Dust raising prevention device for powdery solid materials

Abstract

The utility model belongs to the technical field of flue gas desulfurization, and particularly relates to a dust raising prevention device for powdery solid materials, which is arranged between a feeding scraper blade and a dissolving tank and comprises an upper pipeline, a stirring box and a lower pipeline, the upper pipeline is communicated with the feeding scraper blade and the stirring box, and the lower pipeline is communicated with the stirring box and the dissolving tank. A water pump is arranged between the dissolving tank and the stirring box and communicated with the dissolving tank through a pipeline, a stirring shaft is arranged in the stirring box and provided with a plurality of stirring rods, brushes are arranged at the ends of the stirring rods, bristles of the brushes make contact with the inner wall of the stirring box, and the lower end of the stirring shaft extends out of the stirring box to be fixedly connected with a power device used for driving the stirring shaft to rotate. The stirring box is arranged on the pipeline, liquid in the dissolving tank is conveyed into the stirring box, powdery solid materials and the liquid in the dissolving tank are stirred and mixed to form slurry, and the slurry falls into the dissolving tank, so that the problem of dust raising is effectively avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of flue gas desulfurization, and particularly relates to a dust-proof device for powdery solid materials. Background Art

[0002] In some industrial production processes, some powdery materials are transported to a material dissolution tank through equipment. During the process of entering the dissolution tank, due to the height difference, there will be problems of unorganized emissions such as dust generation; for example, during the production of sodium sulfite by flue gas desulfurization, as Figure 3 shown, sodium carbonate particles in the silo are transported by a feeding scraper, then enter the discharge pipe at the discharge port, and then directly fall on the water surface in the dissolution tank. In order to ensure the full dissolution of sodium carbonate and avoid blockage at the outlet position of the discharge pipe, there is a certain distance between the lower end of the discharge end and the liquid level, which will cause the falling materials to generate dust, affecting the production environment and causing waste. Summary of the Invention

[0003] In order to solve the problem that when existing powdery solid materials are dissolved in a dissolution tank after being transported, in order to ensure the dissolution effect, the materials need to fall above the liquid level, resulting in dust affecting the working environment and being prone to waste, the utility model provides a dust-proof device for powdery solid materials. By arranging a mixing tank on the pipeline and transporting the liquid in the dissolution tank into the mixing tank, the powdery solid materials and the liquid are stirred and mixed to form a slurry and then fall into the dissolution tank, effectively avoiding the dust problem.

[0004] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0005] A dust-proof device for powdery solid materials is arranged between a feeding scraper and a dissolution tank, and comprises an upper pipeline, a mixing tank and a lower pipeline. One end of the upper pipeline is communicated with the discharge port of the feeding scraper, and the other end is communicated with the upper end of the mixing tank. One end of the lower pipeline is communicated with one side of the lower end of the mixing tank, and the other end extends above the liquid level in the dissolution tank. A water pump is arranged on one side of the dissolution tank for transporting the liquid in the dissolution tank into the mixing tank. The water outlet pipeline of the water pump is communicated with one side of the upper end of the mixing tank. The mixing tank is used for mixing the powdery solid materials and water into a slurry. A stirring shaft is rotatably arranged in the mixing tank. A plurality of stirring rods are fixedly arranged on the stirring shaft. Brushes are fixedly arranged at the ends of the stirring rods far away from the stirring shaft. The bristles of the brushes contact the inner wall of the mixing tank. The lower end of the stirring shaft extends out of the mixing tank and is fixedly connected with a power device for driving the stirring shaft to rotate. The stirring shaft drives the stirring rods and the brushes to rotate, realizing the mixing and stirring of the materials in the mixing tank.

[0006] Preferably, a water inlet is provided on one side of the upper end of the mixing tank. The water inlet is communicated with the discharge pipeline of the water pump. A first filter plate is arranged in the water inlet. The first filter plate matches the inner wall of the mixing tank. The brush at the uppermost position corresponds to the first filter plate, and the brush brushes the first filter plate to prevent blockage.

[0007] Preferably, a liquid outlet is provided on one side of the lower end of the mixing tank. The liquid outlet is communicated with the lower pipeline. A second filter plate is arranged in the liquid outlet. The second filter plate matches the inner wall of the mixing tank. The brush at the lowermost position corresponds to the second filter plate, and the brush brushes the second filter plate to prevent its blockage.

[0008] Preferably, a first valve is arranged on the water outlet pipeline of the water pump, and a second valve is arranged on the lower pipeline.

[0009] Preferably, a storage bin is provided at the feeding opening of the feeding scraper, and the feeding scraper is used for conveying the materials in the storage bin.

[0010] Preferably, the power device is a motor.

