Liquefied gas supply system for soil flame high temperature inactivation equipment

Abstract

The present invention discloses a liquefied gas supply system for a soil flame high-temperature inactivation device. The high-temperature inactivation device includes a frame, a counter-rotating tillage device, a flame spraying device located above the rear side of the counter-rotating tillage device, and an inactivation and sterilization cover located at the rear side of the flame spraying device. The frame is also provided with a liquefied gas supply system for supplying gas to the flame spraying device. The heat blocking plate in the device is used in conjunction with the heat dissipation water tank. When only the heat blocking plate is used but the heat dissipation water tank is not provided, the surface temperature of the liquefied bottle will be reduced. However, when the liquefied bottle is operated at a high flow rate, frost is likely to occur on the bottom surface of the bottle due to excessive vaporization, resulting in a low gas utilization rate, requiring shutdown for treatment, and resulting in a reduction in the inactivation efficiency of the machine. Therefore, the heat blocking plate and the heat dissipation water tank need to be used in conjunction. The combined use of the two can simultaneously solve the problems of high temperature on the surface of the liquefied bottle, excessively rapid vaporization at high flow, and surface frost.

Description

Technical Field

[0001] The invention relates to inactivation equipment, in particular to a liquefied gas supply system for soil flame high-temperature inactivation equipment. Background Art

[0002] The accumulation of pathogenic microorganisms in the soil can cause continuous cropping problems, resulting in a decrease in crop yield and quality, and is widely present in the process of crop cultivation. Soil-borne diseases are a type of extremely harmful plant disease that often causes the death of large numbers of plants. There are many types of pathogenic organisms that cause soil-borne diseases, including fungi, bacteria, nematodes, viruses, etc., among which fungi are the main ones. How to disinfect the soil and overcome continuous cropping problems is a global problem that needs to be solved urgently. The current preventive measures mainly include agronomic measures, chemical methods, physical methods, biotechnology and integrated prevention and control. Physical methods usually use medium to high temperatures to kill pathogens, mainly steam disinfection, flame disinfection, electric disinfection, microwave disinfection and other methods. Flame disinfection uses the high temperature of the flame to cause irreversible denaturation of proteins in the organism, thereby achieving the purpose of killing cells and organisms.

[0003] In the prior art, CN116569684B discloses a straw return to the field forced temperature storage type soil flame instantaneous inactivation equipment. The patent includes a counter-rotating rotary tillage device, a flame spraying device and an inactivation and sterilization cover arranged at the rear lower side of the flame spraying device. The flame spraying device uses a liquefied bottle to supply air to the flame nozzle to achieve flame high-temperature inactivation; when the counter-rotating rotary tillage device is in rotary tillage operation, the soil thrown backward moves backward and falls into the flame inactivation chamber, and the soil thrown backward forms a backward-moving flame push airflow, and the flame push airflow pushes the flame in the flame inactivation chamber to diffuse toward the forced high-temperature chamber on the rear side; the inactivation and sterilization cover is designed as a flat structure, so that the high-temperature heat generated by the flame inactivation accumulates inside, which can provide a long-lasting high-temperature environment and can fully perform high-temperature sterilization on the soil.

[0004] The above patent is a prior patent application of the applicant of this application. After the equipment was produced, it was subjected to field tests and had the following technical problems: In order to meet the oxygen supply, the patent added an air supply channel between the flame guide top plate and the flame injection device. The air supply channel can ensure sufficient air to enter and directly contact the flame injection device, and the oxygen intake is sufficient. The field test showed that a large amount of heat will be lost from the air supply channel, which will not only reduce the heat storage effect of the inactivation sterilization cover, but also the heat will move upward and be quickly transferred to the liquefied bottle, making the liquefied bottle in a high temperature environment. The temperature of the liquefied bottle is as high as 100°C or above. When the liquefied bottle is operating at a low flow rate, the liquefied bottle The temperature can reach 100℃ in about 1 minute. Generally, the machine needs to be shut down once every half an hour, and each shutdown time is 5-10 minutes, which greatly affects the operating efficiency. However, there are still disadvantages in using such liquefied gas bottles for gas supply. When the liquefied gas bottle is operated at a high flow rate, due to excessive vaporization, the liquefied gas bottle absorbs heat too quickly, and the temperature drops sharply, generally around 0℃, which easily causes frost on the bottom surface of the bottle, affecting the vaporization of the fuel and making it impossible to fully use the gas. Generally, the machine needs to be shut down once every half an hour, and each shutdown time is 5-10 minutes. Therefore, the equipment in the prior art cannot simultaneously solve the problems of high temperature on the surface of the low-flow liquefied gas bottle and frosting on the surface due to excessive vaporization at high flow.

