CN212470564U

CN212470564U - Device for static balance and weight removal of semi-open impeller

Info

Publication number: CN212470564U
Application number: CN202020813580.7U
Authority: CN
Inventors: 吴永旭; 刘龙
Original assignee: Shanghai East Pump Group Co Ltd
Current assignee: Shanghai East Pump Group Co Ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2021-02-05
Anticipated expiration: 2030-05-15

Abstract

The utility model discloses a device that is used for semi-open impeller static balance to remove heavy, including dabber, apex hole, four-jaw chuck and round nut, dabber one end is provided with the four-jaw chuck, the dabber other end is provided with the apex hole, be provided with the ejector pin on the apex hole, the dabber middle part is provided with the spline, be provided with the impeller on the spline, impeller one side is provided with the round nut, the impeller opposite side is provided with the location step, be close to in the spindle apex hole one side is provided with the heart of a chicken and presss from both sides. Has the advantages that: the utility model discloses a design of dabber, location step, four-jaw chuck, round nut and apex hole not only makes the device can carry out the static balance to the not unidimensional impeller and removes heavy operation, has improved the application range of device, installs holistic light in weight moreover, and the dismouting is convenient, very big improvement the efficiency that impeller static balance removed heavy processing, the practicality is good.

Description

Device for static balance and weight removal of semi-open impeller

Technical Field

The utility model relates to a semi-open impeller static balance removes heavy technical field, concretely relates to a device that is used for semi-open impeller static balance to remove heavy.

Background

At present, when the semi-open type impeller is subjected to static balance weight removal operation, the existing method generally comprises the following steps: 1. assembling a balance core shaft with a key and an impeller; 2. placing the impeller assembled with the mandrel on a balancing stand, and measuring the end surfaces of two hubs of the impeller by using a measuring tape to ensure that the distance between the two hubs is equal to the distance between two parallel guide rails; 3. and (3) enabling the impeller to roll gently towards one direction, stopping naturally until the impeller stops, marking the lowest point, then enabling the impeller to roll in the opposite direction, and marking the lowest point. The above operation is repeated 3 to 4 times, and the average position of each mark, namely the orientation of the impeller without balancing weight, is taken. Adding a certain amount of oil sludge at the lightest position of the upper part for balancing weight, then repeating the operation, and adjusting the position and the amount of the oil sludge until the impeller is placed on a test rack to freely roll, so that static balance can be achieved when the impeller can stay at any position; 4. taking down the oil sludge, weighing by using balance, marking the 180-degree relative position of the oil sludge adhered to the impeller, and taking down the impeller; 5. and (3) removing the outer circle of the end face of the rear cover plate in the unbalanced direction by using a milling machine, cutting 1/3 with the thickness not exceeding the thickness of the cover plate, then taking down the impeller for retesting, and repeating the operation steps until the requirement of the drawing is met if the number of grams of the allowable unbalance which does not meet the requirement of the drawing of a product is not met.

However, when the semi-open impeller is statically balanced and de-weighted by adopting the processing mode, the chuck and the mandrel are heavy and inconvenient to assemble and disassemble, and the sizes of the chuck and the mandrel are required to be customized according to the size of the impeller to be processed, so that the static balance and de-weighting processing efficiency of the impeller is low, and the device for statically balancing and de-weighting the semi-open impeller is urgently needed to solve the existing problems.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to overcome the defects of the prior art, the device for statically balancing and removing the weight of the semi-open impeller is provided, and the problems that when the static balancing and removing the weight of the existing semi-open impeller is carried out, the weight of a chuck and a mandrel is large, the assembly and disassembly are inconvenient, the sizes of the chuck and the mandrel need to be customized according to the size of the impeller to be machined, and the static balancing and removing weight machining efficiency of the impeller is low are solved.

(II) technical scheme

The utility model discloses a following technical scheme realizes: the utility model provides a device that is used for semi-open impeller static balance to remove heavy, including dabber, apex hole, four-jaw chuck and round nut, dabber one end is provided with the four-jaw chuck, the dabber other end is provided with the apex hole, be provided with the ejector pin on the apex hole, the dabber middle part is provided with the spline, be provided with the impeller on the spline, impeller one side is provided with the round nut, the impeller opposite side is provided with the location step, be close to in the spindle apex hole one side is provided with the heart of a chicken and presss from both sides.