[0011] Through the above technical solutions, the beneficial effects of the present utility model are as follows:

[0012] 1. By arranging a mixing tank between the upper pipeline and the lower pipeline, and conveying the liquid in the dissolution tank to the mixing tank through the water pump and mixing it with the powdery materials conveyed into the mixing tank by the feeding scraper, and then falling into the dissolution tank through the lower pipeline, the present utility model effectively avoids the problem of dust generation easily caused by the direct falling of powdery solid materials into the dissolution tank.

[0013] 2. The present utility model drives the stirring shaft to drive a plurality of stirring rods and brushes to rotate through the motor, realizes the mixing of the materials in the mixing tank, and at the same time the brushes brush the inner wall of the mixing tank to reduce the residual materials on the inner wall of the mixing tank.

[0014] 3. By arranging a first filter plate at the water inlet of the mixing tank, the present utility model prevents powdery solid materials from entering the water outlet pipeline of the water pump, and by arranging a second filter plate at the liquid outlet of the mixing tank, it prevents the agglomerated materials from directly discharging from the liquid outlet of the mixing tank.

[0015] 4. Through the brushes respectively arranged corresponding to the first filter plate and the second filter plate, during the stirring process, a plurality of brushes rotate and intermittently brush the first filter plate and the second filter plate, preventing the first filter plate and the second filter plate from being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the present utility model.

[0017] Figure 2For the present utility model Figure 1 The enlarged view of part A in

[0018] Figure 3 It is a schematic structural diagram of a device for conveying materials to a dissolution tank in the prior art.

[0019] The reference numerals in the attached drawings are as follows: 1 is a feeding scraper, 2 is a dissolution tank, 3 is an upper pipeline, 4 is a mixing tank, 5 is a lower pipeline, 6 is a water pump, 7 is a stirring shaft, 8 is a stirring rod, 9 is a brush, 10 is a power device, 11 is a first filter plate, 12 is a second filter plate, 13 is a first valve, 14 is a second valve, and 15 is a feed bin. Specific embodiments

[0020] The present utility model will be further described below in conjunction with the attached drawings and specific embodiments:

[0021] As shown in Figures 1 to 2 , this embodiment provides a dust-proof device for powdery solid materials, which is arranged between the feeding scraper 1 and the dissolution tank 2. A feed bin 15 is arranged at the feed inlet of the feeding scraper 1, and powdery sodium carbonate particles are placed in the feed bin 15. The sodium carbonate powder in the feed bin 15 is conveyed to the upper part of the dissolution tank 2 through the feeding scraper 1, including an upper pipeline 3, a mixing tank 4 and a lower pipeline 5. One end of the upper pipeline 3 is communicated with the discharge port of the feeding scraper 1, and the other end is communicated with the upper end of the mixing tank 4. The sodium carbonate conveyed by the feeding scraper 1 falls into the mixing tank 4 through the upper pipeline 3. A water pump 6 is arranged on one side of the dissolution tank 2 for conveying the liquid in the dissolution tank 2 into the mixing tank 4. The water outlet pipeline of the water pump 6 is communicated with one side of the upper end of the mixing tank 4. A first valve 13 is arranged on the water outlet pipeline of the water pump 6 as the water inlet switch of the mixing tank 4. The mixing tank 4 is used for mixing the powdery solid material and water into a slurry, that is, sodium carbonate and water are preliminarily stirred and mixed in the mixing tank 4. One end of the lower pipeline 5 is communicated with one side of the lower end of the mixing tank 4, and the other end extends above the liquid level in the dissolution tank 2. The slurry mixed in the mixing tank 4 falls into the dissolution tank 2 through the lower pipeline 5. A second valve 14 is arranged on the lower pipeline 5 as the discharge switch of the mixing tank 4 to adjust the rate of adding materials into the dissolution tank 2. A stirring shaft 7 is rotatably arranged in the mixing tank 4. The stirring shaft 7 is vertically displaced from the upper pipeline 3. A plurality of stirring rods 8 are fixedly arranged on the stirring shaft 7. A brush 9 is fixedly arranged at the end of the stirring rod 8 far away from the stirring shaft 7. The bristles of the brush 9 contact the inner wall of the mixing tank 4. When the stirring shaft 7 rotates, the stirring rod 8 and the brush 9 rotate synchronously to stir the water and sodium carbonate in the mixing tank 4 to be mixed into a slurry. At the same time, during the rotation of the brush 9, the inner wall of the mixing tank 4 is brushed by the bristles to reduce or even avoid the residue or adhesion of materials on the inner wall of the mixing tank 4. The lower end of the stirring shaft 7 extends out of the mixing tank 4 and is fixedly connected with a power device 10 for driving the stirring shaft 7 to rotate. The power device 10 is a motor.

