Dust removal device for compound fertilizer production

Abstract

The present invention relates to the field of fertilizer production technology, in particular to a dust removal device for compound fertilizer production; the device comprises a dust removal box, an air suction unit, a dust removal grid and a spray unit, the dust removal box is provided with a dust removal chamber inside, the surface of the dust removal box is provided with an air inlet and an air outlet connected with the dust removal chamber, the air suction unit is installed at the air inlet, and the air suction unit can suck the gas in the compound fertilizer production plant from the air inlet into the dust removal chamber through suction, and the gas is discharged from the air outlet after passing through the dust removal chamber, the dust removal grid is fixed to the inner wall of the dust removal chamber and is located between the air inlet and the air outlet, the gas in the dust removal chamber can fully contact with the dust removal grid, the spray unit can spray the dust removal grid to make water adhere to the dust removal grid, and then the gas in the dust removal chamber can fully contact with the water through the dust removal grid, thereby achieving full purification of the gas.

Description

Technical Field

[0001] The invention relates to the technical field of fertilizer production, in particular to a dust removal device for compound fertilizer production. Background Art

[0002] Compound fertilizer provides the nutrients necessary for the growth of more than one type of plants. Compound fertilizers must be powdered and coated before packaging. The powdering and coating process will generate a large amount of dust in the air. The dust is mostly composed of tiny fertilizer particles. In order to prevent the harm of dust to the human body, the exhaust gas generated during the production process needs to be removed.

[0003] For example, an existing patent with publication number CN206823427U discloses a fertilizer exhaust dust removal device. The dust removal device is equipped with a water tank, a first fixed plate, a first blade, a second blade and a filter layer. The exhaust gas in the exhaust gas collection pipe is pumped into the water tank by an air pump. The flowing air drives the first blade to rotate and then drives the second blade to rotate. The bubbles are broken by the rotation of the first blade and the second blade, thereby increasing the contact area between the exhaust gas and the water body in the water tank, thereby improving the dust removal effect of the water body.

[0004] However, it is still difficult to achieve sufficient contact between the exhaust gas and the water body only through the stirring effect of the first blade and the second blade on the water body, resulting in that it is still difficult to achieve sufficient dust removal of the exhaust gas through the existing dust removal device. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies and propose a dust removal device for compound fertilizer production to solve the technical problems in the prior art that fertilizer dust removal devices are difficult to achieve sufficient contact between gas and water and difficult to fully remove dust from exhaust gas.

[0006] In order to achieve the above technical objectives, the technical solution of the present invention provides a dust removal device for compound fertilizer production, comprising:

[0007] A dust removal box, wherein a dust removal cavity is provided inside the dust removal box, and an air inlet and an air outlet communicating with the dust removal cavity are provided on the surface of the dust removal box;

[0008] An air suction unit, the air suction unit being installed at the air inlet and being used to suck the gas into the dust removal chamber;

[0009] A dust removal grid frame, the dust removal grid frame being fixed to the inner wall of the dust removal chamber and being located between the air inlet and the air outlet;

[0010] A spray unit is used to spray the dust removal grid.

[0011] Optionally, the dust removal grid includes a plurality of folding plates arranged at intervals.

[0012] Optionally, there are two dust removal racks, and the two dust removal racks are spaced apart from each other in the direction from the air inlet toward the air outlet. The spray unit includes a pumping module and a spraying module. A water collecting trough is provided at the bottom of the spray chamber. The pumping module is installed in the water collecting trough and is used to pump water through the water collecting trough. The spraying module is connected to the pumping module and is located between the two dust removal racks for spraying the two dust collecting racks.

[0013] Optionally, the water pumping module includes a water pump, a main water pipe, a pressure regulating pipe and a regulating valve. The water pump is installed in the water collection tank, the main water pipe is connected to the water pump, one end of the pressure regulating pipe is connected to the main water pipe, and the other end of the pressure regulating pipe extends to the water collection tank. The regulating valve is installed on the pressure regulating pipe for adjusting the opening of the pressure regulating pipe, and the spray module is connected to the main water pipe.

