Continuous worm cast granule screening apparatus

Abstract

The utility model relates to the technical field of screening equipment discloses earthworm manure particle screening equipment of continuous screening, including the chassis, the side of chassis is provided with the chute, the inside sliding connection of chute has the sliding block, the side of sliding block is provided with screening assembly, screening assembly includes the first casing, the first casing fixed connection in the side of sliding block, both sides of first casing all rotatively connected with connecting shaft, fixedly connected with the second casing between two connecting shafts, the bottom fixed connection of second casing has the sieve plate, the utility model discloses the first casing and the second casing of both sides can block the material above the sieve plate, reduce the leakage when vibrating screening, with the help connecting axle makes the second casing rotate folding to the first casing, can drive sieve plate ninety degrees to rotate and dump big granular material, improve the efficiency, and utilize air compressor output high pressure gas, and the sieve eye of sieve plate is blown back through the air jet head, and the blockage is blown to the sieve plate surface, reduces the sieve eye blockage, and the smooth unloading is convenient.

Description

Technical Field

[0001] This utility model relates to the field of screening equipment technology, and in particular to a continuous screening equipment for earthworm castings pellets. Background Technology

[0002] Earthworm castings are the excrement produced by earthworms after digesting organic waste. They are rich in organic matter, microorganisms, nutrients needed for plant growth (such as nitrogen, phosphorus, and potassium), as well as various enzymes and hormones. They are a high-quality organic fertilizer with wide applications in agriculture, horticulture, and environmental protection. Earthworm castings of different particle sizes are suitable for different uses. Fine-grained earthworm castings may be more suitable as a seedling substrate because they provide better soil structure and water retention; while coarse-grained earthworm castings may be more suitable as a soil conditioner because they can improve soil aeration and drainage. Screening can achieve particle size classification of earthworm castings to meet different usage needs.

[0003] A search revealed Chinese patent CN220760034U, which discloses an earthworm casting pellet screening device. Addressing the issue that existing screening devices typically have screens installed inside the equipment, requiring the screening process to be paused for cleaning, which slows down the screening process and necessitates removing the screens for cleaning – a very inconvenient process. Therefore, this device incorporates a power unit to rotate the screen cylinder, utilizing various parts of the cylinder to screen the earthworm castings. This reduces the likelihood of screen clogging and automatically clears the screen holes, preventing blockages and eliminating the need to pause the screening process for cleaning, thus improving the efficiency of earthworm casting pellet screening.

[0004] The aforementioned screening equipment uses a screen cylinder for screening. However, the screen cylinder has a large mesh area, making it difficult to maintain and hindering the discharge of large particles. In existing technologies, when using a screen plate to screen earthworm castings, small particles pass through the screen plate while large particles remain on it. These large particles then need to be manually removed before further screening can proceed. This process is cumbersome, reduces the efficiency of earthworm castings screening, prolongs screening time, and affects the screening progress. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a continuous screening device for earthworm castings particles.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a continuous screening earthworm casting pellet screening device, including a base frame, a chute on one side of the base frame, a slider slidably connected inside the chute, and a screening component on one side of the slider;

[0007] The screening assembly includes a first housing, which is fixedly connected to one side of the slider. Connecting shafts are rotatably connected to both sides of the first housing. A second housing is fixedly connected between the two connecting shafts. A sieve plate is fixedly connected to the bottom of the second housing.

[0008] As a further description of the above technical solution:

[0009] One of the connecting shafts is externally fixedly connected to a worm gear, and a stepper motor is fixedly mounted on one side of the first housing.

[0010] As a further description of the above technical solution:

[0011] The output end of the stepper motor is fixedly connected to a worm gear, and the worm gear and the worm wheel are meshed together.

[0012] As a further description of the above technical solution:

[0013] A feed pipe is connected through the upper surface of the first housing, and a material blocking cap is threaded to one end of the feed pipe.

[0014] As a further description of the above technical solution:

[0015] The first housing is fixedly connected to the outside of a connecting frame, and a fixing frame is fixedly connected to one side of the base frame. Two limiting rods and two springs are fixedly connected to the upper surface of the fixing frame.

