A high temperature sterilization device for seedling culture medium

Abstract

The present invention relates to the technical field of sterilization of seedling substrates, and specifically discloses a high-temperature sterilization device for seedling substrates, comprising a sterilization tank and a high-temperature steam tank, wherein the sterilization tank is provided with an inner tank body for rotation inside, and the seedling substrate to be sterilized is stored inside the inner tank body; the device also comprises: a sterilization mechanism, which is arranged inside the inner tank body, and the sterilization mechanism comprises a steam nozzle connected to the high-temperature steam tank; a mixing mechanism, which comprises a stirring blade and a turning assembly, wherein the stirring blade is arranged in an annular array on the inner wall of the inner tank body and is distributed in a spiral shape, and the turning assembly is vertically arranged in the middle of the inner tank body; a power mechanism is also provided at the bottom of the inner tank body, and the power mechanism comprises a driving device and a transmission mechanism, which is located at the output end of the driving device and is transmission-connected to the inner tank body; the accumulated material inside is dynamically stirred and turned by the stirring blade and the turning assembly, so that the high-temperature steam can quickly diffuse and penetrate, thereby efficiently sterilizing the seedling substrate.

Description

Technical Field

[0001] The invention relates to the technical field of sterilization of seedling cultivation substrates, and particularly discloses a high-temperature sterilization device for seedling cultivation substrates. Background Art

[0002] In the field of agricultural seedling cultivation, high-temperature sterilization of seedling substrates is a key link in ensuring the healthy growth of seedlings. Currently, commonly used high-temperature steam sterilization equipment uses high-temperature steam to kill harmful microorganisms such as pathogens and insect eggs in the substrate by passing steam into a sterilization container. However, this static steam sterilization equipment often has densely packed seedling substrates inside, resulting in uneven steam penetration, many sterilization dead corners, low efficiency, and easy to cause local overheating or incomplete sterilization. Therefore, most of the devices on the market use a mixing mechanism in the sterilization tank to stir the substrate to promote contact between steam and substrate, thereby achieving sterilization.

[0003] However, the current sterilization device, which adds a stirring structure in the sterilization tank, still has certain defects in actual application. That is, its mixing mechanism generally adopts an external stirring structure, which is difficult to form efficient coordination with the sterilization tank. It is difficult to take into account the all-round flipping of the matrix and the uniform penetration of steam during the sterilization operation. The stirring blades are mostly fixed on the inner wall or the central axis of the sterilization tank, and can only achieve stirring in a single direction. The vertical mixing between the matrix layers is insufficient, and the steam has difficulty penetrating deep materials, which makes it easy for the matrix to form dead corners during the sterilization process. In particular, the matrix located at the edge or center area of ​​the tank is not in sufficient contact with the steam, which leads to poor sterilization effect of the device and low efficiency. Summary of the Invention

[0004] The object of the present invention is to provide a high-temperature sterilization device for seedling culture medium to solve the technical problems of poor sterilization effect and low efficiency in the prior art.

[0005] Specifically, the present invention is achieved through the following technical solutions:

[0006] A high-temperature sterilization device for a seedling substrate comprises a sterilization tank and a high-temperature steam tank, wherein an inner tank body is rotatably provided inside the sterilization tank, and the seedling substrate to be sterilized is stored inside the inner tank body; and further comprises:

[0007] A sterilization mechanism, the sterilization mechanism being arranged inside the inner tank body and comprising a steam nozzle connected to the high-temperature steam tank;

[0008] A mixing mechanism, comprising stirring blades and a turnover assembly, wherein the stirring blades are arranged in an annular array on the inner wall of the inner tank and are distributed in a spiral shape, and the turnover assembly is vertically arranged in the middle of the inner tank;

[0009] The bottom of the inner tank body is also provided with a power mechanism, which includes a driving device and a transmission mechanism. The transmission mechanism is located at the output end of the driving device and is in transmission connection with the inner tank body. The driving device is in transmission connection with the flip assembly.

[0010] When the steam nozzle sprays high-temperature steam for sterilization, the driving device drives the flip assembly to work, and drives the inner tank body to rotate through the transmission mechanism, so as to drive the stirring blade and the flip assembly to stir and flip the seedling matrix inside the inner tank body.

[0011] It should be noted that the above technical solution cleverly integrates the mixing mechanism into the rotatable inner tank body, and provides a power mechanism at the bottom of the inner tank body. Since the mixing mechanism includes stirring blades and a flipping assembly, and the power mechanism includes a driving device and a transmission mechanism, and the driving device is used to drive the flipping assembly to work, and the transmission mechanism is used to transmit the power of the driving device to the inner tank body to cause the inner tank body to rotate, when the steam nozzle sprays high-temperature steam to sterilize the seedling matrix stored in the inner tank body, the inner tank body can rotate, and dynamically stir and flip the accumulated content therein through the stirring blades and the flipping assembly, so that the high-temperature steam can quickly diffuse and penetrate into the seedling matrix, thereby efficiently sterilizing the seedling matrix.

[0012] Furthermore, the specific structure of the flip assembly in the above technical solution is described here. The flip assembly includes a flip plate and a motion rod, the flip plate is circumferentially arranged on the outside of the motion rod, the motion rod includes a rotating rod and a sleeve rod that are coaxially sleeved and rotatably matched, the bottom end of the rotating rod passes through the inner tank body and is connected to the output end of the driving device, an annular wave groove is opened on the outside of the rotating rod corresponding to the position of each flip plate, and a moving block is slidably arranged in the annular wave groove, one end of each flip plate is provided with a connecting handle that passes through the inside of the sleeve rod and is movably connected to the moving block, the connecting handle is ball-connected to the sleeve rod through a ball joint at the position where the connecting handle passes through the sleeve rod, and the ball joint is slidably matched with the connecting handle;

[0013] When the rotating rod rotates, the sleeve rod remains stationary.

[0014] It should be understood that the flipping assembly based on the above technical solution realizes the dynamic flipping action of the flipping plate through the coordinated movement mechanism of the rotating rod and the sleeve rod, combined with the ingenious cooperation of the annular wave groove and the ball joint, and solves the technical problem that traditional sterilization equipment is difficult to flip the substrate in the vertical direction during the sterilization process, resulting in the deep seedling substrate being difficult to contact with high-temperature steam, thereby affecting the sterilization effect.

