Dedusting device for tail gas of chemical fertilizer plant

Abstract

The utility model relates to the technical field of chemical fertilizer plant tail gas dust removal, and discloses a chemical fertilizer plant tail gas dust removal device which comprises a dust removal box. The cleaning and conveying mechanism comprises a spring, a filter screen plate, a rotating rod, a cam, a first bevel gear set, a two-way motor, a rotating shaft, a second bevel gear set, a conveying barrel, a conveying roller and conveying blades, the spring is fixedly installed in the dust removal box through a supporting plate, and the filter screen plate is fixedly connected with the top end of the spring and slidably connected into the dust removal box. The filter screen plate shakes up and down, dust particles attached to the surface of the filter screen plate can be shaken off, the surface of the filter screen plate can be kept clean continuously, the situation that filter screen holes are blocked due to long-time accumulation of the dust particles is avoided, and the filtered and intercepted dust particles can be evenly conveyed through the conveying blades; and finally, the dust can be output through the dust outlet pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas dust removal in fertilizer plants, and particularly relates to a tail gas dust removal device for fertilizer plants. Background Technique

[0002] Tail gas dust removal in fertilizer plants refers to the process of purifying the tail gas generated during the fertilizer production process to remove pollutants such as dust particles therein.

[0003] According to a tail gas dust removal device for fertilizer plants disclosed in a Chinese patent with the publication number "CN207187403U", which includes a spray tower. An inner diameter reduction section for increasing the air flow velocity is provided on the spray tower. An air inlet pipe for discharging the tail gas to be treated into the spray tower is provided below the inner diameter reduction section. A water spraying device for spraying water into the spray tower is provided above the inner diameter reduction section. In the tail gas dust removal device of the utility model, when the tail gas in the air inlet pipe enters the spray tower and flows upward to the inner diameter reduction section, the speed increases to form a high-speed air flow. The high-speed air flow collides with the spray water, atomizing the water and fully mixing it. The dust particles in the tail gas collide with the droplets and combine into large particles, which fall to the bottom of the spray tower under the action of gravity and are thus removed. Since the spray water and the tail gas flow in opposite directions to form a convection, the dust removal effect is better than that of the traditional Venturi effect dust collector. Since the air flow velocity is large, the dust removal effect is better than that of the traditional spray tower. When the above device is in use, a good cleaning structure is not provided. Since the tail gas contains a large amount of dust particles, after the filter mesh plate filters for a period of time, a large amount of dust will adhere to the surface, which not only reduces the filtration efficiency but also requires frequent shutdown for manual cleaning, seriously affecting the production efficiency of the fertilizer plant. At the same time, for the dust particles intercepted by filtration, there is a lack of an effective automatic conveying and treatment mechanism. Therefore, a tail gas dust removal device for fertilizer plants is proposed to solve the above-mentioned problems. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a tail gas dust removal device for fertilizer plants aiming at the deficiencies in the above-mentioned prior art.

[0005] To solve the above technical problems, the technical solution adopted by the present utility model is as follows: A tail gas dust removal device for a fertilizer factory, comprising a dust removal box. A cleaning and conveying mechanism is arranged inside the dust removal box. The cleaning and conveying mechanism includes a spring, a filter screen plate, a rotating rod, a cam, a first bevel gear set, a bidirectional motor, a rotating shaft, a second bevel gear set, a conveying cylinder, a conveying roller, and conveying blades. The spring is fixedly installed inside the dust removal box through a support plate. The filter screen plate is fixedly connected to the top end of the spring and is slidably connected inside the dust removal box. One end of the rotating rod is rotatably connected inside the dust removal box through a bearing. The cam is fixedly sleeved on the outer wall of the rotating rod. One bevel gear in the first bevel gear set is fixedly sleeved on the outer wall of the other end of the rotating rod. The bidirectional motor is fixedly installed on one side of the dust removal box. The rotating shaft is fixedly connected to the output end of the bidirectional motor. The top end of the rotating shaft is fixedly sleeved inside the other bevel gear of the first bevel gear set. One bevel gear in the second bevel gear set is fixedly sleeved on the outer wall of the bottom end of the rotating shaft. The conveying roller is rotatably connected inside the conveying cylinder. One end of the conveying roller is fixedly sleeved inside the other bevel gear of the second bevel gear set. The conveying blades are fixedly installed on the outer wall of the conveying roller.

