Tool for correcting run-out of opening part of impeller

Abstract

The utility model discloses a tool for correcting run-out of an impeller opening. The tool aims to solve the problems that an existing stainless steel welded impeller is out of round and large in run-out of the opening due to the fact that a flanged hole of a front cover plate is not perpendicular, and the machining quality is low when manual correction is adopted. The tool comprises an impeller and a fixing seat, the fixing seat comprises a detachable base and a gland, a containing cavity matched with the impeller is formed between the base and the gland, a round through hole is formed in the side, away from the base, of the gland, a core rod is installed on the inner wall of the left side of the containing cavity, and a correction wheel set is arranged in the round through hole. The impeller is tightly pressed after the gland is screwed according to the threads, then the bearing makes contact with the interior of the front cover plate at the opening of the impeller, left-right rolling is carried out, after rolling is completed, out-of-round of the stainless steel welding impeller caused by non-perpendicular hole flanging of the front cover plate can be avoided, opening jumping is smaller, the tool is installed on equipment to be used, efficiency is improved, and the cost is reduced. And the machining quality of the impeller is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding impeller correction, and in particular relates to a tool for correcting the vibration of an impeller mouth. Background Art

[0002] The high-speed rotating impeller must ensure its dynamic balance during rotation, that is, the center of gravity of the impeller cannot move due to rotation. However, in actual application, since the stainless steel welded impeller is affected by the processing technology, the impeller mouth will produce an unbalanced fault, which will cause the impeller to produce radial vibration during rotation, thereby subjecting the impeller and even the entire equipment to unnecessary dynamic loads, which is not conducive to the normal operation and work of the impeller. Therefore, most impellers need to be corrected at the impeller mouth. If manual correction is used for processing, not only the processing efficiency is slow, but also the processing quality of the impeller is low. Utility Model Content

[0003] (1) Technical problems to be solved

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a tool for correcting the runout of the impeller mouth. The tool is intended to solve the problems of the existing stainless steel welded impeller being out of round due to the non-vertical hole of the front cover plate, and the large runout of the mouth. Manual correction not only has slow processing efficiency but also low processing quality of the impeller.

[0005] (2) Technical solution

[0006] In order to solve the above technical problems, the utility model provides a tool for correcting the runout of the impeller mouth, which includes an impeller and a fixed seat, the fixed seat including a detachable base and a pressure cover, and an accommodating cavity adapted to the impeller is formed between the base and the pressure cover, a circular through hole is opened on the side of the pressure cover away from the base, a core rod is installed on the left inner wall of the accommodating cavity, and a correction wheel group is arranged in the circular through hole.

[0007] Preferably, a convex ring is fixedly connected to the right side of the base, a mounting groove is provided on the left side of the pressure cover, the accommodating cavity is formed by threaded connection between the inner wall of the mounting groove and the base, and the convex ring is adapted to the left side shape of the impeller.

[0008] Furthermore, the circular through hole and the core rod are arranged coaxially, and the core rod is fixedly connected to the base and protrudes from the right side of the convex ring.

[0009] Furthermore, the cross section of the core rod is a waist-shaped structure.

[0010] Furthermore, the right inner wall of the installation groove is an arc-shaped structure and is adapted to the right outer shape of the impeller, and an avoidance groove is provided on the outer side of the inner wall of the installation groove.

[0011] Furthermore, the correction wheel set includes a tool holder and a roller, and the roller is rotatably mounted on the left end of the tool holder.

[0012] Furthermore, it also includes a pressure plate. The cross-section of the tool holder is a waist-shaped structure. The left end of the tool holder is fixedly connected to a round rod. The roller is a bearing and the inner ring is sleeved on the outer surface of the round rod. The pressure plate is fixedly connected to the round rod by screws.

[0013] Beneficial effects

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model positions the impeller with a waist-shaped hole and places it on the tooling core rod. Then, after the pressure cover is tightened according to the thread, the impeller is pressed together with the base to prevent it from shaking and to guide it accurately. At this time, the mouth of the impeller is located inside the circular through hole. The tool holder is then installed on the tool holder of the equipment. After the bearing contacts the inside of the front cover plate at the mouth of the impeller, it is rolled left and right. Since the circular through hole is a standard circle, the stainless steel welded impeller can be prevented from being out of round due to the non-vertical flipping of the front cover plate after the rolling is completed. The mouth jump is smaller, and the tool is installed and used on the equipment, which not only improves the efficiency but also improves the processing quality of the impeller. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0017] Figure 2 It is a front view cross-sectional structural schematic diagram of the utility model.