[0015] Furthermore, the middle position of the top of the inner tank body is rotatably connected to the sterilization tank through a rotating support, and a flange is provided at the middle position of the bottom of the inner tank body to be rotatably sealed therewith. The flange is connected to the sleeve rod, and a through hole for the rotating rod to pass through is provided in the middle of the top of the flange, and the flange is rotatably sealed with the rotating rod through the through hole.

[0016] It can be expected that the inner tank body can be rotated by rotating the support and the flange, and the flange is connected to the sleeve rod, and the flange and the rotating rod are rotationally sealed, so that during the rotation of the inner tank body and the rotating rod, the sleeve rod and the flange always remain stationary and will not rotate with them.

[0017] Specifically, there are a plurality of steam nozzles, which are respectively located at positions below the flip plate outside the sleeve rod and attached to the outside of the sleeve rod. The steam nozzles are connected to the high-temperature steam tank through a pipeline.

[0018] The above scheme sets the steam nozzle under the flip plate, which utilizes the dynamic flipping characteristics of the flip plate to push the matrix particles in front of the steam nozzle injection path, thereby forming a relatively loose material gap around the steam nozzle, so that the high-temperature steam ejected from the steam nozzle can quickly penetrate into the seedling matrix, thereby achieving rapid and efficient sterilization of the seedling matrix.

[0019] Furthermore, the pipeline includes a main pipe and multiple branch pipes, one end of the main pipe is connected to the high-temperature steam tank, and the other end passes through the sterilization tank. The multiple branch pipes are arranged in the inner wall layer of the sleeve rod, one end of which is connected to the main pipe, and the other end is connected to the corresponding steam nozzles.

[0020] In this solution, by setting up the main pipe and the multi-way branch pipe, the high-temperature steam in the high-temperature steam tank is transported to the corresponding steam nozzles through the main pipe and the multi-way branch pipe in turn, so that each steam nozzle can stably spray high-temperature steam to ensure that the seedling substrate in different areas of the inner tank body is evenly supplied with high-temperature steam; and it is also necessary to further explain that in this solution, the multi-way branch pipe is passed through the inner wall layer of the sleeve rod, and the metal material of the sleeve rod (preferably stainless steel with good thermal conductivity) is used to construct a "branch-sleeve rod-substrate" heat conduction path, that is, when the high-temperature steam flows through the branch pipe, the heat is conducted to the sleeve rod body through the pipe wall, so that the surface temperature of the sleeve rod and the steam temperature rise synchronously, forming a cylindrical heat radiation source around the central axis, which continuously conducts and heats the substrate within a certain range around the sleeve rod to comprehensively sterilize the seedling substrate in the inner tank body.

[0021] Preferably, the transmission mechanism includes a driving gear, a transmission gear and a driven ring gear that mesh with each other. The driving gear is sleeved on the outside of the output end of the driving device. The transmission gear array is installed around the driving gear and is respectively connected to the flange and the sterilization tank through a gear rod passing through the inside. The driven ring gear is sleeved on the outside of the transmission gear and connected to the bottom edge of the inner tank body.

[0022] Based on the above content, it can be seen that the transmission mechanism in this scheme includes a driving gear, a transmission gear and a driven ring gear, which essentially constitutes a planetary gear set and realizes differentiated reverse rotation between the inner tank body and the rotating rod to construct a three-dimensional circulating seedling matrix flow field inside the inner tank body, thereby decomposing the originally tightly stacked matrix layer into a fluffy loose granular structure, thereby greatly improving the permeability of high-temperature steam, thereby realizing efficient and rapid sterilization of the seedling matrix.

[0023] Furthermore, grooves for installing steam nozzles are provided on the outside of the sleeve rod at positions corresponding to the steam nozzles.

[0024] In this solution, through the embedded installation of the groove, only the nozzle part of the steam nozzle is exposed on the sleeve rod, while the rest of the part is located in the groove and wrapped by the side wall of the groove, thereby reducing the probability of collision between the seedling matrix and the steam nozzle, avoiding the matrix particles directly impacting the steam nozzle and causing damage to it, thereby achieving long-term normal use of the steam nozzle.

[0025] Preferably, a filter is provided at the opening of the groove.

[0026] In this scheme, a filter is set at the opening of the groove, so that the filter acts as a physical barrier and a filtering interface is formed at the opening of the groove, allowing high-temperature steam (gaseous molecules) to pass through unimpeded, while blocking solid impurities from entering the nozzle area of ​​the steam spray group, thereby further preventing particles or fiber impurities in the seedling matrix from clogging the steam nozzle.

[0027] Further preferably, a cleaning part is provided on a side of the filter screen close to the steam nozzle, the cleaning part includes a scraper and a brush attached to the side of the scraper corresponding to the filter screen, and a sliding mechanism is also provided on the groove walls on both sides of the groove, the sliding mechanism includes a vertically opened slide groove, a slider slidingly arranged inside the slide groove, a spring arranged inside the slide groove along the length direction and connected to the slider and the slide groove at both ends respectively, each of the sliders is connected to the corresponding end of the scraper, and the upper part of the slider is connected to the connecting handle of the flip plate by a steel wire rope passing through the wall layer of the sleeve rod.

[0028] This technical solution specially arranges a cleaning piece to cooperate with the flip plate to realize cleaning of the filter and avoid clogging of the filter. That is, when the flip plate flips up and down, its connecting handle drives the slider to slide in the slide groove through the wire rope, and then the slider drives the scraper to move up and down, so that after the scraper moves up and down, the particles in the mesh of the filter and the outer surface of the filter are cleaned and scraped by the brush, so that the cleaning piece can clean the filter periodically at a high frequency during the normal operation of the equipment, thereby avoiding clogging of the filter and affecting the spray diffusion of high-temperature steam, ensuring that the steam nozzle can stably maintain high-temperature steam spray during the sterilization process, so as to provide protection for the sterilization process of the sterilization device and improve the sterilization efficiency of the device.

[0029] More specifically, a feed pipe and a discharge pipe are provided at the top and bottom of the sterilization tank respectively. The bottom end of the feed pipe passes through the rotating support and is connected to the inner tank body, and the top end of the discharge pipe passes through the flange and is connected to the inner tank body.

[0030] In this solution, the feed pipe is set up to facilitate the operator to add the seedling matrix into the inner tank body in the sterilization tank, and the bottom end of the feed pipe passes through the rotating support to ensure that it will not hinder the rotation of the inner tank body. Similarly, the discharge pipe is set up to facilitate the operator to discharge the seedling matrix after high-temperature sterilization, and the top end of the discharge pipe passes through the flange and is connected to the inner tank body, which can also ensure that it will not hinder the rotation of the inner tank body when discharging.

