Composite impeller structure of centrifugal pump

Abstract

This utility model discloses a composite impeller structure for a centrifugal pump, specifically relating to the field of centrifugal pump technology. It includes an impeller plate and an impeller sleeve, with the rear end of the impeller sleeve fixedly connected to the impeller plate. The impeller plate is provided with multiple impeller blade assemblies, each comprising an impeller blade body, inserts, a first fixing bolt, a first washer, two locking rods, a locking plate, and a gasket. The front ends of the inserts are fixedly connected to the impeller blade bodies, and the rear ends of the inserts extend into the impeller plate. This utility model fixes the impeller blade body to the impeller plate by rotating the first fixing bolt and extending it into the inserts. The two locking rods limit the movement of the impeller blade body, and the locking plate and impeller sleeve further limit its movement. Similarly, different numbers of impeller blade bodies can be installed according to requirements. The operation is simple, and the number of impeller blade bodies can be easily adjusted as needed.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal pump technology, and more specifically, to a composite impeller structure for centrifugal pumps. Background Technology

[0002] Centrifugal pumps are one of the most commonly used fluid transport devices in industrial, agricultural, and municipal fields. The core of the pump is to generate centrifugal force through impeller rotation, thereby converting mechanical energy into the pressure energy and kinetic energy of the fluid to achieve liquid transport. Centrifugal pumps are widely used in municipal, industrial, agricultural, and civil fields due to their simple structure, high efficiency, and convenient flow rate adjustment.

[0003] A search revealed that Chinese Patent CN221033266U discloses a centrifugal pump impeller anti-loosening connection structure. This utility model improves upon the original structure by adding a locking bolt to the impeller's side away from the power output shaft. The bolt's shank passes through the impeller and is threaded to the power output shaft, while its head is tightened and abuts against the impeller's side away from the power output shaft. When the power output shaft rotates forward, the impeller rotates synchronously with it and tends to tighten, eliminating the risk of it reversing and falling off the shaft. Furthermore, the locking bolt, located at the center of rotation, has a small radial dimension and low inertial torque, and is subjected to torque during assembly, thus preventing it from loosening.

[0004] When the above-mentioned impeller is in use, the impeller blades and the impeller frame are integrally formed, which makes it inconvenient to adjust the number of impeller blades according to the needs. Generally, the more blades there are, the more energy conversion of the fluid in the impeller is, and the higher the head is, but the flow rate is relatively limited; the fewer blades there are, the lower the fluid flow resistance is, and the larger the flow rate is, but the head will be reduced. It is difficult to adjust the number of blades to make the pump operate in the high-efficiency range. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a centrifugal pump composite impeller structure, which aims to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a centrifugal pump composite impeller structure, including an impeller plate and an impeller sleeve, wherein the rear end of the impeller sleeve is fixedly connected to the impeller plate, and the impeller plate is provided with multiple impeller blade assemblies, each of the multiple impeller blade assemblies including an impeller blade body, a post, a first fixing bolt, a first washer, two clamping rods, a clamping plate, and a washer, the front ends of the multiple posts are fixedly connected to the impeller blade body, and the rear ends of the multiple posts extend into the impeller plate, the front ends of the multiple first fixing bolts penetrate the impeller plate and extend into the multiple posts respectively, and the multiple first fixing bolts are threadedly connected to the multiple posts respectively, and the multiple first washers are fixedly sleeved on the multiple first fixing bolts respectively, and the front sides of the multiple first washers are in contact with the impeller plate.

[0007] Furthermore, the front ends of the plurality of clamps are fixedly connected to the impeller blade body, and the rear ends of the plurality of clamps penetrate the impeller plate.

[0008] Furthermore, one side of each of the multiple card plates is fixedly connected to a multiple impeller blade body, and the outer side of each of the multiple card plates is in contact with the impeller sleeve.

[0009] Furthermore, the front sides of the plurality of gaskets are fixedly embedded inside the plurality of impeller blade bodies, and the rear sides of the plurality of gaskets are in contact with the impeller plate.

[0010] It can be seen that the above technical solution can improve the stability between the impeller blade body and the impeller plate.

[0011] Furthermore, a mounting sleeve is fixedly connected to the rear side of the impeller plate, and a power output shaft body is provided on the mounting sleeve. The front end of the power output shaft body passes through the impeller plate and extends into the impeller sleeve. A fastening assembly is provided on the power output shaft body, and the fastening assembly includes a second fixing bolt, a second washer, a locking bolt, and two third washers.

[0012] Furthermore, the rear side of the second fixing bolt passes through the impeller sleeve and is threadedly connected to the power output shaft body, and the second washer is movably sleeved on the second fixing bolt, with the rear side of the second washer in contact with the impeller sleeve.

[0013] It can be seen that the above technical solution is designed to facilitate the fixing of the power output shaft body and the impeller sleeve.