[0022] One side of the upper end of the mixing tank 4 is provided with a water inlet, which is communicated with the discharge pipeline of the water pump 6. A first filter plate 11 is arranged in the water inlet. The first filter plate 11 is matched with the inner wall of the mixing tank 4. The first filter plate 11 is used to prevent sodium carbonate from entering the water outlet pipeline of the water pump 6. The uppermost brush 9 corresponds to the first filter plate 11. During the mixing process, the uppermost brush 9 moves circumferentially along the inner wall of the mixing tank 4, and then its bristles intermittently brush the first filter plate 11, effectively preventing the first filter plate 11 from being blocked.

[0023] One side of the lower end of the mixing tank 4 is provided with a liquid outlet, which is communicated with the lower pipeline 5. A second filter plate 12 is arranged in the liquid outlet. The second filter plate 12 is used to prevent agglomerated sodium carbonate, etc. from being directly discharged into the dissolution tank 2, ensuring the mixing effect of sodium carbonate in the mixing tank 4. The second filter plate 12 is matched with the inner wall of the mixing tank 4. The lowermost brush 9 corresponds to the second filter plate 12. During the mixing process, the lowermost brush 9 moves circumferentially along the inner wall of the mixing tank 4, and then its bristles intermittently brush the second filter plate 12, effectively preventing the second filter plate 12 from being blocked.

[0024] During use, first open the first valve 13 and the second valve 14, and at the same time start the feeding scraper 1, the water pump 6 and the motor. The feeding scraper 1 conveys the sodium carbonate powder in the storage bin 15 to the upper pipeline 3, and then the sodium carbonate in the upper pipeline 3 falls into the mixing tank 4. At the same time, the water pump 6 conveys the water in the dissolution tank 2 to the mixing tank 4, and the motor drives the mixing shaft 7 to rotate, driving the mixing rod 8 and the brush 9 to rotate, so that the sodium carbonate and water in the mixing tank 4 are preliminarily mixed and then flow into the dissolution tank 2 through the lower pipeline 5 for further dissolution, effectively avoiding the generation of dust. During this process, with the rotation of the multiple brushes 9, while ensuring the mixing effect in the mixing tank 4, the inner wall of the mixing tank 4 and the inner sides of the first filter plate 11 and the second filter plate 12 are brushed. On the one hand, it prevents the inner wall of the mixing tank 4 from adhering to materials, and on the other hand, it prevents the first filter plate 11 and the second filter plate 12 from being blocked.

[0025] The above embodiments are only the preferred embodiments of the present invention, and do not limit the implementation scope of the present invention. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the present invention patent should be included in the scope of the patent application of the present invention.

Claims

1. A device for preventing dust from flying of powdery solid materials, which is arranged between a feeding scraper (1) and a dissolving tank (2), and is characterized in that, It includes an upper pipeline (3), a mixing tank (4) and a lower pipeline (5). One end of the upper pipeline (3) is connected to the discharge port of the feeding scraper (1), and the other end is connected to the upper end of the mixing tank (4). One end of the lower pipeline (5) is connected to one side of the lower end of the mixing tank (4), and the other end extends above the liquid level in the dissolving tank (2). A water pump (6) is arranged on one side of the dissolving tank (2) for transporting the liquid in the dissolving tank (2) into the mixing tank (4). The water outlet pipeline of the water pump (6) is connected to one side of the upper end of the mixing tank (4). The mixing tank (4) is used for mixing powdery solid materials and water into a slurry. A stirring shaft (7) is rotatably arranged in the mixing tank (4). A plurality of stirring rods (8) are fixedly arranged on the stirring shaft (7). A brush (9) is fixedly arranged at the end of the stirring rod (8) far away from the stirring shaft (7). The bristles of the brush (9) contact the inner wall of the mixing tank (4). The lower end of the stirring shaft (7) extends out of the mixing tank (4) and is fixedly connected with a power device (10) for driving the stirring shaft (7) to rotate.

2. The dust-proof device for powdery solid materials according to claim 1, wherein An inlet is provided on one side of the upper end of the mixing tank (4). The inlet is connected to the discharge pipeline of the water pump (6). A first filter plate (11) is arranged in the inlet. The first filter plate (11) matches the inner wall of the mixing tank (4). The uppermost brush (9) corresponds to the first filter plate (11).

3. The dust-proof device for powdery solid materials according to claim 1, characterized in that, An outlet is provided on one side of the lower end of the mixing tank (4). The outlet is connected to the lower pipeline (5). A second filter plate (12) is arranged in the outlet. The second filter plate (12) matches the inner wall of the mixing tank (4). The lowermost brush (9) corresponds to the second filter plate (12).

4. A dust-proof device for powdery solid materials according to claim 1, characterized in that, A first valve (13) is arranged on the water outlet pipeline of the water pump (6). A second valve (14) is arranged on the lower pipeline (5).

5. The anti-dust device for powdery solid materials according to claim 1, characterized in that, A storage bin (15) is arranged at the inlet of the feeding scraper (1).

6. The dust-proof device for powdery solid materials according to claim 1, characterized in that, The power device (10) is a motor.

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