Impeller and pump

Abstract

The utility model relates to the technical field of plant protection unmanned aerial vehicles, in particular to an impeller and a pump. The impeller comprises a connecting piece and blades; the connecting piece is used for being rotationally arranged in the pump shell around a first axis, the connecting piece comprises a barrel part, the central axis of the barrel part coincides with the first axis, and the two ends of the barrel part are in sealed contact with the inner wall of the pump shell. The plurality of blades are arranged on the outer peripheral surface of the barrel part and are arranged around the first axis at intervals; wherein in the direction parallel to the first axis, the blade is provided with a first edge and a second edge which are oppositely arranged, the blade is provided with a third edge opposite to the connecting piece, and the two ends of the third edge are connected with the first edge and the second edge correspondingly; the blades are in sealing contact with the inner wall of the pump shell through the first edges, the second edges and the third edges so that a cavity can be defined between every two adjacent blades. In this way, the flow of the pump can be controlled, and the service life of the pump can be prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of plant protection drones, and in particular to an impeller and a pump. Background Art

[0002] In recent years, drones have been widely used in the civilian field, especially in the field of crop protection. For example, a plant protection drone is a drone that can perform spraying operations, such as spraying pesticides, seeds, powders, etc. Among them, for plant protection drones that spray liquid pesticides, the pump is an important component. The pump is used to transport the liquid pesticide to the nozzle and spray it out from the nozzle, thereby achieving the spraying of the liquid pesticide.

[0003] In the prior art, the spraying flow rate is usually controlled by a pump, such as a hose pump, which delivers liquid by squeezing a hose, causing the hose to be easily fatigued and damaged, shortening the service life of the hose, and thus shortening the service life of the pump. Utility Model Content

[0004] The embodiments of the present application aim to provide an impeller and a pump, so as to at least extend the service life of the pump.

[0005] In order to solve the above technical problems, the embodiments of the present application adopt the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides an impeller, comprising a connecting member and blades; the connecting member is used to be rotatably arranged in a pump casing around a first axis, the connecting member comprises a cylindrical portion, the central axis of the cylindrical portion coincides with the first axis, and both ends of the cylindrical portion are in sealing contact with the inner wall of the pump casing; a plurality of blades are arranged on the outer circumferential surface of the cylindrical portion, and the plurality of blades are arranged at intervals around the first axis; wherein, along a direction parallel to the first axis, the blade has a first edge and a second edge arranged opposite to each other, the blade has a third edge arranged opposite to the connecting member, and both ends of the third edge are respectively connected to the first edge and the second edge; the blade is in sealing contact with the inner wall of the pump casing through the first edge, the second edge and the third edge, so as to form a cavity between two adjacent blades.

[0007] In some embodiments, a first protrusion is disposed on the end surface of the cylinder portion, the first protrusion surrounds the central axis of the cylinder portion, and the first protrusion is in sealing contact with the inner wall of the pump housing.

[0008] In some embodiments, a second protrusion is provided on a side of the first side facing away from the second side, the second protrusion extends from the cylinder portion to the third side, and the second protrusion is in sealing contact with an inner wall of the pump housing.

[0009] In some embodiments, a third protrusion is provided on a side of the second side facing away from the first side, and the third protrusion extends from the cylindrical body portion to the third side, and the third protrusion is in sealing contact with the inner wall of the pump housing.

[0010] In some embodiments, a bulged portion is provided on the third side.

[0011] In some embodiments, the bulged portion is cylindrical, the central axis of the bulged portion is parallel to the first axis, and the blade is in sealing contact with the inner wall of the pump housing through the outer peripheral surface of the bulged portion.

[0012] In some embodiments, a fourth protrusion is provided on an end face of the bulged portion, and the fourth protrusion extends from the third side to contact the pump housing.

[0013] In some embodiments, the fourth protrusion extends along an edge of the end face of the bulged portion.

[0014] In some embodiments, the connecting member includes a connecting portion disposed on the inner wall of the cylindrical body portion. The connecting portion is provided with a connecting hole for connecting with a motor. Along a direction parallel to the first axis, the connecting portion is recessed from the cylindrical body portion.

[0015] In a second aspect, an embodiment of the present application provides a pump, which includes a pump housing, a motor, and an impeller as described in any one of the above. The impeller is disposed in the pump housing. The motor is disposed in the pump housing, at least a part of the rotating shaft of the motor is disposed in the pump housing, and the rotating shaft of the motor is connected to the connecting hole of the impeller so that the motor directly drives the impeller.

