A device for measuring the water content of a seedling-raising substrate and a measuring method thereof

Abstract

The present invention discloses a device for measuring the water content of a seedling-raising substrate and a measuring method thereof, which relates to the technical field of soil analysis. The device includes an oven, on the top surface of which a weighing scale is fixedly installed. Inside the oven, a drying hopper is movably arranged, and a moving component is arranged on the outer wall of the drying hopper. A combing component is arranged inside the drying hopper, and a material leveling component is arranged inside the drying hopper. At one end corresponding to the bottom surface of the oven and the drying hopper, a blanking port is opened. A blanking component is arranged on one side of the blanking port of the drying hopper, and the inner wall of the bottom surface of the drying hopper is inclined downward toward the blanking port. The device for measuring the water content of a seedling-raising substrate and the measuring method thereof disclosed by the present invention have the technical effects that during the drying process of the seedling-raising substrate, the distribution is uniform, the situation of the accumulation of the seedling-raising substrate is avoided, the seedling-raising substrate can be dried evenly, the drying effect is good, and the accuracy of measuring the water content of the seedling-raising substrate is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of soil analysis, and particularly relates to a device for measuring the water content of a seedling-raising substrate and a measuring method thereof. Background Art

[0002] The seedling-raising substrate is prepared by mixing peat produced in the primeval forest of Changbai Mountain in Northeast China, vermiculite from Lingshou County, and other additives in a certain proportion.

[0003] The water content (also known as moisture content, wet content) refers to the amount of water in a certain material, which may refer to soil, rock, ceramic, or fruit, wood, etc.

[0004] A commonly used method for measuring the water content of the seedling-raising substrate is the drying method. After weighing and measuring the collected seedling-raising substrate, it is placed in a drying oven for drying, and then the dried seedling-raising substrate is weighed again. The mass difference before and after drying is the water content of the seedling-raising substrate.

[0005] When the existing seedling-raising substrate is dried, it is directly placed in the drying oven for drying. During the drying process, the seedling-raising substrate is unevenly distributed, and there is a situation of accumulation of the seedling-raising substrate, resulting in the ineffective drying of the inner-layer seedling-raising substrate, poor drying uniformity, affecting the drying effect, and then affecting the accuracy of the water content measurement. Summary of the Invention

[0006] The present invention discloses a device for measuring the water content of a seedling-raising substrate and a measuring method thereof, aiming to solve the technical problems that during the drying process, the seedling-raising substrate is unevenly distributed, there is a situation of accumulation of the seedling-raising substrate, resulting in the ineffective drying of the inner-layer seedling-raising substrate, poor drying uniformity, affecting the drying effect, and then affecting the accuracy of the water content measurement.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A device for measuring the water content of a seedling-raising substrate includes a drying oven. A weighing scale is fixedly installed on the top surface of the drying oven, and a feed inlet is opened on one side of the top surface of the drying oven. A sealing cover is installed inside the feed inlet. A drying hopper is movably arranged inside the drying oven, and a slide rail is fixedly installed on the inner bottom wall of the drying oven. The drying hopper is slidably arranged on the surface of the slide rail, and a moving component is arranged on the outer wall of the drying hopper. A combing component is arranged inside the drying hopper, and a material leveling component is arranged inside the drying hopper. A discharge port is correspondingly opened at one end of the bottom surfaces of the drying oven and the drying hopper. A discharging component is arranged on one side of the discharge port of the drying hopper, and the inner bottom wall of the drying hopper is inclined downward towards the discharge port.