[0005] When the machine is actually operating, it is necessary to make empirical judgments based on factors such as field weed damage and soil conditions to select low-speed operation or normal-speed operation and high-flow operation or low-flow operation of the liquefied bottle. When operating at normal speed, the liquefied bottle needs to be adjusted to high-flow operation. In this state, combined with the above description, it can be seen that there is a problem of rapid vaporization and frosting of the liquefied bottle, which requires intermittent shutdown for treatment. When operating at low speed, the liquefied bottle can be selected for high-flow operation or low-flow operation as needed. When operating at low flow, the temperature of the liquefied bottle is too high, and a sharp pressure increase and explosion will occur, which is unsafe to use and requires intermittent shutdown for treatment, and efficient inactivation cannot be achieved. Summary of the Invention

[0006] In response to the above technical problems, the present application improves the flame instantaneous extinguishing equipment in the prior art and provides a liquefied gas supply system for soil flame high-temperature extinguishing equipment, which is used to simultaneously meet the high-flow and low-flow operation requirements of normal speed operations and low-speed operations, and solve the problems of excessive temperature of the liquefied bottle and vaporization and frosting of the liquefied bottle.

[0007] To solve the above technical problems, the technical solution of the present invention is: a liquefied gas supply system for a high-temperature flame inactivation device for soil, wherein the high-temperature inactivation device includes a frame, the frame is provided with a counter-rotating rotary tillage device, a flame spray device located above and behind the counter-rotating rotary tillage device, and an inactivation and sterilization cover located behind the flame spray device. The frame is also provided with a liquefied gas supply system for supplying air to the flame spray device, characterized in that:

[0008] The liquefied gas supply system is located above the counter-rotating tillage device and the flame jet device, and close to one side of the flame jet device. A rotary tillage retaining cover is provided above the counter-rotating tillage device, a nozzle anti-blocking cover is provided between the counter-rotating tillage device and the flame jet device, and a nozzle fire shield is further provided above the flame ejection port of the flame jet device. The rotary tillage retaining cover, the nozzle anti-blocking cover, the nozzle fire shield, and the inactivation and sterilization cover are connected end to end in sequence to form a heat blocking plate. The heat blocking plate blocks most of the high-temperature heat generated by the flame below the heat blocking plate, so that a small amount of heat is transferred to the liquefied gas supply system. The overall width of the heat blocking plate corresponds to the width of the inactivation and sterilization cover.

[0009] The flame spraying device includes a gas supply pipeline connected to the gas outlet of the liquefied gas supply system, the gas supply pipeline is sequentially connected to a plurality of gas supply branches, the gas outlet end of each gas supply branch is connected to a flame spray head, and the plurality of flame spray heads are sequentially arranged along the width direction of the heat blocking plate;

[0010] The liquefied gas supply system includes a heat exchange cooling device and a plurality of liquefied tanks installed in the heat exchange cooling device, the heat exchange cooling device is arranged horizontally corresponding to the width of the heat blocking plate, and the plurality of liquefied tanks are arranged in sequence along the width direction of the heat exchange cooling device, and the gas outlets of the plurality of liquefied tanks are respectively connected to gas outlet branches, and the plurality of gas outlet branches are connected to the same gas outlet pipeline, the gas outlet of the gas outlet pipeline is connected to an oxygen terminal box, and the gas outlet of the oxygen terminal box is connected to the gas supply pipeline; the heat exchange cooling device includes a heat exchange water tank, the The heat exchange water tank is loaded with heat exchange cooling water. The top of the heat exchange water tank is provided with a liquefaction tank opening. The bottom end of the liquefaction tank is placed inside the heat exchange water tank through the liquefaction tank opening. The bottom 1 / 3 of the liquefaction tank is immersed below the liquid level of the heat exchange cooling water. During operation, a small amount of heat below the heat blocking plate passes through the heat blocking plate and is transferred to the heat exchange water tank, and is absorbed by the heat exchange cooling water, thereby reducing the heat transferred to the surface of the liquefaction tank. When multiple liquefaction tanks are degassed and vaporized at the same time, the heat of the heat exchange cooling water is absorbed to achieve the purpose of heating.

