High-temperature chain contact heat exchange gas-fired flame inactivation apparatus

Abstract

The application discloses a high-temperature chain contact type heat exchange gas supply type flame inactivation equipment, which comprises a rack, a reverse rotary plough device, a flame injection device, an inactivation and insecticidal cover and a liquefied gas supply system, a heat conduction chain group is arranged at the lower front part of the inactivation and insecticidal cover and used for increasing the inactivation contact area and inactivation time of soil, the rotary plough soil retaining cover, the nozzle anti-blocking cover, the nozzle fire-retarding cover and the inactivation and insecticidal cover are sequentially connected in a head-tail mode to form a heat blocking plate, most of the high-temperature heat generated by the flame is blocked below the heat blocking plate, a small part of the heat is transmitted to the liquefied gas supply system, the temperature of the liquefied bottle is prevented from being too high, and a heat exchange water tank is additionally arranged and used for preventing the liquefied bottle from frosting after heat absorption, and the high-efficiency inactivation and high-quality inactivation of the machine tool can be realized through the cooperation of the structures.

Description

Technical Field

[0001] The present invention relates to an inactivation device, in particular to a high-temperature chain contact type heat exchange and air supply type flame inactivation device. 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 horizontal rotary tillage device, a flame spraying device and an inactivation insecticide cover located at the lower rear 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 horizontal 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 flame backward-moving airflow, and the flame backward-pushing airflow pushes the flame in the flame inactivation chamber to diffuse toward the forced high-temperature chamber on the rear side; the inactivation insecticide 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 insecticide treatment on the soil. The above patent is a prior patent application of the applicant of this application. After the production of the equipment, field tests were carried out and the following technical problems exist:

[0004] 1. Field tests have shown that when the machine is operated at a low speed of 0-1km / h, the physical insulation of the insecticide cover can achieve a soil temperature of 600°C in a short time, achieving a good sterilization effect. However, when the machine is operated at a normal speed of 3-5km / h, the soil temperature can rise to 200°C in a short time. However, due to the fast movement speed of the machine, the heated area of ​​the soil is small and the heating time is short, which cannot meet the sterilization requirements, resulting in a poor inactivation effect. At the same time, since the flame directly heats the soil for inactivation in a non-contact manner, it is greatly affected by the wind field. In addition, when the horizontal rotary tiller is in reverse rotation, the reverse rotation operation will cause a large disturbance in the surrounding air, forming a complex airflow movement, resulting in uneven wind field distribution. The wind field is different in different The speed and direction of the position may vary, which leads to a non-constant contact time between the air and the flame, and a non-constant temperature of the hot air in the air, and thus the soil heating process of the hot air is not in a stable state; and, in order to meet the oxygen supply, the patent adds an air supply channel between the flame guide top plate and the flame injection device. The air supply channel can ensure that sufficient air enters and directly contacts the flame injection device, and the oxygen intake is sufficient. However, after the air enters the inactivation and insecticide cover through the air supply channel, it directly contacts the surface of the ejected flame, which interacts with the airflow disturbance caused by the back rotation, so that the inside of the inactivation and insecticide cover forms a non-steady-state heating state, and its sterilization effect cannot reach the best, and it cannot ensure that the soil heating is in a stable state.

[0005] Second, the field test shows that a large amount of heat will be lost from the gas supply channel, which will not only reduce the heat storage effect of the inactivation insecticide cover, but also the heat will move up and be quickly transferred to the liquefied bottle, so that the liquefied bottle is in a high temperature environment, and the temperature of the liquefied bottle is as high as 100°C or more. When the liquefied bottle is operated at a low flow rate, the liquefied bottle can reach 100°C in about 1min. Generally, the operation 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 disadvantages in adopting such a liquefied bottle for gas supply. When the liquefied bottle is operated at a high flow rate, due to excessive vaporization, the liquefied bottle absorbs heat too quickly, and the temperature drops sharply, generally around 0°C, and frost is easily formed on the bottom surface of the bottle, which affects fuel vaporization and makes it impossible to fully use the gas. Generally, the operation 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 bottle and excessive frost on the surface of the high-flow vaporization bottle.

[0006] When the implement is actually working, it is necessary to make an empirical judgment according to the field weed situation, soil condition and other factors to select low-speed operation or normal speed operation and high-flow operation or low-flow operation of the liquefied bottle. When the normal speed operation is performed, the liquefied bottle needs to be adjusted to high-flow operation. In this state, it can be known from the above description that not only the problem of frost formation caused by too fast vaporization of the liquefied bottle exists, but also the problems of small soil heating area and short heating time exist, which result in that the implement cannot realize efficient inactivation and high-quality inactivation when the normal speed operation is performed. When the low-speed operation is performed, the liquefied bottle can select high-flow operation or low-flow operation according to the need. When the low-flow operation is performed, the temperature of the liquefied bottle is too high, and the situation of explosive pressure increase and the like occurs, which is not safe for use and needs to be handled intermittently, so that efficient inactivation cannot be realized. SUMMARY

[0007] In view of the above technical problems, the present application improves the flame instantaneous inactivation equipment in the prior art, and provides a high-temperature chain contact heat exchange gas supply type flame inactivation equipment, which is used to simultaneously meet the high-flow and low-flow operation requirements of normal speed operation and low-speed operation, and simultaneously meet efficient operation and high-quality inactivation.