[0014] Furthermore, the power output shaft body is fixed to the mounting sleeve by locking bolts, and the two third washers are movably sleeved on the bolts, with the opposing sides of the two third washers in contact with the mounting sleeve.

[0015] It can be seen that the above technical solution facilitates the fixing of the power output shaft body and the mounting sleeve.

[0016] The technical effects and advantages of this utility model are as follows: 1. This utility model fixes the impeller blade body to the impeller plate by placing the impeller blade body on the front side of the impeller plate and then rotating the first fixing bolt to extend it into the insert post. The impeller blade body can be limited by two clamping rods, and the impeller blade body can be further limited by the cooperation of the clamping plate and the impeller sleeve. Similarly, different numbers of impeller blade bodies can be installed according to the needs. The operation is simple and the number of impeller blade bodies can be adjusted according to the needs. 2. This utility model fixes the power output shaft body to the impeller plate by inserting the power output shaft body into the impeller plate, rotating the second fixing bolt and extending it into the power output shaft body, and fixing the power output shaft body to the mounting sleeve by tightening the locking bolt. This makes the power output shaft body fixed to the impeller plate. The structure is simple and effectively improves the stability between the impeller plate and the power output shaft body. Attached Figure Description

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a perspective view of the present invention from a downward angle; Figure 3 This is a schematic diagram of the assembly structure of the impeller plate and impeller assembly of this utility model; Figure 4 This is a schematic diagram of the assembly structure of the power output shaft body and fastening components of this utility model; Figure 5 This is a schematic diagram of the impeller blade assembly structure of this utility model.

[0019] In the diagram: 1. Impeller plate; 2. Impeller sleeve; 3. Impeller blade assembly; 4. Power output shaft body; 5. Fastening assembly; 6. Mounting sleeve; 301. Impeller blade body; 302. Insert post; 303. First fixing bolt; 304. First washer; 305. Clamping rod; 306. Clamping plate; 307. Washer; 501. Second fixing bolt; 502. Second washer; 503. Locking bolt; 504. Third washer. Detailed Implementation

[0020] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] Refer to the instruction manual appendix Figure 1-5 The centrifugal pump composite impeller structure of this embodiment includes an impeller plate 1 and an impeller sleeve 2, and the rear end of the impeller sleeve 2 is fixedly connected to the impeller plate 1. Multiple impeller blade assemblies 3 are provided on the impeller plate 1. Each of the multiple impeller blade assemblies 3 includes an impeller blade body 301, a plug 302, a first fixing bolt 303, a first washer 304, two clamping rods 305, a clamping plate 306, and a washer 307. The front ends of the multiple plugs 302 are fixedly connected to the impeller blade body 301, and the rear ends of the multiple plugs 302 extend into the impeller plate 1. The front ends of the multiple first fixing bolts 303 penetrate the impeller plate 1 and extend into the multiple plugs 302 respectively, and the multiple first fixing bolts 303 are threadedly connected to the multiple plugs 302 respectively. The multiple first washer 304 are fixedly sleeved on the multiple first fixing bolts 303, and the front side of the multiple first washer 304 is in contact with the impeller plate 1.

[0022] Furthermore, the front ends of multiple clamping rods 305 are fixedly connected to the impeller blade body 301, and the rear ends of multiple clamping rods 305 penetrate the impeller plate 1. One side of multiple clamping plates 306 is fixedly connected to multiple impeller blade bodies 301, and the outer sides of multiple clamping plates 306 are in contact with the impeller sleeve 2. The front sides of multiple gaskets 307 are fixedly embedded in the multiple impeller blade bodies 301, and the rear sides of multiple gaskets 307 are in contact with the impeller plate 1.

[0023] Furthermore, a mounting sleeve 6 is fixedly connected to the rear side of the impeller plate 1. A power output shaft body 4 is provided on the mounting sleeve 6, and the front end of the power output shaft body 4 passes through the impeller plate 1 and extends into the impeller sleeve 2. A fastening assembly 5 is provided on the power output shaft body 4. The fastening assembly 5 includes a second fixing bolt 501, a second washer 502, a locking bolt 503, and two third washer rings 504. The rear side of the second fixing bolt 501 passes through the impeller sleeve 2 and is threadedly connected to the power output shaft body 4. The second washer ring 502 is movably sleeved on the second fixing bolt 501, and the rear side of the second washer ring 502 is in contact with the impeller sleeve 2. The power output shaft body 4 and the mounting sleeve 6 are fixed together by the locking bolt 503. Both third washer rings 504 are movably sleeved on the bolt 503, and the opposite sides of the two third washer rings 504 are in contact with the mounting sleeve 6.