[0014] Optionally, the dust removal device further includes a water curtain frame, which is fixed to the dust removal box and located on one side of the air outlet. The spray unit is also used to supply water to the water curtain frame to form a water curtain at the air outlet.

[0015] Optionally, the water curtain frame includes a water holding frame and a guide plate, the water holding frame is fixed to the dust removal box and is located on one side of the air outlet, the guide plate is fixed to the side of the water holding frame away from the dust removal chamber and extends toward the air inlet, a first water holding tank is formed between the guide plate and the water holding frame, the spray unit is also connected to the first water holding tank to supply water to the first water holding tank, and the guide plate is used to divert water overflowing from the first water holding tank to form a water curtain at the air outlet.

[0016] Optionally, a water guide plate is provided on one side of the water collecting trough close to the guide plate, and the water guide plate is opposite to the end of the guide plate close to the water collecting trough, and is used to guide water flowing out of the guide plate to the water collecting trough.

[0017] Optionally, the guide frame also includes a water collecting plate, which is fixed to the end of the guide plate close to the side of the dust removal chamber, and a second water trough is formed between the water collecting plate and the guide plate, and the water collecting plate is used to guide the water overflowing from the second water trough to the end of the guide plate.

[0018] Optionally, the guide plate is a curved plate.

[0019] Optionally, a mounting groove is provided on the top of the dust removal box, and the mounting groove extends along the length direction of the dust removal box. A plurality of air inlets are provided, and each of the air inlets is spaced apart on the bottom wall of the mounting groove. The air suction unit includes a plurality of exhaust fans, and each of the exhaust fans is respectively installed at each of the air inlets.

[0020] Compared with the prior art, the dust removal device for compound fertilizer production provided by the present invention has the following beneficial effects: by arranging a dust removal box, an air suction unit, a dust removal grid and a spray unit, a dust removal chamber is arranged inside the dust removal box, an air inlet and an air outlet connected to the dust removal chamber are arranged on the surface of the dust removal box, the air suction unit is installed at the air inlet, and the air suction unit can suck the gas in the compound fertilizer production plant from the air inlet into the dust removal chamber through suction, and the gas is discharged from the air outlet after passing through the dust removal chamber, the dust removal grid is fixed to the inner wall of the dust removal chamber and is located between the air inlet and the air outlet, the gas in the dust removal chamber can fully contact with the dust removal grid, the spray unit can spray the dust removal grid to make the water body adhere to the dust removal grid, and then the gas in the dust removal chamber can fully contact with the water body through the dust removal grid, thereby achieving full purification of the gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of a dust removal device for compound fertilizer production provided in an embodiment of the present invention.

[0022] Figure 2 This is a structural schematic diagram of a hidden water curtain frame in a dust removal device for compound fertilizer production provided by an embodiment of the present invention.

[0023] Figure 3 A schematic structural diagram of a water curtain frame of a dust removal device for compound fertilizer production provided in an embodiment of the present invention.

[0024] Among them, the reference numerals in the figures are:

[0025] 10—Dust removal box 11—Dust removal chamber 12—Air inlet

[0026] 13—air outlet 14—water collection tank 15—installation slot

[0027] 20 - Suction unit 21 - Exhaust fan 30 - Dust removal rack

[0028] 31-folding plate 40-spraying unit 41-pumping module

[0029] 42—Spray module 43—Water pipe 50—Water curtain frame

[0030] 51 - water storage rack 52 - guide plate 53 - first water storage tank

[0031] 54 - water collecting plate 55 - second water tank 141 - water diversion plate

[0032] 411 - Water pump 412 - Main water pipe 413 - Pressure regulating pipe

[0033] 414—regulating valve 421—spray pipe 422—spray head. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0035] The present invention provides a dust removal device for compound fertilizer production, including a dust removal box 10, an air suction unit 20, a dust removal grid 30 and a spray unit 40. The dust removal box 10 is provided with a dust removal chamber 11 inside, and the surface of the dust removal box 10 is provided with an air inlet 12 and an air outlet 13 connected to the dust removal chamber 11; the air suction unit 20 is installed at the air inlet 12, and is used to suck gas into the dust removal chamber 11; the dust removal grid 30 is fixed to the inner wall of the dust removal chamber 11 and is located between the air inlet 12 and the air outlet 13; the spray unit 40 is used to spray the dust removal grid 30.

