Onion juice extraction deodorization sterilization and pesticide residue removal equipment and process

Abstract

The present application relates to the technical field of onion juice preparation, and discloses an onion juice extraction, deodorization, sterilization and pesticide residue removal device and process, which comprises a base and an electric liquid inlet valve, the stirring mechanism comprises a support plate, the upper end surface of the support plate is fixed with a limiting ring, a rotating seat is rotatably connected in the limiting ring, a filter cartridge is fixed to the top of the rotating seat, a rotating column is rotatably connected in the filter cartridge, and a stirring rod is fixed to the outside of the rotating column. The onion juice extraction, deodorization, sterilization and pesticide residue removal device can rotate by 180 degrees, facilitating the rotation of the two filter cartridges, the two filter cartridges can be lifted as a whole, the ultrasonic cleaning box is used to store clean water, the feeding operation is completed, and the filter cartridge is lowered into the clean water, the support plate continues to move downward after the support box is placed on the base plate, the block is finally clamped into the sleeve, then the sleeve rotates to drive the block, the rotating column and the stirring rod to rotate, and the onion is automatically stirred, so that the cleaning effect is more comprehensive and efficient.

Description

Technical Field

[0001] This invention relates to the technical field of onion juice preparation, specifically to an onion juice extraction, deodorization, sterilization, and pesticide residue removal equipment and process. Background Technology

[0002] Existing deodorizing and sterilizing equipment generally uses soaking for cleaning. During the cleaning process, it is difficult to automatically stir the onions, resulting in an incomplete and uneven cleaning and deodorizing effect. Furthermore, it is difficult to achieve the integrated effect of cleaning, sterilization, and dehydration using a single drive, making it not energy-efficient. To address these issues, existing equipment needs to be improved. Summary of the Invention

[0003] The purpose of this invention is to provide an onion juice extraction deodorization and sterilization device and process for removing pesticide residues, in order to solve the problems mentioned in the background art. Existing deodorization and sterilization devices generally use soaking for cleaning, which makes it difficult to automatically stir the onions during the cleaning process, resulting in an incomplete and uneven cleaning and deodorization effect, and it is difficult to use a single drive to achieve the integrated effect of cleaning, sterilization and dehydration.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an onion juice extraction deodorization and sterilization device and process for removing pesticide residues, comprising a base and an electric liquid inlet valve, wherein an ultrasonic cleaning box is fixed on one side of the upper end face of the base, a spray channel is fixed on one inner wall of the ultrasonic cleaning box, and the electric liquid inlet valve passes through one side of the ultrasonic cleaning box and is connected to the spray channel.

[0005] An electric telescopic column is fixed at the middle of the upper surface of the base. A first motor is fixed at the top of the electric telescopic column. The top of the first motor is connected to the rotating plate. Supports are symmetrically fixed on both sides of the rotating plate. An agitation mechanism is rotatably connected to the outer side of the support. The agitation mechanism includes a support plate. A limiting ring is fixed at the upper surface of the support plate. A rotating seat is rotatably connected inside the limiting ring. A filter cylinder is fixed at the top of the rotating seat. A rotating column is rotatably connected inside the filter cylinder. An agitation rod is fixed to the outer side of the rotating column.

[0006] Preferably, an electric drain valve is fixed to the bottom of the ultrasonic cleaning box, and a pad is fixed inside the electric drain valve.

[0007] Preferably, a second motor is fixed to the inner end face of the bracket, and the output end of the second motor is connected to the support plate.

[0008] Preferably, the upper end face of the support plate is movably connected to a universal ball, and the swivel rests on the universal ball.

[0009] Preferably, the inner wall of the limiting ring is provided with a slot, and the slots are evenly distributed circumferentially on the limiting ring.

[0010] Preferably, the lower side of the support plate is connected to the support box via a first compression spring. A third motor is fixed inside the support box, and the top of the third motor is connected to a rotating shaft. The rotating shaft passes through the support plate and is connected to a retaining sleeve. A through hole is provided on the rotating base, and the retaining sleeve is engaged and connected in the through hole.

