Water pump and water supply system

Abstract

The embodiment of the application provides a water pump and a water supply system, and relates to the technical field of water pumps. The water pump comprises a pump body, a pump shaft, a plurality of impellers, a plurality of guide vanes and a plurality of adjusting structures. The pump body has a pump cavity. The pump shaft is rotationally connected to the pump body, and at least part of the pump shaft is located in the pump cavity. The impeller is fixedly connected to the pump shaft, and the impeller is located in the pump cavity. The guide vane is fixedly connected to the pump body, and the guide vane is located in the pump cavity. Each impeller and each guide vane are alternately arranged along the axial direction of the pump shaft. The guide vane is used for receiving the fluid splashed by the previous impeller and guiding the fluid into the next impeller. The adjusting structure is arranged on the guide vane in one-to-one correspondence. The adjusting structure comprises at least one groove and / or at least one protrusion, so that the frequency of the exciting force generated when the adjacent two guide vanes are in contact with the fluid is different. The water pump and the water supply system of the embodiment of the application can ensure effective noise reduction while not hindering the heat dissipation of the surface of the pump body.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water pumps, and in particular to a water pump and a water supply system. BACKGROUND

[0002] During operation, a water pump inevitably generates vibrations. These vibrations are transmitted to the surrounding environment through the pump body, causing noise pollution.

[0003] In related technologies, a soundproof cover is arranged outside the water pump, and the sound-absorbing material in the soundproof cover can dissipate part of the sound energy to reduce the noise transmitted by the water pump.

[0004] However, the soundproof cover not only blocks the noise, but also hinders the heat dissipation of the surface of the pump body, resulting in poor heat dissipation of the water pump. SUMMARY

[0005] The embodiments of the present application provide a water pump and a water supply system, which can effectively reduce noise without hindering the heat dissipation of the surface of the pump body.

[0006] In a first aspect, the embodiments of the present application provide a water pump, comprising a pump body, a pump shaft, a plurality of impellers, a plurality of guide vanes, and a plurality of adjusting structures. The pump body has a pump cavity. The pump shaft is rotationally connected to the pump body, and at least part of the pump shaft is located in the pump cavity. The impeller is fixedly connected to the pump shaft and located in the pump cavity. The guide vane is fixedly connected to the pump body and located in the pump cavity. The guide vanes and the impellers are alternately arranged along the axial direction of the pump shaft. The guide vanes are used to receive the fluid splashed by the previous impeller and guide the fluid into the next impeller. The adjusting structure is arranged on each guide vane one by one, and the adjusting structure comprises at least one groove and / or at least one protrusion, so that the frequency of the excitation force generated when the adjacent two guide vanes contact the fluid is different.

[0007] In some possible implementation manners, the adjusting structure of one of the adjacent two guide vanes comprises at least one groove, and the adjusting structure of the other comprises at least one protrusion.

[0008] In some possible implementation manners, the number of grooves or protrusions of the adjusting structure on one of the adjacent two guide vanes is different from that of the other.

[0009] In some possible implementation manners, the shape of at least one of the grooves and the protrusions is semicircular, rectangular, triangular, elliptical, trapezoidal, or arc-shaped.

[0010] In some possible implementation manners, the impeller comprises a first cover body and a plurality of first blades, the first cover body has a mounting hole, a first flow guide cavity, a suction port in communication with the first flow guide cavity, and a splash port in communication with the first flow guide cavity, the first cover body is fixedly connected with the pump shaft through the mounting hole, the first blades are arranged in the first flow guide cavity in a spaced manner, the suction port is located at a middle portion of the first cover body, the splash port is located at a circumferential edge of the first cover body, and the first blades extend from the suction port to the splash port.

[0011] The guide vane comprises a second cover body and a plurality of second blades, the second cover body has a through hole, a second flow guide cavity, a receiving port in communication with the second flow guide cavity, and a guide inlet in communication with the second flow guide cavity, the pump shaft is inserted into the through hole, and a gap is formed between the pump shaft and the second cover body, the second blades are arranged in the second flow guide cavity in a spaced manner, the receiving port is located at a circumferential edge of the second cover body, the guide inlet is located at a middle portion of the second cover body, and the second blades extend from the receiving port to the guide inlet.

[0012] The receiving port of the guide vane is located at one side of the splash port of the previous impeller, and the receiving port is used for receiving the fluid splashed out of the splash port. The guide inlet of the guide vane is located at one side of the suction port of the next impeller, and the guide inlet is used for guiding the fluid into the suction port.

[0013] In some possible implementation manners, the second cover body and / or the outer edge of the at least one second blade is provided with an adjusting structure.

[0014] In some possible implementation manners, the guide vane further comprises a third cover body, the third cover body is connected with the second cover body, the third cover body is located at one side of the second cover body facing the next impeller, and one of the adjacent two third cover bodies is connected with the other. The third cover body is provided with an adjusting structure.

[0015] In some possible implementation manners, the water pump further comprises a damping structure, the damping structure is fixedly connected with the pump body, and the damping structure is located in the pump body.

[0016] In some possible implementation manners, the damping structure comprises an elastic layer, a reinforcing layer, and a protective layer. The elastic layer is arranged on the inner wall of the pump body. The reinforcing layer is arranged on one side of the elastic layer away from the inner wall of the pump body, and the reinforcing layer is a metal layer or a fiber layer. The protective layer is arranged on one side of the reinforcing layer away from the elastic layer.

[0017] In a second aspect, the embodiments of the present application provide a water supply system, comprising a water supply device and any water pump provided in the first aspect connected with the water supply device.

[0018] The water pump and the water supply system provided by the embodiments of the present application can actively interfere with the boundary layer flow state of the fluid when the fluid splashes out of the last impeller of the water pump and flows through and contacts the adjusting structure (i.e., the groove and / or the protrusion) on the surface of the guide vane. The interference can cause a small vortex separation phenomenon in a local area, thereby effectively dispersing the periodic and large-scale vortex structure that can be formed on the surface of the guide vane. By suppressing the formation of the periodic and large-scale vortex structure, the generation of the fluid excitation source can be suppressed, so as to reduce the generation of the fluid excitation noise from the source.

