Organic fertilizer raw material processing device, working method and organic fertilizer preparation system

Abstract

The present invention provides an organic fertilizer raw material processing device, a working method, and an organic fertilizer preparation system, wherein the organic fertilizer raw material processing device includes a straw soaking tank; the straw soaking tank includes an infiltration tank, a soaking tank, a partition device, a first grid device, a discharge tank, and a third grid device; the infiltration tank, the soaking tank, and the discharge tank are connected along the material conveying direction, and the infiltration tank and the soaking tank are connected or disconnected by the rising or falling of the partition device; the first grid device is arranged in the infiltration tank, for supporting the straw and being able to flip to transport the straw to the infiltration tank; the third grid device is arranged in the soaking tank, for supporting the straw transported by the first grid device, and being able to flip to transport the straw to the discharge tank; the straw in the discharge tank is transported out. Based on the arrangement of the infiltration tank and the soaking tank, the organic fertilizer raw material processing device of the present invention divides the soaking process into two stages, which can be controlled separately to ensure that the moisture content of the raw material after soaking is more consistent.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of environmental protection equipment, and particularly relates to an organic fertilizer raw material treatment device, a working method and an organic fertilizer preparation system. BACKGROUND

[0002] The water heat cracking process for fertilizer preparation has requirements on the water content and saturation of raw materials. If dry biomass such as straw and branches is used as raw material, the raw material needs to be crushed and soaked to achieve full water saturation. In the prior art, a stirring tank is usually used for soaking the straw raw material. However, it is difficult to achieve complete soaking by using this method, and the soaking degree of the straw raw material is inconsistent, which will affect the subsequent water heat cracking reaction. The above problems need to be solved urgently. SUMMARY

[0003] In order to solve the problems in the background art, the present application provides an organic fertilizer raw material treatment device, which comprises a straw soaking pool. The straw soaking pool comprises a saturation pool, a soaking pool, a partition device, a first grid device, a discharge pool and a third grid device. The saturation pool, the soaking pool and the discharge pool are communicated along the material conveying direction, and the saturation pool and the soaking pool are communicated or not communicated by rising or falling of the partition device. The first grid device is arranged in the saturation pool and is used for supporting the straw and can be turned over to convey the straw to the soaking pool. The third grid device is arranged in the soaking pool and is used for supporting the straw conveyed by the first grid device and can be turned over to convey the straw to the discharge pool. The straw is discharged from the discharge pool.

[0004] In the organic fertilizer raw material treatment device of the present application, the communication ports of the saturation pool, the soaking pool and the discharge pool are communicated with the top end of the side wall.

[0005] In the organic fertilizer raw material treatment device of the present application, the first grid device and the third grid device convey the straw through the communication ports of the saturation pool and the soaking pool, the soaking pool and the discharge pool.

[0006] In the organic fertilizer raw material treatment device of the present application, the rotation angle range of the first grid device and the third grid device is 0-90°, which is turned over from horizontal to vertical.

[0007] In the organic fertilizer raw material treatment device of the present application, the third grid device is higher than the bottom surface of the discharge pool.

[0008] In the organic fertilizer raw material treatment device of the present application, the saturation pool and the soaking pool can be formed by a pool body with a partition wall with a height less than the height of the pool body arranged on the inner bottom surface. The communication port is above the partition wall.

[0009] In the organic fertilizer raw material processing device, the first grid of the first grid device and the third grid of the third grid device are horizontally arranged and have the same height.

[0010] In the organic fertilizer raw material processing device, the size of the first grid of the first grid device and the third grid of the third grid device is equal to or less than the size of the communication port and equal to the cross-sectional size of the soaking pool and the immersion pool.

[0011] In the organic fertilizer raw material processing device, when the first grid of the first grid device and the third grid of the third grid device are arranged in the horizontal direction, the distance from the bottom of each pool is 20-50 cm.

[0012] In the organic fertilizer raw material processing device, the side of the discharge pool is communicated with the soaking pool, and the discharge pool has a funnel structure with a large top and a small bottom, and the bottom surface of the discharge pool is higher than the bottom surface of the soaking pool; the horizontal part of the first scraper conveyor is arranged at the bottom of the discharge pool.

