Rotor extractor for rotor pump

Abstract

The utility model relates to the technical field of rotor extraction, and provides a rotor extractor for a rotor pump, which is characterized in that three groups of first threaded rods sequentially penetrate through first threaded sleeves and are screwed into threaded grooves so as to fix a rotor and a screwing disc; and then the second threaded rod is screwed, so that the second threaded rod is spirally propelled at the second threaded sleeve and abuts against the pump shaft to take out the rotor from the pump shaft, through the design, the rotor can be rapidly separated from the pump shaft outwards, and meanwhile abrasion to the rotor in the taking-out process is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rotor removal, and in particular to a rotor extractor for a rotor pump. Background Art

[0002] A rotor pump is a pump that changes the working volume through the relative movement between the rotor and the pump body, thereby increasing the energy of the liquid. A rotor pump is a rotating positive displacement pump with a positive displacement property. Its flow rate does not change with the back pressure. However, how to quickly remove the rotor pump from the outside of the pump shaft for maintenance is an urgent problem to be solved.

[0003] After searching, the announcement number CN207447327U discloses a rotor removal tool, which solves the problem that it is inconvenient to remove the existing rotor from the mold core. It includes an outer tube, an inner rod and a hammer sleeve; the upper end of the outer tube has a force-bearing rod perpendicular to the outer tube, and the lower end is connected to an expansion sleeve, and the expansion sleeve has a plurality of evenly arranged fixing plates; the inner rod is arranged in the outer tube and is arranged in cooperation with the outer tube thread, the upper end of the inner rod passes through the upper end of the outer tube and is connected to a grip rod, and the lower end of the inner rod passes through the lower end of the outer tube and is connected to an extrusion block, and the extrusion block is located in the expansion sleeve. After the extrusion block moves downward, it can push the fixing plate to deform outward; the hammer sleeve is arranged on the outer tube and can move on the outer tube, so that the rotor can be conveniently removed from the mold core without causing damage to the rotor.

[0004] The above-mentioned rotor removal tool utilizes the up and down movement of the hammer sleeve to hammer the force-bearing rod, thereby removing the rotor. This design easily causes the rotor to be affected by the hammering during the removal process and thus to be worn. Utility Model Content

[0005] The utility model provides a rotor extractor for a rotor pump, which solves the problem in the prior art that the rotor is easily affected by the hammering and thus wear is generated in the rotor during the process of hammering a force-bearing rod to remove the rotor.

[0006] The technical solution of the utility model is as follows: a rotor extractor for a rotor pump, comprising a holding assembly, a rotor pump member for removing a rotor arranged below the holding assembly, the holding assembly comprising a screwing plate, three groups of screwing assemblies are arranged in a ring shape around the screwing plate, the rotor pump member is composed of a rotor and a pump shaft, three groups of threaded grooves are arranged in a ring shape on the front side of the rotor, the screwing assembly comprises a first threaded rod for threaded connection with the threaded groove to complete the screwing, a removal assembly is arranged in the middle of the screwing plate, the removal assembly comprises a second threaded rod, the second threaded rod can support the pump shaft and spirally advance after the first threaded rod and the threaded groove are completely screwed, so as to remove the rotor from the outside of the pump shaft.

[0007] Preferably, the tightening assembly further comprises a first threaded sleeve, which is in three groups and is annularly fixedly connected to the slots penetrating the screwing disc.

[0008] Preferably, the position distribution of each of the first threaded sleeves on the screw disk is consistent with the position distribution of the thread grooves on the front side of the rotor.

[0009] Preferably, the tightening assembly further comprises a nut, which is disposed below the first threaded sleeve and is threadedly connected to the first threaded rod.

[0010] Preferably, the removal assembly further comprises a second threaded sleeve, the second threaded sleeve is fixedly connected to a slot passing through the middle of the screw disk, and the position distribution of the second threaded sleeve on the screw disk is consistent with the position distribution of the pump shaft on the rotor.

