Impeller fastener, conveying device and boosting device

Abstract

The present invention relates to an impeller fastener, a conveying device and a supercharging device. The impeller fastener comprises a fastening body, a plurality of lugs extending from the edge of the fastening body, the fastening body being relatively fixed to the impeller and being able to rotate synchronously with the impeller, the extension direction of the lugs and the fastening direction of the fastening body to the impeller being opposite to the rotation direction of the impeller; the conveying device and the supercharging device both comprise an impeller fastener. When the impeller rotates, it can drive the fluid around it to flow along the rotation direction of the impeller. Because the extension direction of the lugs and the fastening direction of the fastening body to the impeller are opposite to the rotation direction of the impeller, when the fluid flows, a force opposite to the rotation direction of the impeller is applied to the lugs, so that the movement trend of the fastening body is opposite to the rotation direction of the impeller, and the fastening body rotates in a direction that is more fastened to the impeller, thereby increasing the fastening strength of the fastening body to the impeller, and preventing the impeller fastener from loosening, thereby affecting the normal use of the impeller and the conveying efficiency of the fluid.

Description

Technical Field

[0001] The present invention relates to the technical field of fluid conveying or pressurizing machinery, and in particular to an impeller fastener, a conveying device and a pressurizing device. Background Art

[0002] As an indispensable means of transportation in industrial production, fluid transportation has been widely used in the fields of chemical industry, petrochemical industry, textile industry, coating industry, etc. Impeller is an important component of fluid transportation. The high-speed rotating impeller applies pressure to the fluid, allowing the fluid to flow and realize fluid transportation.

[0003] Usually, the impeller is fixed to the shaft by a nut, and the impeller is driven to rotate at high speed by the rotation of the shaft. In actual use, the nut often becomes loose and falls off, affecting the stable operation of the conveying machinery. The impeller may also become loose and hit the conveying machinery, causing damage to the conveying machinery. Summary of the invention

[0004] The purpose of the present invention is to provide an impeller fastener, a conveying device and a pressurizing device to overcome the defect that the impeller is easy to loosen and affects the conveying efficiency.

[0005] The technical solution adopted by the present invention to solve the above technical problems is:

[0006] An impeller fastener comprises a fastening body, a plurality of lugs extending from the edge of the fastening body, the fastening body being relatively fixed to the impeller and being able to rotate synchronously with the impeller, the extension direction of the lugs and the fastening direction of the fastening body to the impeller being opposite to the rotation direction of the impeller.

[0007] In a preferred embodiment, the cross section of the fastening body is a polygon, and the lug extends based on the connection between two adjacent sides of the fastening body.

[0008] In a preferred embodiment, the side edge of the fastening body is flush with the side edge of the lug connected to the side edge.

[0009] In a preferred embodiment, the cross section of the fastening body is circular, and the lugs are evenly distributed along the edge of the fastening body.

[0010] In a preferred embodiment, the cross section of the lug is triangular or quadrilateral.

[0011] In a preferred embodiment, the lug is a plate extending from an edge of the fastening body.

[0012] In a preferred embodiment, a recessed guide groove is provided at the center of the fastening body.

[0013] In a preferred embodiment, a locking section is provided inside the fastening body, and a fastening thread is provided on the surface of the locking section.

[0014] The present invention further provides a conveying device, comprising the above-mentioned impeller fastener and an impeller, wherein the impeller fastener is mounted on the end surface of the impeller.

[0015] The present invention also provides a pressure boosting device, comprising the above-mentioned conveying device.

[0016] The present invention has at least the following beneficial effects:

[0017] When the impeller rotates, it can drive the fluid around it to flow along the rotation direction of the impeller. Because the extension direction of the lug and the fastening direction of the fastening body to the impeller are opposite to the rotation direction of the impeller, the fluid applies a force opposite to the rotation direction of the impeller to the lug when it flows, so that the movement trend of the fastening body is opposite to the rotation direction of the impeller. The fastening body rotates in a direction that tightens the impeller more, thereby increasing the fastening strength of the fastening body to the impeller and preventing the impeller fasteners from loosening, which would affect the normal use of the impeller and the fluid delivery efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 is a schematic structural diagram of a first embodiment of an impeller fastener;

[0020] Figure 2 It is a schematic diagram of the structure of the impeller fastener in use;

[0021] Figure 3 is a cross-sectional schematic diagram of a first embodiment of an impeller fastener;

[0022] Figure 4 is a schematic structural diagram of a second embodiment of an impeller fastener;

[0023] Figure 5 Schematic diagram of the structure of the impeller fastener when working in the second embodiment.

[0024] Figure 6 1 is a schematic structural diagram of a third embodiment of an impeller fastener. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the present invention can be combined interchangeably without conflicting with each other.

