CN111467538A

CN111467538A - Seedling tray disinfection device and disinfection method thereof

Info

Publication number: CN111467538A
Application number: CN202010431781.5A
Authority: CN
Inventors: 周建云; 余佳斌; 杨双剑; 曾陨涛; 刁朝强; 赵宏; 廖勇; 黄宁; 刘红峰
Original assignee: Guiyang Office of Guizhou Tobacco Corp
Current assignee: Guiyang Office of Guizhou Tobacco Corp
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2020-07-31

Abstract

The invention discloses a seedling tray disinfection device and a disinfection method thereof, wherein the disinfection device comprises: a frame; the disinfection box body is arranged on the rack and is provided with a disinfection channel with two open ends; the bearing conveying channel is arranged in the disinfection channel in a penetrating mode, and two ends of the bearing conveying channel extend out of openings at two ends of the disinfection channel; the first water gun nozzles are arranged at the upper part in the disinfection channel and face the upper surface of the bearing conveying channel; the second water gun nozzles are arranged at the lower part in the disinfection channel and face the lower surface of the bearing conveying channel; wherein, along with bear the conveyer belt and take the seedling tray process the disinfection passageway, it is a plurality of first squirt shower nozzle with the second squirt shower nozzle sprays disinfection liquid respectively on the tow sides of seedling tray, can spray the disinfection to two upper and lower faces of seedling tray simultaneously when seedling tray process disinfection passageway, and not only the disinfection is more thorough, improvement disinfection efficiency that moreover can be very big.

Description

Seedling tray disinfection device and disinfection method thereof

Technical Field

The invention relates to a seedling tray disinfection device and a disinfection method thereof, and belongs to the technical field of seedling tray disinfection.

Background

In the flue-cured tobacco seedling raising process, thorough disinfection is required for new and old floating trays to ensure that the seedling raising trays do not carry viruses to enter a seedling shed, and prevent tobacco seedlings from being infected and causing diseases. The existing disinfection mode comprises manual disinfection and machine disinfection, wherein the manual disinfection is that a breeding team manually uses brushes, disinfectant and other manual operations to clean the seedling-raising tray, the efficiency of the mode is high, the efficiency of the mode is low, the seedling-raising tray cleaned by each person per hour is only dozens, and the substrate or root hair is easily reserved at the bottom of the seedling-raising tray, so that the subsequent normal seedling raising is easily influenced. The machine disinfection has the conveyer to carry, and reuse squirt shower nozzle washes sterile mode from the top, however this kind of mode once can only disinfect to the one side of educating seedling tray, if needs secondary disinfection, still need the upset to educate seedling tray, disinfects the another side again, and work efficiency is still lower. In addition, the existing machine sterilization can not completely and comprehensively sterilize the seedling raising tray, which can also affect the seedling raising effect, for example, the applicant finds that the seedlings are not orderly for many times.

Disclosure of Invention

Based on the above, the invention provides the seedling tray disinfection device and the disinfection method thereof, which can thoroughly disinfect the front side and the back side of the seedling tray at one time, can greatly improve the disinfection efficiency, and overcomes the defects of the prior art.

The technical scheme of the invention is as follows: a nursery site sterilizing device comprising:

a frame;

the disinfection box body is arranged on the rack and is provided with a disinfection channel with two open ends;

the bearing conveying channel is arranged in the disinfection channel in a penetrating mode, and two ends of the bearing conveying channel extend out of openings at two ends of the disinfection channel;

the first water gun nozzles are arranged at the upper part in the disinfection channel and face the upper surface of the bearing conveying channel;

the second water gun nozzles are arranged at the lower part in the disinfection channel and face the lower surface of the bearing conveying channel;

wherein, along with bear the conveyer belt and bring the dish of growing seedlings through the disinfection passageway, a plurality of first squirt shower nozzle with the second squirt shower nozzle sprays disinfection liquid respectively on the tow sides of the dish of growing seedlings.

In one example, the carrying conveying channel is obliquely arranged along the width direction of the carrying conveying channel, the jet of the first water gun nozzle is perpendicular to the upper surface of the carrying conveying channel, and the jet of the second water gun nozzle is perpendicular to the lower surface of the carrying conveying channel.

In one example, the bearing conveying channel is a power roller conveyor, and the spraying direction of the second water gun spray heads faces to the gap between adjacent power rollers, so that the disinfection liquid sprayed by the second water gun spray heads passes through the gap and is sprayed onto the lower surface of the seedling raising tray.

