Hot air circulation sterilization equipment with double-air-chamber structure

Abstract

The invention discloses hot air circulation sterilization equipment with a double-air-chamber structure, and relates to the field of sterilization equipment, the hot air circulation sterilization equipment comprises a sterilization box, a ventilation conveying mechanism is mounted in the sterilization box, a baffle is fixed in the middle of the sterilization box, a lower air blowing chamber and an upper air blowing chamber which are different in air blowing direction are arranged on the two sides of the baffle respectively, and the hot air circulation sterilization equipment further comprises a first circulation fan; the air inlet end of the first circulating fan is connected with the bottom end of one side face of the lower air blowing chamber and the top end of the upper air blowing chamber through connecting assemblies, and the air outlet end of the first circulating fan is connected with the top end of the other side face of the lower air blowing chamber and the bottom end of the side face of the upper air blowing chamber through connecting assemblies. And second circulating fans for circulating air in the air chambers are mounted in the lower air blowing chamber and the upper air blowing chamber. When passing through the sterilization box, crops are sequentially sterilized by hot air flows in two different directions, so that air is circulated to maintain the temperature and humidity in the sterilization box, and a good sterilization effect on the crops is continuously maintained.

Description

Technical Field

[0001] The invention relates to the field of sterilization equipment, in particular to hot air circulation sterilization equipment with a double air chamber structure. Background Art

[0002] The re-drying sterilizer uses high-humidity hot air for sterilization. High-humidity hot air sterilization can ensure that the moisture content of the material does not decrease. It is often used to sterilize crops such as stem vegetables or fruits with high water content.

[0003] The re-drying sterilizer in the prior art is mainly composed of a sterilizer body, an external heating system, a humidification system, and a return air filtration system. The hot air temperature used in the sterilization chamber is generally between 85 and 95 degrees Celsius, which is just enough to ensure a good sterilization effect. The humidity of the hot air for sterilization is notified by the humidity control steam humidification system. The relative humidity of the hot air in the sterilization chamber is between 40 and 50%, thereby ensuring that the relative humidity of the high-humidity hot air does not exceed the saturated humidity after passing through the material for cooling, thereby generating condensed water.

[0004] With respect to the above-mentioned related technologies, the hot air circulating in the hot air circulation sterilization equipment in the prior art is often blown toward the crops on the conveyor chain in a single direction. The crops are prone to uneven heating during the movement on the conveyor chain, thereby affecting the sterilization effect of the crops. In addition, during the hot air circulation process, the existing hot air circulation equipment generally needs to use heating equipment and humidification equipment to heat and humidify the hot air respectively. Installing two sets of equipment can easily lead to a longer hot air circulation path, affecting the hot air circulation efficiency. At the same time, it is also easy to increase the use and maintenance costs of the hot air circulation sterilization equipment. In summary, the sterilization effect of the existing hot air circulation equipment on crops needs to be improved. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide a hot air circulation sterilization device with a double air chamber structure to solve the technical problem that the existing hot air circulation equipment has a poor sterilization effect on crops.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a hot air circulation sterilization equipment with a double air chamber structure, comprising a sterilization box, a conveying mechanism capable of ventilation is installed in the sterilization box, and a baffle is fixed in the middle, the two sides of the baffle are respectively a lower blowing chamber and an upper blowing chamber with different blowing directions, and also comprises a first circulation fan, the air inlet end of the first circulation fan is respectively connected to the bottom end of one side of the lower blowing chamber and the top end of the upper blowing chamber through a connecting component, and the air outlet end is respectively connected to the top end of the other side of the lower blowing chamber and the bottom end of the side of the upper blowing chamber through a connecting component, the connecting component of the first circulation fan is connected in series with a filtering component and an adjusting component, and also comprises a second circulation fan, and the lower blowing chamber and the upper blowing chamber are both equipped with a second circulation fan for circulating the air inside the air chamber.

[0007] By adopting the above technical solution, crops are sterilized in turn by hot air flows in two different directions while passing through the sterilization box. While the air in the upper blowing chamber and the lower blowing chamber is self-circulating, a part of the air leaves the sterilization box and is transported to the filter component and the adjustment component through the air duct, and finally returns to the sterilization box. This cycle is used to maintain the temperature and humidity in the sterilization box, thereby continuously maintaining a good sterilization effect on the crops.