[0026] First embodiment

[0027] Reference Figures 1 to 3 The impeller fastener in this embodiment includes a fastening body 10, and a plurality of lugs 20 extend from the edge of the fastening body 10. The fastening body 10 is used to fix the impeller 100. The fastening body 10 can be fixed at the end surface of the impeller 100 to achieve relative fixation between the fastening body 10 and the impeller 100, and the fastening body 10 can rotate synchronously with the rotation of the impeller 100. When the impeller 100 rotates, it can drive the fluid around it to move along the rotation direction of the impeller 100. Because the extension direction of the lug 20 and the fastening direction of the fastening body 10 to the impeller 100 are opposite to the rotation direction of the impeller 100, the fluid contacts the lug 20 when moving and applies a force opposite to the rotation direction of the impeller 100 to the lug 20, so that the rotation trend of the fastening body 10 is opposite to the rotation direction of the impeller 100, and the fastening body 10 is subjected to the force given by the fluid in the fastening direction, thereby increasing the fastening strength of the fastening body 10 to the impeller 100, avoiding the reverse loosening of the impeller fasteners, affecting the normal use of the impeller and the fluid delivery efficiency.

[0028] Specifically, refer to Figure 2 The impeller fastener is fixed on the end face of the impeller 100. The impeller 100 rotates counterclockwise, and the fastening body 10 fastens the impeller 100 in a clockwise direction. The lug 20 located at the edge of the fastening body 10 has the same fastening direction as the fastening body 10 (the extension direction of the lug 20 is opposite to the rotation direction of the impeller 100, but it is not strictly opposite, and a certain angle or deviation is allowed). The impeller 100 rotates counterclockwise, driving the fluid around it to flow in the counterclockwise direction at the same time. The side of the fastening body 10 and the side of the lug 20 are in contact with the fluid and receive the force given by the fluid in the opposite direction of the fluid rotation. The direction of the force is the same as the fastening direction of the fastening body 10 on the impeller, so that the fastening body 10 is subjected to a force tending to be tightened, so that the fastening body 10 will not loosen in the reverse direction.

[0029] The cross-section of the fastening body 10 can be set to a polygon, such as a triangle, a rectangle, a hexagon, etc. The cross-section of the fastening body 10 in this embodiment is set to a regular hexagon, and the lug 20 extends based on the connection between two adjacent sides of the fastening body 10, that is, six lugs 20 are included in this embodiment, and the lugs 20 are evenly distributed on the edge of the fastening body 10, so that the impeller fastener is stable when subjected to the force applied by the fluid during use.

[0030] The connection between two adjacent side edges of the fastening body 10 and the side edge of the lug 20 is flush with one of the two side edges, so as to increase the contact surface between the impeller fastener and the fluid when the impeller rotates, thereby increasing the resistance strength of the fluid to the impeller.

[0031] The cross section of the lug 20 can be set to a polygon, such as a triangle, a rectangle, a trapezoid, etc. In this embodiment, the cross section of the lug 20 is set to a triangle, one side of the lug 20 is flush with one side of the fastening body 10 connected to the lug 20, and the other side of the lug 20 is perpendicular to the other side connected to the side of the fastening body 10, and the lug 20 is located at the connection between the two sides of the fastening body 10.

[0032] Reference Figure 3 In this embodiment, a locking section 11 is further provided inside the fastening body 10. A fastening thread is provided on the surface of the locking section 11. The fastening thread is used to cooperate with a component for fixing the impeller to fix the impeller, and the installation is relatively convenient.

[0033] The locking section 11 is arranged at the center of the fastening body 10. A guide groove 12 is also provided inside the fastening body 10. The guide groove 12 is recessed inward based on the top of the fastening body 10. The guide groove 12 can be connected to the locking section 11 or not. A simple installation tool is inserted into the guide groove 12. The fastening body 10 can be fixed to the impeller by rotating the installation tool.

[0034] The cross section of the guide groove 12 can be set to be a straight, cross or hexagonal shape, and the impeller fastener can be installed by using a straight spanner, a cross spanner or an inner hexagon spanner. The guide groove 12 in this embodiment is set to be a hexagon.

[0035] The fluid can be gas or liquid, such as air, water, acid and alkali liquid, emulsion, chemical agent, or liquid metal, etc. The lug 20 is integrally formed with the fastening body 10 or fixed by welding. The fastening body 10 can be selected as a nut and reprocessed on the basis of the nut to reduce the production cost of the impeller fastener.