[0008] To solve the above technical problems, the technical scheme of the present application is as follows: a high-temperature chain contact heat exchange gas supply type flame inactivation equipment, comprising a rack, a reverse rotation rotary tiller device is arranged on the rack, a flame injection device is arranged above the rear side of the reverse rotation rotary tiller device, an inactivation and insecticidal cover is arranged at the rear side of the flame injection device, a liquefied gas supply system for supplying gas to the flame injection device is further arranged on the rack,

[0009] The inactivation and insecticidal cover is a cover body structure with an open front end and lower end and a top end parallel to the soil surface. The top end, both side ends and the rear end of the inactivation and insecticidal cover form a semi-closed high-temperature inactivation cavity. A pressure relief plate is swing-connected to the rear end of the inactivation and insecticidal cover. The height of the inactivation and insecticidal cover corresponds to the height of the flame injection port of the bottom end of the flame injection device, and both are located at an upper position in the middle of the reverse rotation rotary tiller device. The flame injection port of the flame injection device is inclined towards the front part of the high-temperature inactivation cavity in the rear direction.

[0010] 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 insecticide 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 insecticide cover.

[0011] A heat-conducting chain group is provided at the lower front portion of the inactivation and insecticide cover, the heat-conducting chain group including a hole chain mounting plate, both ends of the hole chain mounting plate being floatingly mounted in the inactivation and insecticide cover via mounting plate swing arms, a plurality of heat-conducting hole chains are spaced apart on the hole chain mounting plate, the plurality of heat-conducting hole chains are arranged along the width direction of the inactivation and insecticide cover, the front end of the heat-conducting hole chain is mounted on the hole chain mounting plate, the heat-conducting hole chain hangs down and contacts the soil surface, the heat-conducting hole chain is located in the flame spraying zone below and behind the flame spraying device, and the distance between the front end of the heat-conducting hole chain and the counter-rotating rotary tillage device is greater than the length of the heat-conducting hole chain;

[0012] When the machine is operating, the flame spraying device sprays flames toward the flame spraying area at the rear and lower part, and the counter-rotating rotary tillage device throws soil backward. The soil moves backward into the flame spraying area for a first throwing flame inactivation, and the flame is sprayed toward the rear and lower part through the soil, performing a secondary surface flame inactivation on the rear and lower soil surface. At the same time, the heat-conducting hole chain is heated. The heated heat-conducting hole chain is dragged along with the forward movement of the machine, disturbing and cutting into the soil surface, and performing a third contact high-temperature inactivation on the contacted soil. During the inactivation process, the high-temperature heat accumulated in the inactivation and insecticide cover forms a high-temperature inactivation environment, and the surface soil is subjected to a fourth surface high-temperature inactivation.

[0013] The liquefied gas supply system includes a heat exchange cooling device and a plurality of liquefied gas tanks installed in the heat exchange cooling device, the gas outlet ends of the plurality of liquefied gas tanks are connected to the flame jet device to supply gas to the flame jet device, and the heat exchange cooling device is horizontally arranged to correspond to the width of the heat blocking plate; the heat exchange cooling device includes a heat exchange tank, which is loaded with heat exchange cooling water, the top of the heat exchange tank is provided with a liquefied tank opening, the bottom end of the liquefied tank is placed in the interior of the heat exchange tank through the liquefied tank opening, and the bottom 1 / 3 of the liquefied tank 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 tank through the heat blocking plate and is absorbed by the heat exchange cooling water, thereby reducing the heat transferred to the surface of the liquefied tank. When the plurality of liquefied tanks are released and vaporized at the same time, the heat of the heat exchange cooling water is absorbed to achieve the purpose of heating.

[0014] As a preferred technical solution, the mounting plate swing arm includes a horizontal swing arm, the front end of the horizontal swing arm is hinged on the inactivation insecticide cover, the rear end of the horizontal swing arm is connected to the vertical swing arm, the hole chain mounting plate is connected to the bottom end of the vertical swing arm, and a limit stop column is provided at the corner of the horizontal swing arm and the vertical swing arm, and the limit stop column is fixed on the inactivation insecticide cover to support the mounting plate swing arm at the upper limit.

[0015] As an optimal technical solution, the hole chain mounting plate is an L-shaped mounting plate, the vertical plate of the L-shaped mounting plate is tilted backward and the bottom plate is tilted downward, both of which serve as the soil-facing surface. A number of chain partitions are arranged at intervals on the surface of the L-shaped mounting plate. The heat-conducting hole chain is a large-hole iron chain with a smooth surface. A large-hole iron chain is arranged between two connected chain partitions. A long pin shaft is connected between the left and right mounting plate swing arms. Each of the large-hole iron chains is respectively mounted outside the long pin shaft, and the long pin shaft passes through each of the chain partitions.

[0016] As a preferred technical solution, the flame spraying device includes a gas supply pipeline connected to the gas outlet end of the liquefied gas supply system, and a number of gas supply branches are connected to the gas supply pipeline in sequence. The gas outlet end of each gas supply branch is connected to a flame nozzle, and the multiple flame nozzles are arranged in sequence along the width direction of the heat blocking plate.

