CN216778324U

CN216778324U - Charged spray dust removal device

Info

Publication number: CN216778324U
Application number: CN202220092080.8U
Authority: CN
Inventors: 李小川; 卓宇轩; 常喜; 左丽; 张明瑞; 张峰
Original assignee: Xuzhou Zhongkai Mechanical & Electrical Equipment Manufacturing Co ltd; China University of Mining and Technology CUMT
Current assignee: Xuzhou Zhongkai Mechanical & Electrical Equipment Manufacturing Co ltd; China University of Mining and Technology CUMT
Priority date: 2022-01-13
Filing date: 2022-01-13
Publication date: 2022-06-21
Anticipated expiration: 2032-01-13

Abstract

The utility model discloses a charged spray dust removal device, which comprises a charged spray system, a transition body, an observation window, a filter screen and a water outlet, solves the problem of low removal efficiency of industrial fine dust, replaces a traditional electrostatic dust removal polar plate with small liquid drops, improves the uniformity of an electric field, overcomes the difficulty that the polar plate is difficult to clean, improves the dust capture distance of the liquid drops relative to a traditional wet dust remover, improves the spray dust removal efficiency, and simultaneously has less power consumption because the whole charged ring is in an open circuit state.

Description

Charged spray dust removal device

Technical Field

The utility model relates to the technical field of industrial pollution treatment, in particular to a technology for removing dust by utilizing charged spray.

Background

The traditional dust removal technology comprises various dust removal modes such as mechanical dust removal, wet dust removal, filter dust removal, electric dust removal and the like, and particularly, the mechanical dust removal mainly depends on mechanical force (gravity, inertia force and the like) to remove dust in air; the wet dust removal mainly uses the inertia collision or other actions of water drops and particles to trap the particles; the filter type dust removal mainly enables dust-containing gas to pass through a certain filter material to achieve the effect of separating particles from the gas; the electric dust removal mainly utilizes a high-voltage electric field to ionize smoke, and dust charges in air flow are separated from the air flow under the action of the electric field.

Because PM2.5 fine particles are very easy to cause occupational diseases such as pneumoconiosis and the like, a large amount of dust is inevitably generated in a factory, although the existing dust removal technology is relatively mature, the collection efficiency of large particles can reach more than 90 percent and even 99.9 percent, but the dust removal efficiency of micron-sized fine particles is very low, and therefore the removal of PM2.5 dust particles is urgently needed to be solved.

SUMMERY OF THE UTILITY MODEL

Aiming at the problem of workshop air quality caused by low purification efficiency of industrial generated fine dust, the utility model provides a method for capturing fine dust in air by utilizing charged droplets, which can realize efficient collection of the workshop fine dust and improve the workshop air quality. Thereby ensuring the life health of workers.

The technical scheme of the charged spray dust removal device is that the charged spray dust removal device comprises a box body, a transition body, a water outlet and a charged spray system are arranged in the box body, the transition body is arranged at the air inlet of the box body, the sectional area of the transition body is increased from small to large from the air inlet direction and is finally equal to that of the box body, so that the transition body is better connected with the box body, as the sectional area is increased from small to large, the sectional area of dust-containing gas is enlarged and the flow rate of the gas is reduced after the dust-containing gas passes through the transition body, the meeting probability of the gas and small liquid drops is increased, the dust removal efficiency of the device is improved, the charged spray system consists of a spray head, a water pump, a water pipe and a charged ring, one pole of a power supply is connected with the charged ring, the other pole of the charged ring is connected with the ground, as a metal device is connected with the ground, a potential difference is formed between the charged ring and the device, and the water pump is connected with the spray head through the water pipe, the spray head is arranged above the charge ring, so that small liquid drops sprayed by the spray head can be ensured to have certain charges, and the water outlet is arranged at the bottom of the box body.

Furthermore, the negative electrode of the power supply is connected with the charge ring to provide negative high voltage; the positive electrode is connected with the ground. A space electric field is formed between the electrode and the nozzle, so that the liquid drops sprayed out of the nozzle are charged, and the charging mode does not generate direct charge transfer, so that the power consumption is almost zero.

Furthermore, the bottom of the box body is an inclined plane, a water outlet is formed in the lowest position of the inclined plane, charged small liquid drops for capturing dust can be collected on the inclined plate at the bottom of the box body under the action of gravity, and finally the charged small liquid drops are reserved at the water outlet through the inclined plane and flow out of the equipment through the water outlet.