[0019] In addition, due to the presence of the adjusting structure, the excitation force generated when the adjacent two guide vanes contact the fluid is different in frequency, so that the excitation frequency of the fluid excitation noise generated by the guide vanes is no longer concentrated in a single or several narrow frequency bands. The adjusting structure, through its unique geometric shape and disturbance to the fluid, makes the excitation frequencies different, so as to disperse the total energy of the fluid excitation noise from the concentrated narrow frequency band to a wider frequency range. The dispersion of the energy can effectively reduce the energy peak value of the noise at a single frequency point. Therefore, by reducing the energy density at a specific frequency point, the water pump of the embodiments of the present application can achieve a better noise reduction effect.

[0020] In addition, unlike the way of blocking noise by setting a soundproof cover outside the water pump in the related art, the noise reduction scheme of the embodiments of the present application is realized by optimizing the interaction between the fluid and the guide vane inside the water pump. Therefore, the internal noise reduction mechanism does not hinder the heat dissipation of the surface of the pump body, so that the effective noise reduction can be ensured while avoiding the poor heat dissipation problem caused by the traditional soundproof cover, thereby improving the operation efficiency and service life of the water pump. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate one embodiment consistent with the present application and, together with the description, serve to explain the principles of the application.

[0022] Figure 1 A structural schematic diagram of a water supply system provided by the embodiments of the present application;

[0023] Figure 2 A sectional schematic diagram of a water pump of the embodiments of the present application;

[0024] Figure 3 A structural schematic diagram of a guide vane provided by the embodiments of the present application;

[0025] Figure 4 Another structural schematic diagram of a guide vane provided by the embodiments of the present application;

[0026] Figure 5A structure schematic view of an impeller provided by an embodiment of the present application;

[0027] Figure 6 A structure schematic view of a damping structure connected with a pump body provided by an embodiment of the present application.

[0028] Legend of reference signs:

[0029] 10, water supply device; 20, water pump; 30, water using facility;

[0030] 100, pump body; 110, pump cavity; 120, liquid inlet channel; 130, liquid outlet channel;

[0031] 200, pump shaft;

[0032] 300, impeller; 310, first cover body; 320, first blade; 330, mounting hole; 340, first flow guide cavity; 350, suction port; 360, splashing port;

[0033] 400, guide vane; 410, second cover body; 420, second blade; 430, through hole; 440, second flow guide cavity; 450, receiving port; 460, guide port; 470, third cover body;

[0034] 500, adjusting structure; 510, groove; 520, protrusion;

[0035] 600, damping structure; 610, elastic layer; 620, reinforcing layer; 630, protective layer.

[0036] For the purpose of understanding the scheme of the embodiments of the present application, the spline curves and arrows used in the reference signs in the drawings are described as follows: the components indicated by the spline curves without arrows can be solid components, i.e. components with solid structures; the components indicated by the spline curves with arrows can be virtual components, i.e. components without solid structures; in some cases, the components indicated by the spline curves with arrows can also be assembly bodies with solid structures or virtual structures.

[0037] The specific embodiments of the present application have been shown by the above drawings, and will be described in more detail hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application by any means, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0038] For the purpose of making the concept, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely by referring to the drawings of the embodiments of the present application.

[0039] It should be noted that, in this document, the terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between such entities or operations. In the description of the embodiments of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the embodiments of the present application and simplify the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the elements defined by the statement "include" do not exclude the presence of other identical elements in the process, method, article or device including the element. If there is no conflict, the embodiments of the present application and various features in the embodiments can be combined with each other, and all within the scope of protection of the present application.

[0040] Figure 1 A structural schematic diagram of a water supply system provided by the embodiments of the present application.

[0041] The water supply system provided by the embodiments of the present application can be applied to the field of domestic water supply, the field of commercial buildings, the field of industrial production, the field of agricultural irrigation, the field of municipal public facilities, the field of fire fighting system, etc.

[0042] As shown in Figure 1 The embodiments of the present application provide a water supply system, which comprises a water supply device 10 and a water pump 20 connected with the water supply device 10. Wherein, the water supply device 10 can provide a water source, and the water pump 20 can pump the water source into a water using facility 30.

[0043] In some embodiments, the water supply device 10 can comprise a water storage tank for storing fluid to be supplied, and the water pump 20 is responsible for pressurizing and delivering the fluid in the water storage tank to the water using facility 30.

[0044] In some embodiments, the water supply device 10 can comprise a pressure tank, which cooperates with the water pump 20 to maintain the pressure in the water supply pipe network stable, and reduce the frequent start and stop of the water pump 20.

[0045] In some embodiments, the water supply device 10 can include one or more filtration units for purifying the fluid to ensure the quality of the water supply.

[0046] In some embodiments, the water supply device 10 can further include a control unit capable of monitoring the operating status of the water supply system and intelligently adjusting the start-stop and operating parameters of the water pump 20 according to the water demand to achieve energy saving and optimization of water supply.

[0047] In some embodiments, the connection between the water supply device 10 and the water pump 20 can be a pipe connection, in which the water inlet of the water pump 20 is connected to the water outlet of the water supply device 10 through a pipe to form a fluid passage.

[0048] In some embodiments, the connection between the water supply device 10 and the water pump 20 can also include an electrical connection, such as connecting the power supply of the water pump 20 to the control unit of the water supply device 10 through a cable to achieve remote control and monitoring of the water pump 20.

[0049] Currently, the water pump inevitably generates vibrations during operation. These vibrations are transmitted to the surrounding environment through the pump body, causing noise pollution.

[0050] The related art sets a soundproof cover outside the water pump, and the sound-absorbing material inside the soundproof cover can dissipate part of the sound energy to reduce the noise transmitted outward by the water pump.

[0051] However, the soundproof cover not only blocks the noise but also hinders the heat dissipation of the surface of the pump body, resulting in poor heat dissipation of the water pump.

[0052] Figure 2 A cross-sectional view of the water pump 20 of the embodiments of the present application, Figure 3 A structural schematic view of the guide vane 400 provided by the embodiments of the present application, Figure 4 Another structural schematic view of the guide vane 400 provided by the embodiments of the present application.