[0008] The present invention is further configured such that a conveyor chain is installed in the sterilization box, the lower blowing chamber and the upper blowing chamber are arranged in sequence along the conveying direction of the conveyor chain, and the baffle plate is provided with a through opening for the conveyor chain and the material conveyed by the conveyor chain to pass through.

[0009] Preferably, the crops to be sterilized by hot air are transported into the sterilization box by means of a conveyor chain, and sterilization is performed during the transportation process.

[0010] The present invention is further configured such that a mounting bracket is fixed in the upper blowing chamber along the width direction of the conveying chain, a plurality of mounting brackets are arranged at intervals along the conveying direction of the conveying chain, the mounting brackets are rotatably connected with baffles at intervals along their own length direction, the baffles can be rotated by the material on the conveying chain, and the baffles do not contact the conveying chain.

[0011] Preferably, when the crops on the conveyor chain move relative to the baffle bar, the baffle bar can be pushed and rotated while causing the crops to slightly shift on the conveyor chain, thereby preventing the crops that are always in contact with the conveyor chain from being blown by the upward airflow due to uneven mesh of the conveyor chain, thereby further improving the quality of crop sterilization.

[0012] The present invention is further configured such that one side of the lower blowing chamber is connected to a first air outlet below the plane of the conveying chain, and the other side is connected to a first air inlet above the plane of the conveying chain; the upper blowing chamber is connected to a second air outlet above the conveying chain, and is connected to a second air inlet below the plane of the conveying chain; the second air inlet and the first air inlet are installed on the same side of the sterilization box.

[0013] Preferably, both the lower blowing chamber and the upper blowing chamber circulate air through corresponding air duct structures.

[0014] The present invention is further configured such that a filter box is installed on the top of the sterilization box, and a regulating box is installed at one end, the air inlet end of the first circulation fan is connected to the air outlet end of the filter box, and the air outlet end is connected to the air inlet end of the regulating box, the air inlet end of the filter box, the first air outlet duct, and the second air outlet duct are connected through a first connecting air duct, and the air outlet end of the regulating box, the first air inlet duct, and the second air inlet duct are connected through a second connecting air duct.

[0015] Preferably, the air in the sterilization box is filtered, heated, and humidified after leaving the sterilization box and then returns to the sterilization box.

[0016] The present invention is further configured such that the sterilization box is provided with a baffle between the second circulation fan and the conveying chain, and a circulation air inlet and a circulation air outlet are provided on the baffle, the circulation air inlet of the lower blowing chamber is arranged above the plane of the conveying chain, and the circulation air outlet is arranged below the plane of the conveying chain, the circulation air inlet of the upper blowing chamber is arranged below the plane of the conveying chain, and the circulation air outlet is arranged above the plane of the conveying chain.

[0017] Preferably, the circulating air inlet and the circulating air outlet on the baffle cooperate with the second circulating fan to realize air circulation inside the corresponding air chamber.

[0018] The present invention is further configured such that a mounting plate for installing a second circulation fan is fixedly connected inside the sterilization box, and the mounting plate is located between the circulation air inlet and the circulation air outlet, and the air outlet end of the second circulation fan passes through the mounting plate, and the air outlet end of the second circulation fan corresponding to the lower blowing chamber is arranged upward, and the air flow generated can intersect with the air flow flowing out of the first air inlet duct, and the air outlet end of the second circulation fan corresponding to the upper blowing chamber is arranged downward, and the air flow generated can intersect with the air flow flowing out of the second air inlet duct.

[0019] Preferably, the airflow after entering the corresponding air chamber merges with the airflow circulating in the air chamber and then blows toward the crops on the conveying chain.

[0020] The present invention is further configured as follows: a humidifying tube is connected to the top of the regulating box, and the humidifying tube is connected to a plurality of shunt tubes at intervals along the length direction inside the regulating box, and the shunt tube is fixedly connected to a connecting frame at intervals along its own length direction, and the connecting frame is rotatably connected to a heating tube, and two insertion ports are provided at the top of the heating tube, and a pressure plate is fixedly connected to the middle positions corresponding to each other at the insertion ports, and a nozzle tube is connected below the shunt tube, and the nozzle tube passes through the insertion port, and a pressure rod is connected at the outlet, and the nozzle tube can be opened when the pressure rod is pressed, otherwise the nozzle tube is in a closed state.

[0021] Preferably, when the pressure rod is pressed down, the nozzle tube can spray steam to humidify the air flowing through.