Furthermore, the charged spray dust removal device also comprises an exhaust fan, and dust-containing gas enters from the gas inlet through the suction effect of the exhaust fan, so that the gas inflow is improved, and the dust removal efficiency is improved.

Furthermore, the two transition bodies are respectively arranged at the air inlet and the air outlet of the box body and at the air outlet, and can quickly contract the air flow, so that liquid drops carried in the air are collided with each other at the contraction section and the wall surface to be recovered, and the amount of the liquid drops carried in the air discharged by the dust remover is reduced; meanwhile, the transition section arranged at the outlet can further increase the contact between the fine dust and the wall surface liquid film, and the dust removal efficiency is improved.

Furthermore, the observation window is arranged on the box body, so that the capturing condition of the charged spraying system on dust in the gas can be observed at any time, when the equipment has problems, the equipment can be found out in time through the observation window and stopped, and the personal safety of workers is ensured.

Furthermore, a filter screen is arranged near the air outlet, so that the device can prevent charged small droplets from flowing outside along with air, reduce the water content in the air, and can perform secondary capture on dust escaping from the charged spraying system to perform secondary purification on dust-containing gas.

Furthermore, the water mist sprayed by the spray head is conical with the top angle of 80 degrees, and the diameter of the sprayed small liquid is between 50 and 136 micrometers.

Furthermore, the three nozzles of the charged spraying system are fixed on the upper part of the box body side by side and are vertical to the flowing direction of the airflow, and meanwhile, three charged ring conductors are connected in series, so that the three charged rings have high voltage, the whole pressurizing process is open circuit, one wire is connected to the charged rings, the other wire is grounded, the nozzles are placed side by side, water mist sprayed by the three nozzles is distributed on the sectional area of the box body, so that dust in gas does not have a space for escaping, partial water mist can be overlapped at the middle position of the box body, the concentration of the middle water mist is higher, and in the process of enlarging a radial interface of the dust, the concentration of dust particles in the center is greater than that of particles around, and the probability of meeting the dust and small droplets is improved.

Furthermore, the three nozzles are respectively positioned at the center of the charge ring, the distance between the water spray holes of the nozzles and the bottom of the charge ring is 10-20 mm, and the nozzles are positioned at the center of the charge ring to ensure that small droplets sprayed by the nozzles all have certain charges as far as possible.

Compared with the prior art, the utility model solves the problem of low efficiency of removing fine dust in industry, the small liquid drops are used for replacing the traditional electrostatic dust removal polar plate, the uniformity of an electric field is improved, and the problem that the polar plate is difficult to clean is also overcome.

Drawings

FIG. 1 is a general structure diagram of an electrically charged spray dust-removing device;

FIG. 2 is a front and side view of the transition body;

FIG. 3 is a diagram of the relative position of the charge ring and showerhead;

fig. 4 is a sectional view of the case.

Reference numerals:

1-a box body; 2-a transition body; 3-a charged spray system; 4-observation window; 5-water outlet; 6-a spray head; 7-a water pump; 8-a water pipe; 9-charge ring; 10-filtering the screen; 11-an exhaust fan.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As shown in fig. 1, an embodiment of a charged spray dust collector includes a box 1, a transition body 2, a water outlet 5 and a charged spray system 3 are arranged in the box 1, the charged spray system 3 is composed of four parts, namely a spray head 6, a water pump 7, a water pipe 8 and a charged ring 9, one pole of a power supply is connected with the charged ring 9, the other pole is connected with the ground, the water pump 7 is connected with the spray head 6 through the water pipe 8, as shown in fig. 3, the spray head 6 is located above the center of the charged ring 9, so that droplets sprayed by the spray head can be ensured to have certain electric charges as much as possible, and the water outlet 5 is located at the bottom of the box 1.

As shown in figure 2 of the transition body 2, the transition body 2 is installed at the box body air inlet, the sectional area of the transition body 1 is from small to large from the air inlet direction, and finally is equal to the sectional area of the box body 1, thereby better connecting with the box body 1.

