Dismounting device for impeller of multi-stage water feeding pump

Abstract

The utility model relates to the technical field of dismounting devices, in particular to a multistage water feeding pump impeller dismounting device which comprises two pull rods, a baffle arranged on the rear portions of the pull rods in a sleeved mode, a blocking piece fixed to the pull rods and used for limiting the baffle, a jack and a pull claw fixed to the front ends of the pull rods. The pull claw is used for being clamped on the rear side of the impeller to pull the impeller outwards; the length of the pull rod is gradually increased, so that the initial length of the pull rod is small, and the weight of the pull rod is gradually increased; and the pull rod does not need to be sleeved with an adjusting sleeve, so that the weight of the pull rod at the longest length is still kept relatively light.

Description

Technical Field

[0001] The utility model relates to the technical field of disassembly devices, in particular to a disassembly device for a multi-stage water supply pump impeller. Background Art

[0002] The water supply pump runs at high pressure for a long time, and the various parts are severely worn. They need to be disassembled for repair or replacement. The impeller is installed using a baking process. In the past, when disassembling it, the impeller needed to be baked to 180 degrees Celsius and pried out with a crowbar. This method can easily damage the impeller.

[0003] The patent with application number 202020777742.6 discloses a multi-stage centrifugal pump impeller disassembly tool, which includes a fixed frame, a hydraulic cylinder is fixedly installed in the middle part of the fixed frame by a locking bolt, and pull rods are symmetrically installed on the fixed frame and on both sides of the hydraulic cylinder. One end of the pull rod is connected to the fixed frame through a telescopic adjustment mechanism, and the other end of the pull rod is installed with a hook through a thread. The hook is hooked with the positioning block, and the positioning block is fixed on the outer wall of the middle section of the centrifugal pump to be disassembled; this disassembly tool can be used for disassembly of multi-stage centrifugal pump impellers, thereby greatly improving the disassembly efficiency and reducing unnecessary damage to parts.

[0004] The disadvantages of the patent solution with application number 202020777742.6 are that the length of the pull rod always remains very long and cannot be shortened, and an adjustment sleeve is provided on the outside of the pull rod, which increases the weight of the disassembly tooling. Utility Model Content

[0005] The main purpose of the utility model is to provide a multi-stage water pump impeller disassembly device to solve the problem of heavy weight of the disassembly tooling in the above-mentioned prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a multi-stage water supply pump impeller disassembly device, including two pull rods, a baffle sleeved on the rear of the pull rod, a blocking member fixed on the pull rod for limiting the baffle, a jack and a pull claw fixed on the front end of the pull rod, the pull rod includes multiple threaded pull rod sections, and the pull claw is used to clamp on the rear side of the impeller to pull the impeller outward.

[0007] Furthermore, a slot for inserting a wrench is provided on the pull rod section.

[0008] Furthermore, adjacent pull rod sections are connected via connecting ends, which are threaded rods or threaded sleeves.

[0009] Furthermore, the blocking member is a bolt threadedly connected to the pull rod.

[0010] Furthermore, it also includes a limiting rope, the middle part of the limiting rope is connected to a ring for movably sleeved on the outside of the water pump shaft, and the two ends of the limiting rope are connected to fixed rings fixedly sleeved on the front part of the pull rod.

[0011] The length of the pull rod of the utility model is gradually increased, so that the initial length of the pull rod is relatively small and the weight gradually increases; and because there is no need to connect an adjustment sleeve to the outside of the pull rod, the weight of the pull rod at the longest length remains relatively light; by setting a limit rope, the front part of the pull rod can be limited to prevent the front part from opening to both sides when the pull rod is in the working state. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings in the specification, which constitute a part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0013] Figure 1 This is a schematic structural diagram of Example 1;

[0014] Figure 2 Schematic diagram of the clamping point of the pulling claw in Example 1 when working;

[0015] Figure 3 This is a schematic structural diagram of one of the tie rod sections in Example 1;

