Filter cartridge dust remover applied to belt conveyor

Abstract

The utility model provides a filter cartridge deduster applied to a belt conveyor, which comprises a rack, a box body and a fan, the box body is arranged on the rack, and the interior of the box body is divided into a rectangular filter chamber and an inverted L-shaped air purification chamber by an inverted L-shaped plate; a tubesheet is arranged at the top of the rectangular filter chamber, a plurality of filter cartridges are downwards arranged on the tubesheet, a hopper communicated with the rectangular filter chamber is arranged at the lower end of the rectangular filter chamber, and an opening in the lower end of the hopper forms an air inlet; an air outlet pipe is arranged at an opening in one side wall, far away from the rectangular filtering chamber, of the inverted L-shaped air purifying chamber; an air inlet of the fan is communicated with the air outlet pipe. The filter cartridge dust remover is directly arranged at the tail feeding position and near the head discharging position of the belt conveyor, raised dust is captured to the maximum degree, the dust is filtered and collected and then falls onto a belt through the dust removal mechanism, and material loss is reduced; the annular jet flow nozzle is adopted, and dust can be effectively removed; the conical column body is arranged in the filter cartridge, so that the flow field in the filter cartridge is improved, and the ash removal effect is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal, and particularly relates to a cartridge dust collector applied to a belt conveyor. Background Art

[0002] Belt conveyors are essential equipment for conveying materials in the production processes of many industries. Especially when applied to industries such as cement, construction, mixing plants, chemical industry, coal, glass, and ceramsite sand, the dust generated at the tail feeding part and the head discharging part is relatively large.

[0003] To meet the environmental protection requirements and provide a good working environment for workers has become the primary issue today. Most industrial and mining enterprises choose to install dust collectors and dust-proof covers on the original belt conveyors. Therefore, it is of great significance to develop a dust collector that can be applied to belt conveyors. Summary of the Invention

[0004] The utility model provides a cartridge dust collector applied to a belt conveyor, which is relatively small in volume, convenient for assembly, and economical and practical.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A cartridge dust collector applied to a belt conveyor includes a frame, a box body, and a fan. The box body is arranged on the frame. An inverted L-shaped plate is arranged inside the box body, and the inside of the box body is divided into a rectangular filtering chamber and an inverted L-shaped clean air chamber by the inverted L-shaped plate. The top of the rectangular filtering chamber is a perforated plate, and a number of filter cartridges are arranged downward on the perforated plate. The lower end of the rectangular filtering chamber is provided with a hopper communicated therewith, and the lower end of the hopper is opened to form an air inlet. The inverted L-shaped clean air chamber is hermetically arranged, and an air outlet pipe is arranged at an opening on a side wall far away from the rectangular filtering chamber. The fan is arranged outside one end of the box body far away from the rectangular filtering chamber through a bracket, and the air inlet of the fan is communicated with the air outlet pipe.

[0007] Preferably, it further includes a dust cleaning mechanism. The dust cleaning mechanism includes an air bag arranged outside the box body through a support platform, a number of electromagnetic pulse valves, and a number of spray pipes. A number of air pipes are arranged at intervals on the top of the air bag. The air inlet valve ports of the number of electromagnetic pulse valves are respectively and correspondingly communicated with the number of air pipes. The number of spray pipes are arranged in the inverted L-shaped clean air chamber and above the rectangular filtering chamber. One end of the spray pipe is fixed on the inner wall of the inverted L-shaped clean air chamber, and the other end extends out of the inverted L-shaped clean air chamber and is connected with the air outlet valve port of the electromagnetic pulse valve. Nozzles are arranged at positions of the spray pipes facing the filter cartridges.

[0008] Preferably, the nozzle is an annular jet nozzle, which includes a cylinder. A diversion channel penetrating the cylinder is provided in the cylinder. The diversion channel consists of a cylindrical channel and a frustum-shaped channel. The frustum-shaped channel is arranged at the lower end of the cylindrical channel and is communicated with it. The diameter of the smallest end at the top of the frustum-shaped channel is larger than that of the cylindrical channel.

[0009] Preferably, the height ratio of the cylindrical channel to the frustum-shaped channel is 1:4.