[0011] Preferably, the upper surface of the rotating seat has symmetrically provided sliding grooves on both sides, and a limiting post is fixed in the sliding groove. The limiting post passes through the baffle, and the baffle is connected to the bottom of the sliding groove by a tension spring. An extrusion block is fixed on the outside of the baffle.

[0012] Preferably, a pin is slidably connected inside the groove, and the pin is connected to the inner wall of the groove through a second compression spring, and the pin is wedge-shaped and fitted onto the extrusion block.

[0013] Preferably, the rotating column extends through the bottom of the filter cartridge and is connected to the block, with the block located between two baffles.

[0014] A process for deodorizing, sterilizing, and removing pesticide residues from onion juice extraction includes the following steps:

[0015] S1. Remove pesticides and odors from the surface of onions: Place the chopped onions into the filter tube on the left and raise the filter tube. Then rotate the rotating plate 180 degrees and lower the filter tube into the ultrasonic cleaning box. At the same time, pass clean water into the ultrasonic cleaning box. During the ultrasonic cleaning of the onions, the stirring rod rotates to enhance the cleaning force. After cleaning, drain the cleaning water.

[0016] S2. Onion sterilization: Introduce edible sterilization liquid into the spray channel while rotating the stirring rod to sterilize the onions thoroughly. After sterilization, introduce clean water into the spray channel to rinse away the sterilization liquid.

[0017] S3. Onion water removal: Move the filter cylinder upwards, then rotate the filter cylinder quickly to remove the washing water remaining on the surface of the onion. After the filter cylinder is fully raised, rotate the rotating plate 180 degrees. After the filter cylinder is lowered, flip the support plate 180 degrees to automatically discharge the material. Flip the support plate 180 degrees again to continue feeding the material.

[0018] S4. In the subsequent processing of onions, one or more of the following methods are used to sterilize the onions: gamma ray sterilization, microwave sterilization, ultraviolet sterilization, and ozone sterilization.

[0019] Compared with the prior art, the beneficial effects of this invention are: the onion juice extraction, deodorization, sterilization, and pesticide residue removal equipment...

[0020] 1. This onion juice extraction, deodorization, sterilization, and pesticide residue removal equipment can achieve comprehensive and efficient cleaning and deodorization. The rotating plate can rotate 180 degrees, making it convenient to use two filter cartridges alternately. The two filter cartridges can be raised and lowered as a whole. The ultrasonic cleaning box is used to store clean water. After the feeding operation is completed and the filter cartridges are lowered into the clean water, the support box is placed on the pad, and the support plate continues to move down. The block is finally inserted into the sleeve. Then the sleeve rotates, driving the block, rotating column, and stirring rod to rotate, which facilitates automatic stirring of the onions, making the cleaning effect more comprehensive and efficient.

[0021] 2. This onion juice extraction, deodorization, sterilization, and pesticide residue removal equipment can achieve self-locking switching, comprehensive and uniform sterilization, and automatic dehydration. After the support box is placed on the pad, the support plate continues to move down, the squeezing block pushes open the pin, and the pin is inserted into the corresponding slot to lock the rotating seat. This ensures that the filter cartridge does not rotate while the stirring rod rotates. After the cleaning operation is completed, the support box moves up with the support plate and leaves the pad. The pin leaves the slot, thus unlocking the rotating seat. The block leaves the sleeve, and the two baffles limit the block. When the sterilizing liquid is sprayed onto the onion using the spray channel, the sleeve rotates, causing the rotating seat and filter cartridge to rotate, which facilitates comprehensive and uniform sterilization. After rinsing off the sterilizing liquid with clean water, the filter cartridge can be rotated at high speed for dehydration.

[0022] 3. This onion juice extraction, deodorization, sterilization, and pesticide residue removal equipment can achieve automatic feeding and continuous high-efficiency processing. The rotating plate can be rotated 180 degrees for convenient automatic feeding. While cleaning the onions in one filter cartridge, the next batch of onions can be fed into another filter cartridge, making the entire cleaning and sterilization operation more continuous and efficient. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a frontal cross-sectional view of the present invention.

