CN101259355B - Wet dust removal fan - Google Patents

Abstract

The invention discloses a wet-type dedusting blower, which comprises an air cylinder. The air cylinder is composed of an outer cylinder wall and an inner cylinder wall provided with a plurality of through holes. There is an interlayer cavity between the outer cylinder wall and the inner cylinder wall; There is a water outlet at the bottom of the wall, the water storage box is connected with the lower part of the outer cylinder wall, and corresponds to the water outlet, and the bottom of the water storage box is provided with a drain outlet; the inner cylinder wall is equipped with a bracket with a wheel shaft, and the bracket is connected to the wind turbine. The cylinder is connected, the bracket is arranged between the water nozzle and the fan impeller, and at least one separating impeller is installed on the wheel shaft. In practical application, the present invention has the advantages of high dust removal efficiency, low operating cost, remarkable energy-saving effect, and no need for frequent maintenance. It affects the increase of the load of the fan motor, and the problem that the fan motor is easily burned due to blockage, which ensures the operation safety and work efficiency of the fan motor.

Description

Wet dust removal fan

technical field

The invention relates to the technical field of dedusting equipment, in particular to a wet dedusting blower used for removing dust in the ambient air of a working surface in a mine.

Background technique

At present, in places with serious dust pollution such as underground mines and tunnel construction, most of them use filter-type dust removal devices to filter the dust in their working environment, so as to purify the ambient air on the working surface and effectively protect the health of workers. the goal of. This filter-type dust removal device adopts the repeated circulation method of the dust-laden air in the working surface environment through the filter, that is: the dust-laden air is condensed under the action of water mist to form a dust-water mixture, which is filtered by the filter and then dehydrated. discharge. The existing problems are: 1. Because the filter is composed of multi-layer filter screens, its mesh is extremely small. Although it can meet the dust removal effect, it increases the resistance of the dust removal system, greatly reduces the air volume handling capacity and dust removal efficiency, and makes the The load on the fan motor increases, resulting in greater energy consumption and higher operating costs; second, as the dust removal time changes, more and more dust is adsorbed on the filter, making its air volume handling capacity lower and lower. Not only will it seriously affect the dust removal effect, but it will also cause the load on the fan motor to increase and the energy consumption will increase. If the filter is clogged, it will easily cause the fan motor to be burned; If it operates in a high-temperature environment, its filter will accumulate a large amount of dust in a short period of time, so it needs to be cleaned or replaced frequently, which makes the maintenance work quite heavy. Chinese patent 200620110815.6 discloses a wet cyclone dust collector, and the filter dust removal section adopted by it also has the disadvantages of the filter dust removal device mentioned above.

How to achieve the purpose of effectively removing dust in dusty air without using a filter, thereby not only reducing the resistance of the dust removal system, ensuring the air volume processing capacity, but also fundamentally ensuring that the fan motor always maintains a constant load, effectively saving energy , and does not require frequent maintenance, it is a major problem to be solved at present.

Contents of the invention

The purpose of the present invention is to provide a wet dust removal fan, which can achieve the purpose of effectively removing the dust in the dusty air without taking the form of filtration, and it can solve the problems of the dust removal system in the prior art, such as relatively large resistance, air volume handling capacity and dust removal efficiency. Low energy consumption, high energy consumption, easy to burn the fan motor and heavy maintenance work.

The purpose of the present invention is achieved through the following technical proposals: a wet-type dedusting blower, which includes a blower, a water spray nozzle is installed in the front of the blower, and a motor with a fan impeller is installed in the middle; The protective shell of the mouth is set in the air cylinder and connected with the air cylinder. The heat dissipation port of the protective shell communicates with the port correspondingly. The motor is installed in the protective shell. There is an interlayer cavity between the outer cylinder wall and the inner cylinder wall; the bottom of the outer cylinder wall is provided with a water outlet, and the water storage box is connected with the lower part of the outer cylinder wall and corresponds to the water outlet. A drain port is opened at the bottom; a bracket of a wheel shaft is installed in the inner cylinder wall, the bracket is connected with the air cylinder, the bracket is arranged between the water nozzle and the fan impeller, and at least one separated impeller is installed on the wheel shaft.