[0011] As a preferred technical solution, the water exchange water tank is a trough-type water tank with a closed bottom and an open top. The interior of the trough-type water tank is divided into multiple liquefied tank accommodating areas by a water tank partition. The bottom end surface of the water tank partition is provided with a connecting hole connecting the adjacent liquefied tank accommodating areas. Each of the liquefied tank accommodating areas is provided with a corresponding liquefied tank. The top of the trough-type water tank is provided with an anti-overflow rubber layer, and the liquefied tank opening is provided on the surface of the anti-overflow rubber layer.

[0012] As an optimal technical solution, a liquefied tank frame is provided above the trough-type water tank, the top of the liquefied tank is placed in the liquefied tank frame, a liquefied tank baffle is provided outside the liquefied tank frame, and an openable liquefied tank top cover is buckled on the top of the liquefied tank.

[0013] As a preferred technical solution, a liquid level gauge is provided on the outside of the trough-type water tank.

[0014] As a preferred technical solution, the frame is also provided with an automatic water replenishment system connected to the trough-type water tank.

[0015] As a preferred technical solution, the rotary tillage soil retaining cover, the nozzle anti-blocking cover, the nozzle fire shield, and the inactivation and sterilization cover are all made of metal, and a thermal insulation layer is laid on the outer surface of the inactivation and sterilization cover.

[0016] As a preferred technical solution, a plurality of nozzle mounting holes are arranged on the surface of the nozzle fire shield, the bottom of the flame nozzle passes through the nozzle mounting hole and extends to the bottom of the nozzle fire shield, the top of the flame nozzle is provided with an oxygen supply hole, one end of the nozzle fire shield is fixed on the nozzle anti-blocking cover, and the other end of the nozzle fire shield extends to the lower part of the front end of the inactivation and sterilization cover and contacts the inactivation and sterilization cover.

[0017] Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows: when the machine is operating, the heat blocking plate blocks most of the heat generated by the flame below, and a small amount of heat passes through the heat blocking plate and is transferred to the heat exchange water tank, and is absorbed by the heat exchange cooling water, thereby reducing the heat transferred to the surface of the liquefaction tank, thereby avoiding heat transfer to the liquefaction tank to cause a high-temperature explosion of the liquefaction tank, and during high-flow operation, when multiple liquefaction tanks are simultaneously deflated and vaporized, they can absorb the heat of the heat exchange cooling water to achieve the purpose of heating. The heat exchange water tank serves as an intermediate medium and is used in conjunction with the heat blocking plate to simultaneously achieve the purpose of preventing the liquefied bottle from high-temperature explosion and vaporization and frosting, so as to achieve sustainable operation of the machine without stopping; the heat blocking plate in this equipment is used in conjunction with the heat dissipation water tank. When only the heat blocking plate is provided but the heat dissipation water tank is not provided, the surface temperature of the liquefied bottle will be reduced. However, when the liquefied bottle is operated at a high flow rate, frost may easily form on the bottom surface of the bottle due to excessive vaporization, resulting in a low gas utilization rate and the need to stop the machine for processing, which reduces the inactivation efficiency of the machine; therefore, the heat blocking plate and the heat dissipation water tank need to be used in conjunction. The use of the two can simultaneously solve the problems of high temperature on the surface of the liquefied bottle, excessive vaporization at high flow rate, and surface frosting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following drawings are intended only to illustrate and explain the present invention and are not intended to limit the scope of the present invention.