[0036] Specifically, the dust removal device of this embodiment is mainly used to purify and recycle the dust generated during the powder spraying and coating process of compound fertilizer. When it is used in other dust removal situations, its principle should be the same as the dust removal principle applied to compound fertilizer production. The dust removal device is provided with a dust removal box 10, an air suction unit 20, a dust removal grid 30 and a spray unit 40. The dust removal chamber 11 is installed in the factory building. The dust removal box 10 is provided with a dust removal chamber 11 inside. The surface of the dust removal box 10 is provided with an air inlet 12 and an air outlet 13 connected to the dust removal chamber 11. The air suction unit 20 is installed at the air inlet 12. The air suction unit 20 can suck the gas in the compound fertilizer production plant from the air inlet 12 into the dust removal chamber 11 by suction. After passing through the dust removal chamber 11, the water is discharged from the air outlet 13. The dust removal grid 30 is fixed to the inner wall of the dust removal chamber 11 and is located between the air inlet 12 and the air outlet 13. The gas in the dust removal chamber 11 can fully contact with the dust removal grid 30. The spray unit 40 can spray the dust removal grid 30 to make the water adhere to the dust removal grid 30, so that the gas in the dust removal chamber 11 can fully contact with the water through the dust removal grid 30, thereby achieving full purification of the gas.

[0037] In this embodiment, to improve suction efficiency and facilitate gas diffusion, a mounting slot 15 is provided on the top of the dust removal box 10. The mounting slot 15 extends along the length of the dust removal box 10. A plurality of air inlets 12 are provided, each of which is spaced apart on the bottom wall of the mounting slot 15. The air suction unit 20 includes a plurality of exhaust fans 21, each of which is mounted on each of the air inlets 12. Specifically, by spaced apart the air inlets 12 on the bottom wall of the mounting slot 15, the diffusion of gas into the dust removal chamber 11 can be facilitated, thereby accelerating the purification efficiency of the gas. Moreover, the exhaust fans 21 are provided in the mounting slot 15 to protect the operator.

[0038] In this embodiment, the dust removal grid 30 includes a plurality of spaced-apart folding plates 31. Specifically, the dust removal grid 30, by providing the plurality of spaced-apart folding plates 31, can effectively increase the contact area between the water body and the dust removal grid 30. A folded cavity can be formed between adjacent folding plates 31. While not hindering the flow of gas, the folded cavity can also effectively increase the contact area between the gas and the dust removal grid 30, thereby improving the dust removal effect on the gas.

[0039] In this embodiment, there are two dust removal racks 30, and the two dust removal racks 30 are spaced apart from each other in the direction from the air inlet 12 toward the air outlet 13. The spray unit 40 includes a pumping module 41 and a spraying module 42. A water collecting trough 14 is provided at the bottom of the spray chamber. The pumping module 41 is installed in the water collecting trough 14 and is used to pump water through the water collecting trough 14. The spraying module 42 is connected to the pumping module 41 and is located between the two dust removal racks 30 for spraying the two dust collecting racks.

[0040] Specifically, the pumping module 41 pumps water from the water collection tank 14, and the water is sprayed to the two dust removal racks 30 through the spray module 42, thereby achieving full contact between the gas and the water. Since the spray module 42 is located between the two dust removal racks 30, it is only necessary to spray the two dust removal racks 30 at the same time by spraying the spray module 42 toward the upper and lower sides, and the dust removal rack 30 close to the exhaust fan 21 can block the water sprayed by the spray module 42 to prevent water vapor from directly entering the exhaust fan 21 and causing pollution to the exhaust fan 21. The water collection tank 14 is arranged at the bottom of the spray chamber, so that the water falling from the dust removal rack 30 can flow back to the water collection tank 14 to achieve water recycling.

[0041] In this embodiment, a drain outlet is further provided on the surface of the dust removal box 10, which is connected to the water collecting tank 14. After the water in the water collecting tank 14 absorbs a certain amount of dust, the water in the water collecting tank 14 can be discharged through the drain outlet. Since the discharged water contains usable compound fertilizer particles, the discharged water can be recycled.