[0053] As Figure 2 shown, the water pump 20 provided by the embodiments of the present application includes a pump body 100, a pump shaft 200, a plurality of impellers 300, a plurality of guide vanes 400, and a plurality of adjustment structures 500. The pump body 100 has a pump cavity 110 inside. The pump shaft 200 is rotationally connected to the pump body 100, and at least part of the pump shaft 200 is located inside the pump cavity 110. The impeller 300 is fixedly connected to the pump shaft 200, and the impeller 300 is located inside the pump cavity 110. The guide vane 400 is fixedly connected to the pump body 100, and the guide vane 400 is located inside the pump cavity 110. Each impeller 300 and each guide vane 400 are alternately arranged along the axial direction of the pump shaft 200. The guide vane 400 is used to receive the fluid splashed by the previous impeller 300 and guide the fluid into the next impeller 300 to achieve step-by-step pressurization and delivery of the fluid. Figure 3and Figure 4 As shown, the adjusting structure 500 is one-to-one correspondence arranged on the guide vane 400, and the adjusting structure 500 includes at least one groove 510 and / or at least one protrusion 520, so that the frequency of the excitation force generated when the adjacent two guide vanes 400 are in contact with the fluid is not the same.

[0054] In order to solve the problem of noise generated when the water pump 20 is running in the related art, and avoid the poor heat dissipation caused by the soundproof cover, the embodiment of the present application innovatively sets a plurality of adjusting structures 500 on the guide vane 400 of the water pump 20. These adjusting structures 500 are one-to-one correspondence arranged on each guide vane 400, and each adjusting structure 500 can include at least one groove 510 and / or at least one protrusion 520. In this way, the frequency of the excitation force generated when the adjacent two guide vanes 400 are in contact with the fluid can be different.

[0055] Specifically, when the fluid splashes out from the last impeller 300, flows through and contacts the adjusting structure 500 (i.e. the groove 510 and / or the protrusion 520) on the surface of the guide vane 400, the groove 510 and / or the protrusion 520 will actively interfere with the boundary layer flow state of the fluid. This interference will cause a small vortex separation phenomenon in the local area, thereby effectively dispersing the periodic and large-scale vortex structure that may be formed on the surface of the guide vane 400. By suppressing the formation of these periodic and large-scale vortex structures, the generation of fluid excitation sources can be suppressed, thereby reducing the generation of fluid excitation noise from the source.

[0056] And, due to the presence of the adjusting structure 500, the frequency of the excitation force generated when the adjacent two guide vanes 400 are in contact with the fluid is different, so that the excitation frequency of the fluid excitation noise generated by the guide vane 400 is no longer concentrated in a single or several narrow frequency bands. The adjusting structure 500, through its unique geometric shape and disturbance to the fluid, makes the excitation frequencies different, so as to disperse the total energy of the fluid excitation noise from the concentrated narrow frequency band to a wider frequency range. The dispersion of energy can effectively reduce the energy peak value of noise at a single frequency point. Therefore, by reducing the energy density at a specific frequency point, the water pump 20 of the embodiment of the present application can achieve better noise reduction effect.

[0057] In addition, unlike the way of blocking noise by setting a soundproof cover outside the water pump in the related art, the noise reduction scheme of the embodiment of the present application is realized by optimizing the interaction between the fluid and the guide vane 400 inside the water pump 20. Therefore, this internal noise reduction mechanism will not hinder the heat dissipation of the surface of the pump body 100, so as to ensure effective noise reduction while avoiding the problem of poor heat dissipation caused by the traditional soundproof cover, thereby improving the operation efficiency and service life of the water pump 20.

[0058] It should be noted that the type of fluid provided by the embodiments of the present application can be water, oil and the like.

[0059] In some embodiments, as shown in FIG. 5A, the adjusting structure 500 can only include at least one groove 510, or, as shown in FIG. 5B, the adjusting structure 500 can only include at least one protrusion 520, or can include both at least one groove 510 and at least one protrusion 520 to provide different fluid disturbance effects. Figure 3 Figure 4

[0060] In some embodiments, the groove 510 can be formed during the shaping process of the guide vane 400, for example, by setting the groove 510 on the guide vane 400 mold. Alternatively, in other embodiments, the groove 510 can be formed on the guide vane 400 by milling, carving and the like.

[0061] In some embodiments, the protrusion 520 can be integrally formed with the guide vane 400 or separately provided. When the protrusion 520 is separately provided from the guide vane 400, the protrusion 520 can be connected with the guide vane 400 by welding, bonding and the like.

[0062] In some embodiments, the pump body 100 has a liquid inlet channel 120, which is in communication with the pump cavity 110, and the fluid can enter the pump cavity 110 through the liquid inlet channel 120.

[0063] In some embodiments, the pump body 100 has a liquid outlet channel 130, which is in communication with the pump cavity 110, and the fluid can flow out of the pump cavity 110 through the liquid outlet channel 130.

[0064] In some embodiments, the impeller 300 and the pump shaft 200 can be connected by key connection, spline connection or thread connection and the like to ensure reliable connection between the impeller 300 and the pump shaft 200.

[0065] In some embodiments, the guide vane 400 and the pump body 100 can be connected by welding, bolt connection, clamping and the like to ensure stable connection between the guide vane 400 and the pump body 100.

[0066] In some embodiments, the pump cavity 110 can adopt a cylindrical structure to facilitate the installation of the impeller 300 and the guide vane 400 and the flow of fluid.

[0067] In some possible implementations, the adjusting structure 500 of one of the two adjacent guide vanes 400 includes at least one groove 510, and the adjusting structure 500 of the other includes at least one protrusion 520.

[0068] ​​Since one guide vane 400 has a groove 510 as the adjusting structure 500 and the other guide vane 400 has a protrusion 520 as the adjusting structure 500, the difference in structure makes the two guide vanes 400 disturb the fluid boundary layer in different ways when the guide vanes 400 respectively receive the fluid splashed by the corresponding previous impeller 300. Specifically, the groove 510 forms a concave area inward when the fluid flows through, causing the fluid to generate a backflow and an inner vortex flow structure at the area, thereby changing the local pressure distribution and flow velocity gradient. The protrusion 520 forms a convex area outward when the fluid flows through, forcing the fluid to generate a flow around and an outer vortex flow structure at the area, also changing the local flow characteristics.

