Strawberry seedling substrate continuous fermentation preparation system and control method thereof

Abstract

This invention relates to the field of strawberry seedling substrate fermentation technology, and more particularly to a continuous fermentation preparation system and control method for strawberry seedling substrate. The system includes an extrusion unit for shaping and extruding pectin sludge from the fermentation raw materials of the strawberry seedling substrate. A conveying unit is installed on one side of the extrusion unit, a feeding unit is installed in the middle of the conveying unit, and an inclined plate and a mixing unit are installed at the other end of the conveying unit. Two conveying units are provided, each including two side plates. Multiple drive rollers are linearly and equidistantly installed between the side plates. In this invention, the moisture content of the pectin sludge is reduced by extrusion, and the pectin sludge is shaped into strips. Straw is then evenly spread between the two strips of pectin sludge. Subsequently, a double-helix mixing conveyor is used to stir the pectin sludge during the conveying process, effectively improving the uniformity of the mixture between the pectin sludge and the straw.

Description

Technical Field

[0001] This invention relates to the field of strawberry seedling substrate fermentation technology, specifically to a continuous fermentation preparation system for strawberry seedling substrate and its control method. Background Technology

[0002] The continuous fermentation preparation system for strawberry seedling substrate is a fully enclosed modular device that integrates "raw material pretreatment - continuous aerobic fermentation - online control - post-treatment": pectin sludge, straw, etc. are automatically mixed in a 3:1 ratio, dehydrated, crushed, and then sent to a constant temperature 50 ℃ tunnel fermentation chamber; multiple pH, dissolved oxygen, and temperature sensors in the chamber are linked to aeration, alkali replenishment, and bacterial agent addition, completing one continuous fermentation cycle in 20 hours; after flash drying and crushing, the fermented material is compounded with functional additives such as earthworm castings and vermiculite to produce a strawberry-specific substrate with pH 5.5–6.5 and EC < 2 mS cm⁻¹, with a daily production capacity of 20 t. The entire process requires no manual turning, achieving green, efficient, and standardized production of seedling substrate;

[0003] In the process of mixing pectin sludge and straw, the straw is difficult to move in the pectin sludge during the traditional mixing process, resulting in low uniformity of the mixture. Therefore, in order to address the above problem, a continuous fermentation preparation system for strawberry seedling substrate and its control method are proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a continuous fermentation preparation system for strawberry seedling substrate and its control method, in order to solve the problem that in the process of mixing pectin sludge and straw, the straw is difficult to move in the pectin sludge, resulting in low uniformity of the mixture.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A continuous fermentation preparation system for strawberry seedling substrate and its control method are disclosed. The system includes an extrusion unit for shaping and extruding pectin sludge from the fermentation raw materials of the strawberry seedling substrate. A conveying unit is installed on one side of the extrusion unit, a feeding unit is installed in the middle of the conveying unit, and an inclined plate and a mixing unit are installed at the other end of the conveying unit. Two conveying units are provided, each including two side plates. Multiple drive rollers are linearly and equidistantly installed between the side plates, and multiple filling plates are installed between the drive rollers to prevent material from falling between them. An inclined plate is installed between the side plates inside the upper conveying unit at the end furthest from the extrusion unit, and a bottom connecting plate is installed between the side plates inside the lower conveying unit at the end furthest from the extrusion unit. The mixing unit includes vertical plates, with extrusion rollers and slitting rollers installed between the upper inner sides of the vertical plates. Bottom rollers are installed at the bottom ends of both the extrusion rollers and the slitting rollers, and guide plates are installed between the bottom rollers. Each drive roller, extrusion roller, bottom roller, and slitting roller is driven by an independent motor.

[0007] As a further optimization of the present invention, the extrusion unit includes an extrusion box, the upper end of which has an upper feed port for feeding pectin sludge. Two fixed frames are installed side by side on one side of the extrusion box, and the upper ends of the two fixed frames are connected to a drive unit. The drive unit includes a hydraulic push rod, and the top end of the moving end of the hydraulic push rod is fixedly connected to a pressing component by bolts.

[0008] As a further optimization of the present invention, the hydraulic push rod is fixedly connected to the fixed frame, the pushing member is adapted to the inside of the extrusion box, the lateral projection of the pushing member is U-shaped, the pushing member is set at the lower end of the upper feed port, and the upper edge of the upper feed port is arc-shaped.

