Finished powder screening equipment

Abstract

The utility model relates to the technical field of powder compound fertilizer production, and discloses finished product powder screening equipment which comprises a screening shell, an opening and closing top cover is connected to the top of the screening shell in a clamped mode, the top of the opening and closing top cover is communicated with a feeding pipe, and a discharging mechanism and a screening assembly are arranged in the screening shell. The screening assembly is located under the discharging mechanism. The discharging mechanism comprises a narrow-mouth hopper and a gear motor, when powdery chemical fertilizer is conveyed through a bag, the bag can be directly put into the discharging mechanism, then an opening and closing top cover is closed, a feeding pipe is closed, a rotating shaft is driven to rotate through the gear motor, then a cutting blade is driven to rotate, the bag is cut, then a cam abuts against an abutting plate, and the bag is conveyed to the discharging mechanism. The narrow-mouth hopper extrudes the spring, then the narrow-mouth hopper vibrates up and down, it is ensured that the powdery chemical fertilizer in the bag can fall off, and in the whole feeding process, splashing powder is blocked by the opening and closing top cover and the screening shell and cannot fly out in a large amount.

Description

Technical Field

[0001] This utility model relates to the field of powder compound fertilizer production technology, specifically to a finished powder screening device. Background Technology

[0002] In the fertilizer production process, the particle size distribution of powdered compound fertilizer directly affects the product quality and application effect. Existing technology uses screening equipment for screening, but the screening effect is poor and a large amount of dust is generated during operation, causing air pollution. Especially when adding powdered compound fertilizer to the hopper or directly to the screening device, the powder is most likely to be scattered in the air, which not only wastes the powder but also causes a large amount of dust to pollute the air. Utility Model Content

[0003] The purpose of this invention is to provide a finished powder screening device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a finished powder screening device, including a screening shell, an opening and closing top cover snapped onto the top of the screening shell, a feed pipe connected to the top of the opening and closing top cover, and a feeding mechanism and a screening component arranged inside the screening shell, with the screening component located directly below the feeding mechanism;

[0005] The feeding mechanism includes a narrow-mouth hopper and a geared motor. Guide rods are slidably installed at the four corners of the top of the narrow-mouth hopper. The top and bottom ends of the guide rods are fixedly connected to the inner wall of the top opening of the screening shell. A spring is slidably sleeved on the outer wall of the guide rod. The spring is located between the narrow-mouth hopper and the inner wall of the top opening of the screening shell. The geared motor is fixedly installed on the outer wall of the screening shell. A rotating shaft is fixedly installed at the output end of the geared motor. A cutting blade is fixedly installed on the outer wall of the rotating shaft. The cutting blade extends into the bottom opening of the narrow-mouth hopper. A cam is fixedly installed on the outside of the rotating shaft. An abutment plate is fixedly installed on the side outer wall of the narrow-mouth hopper. The cam contacts the arc groove at the bottom of the abutment plate.

[0006] Furthermore, the screening assembly includes a screening hopper, which is fixedly installed inside the screening housing. The front of the screening hopper is provided with an upper slot and a lower slot. An upper screening frame is engaged in the upper slot, and a lower screening frame is engaged in the lower slot. The front ends of both the upper and lower screening frames extend out from inside the screening housing.

[0007] Furthermore, a through hole is provided on the right side of the screening shell, and the through hole is close to the bottom of the screening shell. A material receiving component is fixedly installed on the bottom of the screening shell, and the material receiving component communicates with the through hole. The bottom of the screening shell is an inclined surface, and the lowest point is located at the through hole.

[0008] Furthermore, the receiving assembly includes a receiving bin, the top opening of which communicates with a through hole on the screening shell, a material dispensing door is installed on the left side of the receiving bin, and an exhaust assembly is connected to the left side of the receiving bin.

[0009] Furthermore, the exhaust assembly includes an exhaust pipe, the bottom end of which is connected to the inside of the receiving hopper, and the top end of which is connected to a filter chamber. A filter screen and a dustproof screen are fixedly installed inside the filter chamber, with the dustproof screen located above the filter screen.

[0010] Furthermore, a guide plate is fixedly installed on the inner wall of the screening shell, and the guide plate is located directly below the bottom opening of the narrow-mouth hopper.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. When conveying powdered fertilizer through pipelines, the pipeline can be connected to the feed pipe and then added to the feeding mechanism. When conveying powdered fertilizer through bags, the bags can be directly placed into the feeding mechanism, then the top cover can be closed and the feed pipe can be sealed. The rotating shaft is driven by the reduction motor, which in turn drives the cutting blade to rotate and cut the bag. Then, the cam pushes against the contact plate, causing the narrow-mouth hopper to squeeze the spring, which in turn causes the narrow-mouth hopper to vibrate up and down, ensuring that the powdered fertilizer in the bag can fall out. During the entire feeding process, the splashed powder is blocked by the top cover and the screening shell and will not fly out in large quantities. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This utility model Figure 1 A structural schematic diagram of the front sectional view;

[0015] Figure 3 This is a schematic diagram of the material feeding mechanism of this utility model;

[0016] Figure 4 This is a schematic diagram of the exploded view of the screening component of this utility model;

[0017] Figure 5 This is a structural schematic diagram of the front sectional view of the material receiving assembly and the exhaust assembly of this utility model.