[0031] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0032] 1. The present invention cleverly integrates a mixing mechanism into a rotatable inner tank body, and provides a power mechanism at the bottom of the inner tank body. Since the mixing mechanism includes a stirring blade and a turning assembly, and the power mechanism includes a driving device and a transmission mechanism, and the driving device is used to drive the turning assembly to work, and the transmission mechanism is used to transmit the power of the driving device to the inner tank body to promote the rotation of the inner tank body, when the steam nozzle sprays high-temperature steam to sterilize the seedling substrate stored in the inner tank body, the inner tank body can rotate, and the stirring blade and the turning assembly dynamically stir and turn the accumulated material therein, so that the high-temperature steam can quickly diffuse and penetrate into the seedling substrate, thereby efficiently sterilizing the seedling substrate;

[0033] 2. The turning assembly of the present invention realizes the dynamic turning action of the turning plate through the coordinated motion mechanism of the rotating rod and the sleeve rod, and the ingenious cooperation of the annular wave groove and the ball joint, and ingeniously converts the rotational motion of the rotating rod into the pitching swing of the turning plate. In combination with the circumferential staggered distribution of the turning plates, the seedling matrix is ​​subjected to turning effects from different heights and angles while rotating with the inner tank body, and the interlayer accumulation of the seedling matrix is ​​destroyed, so that the seedling matrix forms a three-dimensional circulating matrix flow field in the inner tank body under the coordinated action of the stirring blades and the turning plates, so as to promote the deep seedling matrix to be continuously turned to the surface to contact the high-temperature steam for sterilization, effectively avoiding the sterilization dead corners in the central area and the edge area of ​​the seedling matrix, and allowing the high-temperature steam to evenly penetrate every corner of the matrix, while improving the sterilization efficiency and ensuring the consistency and thoroughness of the sterilization effect;

[0034] 3. The present invention embeds the steam nozzle in the groove so that only the nozzle portion of the steam nozzle is exposed on the sleeve rod, while the rest of the nozzle is located in the groove and wrapped by the side walls of the groove. This reduces the probability of collision between the seedling substrate and the steam nozzle, avoids substrate particles directly impacting the steam nozzle and causing damage to the steam nozzle, and thus ensures long-term normal use of the steam nozzle.

[0035] 4. The present invention provides a filter at the opening of the groove, so that the filter acts as a "selective barrier" and forms a filtering interface at the opening of the groove, thereby allowing high-temperature steam (gaseous molecules) to pass through unimpeded while blocking solid impurities from entering the nozzle of the steam spray group, thereby further preventing particles or fiber impurities in the seedling substrate from clogging the steam nozzle;

[0036] 5. The present invention further provides a cleaning member to cooperate with the flip plate to clean the filter, thereby preventing the filter from being blocked and affecting the injection and diffusion of high-temperature steam, thereby ultimately achieving efficient and continuous sterilization operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0038] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present invention;

[0039] Figure 2 For the present invention Figure 1 Schematic diagram of the internal structure of the sterilization tank;

[0040] Figure 3 This is a partial structural diagram of the flip assembly of Example 1 of the present invention, which is intended to illustrate the specific structure of the flip assembly;

[0041] Figure 4 This is a schematic diagram of the internal structure of the sterilization tank according to embodiment 2 of the present invention, intended to illustrate the grooves;

[0042] Figure 5 This is a partial structural diagram of a steam nozzle according to Example 2 of the present invention, intended to illustrate the installation state of the steam nozzle and the groove;

[0043] Figure 6 This is a schematic diagram of the partial structure of the cleaning member of Example 3 of the present invention, intended to illustrate its specific mechanism;

[0044] Figure 7 This is a schematic diagram of a top cross-sectional structure of a sleeve rod according to Example 3 of the present invention, which is intended to illustrate the array of steam nozzles on the sleeve rod;

[0045] Figure 8 This is a schematic diagram of the internal structure of the sterilization tank according to Example 4 of the present invention, intended to illustrate the spiral tube;

[0046] Figure 9 This is a schematic diagram of the overall structure of Example 4 of the present invention.

[0047] 1. Stirring blade; 11. Inner tank body; 12. Steam nozzle; 13. Stirring blade; 141. Turning plate; 142. Rotating rod; 143. Sleeve rod; 144. Annular wave groove; 145. Moving block; 146. Connecting handle; 147. Ball joint; 2. Power mechanism; 21. Driving device; 221. Driving gear; 222. Transmission gear; 223. Driven gear ring; 3. Rotating support; 4. Flange; 5. Groove; 51. Filter; 531. Scraper; 532. Chute; 533. Slider; 534. Spring; 535. Wire rope; 6. Pipeline; 61. Main pipe; 62. Branch pipe; 71. Feed pipe; 72. Discharge pipe; 8. Rotating plate; 81. Annular cavity; 82. Transmission cavity; 83. Spiral tube; 9. High-temperature steam tank. DETAILED DESCRIPTION

[0048] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the examples and accompanying drawings. The exemplary embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention. It should be noted that the present invention is already in the actual development and use stage.

[0049] Example 1;

[0050] See also Figures 1 to 3 As shown, this embodiment discloses a high-temperature sterilization device for a seedling substrate, comprising a sterilization tank 1 and a high-temperature steam tank 9. The sterilization tank 1 is provided with an inner tank body 11, and the seedling substrate to be sterilized is stored inside the inner tank body 11; and further comprising:

[0051] The sterilization mechanism is arranged inside the inner tank body 11, and the sterilization mechanism includes a steam nozzle 12 connected to the high-temperature steam tank 9;

[0052] The mixing mechanism includes a stirring blade 13 and a flip assembly. The stirring blades 13 are arranged in a circular array on the inner wall of the inner tank body 11 and are distributed in a spiral shape. The flip assembly is vertically arranged in the middle of the inner tank body 11.

[0053] The bottom of the inner tank body 11 is further provided with a power mechanism 2, which includes a driving device 21 and a transmission mechanism. The transmission mechanism is located at the output end of the driving device 21 and is in transmission connection with the inner tank body 11. The driving device 21 is in transmission connection with the flip assembly.

[0054] When the steam nozzle 12 sprays high-temperature steam for sterilization, the driving device 21 drives the flip assembly to work, and drives the inner tank body 11 to rotate through the transmission mechanism, so as to drive the stirring blade 13 and the flip assembly to stir and flip the seedling substrate inside the inner tank body.

