cross-sectional view of FIG. 1;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

FIG. 6 is a schematic diagram of the movable element in the valve assembly of FIG. 2;

fig. 7 is a schematic view of a fixture in the valve assembly of fig. 2.

Wherein: 1. a housing; 11. an upper cover; 12. a lower case; 121. a transmission part; 122. an opening; 13. a seal; 2. a magnetic conductive ring; 21. a magnetically conductive layer; 22. a magnetic insulating layer; 31. a first bearing; 32. a second bearing; 33. a main shaft; 34. a drive plate; 35. a connecting flange; 4. a coil assembly; 41. a coil main body; 42. a coil joint; 5. a valve assembly; 51. a movable member; 511. a first gate valve; 512. a second gate valve; 513. a flow injection groove; 514. a reflux groove; 515. a third through hole; 516. a guide structure; 517. positioning the notch; 52. a fixing member; 521. a first through hole; 522. a second through hole; 53. a positioning pin; 6. a speed sensor; 61. a trigger; 62. a speed detector; 621. a probe; 622. a sensor joint; 7. a pump body; 71. a pump housing; 72. a blade; 73. sealing the connection member; 74. a seal ring; 81. a first chamber; 82. a second chamber; 9. positioning the connecting piece.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

As a first aspect of the present embodiment, as shown in fig. 1 to 7, an electrically controlled clutch includes a housing 1, an opening 122 chamber is provided in the housing 1, the opening 122 chamber includes an opening 122 provided at one end of the housing 1, and a transmission portion 121 for transmission connection with an external power source is provided on a circumferential surface of the housing 1; the magnetic conduction ring 2 comprises more than two magnetic conduction layers 21, the magnetic conduction layers 21 are coaxially sleeved, a magnetic insulation layer 22 is arranged between the adjacent magnetic conduction layers 21, and the magnetic conduction ring 2 is embedded in the opening 122; the magnetic ring device further comprises a first bearing 31, a second bearing 32 and a main shaft 33, wherein the first bearing 31 and the magnetic ring 2 are coaxially arranged and embedded in the magnetic ring 2; the second bearing 32 and the first bearing 31 are both sleeved on the main shaft 33, and one end of the main shaft 33 extends from the outside of the shell 1 towards the inside of the cavity of the opening 122; at the same time, a coil assembly 4 for generating a magnetic field is also provided, and the coil assembly 4 is connected with the second bearing 32; the spindle 33, the first bearing 31, the magnetic ring 2 and the housing 1 are sequentially connected to form a sealed chamber, a valve assembly 5 dividing the sealed chamber into a first chamber 81 and a second chamber 82 is arranged in the sealed chamber, and the valve assembly 5 is arranged in the sealed chamber; normally, the first chamber 81 is filled with a clutch medium; when the clutch medium is powered on, the coil assembly 4 generates a magnetic field, the magnetic field applies magnetic attraction to the valve assembly 5 via the magnetically conductive layer 21 to open the valve assembly 5, at this time, the first chamber 81 and the second chamber 82 are communicated, the clutch medium flows to the second chamber 82 via the valve assembly 5 under the action of centrifugal force, and the spindle 33 and the housing 1 form a transmission connection through the clutch medium.

In this embodiment, the magnetic conducting ring 2 formed by the multiple magnetic conducting layers 21, that is, multiple magnetic channels are provided, so that stability of magnetic conduction is ensured, that is, reliability of the coil assembly 4 for controlling the valve assembly 5 is improved, and thus response speed of the valve assembly 5 is improved.

It should be further noted that, in this embodiment, the transmission portion 121 is in transmission connection with an external power source, and when in operation, the external power source drives the housing 1 to rotate, so as to drive the clutch medium located in the first chamber 81 to rotate, that is, apply centrifugal force to the clutch medium; wherein the external power source may be directly the output of the engine.

Meanwhile, in this embodiment, in order to facilitate the electrical connection between the coil assembly 4 and the external component, the coil assembly 4 includes a coil body 41 and a coil connector 42, wherein the coil body 41 is connected to the second bearing 32, and the coil body 41 is electrically connected to the external component through the coil connector 42.