[0013] In the organic fertilizer raw material processing device, the third grid device includes a third grid and a third overturning power device; the third grid is arranged in the soaking pool and can be rotated towards the communication side of the discharge pool and the soaking pool; the third overturning power device is used to drive the third grid to rotate.

[0014] In the organic fertilizer raw material processing device, the third overturning power device is a winch.

[0015] In the organic fertilizer raw material processing device, the first grid device includes a first grid and a first overturning power device; the first grid is arranged in the immersion pool and divides the immersion pool into upper and lower parts, and can be arranged to rotate towards the partition device; the first overturning power device is used to drive the first grid to rotate.

[0016] In the organic fertilizer raw material processing device, the first overturning power device is a winch.

[0017] In the organic fertilizer raw material processing device, the straw soaking pool further includes a second grid device; the second grid device is arranged in the immersion pool and is used to press the material in the immersion pool below the liquid surface to maintain the immersion state.

[0018] In the organic fertilizer raw material processing device, the rotation direction of the second grid device is opposite to the rotation direction of the first grid device.

[0019] In the organic fertilizer raw material processing device, the second grid device comprises a second grid and a second overturning power device; one side of the second grid is rotationally connected to the inner wall of the soaking pool; and the second overturning power device is used to drive the first grid to rotate.

[0020] In the organic fertilizer raw material processing device, the second overturning power device is a winch.

[0021] In the organic fertilizer raw material processing device, the bottom of the soaking pool is in a tapered funnel structure.

[0022] In the organic fertilizer raw material processing device, the partition device comprises a partition and a lifting power device; the partition is arranged between the soaking pool and the soaking pool; and the lifting power device is used to drive the partition to rise or fall.

[0023] In the organic fertilizer raw material processing device, the lifting power device is a screw rod lifter.

[0024] In the organic fertilizer raw material processing device, the two sides of the partition are inserted into the side walls of the soaking pool and the soaking pool.

[0025] In the second aspect, the application further provides a working method of the above-mentioned organic fertilizer raw material processing device, which comprises the following steps:

[0026] Preparation of raw materials, overturning of the third grid to 90° to the vertical state, the first grid and the second grid remain in the horizontal state, and the partition is in the descending state;

[0027] Start feeding, put the straw raw material into the soaking pool, after the feeding is completed, rotate the third grid to press the straw raw material below the liquid level of the soaking pool, and soak;

[0028] Transportation of raw materials, after the straw raw material is soaked in the soaking pool, the third grid is rotated by 90° to the vertical state, the partition is raised, and the first grid is overturned to transport the straw raw material soaked in the soaking pool to the second grid in the soaking pool;

[0029] Soaking treatment, the raw material straw is soaked in the soaking pool, after the soaking is completed, the second grid is overturned to overturn the soaked straw to the discharge pool, and the soaking is completed.

[0030] In the third aspect, the application further provides an organic fertilizer preparation system using the above-mentioned organic fertilizer raw material processing device, which comprises an organic fertilizer raw material processing device, a first scraper conveyor, a first sludge pump, a first solid-liquid separator, a second solid-liquid separator, a hydrothermal cracking kettle, a straw pulverizer and a conveying belt.

[0031] The straw raw material after the straw pulverizer 17 is conveyed to the organic fertilizer raw material treatment device through the conveying belt, and the completed straw after soaking through the organic fertilizer raw material treatment device is conveyed to the second solid-liquid separator through the first scraper conveyor for solid-liquid separation, and the separated solid phase is conveyed to the hydrothermal cracking kettle, and the liquid phase is returned to the organic fertilizer raw material treatment device; the material at the bottom of the organic fertilizer raw material treatment device is conveyed to the first solid-liquid separator through the first sludge pump for solid-liquid separation, and the separated solid phase is conveyed to the hydrothermal cracking kettle, and the liquid phase is returned to the organic fertilizer raw material treatment device.

[0032] The beneficial effects of the present application are as follows: The organic fertilizer raw material treatment device of the present application divides the soaking process into two stages based on the setting of the infiltration pool and the soaking pool, can be controlled respectively, and based on the overturning of the first grid device and the third grid device, the residence time of the straw raw material in the pool is consistent, thereby ensuring that the moisture content of the raw material after soaking is more consistent. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a structural schematic diagram of the organic fertilizer raw material treatment device of the present application (showing the internal structure);

[0034] Figure 2 is a top view of the organic fertilizer raw material treatment device of the present application;

[0035] Figure 3 is a right view of the organic fertilizer raw material treatment device of the present application;

[0036] Figure 4 is a structural schematic diagram of the organic fertilizer raw material treatment device of the present application applied to a hydrothermal cracking organic fertilizer preparation system.

