Dust collection device for batching warehouse

Abstract

The utility model discloses a batching warehouse dust collecting device which comprises a dust collector, a dust inlet of the dust collector is connected with a dust collecting pipeline, an air outlet of the dust collector is connected with a fan through an air pipe, an air cannon is arranged on the side wall of the dust collecting pipeline, and an air outlet pipe of the air cannon is communicated with a first air inlet in the side wall of the dust collecting pipeline. An exhaust pipe is coaxially arranged in the dust collecting pipeline, one end of the exhaust pipe is arranged to be an open end for exhausting air, the other end of the exhaust pipe is provided with a sealing plate for sealing, a second air inlet is formed in the side wall of the exhaust pipe, and the first air inlet and the second air inlet are connected and communicated through a connecting pipe; the rear end of the rotating shaft is rotationally connected and supported through a shaft seat arranged on a sealing plate of the exhaust pipe, a driving mechanism used for driving the rotating shaft to rotate is arranged at the rear end of the rotating shaft, a plurality of supporting rods are arranged on the side wall of the rotating shaft in the radial direction, and a scraper is arranged on each supporting rod. Materials adsorbed on the inner wall of the dust collection pipeline can be quickly cleaned, the blockage cleaning effect is good, and the dust collection efficiency of the batching warehouse is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dust collection equipment for cement batching silos, and particularly relates to a dust collection device for a batching silo. Background Art

[0002] Cement is mainly made from limestone, clay, and iron ore powder. It is made into raw materials through crushing, batching, and fine grinding and mixing, and then fed into a cement kiln for calcination at a temperature of about 1450 degrees to form clinker, and then the clinker and gypsum are mixed and ground in proportion. The main raw materials for manufacturing cement by formula are limestone (80% - 90%, by mass fraction, the same below), clay (10% - 15%), and iron ore powder (1% - 2%). In order to control the setting rate), less than 3% of gypsum is also added to the clinker.

[0003] A large amount of dust will inevitably be generated in the cement batching silo. If the staff do not wear appropriate protective masks and inhale excessive dust for a long time, it will seriously affect physical health and cause serious diseases such as pneumoconiosis. However, at present, in some cement production enterprises, in areas with large dust, only industrial fans are used to blow the dust to other places, which only treats the symptoms but not the root cause. Even if there is dust collection equipment, it generally uses conventional structures such as a wind frame and a dust collection bag, and only sucks air from the area where dust is generated. Due to the inevitable horizontal or inclined installation of the dust collection pipeline, a large amount of dust is extremely likely to settle on the inner wall of the dust collection pipeline. After long-term accumulation, it is easy to firmly adsorb on the inner wall of the dust collection pipeline in combination with water vapor in the air, resulting in the blockage of the dust collection pipeline, reducing the dust collection efficiency. At the same time, it affects the quality of cement. Due to the long and narrow dust collection pipeline, it is difficult for operators to enter the dust deposited on the inner wall of the dust collection pipeline each time they open the inspection port, and the cleaning is time-consuming and laborious. Content of the Utility Model

[0004] The utility model provides a dust collection device for a batching silo, which solves the problems that the dust generated by the traditional cement batching silo is easy to adsorb on the inner wall of the dust collection pipeline, easily blocks the dust collection pipeline, affects the dust collection efficiency, the dust cleaning is difficult, and the manual cleaning is time-consuming and laborious.

[0005] The utility model provides a dust collection device for a batching silo, which includes a dust collector. The dust inlet of the dust collector is connected to a dust collection pipeline, the air outlet of the dust collector is connected to a fan through an air duct. An air cannon is arranged on the side wall of the dust collection pipeline, and the air outlet pipe of the air cannon is connected and communicated with a first air inlet on the side wall of the dust collection pipeline. An exhaust pipe is coaxially arranged inside the dust collection pipeline. One end of the exhaust pipe is set as an open end for exhausting air, and the other end is closed with a sealing plate. A second air inlet is arranged on the side wall of the exhaust pipe. The first air inlet and the second air inlet are connected and communicated through a connecting pipe.