[0025] Figure 3 This is a schematic diagram of the stirring mechanism of the present invention;

[0026] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0027] Figure 5 This is a schematic diagram of the connection structure between the limiting ring and the slot of the present invention.

[0028] In the diagram: 1. Base; 2. Ultrasonic cleaning tank; 3. Electric drain valve; 4. Spray channel; 5. Electric inlet valve; 6. Electric telescopic column; 7. First motor; 8. Rotating plate; 9. Support; 10. Second motor; 11. Agitator; 1101. Support plate; 1102. Universal ball; 1103. Limiting ring; 1104. Slot; 1105. Rotary seat; 1107. Filter cartridge; 1108. Support box; 1109. First compression spring; 1110. Third motor; 1111. Rotating shaft; 1112. Sleeve; 1113. Through hole; 1114. Slide groove; 1115. Limiting post; 1116. Baffle; 1117. Tension spring; 1118. Extrusion block; 1120. Second compression spring; 1119. Pin; 1121. Rotating column; 1122. Block; 1123. Stirring rod; 12. Pad. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figure 1-5 The present invention provides a technical solution: an onion juice extraction device for deodorization, sterilization, and pesticide residue removal, comprising a base 1 and an electric liquid inlet valve 5. An ultrasonic cleaning box 2 is fixed on one side of the upper end face of the base 1. A spray channel 4 is fixed on one inner wall of the ultrasonic cleaning box 2. The electric liquid inlet valve 5 passes through one side of the ultrasonic cleaning box 2 and is connected to the spray channel 4.

[0031] An electric telescopic column 6 is fixed at the middle of the upper surface of the base 1. A first motor 7 is fixed at the top of the electric telescopic column 6. The top of the first motor 7 is connected to the rotating plate 8. Supports 9 are symmetrically fixed on both sides of the rotating plate 8. An agitation mechanism 11 is rotatably connected to the outside of the support 9. The agitation mechanism 11 includes a support plate 1101. A limiting ring 1103 is fixed at the upper surface of the support plate 1101. A rotating seat 1105 is rotatably connected inside the limiting ring 1103. A filter cylinder 1107 is fixed at the top of the rotating seat 1105. A rotating column 1121 is rotatably connected inside the filter cylinder 1107. An agitation rod 1123 is fixed to the outside of the rotating column 1121.

[0032] In this embodiment, as Figure 1 and Figure 2As shown, an electric drain valve 3 is fixed at the bottom of the ultrasonic cleaning box 2, and a pad 12 is fixed inside the electric drain valve 3. After the stirring mechanism 11 containing onions is extended into the ultrasonic cleaning box 2 and lowered to the bottom, the stirring mechanism 11 is placed on the pad 12. After the electric drain valve 3 is opened, the liquid in the ultrasonic cleaning box 2 can be discharged.

[0033] In this embodiment, as Figure 1 and Figure 2 As shown, a second motor 10 is fixed to the inner end face of the bracket 9, and the output end of the second motor 10 is connected to the support plate 1101. The support plate 1101 can be rotated 180 degrees under the action of the second motor 10, so as to automatically pour out the onions in the filter cylinder 1107 for automatic feeding.

[0034] In this embodiment, as Figure 2 , Figure 3 and Figure 4 As shown, a universal ball 1102 is movably connected to the upper end face of the support plate 1101. The swivel seat 1105 rests on the universal ball 1102. When the swivel seat 1105 rotates, the universal ball 1102 rolls, which helps to reduce the friction between the swivel seat 1105 and the support plate 1101.

[0035] In this embodiment, as Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a slot 1104 is provided on the inner wall of the limiting ring 1103, and the slot 1104 is evenly distributed circumferentially on the limiting ring 1103. The limiting ring 1103 plays a limiting role during the rotation of the rotary seat 1105.

[0036] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the lower side of the support plate 1101 is connected to the support box 1108 via the first compression spring 1109. The support box 1108 has a third motor 1110 fixed inside, and the top of the third motor 1110 is connected to the rotating shaft 1111. The rotating shaft 1111 passes through the support plate 1101 and is connected to the retaining sleeve 1112. The rotating base 1105 has a through hole 1113. The retaining sleeve 1112 is engaged in the through hole 1113. The rotating shaft 1111 can rotate under the action of the third motor 1110, thereby driving the retaining sleeve 1112 to rotate. When the retaining sleeve 1112 is engaged in the through hole 1113, the rotating base 1105 can rotate together with the retaining sleeve 1112.

