CN217926058U - Closed impeller temperature control silicone oil clutch water pump with flow guide function - Google Patents

Abstract

The application provides a closed impeller control by temperature change silicon oil clutch water pump with water conservancy diversion function belongs to engine cooling system technical field. The closed impeller temperature control silicone oil clutch water pump with the flow guide function comprises a clutch mechanism and a water pump mechanism. The clutch mechanism comprises a shell, a driving shaft, a driving plate and a bolt, the driving shaft is rotatably connected into the shell, the driving plate is installed at one end of the driving shaft, the bolt penetrates through the shell in a sliding mode, and the water pump mechanism comprises a pump shell, a water outlet pipe, a centrifugal assembly, a bimetal temperature sensor and a guide plate. This application reduces loss of impact through the water conservancy diversion structure, improves water pump hydraulic efficiency, reduces water pump power consumption, improves engine fuel economy, energy saving and emission reduction, and on the other hand has also avoided rivers to strike the gassing in the export department of pump, has avoided the cavitation effect that the bubble here produced and cracked to the water pump body production, improves water pump life to a certain extent.

Description

Closed impeller temperature control silicone oil clutch water pump with water conservancy diversion function

Technical Field

The application relates to the field of engine cooling systems, in particular to a closed impeller temperature control silicone oil clutch water pump with a flow guide function.

Background

The cooling system is an important component of the engine. During engine operation, the parts in contact with the hot gases or exhaust gases are heated strongly, requiring cooling systems to dissipate the excess heat from these parts, which can have various undesirable consequences, such as: deterioration of the lubricating oil and damage of a normal oil film; the heated parts expand to destroy the normal clearance of the kinematic pair; the part is reduced in thermal mechanical property and even fails, and the like. In addition, the cooling cannot be excessive, otherwise, poor combustion and increased emission can be caused, and the fuel economy is reduced; the viscosity of the engine oil is increased, the friction loss of a kinematic pair is aggravated, the engine works roughly, the power of the engine is reduced, and the service life is shortened. The engine cooling system is divided into a water cooling system and an air cooling system, the air cooling system takes air as a cooling medium and the water cooling system takes cooling liquid as a cooling medium, and most of automobile engines are water cooling systems and forced closed circulating water cooling systems. The water pump is a key part of a water-cooled engine cooling system and plays a significant role. For the forced closed type circulating water cooling system, the water pump is a power source, in an automobile engine, the water pump is mostly a centrifugal pump, the pressure of cooling liquid is improved through the rotation of the water pump, and the forced cooling liquid circularly flows in the engine. The water pump is usually driven by a crankshaft pulley through a belt, consumes the power of an engine, is used as a mechanical part, and has flow loss (including friction resistance loss and impact loss), flow loss (inner leakage and outer leakage) and mechanical loss (water seal and bearing) according to the structural principle of a centrifugal pump, so that the improvement of the efficiency of the water pump is particularly important. The efficiency of the water pump is determined by volumetric efficiency, hydraulic efficiency and mechanical efficiency, the index for measuring the centrifugal rate leakage amount is expressed by volumetric efficiency and is equal to the ratio of actual flow to theoretical flow, and the influencing factors are the sealing condition of the inner leakage blocking ring and the outer leakage ring. The hydraulic efficiency refers to the energy given by the impeller of the pump in unit time, and the influencing factors include the shape of the pump flow channel, the working conditions (pressure, flow rate and rotating speed), the type of fluid and the surface smoothness of the flow channel. Mechanical efficiency is used for measuring the size of mechanical loss, the influence factor has friction loss of a bearing, friction loss of an impeller disc and the like, the existing electric control silicon oil clutch water pump does not have a flow guide function, the outlet of the water pump is often in a right-angle shape, the design can finally meet the cooling requirement of the whole engine, but due to the lack of research on the operation efficiency of the water pump, the outlet structure in the right-angle shape can generate larger impact and eddy current to cause impact loss, especially, kinetic energy is maximum when cooling liquid reaches the outlet through diffusion, the impact loss is particularly obvious, the efficiency of the water pump is low, the consumed engine power is more, and the energy conservation and the environmental protection are not enough.

