A rice seedling-raising substrate and its preparation device

Abstract

The present invention discloses a rice seedling raising substrate and a preparation device thereof, which relates to the field of rice seedling raising, and comprises a frame and a turning wheel rotatably arranged on the frame for turning over the substrate, and also comprises a walking mechanism for adjusting the position of the turning wheel, wherein the frame is provided with a substrate isolation plate for blocking both sides of the substrate during the turning over of the substrate. The rice seedling raising substrate and a preparation device thereof provided by the present invention controls the rotation of the turning wheel, and adjusts the position of the turning wheel through the walking mechanism to turn over the substrate, and during the turning over process, the substrate splashing to both sides will be blocked by a single-row isolation mechanism to prevent the turned over substrate from falling on the surface of the unturned substrate as much as possible, thereby preventing the second turning over as much as possible, and improving the turning over effect.

Description

Technical Field

[0001] The present invention relates to the field of rice seedling raising, and particularly relates to a rice seedling raising substrate and a preparation device thereof. Background Art

[0002] As is well known, a seedling raising substrate refers to a material that provides the physical and chemical environment required for plant growth during the seedling raising process. It is usually composed of a variety of components mixed together to ensure good drainage, ventilation, and nutrient supply. During the production process, a variety of raw materials need to be piled up for fermentation. In the process of fermentation, in order to achieve uniform fermentation, the raw materials need to be turned over.

[0003] For example, in a Chinese patent document with the authorization announcement number CN205855425U, the announcement date of January 4, 2017, and the name "A Biogas Slurry Turning Machine", it includes a biogas slurry tank. On the left and right sides of the biogas slurry tank, there are parallel side walls. Above the side walls, there are guide rails. A turning machine is movably arranged on the guide rails. The turning machine includes a frame. An operation room and a power room are arranged on the upper part of the frame. A driving mechanism is arranged in the power room. A traveling mechanism and a turning and throwing mechanism are arranged on the lower part of the frame. The turning and throwing mechanism includes a set of symmetrically arranged front supports and rear supports at the bottom of the frame. The front support and the rear support are hinged through a connecting piece. A rotating shaft is arranged between the connecting pieces. Rake teeth are circumferentially staggered on the rotating shaft. The shape of the rake teeth is sickle-shaped, including a straight handle section and a curved arc section. The end of the straight handle section is fixedly connected to the rotating shaft. The end of the curved arc section is ground into a knife edge shape. The turning and throwing mechanism is driven to operate by the driving mechanism. This patent provides a biogas slurry turning machine with simple structure, convenient operation, low energy consumption, uniform stirring, high efficiency, large application range, and long service life.

[0004] The disadvantages of the above-mentioned prior art are as follows: When turning over the raw materials, the piled-up raw materials are turned over row by row by a turning wheel that moves and rotates at the same time. However, during the turning process, the raw materials will splash to both sides, and the turned-over substrate will fall on the surface of the unturned substrate. When turning over the substrate at this position, the already turned-over raw materials will be turned over again, so that they will be pressed under the bottom layer again, thereby reducing the turning effect. Summary of the Invention

[0005] The purpose of the present invention is to provide a rice seedling raising substrate and a preparation device thereof to solve the above-mentioned deficiencies in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A preparation device for a rice seedling raising substrate, comprising a frame and a turning wheel rotatably arranged on the frame for turning the substrate over, and further comprising a traveling mechanism for adjusting the position of the turning wheel, wherein a substrate isolation plate for blocking both sides of the substrate during the substrate turning process is arranged on the frame.

[0008] In the above-mentioned preparation device for a rice seedling raising substrate, protrusions are respectively arranged on the opposite surfaces of the two substrate isolation plates.

[0009] In the above-mentioned preparation device for a rice seedling raising substrate, a baffle is arranged between the two substrate isolation plates.

[0010] In the above-mentioned preparation device for a rice seedling raising substrate, a bottom shoveling mechanism for shoveling up the bottom layer of the substrate is arranged on the substrate isolation plate.

[0011] In the above-mentioned preparation device for a rice seedling raising substrate, the bottom shoveling mechanism comprises a bottom plate arranged between the two substrate isolation plates, and a first shoveling part is arranged on the bottom plate.

