A flexible adjustable variable flow water pump

Abstract

The present invention provides a variable-flow water pump with flexible adjustment, which includes a pump body. A drive shaft is rotatably connected through the interior of the pump body, and both ends of the drive shaft extend to the outside of the pump body. One end of the drive shaft is fixedly connected with an impeller. A sliding ring is slidably connected inside one end of the pump body close to the impeller, and a working housing corresponding to the impeller is fixedly connected to one side of the pump body close to the impeller. In the present invention, a vacuum drive assembly is provided to drive the sliding ring to sleeved outside the impeller, so as to change the flow rate at the impeller outlet, realize the variable-flow function of the water pump, effectively improve the cold start and warm-up efficiency of the engine, enhance the product quality reliability, and improve the practicability of the mechanical water pump. By providing a dual detection mechanism and an airbag, not only timely detection can be carried out, but also when the vacuum drive assembly is damaged, the airbag can drive the sliding ring to move normally through its operation, so that the water pump can continue to realize changing the size of the output working chamber of the coolant.

Description

Technical Field

[0001] The present invention relates to the technical field of water pump structures, and particularly to a variable flow water pump with flexible adjustment. Background Art

[0002] In an automobile, the engine cooling water circulation system is one of the very important systems. It can prevent the engine from overheating and maintain a stable temperature. The main function of the engine cooling system is to timely dissipate part of the heat absorbed by the heated parts, ensuring that the engine works under the most suitable temperature condition. In addition, it also undertakes the task of providing warm air for the interior space of the vehicle. The engine cooling system is divided into water-cooled and air-cooled types. A water-cooled automobile dissipates heat through the antifreeze circulating in the engine pipeline. When the antifreeze flows through the high-temperature engine, it absorbs heat, thereby reducing the temperature of the engine; when the antifreeze flows to the radiator, it then dissipates the heat into the air. In the air-cooled system, there is no antifreeze circulation, but a powerful fan is used to blow air onto the aluminum fins attached to the engine for heat dissipation, thereby achieving the purpose of cooling the engine.

[0003] In the water-cooled circulation system of an automobile engine, a water pump is required to drive the coolant to circulate. The water pumps in the existing water-cooled circulation systems of automobile engines widely adopt traditional general mechanical water pumps. The structure of the traditional mechanical water pump is relatively fixed, and the flow rate at the impeller outlet is fixed and cannot be changed. As a result, when the engine is cold-started, the warm-up time is too long, thus affecting the working efficiency of the engine. Summary of the Invention

[0004] (1) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the present invention provides a variable flow water pump with flexible adjustment to solve the problems that the structure of the traditional mechanical water pump is relatively fixed, the flow rate at the impeller outlet is fixed and cannot be changed, resulting in too long warm-up time when the engine is cold-started, thus affecting the working efficiency of the engine. By adopting a variable flow structure, the warm-up efficiency of the engine during cold start can be effectively improved, and the product quality reliability can be improved to solve the deficiencies of the prior art.

[0006] (2) Technical Solutions

[0007] To achieve the above object, the present invention is realized by the following technical solutions: A variable-flow water pump with flexible adjustment, including a pump body, a drive shaft is rotatably connected through the inside of the pump body, both ends of the drive shaft extend to the outside of the pump body, one end of the drive shaft is fixedly connected with an impeller, a sliding ring is slidably connected inside one end of the pump body close to the impeller, a working housing corresponding to the impeller is fixedly connected to one side of the pump body close to the impeller, an installation groove is opened on the outer surface of the pump body and away from the impeller, a vacuum drive assembly is fixedly installed inside the installation groove, a plurality of automatic reset conduction assemblies are sequentially slidably connected through the inside of the installation groove, both ends of the automatic reset conduction assembly are respectively fixedly connected with the sliding ring and the movable end of the vacuum drive assembly, a cover plate is fixedly installed inside the installation groove in an embedded manner, an airbag is fixedly connected to one side of the outer surface of the cover plate corresponding to the installation groove, one side of the outer surface of the airbag is in contact with the outer surface of the vacuum drive assembly, a dual detection device is fixedly installed inside the installation groove, and the dual detection device cooperates with the automatic reset conduction assembly.