How to invent a closed impeller temperature control silicone oil clutch water pump with a flow guide function to improve the problems becomes a problem to be solved urgently by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In order to compensate for above not enough, the application provides a closed impeller control by temperature change silicon oil clutch water pump with water conservancy diversion function, aims at improving the problem that automatically controlled silicon oil clutch water pump does not have the water conservancy diversion function.

The embodiment of the application provides a closed impeller control by temperature change silicon oil clutch water pump with water conservancy diversion function, including clutch mechanism and water pump mechanism.

The clutch mechanism comprises a shell, a driving shaft, a driving plate and a bolt, wherein the driving shaft is rotatably connected into the shell, the driving plate is installed at one end of the driving shaft, the bolt penetrates through the shell in a sliding manner, the water pump mechanism comprises a pump shell, a water outlet pipe, a centrifugal assembly, a bimetal temperature sensor and a guide plate, one end of the pump shell is in threaded connection with the bolt, a volute chamber is arranged on the inner surface of the pump shell, the water outlet pipe is communicated with the volute chamber, the guide plate is installed in the water outlet pipe and is in an arc shape, the centrifugal assembly is rotatably connected into the pump shell, an oil storage cavity which is attached to the centrifugal assembly is formed in one end of the pump shell, and one end of the bimetal temperature sensor is installed on the inner wall of the oil storage cavity.

In the above-mentioned realization process, the driving shaft is connected with the transmission of engine drive axle, the driving shaft drives the initiative board and rotates in the casing, the bolt is used for making casing and pump case link together, can get rid of the coolant liquid to the outlet pipe through the volute when centrifugal component rotates, the guide plate is used for making the coolant liquid flow water pump along the water conservancy diversion structure and get into the engine, reduce unnecessary impact loss here, improve water pump efficiency, bimetal temperature sensor is used for the induction engine temperature, whether the control initiative board drives centrifugal component and rotates.

In a specific embodiment, centrifugal component includes driven plate, control valve block, driven shaft, impeller body and rotating ring, the driven shaft rotate connect in the pump case, the driven plate connect in driven shaft one end, impeller body install in the driven shaft other end, the control valve block connect in driven plate one side, the rotating ring install in the driven shaft surface, the driven plate with the oil reservoir laminating mutually, the bimetal temperature sensor other end inlays in the drive pin of control valve block.

In the implementation process, the bimetal temperature sensor is used for controlling the working state of the control valve plate, so that the control valve plate is opened or closed, the driving plate transmits torque through the shearing viscous force of silicon oil to drive the driven plate to rotate, the driven plate drives the impeller body to rotate through the driven shaft, and the cooling liquid is thrown to the water outlet pipe through the volute chamber through centrifugal acting force when the impeller body rotates.

In a specific embodiment, a static ring is fixedly connected to the inner wall of the pump shell, and the static ring is connected with the dynamic ring in a sealing mode.

In the implementation process, the static ring and the dynamic ring are used for sealing, and cooling liquid and silicone oil are prevented from flowing to the centrifugal assembly.

In a specific embodiment, the inner surface of the driven plate is provided with oil inlet holes, and the control valve plates correspond to the oil inlet holes one to one.

In the implementation process, the oil inlet hole is used for enabling the silicone oil to flow out of the oil storage cavity.

In a specific embodiment, a driven cavity is formed in one side of the driven plate, and the diameter of the driving plate is smaller than that of the driven cavity.

In a specific embodiment, the outer surface of the driving plate is gear-shaped, and the inner surface of the driven cavity is gear-shaped.

In the implementation process, the driven cavity is used for improving the shearing force between the driving plate and the driven plate and improving the efficiency when the driving shaft drives the driven shaft to rotate.

In a specific embodiment, a working cavity is formed in the inner surface of the shell, and the driven plate and the driving plate can rotate in the working cavity.

