CN203355537U - Dust-removing equipment with air circulation function - Google Patents

Abstract

The utility model discloses a dust removal device with airflow rotation, comprising: a box body, a support frame of the box body, an isolation plate is arranged above the box body, and the isolation plate divides the box body into a clean area and a dust area, and the dust area It is composed of a middle box, a symmetrical left box and a right box, and is separated by a first vertical partition. Several filter bags are fixed on the partition of the left box and the right box. The bottom is a cone and has an outlet. , the upper part of the middle box is provided with a dust inlet, the lower part is provided with an air duct opening for dust to enter the left and right boxes, the bottom is provided with an outlet with a valve, and the clean area is provided with a clean air outlet. The isolation plate of the middle box A decelerating motor is fixed, and the rotating shaft of the decelerating motor is fixed with a rotating shaft extending into the middle box body, and the rotating shaft is fixed with a plurality of blades through a cross bar. The width of the blade and the radius of rotation are sufficient to operate beyond half of the maximum possible radius of rotation. The utility model has the beneficial effects of simple structure, low cost, low maintenance cost and high dust removal efficiency.

Description

Dust Extraction Equipment with Air Rotation

technical field

The utility model relates to a dust removal device, in particular to a dust removal device for cement building materials.

Background technique

In the prior art, dust removal equipment for dust such as cement mainly uses filter bags to filter dust, and uses the self-weight sinking of dust during the natural flow of dust to remove dust. Filtering dust with filter bags will increase the replacement cost of filter bags, while dust The self-weight sinking dust removal will not have consumable costs, but the self-weight sinking speed of the dust is slow, the efficiency is low, and it cannot meet the use requirements.

In addition, the filter bags of cement building materials adopt the downward air intake method to filter dust, and the dust-laden gas moves upward from the bottom of the filter bag. Obviously, the filtration speed of the bottom, middle and upper parts of the filter bag will be different. Excessive wind speed will affect the life and resistance of the filter bag. What's more serious is that the dust particles in the dusty gas have a certain distribution range, and the downward air intake method will cause most of the coarse particles to deposit on the lower part of the filter bag and the fine particles to deposit on the upper part of the filter bag. According to the principle of pulse cleaning, the more uniform the thickness of the dust layer adsorbed on the surface of the filter bag, the better the air permeability and cleaning effect. Obviously, the above distribution is a defect, and the longer the filter bag is, the more obvious this defect is. The wind method also produces secondary adsorption during the dust cleaning process, which shortens the life of the filter bag and increases maintenance costs.

Utility model content

According to the above deficiencies, the utility model provides a dust removal device with airflow rotation. The dust removal equipment adds an airflow rotation part, and through the airflow rotation, the dust is concentrated as much as possible in the airflow center where the airflow is relatively stable, and the dust concentration in the airflow center increases. , Accelerate the sinking, reduce the peripheral dust concentration of the rotating air flow, and carry out secondary dust removal through the tangential direction of the air flow in the way of side air intake.

The technical scheme of the utility model is:

A dust removal device with airflow rotation, including: a box body, a support frame for the box body, an isolation plate is arranged above the box body, and the isolation plate divides the box body into a clean area and a dust area. The dust area is composed of the middle box body, Symmetrical left box and right box are composed and separated by the first vertical partition board. Several filter bags are fixed on the partition board of left box and right cabinet. Valves, the upper part of the middle box is equipped with a dust inlet, the lower part is equipped with an air channel for dust to enter the left and right boxes, the bottom is equipped with an outlet with a valve, the clean area is equipped with a clean air outlet, and the isolation plate of the middle box A deceleration motor is fixed on the top, and the rotation shaft of the deceleration motor is fixed with a rotation shaft extending into the middle box, and the rotation shaft is fixed with a plurality of blades through a cross bar.

The upper edge of the blade is lower than the dust inlet, the lower edge is higher than the cones of the left box and the right box, and the width and rotation radius of the blade meet the requirement of running beyond half of the maximum rotation radius.