[0016] As a further description of the above technical solution:

[0017] The spring is sleeved on the outside of the limiting rod, and the two springs are fixedly connected to the lower surface of the connecting frame. The connecting frame is slidably connected to the outside of the two limiting rods, and a limiting plate is fixedly connected to one end of the limiting rod.

[0018] As a further description of the above technical solution:

[0019] A variable speed motor is fixedly installed on the top of one side of the base frame, and a protrusion is fixedly connected to the output end of the variable speed motor. A receiving box is provided on the upper surface of the base frame.

[0020] As a further description of the above technical solution:

[0021] An anti-clogging component is provided on one side of the base frame. The anti-clogging component includes an air compressor, which is fixedly installed on one side of the base frame.

[0022] As a further description of the above technical solution:

[0023] The output end of the air compressor is connected to a folded tube, and a stepper motor is fixedly installed on one side of the base frame. The output end of the stepper motor is fixedly connected to a screw.

[0024] As a further description of the above technical solution:

[0025] The screw is externally threaded with a mounting bracket, which is slidably connected to one side of the base frame. One end of the folded tube is connected to a rigid tube, which is fixedly connected to the outside of the mounting bracket. Multiple jet nozzles are connected to the upper surface of the rigid tube.

[0026] This utility model has the following beneficial effects:

[0027] This invention, through the design of the screening assembly, utilizes the first and second shells on both sides to block the upper part of the screen plate during screening of earthworm castings. This reduces material leakage when the screen plate vibrates under the elastic force of the spring. Furthermore, the connecting shaft drives the second shell to rotate and fold into the first shell, facilitating the movement of the second shell to rotate the screen plate 90 degrees, thereby dumping the material from the screen plate. This eliminates the need for manual cleaning of residual material on the screen plate, improving the continuity of screening and thus increasing screening efficiency.

[0028] This invention utilizes an anti-clogging component to spray high-pressure gas from an air compressor through a jet nozzle. This helps to backflush the screen holes, expelling blockages from inside the screen holes onto the screen surface. Furthermore, the lateral movement of the mounting bracket facilitates lateral movement of the jet nozzle on the back of the screen, allowing for comprehensive airflow across the back of the screen. This helps reduce the likelihood of the screen holes becoming clogged, which could hinder material feeding. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model;

[0030] Figure 2 This is a partial structural diagram of the folded tube connection point proposed in this utility model;

[0031] Figure 3 This is a schematic diagram of the connecting frame structure proposed in this utility model;

[0032] Figure 4 This is a schematic diagram of the second shell structure proposed in this utility model;

[0033] Figure 5 This is a schematic diagram of the fixing frame structure proposed in this utility model;

[0034] Figure 6 This is a schematic diagram of the mounting bracket structure proposed in this utility model.

[0035] Legend:

[0036] 1. Base frame; 2. Slide groove; 3. Slider; 4. First housing; 5. Connecting shaft; 6. Second housing; 7. Screen plate; 8. Worm gear; 9. Stepper motor; 10. Worm; 11. Feed pipe; 12. Material blocking cover; 13. Connecting frame; 14. Fixing frame; 15. Limiting rod; 16. Spring; 17. Limiting plate; 18. Variable speed motor; 19. Protrusion; 20. Receiving box; 21. Air compressor; 22. Stepper motor; 23. Screw; 24. Mounting frame; 25. Folded tube; 26. Rigid tube; 27. Jet nozzle. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] As attached Figure 1-6 As shown, one embodiment of the present invention is provided: a continuous screening earthworm casting pellet screening device, including a base frame 1, a groove 2 on one side of the base frame 1, a slider 3 slidably connected inside the groove 2, connected to a first housing 4, and playing a limiting role for the first housing 4; a screening component is provided on one side of the slider 3.

[0039] The screening assembly includes a first housing 4, which is fixedly connected to one side of the slider 3. Both sides of the first housing 4 are rotatably connected to connecting shafts 5. A second housing 6 is fixedly connected between the two connecting shafts 5. The first housing 4 and the second housing 6 can block the material from above. A screen plate 7 is fixedly connected to the bottom of the second housing 6 for screening materials.