[0008] Preferably, the vacuum drive assembly includes a flexible drive member fixedly installed in the installation groove in a sealed and embedded manner, a spring base is attached to one side of the outer surface of the flexible drive member, a groove is opened on the outer surface of the flexible drive member, and the spring base is located inside the groove, a ring-shaped positioning ring is fixedly connected to one side of the outer surface of the flexible drive member, a ring-shaped positioning groove matching the ring-shaped positioning ring is opened on the outer surface of the pump body, and the outer surface of the spring base is slidably connected to the inner wall of the installation groove. The vacuum drive assembly further includes an air extraction hole fixedly opened on one side of the outer surface of the pump body, both ends of the air extraction hole are respectively communicated with the outside of the pump body and the inside of the installation groove, one end of the air extraction hole is fixedly connected with an air extraction pipe, and one end of the air extraction pipe is fixedly connected with a first connector.

[0009] Preferably, the shapes of the installation groove, the spring base, the flexible drive member and the cover plate are all ring-shaped, the cross-section of the flexible drive member is W-shaped, the spring base is arranged inside the flexible drive member, the cover plate is fixedly connected to the outer surface of the pump body by bolts, and a ring-shaped counterbore groove matching the cover plate is opened on the outer surface of the pump body.

[0010] Preferably, the automatic reset conduction assembly includes a plurality of guide posts, the plurality of guide posts penetrate through the installation groove in a circular array, and both ends of the guide posts are respectively fixedly connected with the outer surface of the sliding ring and one side of the spring base, a seal is fixedly sleeved on the outer surface of the guide posts, the automatic reset conduction assembly further includes a return spring, the return spring is sleeved on the outside of the guide posts, both ends of the return spring are respectively in contact with the outer surface of the installation groove and one side of the spring base, a plurality of guide columns are fixedly connected to the outer surface of the spring base in a circular array, and one end of the return spring is sleeved on the outside of the guide columns.

[0011] Preferably, a plurality of spring guide grooves are annularly arranged on one side of the inner wall of the installation groove, one end of the return spring extends into the spring guide groove, and one end of the return spring is slidably connected to the inner wall of the spring guide groove.

[0012] Preferably, a flange is fixedly sleeved on the outer surface of the end of the drive shaft away from the impeller, and the flange is fixedly connected to the drive shaft by bolts. A plurality of first mounting holes are sequentially arranged in an annular array on the outer surface of the flange, and a plurality of second mounting holes are sequentially arranged on the outer surface of the pump body. Internal threads are provided on the inner walls of the first mounting hole and the second mounting hole.

[0013] Preferably, a storage groove matching with the sliding ring is provided inside the pump body. The diameter of the sliding ring is smaller than the diameter of the working housing, and the outer surface of the sliding ring is slidably connected to the inner wall of the storage groove. The shapes of the pump body and the sliding ring are both annular housing shapes.

[0014] Preferably, a water seal is sleeved and rotatably connected to the outer surface of the drive shaft, and the water seal is fixedly installed inside the pump body. A plurality of third mounting holes are annularly arranged on the inner wall of the storage groove, and a plurality of the seals are sequentially and slidably connected inside the corresponding third mounting holes.

[0015] Preferably, the double detection mechanism includes a pressure sensor fixedly installed through one side of the outer surface of the pump body. The detection end of the pressure sensor penetrates through the pump body and extends into the installation groove. The double detection mechanism further includes a plurality of pressure sensors, and the plurality of pressure sensors are respectively embedded and fixedly installed inside the spring guide groove. One end of the return spring is in contact with the outer surface of the pressure sensor. A controller and an alarm are sequentially fixedly installed on one side of the outer surface of the pump body, and the pressure sensor, the pressure sensor and the alarm are all electrically connected to the controller through wires. The sensor is electrically connected to a display screen through a wire.

