Automatic proportioning device for potato virus-free seedling substrate

Abstract

The application relates to the technical field of agricultural machinery, and discloses an automatic proportioning device for potato virus-free seedling substrate, which comprises a bottom plate. In the application, the weighing sensor and a dynamic compensation algorithm are used to solve the metering deviation, improve the survival rate, growth potential and disease resistance of virus-free seedlings, guarantee the yield and quality of virus-free seed potatoes, and solve the problem that the growth of virus-free seedlings is affected by the insufficient proportioning precision of the traditional proportioning device. The material level device realizes automatic alarm for raw material supply, reduces manual intervention, errors and bacterial pollution, automatically scrapes the residues in the metering cylinder, avoids clumping, mold change and proportioning deviation, guarantees the stability of the substrate, and reduces the labor intensity. The double-stage linkage mixing and secondary homogenization design solve the problems of uneven mixing and stirring dead angle, avoid local nutrient imbalance, make the virus-free seedlings uniformly absorb nutrients, improve the growth uniformity, reduce the overgrowth and rotten roots, guarantee the seedling quality, reduce the substrate waste, meet the strict requirements of the potato virus-free seedlings on the uniformity of the substrate, and make up for the insufficient mixing efficiency and poor effect of the traditional mixing.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, specifically to an automatic mixing device for virus-free potato seedling substrate. Background Technology

[0002] Potatoes are the world's fourth largest food crop after corn, rice, and wheat. They are characterized by wide adaptability, high yield, rich nutrition, and high economic benefits, occupying an important position in my country's agricultural production. However, as an asexually propagated crop, potatoes are susceptible to infection by various viruses during cultivation. These viruses accumulate over generations, leading to seed potato degeneration, severely reducing potato yield and quality, and hindering the healthy development of the potato industry. Using virus-free potato seed tubers is the most direct and effective way to solve the problem of seed potato degeneration, and can increase potato yield. Therefore, virus-free potato seedling cultivation has become a core link in the high-quality development of the potato industry.

[0003] Currently, the formulation of potato virus-free seedling substrate mainly relies on manual formulation or traditional semi-automatic formulation devices. Manual formulation is not only labor-intensive and inefficient, but its accuracy also depends entirely on the operator's experience, which can easily lead to problems such as excessive deviations in the weighing of components and uneven mixing. This makes it difficult to meet the needs of large-scale, standardized virus-free seedling production. In addition, manual operation can easily introduce contaminants, affecting the purity of the virus-free seedlings.

[0004] Although traditional semi-automatic mixing devices have achieved mechanization in some aspects, they are prone to measurement deviations due to differences in the fluffiness, moisture content, and particle size of the substrate raw materials. This makes it difficult to meet the high-precision mixing requirements of virus-free seedling substrates and to satisfy the stringent requirements of virus-free seedlings for substrate growth. Furthermore, the mixing process often uses a single stirring method, resulting in insufficient mixing of raw materials and the potential for localized nutrient enrichment or deficiency, leading to low uniformity in the growth of virus-free seedlings. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an automatic mixing device for potato virus-free seedling substrate, which solves the problems of large measurement deviation and insufficient mixing in existing automatic mixing devices for seedling substrate.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: an automatic proportioning device for potato virus-free seedling substrate, comprising a base plate, wherein a metering component and an auxiliary component are provided on the base plate, the metering component is used to improve the accuracy of substrate metering, and the auxiliary component is used to improve the uniformity of substrate mixing;

[0007] The metering assembly includes a support column and a metering cylinder. Multiple clamping frames are uniformly fixedly connected to the support column along its circumference. Two mounting slots are symmetrically opened on each clamping frame. A connecting block and a weighing sensor are fixedly installed in each mounting slot. The connecting block abuts against the contact end of the weighing sensor and is fixedly connected to the metering cylinder. A lifting groove is opened inside the metering cylinder, and a sliding block is slidably connected to the lifting groove. A scraper ring is slidably connected inside the metering cylinder. A threaded rod is rotatably connected to the lifting groove, and the threaded rod is threadedly connected to the sliding block. A suction cup electromagnet is fixedly connected to one end of the sliding block near the scraper ring, and the suction cup electromagnet is compatible with the scraper ring.