[0017] As a preferred technical solution, multiple liquefied gas tanks are arranged in sequence along the width direction of the heat exchange cooling device, and the gas outlets of the multiple liquefied gas tanks are respectively connected to gas outlet branches, and the multiple gas outlet branches are connected to the same gas outlet pipeline, and 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.

[0018] As a preferred technical scheme, the heat exchange water tank is a groove type water tank with a closed bottom end and an open top end, the inside of the groove type water tank is divided into a plurality of liquefied tank accommodating areas by a water tank partition plate, the bottom end surface of the water tank partition plate is provided with a communication hole communicating adjacent liquefied tank accommodating areas, each liquefied tank accommodating area is correspondingly provided with one liquefied tank, the top end of the groove type water tank is provided with an anti-overflow rubber layer, and the opening of the liquefied tank is arranged on the surface of the anti-overflow rubber layer.

[0019] As a preferred technical scheme, the groove type water tank is provided with a liquefied tank frame above the groove type water tank, the liquefied tank is arranged in the liquefied tank frame, the liquefied tank frame is provided with a liquefied tank shielding plate outside the liquefied tank frame, and the liquefied tank is provided with an openable liquefied tank top cover on the top end of the liquefied tank.

[0020] As a preferred technical scheme, the rotary tillage soil retaining cover, the nozzle anti-blocking cover, the nozzle flame retaining cover and the inactivation and insecticidal cover are all made of metal material, and the inactivation and insecticidal cover is provided with a heat preservation layer on the outer surface.

[0021] As a preferred technical scheme, the surface of the nozzle flame retaining cover is provided with a plurality of nozzle mounting holes, the bottom of the flame nozzle extends into the lower part of the nozzle flame retaining cover through the nozzle mounting holes, the top of the flame nozzle is provided with an oxygen supplement hole, one end of the nozzle flame retaining cover is fixed on the nozzle anti-blocking cover, and the other end of the nozzle flame retaining cover extends to the lower part of the front end of the inactivation and insecticidal cover and is in contact with the inactivation and insecticidal cover.

[0022] Due to the adoption of the above technical scheme, the application has the following beneficial effects:

[0023] 1. When the machine moves forward, the hole chain mounting plate will first contact the soil and smooth the soil it passes through. Since the mounting plate swing arm can swing backward and upward, the hole chain mounting plate also has good profiling and obstacle-crossing effects. As the machine moves forward, the heat-conducting hole chain is dragged forward to disturb the soil and cut into the soil surface to turn the soil. At the same time, the heat-conducting hole chain cuts into the soft soil surface, increasing the heating and inactivation contact area between the iron chain and the soil. The iron chain heats while turning the soil, which not only makes the soil surface heated evenly, but also makes the surface soil heated by the heat-conducting hole chain during the turning process, and sprays The flame can also be sprayed onto the soil exposed on the surface, effectively increasing the flame-inactivation contact area between the flame and the soil. This direct soil-contact inactivation method can compensate for the effects of wind and further ensure the inactivation effect. Most importantly, because the heat-conducting hole chain has a certain length, it can increase the contact time with the soil, which is used to compensate for the short contact time between the flame and the soil at normal machine speeds. As the heat-conducting hole chain cuts into the soil, it heats and inactivates the soil through contact, increasing the inactivation area and time, and better meeting the inactivation requirements at normal machine speeds. In the prior art, the spacing between flame nozzles and the airflow from the counter-rotating rotary tillage device in the front make it difficult to ensure a balanced inactivation effect on the soil within the corresponding width. However, since several heat-conducting hole chains can completely turn over the soil within the corresponding width and inactivate it at high temperature, adding these heat-conducting hole chains can ensure balanced inactivation of the soil within the corresponding width.

[0024] Second, when the machine is operating, the heat barrier blocks most of the heat generated by the flame below. A small amount of heat passes through the heat barrier and is transferred to the heat exchange water tank, where it is absorbed by the heat exchange cooling water. This reduces the amount of heat transferred to the surface of the liquefied tank, preventing heat transfer to the liquefied tank and causing a high-temperature explosion. Furthermore, during high-flow operation, when multiple liquefied tanks simultaneously release gas and vaporize, they can absorb the heat from the heat exchange cooling water to achieve the purpose of increasing the temperature. The heat exchange water tank acts as an intermediate medium and is used in conjunction with the heat barrier to simultaneously prevent the liquefied tank from high-temperature explosion and vaporization and frosting, achieving continuous operation of the machine without stopping.

[0025] 3. The heat blocking plate in this equipment is used in conjunction with the heat-conducting chain group. When only the heat-conducting chain group is used and the air supply channel is not closed, even if the heat-conducting chain group can increase the soil inactivation time and the soil contact time, the heat will be discharged through the unclosed channel, and the temperature in the inactivation insecticide cover will dissipate quickly. On the one hand, the inactivation effect will be deteriorated, and on the other hand, the temperature of the liquefied bottle will be better. When only the heat blocking plate is used and the heat-conducting chain group is not set, although the heat loss can be reduced, when the machine is operating at normal speed, due to the high operating speed, there are problems such as small soil heating area and short heating time, which makes it impossible to achieve efficient inactivation and high-quality inactivation. Therefore, the heat blocking plate and the heat-conducting chain group need to be used in conjunction. The use of the two can achieve efficient inactivation and high-quality inactivation at the same time, and can also avoid heat loss causing high temperature of the liquefied bottle.