[0016] Preferably, an air inlet pipe is fixedly connected through one side of the outer surface of the airbag. One end of the air inlet pipe penetrates through the cover plate and extends to the outside. A second connector is fixedly connected to the end of the air inlet pipe located outside the cover plate. An exhaust pipe is fixedly connected through one side of the outer surface of the airbag. One end of the exhaust pipe penetrates through the cover plate and extends to the outside. An electromagnetic pressure relief valve is fixedly connected to one side of the exhaust pipe located outside the cover plate, and the electromagnetic pressure relief valve is electrically connected to the controller through a wire.

[0017] Working principle: Connect the drive shaft to the external drive mechanism through the first mounting holes on the flange, and then drive the impeller to work through the drive shaft. The coolant is stably output in the working chamber formed by the impeller and the inner wall of the working side of the water pump. When variable flow output is required, connect the suction pipe to the external vacuum pump through the first connector, and then extract the air inside the mounting groove through the suction pipe and the suction holes. At this time, a negative pressure is formed inside the mounting groove. Under the action of the negative pressure, the flexible drive member will deform towards the inside of the mounting groove, thereby starting to squeeze the spring base and driving the spring base to move along the inside of the mounting groove. Through multiple guide posts arranged in a circular array, uniform pressure can be applied to the sliding ring, which can avoid blockage and wear caused by uneven stress, thereby increasing the service life. Furthermore, it drives the sliding ring to slide, so that it gradually sleeves outside the impeller, thus forming a new working chamber between the impeller and the inner wall of the sliding ring, thereby changing the size of the output working chamber of the coolant to achieve variable flow output. And during the movement of the spring base, the return spring is compressed. When variable flow output is not required, turn off the external vacuum pump. At this time, the elastic force stored in the return spring itself can automatically drive the spring base and the guide posts to move in the reverse direction for reset, and then automatically drive the sliding ring to reset and be stored, which is convenient for reuse next time and avoids affecting the normal use of the water pump, so that the volume of the working chamber of the impeller returns to the original volume of the working chamber formed between the working housing. And when the external vacuum pump is started, a negative pressure is generated inside the mounting groove. Through the set air pressure sensor, the change in the air pressure inside the current mounting groove can be sensed, so as to make a preliminary judgment on the sealing performance of the vacuum drive assembly. And when the flexible drive member drives the spring base to move under the action of the negative pressure, at this time the return spring is compressed. Through the set pressure sensor, the compression amount of the current return spring can be known, so as to know the moving distance of the sliding ring. And through the set air pressure sensor and pressure sensor, the normal operation of the vacuum drive assembly can be detected respectively, so as to understand the occurrence of faults. And when a fault occurs in the sealing performance or the automatic reset conduction assembly of the vacuum drive assembly, the air pressure sensor or the pressure sensor will directly transmit a signal to the controller. At this time, the controller will control the alarm to operate, thereby emitting a corresponding alarm, which is convenient for discovering problems with the vacuum drive assembly of the water pump. And the air pressure sensor and the pressure sensor are electrically connected to a display screen through wires. Through the set display screen, the air pressure inside the mounting groove and the elastic force of each return spring can be displayed respectively, so as to know the data of the air pressure sensor and each pressure sensor, which is convenient for understanding the situation of the vacuum drive assembly and the automatic reset conduction assembly;And during use, the airbag is connected to an external air pump through an air inlet pipe. When the vacuum drive assembly is damaged, the air pump is started at this time. The air pump can directly inflate the airbag through the air inlet pipe, so that the airbag bulges. Then, the flexible drive member can directly apply pressure to the spring base, and then drive the guide post and the sliding ring to move, eject the sliding ring from the storage groove, and then can realize the change of the volume of the impeller working chamber again. Thus, when the vacuum drive assembly is damaged, the sliding ring can still move normally, so that the water pump can continue to change the size of the output working chamber of the coolant, and then can realize the variable flow output of the coolant, without the need to stop for maintenance, thereby improving work efficiency. After use, opening the set electromagnetic pressure relief valve can relieve the pressure of the airbag through the exhaust pipe, so that the sliding ring is automatically driven to reset and be stored under the action of the return spring.

