CN203264511U - Dry and wet composite type dust removing device based on control of PLC (Programmable Logic Controller) - Google Patents

Abstract

This utility model relates to a PLC-controlled dry-wet composite dust removal device, which includes a dry dust removal mechanism and a wet dust removal mechanism connected to the dry dust removal mechanism. A PLC control device is provided between the dry dust removal mechanism and the wet dust removal mechanism. This utility model includes a dry dust removal mechanism and a wet dust removal mechanism connected to the dry dust removal mechanism through a PLC control device. The PLC control device controls the coordinated working state between the dry dust removal mechanism and the wet dust removal mechanism, thereby realizing the dust removal operation of dust-laden gas. It has the advantages of simple structure, good dust removal effect and low energy consumption.

Description

A dry-wet compound dust removal device based on PLC control

technical field

The utility model relates to the technical field of industrial equipment, in particular to a dust removal device, in particular to a dry-wet composite dust removal device based on PLC control.

Background technique

In the process of industrial production, the waste gas and flue gas produced will contain a large amount of dust, which will cause great pollution to the environment if it is directly discharged into the atmosphere. Therefore, industrial waste gas and flue gas can only be discharged into the atmosphere after dust removal treatment. Most of the current air dust removal equipment adopts filter dust removal equipment, which is widely used in metallurgy, mining, building materials, casting, chemical industry, tobacco, electronics, asphalt, cement, Recycling and reuse of workshop dust purification body and dust-containing gas in machinery, grain, mechanical processing, boiler, flour production and other industries. However, these dedusting equipment generally can only perform one-stage dedusting or multi-stage repeated dedusting for flue gas or exhaust gas, and all have problems such as single function, complex mechanism, poor dedusting effect and high energy consumption.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a dry-wet compound dust removal device based on PLC control with simple structure, good dust removal effect and low energy consumption.

The purpose of this utility model is achieved in that:

A dry-wet composite dust removal device based on PLC control, comprising a dry dust removal mechanism and a wet dust removal mechanism connected to the dry dust removal mechanism, a PLC control device is arranged between the dry dust removal mechanism and the wet dust removal mechanism, the The dry dust removal mechanism described above includes a cyclone dust collector, the cyclone dust collector is connected to a gas collection hood through a pipeline, the lower part of the cyclone dust collector is provided with a dust collection cover, and the bottom of the dust collection hood is provided with an ash storage cylinder, and the lower part of the cyclone dust collector passes through The gas pipeline two is connected with an exhaust fan; the wet dust removal mechanism includes a wet dust collector, and the lower part of the wet dust collector communicates with the upper part of the cyclone dust collector through the gas pipeline one. The lower part of the liquid cover is provided with a discharge port, and the upper part of the wet dust collector is connected with the exhaust fan through the gas transmission pipeline 3; Dust sensor 1 in gas pipeline 1 between dust collectors, electromagnetic valve 2 in gas pipeline 2, dust sensor 2 in gas pipeline 2 between gas pipeline 2 and exhaust fan, and A controller to which solenoid valve 1, dust sensor 1, solenoid valve 2 and dust sensor 2 are all connected.

The lower part of the dust collecting hood is provided with a dust release valve.

A one-way stop valve is arranged between the wet dust collector and the liquid collection cover.

The second gas pipeline and the third gas pipeline are connected at the exhaust fan.

The wet dust collector includes a shell, which is provided with partitions that divide the interior of the shell into layers, each layer of shell is provided with filling cotton, and the top of the shell is provided with a high-pressure nozzle that communicates with a high-pressure water pipe.

The air outlet of the exhaust fan is provided with a muffler.

The partition is a grid-like structure.