[0022] The present invention is further configured such that when the heating tube is in a vertical state, the pressure rod and the pressure plate are in contact with each other but are not pressed, the bottom end of the heating tube is rotatably connected to an impeller, and one end of the impeller is fixedly connected to a counterweight block.

[0023] Preferably, the impeller will rotate under the action of airflow. Since a counterweight is installed on the impeller, the impeller will swing around the rotating shaft between itself and the connecting frame. During the swinging process, the nozzle pipes on both sides can be opened alternately.

[0024] The present invention is further configured such that the inner diameter of the insertion port is larger than the diameter of the nozzle tube, the height of the rotating shaft of the heating tube is lower than the pressure rod, and the projections of the axis of the rotating shaft and the axis of the pressure rod to the ground are orthogonal to each other.

[0025] Preferably, the nozzle tube is prevented from interfering with the normal swinging motion of the insertion port.

[0026] In summary, the present invention mainly has the following beneficial effects: 1. The present invention arranges an upper blowing chamber and a lower blowing chamber in the sterilization box along the conveying direction of the conveyor chain. The crops are sterilized in turn by hot air flows in two different directions during the process of passing through the sterilization box. While the air in the upper blowing chamber and the lower blowing chamber is self-circulating, a part of the air leaves the sterilization box and is conveyed to the filter component and the regulating component through the air duct, and finally returns to the sterilization box. This cycle is used to maintain the temperature and humidity in the sterilization box, thereby continuously maintaining a good sterilization effect on the crops.

[0027] 2. The present invention integrates heating and humidifying equipment for circulating air. When the air passes through the regulating box, it exchanges heat with the heating tube and heats up. At the same time, the heating tube swings back and forth under the action of the airflow, releasing humidifying steam at a fixed frequency. The circulating fan controls the flow rate of the gas entering the regulating box, and adjusts the temperature of the heating tube to adjust the temperature and humidity of the air flowing through it, effectively shortening the length of the original air circulation path, avoiding the formation of condensed water in the air duct of the circulating air, and thereby improving the quality of the equipment for sterilizing crops.

[0028] 3. The present invention arranges a blocking structure rotatably above the conveying chain of the upward blowing sterilization chamber. The blocking structure will push the crops to produce a slight displacement during the transportation of the crops, thereby changing the position where the crops contact the conveying chain, reducing the probability of the crops being in an airtight position of the conveying chain, and allowing the upward airflow to better sterilize the crops, further improving the quality of the equipment for sterilizing crops.

[0029] 4. The present invention connects a heating tube to a regulating box through rotation, and connects an impeller to the bottom end of the heating tube through a coaxial rotation, and connects a configuration block to the impeller. The impeller is driven to rotate by the airflow passing through the regulating box, so that the heating tube is reciprocated along its own rotating axis to press the spray rod. Steam is sprayed at a fixed frequency under the condition of a constant gas flow rate, and the air flowing through the regulating box is heated and humidified at the same time, thereby optimizing the installation space of the original air heating and humidification equipment and reducing the cost of air heating and humidification. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A perspective view of the present invention; Figure 2Another perspective perspective diagram of the present invention; Figure 3 A three-dimensional diagram of the internal structure of the sterilization box of the present invention; Figure 4 A three-dimensional diagram of the internal structure of the sterilization box from another perspective of the present invention; Figure 5 For the present invention Figure 4 A magnified view of middle; Figure 6 It is a three-dimensional diagram of the internal structure of the down-blowing air chamber of the present invention; Figure 7 It is a three-dimensional diagram of the internal structure of the upper blowing chamber of the present invention; Figure 8 It is a three-dimensional diagram of the regulating box of the present invention; Fig. 9 This is a schematic diagram of the state where the heating pipe of the present invention is connected to the shunt pipe; Fig.10 For the present invention Fig. 9 Enlarged view of middle B; Fig.11 For the present invention Fig. 9 Enlarged view of C in the middle.

[0031] Description of reference numerals: 1. Sterilization box; 101. Circulation air inlet; 102. Circulation air outlet; 103. Baffle; 104. Mounting plate; 2. Lower blowing chamber; 201. First air outlet; 202. First air inlet; 3. Upper blowing chamber; 301. Second air outlet; 302. Second air inlet; 4. Conveyor chain; 5. First joint ventilation duct; 6. Filter box; 7. First circulation fan; 8. Adjustment box; 9. Two-way ventilation duct; 10. baffle plate; 11. wind uniforming plate; 12. mounting frame; 1201. baffle bar; 13. second circulation fan; 14. wind guide plate; 15. humidifying tube; 16. diverter tube; 1601. nozzle tube; 1602. pressure rod; 17. connecting frame; 18. heating tube; 1801. insertion port; 1802. pressure plate; 1803. through hole; 19. impeller; 20. counterweight. DETAILED DESCRIPTION

[0032] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] The following describes an embodiment of the present invention based on its overall structure.

