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Industry Information
The harsh environment of the dust level meter of the dust collector makes the measurement of its level difficult.
2012-4-9 10:21:43

:除尘仓的环境恶劣导致其料位的测量成为难题;普通的测量如阻旋式料位开关、振棒式料位开关、电容式料位开关等一般在使用三个月左右便处于半使用状态直至瘫痪而无法测量和控制。 Dust bin level meter : The harsh environment of the dust bin makes its level measurement difficult; ordinary measurements such as resistance level switch, vibrating rod level switch, and capacitive level switch are generally used for three months Left and right are in a semi-use state until they become paralyzed and cannot be measured and controlled. The reasons for its failure are summarized as follows: (1) At present, the measurement of the level meter of the dust removal bin is by way of side mounting, and the insertion depth of the side mounted level meter often cannot exceed one meter. Because when the insertion depth exceeds one meter, the powder accumulated in the warehouse will bend the inserted probe rod; (two) because the dust particles for dust removal are relatively small, it is most likely to form the internal hanging material in the warehouse; (c) the production process The dew condensation brought by this has made the powder materials in the warehouse serious with the rapid development of modern industry, and people have increased their awareness of environmental protection and energy conservation and emission reduction requirements. Therefore, the requirements for dust removal in modern industrial production are more stringent. The dust collectors in industrial production are divided into bag dust collectors, electric dust collectors, cyclones and centrifugal dust collectors. In large-scale industrial production, bag dust removal and electric dust removal are mostly used. . Bag dust removal is to permeate the dusty flue gas after combustion from the outer surface of the bag into the bag under the action of the induced draft fan. This process comes out of the cloth bag is clean smoke, which can be discharged to the high-altitude atmosphere through the chimney. The integrated dust outside the cloth bag was dropped into the dust bin by the back blow of pulsed compressed air. Electrostatic precipitator is a high-voltage electric field generated between the anode plate and the cathode line when a negative high-voltage direct current is applied between the body of the electrostatic precipitator as the anode plate (dust collecting plate) and the cathode (corona electrode). When the applied voltage is sufficiently high, a corona discharge is generated near the cathode line, and a large amount of electricity, negative ions, and positive ions are formed. When the dust-containing flue gas passes through the electric field, the dust absorbs ions or electrons and is charged. The charged dust moves to the opposite electrode under the action of the electric field force. It is deposited on its surface under the action and releases charges to the electrode plate, while the positively charged dust is also deposited on the cathode plate at the same time. The dust particles are separated.

测量仪的种类:在现代工业生产中,除尘仓料位仪主要有:(1)音叉式料位开关,(2)阻旋式料位开关,(3)振棒式料位开关,(4)电容式料位开关。 Types of measuring instrument for dust-removing silo level : In modern industrial production, the level measuring instrument for dust-removing silo mainly includes: (1) tuning fork-type level switch, (2) resistance rotary type level switch, (3) vibrating rod type material Position switch, (4) Capacitive level switch. According to the actual principle of separating dust and dust from the dust removal bin and the actual structure of various dust removal bins, most of the above-mentioned material level switches adopt the method of side-mounted high and low material level switches, but from the actual application effect, about 95% to 98% of the dust removal bins The material level control is in a semi-use state after being used for about three months until it becomes paralyzed and cannot be measured and controlled.

仪非正常使用分析:(一)现在除尘仓料位的测量是采用侧面安装的方式,而侧面安装的料位仪表的扞入深度往往不能超过一米以上。 Analysis of the abnormal use of the conventional dust removal bin level meter: (1) The measurement of the dust level in the dust bin is now installed on the side, and the penetration depth of the side mounted level meter cannot often exceed one meter. Because when the penetration depth exceeds one meter, the powder accumulated in the warehouse will bend the penetration probe. (2) According to the dust removal principle of the dust collector we explained above, especially the role of the dust in the electrostatic precipitator in the electric field force and the physical principle of positive and negative charge attraction, the negatively charged dust is firmly deposited on the anode plate (On the steel plate of the dust collector) to make it thicker and thicker. (3) Because the dust particles for dust removal are relatively small, it is most likely to form internal hanging materials in the bin. (4) The vibration strength of the dust removal bin is not enough, so that the accumulation of powder is thicker and thicker, and the feeding is slow. (5) The condensation caused by the production process makes the powder in the warehouse serious.