Composite organic bacterial fertilizer production line

Abstract

The utility model relates to the field of organic bacterial fertilizer production lines, in particular to a composite organic bacterial fertilizer production line. The technical problem is that a composite organic bacterial fertilizer production line in the prior art is generally difficult to quickly dry a fertilizer at low temperature and with large air volume, and the number of microorganisms is difficult to reduce in the drying process. According to the technical scheme, the composite organic bacterial fertilizer production line comprises a supporting assembly; the device further comprises a crushing assembly, a ventilation assembly, a first drying assembly, a second drying assembly and an extrusion granulation assembly. According to the utility model, the organic fertilizer is put into the extruding and granulating assembly, the extruding and granulating assembly is started to extrude and granulate the organic fertilizer, then the first drying assembly is started to supply air into the ventilation assembly, the second drying assembly is started to supply air into the crushing assembly, and the crushing assembly is started to quickly crush the extruded and granulated material; and then the crushed materials are conveyed out and screened through the supporting assembly, and the technical problem is solved.

Description

Technical Field

[0001] The utility model belongs to the field of organic bacterial fertilizer production lines, and in particular relates to a composite organic bacterial fertilizer production line. Background Art

[0002] As a new type of fertilizer, organic bacterial fertilizer has received widespread attention and promotion due to its advantages such as biological activity, comprehensive nutrition and environmental friendliness. The production line of compound organic bacterial fertilizer usually includes production equipment such as granulation, drying, cooling, screening and packaging. However, the production line of compound organic bacterial fertilizer in the existing technology usually finds it difficult to use low temperature and high air volume to quickly dry the fertilizer. The drying process is difficult to avoid the reduction of the number of microorganisms, which needs further improvement. Utility Model Content

[0003] In order to overcome the problem that the composite organic fertilizer production line in the prior art is usually difficult to use low temperature and large air volume to quickly dry the fertilizer, the drying process is difficult to avoid the problem of reduced number of microorganisms.

[0004] The technical solution of the utility model is: a composite organic fertilizer production line, comprising a support assembly; also comprising a crushing assembly, a ventilation assembly, a first drying assembly, a second drying assembly and an extrusion granulation assembly; the upper end of the support assembly is provided with a crushing assembly for crushing; the upper end of the crushing assembly is provided with a ventilation assembly; the right end of the ventilation assembly is provided with a first drying assembly for drying; the left end of the crushing assembly is provided with a second drying assembly for drying; the upper end of the ventilation assembly is provided with an extrusion granulation assembly for granulation.

[0005] Preferably, when in use, the organic fertilizer is put into the extrusion granulation component, the extrusion granulation component is turned on to extrude and granulate the organic fertilizer, and then the first drying component is turned on to supply air to the ventilation component, the second drying component is turned on to supply air to the crushing component, and the crushing component is turned on to quickly crush the extruded granulated material, and then the crushed material is transported out and screened through the supporting component, which solves the problem that the composite organic fertilizer production line in the prior art is usually difficult to use low temperature and large air volume to quickly dry the fertilizer, and the reduction in the number of microorganisms is difficult to avoid during the drying process.

[0006] Preferably, the support assembly includes a support plate, a belt conveyor, support legs, a supporting frame, a collecting box, an inclined plate and a screening trough; a belt conveyor is provided inside the support plate; two supporting legs are fixedly connected to the left and right ends of the support plate; the upper ends of the supporting legs are fixedly connected to the supporting frame; the front end of the support plate is movably provided with a collecting box; the front end of the support plate is fixedly connected to the inclined plate; the upper and lower ends of the inclined plate are penetrated by evenly distributed screening troughs; the rear end of the supporting frame is fixedly connected to a supporting block; the upper end of the supporting block is fixedly connected to a liquid nitrogen generator. When the material is crushed and falls on the conveyor belt of the belt conveyor, turning on the belt conveyor can send the material forward to the inclined surface of the inclined plate, and then the small particles of material will fall into the inside of the collecting box through the screening trough, which is convenient for screening the material.