[0006] Preferably, the cleaning and conveying mechanism further includes a dust collection hopper. The dust collection hopper is fixedly installed at the bottom of the dust removal box, and the bottom of the dust collection hopper is fixedly connected to the conveying cylinder. Through this preference, the weight of the small particle dust increases, so that it settles down, and finally can be collected by the dust collection hopper.

[0007] Preferably, the cleaning and conveying mechanism further includes a dust outlet pipe. The dust outlet pipe is fixedly installed at the bottom of the conveying cylinder. Through this preference, the conveying blades can evenly convey the dust particles intercepted by filtration, and finally can be output and processed through the dust outlet pipe.

[0008] Preferably, a spraying mechanism is arranged at the top of the inner wall of the dust removal box. The spraying mechanism includes a tail gas inlet and a tail gas outlet. The tail gas inlet is fixedly installed on the left side of the dust removal box, and the tail gas outlet is fixedly installed at the top of the dust removal box. Through this preference, the tail gas to be dust-removed enters the inside of the dust removal box through the tail gas inlet.

[0009] Preferably, the spraying mechanism further includes a water pump, a suction pipe, and a water storage tank. The water pump is fixedly installed on the right side of the dust removal box. One end of the suction pipe is fixedly connected to the water pump, and the other end of the suction pipe is fixedly connected to the water storage tank. Through this preference, by starting the water pump, the water pump can extract the water inside the water storage tank through the suction pipe.

[0010] Preferably, the spraying mechanism further includes a conveying pipe and atomizing nozzles. The conveying pipe is fixedly installed inside the dust removal box. The atomizing nozzles are fixedly installed at the bottom of the conveying pipe. One end of the conveying pipe is fixedly connected to the water pump. Through this preference, the fine water mist sprayed by the atomizing nozzles can combine with the small particle dust in the tail gas.

[0011] Adopting the above technical solution, the utility model can bring the following beneficial effects:

[0012] 1. For the tail gas dust removal device of the fertilizer factory, under the combined action of a spring, a filter screen plate, a rotating rod, a cam, a first set of helical gears, a bidirectional motor, a rotating shaft, a second set of helical gears, a conveying cylinder, a conveying roller, conveying blades, a dust collecting hopper, and a dust outlet pipe, the filter screen plate vibrates up and down, and the dust particles adhering to the surface of the filter screen plate can be shaken off, continuously keeping the surface clean and avoiding the blockage of the filter screen holes caused by the long-term accumulation of dust particles. The conveying blades can evenly convey the dust particles intercepted by the filtration, and finally output and process them through the dust outlet pipe.

[0013] 2. For the tail gas dust removal device of the fertilizer factory, under the combined action of a tail gas inlet, a tail gas outlet, a water pump, a suction pipe, a water storage tank, a conveying pipe, and an atomizing nozzle, the comprehensiveness of the dust removal effect is improved, and it can cope with the complex dust composition in the tail gas, and both large and small particle dust can be effectively removed. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the utility model;

[0015] Figure 2 is a schematic side view structural diagram of the utility model;

[0016] Figure 3 is a schematic partial sectional structural diagram of the conveying cylinder of the utility model;

[0017] Figure 4 is a schematic partial sectional structural diagram of the dust removal box of the utility model.

[0018] In the figure: 1. Dust removal box; 21. Cleaning and conveying mechanism; 211. Spring; 212. Filter screen plate; 213. Rotating rod; 214. Cam; 215. First set of helical gears; 216. Bidirectional motor; 217. Rotating shaft; 218. Second set of helical gears; 219. Conveying cylinder; 220. Conveying roller; 221. Conveying blades; 222. Dust collecting hopper; 223. Dust outlet pipe; 31. Spraying mechanism; 311. Tail gas inlet; 312. Tail gas outlet; 313. Water pump; 314. Suction pipe; 315. Water storage tank; 316. Conveying pipe; 317. Atomizing nozzle. Detailed Embodiment

