CN-224229529-U - Vacuum pipeline compensation fixing device for sintering furnace

Abstract

The utility model discloses a vacuum pipeline compensation fixing device for a sintering furnace, which comprises a mechanical pump set and a vacuum pump set, wherein the top of the mechanical pump set is fixedly connected with the vacuum pump set, and the top of the vacuum pump set is provided with a compensation component. The corrugated pipe body is connected with the vacuum pump set by the lower flange, the upper flange is connected with an external connecting pipeline, the supporting rods are arranged around the corrugated pipe body, resonance and damage caused by vibration among the pipelines can be removed by the telescopic capacity of the corrugated pipe body, the supporting rods are independently arranged around the corrugated pipe body, one end of each supporting rod is fixed with the upper flange by using an adjustable nut, the rubber buffer pad is arranged at the lower end of each supporting rod and is nested on the lower flange, and a certain movable buffer allowance is reserved, so that the corrugated pipe body is excessively deformed in the axial direction to form compensation due to the change of air pressure difference in the inner part and the outer part of the corrugated pipe body in the evacuating process, the service life of the corrugated pipe is prolonged, and meanwhile, corresponding damage caused by mutual vibration of the pump set in working is avoided.

Inventors

• LI ZHANHUI
• WANG HANBIN
• HOU BO
• ZHANG CHAO

Assignees

• 昇力恒(宁夏)真空科技股份公司

Dates

Publication Date

20260512

Application Date

20250515

Claims (5)

1. 1. The vacuum pipeline compensation fixing device for the sintering furnace comprises a mechanical pump set (1) and a vacuum pump set (2), and is characterized in that the top of the mechanical pump set (1) is fixedly connected with the vacuum pump set (2), a compensation component (3) is arranged at the top of the vacuum pump set (2), the compensation component (3) comprises a lower flange (301), a corrugated pipe body (302), an upper flange (303), a supporting rod (304) and a shock pad (305), the lower flange (301) is fixedly connected with the vacuum pump set (2) through bolts, the top of the lower flange (301) is fixedly connected with the corrugated pipe body (302), the top of the corrugated pipe body (302) is fixedly connected with the upper flange (303), a supporting rod (304) is arranged between the upper flange (303) and the lower flange (301), a shock pad (305) is sleeved at the bottom of the supporting rod (304), and nuts are connected on the circumferential surface of the supporting rod (304) in a threaded manner.
2. 2. The vacuum pipe compensation fixing device for a sintering furnace according to claim 1, wherein the bellows body (302) is a metal bellows.
3. 3. The vacuum pipe compensation fixing device for the sintering furnace according to claim 1, wherein the number of the shock pads (305) of the supporting rods (304) is four, and the shock pads are uniformly distributed around the corrugated pipe body (302).
4. 4. The vacuum pipeline compensation fixing device for the sintering furnace according to claim 1, wherein the top and the bottom of the supporting rod (304) are respectively inserted into the lower flange (301) and the upper flange (303), and the shock pad (305) is clamped with the lower flange (301).
5. 5. The vacuum pipe compensation fixing device for a sintering furnace according to claim 1, wherein the supporting rod (304) is fixedly connected with the upper flange (303) through a nut.

Description

Vacuum pipeline compensation fixing device for sintering furnace Technical Field The utility model relates to the technical field of high-temperature vacuum sintering furnaces, in particular to a vacuum pipeline compensation fixing device for a sintering furnace. Background When the high-temperature vacuum sintering furnace works, the inside is required to be vacuumized, along with the vacuumization, the pipeline connected with the vacuum pump and the sintering furnace is easy to generate axial and radial deformation, so that the connecting pipeline is generally connected in a compensating way by adopting a corrugated pipe, but the existing corrugated pipe can cause excessive compression in radial deformation along with the reduction of the vacuum degree in the evacuating process, and meanwhile, the two ends of the upper flange and the lower flange of the corrugated pipe can generate offset pulling force in the axial direction along with the reduction of the internal air pressure, so that the whole corrugated pipe is deformed, and the compensating damage, the pipeline welding and the fatigue damage of a fixed structure can be caused for a long time. Disclosure of utility model The utility model aims to provide a vacuum pipeline compensation fixing device for a sintering furnace, a corrugated pipe body is connected with a vacuum pump set by using a lower flange, an upper flange is connected with an external connecting pipeline, support rods are arranged around the corrugated pipe body, the telescopic capacity of the corrugated pipe body can remove resonance and damage caused by vibration among the pipelines, the support rods are arranged around the corrugated pipe body independently, one end of each support rod is fixed with the upper flange by using an adjustable nut, a rubber buffer pad is arranged at the lower end and is nested on the lower flange, and a certain movable buffer allowance is reserved, so that the corrugated pipe body is excessively deformed in the axial direction due to the change of air pressure difference in and out of the corrugated pipe body in the evacuation process to form compensation, the service life of the corrugated pipe is prolonged, and meanwhile, the corresponding damage caused by mutual vibration of the pump set in the working is avoided. In order to achieve the purpose, the vacuum pipeline compensation fixing device for the sintering furnace comprises a mechanical pump set and a vacuum pump set, wherein the top of the mechanical pump set is fixedly connected with the vacuum pump set, the top of the vacuum pump set is provided with a compensation assembly, the compensation assembly comprises a lower flange, a corrugated pipe body, an upper flange, a supporting rod and a shock pad, the lower flange is fixedly connected with the vacuum pump set through bolts, the top of the lower flange is fixedly connected with the corrugated pipe body, the top of the corrugated pipe body is fixedly connected with the upper flange, a supporting rod is arranged between the upper flange and the lower flange, the bottom of the supporting rod is sleeved with the shock pad, and a nut is connected to the circumferential surface of the supporting rod through threads. According to the vacuum pipeline compensation fixing device for the sintering furnace, the corrugated pipe body is a metal corrugated pipe. According to the vacuum pipeline compensation fixing device for the sintering furnace, the number of the damping pads of the supporting rods is four, and the damping pads are uniformly distributed around the corrugated pipe body. According to the vacuum pipeline compensation fixing device for the sintering furnace, the top and the bottom of the supporting rod are respectively connected with the lower flange and the upper flange in an inserting mode, and the shock pad is connected with the lower flange in a clamping mode. According to the vacuum pipeline compensation fixing device for the sintering furnace, the supporting rod is fixedly connected with the upper flange through a nut. The scheme has the beneficial effects that the lower flange, the corrugated pipe body, the upper flange, the supporting rods and the shock pads are arranged, the corrugated pipe body is connected with the vacuum pump set by the lower flange, the upper flange is connected with an external connecting pipeline, the supporting rods are arranged around the corrugated pipe body, resonance and damage caused by vibration between pipelines can be removed by the telescopic capacity of the corrugated pipe body, the supporting rods are independently arranged around the corrugated pipe body, one end of each supporting rod is fixed with the upper flange by the aid of the adjustable screw cap, the rubber buffer cushion is arranged at the lower end of each supporting rod, the rubber buffer cushion is nested on the lower flange, a certain movable buffer allowance is reserved, and accordingly the corrugated pipe body is deformed too much in