CN106321444A - High-precision dynamic balance device used for roots blower impeller - Google Patents

Abstract

The invention discloses a high-precision dynamic balancing device for the impeller of a Roots blower, which includes an impeller and a balancing device, the balancing device is installed on both sides of the impeller, a cavity and a first through hole are arranged in the impeller, and the two sides of the impeller There is a concave notch on the side, and the notch is connected with the balance device. The balance device includes a balance bottom plate, a load ring and a second through hole. The top of the balance bottom plate is also movably connected with the concave notch. The connection hole and the second connection hole are provided with grooves in the load ring; the high-precision dynamic balance device of the Roots blower impeller includes the impeller and the balance device. Uneven, when the balance device rotates to a certain angle, the dynamic balance of the impeller meets the requirements, and then the balance device is fixedly connected to the impeller, the operation is simple and convenient, no need to disassemble the impeller, reducing the workload, and does not affect the shape of the impeller.

Description

A high-precision dynamic balancing device for Roots blower impeller

technical field

The invention relates to the technical field of Roots blower, in particular to a high-precision dynamic balancing device for the impeller of the Roots blower.

Background technique

Roots blower, also known as Roots blower, is a volumetric rotary blower, a rotary compressor that uses two or three leaf-shaped rotors to move relative to each other in the cylinder to compress and deliver gas. The Roots blower impeller is the core of the fan. Parts, if the dynamic balance exceeds the standard during high-speed rotation, it will cause large vibration of the unit and reduce the service life of the bearing, and cause major safety accidents if it is heavy. method to make the dynamic balance of the impeller meet the standard. The general dynamic balance process is as follows. The general dynamic balance process basically requires multiple calibrations, so it is often necessary to disassemble the impeller multiple times to drill holes to remove the weight. Although the dynamic balance calibration can be achieved by this method Dynamic balance is required, but it destroys the original shape and structure of the impeller rotor and affects the appearance. At the same time, the processing procedures and workload are large, and the operation process is complicated.

Contents of the invention

The purpose of the present invention is to provide a high-precision dynamic balancing device for the impeller of Roots blower, which has the advantages of simple and convenient operation, simple operation and no influence on the shape, and solves the problems in the prior art.

In order to achieve the above object, the present invention provides the following technical solutions: a high-precision dynamic balancing device for the Roots blower impeller, including an impeller and a balancing device, the balancing device is installed on both sides of the impeller, and the inside of the impeller is provided with a hollow The cavity and the first through hole, the cavity is located on the outside of the first through hole, the first through hole is connected with a transmission shaft, the transmission shaft is located on the inside of the impeller, and concave spigots are provided on both sides of the impeller, and the concave The balance device is connected with a spigot; the balance device includes a balance base plate, a load ring and a second through hole, the second through hole is located at the center of the balance device, the bottom of the load ring is fixedly connected to the balance base plate, and the balance base plate The top is also movably connected with the concave spigot, the balance bottom plate is in the shape of a round cake, the balance bottom plate is provided with a first connection hole and a second connection hole, and the first connection hole and the second connection hole are respectively located on both sides of the load ring , the load ring is hollow cylindrical, the load ring includes a first load ring and a second load ring, the first load ring is located inside the second load ring, a groove is formed between the first load ring and the second load ring, The bottom of the groove is connected with the balance base plate, and the balance base plate is connected with the impeller.

Preferably, both the first load-bearing ring and the second load-bearing ring extend into the concave notch.

Preferably, both the first connection hole and the second connection hole are circular through holes, and the diameter of the first connection hole is the same as that of the second connection hole.

Preferably, the cross-section of the groove is elliptical, and the center of the groove is located on one side of the center of the load-bearing ring.

Preferably, the weight distribution of the balancing device is uneven, and the balancing device is connected to the impeller by screws.

Compared with the prior art, the beneficial effects of the present invention are as follows: the high-precision dynamic balancing device of the Roots blower impeller includes the impeller and the balancing device, the two sides of the impeller are provided with concave notches, and the weight distribution of the balancing device is uneven , when the balance device rotates to a certain angle, the dynamic balance of the impeller meets the requirements, and then the balance device is fixedly connected to the impeller, the operation is simple and convenient, and the impeller does not need to be disassembled, which reduces the workload and does not affect the shape of the impeller.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic top view of the present invention;

Fig. 3 is an installation effect diagram of the present invention.