[0016] Figure 4 This is a schematic structural diagram of Example 2;

[0017] In the figure: 1. Pull rod; 101. Pull rod section; 1011. Slot; 1012. Connecting end; 2. Baffle; 3. Jack; 4. Pull claw; 5. Blocking member; 6. Impeller; 7. Limiting rope; 701. Ring; 702. Fixing ring; 8. Pump shaft. DETAILED DESCRIPTION

[0018] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0019] Example 1

[0020] like Figures 1 to 3 As shown, a multi-stage water pump impeller disassembly device includes two pull rods 1, a baffle 2 sleeved on the rear of the pull rod 1, a blocking member 5 fixed on the pull rod 1 for limiting the baffle 2, a jack 3 and a pull claw 4 fixed on the front end of the pull rod 1, the pull rod 1 includes a plurality of threaded pull rod sections 101, and the pull claw 4 is used to clamp on the rear side of the impeller 6 to pull the impeller 6 outward.

[0021] A slot 1011 for inserting a wrench is provided on the pull rod segment 101 ; adjacent pull rod segments 101 are connected via a connecting end 1012 , which is a threaded rod or a threaded sleeve.

[0022] The blocking member 5 is a bolt threadably connected to the pull rod 1 .

[0023] Example 2

[0024] like Figure 4 As shown, Example 2 also provides a multi-stage water pump impeller disassembly device. The only difference between Example 2 and Example 1 is that it also includes a limiting rope 7. The middle part of the limiting rope 7 is connected to a ring 701 for movably sleeved on the outside of the water pump shaft 8, and the two ends of the limiting rope 7 are connected to fixed rings 702 fixedly sleeved on the front part of the pull rod 1; by setting the limiting rope 7, the front part of the pull rod 1 can be limited to prevent the front part from opening to both sides when the pull rod 1 is in the working state.

[0025] The working principle of the above embodiment is: when in use, the pull claw 4 is clamped on the rear side of the impeller 6, one end of the jack 3 is abutted on the water pump shaft 8, and the other end is abutted on the baffle 2; start the jack 3, push the baffle 2 backward, and then pull the impeller 6 backward; then use the pull rod section 101 to increase the length of the pull rod 1 to disassemble the next impeller.

[0026] In Example 2, the fixing ring 702 is sleeved on the outside of the water pump shaft 8, and the fixing ring 702 is fixed to the front of the pull rod 1, thereby limiting the front of the pull rod 1 and preventing the front from opening to both sides when the pull rod 1 is in the working state.

[0027] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A multi-stage water pump impeller disassembly device, comprising two tie rods (1), a baffle (2) sleeved on the rear of the tie rods (1), a blocking member (5) fixed on the tie rods (1) for limiting the position of the baffle (2), a jack (3) and a claw (4) fixed on the front end of the tie rods (1), characterized in that: The pull rod (1) comprises a plurality of threaded pull rod segments (101), and the pull claw (4) is used to clamp onto the rear side of the impeller (6) to pull the impeller (6) outwards.

2. The multi-stage water supply pump impeller disassembly device according to claim 1, characterized in that: The pull rod section (101) is provided with a slot (1011) for inserting a wrench.

3. The multi-stage water supply pump impeller disassembly device according to claim 1, characterized in that: Adjacent pull rod sections (101) are connected via a connecting end (1012), and the connecting end (1012) is a threaded rod or a threaded sleeve.

4. The multi-stage water supply pump impeller disassembly device according to claim 1, characterized in that: The blocking member (5) is a bolt threadably connected to the pull rod (1).

5. The multi-stage water supply pump impeller disassembly device according to claim 1, characterized in that: It also comprises a limiting rope (7), the middle part of which is connected to a collar (701) for movably sleeved on the outside of the water pump shaft (8), and both ends of the limiting rope (7) are connected to fixing rings (702) fixedly sleeved on the front part of the pull rod (1).

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