[0007] Preferably, the crushing assembly includes a first fixed frame, a first mounting plate, a first ventilation hole, a first motor, a rotating shaft and a cutting knife; the upper end of the supporting frame is fixedly connected to the first fixed frame; the right end of the first fixed frame is fixedly connected to the first mounting plate in a through-type manner; the right end of the first mounting plate is penetrated by a first ventilation hole evenly distributed; the front end of the first fixed frame is fixedly connected to the first motor; the rotating shaft is rotatably mounted on the front and rear ends of the inner wall of the first fixed frame; the rear end of the output shaft of the first motor is fixedly connected to the front end of the rotating shaft; the outer wall of the rotating shaft is fixedly connected to the evenly distributed cutting knives, and the first motor is turned on to rotate the rotating shaft, and the cutting knife can be used to crush and cut the material falling into the first fixed frame.

[0008] Preferably, the ventilation assembly includes a second fixed frame, a second mounting plate, a second ventilation hole and a first groove body; the upper end of the first fixed frame is fixedly connected to the second fixed frame; the left end of the second fixed frame is fixedly connected to the second mounting plate in a through-type manner; the left and right ends of the second mounting plate are penetrated by evenly distributed second ventilation holes; the right end of the second fixed frame is penetrated by a first groove body, and the setting of the first groove body facilitates ventilation of the interior of the second fixed frame.

[0009] Preferably, the first drying component includes a first ventilation body, a second ventilation body, a first bracket, a first fan, a first cover body and a first handle; the first ventilation body is fixedly connected to the right end of the second fixed frame; the interior of the first ventilation body and the interior of the first trough body are interconnected; the upper end of the first ventilation body is fixedly connected to the second ventilation body; the upper part of the inner wall of the second ventilation body is fixedly connected to the evenly distributed first bracket; the first fan is fixedly connected to the first bracket; the upper end of the second ventilation body is movably provided with the first cover body; the upper end of the first cover body is fixedly connected to the first handle. When in use, the first fan will be turned on to generate wind to pass through the first ventilation body and the first trough body into the interior of the second fixed frame, so that the material can be quickly blown dry.

[0010] Preferably, the second drying component includes a third ventilation body, a fourth ventilation body, a second bracket, a second fan, a second cover body and a second handle; the left end of the first fixed frame is fixedly connected with the third ventilation body; the upper end of the third ventilation body is fixedly connected to the fourth ventilation body; the upper part of the inner wall of the fourth ventilation body is fixedly connected with the evenly distributed second bracket; the second bracket is fixedly connected to the second fan; the upper end of the fourth ventilation body is movably provided with a second cover body; the upper end of the second cover body is fixedly connected to the second handle; the tube body on the air outlet port of the liquid nitrogen generator passes through the outer wall of the third ventilation body and extends to the inner wall of the third ventilation body, and the cold air enters the interior of the third ventilation body through the tube body on the liquid nitrogen generator, and then the second fan is turned on to form wind force to enter the interior of the first fixed frame, which can improve the blowing and drying effect of the material, and can ensure a certain low temperature, thereby avoiding the reduction in the number of microorganisms caused by excessive temperature.