[0009] By providing a drying oven, a weighing scale, a sealing cover, a drying hopper, a slide rail, a moving component, a combing component, a material leveling component and a blanking component, the weighed seedling-growing substrate is poured into the drying hopper. The seedling-growing substrate on the drying hopper flows towards the blanking port side through the moving component. The seedling-growing substrate is combed into a uniform thickness through the combing component. The seedling-growing substrate is combed and spread out through the material leveling component, so that the seedling-growing substrate is evenly distributed, avoiding the accumulation of the seedling-growing substrate. The seedling-growing substrate can be evenly dried with good drying effect, ensuring the accuracy of the moisture content measurement of the seedling-growing substrate. After drying, the blanking component is adjusted to discharge the dried seedling-growing substrate through the blanking port, and then the dried seedling-growing substrate is weighed by the weighing scale, and the moisture content of the seedling-growing substrate is measured according to the weight change before and after drying.

[0010] In a preferred embodiment, the moving component includes a fixing plate fixedly connected to the middle of the outer wall of the drying hopper. A connecting rod is fixedly connected to the outer wall of the fixing plate away from the drying hopper. A U-shaped frame is fixedly connected to the outer wall of the connecting rod away from the fixing plate. A moving wheel is rotatably arranged inside the U-shaped frame. An L-shaped frame is fixedly installed on the inner side wall of the drying oven. The connecting rod is slidably arranged inside the L-shaped frame. A first spring is fixedly connected to the outer wall of the L-shaped frame away from the fixing plate. One end of the first spring away from the fixing plate is fixedly connected to the outer wall of the U-shaped frame, and the first spring is sleeved outside the connecting rod. A first motor is fixedly connected to the bottom surface of the L-shaped frame. The power output shaft of the first motor is connected to a cam disk through a coupling in a transmission manner. The moving wheel abuts against the outer side wall of the cam disk.

[0011] By providing the moving component, before drying, the first motor is started to make the drying hopper move reciprocally, and the seedling-growing substrate in the drying hopper flows towards the blanking port side, so that the seedling-growing substrate is evenly laid on the inner wall of the bottom surface of the drying hopper.

[0012] In a preferred embodiment, the carding component includes a first carding plate which is movably arranged inside the drying hopper. Both outer walls on two sides of the first carding plate are fixedly connected with second springs. One ends of the second springs far away from the first carding plate are fixedly connected with second carding plates. Both outer walls on two sides of the first carding plate are fixedly connected with first guide rods. The second carding plates are slidably arranged on the surfaces of the first guide rods. One side of the top surface of the drying hopper is fixedly connected with a first support. The top surface of the first support is fixedly connected with a first cylinder. The bottom surface of the output end of the first cylinder is fixedly connected to one end of the top surface of the first carding plate. One end of the top surface of the drying hopper far away from the first support is fixedly connected with a second support. The bottom surface of the second support is fixedly connected with a second guide rod. The top end of the outer wall on one side of the first carding plate far away from the first cylinder is fixedly connected with a lifting seat. The lifting seat is slidably arranged on the surface of the second guide rod. The material leveling component includes two toothless gears which are symmetrically arranged with respect to the first carding plate. A connecting rod is fixedly connected to the outer walls on the sides of the two toothless gears close to each other. One side outer wall of the drying hopper is fixedly connected with a mounting plate. A second motor is fixedly connected to the outer wall of the mounting plate. The power output shaft of the second motor is connected to the outer wall of one of the toothless gears through a coupling. Rack bars are meshed with the surfaces of the two toothless gears. The rack bars are slidably arranged inside the drying hopper. One end of the rack bar far away from the drying hopper is fixedly connected with a support plate. A third spring is fixedly connected to the outer wall on one side of the support plate close to the drying hopper. One end of the third spring far away from the support plate is fixedly connected to the outer wall of the drying hopper. One end of the rack bar far away from the support plate is fixedly connected with a third support. One end of the third support far away from the rack bar is fixedly connected with a fixing disk. A circular opening is formed in the bottom surface of the fixing disk. One end of the rack bar far away from the support plate is fixedly connected with a fourth support. The top surface of one end of the fourth support far away from the rack bar is fixedly connected with a third motor. The power output shaft of the third motor is connected to a rotating disk through a coupling. The rotating disk is rotatably arranged at the bottom of the circular opening. A plurality of arc-shaped grooves distributed in a circumferential array are formed inside the rotating disk. A plurality of strip-shaped grooves distributed in a circumferential array are formed inside the fixing disk. The arc-shaped grooves and the strip-shaped grooves are arranged corresponding to each other up and down. A sliding rod is slidably arranged in each corresponding arc-shaped groove and strip-shaped groove. A connecting frame is fixedly connected to the outer wall of the top end of the sliding rod. A material leveling rake is fixedly connected to the outer wall of the bottom end of the connecting frame. The material leveling rake is slidably arranged below the rotating disk.

