CN211931245U - Soil sterilizing machine - Google Patents
Soil sterilizing machine Download PDFInfo
- Publication number
- CN211931245U CN211931245U CN201921868683.7U CN201921868683U CN211931245U CN 211931245 U CN211931245 U CN 211931245U CN 201921868683 U CN201921868683 U CN 201921868683U CN 211931245 U CN211931245 U CN 211931245U
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- China
- Prior art keywords
- steam
- soil
- disinfection
- lifting column
- disinfection box
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- 239000002689 soil Substances 0.000 title claims abstract description 42
- 230000001954 sterilising effect Effects 0.000 title claims abstract description 33
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 76
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000002912 waste gas Substances 0.000 claims abstract description 3
- 230000005540 biological transmission Effects 0.000 claims description 14
- 230000007246 mechanism Effects 0.000 claims description 13
- 239000003638 chemical reducing agent Substances 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 6
- 235000003143 Panax notoginseng Nutrition 0.000 abstract description 12
- 241000180649 Panax notoginseng Species 0.000 abstract description 12
- 238000003971 tillage Methods 0.000 abstract description 3
- 238000010793 Steam injection (oil industry) Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 6
- 235000003181 Panax pseudoginseng Nutrition 0.000 description 2
- 244000131316 Panax pseudoginseng Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000001397 quillaja saponaria molina bark Substances 0.000 description 2
- 229930182490 saponin Natural products 0.000 description 2
- 150000007949 saponins Chemical class 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000233866 Fungi Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000459 effect on growth Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 244000005706 microflora Species 0.000 description 1
- 238000009335 monocropping Methods 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007226 seed germination Effects 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
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Abstract
The utility model relates to a soil disinfection machine belongs to agricultural mechanization technical field. The utility model discloses a steam generation room, tire, disinfect box casing, disinfect box upper cover, steam disinfection needle, drive gear, bearing frame, hydraulic pressure post support frame, main delivery of steam pipe, slide rail, steam delivery board, hydraulic pressure lift post, through-hole, vice delivery of steam pipe, waste gas discharge passageway, water inlet, reduction gear, gasoline engine, motor, hydraulic pump, clutch, battery. The utility model is suitable for a soil through the rotary tillage is moved, and the purpose is for reducing the resistance that steam injection needle got into soil depths to reduce the power loss. The structure has reasonable design, good operation quality, high operation efficiency, reliable operation and high generalization degree, and completely meets the requirement of steam sterilization operation of the soil of the panax notoginseng.
Description
Technical Field
The utility model relates to a soil disinfection machine belongs to agricultural mechanization technical field.
Background
The modern research shows that the panax notoginseng is one of rare traditional Chinese medicinal materials, and is influenced by factors such as root rot pathogen infection, self-toxic substance accumulation, deterioration of soil physicochemical properties, change of soil microflora and the like, and saponin substances secreted by the panax notoginseng into rhizosphere soil have obvious promotion effect on growth of panax notoginseng root rot fungi, and meanwhile, the saponin substances have obvious self-toxic activity on seed germination and root system cells of the panax notoginseng, and the panax notoginseng cannot be sown again in the land where the panax notoginseng is planted for at least ten years, so that great obstacle exists in continuous cropping of the panax notoginseng, and the land where the panax notoginseng is planted is less and less. Therefore, a simple and efficient method for disinfecting the soil in which the panax notoginseng is planted needs to be found. The machine has higher requirement on the disinfection efficiency of soil disinfection in the soil steam disinfection process, can also save a large amount of manpower, is mainly used for the operation of an industrialized pseudo-ginseng production base, and strictly meets the design requirement of agricultural automatic machinery.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: the utility model provides a soil disinfection machine to be used for solving the problem that soil disinfection operating efficiency is low, the cost of labor is high, this structural design is reasonable, and the operating quality is good, and the operating efficiency is high, and the operation is reliable, and the universalization degree is high, has satisfied the sterile requirement of pseudo-ginseng industrialization production soil steam completely.