[0008] The auxiliary components include a premixing cylinder and a main mixing chamber. Two stirring shafts are symmetrically installed in the main mixing chamber. Multiple adjusting grooves are evenly opened in the stirring shafts. Multiple rotating shafts are evenly rotatably connected in the adjusting grooves. Gears are fixedly connected to the outer wall of the rotating shafts. Toothed plates are slidably connected in the adjusting grooves. The teeth of the multiple gears mesh with the teeth of the toothed plates. A stirring blade is fixedly connected to the end of the rotating shaft away from the adjusting groove.

[0009] Preferably, the support column is uniformly fixedly connected with multiple mounting rings along the circumference, the inner ring wall of the mounting ring is fixedly connected with a storage tank, the discharge end of the storage tank is fixedly connected with a discharge pipe, and a drive motor is fixedly connected inside the discharge pipe.

[0010] Preferably, the output end of the drive motor is fixedly connected to a shaft, the outer wall of the shaft is fixedly connected to a spiral conveying plate, and a plurality of agitating scrapers are evenly installed on one end of the shaft located inside the storage tank.

[0011] Preferably, a corrugated pipe is fixedly connected to the outer wall of the discharge pipe, and the end of the corrugated pipe away from the storage tank is fixedly connected to the metering cylinder.

[0012] Preferably, a solenoid valve is fixedly connected to the discharge end of the metering cylinder, and a conical hopper is fixedly connected to the output end of the solenoid valve.

[0013] Preferably, a drive rod is rotatably connected inside the premixing cylinder, and a helical blade is fixedly connected to the outer wall of the drive rod.

[0014] Preferably, a push plate is fixedly connected to one end of the drive rod near the bottom wall of the premixing cylinder, and the push plate abuts against the inner wall of the premixing cylinder.

[0015] Preferably, a connecting frame is fixedly connected to the outer wall of the premixing cylinder, and the connecting frame is fixedly connected to the upper surface of the main mixing box.

[0016] Preferably, a sealing cover is installed at the top of the storage tank, and a level indicator is fixedly connected to the sealing cover.

[0017] Preferably, a discharge hopper is fixedly connected to the output end of the main mixing box, and a sealing plate is rotatably connected inside the discharge hopper.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In this invention, the combination of weighing sensors and dynamic compensation algorithms effectively solves the measurement deviation problem of existing devices, significantly improves the survival rate, growth potential and disease resistance of virus-free seedlings, ensures the yield and quality of virus-free seed potatoes, solves the core problem of insufficient precision in traditional proportioning methods affecting the growth of virus-free seedlings, and realizes raw material replenishment alarm through material level sensor, eliminating the need for real-time manual monitoring, reducing manual intervention, avoiding errors and contamination caused by manual operation, and automatically scraping away substrate residues in the metering cylinder, effectively preventing residue clumping and mold growth, preventing proportioning deviations and contamination caused by mixing of residual substrate with new substrate, further ensuring the stability of substrate quality, and eliminating the tedious process of manually cleaning the metering cylinder, reducing labor intensity and improving the overall operating efficiency of the device.

[0020] 2. In this invention, the dual-stage linkage mixing structure and secondary homogenization design completely solve the problems of uneven mixing and dead zones in existing devices, improve the uniformity of mixing of each component of the substrate, avoid local nutrient enrichment or deficiency, ensure that virus-free seedlings can absorb nutrients evenly, improve the uniformity of seedling growth, reduce problems such as seedling etiolation and root rot caused by uneven mixing, further guarantee the growth quality of virus-free seedlings and the quality of seed potato propagation, and avoid substrate waste caused by uneven mixing, indirectly reducing production costs. It meets the stringent requirements of potato virus-free seedlings for substrate uniformity, and also makes up for the shortcomings of low efficiency and poor effect of traditional mixing methods, thus improving the overall quality of the substrate. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an automatic proportioning device for potato virus-free seedling substrate according to the present invention;

[0022] Figure 2 This is a schematic diagram of the support column structure of an automatic proportioning device for potato virus-free seedling substrate according to the present invention;

[0023] Figure 3 This is a cross-sectional view of the discharge pipe of an automatic proportioning device for potato virus-free seedling substrate according to the present invention.

