Bag-type dust collector capable of being quickly assembled and disassembled

Abstract

The utility model relates to a bag-type dust collector capable of being quickly assembled and disassembled, and belongs to the technical field of physical separation. Comprising an upper box body, a middle box body, a lower box body, a blowing device, an air seal machine, an ash discharging device and supporting legs, the upper box body, the middle box body and the lower box body are communicated from top to bottom, the upper box body is used for collecting filtered clean gas, an air outlet is formed in the top of the upper box body, the blowing device is communicated with the upper box body, the air seal machine is arranged at the bottom of the lower box body, and the ash discharging device is arranged in the lower box body. The upper part of the middle box body is provided with an air inlet along the tangential direction; the inner cavity of the middle box body is provided with a plurality of filter bags; the bottom of the inner cavity of the upper box body is provided with a pore plate; the top of the inner cavity of the lower box body is provided with a grid; according to the utility model, the dust and gas separation effect is improved, and the purified gas outlet rate is improved.

Description

Technical Field

[0001] The utility model relates to a bag dust collector which can be quickly assembled and disassembled, and belongs to the technical field of physical separation. Background Art

[0002] TBLMy pulse cloth drum dust collector belongs to bag type high pressure reverse jet pulse type dust collector. T stands for general machinery and equipment for grain and oil, BL stands for cloth drum dust filter, M stands for pulse, and y stands for cylinder. It has the advantages of reliable performance, high dust removal efficiency, and easy operation and maintenance. Pulse cloth drum dust collector can be widely used in the industries of grain, feed processing, machinery, metallurgy, building materials and cement for air suction and dust removal, and dust cleaning or recovery and filtration in pneumatic conveying.

[0003] Chinese patent (CN103463882A) discloses a bag dust collector, comprising: a box body, in which a blowing pipe, a filter bag frame, an air bag, and a flower plate are arranged, the blowing pipe is connected to an electromagnetic pulse valve, the electromagnetic pulse valve is connected to the air bag, the electromagnetic pulse valve is electrically connected to a controller, the flower plate is connected to a venturi, the venturi is connected to a dust filter bag, the dust filter bag is installed on the filter bag frame, an ash hopper is installed at the lower part of the box body, and a dust gas inlet is arranged on the ash hopper. The present invention is used for air filtration.

[0004] The problem with the above patent is that the dust gas inlet is placed on the ash hopper. After the dust gas enters the ash hopper, it is difficult to rise to the clean gas outlet under the action of gravity because it is far away from the clean gas outlet. On the other hand, when the dust gas enters the ash hopper, the impact force of the gas is relatively large, and the dust impurities that have been scattered on the ash hopper fly up again under the action of the dust gas and mix with the dust gas, thereby reducing the dust removal effect. Secondly, the cloth bag in the above patent cannot be detachable. Once the cloth bag is damaged, the maintenance cost is high. Utility Model Content

[0005] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art, to provide a bag dust collector that can be quickly assembled and disassembled, to improve the separation effect of dust and gas, to increase the clean gas outlet rate, and to realize the detachability of the bag.

[0006] The utility model discloses a bag dust collector which can be quickly loaded and unloaded, comprising an upper box body, a middle box body, a lower box body, a blowing device, an air shutoff device, an ash discharge device and legs. The upper box body, the middle box body and the lower box body are connected and arranged from top to bottom. The upper box body is used to collect clean gas after filtration. An air outlet is arranged on the top of the upper box body. The blowing device is connected and arranged with the upper box body. The air shutoff device is placed at the bottom of the lower box body. The ash discharge device is placed in the lower box body. The lower box body is fixed to the ground by legs. An air inlet is arranged tangentially on the upper part of the middle box body. A plurality of filter bags are arranged in the inner cavity of the middle box body. A perforated plate is arranged at the bottom of the inner cavity of the upper box body. A grille is arranged at the top of the inner cavity of the lower box body. A rib frame for supporting the filter bag is arranged in the filter bag. Both ends of the filter bag are detachably connected to the perforated plate and the grille respectively by the rib frame.

