Novel closed impeller applied to slurry media
By installing cover plates at the upper and lower ends of the closed impeller and locking them with set screws, the impeller can be converted to an open design, solving the problems of clogging and maintenance difficulties of traditional closed impellers, and improving the application scenarios and maintenance efficiency of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DALIAN SONGLONE PUMP MFG
- Filing Date
- 2025-05-15
- Publication Date
- 2026-05-12
AI Technical Summary
Traditional closed impellers are prone to clogging and severe wear when conveying slurry media, and are difficult to convert to open impellers, resulting in high production costs and difficult maintenance.
A novel closed impeller is designed by setting a rear cover plate and a front cover plate at the upper and lower ends of the impeller and locking them with set screws, thereby realizing the open modification of the impeller. This combines the flow channel stability of a closed impeller with the easy maintenance of an open impeller.
This allows for flexible impeller modification, reducing maintenance costs and downtime while maintaining the efficient conversion of mechanical energy into fluid energy, thus improving the equipment's application scenarios and stability.
Smart Images
Figure CN224228937U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of closed impeller technology, and in particular to a novel closed impeller applied to slurry media. Background Technology
[0002] Traditional closed impellers have certain limitations when dealing with slurry media. They consist of a front cover plate, a rear cover plate, and blades. While this structure can improve pump efficiency and head to some extent, it also makes the internal flow channels of the impeller relatively complex. When conveying slurry, solid particles are prone to accumulate in the flow channels, leading to blockage and increased wear. Moreover, the structural design of closed impellers makes it difficult to convert them into open impellers.
[0003] Since modifications are not possible, companies have to redesign and manufacture new impellers to meet different operating conditions, which undoubtedly increases production costs significantly. From material procurement and processing to assembly and debugging, every step requires a large investment of manpower, material resources, and financial resources. At the same time, closed impellers are also difficult to maintain. Once a failure occurs, due to their complex structure, maintenance personnel need to spend more time and effort to disassemble, inspect, and repair them, which not only prolongs the downtime of the equipment but also increases maintenance costs, seriously affecting the company's production efficiency and economic benefits. Utility Model Content
[0004] In order to overcome the problems of high production costs and difficult maintenance caused by the inability to be converted into open impellers, this utility model provides a new type of closed impeller for slurry media.
[0005] The technical solution is as follows: A novel closed impeller for slurry media includes a slurry media pump assembly, and further includes an impeller assembly, a coupling, a motor, and a pump pipe; the impeller assembly is internally arranged in the slurry media pump assembly; a coupling is arranged at the upper end of the slurry media pump assembly; a motor is arranged at the upper end of the coupling; a pump pipe is arranged on one side of the slurry media pump assembly, and the pump pipe is connected to the output end of the slurry media pump assembly; the slurry media pump assembly includes a pump body, a pump cover, a transmission connection key, and an impeller nut; the impeller assembly includes a closed impeller, an impeller rear cover plate, an impeller front cover plate, and a set screw.
[0006] Furthermore, a pump cover is provided at the upper end of the pump body, and the pump cover is sealed to the pump body by bolts; a transmission connection key is provided inside the pump cover; a closed impeller is provided at the lower end of the transmission connection key, and the closed impeller is fixedly connected to the transmission connection key.
[0007] Furthermore, the upper end of the closed impeller is provided with an impeller rear cover plate, and the impeller rear cover plate is spliced and connected to the closed impeller.
[0008] Furthermore, the lower end of the closed impeller is provided with an impeller front cover plate, and the impeller front cover plate is spliced and connected to the closed impeller.
[0009] Furthermore, set screws are provided between the impeller rear cover plate, the impeller front cover plate and the closed impeller, and the set screws are used to lock the impeller rear cover plate, the impeller front cover plate and the closed impeller together.
[0010] Furthermore, an impeller nut is provided at the lower end of the closed impeller, and the impeller nut securely connects the closed impeller to the transmission connection key thread.
[0011] Furthermore, the motor drives the impeller assembly to rotate via a coupling.
[0012] The beneficial effects are as follows: This utility model uses set screws to lock the impeller rear cover plate and impeller front cover plate at both ends of the closed impeller. When the impeller rear cover plate and impeller front cover plate are removed, an open impeller conversion can be achieved, greatly expanding the application scenarios of the equipment and reducing maintenance costs. Thus, it combines the advantages of both. The open impeller, without front and rear cover plates, exposes the blades directly to the fluid, resulting in a wide flow channel and good throughput for fluids containing solid particles, fibers, or other impurities, reducing the likelihood of blockage. Due to the more open impeller structure, inspection, cleaning, and replacement of the impeller are relatively easy during equipment maintenance, reducing maintenance costs and downtime. The closed impeller, with its front and rear cover plates, provides more stable fluid flow between the blades, minimizing leakage loss and more effectively converting mechanical energy into fluid kinetic and pressure energy, resulting in higher efficiency. The relatively fixed flow channel shape of the closed impeller ensures strong fluid flow regularity, leading to more stable performance under different operating conditions and providing consistent flow and pressure. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0014] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;
[0015] Figure 3 This is a cross-sectional structural diagram of the slurry-type medium pump assembly and impeller assembly of this utility model.
[0016] Figure 4 This is an exploded view of the impeller assembly of this utility model.
[0017] In the attached diagram, the following are the reference numerals: 1. Slurry pump assembly; 2. Impeller assembly; 3. Coupling; 4. Motor; 5. Pump pipe; 101. Pump body; 102. Pump cover; 103. Transmission connection key; 104. Impeller nut; 201. Closed impeller; 202. Impeller rear cover plate; 203. Impeller front cover plate; 204. Set screw. Detailed Implementation
[0018] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.