In order to further realize the purpose of the present invention, it can also be achieved through the following technical solutions: at least one water collection ring is connected to the inner wall of the inner cylinder wall. The water collecting ring includes a primary water collecting ring and a secondary water collecting ring. The protective shell is placed in the inner cylinder wall of the air duct, and there is a gap between the protective shell and the inner cylinder wall; the first deflector composed of several first-level guide vanes arranged in a circle is arranged between the protective shell and the inner cylinder. In the interval between the walls, the outer end of each first-stage guide vane is respectively connected with the inner cylinder wall, and the inner end is respectively connected with the protective shell. The primary water collection ring is arranged at the rear side of the first deflector, and there is a space between them. The inner cylinder wall is provided with a second deflector composed of several secondary guide vanes arranged in a circle. The windshield is connected. The second deflector is arranged at the rear of the protective shell, and the rear side of the second deflector is provided with a secondary water collection ring, and there are intervals between them. A motor is installed on the support, and the motor is connected with at least one separated impeller. The cross-section of the water collection ring is in the shape of a rectangular plate. The section of the water collection ring is in the shape of an arc plate.

The beneficial effect that the present invention can produce: because the separating impeller installed in the blower tube rotates by cleverly using the suction negative pressure generated by the rotation of the fan impeller, it can promote the mixing of dust and water mist in the dust-laden air and form a Dust droplets, and can make the dust droplets produce high-speed rotation, so as to strengthen the conflict between the water mist particles and the dust in the dusty air, improve the capture rate of fine dust, and the centrifugal force generated by the separation impeller can dissipate the dust The dust droplets are thrown onto the inner cylinder wall, and the dust droplets enter the interlayer cavity through the through hole and are discharged after falling into the water storage box, so it can not only perform primary purification of the dusty air, but also save electric energy;

The swirling centrifugal force generated by the first deflector can once again promote the full mixing of dust and water mist in the dusty air, and make it generate high-speed rotational motion, thereby strengthening the interaction between water mist and dust particles in the dusty air again. conflict, greatly improving the capture rate of fine dust, and the swirling centrifugal force generated by the first deflector can throw the dust-laden droplets onto the inner cylinder wall, and the dust-laden droplets enter the interlayer cavity through the through hole and fall After entering the water storage box, it is discharged, so it can separate the fine dust in the primary purified air again, so that the air can be purified again;

Under the action of the swirl centrifugal force generated by the second deflector, the remaining small amount of dust is further mixed with the water mist, and it is further generated a high-speed rotational motion, thereby further strengthening the conflict between the water mist mist particles and the dust in the dust-laden gas , further improving the capture rate of fine dust, and the swirling centrifugal force generated by the second deflector can throw the dust-laden droplets onto the inner cylinder wall, and the dust-laden droplets enter the interlayer cavity through the through hole and fall into the After the water storage box is discharged, it can further separate the fine dust in the purified air, so that the air can be further purified;

Because the air cylinder is composed of an outer cylinder wall and an inner cylinder wall with several through holes, there is an interlayer cavity between the outer cylinder wall and the inner cylinder wall, and the water accumulation box connected to each other is connected at the bottom of the outer cylinder wall, and the water accumulation There is a drainage port on the box, so it can discharge the dusty sewage entering the interlayer cavity;

Because at least one water collection ring is arranged in sections on the inner wall of the inner cylinder wall, it can collect the dusty water on the inner surface of the inner cylinder wall through the water collection ring, and then flow into the water storage box regularly and be discharged, which plays a role The effect of reducing the moisture content in the air is to avoid the problem of excessive humidity in the air discharged from the air outlet.