[0016] In some embodiments, the pump housing includes a first housing and a second housing. The first housing is in the shape of a cylinder with an opening at one end, and the second housing covers the opening of the first housing. A first relief hole is provided on a side of the first housing facing away from the second housing. The motor is disposed on a side of the first housing facing away from the second housing, and the rotating shaft of the motor penetrates into the pump housing through the first relief hole.

[0017] For the impeller and pump of the embodiments of the present application, a cavity is formed by enclosing between two adjacent blades, so that the flow rate of the pump can be controlled, and compared with a hose pump, the service life of the pump can be extended.

[0018] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features, and advantages of the present application more obvious and understandable, the specific embodiments of the present application are specifically exemplified below. Description of the Drawings

[0019] One or more embodiments are illustrated by way of example in the corresponding drawings, and these illustrative descriptions do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, and unless otherwise stated, the figures in the drawings do not constitute a scale limitation.

[0020] Figure 1 is a schematic structural view of the impeller according to an embodiment of the present application;

[0021] Figure 2 is a schematic structural view of another perspective of the impeller according to an embodiment of the present application;

[0022] Figure 3 is a schematic structural view of the pump according to an embodiment of the present application;

[0023] Figure 4 is an exploded view of a partial structure of the pump according to an embodiment of the present application.

[0024] The reference numerals in the specific embodiments are as follows:

[0025] 1000, pump;

[0026] 100, impeller;

[0027] 1, connecting member; 11, cylindrical part; 111, first protrusion; 12, connecting part; 121, connecting hole;

[0028] 2, blade; 21, first side; 211, second protrusion; 22, second side; 221, third protrusion; 23, third side; 231, enlarged part; 2311, fourth protrusion;

[0029] 200, pump housing; 201, water inlet pipe; 202, water outlet pipe; 203, first housing; 2031, first relief hole; 204, second housing;

[0030] 300, motor; 400, sealing plate; 401, second relief hole; 500, sealing ring. Detailed description of the specific embodiments

[0031] For ease of understanding of the present application, the present application will be described in more detail below with reference to the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is described as "connected" to another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0033] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the embodiments of this application.

[0034] In the description of the embodiments of this application, the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without additional statements, the above terms have no special meaning and thus cannot be construed as a limitation on the protection scope of this application. In the description of the embodiments of this application, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0035] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not used to limit this application. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0036] In addition, the technical features involved in different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0037] In a first aspect, an impeller 100 is provided in an embodiment of this application. Please refer to Figure 1 and Figure 2, the impeller 100 includes a connecting member 1 and blades 2; the connecting member 1 is rotatably disposed within the pump housing 200 about a first axis. The connecting member 1 includes a cylindrical body portion 11, the central axis of the cylindrical body portion 11 coincides with the first axis, and both ends of the cylindrical body portion 11 are in sealing contact with the inner wall of the pump housing 200; a plurality of blades 2 are disposed on the outer peripheral surface of the cylindrical body portion 11, and the plurality of blades 2 are arranged at intervals about the first axis; wherein, along a direction parallel to the first axis, the blade 2 has a first side 21 and a second side 22 disposed opposite to each other, the blade 2 has a third side 23 disposed opposite to the connecting member 1, and both ends of the third side 23 are respectively connected to the first side 21 and the second side 22; the blade 2 is in sealing contact with the inner wall of the pump housing 200 through the first side 21, the second side 22 and the third side 23, so as to enclose a cavity between two adjacent blades 2. It should be noted that sealing contact means that there is a tight contact between the two, without gaps, and it is not allowed for gas or liquid to pass through the contact area between the two.

[0038] For the convenience of understanding the technical solution and working principle of the impeller 100, the structure of the pump housing 200 will be briefly described below. It can be understood that the pump housing 200 and the impeller 100 form the simplest pump 1000. Therefore, in this application, the structure formed by combining the pump housing 200 and the impeller 100 is referred to as the pump 1000.

