Organic fertilizer screening device

Abstract

The utility model provides an organic fertilizer screening device, and relates to the technical field of organic fertilizer screening treatment.The organic fertilizer screening device comprises a screening box, a feeding cylinder is arranged on the top face of the screening box, a discharging cylinder is arranged on the bottom face of the screening box, a drying mechanism is arranged at the position, close to the lower end of the feeding cylinder, of the inner wall of the screening box, and the organic fertilizer screening device further comprises a containing cylinder connected to one side of the screening box and communicated with the screening box; a first screen is connected between the screening box and the containing cylinder, the low position of the first screen is erected on the containing cylinder, and the first screen can feed fertilizer into the containing cylinder; and a conveying mechanism is arranged in the containing cylinder, and the conveying mechanism can upwards convey the organic fertilizer fed into the containing cylinder by the first screen. By arranging the conveying mechanism, the organic fertilizer which falls from the feeding cylinder, passes through the drying mechanism and is dried once can be upwards conveyed to the hot air outlet of the drying mechanism to be dried again, so that the organic fertilizer can be fully dried.

Description

Technical Field

[0001] This application relates to the technical field of screening treatment of organic fertilizers, and particularly relates to an organic fertilizer screening device. Background Art

[0002] Organic fertilizers are also called farmyard fertilizers. Any fertilizer made of organic substances (compounds containing carbon elements) is called an organic fertilizer, including human feces, manure, biogas fertilizer, etc. They have the characteristics of many types, wide sources, and long fertilizer effects. The nutrient elements contained in organic fertilizers are mostly in an organic state, which is difficult for crops to directly utilize. Through the action of microorganisms, various nutrient elements are slowly released, continuously supplying nutrients to crops. Using organic fertilizers can improve the soil structure, coordinate the water, fertilizer, air, and heat in the soil, and improve soil fertility and land productivity. As an essential fertilizer for crop growth, organic fertilizers are usually produced through processes such as stacking, fermentation, pulverization, screening, and drying. Among them, in the screening process, a screening device is required.

[0003] When the organic fertilizer screening device screens organic fertilizers, the organic fertilizers tend to form lumps due to moisture. When the existing screening device screens organic fertilizers, a corresponding drying mechanism is provided to dry the organic fertilizers. However, the existing drying mechanism is generally arranged at the feeding cylinder of the screening device, and the organic fertilizers can only be dried at the moment of entering the screening device, resulting in insufficient drying of the organic fertilizers. The organic fertilizers falling onto the screening mechanism may still have lumps, and these lumpy organic fertilizers are likely to block the sieve mesh during screening, affecting the progress of the screening work. Utility Model Content

[0004] This application provides an organic fertilizer screening device for fully drying the fertilizers to be screened.

[0005] This application provides an organic fertilizer screening device, including a screening box with a screening mechanism inside. The upper and lower ends of the screening box are respectively provided with a feeding cylinder and a discharging cylinder. A drying mechanism is provided on one side of the screening box, and it also includes a receiving cylinder connected to the other side of the screening box and communicating with the screening box;

[0006] A first sieve mesh is inclinedly installed at a position in the screening box corresponding to the bottom of the receiving cylinder, and the lower end of the first sieve mesh is placed on the bottom plate of the receiving cylinder; when the fertilizer falls on the first sieve mesh, part of the fertilizer can slide along the first sieve mesh towards the receiving cylinder;

[0007] A conveying mechanism is provided in the receiving cylinder, and the conveying mechanism can convey the organic fertilizers sent into the receiving cylinder by the first sieve mesh upward and make the fertilizers fall back onto the first sieve mesh again.

[0008] Further, the conveying mechanism includes an outer cylinder, a rotating shaft, a motor, a spiral blade, a feed inlet, and a discharge outlet. The upper and lower sides of the outer cylinder are connected to the top wall and the bottom wall of the receiving cylinder. The spiral blade is sleeved on the rotating shaft and rotates around the rotating shaft. The outer edge of the spiral blade is close to the inner wall of the outer cylinder. The motor is connected to the outer shell of the receiving cylinder and is used to drive the rotating shaft to rotate. The discharge outlet and the feed inlet are sequentially arranged on the side wall of the outer cylinder from top to bottom and both face above the first sieve.

[0009] Further, a guide pipe is connected to the discharge outlet. The guide pipe inclines downward and extends towards the first sieve.