[0018] (III) Advantageous Effects

[0019] The present invention provides a flexible adjustable variable flow water pump, which has the following advantageous effects:

[0020] The flexible adjustable variable flow water pump of the present invention has a compact structure and is convenient to use. By setting the vacuum drive assembly to drive the sliding ring to be sleeved outside the impeller, the flow rate at the impeller outlet can be changed, and the variable flow function of the water pump can be realized, which can effectively improve the cold start and warm-up efficiency of the engine, enhance the product quality reliability, improve the practicability of the mechanical water pump, and through the double detection mechanism and the airbag set, not only can the vacuum drive assembly and the automatic reset conduction assembly be detected in real time, and an alarm can be given in time when the vacuum drive assembly and the automatic reset conduction assembly are damaged, so as to facilitate timely maintenance, but also when the vacuum drive assembly is damaged, the sliding ring can move normally again through the operation of the airbag, so that the water pump can continue to change the size of the output working chamber of the coolant, and then can realize the variable flow output of the coolant, thereby improving the practicability of the water pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is an exploded view of the present invention;

[0022] Figure 2 is a schematic diagram of the overall structure of the present invention;

[0023] Figure 3 is a schematic diagram of a partial structure of the present invention;

[0024] Figure 4 is a three-dimensional view of the flexible drive member of the present invention;

[0025] Figure 5 is a three-dimensional view of the spring base of the present invention.

[0026] Among them, 1. Flange; 2. Cover plate; 3. Flexible drive member; 4. Spring base; 5. Drive shaft; 6. Return spring; 7. Pump body; 8. Water seal; 9. Sliding ring; 10. Impeller; 11. Guide post; 12. Guide column; 13. Installation groove; 14. Seal; 15. Working housing; 16. Air extraction hole; 17. Air extraction pipe; 18. Air pressure sensor; 19. Pressure sensor; 20. Airbag; 21. Groove; 22. Annular positioning ring. Specific implementation mode

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Embodiment:

[0029] As Figures 1-3 shown, the embodiment of the present invention provides a variable flow pump with flexible adjustment, including a pump body 7. A drive shaft 5 is rotatably connected through the inside of the pump body 7, and both ends of the drive shaft 5 extend to the outside of the pump body 7. One end of the drive shaft 5 is fixedly connected with an impeller 10. A sliding ring 9 is slidably connected inside one end of the pump body 7 close to the impeller 10. A working housing 15 corresponding to the impeller 10 is fixedly connected to one side of the pump body 7 close to the impeller 10. An installation groove 13 is opened on the outer surface of the pump body 7 and away from the impeller 10. A vacuum drive assembly is fixedly installed inside the installation groove 13. A plurality of automatic reset conduction assemblies are sequentially slidably connected through the inside of the installation groove 13. Both ends of the automatic reset conduction assembly are fixedly connected with the sliding ring 9 and the movable end of the vacuum drive assembly respectively. A cover plate 2 is fixedly installed inside the installation groove 13 in an embedded manner. An airbag 20 is fixedly connected to one side of the outer surface of the cover plate 2 corresponding to the installation groove 13. One side of the outer surface of the airbag 20 is in contact with the outer surface of the vacuum drive assembly. A dual detection device is fixedly installed inside the installation groove 13, and the dual detection device cooperates with the automatic reset conduction assembly.

[0030] The vacuum drive assembly includes a flexible drive member 3 that is hermetically embedded and fixedly installed inside the installation groove 13. On one side of the outer surface of the flexible drive member 3, there is a spring base 4 attached. A groove 21 is formed on the outer surface of the flexible drive member 3, and the spring base 4 is located inside the groove 21. On one side of the outer surface of the flexible drive member 3, there is a fixedly connected annular positioning ring 22. An annular positioning groove that matches the annular positioning ring 22 is formed on the outer surface of the pump body 7. The outer surface of the spring base 4 is slidably connected to the inner wall of the installation groove 13. The vacuum drive assembly further includes an air extraction hole 16 fixedly formed on one side of the outer surface of the pump body 7. Both ends of the air extraction hole 16 are respectively communicated with the outside of the pump body 7 and the inside of the installation groove 13. One end of the air extraction hole 16 is fixedly connected to an air extraction pipe 17. One end of the air extraction pipe 17 is fixedly connected to a first connector. The air extraction pipe 17 is connected to an external vacuum machine through the first connector. Then, the air inside the installation groove 13 is extracted through the air extraction pipe 17 and the air extraction hole 16. At this time, a negative pressure is formed inside the installation groove 13. Under the action of the negative pressure, the flexible drive member 3 will deform towards the inside of the installation groove 13, thereby starting to squeeze the spring base 4 and driving the spring base 4 to move along the inside of the installation groove 13.