[0019] Figure 1 It is a structural diagram of an embodiment of the present invention;

[0020] Figure 2 It is a structural schematic diagram of another angle of an embodiment of the present invention;

[0021] Figure 3 is a cross-sectional view of an embodiment of the present invention;

[0022] Figure 4 It is a schematic structural diagram of a liquefied gas supply system and a flame injection device according to an embodiment of the present invention;

[0023] Figure 5 is a schematic structural diagram of a liquefied gas supply system according to an embodiment of the present invention;

[0024] Figure 6 This is a schematic structural diagram of a water exchange tank according to an embodiment of the present invention;

[0025] In the figure: 100-frame; 200-counter-rotating tillage device; 300-flame jet device; 301-air supply pipeline; 302-air supply branch pipe; 303-flame nozzle; 400-inactivation and sterilization cover; 500-liquefied gas supply system; 501-liquefied gas tank; 502-air outlet branch pipe; 503-air outlet pipeline; 504-oxygen terminal box; 505-heat water exchange tank; 506-water tank partition; 600-rotary tillage retaining cover; 700-nozzle anti-blocking cover; 800-nozzle fire shield. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the accompanying drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention are described by way of illustration only. It is understood that those skilled in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and are not intended to limit the scope of the claims.

[0027] like Figures 1 to 3As shown, a liquefied gas supply system is used for a high-temperature flame inactivation device for soil. The high-temperature inactivation device includes a frame 100, on which is provided a counter-rotating rotary tillage device 200, a flame spraying device 300 located above and behind the counter-rotating rotary tillage device 200, and an inactivation and sterilization hood 400 located behind the flame spraying device 300. The frame 100 is also provided with a liquefied gas supply system 500 for supplying air to the flame spraying device 300. The counter-rotating rotary tillage device is a device that throws soil backward. Its structure and working principle are prior art and will not be described in detail here. The flame spraying device 300 is used to spray flames into the inactivation and sterilization hood 400 to achieve flame inactivation and high-temperature inactivation of the soil. The inactivation and sterilization hood 400 is used in conjunction with the flame spraying device 300 to provide a high-temperature environment for better inactivation. The liquefied gas supply system 500 is used to supply air to the flame spraying device 300.

[0028] See also Figure 3 The inactivation and sterilization cover 400 is a cover structure with an open front end and a lower end and a top end parallel to the soil surface. The top, both side ends and the rear end of the inactivation and sterilization cover 400 enclose a semi-enclosed high-temperature inactivation chamber. The rear end of the inactivation and sterilization cover 400 is swingably connected to a pressure relief plate. The height of the inactivation and sterilization cover 400 corresponds to the height of the flame jet port at the bottom end of the flame jet device 300, and both are located in the upper middle part of the counter-rotating rotary tillage device. The flame jet port of the flame jet device 300 is tilted backward and sprays toward the front of the high-temperature inactivation chamber. The inactivation sterilization cover 400 in the prior art adopts a low-height ground-hugging design. Although this design can better force the heat to sink and contact the soil surface, it was found in the field test of the machine that this ground-hugging shell is easy to cause soil blockage, especially after the reverse rotary tillage device throws the soil backward, the soil becomes soft, and it is more likely to cause soil blockage as the machine moves forward. At the same time, due to the low height, the hot air at the front side cannot move smoothly to the rear, resulting in poor hot air convection. Therefore, the present application improves the structure of the inactivation sterilization cover 400. The top of the sterilization cover 400 is parallel to the soil, and its height corresponds to the height of the flame jet port, and both are located in the upper middle part of the counter-rotating rotary tillage device. At this time, the height of the sterilization cover 400 is approximately at about 2 / 3 of the counter-rotating rotary tillage device. Compared with the sterilization cover 400 in the prior art, the height is nearly doubled, which can effectively solve the problem of soil blockage. At the same time, it can also ensure smooth hot air convection, and the tail space of the sterilization cover 400 can be fully utilized. The heat in the tail space can still play a high-temperature inactivation role.