[0034] First embodiment: A hot air circulation sterilization equipment with double air chamber structure, please refer to Figure 1-11, including a sterilization box 1, in which a conveying mechanism capable of ventilation is installed, and a baffle plate 10 is fixed in the middle, and a side wall of the sterilization box 1 is also provided with an observation window for conveniently observing the internal situation of the sterilization box 1. Specifically, the baffle plate 10 is used to separate the airflow between the lower blowing chamber 2 and the upper blowing chamber 3 to reduce the mutual crosstalk of the airflow between the two air chambers, and the two sides of the baffle plate 10 are respectively the lower blowing chamber 2 and the upper blowing chamber 3 with different blowing directions.

[0035] It also includes a first circulation fan 7, the air inlet end of the first circulation fan 7 is respectively connected to the bottom end of one of the side surfaces of the lower blowing chamber 2 and the top end of the upper blowing chamber 3 through a connecting component, while the air outlet end is respectively connected to the top end of the other side surface of the lower blowing chamber 2 and the bottom end of the side surface of the upper blowing chamber 3 through a connecting component. The connecting component of the first circulation fan 7 is connected in series with a filtering component and an adjusting component. Specifically, the first circulation fan 7 is used for circulating the airflow that leaves the sterilization box 1 in the lower blowing chamber 2 and the upper blowing chamber 3, so that this part of the airflow returns to the sterilization box 1 after filtering, heating and humidification.

[0036] It also includes a second circulation fan 13. The lower air chamber 2 and the upper air chamber 3 are both equipped with the second circulation fan 13 for circulating the air inside the air chamber. The second circulation fan 13 allows the air in the lower air chamber 2 and the upper air chamber 3 to circulate through the circulation air outlet 102 and the circulation air inlet 101. The circulating airflow will be mixed with the airflow flowing back into the sterilization box 1 and participate in the subsequent circulation flow.

[0037] In the above embodiments, please refer to Figure 3-5 A conveyor chain 4 is installed in the sterilization box 1. The conveyor chain 4 has a gap that allows air to pass through, which ensures the conveying capacity while maintaining a good ventilation effect. The lower blowing chamber 2 and the upper blowing chamber 3 are arranged in sequence along the conveying direction of the conveyor chain 4. The baffle plate 10 is provided with a passage for the conveyor chain 4 and the materials conveyed on the conveyor chain 4 to pass through. The conveyor chain 4 is used to transport the crops that need to be sterilized by hot air into the sterilization box 1, and sterilization is achieved during the transportation process.

[0038] Specifically, the lower air chamber 2 is provided with an air uniforming plate 11 above the conveying chain 4 in the lower air chamber 2, and the upper air chamber 3 is provided with an air uniforming plate 11 below the conveying chain 4 in the upper air chamber 3. The airflow flowing toward the conveying chain 4 can sterilize the crops on the conveying chain 4 more evenly after passing through the air uniforming plate 11.

[0039] Furthermore, a mounting frame 12 is fixed in the upper blowing chamber 3 along the width direction of the conveyor chain 4, and a plurality of mounting frames 12 are arranged at intervals along the conveying direction of the conveyor chain 4. The mounting frames 12 are rotatably connected to baffle bars 1201 at intervals along their own length direction. The baffle bars 1201 can rotate due to the push of materials on the conveyor chain 4, and the baffle bars 1201 do not contact the conveyor chain 4. When the crops on the conveyor chain 4 move relative to the baffle bars 1201, the baffle bars 1201 can be pushed and rotated while causing slight displacement of the crops on the conveyor chain 4, thereby preventing the crops that are always in contact with the conveyor chain 4 from being blown by the upward airflow due to the uneven mesh of the conveyor chain 4, thereby further improving the quality of crop sterilization.

[0040] Furthermore, the different baffles 1201 on the multiple mounting frames 12 do not overlap with each other along the conveying direction of the conveyor chain 4, which can further increase the probability of the baffles 1201 contacting the crops on the conveyor chain 4, thereby better pushing the crops on the conveyor chain 4 and changing the position where the crops contact the conveyor chain 4, so as to achieve a better sterilization effect.

