Preparation method and device of straw composite filler for saline-alkali soil blind ditch
By crushing and molding straw, combined with a motor-driven mixing and extrusion device, the problems of high cost and uneven mixing of fillers in saline-alkali land management have been solved, realizing the preparation of efficient and low-cost blind drain fillers and promoting the comprehensive utilization of straw.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- FARMLAND IRRIGATION RES INST CHINESE ACAD OF AGRI SCI
- Filing Date
- 2026-05-09
- Publication Date
- 2026-06-16
AI Technical Summary
Traditional methods for treating saline-alkali land are costly and time-consuming. Existing blind drain fillers have limited resources and poor improvement effects. Crop straw is not effectively utilized, and there are problems such as uneven mixing and low cutting efficiency during the treatment process.
The straw is crushed into segments or granules using a preparation device and mixed with gypsum, sulfur, phosphogypsum, etc. Then, it is formed into cylindrical granules under pressure and temperature using a ring die or flat die pellet mill. Combined with a motor-driven stirring and extrusion device, uniform mixing and efficient cutting are ensured.
This study achieved efficient preparation of filler material for blind drains in saline-alkali land, improved mixing uniformity and cutting efficiency, reduced costs, promoted the comprehensive utilization of straw, and enhanced the improvement effect of blind drains.
Smart Images
Figure CN122207481A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of straw composite filler technology, specifically to a method and apparatus for preparing straw composite filler for blind ditches in saline-alkali land. Background Technology
[0002] Traditional methods for saline-alkali land management, such as flood irrigation and chemical amendments, suffer from drawbacks including high costs, long cycles, and the potential for secondary environmental pollution. Furthermore, they fail to adequately consider the balance and sustainability of the soil ecosystem. Meanwhile, agricultural straw, a massive waste product, is produced in vast quantities. Previously, large quantities of straw were burned or discarded, causing severe environmental pollution, damaging the rural ecological environment, and wasting valuable renewable resources. How to achieve comprehensive utilization of straw and turn waste into treasure has become an urgent problem to solve. Blind drains, as important facilities for drainage improvement in saline-alkali land, directly affect drainage and improvement effects through the performance of their filler material. Existing blind drain fillers suffer from high costs, limited resources, and poor improvement effects. Developing new, efficient, environmentally friendly, and low-cost blind drain fillers is of significant practical importance. This study selects common crop straws such as cotton, corn, and wheat as the main raw materials, pre-treats them to remove impurities, and then air-dries or bakes them until the moisture content is below 10%. The auxiliary materials selected include bentonite, binder (such as calcium lignosulfonate or sodium silicate), and composite catalyst (containing elements such as cerium, titanium, iron, and copper in a specific ratio). The pre-treated straw is pulverized using a pulverizer, passing through a 100-mesh sieve to obtain straw powder. The straw powder and bentonite are weighed according to the following proportions: straw 60-80 wt%, bentonite 10-20 wt%, binder 1-10 wt%, and composite catalyst 0.5-3 wt%. These are then thoroughly mixed in a mixing device. The weighed binder and composite catalyst are added, and the mixture is stirred again until homogeneous. The mixed material is then pressed into cylindrical or spherical particles with a diameter of 5-12 mm using a mold, thus obtaining the straw composite filler.
[0003] Straw is prone to shifting during processing if it is not cut in time, and there are also problems such as uneven mixing and long stirring time when the straw is crushed and directly poured in. Summary of the Invention
[0004] To solve the above technical problems, the present invention is achieved through the following technical solution: a method and apparatus for preparing straw composite filler for blind ditches in saline-alkali land, comprising the following steps: Step 1: Collect straw from major crops such as rice, wheat, and corn, and remove debris such as stones, plastics, and metals. Step 2: Use the preparation device to break the dried straw into segments or granules. This step aims to increase the specific surface area of the straw, which facilitates the subsequent modification reaction and makes it easier to mix evenly with the materials. Step 3: Mix the crushed or carbonized straw with powders or solutions such as gypsum, sulfur, and phosphogypsum, and use a ring die pellet mill or flat die pellet mill to extrude the mixture into cylindrical pellets under certain pressure and temperature.
