Water pump

Abstract

The invention belongs to the technical field of liquid medium conveying, and provides a water pump which comprises a main driving mechanism, an auxiliary driving mechanism, a first connecting assembly and a first control assembly. The master driving mechanism and the slave driving mechanism are oppositely arranged; the first connecting assembly is used for switching between a first connecting state and a first separating state, in the first connecting state, the slave driving mechanism is connected with the master driving mechanism through the first connecting assembly, and in the first separating state, the slave driving mechanism is separated from the master driving mechanism; the first control assembly is used for switching the first connection assembly from the first separation state to the first connection state. According to the embodiment of the invention, when the first connecting assembly is in the first connecting state, the slave driving mechanism and the master driving mechanism can provide flow output; in the first separation state, the auxiliary driving mechanism is separated from the main driving mechanism, the main driving mechanism provides flow output, single-flow output or double-flow output is achieved, then the flow requirements of different circulating systems are met, and the application range is wide.

Description

Technical Field

[0001] The invention relates to the technical field of liquid medium transportation, and in particular to a water pump. Background Art

[0002] A water pump is a machine that transports liquids or increases the pressure of liquids. It transfers the mechanical energy of the prime mover or other external energy to the liquid to increase the energy of the liquid. It is mainly used to transport liquids including water, oil, acid and alkali liquids, emulsions, suspensions and liquid metals.

[0003] In the prior art, a water pump adjusts the flow rate by adjusting the speed of its own impeller, but the water pump can only provide one flow rate requirement and has a narrow scope of application. Summary of the invention

[0004] The invention provides a water pump, which is used to solve the defect of narrow application range in the prior art.

[0005] The present invention provides a water pump, comprising:

[0006] Main drive mechanism;

[0007] A slave driving mechanism, wherein the main driving mechanism and the slave driving mechanism are arranged opposite to each other;

[0008] a first connecting assembly, used to switch between a first connected state and a first separated state, in which the slave drive mechanism is connected to the master drive mechanism via the first connecting assembly in the first connected state, and in which the slave drive mechanism is separated from the master drive mechanism in the first separated state;

[0009] A first control component, wherein the first control component is used to switch the first connecting component from a first separated state to a first connected state.

[0010] According to a water pump provided by an embodiment of the present invention, the first connecting assembly includes:

[0011] A fixing member, arranged at one of the main driving mechanism and the slave driving mechanism;

[0012] a moving component, disposed in the other of the main drive mechanism and the slave drive mechanism;

[0013] In the first connection state, the moving component is connected to the fixing component, and in the first separation state, the moving component is separated from the fixing component.

[0014] According to a water pump provided by an embodiment of the present invention, the moving component comprises:

[0015] A mounting base connected to the main driving mechanism, wherein a first limiting portion is provided at one end of the mounting base away from the main driving mechanism;

[0016] An elastic member, mounted on the mounting base, wherein a first end of the elastic member abuts against the first limiting portion;

[0017] A moving member, sleeved on the elastic member, wherein one end of the moving member close to the main driving mechanism has a second limiting portion, and the second limiting portion is used for limiting the second end of the elastic member;

[0018] In the first connection state, the movable member is connected to the fixed member, and the elastic member is in a compressed state; in the first separation state, the movable member is separated from the fixed member, and the elastic member is in a normal state.

[0019] According to a water pump provided by an embodiment of the present invention, a gasket is provided on a side of the moving part facing the main driving mechanism.

[0020] According to a water pump provided by an embodiment of the present invention, the moving component comprises:

[0021] Elastic parts;

[0022] A moving member, wherein the moving member is connected to the main driving mechanism through the elastic member;

[0023] In the first connection state, the movable member is connected to the fixed member, and the elastic member is in a stretched state; in the first separation state, the movable member is separated from the fixed member, and the elastic member is in a normal state.

[0024] According to a water pump provided by an embodiment of the present invention, the moving component further includes:

[0025] A shaft disc, wherein the first end of the shaft disc is coaxially connected to the output of the main driving mechanism, and the elastic member is arranged at the second end of the shaft disc.

[0026] According to a water pump provided by an embodiment of the present invention, the moving part is an active friction plate;

[0027] The fixing member is a driven friction plate.

[0028] According to a water pump provided by an embodiment of the present invention, the first control component includes:

[0029] Iron core;

[0030] A coil, disposed on the iron core;

[0031] In the first connection state, the magnetic force of the iron core causes the moving part to abut against the fixed part; in the first separation state, the moving part is separated from the fixed part.