[0011] Preferably, the extrusion granulation assembly includes a first U-shaped plate, an electric cylinder, a moving block, a second U-shaped plate, a first granulation roller, a second granulation roller, a second motor, a third motor, a limiting groove and a limiting block; the upper end of the second fixed frame is fixedly connected to the first U-shaped plate; the front and rear ends of the first U-shaped plate are fixedly connected to the electric cylinder; the moving block is fixedly connected to the output shaft of the electric cylinder; the second U-shaped plate is fixedly connected between the two moving blocks; the top surfaces of the second U-shaped plate and the first U-shaped plate are both "U"-shaped and arranged facing each other; the first granulation roller is rotatably mounted on the front and rear ends of the inner wall of the first U-shaped plate; the second granulation roller is rotatably mounted on the front and rear ends of the inner wall of the second U-shaped plate; the rear end of the first U-shaped plate is fixedly connected to the second motor; the output shaft of the second motor is fixedly connected to the It is connected to the rear end of the first granulating roller; the rear end of the second U-shaped plate is fixedly connected to the third motor; the output shaft of the third motor is fixedly connected to the rear end of the second granulating roller; two limiting grooves symmetrical about the center of the first U-shaped plate are provided at one end of the first U-shaped plate close to the second U-shaped plate; two limiting blocks are fixedly connected to one end of the second U-shaped plate close to the first U-shaped plate; the limiting blocks are adapted to the limiting grooves; the lower end surface of the second U-shaped plate is fitted with the upper end surface of the second fixed frame, and the position of the moving block is adjusted by turning on the electric cylinder to adjust the position of the second granulating roller relative to the first granulating roller, and the second motor is turned on to drive the first granulating roller to rotate, and the third motor is turned on to drive the second granulating roller to rotate, so that the fertilizer can be extruded and granulated, which is easy to use.

[0012] Beneficial effects of the utility model:

[0013] 1. The organic fertilizer is put into the extrusion granulation component, the extrusion granulation component is turned on to extrude and granulate the organic fertilizer, and then the first drying component is turned on to supply air to the ventilation component, the second drying component is turned on to supply air to the crushing component, and the crushing component is turned on to quickly crush the extruded granulated material. The crushed material is then transported out and screened through the support component, thereby solving the problem that the composite organic fertilizer production line in the prior art is usually difficult to use low temperature and large air volume to quickly dry the fertilizer, and the number of microorganisms is difficult to avoid reducing during the drying process;

[0014] 2. When the material falls on the conveyor belt of the belt conveyor after being crushed, the belt conveyor can be turned on to convey the material forward to the inclined surface of the inclined plate, and then the small particles of material will fall into the inside of the collection box through the screening slot, which is convenient for screening the material. The first motor is turned on to rotate the shaft, and the cutting knife can be used to crush and cut the material falling into the inside of the first fixed frame. The setting of the first slot body facilitates ventilation inside the second fixed frame.

[0015] 3. By turning on the first fan to generate wind that passes through the first ventilation body and the first trough body into the interior of the second fixed frame, the material can be quickly blown and dried. The cold air passes through the tube on the liquid nitrogen generator into the interior of the third ventilation body, and then the second fan is turned on to generate wind that enters the interior of the first fixed frame. This can improve the blowing and drying effect of the material and ensure a certain low temperature, thereby avoiding the reduction of the number of microorganisms caused by excessive temperature.

[0016] 4. By turning on the electric cylinder to adjust the position of the moving block, the position of the second granulating roller relative to the first granulating roller can be debugged. Turning on the second motor to drive the first granulating roller to rotate, and turning on the third motor to drive the second granulating roller to rotate, the fertilizer can be squeezed and granulated, which is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a three-dimensional structural diagram of a composite organic bacterial fertilizer production line of the utility model;

[0018] Figure 2 Shown is a three-dimensional structural diagram of a support component and a crushing component of a composite organic bacterial fertilizer production line of the present invention;

[0019] Figure 3 Shown is a three-dimensional structural diagram of a crushing component and a ventilation component of a composite organic bacterial fertilizer production line of the present utility model;

[0020] Figure 4 Shown is a schematic diagram of the three-dimensional disassembled structure of the first drying component of a composite organic bacterial fertilizer production line of the present utility model;

[0021] Figure 5Shown is a schematic diagram of the three-dimensional disassembled structure of the second drying component of a composite organic bacterial fertilizer production line of the present invention;

[0022] Figure 6 Shown is a three-dimensional structural schematic diagram of an extrusion granulation component of a composite organic bacterial fertilizer production line of the present invention.

