Impeller structure of plastic pump
By introducing installation holes, limiting grooves and reset mechanisms into the plastic pump impeller structure, the impeller rotation problem caused by loose bolts is solved, and the impeller rotation and convenient disassembly are achieved.
Patent Information
- Application Number
- CN202422440325.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-10-10
AI Technical Summary
During the rotation process, the plastic pump impeller is prone to being unable to rotate normally with the shaft due to loose bolts, resulting in a decrease in the efficiency of the pump body.
The design of installation holes, limiting slots, guide blocks and reset mechanisms is adopted. The guide blocks and limit blocks are driven to move in the limit slots through the screws. The centrifugal force is used to keep the limit blocks close to the slots to prevent loosening, and the spring reset mechanism is used to simplify the disassembly process during disassembly.
It effectively prevents the impeller from rotating due to loose installation points during rotation, and simplifies the removal process of the impeller.
Smart Images
Figure CN223270242U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of plastic pump equipment, in particular to an impeller structure of a plastic pump. Background Art
[0002] As the name suggests, plastic pumps are water pumps made of plastic. They typically offer advantages such as corrosion resistance, wear resistance, high temperature resistance, resistance to aging, high mechanical strength, smooth operation, advanced and rational structure, strict and reliable sealing, easy disassembly and maintenance, and long service life. These characteristics make plastic pumps widely applicable in various industrial fields.
[0003] The impeller of a plastic pump is generally fixed to the inside of the pump body by bolts, and the bolts are generally threaded onto the rotating shaft, and then the bolts are rotated so that the bolts squeeze the impeller, thereby fixing the impeller. In this way, when the impeller rotates, the bolts are easily loosened, causing the impeller to be unable to rotate with the rotating shaft, reducing the efficiency of the pump body, so a device is urgently needed to solve the above problem. Utility Model Content
[0004] The purpose of the present utility model is to provide an impeller structure for a plastic pump to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an impeller structure of a plastic pump, comprising a mounting plate, a mounting shaft and an impeller, the mounting shaft being fixed at the center of the mounting plate, a mounting hole being provided at the center of the impeller, the mounting hole being fitted with the mounting shaft, a cavity being provided inside the mounting shaft, a screw being provided at the center of the top end of the mounting shaft through a thread, a rotating block being fixed on one side of the screw for facilitating the rotation of the screw, an extrusion block being fixed on one side of the screw, the extrusion block being a truncated cone block, a limiting groove being provided on the inner side of the impeller, a limiting block being slidably provided inside the limiting groove, and the limiting An extension block is fixedly provided on one side of the positioning block, and a reset mechanism is provided between the extension blocks to facilitate the reset of the extension block. A guide block is fixedly provided on one side of the limit block. When in use, the impeller is installed on the mounting shaft, and then the rotating block is rotated to rotate the screw, thereby driving the screw to move along the inside of the cavity and squeezing the guide block so that the guide block moves close to the inner wall of the cavity, driving the limit block to move into the limit groove. In this way, the rotation of the mounting shaft can drive the impeller to rotate, and the centrifugal force during rotation makes the limit block close to the inside of the limit groove, thereby preventing the problem of the impeller being unable to rotate normally with the mounting shaft due to loosening of the mounting point.
[0006] Preferably, the reset mechanism includes a hollow rod, a movable rod and a spring. The hollow rod is fixed inside the cavity through a support rod, the movable rod is movably inserted inside the hollow rod, and the spring is fixed between the hollow rod and the extension block. When the impeller is installed, the spring is in a stretched state, and the spring force is less than the centrifugal force. During disassembly, the rotating block is rotated in the opposite direction to cause the screw to rotate in the opposite direction, thereby resetting the extrusion block and the spring drives the limit rod to reset and detach from the limit groove, thereby facilitating the disassembly of the impeller.
[0007] Preferably, anti-slip grooves are arranged around the outer side of the rotating block to increase friction.
[0008] Preferably, there are two limiting grooves, which are symmetrically opened on both sides of the impeller.