[0012] In the above-mentioned preparation device for a rice seedling raising substrate, a second shoveling part is slidably arranged on the first shoveling part, and a first elastic member is arranged between the first shoveling part and the second shoveling part.

[0013] In the above-mentioned preparation device for a rice seedling raising substrate, a chute is formed on the first shoveling part, a sliding connection part is arranged on the second shoveling part, and the sliding connection part is slidably connected with the chute.

[0014] In the above-mentioned preparation device for a rice seedling raising substrate, a cutting edge is slidably arranged on the substrate isolation plate, and the cutting edge has a first state for cutting the substrate and a second state for storage;

[0015] It further comprises a power assembly for driving the cutting edge to switch between the first state and the second state.

[0016] In the above-mentioned preparation device for a rice seedling raising substrate, the power assembly comprises a first transmission rod and a second transmission rod. An installation groove is formed inside the bottom plate. The first transmission rod is slidably arranged in the installation groove, the second transmission rod is rotatably arranged in the installation groove, two ends of the second transmission rod respectively abut against the first transmission rod and the cutting edge, and a second elastic member is arranged between the cutting edge and the substrate isolation plate.

[0017] A rice seedling raising substrate prepared by the above-mentioned preparation device, comprising the following components: 50% of bagasse pith fermentation material, 30% of vermiculite, and 20% of peat.

[0018] In the above technical scheme, the present invention provides a rice seedling raising substrate and a preparation device thereof, which controls the rotation of the pile turning wheel and adjusts the position of the pile turning wheel through a walking mechanism to turn the substrate over. During the turning process, the substrate splashing to both sides will be blocked by a single-row isolation mechanism to prevent the turned substrate from falling on the surface of the unturned substrate as much as possible, thereby preventing the second turning over as much as possible and improving the turning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of the overall structure from another perspective provided by an embodiment of the present invention;

[0022] Figure 3 A front view schematic diagram of the structure provided by another embodiment of the present invention;

[0023] Figure 4 for Figure 3 A schematic diagram of the partial cross-sectional structure at aa in the middle;

[0024] Figure 5 for Figure 3 Schematic diagram of partial cross-section structure at bb in the middle;

[0025] Figure 6 A schematic diagram of the position structure of the second scooping portion when the cutting blade is in the first state provided in yet another embodiment of the present invention.

[0026] Description of reference numerals:

[0027] 1. Frame; 2. Turning wheel; 3. Matrix isolation plate; 4. Protrusion; 5. Baffle; 6. Bottom plate; 7. First scooping part; 8. Second scooping part; 9. First elastic member; 10. Slide groove; 11. Sliding part; 12. Cutting edge; 13. Movable groove; 14. First transmission rod; 15. Second transmission rod; 16. Mounting groove; 17. Second elastic member; 18. Abutment part; 19. Locking rod; 20. Third elastic member; 21. Locking hole; 22. Extension part. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] In the description of the present invention, it is necessary to understand that Figure 4 The position of the middle cutting blade 12 relative to the first transmission rod 14 is on the left, and vice versa. The terms "center", "length", "width", "degree", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] Reference Figures 1-6 A device for preparing a rice seedling raising substrate provided in an embodiment of the present invention comprises a frame 1 and a turning wheel 2 rotatably arranged on the frame 1 for turning over the substrate, and also comprises a walking mechanism for adjusting the position of the turning wheel 2. The frame 1 is provided with a substrate isolation plate 3 for blocking both sides of the substrate during the turning over process.