This invention changes the traditional idea that only the form of filter can remove the dust in the dusty air, and the unique use of the separation impeller form can make the dusty air and water mist form dusty droplets and be discharged, which fundamentally replaces The filter screen filter has the advantages of high dust removal efficiency, low operating cost, remarkable energy saving effect and no need for frequent maintenance in practical applications. The amount of dust absorbed directly affects the increase in the load of the fan motor, and the problem that the fan motor is easily burned due to clogging, which fundamentally ensures the operation safety and work efficiency of the fan motor. The present invention is a revolution of dust removal technology, widely used in underground mines and can produce obvious social and economic benefits.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Detailed ways

The wet dedusting fan of the present invention comprises a blower, the front part in the blower is equipped with a water spray nozzle 5a, and the middle part is installed with a motor 15 with a fan impeller 14; the blower is provided with a port 1b and a protective shell with a heat dissipation port 16 is arranged in the air cylinder and is connected with the air cylinder. The cooling port of the protective shell 16 communicates with the port 1b correspondingly. The motor 15 is installed in the protective shell 16. The air cylinder is provided with several through holes by the outer cylinder wall 1 and The inner cylinder wall 3 of 3a is composed of an interlayer cavity 2 between the outer cylinder wall 1 and the inner cylinder wall 3; the bottom of the outer cylinder wall 1 is provided with a water outlet 1a, and the water storage box 6 is connected with the lower part of the outer cylinder wall 1, Corresponding to the water outlet 1a, the bottom of the water storage box 6 is provided with a drain outlet 6a; a bracket 12 with a wheel shaft 13 is installed in the inner cylinder wall 3, the bracket 12 is connected with the air cylinder, and the bracket 12 is arranged on the water nozzle 5a Between the fan impeller 14 at least one separating impeller 11 is mounted on the axle 13 . At least one water collection ring is connected to the inner wall of the inner cylinder wall 3 . The water collecting ring includes a primary water collecting ring 22 and a secondary water collecting ring 22a. The protective shell 16 is arranged in the inner tube wall 3 of the blower, and there is a space between the protective shell 16 and the inner tube wall 3; In the interval between the protective case 16 and the inner cylinder wall 3 , the outer ends of each first-stage guide vane 21 are respectively connected with the inner cylinder wall 3 , and the inner ends are respectively connected with the protective case 16 . The primary water collection ring 22 is arranged at the rear side of the first deflector, and there is a space between them. The inner cylinder wall 3 is provided with a second deflector composed of several secondary guide vanes 21a arranged in a circle, the outer end of each secondary guide vane 21a is connected with the inner cylinder wall 3, and the inner end is connected to the inner cylinder wall 3. They are connected with the circular windshield 23 respectively. The second deflector is arranged at the rear of the protective shell 16, and the rear side of the second deflector is provided with a secondary water collection ring 22a, and there is an interval between them. A motor is installed on the support 12, and the motor is connected with at least one separating impeller 11. The cross-section of the water collection ring is in the shape of a rectangular plate. The section of the water collection ring is in the shape of an arc plate.

Example 1

The front position in the air duct of the present invention is installed with water spray nozzle 5a, and the middle position is installed with the motor 15 of fan impeller 14; Open port 1b is offered on the air duct, and the protective shell 16 that is provided with heat dissipation port is arranged in the air duct, And it is connected with the blower, the port 1b communicates with the cooling port of the protective case 16 correspondingly, and the motor 15 is installed in the protective case 16 . The air cylinder is composed of an outer cylinder wall 1 and an inner cylinder wall 3 with several through holes 3a. There is a sandwich cavity 2 between the outer cylinder wall 1 and the inner cylinder wall 3; the bottom of the outer cylinder wall 1 is provided with a water outlet. 1a, the water storage box 6 is connected to the lower part of the outer cylinder wall 1, and corresponds to the water outlet 1a, and the bottom of the water storage box 6 is provided with a drainage port 6a; the inner cylinder wall 3 is equipped with a bracket 12 with a wheel shaft 13, the bracket 12 is connected with the fan cylinder, the bracket 12 is arranged between the water spray nozzle 5a and the fan impeller 14, and the two separation impellers 11 are installed on the wheel shaft 13 respectively. The water spray nozzle 5a is connected with the water source pipeline 5 . A plurality of water spray nozzles 5a can be provided according to actual needs.