[0013] By providing the carding component and the material leveling component, the thickness of the flowing seedling-raising substrate is limited by the first carding plate and the second carding plates, and the seedling-raising substrate is carded into a uniform thickness. The second motor is started to make the material leveling rake reciprocally slide inside the drying hopper. The third motor is driven in a circulating clockwise and counterclockwise manner to make the material leveling rake evenly card the seedling-raising substrate, improve the uniformity during the drying of the seedling-raising substrate, ensure the drying effect, and then drying can be carried out.

[0014] In a preferred embodiment, the blanking assembly includes an upper sealing plate, which is fixedly connected to the inner wall of the top end of the blanking port of the drying hopper. The top surface of the upper sealing plate is fixedly connected with a fifth support. The bottom surface of the fifth support is fixedly connected with a second cylinder. The bottom surface of the output end of the second cylinder is fixedly connected with a partition plate, which is slidably arranged on the outer wall of the upper sealing plate and the inner walls of both sides of the drying hopper. The partition plate is arranged on the side of the blanking port.

[0015] By providing the blanking assembly, after drying is completed, the second cylinder is adjusted to move the partition plate upward, so that the dried seedling-raising substrate is discharged through the blanking port.

[0016] A method for measuring the water content of a seedling-raising substrate, using a device for measuring the water content of a seedling-raising substrate as described above, includes the following steps:

[0017] Step 1: Weigh the collected seedling-raising substrate with a weighing scale. Open the sealing cover and pour the weighed seedling-raising substrate into the drying hopper through the feeding port.

[0018] Step 2: Start the first motor to make the seedling-raising substrate on the drying hopper flow towards the blanking port side. Comb the seedling-raising substrate into a uniform thickness through the first combing plate and the second combing plate. Start the second motor and the third motor, and comb the seedling-raising substrate with the leveling rake to make the seedling-raising substrate dry evenly.

[0019] Step 3: After drying is completed, stretch and adjust the second cylinder to move the partition plate upward. Continue to drive the first motor to discharge the dried seedling-raising substrate through the blanking port. Then use the weighing scale to weigh the dried seedling-raising substrate, and measure the water content of the seedling-raising substrate according to the weight change before and after drying.

[0020] As can be seen from the above, a device for measuring the water content of a seedling-raising substrate provided by the present invention has the technical effects of making the seedling-raising substrate evenly distributed during the drying process, avoiding the accumulation of the seedling-raising substrate, enabling the seedling-raising substrate to dry evenly, having a good drying effect, and ensuring the accuracy of measuring the water content of the seedling-raising substrate. Brief Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of a device for measuring the water content of a seedling-raising substrate proposed by the present invention.

[0022] Figure 2 It is a side sectional view of the drying box of a device for measuring the water content of a seedling-raising substrate proposed by the present invention.

[0023] Figure 3 It is a side sectional view of the moving assembly of a device for measuring the water content of a seedling-raising substrate proposed by the present invention.

[0024] Figure 4Side view of the combing component structure of a device for measuring the water content of a seedling-raising substrate proposed by the present invention.

[0025] Figure 5 Side view of the material leveling component structure of a device for measuring the water content of a seedling-raising substrate proposed by the present invention.

[0026] Figure 6 Cross-sectional view of the side structure at the fixed plate of a device for measuring the water content of a seedling-raising substrate proposed by the present invention.