[0024] Figure 4 This is a cross-sectional view of the metering cylinder of an automatic proportioning device for potato virus-free seedling substrate according to the present invention.

[0025] Figure 5 This invention relates to an automatic proportioning device for potato virus-free seedling substrate. Figure 4A magnified structural diagram at point A;

[0026] Figure 6 This is a cross-sectional view of the main mixing chamber of an automatic mixing device for virus-free potato seedling substrate according to the present invention.

[0027] Figure 7 This is a cross-sectional view of the stirring shaft of an automatic proportioning device for potato virus-free seedling substrate according to the present invention.

[0028] In the diagram: 1. Base plate; 2. Main mixing tank; 3. Premixing cylinder; 4. Storage tank; 5. Metering cylinder; 6. Solenoid valve; 7. Bellows; 8. Connecting frame; 9. Mounting ring; 10. Support column; 11. Clamping frame; 12. Rotating shaft; 13. Conical hopper; 14. Sealing cover; 15. Material level indicator; 16. Discharge pipe; 17. Spiral conveyor plate; 18. Drive motor; 19. Shaft; 20. Agitating scraper; 21. Scraper ring; 22. Lifting trough; 23. Threaded rod; 24. Connecting block; 25. Mounting groove; 26. Weighing sensor; 27. Slide seat; 28. Suction cup electromagnet; 29. ​​Drive rod; 30. Spiral blade; 31. Push plate; 32. Agitating shaft; 33. Agitating blade; 34. Discharge hopper; 35. Sealing plate; 36. Adjusting groove; 37. Toothed plate; 38. Gear. Detailed Implementation

[0029] 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.

[0030] refer to Figures 1-7 The automatic proportioning device for potato virus-free seedling substrate shown includes a base plate 1, on which a metering component and an auxiliary component are provided. The metering component is used to improve the accuracy of substrate metering, and the auxiliary component is used to improve the uniformity of substrate mixing. A specific embodiment is shown below:

[0031] Example 1

[0032] The metering assembly includes a support column 10 and a metering cylinder 5. Multiple clamping frames 11 are uniformly fixedly connected to the support column 10 along the circumference. Two mounting slots 25 are symmetrically opened on the clamping frames 11. A connecting block 24 and a weighing sensor 26 are fixedly installed in the mounting slots 25. The contact end of the connecting block 24 abuts against the contact end of the weighing sensor 26, and the connecting block 24 is fixedly connected to the metering cylinder 5. A lifting groove 22 is opened in the metering cylinder 5. A slide seat 27 is slidably connected in the lifting groove 22. A scraper ring 21 is slidably connected in the metering cylinder 5. A threaded rod 23 is rotatably connected in the lifting groove 22. The threaded rod 23 is threadedly connected to the slide seat 27. A suction cup electromagnet 28 is fixedly connected to one end of the slide seat 27 near the scraper ring 21, and the suction cup electromagnet 28 is adapted to the scraper ring 21. A solenoid valve 6 is fixedly connected to the discharge end of the metering cylinder 5. A conical hopper 13 is fixedly connected to the output end of the solenoid valve 6.

[0033] The clamping frame 11 has an arc-shaped structure that fits the outer wall of the measuring cylinder 5 and is used to initially limit the position of the measuring cylinder 5. The mounting groove 25 is fixedly installed with a connecting block 24 and a weighing sensor 26. The connecting block 24 is made of elastic buffer material. One end of it is fixedly connected to the outer wall of the measuring cylinder 5, and the other end is tightly abutted against the contact end of the weighing sensor 26. It can effectively buffer the impact force generated when the matrix is ​​added to the measuring cylinder 5 and avoid the impact force from affecting the measuring accuracy of the weighing sensor 26.