By adjusting the speed of the deceleration motor, the airflow in the center of the airflow is relatively stable as much as possible to facilitate dust sinking, and the rotation of the airflow around the airflow facilitates the movement of dust to the center of the airflow.

It also includes a second vertical partition board, which is fixed adjacent to the first vertical partition board, the upper part of the second vertical partition board and the lower part of the first vertical partition board form an upper air inlet passage, and the bottom part and the first vertical partition board The cones of the left box body and the right box body form the lower air inlet.

In order to further improve the dust removal effect, the bottom of the intermediate box is a cone, and the outlet with a valve is arranged below the cone.

The installation structure of the first vertical isolation plate and the second vertical isolation plate constitutes a side air intake method, which can increase the length of the filter bag to 8m or even longer, and the filter bags can be arranged more densely, which is very important for the treatment of large For equipment with dusty gas volume, it can greatly reduce the occupied area, reduce the unit steel consumption and the number of supporting parts, so as to reduce the one-time investment without increasing the operation and maintenance costs;

Since the dust-laden gas enters from the side of the filter bag, the flow direction of the dust-laden gas is perpendicular to the dust sedimentation direction. Compared with the opposite direction of the dust-laden gas flow direction and the dust sedimentation direction, the cleaning effect is obviously improved. Thus greatly reducing the secondary adsorption in the cleaning process and accelerating the dust settlement. This feature significantly reduces the number of cleaning times and prolongs the life of the filter bag.

The side air intake mode makes the filtration speed and dust particle distribution on the surface of the filter bag more uniform. The side air intake method fundamentally solves this problem, making the filtering speed of the filter bag uniform, and the local wind speed will not be too high. .

Side air intake is more suitable for online dust cleaning. Because online cleaning can make more effective use of the entire filter area and reduce one-time investment and maintenance costs. There is no inlet and outlet valve for offline dust removal in the online dust removal structure, so there are few equipment failure points and low mechanical resistance, which can reduce operating energy consumption. Because the flow direction of the dust-laden gas is vertically consistent with the sedimentation direction of the dust in the side air intake mode, the secondary adsorption in the online dust cleaning process is reduced, which is incomparable with the down air intake mode.

The utility model has the beneficial effects of simple structure, low cost, low maintenance cost and high dust removal efficiency.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the utility model.

Fig. 2 is a schematic diagram of the blade position and size structure of the utility model.

Detailed ways

Now in conjunction with accompanying drawing, the utility model is further described:

As shown in the figure, a dust removal device with airflow rotation includes: a box body, a support frame 8 for the box body, and an isolation plate 3 is arranged above the box body, and the isolation plate 3 divides the box body into a clean area 1 and dust area, the dust area is composed of the middle box body 4, symmetrical left box body and right box body and is isolated by the first vertical partition plate 41, and several filter bags 5 are fixed on the partition plate 3 of the left box body and the right box body, The bottom is a cone 71 and is provided with an outlet, the outlet is provided with a valve 72, the top of the middle box 4 is provided with a dust inlet 46, and the bottom is provided with an air duct opening 44 for dust to enter the left box and the right box, and the bottom is provided with a belt. At the outlet of the valve 61, the clean area 1 is provided with a clean air outlet, and a reduction motor 91 is fixed on the isolation plate 3 of the middle box 4, and the rotation shaft of the reduction motor 91 is fixed with a rotation shaft 92 extending into the middle box 4, and 92 is fixed with several blades 94 by cross bar 93.

It also includes a second vertical partition 42, which is fixed adjacent to the first vertical partition 41. The upper part of the second vertical partition 42 and the lower part of the first vertical partition 41 constitute the upper air inlet passage 43, the bottom and the left box body. The lower air inlet 45 is formed with the cone 71 of the right casing.

The upper edge of the blade 94 is lower than the dust inlet 10, and the lower edge is higher than the cone 71 of the left casing and the right casing, and the width of the blade 94 and the radius of rotation meet the half of the maximum possible radius of rotation; for example, the blade 94 is in the The maximum rotation radius R1 allowed in the middle box 4 is 2 meters, and half of the maximum rotation radius R2 is 1 meter, that is to say, the blade 94 runs between 1 meter and 2 meters in radius.