[0041] See also Figure 6-7 The sterilization box 1 is provided with a baffle 103 between the second circulation fan 13 and the conveying chain 4, and a circulation air inlet 101 and a circulation air outlet 102 are provided on the baffle 103. The circulation air inlet 101 of the lower blowing chamber 2 is arranged above the plane of the conveying chain 4, and the circulation air outlet 102 is arranged below the plane of the conveying chain 4. The circulation air inlet 101 of the upper blowing chamber 3 is arranged below the plane of the conveying chain 4, and the circulation air outlet 102 is arranged above the plane of the conveying chain 4. The circulation air inlet 101 and the circulation air outlet 102 on the baffle 103 cooperate with the second circulation fan 13 to realize the air circulation inside the corresponding air chamber.

[0042] Specifically, after the air in the lower blowing chamber 2 is blown downward toward the crops, a part of it will leave from the first air outlet 201, while the other part will pass through the circulating air outlet 102 and reach the position of the air inlet of the second circulating fan 13. The second circulating fan 13 works to blow the air upward, and the air leaving the second circulating fan 13 is mixed with the air entering the sterilization box 1 through the first air inlet 202, and then passes through the circulating air inlet 101 and is blown toward the conveyor chain 4, and the cycle is repeated. After the air in the upper blowing chamber 3 is blown upward toward the crops, a part of it will leave from the second air outlet 301, while the other part will pass through the circulating air outlet 102 and reach the position of the air inlet of the second circulating fan 13. The second circulating fan 13 works to blow the air downward, and the air leaving the second circulating fan 13 is mixed with the air entering the sterilization box 1 through the second air inlet 302, and then passes through the circulating air inlet 101 and is blown toward the conveyor chain 4, and the cycle is repeated.

[0043] In the above embodiments, please refer to Figure 6-7A mounting plate 104 for mounting the second circulation fan 13 is fixedly connected inside the sterilization box 1, and the mounting plate 104 is located between the circulation air inlet 101 and the circulation air outlet 102. The air outlet end of the second circulation fan 13 passes through the mounting plate 104, and the air outlet end of the second circulation fan 13 corresponding to the lower blowing chamber 2 is arranged upward, and the airflow generated can intersect with the airflow flowing out of the first air inlet duct 202. The air outlet end of the second circulation fan 13 corresponding to the upper blowing chamber 3 is arranged downward, and the airflow generated can intersect with the airflow flowing out of the second air inlet duct 302. The airflow after entering the corresponding air chamber merges with the airflow circulating in the air chamber and then blows toward the crops on the conveyor chain 4.

[0044] Specifically, the mounting plate 104 can separate the air inlet and outlet of the second circulation fan 13 when it is working, thereby improving the working efficiency of the second circulation fan 13 and allowing the air returning to the sterilization box 1 to be better mixed with the air flowing out of the circulation outlet 102 .

[0045] In the above embodiments, please refer to Figure 1-7 One side of the lower blowing chamber 2 is connected to the first air outlet 201 below the plane of the conveyor chain 4, and the other side is connected to the first air inlet 202 above the plane of the conveyor chain 4. The upper blowing chamber 3 is connected to the second air outlet 301 above the conveyor chain 4, and is connected to the second air inlet 302 below the plane of the conveyor chain 4. The second air inlet 302 and the first air inlet 202 are installed on the same side of the sterilization box 1, and the lower blowing chamber 2 and the upper blowing chamber 3 both circulate air through corresponding air duct structures.

[0046] Furthermore, a filter box 6 is installed on the top of the sterilization box 1, and a regulating box 8 is installed at one end. The air inlet end of the first circulation fan 7 is connected to the air outlet end of the filter box 6, and the air outlet end is connected to the air inlet end of the regulating box 8. The air inlet end of the filter box 6, the first air outlet 201, and the second air outlet 301 are connected through the first joint ventilation duct 5, and the air outlet end of the regulating box 8, the first air inlet duct 202, and the second air inlet duct 302 are connected through the second joint ventilation duct 9. After leaving the sterilization box 1, the air in the sterilization box 1 is filtered, heated, and humidified before returning to the sterilization box 1.