[0034] When the substrate mass in the measuring cylinder 5 reaches the predetermined mass, the processor controlling the solenoid valve 6 opens, and the substrate in the measuring cylinder 5 automatically falls into the conical hopper 13 below the measuring cylinder 5. The rotating motor of the threaded rod 23 drives it to rotate, and the threaded rod 23 drives the slide 27 to move along the lifting groove 22. The suction cup electromagnet 28 installed on the slide 27 is energized, and the coil inside the suction cup electromagnet 28 is energized. According to the principle of electromagnetism, the iron core is strongly magnetized, and the suction cup electromagnet 28 generates magnetic force. Since the measuring cylinder 5 is made of plastic and the output end of the suction cup electromagnet 28 is close to the inner wall of the measuring cylinder 5, the iron ring embedded in the side wall of the scraper ring 21 is magnetically connected to the suction cup electromagnet 28. Driven by the slide 27, the scraper ring 21 moves along the inner wall of the measuring cylinder 5 and automatically cleans the inner wall of the measuring cylinder 5.

[0035] Example 2

[0036] The auxiliary components include a premixing cylinder 3 and a main mixing chamber 2. Two stirring shafts 32 are symmetrically installed inside the main mixing chamber 2. Multiple adjusting grooves 36 are evenly opened inside the stirring shafts 32. Multiple rotating shafts 12 are evenly rotatably connected inside the adjusting grooves 36. Gears 38 are fixedly connected to the outer wall of the rotating shafts 12. Toothed plates 37 are slidably connected inside the adjusting grooves 36. The teeth of the multiple gears 38 mesh with the teeth of the toothed plates 37. A stirring blade 33 is fixedly connected to the end of the rotating shaft 12 away from the adjusting grooves 36. A drive rod 29 is rotatably connected inside the premixing cylinder 3. Spiral blades 30 are fixedly connected to the outer wall of the drive rod 29. A push plate 31 is fixedly connected to the end of the drive rod 29 near the bottom wall of the premixing cylinder 3. The push plate 31 abuts against the inner wall of the premixing cylinder 3. A connecting frame 8 is fixedly connected to the outer wall of the premixing cylinder 3. The connecting frame 8 is fixedly connected to the upper surface of the main mixing chamber 2. A discharge hopper 34 is fixedly connected to the output end of the main mixing chamber 2. A sealing plate 35 is rotatably connected inside the discharge hopper 34.

[0037] The matrix in the metering cylinder 5 enters the premixing cylinder 3. The upper end of the drive rod 29 extends to the outside of the premixing cylinder 3 and is fixedly connected to the output end of the rotary motor, which is fixedly installed at the top of the premixing cylinder 3. A spiral blade 30 is fixedly connected to the outer wall of the drive rod 29. The spiral blade 30 is evenly distributed along the length of the drive rod 29 to achieve preliminary mixing of the matrix. A push plate 31 is fixedly connected to the end of the drive rod 29 near the bottom wall of the premixing cylinder 3. The push plate 31 abuts tightly against the inner wall of the premixing cylinder 3, which can completely push the matrix at the bottom of the premixing cylinder 3 into the main mixing box 2, preventing the matrix from accumulating at the bottom of the premixing cylinder 3. A connecting frame 8 is fixedly connected to the outer wall of the premixing cylinder 3. The lower end of the connecting frame 8 is fixedly connected to the upper surface of the main mixing box 2 to provide fixed support for the premixing cylinder 3.