[0006] In the above technical solution, further, a rotating shaft is coaxially arranged inside the dust collection pipeline. The front end of the rotating shaft is suspended, and the rear end is rotationally connected and supported through a shaft seat arranged on the sealing plate of the exhaust pipe. A driving mechanism for driving the rotation of the rotating shaft is arranged at the rear end of the rotating shaft. A plurality of support rods are radially arranged on the side wall of the rotating shaft, and a scraper is arranged on each support rod.

[0007] In the above technical solution, further, the rotating shaft is a hollow shaft. A plurality of air flow holes are arranged on the side wall of the hollow shaft, and a gas spray head is arranged in each air flow hole. A gas rotary joint is arranged at the rear end of the rotating shaft. One end of the gas rotary joint is rotationally connected to the rotating shaft, and the other end is fixedly connected to the air supply pipe.

[0008] In the above technical solution, further, the driving mechanism includes a dust-proof housing, a driving motor, a first bevel gear, and a second bevel gear. The driving motor is fixed on the outer wall of the dust collection pipeline. The driving shaft of the driving motor passes through the side wall of the dust collection pipeline and extends radially and is inserted into the dust-proof housing arranged on the sealing plate of the exhaust pipe. The first bevel gear is coaxially fixed on the driving shaft of the driving motor in the dust-proof housing, and the second bevel gear is coaxially fixed on the rotating shaft and can be meshed and driven with the first bevel gear.

[0009] In the above technical solution, further, the exhaust end of the exhaust pipe is in a flared shape.

[0010] In the above technical solution, further, the driving motor is a servo motor.

[0011] From the above technical solutions, the present utility model provides a dust collection device for a batching bin.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. Gas is supplied to the air cannon through an air compressor. The high-speed compressed air released by the air cannon directly impacts the inner wall of the dust collection pipeline, overcoming the static friction of the dust and turning it into floating dust. Then, it is captured and processed by the dust collector through the negative pressure suction provided by the fan. The cleaning efficiency is high, the anti-blocking effect is good, and there is no need for manual entry into the dust collection pipeline for cleaning, saving labor intensity.

[0014] 2. The rotation of the rotating shaft drives the scraper to contact the inner wall of the dust collection pipeline to scrape off the dust on the inner wall of the dust collection pipeline. At the same time, it is convenient to lift the relatively thick dust deposited at the bottom of the dust collection pipeline into the air, and the dust is quickly adsorbed into the dust collector for processing through the negative pressure wind force provided by the fan. The cleaning efficiency is high.

[0015] 3. The rotating shaft drives the gas spray heads to rotate and blow the dust adsorbed on the inner wall of the dust collection pipeline, which can form an air flow turbulence inside the dust collection pipeline to prevent the cleaned dust from being adsorbed on the inner wall of the dust collection pipeline again. Description of the Drawings

[0016] To more clearly illustrate the technical solution of the present utility model, the following will briefly introduce the attached drawings required in the implementation cases. Obviously, for those of ordinary skill in the art, without creative efforts, other attached drawings can also be obtained based on these attached drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of a dust collection device for a batching bin proposed by the present utility model;

[0018] Figure 2 It is a schematic diagram of a partial structure of a dust collection device for a batching bin proposed by the present utility model;

[0019] Figure 3 It is a Figure Ⅰ locally enlarged schematic diagram of the attachment of the present utility model.

[0020] In the figure:

[0021] 1 - Dust collector;

[0022] 2 - Dust collection pipeline; 21 - First air inlet;

[0023] 3 - Fan; 30 - Air cannon; 31 - Air outlet pipe;

[0024] 4 - Exhaust pipe; 41 - Sealing plate; 42 - Second air inlet; 43 - Axle seat; 44 - Connecting pipe;

[0025] 5 - Rotating shaft; 51 - Support rod; 52 - Scraper; 54 - Gas spray head;

[0026] 6 - Driving mechanism; 61 - Dust-proof housing; 62 - Driving motor; 64 - First bevel gear; 65 - Second bevel gear;

[0027] 7 - Gas rotary joint;

[0028] 8 - Gas supply pipe. Specific embodiments

[0029] In order to enable those skilled in the art to better understand the technical solutions in the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the attached drawings.

