A soil steam sterilization apparatus

Abstract

This utility model discloses a soil steam sterilization device, relating to the field of soil treatment. The soil steam sterilization device includes a tank, and further includes: a cover plate detachably connected to the tank; a gas delivery chamber is provided at the bottom of the tank, and multiple steam jet nozzles communicating with the gas delivery chamber are equidistantly arranged on the inner circumference of the bottom of the tank; a gas delivery pipe communicating with the gas delivery chamber; a material delivery cylinder rotatably connected to the cover plate and located within the tank; multiple sets of levers equidistantly fixedly connected to the material delivery cylinder; and a rotating shaft rotatably connected to the cover plate and located within the material delivery cylinder. This utility model, through the cooperation of components such as the tank, cover plate, material delivery cylinder, levers, rotating shaft, and spiral blades, achieves soil agitation and steam sterilization. The agitation action of the levers and the circulatory delivery of the soil by the spiral blades ensure that the steam can evenly contact the soil, improving the uniformity and thoroughness of sterilization and ensuring the soil sterilization effect.

Description

Technical Field

[0001] This utility model belongs to the field of soil treatment technology, specifically, it relates to a soil steam sterilization device. Background Technology

[0002] In agricultural production, soil health is the foundation for ensuring crop yield and quality. However, long-term continuous cropping can easily lead to the proliferation of pathogens (such as root-knot nematodes and Fusarium), insect eggs, and weed seeds, resulting in frequent soil-borne diseases and hindered crop growth. Soil steam sterilization, as an efficient and environmentally friendly physical disinfection method, kills harmful organisms in the soil through high-temperature steam without leaving chemical residues, and has become an important technical means in fields such as facility agriculture and horticulture.

[0003] Currently, soil steam sterilization mainly relies on traditional fixed mixing equipment. These devices typically use single-shaft mixing blades or static steam injection mode. Single-shaft mixing can only achieve local soil turning, and it is difficult to effectively contact steam with deep soil or the interior of aggregates. Static steam injection, due to the lack of a dynamic mixing mechanism, is prone to uneven steam distribution, resulting in overheating of the surface soil and incomplete sterilization of the deep soil. In view of this, this utility model is proposed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a soil steam disinfection device that can overcome or at least partially solve the above problems.

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0006] A soil steam sterilization device includes a tank body, and further includes: a cover plate detachably connected to the tank body, wherein a gas delivery chamber is provided at the bottom of the tank body, and a plurality of steam jet nozzles communicating with the gas delivery chamber are equidistantly arranged on the inner circumference of the bottom of the tank body; a gas delivery pipe communicating with the gas delivery chamber; a material delivery cylinder rotatably connected to the cover plate and located in the tank body; a plurality of levers fixedly connected at equal intervals to the material delivery cylinder; and a rotating shaft rotatably connected to the cover plate and located in the material delivery cylinder, wherein a spiral blade is provided on the rotating shaft, and a material inlet is provided on the lower end side wall and a material outlet is provided on the upper end side wall of the material delivery cylinder.

[0007] Preferably, a motor is fixedly installed on the cover plate, and a bevel gear one is fixedly installed on the rotating shaft and the conveying cylinder. A bevel gear two, which meshes with the bevel gear one, is fixedly connected to the output end of the motor.

[0008] For use in delivering steam for soil disinfection into the gas delivery chamber via a gas delivery pipe, preferably, a steam generator is also provided on one side of the tank body, with the end of the gas delivery pipe away from the gas delivery chamber connected to the output end of the steam generator.

[0009] Preferably, a spirally arranged heat-insulating cavity is formed between the inner and outer walls of the tank body, a pressure relief pipe connected to the tank body is provided on the cover plate, the end of the pressure relief pipe away from the cover plate is connected to the upper end of the heat-insulating cavity, an exhaust pipe is fixedly connected to the lower end of the heat-insulating cavity, and a pressure relief valve is provided on the pressure relief pipe.