[0032] According to a water pump provided by an embodiment of the present invention, in the first separation state, the movable member maintains a first gap with the fixed member under the action of the working fluid on the main drive mechanism side.

[0033] According to a water pump provided by an embodiment of the present invention, the main driving mechanism comprises:

[0034] Driving parts;

[0035] A driving shaft connected to the driving member;

[0036] An impeller component, wherein the impeller component is arranged opposite to the driving shaft;

[0037] a second connecting assembly, used to switch between a second connected state and a second separated state, in which the impeller component is connected to the driving shaft through the second connecting assembly in the second connected state, and in which the impeller component is separated from the main driving shaft in the second separated state;

[0038] The second control component is used to switch the second connection component from a second separation state to a second connection state.

[0039] The water pump provided by the embodiment of the present invention includes a main drive mechanism and a slave drive mechanism that are relatively arranged. The first connecting component switches between a first connected state and a first separated state. In the first connected state, the slave drive mechanism is connected to the main drive mechanism through the first connecting component, and the slave drive mechanism and the main drive mechanism work synchronously. Both the slave drive mechanism and the main drive mechanism can provide flow output; in the first separated state, the slave drive mechanism is separated from the main drive mechanism, and the main drive mechanism provides flow output. The first connecting component is switched between the first separated state and the first connected state through the first control component to achieve single flow output or dual flow output, thereby meeting the flow requirements of different circulation systems and having a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 is a schematic structural diagram of a water pump provided by an embodiment of the present invention;

[0042] Figure 2 It is one of the partial structural schematic diagrams of the first connecting component provided by an embodiment of the present invention;

[0043] Figure 3This is the second local structural schematic diagram of the first connecting component provided in an embodiment of the present invention.

[0044] Reference numerals:

[0045] 1. Main driving mechanism; 11. Driving shaft; 12. Main impeller;

[0046] 2. slave driving mechanism; 21. driven shaft; 22. slave impeller;

[0047] 3. First connecting assembly; 31. Fixing member; 32. Moving member; 321. Elastic member; 322. Moving member; 3221. Second limiting portion; 323. Shaft plate; 33. Mounting base; 331. First limiting portion;

[0048] 4. first control component; 41. iron core; 42. coil;

[0049] 5. Driving parts;

[0050] 61. First shell; 62. Second shell; 63. Third shell; 64. Isolation shell. DETAILED DESCRIPTION

[0051] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0052] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0053] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0054] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0056] Combine the following Figure 1-Figure 3 A water pump according to an embodiment of the present invention is described.

[0057] The embodiment of the present invention provides a water pump. Figure 1 The schematic diagram of the structure of the water pump provided by the embodiment of the present invention is illustrated as follows: Figure 1 As shown, the water pump includes a main driving mechanism 1, a slave driving mechanism 2, a first connecting component 3 and a first control component 4.

[0058] Among them, the main driving mechanism 1 and the slave driving mechanism 2 are arranged opposite to each other; the first connecting component 3 is used to switch between a first connected state and a first separated state. In the first connected state, the slave driving mechanism 2 is connected to the main driving mechanism 1 through the first connecting component 3, and in the first separated state, the slave driving mechanism 2 is separated from the main driving mechanism 1; the first control component 4 is used to switch the first connecting component 3 from the first separated state to the first connected state.

[0059] It can be understood that the first connecting component 3 is arranged between the main driving mechanism 1 and the slave driving mechanism 2, and the first connecting component 3 switches between a first connecting state and a first separating state, thereby realizing the connection and separation of the main driving mechanism 1 and the slave driving mechanism 2; in the first connecting state, the slave driving mechanism 2 is connected to the main driving mechanism 1 through the first connecting component 3, the main driving mechanism 1 and the slave driving mechanism 2 rotate synchronously, and both the slave driving mechanism 2 and the main driving mechanism can provide flow output; in the first separating state, the slave driving mechanism 2 is separated from the main driving mechanism 1, the slave driving mechanism 2 is in a stopped state, and the main driving mechanism 1 can provide flow output.

[0060] It can be understood that the first control component 4 is used to switch the first connecting component 3 from the first separated state to the first connected state.

[0061] It should be noted that the first control component 4 may be controlled electrically or mechanically, or may be controlled in combination with the electrical control method.