[0069] Here, the groove 510 mainly destroys the stability of the boundary layer by generating a local low-pressure area and a separation bubble, while the protrusion 520 mainly changes the flow state of the boundary layer by generating a local high-pressure area and a shear layer. Thus, the disturbance frequency, disturbance intensity and disturbance mode of the fluid boundary layer generated by the two adjacent guide vanes 400 at their respective positions are different, so that the frequencies of the exciting forces generated by the two guide vanes 400 are different. In this way, the structure of the adjusting structure 500 of the two adjacent guide vanes 400 is different, which is conducive to interfering with the flow state of the boundary layer, and thus the total energy of the fluid exciting noise can be effectively dispersed from a concentrated narrow frequency band to a wider frequency range, and the energy peak at a single frequency point can be reduced to a greater extent.

[0070] In some embodiments, the adjusting structure 500 includes one or more than two protrusions 520 or grooves 510. When the number is more than two, the number of disturbance points can be increased while maintaining the difference in structure type, further enhancing the interference effect on the flow state of the boundary layer.

[0071] For example, when the number of grooves 510 and protrusions 520 is more than two, the arrangement spacing of the grooves 510 included in the adjusting structure 500 of one of the two adjacent guide vanes 400 can be different from the arrangement spacing of the protrusions 520 included in the adjusting structure 500 of the other guide vane 400. This spacing difference can make the frequency characteristics of the periodic disturbances generated by the two guide vanes 400 on the fluid more different.

[0072] In some embodiments, the depth of the groove 510 included in the adjusting structure 500 of one of the two adjacent guide vanes 400 can be different from the height of the protrusion 520 included in the adjusting structure 500 of the other guide vane 400. This size difference can further increase the difference in disturbance characteristics of the fluid boundary layer by the two guide vanes 400.

[0073] In some embodiments, the width of the groove 510 included in the adjustment structure 500 of one of the two adjacent guide vanes 400 can be different from the width of the protrusion 520 included in the adjustment structure 500 of the other, so as to adjust the disturbance range and intensity of the boundary layer by changing the lateral dimension of the disturbance feature.

[0074] In some possible implementations, the number of grooves 510 or protrusions 520 included in the adjustment structure 500 on one of the two adjacent guide vanes 400 is different from that on the other.

[0075] When the fluid flows through these adjacent guide vanes 400 in sequence, due to the difference in the number of grooves 510 and protrusions 520, the disturbance intensity and frequency of the fluid boundary layer by each guide vane 400 also differs. Specifically, the guide vane 400 with more grooves 510 or protrusions 520 will disturb the fluid boundary layer at more locations, forming more intensive local vortex separation points, so that the pressure pulsation frequency components generated by the fluid at the guide vane 400 are more abundant. While the guide vane 400 with fewer grooves 510 or protrusions 520 disturbs the fluid at fewer locations, and the pressure pulsation frequency components generated thereby are relatively concentrated. This difference in the number causes the excitation force frequency characteristics generated by the adjacent guide vanes 400 to further separate, and to present a wider distribution in the frequency domain, so as to more fully disperse the fluid excitation noise energy into a wide frequency range, effectively reducing the energy concentration at any frequency point, and achieving a better noise reduction effect.

[0076] It should be noted that, regardless of whether the types (including at least one of the groove 510 or the protrusion 520) included in the adjustment structure 500 of the two are consistent, the number of grooves 510 or protrusions 520 included in the adjustment structure 500 on one of the two adjacent guide vanes 400 can be different from that on the other. Exemplarily, when the types are consistent, the adjustment structure 500 on each guide vane 400 includes at least one groove 510 and / or at least one protrusion 520, and the number of grooves 510 or protrusions 520 included in the adjustment structure 500 on one of the two adjacent guide vanes 400 is different from that on the other.

[0077] It can be understood that when the number of grooves 510 or protrusions 520 is more than two, each groove 510 or protrusion 520 can be arranged in the axial direction and / or the circumferential direction of the guide vane.

[0078] It can be understood that the number of grooves 510 or protrusions 520 included in the adjustment structure 500 on each guide vane 400 can be different from each other. In this way, the fluid excitation force frequency can be dispersed more widely.

[0079] In some possible implementations, the shape of at least one of the groove 510 and the protrusion 520 is semicircular, rectangular, triangular, elliptical, trapezoidal, or arc-shaped.

[0080] The different shapes of the grooves 510 and the protrusions 520 will generate different flow field disturbance patterns when in contact with the fluid, and these different disturbance patterns will result in differences in the location, intensity and periodicity of the boundary layer separation, and thus the frequency characteristics of the fluid excitation force generated by each shape will be different, thereby achieving the ability to adjust the excitation frequency of the noise by shape diversification, and creating more design freedom for the adjacent guide vanes 400 to generate different excitation frequencies.

[0081] The shape of the grooves 510 and the protrusions 520 can refer to the shape of the projection on the reference surface perpendicular to the axial direction.

[0082] It can be understood that the adjustment structure 500 of one of the two adjacent guide vanes 400 can include grooves 510 or protrusions 520 that are the same or different in structure as the other. It should be noted that when the types (including at least one of the grooves 510 or the protrusions 520) included in the adjustment structure 500 of the two are consistent, and the number of the grooves 510 and / or the protrusions 520 included is consistent, at least one groove 510 or protrusion 520 included in the grooves 510 and / or the protrusions 520 included in the adjustment structure 500 of the two are different in shape from at least one groove 510 or protrusion 520 of the other, thereby ensuring that the excitation force frequencies generated by the two are different.

[0083] It can also be understood that the shapes of the grooves 510 or the protrusions 520 included in the adjustment structure 500 on different guide vanes 400 can be different from each other, or partially the same and partially different. The shapes of the grooves 510 or the protrusions 520 included in the adjustment structure 500 on each guide vane 400 can be different from each other, or partially the same and partially different.

[0084] Figure 5 A structural schematic diagram of an impeller 300 provided by an embodiment of the present application.

[0085] In some possible implementations, as shown in Figure 5 The impeller 300 includes a first cover 310 and a plurality of first blades 320. The first cover 310 has a mounting hole 330, a first flow guide cavity 340, a suction inlet 350 communicating with the first flow guide cavity 340, and a splash opening 360 communicating with the first flow guide cavity 340. The first cover 310 is fixedly connected with the pump shaft 200 through the mounting hole 330. The first blades 320 are arranged in the first flow guide cavity 340 at intervals. The suction inlet 350 is located in the middle of the first cover 310, and the splash opening 360 is located at the circumferential edge of the first cover 310. The first blades 320 extend from the suction inlet 350 to the splash opening 360.