[0039] Please refer to Figure 3 and Figure 4 , the pump housing 200 is in the shape of a cylindrical shell. It can be understood that the cavity inside the pump housing 200 is cylindrical, the inner wall of the pump housing 200 includes two circular end faces and a cylindrical inner peripheral surface, and the central axis of the cavity inside the pump housing 200 coincides with the first axis. Thus, when the impeller 100 rotates within the pump housing 200, the first side 21, the second side 22 and the third side 23 can always be in sealing contact with the inner wall of the pump housing 200, and both ends of the cylindrical body portion 11 can always be in sealing contact with the inner wall of the pump housing 200. Among them, the first side 21, the second side 22 and both ends of the cylindrical body portion 11 are in sealing contact with the two end faces of the inner wall of the pump housing 200, and the third side 23 is in sealing contact with the inner peripheral surface of the inner wall of the pump housing 200. It can be understood that, please refer to Figure 3 and Figure 4 , the pump housing 200 is provided with a water inlet pipe 201 and a water outlet pipe 202. The water inlet pipe 201 and the water outlet pipe 202 are both communicated with the cavity inside the pump housing 200. When the impeller 100 rotates, the impeller 100 can transport the liquid and gas at the water inlet pipe 201 to the water outlet pipe 202, so as to realize the pumping of the liquid and gas. Optionally, the central axis of the water inlet pipe 201 coincides with the central axis of the water outlet pipe 202, and their central axes are spaced from the first axis, which is beneficial to reducing the resistance of the liquid or gas flowing from the water inlet pipe 201 to the water outlet pipe 202.

[0040] The impeller 100 of the embodiment of the present application. An adjacent pair of blades 2, the inner wall of the pump housing 200, and the outer peripheral surface of the cylindrical portion 11 enclose a sealed cavity. For each rotation of the impeller 100, the volume of the liquid or gas transported is fixed, thereby enabling the control of the flow rate. The lifespan of the impeller 100 of the embodiment of the present application mainly depends on the wear between the impeller 100 and the pump housing 200. Compared with the frequent extrusion of the hose of the hose pump 1000, the lifespan of the pump 1000 will be greatly extended. Therefore, the present application can extend the service life of the pump 1000. Optionally, the impeller 100 is made of an elastic material, such as rubber or silicone, to enhance the sealing contact effect between the impeller 100 and the pump housing 200.

[0041] For the above-mentioned connector 1, please refer to Figure 1 and Figure 2 , the connector 1 includes a connecting portion 12. The connecting portion 12 is disposed on the inner wall of the cylindrical portion 11. The connecting portion 12 is provided with a connecting hole 121 for connecting with the motor 300. That is, the impeller 100 is directly connected to the rotating shaft of the motor 300, and the motor 300 directly drives the impeller 100, which is beneficial to reducing the complexity of the pump 1000, reducing the volume of the pump 1000, and enhancing the reliability of the pump 1000; and reducing the number of moving parts in the pump 1000 is beneficial to reducing the noise of the pump 1000, reducing the energy loss caused by friction, and improving the efficiency of the pump 1000.

[0042] Among them, along the direction parallel to the first axis, the connecting portion 12 is recessed from the cylindrical portion 11. Since the connecting portion 12 is recessed from the cylindrical portion 11, the screw for fixing the connecting portion 12 to the rotating shaft can be partially received in the cylindrical portion 11, improving the problem that the end face of the cylindrical portion 11 cannot be in sealed contact with the inner wall of the pump housing 200 due to the screw protruding from the cylindrical portion 11.

[0043] In some embodiments, please refer to Figure 1 and Figure 2 , the end face of the cylindrical portion 11 is provided with a first protrusion 111. The first protrusion 111 surrounds the central axis of the cylindrical portion 11, and the first protrusion 111 is in sealed contact with the inner wall of the pump housing 200. By the contact between the first protrusion 111 and the inner wall of the pump housing 200, the contact area between the cylindrical portion 11 and the inner wall of the pump housing 200 can be reduced, thereby increasing the pressure between the cylindrical portion 11 and the inner wall of the pump housing 200 and enhancing the sealing contact effect between the cylindrical portion 11 and the inner wall of the pump housing 200. Optionally, the cross-section of the first protrusion 111 is semi-circular or triangular, which is beneficial to reducing the friction between the first protrusion 111 and the inner wall of the pump housing 200.

[0044] For the above-mentioned blade 2, please refer to Figure 1 and Figure 2, the blade 2 is in a rectangular planar shape and extends radially along the cylindrical part 11, so that the cavity formed between two adjacent blades 2 between the inner wall of the pump casing 200 and the outer peripheral surface of the cylindrical part 11 is fan-shaped.