Further, in this embodiment, in order to facilitate the positioning of the valve assembly 5 in the sealed chamber, as shown in fig. 1 and 2, the housing 1 includes an upper cover 11 and a lower shell 12 that are connected to each other in a sealing manner, and a sealing member 13 is further provided to ensure that the upper cover 11 and the lower shell 12 form a sealing connection; the lower shell 12 is annular, one ends of the upper cover 11 and the lower shell 12 are connected to form the opening 122 chamber, the magnetic ring 2 is disposed on the circumferential inner surface of the lower shell 12, and the magnetic ring 2 and the lower shell 12 are integrally connected by welding.

It should be noted that, in the present embodiment, the case 1 is described as the upper cover 11 and the lower case 12, which is only advantageous to the valve assembly 5, the transmission plate 34, etc. located in the sealed chamber after the case 1 is split into the upper cover 11 and the lower case 12; however, this is not necessary, and in practice, the housing 1 may be integrally formed or split into more parts that are sealingly connected to one another.

Further, in the present embodiment, as shown in fig. 1 to 5, the transmission portion 121 is provided on the circumferential outer surface of the lower case 12.

It should be noted that, in this embodiment, the transmission part 121 refers to a portion for connecting with external power through a transmission member, and when the transmission members are different, the structure of the transmission part 121 is correspondingly different, for example, when the transmission member is a transmission belt, the transmission part 121 needs to be adapted to the transmission belt; for example, when the transmission member is a chain, the transmission portion 121 needs to be matched with the chain, which is beneficial to the convenience, and when the transmission member is a gear, the transmission portion 121 is correspondingly a gear meshed with the transmission member by forming teeth; typically, the transmission 121 is directly in driving connection with the output of the engine.

Further, as shown in fig. 2 and fig. 4 to fig. 7, the valve assembly 5 includes a fixed member 52 and a movable member 51, the coil assembly 4 applies magnetic attraction to the movable member 51 through the magnetic ring 2, and at least one first through hole 521 for flowing the clutch medium from the first chamber 81 to the second chamber 82 and at least one second through hole 522 for flowing the clutch medium from the second chamber 82 to the first chamber 81 are provided in the fixed member 52; the movable member 51 is provided with first gate valves 511 having the same number as the first through holes 521, the first gate valves 511 are in one-to-one correspondence with the first through holes 521 for opening/closing the first through holes 521, and second gate valves 512 having the same number as the second through holes 522, the second gate valves 512 are in one-to-one correspondence with the second through holes 522 for opening/closing the second through holes 522; and the first gate valve 511 is located on the second chamber 82 side of the fixture 52, and the second gate valve 512 is located on the first chamber 81 side of the fixture 52.

It should be noted that, in this embodiment, in order to ensure that the clutch medium is located in the first chamber 81 in the normal state, as an optimal solution, the second chamber 82 should be disposed above the first chamber 81, meanwhile, the movable member 51, the fixed member 52 and the main shaft 33 are coaxially disposed, and the main shaft 33 penetrates through the movable member 51 and the fixed member 52, so as to ensure that the movable member 51 can only move along the axial direction of the main shaft 33 when receiving the force of the coil assembly 4, and in order to ensure that the movable member 51 and the fixed member 52 are further provided with adaptive guide structures 516, for example, guide posts are disposed on the movable member 51 and guide holes adapted to the movable member 51 are disposed on the fixed member 52; further, in order to ensure quick and accurate positioning when the valve assembly 5 is installed and define the position of the valve assembly 5 in the sealed chamber, a positioning pin 53 may be further provided, and after the positioning pin 53 is connected with the housing 1, only a positioning notch 517 or a positioning hole adapted to the positioning pin 53 needs to be provided on the valve assembly 5.

It should be further noted that, in a normal state, the first gate valve 511 is matched with the fixing member 52 to block the first through hole 521, that is, close the first through hole 521, and meanwhile, the second gate valve 512 is matched with the fixing member 52 to keep the second through hole 522 unobstructed, that is, open the second through hole 522, at this time, even if the second chamber 82 has residual clutch medium, the residual clutch medium can flow back to the first chamber 81 under the action of gravity.

In operation, the coil assembly 4 applies magnetic attraction to the movable member 51, the first gate valve 511 cooperates with the fixed member 52 to open the first through hole 521, and at this time, the clutch medium flows to the injection groove 513 through the third through hole 515 provided in the movable member 51 by centrifugal force and flows into the second chamber 82 through the first through hole 521, so that the housing 1 and the spindle 33 form a transmission connection.