[0009] As a further optimization of the present invention, a molding die is installed at the other end of the extrusion box. The molding die includes a square plate. The upper and lower ends of the square plate are provided with square holes corresponding to the two conveying units. A screw is rotatably connected to the inner side of the edge of the square plate. The other end of the screw is spirally connected to the extrusion box.

[0010] As a further optimization of the present invention, the filling plate is fixedly connected to the side plates on both sides at both ends, the driving roller is rotatably connected to the side plates, and the motor installed at the top of the driving roller is fixedly connected to the side plates through the motor housing.

[0011] As a further optimization of the present invention, the feeding unit includes a bearing plate, and a distribution unit is installed on the inner side of the bearing plate; the bearing plate includes a circular plate with a central hole in the middle and a discharge port on one side of the circular plate; the distribution unit includes a distribution plate with distribution grooves evenly spaced in an annular pattern inside the distribution plate; a circular shaft is fixedly connected to the middle of the distribution plate; one end of the circular shaft is fixedly connected to the main shaft of a stepper motor; second spheres are evenly distributed in an annular pattern at the top of the circular shaft; and a striking element is installed on the upper side of the top of the circular shaft.

[0012] As a further optimization of the present invention, the striking element includes an elastic plate, a first ball is fixedly connected to the lower side of one end of the elastic plate, and the lower side of the elastic plate away from the end where the first ball is installed is fixed by welding between extrusion boxes.

[0013] As a further optimization of the present invention, the vertical projection sizes of the circular plate and the dividing plate are equal, the upper end of the circular shaft is rotatably connected to the circular plate through a central hole, and the circular plate is fixedly connected to one of the side plates located at the lower end.

[0014] As a further optimization of the present invention, the angle between the inclined plate and the bottom connecting plate is 45°, and the distance between the bottom end of the inclined plate and the bottom connecting plate is 10cm.

[0015] As a further optimization of the present invention, it includes the following steps:

[0016] I. Preparation Stage:

[0017] System startup: Turn on the main power supply of the system, check whether the power connection of each unit is normal, and ensure that the power supply to all motors, hydraulic push rods and other power equipment is stable;

[0018] Extrusion Unit: Start the hydraulic push rod to drive the pusher to perform one reciprocating motion inside the extrusion chamber, and check the fit between the pusher and the inner wall of the extrusion chamber;

[0019] Conveying unit: Start the independent motor of the drive roller to make the drive roller run unloaded, observe whether its rotation is smooth, and check whether the filling plate is secure;

[0020] Feeding unit: Start the stepper motor to make the equalizing plate rotate inside the support plate, check whether the rotation of the equalizing groove is smooth, and at the same time observe whether the elastic plate of the striking part and the first ball can work normally.

[0021] Mixing unit: Start the independent motors of the extrusion roller, bottom roller and slitting roller, run them under no-load, and check whether the fit between each roller is normal and whether the guide plate is firmly installed;

[0022] II. Raw material processing stage:

[0023] The pectin sludge from the fermentation raw materials of the strawberry seedling substrate is added to the extrusion box through the upper feed port;

[0024] Start the hydraulic pusher to push the pressing component to squeeze the pectin sludge. According to the characteristics and process requirements of the pectin sludge, set the pressure and pressing speed of the hydraulic pusher so that the pectin sludge is shaped in the extrusion box.

[0025] The extruded pectin sludge is passed through two square holes in a molding die to form a pectin sludge strip of a specific shape;

[0026] III. Transmission Phase:

[0027] After being shaped, the pectin sludge strip falls from the square hole of the molding die onto the drive rollers of the two conveying units set above and below. The motor of the drive roller is started, causing the drive roller to rotate and drive the pectin sludge strip to move towards the inclined plate. Then, it moves synchronously between the extrusion roller and the bottom roller for extrusion.

[0028] During the process of the pectin sludge strip passing through two conveying units, the feeding unit evenly sprinkles straw onto the upper part of the pectin sludge strip set at the lower end.

[0029] IV. Mixing Stage:

[0030] As the two pectin sludge strips pass under the extrusion rollers, they encapsulate the straw scattered on the upper part of the pectin sludge strips. Then, they are cut at equal intervals by the slitting rollers. The cut material falls into the double-helix mixing conveyor and is then transported to the fermentation station for fermentation, where humidity, pH value, and nutrient content are adjusted.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] 1. In this invention, by setting up an extrusion unit, a conveying unit and a mixing unit, the moisture in the pectin sludge can be reduced by extrusion, and the pectin sludge can be made into a strip shape. Then, straw is evenly spread between two strips of pectin sludge. Subsequently, the pectin sludge is stirred during the conveying process by a double helix mixing conveyor, which can effectively improve the uniformity of the mixture between the pectin sludge and the straw.