[0027] Figure 7 Cross-sectional view of the side structure at the material discharging component of a device for measuring the water content of a seedling-raising substrate proposed by the present invention.

[0028] In the figure: 1, drying oven; 2, weighing scale; 3, sealing cover; 4, drying hopper; 5, slide rail; 6, moving component; 601, fixing plate; 602, connecting rod; 603, U-shaped frame; 604, moving wheel; 605, L-shaped frame; 606, first spring; 607, first motor; 608, cam disc; 7, combing component; 701, first combing plate; 702, second spring; 703, second combing plate; 704, first guiding rod; 705, first bracket; 706, first cylinder; 707, second bracket; 708, second guiding rod; 709, lifting seat; 8, mounting plate; 9, material leveling component; 901, toothless gear; 902, coupling rod; 903, second motor; 904, rack; 905, support plate; 906, third spring; 907, third bracket; 908, fixed plate; 909, fourth bracket; 910, third motor; 911, rotating disc; 912, arc-shaped groove; 913, strip-shaped groove; 914, sliding rod; 915, connecting frame; 916, material leveling rake; 10, material discharging component; 1001, upper sealing plate; 1002, fifth bracket; 1003, second cylinder; 1004, partition plate. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0030] A device for measuring the water content of a seedling-raising substrate disclosed by the present invention is mainly applied to the scenario where the distribution of the seedling-raising substrate is uneven during the drying process, there is a situation of accumulation of the seedling-raising substrate, resulting in the ineffective drying of the inner-layer seedling-raising substrate, poor drying uniformity, affecting the drying effect, and then affecting the accuracy of the water content measurement.

[0031] Refer to Figures 1-7, A device for measuring the water content of a seedling-raising substrate, which includes an oven 1. A weighing scale 2 is fixedly installed on the top surface of the oven 1. And a feed inlet is provided on one side of the top surface of the oven 1. A sealing cover 3 is installed inside the feed inlet. A drying hopper 4 is movably arranged inside the oven 1. And a slide rail 5 is fixedly installed on the inner bottom wall of the oven 1. The drying hopper 4 is slidably arranged on the surface of the slide rail 5. And a moving component 6 is arranged on the outer wall of the drying hopper 4. A combing component 7 is arranged inside the drying hopper 4. And a material leveling component 9 is arranged inside the drying hopper 4. The oven 1 and one end of the bottom surface of the drying hopper 4 are correspondingly provided with a discharge port. A discharging component 10 is arranged on one side of the discharge port of the drying hopper 4. And the inner bottom wall of the drying hopper 4 is inclined downward toward the discharge port side.

[0032] Specifically, the collected seedling-raising substrate is weighed by the weighing scale 2. The sealing cover 3 is opened, and the weighed seedling-raising substrate is poured into the drying hopper 4 through the feed inlet. The seedling-raising substrate on the drying hopper 4 is made to flow toward the discharge port side through the moving component 6. The seedling-raising substrate is combed into a uniform thickness through the combing component 7. The seedling-raising substrate is combed and spread out through the material leveling component 9, so that the seedling-raising substrate is evenly distributed, avoiding the situation of seedling-raising substrate accumulation. The seedling-raising substrate is dried evenly with good drying effect, ensuring the accuracy of measuring the water content of the seedling-raising substrate. After drying, the discharging component 10 is adjusted to discharge the dried seedling-raising substrate through the discharge port. Then, the dried seedling-raising substrate is weighed by the weighing scale 2, and the water content of the seedling-raising substrate is measured according to the weight change before and after drying.