In one example, a row of auxiliary rollers are arranged at intervals along the length direction of the power roller conveyor at the lower end side of the power roller conveyor so as to block and limit the movement of the seedling raising tray in the power roller conveyor.

In one example, the sterilizing device for the nursery site further includes:

the disinfection water tank is arranged on the rack and is used for containing disinfection liquid;

and the water pump is arranged in the disinfection water tank and is used for pumping the disinfection liquid in the disinfection water tank to the first water gun nozzle and the second water gun nozzle.

In one example, the bottom of the disinfection channel is formed with a liquid collection channel with a large upper end and a small lower end, and the lower end of the liquid collection channel is communicated with the disinfection water tank.

In one example, a filter screen which can be movably inserted is arranged in the liquid collecting channel to filter the liquid entering the disinfection water tank.

In one example, the sterilizing device for the nursery site further includes:

the disinfection water tank is provided with a first inlet and a second inlet;

the disinfectant tank is arranged on the rack and is connected with the first inlet through a first pipeline, disinfectant can be guided into the disinfectant tank by the disinfectant tank, and a first valve is arranged on the first pipeline;

and the supplementary water tank is arranged on the rack and is connected with the second inlet through a second pipeline, the supplementary water tank can guide water into the disinfection water tank, and a second valve is arranged on the second pipeline.

In one example, the sterilizing device for the nursery site further includes:

the liquid level detection sensor is arranged in the disinfection water tank and is used for detecting the liquid level of the disinfection liquid;

the concentration detection sensor is arranged in the disinfection water tank and used for detecting the concentration of the disinfection liquid;

and the liquid level detection sensor and the concentration detection sensor are respectively electrically connected with the controller, the controller is electrically connected with the control ends of the first valve and the second valve, and the controller controls the actions of the first valve and the second valve.

The invention also provides a method for disinfecting the seedling tray disinfecting device, which comprises the following steps:

s1, placing the seedling raising tray on the bearing conveying channel, and enabling the seedling raising holes on the seedling raising tray to face the bearing conveying channel;

s2, the seedling tray is carried by the bearing conveying channel to move forwards, and when the seedling tray passes through the disinfection channel, disinfection liquid is sprayed on the front surface and the back surface of the seedling tray by the first water gun spray heads and the second water gun spray heads respectively, so that disinfection is completed.

The invention has the beneficial effects that: during the disinfection, earlier will treat sterile seedling tray of growing seedlings and keep flat on bearing the conveying way, then bear the conveying way and take seedling tray of growing seedlings to move forward constantly, along with bearing the conveying way and taking seedling tray of growing seedlings through the disinfection passageway, a plurality of first squirt shower nozzles and second squirt shower nozzle are respectively with the disinfectant fluid jet on seedling tray's tow sides, and the seedling tray of growing seedlings is carried to going away after the disinfection. Because the squirt shower nozzle is all installed in the upper and lower both sides that bear the weight of the conveying way, consequently can spray the disinfection to two upper and lower faces of educating the seedling tray simultaneously when educating the seedling tray through disinfection passageway, not only disinfect more thoroughly, improvement disinfection efficiency that moreover can be very big.

In addition, the bearing conveying channel is obliquely arranged along the width direction, the spray of the first water gun spray head is perpendicular to the upper surface of the bearing conveying channel, the spray of the second water gun spray head is perpendicular to the lower surface of the bearing conveying channel, the seedling raising tray is in an oblique state during moving and disinfecting, and the water gun spray heads on the upper side and the lower side are perpendicular to the surface of the seedling raising tray, so that a large amount of disinfectant can flow down along the oblique direction of the seedling raising tray when the seedling raising tray is disinfected, the spray of the water gun spray heads on the lower side cannot be influenced, and the disinfecting effect can be improved.

Simultaneously, the setting can block and will educate seedling tray's activity restriction in power roller conveyer at power roller conveyer's low distolateral supplementary roller to make moving in-process educate seedling tray and be located power roller conveyer's inside all the time, and then the comprehensive thorough disinfection to educating seedling tray bottom surface can be realized to the second squirt shower nozzle.