[0038] The premixed matrix enters the main mixing chamber 2, where two symmetrically installed stirring shafts 32 are arranged in parallel and rotate synchronously in opposite directions. Multiple adjusting grooves 36 are evenly distributed within each stirring shaft 32 along its length. Each adjusting groove 36 is rotatably connected to multiple rotating shafts 12, which are perpendicular to the stirring shaft 32. Gears 38 are fixedly connected to the outer wall of each rotating shaft 12, and toothed plates are slidably connected within the adjusting groove 36. 37. The toothed plate 37 is arranged along the length of the adjusting groove 36. The teeth of multiple gears 38 mesh with the teeth of the toothed plate 37. The rotating motor embedded in the adjusting groove 36 rotates and drives the toothed plate 37 to slide along the adjusting groove 36, driving multiple gears 38 to rotate synchronously and adjust the angle of the stirring blades 33. The end of the rotating shaft 12 away from the adjusting groove 36 is fixedly connected to the stirring blades 33, and the stirring blades 33 on the two stirring shafts 32 are staggered, which can fully stir and tumble the substrate during rotation. The output end of the main mixing box 2 is fixedly connected to the discharge hopper 34. The discharge hopper 34 is located at the bottom center of the main mixing box 2. A sealing plate 35 is rotatably connected inside the discharge hopper 34. The sealing plate 35 is adapted to the inner wall of the discharge hopper 34. One end of the sealing plate 35 extends to the outside of the discharge hopper 34 and is fixedly connected to the output end of the drive cylinder to control the opening and closing of the discharge hopper 34 and realize the quantitative discharge of the mixed substrate.

[0039] Example 3

[0040] Multiple mounting rings 9 are uniformly fixedly connected to the support column 10 along the circumference. A storage tank 4 is fixedly connected to the inner ring wall of the mounting ring 9. A discharge pipe 16 is fixedly connected to the discharge end of the storage tank 4. A drive motor 18 is fixedly connected inside the discharge pipe 16. A shaft 19 is fixedly connected to the output end of the drive motor 18. A spiral conveying plate 17 is fixedly connected to the outer wall of the shaft 19. Multiple agitating scrapers 20 are uniformly installed at one end of the shaft 19 located inside the storage tank 4. A corrugated pipe 7 is fixedly connected to the outer wall of the discharge pipe 16. The end of the corrugated pipe 7 away from the storage tank 4 is fixedly connected to the metering cylinder 5. A sealing cover 14 is installed at the top of the storage tank 4. A level gauge 15 is fixedly connected to the sealing cover 14.

[0041] Storage tank 4 is used to store different types of potato virus-free seedling substrates (such as peat moss, perlite, vermiculite, etc.). The discharge end of storage tank 4 is fixedly connected to discharge pipe 16 to facilitate smooth substrate transportation. The output end of drive motor 18 is fixedly connected to shaft 19, which is set along the axis of discharge pipe 16. A spiral conveying plate 17 is fixedly connected to the outer wall of shaft 19. The spiral conveying plate 17 is tightly fitted with the inner wall of discharge pipe 16 to stably and evenly transport the substrate in storage tank 4 to metering cylinder 5. Multiple stirring scrapers 20 are evenly installed at one end of shaft 19 inside storage tank 4. The stirring scrapers 20 have an arc-shaped structure and are tightly fitted with the inner wall of storage tank 4. They can scrape off the substrate attached to the inner wall of storage tank 4 during the rotation of shaft 19, and at the same time stir the substrate in storage tank 4 to prevent substrate clumping and ensure smooth substrate transportation. A corrugated pipe 7 is fixedly connected to the outer wall of the discharge pipe 16. The corrugated pipe 7 has good flexibility and can adapt to the installation position of the metering cylinder 5. The end of the corrugated pipe 7 away from the storage tank 4 is fixedly connected to the upper opening of the metering cylinder 5, which is used to guide the substrate conveyed by the discharge pipe 16 into the metering cylinder 5, while preventing substrate leakage. A sealing cover 14 is installed on the top of the storage tank 4. The sealing cover 14 is threadedly connected to the upper opening of the storage tank 4, which facilitates the addition of substrate and prevents external dust and impurities from entering the storage tank 4 and contaminating the substrate. A level sensor 15 is fixedly connected to the sealing cover 14. The detection end of the level sensor 15 extends into the storage tank 4. The level sensor 15 is electrically connected to the control system and can detect the substrate balance in the storage tank 4 in real time and transmit the signal to the control system. When the substrate balance is lower than the set value, the control system issues an alarm signal to remind the staff to add substrate in time.