[0031] The shapes of the installation groove 13, the spring base 4, the flexible drive member 3, and the cover plate 2 are all annular. The cross-section of the flexible drive member 3 is in a W shape. The spring base 4 is arranged inside the flexible drive member 3. The cover plate 2 is fixedly connected to the outer surface of the pump body 7 through bolts. An annular countersunk head groove that matches the cover plate 2 is formed on the outer surface of the pump body 7. The cover plate 2 presses and installs the two edge surfaces of the cross-section of the flexible drive member 3 at the other end of the pump body 7. That is, when the two edge surfaces of the cross-section of the flexible drive member 3 are in a pressed state, a sealed space can be formed inside the installation groove 13 to avoid air leakage. The shapes of the installation groove 13, the spring base 4, the flexible drive member 3, and the cover plate 2 being all annular facilitate the assembly of the vacuum drive assembly and can be driven synchronously without the need for separate driving, thus being more convenient to use. The cover plate 2 being fixedly connected to the outer surface of the pump body 7 through bolts facilitates the installation and disassembly of the cover plate 2. By setting the annular countersunk head groove, the cover plate 2 can be embedded and installed, so that one side of the pump body 7 can be kept flat, making the pump body 7 more beautiful and convenient to use.

[0032] The automatic reset conduction component includes a plurality of guide posts 12. The plurality of guide posts 12 are installed through the installation groove 13 in a circular array. The two ends of the guide posts 12 are respectively fixedly connected to the outer surface of the sliding ring 9 and one side of the spring base 4. A seal 14 is fixedly sleeved on the outer surface of the guide posts 12. The automatic reset conduction component further includes a reset spring 6. The reset spring 6 is sleeved on the outside of the guide posts 12. The two ends of the reset spring 6 are respectively in contact with the installation groove 13 and one side of the outer surface of the spring base 4. A plurality of guide posts 11 are fixedly connected to the outer surface of the spring base 4 in a circular array. One end of the reset spring 6 is sleeved on the outside of the guide posts 11. By arranging a plurality of guide posts 12 in a circular array, pressure can be evenly applied to the sliding ring 9, thereby avoiding blockage and wear caused by uneven stress, and further improving the service life. When in contact in a vacuum state, the elastic force stored in the reset spring 6 itself can automatically drive the spring base 4 and the guide posts 12 to move in the reverse direction for reset, facilitating reuse next time and avoiding affecting the normal use of the water pump. By providing the seal 14, the connection between the guide posts 12 and the pump body 7 can be sealed, thus preventing leakage in the installation groove 13 and affecting the normal operation of the vacuum drive component. The plurality of guide posts 11 arranged in a circular array can guide and limit one end of the reset spring 6, thereby preventing the reset spring 6 from bending and displacing when compressed.

[0033] On one side of the inner wall of the installation groove 13, a plurality of spring guide grooves are provided in a circular array. One end of the reset spring 6 extends into the spring guide grooves. One end of the reset spring 6 is slidably connected to the inner wall of the spring guide grooves. Placing the other end of the reset spring 6 in the spring guide grooves can limit and support the other end of the reset spring 6, and at the same time can also guide the other end of the reset spring 6, thereby preventing the reset spring 6 from bending and displacing, and thus cooperating with the guide posts 11 to enable the normal use and operation of the reset spring 6.