In the implementation process, the working cavity is used for enabling the shearing force of the silicon oil to enable the driving plate to drive the driven plate to rotate.

In a specific embodiment, the water pump mechanism further comprises an oil return pipe and a one-way valve, the working chamber is communicated with the oil storage chamber through the oil return pipe, and the one-way valve is arranged on the oil return pipe.

In the implementation process, the oil return pipe is used for enabling the silicone oil in the working cavity to flow back to the oil storage cavity, and the one-way valve is used for controlling the communication state of the oil return pipe.

In a specific embodiment, a limiting shaft is fixedly connected to the outer surface of the driving shaft, a groove is formed in the inner surface of the shell, and the limiting shaft is in clearance fit with the groove.

In the implementation process, the limiting shaft and the groove are used for limiting the driving shaft, and the stability of the driving shaft during rotation is improved.

In a specific embodiment, the inner surface of the shell is provided with a through hole, one end of the pump shell is provided with a thread groove, the bolt is in clearance fit with the through hole, and the bolt is in threaded connection with the thread groove.

In the implementation process, the bolt, the thread groove and the through hole are used for connecting the silicon oil clutch and the water pump together.

Drawings

In order to more clearly explain the technical solutions of the embodiments of the present application, 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 application and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a closed impeller temperature-control silicone oil clutch water pump with a flow guide function according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a clutch mechanism provided in an embodiment of the present application;

FIG. 3 is a schematic structural diagram of an active plate according to an embodiment of the present disclosure;

fig. 4 is a first perspective structural schematic diagram of a water pump mechanism according to an embodiment of the present disclosure;

fig. 5 is a structural schematic diagram of a second perspective of the water pump mechanism according to the embodiment of the present application;

FIG. 6 is a schematic diagram of a centrifuge assembly according to an embodiment of the present application;

FIG. 7 is a schematic diagram of a driven plate and an oil inlet hole according to an embodiment of the present disclosure.

In the figure: 10-a clutch mechanism; 110-shell; 120-driving shaft; 130-a limiting shaft; 140-an active plate; 150-bolt; 160-a working chamber; 20-a water pump mechanism; 210-a pump housing; 220-water outlet pipe; 230-a centrifuge assembly; 231-a driven plate; 232-a driven cavity; 233-control the valve plate; 234-driven shaft; 235-an impeller body; 236-a rotating ring; 237-oil inlet hole; 240-oil reservoir; 250-an oil return pipe; 260-one-way valve; 270-bimetal temperature sensor; 280-stationary ring; 290-baffle.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1, the present application provides a closed impeller temperature control silicone oil clutch water pump with a flow guiding function, which includes a clutch mechanism 10 and a water pump mechanism 20.

The clutch mechanism 10 is fixedly connected with the water pump mechanism 20 through threads, the clutch mechanism 10 is in transmission connection with an engine driving shaft, the water pump mechanism 20 is enabled to work or stop according to temperature change, and the work of the water pump is intelligently controlled.

Referring to fig. 1, 2 and 3, the clutch mechanism 10 includes a housing 110, a driving shaft 120, a driving plate 140 and a bolt 150, wherein the driving shaft 120 is rotatably connected in the housing 110, the driving plate 140 is installed at one end of the driving shaft 120, specifically, the driving plate 140 is fixedly installed at one end of the driving shaft 120 by welding, the bolt 150 slidably penetrates through the housing 110, the driving shaft 120 is in transmission connection with an engine driving shaft, and the driving shaft 120 drives the driving plate 140 to rotate in the housing 110.

In some specific embodiments, the outer surface of the driving shaft 120 is fixedly connected with a limiting shaft 130, the inner surface of the casing 110 is provided with a groove, the limiting shaft 130 is in clearance fit with the groove, and the limiting shaft 130 and the groove are used for limiting the driving shaft 120, so as to improve the stability of the driving shaft 120 during rotation.