[0011] Preferably, the removal assembly further comprises a cone head, and the cone head is fixedly connected to the bottom of the second threaded rod.

[0012] Preferably, the holding assembly further comprises a handle and a reinforcement plate, one side of the reinforcement plate is fixedly connected to the screw disk, and the side of the reinforcement plate away from the screw disk is fixedly connected to the handle.

[0013] Preferably, the grip assembly further comprises an anti-slip sleeve, and the anti-slip sleeve is sleeved on the outer surface of the grip.

[0014] The beneficial effects of the utility model are:

[0015] The utility model can sequentially pass three groups of first threaded rods through the first threaded sleeve and screw them into the threaded groove to complete the fixing work of the rotor and the screw plate, and then screw the second threaded rod so that the second threaded rod is spirally advanced at the second threaded sleeve and presses against the pump shaft to remove the rotor from the pump shaft. Through this design, not only can the rotor be quickly separated from the pump shaft, but also the wear on the rotor during the removal process is effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0017] Figure 1 This is a schematic diagram of the overall device structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the gripping assembly of the present utility model;

[0019] Figure 3 It is a schematic diagram of the tightening assembly and the removal assembly of the utility model;

[0020] Figure 4 It is a schematic diagram of the bottom side of the tightening assembly and the removal assembly of the utility model;

[0021] Figure 5 This is a front view of the rotor pump of the utility model;

[0022] In the figure: 1. holding assembly; 11. screw plate; 12. reinforcement plate; 13. handle; 131. anti-slip sleeve; 2. screwing assembly; 21. first threaded sleeve; 22. first threaded rod; 23. nut; 3. removal assembly; 31. second threaded sleeve; 32. second threaded rod; 321. cone head; 4. rotor pump component; 41. rotor; 42. threaded groove; 43. pump shaft. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1 The utility model provides a technical solution: a rotor pump rotor extractor, comprising a gripping assembly 1, a rotor pump member 4 for removing a rotor arranged below the gripping assembly 1, the gripping assembly 1 comprising a screwing plate 11, the screwing plate 11 having three groups of screwing and fixing assemblies 2 arranged in a ring shape around the rotor pump member 4, the rotor pump member 4 consisting of a rotor 41 and a pump shaft 43, the front of the rotor 41 having three groups of screwing and fixing assemblies 42 arranged in a ring shape, the screwing and fixing assemblies 2 comprising a first threaded rod 22 for threaded connection with the screwing groove 42 to complete screwing, a removal assembly 3 is arranged in the middle of the screwing plate 11, the removal assembly 3 comprising a second threaded rod 32, the second threaded rod 32 can support the pump shaft 43 and spirally advance after the first threaded rod 22 and the screwing groove 42 are completely screwed, so as to remove the rotor 41 from the outside of the pump shaft 43, and this design solves the problem that the rotor is easily affected by the hammering and thus wear in the process of removing the rotor by hammering the force-bearing rod in the prior art.

[0025] See also Figure 3 and Figure 4 The tightening assembly 2 also includes a first threaded sleeve 21. The first threaded sleeve 21 is three groups and is fixedly connected to the grooves that penetrate the screw disk 11 in an annular shape. The position distribution of each first threaded sleeve 21 on the screw disk 11 is consistent with the position distribution of the thread groove 42 on the front of the rotor 41. Through this design, the first threaded rod 22 can correspond to the position of the thread groove 42 after being spirally pushed in the first threaded sleeve 21. The tightening assembly 2 also includes a nut 23. The nut 23 is arranged below the first threaded sleeve 21 and is threadedly connected to the first threaded rod 22.

[0026] See also Figure 4The removal component 3 also includes a second threaded sleeve 31, which is fixedly connected to the slot in the middle of the screw disk 11. The position distribution of the second threaded sleeve 31 on the screw disk 11 is consistent with the position distribution of the pump shaft 43 on the rotor 41. Through this design, the second threaded rod 32 can be spirally pushed in the second threaded sleeve 31 and matched with the pump shaft 43.

