Dust collecting device for head and tail of cement kiln

Abstract

The utility model discloses a cement kiln head and tail dust collecting device, which belongs to the field of cement processing and comprises a bottom plate, the top of the bottom plate is fixedly connected with an atomizing box and a filter box, the top of the filter box is fixedly connected with an exhaust fan, a communicating pipe is fixedly connected between the atomizing box and the filter box, and an atomizing mechanism is arranged in the atomizing box. A filter mechanism is arranged in the filter box, the filter mechanism comprises a filter plate, a cleaning mechanism is arranged below the filter plate, the cleaning mechanism comprises a mounting frame, a brush roller is rotationally connected between the inner walls of the mounting frame, a plurality of bristles abutting against the filter plate are fixedly connected to the brush roller, and the cleaning mechanism further comprises an air supply assembly and a moving assembly. The cleaning device has the beneficial effects that the cleaning mechanism is arranged, the cleaning mechanism comprises a brush roller, ventilation holes are formed in the brush roller, air is supplied through an air supply assembly while the brush roller cleans the filter plate, dust attached to the filter plate is dried through air blown out of the ventilation holes, the cleaning effect is improved conveniently, and meanwhile the dust is prevented from being attached to the brush roller.

Description

Technical Field

[0001] The utility model relates to the field of cement processing, in particular to a dust collection device for the head and tail of a cement kiln. Background Technique

[0002] The cement processing process mainly includes four main steps: raw material preparation, raw meal preparation, clinker calcination, and cement grinding. Clinker calcination is to send the raw meal into the cement kiln, where the raw meal undergoes chemical reactions at high temperatures to form cement clinker with a certain mineral composition. After the clinker is cooled, it is taken out of the kiln. Cement kilns mainly include rotary kilns, shaft kilns, etc. During the production process, the head and tail of the kiln are the main parts where dust is generated. The dust contains various harmful substances. If directly discharged into the atmosphere, it will seriously pollute the environment and affect people's health. Therefore, according to environmental protection regulations in various countries, cement enterprises must collect and treat the dust to reduce environmental pollution.

[0003] After retrieval, the Chinese patent publication number is CN215352728U, which discloses a device for collecting dust at the tail of a rotary kiln. By setting an atomizing nozzle, a deflector plate, and a collecting hopper, when treating and purifying the dust at the tail of the kiln, when the dust enters the interior of the atomizing chamber, the dust will combine with the liquid vapor inside the atomizing chamber, thereby realizing the bonding effect between the dust particles. The gravity of the bonded dust spheres is greater than the buoyancy, so they will automatically fall and finally be collected inside the collecting hopper, improving the treatment and collection effect of larger particle dust. By setting a turntable, an L-shaped connecting rod, a connecting sleeve, a filter screen, a fixed protrusion, a moving protrusion, a compression spring, and a return spring, this structure can realize the filtering function of the filter screen while performing self-vibration, and can vibrate and drop the dust on the filter screen, improving the working efficiency of the device and facilitating the collection of the filtered dust.

[0004] However, the dust is atomized before filtration. Therefore, the dust has a certain humidity and will firmly adhere to the filter screen during filtration. It is difficult to shake off the dust only by vibration. Content of the Utility Model

[0005] The purpose of the utility model is to provide a dust collection device for the head and tail of a cement kiln to solve the above problems.

[0006] The utility model realizes the above purpose through the following technical solutions:

[0007] A dust collection device for the head and tail of a cement kiln, comprising a bottom plate. A misting box and a filtering box are fixedly connected to the top of the bottom plate. An exhaust fan is fixedly connected to the top of the filtering box. A connecting pipe is fixedly connected between the misting box and the filtering box. A misting mechanism is arranged in the misting box, and a filtering mechanism is arranged in the filtering box. The filtering mechanism includes a filter plate fixedly connected between the inner walls of the filtering box. A cleaning mechanism is arranged below the filter plate. The cleaning mechanism includes a mounting frame. A brush roller is rotatably connected between the inner walls of the mounting frame. A number of bristles abutting against the filter plate are fixedly connected to the brush roller. A ventilation cavity is formed in the inner wall of the brush roller, and ventilation holes communicating with the ventilation cavity are formed in the outer wall of the brush roller. One end of the brush roller extends out of the mounting frame and is fixedly connected to a gear. A rack is fixedly connected between the inner walls of the filtering box. The gear meshes with the rack. The cleaning mechanism further includes an air supply component and a moving component. The moving component is used to drive the mounting frame to move back and forth.