[0030] Embodiment 1:

[0031] See Figures 1-3, a dust collection device for an ingredient library, including a dust collector 1. The dust inlet of the dust collector 1 is connected to a dust collection pipeline 2, and the air outlet of the dust collector 1 is connected to a fan 3 through an air duct. An air cannon 30 is arranged on the outer side wall of the dust collection pipeline 2. The air outlet pipe 31 of the air cannon 30 is connected and communicated with a first air inlet 21 on the side wall of the dust collection pipeline 2. An exhaust pipe 4 is coaxially arranged inside the dust collection pipeline 2. One end of the exhaust pipe 4 is an open end for exhausting, and the other end is closed by a sealing plate 41. A second air inlet 42 is arranged on the side wall of the exhaust pipe 4. The first air inlet 21 and the second air inlet 42 are connected and communicated through a connecting pipe 44. The dust collector 1, the fan 3, and the air cannon 30 are all commercially available equipment on the market. Among them, the model of the dust collector 1 is the LPM64-4 dust collector, the fan 3 is a 30KW fan, and the processing air volume is 17400m 3 / h. The air cannon 30 is a strong air current of suddenly ejected compressed gas that directly rushes into the dust collection pipeline 2 at a speed exceeding Mach 1 (the speed of sound), suddenly releasing an expansion shock wave, overcoming the static friction of the material, and making the material in the dust collection pipeline 2 flow again. The air cannon 30 is supplied with gas by an air compressor. The air compressor will send compressed air into the air cannon 30 through a pipeline. The high-speed compressed air released by the air cannon 30 can directly impact the inner wall of the dust collection pipeline 2. At this time, the dust adhering to the inner wall of the dust collection pipeline 2 is directly impacted. This suddenly released expansion shock wave overcomes the static friction of the dust and makes it become floating dust, and then it is captured and processed by the dust collector 1 through the negative pressure suction provided by the fan 3. The cleaning efficiency is high, and there is no need for manual entry into the interior of the dust collection pipeline 2 for cleaning, saving the labor intensity.

[0032] In this embodiment, referring to Figure 2 , 3 , a rotating shaft 5 is coaxially arranged inside the dust collection pipeline 2. The front end of the rotating shaft 5 is suspended, and the rear end is rotationally connected and supported through a shaft seat 43 arranged on the sealing plate 41 of the exhaust pipe 4. A shaft hole is arranged on the sealing plate 41. The rear end of the rotating shaft 5 passes through the shaft hole and is sleeved inside the bearing hole of the shaft seat 43 arranged on the side wall of the sealing plate 41. A driving mechanism 6 for driving the rotation of the rotating shaft 5 is arranged at the rear end of the rotating shaft 5. Three support rods 51 are radially arranged on the side wall of the rotating shaft 5. One end of each support rod 51 is fixedly connected to the side wall of the rotating shaft 5, and the other end is fixedly connected to a scraper 52 arranged at the outer end of the support rod 51. The scraper 52 is arranged parallel to the axis of the dust collection pipeline 2 at a position close to the inner wall of the dust collection pipeline 2. The scraper 52 is a long strip plate, and the long side end face of the scraper 52 abuts against the inner wall of the dust collection pipeline 2. During the rotation of the rotating shaft 5, the long side end face of the scraper 52 is driven to abut against the inner wall of the dust collection pipeline 2 to scrape off the dust on the inner wall of the dust collection pipeline 2. At the same time, it is convenient to lift the relatively thick dust deposited at the bottom of the dust collection pipeline 2 into the air, and the dust is quickly adsorbed into the dust collector 1 through the negative pressure wind force provided by the fan 3 for processing.