[0086] As shown in Figure 3 orFigure 4 As shown, the guide vane 400 includes a second cover body 410 and a plurality of second vanes 420, the second cover body 410 has a through hole 430, a second flow guide cavity 440, a receiving port 450 in communication with the second flow guide cavity 440, and a guide inlet 460 in communication with the second flow guide cavity 440, the pump shaft 200 is inserted into the through hole 430, and there is a gap between the pump shaft 200 and the second cover body 410, the second vanes 420 are arranged in the second flow guide cavity 440 in a spaced manner, the receiving port 450 is located at the circumferential edge of the second cover body 410, the guide inlet 460 is located at the middle of the second cover body 410, and the second vanes 420 extend from the receiving port 450 to the guide inlet 460.

[0087] Among them, the receiving port 450 of the guide vane 400 is located at one side of the splash port 360 of the previous impeller 300, and the receiving port 450 is used to receive the fluid splashed from the splash port 360. The guide inlet 460 of the guide vane 400 is located at one side of the suction port 350 of the next impeller 300, and the guide inlet 460 is used to guide the fluid into the suction port 350.

[0088] In the embodiment of the present application, the first cover body 310 of the impeller 300 is provided with a mounting hole 330, a first flow guide cavity 340, a suction port 350, and a splash port 360, wherein the suction port 350 is located at the middle of the first cover body 310, the splash port 360 is located at the circumferential edge of the first cover body 310, a plurality of first vanes 320 are arranged in the first flow guide cavity 340 in a spaced manner and extend from the suction port 350 to the splash port 360. In this way, when the impeller 300 is fixedly connected with the pump shaft 200 through the mounting hole 330 and rotates with the pump shaft 200, the fluid is sucked into the first flow guide cavity 340 from the suction port 350 located at the middle, the first vanes 320 work on the fluid, forcing the fluid to rotate with the impeller 300, due to the action of centrifugal force, the fluid moves along the first vanes 320 from the center to the outer edge of the impeller 300, and its speed and pressure increase at the same time, thereby converting the input mechanical energy into kinetic energy and pressure energy of the fluid. The fluid is finally splashed out of the splash port 360 located at the circumferential edge, thereby realizing the basic pumping function of the impeller 300.

[0089] The second cover body 410 of the guide vane 400 is provided with a through hole 430, a second flow guide cavity 440, a receiving port 450 and a guide inlet 460. The receiving port 450 is located at the circumferential edge of the second cover body 410, the guide inlet 460 is located at the middle of the second cover body 410, a plurality of second vanes 420 are arranged at intervals in the second flow guide cavity 440 and extend from the receiving port 450 to the guide inlet 460, and the pump shaft 200 is inserted into the through hole 430 and has a gap between the pump shaft 200 and the second cover body 410. In this way, the pump shaft 200 can rotate freely in the through hole 430 without driving the guide vane 400 to rotate, so that the guide vane 400 remains in a stationary state. Therefore, when the receiving port 450 of the guide vane 400 is arranged on one side of the spatter port 360 of the previous impeller 300, the receiving port 450 at the circumferential edge can effectively receive the fluid spattered from the spatter port 360 of the previous impeller 300. After the fluid enters the second flow guide cavity 440, the fluid flow area gradually increases and the flow rate of the fluid decreases due to the gradual diffusion of the second flow guide cavity 440 along the second vanes 420 from the receiving port 450 to the guide inlet 460. According to Bernoulli's principle, under the premise of the conservation of total energy of the fluid, the decrease in flow rate means a decrease in kinetic energy, and this decrease in kinetic energy is effectively converted into pressure energy, thereby increasing the pressure of the fluid. This process realizes the conversion of velocity energy into pressure energy, so that the lift of the water pump 20 is improved. Subsequently, when the guide inlet 460 of the guide vane 400 is arranged on one side of the suction port 350 of the next impeller 300, the guide inlet 460 at the middle can smoothly guide the fluid after energy conversion into the suction port 350 of the next impeller 300, thereby completing the fluid transmission from the first-stage impeller 300 to the next-stage impeller 300.

[0090] Through the cooperation of the above-mentioned impeller 300 and guide vane 400, the fluid flows between the multi-stage impellers 300 and the multi-stage guide vanes 400 in turn. After passing through each impeller 300, the kinetic energy and pressure energy of the fluid increase, and after passing through each guide vane 400, the kinetic energy of the fluid is converted into pressure energy, thereby realizing the effect of multi-stage pressurization, so that the water pump 20 can generate a higher lift. At the same time, since the impellers 300 and the guide vanes 400 are arranged alternately along the axial direction of the pump shaft 200, a continuous fluid passage is formed, ensuring smooth flow of the fluid. Therefore, through the synergistic effect of the impeller 300 and the guide vane 400, the application realizes efficient water pumping function, not only improves the lift of the water pump 20, but also ensures the continuity and stability of fluid delivery.

[0091] In some embodiments, the mounting hole 330 of the first cover body 310 can be provided as a light hole structure, which is fixedly connected with the pump shaft 200 in a key connection, pin connection or interference fit manner. Alternatively, an internal thread can be arranged in the mounting hole 330, and the pump shaft 200 is fixedly connected with the pump shaft 200 in a threaded connection manner. In addition, the mounting hole 330 can also be fixedly connected with the pump shaft 200 in a welding or bonding manner.

[0092] In some embodiments, the first vanes 320 can be arranged at equal intervals or non-equal intervals in the first flow guide cavity 340. The number of the first vanes 320 can be adjusted according to the design flow rate and head requirement of the water pump 20, and can be typically set to three, four, five, six or more. The increase in the number of vanes can improve the working capacity of the impeller 300 on the fluid.

[0093] In some embodiments, the first vanes 320 can be straight vanes, forward-curved vanes, backward-curved vanes or radial vanes. Different vane shapes can affect the flow characteristics and energy conversion efficiency of the fluid in the impeller 300. The backward-curved vanes can reduce the relative speed of the fluid, reduce energy loss and improve the efficiency of the water pump 20, while the forward-curved vanes can generate higher pressure and are suitable for high head occasions.

[0094] In some embodiments, the suction port 350 can be circular, elliptical or other regular or irregular shape, and the size of the suction port 350 can be adjusted according to the design flow rate of the water pump 20.