[0008] Preferably, the air supply component includes a blower fixedly connected to the outer wall of the filtering box. The air outlet of the blower is connected to a corrugated pipe. The other end of the corrugated pipe is fixedly connected to the rear side of the mounting frame. A communication cavity is formed in the wall of the mounting frame to communicate the corrugated pipe with the ventilation cavity inside the brush roller.

[0009] Preferably, the moving component includes a rotary motor fixedly connected to the outer wall of the filtering box. The output end of the rotary motor is connected to a lead screw through a coupling. The lead screw is rotatably connected between the inner walls of the filtering box. A mounting block is threadedly connected to the lead screw. The mounting frame is fixedly connected to the top of the mounting block. One end of the mounting frame is slidably connected to the inner wall of the filtering box.

[0010] Preferably, the misting mechanism includes a water tank fixedly connected to the top of the misting box. A connecting pipe is fixedly connected to the bottom of the water tank. A main flow pipe is fixedly connected to the bottom of the connecting pipe. A number of misting nozzles are fixedly connected to the bottom of the main flow pipe.

[0011] Preferably, the filtering mechanism further includes an activated carbon adsorption layer fixedly connected between the inner walls of the filtering box. The activated carbon adsorption layer is located above the filter plate.

[0012] Preferably, collection boxes are slidably connected to the inner bottom walls of both the misting box and the filtering box. An air inlet pipe is fixedly connected to one side of the misting box. The other end of the air inlet pipe is located at the head and tail of the cement kiln.

[0013] The beneficial effects are as follows: A cleaning mechanism is provided. The cleaning mechanism includes a brush roller. Ventilation holes are formed in the brush roller. While the brush roller cleans the filter plate, air is supplied through the air supply component, and the air blown out through the ventilation holes dries the dust adhering to the filter plate, which is convenient for improving the cleaning effect and at the same time avoiding dust from adhering to the brush roller.

[0014] The additional technical features and their advantages of the present utility model will be more clearly described in the following description content, or can be understood through the specific practice of the present utility model. Description of the Drawings

[0015] The accompanying drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present utility model, but do not constitute a limitation to the present utility model. In the accompanying drawings:

[0016] Figure 1 is a schematic diagram of a dust collection device for the head and tail of a cement kiln according to the present utility model;

[0017] Figure 2 is a front view of the internal structure of a dust collection device for the head and tail of a cement kiln according to the present utility model;

[0018] Figure 3 is a top view of a dust collection device for the head and tail of a cement kiln according to the present utility model;

[0019] Figure 4 is a schematic diagram of the internal structure of a filter box of a dust collection device for the head and tail of a cement kiln according to the present utility model.

[0020] Explanation of the reference numerals in the accompanying drawings is as follows: 1, bottom plate; 2, atomization box; 201, intake pipe; 3, filter box; 301, exhaust fan; 4, connecting pipe; 501, water tank; 502, connecting pipe; 503, main flow pipe; 504, atomizing nozzle; 601, filter plate; 602, activated carbon adsorption layer; 701, rotating motor; 702, lead screw; 703, mounting block; 704, mounting frame; 705, brush roller; 706, gear; 707, rack; 708, blower; 709, corrugated pipe; 8, collection box. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying 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.

[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0023] The following further illustrates the present utility model in conjunction with the accompanying drawings:

[0024] Such as Figures 1 - 4As shown in the figure, a dust collection device for the head and tail of a cement kiln includes a bottom plate 1. A misting box 2 and a filtration box 3 are bolted to the top of the bottom plate 1. A suction fan 301 is bolted to the top of the filtration box 3. A connecting pipe 4 is fixedly connected between the misting box 2 and the filtration box 3. Collection boxes 8 are slidably connected to the inner bottom walls of both the misting box 2 and the filtration box 3. One side of the misting box 2 away from the filtration box 3 is fixedly connected with an air inlet pipe 201, and the other end of the air inlet pipe 201 is located at the head and tail of the cement kiln. When the suction fan 301 is started, the dust at the head and tail of the kiln is sucked into the misting box 2 and the filtration box 3 through the air inlet pipe 201 for treatment.