[0047] Specifically, the air leaving the down-blowing chamber 2 from the first air outlet 201 enters the first joint ventilation duct 5 and then passes through the filter box 6 to filter and remove impurities such as particles or water droplets in the air, passes through the first circulation fan 7 to enter the adjustment box 8 to adjust the temperature and humidity, and then enters the second joint ventilation duct 9, and finally returns to the sterilization box 1 through the first air inlet 202. The air returned to the sterilization box 1 is mixed with the air in the down-blowing chamber 2 that is originally in a circulating state, passes through the circulation air inlet 101, and then blows to the conveyor chain 4, and Correspondingly, the air leaving the upper blowing chamber 3 from the second air outlet 301 enters the first joint ventilation duct 5 and then passes through the filter box 6 to filter and remove impurities such as particles or water droplets in the air, then passes through the first circulation fan 7 to enter the adjustment box 8 to adjust the temperature and humidity, and then enters the second joint ventilation duct 9, and finally returns to the sterilization box 1 through the second air inlet 302. The air returning to the sterilization box 1 is mixed with the air that was originally in a circulating state in the upper blowing chamber 3, passes through the circulation air inlet 101, and is blown to the conveying chain 4.

[0048] Furthermore, in order to prevent the airflow returning to the sterilization box 1 from directly passing through the circulating air inlet 101, the sterilization box 1 is fixedly provided with air guide plates 14 at the first air inlet 202 and the second air inlet 302. The air guide plates 14 can guide the airflow entering the sterilization box 1 to the inner wall of the sterilization box 1, so that the outlet airflow of the second circulating fan 13 is mixed with the airflow entering the sterilization box 1 and then passes through the circulating air inlet 101 and enters the corresponding air chamber.

[0049] Second embodiment: A hot air circulation sterilization equipment with double air chamber structure, please refer to Figure 1-2 ,、 Figure 8-11 A humidifying tube 15 is connected to the top of the regulating box 8. Specifically, one end of the humidifying tube 15 passes through the regulating box 8 and is connected to the steam generating device. The humidifying tube 15 is connected to a plurality of shunt tubes 16 at intervals along the length direction in the regulating box 8. The shunt tubes 16 are fixedly connected to connecting frames 17 at intervals along their own length direction. The connecting frame 17 is rotatably connected to a heating tube 18. Two insertion ports 1801 are provided at the top of the heating tube 18, and a pressing plate 1802 is fixedly connected to the middle position of the insertion ports 1801 corresponding to each other.

[0050] Specifically, the insertion port 1801 is arranged along the radial direction of the heating tube 18, and a nozzle tube 1601 is connected to the lower part of the shunt tube 16, and the nozzle tube 1601 penetrates the insertion port 1801, and is connected to a pressure rod 1602 at the outlet. The pressure rod 1602 can open the nozzle tube 1601 when it is pressed, otherwise the nozzle tube 1601 is in a closed state. Specifically, the pressure rod 1602 is connected to a press valve located at the outlet of the nozzle tube 1601, and its specific principle is similar to the press valve of the atomizing spray bottle in the prior art. The pressure valve will not be elaborated here. When the pressure rod 1602 is pressed down, the nozzle tube 1601 can spray steam to humidify the air passing through. When the heating tube 18 is tilted, the pressure plate 1802 will press down the pressure rod 1602 on one side, so that the steam sprayed from the nozzle tube 1601 enters the heating tube 18, and a part of it is sprayed out from the top of the heating tube 18, and the other part is sprayed out through the through holes 1803 arranged at intervals along the axial direction of the heating tube 18, so as to humidify the air passing through the regulating box 8.

[0051] Furthermore, a heating resistor wire is arranged inside the tank wall of the heating tube 18. The heating tube 18 will generate heat when powered on. The air passing through the regulating box 8 can be heated by exchanging heat with the heating tube 18.

[0052] In the above embodiments, please refer to Figure 8-11 When the heating tube 18 is in a vertical state, the pressure rod 1602 and the pressure plate 1802 are in contact with each other but are not pressed. The bottom end of the heating tube 18 is rotatably connected to the impeller 19, and one end of the impeller 19 is fixedly connected to the counterweight block 20. The impeller 19 will rotate under the action of the airflow. Since the counterweight block 20 is installed on the impeller 19, the impeller 19 will swing around the rotating shaft between itself and the connecting frame 17. Specifically, when the heating tube 18 swings back and forth, the pressure plate 1802 will alternately press down the pressure rods 1602 on both sides, and then alternately open the nozzle tubes 1601 on both sides during the swinging process.