[0037] Legend: 11. Organic fertilizer raw material treatment device; 111. Infiltration pool; 112. Soaking pool; 113. Partition device; 1131. Partition; 1132. Lifting power device; 114. First grid device; 1141. First grid; 1142. First overturning power device; 115. Second grid device; 1151. Second grid; 1152. Second overturning power device; 116. Discharge pool; 117. Third grid device; 1171. Third grid; 1172. Third overturning power device; 12. First scraper conveyor; 13. First sludge pump; 14. First solid-liquid separator; 15. Second solid-liquid separator; 16. Hydrothermal cracking kettle; 17. Straw pulverizer; 18. Conveying belt. DETAILED DESCRIPTION

[0038] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative effort should fall into the scope of the present application.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application; the use herein of terms such as "comprise", "have" and "include" or variations thereof, is intended to cover the presence of successively recited items, numbers, components, ingredients or steps and / or the presence of items, numbers, components, ingredients or steps not expressly recited or the presence of one or more elements of a commonly- owned group.

[0040] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all directed to the same embodiment, or to a single alternative embodiment. It is explicitly contemplated that embodiments described herein can be combined with each other.

[0041] An organic fertilizer raw material processing device and working method according to the present application will be described in detail below with reference to the accompanying drawings.

[0042] As Figure 1As shown in the figure, the organic fertilizer raw material processing device comprises an immersion pool 111, a soaking pool 112, a partition device 113, a first grid device 114, a discharge pool 116 and a third grid device 117; the immersion pool 111, the soaking pool 112 and the discharge pool 116 are communicated along the material conveying direction (preferably, the communication openings of the immersion pool 111, the soaking pool 112 and the discharge pool 116 are communicated with the top ends of the side walls, thereby facilitating the material conveying; the immersion pool 111 and the soaking pool 112 can be formed by an internal bottom of a pool body being provided with a partition wall with a height less than that of the pool body, and the communication opening being above the partition wall; the discharge pool 116 can be formed by the soaking pool 112 being outwardly expanded from the side wall), and the immersion pool 111 and the soaking pool 112 are communicated or not communicated by the rising or falling of the partition device 113; the first grid device 114 is arranged in the immersion pool 111 and is used for supporting the straw and can be turned over to convey the straw to the soaking pool 112; the third grid device 117 is arranged in the soaking pool 112 and is used for supporting the straw conveyed by the first grid device 114 and can be turned over to convey the straw to the discharge pool 116, specifically, the first grid device 114 and the third grid device 117 convey the straw via the communication openings of the immersion pool 111 and the soaking pool 112, the soaking pool 112 and the discharge pool 116; the straw is conveyed out of the discharge pool 116; the material at the bottom of the soaking pool 112 is conveyed out (preferably, the bottom of the soaking pool 112 is in a tapered funnel structure, so as to facilitate the discharge); the organic fertilizer raw material processing device of the present application divides the soaking process into two stages based on the arrangement of the immersion pool and the soaking pool, can be controlled respectively, and makes the residence time of the straw raw material in the pool consistent based on the turning over of the first grid device and the third grid device, thereby ensuring that the moisture content of the raw material after soaking is more consistent.

[0043] In some embodiments, the rotation angle range of the first grid device 114 and the third grid device 117 is 0-90°, which is turned over from horizontal to vertical.

[0044] In some embodiments, the third grid device 117 is higher than the bottom surface of the discharge pool 116, and such arrangement is beneficial to completely turning over and conveying the material in the soaking pool 112 to the discharge pool 116.

[0045] In some embodiments, as shown in the figure, Figure 1 The first grid 1141 of the first grid device 114 and the third grid 1171 of the third grid device 117 are both horizontally arranged and have the same height. When the first grid 1141 of the first grid device 114 and the third grid 1171 of the third grid device 117 are arranged in the horizontal direction, they are 20-50 cm away from the bottom of the respective pool; thereby, the soil in the straw raw material can be separated.