[0023] The marks in the accompanying drawings are: 1. Support assembly; 101. Support plate; 102. Belt conveyor; 103. Support leg; 104. Carrying frame; 105. Collection box; 106. Inclined plate; 107. Screening trough; 108. Carrying block; 109. Liquid nitrogen generator; 2. Crushing assembly; 201. First fixed frame; 202. First mounting plate; 203. First ventilation hole; 204. First motor; 205. Rotating shaft; 206. Cutting knife; 3. Ventilation assembly; 301. Second fixed frame; 302. Second mounting plate; 303. Second ventilation hole; 304. First trough; 4. First drying assembly; 401. First ventilation body; 402, second ventilation body; 403, first bracket; 404, first fan; 405, first cover; 406, first handle; 5, second drying component; 501, third ventilation body; 502, fourth ventilation body; 503, second bracket; 504, second fan; 505, second cover; 506, second handle; 6, extrusion granulation component; 601, first U-shaped plate; 602, electric cylinder; 603, moving block; 604, second U-shaped plate; 605, first granulation roller; 606, second granulation roller; 607, second motor; 608, third motor; 609, limit groove; 610, limit block. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] See also Figure 1 The utility model provides an embodiment: a composite organic fertilizer production line, comprising a support assembly 1; further comprising a crushing assembly 2, a ventilation assembly 3, a first drying assembly 4, a second drying assembly 5 and an extrusion granulation assembly 6; the upper end of the support assembly 1 is provided with a crushing assembly 2 for crushing; the upper end of the crushing assembly 2 is provided with a ventilation assembly 3; the right end of the ventilation assembly 3 is provided with a first drying assembly 4 for drying; the left end of the crushing assembly 2 is provided with a second drying assembly 5 for drying; the upper end of the ventilation assembly 3 is provided with an extrusion granulation assembly 6 for granulation.

[0026] See also Figure 2In this embodiment, the support assembly 1 includes a support plate 101, a conveyor belt 102, support legs 103, a carrying frame 104, a collection box 105, an inclined plate 106 and a screening slot 107; the conveyor belt 102 is provided inside the support plate 101; two support legs 103 are fixedly connected to the left and right ends of the support plate 101; the upper end of the support leg 103 is fixedly connected to the carrying frame 104; the front end of the support plate 101 is movably provided with a collection box 105; the front end of the support plate 101 is fixedly connected to the inclined plate 106; the upper and lower ends of the inclined plate 106 are penetrated by evenly distributed screening slots 107; the rear end of the carrying frame 104 is fixedly connected to a carrying block 108; the upper end of the carrying block 108 is fixedly connected to a liquid nitrogen generator 109 ; The crushing assembly 2 includes a first fixed frame 201, a first mounting plate 202, a first ventilation hole 203, a first motor 204, a rotating shaft 205 and a cutting knife 206; the upper end of the supporting frame 104 is fixedly connected to the first fixed frame 201; the right end of the first fixed frame 201 is fixedly connected to the first mounting plate 202 in a through-type manner; the right end of the first mounting plate 202 is penetrated by a uniformly distributed first ventilation holes 203; the front end of the first fixed frame 201 is fixedly connected to the first motor 204; the rotating shaft 205 is rotatably mounted on the front and rear ends of the inner wall of the first fixed frame 201; the rear end of the output shaft of the first motor 204 is fixedly connected to the front end of the rotating shaft 205; the outer wall of the rotating shaft 205 is fixedly connected to the uniformly distributed cutting knives 206.

[0027] See also Figure 3 In this embodiment, the ventilation assembly 3 includes a second fixed frame 301, a second mounting plate 302, second ventilation holes 303 and a first slot 304; the upper end of the first fixed frame 201 is fixedly connected to the second fixed frame 301; the left end of the second fixed frame 301 is fixedly connected to the second mounting plate 302 in a through-type manner; the left and right ends of the second mounting plate 302 are penetrated by uniformly distributed second ventilation holes 303; the right end of the second fixed frame 301 is penetrated by the first slot 304.