[0025] A misting mechanism is arranged in the misting box 2. The misting mechanism includes a water tank 501 bolted to the top of the misting box 2. A connecting pipe 502 is fixedly connected to the bottom of the water tank 501. A control valve is arranged in the connecting pipe 502. A main flow pipe 503 is fixedly connected to the bottom of the connecting pipe 502. A number of misting nozzles 504 are fixedly connected to the bottom of the main flow pipe 503. By opening the control valve in the connecting pipe 502, the misting nozzles 504 are used to precipitate the dust entering the misting box 2. Larger dust particles adsorb and bond with each other under the action of the misting steam. After bonding, the gravity is greater than the buoyancy, and they will automatically form a precipitate and fall into the collection box 8 for collection.

[0026] A filtration mechanism is arranged in the filtration box 3. The filtration mechanism includes a filter plate 601 fixedly connected between the inner walls of the filtration box 3. The filtration mechanism also includes an activated carbon adsorption layer 602 fixedly connected between the inner walls of the filtration box 3. The activated carbon adsorption layer 602 is located above the filter plate 601. The smaller dust is filtered by the filter plate 601, and the pungent odor is treated by the activated carbon adsorption layer 602.

[0027] A cleaning mechanism is arranged below the filter plate 601. The cleaning mechanism includes a U-shaped mounting frame 704. A brush roller 705 is rotatably connected between the inner walls of the mounting frame 704. A number of bristles in contact with the filter plate 601 are fixedly connected to the brush roller 705. A ventilation cavity is formed in the inner wall of the brush roller 705. Ventilation holes communicating with the ventilation cavity are formed in the outer wall of the brush roller 705. One end of the brush roller 705 extends out of the mounting frame 704 and is fixedly connected with a gear 706. A rack 707 is fixedly connected between the front and rear inner walls of the filtration box 3. The gear 706 meshes with the rack 707. When the brush roller 705 moves, it will drive the gear 706 to move. The gear 706 starts to drive the brush roller 705 to rotate under the drive of the rack 707, improving the cleaning effect.

[0028] The cleaning mechanism further includes a air supply component. The air supply component includes a blower 708 fixedly connected to the rear side of the filter box 3. The air outlet of the blower 708 is connected with a corrugated pipe 709. The other end of the corrugated pipe 709 is fixedly connected to the rear side of the mounting bracket 704. A communication cavity is formed in the wall of the mounting bracket 704 to connect the corrugated pipe 709 with the ventilation cavity inside the brush roller 705. By supplying air to the ventilation cavity through the air supply component, the air blows out through the ventilation holes to dry the dust adhered to the bottom of the filter plate 601, facilitating cleaning.

[0029] The cleaning mechanism further includes a moving component. The moving component is used to drive the mounting bracket 704 to move back and forth. The moving component includes a rotary motor 701 bolted to the rear side of the filter box 3. The output end of the rotary motor 701 is connected with a lead screw 702 through a coupling. The lead screw 702 is rotatably connected between the inner walls of the filter box 3. A mounting block 703 is threadedly connected to the lead screw 702. The mounting bracket 704 is fixedly connected to the top of the mounting block 703. One end of the mounting bracket 704 is slidably connected to the inner wall of the filter box 3. When the rotary motor 701 is started, the rotary motor 701 drives the lead screw 702 to rotate. The lead screw 702 drives the mounting block 703 to drive the mounting bracket 704 to move, and the mounting bracket 704 drives the brush roller 705 to move.