[0040] As attached Figure 1 As shown, a worm gear 8 is fixedly connected to the outside of one of the connecting shafts 5. A stepper motor 9 is fixedly installed on one side of the first housing 4. A worm 10 is fixedly connected to the output end of the stepper motor 9. The worm 10 and the worm gear 8 are meshed together to facilitate the rotation of the connecting shaft 5. A feed pipe 11 is connected through the upper surface of the first housing 4. A material blocking cover 12 is threadedly connected to one end of the feed pipe 11 for material entry. A connecting frame 13 is fixedly connected to the outside of the first housing 4 to facilitate connection with the spring 16 and thus transmit elastic force.

[0041] As attached Figure 5As shown, a fixed frame 14 is fixedly connected to one side of the base frame 1. Two limiting rods 15 and two springs 16 are fixedly connected to the upper surface of the fixed frame 14. The springs 16 are sleeved on the outside of the limiting rods 15, and the limiting rods 15 limit the springs 16. The two springs 16 are fixedly connected to the lower surface of the connecting frame 13, so as to facilitate the transmission of the spring force of the springs 16 to the connecting frame 13. The connecting frame 13 is slidably connected to the outside of the two limiting rods 15. One end of the limiting rod 15 is fixedly connected to a limiting plate 17, which limits the sliding position of the connecting frame 13 outside the limiting rod 15.

[0042] As attached Figure 1 As shown, a variable speed motor 18 is fixedly installed on the top of one side of the base frame 1. A protrusion 19 is fixedly connected to the output end of the variable speed motor 18 for pressing the surface of the connecting frame 13. A receiving box 20 is provided on the upper surface of the base frame 1 for storing materials.

[0043] As attached Figure 2 As shown, an anti-clogging component is provided on one side of the base frame 1. The anti-clogging component includes an air compressor 21, which is fixedly installed on one side of the base frame 1. The output end of the air compressor 21 is connected to a folded tube 25, which is used to unfold and move with the movement of the mounting frame 24. A stepper motor 22 is fixedly installed on one side of the base frame 1. A screw 23 is fixedly connected to the output end of the stepper motor 22. The mounting frame 24 is connected to the external thread of the screw 23. The screw 23 has a screw hole that matches the screw 23, so that the screw 23 drives the mounting frame 24 to move. The mounting frame 24 is slidably connected to one side of the base frame 1. A rigid tube 26 is connected to one end of the folded tube 25. The rigid tube 26 is fixedly connected to the outside of the mounting frame 24. Multiple jet nozzles 27 are connected to the upper surface of the rigid tube 26 and are set below the sieve plate 7 to facilitate the ejection of high-pressure gas.

[0044] Working principle: In use, first open the material blocking cover 12, and feed the material to the surface of the screen plate 7 through the feed pipe 11. Then, start the variable speed motor 18 by controlling the power supply. The output end of the motor drives the protrusion 19 to rotate. When the protruding part of the protrusion 19 rotates and presses against the connecting frame 13, the connecting frame 13 presses down and slides down outside the limit rod 15, thus pressing against the spring 16. The spring 16 is compressed and generates elastic force. When it rebounds, it pushes the connecting frame 13, causing the connecting frame 13 to pull the first housing 4, the second housing 6 and the screen plate 7 to move upward at the same time. This causes the first housing 4 to drive the slider 3 to slide inside the slide groove 2, causing the screen plate 7 to move up and down reciprocatingly. The material is screened, and small particles fall through the screen plate 7 into the receiving box 20. After the small particles are screened, the receiving box 20 filled with small particles is moved and the receiving box 20 for large particles is placed on the surface with the base frame 1. Then, the speed motor 18 is turned off and the stepper motor 9 is turned on. The output end of the stepper motor 9 drives the worm gear 10 to rotate. The worm gear 10 meshes with the worm wheel 8, which in turn drives the connecting shaft 5 to rotate. When the connecting shaft 5 rotates, it drives the second housing 6 to rotate and fold into the inside of the first housing 4, so that the screen plate 7 rotates ninety degrees and pours the material on the screen plate 7 into the bottom large particle receiving box 20, thus completing the discharge.