[0062] It can be understood that, according to the flow output requirements, the state of the first connecting component 3 is controlled. When one flow output is required, the first connecting component 3 is in the first separation state, the main drive mechanism 1 is in a working state, and the slave drive mechanism 2 is separated from the main drive mechanism 1, so that the slave drive mechanism 2 is in a stopped state; when two flow outputs are required, the first control component 4 switches the first connecting component 3 from the first separation state to the first connection state, the slave drive mechanism 2 is connected to the main drive mechanism 1, and the main drive mechanism 1 drives the slave drive mechanism 2 to rotate synchronously, so that both the main drive mechanism 1 and the slave drive mechanism 2 are in a working state.

[0063] The water pump provided by the embodiment of the present invention includes a main drive mechanism 1 and a slave drive mechanism 2 which are arranged relatively to each other, and a first connecting component 3 which switches between a first connected state and a first separated state. In the first connected state, the slave drive mechanism 2 is connected to the main drive mechanism 1 through the first connecting component 3, and the slave drive mechanism 2 and the main drive mechanism 1 work synchronously, and both the slave drive mechanism 2 and the main drive mechanism can provide flow output; in the first separated state, the slave drive mechanism 2 is separated from the main drive mechanism 1, and the main drive mechanism 1 provides flow output, and the first connecting component 3 is switched between the first separated state and the first connected state through the first control component 4, so as to realize single flow output or dual flow output, thereby meeting the flow requirements of different circulation systems, and having a wide range of applications.

[0064] It should be noted that if the main drive mechanism 1 and the slave drive mechanism 2 are fixedly connected, two flow outputs can be provided, and the main drive mechanism 1 and the slave drive mechanism 2 must work at the same time and cannot be disconnected. In actual use, there is a situation where only one end (the main drive mechanism 1) needs to work, and the other end (the slave drive mechanism 2) has no working demand and is forced to work at the same time, resulting in the slave drive mechanism 2 working at the same time, generating unnecessary power consumption loss, which is not conducive to reducing energy consumption of the whole vehicle. However, the present application sets a first connecting component 3 between the main drive mechanism 1 and the slave drive mechanism 2, and controls the operation and stop of the slave drive mechanism 2 according to the working requirements, thereby helping to reduce energy consumption of the whole vehicle.

[0065] In the water pump provided by the embodiment of the present invention, the main drive mechanism 1 and the slave drive mechanism 2 can be connected and disconnected through the first connecting assembly 3, and the operation and disconnection of the slave drive mechanism 2 can be adjusted as needed, thereby achieving fine adjustment and reducing the energy consumption of the whole vehicle. Among them, the operation of the slave drive mechanism 2 is that the slave drive mechanism 2 is connected to the main drive mechanism 1, and the non-operation of the slave drive mechanism 2 is that the slave drive mechanism 2 is separated from the main drive mechanism 1.

[0066] In one embodiment of the present invention, the main driving mechanism 1 includes a driving member 5 , a driving shaft 11 and an impeller component connected to the driving shaft 11 , and the slave driving mechanism 2 includes a driven shaft 21 and a slave impeller 22 disposed on the driven shaft 21 .

[0067] It can be understood that the driving shaft 11 is connected to the output of the driving member 5, the impeller component is connected to one end of the driving shaft 11, the impeller component includes a main impeller 12, the driving member 5 drives the driving shaft 11 to rotate, and the driving shaft 11 can drive the main impeller 12 to rotate.

[0068] It can be understood that the first connecting component 3 is arranged between the driving shaft 11 and the driven shaft 21. When the first connecting component 3 is in the first connection state, the driving shaft 11 and the driven shaft 21 are connected, the driving shaft 11 drives the driven shaft 21 to rotate synchronously, and the impeller 22 on the driven shaft 21 rotates synchronously; when the first connecting component 3 is in the first separation state, the driving shaft 11 and the driven shaft 21 are separated.

[0069] In one embodiment of the present invention, the characteristic parameters of the main impeller 12 and the secondary impeller 22 may be the same or different, wherein the characteristic parameters include at least one of diameter, height, and number of blades.

[0070] It can be understood that the main impeller 12 and the secondary impeller 22 have the same characteristic parameters, which may be the same impeller diameter, the same impeller height, and the same number of impellers.