[0005] Preferably, the preparation device includes an extrusion outer tube, a feeding connector connected to the side of the extrusion outer tube, a stirring device fixedly connected inside the extrusion outer tube, a feeding device fixedly connected to the top of the extrusion outer tube, a guide pipe fixedly connected to the top of the extrusion outer tube at a position on one side of the feeding device, a discharge device fixedly connected to the side of the extrusion outer tube, and a roller fixedly connected to the side of the extrusion outer tube at the feeding connector. The feeding device extends into the interior of the stirring device and is rotatably connected to the stirring device. The stirring device includes a motor, a motor bracket is fixedly connected to the top of the motor, a rotating base is fixedly connected to the drive shaft of the motor, a forward blade is fixedly connected to the side of the rotating base, a reverse blade is fixedly connected to the side of the forward blade, an extrusion blade is fixedly connected to the side of the rotating base, the side of the forward blade is fixedly connected to the side of the extrusion blade, and the end of the motor bracket away from the motor is fixedly connected to the inside of the extrusion outer tube.
[0006] Preferably, the extrusion blade includes a spiral blade with a circular sliding hole at the top and a rectangular sliding hole on the side. The side of the spiral blade is fixedly connected to the side of the rotating base, the side of the spiral blade is fixedly connected to the side of the forward blade, and the side of the spiral blade is fixedly connected to the side of the reverse blade. The straw is introduced into the extrusion outer tube through the feed pipe. The motor is started, and the rotation of the motor drives the rotating base to rotate. The rotation of the rotating base drives the forward and reverse blades to rotate, which in turn shreds the straw introduced through the feed pipe. At the same time, liquid is introduced through the feed joint and feed device, and the straw mixture is stirred and mixed. While the rotating base is rotating, the rotation of the spiral blade drives the raw material to be extruded inside the decompression device. After being compressed and formed by the decompression device, the straw is driven by the decompression device to fall off in chunks. Under the action of the roller, the extrusion outer tube is positioned at the top of the blind drain, so that the blind drain can be directly filled after forming, which facilitates direct filling.
[0007] Preferably, the feeding device includes a conveying pipe, the top of which is connected to a connecting pipe, the top of which is connected to a water inlet connector, and the bottom of which is connected to a water outlet pipe. The bottom of the inner wall of the water outlet pipe has an outlet. The side of the conveying pipe contacts the side of a circular sliding hole. The water outlet pipe is positioned at the center of the inner wall of the rectangular sliding hole. The top of the connecting pipe is fixedly connected to the top of the inner wall of the extrusion outer pipe. The bottom of the water inlet connector penetrates the top of the extrusion outer pipe and is fixedly connected to it. Liquid is introduced through the water inlet connector into the interior of the connecting pipe and then into the conveying pipe. Under hydraulic pressure, it is sprayed out from the outlet along the water outlet pipe. This allows the liquid raw materials to be directly mixed during straw crushing, and to be mixed at the mixing center during straw crushing. This increases the degree of mixing between the raw materials. Furthermore, the downward force of the water outlet pipe and outlet prevents straw from clogging the outlet, facilitating mixing between the raw materials and improving the uniformity of the mixture, thus facilitating extrusion molding.
[0008] Preferably, the guide tube includes an inclined tube, the top of which is connected to a tapered tube, the top of which is connected to a feed tube, a pressing plate is fixedly connected to the inner wall of the inclined tube, and the bottom of the inclined tube is connected to the top of the extrusion outer tube.
[0009] Preferably, the pressing plate includes a fixed plate, a rotating plate rotatably connected to the bottom of the fixed plate, and a spring plate fixedly connected to the side of the rotating plate. The top of the spring plate contacts the top of the inner wall of the inclined tube, and the top of the fixed plate is fixedly connected to the top of the inner wall of the inclined tube. The straw is introduced through the feed pipe and pushed by the guide of the conical tube to move the rotating plate. The thrust generated by the straw on the rotating plate causes the rotating plate to rotate along the bottom of the fixed plate. The rotation of the rotating plate causes the spring plate to generate elastic force, which in turn causes the rotating plate to rotate back, thereby squeezing the straw. This facilitates the pressing of the straw during crushing and cutting, thus preventing problems such as straw flying around. The inclined guide of the inclined tube makes it easier for the straw to face the cutting direction of the forward and reverse blades, thereby improving the cutting efficiency. At the same time, the combined action of the forward and reverse blades achieves a cutting action similar to scissors. The oblique setting facilitates sliding cutting of the side of the straw, thereby improving the cutting efficiency.