[0018] Figure 3 It is a schematic diagram of the explosion structure of the utility model.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the gland of the present invention.

[0020] Figure 5 It is a structural schematic diagram of the correction wheel set of the present utility model.

[0021] The markings in the accompanying drawings are: 1. impeller; 2. base; 3. pressure cover; 4. accommodating chamber; 5. circular through hole; 6. core rod; 7. correction wheel set; 8. convex ring; 9. mounting groove; 10. avoidance groove; 701. tool holder; 702. roller; 703. pressure plate; 704. round rod. DETAILED DESCRIPTION

[0022] This specific embodiment is a tool for correcting the runout of the impeller mouth, and its structural diagram is as follows: Figure 1-Figure 5As shown, the tooling includes an impeller 1 and a fixed seat, the fixed seat includes a detachable base 2 and a pressure cover 3, and an accommodating chamber 4 adapted to the impeller 1 is formed between the base 2 and the pressure cover 3. A circular through hole 5 is opened on the side of the pressure cover 3 away from the base 2, a core rod 6 is installed on the left inner wall of the accommodating chamber 4, and a correction wheel group 7 is arranged in the circular through hole 5. When in use, the base 2 is used to load the rotating equipment, and the correction wheel group 7 is installed on the tool holder of the equipment. The impeller 1 can be sleeved on the outer surface of the core rod 6 and limited circumferentially, and the impeller 1 is fixed in the accommodating chamber 4 by the base 2 and the pressure cover 3. At this time, the mouth of the impeller 1 is located inside the circular through hole 5, and finally the mouth of the impeller 1 is corrected by the correction wheel group 7.

[0023] like Figure 2 、 Figure 3 and Figure 4 As shown: In this embodiment, a convex ring 8 is fixedly connected to the right side of the base 2, a mounting groove 9 is opened on the left side of the pressure cover 3, and the accommodating cavity 4 is formed by the inner wall of the mounting groove 9 and the base 2 being threadedly connected, and a mounting column is fixedly connected to the left side of the base 2, which facilitates the installation of the rotating equipment. At the same time, the convex ring 8 is adapted to the left side shape of the impeller 1, so that the impeller 1 is fixed in the accommodating cavity 4 for better fit, avoiding the appearance of indentations on the left side after the pressure cover 3 is tightened according to the thread and presses the impeller 1.

[0024] like Figure 2 and Figure 3 As shown: In this embodiment, the circular through hole 5 and the core rod 6 are arranged coaxially, the core rod 6 is fixedly connected to the base 2 and protrudes from the right side of the convex ring 8, so that the impeller 1 can be fixed in the accommodating cavity 4 so that it does not shake and is guided. At this time, the mouth of the impeller 1 is located inside the circular through hole 5.

[0025] like Figure 2 and Figure 3 As shown: In this embodiment, the positioning hole on the impeller 1 is a waist-shaped hole, and the cross-section of the core rod 6 is a waist-shaped structure. The core rod 6 is mainly used to circumferentially limit the impeller 1 sleeved on the outer surface. Of course, if the impeller 1 has positioning holes of other shapes, the cross-section of the core rod 6 can be a corresponding cross-section.

[0026] like Figure 3 and Figure 4 As shown: In this embodiment, the right inner wall of the mounting groove 9 is an arc-shaped structure and is adapted to the right outer shape of the impeller 1. An avoidance groove 10 is provided on the outer side of the inner wall of the mounting groove 9, so that the impeller 1 is fixed in the accommodating cavity 4 for better fit, avoiding the occurrence of indentations on the right side after the pressure cover 3 is tightened according to the thread and the impeller 1 is pressed.

[0027] like Figure 1 and Figure 5As shown: In this embodiment, the correction wheel set 7 includes a tool holder 701 and a roller 702, and the roller 702 is rotatably mounted on the left end of the tool holder 701.