[0055] It should be understood that when the seedling matrix is ​​sterilized, since the seedling matrix itself is in a stacked state after entering the sterilization tank 1, when high-temperature steam is passed through it for sterilization, the high-temperature steam can only contact the seedling matrix at the surface near the steam nozzle 12, and it is difficult to diffuse into the deep seedling matrix, thereby resulting in a poor sterilization effect of the device on the deep matrix and affecting the overall sterilization efficiency of the device;

[0056] Therefore, for the present application, in order to solve this technical problem, the mixing mechanism is cleverly integrated into the rotatable inner tank body 11, and a power mechanism 2 is provided at the bottom of the inner tank body 11, and the mixing mechanism includes a stirring blade 13 and a flipping assembly, and the power mechanism 2 includes a driving device 21 and a transmission mechanism, and the driving device 21 is used to drive the flipping assembly to work, and the transmission mechanism is used to transmit the power of the driving device 21 to the inner tank body 11 to promote the rotation of the inner tank body 11. Therefore, when the steam nozzle 12 sprays high-temperature steam to sterilize the seedling matrix stored in the inner tank body 11, the inner tank body 11 can rotate, and the accumulated material therein is dynamically stirred and flipped by the stirring blade 13 and the flipping assembly, so that the high-temperature steam can quickly diffuse and penetrate into the seedling matrix, thereby achieving efficient sterilization of the deep seedling matrix, to ensure that the overall sterilization effect and sterilization efficiency of the device are effectively improved.

[0057] Specifically, during the sterilization operation, when the high-temperature steam in the high-temperature steam tank 9 enters the steam nozzle 12 and is ejected, the driving device 21 starts to work, and the driving device 21 is preferably a motor, which can rotate after working and quickly drive the inner tank body 11 to rotate through the transmission mechanism, so that the inner tank body 11 rotates and drives the stirring blades 13 to rotate synchronously. Since the annular array of stirring blades 13 is arranged on the inner wall of the inner tank body 11 and is spirally inclined, when the stirring blades 13 rotate, they stir the seedling matrix at the edges of the inner tank body 11 and generate a circumferential thrust and axial lift, so that the seedling matrix located at the edges of the inner tank body 11 can be gradually stirred and pushed to the middle of the inner tank body 11, and at the same time, the inner tank body 11 drives the stirring blades 1 During the rotation operation, the driving device 21 drives the flipping assembly to start working, and after the flipping assembly is in operation, the seedling culture matrix is ​​flipped synchronously during the stirring process through its flipping movement in the vertical direction, thereby continuously adjusting the interlayer position of the seedling culture matrix, further breaking through the traditional single-direction stirring mode and forming a three-dimensional mixing, thereby breaking the static accumulation state of the seedling culture matrix, and making the seedling culture matrix form an all-round rolling and dispersion during the sterilization process, and then when the steam nozzle 12 sprays high-temperature steam, it can further promote the full contact between the seedling culture matrix deep in the inner tank body 11 and the high-temperature steam, avoiding the formation of steam penetration dead corners, thereby achieving dynamic and uniform sterilization of the seedling culture matrix in the inner tank body 11 and improving the sterilization effect and efficiency of the device.

[0058] Furthermore, in the above embodiment, if Figure 2 and Figure 3 The flip assembly includes a flip plate 141 and a motion rod. The flip plate 141 is circumferentially arranged on the outside of the motion rod and is evenly spaced from top to bottom. The motion rod includes a rotating rod 142 and a sleeve rod 143 that are coaxially sleeved and rotatably matched. The bottom end of the rotating rod 142 passes through the inner tank body 11 and is connected to the output end of the driving device 21. An annular wave groove 144 is provided on the outside of the rotating rod 142 corresponding to the position of each flip plate 141, and a moving block 145 is slidably provided in the annular wave groove 144. One end of each flip plate 141 is provided with a connecting handle 146 that passes through the inside of the sleeve rod 143 and is movably connected to the moving block 145. The connecting handle 146 is ball-connected to the sleeve rod 143 through a ball joint 147 at the position where the connecting handle passes through the sleeve rod 143, and the ball joint 147 slides with the connecting handle 146.

[0059] When the rotating rod 142 rotates, the sleeve rod 143 remains stationary.

[0060] During specific implementation, the driving device 21 drives the rotating rod 142 to rotate inside the sleeve rod 143, while the sleeve rod 143 remains stationary, so the annular wave groove 144 outside the rotating rod 142 will rotate accordingly and force the moving block 145 to slide along the trajectory of its groove body. Since the groove body trajectory of the annular wave groove 144 is a sine curve, it has periodic peaks and troughs. Therefore, when the moving block 145 periodically moves to the peak and trough positions, it can drive the connecting handle 146 to produce regular dynamic pitch angle changes on the sleeve rod 143 through the ball joint 147 that slides with it, thereby driving the flip plate 141 to flip up and down.

[0061] To be more specific, when the moving block 145 is at the crest position, the connecting handle 146 is pulled upward, causing the flip plate 141 to tilt downward around the ball joint 147, inserting into the lower seedling matrix and pushing it to spread out in all directions; and when the moving block 145 slides to the trough position, the connecting handle 146 is pressed downward, causing the flip plate 141 to rise upward, forming a throwing force on the upper seedling matrix, thereby converting the rotational motion of the rotating rod 142 into the pitching swing of the flip plate 141, and coordinating with the circumferential staggered distribution of the flip plate 141, the seedling matrix is ​​moved in the inner and outer layers. As the tank body 11 rotates, it is subjected to flipping effects from different heights and angles, and the interlayer accumulation of the seedling matrix is ​​destroyed, so that the seedling matrix forms a three-dimensional circulating matrix flow field in the inner tank body 11 under the coordinated action of the stirring blade 13 and the flip plate 141, so as to promote the deep seedling matrix to be continuously flipped to the surface to contact the high-temperature steam for sterilization, effectively avoiding the sterilization dead corners in the central area and edge area of ​​the seedling matrix, and allowing the high-temperature steam to evenly penetrate every corner of the matrix, while improving the sterilization efficiency, ensuring the consistency and thoroughness of the sterilization effect.

[0062] It can be understood that the flipping assembly based on the above embodiment realizes the dynamic flipping action of the flipping plate 141 through the coordinated movement mechanism of the rotating rod 142 and the sleeve rod 143, and the clever cooperation of the annular wave groove 144 and the ball joint 147, thereby solving the technical problem that traditional sterilization equipment is difficult to flip the matrix in the vertical direction during the sterilization process, resulting in the deep seedling matrix being difficult to contact with high-temperature steam, thereby affecting the sterilization effect.