[0026] 4. 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 low gas utilization rate and the need to shut down the machine for processing, which reduces the inactivation efficiency of the equipment. Therefore, the heat blocking plate and the heat dissipation water tank need to be used in conjunction with each other. 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 rate, and surface frost. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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.

[0028] Figure 1 It is a structural diagram of an embodiment of the present invention;

[0029] Figure 2 It is a structural schematic diagram of another angle of an embodiment of the present invention;

[0030] Figure 3 is a cross-sectional view of an embodiment of the present invention;

[0031] Figure 4 yes Figure 3 A magnified schematic diagram of point A in the middle;

[0032] Figure 5 This is a schematic structural diagram of a heat transfer chain assembly according to an embodiment of the present invention;

[0033] Figure 6 This is a structural diagram of the heat-conducting chain assembly from another angle according to an embodiment of the present invention;

[0034] Figure 7 yes Figure 6 A magnified schematic diagram of point B in the middle;

[0035] Figure 8 is a cross-sectional view of a heat-conducting chain assembly according to an embodiment of the present invention;

[0036] Figure 9 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;

[0037] Figure 10 is a schematic structural diagram of a liquefied gas supply system according to an embodiment of the present invention;

[0038] Figure 11 This is a schematic structural diagram of a water exchange tank according to an embodiment of the present invention;

[0039] In the figure: 1-frame; 2-counter-rotating tillage device; 3-flame jet device; 3a-air supply pipeline; 3b-air supply branch pipe; 3c-flame nozzle; 4-insecticide hood; 5-liquefied gas supply system; 5a-liquefied tank; 5b-heat exchange water tank; 5c-air outlet branch pipe; 5d-air outlet pipeline; 5e-oxygen terminal box; 6-high-temperature inactivation chamber; 7-pressure relief plate; 8-rotary tillage retaining cover; 9-nozzle anti-blocking cover; 10-nozzle fire shield; 11-heat conduction chain group 11a-hole chain mounting plate; 11b-mounting plate swing arm; 11c-heat conduction hole chain; 11d-limiting column; 11e-chain partition; 11f-long pin shaft. DETAILED DESCRIPTION

[0040] 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.

[0041] like Figures 1 to 3 As shown, the high-temperature chain contact type heat exchange air supply flame inactivation equipment includes a frame 1, on which is provided a counter-rotating rotary tillage device 2, a flame spraying device 3 located above and behind the counter-rotating rotary tillage device 2, and an inactivation insecticide cover 4 located behind the flame spraying device 3. The frame 1 is also provided with a liquefied gas supply system 5 for supplying air to the flame spraying device 3. The counter-rotating rotary tillage device 2 is a device with a function of throwing soil backwards. Its structure and working principle are prior art and will not be described in detail here. The flame spraying device 3 is used to spray flames into the inactivation insecticide cover 4 to achieve flame inactivation and high-temperature inactivation of the soil. The inactivation insecticide cover 4 is used in conjunction with the flame spraying device 3 to provide a high-temperature environment to better achieve the inactivation effect. The liquefied gas supply system 5 is used to supply air to the flame spraying device 3.

[0042] See also Figure 3The inactivation and insecticidal cover 4 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 rear end of the inactivation and insecticidal cover 4 enclose a semi-closed high-temperature inactivation chamber 6. The rear end of the inactivation and insecticidal cover 4 is swingably connected to a pressure relief plate 7. The height of the inactivation and insecticidal cover 4 corresponds to the height of the flame jetting port at the bottom end of the flame jetting device 3, and both are located in the upper middle part of the counter-rotating rotary tillage device 2. The flame jetting port of the flame jetting device 3 is tilted backward and sprays toward the front of the high-temperature inactivation chamber 6. The inactivation insecticide cover 4 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 is 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 2 throws the soil backward, 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 insecticide cover 4. The top of the live insecticide cover 4 is parallel to the soil, and its height corresponds to the height of the flame injection port, and both are located in the upper middle part of the counter-rotating rotary tillage device 2. At this time, the height of the live insecticide cover 4 is approximately located at about 2 / 3 of the counter-rotating rotary tillage device 2. Compared with the live insecticide cover 4 in the prior art, the height is nearly doubled, which can effectively solve the soil blockage problem and ensure smooth hot air convection. The tail space of the live insecticide cover 4 can be fully utilized, and the heat in the tail space can still play a high-temperature inactivation role.