[0028] See also Figure 4 In this embodiment, the first drying component 4 includes a first ventilation body 401, a second ventilation body 402, a first bracket 403, a first fan 404, a first cover 405 and a first handle 406; the right end of the second fixed frame 301 is fixedly connected to the first ventilation body 401; the interior of the first ventilation body 401 and the interior of the first groove body 304 are interconnected; the upper end of the first ventilation body 401 is fixedly connected to the second ventilation body 402; the upper part of the inner wall of the second ventilation body 402 is fixedly connected to the evenly distributed first brackets 403; the first fan 404 is fixedly connected to the first bracket 403; the upper end of the second ventilation body 402 is movably provided with a first cover 405; the upper end of the first cover 405 is fixedly connected to the first handle 406.

[0029] See also Figure 5In this embodiment, the second drying component 5 includes a third ventilating body 501, a fourth ventilating body 502, a second bracket 503, a second fan 504, a second cover 505 and a second handle 506; the left end of the first fixed frame 201 is fixedly connected with the third ventilating body 501 in a through-type manner; the upper end of the third ventilating body 501 is fixedly connected to the fourth ventilating body 502; the upper part of the inner wall of the fourth ventilating body 502 is fixedly connected with evenly distributed second brackets 503; the second fan 504 is fixedly connected to the second bracket 503; the upper end of the fourth ventilating body 502 is movably provided with a second cover 505; the upper end of the second cover 505 is fixedly connected to the second handle 506; the tube body on the gas outlet port of the liquid nitrogen generator 109 passes through the outer wall of the third ventilating body 501 and extends to the inner wall of the third ventilating body 501.

[0030] See also Figure 6 In this embodiment, the extrusion granulation assembly 6 includes a first U-shaped plate 601, an electric cylinder 602, a moving block 603, a second U-shaped plate 604, a first granulation roller 605, a second granulation roller 606, a second motor 607, a third motor 608, a limiting groove 609 and a limiting block 610; the upper end of the second fixed frame 301 is fixedly connected to the first U-shaped plate 601; the front and rear ends of the first U-shaped plate 601 are fixedly connected to the electric cylinder 602; the moving block 603 is fixedly connected to the output shaft of the electric cylinder 602; the second U-shaped plate 604 is fixedly connected between the two moving blocks 603; the top surfaces of the second U-shaped plate 604 and the first U-shaped plate 601 are both "U"-shaped and arranged facing each other; the first granulation roller 605 is rotatably installed on the front and rear ends of the inner wall of the first U-shaped plate 601; The second granulation roller 606 is rotatably installed at the front and rear ends of the inner wall of the second U-shaped plate 604; the rear end of the first U-shaped plate 601 is fixedly connected to the second motor 607; the output shaft of the second motor 607 is fixedly connected to the rear end of the first granulation roller 605; the rear end of the second U-shaped plate 604 is fixedly connected to the third motor 608; the output shaft of the third motor 608 is fixedly connected to the rear end of the second granulation roller 606; the end of the first U-shaped plate 601 close to the second U-shaped plate 604 is provided with two limiting grooves 609 symmetrical about the center of the first U-shaped plate 601; the end of the second U-shaped plate 604 close to the first U-shaped plate 601 is fixedly connected to two limiting blocks 610; the limiting blocks 610 are adapted to the limiting grooves 609; the lower end surface of the second U-shaped plate 604 is in contact with the upper end surface of the second fixed frame 301.

[0031] During operation, first, the electric cylinder 602 is turned on to adjust the position of the moving block 603, and the position of the second granulating roller 606 relative to the first granulating roller 605 is debugged. After reaching the appropriate position, the second motor 607 is turned on to drive the first granulating roller 605 to rotate, and the third motor 608 is turned on to drive the second granulating roller 606 to rotate, so that the fertilizer can be squeezed and granulated;

[0032] Next, the first fan 404 is turned on to generate wind that passes through the first ventilation body 401 and the first slot 304 and enters the interior of the second fixing frame 301, so as to quickly blow and dry the material.