The utility model adopts the technical scheme that: a soil sterilizer comprises a steam generating chamber 1, wheels 2, a sterilizing box shell 3, a sterilizing box upper cover 4, a steam sterilizing needle 6, a gear transmission mechanism 8, a bearing seat 9, a hydraulic lifting column mounting hole 12, a main steam conveying pipe 13, a slide rail 14, a steam conveying plate 15, a hydraulic lifting column 16, a through hole 19, an auxiliary steam conveying pipe 20, a waste gas discharging channel 22, a water inlet 24, a speed reducer 26, a gasoline engine 27, a motor 28, a hydraulic pump 29, a clutch 30 and a battery 34;
the gasoline engine 27 is driven by a belt to drive the speed reducer 26 to rotate, the speed reducer 26 drives the gear transmission mechanism 8 to rotate through the clutch 30, the gear transmission mechanism 8 is connected with a gear on the axle through a chain to transmit power so as to drive the wheels 2 to run, wherein the wheels 2 are fixedly connected with the axle, and the axle is connected with the bottom of the frame through the bearing seat 9;
the steam generating chamber 1 is arranged at the upper end of the frame base, water in the steam generating chamber 1 is supplied by a water inlet 24, and steam in the steam generating chamber 1 is conveyed to the main steam conveying pipe 13 through the auxiliary steam conveying pipe 20; the main steam conveying pipe 13 penetrates through a through hole 19 in the upper cover 4 of the disinfection box and is fixed on the steam conveying plate 15 in a welding mode to supply air to the steam disinfection needle 6, the upper cover 4 of the disinfection box is fixed on the upper surface of the disinfection box shell 3 in a bolt connection mode, the upper center of the upper cover 4 of the disinfection box is fixedly connected with the upper end of a hydraulic lifting column 16 in a bolt connection mode, and the lower end of the hydraulic lifting column 16 is installed on a hydraulic lifting column installing hole 12 of the steam conveying plate 15 in a bolt connection mode; a slide rail 14 is arranged inside the disinfection box shell 3, and the steam delivery plate 15 can slide inside the disinfection box shell 3 along the slide rail 14; the steam sterilizing needle 6 is installed on the lower end face of the steam conveying plate 15 in a threaded mode, the battery 34 is used for driving the motor 28 to work, and the motor 28 drives the hydraulic pump 29 to work, so that the hydraulic lifting column 16 is lifted.
Further, the device also comprises a controller 33, a position sensor 18, a temperature sensor 5 and a support frame 25; the upper cover 4 of the disinfection box is fixed with a position sensor 18 through a bolt, a temperature sensor 5 is arranged on a support frame 25, the support frame 25 is connected on the steam conveying plate 15 through a bolt, the position sensor 18 and the temperature sensor 5 are both connected with a controller 33, and the controller 33 is also connected with a switch of the steam generating chamber 1, a motor 28 and a gasoline engine 27.
Further, the lower part of the disinfection box shell 3 is provided with a spring mounting seat 11 below the sliding rail 14, one end of the buffer spring 7 is mounted on the spring mounting seat 11, the other end of the buffer spring is suspended, and when the steam delivery plate 15 slides to the lower part of the disinfection box shell 3 along the sliding rail 14 under the action of the hydraulic lifting column 16, the steam delivery plate 15 is in contact with the suspended end of the buffer spring 7 to protect the steam delivery plate 15.
Further, the air chamber in the steam delivery plate 15 is a sealed air chamber formed by welding an upper plate and a bottom plate.
Further, the sub steam duct 20 is a hose, which is detachable.
Further, the steam delivery plate 15 is installed in the disinfection box housing 3 through the slide rail 14, and gaps are left between four sides of the steam delivery plate 15 and the inner wall of the disinfection box housing 3.
Further, the steam generating chamber 1 requires a power supply, and the source of the current is from the battery 34.