[0010] To facilitate the removal of the disinfected soil from the tank, preferably, the bottom of the tank is fixedly connected to a discharge pipe, and the discharge end of the discharge pipe is detachably connected to a sealing cap via fixing bolts.

[0011] To reduce soil residue at the bottom of the tank, the inner wall of the tank bottom is further designed to be conical.

[0012] To facilitate the installation and removal of the cover plate, preferably, the cover plate is detachably connected to the upper end of the tank body by mounting bolts.

[0013] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0014] This invention achieves soil mixing and steam sterilization through the cooperation of components such as tank, cover plate, conveying cylinder, lever, rotating shaft and spiral blades. The stirring action of the lever and the circulating conveying of soil by the spiral blades ensure that the steam can contact the soil evenly, improving the uniformity and thoroughness of sterilization and ensuring the soil sterilization effect.

[0015] By designing the insulation cavity in a spiral shape, the flow path of steam within the cavity is greatly extended, allowing the steam more time to transfer heat to the tank, thus improving heat utilization and the insulation effect of the tank, reducing energy waste. At the same time, the spiral-shaped insulation cavity enables the tank to be heated more evenly, avoiding local overheating or undercooling, further ensuring the stability of soil disinfection temperature, and effectively killing more pathogens, insect eggs, and weed seeds. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the tank and conveying cylinder of this utility model;

[0018] Figure 3 This is a partial structural schematic diagram of the present invention;

[0019] Figure 4This is a utility model Figure 2 Enlarged view of section A;

[0020] Figure 5 This is a utility model Figure 2 Enlarged view of section B.

[0021] In the diagram: 1. Tank body; 101. Cover plate; 102. Discharge pipe; 103. Sealing cover; 2. Gas delivery chamber; 201. Steam jet nozzle; 202. Steam generator; 203. Gas delivery pipe; 204. Pressure relief pipe; 205. Insulation chamber; 206. Exhaust pipe; 3. Feeding cylinder; 301. Actuating lever; 4. Rotating shaft; 401. Spiral blade; 402. Feed inlet; 403. Discharge outlet; 404. Bevel gear one; 405. Motor; 406. Bevel gear two. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0023] Example 1:

[0024] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 A soil steam sterilization device includes a tank body 1, and further includes: a cover plate 101, detachably connected to the tank body 1, wherein the bottom of the tank body 1 has a gas delivery chamber 2, and multiple steam jet nozzles 201 connected to the gas delivery chamber 2 are equidistantly arranged on the inner circumference of the bottom of the tank body 1; a gas delivery pipe 203, connected to the gas delivery chamber 2; a material delivery cylinder 3, rotatably connected to the cover plate 101 and located in the tank body 1; multiple sets of levers 301, equidistantly fixedly connected to the material delivery cylinder 3; and a rotating shaft 4, rotatably connected to the cover plate 101 and located in the material delivery cylinder 3, wherein the rotating shaft 4 is provided with spiral blades 401, and the lower end side wall of the material delivery cylinder 3 has a feed inlet 402 and the upper end side wall has a discharge outlet 403.

[0025] A motor 405 is fixedly installed on the cover plate 101. A bevel gear 404 is fixedly installed on the rotating shaft 4 and the conveying cylinder 3. A bevel gear 406 that meshes with the bevel gear 404 is fixedly connected to the output end of the motor 405.

[0026] It also includes a steam generator 202 located on one side of the tank body 1, and the end of the gas supply pipe 203 away from the gas supply chamber 2 is connected to the output end of the steam generator 202.