[0034] A flange 1 is fixedly sleeved on the outer surface of the end of the drive shaft 5 away from the impeller 10. The flange 1 is fixedly connected to the drive shaft 5 by bolts. A plurality of first mounting holes are sequentially provided in a circular array on the outer surface of the flange 1. A plurality of second mounting holes are sequentially provided on the outer surface of the pump body 7. Internal threads are provided on the inner walls of the first mounting holes and the second mounting holes. The first mounting holes on the first flange 1 are convenient for connecting with an external drive mechanism, thereby facilitating driving the drive shaft 5 to rotate, and further driving the impeller 10 connected to the drive shaft 5 to rotate. The second mounting holes on the pump body 7 are convenient for connecting with an external housing and mounting structure, thus facilitating the overall installation and fixation of the water pump. Internal threads are provided in the first mounting holes and the second mounting holes, facilitating threaded connection with corresponding bolts, thereby facilitating fixation and disassembly.

[0035] The interior of the pump body 7 is provided with a storage groove that cooperates with the sliding ring 9. The diameter of the sliding ring 9 is smaller than the diameter of the working housing 15, and the outer surface of the sliding ring 9 is slidably connected to the inner wall of the storage groove. The shapes of both the pump body 7 and the sliding ring 9 are in the shape of an annular housing. The storage groove facilitates the storage and placement of the sliding ring 9, making it convenient to store the sliding ring 9 when it is not in use. Since the diameter of the sliding ring 9 is smaller than the diameter of the working housing 15, when using the working housing 15 and the sliding ring 9 separately, a working chamber with different volumes can be generated for the impeller 10, thereby changing the size of the working chamber for the output of the coolant. Furthermore, variable flow output of the coolant can be achieved, effectively improving the cold start and warm-up efficiency of the engine, enhancing the product quality and reliability, and increasing the practicality of the mechanical water pump. Also, the shapes of both the pump body 7 and the sliding ring 9 being in the shape of an annular housing facilitate the formation of working chambers with different volumes required by the impeller 10.

[0036] A water seal 8 is sleeved and rotatably connected to the outer surface of the drive shaft 5, and the water seal 8 is fixedly installed inside the pump body 7. A plurality of third mounting holes are annularly arrayed on the inner wall of the storage groove, and a plurality of seals 14 are sequentially and slidably connected inside the corresponding third mounting holes. The water seal 8 is sleeved on the drive shaft 5 and connected to the inner wall of the pump body 7, which can provide water sealing at the connection position between the pump body 7 and the drive shaft 5. Thus, the interior of the pump body 7 can be divided into two parts, further preventing water from leaking between the drive shaft 5 and the pump body 7, thereby improving the sealing performance between the drive shaft 5 and the pump body 7. The third mounting holes facilitate the storage of the seals 14 and also facilitate sealing.

[0037] The double detection mechanism includes a pneumatic pressure sensor 18 fixedly installed through one side of the outer surface of the pump body 7. The detection end of the pneumatic pressure sensor 18 penetrates the pump body 7 and extends into the interior of the installation groove 13. The double detection mechanism also includes a plurality of pressure sensors 19, which are respectively embedded and fixedly installed inside the spring guide groove. One end of the return spring 6 is in contact with the outer surface of the pressure sensor 19. A controller and an alarm are sequentially fixedly installed on one side of the outer surface of the pump body 7. The pneumatic pressure sensor 18, the pressure sensor 19, and the alarm are all electrically connected to the controller through wires. The sensor is electrically connected to a display screen through a wire. When the external vacuum pump is started, a negative pressure is generated inside the installation groove 13. By setting the pneumatic pressure sensor 18, the change in the air pressure inside the current installation groove 13 can be sensed, so as to make a preliminary judgment. When the flexible driving member 3 drives the spring base 4 to move under the action of the negative pressure, at this time, the return spring 6 is compressed. By setting the pressure sensor 19, the compression amount of the current return spring 6 can be known, so as to know the moving distance of the sliding ring 9. And by setting the pneumatic pressure sensor 18 and the pressure sensor 19, the normal operation of the vacuum driving assembly can be detected respectively, so as to reduce the occurrence of faults. And when a fault occurs, the pneumatic pressure sensor 18 or the pressure sensor 19 will directly transmit a signal to the controller. At this time, the controller will control the alarm to operate, so as to issue a corresponding alarm, thus facilitating the discovery of problems with the vacuum driving assembly of the water pump. And the sensor is electrically connected to a display screen through a wire. By setting the display screen, the air pressure inside the installation groove 13 and the elastic force of each return spring 6 can be displayed respectively, so as to know the data of the pneumatic pressure sensor 18 and each pressure sensor 19, thus facilitating the understanding of the situation of the vacuum driving assembly and the automatic reset conduction assembly.