The working principle of the utility model: start the exhaust fan, the dust-containing gas enters the cyclone dust collector through the gas collecting hood, and under the action of centrifugal force, the large particle dust is separated and enters the dust storage cylinder through the dust collecting hood; Under the action of negative pressure, the dust-laden gas enters the wet dust collector through the gas pipeline, and the dust such as small particles is removed in the wet dust collector. Under the negative pressure of the exhaust fan, the dedusted gas passes through the gas pipeline three and The exhaust fan discharges into the air. The dust in the wet dust collector is cleaned by spraying water through the high-pressure nozzle, and discharged to the outside through the liquid collection cover and the discharge port. During the whole process, the dust sensor 1 monitors the dust content of the gas in the gas transmission pipeline 1, and transmits the dust content data to the processor. Once the dust content of the gas in the gas transmission pipeline 1 is detected to be qualified, the controller Issue an order to close the electronic valve 1 and open the electronic valve 2, so that the wet dust collector stops working, and the dry dust collector completes the dust removal operation; otherwise, the electronic valve 2 is closed, and the solenoid valve is opened, and the dry and wet two-stage dust removal is implemented, thereby realizing dust removal automatic control.

The utility model has the following positive effects: the utility model includes a dry dust removal mechanism and a wet dust removal mechanism connected to the dry dust removal mechanism through a PLC control device. The PLC control device controls the coordinated working state between the dry dust removal mechanism and the wet dust removal mechanism, and then realizes the dust removal operation of the dusty gas. It has the advantages of simple structure, good dust removal effect and low energy consumption.

Description of drawings

Fig. 1 is a structural diagram of a dry-wet composite dust removal device based on PLC control of the present invention.

Fig. 2 is a structural schematic diagram of a partition of a dry-wet compound dust removal device based on PLC control.

Fig. 3 is a schematic diagram of a PLC control device of a dry-wet compound dust removal device based on PLC control.

In the figure: 1. Cyclone dust collector 2. Gas transmission pipeline 1 3. Dust collection hood 4. Ash release valve 5. Ash storage tank 6. Gas collection hood 7. Gas transmission pipeline 2 8. Controller 9. Solenoid valve 1 10 , dust sensor 1 11, dust sensor 2 12, solenoid valve 2 13, gas pipeline 3 14, exhaust fan 15, muffler 16, liquid collection cover 17, discharge port 18, dust-absorbing cotton 19, high-pressure nozzle 20, single To the stop valve 21, the partition 22, and the housing.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described further.

Example 1

As shown in Figure 1, Figure 2 and Figure 3, a dry-wet composite dust removal device based on PLC control includes a dry dust removal mechanism and a wet dust removal mechanism connected to the dry dust removal mechanism, and the dry dust removal mechanism is connected with the dry dust removal mechanism. A PLC control device is arranged between the wet dust removal mechanism, and the dry dust removal mechanism includes a cyclone dust collector 1, and the cyclone dust collector 1 is connected with a gas collection hood 6 through a pipeline, and a dust collection cover 3 is arranged at the bottom of the cyclone dust collector 1, The bottom of the dust collection cover 3 is provided with an ash storage tank 5, and the bottom of the cyclone dust collector 1 is connected with an exhaust fan 14 through the gas transmission pipeline 2 7; Pipeline one 2 communicates with the upper part of the cyclone dust collector 1, the lower part of the wet dust collector is provided with a liquid collection cover 16, and the lower part of the liquid collection cover 16 is provided with a discharge port 17, and the upper part of the wet dust collector is connected to the exhaust fan through the gas transmission pipe three 13 14 connected; the PLC control device includes a solenoid valve-9 arranged in the gas pipeline-2, a dust sensor-10 arranged in the gas pipeline-2 between the solenoid valve-9 and the cyclone dust collector 1, The solenoid valve two 12 arranged in the gas transmission pipeline two 7, the dust sensor two 11 arranged in the gas transmission pipeline two 7 between the gas transmission pipeline two 7 and the exhaust fan 14, and the electromagnetic valve one 9 and the dust sensor one 10 , the controller 8 to which the solenoid valve two 12 and the dust sensor two 11 are connected.