[0042] The working principle of this invention is as follows:

[0043] Workers open the sealing cap 14 at the top of storage tank 4 and fill different types of potato virus-free seedling substrates (such as peat moss, perlite, vermiculite, etc.) into the corresponding storage tank 4. After closing the sealing cap 14, the substrate storage is completed. The level sensor 15 on the storage tank 4 monitors the remaining substrate in the tank in real time. At the same time, the stirring scraper 20 in the storage tank 4 rotates slightly with the shaft 19 to stir the substrate in the tank and prevent the substrate from clumping. After the mixing process is started, the control system controls the drive motor 18 in the discharge pipe 16 of the corresponding storage tank 4 to start according to the preset substrate mixing ratio. The drive motor 18 drives the shaft 19 to rotate, and the spiral conveyor plate 17 on the shaft 19 rotates synchronously to guide the substrate in the storage tank 4 into the corresponding metering cylinder 5 along the discharge pipe 16. Weighing sensor 26 transmits the weight data of the substrate inside the measuring cylinder 5 to the control system in real time. When the substrate weight reaches the preset value, the control system controls the drive motor 18 to stop working and simultaneously closes the conveying channel of the discharge pipe 16, completing the measurement of this type of substrate. If there is substrate adhering to the inner wall of the measuring cylinder 5, the control system controls the rotating motor inside the measuring cylinder 5 to start, driving the threaded rod 23 to rotate. The threaded rod 23 drives the slide 27 to slide up and down along the lifting groove 22. The suction cup electromagnet 28 on the slide 27 is energized to attract the scraper ring 21, driving the scraper ring 21 to slide up and down synchronously, thoroughly scraping off the substrate on the inner wall of the measuring cylinder 5, ensuring the accuracy of the measurement data. After all types of substrates have been accurately measured according to the above process, the control system controls the solenoid valve 6 at the lower end of the measuring cylinder 5 to open. The measured substrate is introduced into the premixing cylinder 3 through the conical hopper 13. The spiral blades 30 on the drive rod 29 rotate synchronously to perform preliminary stirring and mixing of different types of substrates, realizing the premixing of the substrate. The push plate 31 at the lower end of the 9 rotates with the drive rod 29, pushing the substrate at the bottom of the premixing cylinder 3 completely into the main mixing box 2, preventing the substrate from accumulating at the bottom of the premixing cylinder 3. After the premixed substrate enters the main mixing box 2, the two stirring shafts 32 rotate in opposite directions, and the stirring blades 33 on the stirring shafts 32 rotate synchronously to deeply stir and tumble the substrate. According to the mixing requirements of the substrate, the drive toothed plate 37 slides along the adjustment groove 36 of the stirring shaft 32. The toothed plate 37 drives multiple gears 38 to rotate synchronously, and the gears 38 drive the rotating shaft 12 to rotate, thereby adjusting the angle of the stirring blades 33 so that the stirring blades 33 can stir the substrate from different angles, improve the mixing uniformity, and ensure that various substrates are fully integrated. When the substrate in the main mixing box 2 has been mixed for a preset time, the control system controls the drive cylinder in the discharge hopper 34 at the bottom of the main mixing box 2 to start, drive the sealing plate 35 to rotate, open the discharge hopper 34, and discharge the mixed substrate through the discharge hopper 34 into the designated seedling container or conveying equipment.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic mixing device for potato virus-free seedling substrate, comprising a base plate (1), characterized in that: The base plate (1) is provided with a metering component and an auxiliary component. The metering component is used to improve the accuracy of matrix metering, and the auxiliary component is used to improve the uniformity of matrix mixing. The metering assembly includes a support column (10) and a metering cylinder (5). Multiple clamping frames (11) are uniformly fixedly connected to the support column (10) circumferentially. Two mounting slots (25) are symmetrically opened on each clamping frame (11). A connecting block (24) and a weighing sensor (26) are fixedly installed in each mounting slot (25). The connecting block (24) abuts against the contact end of the weighing sensor (26), and the connecting block (24) is fixedly connected to the metering cylinder (5). A lifting groove (22) is provided inside the measuring cylinder (5). A slide block (27) is slidably connected inside the lifting groove (22). A scraper ring (21) is slidably connected inside the measuring cylinder (5). A threaded rod (23) is rotatably connected inside the lifting groove (22). The threaded rod (23) is threadedly connected to the slide block (27). A suction cup electromagnet (28) is fixedly connected to one end of the slide block (27) near the scraper ring (21), and the suction cup electromagnet (28) is compatible with the scraper ring (21). The auxiliary components include a premixing cylinder (3) and a main mixing box (2). Two stirring shafts (32) are symmetrically installed in the main mixing box (2). Multiple adjusting grooves (36) are evenly opened in the stirring shafts (32). Multiple rotating shafts (12) are evenly rotatably connected in the adjusting grooves (36). Gears (38) are fixedly connected to the outer wall of the rotating shafts (12). A toothed plate (37) is slidably connected in the adjusting grooves (36). The teeth of the multiple gears (38) mesh with the teeth of the toothed plate (37). An agitator blade (33) is fixedly connected to the end of the rotating shaft (12) away from the adjusting grooves (36).