[0042] In this embodiment, further, the water pumping module 41 includes a water pump 411, a main water pipe 412, a pressure regulating pipe 413 and a regulating valve 414. The water pump 411 is installed in the water collection tank 14, the main water pipe 412 is connected to the water pump 411, one end of the pressure regulating pipe 413 is connected to the main water pipe 412, and the other end of the pressure regulating pipe 413 extends to the water collection tank 14. The regulating valve 414 is installed on the pressure regulating pipe 413 for adjusting the opening of the pressure regulating pipe 413, and the spray module 42 is connected to the main water pipe 412. Specifically, when the water pump 411 is started, water can be pumped through the water collection tank 14. After the water enters the main water pipe 412, it passes into the spray module 42 and is finally sprayed out from the spray module 42. Since the water pumping module 41 is also provided with a pressure regulating pipe 413 and a regulating valve 414 installed on the pressure regulating pipe 413, a part of the water entering the main water pipe 412 will flow back to the water collection tank 14 through the pressure regulating pipe 413. The regulating valve 414 controls the water flow rate flowing back to the water collection tank 14 through the pressure regulating pipe 413 by adjusting the opening of the pressure regulating pipe 413, thereby controlling the water flow rate entering the spray module 42.

[0043] In this embodiment, further, the spray module 42 includes a spray pipe 421 and a spray head 422. The spray pipe 421 is connected to the main water pipe 412 and is located between the two dust removal racks 30. The spray head 422 is installed on the spray pipe 421 for spraying the two dust removal racks 30.

[0044] In this embodiment, the dust removal device further includes a water curtain frame 50, which is fixed to the dust removal box 10 and located on one side of the air outlet 13. The spray unit 40 is also used to supply water to the water curtain frame 50, so that a water curtain is formed at the air outlet 13. Specifically, the spray unit 40 supplies water to the water curtain frame 50, so that the water curtain frame 50 forms a water curtain at the air outlet 13 under the guidance of the water body. Therefore, before the gas in the dust removal chamber 11 is discharged from the air outlet 13, it can be further dusted by passing through the water curtain formed at the air outlet 13, thereby further filtering the gas.

[0045] It can be understood that the spray unit 40 can directly spray water evenly onto the surface of the water curtain frame 50, and form a water curtain through the diversion effect of the water curtain frame 50.

[0046] In this embodiment, further, the water curtain frame 50 includes a water holding frame 51 and a guide plate 52, the water holding frame 51 is fixed to the dust removal box 10 and is located on one side of the air outlet 13, the guide plate 52 is fixed to the side of the water holding frame 51 away from the dust removal chamber 11 and extends toward the air inlet 12, a first water holding tank 53 is formed between the guide plate 52 and the water holding frame 51, the spray unit 40 is also connected to the first water holding tank 53 to supply water to the first water holding tank 53, and the guide plate 52 is used to divert the water overflowing from the first water holding tank 53 to form a water curtain at the air outlet 13. Specifically, the spray unit 40 can directly pass the water in the water collecting tank 14 into the first water tank 53. When the water in the first water tank 53 is full, it will overflow to the guide plate 52, thereby achieving uniform distribution of water in the length direction of the guide plate 52, and finally forming a continuous and uniform water curtain under the guiding action of the guide plate 52, thereby achieving effective dust removal of the gas discharged from the air outlet 13.

[0047] In this embodiment, the spray unit 40 further includes a water pipe 43 , one end of the water pipe 43 is connected to the main water pipe 412 , and the other end of the water pipe 43 extends to the first water tank 53 .

[0048] In this embodiment, a water guide plate 141 is further provided on one side of the water collection trough 14 near the guide plate 52. The water guide plate 141 is opposite to the end of the guide plate 52 near the water collection trough 14 and is used to guide water flowing out of the guide plate 52 to the water collection trough 14. Specifically, through the diversion function of the water guide plate 141, the water diverted from the guide plate 52 can still directly enter the water collection trough 14 for reuse.