[0045] In some embodiments, please refer to Figure 1 and Figure 2 , on the side of the first side 21 facing away from the second side 22, a second protrusion 211 is provided. The second protrusion 211 extends from the cylindrical part 11 to the third side 23, and the second protrusion 211 is in sealing contact with the inner wall of the pump casing 200. By the contact of the second protrusion 211 with the inner wall of the pump casing 200, the contact area between the blade 2 and the inner wall of the pump casing 200 can be reduced, thereby increasing the pressure between the blade 2 and the pump casing 200 and enhancing the sealing contact effect between the blade 2 and the inner wall of the pump casing 200. Optionally, the cross-section of the second protrusion 211 is semicircular or triangular, which is beneficial to reducing the friction between the second protrusion 211 and the inner wall of the pump casing 200. Further, the second protrusion 211 is connected to the first protrusion 111 to improve the problem that there is a gap between the connection part of the cylindrical part 11 and the blade 2 and the inner wall of the pump casing 200.

[0046] Similarly, please refer to Figure 1 and Figure 2 , on the side of the second side 22 facing away from the first side 21, a third protrusion 221 is provided. The third protrusion 221 extends from the cylindrical part 11 to the third side 23, and the third protrusion 221 is in sealing contact with the inner wall of the pump casing 200. By the contact of the third protrusion 221 with the inner wall of the pump casing 200, the contact area between the blade 2 and the inner wall of the pump casing 200 can be reduced, thereby increasing the pressure between the blade 2 and the pump casing 200 and enhancing the sealing contact effect between the blade 2 and the inner wall of the pump casing 200. Optionally, the cross-section of the third protrusion 221 is semicircular or triangular, which is beneficial to reducing the friction between the third protrusion 221 and the inner wall of the pump casing 200. Further, the third protrusion 221 is connected to the first protrusion 111 to improve the problem that there is a gap between the connection part of the cylindrical part 11 and the blade 2 and the inner wall of the pump casing 200.

[0047] In some embodiments, please refer to Figure 1 and Figure 2 , a bulged part 231 is provided on the third side 23. When the impeller 100 rotates, the bulged part 231 has a tendency to move away from the first axis, so that the contact between the bulged part 231 and the inner wall of the pump casing 200 is tighter, which is beneficial to enhancing the sealing contact effect between the blade 2 and the inner wall of the pump casing 200. It should be noted that in this embodiment, the blade 2 includes a body and the bulged part 231. The first side 21, the second side 22 and the third side 23 are all located on the body of the blade 2. The bulged part 231 is provided on the third side 23 and contacts the inner wall of the pump casing 200 instead of the third side 23.

[0048] Among them, please refer toFigure 1 and Figure 2 The enlarged portion 231 is cylindrical, and the central axis of the enlarged portion 231 is parallel to the first axis. The blade 2 is in sealed contact with the inner wall of the pump housing 200 through the outer peripheral surface of the enlarged portion 231. The enlarged portion 231 contacts the inner wall of the pump housing 200 through a curved surface, which is beneficial to reducing the friction force between the enlarged portion 231 and the inner wall of the pump housing 200. It can be understood that the end faces at both ends of the enlarged portion 231 also contact the inner wall of the pump housing 200, improving the problem of having a gap between the enlarged portion 231 and the inner wall of the pump housing 200.

[0049] In some embodiments, please refer to Figure 1 and Figure 2 and, a fourth protrusion 2311 is provided on the end face of the enlarged portion 231. The fourth protrusion 2311 extends from the third side 23 to contact the pump housing 200. It can be understood that the extension line of the first side 21 or the second side 22 coincides with the end face of the enlarged portion 231. Therefore, the fourth protrusion 2311 extending from the third side 23 means that one end of the fourth protrusion 2311 is connected to the first side 21 or the second side 22; the fourth protrusion 2311 extending to contact the pump housing 200 means that the fourth protrusion 2311 extends to the position farthest from the first axis on the end face of the enlarged portion 231, so that the fourth protrusion 2311 can form a complete seal between the end face of the enlarged portion 231 and the inner wall of the pump housing 200. On the basis of the seal, by the fourth protrusion 2311 contacting the inner wall of the pump housing 200, the contact area between the enlarged portion 231 and the inner wall of the pump housing 200 can be reduced, thereby increasing the pressure between the enlarged portion 231 and the pump housing 200 and enhancing the sealing contact effect between the enlarged portion 231 and the inner wall of the pump housing 200. Optionally, the cross-section of the fourth protrusion 2311 is semicircular or triangular, which is beneficial to reducing the friction force between the fourth protrusion 2311 and the inner wall of the pump housing 200. Further, the fourth protrusion 2311 is connected to the second protrusion 211 or the third protrusion 221 to improve the problem of having a gap between the connection portion of the enlarged portion 231 and the blade 2 body and the inner wall of the pump housing 200.