[0033] Refer to Figure 2 and Figure 3 , In a preferred embodiment, the moving component 6 includes a fixing plate 601. The fixing plate 601 is fixedly connected to the middle of the outer wall of the drying hopper 4. A connecting rod 602 is fixedly connected to the outer wall of the fixing plate 601 away from the drying hopper 4. A U-shaped frame 603 is fixedly connected to the outer wall of the connecting rod 602 away from the fixing plate 601. A moving wheel 604 is rotatably arranged inside the U-shaped frame 603. An L-shaped frame 605 is fixedly installed on the inner side wall of the oven 1. The connecting rod 602 is slidably arranged inside the L-shaped frame 605; A first spring 606 is fixedly connected to the outer wall of the L-shaped frame 605 away from the fixing plate 601. One end of the first spring 606 away from the fixing plate 601 is fixedly connected to the outer wall of the U-shaped frame 603. And the first spring 606 is sleeved on the outside of the connecting rod 602. A first motor 607 is fixedly connected to the bottom surface of the L-shaped frame 605. The power output shaft of the first motor 607 is connected in transmission through a coupling to a cam disc 608. The moving wheel 604 abuts against the outer side wall of the cam disc 608.

[0034] Specifically, before drying, start the first motor 607 to rotate the cam disk 608. Under the elastic action of the first spring 606, the connecting rod 602 drives the drying hopper 4 to reciprocate, and the seedling-raising substrate in the drying hopper 4 flows towards the side of the material outlet, so that the seedling-raising substrate is evenly laid on the inner wall of the bottom surface of the drying hopper 4.

[0035] Refer to Figure 2 , Figure 4 , Figure 5 and Figure 6, in a preferred embodiment, the carding assembly 7 includes a first carding plate 701 which is movably arranged inside the drying hopper 4. Both outer walls on the two sides of the first carding plate 701 are fixedly connected with second springs 702. The ends of the second springs 702 far away from the first carding plate 701 are fixedly connected with second carding plates 703 respectively. Both outer walls on the two sides of the first carding plate 701 are fixedly connected with first guide rods 704. The second carding plates 703 are slidably arranged on the surfaces of the first guide rods 704. One side of the top surface of the drying hopper 4 is fixedly connected with a first support 705. The top surface of the first support 705 is fixedly connected with a first cylinder 706. The bottom surface of the output end of the first cylinder 706 is fixedly connected to one end of the top surface of the first carding plate 701. One end of the top surface of the drying hopper 4 far away from the first support 705 is fixedly connected with a second support 707. The bottom surface of the second support 707 is fixedly connected with a second guide rod 708. The top end of the outer wall on the side of the first carding plate 701 far away from the first cylinder 706 is fixedly connected with a lifting seat 709. The lifting seat 709 is slidably arranged on the surface of the second guide rod 708. The material leveling assembly 9 includes two toothless gears 901 which are symmetrically arranged with respect to the first carding plate 701. Both outer walls on the sides of the two toothless gears 901 close to each other are fixedly connected with a connecting shaft rod 902. One side outer wall of the drying hopper 4 is fixedly connected with a mounting plate 8. The outer wall of the mounting plate 8 is fixedly connected with a second motor 903. The power output shaft of the second motor 903 is in transmission connection with the outer wall of one of the toothless gears 901 through a coupling. Both surfaces of the two toothless gears 901 are engaged with racks 904. The racks 904 are slidably arranged inside the drying hopper 4. One end of the rack 904 far away from the drying hopper 4 is fixedly connected with a support plate 905. One side outer wall of the support plate 905 close to the drying hopper 4 is fixedly connected with a third spring 906. The end of the third spring 906 far away from the support plate 905 is fixedly connected to the outer wall of the drying hopper 4. One end of the rack 904 far away from the support plate 905 is fixedly connected with a third support 907. One end of the third support 907 far away from the rack 904 is fixedly connected with a fixed disk 908. A circular opening is formed in the bottom surface of the fixed disk 908. One end of the rack 904 far away from the support plate 905 is fixedly connected with a fourth support 909. The top surface of one end of the fourth support 909 far away from the rack 904 is fixedly connected with a third motor 910. The power output shaft of the third motor 910 is in transmission connection with a rotating disk 911 through a coupling. The rotating disk 911 is rotatably arranged at the bottom of the circular opening. A plurality of arc-shaped grooves 912 distributed in a circumferential array are formed inside the rotating disk 911. A plurality of strip-shaped grooves 913 distributed in a circumferential array are formed inside the fixed disk 908. The arc-shaped grooves 912 and the strip-shaped grooves 913 are arranged corresponding to each other up and down. A sliding rod 914 is slidably arranged in each corresponding arc-shaped groove 912 and strip-shaped groove 913. The top outer wall of the sliding rod 914 is fixedly connected with a connecting frame 915. The bottom outer wall of the connecting frame 915 is fixedly connected with a material leveling rake 916. The material leveling rake 916 is slidably arranged below the rotating disk 911.

