Tail gas treatment device for a pneumatic conveying system

Abstract

This utility model specifically relates to a tail gas treatment device for a pneumatic conveying system, including a receiving tank. The top of the receiving tank is connected to an inlet pipe and an outlet pipe. The outlet pipe is connected to the tail gas treatment device. The tail gas treatment device includes a water bath. One side of the water bath is a box, and the top of the other side is an open structure. The bottom of the side plate inside the box is spaced apart from the bottom plate of the water bath. An exhaust pipe is installed on the top of the box. The outlet pipe is connected to the outside of the box. A guide section is provided inside the box and located inside the outlet pipe. A sewage pipe is connected to the bottom of the water bath. The sewage pipe is connected to a water pool. A partition plate is fixedly connected inside the water pool. The partition plate divides the water pool into a filtration pool and a circulating water pool. A circulating water pump is placed in the circulating water pool. The outlet of the circulating water pump is connected to a drain pipe. The drain pipe is connected to the water bath and a water supply pipe is connected to the drain pipe.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic conveying equipment, and specifically to a tail gas treatment device for a pneumatic conveying system. Background Technology

[0002] Pneumatic conveying, also known as airflow conveying, utilizes the energy of airflow to transport granular materials along the airflow direction within a closed pipeline; it is a specific application of fluidization technology. In pneumatic conveying systems, after the compressed air carrying the material completes the conveying process, it generates exhaust gas containing dust. Direct emission of this exhaust gas not only wastes material but also pollutes the environment. Therefore, exhaust gas treatment is necessary. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a tail gas treatment device for a pneumatic conveying system.

[0004] The technical solution of this utility model is implemented as follows: A tail gas treatment device for a pneumatic conveying system includes a receiving tank. The top of the receiving tank is connected to an inlet pipe and an outlet pipe. The outlet pipe is connected to the tail gas treatment device. The tail gas treatment device includes a water bath. One side of the water bath is a box, and the top of the other side is an open structure. The bottom of the side plate inside the box is spaced apart from the bottom plate of the water bath. An exhaust pipe is installed on the top of the box. The outlet pipe is connected to the outside of the box. A guide section is provided inside the box and located inside the outlet pipe. A sewage pipe is connected to the bottom of the water bath. The sewage pipe is connected to a water pool. A partition plate is fixedly connected inside the water pool. The partition plate divides the water pool into a filtration pool and a circulating water pool. A circulating water pump is placed in the circulating water pool. The outlet of the circulating water pump is connected to a drain pipe. The drain pipe is connected to the water bath. A water supply pipe is connected to the drain pipe.

[0005] The bottom of the water bath is sloped.

[0006] An overflow pipe is installed on the side of the water bath, and an overflow valve is installed on the overflow pipe.

[0007] The bottom of the filtration tank is covered with a layer of pebbles. A third partition is installed on top of the pebble layer and on the side of the second partition. The top of the pebble layer is a layer of coarse sand, and the top of the coarse sand layer is a layer of coal slag.

[0008] Partition 2 and partition 3 are set at intervals. The highest point of partition 2 is lower than the highest point of the pool, while the highest point of partition 3 is level with the highest point of the pool.

[0009] A baffle plate is installed at the top of the exhaust pipe, and the baffle plate is located above the air outlet pipe.

[0010] The flow guide includes an L-shaped flow guide plate 1. The horizontal part of the L-shaped flow guide plate 1 is fixedly connected to the inner wall of the box. The horizontal part of the L-shaped flow guide plate 1 is located above the air outlet pipe. The side of the vertical part of the L-shaped flow guide plate 1 is connected to an L-shaped flow guide plate 2. A hook-type flow guide plate 3 is provided above the L-shaped flow guide plate 2.