[0009] Preferably, one side of the guide block is a smooth inclined surface and is in close contact with the outer surface of the extrusion block.
[0010] Preferably, two movable rods are provided, symmetrically arranged at both sides of the hollow rod, and one side of the movable rod is fixed on the extension block.
[0011] Compared with the prior art, the beneficial effects of the present invention are:
[0012] When the utility model is in use, the impeller is mounted on the mounting shaft, and then the rotating block is rotated to rotate the screw, thereby driving the screw to move along the inside of the cavity and squeezing the guide block so that the guide block moves toward a position close to the inner wall of the cavity, driving the limit block to move into the inside of the limit groove. In this way, the rotation of the mounting shaft can drive the impeller to rotate, and the centrifugal force during rotation makes the limit block tightly adhere to the inside of the limit groove, thereby preventing the problem of the impeller being unable to rotate normally with the mounting shaft due to loosening of the mounting point.
[0013] When the impeller is installed, the spring is in a stretched state, and the spring force is less than the centrifugal force. When disassembling, the rotating block is rotated in the opposite direction to make the screw rotate in the opposite direction, so that the extrusion block is reset, and the spring drives the limit rod to reset and disengage from the limit groove, thereby facilitating the disassembly of the impeller. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the overall structure of the impeller structure of a plastic pump of the utility model;
[0015] Figure 2 This is a cross-sectional view of the impeller structure of a plastic pump of the utility model;
[0016] Figure 3 This is an enlarged schematic diagram of the impeller structure A of a plastic pump of the present utility model.
[0017] In the figure: 1. Mounting plate; 2. Mounting shaft; 3. Impeller; 4. Mounting hole; 5. Cavity; 6. Limiting groove; 7. Limiting block; 8. Extension block; 9. Guide block; 10. Extrusion block; 11. Screw; 12. Rotating block; 13. Hollow rod; 14. Movable rod; 15. Spring. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0019] See also Figure 1-3 The utility model provides an impeller structure of a plastic pump, including a mounting plate 1, a mounting shaft 2 and an impeller 3. The mounting shaft 2 is welded and fixed at the center of the mounting plate 1. A mounting hole 4 is opened at the center of the impeller 3, and the mounting hole 4 fits with the mounting shaft 2. A cavity 5 is opened inside the mounting shaft 2. A screw 11 is inserted through a thread at the center of the top of the mounting shaft 2. A rotating block 12 for facilitating the rotation of the screw 11 is welded and fixed on one side of the screw 11. The outer side of the rotating block 12 is surrounded by anti-skid patterns that increase friction. An extrusion block 10 is welded and fixed on one side of the screw 11. The extrusion block 10 is a frustum block. A limiting groove 6 is opened on the inside of the impeller 3. There are two limiting grooves 6, which are symmetrically opened on both sides of the inside of the impeller 3. A limiting block 7 slides inside the limiting groove 6, and one side of the limiting block 7 is welded An extension block 8 is fixed, and a reset mechanism is provided between the extension blocks 8 for facilitating the reset of the extension block 8. A guide block 9 is welded and fixed to one side of the limit block 7. One side of the guide block 9 is a smooth inclined surface and is tightly attached to the outer surface of the extrusion block 10. When in use, the impeller 3 is installed on the mounting shaft 2, and then the rotating block 12 is rotated to rotate the screw 11, thereby driving the screw 11 to move along the inside of the cavity 5, and squeezing the guide block 9, so that the guide block 9 moves close to the inner wall of the cavity 5, driving the limit block 7 to move to the inside of the limit groove 6. In this way, the rotation of the mounting shaft 2 can drive the impeller 3 to rotate, and the centrifugal force during rotation makes the limit block 7 tightly attached to the inside of the limit groove 6, thereby preventing the impeller 3 from being unable to rotate normally with the mounting shaft 2 due to loosening of the mounting point.