Referring to fig. 1, 2, 4 and 5, the water pump mechanism 20 includes a pump housing 210, a water outlet pipe 220, a centrifugal assembly 230, a bimetal temperature sensor 270 and a guide plate 290, one end of the pump housing 210 is connected with a bolt 150 by a thread, a volute is arranged on the inner surface of the pump housing 210, the water outlet pipe 220 is communicated with the volute, the guide plate 290 is arranged in the water outlet pipe 220, specifically, the guide plate 290 and the water outlet pipe 220 are in an integral structure, the guide plate 290 is in an arc shape, the centrifugal assembly 230 is rotatably connected in the pump housing 210, one end of the pump housing 210 is provided with an oil storage cavity 240 attached to the centrifugal assembly 230, one end of the bimetal temperature sensor 270 is arranged on the inner wall of the oil storage cavity 240, specifically, one end of the bimetal temperature sensor 270 is fixedly arranged on the inner wall of the oil storage cavity 240 by welding, when the centrifugal assembly 230 rotates, the coolant is thrown to the water outlet pipe 220 through the volute, the guide plate 290 is used for enabling the coolant to flow out of the water pump along the guide structure and enter the engine, thereby reducing unnecessary impact loss and improving the efficiency of the water pump, the bimetal temperature sensor 270 is used for sensing the temperature of the engine, and controlling whether the driving plate 140 drives the centrifugal assembly 230 to rotate.

In some specific embodiments, the water pump mechanism 20 further includes an oil return pipe 250 and a one-way valve 260, the working chamber 160 is communicated with the oil storage chamber 240 through the oil return pipe 250, the one-way valve 260 is disposed on the oil return pipe 250, a through hole is formed in the inner surface of the housing 110, a threaded groove is formed at one end of the pump housing 210, the bolt 150 is in clearance fit with the through hole, the bolt 150 is in threaded connection with the threaded groove, the oil return pipe 250 is used for enabling the silicone oil in the working chamber 160 to flow back to the oil storage chamber 240, the one-way valve 260 is used for controlling the communication state of the oil return pipe 250, and the bolt 150, the threaded groove and the through hole are used for enabling the silicone oil clutch and the water pump to be connected together.

Referring to fig. 2, 3, 4, 6, and 7, the centrifugal assembly 230 includes a driven plate 231, a control valve plate 233, a driven shaft 234, an impeller body 235 and a movable ring 236, the driven shaft 234 is rotatably connected in the pump housing 210, the driven plate 231 is connected to one end of the driven shaft 234, specifically, the driven plate 231 is fixedly connected to one end of the driven shaft 234 by welding, the impeller body 235 is installed at the other end of the driven shaft 234, specifically, the impeller body 235 is fixedly installed at the other end of the driven shaft 234 by welding, the impeller body 235 is a closed impeller, the control valve plate 233 is connected to one side of the driven plate 231, the movable ring 236 is installed on the outer surface of the driven shaft 234, specifically, the movable ring 236 is fixedly installed on the outer surface of the driven shaft 234 by gluing, the impeller driven plate 231 is attached to the oil storage cavity 240, the other end of the bimetal temperature sensor 270 is embedded in a transmission pin of the control valve plate 233, the bimetal temperature sensor 270 is used for controlling the working state of the control valve plate 233 to open or close the control valve plate 233, the drive plate 140 transmits torque through shear adhesion of silicone oil, the driven plate 231 drives the driven plate 231 to rotate, the driven plate 231 drives the driven plate 231 to rotate, and the centrifugal vortex 220 is driven by the centrifugal vortex fluid through an acting force when the impeller body 235 rotates.

In some specific embodiments, the stationary ring 280 is fixedly connected to the inner wall of the pump housing 210, specifically, the stationary ring 280 is fixedly connected to the inner wall of the pump housing 210 by gluing, the stationary ring 280 is hermetically connected to the moving ring 236, the oil inlet 237 is formed in the inner surface of the driven plate 231, the control valve plates 233 correspond to the oil inlet 237 one to one, the driven cavity 232 is formed in one side of the driven plate 231, the diameter of the driving plate 140 is smaller than that of the driven cavity 232, the outer surface of the driving plate 140 is in a gear shape, the inner surface of the driven cavity 232 is in a gear shape, the stationary ring 280 and the moving ring 236 are used for sealing to prevent the cooling liquid and the silicone oil from flowing to the driven shaft 234, the oil inlet 237 is used for allowing the silicone oil to flow out of the oil cavity 240, the driven cavity 232 is used for improving the shearing force between the driving plate 140 and the driven plate 231, improving the efficiency when the driving shaft 120 drives the driven shaft 234 to rotate, and the working cavity 160 is used for enabling the driving plate 140 to drive the driven plate 231 to rotate by the shearing force of the silicone oil.