[0011] The beneficial effects of this utility model are as follows: This utility model treats the exhaust gas of pneumatic conveying. The exhaust gas containing dust enters the water bath and comes into contact with water. The purified gas is discharged from the exhaust pipe. The dust settles at the bottom of the water bath. The wastewater is discharged into the filter tank through the sewage pipe. After filtration, the wastewater enters the circulating water tank, and the water in the circulating water tank can be recycled. The guide section guides the flow of the dust-containing gas. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Attached reference numerals: 1. Receiving tank; 2. Feed pipe; 3. Vent pipe; 4. Water bath; 5. Box body; 6. Suction pipe; 7. Exhaust pipe; 8. Sewage pipe; 9. Water tank; 10. Partition two; 11. Filter tank; 12. Circulating water tank; 13. Circulating water pump; 14. Shooting pipe; 15. Water supply pipe; 16. Overflow pipe; 18. Pebble layer; 19. Partition three; 20. Coarse sand layer; 21. Coal slag layer; 22. Water baffle; 23. Guide plate one; 24. Guide plate two; 25. Guide plate three. Detailed Implementation

[0014] like Figure 1 As shown, a tail gas treatment device for a pneumatic conveying system includes a receiving tank 1. The top of the receiving tank 1 is connected to an inlet pipe 2 and an outlet pipe 3. The outlet pipe 3 is connected to the tail gas treatment device, which includes a water bath 4. One side of the water bath 4 is a box 5, and the top of the other side is an open structure. The bottom of the inner side plate of the box 5 is spaced apart from the bottom plate of the water bath 4. An exhaust pipe 7 is installed on the top of the box 5, and a fan is connected to the bottom of the exhaust pipe 7. The fan is installed on the top of the box 5. The air pipe 3 is connected to the outside of the box 5. The box 5 is provided with a guide section inside the air pipe 3. The side of the water bath 4 is connected to the sewage pipe 8. The sewage pipe 8 is connected to the water pool 9. The water pool 9 is fixedly connected to the partition plate 10. The partition plate 10 divides the water pool into a filter pool 11 and a circulating water pool 12. The circulating water pool 12 is equipped with a circulating water pump 13. The outlet of the circulating water pump 13 is connected to the drain pipe 14. The drain pipe 14 is connected to the water bath 4. The drain pipe 14 is connected to the water supply pipe 15.

[0015] Specifically, water is added to the water bath 4, and the material enters the receiving tank 1 through the feed pipe 2. Due to its own gravity, the material falls into the receiving tank 1, while the gas rises and enters the box 5 through the exhaust pipe 3. The dust-containing gas comes out from the exhaust pipe 3 and enters the box 5. After passing through the guide section, the dust-containing gas enters the water, where it is purified. The purified gas moves upward and exits through the exhaust pipe 7. The dust will be at the bottom of the water bath 4. The sewage pipe 8 will discharge the dust-containing wastewater into the filter tank 11. The filter tank 11 filters the dust, allowing clean water to flow into the circulating water tank 12. The circulating water pump 13 is connected to the power supply. The circulating water pump 13 pumps the water in the circulating water tank 12 to the drain pipe 14 and then to the water bath 4, realizing the recycling of water.

[0016] The bottom of the water bath 4 is set with a slope; the slope can make the dust and materials fall to the lower side.

[0017] An overflow pipe 16 is provided on the side of the water bath 4, and an overflow valve is installed on the overflow pipe 16. Specifically, the outlet of the overflow pipe 16 corresponds to the filter tank 11. When there is too much water in the water bath 4, it will overflow into the filter tank 11.

[0018] The bottom of the filter tank 11 is covered with a pebble layer 18. A third baffle 19 is installed on top of the pebble layer 18 and on the side of the second baffle 10. The top of the pebble layer 18 is a coarse sand layer 20, and the top of the coarse sand layer 20 is a coal slag layer 21. The second baffle 10 and the third baffle 19 are spaced apart. The highest point of the second baffle 10 is lower than the highest point of the third baffle 19. The highest point of the third baffle 19 is level with the highest point of the water tank 9. Specifically, the pebble layer 18 has the largest particle size, and the coal slag layer has the smallest particle size. The wastewater in the filter tank 11 flows from top to bottom, passing through the coal slag layer 21, the coarse sand layer 20, and the pebble layer 18 in sequence. After filtration, the water overflows from the bottom pebble layer 18 and flows from the top of the second baffle 10 into the circulating water tank 12. If it becomes clogged, it needs to be replaced regularly.