In the figure: 1 impeller, 11 cavity, 12 first through hole, 13 concave seam, 2 balance device, 21 balance bottom plate, 211 first connection hole, 212 second connection hole, 22 load ring, 221 first load Ring, 222 second load rings, 223 grooves, 23 second through holes, 3 transmission shafts.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figure 1-3, a high-precision dynamic balancing device for Roots blower impeller, including impeller 1 and balancing device 2, the balancing device 2 is installed on both sides of the impeller 1, and the interior of the impeller 1 is provided with a cavity 11 and the first through hole 12, the cavity 11 is set to reduce the weight of the impeller 1 and reduce power consumption, the cavity 11 is located outside the first through hole 12, the first through hole 12 is connected with the transmission shaft 3, and the transmission shaft 3 is equipped with key, the rotation of the transmission shaft 3 drives the rotation of the impeller 1, and the rotation of the impeller 1 completes the suction and exhaust process. The transmission shaft 3 is located on the inner side of the impeller 1. There is a threaded hole, and the concave spigot 13 is circular on the side of the impeller 1, and the concave spigot 13 is connected to the balance device 2 by screws; the weight distribution of the balance device 2 is uneven, and the balance device 2 is connected to the impeller by screws 1. The balance device 2 includes a balance base plate 21, a load ring 22 and a second through hole 23. The second through hole 23 is located at the center of the balance device 2. The second through hole 23 connects the balance base plate 21 and the load ring 22. The load ring 22 The bottom of the balance base plate 21 is fixedly connected to the top of the balance base plate 21, and the top of the balance base plate 21 is also flexibly connected with the concave notch 13. The balance base plate 21 is in the shape of a round cake, and the balance base plate 21 is provided with a first connection hole 211 and a second connection hole 212 , the first connecting hole 211 and the second connecting hole 212 are circular through holes, the first connecting hole 211 and the second connecting hole 212 are evenly distributed on the balance base plate 21, the first connecting hole 211 and the second connecting hole 212 are respectively Located on both sides of the load ring 22, the load ring 22 is hollow cylindrical, the load ring 22 includes a first load ring 221 and a second load ring 222, the first load ring 221 is located inside the second load ring 222, the first load ring 221 and the second load ring 222 all extend into the concave spigot 13, a groove 223 is formed between the first load ring 221 and the second load ring 222, the cross section of the groove 223 is ellipse, and the center of circle of the groove 223 Located on one side of the center of the load ring 22, the bottom of the groove 223 is connected to the balance base plate 21, because the load ring 22 is provided with an eccentric groove 223, which causes the center of gravity of the load ring 22 to shift, that is, the weight distribution of the balance device 2 Uneven, the diameter of the first connection hole 211 on the balance base plate 21 is the same as the diameter of the second connection hole 212, the screw connects the balance device 2 to the impeller 1, and the balance device 2 can rotate along the axis of the center of gravity of the impeller 1 When it is necessary to adjust the balance of the impeller 1, turn the balance device 2. When the balance device 2 rotates to a certain angle, the dynamic balance of the impeller 1 can meet the requirements, and then the balance device 2 is fixedly connected to the impeller 1 with screws, which is simple and convenient. The impeller 1 does not need to be disassembled, the original shape and structure of the impeller 1 will not be damaged, the appearance will not be affected, and the processing procedures and workload brought about by disassembling the impeller 1 will be reduced.

The high-precision dynamic balancing device for the Roots blower impeller includes impeller 1 and balancing device 2. The balancing device 2 is installed on both sides of the impeller 1. On both sides of the impeller 1, there are concave notches 13 and concave notches 13. There is a threaded hole, and the concave spigot 13 is in the shape of a ring on the side of the impeller 1. The concave spigot 13 is connected to the balance device 2 by screws. The center of gravity of the load ring 22 on the balance device 2 is not at the center of the circle, that is, the balance The weight distribution of the device 2 is uneven, and the balance device 2 can rotate along the axis of the center of gravity of the impeller 1. When it is necessary to adjust the balance of the impeller 1, turn the balance device 2. When the balance device 2 rotates to a certain angle, the dynamic balance of the impeller 1 can be satisfied. Requirements, and then use screws to fix the balance device 2 to the impeller 1, which is simple and convenient, without dismantling the impeller 1, will not damage the original shape and structure of the impeller 1, will not affect the appearance, and reduce the cost of disassembling the impeller 1. processing steps and workload.

To sum up: The high-precision dynamic balancing device for the impeller of Roots blower includes impeller 1 and balancing device 2. The two sides of impeller 1 are provided with concave notches 13, and the weight distribution of balancing device 2 is uneven. When the balancing device 2 When rotating to a certain angle, the dynamic balance of the impeller 1 meets the requirements, and then the balance device 2 is fixedly connected to the impeller 1. The operation is simple and convenient, and the impeller 1 does not need to be disassembled, which reduces the workload and does not affect the shape of the impeller 1.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (5)

1. A high-precision dynamic balancing device for Roots blower impeller, including impeller (1) and balancing device (2), the balancing device (2) is installed on both sides of the impeller (1), characterized in that: The interior of the impeller (1) is provided with a cavity (11) and a first through hole (12), the cavity (11) is located outside the first through hole (12), and the first through hole (12) is connected with a transmission shaft ( 3), the transmission shaft (3) is located on the inner side of the impeller (1), and a concave notch (13) is provided on both sides of the impeller (1), and the notch notch (13) is connected to the balance device (2); The balance device (2) includes a balance base plate (21), a load ring (22) and a second through hole (23), the second through hole (23) is located at the center of the balance device (2), and the load ring ( The bottom of 22) is fixedly connected with the balance bottom plate (21), and the top of the balance bottom plate (21) is also flexibly connected with the concave notch (13). The balance bottom plate (21) is in the shape of a round cake, and There are a first connection hole (211) and a second connection hole (212), the first connection hole (211) and the second connection hole (212) are respectively located on both sides of the load ring (22), and the load ring (22) is hollow Cylindrical, the load ring (22) includes a first load ring (221) and a second load ring (222), the first load ring (221) is located inside the second load ring (222), and the first load ring ( A groove (223) is formed between 221) and the second load ring (222), the bottom of the groove (223) is connected to the balance bottom plate (21), and the balance bottom plate (21) is connected to the impeller (1). 2. A high-precision dynamic balancing device for Roots blower impeller according to claim 1, characterized in that: both the first load ring (221) and the second load ring (222) extend into the concave inside the shaped seam (13). 3. A high-precision dynamic balancing device for Roots blower impeller according to claim 1, characterized in that: the first connecting hole (211) and the second connecting hole (222) are circular through The diameter of the first connection hole (211) is the same as that of the second connection hole (222). 4. A high-precision dynamic balancing device for Roots blower impeller according to claim 1, characterized in that: the cross section of the groove (223) is an ellipse, and the center of the groove (223) is located at One side of the center of circle of load ring (22). 5. A high-precision dynamic balancing device for Roots blower impeller according to claim 1, characterized in that: the weight distribution of the balancing device (2) is uneven, and the balancing device (2) is connected to the impeller by screws (1).