[0071] It can be understood that if the characteristic parameters between the main impeller 12 and the slave impeller 22 are different, the main impeller 12 and the slave impeller 22 can be designed to have different impeller diameters, the main impeller 12 and the slave impeller 22 can be designed to have different impeller heights, and the main impeller 12 and the slave impeller 22 can be designed to have different numbers of impellers; the main impeller 12 and the slave impeller 22 can also be designed to have two different impeller diameters, impeller heights, and numbers of blades, or the impeller diameters, impeller heights, and numbers of blades are all different.

[0072] It should be noted that the larger the diameter of the impeller (main impeller 12 and secondary impeller 22), the more medium can be driven and the greater the output flow rate. The higher the height of the impeller, the wider the impeller blades, which can drive more medium in the water chamber and the greater the output flow rate. The more impeller blades there are, the more medium can be driven and the greater the output flow rate.

[0073] It should be noted that the impeller characteristic parameters may also be parameters that affect the flow rate, such as the curvature and radian of the impeller blades.

[0074] In one embodiment of the present invention, Figure 2 One of the partial structural diagrams of the first connecting component provided by an embodiment of the present invention is illustrated, such as Figure 2 As shown, the first connecting assembly 3 includes a fixing member 31 and a moving member 32 , wherein the fixing member 31 is disposed at one of the main driving mechanism 1 and the slave driving mechanism 2 , and the moving member 32 is disposed at the other of the main driving mechanism 1 and the slave driving mechanism 2 .

[0075] It is understandable that when the first connecting component 3 is in the first separated state, the movable component 32 is separated from the fixed component 31 , and when the first connecting component 3 switches from the first separated state to the first connected state, the first control component 4 connects the movable component 32 with the fixed component 31 .

[0076] It is understandable that the fixing member 31 can be arranged on the main driving mechanism 1 , and the moving member 32 can be arranged on the slave driving mechanism 2 ; the fixing member 31 can also be arranged on the slave driving mechanism 2 , and the moving member 32 can be arranged on the main driving mechanism 1 .

[0077] It can be understood that when the fixing member 31 is arranged on the slave drive mechanism 2, when the first connecting component 3 switches from the first separation state to the first connection state, the moving member 322 of the moving component 32 moves along the first direction; when the fixing member 31 is arranged on the main drive mechanism 1, when the first connecting component 3 switches from the first separation state to the first connection state, the moving member 322 of the moving component 32 moves along the second direction; wherein the first direction is the direction from the main drive mechanism 1 to the slave drive mechanism 2, that is, Figure 1 From left to right, the second direction is opposite to the first direction.

[0078] In one embodiment of the present invention, the moving component 32 includes an elastic member 321 and a moving member 322 , and the moving member 322 is connected to the main driving mechanism 1 via the elastic member 321 .

[0079] It can be understood that the moving member 322 is coaxially connected to the driving shaft 11 of the main driving mechanism 1 through the elastic member 321 , and the moving member 322 rotates coaxially with the driving shaft 11 .

[0080] It is understandable that, under the action of the elastic member 321, the moving member 322 can move axially relative to the driving shaft 11, thereby achieving connection and separation between the moving member 322 and the fixing member 31. In this embodiment, the elastic member 321 can be a spring sheet.

[0081] It can be understood that the elastic member 321 is in a normal state, the movable member 322 is separated from the fixed member 31, and the first connecting component 3 is in a first separated state; when the first connecting component 3 switches from the first separated state to the first connected state, the first control component 4 drives the movable member 322 to move toward the side close to the fixed member 31, and realizes the connection between the movable member 322 and the fixed member 31. At this time, the elastic member 321 is in a stretched state; when the first connecting component 3 switches from the first connected state to the first separated state, the first control component 4 is disconnected, and the movable member 322 moves toward the side away from the fixed member 31 under the action of the restoring force of the elastic member 321, the movable member 322 is separated from the fixed member 31, and the elastic member 321 returns to its natural state.

[0082] In a preferred embodiment of the present invention, the moving component 32 further includes a shaft disc 323 , a first end of the shaft disc 323 is coaxially connected to the output of the main driving mechanism 1 , and the elastic member 321 is disposed at a second end of the shaft disc 323 .

[0083] It is understandable that the shaft disc 323 is stepped, and its small end is coaxially connected to the driving shaft 11 . One end of the elastic member 321 is mounted on the large end of the shaft disc 323 , and the other end of the elastic member 321 is connected to the moving member 322 .

[0084] It is understandable that the end surface of the driving shaft 11 is provided with a mounting hole for mounting the small end of the shaft disc 323. The shaft disc 323 and the driving shaft 11 are threadedly connected, and the small end of the shaft disc 323 is provided with an external thread, and the mounting hole is a threaded hole that matches the external thread. In this embodiment, the small end of the shaft disc 323 is connected to the driving shaft 11 via an M4 thread.

