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Low temperature vacuum drier

A technology of low-temperature vacuum drying and vacuum pump, which is applied in local agitation dryers, static material dryers, dryers, etc. It can solve problems such as shortening the service life of vacuum pumps, increasing the gap between the impeller and the pump body, and affecting the quality of leather. Achieve superior performance, improve sealing performance, and reduce energy consumption

Active Publication Date: 2007-10-03
NANTONG SIRUI ENG
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

Since the gas and waste liquid enter the vacuum pump together, on the one hand, the circulating water of the vacuum pump is easy to vaporize, resulting in a decrease in vacuum; The gap reduces the vacuum degree and shortens the service life of the vacuum pump, which affects the quality of the leather. Therefore, it is necessary to improve the existing vacuum dryer to meet the needs of actual production.

Method used

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Embodiment Construction

[0017] With reference to accompanying drawing 1, accompanying drawing 2, a kind of low-temperature vacuum drier of the present invention comprises cover 1, worktable 2, frame 3, liquid receiving tank 4, drain tank 5, vacuum pump I6, vacuum pump II7, control System 8, control valve 9, post-stage condenser 10, safety device 11, oil cylinder 12, pre-stage condensing system 13, cover 1 and at least one layer of workbench 2 are airtight, and the workbench 2 of this embodiment It is designed as five floors, the cover 1 is hoisted on the frame 3, and the worktable 2 of each layer is hoisted on the frame 3 through the oil cylinder 12; the worktable 2 is connected with the liquid receiving tank 4, and the workbench 2 is connected with the heating system 14 connected, the liquid outlet of the liquid receiving tank 4 is connected with the liquid discharge tank 5 respectively, the exhaust port of the liquid receiving tank 4 is connected with the vacuum pump I6 and the vacuum pump II7 respe...

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Abstract

The low temperature vacuum drier for processing leather includes one cover on the machine frame, at least one layer of working board with heating element and vacuumizing ports and hoisted by means of oil cylinder onto the machine frame, one liquid collecting tank connected to the liquid draining grooves and connected to the vacuum pump, at least two safety devices on the uprights of the machine frame, one condensation system connected to the working board, one sealing cover below the working board, one cooling pipeline around the working board, and vacuum pump comprising oil circulating vacuum pump and Roots vacuum pump. The present invention has high vacuumizing capacity, lowered operation temperature, no damage on the leather tissue and raised quality of dried leather.

Description

technical field [0001] The invention relates to a leather processing equipment, in particular to a vacuum dryer for drying leather. Background technique [0002] After retrieving relevant patent documents, a low-temperature vacuum dryer with the same structure as the present invention has not yet been retrieved. In the tanning process, in order to further process the leather, it is necessary to remove moisture from the leather. Existing processing methods generally adopt a vacuum dryer for processing. The working temperature of known vacuum dryers is generally 80°C to 95°C. Due to the high temperature, the processed leather tissue is easily damaged, and the dried leather is hardened and stiff, thereby affecting the quality of the leather. And when the known vacuum dryer is working, the cover and the worktable form a vacuum chamber. In the vacuum chamber, the moisture evaporated from the leather, the residual liquid overflowing from the leather itself, and the residue left ...

Claims

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Application Information

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IPC IPC(8): F26B9/04F26B5/04
CPCC14B1/58
Inventor 张亚楠
Owner NANTONG SIRUI ENG
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