[0031] Specifically, the frame 1 is in a 冂 shape, and both ends of the pile turning wheel 2 are rotatably arranged on the frame 1 through bearings. The pile turning wheel 2 is cylindrical, and a plurality of turning rods are arranged on its outer circumference. The walking mechanism can be a vehicle body or a three-axis moving mechanism (which can drive the pile turning wheel 2 to move on the horizontal plane and the vertical plane). When turning over, the pile turning wheel 2 is driven to rotate by the existing driving structure such as the reduction motor. At the same time, the position of the pile turning wheel 2 is adjusted by the walking mechanism so that the rotating pile turning wheel 2 can turn over the substrate to improve the fermentation efficiency of the substrate. This is a prior art and will not be described in detail. However, the above-mentioned turning method will cause the turned raw materials to be turned over for the second time so that they are pressed on the bottom layer again. One of the core innovations of the embodiment of the invention is that a matrix isolation plate 3 is arranged on the frame 1. There are two matrix isolation plates 3. The two matrix isolation plates 3 are respectively located at the two ends of the pile turning wheel 2 and between the inner walls of the frame 1 on both sides. They are of rectangular structure, that is, the two sides behind the movement stroke of the pile turning wheel 2 are blocked by the matrix isolation plates 3. The purpose of such arrangement is to control the rotation of the pile turning wheel 2 and adjust the position of the pile turning wheel 2 through the walking mechanism to turn the matrix over. During the turning process, the matrix splashing to both sides will be blocked by the single-row isolation mechanism to prevent the turned matrix from falling on the surface of the unturned matrix as much as possible, thereby avoiding its secondary turning as much as possible and improving the turning effect.

[0032] Since the turned-over substrate becomes fluffier, it will occupy more space. Since both sides of the substrate after turning are blocked by the substrate separator 3, that is, the horizontal area of the substrate after turning will not increase, so the vertical height of the substrate will increase. At this time, a fault will appear between the turned-over substrate and the unturned substrate, so the turned-over substrate will collapse towards the unturned substrate. Further, protrusions 4 are respectively provided on the opposite surfaces of the two substrate separators 3. Specifically, the surface of the protrusion 4 is arc-shaped, and it thickens successively along the direction of the movement stroke of the turning wheel 2, and is close to the middle position of the substrate separator 3. The function of this setting is that the substrate turned over by the turning wheel 2 will be located between the two substrate separators 3, and the substrate on the surface layer will abut against the protrusion 4. Since the protrusion 4 thickens successively along the direction of the movement stroke of the turning wheel 2, it will produce a squeezing effect on the substrate on the surface layer, making the substrate on the surface layer not easy to collapse.

[0033] Further, a baffle 5 is provided between the two substrate separators 3. Specifically, both ends of the baffle 5 are rotatably connected to the inner walls on both sides of the substrate separator 3. The baffle 5 is close to the top position of the substrate separator 3 and is located behind the movement stroke of the turning wheel 2. The function of this setting is that the substrate rolled up higher by the turning wheel 2 will hit the baffle 5, driving the baffle 5 to swing, so that the substrate attached to the baffle 5 will fall quickly.

[0034] When controlling the lowering of the turning wheel 2, in order to avoid damage to the turning rod on the turning wheel 2 caused by contact with the ground, when controlling the lowering of the turning wheel 2, a gap of 3 - 5 cm is left between the turning rod and the ground. The substrate in this part cannot be turned over, and under the action of the segregation effect, the substrate distribution is uneven, thus reducing the fermentation effect of the substrate. Further, a bottom scraping mechanism for shoveling up the bottom substrate is provided on the substrate separator 3. Specifically, the bottom scraping mechanism can be a structure such as a scraper, which is used to shovel up the bottom substrate during the process of substrate turning, so that the bottom substrate is lifted to the height of the turning wheel 2 and is turned over by the turning wheel 2 to improve the fermentation effect of the substrate.

[0035] As an alternative to the above-mentioned scraper for shoveling up the underlying substrate, the bottom shoveling mechanism includes a bottom plate 6 disposed between the two substrate isolation plates 3, and a first shoveling portion 7 is provided on the bottom plate 6. Specifically, an approximately U-shaped structure is formed between the bottom plate 6 and the two substrate isolation plates 3, and the turning wheel 2 is disposed in the internal space therebetween, and the gap between the turning wheel 2 and the upper surface of the bottom plate 6 is fixed, which can be set to be less than 1 cm. The first shoveling portion 7 is an inclined surface provided at the end of the bottom plate 6 and is located in front of the movement stroke of the turning wheel 2. The purpose of such a setting is that when adjusting the vertical height of the turning wheel 2, the substrate isolation plates 3 and the bottom plate 6 are controlled to descend synchronously. When the lower surface of the bottom plate 6 contacts the ground, the descent stops. At this time, when the turning wheel 2 moves horizontally, the first shoveling portion 7 on the bottom plate 6 will shovel up the underlying substrate and move to the upper surface of the bottom plate 6 along the inclined surface of the first shoveling portion 7 during the movement. At this time, since the gap between the turning rod and the bottom plate 6 is always fixed, the turning rod can turn the underlying substrate to the greatest extent without interfering with the ground, so that the turning rod can be protected from damage while turning the substrate.