[0036] Specifically, according to the weight of the dry seedling-raising substrate, the cylinder 706 is adjusted to change the heights of the material combing plate 701 and the material combing plate 703. During the process of the seedling-raising substrate flowing along the inner wall of the bottom surface of the drying hopper 4, the thickness of the flowing seedling-raising substrate is limited by the material combing plate 701 and the material combing plate 703, and the seedling-raising substrate is combed into a uniform thickness. Then, the motor 903 is started, the toothless gear 901 meshes with the rack 904, so that the material leveling rake 916 reciprocally slides inside the drying hopper 4. The motor 910 is cyclically driven clockwise and counterclockwise, so that the rotating disk 911 rotates, and the sliding rod 914 reciprocally slides inside the arc-shaped groove 912 and the strip-shaped groove 913, so that the material leveling rake 916 evenly combs the seedling-raising substrate, improves the uniformity of the seedling-raising substrate during drying, ensures the drying effect, and then drying can be carried out.

[0037] Referring to Figure 2 and Figure 7 , in a preferred embodiment, the blanking assembly 10 includes an upper sealing plate 1001, the upper sealing plate 1001 is fixedly connected to the inner wall of the top end of the blanking port of the drying hopper 4, and a bracket five 1002 is fixedly connected to the top surface of the upper sealing plate 1001. A cylinder two 1003 is fixedly connected to the bottom surface of the bracket five 1002. A partition plate 1004 is fixedly connected to the bottom surface of the output end of the cylinder two 1003. The partition plate 1004 is slidably arranged on the outer wall of the upper sealing plate 1001 and the inner walls of both sides of the drying hopper 4, and the partition plate 1004 is arranged on the side of the blanking port.

[0038] Specifically, after the drying of the seedling-raising substrate is completed, the cylinder two 1003 is stretched to move the partition plate 1004 upward, and the motor one 607 is continuously driven to discharge the dried seedling-raising substrate through the blanking port.

[0039] A method for measuring the water content of a seedling-raising substrate, using a device for measuring the water content of a seedling-raising substrate as described above, includes the following steps:

[0040] Step 1: Weigh the collected seedling-raising substrate by the weighing scale 2, open the sealing cover 3, and pour the weighed seedling-raising substrate into the drying hopper 4 through the feeding port;

[0041] Step 2: Before drying, start Motor 1 607 to rotate the cam disk 608. Under the elastic action of Spring 1 606, the connecting rod 602 drives the drying hopper 4 to reciprocate. The nursery substrate in the drying hopper 4 flows towards the discharge port side, and the nursery substrate is evenly laid on the inner bottom wall of the drying hopper 4. The thickness of the nursery substrate flowing through is limited by the first combing plate 701 and the second combing plate 703, and the nursery substrate is combed into a uniform thickness. Start Motor 2 903, the toothless gear 901 meshes with the rack 904, so that the material leveling rake 916 reciprocates inside the drying hopper 4. Cyclically drive Motor 3 910 clockwise and counterclockwise, so that the rotating disk 911 rotates, and the sliding rod 914 reciprocates inside the arc-shaped groove 912 and the strip-shaped groove 913, so that the material leveling rake 916 evenly combs the nursery substrate, improving the uniformity of the nursery substrate during drying and ensuring the drying effect, and then drying can be carried out;

[0042] Step 3: After drying is completed, stretch and adjust Cylinder 2 1003 to move the partition plate 1004 upward, continue to drive Motor 1 607, so that the dried nursery substrate is discharged through the discharge port, and then use the weighing scale 2 to weigh the dried nursery substrate, and measure the water content of the nursery substrate according to the weight change before and after drying.