[0010] Further, a guiding groove is provided at one end of the first sieve close to the receiving cylinder. The large opening end of the guiding groove is connected to the first sieve, and the small opening end of the guiding groove is connected to the feed inlet.

[0011] Further, a first material distributing plate and a second material distributing plate are sequentially arranged on the inner wall of the feed cylinder in the vertical direction. The first material distributing plate and the second material distributing plate are both inclined downward on the inner walls of a pair of opposite sides of the feed cylinder and there is a certain distance between the first material distributing plate and the second material distributing plate.

[0012] Further, a deodorizing pipe is connected to the back plate of the screening box. An active adsorption layer is provided inside the deodorizing pipe.

[0013] Further, the screening mechanism includes a second sieve and a vibrator. The second sieve is movably connected to the screening box, and the vibrator is connected to the second sieve.

[0014] Compared with the prior art, the beneficial effects of the present application are embodied in:

[0015] In this application, by setting up a first sieve and a conveying mechanism, after the organic fertilizer enters the screening box from the feeding cylinder, it is first dried by a drying mechanism. The dried organic fertilizer is in granular form. The granular organic fertilizer passes through the first sieve and falls into the screening mechanism for screening. The organic fertilizer that is not thoroughly dried forms lumps, and under the action of gravity, it slides along the first sieve into the accommodating cylinder. The conveying mechanism conveys it from the bottom of the accommodating cylinder back above the first sieve and then discharges the organic fertilizer. When these lumped organic fertilizers fall onto the first sieve from a certain height, on the one hand, they will be dried again by hot air. After drying, the fertilizer will flake off from the lumps and pass through the first sieve. The fertilizer that is still not dried will strike the first sieve and continue to slide along the first sieve into the accommodating cylinder, and then be conveyed upward by the conveying mechanism above the first sieve and discharged after being dried by the drying mechanism. During this process, the organic fertilizer can be thoroughly dried and then screened, facilitating the organic fertilizer to enter the screening mechanism in granular form for screening, and avoiding the lumped organic fertilizer from blocking the mesh holes of the sieve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 is a schematic diagram of the overall structure of the present application;

[0018] Figure 2 is the present application Figure 1 is an enlarged schematic diagram of part A in the present application;

[0019] Figure 3 is a schematic diagram of part of the structure of the present application;

[0020] Figure 4 is a schematic cross-sectional structure diagram of the deodorizing mechanism of the present application;

[0021] Figure 5 is a schematic diagram of the structure of the screening mechanism of the present application;

[0022] DESCRIPTION OF THE REFERENCE NUMERALS:

[0023] 1: Screening box; 2: Feeding tube; 3: Discharging tube; 4: Drying mechanism; 5: Screening mechanism; 51: Second sieve; 52: Vibrator; 6: First sieve; 7: Receiving cylinder; 8: Conveying mechanism; 81: Outer cylinder; 82: Rotating shaft; 83: Spiral blade; 84: Discharge port; 85: Feed port; 86: Motor; 9: First baffle plate; 10: Second baffle plate; 11: Deodorizing pipe; 12: Activated adsorption layer; 13: Guide pipe; 14: Guide groove; 15: Spring. Detailed implementation manners

[0024] To make the objectives, technical solutions and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below. Apparently, the described embodiments are some but not all of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts also belong to the scope of protection of this application.

[0025] Refer to Figures 1 - 5 , the organic fertilizer screening device provided by this application includes a screening box 1 with a screening mechanism 5 inside. A feeding tube 2 and a discharging tube 3 are respectively arranged at the upper and lower ends of the screening box 1. A drying mechanism 4 is arranged on one side of the screening box 1. The device of this application further includes a receiving cylinder 7 connected to the other side of the screening box 1 and communicating with the screening box 1;

[0026] A first sieve 6 is inclinedly installed at a position in the screening box 1 corresponding to the bottom of the receiving cylinder 7, and the lower position of the first sieve 6 is placed on the bottom plate of the receiving cylinder 7; when the fertilizer falls on the first sieve 6, part of the fertilizer can slide along the first sieve 6 towards the receiving cylinder 7;

[0027] A conveying mechanism 8 is arranged in the receiving cylinder 7. The conveying mechanism 8 can convey the organic fertilizer sent into the receiving cylinder 7 by the first sieve 6 upwards and make the fertilizer fall back onto the first sieve 6 again.