[0038] One side of the outer surface of the airbag 20 is fixedly connected through and penetrated with an air inlet pipe. One end of the air inlet pipe penetrates the cover plate 2 and extends to the outside. One end of the air inlet pipe located outside the cover plate 2 is fixedly connected with a second connector. One side of the outer surface of the airbag 20 is fixedly connected through and penetrated with an exhaust pipe. One end of the exhaust pipe penetrates the cover plate 2 and extends to the outside. One side of the exhaust pipe located outside the cover plate 2 is fixedly connected with an electromagnetic pressure relief valve, and the electromagnetic pressure relief valve is electrically connected to the controller through a wire. By connecting the airbag 20 with an external air pump through the air inlet pipe, the airbag 20 can be directly inflated, so that the airbag 20 bulges. Then, pressure can be directly applied to the spring base 4 through the flexible driving member 3, and then the guide post 12 and the sliding ring 9 can be driven to move, so as to realize that the sliding ring 9 can still move normally when the vacuum driving assembly is damaged, so that the water pump can continue to realize changing the size of the output working chamber of the coolant, and then the variable flow output of the coolant can be realized. Opening the set electromagnetic pressure relief valve can relieve the pressure of the airbag 20 through the exhaust pipe, so that the sliding ring 9 is automatically driven to reset and retract under the action of the return spring 6.

[0039] It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a reference structure" does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flexible adjustable variable flow water pump, comprising a pump body (7), characterized in that: A drive shaft (5) is rotatably connected through the interior of the pump body (7), and both ends of the drive shaft (5) extend to the outside of the pump body (7). One end of the drive shaft (5) is fixedly connected to an impeller (10). A sliding ring (9) is slidably connected to the interior of one end of the pump body (7) near the impeller (10). A working housing (15) corresponding to the impeller (10) is fixedly connected to one side of the pump body (7) near the impeller (10). An installation groove (13) is formed in the outer surface of the pump body (7) on the side away from the impeller (10). A vacuum drive assembly is fixedly installed in the interior of the installation groove (13). A plurality of automatic reset conduction assemblies are sequentially slidably connected through the interior of the installation groove (13). Both ends of the automatic reset conduction assembly are fixedly connected to the sliding ring (9) and the movable end of the vacuum drive assembly respectively. A cover plate (2) is fixedly installed in the interior of the installation groove (13) in an embedded manner. An airbag (20) is fixedly connected to one side of the outer surface of the cover plate (2) corresponding to the installation groove (13). One side of the outer surface of the airbag (20) is in contact with the outer surface of the vacuum drive assembly. A dual detection device is fixedly installed in the interior of the installation groove (13), and the dual detection device cooperates with the automatic reset conduction assembly; The vacuum drive assembly includes a flexible drive member (3) fixedly installed in the installation groove (13) in a sealed and embedded manner. A spring base (4) is attached to one side of the outer surface of the flexible drive member (3). A groove (21) is formed in the outer surface of the flexible drive member (3), and the spring base (4) is located inside the groove (21). A ring-shaped positioning ring (22) is fixedly connected to one side of the outer surface of the flexible drive member (3). A ring-shaped positioning groove cooperating with the ring-shaped positioning ring (22) is formed in the outer surface of the pump body (7), and the outer surface of the spring base (4) is slidably connected to the inner wall of the installation groove (13). The vacuum drive assembly further includes an air extraction hole (16) fixedly formed in one side of the outer surface of the pump body (7). Both ends of the air extraction hole (16) are communicated with the outside of the pump body (7) and the interior of the installation groove (13) respectively. One end of the air extraction hole (16) is fixedly connected to an air extraction pipe (17), and one end of the air extraction pipe (17) is fixedly connected to a first connector. The automatic reset conduction assembly includes a plurality of guide columns (12). The plurality of guide columns (12) penetrate through the installation groove (13) in a circular array, and both ends of the guide columns (12) are fixedly connected to one side of the outer surfaces of the sliding ring (9) and the spring base (4) respectively. A seal (14) is fixedly sleeved on the outer surface of the guide column (12) in a sealed manner. The automatic reset conduction assembly further includes a return spring (6). The return spring (6) is sleeved on the outer surface of the guide column (12). Both ends of the return spring (6) are in contact with one side of the outer surfaces of the installation groove (13) and the spring base (4) respectively. A plurality of guide posts (11) are fixedly connected to the outer surface of the spring base (4) in a circular array, and one end of the return spring (6) is sleeved on the outer surface of the guide post (11).