The design of this size is mainly to ensure that the airflow in the center of the airflow is relatively stable, and the peripheral airflow of the airflow rotates.

The bottom of the middle box 4 is a cone, and the outlet with a valve 61 is arranged below the cone.

The top of the filter bag 5 pockets is provided with a high-pressure air flow blowback dust removal unit for the filter bag 5 in the prior art, including a nozzle 23, a nozzle 22, an airflow storage tank 21, a solenoid valve for controlling the output of the airflow storage tank 21, A support frame is usually provided inside the filter bag 5 .

The basic principle of the utility model is: under the action of the fan, the dust enters the middle box 4 from the dust inlet 46, and part of the dust sinks to the cone at the bottom of the middle box 4 by the self-weight of the dust. In order to accelerate the sinking of the dust, The dedusting equipment adds airflow rotating parts, and the gear motor 91 drives the blades 94 to rotate through the rotating shaft 92, so as to concentrate the dust as much as possible to the center of the airflow where the rotating shaft 92 is where the airflow is relatively stable, and the dust concentration in the airflow center increases. Shen, the peripheral dust concentration of the rotating airflow is reduced, and the side air intake through the tangential direction of the airflow enters the left box and the right box for secondary dust removal. Specifically, part of the dust enters the upper air inlet channel 43 through the air duct opening 44 and then enters the left box and the right box. On the top of the right box, part of the dust enters the bottom of the left box and the right box through the air duct opening 44 and the lower air inlet 45, and the dust entering the left box and the right box partly sinks to the left side by its own weight. The cone 71 at the bottom of the box and the right box is partly filtered by the filter bag 5, and the clean air output from the center of the filter bag 5 enters the clean area 1 and is sent out by the clean air outlet.

The valve 61 at the bottom of the middle box 4, the valve 72 at the bottom of the left box and the right box are used for dust removal during maintenance; the high-pressure airflow back-blowing dust removal unit is used for cleaning the filter bag 5 during online maintenance.

The middle box body 4 can be a cylinder, a shape such as a square when viewed from above, and the cone can be a cone or a square cone.

Claims (4)

1. A dust removal device with airflow rotation, including: a box body, a support frame for the box body, an isolation plate is arranged above the box body, and the isolation plate divides the box body into a clean area and a dust area, and the dust area is controlled by the middle box Body, symmetrical left box and right box are separated by the first vertical partition plate, several filter bags are fixed on the partition plate of the left box and right box, the bottom is a cone and there is an outlet, the outlet There is a valve, the upper part of the middle box is equipped with a dust inlet, the lower part is equipped with an air duct opening for dust to enter the left and right boxes, the bottom is equipped with an outlet with a valve, and the clean area is equipped with a clean air outlet. Its characteristics are: A deceleration motor is fixed on the isolation plate of the middle box, and the rotation shaft of the deceleration motor is fixed with a rotation shaft extending into the middle box, and the rotation shaft is fixed with some blades through a cross bar. 2. A dust removal device with airflow rotation as claimed in claim 1, wherein the upper edge of the blade is lower than the dust inlet, the lower edge is higher than the cones of the left and right boxes, and the width of the blade is And the radius of rotation satisfies the operation beyond half of the maximum possible radius of rotation. 3. A kind of dust removal equipment with airflow rotation as claimed in claim 1, characterized in that, it also comprises a second vertical isolation plate, the second vertical isolation plate is fixed adjacent to the first vertical isolation plate, and the second vertical isolation plate is fixed. The upper part of the vertical partition board and the lower part of the first vertical partition board constitute an upper air inlet passage, and the bottom part and the cones of the left and right cabinets constitute a lower air inlet. 4. A dust removal device with airflow rotation according to claim 1, 2 or 3, characterized in that, the bottom of the intermediate box is a cone, and the outlet with a valve is arranged below the cone.

Images