[0010] Preferably, a conical cylinder is arranged inside the filter cartridge. The conical cylinder is fixed at the center of the bottom of the filter cartridge, and its top is a conical surface. The top of the conical cylinder is close to but does not extend out of the top of the filter cartridge.

[0011] Preferably, the top cover plate of the box body is detachably arranged, and a maintenance door is provided on the side wall of the box body facing the rectangular filter chamber.

[0012] Preferably, a connecting flange is provided at the air inlet at the lower end of the hopper. A rectangular canvas tube is detachably arranged at the lower end of the connecting flange, and a pressing plate is arranged on the outer side of the lower end of the rectangular canvas tube.

[0013] Preferably, the frame is a rectangular frame. The box body is arranged on the top of the rectangular frame, and its hopper is located inside the rectangular frame. First strengthening rods are arranged at the lower parts of the front and rear supports of the rectangular frame. Two second strengthening rods are symmetrically arranged obliquely above the first strengthening rods. The third strengthening rods are detachably arranged at the lower parts of the left and right supports of the rectangular frame.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: This filter cartridge dust collector is directly arranged near the tail feeding place and the head discharging place of the belt conveyor, capturing the raised dust to the greatest extent and improving the on-site environment. At the same time, manual ash discharging is not required. After the dust is filtered and collected, it falls back onto the belt through the ash cleaning mechanism, reducing material loss. In addition, by using an annular jet nozzle, the negative pressure area at the inlet of the filter cartridge is relatively small. The primary air flow can induce and entrain the secondary air flow into the filter cartridge. The air flow entering the filter cartridge tends to be stable and fully expands. The jet air flow flows out evenly and stably from the filter cartridge wall for effective ash cleaning. At the same time, a conical cylinder is arranged inside the filter cartridge, which is beneficial to improving the internal flow field of the filter cartridge and the pressure distribution, further improving the ash cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model.

[0016] Figure 2 is a left view of the box body of the present utility model when it is opened.

[0017] Figure 3 isFigure 2 Enlarged view of part A in

[0018] Figure 4 It is a top view schematic diagram of the present utility model with the top cover removed.

[0019] In the drawings: 1, frame; 2, box body; 3, fan; 4, inverted L-shaped plate; 5, rectangular filter chamber; 6, inverted L-shaped clean air chamber; 7, filter cartridge; 8, hopper; 9, air outlet pipe; 10, air bag; 11, electromagnetic pulse valve; 12, blowpipe; 13, nozzle; 14, conical column; 15, inspection door; 16, rectangular canvas tube; 17, pressing plate; 18, first reinforcing rod; 19, second reinforcing rod; 20, third reinforcing rod; 131, column; 132, cylindrical channel; 133, frustum-shaped channel. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0021] A filter cartridge dust collector applied to a belt conveyor provided by the present utility model includes a frame 1, a box body 2, and a fan 3. The box body 2 is arranged on the frame 1. An inverted L-shaped plate 4 is arranged inside the box body 2. The inside of the box body 2 is divided into a rectangular filter chamber 5 and an inverted L-shaped clean air chamber 6 by the inverted L-shaped plate 4. The top of the rectangular filter chamber 5 is a perforated plate, and a plurality of filter cartridges 7 are arranged downward on the perforated plate. The lower end of the rectangular filter chamber 5 is provided with a hopper 8 connected thereto. The lower end of the hopper 8 is opened to form an air inlet. The inverted L-shaped clean air chamber 6 is enclosed. An air outlet pipe 9 is opened on a side wall away from the rectangular filter chamber 6. The fan 3 is arranged outside one end of the box body away from the rectangular filter chamber through a bracket. The air inlet of the fan 3 is communicated with the air outlet pipe. The setting of the inverted L-shaped clean air chamber and the fan on one side can effectively lengthen and make the air duct relatively bent. After the fan is started, the air flow can stably and relatively evenly enter the rectangular filter chamber. Dust is adsorbed by the filter cartridges, and clean air enters the inverted L-shaped clean air chamber and is led out by the fan.