[0095] In some embodiments, the splash port 360 can be designed as a ring-shaped opening structure uniformly distributed along the circumferential edge of the first cover 310, or as a plurality of separate outlets corresponding to different fluid output directions, so as to better control the splash direction and speed of the fluid.

[0096] In some embodiments, the second vanes 420 can also be arranged at equal intervals or non-equal intervals in the second flow guide cavity 440, and the number of the second vanes 420 can be the same as or different from that of the first vanes 320. The number of vanes of the guide vane 400 can be more or less than that of the impeller 300, so as to avoid resonance phenomenon between the impeller 300 and the guide vane 400.

[0097] In some embodiments, the second vanes 420 can be linear or curved.

[0098] In some embodiments, the shape of the receiving port 450 can match that of the splash port 360, such as both being ring-shaped structures, so as to improve the efficiency of fluid receiving.

[0099] In some embodiments, the materials of the first cover 310 and the second cover 410 can be stainless steel, cast iron, copper alloy or engineering plastic.

[0100] In some possible implementations, as shown in Figure 3 or Figure 4 the second cover 410 and / or the outer edge of the at least one second vane 420 is provided with an adjusting structure 500.

[0101] When the previous impeller 300 rotates, the fluid is radially splashed out from the splash port 360 of the impeller 300, at this time, the fluid first contacts the outer edge region of the guide vane 400, which is the position where the fluid first contacts the guide vane 400 and establishes a boundary layer. Since the outer edge of the second cover body 410 and the second vane 420 is located near the receiving port 450 and directly faces the splashing fluid, by arranging the adjusting structure 500 on the outer edge, the splashing fluid can be in contact with the adjusting structure 500 in the initial stage of entering the second guide flow cavity 440, at this time, the fluid has a high speed and a large kinetic energy, and the adjusting structure 500 can disturb the boundary layer flow state of the fluid in the initial stage of entering the guide vane 400.

[0102] In this way, the flow characteristics of the fluid in the entire second guide flow cavity 440 can be affected from the source, and the periodic and large-scale vortex structure is prevented from being formed when the fluid enters the guide vane 400. At the same time, since the outer edge is the region with the largest contact area and the most direct contact between the fluid and the guide vane 400, the adjusting structure 500 can more fully interact with the fluid, thereby more effectively dispersing the periodic fluid excitation source that may be formed, so that the frequency difference of the excitation forces generated by adjacent two guide vanes 400 is larger, and a better noise reduction effect is achieved.

[0103] In some embodiments, the adjusting structure 500 is arranged only on the outer edge of the second cover body 410, and the outer edge of the second vane 420 is not provided with the adjusting structure 500, thereby simplifying the processing process.

[0104] In some embodiments, the adjusting structure 500 is arranged only on the outer edge of at least one second vane 420, and the outer edge of the second cover body 410 is not provided with the adjusting structure 500, so that the main flow path of the fluid can be more directly affected.

[0105] In some embodiments, the adjusting structure 500 is arranged on the outer edges of the second cover body 410 and at least one second vane 420, so as to disturb the fluid boundary layer at multiple positions, further enhancing the noise reduction effect.

[0106] In some embodiments, the adjusting structure 500 on the outer edge of the second cover body 410 is uniformly distributed in the circumferential direction to realize balanced disturbance of the splashing fluid. Alternatively, in other embodiments, the adjusting structure 500 on the outer edge of the second cover body 410 is non-uniformly distributed in the circumferential direction, and different distribution densities further enrich the frequency components of the excitation force.

[0107] In some embodiments, the number of the second vanes 420 is multiple, and the adjustment structure 500 can be arranged on the outer edges of part or all of the second vanes 420. When the adjustment structure 500 is arranged on the outer edges of part of the second vanes 420, the processing cost can be reduced while ensuring the noise reduction effect. When the adjustment structure 500 is arranged on the outer edges of all of the second vanes 420, the noise reduction effect can be improved.

[0108] In some possible implementations, as shown in Figure 3 or Figure 4 The guide vane 400 further includes a third cover body 470, the third cover body 470 is connected with the second cover body 410, the third cover body 470 is located on the side of the second cover body 410 facing the next impeller 300, and one of the two adjacent third cover bodies 470 is connected with the other. The adjustment structure 500 is arranged on the third cover body 470. The adjustment structure 500 is located on the inner surface of the third cover body 470.

[0109] When the fluid is thrown out of the splash port 360 of the previous impeller 300, the third cover body 470 can form a pre-guide area outside the receiving port 450 of the second cover body 410, so as to preliminarily collect and guide the splashed fluid, so that the fluid can be more orderly gathered into the second flow guide cavity 440, and the receiving efficiency of the fluid by the guide vane 400 is improved.

[0110] By arranging the adjustment structure 500 on the third cover body 470, when the splashed fluid contacts the third cover body 470, the adjustment structure 500 can act on the fluid before the fluid enters the second flow guide cavity 440. The grooves 510 and the protrusions 520 can immediately interfere with the boundary layer flow state of the fluid, and form a local vortex separation on the surface of the third cover body 470, so as to disperse the periodic and large-scale vortex structure that may be formed in the fluid in advance. In this way, the fluid has a modulated flow state when entering the second flow guide cavity 440, and therefore, compared with the scheme in which the adjustment structure 500 is arranged only on the second cover body 410 or the second vane 420, the adjustment structure 500 on the third cover body 470 can start to play a role at an earlier stage of the fluid flow path, so as to more fully inhibit the formation of the fluid excitation source.

[0111] In addition, one of the two adjacent third cover bodies 470 is connected with the other, forming a continuous guide channel, so that the fluid can always be in a controlled state when flowing between the guide vanes 400, and leakage or backflow of the fluid between the stages is avoided, thereby further improving the overall hydraulic performance of the water pump 20. Through this arrangement, the adjustment structure 500 can more directly and timely act on the splashed fluid, so as to improve the interference effect on the boundary layer flow state, thereby more effectively dispersing the energy of the fluid excitation noise to a wide frequency range, reducing the energy peak value at a single frequency point, and finally achieving a better noise reduction effect.

[0112] In some embodiments, the third cover 470 can be a cylindrical structure, so that the fluid maintains a relatively constant flow rate within the third cover 470, which can reduce the energy loss of the fluid during flow and improve the efficiency of the water pump 20.