[0053] Furthermore, the inner diameter of the insertion port 1801 is larger than the diameter of the nozzle tube 1601 to prevent the nozzle tube 1601 from interfering with the normal swing of the insertion port 1801. The height of the rotating shaft of the heating tube 18 is lower than the pressure rod 1602, and the axis of the rotating shaft and the projection of the axis of the pressure rod 1602 to the ground are orthogonal to each other. When the impeller 19 rotates, the heating tube 18 is restricted by its own rotating shaft and is in a regular swinging state. The heating tube 18 in the swinging state can alternately press down the pressure rod 1602, thereby allowing the steam to be evenly ejected. The steam discharge amount can be conveniently adjusted by controlling parameters such as the steam pressure and the power of the first circulation fan.

[0054] When the sterilization box is sterilizing, the stem vegetables or fruits and other crops are sent into the sterilization box 1 by the conveyor chain 4, and then pass through the downward blowing chamber 2 and the upward blowing chamber 3, and are continuously blown by hot air with a temperature between 85-95 degrees Celsius and a relative humidity between 40-50% to achieve a good sterilization effect. The specific air flow direction in the sterilization box 1 is as follows: In the down-blowing chamber 2, the second circulation fan 13 works to circulate the air in the down-blowing chamber 2, so that the air is blown toward the crops on the conveyor chain 4 in the direction toward the top surface of the conveyor chain 4, and the crops are sterilized at high temperature. Part of the air in the down-blowing chamber 2 will also flow out from the first air outlet 201, and after being filtered, heated, and humidified in the air duct outside the sterilization box 1, it returns to the sterilization box 1 from the first air inlet 202. The air returned to the sterilization box 1 is mixed with the airflow blown out from the air outlet of the second circulation fan 13, and then participates in the air circulation of the down-blowing chamber 2 again; In the upper blowing chamber 3, the second circulation fan 13 works to circulate the air in the upper blowing chamber 3, so that the air is blown toward the crops on the conveyor chain 4 in the direction toward the bottom surface of the conveyor chain 4, and the crops are sterilized at high temperature. Part of the air in the upper blowing chamber 3 will also flow out from the second air outlet 301, and after being filtered, heated and humidified in the air duct outside the sterilization box 1, it returns to the sterilization box 1 from the second air inlet 302. The air returning to the sterilization box 1 is mixed with the airflow blown out by the air outlet of the second circulation fan 13, and then participates in the air circulation of the upper blowing chamber 3, so that sufficient high-temperature sterilization of agricultural products can be achieved through reciprocating.

[0055] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A hot air circulation sterilization equipment with a double air chamber structure, characterized in that: include: A sterilization box (1), wherein a conveying mechanism capable of ventilation is installed in the sterilization box (1), and a baffle plate (10) is fixed in the middle, and the baffle plate (10) is provided on both sides with a lower blowing chamber (2) and an upper blowing chamber (3) having different blowing directions; A first circulation fan (7), wherein the air inlet end of the first circulation fan (7) is respectively connected to the bottom end of one side of the lower blowing chamber (2) and the top end of the upper blowing chamber (3) through a connecting assembly, and the air outlet end is respectively connected to the top end of the other side of the lower blowing chamber (2) and the bottom end of the side of the upper blowing chamber (3) through a connecting assembly, and the connecting assembly of the first circulation fan (7) is connected in series with a filtering assembly and a regulating assembly; A second circulation fan (13), wherein the lower blowing chamber (2) and the upper blowing chamber (3) are both equipped with a second circulation fan (13) for circulating the air inside the chamber.

2. The hot air circulation sterilization equipment with a double air chamber structure according to claim 1 is characterized in that: A conveyor chain (4) is installed in the sterilization box (1), the lower blowing chamber (2) and the upper blowing chamber (3) are arranged in sequence along the conveying direction of the conveyor chain (4), and the blocking plate (10) is provided with a through opening for the conveyor chain (4) and the material conveyed by the conveyor chain (4) to pass through.

3. The hot air circulation sterilization equipment with a double air chamber structure according to claim 2 is characterized in that: A mounting frame (12) is fixed in the upper blowing chamber (3) along the width direction of the conveying chain (4); a plurality of mounting frames (12) are arranged at intervals along the conveying direction of the conveying chain (4); the mounting frames (12) are rotatably connected to baffle bars (1201) at intervals along their length direction; the baffle bars (1201) can be rotated by the material on the conveying chain (4); and the baffle bars (1201) do not contact the conveying chain (4).