[0045] When the sieve holes in the sieve plate 7 become clogged and need to be cleaned, the air compressor 21 first uses its output end to deliver high-pressure gas through the folded pipe 25 and the rigid pipe 26 to the inside of the jet nozzle 27. Then, the stepper motor 22 is turned on, and its output end drives the screw 23 to rotate. When the screw 23 rotates, it causes the mounting bracket 24 to slide laterally on one side of the base frame 1, which in turn drives the rigid pipe 26 and multiple jet nozzles 27 to move laterally, spraying air into the sieve holes inside the sieve plate 7 to blow out the blockage and reduce the phenomenon of sieve plate 7 being clogged. Through the tilting action of the screening component, it is easy to discharge the blockage.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A continuous screening device for earthworm castings pellets, comprising a base frame (1), characterized in that: A sliding groove (2) is provided on one side of the base frame (1), and a slider (3) is slidably connected inside the sliding groove (2). A screening component is provided on one side of the slider (3). The screening component includes a first housing (4), which is fixedly connected to one side of the slider (3). A connecting shaft (5) is rotatably connected to both sides of the first housing (4). A second housing (6) is fixedly connected between the two connecting shafts (5). A sieve plate (7) is fixedly connected to the bottom of the second housing (6).

2. The continuous screening equipment for earthworm castings pellets according to claim 1, characterized in that: One of the connecting shafts (5) is externally fixedly connected to a worm gear (8), and a stepper motor (9) is fixedly installed on one side of the first housing (4).

3. The continuous screening equipment for earthworm castings pellets according to claim 2, characterized in that: The output end of the stepper motor (9) is fixedly connected to a worm (10), and the worm (10) and the worm wheel (8) are meshed together.

4. The continuous screening equipment for earthworm castings pellets according to claim 1, characterized in that: The upper surface of the first housing (4) is connected to a feed pipe (11), and one end of the feed pipe (11) is threadedly connected to a material blocking cap (12).

5. The continuous screening equipment for earthworm castings pellets according to claim 1, characterized in that: The first housing (4) is fixedly connected to a connecting frame (13), and a fixing frame (14) is fixedly connected to one side of the base frame (1). Two limiting rods (15) and two springs (16) are fixedly connected to the upper surface of the fixing frame (14).

6. The continuous screening equipment for earthworm castings pellets according to claim 5, characterized in that: The spring (16) is sleeved on the outside of the limiting rod (15), and the two springs (16) are fixedly connected to the lower surface of the connecting frame (13). The connecting frame (13) is slidably connected to the outside of the two limiting rods (15), and one end of the limiting rod (15) is fixedly connected to the limiting plate (17).

7. The continuous screening equipment for earthworm castings pellets according to claim 1, characterized in that: A variable speed motor (18) is fixedly installed on the top of one side of the base frame (1), and a protrusion (19) is fixedly connected to the output end of the variable speed motor (18). A receiving box (20) is provided on the upper surface of the base frame (1).

8. The continuous screening equipment for earthworm castings pellets according to claim 1, characterized in that: An anti-blocking component is provided on one side of the base frame (1). The anti-blocking component includes an air compressor (21), which is fixedly installed on one side of the base frame (1).

9. The continuous screening equipment for earthworm castings pellets according to claim 8, characterized in that: The output end of the air compressor (21) is connected to a folded tube (25), and a stepper motor (22) is fixedly installed on one side of the base frame (1). The output end of the stepper motor (22) is fixedly connected to a screw (23).

10. The continuous screening equipment for earthworm castings pellets according to claim 9, characterized in that: The screw (23) is externally threaded with a mounting bracket (24), which is slidably connected to one side of the base frame (1). One end of the folded tube (25) is connected to a rigid tube (26), which is fixedly connected to the outside of the mounting bracket (24). Multiple jet nozzles (27) are connected to the upper surface of the rigid tube (26).

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