[0010] Preferably, the unloading device includes an unloading bracket, the top of which is fixedly connected to the fixed end of a telescopic rod, the movable end of which is fixedly connected to an arc-shaped unloading plate, the inner wall of which is slidably connected to an extrusion base, the side of which is fixedly connected to an adjustment component, and the side of the unloading bracket is fixedly connected to the side of the extrusion outer tube.
[0011] Preferably, the adjusting assembly includes a sliding screw, a sliding seat slidably connected to the side of the sliding screw, a stud fixedly connected to the side of the sliding screw, an adjusting sleeve threadedly connected to the side of the stud, a spring fixedly connected to the side of the adjusting sleeve, the end of the spring away from the adjusting sleeve contacting the side of the sliding seat, the side of the sliding seat fixedly connected to the inner wall side of the unloading bracket, and the side of the extrusion base fixedly connected to the side of the sliding screw. The raw material is extruded on the side of the extrusion base by the pushing of the spiral blades. The sliding screw slides along the side of the sliding seat and rotates along the side of the sliding seat at the same time, thereby driving the raw material to rotate, which facilitates extrusion molding. The thrust of the spring on the sliding screw is adjusted by adjusting the rotation of the screw sleeve on the stud, thereby adjusting the compaction degree. After extrusion is completed, the telescopic rod is activated. The movable end of the telescopic rod drives the arc-shaped stripper plate to move. The arc-shaped stripper plate scrapes the side of the extrusion base, thereby automatically stripping the raw material and directly pushing the raw material into the blind groove to complete the filling.
[0012] This invention provides a method for preparing straw composite filler for blind drains in saline-alkali land. It has the following beneficial effects: 1. The method for preparing straw composite filler for blind drains in saline-alkali land includes a starting motor. Straw is introduced into the inner cavity of the extrusion outer tube through a feed pipe. The motor is started, and its rotation drives the rotating base to rotate. The rotating base, in turn, drives the forward and reverse blades to rotate, which shred the straw introduced through the feed pipe. Simultaneously, liquid is introduced through the feeding joint and feeding device, and the straw mixture is stirred and mixed. While the rotating base is rotating, the spiral blades drive the material to be extruded inside the depressurization device. After being compressed and formed by the depressurization device, the straw is driven by the depressurization device to fall off in chunks. Driven by rollers, the extrusion outer tube is positioned at the top of the blind drain, allowing for direct filling of the blind drain after molding, thus facilitating direct filling.
[0013] 2. The method for preparing straw composite filler for blind drains in saline-alkali land includes a connecting pipe. Liquid is introduced into the connecting pipe through the inlet connector and then into the conveying pipe. Under hydraulic pressure, it is sprayed out from the outlet along the outlet pipe, allowing the liquid raw materials to be directly mixed during straw crushing. This mixing at the mixing center during straw crushing increases the degree of mixing between the raw materials. The downward force of the outlet pipe and outlet prevents straw from clogging the outlet, thus facilitating mixing between the raw materials and improving the uniformity of mixing, which is conducive to extrusion molding.
[0014] 3. The method for preparing straw composite filler for blind drains in saline-alkali land includes a tapered tube. Straw is introduced through the feed pipe and, guided by the tapered tube, pushes a rotating plate to move. The thrust generated by the straw on the rotating plate causes the rotating plate to rotate along the bottom of the fixed plate. The rotation of the rotating plate causes the spring plate to generate elastic force, which in turn causes the rotating plate to rotate back, thereby squeezing the straw. This facilitates the pressing of the straw during crushing and cutting, thus preventing problems such as straw flying around. The inclined guide tube allows the straw to face the cutting direction of the forward and reverse blades, thereby improving the cutting efficiency. At the same time, the combined action of the forward and reverse blades achieves a shearing effect similar to scissors. The oblique setting also facilitates sliding cutting of the sides of the straw, thereby improving the cutting efficiency.