[0019] Example
[0020] like Figures 1-4 As shown, a novel closed impeller for slurry media includes a slurry media pump assembly 1, an impeller assembly 2, a coupling 3, a motor 4, and a pump pipe 5. The impeller assembly 2 is disposed inside the slurry media pump assembly 1. The coupling 3 is disposed at the upper end of the slurry media pump assembly 1. The motor 4 is disposed at the upper end of the coupling 3. The pump pipe 5 is disposed on one side of the slurry media pump assembly 1 and is connected to the output end of the slurry media pump assembly 1. The slurry media pump assembly 1 includes a pump body 101, a pump cover 102, a transmission connection key 103, and an impeller nut 104. The impeller assembly 2 includes a closed impeller 201, an impeller rear cover plate 202, an impeller front cover plate 203, and a set screw 204.
[0021] A pump cover 102 is provided at the upper end of the pump body 101, and the pump cover 102 is sealed to the pump body 101 by bolts; a transmission connection key 103 is provided inside the pump cover 102; a closed impeller 201 is provided at the lower end of the transmission connection key 103, and the closed impeller 201 is fixedly connected to the transmission connection key 103.
[0022] The upper end of the closed impeller 201 is provided with an impeller rear cover plate 202, and the impeller rear cover plate 202 is spliced and connected to the closed impeller 201.
[0023] The lower end of the closed impeller 201 is provided with an impeller front cover plate 203, and the impeller front cover plate 203 is spliced and connected to the closed impeller 201.
[0024] A set screw 204 is provided between the impeller rear cover plate 202, the impeller front cover plate 203 and the closed impeller 201, and the set screw 204 locks the impeller rear cover plate 202, the impeller front cover plate 203 and the closed impeller 201 together.
[0025] The lower end of the closed impeller 201 is provided with an impeller nut 104, and the impeller nut 104 is threadedly fixed to the closed impeller 201 and the transmission connection key 103; the motor 4 drives the impeller assembly 2 to rotate through the coupling 3.
[0026] The impeller rear cover plate 202 and impeller front cover plate 203 at both ends of the closed impeller 201 are locked with set screws 204. Removing the rear cover plate 202 and impeller front cover plate 203 allows for the conversion to an open impeller, greatly expanding the equipment's application scenarios and reducing maintenance costs. This combines the advantages of both types of impellers. The open impeller, without front and rear cover plates, exposes the blades directly to the fluid, resulting in a wide flow channel. This provides good throughput for fluids containing solid particles, fibers, or other impurities, reducing the likelihood of blockages. Due to its more open structure, impeller inspection, cleaning, and replacement are relatively easy during equipment maintenance, reducing maintenance costs and downtime. The closed impeller 201, with its front and rear cover plates, provides more stable fluid flow between the blades, minimizing leakage losses and more effectively converting mechanical energy into kinetic and pressure energy, resulting in higher efficiency. The relatively fixed flow channel shape of the closed impeller 201 ensures strong fluid flow regularity, leading to stable performance under different operating conditions and providing consistent flow and pressure.
Claims
1. A novel closed impeller for use with slurry media, comprising a slurry media pump assembly (1), characterized in that: It also includes an impeller assembly (2), a coupling (3), a motor (4), and a pump pipe (5); the slurry pump assembly (1) has an impeller assembly (2) inside; the slurry pump assembly (1) has a coupling (3) at its upper end; the coupling (3) has a motor (4) at its upper end; the slurry pump assembly (1) has a pump pipe (5) on one side, and the pump pipe (5) is connected to the output end of the slurry pump assembly (1); the slurry pump assembly (1) includes a pump body (101), a pump cover (102), a transmission connection key (103), and an impeller nut (104); the impeller assembly (2) includes a closed impeller (201), an impeller rear cover plate (202), an impeller front cover plate (203), and a set screw (204).
2. The novel closed impeller for slurry media according to claim 1, characterized in that: A pump cover (102) is provided at the upper end of the pump body (101), and the pump cover (102) is sealed to the pump body (101) by bolts; a transmission connection key (103) is provided inside the pump cover (102); a closed impeller (201) is provided at the lower end of the transmission connection key (103), and the closed impeller (201) is fixedly connected to the transmission connection key (103).
3. A novel closed impeller for use with slurry media according to claim 2, characterized in that: The upper end of the closed impeller (201) is provided with an impeller rear cover plate (202), and the impeller rear cover plate (202) is spliced and connected to the closed impeller (201).
4. A novel closed impeller for use with slurry media according to claim 2, characterized in that: The lower end of the closed impeller (201) is provided with an impeller front cover plate (203), and the impeller front cover plate (203) is spliced and connected to the closed impeller (201).
5. A novel closed impeller for use with slurry media according to claim 3, characterized in that: Set screws (204) are provided between the impeller rear cover plate (202), the impeller front cover plate (203) and the closed impeller (201), and the impeller rear cover plate (202), the impeller front cover plate (203) and the closed impeller (201) are locked together by the set screws (204).
6. A novel closed impeller for use with slurry media according to claim 2, characterized in that: The lower end of the closed impeller (201) is provided with an impeller nut (104), and the impeller nut (104) is threadedly fixed to the closed impeller (201) and the transmission connection key (103).
7. A novel closed impeller for use with slurry media according to claim 1, characterized in that: The motor (4) drives the impeller assembly (2) to rotate via the coupling (3).