[0033] 2. In this invention, the feeding device is set up to feed the straw separately. The moisture of the straw can be supplemented by an external spraying device, which can reduce the difference in moisture content between the pectin sludge and the straw, and further improve the uniformity of subsequent mixing.

[0034] 3. In this invention, the pectin sludge and straw are stably segmented by the mixing unit, so that the pectin sludge and straw, which are set at equal distances, enter the subsequent processing equipment at the same time, thus achieving the effect of segmented mixing. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 This is a schematic diagram of the side plate mounting position structure of the present invention;

[0037] Figure 3 This is a schematic diagram of the pusher component structure of the present invention;

[0038] Figure 4 This is a schematic diagram of the molding die structure of the present invention;

[0039] Figure 5 This is a schematic diagram of the equal-division plate structure of the present invention;

[0040] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at point A in the middle;

[0041] Figure 7 This is a schematic diagram of the circular plate structure of the present invention;

[0042] Figure 8 This is a schematic diagram of the mixing unit structure of the present invention.

[0043] In the diagram: 100, extrusion unit; 110, extrusion box; 120, upper feed port; 130, fixed frame; 140, drive unit; 141, hydraulic push rod; 142, pressing component;

[0044] 150. Plastic mold; 151. Square plate; 152. Square hole; 153. Screw;

[0045] 200. Conveying unit; 210. Side plate; 220. Drive roller; 230. Filler plate; 240. Bottom connecting plate;

[0046] 300. Feeding unit;

[0047] 310. Bearing plate; 311. Round plate; 312. Center hole; 313. Feed port;

[0048] 320. Equal distribution unit; 321. Equal distribution plate; 322. Equal distribution groove;

[0049] 323, striking component; 3231, elastic plate; 3232, first sphere;

[0050] 324. Stepper motor; 325. Round shaft; 326. Second sphere;

[0051] 400. Inclined plate;

[0052] 500, Mixing unit; 510, Vertical plate; 520, Extrusion roller; 530, Bottom roller; 540, Slitting roller; 550, Guide plate. Detailed Implementation

[0053] Please see Figures 1-8 The present invention provides a technical solution:

[0054] A continuous fermentation preparation system for strawberry seedling substrate and its control method include an extrusion unit 100 for shaping and extruding pectin sludge in the fermentation raw materials of the strawberry seedling substrate. A conveying unit 200 is installed on one side of the extrusion unit 100, a feeding unit 300 is installed in the middle of the conveying unit 200, and an inclined plate 400 and a mixing unit 500 are installed at the other end of the conveying unit 200. There are two conveying units 200, each of which includes two side plates 210. A plurality of drive rollers 220 are linearly and equidistantly installed between the side plates 210. A filling plate 230 is installed between the drive rollers 220 to prevent material from falling between the drive rollers 220. Multiple units are included; an inclined plate 400 is installed between the side plates 210 inside the upper conveying unit 200 and the end away from the extrusion unit 100, and a bottom connecting plate 240 is installed between the side plates 210 inside the lower conveying unit 200 and the end away from the extrusion unit 100; the mixing unit 500 includes a vertical plate 510, and an extrusion roller 520 and a slitting roller 540 are installed between the upper inner sides of the vertical plates 510. Bottom rollers 530 are installed at the bottom ends of the extrusion rollers 520 and the slitting rollers 540, and guide plates 550 are installed between the bottom rollers 530; the drive rollers 220, extrusion rollers 520, bottom rollers 530 and slitting rollers 540 are all driven by independent motors.