[0007] By setting an air inlet arranged tangentially to the middle box, dust and gas are rotated and separated in the middle box, so that the separation effect of dust and gas is better. Dust with larger particle size in the dust-containing gas settles first, and at the same time, the service life of the cloth bag is improved. The dust-containing gas with small particle size becomes purified air after being filtered by the filter bag, enters the upper box, and is discharged from the air outlet. Dust accumulates on the outer surface of the filter bag. When the accumulated dust reaches a certain amount, gas is flushed into the filter bag through the blowing device, and the filter bag expands rapidly, so that the dust accumulated on the surface of the filter bag is shaken off and enters the dust discharge device in the lower box, and is finally discharged through the air shut-off device. Such periodic blowing and cleaning can keep the filter bag in an effective filtering state and ensure the normal operation of the dust removal system. By setting the orifice plate and the grille, the filter bag is removable for easy replacement and maintenance.

[0008] The lower box is arranged in a cone shape with a width at the top and a narrowness at the bottom. The cone bucket dust discharge utilizes the gravity of the dust to collect the dust along the cone surface, thereby achieving the purpose of dust discharge.

[0009] The side wall of the lower box body is provided with an inspection hole, and a cover is provided corresponding to the inspection hole. After the cover is opened, the dust discharge device can be inspected.

[0010] The bottom of the lower box is flat, and a scraper is also arranged in the lower box, and the scraper is used in conjunction with the air lock. When the box is large in size, the distance between the lower box and the ground is small, and the bottom of the lower box needs to be arranged in a plane so that the bottom of the lower box does not contact the ground. The scraper is used to gather dust at the bottom of the box and then discharge it from the air lock.

[0011] The side wall of the middle box body is provided with an inspection door. The dust collection condition on the surface of the filter bag can be checked by opening the inspection door.

[0012] A fan is arranged on the upper box body corresponding to the air outlet. When the fan is started, negative pressure is formed in the upper box body, so that the purified air passing through the filter bag can enter the upper box body more easily, thereby discharging the purified air.

[0013] The top of the rib frame is mounted on the orifice plate through a rubber expansion ring. The rubber expansion ring is provided to make the rib frame installation simple and reliable, and convenient for assembly and disassembly.

[0014] The spraying device includes a pulse controller, a solenoid valve, an air bag, a spray main pipe and a plurality of spray branches. The pulse controller is electrically connected to the solenoid valve, the air bag is connected to the spray main pipe through the solenoid valve, and the spray branch pipe is inserted into the filter bag. The pulse controller is the main control device of the dust collector spraying and cleaning system, which controls the opening and closing of the solenoid valve. The air bag can store a certain amount of compressed air to meet the needs of spraying and cleaning. The air bag is provided with an outlet pipe and an inlet pipe. The outlet pipe is connected to the solenoid valve, and the inlet pipe is connected to the air source processor. The compressed air that meets the parameter requirements is provided by the air compressor or the centralized air supply pipe. After filtering dust, water and oil through the air source processor, it enters the air bag and enters the spraying device under the control of the solenoid valve to realize the cleaning work. One solenoid valve can spray multiple bags at the same time.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) The utility model sets an air inlet arranged tangentially to the middle box body, so that dust and gas are rotated and separated in the middle box body, so that the dust and gas separation effect is better, wherein the dust with larger particle size in the dust-containing gas settles first, and at the same time, the service life of the bag is improved. The air inlet is closer to the air outlet, and the dust-containing gas with small particle size becomes purified air after being filtered by the filter bag, which is easier to enter the upper box body and be discharged from the air outlet. By setting the perforated plate and the grille, the filter bag is detachable, which is convenient for replacement and maintenance.

[0017] (2) The bottom of the lower box is flat, and a scraper is also provided inside the lower box, which is used in conjunction with the air lock. When the box is large, the distance between the lower box and the ground is small, and the bottom of the lower box needs to be flat so that the bottom of the lower box does not contact the ground. The scraper is used to gather the dust at the bottom of the box and then discharge it from the air lock.

[0018] (3) The spraying device includes a pulse controller, a solenoid valve, an air bag, a spray main pipe and several spray branches. The pulse controller is electrically connected to the solenoid valve, the air bag is connected to the spray main pipe through the solenoid valve, and the spray branch pipe is inserted into the filter bag. The pulse controller is the main control device of the dust collector spraying and cleaning system, which controls the opening and closing of the solenoid valve. The air bag can store a certain amount of compressed air to meet the needs of spraying and cleaning. The air bag is provided with an outlet pipe and an inlet pipe. The outlet pipe is connected to the solenoid valve, and the inlet pipe is connected to the air source processor. The compressed air that meets the parameter requirements is provided by the air compressor or the centralized air supply pipe. After filtering dust, water and oil through the air source processor, it enters the air bag and enters the spraying device under the control of the solenoid valve to realize the cleaning work. One solenoid valve can spray multiple bags at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is a schematic diagram of the main structure of Embodiment 1 of the present utility model;