[0028] In the above embodiments, when the existing organic fertilizer screening device screens organic fertilizer, a screening box 1 is provided. Feed cylinders 2 and discharge cylinders 3 are respectively provided at the upper and lower ends of the screening box 1. Multiple layers of sieve meshes are provided in the screening box 1 to screen the organic fertilizer. To prevent the mesh holes of the sieve mesh from being blocked when screening the caked organic fertilizer due to moisture, a drying mechanism 4 is provided on one side of the screening box 1. Hot air is introduced into the screening box 1 through the drying mechanism 4 to dry the organic fertilizer conveyed into the feed cylinder 2, and then the dried organic fertilizer is screened. However, when the existing drying mechanism 4 dries the organic fertilizer, since the general drying mechanism 4 is arranged below the feed cylinder 2 of the screening device, when the organic fertilizer enters the screening box 1 from the feed cylinder 2, the organic fertilizer is only dried by the hot air of the drying mechanism 4 during the process of falling from the feed cylinder 2 into the screening mechanism 5. During this process, the contact time between the organic fertilizer and the hot air blown out by the hot air mechanism is short, and the fertilizer cannot be evenly and thoroughly dried. There are still un-dried fertilizer lumps, and these lumps will fall down and enter the screening mechanism 5 for screening. During screening, the lumpy fertilizer is larger in diameter than the sieve mesh, and it is easy to block the mesh holes of the sieve mesh, affecting the screening effect.

[0029] In this application, a conveying mechanism 8 is arranged in the accommodating cylinder 7 of the screening device. An inclined first sieve mesh 6 is provided at a position corresponding to the bottom plate of the accommodating cylinder 7 in the screening box 1, and the lower end of the first sieve mesh 6 is placed on the bottom plate of the accommodating cylinder. After the organic fertilizer enters the screening box 1 from the feed cylinder 2, it is first dried by the drying mechanism 4. Part of the organic fertilizer is thoroughly dried, and the dried organic fertilizer is in granular form. The granular organic fertilizer passes through the first sieve mesh 6 and falls into the screening mechanism 5 for screening. The un-thoroughly dried organic fertilizer lumps are large in particle size and difficult to pass through the first sieve mesh 6. They will slide down along the first sieve mesh 6 under the action of gravity into the accommodating cylinder 7, and are re-conveyed by the conveying mechanism 8 from the bottom of the accommodating cylinder 7 to above the first sieve mesh 6 and then discharged. When these lumpy organic fertilizers fall on the first sieve mesh 6 from a certain height, on the one hand, they will be dried again by the hot air. After drying, the fertilizer will peel off from the lumps and pass through the first sieve mesh 6. The still un-dried fertilizer will strike on the first sieve mesh 6 and continue to slide along the first sieve mesh 6 into the accommodating cylinder 7, repeating the above operations until it is completely dried.

[0030] During this process, the screening device of this application can dry the organic fertilizer more fully and then screen the organic fertilizer, facilitating the organic fertilizer to enter the screening mechanism in granular form for screening, and avoiding the mesh holes of the sieve mesh being blocked by the lumpy organic fertilizer.

[0031] Further, refer to Figures 1 - 2, the conveying mechanism 8 includes an outer cylinder 81, a rotating shaft 82, a motor 86, a spiral blade 83, a feed inlet 85 and a discharge outlet 84. The upper and lower sides of the outer cylinder 81 are connected to the top wall and the bottom wall of the accommodating cylinder 7. The spiral blade 83 is sleeved on the rotating shaft 82 and rotates around the rotating shaft 82. The outer edge of the spiral blade 83 is close to the inner wall of the outer cylinder 81. The motor 86 is connected to the outer shell of the accommodating cylinder 7 and is used to drive the rotating shaft 82 to rotate. The discharge outlet 84 and the feed inlet 85 are successively arranged on the side wall of the outer cylinder 81 from top to bottom and both face above the first screen 6.

[0032] In a possible implementation manner, during the specific use process, the organic fertilizer with lumps rolls from the first screen 6 to the feed inlet 85 of the conveying mechanism 8. The rotating shaft 82 of the conveying mechanism 8 rotates under the action of the motor 86, driving the spiral blade 83 to rotate (the conveying mechanism 8 in this application is similar to a screw conveyor in the prior art). When the spiral blade 83 rotates, it adheres to the inner wall of the outer cylinder 81 and conveys the organic fertilizer upward along the inner wall of the outer cylinder 81 of the conveying mechanism 8 until it reaches the discharge outlet 84 of the conveying mechanism 8. Then the organic fertilizer falls along the discharge outlet 84 of the conveying mechanism 8. During the falling process, the organic fertilizer passes through the drying mechanism 4 again and is dried, improving the drying effect on the organic fertilizer.