Drawings

FIG. 1 is a front view of a sterilizing apparatus for a nursery site according to an embodiment of the present invention;

FIG. 2 is a side view of a sterilizing apparatus for a nursery site according to an embodiment of the present invention;

FIG. 3 is an enlarged view of the structure within the disinfection channel of FIG. 2;

FIG. 4 is a schematic view of a sterilizing water tank;

description of reference numerals:

10 a frame and 11 travelling wheels;

20 a disinfection box body, 21 a liquid collecting channel and 22 a filter screen;

30 bearing conveying paths, 31 power rollers, 32 frame bodies and 33 auxiliary rollers;

40 a first water gun nozzle, 41 an upper support;

50 second water gun nozzles and 51 lower supports;

60 a disinfection water tank, 61 a discharge port, 62 a liquid inlet, 63 a transparent observation window, 64 a first inlet, 65 a second inlet and 66 a water pump;

70 disinfectant liquid tank, 71 first pipeline, 72 first valve and 73 concentration detection sensor;

80 a supplementary water tank, 81 a second pipeline, 82 a second valve and 83 a liquid level detection sensor.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, a nursery site disinfection device according to an embodiment of the present invention includes a frame 10, a disinfection box 20, a carrying channel 30, a first water gun nozzle 40, a second water gun nozzle 50, a disinfection water tank 60, a disinfection liquid tank 70, a supplementary water tank 80, a liquid level detection sensor 83, and a concentration detection sensor 73.

The frame 10 mainly plays a supporting role, and is used for supporting the disinfection box 20, the carrying conveying channel 30, the first water gun nozzle 40, the second water gun nozzle 50 and other parts. The bottom of the frame 10 is provided with a travelling wheel 11, and the frame 10 can be moved through the travelling wheel 11, so that the disinfection at different positions can be facilitated.

And a sterilizing box body 20 for providing a sterilizing place for the seedling-raising tray. The sterilizing compartment 20 has a sterilizing passage opened at both ends, which is horizontally installed on the housing 10 such that both ends of the sterilizing passage are opened to be laid flat, one end of the sterilizing passage is opened as an inlet, and the other end of the sterilizing passage is opened as an outlet.

And the bearing conveying channel 30 is used for conveying the seedling raising tray. The carrying channel 30 is arranged in the disinfection channel in a penetrating way, and both ends of the carrying channel extend out of openings at both ends of the disinfection channel, wherein an inlet station is reserved at one end extending out of the inlet, and a collecting station is reserved at one end extending out of the outlet.

The first water gun nozzles 40 are mainly used for spraying disinfectant. Specifically, the plurality of first gun sprayers 40 are mounted at an upper portion within the disinfection tunnel and face the upper surface of the carrier transport path 30, e.g., the plurality of first gun sprayers 40 may be secured within the disinfection tunnel by upper mounts 41. A plurality of first squirt shower nozzles 40 can set up into the multirow, and the length of every row matches with the width that bears conveyer way 30 to can carry out thorough disinfection with the upper surface of educating seedling tray.

And the plurality of second water gun nozzles 50 are mainly used for spraying disinfectant. Specifically, a plurality of second gun jets 50 are mounted at a lower portion within the disinfection tunnel and face a lower surface of the carrying conveyor 30, e.g., the plurality of second gun jets 50 may be fixed within the disinfection tunnel by lower mounts 51. A plurality of second squirt shower nozzles 50 can be set into the multirow, and the length of every row matches with the width that bears conveyer way 30 to can carry out thorough disinfection with the lower surface of educating seedling tray.

During the disinfection, earlier will treat sterile seedling tray of growing seedlings and keep flat at the entering station that bears transfer passage 30, then bear transfer passage 30 and take seedling tray of growing seedlings to constantly remove forward, along with bear transfer passage 30 and take seedling tray of growing seedlings through the disinfection passageway, a plurality of first squirt shower nozzles 40 and second squirt shower nozzle 50 are respectively with the disinfectant fluid jet on seedling tray's tow sides, and seedling tray is carried to the collection station after the disinfection, and seedling tray can be taken away from the collection station. Because the squirt shower nozzle is all installed in the upper and lower both sides that bear transfer passage 30, consequently can spray the disinfection to two upper and lower faces of educating the seedling tray simultaneously when educating the seedling tray through disinfection passageway, not only disinfect more thoroughly, improvement disinfection efficiency that moreover can be very big.