In another embodiment as shown in fig. 4, there is provided an electrically charged spray dust removing device, wherein there are three spray heads 6 and three electrically charged rings 9 of an electrically charged spray system 3, the distance between the water spray hole of each spray head 6 and the bottom of the electrically charged ring 9 below the spray head is 15mm, the three spray heads 6 are fixed side by side on the upper portion of a box 1 and perpendicular to the flow direction of an air flow, and the three electrically charged rings 9 are connected in series through a conductor, so that the three electrically charged rings 9 all have a high voltage, the whole pressurizing process is an open circuit, one electric wire is connected to the electrically charged ring 9, the other electric wire is grounded, the spray heads 6 are arranged side by side, so that the water mist sprayed from the three spray heads 6 can be distributed on the cross section of the box 1, so that there is no space for dust in the air to escape, and a part of the water mist can be overlapped in the middle of the box 1, so that the middle water mist concentration is high, and the dust is in the process of expanding the radial interface, the concentration of dust particles in the center is greater than that of particles around, so that the probability of meeting dust and small liquid drops is improved.

The filter screen 10 is arranged near the air outlet, so that the device can prevent charged small droplets from flowing outside along with air, reduce the water content in the air, and can perform secondary capture on dust escaping from the charged spraying system to perform secondary purification on dust-containing gas.

The dust removal air inlet is connected with a pipeline, the pipeline extends to a dust generation source of a plant area, a charged spraying system is firstly opened to enable a spray head 6 to spray water mist and electrify a charged ring 9, after the charged ring starts to work stably, a centrifugal exhaust fan is started, dust-containing gas enters from an air inlet through the suction effect of the centrifugal exhaust fan, the sectional area of the gas is gradually enlarged through a transition body, the flow rate of the gas is gradually reduced, droplets sprayed by the spray head 6 are downwards floated due to the gravity action after the droplets are subjected to high pressure by the charged ring 9, finally, the whole interface is fully filled with the droplets, dust in the gas can be collected through the mutual collision of the droplets and the dust and the adsorption and attraction effect of the charged droplets on the dust when the dust in the gas passes through the space, purified gas passes through a filter screen 10 before being discharged, moisture in the air can be reduced, and particles in the air can be secondarily purified, the small droplets which capture the dust fall onto the inclined plate at the bottom of the box body under the action of gravity, are collected at the lowest part of the inclined plate and are finally discharged through the water outlet.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any minor modifications, equivalent replacements and improvements made to the above embodiment according to the technical spirit of the present invention should be included in the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a lotus electric spray dust collector, including box (1), its characterized in that, be equipped with transition body (2), delivery port (5) and lotus electric spraying system (3) in box (1), transition body (2) are installed at box inlet port department, the sectional area of transition body (2) is from little grow, finally equal with box (1) sectional area, lotus electric spraying system (3) comprise shower nozzle (6), water pump (7), water pipe (8) and charge ring (9), water pump (7) are connected with shower nozzle (6) through water pipe (8), shower nozzle (6) are located charge ring (9) top, a power supply utmost point is connected with charge ring (9), another utmost point is connected with ground, delivery port (5) are located the bottom of box (1).

2. The charged spray dust collector of claim 1, wherein the negative pole of the power supply is connected with the charge ring (9) to provide negative high voltage, and the positive pole is connected with the ground.

3. The charged spray dust collector according to claim 1, wherein the bottom of the box body (1) is an inclined surface, and the water outlet (5) is positioned at the lowest part of the inclined surface.

4. The charged spray dust collector according to claim 3, characterized by comprising an exhaust fan (11).

5. The charged spray dust collector according to claim 1, wherein the number of the transition bodies (2) is two, and the two transition bodies are respectively arranged at the air inlet and the air outlet of the box body (1).

6. The charged spray dust collector according to claim 1, wherein the box body (1) is provided with an observation window (4).

7. The charged spray dust collector according to any one of claims 1-6, characterized by comprising a filter screen (10), wherein the filter screen (10) is arranged near the air outlet.

8. The charged spray dust collector according to claim 7, wherein the water mist sprayed by the spray head (6) is conical with an apex angle of 80 degrees, and the diameter of the sprayed small liquid is between 50 and 136 micrometers.

9. The charged spray dust collector according to claim 8, wherein the number of the spray heads (6) of the charged spray system (3) is three, the number of the charge rings (9) is three, the three spray heads (6) are fixed on the upper part of the box body (1) side by side, and the three charge rings (9) are connected in series through conductors and are connected with a power supply.

10. The charged spray dust collector according to claim 9, wherein three nozzles (6) are fixed on the upper part of the box body (1) side by side and are vertical to the flowing direction of the airflow.

11. The charged spray dust collector according to claim 10, wherein the three nozzles (6) are respectively positioned above the center of the charge ring (9), and the distance between the water spray holes of the nozzles (6) and the bottom of the charge ring (9) is 10mm-20 mm.