[0037] In this embodiment, as Figure 2 , Figure 3 and Figure 4As shown, symmetrical grooves 1114 are provided on both sides of the upper surface of the rotary seat 1105, and a limiting post 1115 is fixed in the groove 1114. The limiting post 1115 passes through the baffle 1116, and the baffle 1116 is connected to the bottom of the groove 1114 through a tension spring 1117. A pressing block 1118 is fixed on the outside of the baffle 1116. After the support box 1108 moves down to the bottom, the support plate 1101 and the rotary seat 1105 continue to move down. The sleeve 1112 moves against the baffle 1116 and the pressing block 1118. When the support plate 1101 and the rotary seat 1105 move up, the baffle 1116 and the pressing block 1118 will automatically reset under the action of the tension spring 1117. The limiting post 1115 plays a limiting role on the baffle 1116.

[0038] In this embodiment, as Figure 2 , Figure 3 and Figure 4 As shown, a pin 1119 is slidably connected in the slide groove 1114, and the pin 1119 is connected to the inner wall of the slide groove 1114 through the second compression spring 1120. The pin 1119 is wedge-shaped and fitted onto the pressing block 1118. After the support box 1108 moves down to the bottom, the support plate 1101 and the rotating seat 1105 continue to move down. The pin 1119 is pressed by the pressing block 1118 and moves. The pin 1119 is inserted into the corresponding slot 1104 to lock the rotating seat 1105. When the support plate 1101 and the rotating seat 1105 move up, the pin 1119 is not pressed and automatically resets under the action of the second compression spring 1120.

[0039] In this embodiment, as Figure 2 , Figure 3 and Figure 4 As shown, the rotating column 1121 passes through the bottom of the filter cartridge 1107 and is connected to the block 1122. The block 1122 is located between two baffles 1116. Initially, the block 1122 is limited between the two baffles 1116 and cannot rotate. When the rotating seat 1105 moves down relative to the retaining sleeve 1112, the retaining sleeve 1112 leaves the through hole 1113 and pushes up the two baffles 1116, thereby unlocking the block 1122. The retaining sleeve 1112 and the block 1122 are then engaged and connected together. Afterward, the retaining sleeve 1112 rotates, causing the block 1122 to rotate. The rotating column 1121 and the stirring rod 1123 rotate, which facilitates automatic stirring of the onions, making the cleaning and sterilization effect more comprehensive, uniform and efficient.

[0040] According to another aspect of the present invention, a process for deodorizing, sterilizing, and removing pesticide residues from onion juice extraction is provided, comprising the following steps:

[0041] S1. Remove pesticides and odors from the surface of onions: Place the chopped onions into the filter cylinder 1107 on the left and raise the filter cylinder 1107. Then rotate the rotating plate 8 180 degrees and lower the filter cylinder 1107 into the ultrasonic cleaning box 2. At the same time, pass clean water into the ultrasonic cleaning box 2. During the ultrasonic cleaning of the onions, the stirring rod 1123 rotates to enhance the cleaning force. After cleaning, drain the cleaning water.

[0042] S2. Onion sterilization: Introduce edible sterilization liquid into the spray channel 4, and at the same time rotate the stirring rod 1123 to sterilize the onion. After sterilization, introduce clean water into the spray channel 4 to rinse away the sterilization liquid.

[0043] S3. Onion water removal: Move the filter cylinder 1107 upward, then rotate the filter cylinder 1107 quickly to remove the washing water remaining on the surface of the onion. After the filter cylinder 1107 is fully raised, rotate the rotating plate 8 180 degrees. After the filter cylinder 1107 is lowered, flip the support plate 1101 180 degrees to automatically unload the material. Flip the support plate 1101 180 degrees again to continue feeding the material.

[0044] S4. In the subsequent processing of onions, one or more of the following methods are used to sterilize the onions: gamma rays, microwaves, ultraviolet rays, and ozone.