[0033] In this embodiment, referring to Figure 2 ,3 The rotating shaft 5 is a hollow shaft with closed and sealed ends. A plurality of air flow holes are arranged on the side wall of the hollow shaft. The air flow holes are arranged at intervals along the length direction of the rotating shaft 5 and are evenly distributed along the circumferential direction. A gas nozzle 54 is arranged on each air flow hole. A gas rotary joint 7 is arranged at the rear end of the rotating shaft 5. One end of the gas rotary joint 7 is rotatably connected to the rotating shaft 5. The inner cavity of the gas rotary joint 7 is communicated with the inner cavity of the rotating shaft 5. The other end of the gas rotary joint 7 is fixedly connected to the air supply pipe 8. High-pressure gas is provided by an air pump and transported to the inner cavity of the rotating shaft 5 through the air supply pipe 8 and the gas rotary joint 7. The high-pressure gas is sprayed toward the inner wall of the dust collecting pipe 2 through the gas nozzle 54, which can assist the scraper 52 to speed up the cleaning speed of the dust adsorbed on the inner wall of the dust collecting pipe 2. The gas nozzle 54 is driven by the rotating shaft 5 to rotate and sweep the dust adsorbed on the inner wall of the dust collecting pipe 2, so that airflow turbulence can be formed inside the dust collecting pipe 2 to prevent the cleaned dust from being adsorbed on the inner wall of the dust collecting pipe 2 again.

[0034] In this embodiment, see Figure 2 , 3 The driving mechanism 6 includes a dustproof housing 61, a driving motor 62, a first bevel gear 64, and a second bevel gear 65. The driving motor 62 is a servo motor. The speed and rotation direction of the driving motor 62 are controlled by a driver. The driving motor 62 is fixed to the outer wall of the dust collecting duct. The driving shaft of the driving motor 62 extends radially through the side wall of the dust collecting duct 2 and is inserted into the dustproof housing 61 provided on the sealing plate 41 of the exhaust pipe 4. The first bevel gear 64 is coaxially fixed on the driving shaft of the driving motor 62 in the dustproof housing 61. The second bevel gear 65 is coaxially fixed on the rotating shaft 5 and can be meshed with the first bevel gear 64 for transmission. The driving motor 62 drives the output The output shaft rotates, driving the first bevel gear 64 to rotate coaxially, and the first bevel gear 64 rotates and meshes with the second bevel gear 65 to drive the second bevel gear 65 to rotate. The rotation of the second bevel gear 65 drives the scraper 52 to rotate, and further cleans the dust solidified on the inner wall of the dust collecting pipe 2. On the one hand, it prevents the dust from being adsorbed on the inner wall of the dust collecting pipe 2 to affect the gas flow rate of the dust collecting pipe 2 and the dust collecting efficiency. On the other hand, it can prevent dust materials from different batches from being adsorbed on the dust collecting pipe 2 for a long time and deteriorating, affecting the quality of cement produced subsequently. By timely cleaning the dust generated in the batching warehouse of the same batch, the quality of cement can be effectively prevented from being affected.

[0035] In this embodiment, see Figure 2 , 3, the exhaust end of the exhaust pipe 4 is in a flared shape, and the exhaust port of the exhaust pipe 4 is opposite to the dust collection direction. When the air cannon 30 works, the generated expansion shock wave makes the air flow in the dust collection pipe 2 flow reversely. On the one hand, it can clean the dust on the inner wall of the dust collection pipe 2, and on the other hand, it can make the air in the dust collector 1 flow reversely, which is convenient for cleaning the dust adsorbed on the filter bag of the dust collector 1, and prevents too much dust adsorbed on the filter bag from affecting the dust collection efficiency of the dust collector 1.

[0036] As can be seen from the above technical solutions, during use, an idle LPM64-4 dust collector is installed outside the batching bin, equipped with a 30KW fan, and the processing air volume is 17400m 3 / h. The diameter of the dust collection pipe in the bin is 500mm. The dust generated from the discharging of the two batching scales of each of the 2# and 3# mills is all collected by this dust collector (an air cannon is installed in the main dust collection pipe to periodically blow the settled materials in the dust collection pipe). The batching scales of the 2# and 3# mills are installed in a reversed direction. The air cannon 30 is supplied with gas by an air compressor. The air compressor sends compressed air into the air cannon 30 through a pipeline. The high-speed compressed air released by the air cannon 30 can directly impact and remove the dust adsorbed on the inner wall of the dust collection pipe 2. During the process of the driving mechanism 6 driving the rotating shaft 5 to rotate, the long side end face of the scraper 52 abuts against the inner wall of the dust collection pipe 2 to scrape off the dust on the inner wall of the dust collection pipe 2. At the same time, it is convenient for the relatively thick dust deposited at the bottom of the dust collection pipe 2 to be lifted into the air and quickly adsorbed into the dust collector 1 for treatment by the negative pressure wind force provided by the fan 3. High-pressure gas is provided by an air pump and is transported to the inner cavity of the rotating shaft 5 through the air supply pipe 8 and the gas rotary joint 7. The high-pressure gas is sprayed onto the inner wall of the dust collection pipe 2 through the gas nozzle 54, which can assist the scraper 52 to accelerate the cleaning speed of the dust adsorbed on the inner wall of the dust collection pipe 2. The rotating shaft 5 drives the gas nozzle 54 to rotate and blow the dust adsorbed on the inner wall of the dust collection pipe 2, which can form an air flow turbulence inside the dust collection pipe 2 to prevent the cleaned dust from being adsorbed on the inner wall of the dust collection pipe 2 again.