[0036] Furthermore, a second shoveling portion 8 is slidably disposed on the first shoveling portion 7, and a first elastic member 9 is provided between the first shoveling portion 7 and the second shoveling portion 8. Specifically, a horizontal groove is formed on the first shoveling portion 7, and the second shoveling portion 8 is slidably connected to the horizontal groove. The first elastic member 9 is preferably a spring. One end of the spring is fixedly connected to the side wall of the horizontal groove, and the other end is fixedly connected to the second shoveling portion 8. The first shoveling portion 7 is located behind the movement stroke of the second shoveling portion 8. The purpose of such a setting is that when the bottom plate 6 moves horizontally to shovel up the underlying substrate and encounters agglomerated substrate or stones (hereinafter simply referred to as impurities for the convenience of description), the second shoveling portion 8 will contact it first and cause the second shoveling portion 8 to slide into the horizontal groove and store energy in the first elastic member 9. During the subsequent movement of the second shoveling portion 8, the second shoveling portion 8 will shovel up the impurities to achieve the effect of buffering the shoveling of impurities, so as to avoid damage to the second shoveling portion 8 as much as possible.

[0037] During the movement of the substrate isolation plate 3, when encountering a sunken ground, the substrate at the sunken position cannot be shoveled up, resulting in a turning dead angle. When encountering a slightly raised ground, it will cause interference between the second shoveling part 8 and the raised part, so that the bottom plate 6 cannot continue to move or the bottom plate 6 needs to be lifted by the traveling mechanism to move. As another embodiment of the present invention, a chute 10 is provided on the first shoveling part 7, and a sliding connection part 11 is provided on the second shoveling part 8, and the sliding connection part 11 is slidably connected to the chute 10. Specifically, in this embodiment, the first elastic member 9 is disposed between the chute 10 and the sliding connection part 11. The chute 10 is opened along the inclined surface of the first shoveling part 7. The sliding connection part 11 is slidably connected to the chute 10, and a limiting structure for preventing the two from separating from each other is provided therebetween. When the substrate isolation plate 3 is not in contact with the ground, the lower end of the second shoveling part 8 is lower than the lower surface of the substrate isolation plate 3, and the lower surface of the substrate isolation plate 3 is lower than the lower surface of the bottom plate 6. That is, when the substrate isolation plate 3 abuts against the ground, there is a gap between the bottom plate 6 and the ground for the slightly raised part to pass through. Under the action of the self-weight of the second shoveling part 8 and the elastic force of the first elastic member 9, the second shoveling part 8 is maintained at this position. The function of such a setting is that during the process of controlling the bottom end of the substrate isolation plate 3 to contact the ground, since the lower end of the second shoveling part 8 is lower than the lower surface of the substrate isolation plate 3, the end of the second shoveling part 8 will preferentially abut against the ground. Under the action of the sliding connection between the sliding connection part 11 and the chute 10, the second shoveling part 8 will slide obliquely upward along the inclined surface of the first shoveling part 7 and store energy in the first elastic member 9. The benefits brought by this are as follows: First, when encountering impurities, the first elastic member 9 further contracts to achieve the function of buffering and shoveling. Second, when encountering a sunken position on the ground, the elastic force of the first elastic member 9 is released, so that the second shoveling part 8 slides obliquely downward along the inclined surface of the first shoveling part 7, so that the end of the second shoveling part 8 is inserted into the sunken position and shovels up the substrate at the sunken position. When the second shoveling part 8 subsequently moves upward along the sunken position, it will store energy in the first elastic member 9 again to achieve the automatic reset of the second shoveling part 8. Third, when encountering a slightly raised ground, it will cause the second shoveling part 8 to abut against the slightly raised position, so that the second shoveling part 8 slides obliquely upward along the inclined surface of the first shoveling part 7. When the lower end of the second shoveling part 8 is higher than the top of the slightly raised part, the second shoveling part 8 will pass over the slightly raised part and further store energy in the first elastic member 9 to achieve avoidance (during the subsequent movement, the slightly raised part will pass through the gap between the bottom plate 6 and the ground to achieve avoidance). When the second shoveling part 8 is away from the slightly raised part, a part of the elastic force of the first elastic member 9 is released to drive the second shoveling part 8 to automatically reset.