[0050] In some embodiments, please refer to Figure 1 and Figure 2 and, the fourth protrusion 2311 extends along the edge of the end face of the enlarged portion 231. That is, the fourth protrusion 2311 is annular, and the outer diameter of the fourth protrusion 2311 is equal to the outer diameter of the enlarged portion 231, which is beneficial to enhancing the stability of the enlarged portion 231 supported on the inner wall of the pump housing 200 and improving the problem that the enlarged portion 231 rotates radially around the cylindrical portion 11 during the rotation of the impeller 100, resulting in the distortion of the blade 2 and the sealing failure between the blade 2 and the inner wall of the pump housing 200.

[0051] In a second aspect, an embodiment of the present application provides a pump 1000. Please refer to Figure 3 and Figure 4, the pump 1000 includes a pump housing 200, a motor 300, and an impeller 100; the motor 300 is disposed in the pump housing 200, and at least part of the rotating shaft of the motor 300 is disposed within the pump housing 200; the impeller 100 is disposed within the pump housing 200 and connected to the rotating shaft. The motor 300 is directly mounted on the pump housing 200, and the impeller 100 is directly mounted on the rotating shaft, that is, the motor 300 directly drives the impeller 100, which is beneficial to reducing the complexity of the pump 1000, reducing the volume of the pump 1000, and enhancing the reliability of the pump 1000; and reducing the number of moving parts in the pump 1000 is beneficial to reducing the noise of the pump 1000, reducing the energy loss caused by friction, and improving the efficiency of the pump 1000. Optionally, the motor 300 is mounted on the pump housing 200 by screws, and the motor 300 is a servo motor 300.

[0052] For the above pump housing 200, please refer to Figure 3 and Figure 4 , the pump housing 200 includes a first housing 203 and a second housing 204. The first housing 203 is in the shape of a cylinder with an opening at one end. The second housing 204 is covered at the opening of the first housing 203. A first relief hole 2031 is provided on the side of the first housing 203 facing away from the second housing 204. The motor 300 is disposed on the side of the first housing 203 facing away from the second housing 204, and the rotating shaft of the motor 300 penetrates into the pump housing 200 through the first relief hole 2031. It can be understood that the inner diameter of the first relief hole 2031 is less than or equal to the inner diameter of the cylindrical part 11. Both ends of the cylindrical part 11 are in sealed contact with the first housing 203 and the second housing 204 respectively, so that the inside and outside of the cylindrical part 11 are isolated from each other, and the rotating shaft is connected to the connecting part 12 inside the cylindrical part 11. Thus, the motor 300 is isolated from the liquid or gas inside the pump housing 200, and the motor 300 does not need to be waterproof or sealed, which is beneficial to reducing the cost of the pump 1000. In addition, when the second housing 204 is severely worn, the second housing 204 can be replaced without replacing the entire pump housing 200, which is beneficial to reducing the cost of the pump 1000.

[0053] In some embodiments, please refer to Figure 3 and Figure 4, the pump 1000 further includes a sealing plate 400 disposed between the impeller 100 and the first housing 203. Both ends of the cylindrical portion 11 are in sealing contact with the sealing plate 400 and the second housing 204 respectively. The side of the sealing plate 400 facing away from the impeller 100 is in sealing contact with the first housing 203. The sealing plate 400 is provided with a second relief hole 401 corresponding to the first relief hole 2031. The rotating shaft of the motor 300 passes through the first relief hole 2031 and the second relief hole 401 to be connected to the connecting portion 12. The sealing plate 400 can have different thicknesses, so as to be adapted to impellers 100 with different thicknesses, and the sealing plate 400 can be replaced according to the wear condition of the impeller 100. For example, when the impeller 100 is severely worn and the sealing effect between the impeller 100 and the pump housing 200 is poor, a slightly thicker sealing plate 400 can be replaced to extend the service life of the impeller 100. In addition, when the sealing plate 400 is severely worn, the sealing plate 400 can be replaced without replacing the first housing 203 with a higher cost, which is beneficial to reducing the cost of the pump 1000.

[0054] Further, please refer to Figure 3 and Figure 4 , the pump 1000 further includes a sealing ring 500 disposed between the sealing plate 400 and the first housing 203, which is beneficial to enhancing the sealing effect between the sealing plate 400 and the first housing 203.