[0037] After considering the specification and practicing the disclosed utility model herein, those skilled in the art will readily think of other embodiments of the present utility model. The present utility model aims to cover any variations, uses, or adaptations of the present utility model, which follow the general principles of the present utility model and include the common general knowledge or conventional technical means in the technical field not disclosed by the present utility model. The specification and embodiments are only regarded as exemplary, and the true scope of the present utility model is pointed out by the claims.

[0038] It should be understood that the present utility model is not limited to the precise structure already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The above-described embodiments of the present utility model do not constitute a limitation on the protection scope of the present utility model.

Claims

1. A dust collecting device for a batching warehouse, comprising a dust collector (1), wherein a dust inlet of the dust collector (1) is connected to a dust collecting pipeline (2), and an air outlet of the dust collector (1) is connected to a fan (3) via an air duct, characterized in that: An air cannon (30) is arranged on the side wall of the dust collecting duct (2); an air outlet pipe (31) of the air cannon (30) is connected to a first air inlet (21) on the side wall of the dust collecting duct (2); an exhaust pipe (4) is coaxially arranged inside the dust collecting duct (2); one end of the exhaust pipe (4) is arranged as an open end for exhausting air, and the other end is provided with a sealing plate (41) for sealing; a second air inlet (42) is arranged on the side wall of the exhaust pipe (4); the first air inlet (21) and the second air inlet (42) are connected to each other via a connecting pipe (44).

2. A dust collecting device for a batching warehouse according to claim 1, characterized in that: A rotating shaft (5) is coaxially arranged in the dust collecting duct (2), the front end of the rotating shaft (5) is suspended, and the rear end is rotatably connected and supported by a shaft seat (43) arranged on the sealing plate (41) of the exhaust pipe (4), and a driving mechanism (6) for driving the rotating shaft (5) to rotate is arranged at the rear end of the rotating shaft (5), and a plurality of support rods (51) are radially arranged on the side wall of the rotating shaft (5), and a scraper (52) is arranged on each of the support rods (51).

3. A dust collecting device for a batching warehouse according to claim 2, characterized in that: The rotating shaft (5) is a hollow shaft, a plurality of air flow holes are arranged on the side wall of the hollow shaft, each air flow hole is provided with a gas nozzle (54), a gas rotary joint (7) is arranged at the rear end of the rotating shaft (5), one end of the gas rotary joint (7) is rotatably connected to the rotating shaft (5), and the other end is fixedly connected to the gas supply pipe (8).

4. A dust collecting device for a batching warehouse according to claim 2, characterized in that: The driving mechanism (6) comprises a dustproof housing (61), a driving motor (62), a first bevel gear (64), and a second bevel gear (65); the driving motor (62) is fixed on the outer wall of the dust collecting duct; the driving shaft of the driving motor (62) passes through the side wall of the dust collecting duct (2) and extends radially and is inserted into the dustproof housing (61) provided on the sealing plate (41) of the exhaust pipe (4); the first bevel gear (64) is coaxially fixed on the driving shaft of the driving motor (62) in the dustproof housing (61); the second bevel gear (65) is coaxially fixed on the rotating shaft (5) and can mesh with the first bevel gear (64) for transmission.

5. The dust collecting device for a batching warehouse according to claim 1, characterized in that: The exhaust end of the exhaust pipe (4) is in a bell-mouth shape.

6. A dust collecting device for a batching warehouse according to claim 4, characterized in that: The driving motor (62) is a servo motor.

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