2. The automatic proportioning device for potato virus-free seedling substrate according to claim 1, characterized in that: The support column (10) is uniformly fixedly connected with multiple mounting rings (9) along the circumference. The inner ring wall of the mounting ring (9) is fixedly connected with a storage tank (4). The discharge end of the storage tank (4) is fixedly connected with a discharge pipe (16). The discharge pipe (16) is fixedly connected with a drive motor (18).

3. The automatic proportioning device for potato virus-free seedling substrate according to claim 2, characterized in that: The output end of the drive motor (18) is fixedly connected to a shaft (19), and a spiral conveying plate (17) is fixedly connected to the outer wall of the shaft (19). Multiple stirring scrapers (20) are evenly installed on one end of the shaft (19) inside the storage tank (4).

4. The automatic proportioning device for potato virus-free seedling substrate according to claim 2, characterized in that: A corrugated pipe (7) is fixedly connected to the outer wall of the discharge pipe (16), and the end of the corrugated pipe (7) away from the storage tank (4) is fixedly connected to the metering cylinder (5).

5. The automatic proportioning device for potato virus-free seedling substrate according to claim 1, characterized in that: The discharge end of the metering cylinder (5) is fixedly connected to a solenoid valve (6), and the output end of the solenoid valve (6) is fixedly connected to a conical hopper (13).

6. The automatic proportioning device for potato virus-free seedling substrate according to claim 1, characterized in that: The premixing cylinder (3) is rotatably connected to a drive rod (29), and the outer wall of the drive rod (29) is fixedly connected to a spiral blade (30).

7. The automatic proportioning device for potato virus-free seedling substrate according to claim 6, characterized in that: The drive rod (29) is fixedly connected to a push plate (31) at one end near the bottom wall of the premixing cylinder (3), and the push plate (31) abuts against the inner wall of the premixing cylinder (3).

8. The automatic proportioning device for potato virus-free seedling substrate according to claim 7, characterized in that: The premixing cylinder (3) is fixedly connected to the outer wall of the connecting frame (8), and the connecting frame (8) is fixedly connected to the upper surface of the main mixing box (2).

9. The automatic proportioning device for potato virus-free seedling substrate according to claim 2, characterized in that: The top of the storage tank (4) is fitted with a sealing cover (14), and a level gauge (15) is fixedly connected to the sealing cover (14).

10. The automatic proportioning device for potato virus-free seedling substrate according to claim 1, characterized in that: The output end of the main mixing box (2) is fixedly connected to a discharge hopper (34), and a sealing plate (35) is rotatably connected inside the discharge hopper (34).

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