[0043] See also Figure 4The liquefied gas supply system 5 is located above the counter-rotating tillage device 2 and the flame spraying device 3, and is close to one side of the flame spraying device 3. A rotary tillage retaining cover 8 is provided above the counter-rotating tillage device 2, a nozzle anti-blocking cover 9 is provided between the counter-rotating tillage device 2 and the flame spraying device 3, and a nozzle fire shield 10 is provided above the flame injection port of the flame spraying device 3. The rotary tillage retaining cover 8, the nozzle anti-blocking cover 9, the nozzle fire shield 10, and the inactivation and killing cover 4 The heat blocking plate 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, allowing a small amount of heat to be transferred to the liquefied gas supply system 5. The overall width of the heat blocking plate corresponds to the width of the inactivation insecticide cover 4. The rotary tillage retaining cover 8, the nozzle anti-blocking cover 9, the nozzle fire shield 10, and the inactivation insecticide cover 4 are all made of metal. A thermal insulation layer is laid on the outer surface of the inactivation insecticide cover 4 to achieve a thermal insulation effect. The present device forms a heat blocking plate by connecting the rotary tillage retaining cover 8, the nozzle anti-blocking cover 9, the nozzle fire shield 10, and the inactivation insecticide cover 4 end to end, eliminating the air supply channel in the prior art, blocking most of the high-temperature heat generated by the flame below the heat blocking plate, and allowing a small amount of heat to be transferred to the liquefied gas bottle. This can avoid the high temperature of the liquefied gas bottle, ensure the safe use of the liquefied gas bottle, and achieve the purpose of continuous operation of the machine without stopping. The metal material can withstand high temperatures and ensure service life. On the other hand, it can block heat without completely isolating the heat, and ensure that some heat can be transferred to the water exchange tank above. When used in conjunction with the heat exchange tank, it can achieve the effect of simultaneously lowering the temperature of the liquefied tank and preventing the liquefied tank from frosting.

[0044] See also Figures 5 to 8A heat-conducting chain group 11 is provided at the lower front portion of the inactivation insecticide cover 4. The heat-conducting chain group 11 includes a hole chain mounting plate 11a. Both ends of the hole chain mounting plate 11a are floatingly mounted in the inactivation insecticide cover 4 through mounting plate swing arms 11b. A plurality of heat-conducting hole chains 11c are spaced apart on the hole chain mounting plate 11a. The plurality of heat-conducting hole chains 11c are arranged along the width direction of the inactivation insecticide cover 4. The front end of the heat-conducting hole chain 11c is mounted on the hole chain mounting plate 11a. The heat-conducting hole chain 11c hangs down and contacts the soil surface. The heat-conducting hole chain 11c is provided on the hole chain mounting plate 11a. 1c is located in the flame spraying area below and behind the flame spraying device 3, and the distance between the front end of the heat-conducting hole chain 11c and the counter-rotating rotary tillage device 2 is greater than the length of the heat-conducting hole chain 11c; the height of the hole chain mounting plate 11a is substantially level with the height of the soil surface, and one end of the heat-conducting hole chain 11c is mounted on the hole chain mounting plate 11a. When the machine moves forward, the hole chain mounting plate 11a will first contact the soil and smooth the soil it passes through, and because the mounting plate swing arm 11b can swing backward and upward, the hole chain mounting plate 11a It also has good profiling and obstacle-crossing effects, and the heat-conducting hole chain 11c is dragged forward to disturb the soil as the machine moves forward, cutting into the soil surface to play the role of turning the soil, and at the same time, the heat-conducting hole chain 11c cuts into the soft soil surface, increasing the heating and inactivation contact area between the iron chain and the soil, and the iron chain heats while turning the soil, which not only makes the soil surface heated evenly, but also makes the surface soil heated by the heat-conducting hole chain 11c during the turning process, and the sprayed flame can also perform flame spraying on the soil exposed on the surface, which can effectively improve the fire The flame inactivation contact area between the flame and the soil, this direct contact inactivation method with the soil, can compensate for the impact of the wind field and further ensure the inactivation effect; most importantly, because the heat-conducting hole chain 11c has a certain length, it can increase the contact time with the soil, which is used to compensate for the short contact time between the flame and the soil under the normal speed of the machine. When the heat-conducting hole chain 11c cuts into the soil, it heats and inactivates by contact, thereby increasing the inactivation area and inactivation time, which can better meet the inactivation requirements under the normal speed of the machine. In the prior art, there are gaps between the flame nozzles, and the airflow caused by the front counter-rotating rotary tillage device 2 makes it difficult to ensure a balanced inactivation effect on the soil within the corresponding width. However, because several heat-conducting hole chains 11c can turn over the entire width of the soil within the corresponding width and inactivate it at high temperature, by adding these heat-conducting hole chains 11c, balanced inactivation of the soil within the corresponding width can be ensured.

[0045] See also Figure 7The mounting plate swing arm 11b includes a horizontal swing arm, the front end of the horizontal swing arm is hinged on the inactivation insecticide cover 4, the rear end of the horizontal swing arm is connected to the vertical swing arm, the hole chain mounting plate 11a is connected to the bottom end of the vertical swing arm, and a limit stop column 11d is provided at the corner of the horizontal swing arm and the vertical swing arm. The limit stop column 11d is fixed on the inactivation insecticide cover 4 to support the mounting plate swing arm 11b in the upper limit position. The corner between the horizontal swing arm and the vertical swing arm is supported on the limit stop column 11d to limit the lowest position of the mounting plate swing arm 11b, but the mounting plate swing arm 11b can swing upward around the inactivation insecticide cover 4 to adapt to changes in soil height and has a floating profiling effect.