[0046] In some embodiments, the size of the first grille 1141 of the first grille device 114 and the third grille 1171 of the third grille device 117 is less than or equal to the connecting port; preferably, it is equal to the size of the connecting port, so as to facilitate the transfer of straw; and, further preferably, the size of the first grille 1141 and the third grille 1171 is equal to the cross-sectional size of the infiltration tank 111 and the soaking tank 112, so as to avoid the material falling under the first grille 1141 and the third grille 1171 when dumping the straw raw material.

[0047] In some embodiments, as Figure 1 、 2 As shown in FIG3 , the side of the discharge pool 116 is connected to the immersion pool 112 and is a funnel-shaped structure with a larger top and a smaller bottom. The bottom surface of the discharge pool 116 is higher than the bottom surface of the immersion pool 112 ; the horizontal part of the first scraper conveyor 12 is arranged at the bottom of the discharge pool 116 .

[0048] In some embodiments, as Figure 1 and 2 As shown, the third grid device 117 includes a third grid 1171 (the grid size of the grid is 5mmx5mm-10mmx10mm) and a third turning power device 1172; the third grid 1171 is arranged in the soaking tank 112 and has a certain distance from the bottom of the tank, so that impurities such as soil in the straw raw material fall below the third grid 1171 during the turning and moving process, and the third grid 1171 can rotate toward the connecting side of the discharge tank 116 and the soaking tank 112, such as being rotatably connected to the inner wall of the soaking tank 112, and the rotation connection position is close to the connecting port or located in the connecting port; the third turning power device 1172 is used to drive the third grid 1171 to rotate. Specifically, the third turning power device 1172 is a winch, and the preferred number of the third turning power devices 1172 is 2, symmetrically arranged on both sides of the third grid 1171. Based on the symmetrical arrangement of the third turning power devices 1172, the consistency of the turning on both sides is better when driving the third grid 1171 to turn.

[0049] In some embodiments, as Figure 1As shown, the first grid device 114 includes a first grid 1141 (the grid size is 5mmx5mm-10mmx10mm) and a first overturning power device 1142; the first grid 1141 is arranged in the soaking pool 111 and divides the soaking pool 111 into upper and lower parts, and can be arranged to rotate towards the partition device 113, such as being rotatably connected to the inner wall of the soaking pool 111, and the rotatable connection position is close to the communication port or located in the communication port; the first overturning power device 1142 is used to drive the first grid 1141 to rotate. Specifically, the first overturning power device 1142 is a winch, and preferably the number of first overturning power devices 1142 is 2, which are symmetrically arranged on both sides of the first grid 1141. Based on the better consistency of the two sides in overturning when the first overturning power device 1142 symmetrically arranged drives the first grid 1141 to overturn.

[0050] In some embodiments, as shown in Figure 1 and 2 As shown, the straw soaking pool 11 further includes a second grid device 115; the second grid device 115 is arranged in the soaking pool 111 and is used to press the material in the soaking pool 111 below the liquid surface to maintain the soaking state.

[0051] Specifically, the rotation direction of the second grid device 115 is opposite to that of the first grid device 114. The second grid device 115 includes a second grid 1151 (the grid size is 5mmx5mm-10mmx10mm) and a second overturning power device 1152; one side of the second grid 1151 is rotatably connected to the inner wall of the soaking pool 111; the second overturning power device 1152 is used to drive the first grid 1141 to rotate. Specifically, the second overturning power device 1152 is a winch; preferably, the number of second overturning power devices 1152 is 2, which are symmetrically arranged on both sides of the second grid 1151. Based on the better consistency of the two sides in overturning when the second overturning power device 1152 symmetrically arranged drives the second grid 1151 to overturn.

[0052] In some embodiments, as shown in Figure 1 The partition device 113 includes a partition 1131 and a lifting power device 1132; the partition 1131 is arranged between the soaking pool 111 and the soaking pool 112; the lifting power device 1132 is used to drive the partition 1131 to rise or fall. The lifting power device 1132 is a lead screw lifter or a boom. The two sides of the partition 1131 are inserted into the side walls (specifically, the side wall connection part) of the soaking pool 111 and the soaking pool 112.

