Emergency fire extinguishing device in xanthate drying process

Abstract

According to the emergency fire extinguishing device in the xanthate drying process, a plurality of temperature sensors are arranged in an inner cavity of a crawler-type drying machine, the liquid inlet end of a cleaning control valve of the crawler-type drying machine is further connected with a fire fighting water automatic control valve, and a feeding control valve is arranged at the feeding end of the crawler-type drying machine; a heating system of the crawler-type drying machine is provided with a heating medium inlet and outlet automatic control valve, and the cleaning liquid automatic control valve, the crawler-type drying machine cleaning control valve, the fire-fighting water automatic control valve, the feeding control valve and the heating medium inlet and outlet automatic control valve are all interlocked with a temperature sensor. When xanthate is dried by the crawler-type drying machine, the xanthate is decomposed and the temperature continuously rises, feeding and heating are stopped emergently, and cooling and flushing treatment is carried out, so that the production safety is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a chemical equipment technical field, specifically point to a kind of emergency fire extinguishing device in xanthate drying process. BACKGROUND

[0002] Xanthate, chemical name is xanthate, is a commonly used ore-dressing reagent, it is light yellow powder or granular material at normal temperature, with pungent smell, toxic, it is hygroscopic, unstable, easy to deliquesce when meeting water, easy to decompose when meeting heat, decomposition product is alcohol and carbon disulfide, and the two substances can spontaneously combust even explode when reaching certain temperature in oxygen.

[0003] Xanthate drying process uses caterpillar type drying machine under closed condition, and caterpillar type drying machine is composed of feeding system, heating system, caterpillar transmission system, discharging system, vacuum system, cleaning-in-place system and control system, and cleaning-in-place system is internally recycled by a fixed cleaning solvent tank and cleaning pump, cleaning solvent amount is basically fixed, and it is generally online cleaning during parking, and the cleaning-in-place system is not allowed to use during normal production.

[0004] Therefore, the existing xanthate caterpillar type drying machine does not design emergency cooling fire extinguishing device, and there is a certain safety production hidden danger if xanthate decomposes and temperature continuously increases. SUMMARY

[0005] The utility model wants to solve technical problem: solve the problems existing in the prior art, and provide a kind of emergency fire extinguishing device in xanthate drying process, when xanthate decomposes and temperature continuously increases when original caterpillar type drying machine is carried out xanthate drying, emergency stop feeding and carry out cooling treatment, guarantee the safety of production.

[0006] The utility model employs the technical scheme: a kind of emergency fire extinguishing device in xanthate drying process, including the cleaning-in-place system of caterpillar type drying machine, feeding system and heating system, the cleaning-in-place system includes the cleaning liquid input pipe, cleaning liquid automatic control valve, caterpillar type drying machine cleaning control valve and cleaning medium inlet and outlet pipe connected in sequence, cleaning medium inlet and outlet pipe is installed in caterpillar type drying machine inner chamber and has cleaning medium ejection hole;Multiple temperature sensors are provided in the inner chamber of caterpillar type drying machine, and the water outlet pipe of fire-fighting water automatic control valve is further connected to the liquid inlet end of caterpillar type drying machine cleaning control valve, the water inlet pipe of fire-fighting water automatic control valve is connected to fire-fighting water faucet, and the feeding control valve is provided in the feeding system of caterpillar type drying machine, and the feeding control valve, cleaning liquid automatic control valve, caterpillar type drying machine cleaning control valve and fire-fighting water automatic control valve are interlocked with temperature sensor.

[0007] In the above technical solution, the multiple temperature sensors are respectively installed in various sections of the inner cavity of the tracked dryer from feeding to discharging.

[0008] In the above technical solution, the heating system of the tracked dryer is equipped with an automatic control valve for the inlet and outlet of the heating medium, which is interlocked with the temperature sensor.

[0009] This invention incorporates multiple temperature sensors within a sealed crawler-type dryer cavity. Firefighting water is introduced into the cleaning system. When an anomaly occurs during the drying process of xanthate within the sealed crawler-type dryer, causing decomposition and a continuous temperature rise until a set temperature limit is reached, the temperature sensors output a high-temperature limit signal to the control system. The control system then outputs a control signal to open the automatic firefighting water control valve and close the automatic cleaning fluid control valve and feed control valve of the crawler-type dryer. Firefighting water enters the crawler-type dryer to extinguish the fire, cool it down, and clean the crawler belt, preventing fire accidents and ensuring production safety. This invention overcomes the fire safety design deficiencies of existing crawler-type dryers, improves safety performance, and has beneficial effects. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Attached image captions:

