CN-224209871-U - Screw impeller assembly and disassembly tools

Abstract

The utility model relates to a screw impeller dismounting tool, which belongs to the field of mechanical equipment overhaul tools, and comprises a wrenching hub seat, a spinning slurry piece (2) and a polygonal cylinder body (14), wherein the wrenching hub seat comprises a base (1) and a sleeve (10), the base (1), the sleeve (10) and the polygonal cylinder body (14) are sequentially connected from right to left, a shaft hole communicated with the sleeve (10) and the polygonal cylinder body (14) is formed in the base (1), the spinning slurry piece (2) is detachably connected with the base (1), and the screw impeller, especially a closed screw impeller, can be safely dismounted, is not easy to damage or damage the impeller, has the characteristics of compact structure, convenience in mounting and simplicity in operation, and can greatly improve the mounting and dismounting safety of the screw impeller and effectively avoid damage caused by overhaul.

Inventors

• Tao qinghua
• ZHOU ZHENGBO
• ZHANG DIANBIN

Assignees

• 云南驰宏资源综合利用有限公司

Dates

Publication Date

20260508

Application Date

20250529

Claims (6)

1. 1. The screw impeller dismounting tool is characterized by comprising a spanner hub, spinning slurry pieces (2) and a polygonal cylinder body (14), wherein the spanner hub comprises a base (1) and a sleeve (10), the base (1), the sleeve (10) and the polygonal cylinder body (14) are sequentially connected from right to left, a shaft hole communicated with the sleeve (10) and the polygonal cylinder body (14) is formed in the base (1), and the spinning slurry pieces (2) are detachably connected with the base (1).
2. 2. The screw impeller dismounting tool according to claim 1 is characterized in that slurry sheet mounting clamping grooves (11) which are uniformly distributed along the circumferential direction are formed in the left side end face of the base (1), positioning threaded holes (12) are formed in the slurry sheet mounting clamping groove areas, concave tables (21) which are matched with the slurry sheet mounting clamping grooves (11) and the base (1) are formed in the spinning slurry sheets (2), waist-shaped holes (22) are formed in the concave tables (21), and the spinning slurry sheets (2) are connected with the base (1) through positioning screws (5).
3. 3. The screw impeller dismounting tool according to claim 2 is characterized by further comprising a locking chuck (3), wherein a locking threaded hole (13) is further formed in the base (1), the locking threaded hole (13) is formed in a region where a pulp sheet mounting clamping groove (11) is formed, the locking chuck (3) is of a flange plate structure, a concave table (21) of the spinning pulp sheet (2) is clamped between the locking chuck (3) and the base (1) through a positioning screw (5) and a locking bolt (7), the positioning screw (5) is connected with the positioning threaded hole (12), and the locking bolt (7) is connected with the locking threaded hole (13).
4. 4. A screw impeller assembly and disassembly tool according to claim 2 or 3, wherein the positioning screw (5) is of a stud structure and is provided with a compression nut (6).
5. 5. The screw impeller assembly and disassembly tool according to claim 1, further comprising a wrench (4), wherein the wrench (4) is mated with the polygonal cylinder (14).
6. 6. The tool of claim 1, wherein the base, sleeve and polygonal cylinder are integrally constructed or welded.

Description

Screw impeller assembly and disassembly tools Technical Field The utility model belongs to the field of mechanical equipment maintenance tools, and particularly relates to a screw impeller dismounting tool. Background As a liquid medium conveying device, centrifugal pumps are widely used in industrial production, and particularly in the chemical production industry, centrifugal pumps are an indispensable important device. The working principle is that centrifugal force generated by the impeller rotating at high speed is utilized to apply work to the conveying medium to enable the liquid medium to flow, so that the conveying of the liquid medium is realized. The centrifugal pump mainly comprises parts such as a pump shell, an impeller, a main shaft, a pump cover, a bearing, a sealing piece, an intermediate support, a suspension component and the like. The impeller is an important part of the centrifugal pump and bears the important function of energizing the work of the medium to be conveyed so as to realize the medium conveyance. According to the different structural forms, the impellers are divided into an open impeller, a semi-open impeller and a closed impeller, and according to the different installation modes with the main shaft, the impellers are divided into a key groove impeller and a screw impeller. By virtue of the advantages of high energization, high efficiency, high anti-loosening performance and the like, the closed thread impeller is widely applied to the field of medium conveying with low solid particle content, such as high rotating speed, high pressure, high lift, high flow and the like; The closed type screw impeller, as the name implies, is an impeller which is closed and assembled with a main shaft by screw connection and provided with a wheel disc, blades and a cover plate. The screw thread of screw thread impeller is usually left-handed screw, and the screw thread is revolved to and is turned to just opposite with the main shaft promptly, if take place main shaft and impeller relative motion because of the resistance is too big like this in the water pump operation in-process, the impeller can screw up more, can not produce impeller loosening or drop phenomenon, can effectively avoid the emergence of water pump trouble. Although the screw impeller has strong anti-loosening capability and high installation reliability, the maintenance is very inconvenient, the impeller is very compact in main shaft matching after operation, the impeller is very difficult to disassemble, a practical and effective disassembly tool is not found at present, simple tools such as a crow bar and a steel drill are still used for being inserted into an impeller runner to be wrenched, the method is simple and extensive, the impeller is stressed at a single point, the disassembly effect is poor, the impeller is difficult to disassemble, the impeller is easy to damage, and the operation efficiency of the water pump is damaged. For example, when the mechanical seal of the engineering plastic centrifugal pump absorbing the circulating groove leaks, when the mechanical seal is maintained and replaced, a crow bar is inserted into a closed threaded impeller runner to pull and remove the impeller, at the moment, the problem of no pull and twist exists, once the impeller is pulled and twisted, the impeller cannot be removed, the mechanical seal cannot be replaced, if the impeller is pulled and rotated forcibly, the impeller is damaged, and the risk of equipment damage exists. Disclosure of Invention In order to overcome the problems in the background art, the utility model provides a screw impeller dismounting tool, which can realize the safe dismounting of screw impellers, especially closed screw impellers, is not easy to damage or damage the impellers, has the characteristics of compact structure, convenient installation and simple operation, can greatly improve the safety of the installation and the dismounting of the screw impellers, and effectively avoids the damage caused by overhaul. In order to achieve the above purpose, the utility model is realized by the following technical scheme: The screw impeller dismounting tool comprises a turning hub seat, a spinning slurry piece and a polygonal cylinder body, wherein the turning hub seat comprises a base and a sleeve, the base, the sleeve and the polygonal cylinder body are sequentially connected from right to left, a shaft hole communicated with the sleeve and the polygonal cylinder body is formed in the base, and the spinning slurry piece is detachably connected with the base. Preferably, the left end face of the base is provided with slurry sheet installation clamping grooves uniformly distributed along the circumferential direction, a positioning threaded hole is formed in the slurry sheet installation clamping groove area, a concave table matched with the slurry sheet installation clamping groove and the base is formed in the spinning slurry sheet, a waist-shaped