CN210131487U - Filter cartridge dust remover ash removal device based on annular airflow - Google Patents

Abstract

The utility model discloses a filter cartridge dust collector based on annular airflow, which comprises a box body, a blowing member, an air outlet, a filter cartridge and an air inlet. The top of the box body is provided with an air outlet, and the box body The bottom side end is provided with an air inlet, the inside of the box body is provided with a filter cartridge, and the blowing member is penetrated on the box body. The shaft is arranged above the filter cartridge, and the nozzle unit cleans the filter cartridge based on the annular airflow. The utility model has reasonable design, simple structure and high reliability. There are two induced entrainment effects, and the contact area with the surrounding air is increased, the cleaning performance is greatly improved, the divergent effect of the cleaning airflow is enhanced, and the contact area between the cleaning airflow and the filter material of the filter cartridge is increased. , to improve the uniformity of dust removal by the filter cartridge dust collector.

Description

A filter cartridge dust collector based on annular airflow

technical field

The utility model belongs to the technical field of dust removal equipment, and relates to a dust cleaning device, in particular to a dust cleaning device for a filter cartridge dust collector based on annular airflow.

Background technique

At present, the commonly used cleaning method of filter cartridge dust collector mainly uses compressed air as the cleaning power. fall off. Although this method is simple in structure, there are problems such as off-center injection air flow, uneven distribution after entering the filter cartridge, incomplete and uneven cleaning of dust, etc., which will reduce the filtration performance of the filter cartridge, increase the operating resistance of the system, and seriously affect the filter cartridge. service life.

Utility model content

Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a dust removal device for a filter cartridge dust collector based on annular airflow. Solve the problems of off-center injection air flow, uneven distribution after entering the filter cartridge, incomplete and uneven cleaning, etc.

In order to solve the above-mentioned technical problems, the present invention is realized through the following technical solutions:

A filter cartridge dust collector based on annular airflow includes a box body, a blowing member, an air outlet, a filter cartridge and an air inlet, the top of the box body is provided with an air outlet, and the bottom side end of the box body is provided with The air inlet, the inside of the box body is provided with a filter cartridge, the blowing member is penetrated on the box body, and it is characterized in that, the spraying member includes a nozzle unit, and the nozzle unit is coaxially arranged on the filter cartridge Above, the nozzle unit cleans the filter cartridge based on the annular airflow.

Specifically, the nozzle unit is a cylinder with radial ventilation, the nozzle unit is provided with a first side wall, a second ventilation port, a cavity and a second side wall, and the shape of the first side wall is The radially ventilated cylindrical shape, the shape of the second side wall is a radially ventilated truncated cone, the first side wall and the second side wall are both coaxially arranged with the cylinder, and the circular truncated The side surface and the cylindrical side surface form a second ventilation opening, and the shape of the second ventilation opening is annular.

Specifically, the diameter of the upper bottom surface of the frustum shape is larger than the diameter of the cylindrical bottom surface.

Preferably, the width of the ring is 0.25-1 mm.

Further, the blowing member is also provided with an air storage bag, a control unit, a blowing pipe and a plug-in pipe, the air storage bag is connected with one end of the blowing pipe through the control unit, and the pipe wall of the blowing pipe is sleeved. With the plug-in pipe, the nozzle unit is connected outside the pipe wall of the blowing pipe through the plug-in pipe.

Specifically, the nozzle unit is further provided with a first vent, the blowing pipe is provided with a first opening, and the plug-in pipe is provided with a second opening, and the first opening and the second opening together form a first vent mouth.

Specifically, the first opening and the second opening have the same size.

Specifically, the filter cartridge cleaning device is further provided with a mounting plate, the end of the filter cartridge is connected with the mounting plate, and the mounting plate is fixed on the inner side wall of the box.

Preferably, the number of the nozzle units is the same as the number of filter cartridges.

Specifically, the filter cartridge ash cleaning device is further provided with a flow distribution plate and an ash discharge valve, the flow distribution plate is arranged at the bottom of the filter cartridge, and the ash discharge valve is arranged at the bottom of the box body.