Through adopting above-mentioned technical scheme, through the dabber the location step four-jaw chuck round nut and the design in apex hole not only makes the device can be to not unidimensional the impeller carries out the static balance weight removal operation, has improved the application range of device, installs holistic light in weight moreover, and the dismouting is convenient, very big improvement the efficiency of impeller static balance weight removal processing, the practicality is good.

Furthermore, the center hole is formed on the mandrel, and the center hole is radially distributed from the axis of the mandrel to the outer circle.

By adopting the technical scheme, the static balance weight-removing operation can be carried out on the impeller by utilizing the principle that the shaft hole of the impeller and the mandrel are not concentric.

Furthermore, the part where the ejector rod is connected with the tip hole is of a conical structure.

By adopting the technical scheme, the mandrel can be reliably pushed tightly.

Further, the mandrel penetrates through the chicken heart clamp.

By adopting the technical scheme, the chicken heart clamps the prior art, and is mainly used for limiting the rotation freedom degree of the mandrel so as to facilitate subsequent operation.

Further, the round nut is screwed with the mandrel, and the round nut is a standard round nut in GB/T812.

By adopting the technical scheme, the impeller can be reliably fixed.

Furthermore, the spline is connected with the mandrel in a clamping and pressing mode, and the spline is an A-shaped key.

By adopting the technical scheme, the impeller can be more reliably installed.

Further, the mandrel penetrates through the impeller, and the impeller is connected with the mandrel through the spline and the round nut.

Further, the positioning step is formed on the mandrel.

Through adopting above-mentioned technical scheme, can realize the location installation of impeller.

(III) advantageous effects

Compared with the prior art, the utility model, following beneficial effect has:

for solving current semi-open impeller when carrying out the static balance weight removing operation, chuck and dabber not only weight are great, and loading and unloading are comparatively inconvenient, and the size of chuck and dabber also needs to be customized according to the size of waiting to process the impeller, leads to the comparatively low problem of impeller static balance weight removing machining efficiency, the utility model discloses a dabber, location step, four-jaw chuck, the design of round nut and apex hole not only make the device carry out the static balance weight removing operation to the not unidimensional impeller, improved the application range of device, install holistic light in weight moreover, the dismouting is convenient, very big improvement the efficiency of impeller static balance weight removing processing, the practicality is good.

Drawings

Fig. 1 is a schematic structural diagram of a device for static balance and weight removal of a semi-open impeller according to the present invention;

fig. 2 is a right side view of the central spindle of the semi-open impeller static balance weight removing device of the present invention.

The reference numerals are explained below:

1. a spline; 2. a round nut; 3. a four-jaw chuck; 4. a mandrel; 5. an impeller; 6. a chicken heart clip; 7. a top rod; 8. a tip hole; 9. and positioning the step.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1-2, the device for static balance and weight removal of the semi-open impeller in the embodiment includes a mandrel 4, a center hole 8, a four-jaw chuck 3 and a round nut 2, the four-jaw chuck 3 is disposed at one end of the mandrel 4, the center hole 8 is disposed at the other end of the mandrel 4, a post rod 7 is disposed on the center hole 8, a spline 1 is disposed at the middle of the mandrel 4, an impeller 5 is disposed on the spline 1, the round nut 2 is disposed at one side of the impeller 5, a positioning step 9 is disposed at the other side of the impeller 5, a chicken heart clamp 6 is disposed at one side of the mandrel 4 close to the center hole 8, through the design of the mandrel 4, the positioning step 9, the four-jaw chuck 3, the round nut 2 and the center hole 8, the device can perform static balance and weight removal operation on impellers 5 with different sizes, the application range of the device is increased, the whole device is light in weight and convenient to disassemble and greatly increase the static balance and, the practicability is good.

