CN2859406Y

CN2859406Y - Desiccation controlling system for fluidized-bed

Info

Publication number: CN2859406Y
Application number: CN 200520097085
Authority: CN
Inventors: 黄小强
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-07-04
Filing date: 2005-07-04
Publication date: 2007-01-17
Anticipated expiration: 2015-07-04

Abstract

The utility model provides a fluidized bed drying control system, which is characterized in that the heating pipe and drying pipe of the fluidized bed drying apparatus is added with a device consisted of a temperature sensor, an amplifying processor, a speed controller and a feeding motor. The control system has the advantage of stable water content after regulating with no excess, high product quality, low cost and good economic benefit.

Description

The fluidized bed drying control system

Technical field

The utility model relates to chemical industry equipment, particularly relates to the fluidized bed drying control system.

Technical background

Present many industries are all dried powdered substance with fluid bed, it is the moisture content volatilization that makes when utilizing the hot blast material conveying in the material, utilize cyclone separator that water vapour, air and pressed powder are separated then, though this equipment is simple in structure, occupied ground is few, drying efficiency is than characteristics such as height, but it is constant to exist the heat transfer medium temperature to be hard to keep, rely on people's sense organ to judge the adjusting charging and have serious deviation and hysteresis, all be that to cause drying to go out the material water content unstable and exceed standard, have a strong impact on the shortcoming of product quality; At " State Intellectual Property Office " internet retrieval, the end is seen the patent application identical with the utility model.Through production practices, checking repeatedly, a kind of fluidized bed drying control system is provided, overcome the shortcoming of above-mentioned existence, solved and utilized the hot air temperature variation control charging motor speed of service to regulate charging rate, thereby reached the technical problem of required stable oven dry material water content.

Summary of the invention

The purpose of this utility model provides a kind of above-mentioned fluidized bed drying control system that has shortcoming that overcomes.

The utility model is achieved in that and installs a temperature sensor 7 that is connected with amplification processor 8 additional in the heat supply pipeline 1 of fluidized bed drying equipment or drying pipeline 3, be connected to speed setting controller 9 between amplification processor 8 and charging motor 10, charging motor 10 is directly controlled the charging rate of charger 6.

The utility model is than the advantage of original technology: control to adjust required oven dry material water content value stabilization, do not exceed standard, regulation and control accurately, the product quality height, cost is low, the economic benefit height.

Description of drawings

Accompanying drawing of the present utility model:

Fig. 1 is a structural representation of the present utility model, among the figure: 1. air heat exchanger (heat supply pipeline), 2. throwing machine, 3. oven dry is managed, 4. cyclone separator, 5. unloader, 6. charger, 7. temperature sensor, 8. amplification processor, 9. speed setting controller, 10. charging motor, arrow is represented: a. air intake, the outlet of b. air-steam, c. dry discharging, the d. charging aperture.

The specific embodiment

The utility model mainly is to utilize the hot air temperature after the air heat exchanger heating to change, the voltage signal that temperature sensor is produced, control speed setting controller charging rotating speed of motor, regulate charging motor charging rate through the amplification of amplification processor signal, output voltage, thereby reach the purpose of required stable oven dry material water content.

Below in conjunction with drawings and Examples realization the utility model is described further:

Referring to Fig. 1: the utility model is to install a device of being made up of temperature sensor 7, amplification processor 8, speed setting controller 9, charging motor 10 additional at the heat supply pipeline 1 of fluidized bed drying equipment or drying pipeline 3 and constitute.Described: 1.. temperature sensor 7 sensor ends are clavate, totally enclosed digital display thermometer, in variable resistor and bridge circuit are housed, temperature-measuring range is 0 ℃～400 ℃, 2.. amplification processor 8 is integrated amplifier plates, input voltage＜10V, output voltage 0.1～200V, non-linear distortion degree≤10%, 3.. speed setting controller 9 is buncher or the motor of being furnished with frequency converter, model specification and charging motor 10 are complementary, 4.. 70～1840 rev/mins of the voltage 50～380V of charging motor 10, rotating speeds; This control system is provided with overtemperature alarm, reports to the police when temperature surpasses setting value, avoids Yin Wendu too high and cause production accident.

Embodiment is seen Fig. 1: during this control system oven dry material, under the constant situation of air quantity, there is following relation in the water content after the oven dry thing drying with temperature, the inlet amount of hot-air: A when inlet amount is constant ₁=K ₁T (A ₁Be water content, K ₁Be the coefficient constant, t is a temperature), when hot-air temperature-resistant, A ₂=K ₂I (A ₂Water content, K ₂Be the coefficient constant, I is an inlet amount), water content is stable to remain on a certain value if require, and promptly sets A ₁=A ₂=coefficient constant, then K ₁T=K ₂I, t=K is arranged ₂/ K ₁I, expression temperature and inlet amount are proportional, according to this relation, as long as controlled condition satisfies t=K ₂/ K ₁I promptly can obtain a stable water content value, changes K ₂/ K ₁Can obtain another stable water content value, rotating speed that voltage signal, process amplification processor 8 signals amplify, output voltage control speed setting controller 9 is controlled charging motor 10 that so the temperature sensor 7 of device utilizes the hot air temperature after air heat exchanger 1 heating to change to be produced, regulate charging rate by charging motor rotation speed, thereby reach the purpose of required stable oven dry material water content.The utility model is than the advantage of original technology: control to adjust required oven dry material water content value stabilization, do not exceed standard, regulation and control accurately, the product quality height, cost is low, the economic benefit height.

Claims

1. fluidized bed drying control system, it is characterized in that installing a temperature sensor (7) that is connected with amplification processor (8) additional in heat supply pipeline (1) at fluidized bed drying equipment or the drying pipeline (3), be connected to speed setting controller (9) between amplification processor (8) and charging motor (10), charging motor (10) is directly controlled the charging rate of charger (6).

2. according to the control system of claim 1, it is characterized in that temperature sensor (7) sensor ends is clavate, totally enclosed digital display thermometer, in variable resistor and bridge circuit are housed, temperature-measuring range is 0 ℃～400 ℃.

3. according to the control system of claim 1, it is characterized in that amplification processor (8) is the integrated amplifier plate, input voltage＜10V, output voltage 0.1～200V, non-linear distortion degree≤10%.

4. according to the control system of claim 1, it is characterized in that speed setting controller (9) is buncher or the motor of being furnished with frequency converter, model specification and charging motor (10) are complementary.

5. according to the control system of claim 1, it is characterized in that 70～1840 rev/mins of voltage 50～380V, the rotating speeds of charging motor (10).