[0053] As shown in Figure 4As shown, a kind of organic fertilizer raw material processing device is taken in the preparation system of organic fertilizer prepared by hydrothermal cracking, including organic fertilizer raw material processing device 11, first scraper conveyor 12, first sludge pump 13, first solid-liquid separator 14, second solid-liquid separator 15, hydrothermal cracking kettle 16, straw pulverizer 17 and conveying belt 18;Straw raw material from outside is handled after passing through straw pulverizer 17 (can be respectively set up straw pulverizer and wooden raw material pulverizer, and specific according to raw material type, the pulverizer on the market can be selected) by conveying belt 18 to organic fertilizer raw material processing device 11, and the straw soaked by organic fertilizer raw material processing device 11 is transported to second solid-liquid separator 15 by first scraper conveyor 12 and is separated, and the solid phase obtained by separation is transported to hydrothermal cracking kettle 16, and the liquid phase is returned to organic fertilizer raw material processing device 11;The material at the bottom of organic fertilizer raw material processing device 11 is transported to first solid-liquid separator 145 by first sludge pump 13 and is separated, and the solid phase obtained by separation is transported to hydrothermal cracking kettle 16, and the liquid phase is returned to organic fertilizer raw material processing device 11.

[0054] The working steps of the organic fertilizer raw material processing device of the application are as follows:

[0055] Preparation of feed, the third grid 1171 of the third grid device 117 is turned to 90 ° vertical state, the first grid 1141 of the first grid device 114 remains horizontal state, the second grid 1151 of the second grid device 115 remains horizontal state, and the baffle 1131 of the baffle device 113 is in the state of isolating the infiltration pool and the soaking pool from the baffle 1131;

[0056] Start feeding, put straw raw material into the infiltration pool 111, after feeding is completed, rotate the third grid 1171 to the horizontal state, and press the straw raw material below the liquid level of the infiltration pool 111, soak for 30-60min (determine the soaking time according to the type of raw material, soak for 60min for wood, and soak for 30min for herbaceous plant);

[0057] Raw material transfer, after the straw raw material is soaked in the infiltration pool 111, the third grid 1171 is rotated by 90 ° to the vertical state, the baffle 1131 of the baffle device 113 is raised, the first grid 1141 is turned by 90 °, the straw raw material soaked in the infiltration pool 111 is turned and transported to the second grid 1151 of the second grid device 115 in the soaking pool 112, and the baffle 1131, the third grid device 117 and the first grid device 114 are reset;

[0058] Soaking treatment, the raw material straw is soaked in the soaking pool 112 for 2-4h, after soaking is completed, the second grid 1151 of the second grid device 115 is turned over, and the soaked straw is turned over to the discharge pool 116, and the soaking is completed.

[0059] When the organic fertilizer raw material processing device 11 is applied to the hydrothermal cracking organic fertilizer preparation system, the second grate 1151 is turned over, the soaked straw is turned over to the discharge pool 116 while the first scraper conveyor 12 is working, the straw raw material is conveyed to the second solid-liquid separator 15 while the soaked straw is turned over to the discharge pool 116 by the second grate device 115, the solid phase separated by the second solid-liquid separator 15 is conveyed to the hydrothermal cracking kettle 16, the liquid phase is returned to the soaking pool 111, the material at the bottom of the soaking pool 112 is conveyed to the first solid-liquid separator 14 by the first sludge pump 13, the solid phase separated by the first solid-liquid separator 14 is conveyed to the hydrothermal cracking kettle 16, the liquid phase is returned to the soaking pool 111, the soaking is completed, and the second grate device 115 is reset.

Claims

1. An organic fertilizer raw material processing device, characterized in that, Includes straw soaking pond; The straw soaking tank comprises a soaking tank (111), a soaking tank (112), a partition device (113), a first grid device (114), a discharge tank (116), and a third grid device (117); The infiltration tank (111), the soaking tank (112), and the discharge tank (116) are connected along the material conveying direction, and the infiltration tank (111) and the soaking tank (112) are connected or disconnected by raising or lowering the partition device (113); The first grid device (114) is arranged in the soaking tank (111), is used to support straw and can be turned over to transport the straw to the soaking tank (112); The third grid device (117) is provided in the soaking tank (112), and is used to support the straw transported by the first grid device (114), and is capable of turning over to transport the straw to the discharge tank (116); The straw in the discharge tank (116) is transported outward; the straw soaking tank further comprises a second grid device (115); The second grid device (115) is arranged in the infiltration tank (111) and is used to press the material in the infiltration tank (111) below the liquid surface to maintain an infiltration state.