[0015] 4. The method for preparing straw composite filler for blind drains in saline-alkali land includes an extrusion base. The raw material is extruded onto the side of the extrusion base by the push of a spiral blade. The extrusion base causes a sliding screw to slide along the side of the sliding seat. Simultaneously, the sliding screw rotates along the side of the sliding seat, causing the raw material to rotate, thus facilitating extrusion molding. The force of the spring on the sliding screw is adjusted by changing the rotation of the screw sleeve on the stud, thereby adjusting the compaction density. After extrusion, a telescopic rod is activated. The movable end of the telescopic rod moves an arc-shaped stripper plate, which scrapes the side of the extrusion base, automatically stripping the raw material and directly pushing it into the blind drain to complete the filling process. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the preparation device of the present invention; Figure 2 This is a schematic diagram of the internal structure of the preparation device of the present invention; Figure 3 This is a schematic diagram of the stirring device of the present invention; Figure 4 This is a schematic diagram of the extrusion blade structure of the present invention; Figure 5 This is a schematic diagram of the feeding device structure of the present invention; Figure 6 This is a schematic diagram of the material guide tube structure of the present invention; Figure 7 This is a schematic diagram of the pressing plate structure of the present invention; Figure 8 This is a schematic diagram of the material removal device of the present invention; Figure 9 This is a schematic diagram of the adjusted component structure for the present invention.
[0017] In the diagram: 1. Extrusion outer tube; 2. Feed connector; 3. Mixing device; 4. Feeding device; 5. Guide pipe; 6. Discharge device; 7. Roller; 301. Motor; 302. Motor bracket; 303. Rotating base; 304. Forward blade; 305. Reverse blade; 306. Extrusion blade; 3061. Spiral blade; 3062. Circular sliding hole; 3063. Rectangular sliding hole; 401. Conveying pipe; 402. Connecting pipe; 403. Water inlet connector; 404. Water outlet pipe; 405, water outlet; 501, inclined pipe; 502, tapered pipe; 503, feed pipe; 504, pressing plate; 5041, fixed plate; 5042, rotating plate; 5043, spring plate; 601, unloading bracket; 602, telescopic rod; 603, arc-shaped unloading plate; 604, extrusion base; 605, adjusting assembly; 6051, sliding screw; 6052, sliding seat; 6053, stud; 6054, adjusting screw sleeve; 6055, spring. Detailed Implementation
[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0019] For the first embodiment, please refer to... Figures 1-4 This invention provides a technical solution: a method for preparing straw composite filler for blind drains in saline-alkali land, comprising the following steps: Step 1: Collect straw from major crops such as rice, wheat, and corn, and remove debris such as stones, plastics, and metals. Step 2: Using a preparation device, the dried straw is broken into segments or granules of 1-5 cm. This step aims to increase the specific surface area of the straw, facilitating subsequent modification reactions and making it easier to mix evenly with other materials. Step 3: Mix the crushed or carbonized straw with powders or solutions such as gypsum, sulfur, and phosphogypsum, and use a ring die pellet mill or flat die pellet mill to extrude the mixture into cylindrical pellets under certain pressure and temperature.
[0020] The preparation device includes an extrusion outer tube 1, a feed connector 2 connected to the side of the extrusion outer tube 1, a stirring device 3 fixedly connected inside the extrusion outer tube 1, a feed device 4 fixedly connected to the top of the extrusion outer tube 1, a guide pipe 5 fixedly connected to the top of the extrusion outer tube 1 on one side of the feed device 4, a discharge device 6 fixedly connected to the side of the extrusion outer tube 1, and a roller 7 fixedly connected to the side of the extrusion outer tube 1 on the feed connector 2. The feed device 4 extends into the interior of the stirring device 3 and is rotatably connected to the stirring device 3. The stirring device 3 includes a motor 301, a motor bracket 302 fixedly connected to the top of the motor 301, a rotating base 303 fixedly connected to the drive shaft of the motor 301, a forward blade 304 fixedly connected to the side of the rotating base 303, a reverse blade 305 fixedly connected to the side of the forward blade 304, an extrusion blade 306 fixedly connected to the side of the rotating base 303, the side of the forward blade 304 and the side of the extrusion blade 306 fixedly connected, and the end of the motor bracket 302 away from the motor 301 fixedly connected to the inside of the extrusion outer tube 1.