[0046] See also Figure 8 The hole chain mounting plate 11a is an L-shaped mounting plate, the vertical plate of the L-shaped mounting plate is tilted backward and the bottom plate is tilted downward, both of which serve as the soil-facing surface. A number of chain partitions 11e are arranged at intervals on the surface of the L-shaped mounting plate. The heat-conducting hole chain 11c is a large-hole iron chain with a smooth surface. A large-hole iron chain is arranged between two connected chain partitions 11e. A long pin shaft 11f is connected between the left and right mounting plate swing arms 11b. Each of the large-hole iron chains is respectively mounted outside the long pin shaft 11f, and the long pin shaft 11f passes through each of the chain partitions 11e. The distance between two adjacent heat-conducting hole chains 11c is less than the width of one heat-conducting hole chain 11c, and the distance between two adjacent heat-conducting hole chains 11c is slightly closer. Since the iron rings of the heat-conducting hole chains 11c have greater freedom, the heat-conducting hole chains 11c can turn over and heat the soil at the distance between the two connected heat-conducting hole chains 11c when turning over and cutting the soil. Therefore, several heat-conducting hole chains 11c can turn over the entire width of the soil under the corresponding width and inactivate it at high temperature, achieving a better inactivation effect.

[0047] The heat-conducting hole chain 11c is a large-hole iron chain made of stainless steel with a smooth surface, which is connected by multiple iron rings. On the one hand, it has a certain weight, and the ring-shaped iron chain can better cut into the soil surface, increasing the contact area with the soil; on the other hand, the iron chain is a large-hole iron chain. In a high-temperature environment, the straw will become soft when heated and get hooked in time. As the machine moves forward, it will also liquefy and fall off automatically. At the same time, in order to avoid the problem of the iron chain getting hooked on the straw, the structural state before operation is first changed, and the straw is crushed to reduce the risk of straw getting hooked.

[0048] Since the heat-conducting hole chain 11c is connected by a plurality of iron rings, the position and angle of the iron rings will change randomly when the iron rings move randomly. When the plurality of iron rings flow through the soil respectively, they have a disturbing effect on the soil, and the soil is turned over during the disturbance process, which not only increases the high-temperature inactivation contact area between the iron chain and the soil, but also during the turning of the soil, the sprayed flame can also perform flame spraying on the soil exposed on the surface, which can effectively increase the flame inactivation contact area between the flame and the soil.

[0049] See also Figures 9 to 11 The liquefied gas supply system 5 includes a heat exchange cooling device and a plurality of liquefied tanks 5a installed in the heat exchange cooling device. The gas outlet ends of the plurality of liquefied tanks 5a are connected to the flame injection device 3 to supply gas to the flame injection device 3. The heat exchange cooling device is arranged horizontally to correspond to the width of the heat blocking plate; the heat exchange cooling device includes a heat exchange water tank 5b, which is loaded with heat exchange cooling water. The top of the heat exchange water tank 5b is provided with a liquefied tank 5a opening, and the bottom end of the liquefied tank 5a is placed inside the heat exchange water tank 5b through the liquefied tank 5a opening. The bottom one-third of the heat exchanger tank 5a is submerged below the surface of the heat exchange cooling water. During machine operation, the heat barrier blocks most of the heat generated by the flame. A small amount of heat passes through the heat barrier and is transferred to the heat exchanger tank 5b, where it is absorbed by the heat exchanger cooling water. This reduces the amount of heat transferred to the surface of the liquefied tank 5a, preventing heat transfer to the liquefied tank 5a and potentially causing it to explode. Furthermore, during high-flow operation, when multiple liquefied tanks 5a simultaneously release gas and vaporize, they absorb the heat from the heat exchanger cooling water to raise their temperature and prevent frost from forming on their surfaces. In this embodiment, the heat exchanger tank 5b acts as an intermediary, working in conjunction with the heat barrier to simultaneously protect the liquefied tanks from both high-temperature explosion and vaporization frost, enabling continuous machine operation without downtime. The heat exchanger cooling water within the heat exchanger tank 5b is interconnected, providing good fluidity. Therefore, the heat exchanger cooling water temperature within the tank is consistent, meeting the frost prevention requirements of all liquefied tanks 5a.

[0050] The number of the liquefied gas tanks 5a 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.

[0051] See also Figure 9The flame spraying device 3 includes a gas supply line 3a connected to the outlet of the liquefied gas supply system 5. Several gas supply branches 3b are sequentially connected to the gas supply line 3a. Each gas supply branch 3b is connected to a flame nozzle 3c at its outlet. Multiple flame nozzles 3c are arranged sequentially along the width of the heat blocking plate. The surface of the nozzle fire shield 10 is provided with several nozzle mounting holes. The bottom of the flame nozzle 3c extends through the nozzle mounting holes and extends below the nozzle fire shield 10. An oxygen supply hole is provided at the top of the flame nozzle 3c. One end of the nozzle fire shield 10 is fixed to the nozzle anti-blocking cover 9. The other end of the nozzle fire shield 10 extends to the lower portion of the front end of the insecticide hood 4 and contacts the insecticide hood 4. Field tests on the equipment showed that by adding multiple oxygen supply holes on the top of the flame nozzle 3c, air enters through the oxygen supply holes, which can meet the oxygen demand of the flame nozzle 3c. 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.