[0029] The liquefied gas supply system 500 is located above the counter-rotating tillage device 200 and the flame injection device 300, and is close to one side of the flame injection device 300. A rotary tillage retaining cover 600 is provided above the counter-rotating tillage device 200, a nozzle anti-blocking cover 700 is provided between the counter-rotating tillage device 200 and the flame injection device 300, and a nozzle fire shield 800 is provided above the flame injection port of the flame injection device 300. The rotary tillage retaining cover 600, the nozzle anti-blocking cover 700, the nozzle fire shield 800, the extinguishing device 300 and the flame injection port are connected. The sterilization cover 400 is connected end to end in sequence to form a heat blocking plate, which blocks most of the high-temperature heat generated by the flame below the heat blocking plate, and transfers a small amount of heat to the liquefied gas supply system 500. The overall width of the heat blocking plate corresponds to the width of the sterilization cover 400; the rotary tillage retaining cover 600, the nozzle anti-blocking cover 700, the nozzle fire blocking cover 800, and the sterilization cover 400 are all made of metal, and a thermal insulation layer is laid on the outer surface of the sterilization cover 400 to achieve thermal insulation effect through the thermal insulation layer. This device forms a heat barrier by connecting the rotary tillage retaining cover 600, the nozzle anti-blocking cover 700, the nozzle fire shield 800, and the inactivation and sterilization cover 400 end to end. This eliminates the air supply channel in the prior art and blocks most of the high-temperature heat generated by the flame below below the heat barrier, allowing a small amount of heat to be transferred to the liquefied bottle. This can avoid high temperatures in the liquefied bottle, ensure the safe use of the liquefied bottle, and achieve the purpose of continuous operation of the machine without stopping. The use of metal material is not only resistant to high temperatures and ensures service life, but also can block heat without completely isolating it. It can also ensure that some heat can be transferred to the heat exchange water tank above. Used in conjunction with the heat exchange water tank, it can achieve the effect of simultaneously reducing the temperature of the liquefied tank and preventing frost on the liquefied tank.

[0030] See also Figure 4The flame spraying device 300 includes a gas supply pipeline 301 connected to the gas outlet end of the liquefied gas supply system 500, and a plurality of gas supply branches 302 are connected to the gas supply pipeline 301 in sequence. The gas outlet end of each gas supply branch 302 is connected to a flame nozzle 303, and the plurality of flame nozzles 303 are arranged in sequence along the width direction of the heat blocking plate; a plurality of nozzle mounting holes are arranged on the surface of the nozzle fire shield 800, and the bottom of the flame nozzle 303 passes through the nozzle mounting holes and extends to the bottom of the nozzle fire shield 800. The top of the flame nozzle 303 is provided with an oxygen supply hole, one end of the nozzle fire shield 800 is fixed to the nozzle anti-blocking cover 700, and the other end of the nozzle fire shield 800 extends to the lower part of the front end of the inactivation and sterilization cover 400 and contacts the inactivation and sterilization cover 400. Field tests on the equipment showed that by adding multiple oxygen supply holes on the top of the flame nozzle 303, air enters through the oxygen supply holes, which can meet the oxygen demand of the flame nozzle 303. Therefore, the air supply channel in the existing technology is eliminated, which not only reduces the loss of internal heat, but also reduces the impact on the internal hot wind field.

[0031] See also Figure 5 The liquefied gas supply system 500 includes a heat exchange cooling device and multiple liquefied gas tanks 501 installed in the heat exchange cooling device. The heat exchange cooling device is arranged horizontally to correspond to the width of the heat blocking plate. The multiple liquefied gas tanks 501 are arranged in sequence along the width direction of the heat exchange cooling device. The gas outlets of the multiple liquefied gas tanks 501 are respectively connected to gas outlet branches 502. The multiple gas outlet branches 502 are connected to the same gas outlet pipeline 503. The gas outlet of the gas outlet pipeline 503 is connected to an oxygen terminal box 504. The gas outlet of the oxygen terminal box 504 is connected to the gas supply pipeline 301. During use, the flow rate of the flame nozzle can be adjusted by the regulating valve in the oxygen terminal box 504. The oxygen terminal box 504 is a prior art and will not be described in detail here.

[0032] The heat exchange cooling device includes a heat exchange water tank 505, which is loaded with heat exchange cooling water. The top of the heat exchange water tank 505 is provided with an opening of a liquefied tank 501, and the bottom end of the liquefied tank 501 is placed inside the heat exchange water tank 505 through the opening of the liquefied tank 501, and the bottom 1 / 3 of the liquefied tank 501 is immersed below the liquid level of the heat exchange cooling water; when the machine is operating, the heat blocking plate blocks most of the heat generated by the flame below, and a small amount of heat is transferred to the heat exchange water tank 505 through the heat blocking plate and absorbed by the heat exchange cooling water, reducing the heat transferred to the surface of the liquefied tank 501, which can avoid the heat transferred to the liquefied tank 501 and causing the high-temperature explosion of the liquefied tank 501, and during high-flow operation, when multiple liquefied tanks 501 are degased and vaporized at the same time, they can absorb the heat of the heat exchange cooling water to achieve the purpose of heating, thereby avoiding the phenomenon of surface frost. In this embodiment, the heat exchange water tank 505 acts as an intermediate medium, working in conjunction with the heat barrier plate to simultaneously protect the liquefied petroleum tanks from both high-temperature explosions and vaporization frost, enabling continuous operation of the equipment without downtime. The heat exchange cooling water within the heat exchange water tank 505 is interconnected, providing good fluidity. Therefore, the temperature of the heat exchange cooling water within the tank is consistent, meeting the frost prevention requirements of all liquefied petroleum tanks 501.