The working principle of the utility model: start the exhaust fan, the dust-containing gas enters the cyclone dust collector through the gas collecting hood, and under the action of centrifugal force, the large particle dust is separated and enters the dust storage cylinder through the dust collecting hood; Under the action of negative pressure, the dust-laden gas enters the wet dust collector through the gas pipeline, and the dust such as small particles is removed in the wet dust collector. Under the negative pressure of the exhaust fan, the dedusted gas passes through the gas pipeline three and The exhaust fan discharges into the air. The dust in the wet dust collector is cleaned by spraying water through the high-pressure nozzle, and discharged to the outside through the liquid collection cover and the discharge port. During the whole process, the dust sensor 1 monitors the dust content of the gas in the gas transmission pipeline 1, and transmits the dust content data to the processor. Once the dust content of the gas in the gas transmission pipeline 1 is detected to be qualified, the controller Issue an order to close the electronic valve 1 and open the electronic valve 2, so that the wet dust collector stops working, and the dry dust collector completes the dust removal operation; otherwise, the electronic valve 2 is closed, and the solenoid valve is opened, and the dry and wet two-stage dust removal is implemented, thereby realizing dust removal automatic control.

The utility model includes a dry dust removal mechanism and a wet dust removal mechanism connected with the dry dust removal mechanism through a PLC control device. The coordinated working state between the wet dust removal mechanisms, and then realize the dust removal operation of the dusty gas, has the advantages of simple structure, good dust removal effect and low energy consumption.

Example 2

As shown in Figure 1, Figure 2 and Figure 3, a dry-wet composite dust removal device based on PLC control includes a dry dust removal mechanism and a wet dust removal mechanism connected to the dry dust removal mechanism, and the dry dust removal mechanism is connected with the dry dust removal mechanism. A PLC control device is arranged between the wet dust removal mechanism, and the dry dust removal mechanism includes a cyclone dust collector 1, and the cyclone dust collector 1 is connected with a gas collection hood 6 through a pipeline, and a dust collection cover 3 is arranged at the bottom of the cyclone dust collector 1, The bottom of the dust collection cover 3 is provided with an ash storage tank 5, and the bottom of the cyclone dust collector 1 is connected with an exhaust fan 14 through the gas transmission pipeline 2 7; Pipeline one 2 communicates with the upper part of the cyclone dust collector 1, the lower part of the wet dust collector is provided with a liquid collection cover 16, and the lower part of the liquid collection cover 16 is provided with a discharge port 17, and the upper part of the wet dust collector is connected to the exhaust fan through the gas transmission pipe three 13 14 connected; the PLC control device includes a solenoid valve-9 arranged in the gas pipeline-2, a dust sensor-10 arranged in the gas pipeline-2 between the solenoid valve-9 and the cyclone dust collector 1, The solenoid valve two 12 arranged in the gas transmission pipeline two 7, the dust sensor two 11 arranged in the gas transmission pipeline two 7 between the gas transmission pipeline two 7 and the exhaust fan 14, and the electromagnetic valve one 9 and the dust sensor one 10 , the controller 8 to which the solenoid valve two 12 and the dust sensor two 11 are connected.

The lower part of the dust collecting hood 3 is provided with a dust release valve 4 .

A one-way stop valve 20 is provided between the wet dust collector and the liquid collection cover 16 .

The second gas pipeline 7 and the third gas pipeline 13 are communicated at the exhaust fan 14 .

The wet dust collector includes a housing 22, which is provided with partitions 21 that divide the interior of the housing 22 into layers, and each layer of housing 22 is provided with filling cotton 18, and the top of the housing 22 is provided with There is a high-pressure nozzle 19 communicated with the high-pressure water pipe.

The air outlet of the exhaust fan 14 is provided with a muffler 15 .

The partition 21 is a grid-like structure.