[0028] When in use, the tool holder 701 is installed on the tool holder of the device. After the device is turned on, the tool holder 701 is moved so that the roller 702 contacts the inside of the front cover plate at the mouth of the impeller 1, and then rolled left and right to complete the calibration.

[0029] like Figure 1 and Figure 5 As shown: In this embodiment, a pressure plate 703 is also included. The cross-section of the tool holder 701 is a waist-shaped structure. The left end of the tool holder 701 is fixedly connected to a round rod 704. The roller 702 is a bearing and the inner ring is sleeved on the outer surface of the round rod 704. The pressure plate 703 is fixedly connected to the round rod 704 by screws. In this way, when installing, the screws are tightened to fix the bearing through the pressure plate 703, and then the equipment is turned on. The bearing rolls the inside of the front cover plate at the mouth of the impeller 1 left and right, which makes installation more convenient.

[0030] Working principle: When in use, first install the base 2 into the rotary equipment and calibrate the runout of the base 2 itself, then position the impeller 1 into the tooling core rod 6 with the waist-shaped hole. At this time, the impeller 1 is sleeved on the outer surface of the core rod 6 and limited circumferentially. Then, the pressure cover 3 is tightened according to the thread, and the impeller 1 is pressed together with the base 2 to prevent it from shaking and to guide it accurately. At this time, the mouth of the impeller 1 is located inside the circular through hole 5. Then, the tool holder 701 is installed on the tool holder of the equipment, and the screws are tightened to fix the bearing through the pressure plate 703. Then start the equipment, move the tool holder 701, make the bearing contact with the inside of the front cover plate at the mouth of the impeller 1, and then roll it left and right. Since the circular through hole 5 is a standard circle, after rolling, the stainless steel welded impeller can be prevented from being out of round due to the non-vertical flipping of the front cover plate, etc., and the mouth jump is smaller. The tool is installed on the equipment for use, which not only improves efficiency, but also improves the processing quality of the impeller. After rolling, the parts are taken out. This tool fixture has been verified in actual work, and the jump can be guaranteed to be within 0.05.

[0031] All technical features in this embodiment can be freely combined according to actual needs.

[0032] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the scope of protection of the present invention.

Claims

1. A tool for correcting the runout of an impeller mouth, the tool comprising an impeller (1) and a fixing seat, characterized in that: The fixing seat comprises a detachable base (2) and a pressure cover (3); a receiving cavity (4) adapted to the impeller (1) is formed between the base (2) and the pressure cover (3); a circular through hole (5) is provided on a side of the pressure cover (3) away from the base (2); a core rod (6) is installed on the left inner wall of the receiving cavity (4); and a correction wheel set (7) is provided in the circular through hole (5).

2. The tool for correcting the impeller mouth runout according to claim 1, characterized in that: A convex ring (8) is fixedly connected to the right side of the base (2), a mounting groove (9) is provided on the left side of the pressure cover (3), the accommodating cavity (4) is formed by threaded connection between the inner wall of the mounting groove (9) and the base (2), and the convex ring (8) is adapted to the left side shape of the impeller (1).

3. The tool for correcting the impeller mouth runout according to claim 2, characterized in that: The circular through hole (5) and the core rod (6) are coaxially arranged, and the core rod (6) is fixedly connected to the base (2) and protrudes from the right side of the convex ring (8).

4. The tool for correcting the impeller mouth runout according to claim 3, characterized in that: The cross section of the core rod (6) is a waist-shaped structure.

5. The tool for correcting the impeller mouth runout according to claim 4, characterized in that: The right inner wall of the installation groove (9) is an arc-shaped structure and matches the right outer shape of the impeller (1). An avoidance groove (10) is provided on the outer side of the inner wall of the installation groove (9).

6. The tool for correcting impeller mouth runout according to claim 1, characterized in that: The correction wheel set (7) comprises a tool rest (701) and a roller (702), wherein the roller (702) is rotatably mounted on the left end of the tool rest (701).

7. The tool for correcting the runout of the impeller mouth according to claim 6, characterized in that: It also includes a pressure plate (703), the cross section of the tool holder (701) is a waist-shaped structure, the left end of the tool holder (701) is fixedly connected to a round rod (704), the roller (702) is a bearing and the inner ring is sleeved on the outer surface of the round rod (704), and the pressure plate (703) is fixedly connected to the round rod (704) by screws.

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