[0020] Figure 2 It is a schematic diagram of the internal structure of the middle box;

[0021] Figure 3 It is a schematic diagram of the top view of the structure of Embodiment 1 of the utility model;

[0022] Figure 4 1. It is a schematic diagram of the structure of the upper box from a top view;

[0023] Figure 5 It is a schematic diagram of the main structure of the grille;

[0024] Figure 6 It is a structural diagram of the injection main pipe and the injection branch pipe;

[0025] Figure 7 It is a schematic diagram of the top structure of the upper cover.

[0026] In the figure: 1. Support legs; 2. Air shutoff device; 3. Cover; 4. Lower box; 5. Middle box; 6. Inspection door; 7. Air bag; 8. Solenoid valve; 9. Upper box; 10. Fan; 11. Air inlet; 12. Steel frame; 13. Filter bag; 14. Injection main pipe; 15. Injection branch pipe; 16. Orifice plate; 17. Through hole; 18. Grille; 19. Air outlet; 20. Upper cover. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with embodiments:

[0028] Example 1

[0029] like Figure 1 to Figure 6 As shown, the utility model is a bag dust collector that can be quickly assembled and disassembled, such as Figure 1 As shown, it includes an upper box body 9, a middle box body 5, a lower box body 4, a blowing device, an air lock 2, an ash discharge device and a leg 1. The upper box body 9, the middle box body 5 and the lower box body 4 are connected from top to bottom. The upper box body 9 is used to collect the clean gas after filtration. The upper cover plate 20 is set on the top of the upper box body 9, and the middle part of the upper cover plate 20 is provided with an air outlet 19, as shown in FIG. Figure 7 As shown; the blowing device is connected to the upper box 9, the air shutoff device 2 is placed at the bottom of the lower box 4, the ash discharge device is placed in the lower box 4, the lower box 4 is fixed to the ground by the legs 1, and the upper part of the middle box 5 is tangentially provided with an air inlet 11, as shown Figure 3 As shown; a plurality of filter bags 13 are provided in the inner cavity of the middle box body 5. Taking the TBLMy25 pulse dust collector as an example, the number of filter bags 13 is 25, and a perforated plate 16 is provided at the bottom of the inner cavity of the upper box body 9. The number of through holes 17 on the perforated plate 16 is 25, such as Figure 4 As shown; a grille 18 is provided at the top of the inner cavity of the lower box body 4, and the grille 18 is as shown Figure 5 As shown, a rib frame 12 for supporting the filter bag 13 is provided in the filter bag 13, and the two ends of the filter bag 13 are detachably connected to the orifice plate 16 and the grille 18 respectively through the rib frame 12, and the top of the rib frame 12 is installed on the orifice plate 16 through a rubber expansion ring, as shown in FIG. Figure 2 As shown; the material of the filter bag 13 can be needle-punched felt polyester or flannel, and the applicable temperature is below 120°C;

[0030] The lower box body 4 is arranged in a conical shape with a width at the top and a narrowness at the bottom.

[0031] An inspection hole is provided on the side wall of the lower box body 4, and a cover 3 is provided corresponding to the inspection hole.

[0032] An inspection door 6 is provided on the side wall of the middle box body 5 .

[0033] The fan 10 is arranged on the upper box body 9 corresponding to the air outlet 19. For the dust collector with 12, 25 or 39 filter bags 13, an upper cover plate 20 is arranged on the top of the upper box body 9, the air outlet 19 is arranged in the middle of the upper cover plate 20, and the fan 10 is placed on the upper cover plate 20; however, for the dust collector with more than 39 filter bags 13, since the fan 10 used is larger, the fan 10 needs to be arranged on the side of the upper box body 9, and the air outlet 19 is connected to the fan 10 through a pipeline.