[0063] Specifically, Figure 2 As shown in the figure, the middle position of the top of the inner tank body 11 is rotatably connected to the sterilization tank 1 through the rotating support 3, and a flange 4 is provided at the middle position of the bottom of the inner tank body 11 to be rotatably sealed therewith. The flange 4 is connected to the sleeve rod 143, and a through hole for the rotation rod 142 to pass through is provided in the middle of the top of the flange 4, and the flange 4 is rotatably sealed with the rotation rod 142 through the through hole.

[0064] It can be expected that this embodiment facilitates the smooth rotation of the inner tank body 11 by rotating the support 3 and the flange 4, and further connects the flange 4 to the sleeve rod 143, and makes the flange 4 and the rotating rod 142 rotationally sealed, so that during the rotation of the inner tank body 11 and the rotating rod 142, the sleeve rod 143 and the flange 4 always remain stationary and will not rotate with them.

[0065] like Figure 2 As shown, there are several steam nozzles 12, which are respectively located at the positions below the flip plate 141 outside the sleeve rod 143. Figure 3 As shown, the steam nozzle 12 is attached to the outside of the sleeve rod 143 and is connected to the high-temperature steam tank 9 through the pipeline 6.

[0066] Through the above embodiment, the steam nozzle 12 is arranged under the flip plate 141, which cleverly utilizes the dynamic flipping characteristics of the flip plate 141 to push the matrix particles in front of the injection path of the steam nozzle 12, thereby forming a relatively loose material gap around the steam nozzle 12, so that the high-temperature steam ejected by the steam nozzle 12 can quickly penetrate into the seedling matrix, thereby achieving rapid and efficient sterilization of the seedling matrix.

[0067] Further, in Figure 2 and Figure 3 As shown in the figure, the pipeline 6 includes a main pipe 61 and a multi-way branch pipe 62. One end of the main pipe 61 is connected to the high-temperature steam tank 9, and the other end passes through the sterilization tank 1. The multi-way branch pipe 62 is arranged in the inner wall layer of the sleeve rod 143, one end of which is connected to the main pipe 61, and the other end is connected to the corresponding steam nozzle 12.

[0068] Specifically, in Figure 1 As shown in FIG, the main pipe 61 is further provided with a delivery pump for continuously pumping the high-temperature steam in the high-temperature steam tank 9 into the inner tank body 11.

[0069] This embodiment further facilitates the high-temperature steam in the high-temperature steam tank 9 to be pumped to the corresponding steam nozzles 12 through the main pipe 61 and the multi-way branch pipe 62 in sequence through the main pipe 61 and the multi-way branch pipe 62, so that each steam nozzle 12 can stably spray high-temperature steam to ensure that high-temperature steam is evenly supplied to the seedling matrix in different areas of the inner tank body 11.

[0070] Furthermore, it is necessary to further explain that in this solution, the multi-branch pipes 62 are provided in the inner wall layer of the sleeve rod 143. The metal material of the sleeve rod 143 (preferably stainless steel with good thermal conductivity) is used to construct a heat conduction path of "branch-sleeve rod 143-substrate". That is, when high-temperature steam flows through the branch pipes 62, heat is conducted to the sleeve rod 143 body through the pipe wall, causing the surface temperature of the sleeve rod 143 to rise synchronously with the steam temperature, forming a cylindrical heat radiation source around the central axis, which continuously conducts heat to the substrate within a certain range (e.g., 5-10 cm) around the sleeve rod 143.

[0071] That is, the deep seedling matrix exposed when the flip plate 141 is flipped (such as the bottom cold material brought out when the flip plate 141 is inserted downward) is preheated, thereby further compensating for the instantaneous blind spot in the spatial coverage of steam injection. Specifically, the flip plate 141 throws the deep low-temperature matrix to the periphery of the sleeve rod 143, and the sleeve rod 143 quickly increases the temperature of this part of the matrix through heat radiation and contact conduction. Then the stirring blade 13 pushes the preheated matrix to the tank wall area to receive the direct injection of the steam nozzle 12, and the high-temperature matrix near the tank wall flows back to the center under the action of spiral stirring, forming a temperature gradient convection with the heating area of ​​the sleeve rod 143, thereby transforming the internal temperature field of the matrix from the traditional "high temperature zone in the center of the nozzle + low temperature zone at the edge" to a three-dimensional uniform heat field of "sleeve rod 143 heat core + steam radiation + mechanical convection", ensuring that the seedling matrix in the inner tank body 11 is fully sterilized.

[0072] Preferably, see Figure 2 The transmission mechanism includes a driving gear 221, a transmission gear 222 and a driven ring gear 223 that mesh with each other. The driving gear 221 is sleeved on the outside of the output end of the driving device. The transmission gear 222 array is installed around the driving gear 221 and is respectively connected to the flange 4 and the sterilization tank 1 through the gear rods penetrated inside. The driven ring gear 223 is sleeved on the outside of the transmission gear 222 and connected to the bottom edge of the inner tank body 11.

[0073] In the above embodiment, the transmission mechanism includes a driving gear 221, a transmission gear 222 and a driven ring gear 223, which essentially constitute a planetary gear set and realize the differential reverse rotation between the inner tank body 11 and the rotating rod 142, so as to construct a three-dimensional circulating seedling medium flow field inside the inner tank body 11;

[0074] Furthermore, when the driving motor drives the rotating rod 142 to rotate, the driving gear 221 sleeved on the output end of the driving motor rotates synchronously, and the driving gear 221 simultaneously engages multiple transmission gears 222. Since the transmission gears 222 are respectively connected to the flange 4 and the sterilization tank 1 through the gear rod, the transmission wheel is constrained so that the transmission gear 222 can only rotate under the drive of the driving gear 221, and the self-rotation of the transmission gear 222 drives the driven ring gear 223 to rotate in the opposite direction of the driving gear 221, and the driven ring gear 223 is fixed to the bottom of the inner tank body 11, thereby causing the inner tank body 11 to rotate in the opposite direction of the rotating rod 142, and forming a two-way motion system of "inner tank body 11 rotation + dynamic flipping of flipping component".