The working principle of the utility model: start the exhaust fan, the dust-containing gas enters the cyclone dust collector through the gas collecting hood, and under the action of centrifugal force, the large particle dust is separated and enters the dust storage cylinder through the dust collecting hood; Under the action of negative pressure, the dust-laden gas enters the wet dust collector through the gas pipeline, and the dust such as small particles is removed in the wet dust collector. Under the negative pressure of the exhaust fan, the dedusted gas passes through the gas pipeline three and The exhaust fan discharges into the air. The dust in the wet dust collector is cleaned by spraying water through the high-pressure nozzle, and discharged to the outside through the liquid collection cover and the discharge port. During the whole process, the dust sensor 1 monitors the dust content of the gas in the gas transmission pipeline 1, and transmits the dust content data to the processor. Once the dust content of the gas in the gas transmission pipeline 1 is detected to be qualified, the controller Issue an order to close the electronic valve 1 and open the electronic valve 2, so that the wet dust collector stops working, and the dry dust collector completes the dust removal operation; otherwise, the electronic valve 2 is closed, and the solenoid valve is opened, and the dry and wet two-stage dust removal is implemented, thereby realizing dust removal automatic control.

The utility model includes a dry dust removal mechanism and a wet dust removal mechanism connected with the dry dust removal mechanism through a PLC control device. The coordinated working state between the wet dust removal mechanisms, and then realize the dust removal operation of the dusty gas, has the advantages of simple structure, good dust removal effect and low energy consumption.

Claims (7)

1. A dry-wet composite dedusting device based on PLC control, comprising a dry dedusting mechanism and a wet dedusting mechanism connected with the dry dedusting mechanism, characterized in that: the dry dedusting mechanism and the wet dedusting mechanism are arranged There is a PLC control device, the dry dust removal mechanism includes a cyclone dust collector, the cyclone dust collector is connected to a gas collection hood through a pipeline, the lower part of the cyclone dust collector is provided with a dust collection hood, and the bottom of the dust collection hood is provided with an ash storage cylinder, The lower part of the cyclone dust collector is connected with an exhaust fan through the second gas pipeline; the wet dust removal mechanism includes a wet dust collector, and the lower part of the wet dust collector communicates with the upper part of the cyclone dust collector through the first air pipeline, and the lower part of the wet dust collector is set There is a liquid collection cover, the lower part of the liquid collection cover is provided with a discharge port, and the upper part of the wet dust collector is connected to the exhaust fan through the gas transmission pipeline three; the PLC control device includes a solenoid valve arranged in the gas transmission pipeline one. The dust sensor 1 in the gas pipeline 1 between the solenoid valve 1 and the cyclone dust collector, the solenoid valve 2 in the gas pipeline 2, and the gas pipeline 2 between the gas pipeline 2 and the exhaust fan The dust sensor two and the controller connected with the solenoid valve one, the dust sensor one, the solenoid valve two and the dust sensor two. 2. A dry-wet compound dust removal device based on PLC control according to claim 1, characterized in that: the lower part of the dust collection hood is provided with a dust release valve. 3. A dry-wet compound dust removal device based on PLC control according to claim 1, characterized in that: a one-way stop valve is arranged between the wet dust collector and the liquid collection cover. 4. A dry-wet compound dust removal device based on PLC control according to claim 1, characterized in that: said gas transmission pipeline 2 and gas transmission pipeline 3 are connected at the exhaust fan. 5. A dry-wet compound dust removal device based on PLC control according to claim 1, characterized in that: said wet dust collector comprises a housing, and the housing is provided with partitions that divide the inside of the housing into layers. Each shell is provided with filling cotton, and the top of the shell is provided with a high-pressure nozzle communicated with a high-pressure water pipe. 6. A dry-wet compound dust removal device based on PLC control according to claim 1, characterized in that: the air outlet of the exhaust fan is provided with a muffler. 7. A dry-wet compound dust removal device based on PLC control according to claim 5, characterized in that: the partition is a grid-like structure.

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