[0034] The spraying device includes a pulse controller, a solenoid valve 8, an air bag 7, a spraying main pipe 14 and several spraying branches 15. The pulse controller is electrically connected to the solenoid valve 8. The air bag 7 is connected to the spraying main pipe 14 through the solenoid valve 8. For the TBLMy25 pulse dust collector, the number of the spraying main pipes 14 is 5, and a solenoid valve 8 is arranged on each spraying main pipe 14. Each spraying main pipe 14 is provided with 5 spraying branches 15 corresponding to the filter bag 13 along the length direction, and each spraying branch 15 is inserted into the filter bag 13. The air bag 7 is provided with an outlet pipe and an inlet pipe. The outlet pipe is connected to the solenoid valve 8, and the inlet pipe is connected to the air source processor. The compressed air that meets the parameter requirements is provided by the air compressor or the centralized air supply pipe, and enters the air bag 7 after filtering dust, water and oil through the air source processor. The technical parameters of the pulse controller are: pulse width adjustment range: 0.03 seconds to 0.3 seconds; pulse interval adjustment range: 3 seconds to 60 seconds; output voltage: DC24V; output current: 0.8A to 1A; output circuit: 1 to 60 circuits, optional or matching the number of solenoid valves 8 used in the dust collector.

[0035] Working process: When the dust collector is in working state, observe the working state of the pulse controller and the electromagnetic valve 8. After confirming that they are normal, turn off the fan 10 and the pulse controller for a short time, open the inspection door 6 to check the dust collection on the surface of the filter bag 13, and adjust the pulse width and pulse interval according to the dust concentration of the dust-laden gas. During the period when the dust collector starts to operate normally, it is necessary to constantly observe its working state, observe or test the dust collector to better adjust the pulse width and interval to prevent excessive or insufficient cleaning, both of which will affect the working state and performance of the dust collector. When over-cleaning, please lengthen the pulse interval and shorten the pulse width. When insufficient cleaning, the opposite is true.

[0036] The description of the direction and relative position relationship of the structure in the present invention, such as the description of front, back, left, right, up, and down, does not constitute a limitation of the present invention, but is only for the convenience of description.

Claims

1. A bag dust collector that can be quickly assembled and disassembled, comprising an upper box (9), a middle box (5), a lower box (4), a blowing device, an air lock (2), an ash discharge device and a support leg (1), wherein the upper box (9), the middle box (5) and the lower box (4) are connected from top to bottom, the upper box (9) is used to collect clean gas after filtration, an air outlet (19) is arranged at the top of the upper box (9), the blowing device is connected to the upper box (9), the air lock (2) is arranged at the bottom of the lower box (4), the ash discharge device is arranged in the lower box (4), and the lower box (4) is fixed to the ground by the support leg (1), characterized in that: An air inlet (11) is tangentially arranged at the upper part of the middle box body (5), a plurality of filter bags (13) are arranged in the inner cavity of the middle box body (5), a perforated plate (16) is arranged at the bottom of the inner cavity of the upper box body (9), a grille (18) is arranged at the top of the inner cavity of the lower box body (4), a rib frame (12) for supporting the filter bag (13) is arranged in the filter bag (13), and two ends of the filter bag (13) are detachably connected to the perforated plate (16) and the grille (18) respectively through the rib frame (12).

2. The quickly detachable bag dust collector according to claim 1 is characterized in that: The lower box body (4) is arranged in a conical shape with a width at the top and a narrowness at the bottom.

3. The quickly detachable bag dust collector according to claim 2 is characterized in that: An inspection hole is provided on the side wall of the lower box body (4), and a matching cover (3) is provided corresponding to the inspection hole.

4. The quickly detachable bag dust collector according to claim 1, characterized in that: The bottom of the lower box body (4) is flat, and a scraper is arranged inside the lower box body (4), and the scraper is used in conjunction with the air lock (2).

5. The quickly detachable bag dust collector according to claim 1, characterized in that: An inspection door (6) is arranged on the side wall of the middle box body (5).

6. The quickly detachable bag dust collector according to claim 1, characterized in that: A fan (10) is arranged on the upper box body (9) corresponding to the air outlet (19).

7. The quickly detachable bag dust collector according to claim 4, characterized in that: The top of the rib frame (12) is mounted on the orifice plate (16) via a rubber expansion ring.

8. The bag dust collector capable of rapid assembly and disassembly according to any one of claims 1 to 7, characterized in that: The spraying device comprises a pulse controller, an electromagnetic valve (8), an air bag (7), a spraying main pipe (14) and a plurality of spraying branch pipes (15). The pulse controller is electrically connected to the electromagnetic valve (8), the air bag (7) is connected to the spraying main pipe (14) through the electromagnetic valve (8), and the spraying branch pipes (15) are inserted into the filter bag (13).

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