[0055] In the impeller 100 and the pump 1000 according to the embodiments of the present application, a cavity is formed by enclosing between two adjacent blades 2, so as to control the flow rate of the pump 1000, and compared with the hose pump 1000, the service life of the pump 1000 can be extended. The impeller 100 is directly connected to the rotating shaft of the motor 300, that is, the motor 300 directly drives the impeller 100, which is beneficial to reducing the complexity of the pump 1000, reducing the volume of the pump 1000 and enhancing the reliability of the pump 1000, reducing the noise of the pump 1000, and improving the efficiency of the pump 1000. The first protrusion 111, the second protrusion 211, the third protrusion 221 and the fourth protrusion 2311 are beneficial to enhancing the sealing contact effect between the impeller 100 and the inner wall of the pump housing 200 and reducing the friction force. The cylindrical bulging portion 231 is beneficial to enhancing the sealing contact effect between the blade 2 and the inner wall of the pump housing 200 and reducing the friction force between the bulging portion 231 and the inner wall of the pump housing 200. The sealing plate 400 can have different thicknesses, so as to be adapted to impellers 100 with different thicknesses, and the sealing plate 400 can be replaced according to the wear condition of the impeller 100.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; under the idea of the present application, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order, and there are many other variations in different aspects of the present application as described above. For the sake of brevity, they are not provided in detail; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present application.

Claims

1. An impeller, characterized in that, include: A connecting member, arranged in the pump housing so as to rotate around a first axis, the connecting member comprising a cylindrical portion, the central axis of the cylindrical portion coincides with the first axis, and both ends of the cylindrical portion are in sealing contact with the inner wall of the pump housing; Blades, a plurality of the blades are disposed on the outer peripheral surface of the barrel portion, and the plurality of the blades are spaced apart around the first axis; Among them, along the direction parallel to the first axis, the blade has a first edge and a second edge arranged opposite to each other, and the blade has a third edge arranged opposite to the connecting member, and the two ends of the third edge are respectively connected to the first edge and the second edge; the blade is in sealing contact with the inner wall of the pump casing through the first edge, the second edge and the third edge to form a cavity between two adjacent blades.

2. The impeller according to claim 1, wherein, A first protrusion is disposed on the end surface of the cylindrical portion. The first protrusion surrounds the central axis of the cylindrical portion, and the first protrusion is in sealing contact with the inner wall of the pump housing.

3. The impeller according to claim 1, characterized in that: A second protrusion is provided on a side of the first side away from the second side, the second protrusion extends from the cylinder portion to the third side, and the second protrusion is in sealing contact with the inner wall of the pump housing; And / or, a third protrusion is provided on a side of the second side facing away from the first side, the third protrusion extends from the cylinder portion to the third side, and the third protrusion is in sealing contact with the inner wall of the pump housing.

4. The impeller according to claim 1, characterized in that, The third side is provided with an enlarged portion.

5. The impeller according to claim 4, characterized in that, The enlarged portion is cylindrical, the central axis of the enlarged portion is parallel to the first axis, and the blades are in sealing contact with the inner wall of the pump housing through the outer peripheral surface of the enlarged portion.

6. The impeller according to claim 5, wherein The end surface of the enlarged portion is provided with a fourth protrusion, and the fourth protrusion extends from the third side to contact the pump housing.

7. The impeller according to claim 6, characterized in that, The fourth protrusion extends along an edge of the end surface of the enlarged portion.

8. The impeller according to claim 1, wherein, The connecting member comprises a connecting portion, the connecting portion is arranged on the inner wall of the barrel portion, the connecting portion is provided with a connecting hole, and the connecting hole is used to connect with the motor; Wherein, along a direction parallel to the first axis, the connecting portion is recessed in the cylindrical portion.

9. A pump, characterized in that, include: Pump housing; The impeller according to any one of claims 1 to 8, wherein the impeller is arranged in the pump casing; A motor is disposed in the pump housing, a rotating shaft of the motor is at least partially disposed in the pump housing, and the rotating shaft of the motor is connected to a connecting hole of the impeller so that the motor directly drives the impeller.

10. The pump according to claim 9, characterized in that, The pump casing includes a first shell and a second shell. The first shell is cylindrical with an opening at one end. The second shell cover is arranged at the opening of the first shell. A first clearance hole is arranged on the side of the first shell facing away from the second shell. The motor is arranged on the side of the first shell facing away from the second shell. The rotating shaft of the motor penetrates into the pump casing through the first clearance hole.

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