The applicant practices and finds that if the bearing conveying channel 30 adopts a flat structure, the disinfectant sprayed by the first water gun spray heads 40 can fall from the lower part of the bearing conveying channel 30 after disinfection, so that the spraying of the second water gun spray heads 50 is influenced, the disinfection effect is further influenced, and the disinfection below the seedling raising tray is incomplete. This application will bear the weight of transfer passage 30 and set up along its width direction slope, the upper surface that the transfer passage 30 was born to the perpendicular to of the injection of first squirt shower nozzle 40, and the lower surface that the transfer passage 30 was born to the perpendicular to of the injection of second squirt shower nozzle 50. The advantage of this kind of structure lies in, is in the tilt state when moving the disinfection owing to educate seedling tray, and the equal perpendicular to its surface of squirt shower nozzle of upper and lower both sides, consequently educates seedling tray when disinfected, and a large amount of antiseptic solutions can flow down along educating seedling tray's incline direction to can not hinder the injection that influences downside squirt shower nozzle, and then can improve disinfection effect.

In one example, bear transfer passage 30 and be power roller 31 conveyer, power roller 31 conveyer comprises a plurality of power rollers 31 and support body 32, and power roller 31 conveyer is through the high different support slope installation in both sides, and the injection direction of second squirt shower nozzle 50 is towards the clearance department between the adjacent power roller 31 for on the lower surface of educating seedling tray is sprayed to the disinfection liquid of second squirt shower nozzle 50 spun after passing the clearance, and then the completion educates the disinfection of seedling tray bottom surface.

In one example, be equipped with one row of supplementary roller 33 along its length direction interval at the low side of power roller 31 conveyer, these supplementary rollers 33 can rotate to block and will educate seedling tray's activity restriction in power roller 31 conveyer, thereby make the seedling tray that removes the in-process be located the inside of power roller 31 conveyer all the time, and then second squirt shower nozzle 50 can realize the comprehensive thorough disinfection to educating seedling tray bottom surface.

And the disinfection water tank 60 is used for containing disinfection liquid. A disinfectant tank 60 is mounted on the frame 10 to provide disinfectant required for spraying by the first and second water gun spray heads 40 and 50. Install water pump 66 in disinfection water tank 60, the entrance point of water pump 66 immerses in the antiseptic solution in disinfection water tank 60, and the exit end of water pump 66 is linked together through pipeline and first squirt shower nozzle 40 and second squirt shower nozzle 50 to the disinfectant in with disinfection water tank 60 is pumped for first squirt shower nozzle 40 and second squirt shower nozzle 50.

In one example, the sterilizing water tank 60 is installed below the sterilizing tank body 20, a liquid collecting channel 21 with a large top and a small bottom is formed at the bottom of the sterilizing channel, and the lower end of the liquid collecting channel 21 is communicated with the sterilizing water tank 60, so that the sterilizing liquid sprayed from the first water gun nozzle 40 and the second water gun nozzle 50 flows back to the sterilizing water tank 60 again, and the recycling is achieved.

In one example, a removably insertable filter screen 22 is disposed within the fluid collection channel 21 to filter fluid entering the sanitizer tank 60. Specifically, a socket may be provided at one side of the liquid collecting channel 21, and the filter net 22 may be inserted into the socket, so that the liquid returned into the sterilizing water tank 60 is filtered. When the filter residue is more, the filter screen 22 can be taken out for cleaning. The filter pore size of filter screen 22 may be determined as desired.

In one example, the bottom of the sterilizing water tank 60 is provided with a drain 61, and a manual valve is provided at the drain 61, so that the liquid can be discharged through the drain 61 after the sterilization is completed or the sterilizing liquid is no longer standardized. A liquid inlet 62 is provided at the upper part of the disinfection tank 60, and a manual valve is provided at the liquid inlet 62, through which liquid inlet 62 the disinfection liquid can be fed into the disinfection tank 60 before disinfection, for example by introducing the disinfection liquid through a pipe or a funnel.

In one example, the sterilization water tank 60 has a first inlet 64 and a second inlet 65, both of which inlet ports 62 are disposed at an upper portion of the sterilization water tank 60.

The makeup water tank 80 is mainly used to replenish water in the sterilizing water tank 60. Specifically, the makeup water tank 80 is installed on the housing 10, for example, above the sterilizing compartment 20, and the makeup water tank 80 is used to contain water. The supplementary water tank 80 is connected to the second inlet 65 through a second pipe 81, and the supplementary water tank 80 can guide water into the sterilizing water tank 60, thereby performing a function of adding sterilizing liquid. A second valve 82 is installed on the second pipe 81, and the second valve 82 may be a solenoid valve for water.