[0113] In some embodiments, the third cover 470 and the second cover 410 can be fixed by bolt connection, welding, clamping or one-piece forming.

[0114] In some embodiments, the two adjacent third covers 470 can be fixed by flange connection, buckle connection or threaded connection, so as to facilitate the assembly and maintenance of the water pump 20.

[0115] In some embodiments, the adjusting structure 500 can be arranged at a position of the third cover 470 close to the receiving port 450.

[0116] In some embodiments, the adjusting structure 500 can be arranged at a position of the third cover 470 close to the guide inlet 460.

[0117] In some embodiments, the protrusions 520 and / or the grooves 510 can be arranged along the axial direction and / or the circumferential direction of the third cover 470.

[0118] Figure 6 A structure schematic diagram of the damping structure 600 provided by the embodiments of the present application and connected with the pump body 100.

[0119] In some possible implementation manners, as shown in Figure 2 The water pump 20 can further include a damping structure 600, the damping structure 600 is fixedly connected with the pump body 100, and the damping structure 600 is located in the pump body 100.

[0120] The damping structure 600 can absorb and dissipate the vibration energy generated by the pump body 100 during operation by the material properties of the damping structure 600, so as to convert the vibration energy into heat energy or other forms of energy, thereby effectively reducing the noise transmitted by the pump body 100 to the outside.

[0121] And, since the adjusting structure 500 on the guide vanes 400 makes the exciting force frequency generated when the adjacent two guide vanes 400 are in contact with the fluid not the same, the total energy of the fluid exciting noise is dispersed from the concentrated narrow frequency band to a wider frequency range, and the energy peak at a single frequency point is correspondingly reduced, so that the damping structure 600 no longer needs to deal with extremely high energy peaks at a certain specific frequency point, and the exciting energy it bears is more evenly distributed, which can reduce the difficulty of damping structure 600 to achieve damping. Specifically, when the damping structure 600 faces a dispersed, low-energy wide-frequency excitation, its damping material can continuously dissipate energy in a relatively stable working state without instantaneously processing a large amount of vibration energy at a high energy peak, so that the damping structure 600 can more efficiently process the input vibration energy and maintain high efficiency throughout the wide-frequency working range. In contrast, without the adjusting structure 500, the damping structure 600 may be periodically impacted by high-energy excitation peaks, and the damping material may exhibit response lag or insufficient dissipation capacity at these peaks, resulting in a decrease in damping efficiency at these peaks.

[0122] In addition, since the adjusting structure 500 reduces the energy density at a single frequency point, even if the excitation spectrum covers the natural frequency of the pump body 100, the excitation energy input intensity at these natural frequency points has been reduced, so that when the natural frequency of the pump body 100 and the exciting force frequency resonate, the noise energy generated is correspondingly reduced, and the possibility and intensity of severe resonance can be reduced. In this way, through the cooperation of the damping structure 600 and the adjusting structure 500, a more comprehensive and efficient noise reduction effect can be achieved.

[0123] In some possible implementations, as shown in Figure 6 The damping structure 600 includes an elastic layer 610, a reinforcing layer 620, and a protective layer 630. The elastic layer 610 is arranged on the inner wall of the pump body 100. The reinforcing layer 620 is arranged on the side of the elastic layer 610 away from the inner wall of the pump body 100, and the reinforcing layer 620 is a metal layer or a fiber layer. The protective layer 630 is arranged on the side of the reinforcing layer 620 away from the elastic layer 610.

[0124] The elastic layer 610 is arranged on the inner wall of the pump body 100. When the pump body 100 is excited by vibration, the high-molecular material in the elastic layer 610 periodically deforms, and internal friction occurs between the molecular chain segments, converting mechanical vibration energy into heat energy and dissipating it, thereby effectively reducing the vibration intensity and noise level transmitted by the pump body 100 to the outside. Since the elastic layer 610 is directly attached to the inner wall of the pump body 100, it can start absorbing sound energy at the vibration source, so it can weaken the energy before the vibration propagates to other parts of the pump body 100.

[0125] The reinforcing layer 620 is arranged on the side of the elastic layer 610 away from the inner wall of the pump body 100. The reinforcing layer 620 changes the mass distribution and stiffness characteristics of the whole damping structure 600, and further changes the natural frequency of the pump body 100 system. Specifically, the addition of the reinforcing layer 620 increases the equivalent mass of the pump body 100 or changes the stiffness. According to the vibration theory, the natural frequency of the system is related to the mass and the stiffness, so that the natural frequency of the pump body 100 deviates from the main frequency range of the fluid excitation force. When the natural frequency of the pump body 100 does not coincide with or is far away from the excitation force frequency, the system is difficult to resonate and amplify even if there is external excitation, so the probability and intensity of resonance can be greatly reduced, and the violent vibration and high-intensity noise caused by resonance can be effectively suppressed. In addition, the reinforcing layer 620 is a metal layer or a fiber layer. The metal layer has high density and stiffness, and the fiber layer has good strength and certain flexibility, both of which can better change the mass and stiffness parameters of the pump body 100.

[0126] The protective layer 630 is arranged on the side of the reinforcing layer 620 away from the elastic layer 610. The protective layer 630 forms a smooth contact surface, avoiding direct exposure of the reinforcing layer 620 to the fluid, so that the fluid can flow on a relatively flat surface, reducing frictional resistance and energy loss, thereby ensuring that the flow of the fluid in the pump cavity 110 is smoother, and ensuring that the delivery efficiency of the water pump 20 will not be greatly affected by the arrangement of the damping structure 600.

[0127] In some embodiments, the elastic layer 610 can be a rubber piece, a polyurethane piece, a silica gel piece, etc.

[0128] In some embodiments, when the reinforcing layer 620 is a metal layer, the metal layer can be a sheet or a foil, and the metal layer can be a stainless steel layer, an aluminum alloy layer, a copper alloy layer, or other metal material layers. These metal materials have different densities and stiffnesses, and the degree of deviation of the natural frequency of the pump body 100 can be adjusted as needed.

[0129] In some embodiments, when the reinforcing layer 620 is a fiber layer, a carbon fiber layer, a glass fiber layer, an aramid fiber layer, or other high-strength fiber material layers can be used. These fiber materials have relatively light mass while ensuring strength, and are suitable for application scenarios with weight restrictions.