[0049] In this embodiment, the guide frame further includes a water collecting plate 54, which is fixed to the end of the guide plate 52 near the side of the dust removal chamber 11. A second water trough 55 is formed between the water collecting plate 54 and the guide plate 5. The water collecting plate 54 is used to guide the water overflowing from the second water trough 55 to the end of the guide plate 52. Specifically, the water vapor sprayed into the dust removal chamber 11 by the spray unit 40 will partially adhere to the inner side wall of the guide plate 52. This part of the water will flow into the second water trough 55 under the guiding effect of the guide plate 52. When the second water trough 55 is full, the water will overflow to the end of the guide plate 52 through the water collecting plate 54, forming a merger with the water overflowing from the first water trough 53, thereby increasing the water volume of the water curtain.

[0050] In this embodiment, the guide plate 52 is a curved plate. Specifically, the curved plate can achieve uniform diffusion of water on the curved plate, thereby forming a stable water curtain at the air outlet 13.

[0051] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A dust removal device for compound fertilizer production, characterized in that: include: A dust removal box, wherein a dust removal cavity is provided inside the dust removal box, and an air inlet and an air outlet communicating with the dust removal cavity are provided on the surface of the dust removal box; An air suction unit, the air suction unit being installed at the air inlet and being used to suck the gas into the dust removal chamber; A dust removal grid frame, the dust removal grid frame being fixed to the inner wall of the dust removal chamber and being located between the air inlet and the air outlet; A spray unit, the spray unit being used to spray the dust removal grid; a water curtain frame, the water curtain frame being fixed to the dust removal box and being located on one side of the air outlet, the spray unit being further used to supply water to the water curtain frame so as to form a water curtain at the air outlet; The water curtain frame includes a water holding frame, a guide plate and a water collecting plate. The water holding frame is fixed to the dust removal box and is located on one side of the air outlet. The guide plate is an arc-shaped plate. The guide plate is fixed to the side of the water holding frame away from the dust removal chamber and extends toward the air inlet. A first water holding trough is formed between the guide plate and the water holding frame. The spray unit is also connected to the first water holding trough to supply water to the first water holding trough. The guide plate is used to divert water overflowing from the first water holding trough to form a water curtain at the air outlet; the water collecting plate is fixed to the end of the guide plate close to the side of the dust removal chamber. A second water holding trough is formed between the water collecting plate and the guide plate. The water collecting plate is used to divert water overflowing from the second water holding trough to the end of the guide plate.

2. The dust removal device for compound fertilizer production according to claim 1, characterized in that: The dust removal grid comprises a plurality of folding plates arranged at intervals.

3. The dust removal device for compound fertilizer production according to claim 1, characterized in that: There are two dust removal racks, and the two dust removal racks are spaced apart from each other in the direction from the air inlet toward the air outlet. The spray unit includes a pumping module and a spraying module. A water collecting trough is provided at the bottom of the dust removal chamber. The pumping module is installed in the water collecting trough and is used to pump water through the water collecting trough. The spraying module is connected to the pumping module and is located between the two dust removal racks, and is used to spray the two dust removal racks.

4. The dust removal device for compound fertilizer production according to claim 3, characterized in that: The water pumping module includes a water pump, a main water pipe, a pressure regulating pipe and a regulating valve. The water pump is installed in the water collection tank. The main water pipe is connected to the water pump. One end of the pressure regulating pipe is connected to the main water pipe, and the other end of the pressure regulating pipe extends to the water collection tank. The regulating valve is installed on the pressure regulating pipe for adjusting the opening of the pressure regulating pipe. The spray module is connected to the main water pipe.

5. The dust removal device for compound fertilizer production according to claim 3, characterized in that: A water guide plate is provided on one side of the water collecting trough close to the guide plate. The water guide plate is opposite to one end of the guide plate close to the water collecting trough and is used to guide water flowing out of the guide plate to the water collecting trough.

6. The dust removal device for compound fertilizer production according to claim 1, characterized in that: A mounting groove is provided on the top of the dust removal box, and the mounting groove extends along the length direction of the dust removal box. A plurality of air inlets are provided, and each of the air inlets is spaced apart on the bottom wall of the mounting groove. The air suction unit includes a plurality of exhaust fans, and each of the exhaust fans is respectively installed on each of the air inlets.

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