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model 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 of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] 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.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0022] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0023] Please refer to Figures 1-4, an embodiment of the present utility model is: a tail gas dust removal device for a fertilizer factory, including a dust removal box 1. Inside the dust removal box 1, a cleaning and conveying mechanism 21 is arranged. The cleaning and conveying mechanism 21 includes a spring 211, a filter screen plate 212, a rotating rod 213, a cam 214, a first bevel gear set 215, a bidirectional motor 216, a rotating shaft 217, a second bevel gear set 218, a conveying cylinder 219, a conveying roller 220, and conveying blades 221. The spring 211 is fixedly installed inside the dust removal box 1 through a support plate. The filter screen plate 212 is fixedly connected to the top of the spring 211 and is slidably connected inside the dust removal box 1. One end of the rotating rod 213 is rotatably connected to the inside of the dust removal box 1 through a bearing. The cam 214 is fixedly sleeved on the outer wall of the rotating rod 213. One bevel gear in the first bevel gear set 215 is fixedly sleeved on the outer wall of the other end of the rotating rod 213. The bidirectional motor 216 is fixedly installed on one side of the dust removal box 1. The rotating shaft 217 is fixedly connected to the output end of the bidirectional motor 216. The top of the rotating shaft 217 is fixedly sleeved on the inner wall of the other bevel gear in the first bevel gear set 215. One bevel gear in the second bevel gear set 218 is fixedly sleeved on the outer wall of the bottom end of the rotating shaft 217. The conveying roller 220 is rotatably connected to the inner wall of the conveying cylinder 219. One end of the conveying roller 220 is fixedly sleeved on the inner wall of the other bevel gear in the second bevel gear set 218. The conveying blades 221 are fixedly installed on the outer wall of the conveying roller 220. The cleaning and conveying mechanism 21 further includes a dust collection hopper 222. The dust collection hopper 222 is fixedly installed at the bottom of the dust removal box 1. The bottom of the dust collection hopper 222 is fixedly connected to the conveying cylinder 219. The cleaning and conveying mechanism 21 further includes a dust outlet pipe 223. The dust outlet pipe 223 is fixedly installed at the bottom of the conveying cylinder 219;

[0024] Working principle: By starting the bidirectional motor 216, the output end of the bidirectional motor 216 drives the fixedly connected rotating shaft 217 to rotate, thereby driving the first bevel gear set 215 fixedly sleeved on the top outer wall of the rotating shaft 217 to rotate. Under the driving connection of two meshing bevel gears, the rotating rod 213 is driven to rotate, and then the cam 214 fixedly sleeved on the outer wall of the rotating rod 213 is driven to rotate. The cam 214 can squeeze the filter screen plate 212 downward, and the spring 211 contracts. Under the resilience of the spring 211, the filter screen plate 212 is driven to vibrate up and down, and the dust particles attached to the surface of the filter screen plate 212 can be shaken off, which can continuously keep its surface clean and avoid the blockage of the filter screen holes caused by the long-term accumulation of dust particles. Finally, it can be conveyed to the inside of the conveying cylinder 219 through the dust collection hopper 222. While the rotating shaft 217 is rotating, the second bevel gear set 218 fixedly sleeved on the bottom outer wall of the rotating shaft 217 is driven to rotate. Under the driving connection of two meshing bevel gears, the conveying roller 220 is driven to rotate, and then the conveying blades 221 fixedly installed on the outer wall of the conveying roller 220 are driven to rotate. The conveying blades 221 can evenly convey the filtered and intercepted dust particles, and finally can be output and processed through the dust outlet pipe 223.

[0025] Please refer to Figures 1-4 , on the basis of the above embodiments, in another embodiment of the present utility model, a spraying mechanism 31 is provided at the top of the inner wall of the dust removal box 1. The spraying mechanism 31 includes a tail gas inlet 311 and a tail gas outlet 312. The tail gas inlet 311 is fixedly installed on the left side of the dust removal box 1, and the tail gas outlet 312 is fixedly installed on the top of the dust removal box 1. The spraying mechanism 31 further includes a water pump 313, a suction pipe 314, and a water storage tank 315. The water pump 313 is fixedly installed on the right side of the dust removal box 1. One end of the suction pipe 314 is fixedly connected to the water pump 313, and the other end of the suction pipe 314 is fixedly connected to the water storage tank 315. The spraying mechanism 31 further includes a delivery pipe 316 and an atomizing nozzle 317. The delivery pipe 316 is fixedly installed inside the dust removal box 1, and the atomizing nozzle 317 is fixedly installed at the bottom of the delivery pipe 316. One end of the delivery pipe 316 is fixedly connected to the water pump 313.