[0038] Furthermore, a cutting blade 12 is slidably arranged on the matrix isolation plate 3. The cutting blade 12 has a first state for cutting the matrix and a second state for storage. It also includes a power assembly for driving the cutting blade 12 to switch between the first state and the second state. Specifically, an activity groove 13 is opened at one end of the matrix isolation plate 3 close to the turning wheel 2. The cutting blade 12 is slidably arranged in the activity groove 13, and a limiting structure for preventing them from separating is also arranged between the two. The power assembly can be an existing reciprocating driving assembly such as an electric push rod. The function of this setting is that when it is necessary to turn the matrix, the cutting blade 12 is controlled by the power assembly to be in the first state. At this time, when the matrix isolation plate 3 moves horizontally, the cutting blade 12 can cut the matrix to reduce the resistance when the matrix isolation plate 3 moves horizontally. After the matrix is turned over, the cutting blade 12 is controlled by the power assembly to switch from the first state to the second state. At this time, the cutting blade 12 is received inside the activity groove 13 to hide its sharp end, so as to avoid the cutting blade 12 accidentally hurting people as much as possible, thereby improving the safety of the device.

[0039] As an alternative solution for the above-mentioned electric push rod to drive the cutting blade 12 to switch between the first state and the second state, preferably, the power assembly includes a first transmission rod 14 and a second transmission rod 15, and an installation groove 16 is opened inside the base plate 6. The first transmission rod 14 is slidably set in the installation groove 16, and the second transmission rod 15 is rotatably set in the installation groove 16. The two ends of the second transmission rod 15 are respectively abutted against the first transmission rod 14 and the cutting blade 12, and a second elastic member 17 is arranged between the cutting blade 12 and the matrix isolation plate 3. Specifically, a fixed shaft is arranged inside the mounting groove 16, the second transmission rod 15 is rotatably connected to the fixed shaft, and the fixed shaft is eccentrically arranged, that is, the distance between the fixed shaft and the first transmission rod 14 is smaller than the distance between the fixed shaft and the cutting blade 12, the mounting groove 16 is connected to the slide groove 10, the first transmission rod 14 is horizontally slidably arranged in the mounting groove 16, and one end of the first transmission rod 14 abuts against the second transmission rod 15, and the other end extends into the slide groove 10, and an arc surface is arranged on one end located inside the slide groove 10, the arc surface of the first transmission rod 14 is located on the movement stroke of the sliding portion 11, and the second elastic member 14 is arranged on the sliding groove 10. The elastic member 17 is also preferably a spring, one end of which is fixedly connected to the cutting blade 12, and the other end is fixedly connected to the side wall of the movable groove 13. The effect of such a setting is that when the substrate is not turned over, that is, when the substrate isolation plate 3 is away from the ground, the elastic force of the first elastic member 9 makes the sliding portion 11 and the arc end of the first transmission rod 14 away from each other, and under the action of the elastic force of the second elastic member 17, the cutting blade 12 is in the second state, and the two ends of the second transmission rod 15 are always in contact with the cutting blade 12 and the end of the first transmission rod 14, so as to avoid the first transmission rod 14 and the second transmission rod 15 from being in contact with each other as much as possible. The transmission rod 15 is shaken at will. When the substrate is turned over, the substrate isolation plate 3 is controlled to descend. In this process, the second scooping portion 8 will abut against the ground. When the second scooping portion 8 slides upward along the inclined surface of the first scooping portion 7, the sliding portion 11 will slide with the arc-shaped end of the first transmission rod 14, so that the other end of the first transmission rod 14 squeezes the second transmission rod 15, so that the second transmission rod 15 rotates around the fixed axis. Since the other end of the second transmission rod 15 abuts against the cutting blade 12, and the fixed axis is eccentrically arranged, under the action of the lever principle, the second transmission rod 15 can rotate around the fixed axis. A transmission rod 14 moves a short distance to push the cutting blade 12 out of the movable groove 13, so that the cutting blade 12 is passively switched from the second state to the first state, and the second elastic member 17 is charged to cut the substrate. When the substrate is turned over, the substrate isolation plate 3 is lifted. During the lifting process, the elastic force of the first elastic member 9 is released, so that the second scooping portion 8 is automatically reset, and the sliding portion 11 is separated from the arc end of the first transmission rod 14. At the same time, the elastic force of the second elastic member 17 is released to drive the cutting blade 12 to passively switch from the first state to the second state.

