CN204502649U - A kind of spray air dust arrester - Google Patents

Abstract

The present invention discloses a spray-type air dedusting device, which comprises a ventilation duct, a dust drop assembly and a water supply tank which are sequentially arranged from top to bottom. There are a number of water mist nozzles distributed along the inner wall of the ventilation duct. The water mist nozzles are connected to the water pump installed in the water supply tank through a high-pressure water pipe. The inner wall of the ventilation duct is also provided with a number of removable filter sieve plates at intervals. The lower end of the filter sieve plate is connected to the dust collector. Components, dust drop components include dust collection pipes, dust collection boxes and filter boxes arranged in sequence. The dust collection pipes and ventilation pipes are airtightly connected at the joints. The lower end of the filter box is connected to the water supply tank, and the dust after the water mist settles is filtered The water filtered by the tank flows into the water supply tank for secondary use. The new spray type air dedusting device is simple in design, easy to use, low in energy consumption, recyclable sewage, environmental protection and energy saving, will not cause secondary pollution, and has a wide range of applications.

Description

A spray type air dust removal device

technical field

The utility model relates to the field of air dust removal devices, in particular to a spray type air dust removal device.

Background technique

In places where powder materials are used, the exhaust of the workplace needs to be treated with powder dust removal first. The existing dust removal mainly includes pulse bag dust removal. The principle is: the dust-laden gas enters the ash hopper from the air inlet. Expansion, some of the coarser dust particles fall into the ash hopper due to inertia or natural settlement, and most of the other dust particles rise with the airflow and enter the bag room. After being filtered by the filter bag, the dust particles are retained on the outside of the filter bag. The gas enters the upper box from the inside of the filter bag, and then is discharged into the atmosphere through the valve plate hole and the exhaust port, so as to achieve the purpose of dust removal. As the filtration continues, the resistance of the dust collector also rises. When the resistance reaches a certain value, the dust removal controller will issue a dust removal command, firstly close the lift valve plate, and cut off the filtered air flow; then, the dust removal controller will pulse The solenoid valve sends out a signal, and the pulse valve sends the high-pressure reverse airflow used for dust removal into the bag, and the filter bag swells rapidly and produces strong vibrations, causing the dust outside the filter bag to shake off to achieve the purpose of dust removal.

However, this dust removal device has the following defects: a. The unit volume of the dust removal device is large, the structure is complex, and it occupies the space of the place of production, which is not easy to use in the existing production environment; b. It has certain requirements for the environment and space. Carrying dust has strong hygroscopicity, which often causes the filter bag to stick and block the filter material.

At the same time, for the existing bag filter of the same type, when checking and replacing the filter bag, it is necessary to enter the box for replacement, which poses a certain threat to the safety of the operator.

Utility model content

The technical problem solved by the utility model is to provide a spray-type air dust removal device with simple structure, convenient use and good dust removal effect for the defects in the prior art.

The technical scheme adopted by the utility model is as follows: a spray type air dedusting device, including a ventilation duct, a dust drop assembly and a water supply tank arranged sequentially from top to bottom, the air inlet and the exhaust port of the ventilation duct are provided with The exhaust fan for extracting dust-laden air has a number of water mist nozzles distributed along the inner wall of the ventilation duct, and the water mist nozzles are connected to the water pump through a high-pressure water pipe. The lower end of the filter sieve plate is connected to the dust drop assembly, the dust drop assembly includes a dust collection pipeline, a dust collection box and a filter box arranged in sequence, and the dust collection pipeline and the ventilation pipeline maintain an airtight connection at the joint, the The lower end of the filter box is connected to the water supply tank, and the dust after the water mist settles is filtered by the filter box and flows into the water supply tank. The water pump is installed in the water supply tank, and the sprayed water is provided by the water pump.

Further, the high-pressure water pipe connecting the water pump and the water mist nozzle is also provided with a booster pump to provide sufficient spray pressure for the water mist nozzle through boosting.