[0055] As a further implementation of this solution, the extrusion unit 100 includes an extrusion box 110. The upper end of the extrusion box 110 has an upper feed port 120 for feeding pectin sludge. Two parallel fixing frames 130 are installed on one side of the extrusion box 110. The upper ends of the two fixing frames 130 are connected to a drive unit 140. The drive unit 140 includes a hydraulic push rod 141. The top of the moving end of the hydraulic push rod 141 is fixedly connected to a pressing component 142 by bolts. The fixed end of the hydraulic push rod 141 is fixedly connected to the fixing frame 130. The pressing component 142 is adapted to the interior of the extrusion box 110. The lateral projection of the pressing component 142 is U-shaped. The pressing component 142 is designed with... The upper feed inlet 120 is located at the lower end of the upper feed inlet 120. The upper edge of the upper feed inlet 120 is arc-shaped. A molding mold 150 is installed at the other end of the extrusion box 110. The molding mold 150 includes a square plate 151. The upper and lower ends of the square plate 151 are provided with square holes 152 corresponding to the two conveying units 200. A screw 153 is rotatably connected to the inner side of the edge of the square plate 151. The other end of the screw 153 is spirally connected to the extrusion box 110. Through the extrusion unit 100 set above, the pectin sludge raw material for strawberry substrate fermentation can be extruded into two strip structures. This setting, together with the feeding unit 300, makes it easy to evenly spread the straw between the pectin sludge strips.

[0056] As a further implementation of this solution, the filling plate 230 is fixedly connected to the side plates 210 on both sides at both ends, the drive roller 220 is rotatably connected to the side plates 210, and the motor installed at the top of the drive roller 220 is fixedly connected to the side plates 210 through the motor housing. With the above arrangement, the pectin sludge belt can be prevented from falling into the position between the drive rollers 220 during the conveying process.

[0057] As a further implementation of this solution, the feeding unit 300 includes a bearing plate 310, and a distribution unit 320 is installed inside the bearing plate 310. The bearing plate 310 includes a circular plate 311, with a central hole 312 in the middle and a discharge port 313 on one side. The distribution unit 320 includes a distribution plate 321, with distribution grooves 322 evenly spaced in an annular pattern inside the distribution plate 321. A circular shaft 325 is fixedly connected in the middle of the distribution plate 321. One end of the circular shaft 325 is fixedly connected to the main shaft of the stepper motor 324. Second spheres 326 are evenly distributed in an annular pattern at the top of the circular shaft 325. A striking element 323 is installed on the upper side of the top of the circular shaft 325. Through the above settings, during the feeding of straw, vibration can further ensure the uniformity of the single loading amount of straw inside the distribution groove 322.

[0058] As a further implementation of this solution, the striking component 323 includes an elastic plate 3231. A first ball 3232 is fixedly connected to the lower side of one end of the elastic plate 3231. The lower side of the elastic plate 3231 away from the first ball 3232 is fixed by welding between the extrusion boxes 110. Through the above arrangement, the stability of the striking component 323 during the striking process can be further improved.

[0059] As a further implementation of this solution, the vertical projection sizes of the circular plate 311 and the equalizing plate 321 are equal. The upper end of the circular shaft 325 is rotatably connected to the circular plate 311 through the middle hole 312. The circular plate 311 is fixedly connected to one of the side plates 210 at the lower end. Through the above arrangement, the circular plate 311 can be positioned, and the equalizing plate 321 can be assisted in feeding materials evenly.

[0060] As a further implementation of this solution, the angle between the inclined plate 400 and the bottom connecting plate 240 is 45°, and the distance between the bottom end of the inclined plate 400 and the bottom connecting plate 240 is 10cm. With the above settings, the two pectin sludge belts can be stably pressed together.

[0061] As a further implementation of this solution, the technical solution includes the following steps:

[0062] 1. Preparation stage:

[0063] System startup: Turn on the main power supply of the system, check whether the power connection of each unit is normal, and ensure that the power supply to all motors, hydraulic push rods and other power equipment is stable;

[0064] Extrusion unit: Start the hydraulic push rod 141 to drive the pusher 142 to perform one reciprocating motion in the extrusion box 110, and check the compatibility between the pusher and the inner wall of the extrusion box;

[0065] Conveying unit: Start the independent motor of the drive roller 220, run the drive roller unloaded, observe whether its rotation is smooth, and check whether the filling plate 230 is secure;

[0066] Feeding unit: Start the stepper motor 324 to make the equalizing plate 321 rotate in the bearing plate 310, check whether the rotation of the equalizing groove 322 is smooth, and at the same time observe whether the elastic plate 3231 and the first ball 3232 of the striking part 323 can work normally.