Furthermore, the length of the steam disinfection needle 6 is 35 cm-40 cm, the depth of the steam disinfection needle capable of being inserted into soil is 20cm, and 24 small holes with the diameter of 3 mm-4 mm are uniformly distributed around each steam disinfection needle 6 and used for releasing high-temperature steam.
The utility model has the advantages that:
1. the steam sterilization device realizes the mechanization and automation of the steam sterilization operation, and abandons the traditional steam sterilization operation of pipe laying, thereby greatly reducing the production cost, improving the operation efficiency of the steam sterilization and reducing the required operators.
2. The equipment adopts an independent frame structure, and is convenient to transport.
3. The working efficiency can be greatly improved, the labor intensity is reduced, the production cost is reduced, and the market competitiveness of the product is improved.
4. The machine simplifies the mechanism of the old disinfection machine, adopts most of the connection, has simple structure, is convenient to operate, and is convenient to detach and maintain.
5. The structure has reasonable design, good operation quality, high operation efficiency, reliable operation and high generalization degree, and completely meets the requirement of steam sterilization of the soil in the industrialized production of the panax notoginseng.
Drawings
Fig. 1 is an isometric view of the present invention;
FIG. 2 is an isometric view of the outer shell of the sterilization case of the present invention;
FIG. 3 is an isometric view of the upper lid of the sterilization case of the present invention;
fig. 4 is a top view of the present invention;
fig. 5 is a partial part view of the present invention.
The respective reference numerals in FIGS. 1 to 5: 1-a steam generating chamber, 2-wheels, 3-a disinfection box shell, 4-a disinfection box upper cover, 5-a temperature sensor, 6-a steam disinfection needle, 7-a buffer spring, 8-a gear transmission mechanism, 9-a bearing seat, 11-a spring mounting seat, 12-a hydraulic lifting column mounting hole, 13-a main steam conveying pipe, 14-a slide rail, 15-a steam conveying plate, 16-a hydraulic lifting column, 18-a position sensor, 19-a through hole, 20-an auxiliary steam conveying pipe, 22-an exhaust gas removal channel, 24-a water inlet, 25-a support frame, 26-a speed reducer, 27-a gasoline engine, 28-a motor, 29-a hydraulic pump, 30-a clutch, 33-a controller and 34-a battery.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
Example 1: as shown in fig. 1-5, a soil sterilizer comprises a steam generating chamber 1, wheels 2, a sterilizing box housing 3, a sterilizing box upper cover 4, a steam sterilizing needle 6, a gear transmission mechanism 8, a bearing seat 9, a hydraulic lifting column mounting hole 12, a main steam conveying pipe 13, a slide rail 14, a steam conveying plate 15, a hydraulic lifting column 16, a through hole 19, an auxiliary steam conveying pipe 20, an exhaust gas removing channel 22, a water inlet 24, a speed reducer 26, a gasoline engine 27, a motor 28, a hydraulic pump 29, a clutch 30 and a battery 34;
the gasoline engine 27 is driven by a belt to drive the speed reducer 26 to rotate, the speed reducer 26 drives the gear transmission mechanism 8 to rotate through the clutch 30, the gear transmission mechanism 8 is connected with a gear on the axle through a chain to transmit power so as to drive the wheels 2 to run, wherein the wheels 2 are fixedly connected with the axle, and the axle is connected with the bottom of the frame through the bearing seat 9;
the steam generating chamber 1 is arranged at the upper end of the frame base, water in the steam generating chamber 1 is supplied by a water inlet 24, and steam in the steam generating chamber 1 is conveyed to the main steam conveying pipe 13 through the auxiliary steam conveying pipe 20; the main steam conveying pipe 13 penetrates through a through hole 19 in the upper cover 4 of the disinfection box and is fixed on the steam conveying plate 15 in a welding mode to supply air to the steam disinfection needle 6, the upper cover 4 of the disinfection box is fixed on the upper surface of the disinfection box shell 3 in a bolt connection mode, the upper center of the upper cover 4 of the disinfection box is fixedly connected with the upper end of a hydraulic lifting column 16 in a bolt connection mode, and the lower end of the hydraulic lifting column 16 is installed on a hydraulic lifting column installing hole 12 of the steam conveying plate 15 in a bolt connection mode; a slide rail 14 is arranged inside the disinfection box shell 3, and the steam delivery plate 15 can slide inside the disinfection box shell 3 along the slide rail 14; the steam sterilizing needle 6 is installed on the lower end face of the steam conveying plate 15 in a threaded mode, the battery 34 is used for driving the motor 28 to work, and the motor 28 drives the hydraulic pump 29 to work, so that the hydraulic lifting column 16 is lifted.