[0085] In one embodiment of the present invention, the moving member 322 is an active friction plate, and the fixed member 31 is a driven friction plate.

[0086] It can be understood that when the first connecting component 3 is in the first separation state, there is a gap between the active friction plate and the driven friction plate; when the first connecting component 3 switches from the first separation state to the first connection state, the first control component 4 works to move the active friction plate toward the driven friction plate. At this time, the shaft disc 323 rotates and remains stationary in the axial position, the elastic member 321 is deformed, and the active friction plate fits tightly to the end face of the driven friction plate, so that the active shaft 11 drives the active friction plate to rotate, and the driven friction plate rotates synchronously with the active friction plate, and the driven friction plate drives the driven shaft 21 and the slave impeller 22 to rotate synchronously.

[0087] In another embodiment of the present invention, the moving member 322 is provided with a first positioning portion; the fixing member 31 is provided with a second positioning portion cooperating with the first positioning portion, and the second positioning portion is arranged opposite to the first positioning portion.

[0088] It can be understood that a first positioning portion is provided on the end face of the movable member 322 close to the fixed member 31, and a second positioning portion is provided on the end face of the fixed member 31 close to the movable member 322, which cooperates with the first positioning portion. When the first connecting component 3 is in the first separation state, there is a gap between the movable member 322 and the fixed member 31; when the first connecting component 3 switches from the first separation state to the first connection state, the first control component 4 works to move the movable member 322 toward the fixed member 31. At this time, the shaft disc 323 is stationary, the elastic member 321 is deformed, and the first positioning portion of the movable member 322 is clamped on the second positioning portion of the fixed member 31, so that the active shaft 11 drives the movable member 322 to rotate, the fixed member 31 rotates synchronously with the movement, and the fixed member 31 drives the driven shaft 21 and the impeller 22 to rotate synchronously.

[0089] It can be understood that the first positioning portion and the second positioning portion can be a matching recess and protrusion.

[0090] It should be noted that the first positioning portion and the second positioning portion can also adopt other positioning structures, such as positioning columns and positioning holes. Corresponding positioning holes and positioning columns are set on the movable member 322 and the fixed member 31. When the movable member 322 and the fixed member 31 are connected, the positioning columns are inserted into the positioning holes for positioning.

[0091] In another embodiment of the present invention, Figure 3 The second schematic diagram of the local structure of the first connecting component provided by the embodiment of the present invention is illustrated as follows: Figure 3 As shown, the moving component 32 includes a mounting base 33 , an elastic member 321 and a moving member 322 .

[0092] It can be understood that the mounting base 33 is connected to the main driving mechanism 1, and a first limiting portion 331 is provided at one end of the mounting base 33 away from the main driving mechanism 1; the elastic member 321 is sleeved on the mounting base 33, and the first end of the elastic member 321 abuts against the first limiting portion 331; the moving member 322 is sleeved on the elastic member 321, and an end of the moving member 322 close to the main driving mechanism 1 has a second limiting portion 3221, and the second limiting portion 3221 is used to limit the second end of the elastic member 321.

[0093] It is understandable that the elastic member 321 is limited between the first limiting portion 331 of the mounting base 33 and the second limiting portion 3221 of the moving member 322. Under the action of the elastic member 321, the moving member 322 can move axially relative to the driving shaft 11, thereby achieving the connection and separation of the moving member 322 and the fixing member 31. In this embodiment, the elastic member 321 can be a spring sheet.

[0094] It can be understood that the elastic member 321 is in a normal state, at this time, the elastic member 321 can be in a compressed state, the movable member 322 is separated from the fixed member 31, and the first connecting component 3 is in a first separated state; when the first connecting component 3 switches from the first separated state to the first connected state, the first control component 4 drives the movable member 322 to move toward the side close to the fixed member 31, and realizes the connection between the movable member 322 and the fixed member 31, at this time, the elastic member 321 is in a compressed state; when the first connecting component 3 switches from the first connected state to the first separated state, the first control component 4 is disconnected, and the movable member 322 moves toward the side away from the fixed member 31 under the action of the restoring force of the elastic member 321, the movable member 322 is separated from the fixed member 31, and the elastic member 321 returns to a normal state.

[0095] In another embodiment of the present invention, a gasket is provided on the side of the moving member 322 facing the main driving mechanism 1 .

