Superheated steam fixation device and method

A technology of superheated steam and degreening equipment, which is applied in lighting and heating equipment, steam superheating, steam generation, etc. It can solve the problems of high water content of tea, easy to stuffy yellow water, dull taste, and reduced quality of tea, so as to achieve uniform degreening and drying, The effect of enhancing heat transfer efficiency

Inactive Publication Date: 2020-12-15
MENGZHOU YUANHONG DRYING EQUIP RES & DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the greening equipment is steamed for tea leaves, the high-temperature steam in the saturated steam state contacts with fresh tea leaves, which will easily turn yellow and produce water

Method used

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  • Superheated steam fixation device and method
  • Superheated steam fixation device and method
  • Superheated steam fixation device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] like figure 1 , figure 2 , image 3 The shown superheated steam fixing equipment includes a fixing drying bin 1, a driving device 2, a supporting roller 3, a discharging device 4, a feeding device 5, an air duct 16, a steam device 19, an exhaust device 20, and a duct fan 18.

[0055] The diameter of the said finishing and drying bin 1 is 1200mm, and the length is 8000mm.

[0056] The said finishing drying bin 1 includes a drum, a raceway 6 , a gear ring 7 , and a helical blade 8 . The helical blade 8 is fixed on the inner drum body; the gear ring 7 and the raceway 6 are installed on the drum.

[0057] The roller 3 supports the raceway 6 , and the drying bin 1 rotates on the roller 3 driven by the driving device 2 .

[0058] The driving device 2 is a combination of a motor and a speed changer. The driving wheel of the speed changer of the driving device 2 is engaged to drive the gear teeth of the gear ring 7, and the gear ring 7 drives the drying chamber 1. rotati...

Embodiment 2

[0080] The similarities between the superheated steam fixing equipment of the second embodiment and the superheated steam fixing equipment introduced in the embodiment 1 will not be repeated.

[0081] like figure 1 , figure 2 , image 3 , Figure 4 The shown superheated steam fixing equipment includes a fixing drying bin 1, a driving device 2, a supporting roller 3, a discharging device 4, a feeding device 5, an air duct 16, a steam device 19, an exhaust device 20, a heat exchanger, and a pipeline fan. 18.

[0082] The exhaust device 20 is a Roots blower.

[0083] Said feeding device 12 is a screw feeder.

[0084] The similarities between the superheated steam fixing method of the present embodiment 2 and the superheated steam fixing method introduced in the embodiment 1 will not be repeated.

[0085] A kind of continuous superheated steam fixing method, its work flow is as follows:

[0086] The temperature of the superheated steam heated by the steam heater of the ste...

Embodiment 3

[0090] The similarities between the superheated steam fixing equipment of the present embodiment 3 and the superheated steam fixing equipment introduced in the embodiment 1 will not be repeated.

[0091] like figure 1 , figure 2 , image 3 , Figure 4 The shown superheated steam fixing equipment includes a fixing drying bin 1, a driving device 2, a supporting roller 3, a discharging device 4, a feeding device 5, an air duct 16, a steam device 19, an exhaust device 20, a heat exchanger, and a pipeline fan. 18.

[0092] The exhaust device 20 is a vacuum pump.

[0093] The conveying device 12 is a high air-tight discharge valve.

[0094] The similarities between the superheated steam fixing method of the present embodiment 3 and the superheated steam fixing method introduced in the embodiment 1 will not be repeated.

[0095] A kind of continuous superheated steam fixing method, its work flow is as follows:

[0096] The relative pressure in the drying warehouse 1 is -0.98M...

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Abstract

The invention discloses superheated steam fixation device. The superheated steam fixation device comprises a fixation drying bin, a driving device, a supporting wheel, a discharging device, a feedingdevice, a gas guide pipe, a steam device, an exhaust device and a pipeline fan. Tea leaves continuously enter and exit from the fixation drying bin through the feeding device and the discharging device, so that continuous superheated steam fixation drying is realized. Moisture generated during fixation drying of the tea leaves is heated by the steam device to become superheated steam, the superheated steam at 60-380 DEG C is used for carrying out heat transfer fixation and heat and mass transfer drying on the tea leaves in the fixation drying bin, the heat transfer efficiency of the superheated steam and the tea leaves is enhanced, the tea leaves are free of oxidation reaction in the superheated steam fixation drying process in the fixation drying bin, the fixation and color fixation effects of the tea leaves are good, and the tea leaves are uniformly fixed and dried. During fixation of the superheated steam, the surfaces of the tea leaves are wet, the drying stress is small, and the drying defects of burnt leaves, burnt edges, broken tea, water stuffy taste and the like are avoided. The tea leaves after fixation and drying of the superheated steam are soft and tough, and the subsequent rolling process is facilitated.

Description

technical field [0001] The present invention relates to an equipment and method for fixing green, in particular to an equipment and method for fixing green with superheated steam. Background technique [0002] At present, when the high-temperature steam tea is green-fixed by the steam-fixing equipment, the high-temperature steam is the heat carrier during the green-fixing process. When the green tea is steam-fixed by the green-fixing equipment, the high-temperature steam in the saturated steam state is in contact with the fresh tea leaves, which is easy to yellow and produce a watery smell, which leads to a decrease in the quality of the tea leaves. The steam-cured tea leaves have high water content and hard leaves, which is not conducive to the subsequent tea rolling process. Under the premise of ensuring the quality of tea greening, it is necessary to optimize the design of greening equipment to achieve the effect of improving quality and efficiency. SUMMARY OF THE INVE...

Claims

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Application Information

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IPC IPC(8): F26B11/06F26B21/10F26B21/14F26B25/00F26B25/02A23F3/06F22G1/16
CPCA23F3/06F22G1/16F26B11/0481F26B21/10F26B21/14F26B25/002F26B25/02
Inventor 程长青
Owner MENGZHOU YUANHONG DRYING EQUIP RES & DEV CO LTD
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