[0075] At the same time, it can be expected that this solution, through the reverse rotation of the inner tank body 11 and the rotating rod 142, causes the relative speeds of the stirring blade 13 and the flipping assembly to be superimposed when stirring and flipping the seedling matrix in the inner tank body 11, so that the stirring blade 13 and the flipping assembly form a higher frequency and larger amplitude relative movement per unit time, thereby realizing three-dimensional mixing and shearing of the seedling matrix in the inner tank body 11, so that the matrix is ​​"torn" into smaller particles under the action of shear force, and the originally tightly stacked matrix layer is decomposed into a fluffy loose granular structure, so as to greatly improve the permeability of high-temperature steam, thereby realizing efficient and rapid sterilization of the seedling matrix.

[0076] Specifically, if Figure 1 and Figure 2 As shown, a feed pipe 71 and a discharge pipe 72 are respectively provided at the top and bottom ends of the sterilization tank 1. The bottom end of the feed pipe 71 passes through the rotating support 3 and is connected to the inner tank body 11, and the top end of the discharge pipe 72 passes through the flange 4 and is connected to the inner tank body 11.

[0077] During specific implementation, it is convenient for the operator to add the seedling matrix into the inner tank body 11 in the sterilization tank 1 through the feed pipe 71, and the bottom end of the feed pipe 71 passes through the rotating support 3 to ensure that it will not hinder the rotation of the inner tank body 11. Similarly, through the setting of the discharge pipe 72, it is convenient for the operator to discharge the seedling matrix after high-temperature sterilization, and the top end of the discharge pipe 72 passes through the flange 4 and is connected to the inner tank body 11, which can also ensure that it will not hinder the rotation of the inner tank body 11 when discharging.

[0078] Example 2;

[0079] like Figures 4 and 5 As shown, this embodiment is a further preferred embodiment of embodiment 1. Specifically, a groove 5 for installing the steam nozzle 12 is further provided on the outside of the sleeve rod 143 and at the position corresponding to each steam nozzle 12. Further, when the steam nozzle 12 is embedded in the groove 5, the arrangement of the branch pipe 62 is different from that of the embodiment 1. Figure 3 , see Figure 4 、 Figure 5 and Figure 6 shown.

[0080] In this embodiment, a groove 5 is provided on the outside of the sleeve rod 143 for installing the steam nozzle 12. The main purpose is to provide basic protection for the steam nozzle 12 to prevent the seedling substrate from being damaged by collision with the steam nozzle 12 due to stirring during high-temperature sterilization. That is, through the embedded installation of the groove 5, only the nozzle part of the steam nozzle 12 is exposed on the sleeve rod 143, and the rest of the part is located in the groove 5 and wrapped by the side wall of the groove 5. This greatly reduces the probability of collision between the seedling substrate and the steam nozzle 12, and prevents substrate particles from directly impacting the steam nozzle 12 and causing damage to the steam nozzle 12, thereby ensuring long-term normal use of the steam nozzle 12.

[0081] Specifically, when the flip plate 141 flips down and inserts into the deep layer of the matrix, it will generate thrust on the material accumulated in front of the nozzle, pushing it to the sides or rear, forming a relatively loose material gap around the steam nozzle 12; and when the flip plate 141 is lifted up to sprinkle the matrix, the lifted matrix spreads to the surroundings under the action of gravity and centrifugal force, further clearing the steam injection path of the steam nozzle 12, ensuring that when the steam nozzle 12 sprays high-temperature steam, an "open area" is formed in front of its nozzle, which facilitates the rapid diffusion of the high-temperature steam sprayed by the steam nozzle 12, so that the high-temperature steam always penetrates into the seedling matrix evenly at a stable flow rate and pressure, ensuring the continuity and uniformity of the sterilization process and improving the sterilization effect.

[0082] In traditional devices, the steam nozzle 12 is often installed exposed on the inner wall of the sterilization tank 1 or the surface of the stirring component. When the matrix is ​​stirred at high speed, matrix particles with larger particle size (such as vermiculite, perlite) or block materials can easily collide with the nozzle, causing the nozzle to deform, the interface to loosen, or even steam leakage, seriously affecting the stability and service life of the equipment. In addition, in traditional sterilization devices, since the seedling matrix is ​​accumulated in the tank body, the seedling matrix will inevitably cover the steam nozzle 12, which will prevent it from smoothly spraying high-temperature steam, and the sprayed high-temperature steam will be hindered when diffusing and penetrating in the seedling matrix, thereby affecting its sterilization effect.

[0083] As the above embodiment, Figure 5 As shown in FIG, this embodiment further provides a filter screen 51 at the opening position of the groove 5.

[0084] It should be understood that the present application provides a filter screen 51 at the opening of the groove 5 so that the filter screen 51 acts as a physical barrier and forms a filtering interface at the opening of the groove 5, thereby allowing high-temperature steam (gaseous molecules) to pass through unimpeded while blocking solid impurities from entering the nozzle portion of the steam spray group, thereby further preventing particles or fiber impurities in the seedling substrate from clogging the steam nozzle 12;

[0085] For example, the pore size of the filter 51 can be designed to be 0.5-1 mm, and the mesh number of the filter 51 can be 60-80 meshes to ensure the smooth passage of high-temperature steam and reduce the pressure loss of high-temperature steam. At the same time, it can effectively intercept impurity particles and fibers in the matrix to prevent them from entering the neat nozzle, causing it to be blocked and unable to be used normally.

[0086] Example 3;

[0087] Further reading Figure 6 and Figure 7 A cleaning member is provided on the side of the filter 51 close to the steam nozzle 12. The cleaning member includes a scraper 531 and a brush attached to the side of the scraper 531 corresponding to the filter 51. A sliding mechanism is also provided on the groove walls on both sides of the groove 5. The sliding mechanism is configured to drive the scraper 531 and the brush to clean the filter 51 when the flip plate 141 flips up and down.

[0088] Specifically, combined Figure 6 and Figure 7 The sliding mechanism includes a vertically opened slide groove 532, a slider 533 slidingly arranged inside the slide groove 532, a spring 534 arranged inside the slide groove 532 along its length direction, and the two ends of the spring are respectively connected to the slider 533 and the slide groove 532, each slider 533 is respectively connected to the corresponding end of the scraper 531, and the upper part of the slider 533 is connected to the connecting handle 146 of the flip plate 141 through a steel wire rope 535 passing through the wall layer of the sleeve rod 143.

[0089] It should be noted that during the high-temperature sterilization process, although the filter 51 can intercept impurities in the matrix, as time goes by, the impurities will continue to accumulate on one side of the filter 51 and eventually cause the filter 51 to become clogged, thereby affecting the normal injection of high-temperature steam. Once the filter 51 is clogged, it needs to be manually shut down for cleaning, which not only increases maintenance costs, but also affects the continuous operation of the equipment.