[0096] It is understandable that when the driving shaft 11 rotates, a pulling force is generated on the fixed member 31. In this embodiment, a gasket is provided on the side of the moving member 322 facing the main driving mechanism 1 to prevent the moving member 322 from directly contacting the driving shaft 11 or the housing, thereby reducing the wear on the driving shaft 11 or the housing. In this embodiment, the gasket is a polytetrafluoroethylene gasket.

[0097] In another embodiment of the present invention, a limiting structure is provided on the driving shaft 11 or the housing, for limiting the mounting base 33 when the elastic member 321 is in a normal state.

[0098] In one embodiment of the present invention, the first control component 4 includes a matching iron core 41 and a coil 42 , and the first control component 4 is energized to achieve movement of the moving part 322 toward the side of the fixed part 31 .

[0099] It can be understood that after the coil 42 is energized, the iron core 41 generates a magnetic force to pull the movable part 322 toward the side of the fixed part 31, so that the movable part 322 and the end surface of the fixed part 31 are tightly fitted, thereby realizing the connection between the movable part 322 and the fixed part 31; when the coil 42 is de-energized, the movable part 322 moves to the side away from the fixed part 31 under the action of the elastic part 321, so that the movable part 322 is separated from the fixed part 31.

[0100] In this embodiment, the driving shaft includes two sections, one section is the driving shaft 11, and the other section is the driven shaft 21. The driving shaft 11 is connected to the driving member 5 and the main impeller 12, and the driven shaft 21 is connected to the secondary impeller 22. A first control component 4 is designed at the disconnection point between the driving shaft 11 and the driven shaft 21. The first control component 4 can adopt an electromagnetic clutch. When the electromagnetic clutch is energized, the driving shaft 11 and the driven shaft 21 are coaxially connected; when the electromagnetic clutch is disconnected, the driving shaft 11 and the driven shaft 21 are separated.

[0101] In another embodiment of the present invention, a second connecting component is arranged between the impeller component and the driving shaft 11, and the second connecting component is used to switch between a second connected state and a second separated state. In the second connected state, the impeller component is connected to the driving shaft 11 through the second connecting component, and in the second separated state, the impeller component is separated from the driving shaft 11.

[0102] It is understandable that the impeller component further includes a connecting shaft (the connecting shaft is not shown in the figure), the connecting shaft is relatively arranged at one end of the driving shaft 11, and the driven shaft 21 is relatively arranged at the other end of the driving shaft 11.

[0103] It can be understood that the second connecting component is arranged between the connecting shaft and the driving shaft 11, and the second connecting component switches between a second connected state and a second separated state. In the second connected state, the connecting shaft is connected to the driving shaft 11, and the driving shaft 11 can drive the impeller 22 to rotate; in the second separated state, the impeller component is separated from the driving shaft 11.

[0104] It should be noted that one end of the driving shaft 11 is connected to the main impeller 12 through the first connecting component 3, and the other end of the driving shaft 11 is connected to the slave impeller 22 through the second connecting component. The state of the first connecting component 3 and the second connecting component can be switched according to working needs (working needs of the main impeller 12 and the slave impeller 22), specifically including:

[0105] When both the main impeller 12 and the secondary impeller 22 are required to work, the first connecting component 3 and the second connecting component are both in a connected state.

[0106] When the main impeller 12 is required to work and the secondary impeller 22 is not required to work, the second connecting component is in a connected state and the first connecting component 3 is in a separated state.

[0107] When the main impeller 12 is not required to work and the slave impeller 22 is required to work, the second connecting component is in a separated state and the first connecting component is in a connected state.

[0108] It should be noted that the second connection component can adopt the structure of the first connection component 3 in any of the above embodiments, which will not be described in detail in this embodiment.

[0109] It should be noted that the second control component can adopt the structure of the first control component 4 of any of the above-mentioned embodiments, which will not be repeated in this embodiment. For example, the second control component adopts an electromagnetic clutch. When the electromagnetic clutch is energized, the driving shaft 11 and the connecting shaft are coaxially connected; when the electromagnetic clutch is disconnected, the driving shaft 11 and the connecting shaft are separated.

[0110] In one embodiment of the present invention, the water pump includes a shell, which includes a first shell 61, a second shell 62 and a third shell 63 connected in sequence, the second shell 62 has an installation space, a first water chamber is formed between the first end faces of the first shell 61 and the second shell 62, and an installation chamber is formed between the second end faces of the third shell 63 and the second shell 62. In fact, the first end face of the second shell 62 and the second end face of the second shell 62 are arranged opposite to each other.