Further, 3 extractable filter sieve plates are arranged at intervals on the ventilation duct, which is convenient for decontamination and replacement of the sieve plates. The filter sieve plates are also provided with fiber mesh cloth to improve the filter efficiency of the sieve plates to the dusty air in the ventilation duct. .

Furthermore, the dust collection box can be drawn out relatively, and when the dust collection reaches a certain amount, the dust residue in the integration box can be cleaned by opening the integration box.

Further, the water mist nozzles are arranged on the inner wall of the ventilation pipe in the interval between the two filter sieve plates, and form a row of water mist nozzles, and two rows of water mist nozzles are symmetrically arranged in the interval between the two filter sieve plates.

The working process of this spray type air dust removal device is: the air in the work site is drawn into the ventilation pipe by the exhaust fan, the water pump draws water from the water supply tank to supply the water mist nozzle for spraying, and the water mist sprayed by the water mist nozzle is dispersed in the ventilation pipe. Settling and intercepting the dusty air in the ventilation duct, due to the hygroscopicity of the dust, more and more dust is mixed with water, and under the action of gravity, it falls into the dust collection pipe, dust collection box and filter In the box, the unsinkable powder continues to move along the ventilation duct, meets the set filter sieve plate, and is filtered by the sieve plate, the dust in the air is filtered out or the content is reduced, and the filtered dust falls into the dust collection box. Multiple filter sieve plates are set to filter the dusty air multiple times to reduce the dust content to meet the environmental discharge requirements. The dust residue containing moisture is filtered through the filter box, and the water and dust residue are separated and flow into the water tank for secondary use. .

The beneficial effects of the utility model are: the spray-type air dust removal device of the utility model is simple in design, easy to use, and will not cause secondary pollution. wide.

Description of drawings

Fig. 1 is a schematic diagram of the first embodiment of the utility model.

Fig. 2 is a schematic diagram of the second embodiment of the utility model.

In the figure, 1. Dust drop component, 2. Water tank, 3. Ventilation pipe, 4. Water pump, 5. Booster pump, 6. High pressure water pipe, 7. Filter sieve plate, 8. Water mist nozzle, 9. Exhaust fan, 11. Dust collection pipe, 12. Dust collection box, 1 3. Filter box.

Detailed ways

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

Fig. 1 exemplifies the embodiment of the present utility model, a kind of spray type air dedusting device, comprises the ventilation duct 3, the dust drop assembly 1 and the water supply tank 3 that are arranged in order from top to bottom, the air inlet of ventilation duct 3 and exhaust The outlet is provided with an exhaust fan 9 for extracting dust-laden air, and a number of water mist nozzles 8 are distributed along the inner wall of the ventilation duct 3. The water mist nozzles 8 are connected to the water pump 4 through a high-pressure water pipe 6, and the inner wall of the ventilation duct 3 is also arranged at intervals. The filter sieve plate 7, the lower end of the filter sieve plate 7 is connected to the dust drop assembly 1, and the dust drop assembly 1 includes a dust collection pipeline 11, a dust collection box 12 and a filter box 13 arranged in sequence, and the dust collection pipeline 11 is connected to the ventilation pipeline 3 The lower end of the filter box 13 is connected to the water supply tank 3, and the dust filtered by the filter box 13 flows into the water supply tank 2 after the water mist settles. .

Further, the installation form of exhaust fan 9 has two kinds, as shown in Figure 1, a kind of is that exhaust fan 9 is horizontally installed at the air duct 3 air inlet place and is communicated with air inlet, and the air inlet of exhaust fan is toward horizontal direction ; As shown in Figure 2, the other is that the exhaust fan is installed at the air inlet of the ventilation duct 3 through the connecting pipe and is communicated with the air inlet, and the intake end of the exhaust fan 9 is downward.