[0067] Mixing unit: Start the independent motors of extrusion roller 520, bottom roller 530 and slitting roller 540 to run them under no-load, check whether the fit between each roller is normal, and whether the guide plate 550 is securely installed;

[0068] 2. Raw material processing stage:

[0069] The pectin sludge in the fermentation raw material of strawberry seedling substrate is added to the extrusion box 110 through the upper feed port 120;

[0070] Start the hydraulic push rod 141 to push the pusher 142 to squeeze the pectin sludge. According to the characteristics and process requirements of the pectin sludge, set the pressure and pushing speed of the hydraulic push rod so that the pectin sludge is shaped in the extrusion box.

[0071] The extruded pectin sludge passes through two square holes 152 of the molding die 150 to form a pectin sludge strip of a specific shape;

[0072] 3. Teleportation Phase:

[0073] After being shaped, the pectin sludge strip falls from the square hole 152 of the molding mold 150 onto the drive rollers 220 of the two conveying units 200 set above and below. The motor of the drive roller is started, causing the drive roller to rotate and drive the pectin sludge strip to move towards the inclined plate 400. Then, it moves synchronously between the extrusion roller 520 and the bottom roller 530 for extrusion.

[0074] During the process of the pectin sludge strip passing through the two conveying units 200, the feeding unit 300 evenly sprinkles straw onto the upper end of the pectin sludge strip set at the lower end.

[0075] 4. Mixing stage:

[0076] As the two pectin sludge strips pass under the extrusion roller 520, they encapsulate the straw scattered on the upper part of the pectin sludge strips. Then, they are equidistantly cut by the slitting roller 540. The cut material falls into the double-helix mixing conveyor and is then transported to the fermentation station for fermentation with adjusted humidity, pH value, and nutrient content.

[0077] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A continuous fermentation preparation system for strawberry seedling substrate, comprising an extrusion unit (100) for shaping and extruding pectin sludge in the fermentation raw materials of strawberry seedling substrate, characterized in that: A conveying unit (200) is installed on one side of the extrusion unit (100), a feeding unit (300) is installed in the middle of the conveying unit (200), and an inclined plate (400) and a mixing unit (500) are installed at the other end of the conveying unit (200). Two conveying units (200) are provided. Each conveying unit (200) includes two side plates (210). Multiple drive rollers (220) are installed linearly and equidistantly between the side plates (210). Multiple filling plates (230) are installed between the drive rollers (220) to prevent materials from falling between the drive rollers (220). An inclined plate (400) is installed between the side plate (210) inside the upper conveying unit (200) and the end away from the extrusion unit (100), and a bottom connecting plate (240) is installed between the side plate (210) inside the lower conveying unit (200) and the end away from the extrusion unit (100). The mixing unit (500) includes a vertical plate (510), and an extrusion roller (520) and a slitting roller (540) are installed between the upper inner sides of the vertical plate (510). Bottom rollers (530) are installed at the bottom ends of the extrusion roller (520) and the slitting roller (540), and a guide plate (550) is installed between the bottom rollers (530). The drive roller (220), extrusion roller (520), bottom roller (530), and slitting roller (540) are all driven by independent motors. The extrusion unit (100) includes an extrusion box (110). A molding die (150) is installed at the other end of the extrusion box (110). The molding die (150) includes a square plate (151). The upper and lower ends of the square plate (151) are provided with square holes (152) corresponding to the two conveying units (200). A screw (153) is rotatably connected to the inner edge of the square plate (151). The other end of the screw (153) is spirally connected to the extrusion box (110). The feeding unit (300) includes a bearing plate (310). A distribution unit (320) is installed on the inner side of the bearing plate (310). The bearing plate (310) includes a circular plate (311), a central hole (312) is provided in the middle of the circular plate (311), and a feeding port (313) is provided on one side of the circular plate (311). The equalizing unit (320) includes an equalizing plate (321), and equalizing grooves (322) are provided in the middle of the equalizing plate (321) in an annular shape. A circular shaft (325) is fixedly connected in the middle of the equalizing plate (321). One end of the circular shaft (325) is fixedly connected to the main shaft of the stepper motor (324). Second spheres (326) are distributed in an annular shape at equal intervals at the top of the circular shaft (325). A striking element (323) is installed on the upper side of the top of the circular shaft (325).

2. The continuous fermentation preparation system for strawberry seedling substrate according to claim 1, characterized in that: The upper end of the extrusion box (110) is provided with an upper feed port (120) for feeding pectin sludge. Two fixed frames (130) are installed side by side on one side of the extrusion box (110). The upper ends of the two fixed frames (130) are connected to the drive unit (140). The drive unit (140) includes a hydraulic push rod (141). The top end of the moving end of the hydraulic push rod (141) is fixedly connected to a pressing component (142) by bolts.