[0111] Among them, the driving member 5 is arranged in the installation space, the middle part of the driving shaft 11 is coaxially passed through the driving member 5, the two ends of the driving shaft 11 are rotatably arranged on the second shell 62, and the first end of the driving shaft 11 passes through the second shell 62 and is connected to the main impeller 12, the moving component 32 and the slave drive mechanism 2 are located in the installation room, and the moving component 32 is connected to the second end of the driving shaft 11.

[0112] Among them, the third shell 63 is connected to the second shell 62 through the isolation shell 64, an installation cavity is formed between the isolation shell 64 and the second end face of the second shell 62, a second water chamber is formed between the isolation shell 64 and the third shell 63, the first control component 4 and the first connecting component 3 are arranged in the installation cavity, and the drive mechanism 2 is arranged in the second water chamber.

[0113] It can be understood that the moving member 322, the fixed member 31, and the iron core 41 are sequentially arranged along the first direction, the moving member 322 is connected to the second end of the driving shaft 11 through the elastic member 321 and the shaft disc 323, the fixed member 31 and the moving member 322 are coaxially arranged and spaced, and the fixed member 31 is coaxially connected to the driven member, and the iron core 41 and the coil 42 are fixed to the isolation housing 64. In this embodiment, the coil 42 and the iron core 41 can be integrally molded with the isolation housing 64.

[0114] According to the embodiment of the present invention, a connecting portion is provided in the middle of one end of the fixed member 31 away from the moving member 322 , and the connecting portion and the driven member are connected by M4 thread. The connecting position of the connecting portion and the driven member can be supported on the isolation housing 64 .

[0115] In one embodiment of the present invention, the main impeller 12, the driving shaft 11, the driving member 5 and the shaft disk 323 are rigidly connected to each other, the fixing member 31, the driven shaft 21 and the impeller 22 are rigidly connected to each other, and a second gap is maintained between the end surface of the fixing member 31 close to the iron core 41 and the iron core 41. In this embodiment, the second gap is about 0.3 mm.

[0116] It is understandable that a suitable gap is maintained between the fixed part 31 and the iron core 41. After the coil 42 is energized, the iron core 41 generates a magnetic force sufficient to pull the movable part 322, so that the movable part 322 fits tightly with the end face of the fixed part 31, thereby realizing the connection between the movable part 322 and the fixed part 31.

[0117] It should be noted that if the gap between the fixed part 31 and the iron core 41 is too large, the magnetic force generated by the iron core 41 is insufficient to make the movable part 322 fit tightly with the end face of the fixed part 31, thereby realizing the connection between the movable part 322 and the fixed part 31; if the gap between the fixed part 31 and the iron core 41 is too small, when the fixed part 31 rotates synchronously with the movable part 322, the fixed part 31 will come into contact with the iron core 41, thereby causing damage to the iron core 41.

[0118] The working process of the water pump in this embodiment includes:

[0119] When the first side of the water pump has a working demand, the water pump is powered, the driving member 5 works, and the driving member 5 drives the driving shaft 11 and the main impeller 12 arranged on the driving shaft 11 to rotate, and the working speed of the main impeller 12 can be controlled as needed.

[0120] It should be noted that the first connecting component 3 is normally in the first separation state. In the first separation state, the movable member 322 and the fixed member 31 have a first gap, and the first gap is less than or equal to 0.5 mm. The gap between the movable member 322 and the fixed member 31 under normal conditions is generally controlled within 0.5 mm.

[0121] When the second side of the water pump needs to work, the coil 42 of the electromagnetic clutch is energized, and the iron core 41 generates magnetic force to pull the active end friction plate to the right and press it tightly against the driven end friction plate, thereby realizing the connection between the active shaft 11 and the driven shaft 21. The driven impeller 22 on the right side of the driven shaft 21 rotates with the driven shaft 21.

[0122] The first side of the water pump is the main driving mechanism 1 side, and the second side of the water pump is the slave driving member 5 side.

[0123] It can be understood that, in the first separation state, the moving member 322 maintains a first gap with the fixing member 31 under the action of the working fluid on the main driving mechanism 1 side.