[0026] Working principle: The tail gas to be dust-removed enters the inside of the dust removal box 1 through the tail gas inlet 311. The filter screen plate 212 inside the dust removal box 1 can filter and intercept large-particle dust in the tail gas. By starting the water pump 313, the water pump 313 can extract the water inside the water storage tank 315 through the suction pipe 314, and then transport it into the delivery pipe 316. Finally, it is atomized and sprayed by the atomizing nozzle 317. The fine water mist sprayed by the atomizing nozzle 317 can combine with the small-particle dust in the tail gas, increasing the weight of the small-particle dust, so that it settles down. Finally, it can be collected by the dust collection hopper 222. The tail gas after filtering the dust can be discharged through the tail gas outlet 312, thereby improving the comprehensiveness of the dust removal effect and being able to handle the complex dust composition in the tail gas. Whether it is large-particle or small-particle dust, it can be effectively removed.

[0027] It should be noted that, for the convenience of control, a control switch is provided on the two-way motor 216 in the above embodiments. The control switch can control the two-way motor 216 to work. The above are all prior arts and not the main innovation points, so no detailed description will be made here.

[0028] The present utility model provides a tail gas dust removal device for a fertilizer factory. There are many methods and ways to specifically implement this technical solution. The above description is only the preferred embodiment of the present utility model. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model. Each component not clearly defined in this embodiment can be implemented by using the prior art.

Claims

1. A tail gas dust removal device for a chemical fertilizer plant, comprising a dust removal box (1), characterized in that: Inside the dust removal box (1), a cleaning and conveying mechanism (21) is provided. The cleaning and conveying mechanism (21) includes a spring (211), a filter screen plate (212), a rotating rod (213), a cam (214), a first bevel gear set (215), a bidirectional motor (216), a rotating shaft (217), a second bevel gear set (218), a conveying cylinder (219), a conveying roller (220), and conveying blades (221). The spring (211) is fixedly installed inside the dust removal box (1) through a support plate. The filter screen plate (212) is fixedly connected to the top of the spring (211) and is slidably connected inside the dust removal box (1). One end of the rotating rod (213) is rotatably connected inside the dust removal box (1) through a bearing. The cam (214) is fixedly sleeved on the outer wall of the rotating rod (213). One bevel gear in the first bevel gear set (215) is fixedly sleeved on the outer wall of the other end of the rotating rod (213). The bidirectional motor (216) is fixedly installed on one side of the dust removal box (1). The rotating shaft (217) is fixedly connected to the output end of the bidirectional motor (216). The top of the rotating shaft (217) is fixedly sleeved inside the other bevel gear of the first bevel gear set (215). One bevel gear in the second bevel gear set (218) is fixedly sleeved on the outer wall of the bottom end of the rotating shaft (217). The conveying roller (220) is rotatably connected to the inner wall of the conveying cylinder (219). One end of the conveying roller (220) is fixedly sleeved inside the other bevel gear of the second bevel gear set (218). The conveying blades (221) are fixedly installed on the outer wall of the conveying roller (220).

2. The tail gas dust removal device of a chemical fertilizer plant according to claim 1, characterized in that: The cleaning and conveying mechanism (21) further includes a dust collection hopper (222). The dust collection hopper (222) is fixedly installed at the bottom of the dust removal box (1). The bottom of the dust collection hopper (222) is fixedly connected to the conveying cylinder (219).

3. The tail gas dust removal device of a fertilizer plant according to claim 1, characterized in that: The cleaning and conveying mechanism (21) further includes a dust outlet pipe (223). The dust outlet pipe (223) is fixedly installed at the bottom of the conveying cylinder (219).

4. An exhaust gas dust removal device for a fertilizer plant according to claim 1, characterized in that: At the top of the inner wall of the dust removal box (1), a spraying mechanism (31) is provided. The spraying mechanism (31) includes an exhaust gas inlet (311) and an exhaust gas outlet (312). The exhaust gas inlet (311) is fixedly installed on the left side of the dust removal box (1). The exhaust gas outlet (312) is fixedly installed on the top of the dust removal box (1).

5. The tail gas dust removal device of a fertilizer plant according to claim 4, characterized in that: The spraying mechanism (31) further includes a water pump (313), a suction pipe (314), and a water storage tank (315). The water pump (313) is fixedly installed on the right side of the dust removal box (1). One end of the suction pipe (314) is fixedly connected to the water pump (313). The other end of the suction pipe (314) is fixedly connected to the water storage tank (315).

6. The tail gas dust removal device of a chemical fertilizer plant according to claim 4, characterized in that: The spraying mechanism (31) further includes a conveying pipe (316) and atomizing nozzles (317). The conveying pipe (316) is fixedly installed inside the dust removal box (1). The atomizing nozzles (317) are fixedly installed at the bottom of the conveying pipe (316). One end of the conveying pipe (316) is fixedly connected to the water pump (313).

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