[0033] Further, referring to Figures 1 - 2 , a guiding groove 14 is provided at one end of the first screen 6 close to the accommodating cylinder 7. The large opening end of the guiding groove 14 is connected to the first screen 6, and the small opening end of the guiding groove 14 is connected to the feed inlet 85.

[0034] In the above embodiments, the guiding groove 14 can play a role of gathering and guiding the organic fertilizer sliding on the first screen 6, ensuring that the organic fertilizer on the first screen 6 can flow into the feed inlet 85 along the guiding groove 14.

[0035] Further, referring to Figures 1 - 2 , a guide pipe 13 is connected to the discharge outlet 84. The guide pipe 13 is inclined downward and extends towards the first screen 6.

[0036] In a possible implementation manner, by setting the guide pipe 13, the organic fertilizer from the conveying mechanism 8 is conveyed to above the first screen 6 near the drying mechanism 4 through the guide pipe 13. The hot air blown out by the drying mechanism 4 just blows on the guide pipe 13, which can increase the contact time between the hot air blown out by the drying mechanism 4 and the guide pipe 13 and further increase the drying efficiency.

[0037] Further, referring to Figure 1, along the vertical direction on the inner wall of the feeding cylinder 2, a first material distribution plate 9 and a second material distribution plate 10 are provided. The first material distribution plate 9 and the second material distribution plate 10 are respectively arranged obliquely downward on the inner walls of a pair of opposite sides of the feeding cylinder, and there is a certain distance between the first material distribution plate 9 and the second material distribution plate 10.

[0038] In a possible implementation manner, when the organic fertilizer is conveyed into the feeding cylinder 2, after passing through the first material distribution plate 9 and the second material distribution plate 10, due to the inclined settings of the first material distribution plate 9 and the second material distribution plate 10 and the height difference between them, it can achieve the dispersion and diversion of the organic fertilizer into the feeding cylinder 2, making the organic fertilizer entering the screening box 1 at one time relatively uniform, so that the organic fertilizer can be fully dried in the screening box 1.

[0039] Furthermore, referring to Figure 3 and Figure 4 , a deodorizing pipe 11 is connected to the back plate of the screening box 1, and an active adsorption layer 12 is provided inside the deodorizing pipe 11.

[0040] In a possible implementation manner, when the organic fertilizer is being screened, due to its own characteristics, including human feces, manure, biogas fertilizer, etc., dust and malodorous waste gas may be generated during the production process, and corresponding treatment is required. In this application, a deodorizing pipe 11 is connected to the screening box 1, and the air in the screening box 1 is sucked out through the deodorizing pipe 11 by an external suction device (such as a suction fan). The active adsorption layer 12 placed in the deodorizing pipe 11 can remove the odor in the gas, providing a relatively comfortable working environment for the staff.

[0041] Furthermore, referring to Figure 4 , the screening mechanism 5 includes a second screen 51 and a vibrator 52. The second screen 51 is movably connected to the screening box 1, and a vibrator 52 is connected to the second screen 51.

[0042] In a possible implementation, both side walls of the second sieve 51 are connected to the inner wall of the screening box 1 through springs 15. The length of the springs 15 is such that the side walls of the second sieve 51 are as close as possible to the inner wall of the screening box 1 without hindering the vibration of the second sieve 51. Multiple springs 15 can be provided on each side wall of the second sieve 51 to ensure the stability of the connection between the second sieve 51 and the screening box 1. After the organic fertilizer falls onto the second sieve 51, the vibrator 52 is started, and the second sieve 51 vibrates. The organic fertilizer larger than the aperture of the second sieve 51 remains on the second sieve 51. After the screening is completed, the organic fertilizer on the second sieve 51 is collected, or a collection groove is opened on the side wall at the connection between the screening box 1 and the second sieve 51 to collect the organic fertilizer on the second sieve 51. Since the improvement point of this application is not on how to perform detailed screening of the organic fertilizer, in actual manufacturing, existing screening devices can be referred to, and the specific content will not be elaborated. The organic fertilizer smaller than the aperture of the second sieve 51 passes through the second sieve 51 and is screened out, realizing the screening of the organic fertilizer. In addition, the number of the second sieves 51 can be selected according to actual applications. For example, three sieves with different apertures can be provided to screen the organic fertilizer in different sizes, similar to the vibrating screening device in the prior art.