[0027] In use, first remove the cover plate 101 and add the soil to be disinfected into the tank 1. After adding the soil, install the cover plate 101 to seal the tank 1. Start the steam generator 202. High-temperature steam (usually 100-130℃) enters the gas delivery chamber 2 through the gas delivery pipe 203, and then is sprayed into the soil in an umbrella shape through the steam nozzle 201 (e.g., Figure 2 As shown), the motor 405 is then started, driving the second bevel gear 406 to rotate. When the second bevel gear 406 rotates, it drives the conveying cylinder 3 and the rotating shaft 4 to rotate synchronously in opposite directions through meshing with the first bevel gear 404. The lever 301 stirs the soil around the conveying cylinder 3, while the spiral blade 401 sucks the bottom soil from the inlet 402 and conveys it upward through the inside of the conveying cylinder 3 to the outlet 403 for discharge, forming a "bottom suction - top spill" cycle. During this process, the soil particles are in full contact with the steam, and the latent heat and humid heat effect of the steam are used to kill pathogens, insect eggs and weed seeds.

[0028] In summary, through the cooperation of components such as tank 1, cover plate 101, conveying cylinder 3, lever 301, rotating shaft 4, and spiral blade 401, soil mixing and steam sterilization are achieved. The mixing action of lever 301 and the circulating conveying of soil by spiral blade 401 ensure that steam can evenly contact the soil, improving the uniformity and thoroughness of sterilization, ensuring the soil sterilization effect, and guaranteeing the smooth progress of subsequent planting and other work. At the same time, the detachable cover plate 101 facilitates the addition of soil.

[0029] It should be noted that the pressure relief pipe 204 is a stretchable and retractable hose, therefore, the pressure relief pipe 204 will not interfere with the disassembly and assembly of the cover plate 101.

[0030] Example 2:

[0031] Reference Figure 2 A soil steam sterilization device is basically the same as in Embodiment 1, but further, a spirally arranged heat-insulating cavity 205 is provided between the inner and outer walls of the tank body 1, a pressure relief pipe 204 connected to the tank body 1 is provided on the cover plate 101, one end of the pressure relief pipe 204 away from the cover plate 101 is connected to the upper end of the heat-insulating cavity 205, the lower end of the heat-insulating cavity 205 is fixedly connected to an exhaust pipe 206, and a pressure relief valve is provided on the pressure relief pipe 204.

[0032] When the steam pressure inside tank 1 is too high, the pressure relief valve opens, and the steam enters the insulation chamber 205 through the pressure relief pipe 204. Since the insulation chamber 205 is spirally arranged, the steam will slowly descend along the spiral path when it flows in the chamber. During this process, the steam comes into full contact with the inner wall of tank 1 and transfers heat to tank 1, thereby insulating tank 1 and reducing heat loss. At the same time, the spiral path prolongs the residence time of the steam in the insulation chamber 205, so that the heat carried by the steam can be utilized more fully. As the steam flows, the heat is continuously transferred, the steam temperature gradually decreases, and finally it is discharged from the exhaust pipe 206.

[0033] By designing the insulation cavity 205 in a spiral shape, the flow path of steam within the cavity is greatly extended, allowing the steam more time to transfer heat to the tank 1, thereby improving heat utilization and reducing energy waste. At the same time, the spiral-shaped insulation cavity 205 enables the tank 1 to be heated more evenly, avoiding local overheating or undercooling, further ensuring the stability of soil disinfection temperature, and effectively killing more pathogens, insect eggs, and weed seeds.

[0034] Example 3:

[0035] Reference Figure 2 , Figure 5 A soil steam sterilization device, which is basically the same as in Example 1, but further, the bottom of the tank 1 is fixedly connected to a discharge pipe 102, and the discharge end of the discharge pipe 102 is detachably connected to a sealing cap 103 by a fixing bolt.

[0036] After the soil disinfection is completed, unscrew the fixing bolts and open the sealing cover 103. The disinfected soil will be discharged from the discharge pipe 102 under the action of gravity. When it is necessary to clean the inside of the tank 1, the sealing cover 103 can also be opened for processing.

[0037] The discharge pipe 102 provides a channel for the discharge of disinfected soil, and the removable sealing cover 103 facilitates the control of soil discharge and the cleaning and maintenance of the inside of the tank 1, making the equipment more convenient to use.