[0012] 1-Temperature sensor, 2-Cleaning fluid input pipe, 3-Cleaning fluid automatic control valve, 4-Cleaning control valve for tracked dryer, 5-Fire hydrant, 6-Fire water automatic control valve, 7-Feed control valve, 8-Heat exchange plate for tracked dryer, 9-Track, 10-Tracked dryer, 11-Track running motor drive shaft, 12-Track driven wheel, 13-Discharge tank, 14-Vacuum gauge, 15-Heating medium inlet / outlet pipe, 16-Cleaning medium inlet / outlet pipe, 17-Automatic control valve for heating medium inlet / outlet. Detailed Implementation

[0013] See Figure 1The utility model discloses a caterpillar type drying machine's on -the -spot cleaning system, the on -the -spot cleaning system includes the cleaning fluid input pipe 2 of connection in proper order, cleaning fluid automatic control valve 3, caterpillar type drying machine cleaning control valve 4 and cleaning medium inlet and outlet pipe 16, and cleaning medium inlet and outlet pipe 16 is installed in the inner chamber of caterpillar type drying machine 10 and has cleaning medium ejection hole, be equipped with multiple temperature sensor 1 in the inner chamber of caterpillar type drying machine, and the water outlet pipe of fire -fighting water automatic control valve 6 is also connected to the liquid inlet end of caterpillar type drying machine cleaning control valve 4, and the water inlet pipe of fire -fighting water automatic control valve 6 is connected fire hydrant 5, and be equipped with feed control valve 7 in the feed system of caterpillar type drying machine, multiple temperature sensor 1 is divided and is arranged in the inner chamber of caterpillar type drying machine 10 from the each section of feed to discharge, multiple temperature sensor 1 is connected the input end of control system, and the output end of control system is connected and controls fire -fighting water inlet automatic control valve 6 and feed control valve 7.Feed control valve 7, cleaning fluid automatic control valve 3, caterpillar type drying machine cleaning control valve and fire -fighting water automatic control valve 6 are interlocked with temperature sensor 1, in addition, the heating medium inlet and outlet automatic control valve of caterpillar type drying machine heating system is also interlocked with temperature sensor. Embodiment

[0014] 1, in caterpillar type drying machine set up 3 temperature sensors, and set the highest allowable temperature, this temperature sets two values, one is to reach the set high temperature H and lasts alarm, to remind the operating personnel temperature has exceeded the process control index, must pay attention to promptly handle. One is to reach the set high high temperature HH, and the alarm system lasts alarm under the condition of no manual intervention with another urgent sound, and emergency fire extinguishing device starts;

[0015] 2, automatically close feed control valve, and the system does not feed again;

[0016] 3, close the heating medium inlet and outlet automatic control valve on the heating medium inlet and outlet pipe, and the system does not continue heating;

[0017] 4, when the cleaning fluid automatic control valve is normal, it is in off state, when temperature sensor reaches HH high set value, check whether the cleaning fluid automatic control valve is in off state, if not, automatically shut down, open fire -fighting water automatic control valve, open caterpillar type drying machine cleaning control valve;

[0018] 5, fire -fighting water starts to flush and cool down the inner chamber of caterpillar type drying machine.

Claims

1. An emergency fire extinguishing device in the drying process of xanthate, characterized in that: The in-situ cleaning system of the caterpillar dryer comprises a cleaning liquid input pipe, a cleaning liquid automatic control valve, a caterpillar dryer cleaning control valve and a cleaning medium input and output pipe connected in sequence, the cleaning medium input and output pipe is installed in the inner cavity of the caterpillar dryer and has cleaning medium spray holes; a plurality of temperature sensors are arranged in the inner cavity of the caterpillar dryer, a water outlet pipe of a fire-fighting water automatic control valve is further connected to the liquid inlet end of the caterpillar dryer cleaning control valve, the water inlet pipe of the fire-fighting water automatic control valve is connected to a fire-fighting water faucet, a feeding control valve is arranged in the feeding system of the caterpillar dryer, and the feeding control valve, the cleaning liquid automatic control valve, the caterpillar dryer cleaning control valve and the fire-fighting water automatic control valve are interlocked with the temperature sensors.

2. The emergency fire extinguishing device in the drying process of xanthate according to claim 1, characterized in that: The plurality of temperature sensors are arranged in different sections of the inner cavity of the caterpillar dryer from feeding to discharging.

3. The emergency fire extinguishing device in the drying process of xanthate according to claim 1, characterized in that: A heating medium input and output automatic control valve is arranged in the heating system of the caterpillar dryer, and the heating medium input and output automatic control valve is interlocked with the temperature sensors.

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