[0021] The extrusion blade 306 includes a spiral blade 3061. A circular sliding hole 3062 is provided on the top of the spiral blade 3061, and a rectangular sliding hole 3063 is provided on the side of the spiral blade 3061. The side of the spiral blade 3061 is fixedly connected to the side of the rotating base 303, the side of the spiral blade 3061 is fixedly connected to the side of the forward blade 304, and the side of the spiral blade 3061 is fixedly connected to the side of the reverse blade 305.
[0022] Straw is introduced into the extrusion outer tube 1 through the feed pipe 5. The motor 301 is started, and the rotation of the motor 301 drives the rotating base 303 to rotate. The rotation of the rotating base 303 drives the forward blade 304 and the reverse blade 305 to rotate. The forward blade 304 and the reverse blade 305 rotate to chop the straw introduced through the feed pipe 5. At the same time as chopping, liquid is introduced through the feed joint 2 and the feed device 4. The straw mixture is stirred and mixed. While the rotating base 303 is rotating, the rotation of the spiral blade 3061 drives the raw material to be extruded inside the depressurization device 6. After being compressed and formed by the depressurization device 6, the straw is driven by the depressurization device 6 to fall off in chunks. Under the action of the roller 7, the extrusion outer tube 1 is moved to the top of the blind drain, so that the blind drain can be directly filled after forming, which facilitates direct filling.
[0023] Second embodiment, please refer to Figures 1-5Based on the first embodiment, the present invention provides a technical solution: the feeding device 4 includes a feeding pipe 401, the top of the feeding pipe 401 is connected to a connecting pipe 402, the top of the connecting pipe 402 is connected to a water inlet connector 403, the bottom of the feeding pipe 401 is connected to a water outlet pipe 404, the bottom of the inner wall of the water outlet pipe 404 is provided with a water outlet 405, the side of the feeding pipe 401 contacts the side of the circular sliding hole 3062, the water outlet pipe 404 is located at the center of the inner wall of the rectangular sliding hole 3063, the top of the connecting pipe 402 is fixedly connected to the top of the inner wall of the extrusion outer pipe 1, and the bottom of the water inlet connector 403 penetrates through the top of the extrusion outer pipe 1 and is fixedly connected to the extrusion outer pipe 1.
[0024] The liquid is introduced into the connecting pipe 402 through the water inlet connector 403 and then into the conveying pipe 401. Under the action of hydraulic pressure, it is sprayed out from the water outlet 405 along the water outlet pipe 404, so that the liquid raw materials are directly mixed during straw crushing and are mixed in the mixing center during straw crushing, thereby increasing the degree of mixing between raw materials. Under the downward action of the water outlet pipe 404 and the water outlet 405, the straw is prevented from clogging the water outlet 405, thus facilitating the mixing between raw materials and improving the uniformity of mixing, which is conducive to extrusion molding.
[0025] Third embodiment, please refer to Figures 1-7 Based on the second embodiment, the present invention provides a technical solution: the guide tube 5 includes an inclined tube 501, the top of the inclined tube 501 is connected to a tapered tube 502, the top of the tapered tube 502 is connected to a feed tube 503, the inner wall of the inclined tube 501 is fixedly connected to a pressing plate 504, and the bottom of the inclined tube 501 is connected to the top of the extrusion outer tube 1.
[0026] The pressing plate 504 includes a fixed plate 5041, a rotating plate 5042 rotatably connected to the bottom of the fixed plate 5041, a spring plate 5043 fixedly connected to the side of the rotating plate 5042, the top of the spring plate 5043 contacting the top of the inner wall of the inclined tube 501, and the top of the fixed plate 5041 fixedly connected to the top of the inner wall of the inclined tube 501.