[0040] When the second shoveling part 8 encounters a slight depression, the second shoveling part 8 will slide obliquely downward, so that the sliding connection part 11 slides obliquely downward, and the cutting edge 12 will contract partially into the movable groove 13, making the cutting edge 12 unable to cut stably. As another embodiment of the present invention, an abutting part 18 is arranged on the first transmission rod 14, a locking rod 19 is slidably arranged inside the installation groove 16, a third elastic part 20 is arranged between the locking rod 19 and the inner wall of the installation groove 16, the locking rod 19 is located on the movement stroke of the abutting part 18, and a locking hole 21 is formed on the side wall of the cutting edge 12, and the locking rod 19 is located on the movement stroke of the locking hole 21. Specifically, as Figure 4As shown, the locking hole 21 is located on the side wall of the cutting edge 12, and there is an opening on the locking hole 21. The abutting portion 18 is arranged on the side surface of the first transmission rod 14, and its surface is arc-shaped. The locking rod 19 is an elastic telescopic rod (that is, it includes a left section and a right section that are slidably connected to each other, and a spring and other structures are arranged between the two sections so that the locking rod 19 can be axially telescoped). The end away from the cutting edge 12 is also arc-shaped. An extension portion 22 is arranged on the locking rod 19. The third elastic member 20 is also preferably a spring. One end of it is fixedly connected to the extension portion 22, and the other end is fixedly connected to the inner wall of the installation groove 16. A torsion spring (not shown in the figure) is arranged between the second transmission rod 15 and the fixed shaft. The elastic force of the torsion spring makes the second transmission rod 15 tend to rotate clockwise. The purpose of such a setting is that when the cutting edge 12 switches from the second state to the first state, the sliding portion 11 will abut against the first transmission rod 14, so that the first transmission rod 14 slides in the direction of the second transmission rod 15 and stores energy in the torsion spring. And it will make the abutting portion 18 abut against the arc end of the locking rod 19 to provide a force for the locking rod 19 to slide to the left. Since the end of the left section of the locking rod 19 abuts against the side wall of the cutting edge 12 at this time, the left section of the locking rod 19 cannot move. At this time, the right section normally slides to the left. During this process, the third elastic member 20 will be stretched, and at the same time, the whole locking rod 19 will contract and become shorter, and energy will be stored in the locking rod 19. In the subsequent process of the second transmission rod 15 pushing the cutting edge 12 to switch from the second state to the first state, the locking hole 21 will be driven to move synchronously. When the locking hole 21 moves to a position coaxial with the locking rod 19 (at this time, the cutting edge 12 is in the first state), the abutting effect of the side wall of the cutting edge 12 on the left section disappears. At this time, the elastic force of the locking rod 19 is released, so that the left section is inserted into the locking hole 21, thereby playing a locking effect on the cutting edge 12. When encountering a slight depression, the movement stroke of the sliding portion 11 is small, and it cannot make the abutting portion 18 and the locking rod 19 lose the abutting effect. At this time, the left section of the locking rod 19 is always inserted into the locking hole 21 to always lock the cutting edge 12, so as to improve the stability of the cutting edge 12 in the first state. After the substrate is turned over, the control frame 1 is lifted upward. At this time, the elastic force of the first elastic member 9 is released, so as to drive the second shoveling portion 8 to move obliquely downward, and make the sliding portion 11 away from the first transmission rod 14. At this time, the elastic force of the torsion spring is released to push the first transmission rod 14 to slide in the reverse direction. When the first transmission rod 14 drives the abutting portion 18 away from the locking rod 19, the elastic force of the third elastic member 20 is released, thereby driving the locking rod 19 to move to the right to pull out the left section of the locking rod 19 from the locking hole 21 to realize the passive unlocking of the cutting edge 12. At this time, the cutting edge 12 is reset to the second state under the action of the elastic force of the second elastic member 17.