[0033] The number of the liquefied gas tanks 501 is at least three. Of course, the greater the number, the longer the machine can operate continuously. If used one by one, the liquefied gas bottles that are not deflated do not absorb heat. As the machine operates continuously, in a high-temperature environment, the bottle body will soon become a high-temperature body, which poses a safety risk. Therefore, all liquefied gas bottles need to be deflated at the same time before use.

[0034] The water exchange water tank 505 is a trough-type water tank with a closed bottom and an open top. The interior of the trough-type water tank is divided into multiple liquefied tank 501 accommodating areas by a water tank partition 506. The bottom surface of the water tank partition 506 is provided with a connecting hole connecting the adjacent liquefied tank 501 accommodating areas. Each of the liquefied tank 501 accommodating areas is provided with a corresponding liquefied tank 501. The top of the trough-type water tank is provided with an anti-overflow rubber layer, and the opening of the liquefied tank 501 is provided on the surface of the anti-overflow rubber layer.

[0035] A liquefaction tank 501 frame is provided above the trough-type water tank, the top of the liquefaction tank 501 is placed within the liquefaction tank 501 frame, a liquefaction tank 501 shielding plate is provided outside the liquefaction tank 501 frame, and an openable liquefaction tank 501 top cover is fastened to the top of the liquefaction tank 501.

[0036] A liquid level gauge is provided on the outside of the trough type water tank.

[0037] The frame 100 is also provided with an automatic water replenishing system which is in communication with the trough-type water tank.

[0038] Preliminary tests also show that, in the absence of a heat blocking plate and the heat dissipation water tank, the machine is in a high-temperature environment during operation, and the temperature of the gas cylinder can reach 100°C. At the same time, when it is in a low flow rate (single gun flow rate 20L / min), the gas cylinder temperature is above 100°C. Generally, the machine needs to be shut down once every half an hour, and each shutdown time is 5-10 minutes. When it is in a high flow rate (single gun flow rate 40L / min), since all gas cylinders vaporize and absorb heat at the same time, the vaporization is too fast, the liquefied gas cylinder absorbs heat, and the temperature of the liquefied gas cylinder drops sharply, generally around 0°C, which is prone to the occurrence of bottle bottom surface burns. The frosting phenomenon on the surface leads to a low gas utilization rate. Generally, the machine needs to be shut down once every half an hour of operation, and each shutdown time is 5-10 minutes, which reduces the inactivation effect. When a heat blocking plate and a heat dissipation water tank are provided at the same time, the gas cylinder is always in an ideal environment of 25℃-40℃, and can continue to operate. At the same time, the gas utilization rate is higher. It can be seen that the heat blocking plate and the heat dissipation water tank need to be used in conjunction with each other. The use of the two can solve the problems of high temperature on the surface of the liquefied gas bottle, rapid vaporization at high flow rate, and surface frosting, and ensure that the machine can meet the inactivation requirements under high flow and low flow operation requirements.