[0124] When there is no working demand on the second side of the water pump, the coil 42 of the electromagnetic clutch is powered off, the magnetic force of the iron core 41 disappears, and the main friction plate moves to the left due to the restoring force of the elastic member 321, so that the main friction plate and the driven friction plate are separated. At this time, the main impeller 12 on the left is still in the working state. When the main impeller 12 is working, the fluid acts on the main impeller 12 to have a pulling force to the left, so that the main and driven friction plates and the driven friction plates are controlled in a suitable gap (first gap) to prevent contact and wear.

[0125] In the water pump provided by the embodiment of the present invention, the operation of the main impeller 12 and the secondary impeller 22 are controllable, which reduces the energy consumption of the product, makes the control more flexible, and enhances the applicability.

[0126] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water pump, It is characterized in that include: Main driving mechanism (1); A slave driving mechanism (2), wherein the main driving mechanism (1) and the slave driving mechanism (2) are arranged opposite to each other; a first connecting component (3) for switching between a first connected state and a first separated state, wherein in the first connected state, the slave drive mechanism (2) is connected to the master drive mechanism (1) via the first connecting component (3), and in the first separated state, the slave drive mechanism (2) is separated from the master drive mechanism (1); A first control component (4), wherein the first control component (4) is used to switch the first connecting component (3) from a first separated state to a first connected state.

2. The water pump according to claim 1, It is characterized in that The first connection component (3) comprises: A fixing member (31) is arranged on one of the main driving mechanism (1) and the slave driving mechanism (2); A moving component (32) is arranged on the other one of the main driving mechanism (1) and the slave driving mechanism (2); In the first connection state, the moving component (32) is connected to the fixing component (31), and in the first separation state, the moving component (32) is separated from the fixing component (31).

3. The water pump according to claim 2, It is characterized in that The moving part (32) comprises: A mounting base (33) connected to the main driving mechanism (1), wherein a first limiting portion (331) is provided at one end of the mounting base (33) away from the main driving mechanism (1); An elastic member (321) is sleeved on the mounting base (33), and a first end of the elastic member (321) abuts against the first limiting portion (331); A moving member (322) is sleeved on the elastic member (321), and one end of the moving member (322) close to the main driving mechanism (1) has a second limiting portion (3321), and the second limiting portion (3321) is used for limiting the second end of the elastic member (321); In the first connection state, the movable member (322) is connected to the fixed member (31), and the elastic member (321) is in a compressed state; in the first separation state, the movable member (322) is separated from the fixed member (31), and the elastic member (321) is in a normal state.

4. The water pump according to claim 3, It is characterized in that A gasket is provided on the side of the moving member (322) facing the main driving mechanism (1).

5. The water pump according to claim 2, It is characterized in that The moving part (32) comprises: An elastic member (321); A moving member (322), wherein the moving member (322) is connected to the main driving mechanism (1) via the elastic member (321); In the first connection state, the movable member (322) is connected to the fixed member (31), and the elastic member (321) is in a stretched state; in the first separation state, the movable member (322) is separated from the fixed member (31), and the elastic member (321) is in a normal state.

6. The water pump according to claim 5, It is characterized in that The moving part (32) further comprises: A shaft disc (323), wherein a first end of the shaft disc (323) is coaxially connected to an output of the main driving mechanism (1), and the elastic member (321) is arranged at a second end of the shaft disc (323).

7. The water pump according to any one of claims 3 to 6, It is characterized in that The moving part (322) is an active friction plate; The fixing member (31) is a driven friction plate.

8. The water pump according to any one of claims 3 to 6, It is characterized in that The first control component (4) comprises: Iron core (41); A coil (42) is arranged on the iron core (41); In the first connection state, the magnetic force of the iron core (41) causes the movable member (322) to abut against the fixed member (31); in the first separation state, the movable member (322) is separated from the fixed member (31).

9. The water pump according to any one of claims 3 to 6, It is characterized in that In the first separation state, the moving member (322) maintains a first gap with the fixed member (31) under the action of the working fluid on the main drive mechanism (1) side.

10. The water pump according to any one of claims 1 to 6, It is characterized in that The main driving mechanism (1) comprises: A driving member (5); A driving shaft (11) connected to the driving member (5); An impeller component, the impeller component being arranged opposite to the driving shaft (11); a second connection component, used for switching between a second connection state and a second separation state, wherein in the second connection state, the impeller component is connected to the driving shaft (11) via the second connection component, and in the second separation state, the impeller component is separated from the driving shaft (11); The second control component is used to switch the second connection component from a second separation state to a second connection state.

Images