CN102349565B - Online HVPEF (high-voltage pulsed electric field) treatment chamber for non-thermal sterilization of meat products - Google Patents
Online HVPEF (high-voltage pulsed electric field) treatment chamber for non-thermal sterilization of meat products Download PDFInfo
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- CN102349565B CN102349565B CN201110311244.8A CN201110311244A CN102349565B CN 102349565 B CN102349565 B CN 102349565B CN 201110311244 A CN201110311244 A CN 201110311244A CN 102349565 B CN102349565 B CN 102349565B
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Abstract
The invention discloses an online HVPEF (high-voltage pulsed electric field) treatment chamber for non-thermal sterilization of meat products, and the treatment chamber is characterized in that an air cylinder is arranged on the lower end face of an upper bracket, one ends of two guide rods are respectively vertically arranged on the lower end face of the upper bracket on both sides of the air cylinder, the two ends of a mechanical arm are in sliding fit with the guide rods, the mechanical arm is provided with an upper treatment chamber, the upper treatment chamber is connected with a piston rod of the air cylinder, and the upper bracket is also provided with a controller; and a chain drive motor is arranged on the lower end face of a lower bracket, driven sprockets (a set of two) are respectively arranged on the lower end face of the lower bracket on both sides of the motor, the chain drive motor drives two sets of drive chains to carry out circulating rotation by virtue of the driven sprockets, the two sides of the lower bracket are symmetrically provided with a pair of photoelectric sensors, and the two sides of the drive chains are equidistantly provided with a plurality of lower treatment chambers. By using the online HVPEF treatment chamber disclosed by the invention, the uniformity of electric field distribution in a treatment cavity is ensured; and due to an adopted circulating cooling structure, the temperature of an electrode is reduced, the temperature rise of meat products in the process of treatment is reduced, the continuous operation of a sterilization process is ensured, and the production efficiency is improved.
Description
Technical field
The present invention relates to a kind of solid-state food bactericidal unit based on the high-pressure pulse electric technology, especially relate to a kind of for the non-heat-killed online high-voltage pulse electric field processing chamber of meat products.
Background technology
The consumption figure of meat and consumption structure are to weigh the important symbol of a national living standards of the people height.At present, China has become the first in the world and has produced meat big country, and China's meat total output reached 7,925 ten thousand tons in 2010, had increased by 3.6% than the last year.Livestock and poultry in 2010 are butchered and meat packing scale and enterprise's sum reach 4054 families, and the above enterprise of scale accounts for meat enterprise sum 20%.According to expectation, by 2015, China's meat total output developing goal will reach 8,600 ten thousand tons, and the consumption of meat amount is 61 kilograms per capita, becomes the fastest-rising country of production of meat.Along with living standard improves, common people have also improved the quality of meat and the requirement of nutrition.Along with the raising of The development in society and economy and safety and Health consciousness, the consumer has higher requirement to the quality of meat and meat products, as safe, instant, maintenance is natural flavour mountaineous and good appearance, do not contain anticorrisive agent etc.But kind and quality from present homemade meat product still can not satisfy the demands of consumers.In general, healthy livestock and poultry organization internal is aseptic, but in process, cut apart from slaughtering to, freezing warehouse-in, transport, thaw, Minced Steak etc., be subjected to processing environment, plant equipment, processing water, auxiliary material and operating personnel's influence, meat products all may cause microbial contamination in various degree, and it relates to each link in the process.Therefore, it is particularly important that the sterilization of meat products just seems, this is an important means that guarantees the hygienic quality of meat products.