[0043] The specific process of the organic fertilizer screening device of this application in actual application is as follows: The organic fertilizer is conveyed into the screening box 1 through the feed cylinder 2. The organic fertilizer is scattered by the first baffle 9 and the second baffle 10 in the feed cylinder 2. After the organic fertilizer enters the screening box 1 from the feed cylinder 2, the hot air blown by the drying mechanism 4 dries part of the organic fertilizer. The dried organic fertilizer is in the form of dispersed particles and falls from the first sieve 6 into the screening mechanism 5 for screening; the other part of the organic fertilizer that is not completely dried is in the form of lumps and rolls from the first sieve 6 into the conveying mechanism 8. After being conveyed by the conveying mechanism 8 to a position corresponding to the air outlet of the drying mechanism 4 at the lower end of the discharge cylinder 3, it is dried again. And during the process of falling from the conveying mechanism 8 onto the first sieve 6, the organic fertilizer hits the first sieve 6 again and is scattered.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, rather than to limit them; although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An organic fertilizer screening device, comprising a screening box (1) with a screening mechanism (5) inside, wherein a feed cylinder (2) and a discharge cylinder (3) are respectively provided at the upper and lower ends of the screening box (1), and a drying mechanism (4) is provided on one side of the screening box (1), characterized in that: It also includes a receiving cylinder (7) connected to the other side of the screening box (1) and communicating with the screening box (1); A first screen (6) is obliquely installed at a position corresponding to the bottom of the accommodating cylinder (7) in the screening box (1), and the lower part of the first screen (6) is placed on the bottom plate of the accommodating cylinder (7); when fertilizer falls on the first screen (6), part of the fertilizer can slide along the first screen (6) toward the accommodating cylinder (7); A conveying mechanism (8) is provided in the containing cylinder (7), and the conveying mechanism (8) is capable of conveying the organic fertilizer sent into the containing cylinder (7) by the first screen (6) upwards and causing the fertilizer to fall back onto the first screen (6).

2. The organic fertilizer screening device according to claim 1, characterized in that: The conveying mechanism (8) comprises an outer cylinder (81), a rotating shaft (82), a motor (86), a spiral blade (83), a feed port (85) and a discharge port (84); the upper and lower sides of the outer cylinder (81) are connected to the top wall and the bottom wall of the accommodating cylinder (7); the spiral blade (83) is sleeved on the rotating shaft (82) and rotates around the rotating shaft (82); the outer edge of the spiral blade (83) is close to the inner wall of the outer cylinder (81); the motor (86) is connected to the outer shell of the accommodating cylinder (7) and is used to drive the rotating shaft (82) to rotate; the discharge port (84) and the feed port (85) are sequentially opened on the side wall of the outer cylinder (81) from top to bottom, and both face above the first screen (6).

3. The organic fertilizer screening device according to claim 2, characterized in that: The material outlet (84) is connected to a material guide pipe (13), and the material guide pipe (13) is inclined downward and extends towards the first screen (6).

4. The organic fertilizer screening device according to claim 2, characterized in that: A guide groove (14) is provided at one end of the first screen (6) close to the accommodating cylinder (7), the large opening end of the guide groove (14) is connected to the first screen (6), and the small opening end of the guide groove (14) is connected to the feed port (85).

5. The organic fertilizer screening device according to claim 1, characterized in that: A first material dividing plate (9) and a second material dividing plate (10) are arranged in sequence on the inner wall of the feed barrel (2) in the vertical direction. The first material dividing plate (9) and the second material dividing plate (10) are arranged on the inner wall of one opposite side of the feed barrel (2) and are inclined downward, and a certain distance is spaced between the first material dividing plate (9) and the second material dividing plate (10).

6. The organic fertilizer screening device according to claim 1, characterized in that: A deodorizing pipe (11) is connected to the back plate of the screening box (1), and an active adsorption layer (12) is provided inside the deodorizing pipe (11).

7. The organic fertilizer screening device according to any one of claims 1 to 6, characterized in that: The screening mechanism (5) comprises a second screen (51) and a vibrator (52); the second screen (51) is connected to the screening box (1) via a spring; and the vibrator (52) is connected to the second screen (51).

Images