[0043] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A device for measuring the water content of a seedling-growing substrate, comprising an oven (1), characterized in that, A weighing scale (2) is fixedly installed on the top surface of the drying box (1), and a feed port is provided on one side of the top surface of the drying box (1), a sealing cover (3) is installed inside the feed port, a drying hopper (4) is movably provided inside the drying box (1), and a slide rail (5) is fixedly installed on the inner wall of the bottom surface of the drying box (1), the drying hopper (4) is slidably provided on the surface of the slide rail (5), and a moving component (6) is provided on the outer wall of the drying hopper (4), a combing component (7) is provided inside the drying hopper (4), and a material leveling component (9) is provided inside the drying hopper (4), a discharge port is provided at one end of the bottom surface of the drying box (1) and the drying hopper (4), a discharge component (10) is provided on one side of the discharge port of the drying hopper (4), and the inner wall of the bottom surface of the drying hopper (4) is tilted downward toward the discharge port; The combing assembly (7) includes a combing plate (701), which is movably arranged inside the drying hopper (4), and the outer walls of both sides of the combing plate (701) are fixedly connected to springs (702), and the ends of the springs (702) away from the combing plate (701) are fixedly connected to combing plates (703), and the outer walls of both sides of the combing plate (701) are fixedly connected to guide rods (704), and the combing plate (703) is slidably arranged on the surface of the guide rods (704), and one side of the top surface of the drying hopper (4) is fixedly connected to a bracket (705), and the top surface of the bracket (705) is fixedly connected to a cylinder (706), and the bottom surface of the output end of the cylinder (706) is fixedly connected to the combing plate ( The top surface of the drying hopper (4) is fixedly connected to the bracket 2 (707) at one end of the top surface away from the bracket 1 (705), the bottom surface of the bracket 2 (707) is fixedly connected to the guide rod 2 (708), the top of the outer wall of the combing plate 1 (701) away from the cylinder 1 (706) is fixedly connected to the lifting seat (709), the lifting seat (709) is slidably set on the surface of the guide rod 2 (708), the material leveling assembly (9) includes two toothless gears (901), the two toothless gears (901) are symmetrically arranged about the combing plate 1 (701), and the outer wall of the two toothless gears (901) close to each other is fixedly connected to the connecting rod (902), the outer wall of one side of the drying hopper (4) is fixedly connected to the mounting plate (8), and the mounting plate (8) is fixedly connected to the outer wall of the drying hopper (4). The outer wall of the mounting plate (8) is fixedly connected to a second motor (903), and the power output shaft of the second motor (903) is connected to the outer wall of one of the toothless gears (901) through a coupling transmission. The surfaces of the two toothless gears (901) are meshed with racks (904), and the racks (904) are slidably arranged in the drying hopper (4). The end of the rack (904) away from the drying hopper (4) is fixedly connected to a support plate (905), and the outer wall of the support plate (905) close to the drying hopper (4) is fixedly connected to a third spring (906), and the end of the spring (906) away from the support plate (905) is fixedly connected to the outer wall of the drying hopper (4). The end of the rack (904) away from the support plate (905) is fixedly connected to a third bracket (906). 07), one end of the bracket three (907) away from the rack (904) is fixedly connected to a fixed disk (908), a circular opening is provided on the bottom surface of the fixed disk (908), one end of the rack (904) away from the support plate (905) is fixedly connected to the bracket four (909), the top surface of one end of the bracket four (909) away from the rack (904) is fixedly connected to the motor three (910), the power output shaft of the motor three (910) is connected to the rotating disk (911) through a coupling transmission, the rotating disk (911) is rotatably arranged at the bottom of the circular opening, the interior of the rotating disk (911) is provided with a plurality of arc grooves (912) distributed in a circumferential array, the interior of the fixed disk (908) is provided with a plurality of strip grooves (913) distributed in a circumferential array,The arc-shaped groove (912) and the strip-shaped groove (913) are arranged corresponding to each other vertically, and a sliding rod (914) is slidably arranged in each corresponding arc-shaped groove (912) and strip-shaped groove (913). A connecting frame (915) is fixedly connected to the outer wall of the top end of the sliding rod (914), and a material leveling rake (916) is fixedly connected to the outer wall of the bottom end of the connecting frame (915). The material leveling rake (916) is slidably arranged below the rotating disk (911).