The working principle of the device is as follows: when the engine is just started, the driving shaft 120 rotates along with the driving shaft of the engine, at this time, the water temperature is low, the bimetal temperature sensor 270 does not work, the control valve plate 233 makes the oil inlet 237 in a closed state, the silicone oil in the oil storage chamber 240 does not flow into the working chamber 160, the driving shaft 120 drives the driving plate 140 to rotate, the torque of the driving plate 140 cannot be transmitted to the driven plate 231, the clutch is in a separated state, the driving shaft 120 rotates and slips, the driven shaft 234 drives the impeller body 235 to rotate at a very low rotation speed under the friction action of the sealing felt ring and the bearing, when the engine load is increased and the temperature of the cooling liquid is increased, the temperature of the air flow at the core part of the clutch is increased along with the increase of the temperature, the high-temperature air flow blows on the bimetal temperature sensor 270, the bimetal temperature sensor 270 is heated and deformed, the control valve plate 233 is driven by the driving pin to deflect by an angle, and the oil inlet 237 on the driven plate 231 is opened after the air flow temperature exceeds 65 ℃, the silicon oil in the oil storage cavity 240 enters the working cavity 160 through the oil inlet hole 237, the viscous silicon oil flows into the gap between the driving plate 140 and the driven plate 231, the torque on the driving plate 140 is transmitted to the driven plate 231, the driven plate 231 drives the impeller body 235 to rotate at a high speed through the driven shaft 234, the clutch is in a joint state at the moment, meanwhile, the cooling liquid is thrown to the inner wall of the runner of the volute chamber under the action of the rotating centrifugal force of the impeller body 235, the cooling liquid is gradually expanded along the runner of the volute chamber and sent to the water outlet pipe 220, finally, the impact and the vortex are formed through the guide plate 290, the impact loss is reduced, the hydraulic efficiency of the water pump is improved, the power consumption of the water pump is reduced, the fuel economy of the engine is improved, meanwhile, the silicon oil entering the working cavity 160 is thrown to the outer edge under the action of the centrifugal force, the one-way valve 260 is jacked, and flows back to the oil storage cavity 240 through the oil return pipe 250, and then enters the working cavity 160, so relapse, form the circulation, silicon oil passes the heat to the clutch housing and obtains the cooling when the circulation, with avoid during operation silicon oil high temperature, thereby reached the purpose that has the water conservancy diversion function, reduce the loss of impact through the water conservancy diversion structure, improve water pump hydraulic efficiency, reduce water pump power consumption, improve engine fuel economy, energy saving and emission reduction, on the other hand, rivers have also been avoided strikeing in the export department of pump and have produced the bubble, avoided the bubble here generation and cracked cavitation to the water pump body production, improve water pump life to a certain extent.

It should be noted that specific model specifications of the casing 110, the driving shaft 120, the driving plate 140, the bolt 150, the pump shell 210, the water outlet pipe 220, the driven plate 231, the control valve plate 233, the driven shaft 234, the impeller body 235, the moving ring 236, the check valve 260, the bimetal temperature sensor 270, and the stationary ring 280 need to be determined by model selection according to actual specifications of the device, and a specific model selection calculation method adopts the prior art in the field, and therefore, detailed description is omitted.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

The above description is only for the specific embodiments of the present application, but the scope of the present application 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 application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A closed impeller temperature control silicone oil clutch water pump with a flow guide function is characterized by comprising