[0045] The working principle of this device is as follows: First, clean water is introduced into the ultrasonic cleaning tank 2. Two filter cylinders 1107 are lowered, and unwashed onions are introduced into the left filter cylinder 1107. After loading, the two filter cylinders 1107 are raised again. Then, the rotating plate 8 is rotated 180 degrees, and the two filter cylinders 1107 are lowered again. The filter cylinder 1107 containing onions is inserted into the filter cylinder 1107 and immersed in water to clean the onions. The support box 1108 is finally placed on the pad 12. When the filter cylinder 1107 continues to move down, the pin 1119 is moved by the pressure of the pressing block 1118. The pin 1119 is inserted into the corresponding slot 1104, thereby locking the rotating base 1105. The block 1122 is finally inserted into the sleeve 111. Inside the 2nd section, the rotating sleeve 1112 drives the cube 1122 and the stirring rod 1123 to rotate, thereby automatically stirring the onions and making the cleaning effect more comprehensive and efficient. After the cleaning operation is completed, first open the electric drain valve 3 to drain the dirty water. After the drainage is completed, close the electric drain valve 3, raise the filter cartridge 1107 and make the support box 1108 separate from the pad 12, and the cube 1122 separates from the sleeve 1112. Then, edible sterilization liquid is introduced into the spray channel 4. The spray channel 4 sprays edible sterilization liquid onto the onions to carry out the sterilization operation. At the same time, the rotating sleeve 1112 drives the rotating seat 1105 and the filter cartridge 1107 to rotate, thereby achieving comprehensive sterilization. Then, clean water is introduced into the spray channel 4 to rinse away the dirty water. The sterilization liquid on the surface of the onions rises again into filter cartridge 1107, causing it to leave the liquid. Filter cartridge 1107 then rotates rapidly to automatically remove water. Afterward, filter cartridge 1107 is raised and reset. The rotating plate 8 is rotated 180 degrees again, and filter cartridge 1107 is lowered. The filter cartridge 1107 is then flipped over to empty the onions. After completing the feeding operation, filter cartridge 1107 can be flipped back, and the above operation can be repeated. This facilitates the orderly cleaning and sterilization of onions. While cleaning and sterilizing one batch of onions, the next batch of onions can be fed into another filter cartridge 1107. In subsequent onion processing, sterilization methods such as gamma ray sterilization, microwave sterilization, ultraviolet sterilization, and ozone sterilization can be used. One or more of these methods can be used to sterilize onions. Gamma ray sterilization destroys the DNA, proteins, and enzymes of microorganisms, causing them to die and achieving sterilization. Microwave sterilization uses the heat energy generated by microwave irradiation to kill microorganisms and spores, and is suitable for sterilizing liquid and solid materials. Ultraviolet sterilization works by destroying and altering the DNA structure of microorganisms through ultraviolet irradiation, causing bacteria to die immediately or be unable to reproduce, thus achieving sterilization. Ozone decomposes the enzymes required for glucose production inside bacteria, inactivating and killing the bacteria, thereby achieving sterilization. Furthermore, any content not described in detail in this specification is prior art known to those skilled in the art.

[0046] In summary, this onion juice extraction deodorization, sterilization, and pesticide residue removal equipment and process achieve the goals of comprehensive and efficient cleaning and deodorization, self-locking switching, comprehensive and uniform sterilization, automatic dehydration, automatic feeding, and continuous and efficient processing, thus meeting people's usage needs.