Compared with the prior art, the beneficial effect of the present invention is: when the filter cartridge dust collector needs to clean the dust, the compressible dust-cleaning airflow leaves the nozzle in a ring shape, and the contact area with the surrounding air is increased, and at the same time, the air flow in the ring nozzle and the surrounding air are enlarged. There are two induced entrainment effects between the nozzle and the filter cartridge, which greatly improves the cleaning performance. The annular nozzle also enhances the divergent effect of the cleaning air flow, increases the contact area between the cleaning air flow and the filter material of the filter cartridge, and improves the uniformity of the cleaning of the filter cartridge dust collector.

Description of drawings

1 is a cross-sectional view of a spray pipe and a nozzle unit of Embodiment 1;

Fig. 2 is the overall structure schematic diagram of embodiment 1;

Fig. 3 is the partial structure schematic diagram of embodiment 1;

Fig. 4 is the side wall pressure peak value comparison diagram when the device and the traditional ash cleaning device are cleaned, A represents the ash cleaning device of the present utility model, and B represents the traditional ash cleaning device;

The symbols in the figure indicate: 1. Box body; 2. Air storage bag; 3. Control unit; 4. Blowing pipe; 5. Air outlet; 6. Plug-in pipe; 7. Nozzle unit; 7-2, the first side wall; 7-3, the second vent; 7-4, the cavity; 7-5, the second side wall; 8, the mounting plate; 9, the filter cartridge; 10, the dividing plate; 11. Air inlet; 12. Ash discharge valve.

The present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

Detailed ways

Specific embodiments of the present utility model are given below. It should be noted that the present utility model is not limited to the following specific embodiments, and all equivalent transformations made on the basis of the technical solutions of the present application all fall into the protection scope of the present utility model.

In the dust cleaning device of the filter cartridge dust collector based on the annular air flow protected by the utility model, the dust cleaning air flow performs two induction and entrainment effects on the second side wall inside the nozzle unit and between the nozzle unit and the filter cartridge, plus the The surrounding air contact area is increased, and its cleaning performance is greatly improved. The annular nozzle unit enhances the divergent effect of the cleaning air flow, increases the contact area between the cleaning air flow and the filter material of the filter cartridge, and improves the uniformity of cleaning the filter cartridge dust collector.

In the case of no further description, "above", "below", "top" and "bottom" in the present utility model are the relative positions between the components of the filter cartridge cleaning device.

Example 1:

Following the above technical solution, the present embodiment provides a filter cartridge dust collector based on annular airflow, as shown in Figures 1 to 4, comprising a box body 1, a blowing member, an air outlet 5, a filter cartridge 9 and The air inlet 11, the top of the box body 1 is provided with an air outlet 5, the bottom side end of the box body 1 is provided with an air inlet 11, a filter cartridge 9 is arranged inside the box body 1, and the blowing member is penetrated on the box body 1, and the spray The blowing member includes a nozzle unit 7, which is coaxially disposed above the filter cartridge 9, and the nozzle unit 7 cleans the filter cartridge 9 based on the annular airflow. The number of nozzle units 7 is the same as the number of filter cartridges 9 .

The nozzle unit 7 is provided with a first side wall 7-2, a second vent 7-3, a cavity 7-4, and a second side wall 7-5. The nozzle unit 7 is a cylinder with radial ventilation, and the first side wall is The shape of 7-2 is a cylinder with radial ventilation, the shape of the second side wall 7-5 is a truncated cone with radial ventilation, and the first side wall 7-2 and the second side wall 7-5 are both arranged coaxially with the cylinder Inside the cylinder, the diameter of the upper bottom surface of the truncated cone is larger than the diameter of the bottom surface of the cylinder, the side surface of the truncated cone and the side surface of the cylinder form a second vent 7-3, and the shape of the second vent 7-3 is annular. The width of the ring can be optionally 0.25-1 mm.