The disinfectant tank 70 is mainly used for adjusting the concentration of the disinfectant in the disinfectant tank 60. Specifically, the disinfectant tank 70 is mounted on the frame 10, for example, above the disinfectant tank 20, and the disinfectant tank 70 is used for containing a high concentration of disinfectant. The disinfectant tank 70 is connected to the first inlet 64 through a first pipe 71, and the disinfectant tank 70 can introduce disinfectant into the disinfectant tank 60 to increase the concentration of the disinfectant in the disinfectant tank 60, thereby satisfying the concentration required for disinfection. A first valve 72 is installed in the first pipe 71, and the first valve 72 may be a solenoid valve for water.

And the liquid level detection sensor 83 is used for detecting the liquid level of the disinfectant. Specifically, the liquid level detection sensor 83 is installed in the sterilizing water tank 60.

And a concentration detection sensor 73 for detecting the concentration of the disinfecting liquid. Specifically, the concentration detection sensor 73 is installed in the sterilizing water tank 60.

The controller, the liquid level detection sensor 83 and the concentration detection sensor 73 have signal output ports electrically connected to signal input ports of the controller, respectively, and are electrically connected to control ports of the first valve 72 and the second valve 82, so that the controller controls the operation of the first valve 72 and the second valve 82.

In the disinfection process, the disinfection liquid can spill disinfection water tank 60 outside, perhaps adhere to on educating seedling tray to lead to the diminishing of antiseptic liquid, concentration also can reduce gradually simultaneously. Therefore, a normal liquid level range value and a normal concentration range value of the disinfectant in the disinfectant tank 60 are preset, when the liquid level detection sensor 83 detects that the actual liquid level in the disinfectant tank 60 is lower than the set normal liquid level range value, the controller controls the second valve 82 to be opened, water in the supplementing water tank 80 enters the disinfectant tank 60, when the liquid level reaches the normal liquid level range value, the controller controls the second valve 82 to be closed to stop water supplementing, at the moment, the concentration detection sensor 73 detects the concentration value of the disinfectant, when the concentration detection sensor 73 detects that the actual concentration in the disinfectant tank 60 is lower than the set normal concentration range value, the controller controls the first valve 72 to be opened, high-concentration water in the disinfectant tank 70 enters the disinfectant tank 60, and when the liquid level reaches the normal concentration range value, the controller controls the first valve 72 to be closed to stop the liquid supplementing. Because the antiseptic solution in the disinfection water tank 60 is pumped by water pump 66 in real time and is given first squirt shower nozzle 40 and second squirt shower nozzle 50 and wash seedling tray, consequently the antiseptic solution in the disinfection water tank 60 is rocked, and the antiseptic solution of high concentration and the liquid in the disinfection water tank 60 need not special stirring and mixes this moment, can realize the homogeneous mixing.

In one example, the amount of water to be added can be obtained according to the level value after the addition of water and the level value before the addition of water detected by the level detection sensor 83, and the amount of the high-concentration disinfection solution required to be added can be converted according to the normal concentration range value.

In one example, a transparent viewing window 63 is provided at one side of the sterilizing water tank 60 so that the sterilizing liquid in the sterilizing water tank 60 can be viewed from the outside.

In one example, a graduated size is provided at the transparent viewing window 63 for measuring the volume or depth of liquid in the sanitizer tank 60 for the operator to decide whether or not the sanitizer needs to be added.

The invention also provides a method for sterilizing by using the seedling tray sterilizing device, which comprises the following steps:

and S1, placing the seedling raising tray on the bearing conveying channel 30, and enabling the seedling raising holes on the seedling raising tray to face the bearing conveying channel 30.

S2, the seedling tray is driven by the bearing conveying channel 30 to move forwards, and when passing through the disinfection channel, the disinfection liquid is sprayed on the front surface and the back surface of the seedling tray by the first water gun spray heads 40 and the second water gun spray heads 50 respectively, so that disinfection is completed.