As shown in fig. 1-2, in this embodiment, a center hole 8 is formed on a mandrel 4, the center hole 8 is radially distributed from the axis of the mandrel 4 to the outer circle, the impeller 5 can be statically balanced and weight-removed by using the principle that the axis hole of the impeller 5 and the mandrel 4 are not concentric, the connecting portion of the mandrel 7 and the center hole 8 adopts a tapered structure, the mandrel 4 can be reliably pushed tightly, the mandrel 4 penetrates through a heart clamp 6, the heart clamp 6 has the prior art, and is mainly used for limiting the rotation freedom of the mandrel 4 so as to facilitate subsequent operations, the round nut 2 is screwed with the mandrel 4, the round nut 2 is a standard round nut in GB/T812, the impeller 5 can be reliably fixed, the spline 1 is connected with the mandrel 4 in a clamping manner, the spline 1 is an a-type key, the impeller 5 can be more reliably mounted, the mandrel 4 penetrates through the impeller 5, the impeller 5 is connected with the mandrel 4 through the spline 1 and the round nut 2, and the positioning step 9 is formed on the mandrel 4, so that the impeller 5 can be positioned and installed.

The specific implementation process of this embodiment is as follows: when in use, firstly, the impeller 5 is arranged on the mandrel 4 and is fixed by the round nut 2 and the spline 1, then one end of the mandrel 4 is fixed by the four-jaw chuck 3, the other end of the mandrel 4 is assembled on a central hole by the ejector rod 7, the other end of the mandrel 4 is clamped on the mandrel 4 by the chicken heart clamp 6 to limit the rotation freedom degree of the mandrel 4, then the impeller 5 is rotated to enable the impeller 5 and the mandrel 4 to roll gently towards one direction, the natural stop is carried out, the lowest point is marked, then the impeller 5 rolls in the opposite direction, the lowest point is marked, the operation is repeated for 3 to 4 times, the average marked position, namely the position of the impeller 5 without the balance weight, is taken, when the unbalanced position of the impeller 5 is determined, the four-jaw chuck 3 and the ejector rod 7 are loosened, the apical hole 8 at the right end of the mandrel 4 is adjusted to be the apical hole 8 in the same direction as the marked position, and the left end of the, carry out the car partially to the principle that utilizes impeller 5's shaft hole and 4 decentractions of dabber comes to carry out the static balance to impeller 5 and goes heavy operation, through dabber 4, location step 9, four-jaw chuck 3, the design of round nut 2 and apical pore 8, not only make the device can carry out the static balance to not unidimensional impeller 5 and go heavy operation, the application range of device has been improved, and the holistic light in weight of device, the dismouting is convenient, very big improvement the efficiency of 5 static balance weight removal processing of impeller, the practicality is good.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by the technical solution of the present invention by those skilled in the art should fall into the protection scope of the present invention, and the technical contents claimed by the present invention have been fully recorded in the claims.

Claims

1. The utility model provides a device that is used for semi-open impeller static balance to remove heavy which characterized in that: including dabber (4), apex hole (8), four-jaw chuck (3) and round nut (2), dabber (4) one end is provided with four-jaw chuck (3), dabber (4) other end is provided with apex hole (8), be provided with ejector pin (7) on apex hole (8), dabber (4) middle part is provided with spline (1), be provided with impeller (5) on spline (1), impeller (5) one side is provided with round nut (2), impeller (5) opposite side is provided with location step (9), be close to on dabber (4) apex hole (8) one side is provided with the heart of a chicken and presss from both sides (6).

2. The device for semi-open impeller static balance de-weighting according to claim 1, characterized in that: the center hole (8) is formed in the mandrel (4), and the center hole (8) is radially distributed from the axis of the mandrel (4) to the outer circle.

3. The device for semi-open impeller static balance de-weighting according to claim 1, characterized in that: the connecting part of the ejector rod (7) and the ejector tip hole (8) adopts a conical structure.

4. The device for semi-open impeller static balance de-weighting according to claim 1, characterized in that: the mandrel (4) penetrates through the chicken heart clamp (6).

5. The device for semi-open impeller static balance de-weighting according to claim 1, characterized in that: the round nut (2) is screwed with the mandrel (4), and the round nut (2) is a standard round nut in GB/T812.

6. The device for semi-open impeller static balance de-weighting according to claim 1, characterized in that: the spline (1) is connected with the mandrel (4) in a clamping and pressing mode, and the spline (1) is an A-shaped key.

7. The device for semi-open impeller static balance de-weighting according to claim 1, characterized in that: the core shaft (4) penetrates through the impeller (5), and the impeller (5) is connected with the core shaft (4) through the spline (1) and the round nut (2).

8. The device for semi-open impeller static balance de-weighting according to claim 1, characterized in that: the positioning step (9) is formed on the mandrel (4).