[0024] The power output shaft body 4 is inserted into the impeller plate 1, with the front end of the power output shaft body 4 contacting the impeller sleeve 2. The second fixing bolt 501 is rotated and extended into the power output shaft body 4, thereby fixing the power output shaft body 4 to the impeller sleeve 2, and further fixing the power output shaft body 4 to the impeller plate 1. The second washer 502 can improve the stability between the second fixing bolt 501, the impeller sleeve 2, and the power output shaft body 4. The locking bolt 503 fixes the power output shaft body 4 to the mounting sleeve 6, thereby fixing the power output shaft body 4 to the impeller plate 1. The third washer 504 can improve the fixation between the power output shaft body 4, the mounting sleeve 6, and the locking bolt 503. The structure is simple and effectively improves the stability between the impeller plate 1 and the power output shaft body 4.

[0025] The usage method of this embodiment is as follows: In use, the impeller blade body 301 is placed on the front side of the impeller plate 1, and the rear end of the insert post 302 is inserted into the impeller plate 1. Then, the first fixing bolt 303 is rotated and extended into the insert post 302, thereby fixing the insert post 302 to the impeller plate 1, and thus fixing the impeller blade body 301 to the impeller plate 1. The first washer ring 304 can improve the stability between the first fixing bolt 303, the insert post 302, and the impeller plate 1. At the same time, both locking rods 305 are inserted into the impeller plate 1, and the two locking rods 305 can be used to adjust the impeller blade body 301. The impeller blade body 301 is limited, and the clamping plate 306 is inserted into the impeller sleeve 2. The clamping plate 306 and the impeller sleeve 2 cooperate to further limit the impeller blade body 301. The rear side of the gasket 307 contacts the impeller plate 1, thereby improving the stability between the impeller blade body 301 and the impeller plate 1. Similarly, different numbers of impeller blade bodies 301 can be installed according to the needs. The operation is simple and the number of impeller blade bodies 301 can be adjusted according to the needs. Similarly, the impeller blade bodies 301 can be disassembled and replaced.

[0026] All contents not described in detail in the specification are existing technologies known to those skilled in the art. The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A centrifugal pump composite impeller structure, comprising an impeller plate (1) and an impeller sleeve (2), wherein the rear end of the impeller sleeve (2) is fixedly connected to the impeller plate (1), characterized in that: The impeller plate (1) is provided with a plurality of impeller blade assemblies (3). Each of the plurality of impeller blade assemblies (3) includes an impeller blade body (301), a post (302), a first fixing bolt (303), a first washer (304), two clamping rods (305), a clamping plate (306), and a washer (307). The front ends of the plurality of posts (302) are fixedly connected to the impeller blade body (301), and the rear ends of the plurality of posts (302) extend into the impeller plate (1). The front ends of the plurality of first fixing bolts (303) penetrate the impeller plate (1) and extend into the plurality of posts (302), and the plurality of first fixing bolts (303) are threadedly connected to the plurality of posts (302). The plurality of first washer (304) are fixedly sleeved on the plurality of first fixing bolts (303), and the front side of the plurality of first washer (304) is in contact with the impeller plate (1).

2. The centrifugal pump composite impeller structure according to claim 1, characterized in that: The front ends of the plurality of clamps (305) are fixedly connected to the impeller blade body (301), and the rear ends of the plurality of clamps (305) penetrate the impeller plate (1).

3. The centrifugal pump composite impeller structure according to claim 1, characterized in that: One side of each of the multiple clamping plates (306) is fixedly connected to a multiple impeller blade body (301), and the outer side of each of the multiple clamping plates (306) is in contact with the impeller sleeve (2).

4. The centrifugal pump composite impeller structure according to claim 1, characterized in that: The front sides of the multiple gaskets (307) are fixedly embedded inside the multiple impeller blade bodies (301), and the rear sides of the multiple gaskets (307) are in contact with the impeller plate (1).

5. The centrifugal pump composite impeller structure according to claim 1, characterized in that: The rear side of the impeller plate (1) is fixedly connected to the mounting sleeve (6), and the mounting sleeve (6) is provided with the power output shaft body (4). The front end of the power output shaft body (4) passes through the impeller plate (1) and extends into the impeller sleeve (2). The power output shaft body (4) is provided with a fastening assembly (5). The fastening assembly (5) includes a second fixing bolt (501), a second washer (502), a locking bolt (503), and two third washers (504).

6. The centrifugal pump composite impeller structure according to claim 5, characterized in that: The rear side of the second fixing bolt (501) passes through the impeller sleeve (2) and is threadedly connected to the power output shaft body (4). The second washer (502) is movably sleeved on the second fixing bolt (501), and the rear side of the second washer (502) is in contact with the impeller sleeve (2).

7. The centrifugal pump composite impeller structure according to claim 5, characterized in that: The power output shaft body (4) and the mounting sleeve (6) are fixed together by locking bolts (503). The two third washers (504) are movably sleeved on the bolts (503), and the two third washers (504) are in contact with the mounting sleeve (6) on opposite sides.

Images