The blowing member is also provided with an air storage bag 2, a control unit 3, a blowing pipe 4 and a plug-in pipe 6. The air storage bag 2 is connected with one end of the spraying pipe 4 through the control unit 3, and the pipe wall of the spraying pipe 4 is sleeved with a plug The nozzle unit 7 is connected to the outside of the pipe wall of the blowing pipe 4 through the plug-in pipe 6 . Among them, the control unit 3 can choose a common electromagnetic pulse valve to control the opening and closing of the ash cleaning device of the filter cartridge 9. The control principle of this part also adopts the common control principle, and the air storage bag 2 provides the air source for the ash cleaning device of the filter cartridge 9 .

The nozzle unit 7 is also provided with a first vent 7-1, the blowing pipe 4 is provided with a first opening, and the plug-in pipe 6 is provided with a second opening, and the first opening and the second opening together form a first vent 7-1. Preferably, the first opening is the same size as the second opening.

The filter cartridge 9 ash cleaning device is also provided with a mounting plate 8, the end of the filter cartridge 9 is connected with the mounting plate 8, and the mounting plate 8 is fixed on the inner side wall of the box body 1. The ash cleaning device of the filter cartridge 9 is also provided with a distribution plate 10 and an ash discharge valve.

To sum up, the working principle of the filter cartridge dust collector based on the annular airflow of the present invention is as follows: after the filter cartridge 9 dust collector works for a period of time, particles such as dust will accumulate on the surface of the filter cartridge 9 to affect the filtration efficiency, so it needs to be timely. Clean up. When cleaning the dust, the control unit 3 is turned on, and the high-speed compressible air in the air storage bag 2 enters the blowing pipe 4, and enters the corresponding annular nozzle unit 7 (radial) through the plug-in pipe 6 along the tangential direction from the first air port 7-1. In the ventilated cylinder), the cavity 7-4 of the nozzle unit 7 is instantly filled with the dust-cleaning airflow, and then the dust-cleaning airflow is uniformly and effectively dispersed along the cylinder, and finally makes it flow from the annular second ventilation port 7. -3 flows out, and the annular air flow conducts two induced entrainment effects on the second side wall 7-5 inside the nozzle unit 7 and between the nozzle unit 7 and the filter cartridge 9, respectively, as shown by the dashed arrows in Figure 1, entering The flow rate of the cleaning air flow of the filter cartridge 9 is increased, which greatly improves the cleaning performance. At the same time, the dust-cleaning airflow entering the filter cartridge 9 is in a diffuse form, and the divergence effect is enhanced, and the contact area between the dust-cleaning airflow and the filter material of the filter cartridge 9 is increased, and the impact on the bottom of the filter cartridge 9 is reduced. The cleaning uniformity has also been improved.

Example 2

Using the computational fluid dynamics (CFD) method, the filter cartridge length of 660mm, the injection pressure of 0.3MPa, and the injection time of 100ms were carried out on the filter cartridge dust collector based on annular airflow and the traditional filter cartridge dust collector of the present utility model. Unsteady Numerical Simulation.

The peak pressure is the maximum pressure obtained by monitoring the curve when fluent is simulating. The peak pressure of the side wall and the unbalance coefficient are used as the indicators to evaluate the cleaning performance and uniformity of the filter cartridge. The peak pressure of the side wall refers to the pulse jet cleaning. During the process, the maximum static pressure generated by the high-speed cleaning airflow on the inner wall surface of the filter cartridge or filter bag. The unbalance factor is defined as the ratio of the peak pressure of the sidewall of multiple measuring points of the filter cartridge to the average value of the peak pressure of the sidewall of the multiple measuring points. The closer the unbalance coefficient is to 1, the better the uniformity of cleaning the inner wall of the filter cartridge 9 along the length direction, and the worse the uniformity of cleaning is on the contrary.