2. The water content measuring device for a seedling-raising substrate according to claim 1, characterized in that, The moving assembly (6) comprises a fixed plate (601), the fixed plate (601) being fixedly connected to the middle portion of the outer wall of the drying hopper (4), a connecting rod (602) being fixedly connected to the outer wall of the fixed plate (601) on a side away from the drying hopper (4), a U-shaped frame (603) being fixedly connected to the outer wall of the connecting rod (602) on a side away from the fixed plate (601), a moving wheel (604) being rotatably provided inside the U-shaped frame (603), an L-shaped frame (605) being fixedly installed on the inner wall of the drying box (1), and the connecting rod (602) being slidably provided inside the L-shaped frame (605).

3. The water content measuring device for a seedling cultivation substrate according to claim 2, wherein, The outer wall of the L-shaped frame (605) away from the fixed plate (601) is fixedly connected to a spring 1 (606), one end of the spring 1 (606) away from the fixed plate (601) is fixedly connected to the outer wall of the U-shaped frame (603), and the spring 1 (606) is sleeved on the outer side of the connecting rod (602). The bottom surface of the L-shaped frame (605) is fixedly connected to a motor 1 (607), and the power output shaft of the motor 1 (607) is connected to a cam plate (608) through a coupling transmission. The moving wheel (604) is in contact with the outer side wall of the cam plate (608).

4. The water content measuring device for a seedling-raising substrate according to claim 3, wherein The discharge assembly (10) includes an upper sealing plate (1001), which is fixedly connected to the top inner wall of one end of the discharge port of the drying hopper (4), and the top surface of the upper sealing plate (1001) is fixedly connected to a bracket five (1002), the bottom surface of the bracket five (1002) is fixedly connected to a cylinder two (1003), and the bottom surface of the output end of the cylinder two (1003) is fixedly connected to a partition plate (1004), and the partition plate (1004) is slidably arranged on the outer wall of the upper sealing plate (1001) and the inner walls on both sides of the drying hopper (4), and the partition plate (1004) is arranged on the side of the discharge port.

5. A method for measuring the water content of a seedling-raising substrate, using a device for measuring the water content of a seedling-raising substrate as described in claim 4, characterized in that, The steps include: Step 1: Weigh the collected seedling culture medium using a measuring scale (2), open the sealing cover (3), and pour the weighed seedling culture medium into the drying hopper (4) through the feed port; Step 2: Start Motor 1 (607) to make the nursery substrate on the drying hopper (4) flow towards the discharge port side. Comb the nursery substrate into a uniform thickness through the first combing plate (701) and the second combing plate (703). Start Motor 2 (903) and Motor 3 (910), and comb the nursery substrate apart through the uniform material rake (916) to uniformly dry the nursery substrate. Step 3: After drying is completed, stretch and adjust Cylinder 2 (1003) to move the partition plate (1004) upward, and continue to drive Motor 1 (607) to discharge the dried nursery substrate through the discharge port. Then, use the weighing scale (2) to weigh the dried nursery substrate, and measure the water content of the nursery substrate according to the weight change before and after drying.

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