[0036] Second embodiment

[0037] Reference Figure 4, the present embodiment is different from the first embodiment in that the lug 20 in the present embodiment is provided as a sheet, and the sheet extends outward based on the side of the fastening body 10, further simplifying the structure of the lug 20. The lugs 20 in the present embodiment are provided in three pieces, evenly distributed along the edge of the fastening body 10, and extend based on the side of the fastening body 10, and are flush with the side of the fastening body 10. Of course, the number of lugs 20 can be appropriately increased, such as, each side of the fastening body 10 is connected with a lug 20; the lug 20 is not necessarily completely flush with the side of the fastening body 10, and can be bent to form a certain angle, such as perpendicular to the side of the fastening body 10, to increase the strength of the force applied by the fluid to the lug 20.

[0038] The sheet body is configured as a rigid structure to ensure the effectiveness of motion transmission between the fastening body 10 and the lug 20, so that the resistance exerted by the fluid on the lug 20 can be quickly and efficiently transmitted to the fastening body 10, and the fastening body 10 has a tighter fastening tendency, thereby improving the fastening strength between the fastening body 10 and the impeller 100.

[0039] Figure 5 This is a schematic diagram of the structure of the blade fastener in this embodiment when it is working. During the counterclockwise rotation of the impeller 100, the fluid follows the flow of the impeller 100, and the fastening body 10 rotates with the impeller 100 at the same time. The fluid applies a force to the fastening body 10 and the lug 20 to prevent the counterclockwise rotation, so that the fastening body 10 has a tendency to rotate in a more tightening direction, thereby strengthening the fixing strength between the fastening body 10 and the impeller and preventing the impeller fastener from falling off.

[0040] Third embodiment

[0041] Reference Figure 6 The present embodiment is different from the first embodiment in that the cross section of the fastening body 10 is set to be circular, and the lugs 20 are evenly distributed based on the edge of the fastening body 10 and extend outward, so that the lugs 20 can receive the force applied by the fluid. In addition, since the fastening body 10 is circular, the processing is more convenient, which improves the production efficiency of the impeller fastening device.

[0042] The present invention also provides a conveying device, which includes the above-mentioned impeller fastener, and also includes an impeller 100 and a rotating shaft for driving the impeller 100 to rotate. The impeller fastener is fixed to the end of the impeller 100, and the rotating shaft drives the impeller 100 to rotate, so that the impeller fastener rotates synchronously with the impeller 100. The impeller 100 realizes the conveyance of the fluid during the rotation process, and the fluid applies a force to the impeller fastener to hinder its rotation, thereby increasing the fastening strength between the impeller fastener and the impeller.

[0043] The impeller 100 is also provided with blades, the bending direction of the blades is the same as the extension direction of the lug 20, ensuring that the reverse direction of the fluid flow is opposite to the extension direction of the lug 20 and exerting a force on the lug 20 to prevent it from rotating in the rotation direction of the impeller. The conveying device can be a water pump, a centrifugal pump, a steam turbine, or other equipment suitable for fluid conveying.

[0044] The present invention also provides a supercharging device, which includes the above-mentioned conveying device, and the impeller fastener is fixed to the end of the impeller 100. When the rotating shaft drives the impeller 100 to rotate, the fluid flows around the blades 100 and does work on the blades. The blades 100 apply a reaction force to the fluid, so that the fluid obtains energy and flows out of the impeller 100, thereby increasing the kinetic energy and pressure energy of the liquid. The impeller fastener rotates with the rotation of the impeller, and the fluid applies a force to the impeller fastener that hinders its rotation, thereby increasing the fastening strength between the impeller 100 and the impeller fastener.

[0045] The boosting device may be a boosting pump, a self-priming pump or other equipment suitable for fluid pressurization.

[0046] The above is a specific description of the preferred embodiments of the present invention, but the present invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An impeller fastener, characterized in that: The invention comprises a fastening body, which is a nut. A plurality of lugs are extended from the edge of the fastening body. The fastening body is relatively fixed to the impeller and can rotate synchronously with the impeller. The extension direction of the lug and the fastening direction of the fastening body to the impeller are opposite to the rotation direction of the impeller. The cross-section of the fastening body is a polygon. The lug is extended based on the connection between two adjacent side edges of the fastening body. The side edge of the fastening body is flush with the side edge of the lug connected to the side edge. A recessed guide groove is provided at the center of the fastening body. The guide groove is recessed inwardly based on the top end of the fastening body. The guide groove is used for inserting an installation tool. A locking section is provided inside the fastening body. A fastening thread is provided on the surface of the locking section. The fastening body is prismatic. The cross-section of the lug is triangular or quadrilateral.

2. A conveying device, characterized in that: The impeller fastener according to claim 1 also includes an impeller, wherein the impeller fastener is mounted on the end surface of the impeller.

3. A boosting device, characterized in that: Comprising the conveying device according to claim 2.

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