[0022] In order to achieve maintenance-free, a cleaning mechanism is also included, which includes an air bag 10, a plurality of electromagnetic pulse valves 11, and a plurality of blowing pipes 12 arranged on the outside of the box body through a supporting platform. A plurality of air pipes are arranged at intervals on the top of the air bag 10. The air inlet valve ports of the plurality of electromagnetic pulse valves 11 are connected to the plurality of air pipes one by one. The plurality of blowing pipes 12 are arranged in the inverted L-shaped clean air chamber and are located above the rectangular filter chamber. One end of the blowing pipe 12 is fixed to the inner wall of the inverted L-shaped clean air chamber, and the other end extends out of the inverted L-shaped clean air chamber and is connected to the air outlet valve port of the electromagnetic pulse valve 11. The blowing pipe 12 is provided with a nozzle 13 at a position facing the filter cartridge 7. When the dust on the surface of the filter cartridge is thick, the electromagnetic pulse valve is opened, and the compressed air in the air bag enters the blowing pipe and is ejected through the nozzle. The compressed air rushes into the filter cartridge, expands rapidly in a short time, and then causes the filter cartridge to expand and vibrate. Under the action of the reverse airflow, the dust attached to the outer surface of the filter cartridge is peeled off and falls into the hopper, and falls from the air inlet to the belt conveyor.

[0023] When in use, the filter cartridge dust collector is directly placed near the tail feeding point and the head discharging point of the belt conveyor to capture the raised dust to the greatest extent and improve the on-site environment. When the dust on the surface of the filter cartridge accumulates to a certain extent, the dust cleaning mechanism is activated to peel off the dust and drop it onto the belt through the air inlet, reducing material loss.

[0024] At present, the nozzles of the cleaning mechanism are mostly cylindrical nozzles. Although the nozzle has a simple structure, it has problems such as uneven distribution of the spray airflow, eccentricity, and incomplete cleaning. In order to improve the spraying effect of the nozzle, in this embodiment, the nozzle 13 is an annular jet nozzle, and the annular jet nozzle includes a column 131. The column 131 is provided with a guide channel that runs through the column. The guide channel is composed of a cylindrical channel 132 and a frustum-shaped channel 133. The frustum-shaped channel 133 is arranged at the lower end of the cylindrical channel 132 and is connected thereto. The diameter of the smallest end of the top of the frustum-shaped channel 133 is greater than the diameter of the cylindrical channel 132. Furthermore, the height ratio of the cylindrical channel 132 to the frustum-shaped channel 133 is 1:4.

[0025] The nozzle can reduce the flow rate and velocity of the impact airflow. The primary airflow will suck a large amount of secondary airflow in the clean air chamber outside the nozzle, allowing more airflow to enter the filter cartridge. The airflow tends to be stable and gradually expands. The sprayed airflow is evenly distributed to the wall of the filter cartridge, achieving effective cleaning and avoiding uneven cleaning caused by eccentric airflow.

[0026] Meanwhile, a conical column 14 is arranged inside the filter cartridge 7. The conical column is made of solid rubber and is fixed at the center of the bottom of the filter cartridge 7. Its top is a conical surface, and the top of the conical column 14 is close to but does not extend beyond the top of the filter cartridge. Arranging a conical column inside the filter cartridge can improve the internal flow field of the filter cartridge. The conical column converts the dynamic pressure energy into static pressure energy by colliding with the airflow obstruction, and at the same time improves the pressure distribution, further enhancing the pulse jet cleaning effect. The settings of the nozzle and the conical column of the filter cartridge can both improve the airflow field and enhance the cleaning effect. The combined setting of the two has a synergistic effect on increasing the jetting pressure at the upper part of the filter cartridge.

[0027] To facilitate the arrangement and disassembly of the filter cartridge and the jetting pipe, the top cover plate of the box body 2 is detachably arranged, and a maintenance door 15 is provided on the side wall of the box body facing the rectangular filter chamber 5.

[0028] Furthermore, a connecting flange is provided at the air inlet at the lower end of the hopper 8. A rectangular canvas tube 16 is detachably connected to the lower end of the connecting flange, and a pressing plate 17 is arranged on the outer side of the lower end of the rectangular canvas tube 16. During use, support plates can be arranged at appropriate positions on the front and rear sides of the belt conveyor frame, and the pressing plate is fixed on the support plates to achieve dust removal. At the same time, different lengths of sail bags can be replaced to adapt to belt conveyors of different heights.