Further, the device also comprises a controller 33, a position sensor 18, a temperature sensor 5 and a support frame 25; the upper cover 4 of the disinfection box is fixed with a position sensor 18 through a bolt, a temperature sensor 5 is arranged on a support frame 25, the support frame 25 is connected on the steam conveying plate 15 through a bolt, the position sensor 18 and the temperature sensor 5 are both connected with a controller 33, and the controller 33 is also connected with a switch of the steam generating chamber 1, a motor 28 and a gasoline engine 27.
Further, the lower part of the disinfection box shell 3 is provided with a spring mounting seat 11 below the sliding rail 14, one end of the buffer spring 7 is mounted on the spring mounting seat 11, the other end of the buffer spring is suspended, and when the steam delivery plate 15 slides to the lower part of the disinfection box shell 3 along the sliding rail 14 under the action of the hydraulic lifting column 16, the steam delivery plate 15 is in contact with the suspended end of the buffer spring 7 to protect the steam delivery plate 15.
Further, the air chamber in the steam delivery plate 15 is a sealed air chamber formed by welding an upper plate and a bottom plate.
Further, the sub steam duct 20 is a hose, which is detachable.
Further, the steam delivery plate 15 is installed in the disinfection box housing 3 through the slide rail 14, and gaps are left between four sides of the steam delivery plate 15 and the inner wall of the disinfection box housing 3.
Further, the steam generating chamber 1 requires a power supply, and the source of the current is from the battery 34.
Furthermore, the length of the steam disinfection needle 6 is 35 cm-40 cm, the depth of the steam disinfection needle capable of being inserted into soil is 20cm, and 24 small holes with the diameter of 3 mm-4 mm are uniformly distributed around each steam disinfection needle 6 and used for releasing high-temperature steam.
The steam sterilizing needle 6 can be changed into needle shapes with different lengths according to different requirements, and the sterilizing needle can be collected into the interior of the sterilizing box shell by utilizing a hydraulic lifting column when the sterilizing equipment is not needed.
Four buffer springs 7 are arranged at the lower ends of the sliding rails 14 of the sterilizing box shell 3, and the purpose of the four buffer springs is to slow down the descending speed of a steam conveying plate and protect a machine.
The 20cm position of the front section of the steam disinfection needle 6 is not provided with a through hole, and the section of the needle is not inserted into soil, thereby playing the role of saving steam.