2. The variable flow pump with flexible adjustment according to claim 1, wherein: The shapes of the installation groove (13), the spring base (4), the flexible drive member (3), and the cover plate (2) are all annular. The cross-section of the flexible drive member (3) is in a W shape. The spring base (4) is arranged inside the flexible drive member (3). The cover plate (2) is fixedly connected to the outer surface of the pump body (7) by bolts, and an annular counterbore groove matching the cover plate (2) is provided on the outer surface of the pump body (7).

3. The variable flow pump with flexible adjustment according to claim 2, wherein: On one side of the inner wall of the installation groove (13), a plurality of spring guide grooves are annularly arranged. One end of the return spring (6) extends into the interior of the spring guide groove, and one end of the return spring (6) is slidably connected to the inner wall of the spring guide groove.

4. A flexible adjustable variable flow water pump according to claim 1, characterized in that: A flange (1) is fixedly sleeved on the outer surface of the end of the drive shaft (5) far from the impeller (10). The flange (1) is fixedly connected to the drive shaft (5) by bolts. A plurality of first mounting holes are sequentially annularly arranged on the outer surface of the flange (1). A plurality of second mounting holes are sequentially provided on the outer surface of the pump body (7). Internal threads are provided on the inner walls of the first mounting holes and the second mounting holes.

5. A flexible flow-adjustable variable flow water pump according to claim 1, characterized in that: A receiving groove matching the sliding ring (9) is provided inside the pump body (7). The diameter of the sliding ring (9) is smaller than the diameter of the working housing (15). The outer surface of the sliding ring (9) is slidably connected to the inner wall of the receiving groove. The shapes of the pump body (7) and the sliding ring (9) are both annular housing shapes.

6. The flexible flow-adjustable water pump according to claim 5, characterized in that: A water seal (8) is sleeved and rotatably connected to the outer surface of the drive shaft (5). The water seal (8) is fixedly installed inside the pump body (7). A plurality of third mounting holes are annularly arranged on the inner wall of the receiving groove. A plurality of the seals (14) are sequentially and sealingly slidably connected inside the corresponding third mounting holes.

7. The variable flow pump with flexible adjustment according to claim 3, characterized in that: The dual detection device includes a pressure sensor (18) fixedly installed through the outer surface of one side of the pump body (7). The detection end of the pressure sensor (18) penetrates the pump body (7) and extends into the interior of the installation groove (13). The dual detection device further includes a plurality of pressure sensors (19). The plurality of pressure sensors (19) are respectively embedded and fixedly installed inside the spring guide grooves. One end of the return spring (6) is in contact with the outer surface of the pressure sensor (19). A controller and an alarm are sequentially fixedly installed on the outer surface of one side of the pump body (7). The pressure sensor (18), the pressure sensors (19), and the alarm are all electrically connected to the controller through wires. The sensor is electrically connected to a display screen through a wire.

8. The variable flow pump with flexible adjustment according to claim 7, characterized in that: An air inlet pipe is fixedly connected through one side of the outer surface of the airbag (20). One end of the air inlet pipe penetrates the cover plate (2) and extends to the outside. A second connector is fixedly connected to the end of the air inlet pipe located outside the cover plate (2). An exhaust pipe is fixedly connected through one side of the outer surface of the airbag (20). One end of the exhaust pipe penetrates the cover plate (2) and extends to the outside. An electromagnetic pressure relief valve is fixedly connected to the side of the exhaust pipe located outside the cover plate (2). The electromagnetic pressure relief valve is electrically connected to the controller through a wire.

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