[0027] See also Figure 4 The removal assembly 3 also includes a cone head 321, which is fixedly connected to the bottom of the second threaded rod 32.

[0028] See also Figure 2 The holding assembly 1 also includes a handle 13 and a reinforcement plate 12. One side of the reinforcement plate 12 is fixedly connected to the screw disk 11, and the reinforcement plate 12 is fixedly connected to the handle 13 on the side away from the screw disk 11. The holding assembly 1 also includes an anti-slip sleeve 131, which is sleeved on the outer surface of the handle 13. This design can increase the friction of the staff holding the handle 13.

[0029] The working principle and use process of the utility model are as follows:

[0030] The user can hold the anti-slip sleeve 131 and align the first threaded sleeves 21 of the screw disk 11 with the threaded groove 42, and then sequentially pass the three groups of first threaded rods 22 through the first threaded sleeves 21 and screw them into the threaded groove 42 to complete the fixation of the rotor 41 and the screw disk 11, and then screw the second threaded rod 32 so that the second threaded rod 32 is spirally advanced at the second threaded sleeve 31 and supports the pump shaft 43 to remove the rotor 41 from the pump shaft 43. This design not only allows the rotor 41 to quickly detach from the pump shaft 43, but also effectively reduces the wear on the rotor 41 during the removal process.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotor pump rotor extractor, comprising a gripping assembly (1), and a rotor pump component (4) for removing a rotor arranged below the gripping assembly (1), characterized in that: The holding assembly (1) comprises a screwing disc (11), and three groups of screwing assemblies (2) are arranged in an annular shape around the screwing disc (11). The rotor pump component (4) is composed of a rotor (41) and a pump shaft (43). The front side of the rotor (41) is provided with three groups of thread grooves (42) in an annular shape. The screwing assembly (2) comprises a first threaded rod (22) for threaded connection with the thread groove (42) to complete screwing. A removal assembly (3) is arranged in the middle of the screwing disc (11). The removal assembly (3) comprises a second threaded rod (32). After the first threaded rod (22) and the thread groove (42) are screwed together, the second threaded rod (32) can support the pump shaft (43) and be screwed forward to remove the rotor (41) from the outside of the pump shaft (43).

2. A rotor pump rotor extractor according to claim 1, characterized in that: The tightening assembly (2) further comprises a first threaded sleeve (21), wherein the first threaded sleeve (21) comprises three groups and is annularly fixedly connected to a slot that passes through the screwing disc (11).

3. A rotor pump rotor extractor according to claim 2, characterized in that: The position distribution of each of the first threaded sleeves (21) on the screw disk (11) is consistent with the position distribution of the threaded grooves (42) on the front side of the rotor (41).

4. A rotor pump rotor extractor according to claim 1, characterized in that: The tightening assembly (2) further comprises a nut (23), wherein the nut (23) is arranged below the first threaded sleeve (21) and is threadably connected to the first threaded rod (22).

5. The rotor extractor for a rotor pump according to claim 1, characterized in that: The removal assembly (3) further comprises a second threaded sleeve (31), the second threaded sleeve (31) being fixedly connected to a through slot in the middle of the screw disk (11), the position distribution of the second threaded sleeve (31) on the screw disk (11) being consistent with the position distribution of the pump shaft (43) on the rotor (41).

6. A rotor pump rotor extractor according to claim 1, characterized in that: The removal assembly (3) further comprises a cone head (321), wherein the cone head (321) is fixedly connected to the bottom of the second threaded rod (32).

7. The rotor extractor for a rotor pump according to claim 1, characterized in that: The gripping assembly (1) further comprises a grip (13) and a reinforcement plate (12); one side of the reinforcement plate (12) is fixedly connected to the screw disk (11); and the side of the reinforcement plate (12) away from the screw disk (11) is fixedly connected to the grip (13).

8. The rotor extractor for a rotor pump according to claim 1, characterized in that: The grip assembly (1) further comprises an anti-slip sleeve (131), wherein the anti-slip sleeve (131) is sleeved on the outer surface of the grip (13).

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