[0041] It should be noted that when the second shoveling part 8 encounters a severe depression, the second shoveling part 8 will slide obliquely downward to the end of the stroke. At this time, the cutting edge 12 will also be unlocked passively, so that the cutting edge 12 switches from the first state to the second state. When the second shoveling part 8 disengages from the severe depression, the second shoveling part 8 will slide in the reverse direction to switch the cutting edge 12 from the second state to the first state again and lock it. When the second shoveling part 8 encounters a protrusion, the sliding joint part 11 will move further obliquely upward. During this process, the width of the sliding joint part 11 will make it always abut against the arc end of the first transmission rod 14 in the subsequent stroke, that is, during this process, the cutting edge 12 is always in the first position.

[0042] Another embodiment of the present invention provides a rice seedling raising substrate prepared by the above-mentioned preparation device, which includes the following components: 50% of bagasse pith fermentation material, 30% of vermiculite, and 20% of peat. Among them, the bagasse pith fermentation material is obtained by mixing bagasse pith and sludge in a volume ratio of 1:1 and fermenting for two months, and controlling the water content at 40%, the pH value at 5-7, and the Ec value at 1000±100.

[0043] Only some exemplary embodiments of the present invention have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A preparation device for a rice seedling-raising substrate, comprising a frame and a turning wheel rotatably arranged on the frame for turning over the substrate, and further comprising a traveling mechanism for adjusting the position of the turning wheel, characterized in that, A substrate isolation plate for blocking both sides of the substrate during the substrate turning process is provided on the frame; A bottom shoveling mechanism for shoveling up the bottom layer of the substrate is provided on the substrate isolation plate; The bottom shoveling mechanism includes a bottom plate disposed between the two substrate isolation plates, and a first shoveling portion is provided on the bottom plate; A second shoveling portion is slidably disposed on the first shoveling portion, and a first elastic member is provided between the first shoveling portion and the second shoveling portion; A sliding groove is formed on the first shoveling portion, a sliding connection portion is provided on the second shoveling portion, and the sliding connection portion is slidably connected to the sliding groove; A cutting edge is slidably disposed on the substrate isolation plate, and the cutting edge has a first state for cutting the substrate and a second state for storage; a power assembly for driving the cutting edge to switch between the first state and the second state is further included; The power assembly includes a first transmission rod and a second transmission rod. An installation groove is formed inside the bottom plate. The first transmission rod is slidably disposed in the installation groove, the second transmission rod is rotatably disposed in the installation groove, two ends of the second transmission rod are respectively abutted against the first transmission rod and the cutting edge, and a second elastic member is provided between the cutting edge and the substrate isolation plate; An abutting portion is provided on the first transmission rod, a locking rod is slidably disposed inside the installation groove, a third elastic member is provided between the locking rod and the inner wall of the installation groove, the locking rod is located on the movement stroke of the abutting portion, a locking hole is formed on the side wall of the cutting edge, and the locking rod is located on the movement stroke of the locking hole.

2. The preparation device of a rice seedling raising substrate according to claim 1, characterized in that, Protrusions are respectively provided on the opposite surfaces of the two substrate isolation plates.

3. The preparation device of a rice seedling-raising substrate according to claim 1, characterized in that, A baffle is provided between the two substrate isolation plates.

4. A rice seedling-raising substrate prepared by the preparation device according to any one of claims 1 to 3, characterized in that, Comprising the following components: 50% of bagasse pith fermentation material, 30% of vermiculite, and 20% of peat.

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