[0052] See also Figure 10 The plurality of liquefied gas tanks 5a are arranged in sequence along the width of the heat exchange cooling device. The gas outlets of the plurality of liquefied gas tanks 5a are respectively connected to gas outlet branches 5c. The plurality of gas outlet branches 5c are connected to the same gas outlet pipeline 5d. The gas outlet of the gas outlet pipeline 5d is connected to an oxygen terminal box 5e. The gas outlet of the oxygen terminal box 5e is connected to the gas supply pipeline 3a. During use, the flow rate of the flame nozzle can be adjusted by a regulating valve within the oxygen terminal box 5e. The oxygen terminal box 5e is conventional and will not be described in detail here.

[0053] See also Figure 11 The heat exchange water tank 5b 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 5a storage areas by a water tank partition. The bottom surface of the water tank partition is provided with a communication hole that connects adjacent liquefied tank 5a storage areas. Each liquefied tank 5a storage area corresponds to a liquefied tank 5a. The top of the trough-type water tank is provided with an anti-overflow rubber layer, and the opening of the liquefied tank 5a is located on the surface of the anti-overflow rubber layer. A liquefied tank frame is provided above the trough-type water tank, and the top of the liquefied tank 5a is placed within the liquefied tank frame. A liquefied tank shield is provided outside the liquefied tank frame, and an openable liquefied tank cover is fastened to the top of the liquefied tank.

[0054] The working principle of this embodiment is:

[0055] When the machine is operating, there are four inactivation processes, and the inactivation effect is greatly improved. The specific analysis is as follows:

[0056] One-time flame inactivation: the flame spraying device 3 sprays flames toward the flame spraying area at the rear and lower part, and the counter-rotating rotary tillage device 2 scatters soil backward, and the soil moves backward into the flame spraying area for one-time flame inactivation;

[0057] Secondary surface flame inactivation: The flame is ejected through the scattered soil toward the rear and lower part, performing secondary surface flame inactivation on the soil surface at the rear and lower part;

[0058] Three-contact high-temperature inactivation: The flame heats the heat-conducting hole chain 11c, and the heated heat-conducting hole chain 11c is dragged forward with the tool, disturbing and cutting into the soil surface, and performing three-contact high-temperature inactivation on the soil in contact. At the same time, the soil is turned over, and the flame can flame inactivate the soil exposed on the surface, further improving the inactivation effect of the secondary surface flame inactivation;

[0059] Four times of surface high temperature inactivation: During the above three inactivation processes, the high temperature heat accumulated in the inactivation and insecticide cover 4 forms a high temperature inactivation environment, and the surface soil is inactivated at high temperature four times.

[0060] Preliminary tests of this equipment have shown that when the machine selects low-speed operating conditions, the soil temperature can reach 600°C in a short time, and when the machine selects normal operating conditions, the soil temperature can reach 200°C in a short time, and the chain temperature can reach 250-350°C. Since the temperature required for soil inactivation reaches 90°C, the temperature requirement can be met. However, due to the accelerated normal operating speed of the machine, its inactivation time is short, and the inactivation effect cannot be achieved well. However, the chain moves forward with the machine, turning the soil, and cutting into the soil surface, which increases the heated area and heating time of the soil, further realizing the heating of a large area of ​​soil temperature, and achieving a better inactivation purpose. It can be seen that the operating speed of the machine can be increased through the design of the chain, ensuring that the equipment can meet the inactivation requirements under various operating speed requirements; the heat blocking plate and the guide plate in this equipment The heat chain group 11 is used in combination. When only the heat-conducting chain group 11 is used and the air supply channel is not closed, even if the heat-conducting chain group 11 can increase the soil inactivation time and the soil contact time, the heat will be discharged through the unclosed channel, and the temperature in the inactivation insecticide cover 4 will dissipate quickly. On the one hand, the inactivation effect will be worse, and on the other hand, the temperature of the liquefied bottle will be better; when there is only a heat blocking plate and the heat-conducting chain group 11 is not set, although the heat loss can be reduced at this time, when the machine is operating at normal speed, due to the fast running speed, there are problems such as small soil heating area and short heating time, which makes it impossible to achieve efficient inactivation and high-quality inactivation; therefore, the heat blocking plate and the heat-conducting chain group 11 need to be used in combination. The combination of the two can achieve efficient inactivation and high-quality inactivation at the same time, and can also avoid heat loss causing high temperature of the liquefied bottle.

[0061] 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.