The clutch mechanism (10) comprises a shell (110), a driving shaft (120), a driving plate (140) and a bolt (150), wherein the driving shaft (120) is rotatably connected in the shell (110), the driving plate (140) is installed at one end of the driving shaft (120), and the bolt (150) penetrates through the shell (110) in a sliding manner;

the water pump mechanism (20) comprises a pump shell (210), a water outlet pipe (220), a centrifugal assembly (230), a bimetal temperature sensor (270) and a guide plate (290), wherein one end of the pump shell (210) is in threaded connection with the bolt (150), a volute chamber is arranged on the inner surface of the pump shell (210), the water outlet pipe (220) is communicated with the volute chamber, the guide plate (290) is installed in the water outlet pipe (220), the guide plate (290) is in an arc shape, the centrifugal assembly (230) is rotationally connected into the pump shell (210), an oil storage cavity (240) which is attached to the centrifugal assembly (230) is formed in one end of the pump shell (210), and one end of the bimetal temperature sensor (270) is installed on the inner wall of the oil storage cavity (240).

2. The closed impeller temperature-control silicone oil clutch water pump with the flow guiding function as claimed in claim 1, wherein the centrifugal assembly (230) comprises a driven plate (231), a control valve plate (233), a driven shaft (234), an impeller body (235) and a moving ring (236), the driven shaft (234) is rotatably connected in the pump housing (210), the driven plate (231) is connected to one end of the driven shaft (234), the impeller body (235) is mounted at the other end of the driven shaft (234), the control valve plate (233) is connected to one side of the driven plate (231), the moving ring (236) is mounted on the outer surface of the driven shaft (234), the driven plate (231) is attached to the oil storage cavity (240), and the other end of the bimetal temperature sensor (270) is embedded in a transmission pin of the control valve plate (233).

3. The closed impeller temperature-controlled silicone oil clutch water pump with the flow guiding function as recited in claim 2, characterized in that a stationary ring (280) is fixedly connected to the inner wall of the pump casing (210), and the stationary ring (280) is connected with the movable ring (236) in a sealing manner.

4. The closed impeller temperature-control silicone oil clutch water pump with the flow guide function as claimed in claim 2, wherein an oil inlet hole (237) is formed in an inner surface of the driven plate (231), and the control valve plates (233) correspond to the oil inlet hole (237) in a one-to-one manner.

5. The closed impeller temperature control silicone oil clutch water pump with the flow guide function as claimed in claim 2, wherein a driven cavity (232) is formed in one side of the driven plate (231), and the diameter of the driving plate (140) is smaller than that of the driven cavity (232).

6. The closed impeller temperature-control silicone oil clutch water pump with the flow guide function as recited in claim 5, wherein the outer surface of the driving plate (140) is gear-shaped, and the inner surface of the driven cavity (232) is gear-shaped.

7. The closed impeller temperature-control silicone oil clutch water pump with the flow guiding function as claimed in claim 6, wherein a working cavity (160) is formed in an inner surface of the housing (110), and the driven plate (231) and the driving plate (140) can rotate in the working cavity (160).

8. The closed impeller temperature-control silicone oil clutch water pump with the flow guiding function as claimed in claim 7, wherein the water pump mechanism (20) further comprises an oil return pipe (250) and a one-way valve (260), the working chamber (160) is communicated with the oil storage chamber (240) through the oil return pipe (250), and the one-way valve (260) is disposed on the oil return pipe (250).

9. The closed impeller temperature-control silicone oil clutch water pump with the flow guide function as claimed in claim 1, wherein a limiting shaft (130) is fixedly connected to an outer surface of the driving shaft (120), a groove is formed in an inner surface of the housing (110), and the limiting shaft (130) is in clearance fit with the groove.

10. The closed impeller temperature-controlled silicone oil clutch water pump with the flow guide function as claimed in claim 1, wherein a through hole is formed in an inner surface of the housing (110), a thread groove is formed in one end of the pump housing (210), the bolt (150) is in clearance fit with the through hole, and the bolt (150) is in threaded connection with the thread groove.

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