[0030] Working principle: Install the device at a suitable position at the head and tail of the cement kiln, with the air inlet pipe 201 facing the kiln head or the kiln tail. Start the exhaust fan 301 to draw the dust at the head and tail of the kiln into the atomization box 2 through the air inlet pipe 201. Open the control valve in the connecting pipe 502, and use the atomizing nozzle 504 to precipitate the dust entering the atomization box 2. The dust particles with larger sizes adsorb and bond to each other under the action of the atomizing steam. After bonding, the gravity is greater than the buoyancy, and they will automatically form a precipitate and fall into the collection box 8 for collection. The remaining dust then enters the filter box 3 through the connecting pipe 4 and is further filtered by the filter plate 601 and the activated carbon adsorption layer 602, and then the purified gas is discharged. Start the rotary motor 701. The rotary motor 701 drives the lead screw 702 to rotate. The lead screw 702 drives the mounting block 703 to drive the mounting bracket 704 to move. The mounting bracket 704 drives the brush roller 705 to move. While the brush roller 705 is moving, it will drive the gear 706 to move. The gear 706 starts to drive the brush roller 705 to rotate under the drive of the rack 707 to clean the filter plate 601. During the cleaning, start the blower 708. The air blown out by the blower 708 enters the communication cavity formed inside the mounting bracket 704 through the corrugated pipe 709, then enters the ventilation cavity formed inside the brush roller 705, and finally blows out through the ventilation holes on the brush roller 705. So that while the brush roller 705 cleans the filter plate 601, the air blown out through the ventilation holes is used to dry the dust adhered to the filter plate 601, improving the cleaning effect and at the same time preventing the dust from adhering to the brush roller 705. The cleaned dust falls into the collection box 8 for collection.

[0031] The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A cement kiln head and tail dust collection device, comprising a bottom plate (1), a mist box (2) and a filter box (3) are fixedly connected to the top of the bottom plate (1), an exhaust fan (301) is fixedly connected to the top of the filter box (3), a connecting pipe (4) is fixedly connected between the mist box (2) and the filter box (3), a mist mechanism is arranged in the mist box (2), a filter mechanism is arranged in the filter box (3), the filter mechanism comprises a filter plate (601) fixedly connected between the inner walls of the filter box (3), and is characterized in that: A cleaning mechanism is provided below the filter plate (601), the cleaning mechanism comprising a mounting frame (704), a brush roller (705) being rotatably connected between the inner walls of the mounting frame (704), a plurality of bristles being fixedly connected to the brush roller (705) and being in contact with the filter plate (601), a ventilation cavity being provided on the inner wall of the brush roller (705), a ventilation hole being provided on the outer wall of the brush roller (705) and being communicated with the ventilation cavity, one end of the brush roller (705) extending out of the mounting frame (704) and being fixedly connected to a gear (706), a rack (707) being fixedly connected between the inner walls of the filter box (3), the gear (706) being meshed with the rack (707), the cleaning mechanism further comprising an air supply component and a moving component, the moving component being used for driving the mounting frame (704) to move back and forth.

2. A cement kiln head and kiln tail dust collection device according to claim 1, characterized in that: The air supply assembly comprises a hair dryer (708) fixedly connected to the outer wall of the filter box (3); the air outlet of the hair dryer (708) is connected to a bellows (709); the other end of the bellows (709) is fixedly connected to the rear side of the mounting frame (704); a connecting cavity is provided in the wall of the mounting frame (704) for connecting the bellows (709) with the ventilation cavity inside the brush roller (705).

3. A cement kiln head and kiln tail dust collection device according to claim 1, characterized in that: The moving assembly comprises a rotating motor (701) fixedly connected to the outer wall of the filter box (3); the output end of the rotating motor (701) is connected to a screw rod (702) via a coupling; the screw rod (702) is rotatably connected between the inner walls of the filter box (3); a mounting block (703) is threadedly connected to the screw rod (702); the mounting frame (704) is fixedly connected to the top of the mounting block (703); and one end of the mounting frame (704) is slidably connected to the inner wall of the filter box (3).

4. A cement kiln head and tail dust collection device according to claim 1, characterized in that: The atomizing mechanism comprises a water tank (501) fixedly connected to the top of the atomizing box (2); a connecting pipe (502) is fixedly connected to the bottom of the water tank (501); a main flow pipe (503) is fixedly connected to the bottom of the connecting pipe (502); and a plurality of atomizing nozzles (504) are fixedly connected to the bottom of the main flow pipe (503).

5. The cement kiln head and tail dust collection device according to claim 1 is characterized by: The filtering mechanism further comprises an activated carbon adsorption layer (602) fixedly connected to the inner wall of the filtering box (3), and the activated carbon adsorption layer (602) is located above the filter plate (601).

6. The cement kiln head and kiln tail dust collection device according to claim 1 is characterized by: The inner bottom walls of the atomizing box (2) and the filtering box (3) are both slidably connected to a collecting box (8); one side of the atomizing box (2) is fixedly connected to an air intake pipe (201); the other end of the air intake pipe (201) is located at the head and tail of the cement kiln.

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