4. The hot air circulation sterilization equipment with a double air chamber structure according to claim 2 is characterized in that: One side of the lower blowing chamber (2) is connected to a first air outlet duct (201) below the plane of the conveyor chain (4), and the other side is connected to a first air inlet duct (202) above the plane of the conveyor chain (4); the upper blowing chamber (3) is connected to a second air outlet duct (301) above the conveyor chain (4), and is connected to a second air inlet duct (302) below the plane of the conveyor chain (4); the second air inlet duct (302) and the first air inlet duct (202) are installed on the same side of the sterilization box (1).

5. The hot air circulation sterilization equipment with a double air chamber structure according to claim 4 is characterized in that: A filter box (6) is installed on the top of the sterilization box (1), and a regulating box (8) is installed at one end; the air inlet end of the first circulation fan (7) is connected to the air outlet end of the filter box (6), and the air outlet end is connected to the air inlet end of the regulating box (8); the air inlet end of the filter box (6), the first air outlet duct (201), and the second air outlet duct (301) are connected via a first cascade duct (5); the air outlet end of the regulating box (8), the first air inlet duct (202), and the second air inlet duct (303) are connected via a second cascade duct (9).

6. The hot air circulation sterilization equipment with a double air chamber structure according to claim 4 is characterized in that: The sterilization box (1) is provided with a baffle (103) between the second circulation fan (13) and the conveying chain (4), and a circulation air inlet (101) and a circulation air outlet (102) are provided on the baffle (103); the circulation air inlet (101) of the lower blowing chamber (2) is arranged above the plane of the conveying chain (4), while the circulation air outlet (102) is arranged below the plane of the conveying chain (4); the circulation air inlet (101) of the upper blowing chamber (3) is arranged below the plane of the conveying chain (4), while the circulation air outlet (102) is arranged above the plane of the conveying chain (4).

7. The hot air circulation sterilization equipment with a double air chamber structure according to claim 6 is characterized in that: A mounting plate (104) for mounting a second circulation fan (13) is fixedly connected inside the sterilization box (1), and the mounting plate (104) is located between the circulation air inlet (101) and the circulation air outlet (102). The air outlet end of the second circulation fan (13) passes through the mounting plate (104). The air outlet end of the second circulation fan (13) corresponding to the lower air blowing chamber (2) is arranged upward, and the air flow generated can intersect with the air flow flowing out of the first air inlet duct (202). The air outlet end of the second circulation fan (13) corresponding to the upper air blowing chamber (3) is arranged downward, and the air flow generated can intersect with the air flow flowing out of the second air inlet duct (302).

8. The hot air circulation sterilization equipment with a double air chamber structure according to claim 5, characterized in that: A humidifying tube (15) is connected to the top of the regulating box (8); the humidifying tube (15) is connected to a plurality of shunt tubes (16) at intervals along the length direction inside the regulating box (8); the shunt tube (16) is fixedly connected to a connecting frame (17) at intervals along its length direction; the connecting frame (17) is rotatably connected to a heating tube (18); two insertion ports (1801) are provided at the top of the heating tube (18); and a pressure plate (1802) is fixedly connected to the middle positions of the insertion ports (1801) corresponding to each other; a nozzle tube (1601) is connected below the shunt tube (16); the nozzle tube (1601) is inserted into the insertion port (1801) and is connected to a pressure rod (1602) at the outlet; the nozzle tube (1601) can be opened when the pressure rod (1602) is pressed; otherwise, the nozzle tube (1601) is in a closed state.

9. The hot air circulation sterilization equipment with a double air chamber structure according to claim 8, characterized in that: When the heating tube (18) is in a vertical state, the pressure rod (1602) and the pressure plate (1802) are in contact with each other but are not under pressure, the bottom end of the heating tube (18) is rotatably connected to an impeller (19), and one end of the impeller (19) is fixedly connected to a counterweight (20).

10. The hot air circulation sterilization equipment with a double air chamber structure according to claim 8, characterized in that: The inner diameter of the insertion port (1801) is greater than the diameter of the nozzle tube (1601), the height of the rotating shaft of the heating tube (18) is lower than the pressure rod (1602), and the axis of the rotating shaft and the projection of the axis of the pressure rod (1602) onto the ground are orthogonal to each other.

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