[0038] The bottom inner wall of tank 1 is conical;

[0039] During the soil disinfection process, the conical bottom allows the soil to naturally gather at the discharge pipe 102. After disinfection, the sealing cover 103 is opened, and the soil can be discharged more smoothly from the discharge pipe 102, reducing soil residue at the bottom of the tank.

[0040] The conical shape of the inner wall at the bottom of the tank 1 facilitates the concentration of soil towards the discharge pipe 102, improving soil discharge efficiency, reducing residue, ensuring full utilization of the soil, and also making it easier to clean the inside of the tank 1, reducing maintenance difficulty.

[0041] Example 4:

[0042] Reference Figure 1 A soil steam sterilization device, which is basically the same as in Example 1, but further, the cover plate 101 is detachably connected to the upper end of the tank body 1 by mounting bolts.

[0043] When it is necessary to add soil into tank 1 or to perform internal maintenance on the equipment, unscrew the mounting bolts to remove the cover plate 101 from tank 1. After adding soil or completing the maintenance, install the cover plate 101 back onto tank 1 and tighten the mounting bolts to achieve sealing and fixation.

[0044] The use of mounting bolts to detach and connect the cover plate 101 to the tank body 1 is convenient and quick, facilitating equipment maintenance and soil addition, and improving the convenience and flexibility of equipment use.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model.

Claims

1. A soil steam sterilization apparatus comprising a tank body (1), characterized in that, Also includes: The cover plate (101) is detachably connected to the tank body (1). The tank body (1) has a gas delivery chamber (2) at the bottom. The inner wall of the bottom of the tank body (1) is provided with a plurality of steam jet nozzles (201) that are connected to the gas delivery chamber (2) at equal intervals. The gas delivery pipe (203) is connected to the gas delivery chamber (2); The conveying cylinder (3) is rotatably connected to the cover plate (101) and located in the tank body (1); Multiple sets of levers (301) are fixedly connected at equal intervals to the feed cylinder (3); A rotating shaft (4) is rotatably connected to the cover plate (101) and located in the conveying cylinder (3). The rotating shaft (4) is provided with a spiral blade (401). The lower end side wall of the conveying cylinder (3) is provided with a feed inlet (402) and the upper end side wall is provided with a discharge outlet (403).

2. A soil steam sterilization apparatus according to claim 1, wherein A motor (405) is fixedly installed on the cover plate (101), and a bevel gear (404) is fixedly installed on the rotating shaft (4) and the conveying cylinder (3). A bevel gear (406) that meshes with the bevel gear (404) is fixedly connected to the output end of the motor (405).

3. A soil steam sterilization apparatus as defined in claim 1, wherein It also includes a steam generator (202) disposed on one side of the tank (1), and the end of the gas supply pipe (203) away from the gas supply chamber (2) is connected to the output end of the steam generator (202).

4. A soil steam sterilization apparatus as defined in claim 1, wherein A spirally arranged heat-insulating cavity (205) is provided between the inner and outer walls of the tank (1). A pressure relief pipe (204) connected to the tank (1) is provided on the cover plate (101). One end of the pressure relief pipe (204) away from the cover plate (101) is connected to the upper end of the heat-insulating cavity (205). An exhaust pipe (206) is fixedly connected to the lower end of the heat-insulating cavity (205). A pressure relief valve is provided on the pressure relief pipe (204).

5. A soil steam sterilization device according to claim 1, characterized in that, The bottom of the tank (1) is fixedly connected to a discharge pipe (102), and the discharge end of the discharge pipe (102) is connected to a sealing cap (103) by means of a fixing bolt.

6. A soil steam sterilization apparatus as defined in claim 5, wherein The bottom inner wall of the tank (1) is conical.

7. A soil steam sterilization apparatus as defined in claim 1, wherein The cover plate (101) is detachably connected to the upper end of the tank body (1) by mounting bolts.

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