[0090] Therefore, the present application particularly provides a cleaning member to cooperate with the flip plate 141 to clean the filter 51 and prevent the filter 51 from being blocked. That is, when the flip plate 141 is turned up and down, its connecting handle 146 drives the slider 533 to slide in the slide groove 532 through the wire rope 535, and then the slider 533 drives the scraper 531 to move up and down. After the scraper 531 moves up and down, the brush is used to clean and scrape the particles in the mesh of the filter 51 and on the outer surface of the filter 51. In this way, the cleaning member can periodically clean the filter 51 at a high frequency during the normal operation of the equipment, thereby preventing the filter 51 from being blocked and affecting the injection and diffusion of high-temperature steam.

[0091] Specifically, its working process is as follows: when the flip plate 141 is lifted upward, the wire rope 535 is tightened, pulling the slider 533 to move upward in the chute 532, and stretching the spring 534 in the chute 532, so as to prompt the scraper 531 to move upward and clean the filter 51 through the brush; and when the flip plate 141 is flipped downward, the wire rope 535 is relaxed, and the stretched spring 534 pulls the slider 533 downward under the action of the elastic restoring force, and causes the scraper 531 and the brush to scrape downward along the surface of the filter 51 to remove impurities accumulated on the filter 51. It can be understood that based on the pushing effect of the flip plate 141 of the present application on the matrix in front of the filter 51, when the flip plate 141 is flipped up and down, the matrix particles accumulated on the side close to the surface of the filter 51 can be pushed, so that the matrix particles on the surface of the filter 51 form loose gaps, further reducing the amount of impurities attached to the surface of the filter 51 and reducing the cleaning difficulty of the cleaning part;

[0092] Accordingly, for the present application, based on the fact that the cleaning piece directly acts on the side of the filter 51 close to the steam nozzle 12, it can effectively prevent impurities from entering the steam nozzle 12, thereby ensuring the normal operation of the steam nozzle 12, while the filter 51 intercepts impurities, and the cleaning piece promptly cleans the impurities on the filter 51. Through the mutual cooperation of the two, an effective protective barrier is formed, and the risk of the steam nozzle 12 being blocked is reduced, thereby extending the service life of the steam nozzle 12, and ensuring that the steam nozzle 12 can stably maintain high-temperature steam spraying during the sterilization process, thereby providing protection for the sterilization process of the sterilization device and improving the sterilization efficiency of the device.

[0093] In addition, it is necessary to further explain that, for Example 3, the addition of a cleaning mechanism to the seedling substrate high-temperature sterilization device may appear to increase the complexity of the structure, but this is precisely the necessary technical improvement made by the present application to address the pain points of practical application;

[0094] That is to say, if no cleaning parts are provided, the perlite debris, coconut fiber and other impurities in the seedling matrix will frequently clog the filter 51. Based on actual measurements, it is found that when the existing high-temperature steam sterilization device is in continuous operation for 10 days, an area accounting for about 80% of the surface of the filter 51 will be adhered to a large amount of impurities such as perlite debris and coconut fiber, thereby greatly reducing the amount of steam sprayed from the steam nozzle 12. At this time, manual cleaning is required. This is because after the high-temperature steam is sprayed out of the nozzle, it contacts and sterilizes the seedling matrix, and the moisture in the matrix will evaporate, and form a partially moistened gas to assist at the nozzle outlet, which will lead to the adhesion and blockage of the matrix particles. At this time, manual shutdown for cleaning and maintenance is required, which greatly affects the sterilization efficiency of the device.

[0095] After the cleaning parts are added to the present application, the defects of the traditional sterilization device are eliminated to a certain extent. It has been verified that when the high-temperature steam sterilization device of the present application is in continuous operation for 10 days (for the same seedling matrix), only about 15% of the area on the surface of the filter 51 is attached with a small amount of coconut bran fiber, and there is almost no perlite debris. This is because coconut bran fiber is often slender and adheres to the surface of the filter 51, and some of it will form a tangled shape, making it difficult to achieve thorough cleaning. However, compared with the existing technology, the cleaning parts of the present application are driven by the kinetic energy of the flip plate 141 to achieve automatic periodic cleaning without additional energy consumption, and convert the maintenance of the filter 51 into a self-maintenance action during equipment operation, which has clearly demonstrated the creativity of the present application.

[0096] Example 4;

[0097] Combine Figure 8 and Figure 9 As shown, there is a gap between the inner tank body 11 and the sterilizer 1. A rotating plate 8 is sleeved below the outer portion of the inner tank body 11 and above the power mechanism 2. The rotating sealing plate rotates and seals with the outer wall of the inner tank body 11 and the inner wall of the sterilizer 1 respectively. The rotating plate 8 divides the gap from top to bottom into an annular cavity 81 and a transmission cavity 82. The power mechanism 2 is located in the transmission cavity 82.

[0098] Furthermore, a spiral tube 83 is provided in the annular cavity 81, which is fixedly connected to the outer tank body and spirally distributed on the outside of the inner tank body 11. One end of the spiral tube 83 passes through the rotating support 3 and extends into the inner tank body 11, while the other end of the spiral tube 83 passes through the sterilization tank 1 and is connected to the high-temperature steam tank 9.

[0099] Through the setting of the spiral tube 83, after the high-temperature steam sterilizes the seedling matrix, the steam carrying residual heat can continue to flow back to the high-temperature steam tank 9 along the spiral tube 83 to realize steam recovery. At the same time, the spiral layout of the spiral tube 83 enables the preheated steam to form a heat exchange path outside the inner tank body 11, and continuously radiates heat to the inner tank body 11 through its metal tube wall (such as stainless steel) to ensure that the external temperature of the inner tank body 11 is always maintained at an appropriate temperature, thereby preventing the internal temperature fluctuation of the inner tank body 11 due to heat dissipation, thereby further ensuring the sterilization effect and saving residual heat.

[0100] It should be added that the high-temperature steam in the above embodiments is obtained by heating water to boiling and vaporizing through external heating (electric heating, gas heating or other heat sources) to form high-temperature steam with controllable pressure and temperature. Under actual circumstances, the steam temperature can reach 121°C and the pressure is maintained at around 0.1 MPa to effectively kill harmful microorganisms such as pathogens and insect eggs in the seedling matrix. The high-temperature steam is transported to the high-temperature steam tank 9 through an external transmission pipeline 6. At the same time, based on the disclosure of this text, for those skilled in the art, it is existing technology to set up relevant heating mechanisms in the high-temperature steam tank 9 to maintain the temperature of the high-temperature steam. Therefore, this application will not repeat the specific structure of the high-temperature steam tank 9 here.