[0029] Meanwhile, to increase the strength of the frame, the frame 1 is a rectangular frame. The box body 2 is arranged on the top of the rectangular frame, and its hopper is located inside the rectangular frame. The lower parts of the front and rear brackets of the rectangular frame are provided with first strengthening bars 18. Two second strengthening bars 19 are symmetrically arranged obliquely above the first strengthening bars 18. The lower parts of the left and right brackets of the rectangular frame are detachably provided with third strengthening bars 20.

Claims

1. A cartridge dust collector applied to a belt conveyor, characterized in that: It includes a frame, a box body, and a fan. The box body is arranged on the frame. An inverted L-shaped plate is provided inside the box body. The inside of the box body is divided into a rectangular filter chamber and an inverted L-shaped clean air chamber by the inverted L-shaped plate. The top of the rectangular filter chamber is a flower plate, and a plurality of filter cartridges are provided downward on the flower plate. A hopper connected thereto is provided at the lower end of the rectangular filter chamber, and an opening at the lower end of the hopper forms an air inlet. The inverted L-shaped clean air chamber is closed, and an air outlet duct is provided at an opening on one side wall away from the rectangular filter chamber. The fan is arranged on the outer side of one end of the box body away from the rectangular filter chamber through a bracket, and the air inlet of the fan is connected to the air outlet duct.

2. The cartridge dust collector for belt conveyor according to claim 1, characterized in that: It also includes a cleaning mechanism, which includes an air bag, a plurality of electromagnetic pulse valves, and a plurality of blowing pipes arranged on the outside of the box body through a supporting platform. A plurality of air pipes are arranged at intervals on the top of the air bag, and the air inlet valve ports of the plurality of electromagnetic pulse valves are connected to the plurality of air pipes in a one-to-one correspondence. A plurality of blowing pipes are arranged in an inverted L-shaped clean air chamber and are located above the rectangular filter chamber. One end of the blowing pipe is fixed to the inner wall of the inverted L-shaped clean air chamber, and the other end extends out of the inverted L-shaped clean air chamber and is connected to the air outlet valve port of the electromagnetic pulse valve. A nozzle is provided on the blowing pipe directly opposite to the filter cartridge.

3. The cartridge dust collector for belt conveyor according to claim 2 is characterized in that: The nozzle is an annular jet nozzle, which includes a cylinder, in which a guide channel is provided that runs through the cylinder, and the guide channel consists of a cylindrical channel and a frustum-shaped channel, and the frustum-shaped channel is arranged at the lower end of the cylindrical channel and is connected thereto, and the diameter of the smallest end of the top of the frustum-shaped channel is greater than the diameter of the cylindrical channel.

4. The cartridge dust collector for belt conveyor according to claim 3 is characterized in that: The height ratio of the cylindrical channel to the frustum-shaped channel is 1:

4.

5. The cartridge dust collector for belt conveyor according to claim 1 is characterized in that: A conical column is arranged inside the filter cartridge, the conical column is fixed at the center of the bottom of the filter cartridge, the top of the conical column is a conical surface, and the top of the conical column is close to but does not extend out of the top of the filter cartridge.

6. The cartridge dust collector for belt conveyor according to claim 1, characterized in that: The top cover plate of the box body is detachably arranged, and an inspection door is provided on the side wall of the box body directly facing the rectangular filter chamber.

7. The cartridge dust collector for belt conveyor according to claim 1 is characterized in that: A connecting flange is arranged at the air inlet at the lower end of the hopper, a rectangular canvas tube is detachably arranged at the lower end of the connecting flange, and a pressing plate is arranged at the outer side of the lower end of the rectangular canvas tube.

8. The cartridge dust collector for belt conveyor according to claim 1, characterized in that: The frame is a rectangular frame, the box is arranged on the top of the rectangular frame, and its hopper is located on the inner side of the rectangular frame. A first reinforcing rod is arranged at the lower part of the front and rear brackets of the rectangular frame, two second reinforcing rods are arranged obliquely and symmetrically above the first reinforcing rod, and a third reinforcing rod is detachably arranged at the lower part of the left and right brackets of the rectangular frame.

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