The utility model discloses a theory of operation is:
when the sterilizing machine is placed on the land to be sterilized, the controller 33 starts the motor 28 on the machine, the motor 28 drives the hydraulic pump 29 to rotate clockwise to suck oil into the oil tank and press the hydraulic lifting column 16 to make the hydraulic lifting column 16 start to operate, the steam conveying plate 15 is pushed to press downwards to make the steam sterilizing needle 6 inserted into the soil, the position sensor 18 detects the distance between the steam conveying plate 15 and the position sensor and transmits the distance to the controller 33, when the steam conveying plate 15 is pressed down to the distance of the depth required for inserting the needle tube into the soil (the distance between the position sensor 18 and the steam conveying plate 15 is estimated), the controller 33 controls the steam generating chamber 1 to convey steam, the soil is sterilized, the temperature sensor 5 collects the temperature of the soil and transmits the temperature to the controller 33, when the temperature sensor 5 detects that the temperature of the soil reaches the set temperature, the controller 33 controls the steam generating chamber 1 to stop supplying steam to the steam conveying plate 15, meanwhile, the controller 33 transmits a signal to the motor 28 of the machine to control the motor 28 to realize the reverse rotation of the motor 28, at the moment, the hydraulic pump 29 starts to suck oil to the hydraulic lifting column 16, the hydraulic lifting column 16 starts to contract back, when the contraction distance reaches the original position (the distance between the hydraulic lifting column and the steam conveying plate 15 is collected by the position sensor 18 and sent to the controller 33), the controller 33 controls and stops the operation of the motor 28, the movement of the hydraulic lifting column 16 is stopped, the gasoline engine 27 is started, and the machine starts to move;
the principle of machine walking is as follows: the gasoline engine 27 drives the equipment to walk, the gasoline engine 27 drives the speed reducer 26 to rotate through belt transmission after working, the speed reducer 26 drives the gear transmission mechanism 8 to rotate through the clutch 30, and the gear transmission mechanism 8 is connected with a gear on an axle through a chain to transmit power so as to drive the wheels 2 to run; when the sterilizer travels for a certain time, the controller 33 controls the gasoline engine 27 not to operate, so that the sterilizer stops traveling to perform sterilization, and the sterilization is circulated in such a way to achieve an automatic sterilization mode; wherein a certain time of the travel of the sterilizing machine is obtained depending on the speed of travel thereof and the transverse length of the steam transporting plate 15, which time is fixedly set in the timer of the controller 33. Wherein, the utility model discloses in, controller 33 can adopt the conventional means in the automation field to control motor 28, gasoline engine 27.
The utility model discloses an it carries out sterile equipment to soil to realize automaticly to the application on the soil that has been rotary tillage, the sterilizing machine can carry out the disinfection operation of automatic formula in the field, the sterile loaded down with trivial details operation of manual control soil has been saved, also simplify disinfection structure, the temperature-sensing system has been installed, the sterile effect of steam has been improved, utilize the controller to carry out the switch that automatic control steam carried to the steam generation room, the effectual manufacturing cost that has saved, because this machine is applicable to and moves through the soil of rotary tillage, the purpose is for reducing the resistance that steam injection needle got into soil depths, thereby reduce power loss. The structure has reasonable design, good operation quality, high operation efficiency, reliable operation and high generalization degree, and completely meets the requirement of steam sterilization operation of the soil of the panax notoginseng.
While the present invention has been particularly shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (8)
1. A soil sterilizing machine which is characterized in that: the device comprises a steam generating chamber (1), wheels (2), a disinfection box shell (3), a disinfection box upper cover (4), a steam disinfection needle (6), a gear transmission mechanism (8), a bearing seat (9), a hydraulic lifting column mounting hole (12), a main steam conveying pipe (13), a slide rail (14), a steam conveying plate (15), a hydraulic lifting column (16), a through hole (19), an auxiliary steam conveying pipe (20), a waste gas removing channel (22), a water inlet (24), a speed reducer (26), a gasoline engine (27), a motor (28), a hydraulic pump (29), a clutch (30) and a battery (34);
the gasoline engine (27) drives the speed reducer (26) to rotate through belt transmission, the speed reducer (26) drives the gear transmission mechanism (8) to rotate through the clutch (30), the gear transmission mechanism (8) is connected with a gear on an axle through a chain to transmit power so as to drive the wheels (2) to run, wherein the wheels (2) are fixedly connected with the axle, and the axle is connected with the bottom of the frame through a bearing seat (9);
the steam generating chamber (1) is arranged at the upper end of the frame base, water in the steam generating chamber (1) is supplied by a water inlet (24), and steam in the steam generating chamber (1) is conveyed to the main steam conveying pipe (13) through the auxiliary steam conveying pipe (20); wherein the main steam conveying pipe (13) penetrates through a through hole (19) on the upper cover (4) of the disinfection box and is fixed on the steam conveying plate (15) in a welding mode for supplying air to the steam disinfection needle (6), the upper cover (4) of the disinfection box is fixed on the upper surface of the shell (3) of the disinfection box in a bolt connection mode, the upper center of the upper cover (4) of the disinfection box is fixedly connected with the upper end of a hydraulic lifting column (16) through a bolt, and the lower end of the hydraulic lifting column (16) is installed on a hydraulic lifting column installing hole (12) of the steam conveying plate (15) through a bolt; a sliding rail (14) is arranged inside the disinfection box shell (3), and the steam conveying plate (15) can slide inside the disinfection box shell (3) along the sliding rail (14); the steam disinfection needle (6) is arranged on the lower end face of the steam conveying plate (15) in a threaded mode, the battery (34) is used for driving the motor (28) to work, and the motor (28) drives the hydraulic pump (29) to work so as to realize the lifting of the hydraulic lifting column (16).