[0062] 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 high-temperature chain-type contact-type heat exchange and air supply flame inactivation device comprising a frame, on which is mounted a counter-rotating tillage device, a flame spray device located above and behind the counter-rotating tillage device, and an inactivation and insecticide hood located behind the flame spray device. The frame is also equipped with a liquefied gas supply system for supplying air to the flame spray device, characterized in that: The inactivation insecticide cover is a cover structure with an open front end and a lower end and a top end parallel to the soil surface. The top end, both side ends and the rear end of the inactivation insecticide cover enclose a semi-enclosed high-temperature inactivation chamber. The rear end of the inactivation insecticide cover is swingably connected to a pressure relief plate. The height of the inactivation insecticide cover corresponds to the height of the flame ejection port at the bottom end of the flame ejection device, and both are located in the middle and upper part of the counter-rotating rotary tillage device. The flame ejection port of the flame ejection device is tilted backward and ejects toward the front of the high-temperature inactivation chamber. 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 insecticide 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 insecticide cover. A heat-conducting chain group is provided at the lower front portion of the inactivation and insecticide cover, the heat-conducting chain group including a hole chain mounting plate, both ends of the hole chain mounting plate being floatingly mounted in the inactivation and insecticide cover via mounting plate swing arms, a plurality of heat-conducting hole chains are spaced apart on the hole chain mounting plate, the plurality of heat-conducting hole chains are arranged along the width direction of the inactivation and insecticide cover, the front end of the heat-conducting hole chain is mounted on the hole chain mounting plate, the heat-conducting hole chain hangs down and contacts the soil surface, the heat-conducting hole chain is located in the flame spraying zone below and behind the flame spraying device, and the distance between the front end of the heat-conducting hole chain and the counter-rotating rotary tillage device is greater than the length of the heat-conducting hole chain; When the machine is operating, the flame spraying device sprays flames toward the flame spraying area at the rear and lower part, and the counter-rotating rotary tillage device throws soil backward. The soil moves backward into the flame spraying area for a first throwing flame inactivation, and the flame is sprayed toward the rear and lower part through the soil, performing a secondary surface flame inactivation on the rear and lower soil surface. At the same time, the heat-conducting hole chain is heated. The heated heat-conducting hole chain is dragged along with the forward movement of the machine, disturbing and cutting into the soil surface, and performing a third contact high-temperature inactivation on the contacted soil. During the inactivation process, the high-temperature heat accumulated in the inactivation and insecticide cover forms a high-temperature inactivation environment, and the surface soil is subjected to a fourth surface high-temperature inactivation. The liquefied gas supply system includes a heat exchange cooling device and a plurality of liquefied gas tanks installed in the heat exchange cooling device, the gas outlet ends of the plurality of liquefied gas tanks are connected to the flame jet device to supply gas to the flame jet device, and the heat exchange cooling device is horizontally arranged to correspond to the width of the heat blocking plate; the heat exchange cooling device includes a heat exchange tank, which is loaded with heat exchange cooling water, the top of the heat exchange tank is provided with a liquefied tank opening, the bottom end of the liquefied tank is placed in the interior of the heat exchange tank through the liquefied tank opening, and the bottom 1 / 3 of the liquefied tank 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 tank through the heat blocking plate and is absorbed by the heat exchange cooling water, thereby reducing the heat transferred to the surface of the liquefied tank. When the plurality of liquefied tanks are released and vaporized at the same time, the heat of the heat exchange cooling water is absorbed to achieve the purpose of heating.

2. The high-temperature chain contact heat exchange and air supply flame extinguishing equipment according to claim 1, characterized in that: The mounting plate swing arm includes a horizontal swing arm, the front end of the horizontal swing arm is hinged on the inactivation and insecticide cover, the rear end of the horizontal swing arm is connected to the vertical swing arm, the hole chain mounting plate is connected to the bottom end of the vertical swing arm, and a limit stop column is provided at the corner of the horizontal swing arm and the vertical swing arm, and the limit stop column is fixed on the inactivation and insecticide cover to support the mounting plate swing arm at the upper limit.

3. The high-temperature chain contact heat exchange and air supply flame extinguishing equipment according to claim 1, characterized in that: The hole chain mounting plate is an L-shaped mounting plate, the vertical plate of the L-shaped mounting plate is tilted backward and the bottom plate is tilted downward, both of which serve as the soil-facing surface. A number of chain partitions are arranged at intervals on the surface of the L-shaped mounting plate. The heat-conducting hole chain is a large-hole iron chain with a smooth surface. A large-hole iron chain is arranged between two connected chain partitions. A long pin shaft is connected between the left and right mounting plate swing arms. Each of the large-hole iron chains is respectively mounted outside the long pin shaft, and the long pin shaft passes through each of the chain partitions.

4. The high-temperature chain contact heat exchange and air supply flame extinguishing equipment according to claim 1, characterized in that: The flame spraying device includes a gas supply pipeline connected to the gas outlet end of the liquefied gas supply system, a plurality of gas supply branches are sequentially connected to the gas supply pipeline, the gas outlet end of each gas supply branch is connected to a flame nozzle, and the plurality of flame nozzles are sequentially arranged along the width direction of the heat blocking plate.

5. The high-temperature chain contact heat exchange and air supply flame extinguishing equipment according to claim 4, characterized in that: The multiple liquefied gas tanks are arranged in sequence along the width direction of the heat exchange cooling device, and the gas outlets of the multiple liquefied gas tanks are respectively connected to gas outlet branches, and the multiple 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.

6. The high-temperature chain contact heat exchange and air supply flame extinguishing 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.

7. The high-temperature chain contact heat exchange and air supply flame extinguishing equipment according to claim 6, 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.

8. The high-temperature chain contact heat exchange and air supply flame extinguishing 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 insecticide cover are all made of metal, and a heat-insulating layer is laid on the outer surface of the inactivation and insecticide cover.

9. The high-temperature chain contact heat exchange and air supply flame extinguishing 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 insecticidal cover and contacts the inactivation and insecticidal cover.

Images