As preferably, a booster pump 5 is also provided on the high-pressure water pipe 6 connecting the water pump 4 and the water mist nozzle 8 to provide sufficient spray pressure of the water mist nozzle 8 through boosting; Filtration sieve plate 7, movable extracting can make sieve plate 7 decontamination and change sieve plate 7 convenience, and filter sieve plate 7 is also provided with fiber mesh cloth, improves the filtering efficiency of sieve plate 7 to dusty air in ventilation duct 3.

As a preference, the dust collection box 12 is also set to be removable, and when the dust reaches a certain amount, the integrated box 12 is drawn out to clean up the dust in the integrated box 12 .

As preferably, the water mist nozzle 8 is arranged on the ventilation duct inner wall of the filter sieve plate 7 intervals, and a plurality of water mist nozzles 8 form a row of water mist nozzles, and two rows of water mist nozzles are symmetrically arranged in each interval, and the ventilation duct 3 is provided with 3 groups of water mist nozzle rows that are arranged symmetrically.

When the spray-type air dust removal device is working, the air in the work site is drawn into the ventilation duct by the exhaust fan, and the water pump draws water from the water supply tank for spraying by the water mist nozzle. The water mist sprayed by the water mist nozzle is dispersed in the ventilation duct, and the ventilation duct Due to the hygroscopicity of dust, more and more dust is mixed with water, and under the action of gravity, it falls into the dust collection pipe, dust collection box and filter box. The unsinkable powder continues to advance along the ventilation duct, meets the set filter sieve plate, and is filtered by the sieve plate, the dust in the air is filtered out or the content is reduced, and the filtered dust falls into the dust collection box. The filter sieve plate is used to filter the dusty air multiple times to reduce the dust content to meet the environmental discharge requirements. The dust residue containing moisture is filtered through the filter box, and the water and dust residue are separated and flow into the water tank for secondary use.

The above description does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still belong to the scope of the technical solution of the present invention.

Claims (5)

1. a spray air dust arrester, it is characterized in that: comprise the ventilation shaft set gradually from top to bottom, dirt is come down to a lower group part and water tank, the air inlet of described ventilation shaft and exhaust outlet are provided with the air exhauster for extracting dust laden air, some hydraulic spray nozzles are distributed with along ventilation shaft inwall, described hydraulic spray nozzle is connected with the water pump be arranged in described supply tank by high-pressure water pipe, described ventilation shaft inwall also interval arranges the filtration sieve plate of some movable extractions, the lower end of described filtration sieve plate connects described dirt and to come down to a lower group part, described dirt part of coming down to a lower group comprises the dust collecting duct set gradually, disposal box and Rose Box, described dust collecting duct and ventilation shaft keep in junction being tightly connected, the lower end of described Rose Box connects described water tank, dust after water smoke sedimentation flows in supply tank through the moisture that filter box filters out, for secondary.

2. a kind of spray air dust arrester according to claim 1, is characterized in that: the high-pressure water pipe connecting described water pump and hydraulic spray nozzle is also provided with booster pump, by supercharging, is supplied to the atomisation pressure that hydraulic spray nozzle is enough.

3. a kind of spray air dust arrester according to claim 1, it is characterized in that: the filtration sieve plate described ventilation shaft being arranged at intervals with 3 pieces of movable extractions, the sieve plate of movable extraction can facilitate the replacing of scrubbing on sieve plate and sieve plate, described filtration sieve plate is also provided with fiber mesh cloth, improves sieve plate to the filter effect of dust laden air in ventilation shaft by fiber mesh cloth.

4. a kind of spray air dust arrester according to claim 1, is characterized in that: the movable extraction of described disposal box, when the dirt slag of control of dust arrives a certain amount of, extracts integral box out, can clear up the dirt slag in integral box.

5. a kind of spray air dust arrester according to claim 1, it is characterized in that: described hydraulic spray nozzle is arranged on the ventilation shaft inwall of filtration sieve plate interval section, and form hydraulic spray nozzle row, filter in the interval of sieve plate two, be symmetrically arranged with two sprays nozzle row.