[0018] In the diagram: 1. Screening shell; 2. Opening and closing top cover; 201. Feed pipe; 3. Discharge mechanism; 301. Narrow-mouth hopper; 302. Gear motor; 303. Rotating shaft; 304. Contact plate; 305. Cam; 306. Cutting blade; 307. Guide rod; 308. Spring; 4. Receiving assembly; 401. Receiving bin; 402. Discharge gate; 5. Screening assembly; 501. Screening hopper; 502. Upper slot; 503. Lower slot; 504. Upper screening frame; 505. Lower screening frame; 6. Exhaust assembly; 601. Exhaust pipe; 602. Filter chamber; 603. Filter screen; 604. Dustproof screen; 7. Guide plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Please see Figures 1-5 This utility model provides a technical solution: a finished powder screening device, including a screening shell 1, an opening and closing top cover 2 is snapped onto the top of the screening shell 1, a feed pipe 201 is connected to the top of the opening and closing top cover 2, and a feeding mechanism 3 and a screening component 5 are arranged inside the screening shell 1, with the screening component 5 located directly below the feeding mechanism 3.

[0021] The feeding mechanism 3 includes a narrow-mouth hopper 301 and a reduction motor 302. Guide rods 307 are slidably mounted at the four corners of the top of the narrow-mouth hopper 301. The top and bottom ends of the guide rods 307 are fixedly connected to the inner wall of the top opening of the screening housing 1. A spring 308 is slidably sleeved on the outer wall of the guide rods 307, and the spring 308 is positioned between the narrow-mouth hopper 301 and the inner wall of the top opening of the screening housing 1. The reduction motor 302 is fixedly mounted on the outer wall of the screening housing 1. A rotating shaft 303 is fixedly mounted on the output end of the reduction motor 302. A cutting blade 306 is fixedly mounted on the outer wall of the rotating shaft 303, extending into the bottom opening of the narrow-mouth hopper 301. A cam 305 is fixedly mounted on the outside of the rotating shaft 303. An abutment plate 30 is fixedly mounted on the outer side wall of the narrow-mouth hopper 301. 4. The cam 305 contacts the arc groove at the bottom of the contact plate 304. When the powder fertilizer is transported by pipeline, the pipeline can be connected to the feed pipe 201 and then added into the feeding mechanism 3. When the powder fertilizer is transported by bag, the bag can be directly put into the feeding mechanism 3, and then the opening and closing top cover 2 is closed and the feed pipe 201 is sealed. The reduction motor 302 drives the rotating shaft 303 to rotate, which in turn drives the cutting blade 306 to rotate and cut the bag. Then the cam 305 pushes against the contact plate 304, which causes the narrow-mouth hopper 301 to squeeze the spring 308, which in turn causes the narrow-mouth hopper 301 to vibrate up and down, ensuring that the powder fertilizer in the bag can fall out. During the entire feeding process, the splashed powder is blocked by the opening and closing top cover 2 and the screening shell 1 and will not fly out in large quantities.

[0022] The screening assembly 5 includes a screening hopper 501, which is fixedly installed inside the screening housing 1. The front of the screening hopper 501 has an upper slot 502 and a lower slot 503. An upper screening frame 504 is engaged in the upper slot 502, and a lower screening frame 505 is engaged in the lower slot 503. The front ends of the upper screening frame 504 and the lower screening frame 505 both extend out of the screening housing 1. The upper screening frame 504 and the lower screening frame 505 are arranged vertically for replacement. When it is necessary to clean the upper screening frame 504, it can be removed directly. When it is necessary to remove the lower screening frame 505, it is only necessary to insert the upper screening frame 504 first, without stopping the screening.

[0023] A through hole is provided on the right side of the screening shell 1, and the through hole is close to the bottom of the screening shell 1. A receiving component 4 is fixedly installed on the bottom of the screening shell 1. The receiving component 4 is connected to the through hole. The bottom of the screening shell 1 is an inclined surface, and the lowest point is located at the through hole. The screened fertilizer is introduced into the receiving component 4 through the through hole. The receiving component 4 catches the fertilizer to prevent the fertilizer from flying around.

[0024] The receiving assembly 4 includes a receiving bin 401. The top opening of the receiving bin 401 is connected to the through hole on the screening shell 1. A material dispensing door 402 is installed on the left side of the receiving bin 401. An exhaust assembly 6 is connected to the left side of the receiving bin 401. The receiving bin 401 is set to store the screened fertilizer. The material dispensing door 402 is set to take out the fertilizer in the receiving bin 401. The exhaust assembly 6 is set to discharge excess air in the receiving bin 401.