[0047] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An onion juice extraction device for deodorization, sterilization, and pesticide residue removal, comprising a base (1) and an electric inlet valve (5), characterized in that: An ultrasonic cleaning box (2) is fixed on one side of the upper surface of the base (1). A liquid spraying channel (4) is fixed on one inner wall of the ultrasonic cleaning box (2). The electric liquid inlet valve (5) passes through one side of the ultrasonic cleaning box (2) and is connected to the liquid spraying channel (4). An electric telescopic column (6) is fixed at the middle of the upper surface of the base (1). A first motor (7) is fixed at the top of the electric telescopic column (6). The top of the first motor (7) is connected to the rotating plate (8). Supports (9) are symmetrically fixed on both sides of the rotating plate (8). An agitation mechanism (11) is rotatably connected to the outer side of the support (9). The agitation mechanism (11) includes a support plate (1101). A limiting ring (1103) is fixed at the upper surface of the support plate (1101). A rotating seat (1105) is rotatably connected inside the limiting ring (1103). A filter cylinder is fixed at the top of the rotating seat (1105). 1107), a rotating column (1121) is rotatably connected inside the filter cartridge (1107), and an agitator (1123) is fixed on the outside of the rotating column (1121). A universal ball (1102) is movably connected to the upper end face of the support plate (1101), and the rotating seat (1105) rests on the universal ball (1102). A slot (1104) is provided on the inner wall of the limiting ring (1103), and the slots (1104) are evenly distributed circumferentially on the limiting ring (1103). The lower side of the support plate (1101) is connected to the support box (1108) through a first compression spring (1109). A third motor (1110) is fixed inside the box (1108), and the top of the third motor (1110) is connected to the rotating shaft (1111). The rotating shaft (1111) passes through the support plate (1101) and is connected to the retaining sleeve (1112). A through hole (1113) is provided on the rotating base (1105), and the retaining sleeve (1112) is engaged in the through hole (1113). Sliding grooves (1114) are symmetrically provided on both sides of the upper end face of the rotating base (1105), and a limiting post (1115) is fixed in the sliding groove (1114). The limiting post (1115) passes through the baffle (1116), and the baffle (1115) passes through the baffle (1116). 116) The bottom of the slide (1114) is connected by a tension spring (1117). An extrusion block (1118) is fixed on the outside of the baffle (1116). A pin (1119) is slidably connected in the slide (1114). The pin (1119) is connected to the inner wall of the slide (1114) by a second compression spring (1120). The pin (1119) is wedge-shaped and fitted to the extrusion block (1118). The rotating column (1121) penetrates the bottom of the filter cylinder (1107) and is connected to the block (1122). The block (1122) is located between the two baffles (1116).

2. The onion juice extraction, deodorization, sterilization, and pesticide residue removal equipment according to claim 1, characterized in that: The bottom of the ultrasonic cleaning box (2) is fixed with an electric drain valve (3), and a pad (12) is fixed inside the electric drain valve (3).

3. The onion juice extraction, deodorization, sterilization, and pesticide residue removal equipment according to claim 1, characterized in that: The second motor (10) is fixed to the inner end face of the bracket (9), and the output end of the second motor (10) is connected to the support plate (1101).

4. A process for deodorizing, sterilizing, and removing pesticide residues from onion juice extraction, applied to the onion juice extraction, deodorizing, sterilizing, and pesticide residue removal equipment described in any one of claims 1-3, characterized in that, Includes the following steps: S1. Remove pesticides and odors from the surface of onions: Place the chopped onions into the filter tube (1107) on the left and raise the filter tube (1107). Then rotate the rotating plate (8) 180 degrees and lower the filter tube (1107) into the ultrasonic cleaning box (2). At the same time, pass clean water into the ultrasonic cleaning box (2). During the ultrasonic cleaning of the onions, the stirring rod (1123) rotates to strengthen the cleaning force. After cleaning, drain the cleaning water. S2. Onion sterilization: Introduce edible sterilization liquid into the spray channel (4) and rotate the stirring rod (1123) at the same time to sterilize the onion. After sterilization, introduce clean water into the spray channel (4) to rinse away the sterilization liquid. S3. Onion water removal: Move the filter cylinder (1107) up, then rotate the filter cylinder (1107) quickly to remove the washing water remaining on the surface of the onion. After the filter cylinder (1107) is fully raised, rotate the rotating plate (8) 180 degrees. After the filter cylinder (1107) is lowered, flip the support plate (1101) 180 degrees to automatically unload the material. Flip the support plate (1101) 180 degrees again to continue feeding the material. S4. In the subsequent processing of onions, one or more of the following methods are used to sterilize the onions: gamma ray sterilization, microwave sterilization, ultraviolet sterilization, and ozone sterilization.

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