[0027] Straw is introduced through the feed pipe 503 and, guided by the tapered pipe 502, pushes the rotating plate 5042 to move. The thrust generated by the straw on the rotating plate 5042 causes the rotating plate 5042 to rotate along the bottom of the fixed plate 5041. The rotation of the rotating plate 5042 causes the spring plate 5043 to generate elastic force, which in turn causes the rotating plate 5042 to rotate back, thereby squeezing the straw. This facilitates the pressing of the straw during crushing and cutting, thus preventing problems such as straw flying around. The inclined guide of the inclined pipe 501 makes it easier for the straw to face the cutting direction of the forward blade 304 and the reverse blade 305, thereby improving the cutting efficiency. At the same time, the combined action of the forward blade 304 and the reverse blade 305 achieves a cutting action similar to scissors. The inclined setting also facilitates sliding cutting of the side of the straw, thereby improving the cutting efficiency.
[0028] For the fourth embodiment, please refer to [link / reference]. Figures 1-9 Based on the third embodiment, the present invention provides a technical solution: the unloading device 6 includes an unloading bracket 601, the top of the unloading bracket 601 is fixedly connected to the fixed end of the telescopic rod 602, the movable end of the telescopic rod 602 is fixedly connected to the arc-shaped unloading plate 603, the inner wall of the arc-shaped unloading plate 603 is slidably connected to the extrusion base 604, the side of the extrusion base 604 is fixedly connected to the adjustment component 605, and the side of the unloading bracket 601 is fixedly connected to the side of the extrusion outer tube 1.
[0029] The adjusting assembly 605 includes a sliding screw 6051, a sliding seat 6052 that is slidably connected to the side of the sliding screw 6051, a stud 6053 that is fixedly connected to the side of the sliding screw 6051, an adjusting sleeve 6054 that is threadedly connected to the side of the stud 6053, a spring 6055 that is fixedly connected to the side of the adjusting sleeve 6054, and the end of the spring 6055 away from the adjusting sleeve 6054 that contacts the side of the sliding seat 6052. The side of the sliding seat 6052 is fixedly connected to the inner wall side of the unloading bracket 601, and the side of the extrusion base 604 is fixedly connected to the side of the sliding screw 6051.
[0030] The raw material is pushed by the spiral blade 3061 and extruded on the side of the extrusion base 604. The extrusion base 604 drives the sliding screw 6051 to slide along the side of the sliding seat 6052. While sliding along the sliding seat 6052, the sliding screw 6051 rotates along the side of the sliding seat 6052, thereby driving the raw material to rotate, which facilitates extrusion molding. By adjusting the rotation of the screw sleeve 6054 on the stud 6053, the thrust of the spring 6055 on the sliding screw 6051 is changed, thereby adjusting the compaction density. After extrusion is completed, the telescopic rod 602 is activated. The movable end of the telescopic rod 602 drives the arc-shaped stripper plate 603 to move. The arc-shaped stripper plate 603 scrapes the side of the extrusion base 604, thereby automatically stripping the raw material and directly pushing it into the blind trench to complete the filling.
[0031] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.
Claims
1. A method for preparing straw composite filler for blind drains in saline-alkali land, characterized in that: Includes the following steps: Step 1: Collect the straws of major crops such as cotton, wheat, corn, and sunflower, and remove any debris such as stones, plastic, and metal. Step 2: Use the preparation device to break the dried straw into segments or granules. This step aims to increase the specific surface area of the straw, which facilitates the subsequent modification reaction and makes it easier to mix evenly with the materials. Step 3: Mix the crushed or carbonized straw with powders or solutions such as gypsum, sulfur, and phosphogypsum, and use a ring die pellet mill or flat die pellet mill to extrude the mixture into cylindrical pellets under certain pressure and temperature.
2. The method for preparing straw composite filler for blind drains in saline-alkali land according to claim 1, characterized in that: The preparation device includes an extrusion outer tube (1), a feeding connector (2) connected to the side of the extrusion outer tube (1), a stirring device (3) fixedly connected inside the extrusion outer tube (1), a feeding device (4) fixedly connected to the top of the extrusion outer tube (1), a guide tube (5) fixedly connected to the top of the extrusion outer tube (1) on one side of the feeding device (4), a discharge device (6) fixedly connected to the side of the extrusion outer tube (1), a roller (7) fixedly connected to the side of the extrusion outer tube (1) on the feeding connector (2), and the feeding device (4) extending into the interior of the stirring device (3) and rotatably connected to the stirring device (3). The stirring device (3) includes a motor (301), a motor bracket (302) is fixedly connected to the top of the motor (301), a rotating base (303) is fixedly connected to the drive shaft of the motor (301), a forward blade (304) is fixedly connected to the side of the rotating base (303), a reverse blade (305) is fixedly connected to the side of the forward blade (304), an extrusion blade (306) is fixedly connected to the side of the rotating base (303), the side of the forward blade (304) is fixedly connected to the side of the extrusion blade (306), and the end of the motor bracket (302) away from the motor (301) is fixedly connected to the inside of the extrusion outer tube (1).