3. The continuous fermentation preparation system for strawberry seedling substrate according to claim 2, characterized in that: The fixed end of the hydraulic push rod (141) is fixedly connected to the fixed frame (130). The pusher (142) is adapted to the inside of the extrusion box (110). The lateral projection of the pusher (142) is U-shaped. The pusher (142) is set at the lower end of the upper feed port (120). The upper edge of the upper feed port (120) is arc-shaped.

4. The continuous fermentation preparation system for strawberry seedling substrate according to claim 1, characterized in that: The filling plate (230) is fixedly connected to the side plates (210) on both sides at both ends, the drive roller (220) is rotatably connected to the side plate (210), and the motor installed at the top of the drive roller (220) is fixedly connected to the side plate (210) through the motor housing.

5. The continuous fermentation preparation system for strawberry seedling substrate according to claim 1, characterized in that: The striking element (323) includes an elastic plate (3231), with a first ball (3232) fixedly connected to the lower side of one end of the elastic plate (3231), and the lower side of the elastic plate (3231) away from the first ball (3232) is welded and fixed between the extrusion box (110).

6. The continuous fermentation preparation system for strawberry seedling substrate according to claim 1, characterized in that: The vertical projection sizes of the circular plate (311) and the equalizing plate (321) are equal. The upper end of the circular shaft (325) is rotatably connected to the circular plate (311) through the middle hole (312). The circular plate (311) is fixedly connected to one of the side plates (210) at the lower end.

7. The continuous fermentation preparation system for strawberry seedling substrate according to claim 1, characterized in that: The angle between the inclined plate (400) and the bottom connecting plate (240) is 45°, and the distance between the bottom end of the inclined plate (400) and the bottom connecting plate (240) is 10cm.

8. A control method for a continuous fermentation preparation system for strawberry seedling substrate according to any one of claims 1-7, characterized in that: Includes the following steps: I. Preparation Stage: System startup: Turn on the main power supply of the system, check whether the power connection of each unit is normal, and ensure that the power supply to all motors, hydraulic push rods and other power equipment is stable; Extrusion unit: Start the hydraulic push rod (141) to drive the pusher (142) to reciprocate once in the extrusion box (110) to check the compatibility between the pusher and the inner wall of the extrusion box; Conveying unit: Start the independent motor of the drive roller (220) to make the drive roller run unloaded, observe whether its rotation is smooth, and check whether the filling plate (230) is secure; Feeding unit: Start the stepper motor (324) to make the equalizing plate (321) rotate in the bearing plate (310), check whether the rotation of the equalizing groove (322) is smooth, and at the same time observe whether the elastic plate (3231) and the first ball (3232) of the striking part (323) can work normally; Mixing unit: Start the independent motors of the extrusion roller (520), bottom roller (530) and slitting roller (540) and run them under no-load to check whether the fit between each roller is normal and whether the guide plate (550) is securely installed; II. Raw material processing stage: The pectin sludge in the fermentation raw material of strawberry seedling substrate is added to the extrusion box (110) through the upper feed port (120). Start the hydraulic push rod (141) to push the pusher (142) to squeeze the pectin sludge. According to the characteristics and process requirements of the pectin sludge, set the pressure and pushing speed of the hydraulic push rod so that the pectin sludge is shaped in the extrusion box. The extruded pectin sludge passes through the two square holes (152) of the molding die (150) to form a pectin sludge strip of a specific shape; III. Transmission Phase: After being shaped, the pectin sludge strip falls from the square hole (152) of the molding die (150) onto the drive rollers (220) of the two conveying units (200) set up above and below. The motor of the drive roller is started, causing the drive roller to rotate and drive the pectin sludge strip to move towards the inclined plate (400), and then move synchronously between the extrusion roller (520) and the bottom roller (530) for extrusion. During the process of the pectin sludge strip passing through two conveying units (200), the feeding unit (300) evenly sprinkles straw on the upper end of the pectin sludge strip set at the lower end. IV. Mixing Stage: When the two pectin sludge strips pass through the lower end of the extrusion roller (520), they extrude the straw that is scattered on the upper end of the pectin sludge strips. Then, they are cut at equal intervals by the slitting roller (540). The cut material falls into the double helix mixing conveyor and is then transported to the fermentation station for fermentation.

Images