[0033] Afterwards, the cold air is turned on to enter the interior of the third ventilation body 501 through the tube on the outlet port of the liquid nitrogen generator 109, and then the second fan 504 is turned on to generate wind force to enter the interior of the first fixed frame 201, which can improve the drying effect of the material and ensure a certain low temperature, thereby avoiding the reduction of the number of microorganisms caused by excessive temperature.

[0034] Then, the first motor 204 is turned on to rotate the rotating shaft 205, and the cutting knife 206 can be used to crush and cut the material falling into the first fixed frame 201. When the material is crushed, it falls on the conveyor belt of the belt conveyor 102. The belt conveyor 102 is turned on to send the material forward to the inclined surface of the inclined plate 106, and then the small particles of material will pass through the screening trough 107 and fall into the inside of the collecting box 105, which is convenient for screening the material.

[0035] Through the above steps, when in use, the organic fertilizer is put into the extrusion granulation component 6, the extrusion granulation component 6 is opened to extrude and granulate the organic fertilizer, and then the first drying component 4 is opened to supply air into the ventilation component 3, and the second drying component 5 is opened to supply air into the crushing component 2, and the crushing component 2 is opened to quickly crush the extruded granulated material, and then the crushed material is transported out and screened by the supporting component 1, which solves the problem that the composite organic fertilizer production line in the prior art is usually difficult to use low temperature and large air volume to quickly dry the fertilizer, and the drying process is difficult to avoid the problem of reducing the number of microorganisms.

[0036] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.

Claims

1. A composite organic fertilizer production line, comprising a support assembly (1); characterized in that: The invention also includes a crushing component (2), a ventilation component (3), a first drying component (4), a second drying component (5) and an extrusion granulation component (6); the upper end of the support component (1) is provided with a crushing component (2) for crushing; the upper end of the crushing component (2) is provided with a ventilation component (3); the right end of the ventilation component (3) is provided with a first drying component (4) for drying; the left end of the crushing component (2) is provided with a second drying component (5) for drying; the upper end of the ventilation component (3) is provided with an extrusion granulation component (6) for granulation, and the support component ( 1) comprising a support plate (101), a belt conveyor (102), a support leg (103), a bearing frame (104), a collection box (105), an inclined plate (106) and a screening trough (107); the support plate (101) is provided with a belt conveyor (102); the left and right ends of the support plate (101) are fixedly connected to two support legs (103); the upper ends of the support legs (103) are fixedly connected to the bearing frame (104); the front end of the support plate (101) is movably provided with a collection box (105); the front end of the support plate (101) is fixedly connected to the inclined plate (106); The upper and lower ends of the inclined plate (106) are penetrated by screening grooves (107) evenly distributed; the rear end of the carrying frame (104) is fixedly connected to a carrying block (108); the upper end of the carrying block (108) is fixedly connected to a liquid nitrogen generator (109), and the second drying assembly (5) includes a third ventilation body (501), a fourth ventilation body (502), a second bracket (503), a second fan (504), a second cover (505) and a second handle (506); the left end of the first fixed frame (201) is penetrated by the third ventilation body (501); The upper end of the third ventilation body (501) is fixedly connected to a fourth ventilation body (502); the upper portion of the inner wall of the fourth ventilation body (502) is fixedly connected to evenly distributed second brackets (503); the second bracket (503) is fixedly connected to a second fan (504); the upper end of the fourth ventilation body (502) is movably provided with a second cover (505); the upper end of the second cover (505) is fixedly connected to a second handle (506); the tube on the gas outlet port of the liquid nitrogen generator (109) passes through the outer wall of the third ventilation body (501) and extends to the inner wall of the third ventilation body (501).