[0019] A baffle plate 22 is installed on the upper part of the gas outlet pipe 3. Specifically, the purified gas contains moisture. When it hits the baffle plate, the water will fall off due to gravity, and the gas will be discharged.

[0020] The flow guiding section includes an L-shaped flow guide plate 23. The horizontal part of the L-shaped flow guide plate 23 is fixedly connected to the inner wall of the housing 5. The horizontal part of the L-shaped flow guide plate 23 is located above the air outlet pipe 3. The side of the vertical part of the L-shaped flow guide plate 23 is connected to an L-shaped flow guide plate 24. A hook-type flow guide plate 25 is provided above the L-shaped flow guide plate 24. Specifically, the bottom of the flow guide plate 24 extends into the water surface, as shown in the figure. The powder-containing gas can flow according to the distribution of the flow guide plate 1, the flow guide plate 24 and the flow guide plate 25, so that the powder-containing gas can come into contact with the water. The horizontal part of the flow guide plate 24 is provided with a through hole for the gas to pass through.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A tail gas treatment device of a pneumatic conveying system, comprising a receiving tank, a feeding pipe and an air outlet pipe are connected to the top of the receiving tank respectively, characterized in that: The exhaust pipe is connected to the exhaust gas treatment device, which includes a water bath. One side of the water bath is a box, and the top of the other side is an open structure. The bottom of the side plate inside the box is spaced apart from the bottom plate of the water bath. An exhaust pipe is installed on the top of the box. The exhaust pipe is connected to the outside of the box. A guide section is provided inside the box and on the inside of the exhaust pipe. A sewage pipe is connected to the bottom of the water bath. The sewage pipe is connected to a water tank. A partition plate is fixedly connected inside the water tank. The partition plate divides the water tank into a filtration tank and a circulating water tank. A circulating water pump is placed in the circulating water tank. The outlet of the circulating water pump is connected to a drain pipe. The drain pipe is connected to the water bath. A water supply pipe is connected to the drain pipe.

2. A tail gas treatment apparatus for a pneumatic conveying system according to claim 1, characterized in that: The bottom of the water bath is sloped.

3. A tail gas treatment apparatus of a pneumatic conveying system according to claim 1, characterized in that: An overflow pipe is installed on the side of the water bath, and an overflow valve is installed on the overflow pipe.

4. A tail gas treatment apparatus of a pneumatic conveying system according to claim 1, characterized in that: The bottom of the filter tank is covered with a layer of pebbles. A third partition is installed on top of the pebble layer and on the side of the second partition. The top of the pebble layer is a layer of coarse sand, and the top of the coarse sand layer is a layer of coal slag.

5. The exhaust gas treatment device for a pneumatic conveying system according to claim 3, characterized in that: Partition 2 and partition 3 are set at intervals. The highest point of partition 2 is lower than the highest point of partition 3, and the highest point of partition 3 is level with the highest point of the pool.

6. A tail gas treatment apparatus of a pneumatic conveying system according to claim 3, characterized in that: A baffle plate is installed at the top of the exhaust pipe, and the baffle plate is located above the air outlet pipe.

7. A tail gas treatment apparatus of a pneumatic conveying system according to claim 3, characterized in that: The flow guide includes an L-shaped flow guide plate 1. The horizontal part of the L-shaped flow guide plate 1 is fixedly connected to the inner wall of the box. The horizontal part of the L-shaped flow guide plate 1 is located above the air outlet pipe. An L-shaped flow guide plate 2 is connected to the side of the vertical part of the L-shaped flow guide plate 1. A hook-type flow guide plate 3 is provided above the L-shaped flow guide plate 2.

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