3. The method for preparing straw composite filler for blind drains in saline-alkali land according to claim 2, characterized in that: The extrusion blade (306) includes a spiral blade (3061), the top of the spiral blade (3061) is provided with a circular sliding hole (3062), the side of the spiral blade (3061) is provided with a rectangular sliding hole (3063), the side of the spiral blade (3061) is fixedly connected to the side of the rotating base (303), the side of the spiral blade (3061) is fixedly connected to the side of the forward blade (304), and the side of the spiral blade (3061) is fixedly connected to the side of the reverse blade (305).
4. The method for preparing straw composite filler for blind drains in saline-alkali land according to claim 3, characterized in that: The feeding device (4) includes a feeding pipe (401), the top of the feeding pipe (401) is connected to a connecting pipe (402), the top of the connecting pipe (402) is connected to a water inlet connector (403), the bottom of the feeding pipe (401) is connected to a water outlet pipe (404), the bottom of the inner wall of the water outlet pipe (404) is provided with a water outlet (405), the side of the feeding pipe (401) is in contact with the side of the circular sliding hole (3062), the water outlet pipe (404) is located at the center of the inner wall of the rectangular sliding hole (3063), the top of the connecting pipe (402) is fixedly connected to the top of the inner wall of the extrusion outer pipe (1), and the bottom of the water inlet connector (403) penetrates the top of the extrusion outer pipe (1) and is fixedly connected to the extrusion outer pipe (1).
5. The method for preparing straw composite filler for blind drains in saline-alkali land according to claim 2, characterized in that: The feed tube (5) includes an inclined tube (501), the top of the inclined tube (501) is connected to a tapered tube (502), the top of the tapered tube (502) is connected to a feed tube (503), a pressing plate (504) is fixedly connected to the inner wall of the inclined tube (501), and the bottom of the inclined tube (501) is connected to the top of the extrusion outer tube (1).
6. The method for preparing straw composite filler for blind drains in saline-alkali land according to claim 5, characterized in that: The pressing plate (504) includes a fixed plate (5041), a rotating plate (5042) is rotatably connected to the bottom of the fixed plate (5041), a spring plate (5043) is fixedly connected to the side of the rotating plate (5042), the top of the spring plate (5043) contacts the top of the inner wall of the inclined tube (501), and the top of the fixed plate (5041) is fixedly connected to the top of the inner wall of the inclined tube (501).
7. The method for preparing straw composite filler for blind drains in saline-alkali land according to claim 2, characterized in that: The unloading device (6) includes an unloading bracket (601), the top of which is fixedly connected to the fixed end of a telescopic rod (602), the movable end of which is fixedly connected to an arc-shaped unloading plate (603), the inner wall of which is slidably connected to an extrusion base (604), the side of which is fixedly connected to an adjustment component (605), and the side of the unloading bracket (601) is fixedly connected to the side of the extrusion outer tube (1).
8. The method for preparing straw composite filler for blind drains in saline-alkali land according to claim 7, characterized in that: The adjustment assembly (605) includes a sliding screw (6051), a sliding seat (6052) is sleeved and slidably connected to the side of the sliding screw (6051), a stud (6053) is fixedly connected to the side of the sliding screw (6051), an adjustment sleeve (6054) is sleeved and threadedly connected to the side of the stud (6053), a spring (6055) is fixedly connected to the side of the adjustment sleeve (6054), and the end of the spring (6055) away from the adjustment sleeve (6054) contacts the side of the sliding seat (6052).
9. The method for preparing straw composite filler for blind drains in saline-alkali land according to claim 8, characterized in that: The side of the sliding seat (6052) is fixedly connected to the inner wall side of the unloading bracket (601), and the side of the extrusion base (604) is fixedly connected to the side of the sliding screw (6051).