As can be seen from Figure 4, the peak pressures of the side walls of the 5 measuring points of the ash cleaning device (A) of the present utility model are much larger than the peak pressures of the side walls of the 5 measuring points of the traditional circular airflow ash cleaning device (B). , indicating that the dust cleaning performance of the filter cartridge dust collector based on the annular airflow of the present utility model is much stronger than that of the traditional circular airflow dust removal device. Comparing the unbalance coefficients of the two devices, see Table 1. It can be found that the unbalance coefficient of the ash cleaning device of the present invention is closer to 1, and its overall ash cleaning uniformity is better than that of the traditional circular airflow ash cleaning device.

Table 1 Unbalance coefficient of two different cleaning devices

The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and the descriptions in the above-mentioned embodiments and the description are only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have Various changes and improvements, such as the connection method of the nozzle unit and the blowing pipe, the inclination angle of the second side wall of the nozzle unit, etc., all fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (9)

1. A dust removal device of a filter cartridge dust remover based on annular airflow comprises a box body (1), a blowing member, an air outlet (5), a filter cartridge (9) and an air inlet (11), wherein the air outlet (5) is formed in the top of the box body (1), the air inlet (11) is formed in the side end of the bottom of the box body (1), the filter cartridge (9) is arranged in the box body (1), and the blowing member penetrates through the box body (1), and is characterized in that the blowing member comprises a nozzle unit (7), the nozzle unit (7) is coaxially arranged above the filter cartridge (9), and the nozzle unit (7) cleans the filter cartridge (9) based on the annular airflow;

the nozzle unit (7) is a cylinder which is ventilated in the radial direction, the nozzle unit (7) is provided with a first side wall (7-2), a second ventilating opening (7-3), a cavity (7-4) and a second side wall (7-5), the first side wall (7-2) is in a cylindrical shape which is ventilated in the radial direction, the second side wall (7-5) is in a circular table shape which is ventilated in the radial direction, the first side wall (7-2) and the second side wall (7-5) are coaxially arranged with the cylinder, the side surface of the circular table shape and the side surface of the cylindrical shape form the second ventilating opening (7-3), and the second ventilating opening (7-3) is in an annular shape.

2. The annular gas flow based filter cartridge ash removal device of claim 1, wherein the diameter of the upper base of the truncated cone shape is greater than the diameter of the cylindrical base.

3. The annular gas flow based filter cartridge ash removal device of claim 1, wherein the width of the annulus is 0.25 to 1 mm.

4. The annular airflow-based dust removal device for the filter cartridges of the dust remover, as claimed in claim 1, wherein the blowing member is further provided with a gas storage bag (2), a control unit (3), a blowing pipe (4) and an insertion pipe (6), the gas storage bag (2) is connected with one end of the blowing pipe (4) through the control unit (3), the insertion pipe (6) is sleeved on the pipe wall of the blowing pipe (4), and the nozzle unit (7) is connected outside the pipe wall of the blowing pipe (4) through the insertion pipe (6).

5. The annular gas flow-based cartridge deduster according to claim 4, wherein said nozzle unit (7) is further provided with a first air vent (7-1), said blowing pipe (4) is provided with a first opening, said insertion pipe (6) is provided with a second opening, and said first opening and said second opening together form a first air vent (7-1).

6. The annular gas flow based filter cartridge ash removal device of claim 5, wherein the first opening is the same size as the second opening.

7. The annular airflow-based filter cartridge dust removal device of claim 1, wherein the filter cartridge (9) dust removal device is further provided with a mounting plate (8), the end of the filter cartridge (9) is connected with the mounting plate (8), and the mounting plate (8) is fixed on the inner side wall of the box body (1).

8. The annular gas flow-based cartridge deduster as claimed in claim 1, wherein the number of said nozzle units (7) is the same as the number of said cartridges (9).

9. The annular airflow-based filter cartridge dust remover as recited in claim 1, characterized in that said filter cartridge (9) dust remover is further provided with a splitter plate (10) and an ash discharge valve (12), said splitter plate (10) is arranged at the bottom of said filter cartridge (9), and said ash discharge valve (12) is arranged at the bottom of said box body (1).

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