[0101] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are schematic diagrams, which serve only to cooperate with the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention.

[0102] At the same time, the terms such as "upper", "lower", "left", "right", "middle", etc. quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should also be regarded as the scope of implementation of the present invention without substantially changing the technical content.

Claims

1. A high-temperature sterilization device for a seedling substrate, comprising a sterilization tank (1) and a high-temperature steam tank (9), wherein an inner tank body (11) is provided inside the sterilization tank (1), and a seedling substrate to be sterilized is stored inside the inner tank body (11), characterized in that: Also includes: A sterilization mechanism, the sterilization mechanism being arranged inside the inner tank body (11), and the sterilization mechanism comprising a steam nozzle (12) connected to the high-temperature steam tank (9); A mixing mechanism, the mixing mechanism comprising stirring blades (13) and a turnover assembly, the stirring blades (13) being arranged in an annular array on the inner wall of the inner tank body (11) and being distributed in a spirally inclined manner, and the turnover assembly being arranged vertically in the middle of the inner tank body (11); A power mechanism (2) is further provided at the bottom of the inner tank body (11), the power mechanism (2) comprising a driving device (21) and a transmission mechanism, the transmission mechanism being located at the output end of the driving device (21) and being in transmission connection with the inner tank body (11), and the driving device (21) being in transmission connection with the flip assembly; When the steam nozzle (12) sprays high-temperature steam to perform a sterilization operation, the driving device (21) drives the flip assembly to work, and drives the inner tank body (11) to rotate in the opposite direction of the flip assembly through the transmission mechanism, so as to drive the stirring blade (13) and the flip assembly to stir and flip the seedling culture medium inside the inner tank body (11); The flip assembly includes a flip plate (141) and a motion rod, the flip plate (141) is circumferentially arranged outside the motion rod, the motion rod includes a rotating rod (142) and a sleeve rod (143) that are coaxially sleeved and rotatably matched, an annular wave groove (144) is provided on the outside of the rotating rod (142) at a position corresponding to each flip plate (141), and a moving block (145) is slidably arranged in the annular wave groove (144), one end of each flip plate (141) is provided with a connecting handle (146) that passes through the inside of the sleeve rod (143) and is movably connected to the moving block (145), and the connecting handle (146) is ball-connected to the sleeve rod (143) through a ball joint (147) at a position where the connecting handle (146) passes through the sleeve rod (143), and the ball joint (147) is slidably matched with the connecting handle (146); The transmission mechanism comprises a driving gear (221), a transmission gear (222) and a driven ring gear (223) that mesh with each other, and form a planetary gear set.

2. A high temperature sterilization device for seedling culture medium according to claim 1, characterized in that: The bottom end of the rotating rod (142) passes through the inner tank body (11) and is connected to the output end of the driving device (21); When the rotating rod (142) rotates, the sleeve rod (143) remains stationary.

3. A high temperature sterilization device for seedling culture medium according to claim 2, characterized in that: The inner tank body (11) is rotatably connected to the sterilization tank (1) via a rotating support (3) at the top middle position, and a flange (4) rotatably sealed with the inner tank body (11) is provided at the bottom middle position of the inner tank body (11). The flange (4) is connected to the sleeve rod (143), and a through hole for the rotating rod (142) to pass through is provided in the top middle of the flange (4), and the flange (4) is rotatably sealed with the rotating rod (142) through the through hole.

4. A high temperature sterilization device for seedling culture medium according to claim 2, characterized in that: The steam nozzles (12) are provided in a plurality and are respectively located at positions below the flip plate (141) outside the sleeve rod (143) and attached to the outside of the sleeve rod (143). The steam nozzles (12) are connected to the high-temperature steam tank (9) via a pipeline (6).

5. A high temperature sterilization device for seedling culture medium according to claim 4, characterized in that: The driving gear (221) is sleeved on the outside of the output end of the driving device, the transmission gear (222) is arrayed around the driving gear (221) and connected to the flange (4) and the sterilization tank (1) respectively through the gear rods passing through the inside, and the driven gear ring (223) is sleeved on the outside of the transmission gear (222) and connected to the bottom edge of the inner tank body (11).

6. A high temperature sterilization device for seedling culture medium according to claim 3, characterized in that: A groove (5) for mounting the steam nozzle (12) is further provided on the outside of the sleeve rod (143) and at a position corresponding to each of the steam nozzles (12).

7. A high temperature sterilization device for seedling culture medium according to claim 6, characterized in that: A filter screen (51) is also provided at the opening of the groove (5).

8. A high temperature sterilization device for seedling culture medium according to claim 7, characterized in that: A cleaning member is further provided on a side of the filter (51) close to the steam nozzle (12), the cleaning member comprising a scraper (531) and a brush attached to the scraper (531) on a side corresponding to the filter (51). A sliding mechanism is further provided on the groove walls on both sides of the groove (5), the sliding mechanism comprising a vertically opened slide groove (532), a slider (533) slidingly arranged inside the slide groove (532), a spring (534) arranged inside the slide groove (532) along the length direction thereof and connected to the slider (533) and the slide groove (532) at both ends respectively, each of the sliders (533) is connected to an end corresponding to the scraper (531), and the upper part of the slider (533) is connected to the connecting handle (146) of the flip plate (141) through a steel wire rope (535) passing through the wall layer of the sleeve rod (143).

9. A high temperature sterilization device for seedling culture medium according to claim 4, characterized in that: The pipeline (6) includes a main pipe (61) and multiple branch pipes (62). One end of the main pipe (61) is connected to the high-temperature steam tank (9) and the other end passes through the sterilization tank (1). The multiple branch pipes (62) are arranged in the inner wall layer of the sleeve rod (143), one end of which is connected to the main pipe (61) and the other end is connected to the corresponding steam nozzle (12).

10. A high temperature sterilization device for seedling culture medium according to claim 3, characterized in that: A feed pipe (71) and a discharge pipe (72) are provided at the top and bottom of the sterilization tank (1), respectively. The bottom end of the feed pipe (71) passes through the rotating support (3) and is connected to the inner tank body (11), and the top end of the discharge pipe (72) passes through the flange (4) and is connected to the inner tank body (11).

Images