As can be seen from the above, after the housing 1 is in driving connection with the output end of the engine through the driving part 121, the rotational speed of the housing 1 is also faster when the rotational speed of the engine is increased, and at this time, the centrifugal force applied to the clutch medium is also greater, so that the clutch medium can flow from the first chamber 81 into the second chamber 82 more quickly, and the driving force applied to the spindle 33 by the housing 1 is also greater, that is, the housing 1 can drive the spindle 33 to rotate more quickly.

Further, the movable member 51 is further provided with a flow injection groove 513 communicating with the first through hole 521, and a flow return groove 514 communicating with the second through hole 522.

Meanwhile, the first through hole 521 and the second through hole 522 are opened or closed, and when the magnetic attraction force applied to the movable member 51 by the coil assembly 4 is sufficiently large under the control of the coil assembly 4, the second through hole 522 is closed, and at this time, under the action of centrifugal force, the clutch medium can only flow from the first chamber 81 to the second chamber 82 via the first through hole 521; with the decrease of the magnetic attraction force applied to the movable member 51 by the coil assembly 4, the second through hole 522 can be opened when the first through hole 521 is opened, and at this time, the clutch medium flows from the first chamber 81 to the second chamber 82 through the first through hole 521 by the centrifugal force, and at the same time, the clutch medium in the second chamber 82 can also flow to the first chamber 81 through the second through hole 522, thereby forming a cycle.

Further, as shown in fig. 2 and 5, in order to lift the force applied by the housing 1 to the spindle 33, a transmission plate 34 is disposed at the extending end of the spindle 33, and when the second chamber 82 is filled with the clutch medium, the spindle 33 is in transmission connection with the housing 1 through the transmission plate 34.

Further, as shown in fig. 2 and 5, to facilitate the installation of the driving plate 34 on the main shaft 33, the electric control clutch according to the present embodiment further includes a connecting flange 35, where the driving plate 34 is connected to the main shaft 33 through the connecting flange 35.

Further, as shown in fig. 2, the electric control clutch according to the present embodiment further includes a speed sensor 6, where the speed sensor 6 includes a trigger 61 sleeved on the main shaft 33 and a speed detector 62 connected to the second shaft 32, and the actual rotation speed of the main shaft 33 can be monitored in real time by the speed sensor 6, so that the magnetic attraction force applied by the coil assembly 4 to the valve assembly 5 is controlled by the relation between the actual rotation speed and the desired rotation speed, so that the actual rotation speed tends to the desired rotation speed.

In the present embodiment, the speed detector 62 includes a sensor connector 622 and a probe 621 adapted to the trigger 61, the probe 621 and the sensor connector 622 form an electrical connection, the speed detector 62 is electrically connected to the outside through the sensor connector 622, and when the trigger 61 rotates relative to the probe 621, the probe 621 generates an electrical signal and feeds the electrical signal back to the external control circuit through the sensor connector 622.

Further, in this embodiment, the clutch medium is silicone oil.

As a second aspect of the present embodiment, an electrically controlled clutch type water pump includes a pump body 7 and an electrically controlled clutch as described above, the pump body 7 includes a pump housing 71 and a vane 72 provided in the pump housing 71, the other end of the main shaft 33 extends toward the pump body 7, penetrates the pump housing 71 and is in driving connection with the vane 72, wherein the main shaft 33 is connected with the pump housing 71 through a sealing connector 73; the pump housing 71 is connected to the second bearing 32.

In this embodiment, the coil connector 42 in the coil assembly 4 and the sensor connector 622 in the speed sensor 6 may be positioned on the pump housing 71 through the positioning connector 9, and the electric control clutch water pump according to this embodiment directly connects the pump housing 71 with the engine during use, and further provides a sealing ring 74 to ensure the tightness of the connection between the pump housing 71 and the engine.

The beneficial effects of the electric control clutch and the electric control clutch type water pump of the embodiment are that: the stability of magnetic conduction is ensured, and the response speed of the valve assembly 5 is improved, so that the efficiency of the electric control clutch is improved; the concrete steps are as follows:

by arranging the magnetic conduction ring 2 formed by the plurality of magnetic conduction layers 21, when the clutch works, the magnetic field generated by the coil assembly 4 can simultaneously generate acting force on the valve assembly 5 through the magnetic conduction ring 2, namely, the stability of magnetic conduction is higher; further, when the valve assembly 5 needs to be controlled to be opened or closed, the magnetic conduction stability is higher, and the magnetic conduction can be carried out in multiple ways, so that the acting force of the coil assembly 4 on the valve assembly 5 can be faster, the acting surface is larger, the acting force is more uniform, that is, the response speed of the valve assembly 5 is improved.