2. A composite organic fertilizer production line according to claim 1, characterized in that: The crushing assembly (2) comprises a first fixed frame (201), a first mounting plate (202), a first ventilation hole (203), a first motor (204), a rotating shaft (205) and a cutting knife (206); the upper end of the supporting frame (104) is fixedly connected to the first fixed frame (201); the right end of the first fixed frame (201) is fixedly connected to the first mounting plate (202); the right end of the first mounting plate (202) is penetrated and provided with evenly distributed first ventilation holes (203); the front end of the first fixed frame (201) is fixedly connected to the first motor (204); the rotating shaft (205) is rotatably mounted at the front and rear ends of the inner wall of the first fixed frame (201); the rear end of the output shaft of the first motor (204) is fixedly connected to the front end of the rotating shaft (205); and the outer wall of the rotating shaft (205) is fixedly connected to evenly distributed cutting knives (206).

3. A composite organic fertilizer production line according to claim 2, characterized in that: The ventilation assembly (3) comprises a second fixing frame (301), a second mounting plate (302), second ventilation holes (303) and a first slot (304); the upper end of the first fixing frame (201) is fixedly connected to the second fixing frame (301); the left end of the second fixing frame (301) is fixedly connected to the second mounting plate (302); the left and right ends of the second mounting plate (302) are penetrated by second ventilation holes (303) evenly distributed; the right end of the second fixing frame (301) is penetrated by the first slot (304).

4. A composite organic fertilizer production line according to claim 3, characterized in that: The first drying component (4) includes a first ventilation body (401), a second ventilation body (402), a first bracket (403), a first fan (404), a first cover (405) and a first handle (406); the right end of the second fixed frame (301) is fixedly connected to the first ventilation body (401); the interior of the first ventilation body (401) and the interior of the first trough (304) are interconnected; the upper end of the first ventilation body (401) is fixedly connected to the second ventilation body (402); the upper part of the inner wall of the second ventilation body (402) is fixedly connected to the evenly distributed first brackets (403); the first fan (404) is fixedly connected to the first bracket (403); the upper end of the second ventilation body (402) is movably provided with a first cover (405); the upper end of the first cover (405) is fixedly connected to the first handle (406).

5. The composite organic fertilizer production line according to claim 3, characterized in that: The extrusion granulation assembly (6) comprises a first U-shaped plate (601), an electric cylinder (602), a moving block (603), a second U-shaped plate (604), a first granulation roller (605), a second granulation roller (606), a second motor (607), a third motor (608), a limiting groove (609) and a limiting block (610); the upper end of the second fixed frame (301) is fixedly connected to the first U-shaped plate (601); the front and rear ends of the first U-shaped plate (601) are fixedly connected to the electric cylinder (602); the moving block (603) is fixedly connected to the output shaft of the electric cylinder (602); the second U-shaped plate (604) is fixedly connected between the two moving blocks (603); the top surfaces of the second U-shaped plate (604) and the first U-shaped plate (601) are both "U"-shaped and arranged facing each other; the first granulation roller (605) is rotatably mounted on the front and rear ends of the inner wall of the first U-shaped plate (601); The second granulation roller (606) is rotatably mounted on the front and rear ends of the inner wall of the mold plate (604); the rear end of the first U-shaped plate (601) is fixedly connected to the second motor (607); the output shaft of the second motor (607) is fixedly connected to the rear end of the first granulation roller (605); the rear end of the second U-shaped plate (604) is fixedly connected to the third motor (608); the output shaft of the third motor (608) is fixedly connected to the rear end of the second granulation roller (606); one end of the first U-shaped plate (601) close to the second U-shaped plate (604) is provided with two limiting grooves (609) symmetrical about the center of the first U-shaped plate (601); one end of the second U-shaped plate (604) close to the first U-shaped plate (601) is fixedly connected to two limiting blocks (610); the limiting blocks (610) are adapted to the limiting grooves (609); the lower end surface of the second U-shaped plate (604) is in contact with the upper end surface of the second fixing frame (301).

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