During work, when the dust-laden air enters the air cylinder from the air inlet 4 at the front end of the air cylinder, and the fan impeller 14 rotates through the motor 15 to generate an air flow, the separation impeller 11 rotates under the action of the air flow, so that the dust that is sucked into the air cylinder The dust-laden air and the water mist sprayed by the water spray nozzle 5a form dust-laden droplets, and the dust-laden droplets are thrown onto the inner cylinder wall 3 with several through holes 3a under the centrifugal force generated by the separation impeller 11 At this time, the dusty liquid droplets enter the interlayer cavity 2 through the through hole 3a and fall into the water storage box 6, and then are discharged through the drain port 6a. After the primary purification, the dusty air is discharged from the air outlet 4a at the rear end of the air cylinder. The dust removal efficiency after primary purification can reach more than 70-80%.

Example 2

On the basis of Embodiment 1, a plurality of water collection rings are respectively arranged at the rear positions of the two separated impellers 11 in the air cylinder, and there are intervals between them, and the plurality of water collection rings are respectively connected to the inner wall of the inner cylinder wall 3. It can make the dusty water flow on the inner wall of the inner cylinder wall 3 pass through the collection of the water collection ring, and then flow into the water storage box 6 regularly and be discharged. The water collecting ring can reduce the moisture content in the air, so as to avoid excessive humidity of the air discharged from the air outlet 4a.

Example 3

On the basis of Embodiment 1, in the interval between the protective shell 16 and the inner cylinder wall 3, a first deflector composed of several first-stage deflector vanes 21 arranged in a circle is arranged, each of which is The outer ends of the first-stage guide vanes 21 are respectively connected to the inner cylinder wall 3, and the inner ends are respectively connected to the protective shell 16; There are intervals between them. The swirling centrifugal force generated by the first deflector can throw the dust-laden liquid droplets onto the inner cylinder wall 3 provided with several through holes 3a again, and the dust-laden liquid droplets enter the interlayer cavity 2 through the through holes 3a and fall. After entering the water storage box 6, it is discharged through the drain port 6a; in addition, the dusty water flow on the inner wall surface of the inner cylinder wall 3 is collected by two first-stage water collection rings 22 arranged in sections and then discharged through the drain port 6a. The first deflector can re-mix the remaining small amount of fine dust and water mist in the primary purified air, and generate high-speed rotating motion again, which once again strengthens the conflict between the water mist and the small amount of fine dust in the dusty gas, thus greatly The capture rate of a small amount of fine dust is improved, and finally a small amount of fine dust in the primary purified air is separated again, so that the air is purified again and then discharged from the air outlet 4a. The primary water collecting ring 22 can reduce the moisture content in the air, so as to avoid excessive humidity of the air discharged from the air outlet 4a. After this treatment, the dust removal efficiency can reach more than 90-95%.

Example 4

On the basis of Embodiment 1 and Embodiment 3, at the rear side of the first deflector and the primary water collecting ring 22, a second deflector consisting of several secondary deflector vanes 21a arranged in a circle is arranged. The outer end of each secondary guide vane 21a is connected to the inner cylinder wall 3, and the inner end is respectively connected to the circular windshield 23; Stage water collecting rings 22a are spaced apart from each other. The swirling centrifugal force generated by the second deflector can further throw the dusty liquid droplets onto the inner cylinder wall 3 provided with several through holes 3a, and the dusty liquid droplets enter the interlayer cavity 2 through the through holes 3a and fall After entering the water storage box 6, it is discharged through the drain port 6a; in addition, the dusty water flow on the inner wall surface of the inner cylinder wall 3 is collected by two segmentally arranged secondary water collection rings 22a and then discharged through the drain port 6a. The second deflector can further mix the remaining tiny amount of fine dust and water mist in the re-purified air, and further generate high-speed rotating motion, thereby further strengthening the water mist mist particles and the tiny amount of fine dust in the dusty gas. conflict, thereby further improving the capture rate of a very small amount of fine dust, and finally further separating the very small amount of fine dust in the air, so that the air is further purified and then discharged from the air outlet 4a. The secondary water collecting ring 22a can further reduce the moisture content in the air, so as to avoid excessive humidity of the air discharged from the air outlet 4a. After this treatment, the dust removal efficiency can reach more than 99%.