[0020] The reset mechanism includes a hollow rod 13, a movable rod 14 and a spring 15. The hollow rod 13 is welded and fixed inside the cavity 5 through a support rod, and the movable rod 14 is movably inserted into the hollow rod 13. There are two movable rods 14, which are symmetrical on both sides of the hollow rod 13. One side of the movable rod 14 is welded and fixed on the extension block 8, and the spring 15 is welded and fixed between the hollow rod 13 and the extension block 8. When the impeller 3 is installed, the spring 15 is in a stretched state, and the elastic force of the spring 15 is less than the centrifugal force. When disassembling, the rotating block 12 is rotated in the opposite direction to make the screw 11 rotate in the opposite direction, so that the extrusion block 10 is reset, and the spring 15 drives the limit rod 7 to reset and disengage from the limit groove 6, thereby facilitating the disassembly of the impeller 3.
[0021] Working principle: When in use, the impeller 3 is installed on the mounting shaft 2, and then the rotating block 12 is rotated to make the screw 11 rotate, thereby driving the screw 11 to move along the inside of the cavity 5 and squeezing the guide block 9 so that the guide block 9 moves close to the inner wall of the cavity 5, driving the limit block 7 to move to the inside of the limit groove 6. In this way, the rotation of the mounting shaft 2 can drive the impeller 3 to rotate, and the centrifugal force during rotation makes the limit block 7 close to the inside of the limit groove 6, preventing the problem of the impeller 3 being unable to follow the normal rotation of the mounting shaft 2 caused by loosening of the mounting point; when the impeller 3 is installed, the spring 15 is in a stretched state, and the elastic force of the spring 15 is less than the centrifugal force. When disassembling, the rotating block 12 is rotated in the opposite direction to make the screw 11 rotate in the opposite direction, so that the extrusion block 10 is reset, and the spring 15 drives the limit rod 7 to reset and disengage from the inside of the limit groove 6, thereby facilitating the disassembly of the impeller 3.
[0022] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.
[0023] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An impeller structure for a plastic pump, comprising a mounting plate (1), a mounting shaft (2) and an impeller (3), characterized in that: The mounting shaft (2) is fixed at the center position of the mounting plate (1); a mounting hole (4) is provided at the center position of the impeller (3); the mounting hole (4) is matched with the mounting shaft (2); a cavity (5) is provided inside the mounting shaft (2); a screw rod (11) is provided at the center position of the top end of the mounting shaft (2) through a thread; a rotating block (12) for facilitating the rotation of the screw rod (11) is fixedly provided on one side of the screw rod (11); an extrusion block (10) is fixedly provided on one side of the screw rod (11); the extrusion block (10) is a truncated cone block; a limiting groove (6) is provided on the inner side of the impeller (3); a limiting block (7) is slidably provided inside the limiting groove (6); an extension block (8) is fixedly provided on one side of the limiting block (7); a reset mechanism for facilitating the reset of the extension block (8) is provided between the extension blocks (8); a guide block (9) is fixedly provided on one side of the limiting block (7).
2. The impeller structure of a plastic pump according to claim 1, characterized in that: The reset mechanism comprises a hollow rod (13), a movable rod (14) and a spring (15); the hollow rod (13) is fixed inside the cavity (5) via a support rod; the movable rod (14) is movably inserted inside the hollow rod (13); and the spring (15) is fixed between the hollow rod (13) and the extension block (8).
3. The impeller structure of a plastic pump according to claim 2, characterized in that: Anti-slip grooves for increasing friction are arranged around the outer side of the rotating block (12).
4. The impeller structure of a plastic pump according to claim 3, characterized in that: Two limiting grooves (6) are provided, symmetrically located on both sides of the interior of the impeller (3).
5. The impeller structure of a plastic pump according to claim 4, characterized in that: One side of the guide block (9) is a smooth inclined surface and is in close contact with the outer surface of the extrusion block (10).
6. The impeller structure of a plastic pump according to claim 5, characterized in that: Two movable rods (14) are provided, symmetrically arranged at both sides of the hollow rod (13), and one side of the movable rod (14) is fixed on the extension block (8).