In the invention, the seedling holes on the seedling tray face downwards, so that disinfectant cannot be gathered in the seedling holes during disinfection, and the problem that the disinfectant falls downwards in a line to further hinder the spraying of the second water gun nozzle 50 is solved; and secondly, the disinfectant is enabled to flow back as much as possible, and the repeated utilization rate is improved.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a educate seedling tray degassing unit which characterized in that includes:

a frame (10);

the disinfection box body (20) is arranged on the rack (10), and the disinfection box body (20) is provided with a disinfection channel with two open ends;

the bearing conveying channel (30) is arranged in the disinfection channel in a penetrating mode, and two ends of the bearing conveying channel extend out of openings at two ends of the disinfection channel;

a plurality of first water gun nozzles (40) arranged at the upper part in the disinfection channel and facing to the upper surface of the bearing conveying channel (30);

a plurality of second water gun nozzles (50) arranged at the lower part in the disinfection channel and facing to the lower surface of the bearing conveying channel (30);

the first water gun nozzles (40) and the second water gun nozzles (50) spray disinfection liquid on the front surface and the back surface of the seedling raising plate respectively along with the seedling raising plate passing through the disinfection channel under the driving of the bearing conveying channel (30).

2. A nursery tray sterilizing device according to claim 1, wherein the carrying conveyor (30) is inclined in a width direction thereof, and the first water gun spray heads (40) spray perpendicularly to an upper surface of the carrying conveyor (30), and the second water gun spray heads (50) spray perpendicularly to a lower surface of the carrying conveyor (30).

3. The nursery tray sterilizing apparatus according to claim 2, wherein the carrying conveyor (30) is a power roller (31) conveyor, and the spraying direction of the second water gun spray heads (50) is toward the gap between the adjacent power rollers (31), so that the sterilizing liquid sprayed from the second water gun spray heads (50) is sprayed onto the lower surface of the nursery tray after passing through the gap.

4. A sterilization apparatus for nursery trays according to claim 2, wherein a row of auxiliary rollers (33) is provided at the lower end side of the power roller (31) conveyor at intervals along the length direction thereof to block and restrict the movement of the nursery trays within the power roller (31) conveyor.

5. A sterilization apparatus for nursery trays according to claim 1, further comprising:

the disinfection water tank (60) is arranged on the rack (10) and is used for containing disinfection liquid;

a water pump (66) disposed in the sterilizing water tank (60) to pump the sterilizing liquid in the sterilizing water tank (60) to the first and second water gun nozzles (40, 50).

6. A sterilization apparatus for nursery trays according to claim 5, wherein a liquid collecting channel (21) having a large top and a small bottom is formed at the bottom of the sterilization channel, and the lower end of the liquid collecting channel (21) is communicated with the sterilization water tank (60).

7. A nursery site disinfection device as claimed in claim 6, characterized in that a filter screen (22) is movably inserted in said liquid collection channel (21) to filter the liquid entering said disinfection tank (60).

8. A sterilization apparatus for nursery trays according to claim 5, further comprising:

the sterilizing water tank (60) having a first inlet (64) and a second inlet (65);

the disinfectant tank (70) is arranged on the rack (10), the disinfectant tank (70) is connected with the first inlet (64) through a first pipeline (71), disinfectant can be introduced into the disinfectant tank (60) through the disinfectant tank (70), and a first valve (72) is arranged on the first pipeline (71);

and the supplementary water tank (80) is arranged on the rack (10), the supplementary water tank (80) is connected with the second inlet (65) through a second pipeline (81), the supplementary water tank (80) can guide water into the sterilizing water tank (60), and a second valve (82) is arranged on the second pipeline (81).

9. A sterilization apparatus for nursery trays according to claim 8, further comprising:

a liquid level detection sensor (83) arranged in the disinfection water tank (60) and used for detecting the liquid level of the disinfection liquid;

a concentration detection sensor (73) disposed in the sterilizing water tank (60) for detecting a concentration of the sterilizing liquid;

and the liquid level detection sensor (83) and the concentration detection sensor (73) are respectively electrically connected with the controller, the controller is electrically connected with the control ends of the first valve (72) and the second valve (82), and the controller controls the actions of the first valve (72) and the second valve (82).

10. A method for sterilizing a nursery site using the sterilizing apparatus for a nursery site according to any one of claims 1 to 9, comprising the steps of:

s1, placing the seedling raising tray on the bearing conveying channel (30) and enabling the seedling raising holes on the seedling raising tray to face the bearing conveying channel (30);

s2, the seedling tray is driven by the bearing conveying channel (30) to move forwards, and when the seedling tray passes through the disinfection channel, disinfection liquid is respectively sprayed on the front surface and the back surface of the seedling tray by the first water gun spray heads (40) and the second water gun spray heads (50), so that disinfection is completed.