Example 5

On the basis of Embodiment 1, a motor is installed on the bracket 12, and the motor is connected with the two separation impellers 11 through a transmission device, so that the two separation impellers 11 are directly driven by the motor to rotate, so that the powder can be separated according to the dust characteristics. According to the different dust removal conditions, the motor speed is adjusted through the control device to make it better for the separation of dusty air.

In summary, the separating impeller 11, the first deflector, the primary water collection ring 22, the second deflector, and the secondary water collection ring 22a are respectively arranged in the air duct, according to the working environment, dust characteristics, dust removal effect and Depending on the humidity of the exhausted air, the set quantity can be appropriately increased or decreased; the installation position can also be adjusted appropriately to achieve the ideal dust removal and dehumidification effect of the present invention.

The cross section of the water collection ring can also be a straight plate shape, and a circular or semicircular shape. Transmission device and control device are known technologies.

The technical solutions described in the present invention are not limited to the implementations described in this example, and other implementations are also possible to complete the technical solutions of the present invention.

The technical parts not described in detail in the present invention are all known technologies.

Claims (10)

1. Wet type dedusting blower, it comprises blower, and the front part in blower installs water spray nozzle (5a), and the motor (15) that is provided with fan impeller (14) is installed in the middle; The protective shell (16) provided with the heat dissipation port is arranged in the air duct and is connected with the air duct. The heat dissipation port of the protective case (16) communicates with the port (1b) correspondingly, and the motor (15) is installed in the protective case (16 ), it is characterized in that: the air cylinder is composed of an outer cylinder wall (1) and an inner cylinder wall (3) provided with several through holes (3a), between the outer cylinder wall (1) and the inner cylinder wall (3) There is an interlayer cavity (2); the bottom of the outer cylinder wall (1) is provided with a water outlet (1a), and the water storage box (6) is connected to the lower part of the outer cylinder wall (1) and corresponds to the water outlet (1a) , the bottom of the water storage box (6) is provided with a drain outlet (6a); the support (12) with the axle (13) is installed in the inner cylinder wall (3), the support (12) is connected with the blower, and the support (12 ) is arranged between the water spray nozzle (5a) and the fan impeller (14), and at least one separation impeller (11) is installed on the wheel shaft (13). 2. The wet dust removal fan according to claim 1, characterized in that: at least one water collection ring is connected to the inner wall of the inner cylinder wall (3). 3. The wet dust removal fan according to claim 2, characterized in that: the water collecting ring comprises a primary water collecting ring (22) and a secondary water collecting ring (22a). 4. The wet dust removal fan according to claim 1, characterized in that: the protective shell (16) is arranged in the inner cylinder wall (3) of the air cylinder, and the protective shell (16) and the inner cylinder wall (3) are mutually There are intervals; the first deflector composed of several first-stage guide vanes (21) arranged in a circle is arranged in the interval between the protective shell (16) and the inner cylinder wall (3), and each first-stage guide vane The outer ends of the blades (21) are respectively connected with the inner cylinder wall (3), and the inner ends are respectively connected with the protective shell (16). 5. The wet-type dedusting fan according to claim 3 or 4, characterized in that: the first-stage water collection ring (22) is arranged at the rear side of the first deflector, and there is an interval between them. 6. The wet dust removal fan according to claim 1, characterized in that: the inner wall (3) is provided with a second deflector composed of several secondary deflector vanes (21a) arranged in a circle, each The outer ends of the secondary guide vanes (21a) are respectively connected to the inner cylinder wall (3), and the inner ends are respectively connected to the circular windshield (23). 7. The wet dust removal fan according to claim 1, 3 or 6, characterized in that: the second deflector is arranged at the rear of the protective shell (16), and the rear side of the second deflector is provided with a secondary collector. Water rings (22a) are spaced from each other. 8. The wet dust removal fan according to claim 1, characterized in that: a motor is installed on the support (12), and the motor is connected to at least one separating impeller (11). 9. The wet dust removal fan according to claim 2, characterized in that: the cross section of the water collection ring is in the shape of a right-angle plate. 10. The wet dust removal fan according to claim 2, characterized in that: the cross section of the water collection ring is in the shape of a circular arc plate.

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