[0130] In some embodiments, the reinforcing layer 620 can be a net structure or a woven structure. Such a structure has better flexibility and adaptability while ensuring a certain stiffness, and can better conform to the elastic layer 610.

[0131] In some embodiments, the protective layer 630 can be a polytetrafluoroethylene (PTFE) layer or a polyurethane (PU) layer.

[0132] In some embodiments, the elastic layer 610, the reinforcing layer 620 and the protective layer 630 can be connected by bonding, vulcanization or mechanical fixation, etc., to ensure firm combination between the layers and prevent separation or misplacement during operation of the water pump 20.

[0133] It should be noted that the specific implementation process of the damping structure 600 includes but is not limited to the following steps:

[0134] First, the inner flow passage wall of the pump body 100 can be cleaned, degreased, polished or sandblasted to increase the surface roughness and improve the bonding strength.

[0135] Second, the liquid or semi-liquid damping material (such as polyurethane elastomer, damping paint) can be uniformly sprayed or cast onto the inner flow passage wall of the pump body 100 using a spraying device, and the spraying / casting thickness is controlled to ensure uniformity. Then, preliminary solidification is performed.

[0136] Then, if the metal foil is used as the reinforcing layer 620, it can be pre-cut and shaped, implanted when the first layer of damping material is semi-solidified, and then covered by spraying the damping material again. If the fiber layer is used as the reinforcing layer 620, it can be sprayed together with the damping material or sprayed in layers. It can also be directly bonded to the elastic layer 610 by bonding.

[0137] Finally, the protective layer 630 can be provided on the reinforcing layer 620 by spraying or bonding.

[0138] In addition, the above steps can be repeated to form a multi-layer structure according to design requirements.

[0139] It can be understood that the embodiments of the present application can include all or part of the above steps.

[0140] It should be understood that the embodiments of the present application are not limited to the precise structures already described and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present application is only limited by the appended claims.

Claims

1. A water pump characterized by comprising: The utility model relates to a pump, comprising: a pump body (100) having a pump cavity (110) therein; a pump shaft (200) rotatably connected with the pump body (100), at least part of the pump shaft (200) being located in the pump cavity (110); a plurality of impellers (300) fixedly connected with the pump shaft (200), the impellers (300) being located in the pump cavity (110); a plurality of guide vanes (400) fixedly connected with the pump body (100), the guide vanes (400) being located in the pump cavity (110), each of the impellers (300) and each of the guide vanes (400) being alternately arranged along the axial direction of the pump shaft (200), the guide vanes (400) being used for receiving fluid splashed by the previous impeller (300) and guiding the fluid into the next impeller (300); a plurality of adjusting structures (500) corresponding to the guide vanes (400), the adjusting structures (500) comprising at least one groove (510) and / or at least one protrusion (520) so that the exciting force frequency generated when the adjacent two guide vanes (400) contact the fluid is not the same.

2. The water pump of claim 1, wherein The adjusting structure (500) of one of the adjacent two guide vanes (400) comprises at least one groove (510), and the adjusting structure (500) of the other comprises at least one protrusion (520).

3. The water pump of claim 1, wherein The number of the grooves (510) or the protrusions (520) on the adjusting structure (500) of one of the adjacent two guide vanes (400) is different from that on the adjusting structure (500) of the other.

4. The water pump of claim 1, wherein The shape of at least one of the grooves (510) and the protrusions (520) is semicircular, rectangular, triangular, elliptical, trapezoidal or arc-shaped.

5. The water pump of claim 1, wherein The impeller (300) comprises a first cover body (310) and a plurality of first blades (320), the first cover body (310) having a mounting hole (330), a first flow guide cavity (340), a suction inlet (350) in communication with the first flow guide cavity (340) and a splashing opening (360) in communication with the first flow guide cavity (340), the first cover body (310) being fixedly connected with the pump shaft (200) through the mounting hole (330), the first blades (320) being arranged in the first flow guide cavity (340) at intervals, the suction inlet (350) being located in the middle of the first cover body (310), the splashing opening (360) being located at the circumferential edge of the first cover body (310), and the first blades (320) extending from the suction inlet (350) to the splashing opening (360). The guide vane (400) comprises a second cover body (410) and a plurality of second vanes (420), the second cover body (410) has a through hole (430), a second flow guide cavity (440), a receiving port (450) in communication with the second flow guide cavity (440), and a guide inlet (460) in communication with the second flow guide cavity (440), the pump shaft (200) is inserted into the through hole (430), there is a gap between the pump shaft (200) and the second cover body (410), the second vanes (420) are arranged in the second flow guide cavity (440) at intervals, the receiving port (450) is located at the circumferential edge of the second cover body (410), the guide inlet (460) is located at the middle of the second cover body (410), and the second vanes (420) extend from the receiving port (450) to the guide inlet (460). The receiving port (450) of the guide vane (400) is located on one side of the splash port (360) of the last impeller (300), and the receiving port (450) is used for receiving the fluid splashed from the splash port (360); the guide inlet (460) of the guide vane (400) is located on one side of the suction port (350) of the next impeller (300), and the guide inlet (460) is used for guiding the fluid into the suction port (350).

6. The water pump of claim 5, wherein The second cover body (410) and / or the outer edge of at least one second vane (420) is provided with the adjusting structure (500).

7. The water pump of claim 5, wherein The guide vane (400) further comprises a third cover body (470), the third cover body (470) is connected with the second cover body (410), the third cover body (470) is located on the side of the second cover body (410) facing the next impeller (300), one of the adjacent two third cover bodies (470) is connected with the other; The third cover body (470) is provided with the adjusting structure (500).

8. The water pump according to any one of claims 1 to 7, characterized in that Further comprising a damping structure (600), the damping structure (600) is fixedly connected with the pump body (100), and the damping structure (600) is located in the pump body (100).

9. The water pump of claim 8, wherein, The damping structure (600) comprises: an elastic layer (610) arranged on the inner wall of the pump body (100); a reinforcing layer (620) arranged on the side of the elastic layer (610) away from the inner wall of the pump body (100), the reinforcing layer (620) being a metal layer or a fiber layer; a protective layer (630) arranged on the side of the reinforcing layer (620) away from the elastic layer (610).

10. A water supply system, characterized by The water supply device (10) and the water pump according to any one of claims 1-9 connected with the water supply device (10).

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