[0025] The exhaust assembly 6 includes an exhaust pipe 601. The bottom end of the exhaust pipe 601 is connected to the inside of the receiving hopper 401, and the top end of the exhaust pipe 601 is connected to a filter chamber 602. A filter screen 603 and a dustproof net 604 are fixedly installed in the filter chamber 602. The dustproof net 604 is located above the filter screen 603. Excess air in the receiving hopper 401 is discharged through the exhaust pipe 601 and the filter chamber 602. Powdered fertilizer in the air is filtered by the filter screen 603 in the filter chamber 602 to prevent fertilizer from flying around. The dustproof net 604 is set to prevent external debris from falling onto the filter screen 603 and then cover the holes on the filter screen 603.

[0026] A guide plate 7 is fixedly installed on the inner wall of the screening shell 1. The guide plate 7 is located directly below the bottom opening of the narrow-mouth hopper 301. The guide plate 7 is set to guide and disperse the fertilizer falling from the bottom opening of the narrow-mouth hopper 301, so as to prevent the fertilizer from accumulating in one place.

[0027] Working principle: When using powdered fertilizer, the pipeline can be connected to the feed pipe 201, and then the fertilizer can be added into the feeding mechanism 3. When using bags to transport powdered fertilizer, the bags can be directly placed into the feeding mechanism 3, then the opening and closing top cover 2 is closed, and the feed pipe 201 is sealed. The reduction motor 302 drives the rotating shaft 303 to rotate, which in turn drives the cutting blade 306 to rotate, cutting the bag. Then, the cam 305 abuts against the contact plate 304. The narrow-mouth hopper 301 compresses the spring 308, causing the narrow-mouth hopper 301 to vibrate up and down, ensuring that the powdered fertilizer in the bag can fall out. The fertilizer falls onto the upper screening frame 504 or the lower screening frame 505, is screened, and then falls to the bottom of the screening shell 1, and then slides into the receiving bin 401. The fertilizer that does not pass through the screen holes remains in the upper screening frame 504 and the lower screening frame 505. Pulling out the upper screening frame 504 or the lower screening frame 505 will remove the corresponding fertilizer.

[0028] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A finished powder screening apparatus comprising a screening housing (1), characterized in that: The top of the screening shell (1) is clamped with an openable and closable top cover (2), the top of the openable and closable top cover (2) is communicated with a feeding pipe (201), the inside of the screening shell (1) is provided with a discharging mechanism (3), a screening assembly (5), the screening assembly (5) is located directly below the discharging mechanism (3); The discharging mechanism (3) includes a narrow mouth hopper (301), a speed reducer (302), the top four corners of the narrow mouth hopper (301) are slidably provided with guide rods (307), the top end and the bottom end of the guide rod (307) are fixedly connected with the top opening inner wall of the screening shell (1), the outer wall of the guide rod (307) is slidably sleeved with a spring (308), the spring (308) is arranged between the narrow mouth hopper (301) and the top opening inner wall of the screening shell (1), the speed reducer (302) is fixedly installed on the outer wall of the screening shell (1), the output end of the speed reducer (302) is fixedly installed with a rotating shaft (303), the outer wall of the rotating shaft (303) is fixedly installed with a cutting piece (306), the cutting piece (306) extends into the bottom opening of the narrow mouth hopper (301), the outer portion of the rotating shaft (303) is fixedly installed with a cam (305), the side outer wall of the narrow mouth hopper (301) is fixedly installed with a resisting plate (304), the cam (305) is in contact with the circular arc groove at the bottom of the resisting plate (304).

2. A finished powder screening apparatus as claimed in claim 1, wherein: The screening assembly (5) includes a screening hopper (501), the screening hopper (501) is fixedly installed in the screening shell (1), the front of the screening hopper (501) is provided with an upper clamping groove (502) and a lower clamping groove (503), the upper clamping groove (502) is clamped with an upper screening frame (504), the lower clamping groove (503) is clamped with a lower screening frame (505), the front end of the upper screening frame (504) and the lower screening frame (505) extends out of the screening shell (1).

3. A finished powder screening apparatus as claimed in claim 1, wherein: The right side of the screening shell (1) is provided with a through hole, and the through hole is close to the bottom of the screening shell (1), the bottom of the screening shell (1) is fixedly installed with a material receiving assembly (4), the material receiving assembly (4) is communicated with the through hole, the bottom of the screening shell (1) is an inclined surface, and the lowest point is located at the through hole.

4. A finished powder screening apparatus as claimed in claim 3, wherein: The material receiving assembly (4) includes a material receiving bin (401), the top opening of the material receiving bin (401) is communicated with the through hole on the screening shell (1), a material taking door (402) is installed on the left side of the material receiving bin (401), the left side of the material receiving bin (401) is communicated with an exhaust assembly (6).

5. A finished powder screening apparatus as claimed in claim 4, wherein: The exhaust assembly (6) includes an exhaust pipe (601), the bottom end of the exhaust pipe (601) is communicated with the inside of the material receiving bin (401), the top end of the exhaust pipe (601) is communicated with a filtering cavity (602), the filtering cavity (602) is fixedly installed with a filter screen (603) and a dustproof screen (604), the dustproof screen (604) is located above the filter screen (603).

6. A finished powder screening apparatus as claimed in claim 1, wherein: The inner wall of the screening shell (1) is fixedly provided with a material guide plate (7) located directly below the bottom opening of the narrow-mouth hopper (301).

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