2. The soil sanitizer of claim 1 wherein: the device also comprises a controller (33), a position sensor (18), a temperature sensor (5) and a support frame (25); a position sensor (18) is fixed on an upper cover (4) of the sterilizing box through a bolt, a temperature sensor (5) is installed on a support frame (25), the support frame (25) is connected to a steam conveying plate (15) through a bolt, the position sensor (18) and the temperature sensor (5) are both connected with a controller (33), and the controller (33) is further connected with a switch of a steam generating chamber (1), a motor (28) and a gasoline engine (27).
3. The soil sanitizer of claim 1 wherein: the lower part of disinfection case casing (3) just is located below slide rail (14) and is equipped with spring mount pad (11), and buffer spring (7) one end is installed on spring mount pad (11), and the other end is unsettled, and when steam delivery board (15) are acted on by hydraulic lifting column (16) and slide to disinfection case casing (3) lower part time-sharing along slide rail (14) inside disinfection case casing (3) and contact with the unsettled one end of buffer spring (7) and be used for protecting steam delivery board (15).
4. The soil sanitizer of claim 1 wherein: the air chamber in the steam conveying plate (15) is a sealed air chamber formed by welding an upper plate and a bottom plate.
5. The soil sanitizer of claim 1 wherein: the auxiliary steam delivery pipe (20) is a hose and can be detached.
6. The soil sanitizer of claim 1 wherein: the steam delivery plate (15) is installed in the disinfection box shell (3) through the sliding rail (14), and gaps are reserved between the four sides of the steam delivery plate (15) and the inner wall of the disinfection box shell (3).
7. The soil sanitizer of claim 1 wherein: the steam generating chamber (1) requires a power supply and the source of the current is from a battery (34).
8. The soil sanitizer of claim 1 wherein: the length of the steam disinfection needle (6) is 35 cm-40 cm, the depth of the steam disinfection needle capable of being inserted into soil is 20cm, and 24 small holes with the diameter of 3 mm-4 mm are uniformly distributed around each steam disinfection needle (6) and used for releasing high-temperature steam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921868683.7U CN211931245U (en) | 2019-11-01 | 2019-11-01 | Soil sterilizing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921868683.7U CN211931245U (en) | 2019-11-01 | 2019-11-01 | Soil sterilizing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211931245U true CN211931245U (en) | 2020-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921868683.7U Expired - Fee Related CN211931245U (en) | 2019-11-01 | 2019-11-01 | Soil sterilizing machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN211931245U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110731135A (en) * | 2019-11-01 | 2020-01-31 | 昆明理工大学 | soil sterilizer |
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2019
- 2019-11-01 CN CN201921868683.7U patent/CN211931245U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110731135A (en) * | 2019-11-01 | 2020-01-31 | 昆明理工大学 | soil sterilizer |
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Granted publication date: 20201117 Termination date: 20211101 |