[0039] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A liquefied gas supply system for a high-temperature flame inactivation device for soil, the high-temperature inactivation device comprising a frame, the frame being provided with a counter-rotating tillage device, a flame spray device located above and behind the counter-rotating tillage device, and an inactivation and sterilization hood located behind the flame spray device. The frame is also provided with a liquefied gas supply system for supplying air to the flame spray device, characterized in that: The liquefied gas supply system is located above the counter-rotating tillage device and the flame jet device, and close to one side of the flame jet device. A rotary tillage retaining cover is provided above the counter-rotating tillage device, a nozzle anti-blocking cover is provided between the counter-rotating tillage device and the flame jet device, and a nozzle fire shield is further provided above the flame ejection port of the flame jet device. The rotary tillage retaining cover, the nozzle anti-blocking cover, the nozzle fire shield, and the inactivation and sterilization cover are connected end to end in sequence to form a heat blocking plate. The heat blocking plate blocks most of the high-temperature heat generated by the flame below the heat blocking plate, so that a small amount of heat is transferred to the liquefied gas supply system. The overall width of the heat blocking plate corresponds to the width of the inactivation and sterilization cover. The flame spraying device includes a gas supply pipeline connected to the gas outlet of the liquefied gas supply system, the gas supply pipeline is sequentially connected to a plurality of gas supply branches, the gas outlet end of each gas supply branch is connected to a flame spray head, and the plurality of flame spray heads are sequentially arranged along the width direction of the heat blocking plate; The liquefied gas supply system includes a heat exchange cooling device and a plurality of liquefied tanks installed in the heat exchange cooling device, the heat exchange cooling device is arranged horizontally corresponding to the width of the heat blocking plate, and the plurality of liquefied tanks are arranged in sequence along the width direction of the heat exchange cooling device, and the gas outlets of the plurality of liquefied tanks are respectively connected to gas outlet branches, and the plurality of gas outlet branches are connected to the same gas outlet pipeline, the gas outlet of the gas outlet pipeline is connected to an oxygen terminal box, and the gas outlet of the oxygen terminal box is connected to the gas supply pipeline; the heat exchange cooling device includes a heat exchange water tank, the The heat exchange water tank is loaded with heat exchange cooling water. The top of the heat exchange water tank is provided with a liquefaction tank opening. The bottom end of the liquefaction tank is placed inside the heat exchange water tank through the liquefaction tank opening. The bottom 1 / 3 of the liquefaction tank is immersed below the liquid level of the heat exchange cooling water. During operation, a small amount of heat below the heat blocking plate passes through the heat blocking plate and is transferred to the heat exchange water tank, and is absorbed by the heat exchange cooling water, thereby reducing the heat transferred to the surface of the liquefaction tank. When multiple liquefaction tanks are degassed and vaporized at the same time, the heat of the heat exchange cooling water is absorbed to achieve the purpose of heating.

2. The liquefied gas supply system for soil flame high temperature inactivation equipment according to claim 1, characterized in that: The water exchange water tank is a trough-type water tank with a closed bottom and an open top. The interior of the trough-type water tank is divided into multiple liquefied tank accommodating areas by a water tank partition. The bottom end surface of the water tank partition is provided with a connecting hole connecting the adjacent liquefied tank accommodating areas. Each of the liquefied tank accommodating areas is provided with a corresponding liquefied tank. The top of the trough-type water tank is provided with an anti-overflow rubber layer, and the liquefied tank opening is provided on the surface of the anti-overflow rubber layer.

3. The liquefied gas supply system for soil flame high temperature inactivation equipment according to claim 2, characterized in that: A liquefaction tank frame is provided above the trough-type water tank, the top of the liquefaction tank is placed in the liquefaction tank frame, a liquefaction tank shielding plate is provided outside the liquefaction tank frame, and an openable liquefaction tank top cover is buckled on the top of the liquefaction tank.

4. The liquefied gas supply system for soil flame high temperature inactivation equipment according to claim 2, characterized in that: A liquid level gauge is provided on the outside of the trough type water tank.

5. The liquefied gas supply system for soil flame high temperature inactivation equipment according to claim 2, characterized in that: The frame is also provided with an automatic water replenishing system which is in communication with the trough-type water tank.

6. The liquefied gas supply system for soil flame high temperature inactivation equipment according to claim 1, characterized in that: The rotary tillage soil retaining cover, the nozzle anti-blocking cover, the nozzle fire shield and the inactivation and sterilization cover are all made of metal, and a heat-insulating layer is laid on the outer surface of the inactivation and sterilization cover.

7. The liquefied gas supply system for soil flame high temperature inactivation equipment according to claim 1, characterized in that: A plurality of nozzle mounting holes are arranged on the surface of the nozzle fire shield, the bottom of the flame nozzle passes through the nozzle mounting hole and extends to the bottom of the nozzle fire shield, the top of the flame nozzle is provided with an oxygen supply hole, one end of the nozzle fire shield is fixed on the nozzle anti-blocking cover, and the other end of the nozzle fire shield extends to the lower part of the front end of the inactivation and sterilization cover and contacts the inactivation and sterilization cover.

Images