2. The organic fertilizer raw material processing device according to claim 1, wherein The first grid (1141) of the first grid device (114) and the third grid (1171) of the third grid device (117) are both arranged horizontally and have the same height.

3. The organic fertilizer raw material processing device according to claim 1, wherein The discharge pool (116) is connected to the soaking pool (112) on its side and has a funnel-shaped structure with a larger top and a smaller bottom. The bottom surface of the discharge pool (116) is higher than the bottom surface of the soaking pool (112). The horizontal portion of the first scraper conveyor (12) is arranged at the bottom of the discharge pool (116).

4. The organic fertilizer raw material processing device according to claim 1, characterized in that, The third grid device (117) comprises a third grid (1171) and a third turning power device (1172); The third grid (1171) is disposed in the soaking tank (112) and is capable of rotating toward the side where the discharge tank (116) and the soaking tank (112) communicate with each other; The third turning power device (1172) is used to drive the third grille (1171) to rotate.

5. The organic fertilizer raw material processing device according to claim 1, characterized in that, The first grille device (114) comprises a first grille (1141) and a first turning power device (1142); The first grid (1141) is arranged in the infiltration tank (111) and divides the infiltration tank (111) into upper and lower parts, and is rotatable toward the partition device (113); The first turning power device (1142) is used to drive the first grille (1141) to rotate.

6. The organic fertilizer raw material processing device according to claim 1, characterized in that, The second grid device (115) comprises a second grid (1151) and a second turning power device (1152); One side of the second grid (1151) is rotatably connected to the inner wall of the infiltration tank (111); The second turning power device (1152) is used to drive the second grille (1151) to rotate.

7. The organic fertilizer raw material processing device according to claim 1, characterized in that, The partition device (113) includes a partition (1131) and a lifting power device (1132); The partition (1131) is located between the infiltration tank (111) and the soaking tank (112); The lifting power device (1132) is used to drive the partition (1131) to rise or fall.

8. A method for processing an organic fertilizer raw material according to any one of claims 1 to 7, characterized in that: The steps include: Prepare to feed, flip the second grid (1151) to 90 degrees to a vertical state, keep the first grid (1141) and the third grid (1171) in a horizontal state, and the partition (1131) in a lowered state; Feeding begins, and straw raw materials are added into the infiltration tank (111). After the feeding is completed, the second grid (1151) is rotated to press the straw raw materials below the liquid level of the infiltration tank (111) for soaking; Raw material transfer: after the straw raw material is soaked in the soaking tank (111), the second grid (1151) is rotated 90 degrees to a vertical state, the partition (1131) is raised, and the first grid (1141) is turned over to transport the straw raw material soaked in the soaking tank (111) to the third grid (1171) in the soaking tank (112); In the soaking process, the raw straw is soaked in the soaking tank (112). After the soaking is completed, the third grid (1171) turns over to turn the soaked straw into the discharge tank (116), and the soaking is completed.

9. An organic fertilizer preparation system using the organic fertilizer raw material processing device according to any one of claims 1 to 7, characterized in that: It comprises an organic fertilizer raw material processing device (11), a first scraper conveyor (12), a first sludge pump (13), a first solid-liquid separator (14), a second solid-liquid separator (15), a hydrothermal cracking kettle (16), a straw crusher (17) and a conveyor belt (18); After the straw raw material passes through the straw crusher (17), it is transported to the organic fertilizer raw material processing device (11) via the conveyor belt (18); the straw soaked in the organic fertilizer raw material processing device (11) is transported by the first scraper conveyor (12) to the second solid-liquid separator (15) for solid-liquid separation, and the separated solid phase is transported to the hydrothermal cracking kettle (16), and the liquid phase is refluxed to the organic fertilizer raw material processing device (11); the material at the bottom of the organic fertilizer raw material processing device (11) is transported to the first solid-liquid separator (14) through the first sludge pump (13) for solid-liquid separation, and the separated solid phase is transported to the hydrothermal cracking kettle (16), and the liquid phase is refluxed to the organic fertilizer raw material processing device (11).

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