It should be noted that, the terms "first," "second," and the like are used for defining the components, and are merely for convenience in distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, so they should not be construed as limiting the scope of the present utility model.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description.

The foregoing is merely a preferred embodiment of the utility model, and it should be noted that modifications and enhancements can be made by those skilled in the art without departing from the principles of the present utility model. Such modifications and variations are also considered to be a departure from the scope of the utility model.

Claims (10)

1. An electrically controlled clutch, characterized in that: comprises a shell, a magnetic conduction ring, a first bearing, a second bearing, a main shaft, a coil component and a valve component, wherein,

an opening chamber is arranged in the shell, the opening chamber comprises an opening arranged at one end of the shell, and a transmission part used for being in transmission connection with an external power source is arranged on the circumferential surface of the shell;

the magnetic conduction ring comprises more than two magnetic conduction layers, the plurality of magnetic conduction layers are coaxially sleeved, a magnetic insulation layer is arranged between the adjacent magnetic conduction layers, and the magnetic conduction ring is embedded in the opening;

the first bearing and the magnetic conduction ring are coaxially arranged and embedded in the magnetic conduction ring;

the second bearing and the first bearing are sleeved on the main shaft, and one end of the main shaft extends from the outside of the shell towards the inside of the opening cavity;

the coil assembly is connected with the second bearing;

the main shaft, the first bearing, the magnetic ring and the shell are sequentially connected to form a sealed cavity, and the valve assembly is arranged in the sealed cavity and divides the sealed cavity into a first cavity and a second cavity;

in normal state, clutch medium is filled in the first cavity, during operation, a magnetic field is generated through the coil component, magnetic attraction is applied to the valve component through the magnetic conduction layer so that the valve component is opened, the first cavity is communicated with the second cavity, the clutch medium flows to the second cavity through the valve component under the action of centrifugal force, and the main shaft is in transmission connection with the shell through the clutch medium.

2. The electrically controlled clutch of claim 1, wherein: the shell comprises an upper cover and a lower shell, wherein the lower shell is annular, one ends of the upper cover and the lower shell are connected to form the opening chamber, the magnetic ring is arranged on the circumferential inner surface of the lower shell, and the magnetic ring and the lower shell are connected into a whole through welding.

3. The electrically controlled clutch of claim 2, wherein: the transmission part is arranged on the circumferential outer surface of the lower shell.

4. The electrically controlled clutch of claim 1, wherein: the valve component comprises a fixed part and a movable part, the coil component applies magnetic attraction to the movable part through the magnetic conduction ring, and,

the fixing piece is provided with at least one first through hole for the clutch medium to flow from the first chamber to the second chamber, and

at least one second through hole for the flow of the clutch medium from the second chamber to the first chamber;

the movable part is provided with first gate valves with the same number as the first through holes, the first gate valves are in one-to-one correspondence with the first through holes and are used for opening/closing the first through holes, and

second gate valves in the same number as the second through holes, the second gate valves being in one-to-one correspondence with the second through holes for opening/closing the second through holes;

and the first gate valve is located at the second chamber side of the fixture, and the second gate valve is located at the first chamber side of the fixture.

5. The electrically controlled clutch of claim 4, wherein: the movable piece is also provided with a flow injection groove communicated with the first through hole and a flow return groove communicated with the second through hole; the pouring slot and the reflux slot are respectively arranged in a third through hole penetrating through the movable piece.

6. The electrically controlled clutch of claim 1, wherein: the extension end of the main shaft is provided with a transmission plate, and when the second cavity is filled with clutch medium, the main shaft is in transmission connection with the shell through the transmission plate.

7. The electrically controlled clutch of claim 6, wherein: the transmission plate is connected with the main shaft through the connecting flange.

8. The electrically controlled clutch of claim 1, wherein: the speed sensor comprises a trigger sleeved on the main shaft and a speed detector connected to the second bearing.

9. The electrically controlled clutch of claim 1, wherein: the clutch medium is silicone oil.

10. An automatically controlled separation and reunion formula water pump which characterized in that: the electric control clutch comprises a pump body and the electric control clutch according to any one of claims 1 to 9, wherein the pump body comprises a pump shell and blades arranged in the pump shell, the other end of the main shaft extends towards the pump body, penetrates through the pump shell and is in transmission connection with the blades, and the pump shell is connected with the second bearing.