Traditional heat kill bacterium method namely by to the food heat temperature raising, and keeps the regular hour at a certain temperature, makes microorganism in the food reach heating power and causes death.This sterilizing methods major part is to carry out simultaneously in the shortening process of meat products, on the one hand meat products slaking gradually in heating process, on the other hand in the meat products many to heat resist power more weak in, the microorganism of low form plays good sterilization functions.The hear resistance of the bacterial nutrition of non-brood cell bacterium, saccharomycete, mould and gemma bacterium is all lower, and the very short time of heating just can be killed under 70 ~ 80 oC left and right sides temperature.The hear resistance of bacterial spore is very strong, as the gemma of clostridium botulinum, generally boils under 1 ~ 6 h or the 120 oC high steams and just can kill through 4 ~ 10 min.The meat products of crossing through autoclave sterilization, the excessive sex change of meat protein, the part nutritive loss, meat fiber elasticity variation, meat is too mashed shaky, with overdone flavor, but the shelf-life be 6 months.Because present meat products is towards nutrient laden, healthization development, all at the development low-temperature meat product, it keeps original nutrition and intrinsic local flavor to greatest extent in each enterprise, and meat is solid, and chewiness is arranged.
High-pressure pulse electric (Pulsed Electric Field) technology is a kind of emerging non-thermal sterilization technology, has become one of active research field the most, international food processing circle.It not only has good bactericidal effect, and nutritional labeling, color and luster and the local flavor of retaining food product, most processing that is used for food liquid at present preferably.For solid-state food, the esp meat goods, the high-pressure pulse electric technology also has extraordinary sterilization effect, and can keep nutrition and the local flavor of meat products in processing procedure to greatest extent.In the high-pressure pulse electric treatment system, process chamber is one of two most important core devices, and the design of process chamber also is the key factor that influences high-pressure pulse electric technical finesse effect.The high-voltage pulse electric field processing chamber of studying at present is used for the processing of food liquid mostly, and is not suitable for solid-state food.Therefore, a kind of non-heat-killed online high-voltage pulse electric field processing chamber of meat products that is applicable to of design is very important.
Summary of the invention
The object of the present invention is to provide a kind of for the non-heat-killed online high-voltage pulse electric field processing chamber of meat products, remedy the blank of the high-voltage pulse electric field processing chamber research that is applicable to the solid-state food sterilization on the market, be conducive to promote the high-pressure pulse electric technology in the application of solid-state food process field.
To achieve these goals, the technical solution used in the present invention is:
The present invention installs cylinder in the upper spider lower surface, one end of two guide posts is vertically mounted on respectively on the upper spider lower surface of cylinder both sides, the mechanical arm two ends are slidingly matched with the guide post formation respectively, the top process chamber is housed on the mechanical arm, the top process chamber is connected with the piston rod of cylinder, and controller also is housed on the upper spider; Upper spider is installed on the lower bearing bracket, the chain drive motor is installed in the lower bearing bracket lower surface, it is one group driven sprocket that the lower bearing bracket lower surface of chain drive motor both sides is installed two respectively, the chain drive motor drives two groups of driving chains through the driven sprocket cycle rotation, the bilateral symmetry of lower bearing bracket is settled a pair of photoelectric sensor, and a plurality of bottoms process chamber equidistantly is equipped with in the driving chain both sides.
Described top process chamber is identical with the structure of bottom process chamber, the bottom process chamber is rectangular insulation cavity, rectangular insulation cavity bottom equidistantly has 2 to 4 square through-holes, the plate electrode that the cross section is the T font all is installed in each square through-hole, each plate electrode upper end withstands on the square through-hole bayonet socket, each plate electrode lower end is fixed by the insulation collet of convex shape, each plate electrode bottom surface and form 2 to 4 circular passages separately between the insulation collet of convex shape, one side of rectangular insulation cavity has water inlet, the opposite side of rectangular insulation cavity has delivery port, constitutes cooling-water duct; Top process chamber and bottom process chamber are superimposed as process chamber up and down, and the process chamber middle part forms process chambers; Plate electrode in the process chamber of top is connected with the HV Terminal of high-voltage pulse generator by high-tension cable respectively, and the plate electrode of bottom process chamber is connected with the ground terminal of high-voltage pulse generator by high-tension cable respectively, and direction of an electric field is vertical direction.
Described plate electrode material is stainless steel 316-L; Described rectangular insulation cavity and insulation collet material are polytetrafluoroethylene (PTFE).
Described photoelectric sensor is correlation type photoelectric sensor OMRON E3C-T1.
The beneficial effect that the present invention has is:
The plate electrode structure that the present invention adopts, simple for structure, be convenient to unpick and wash, guaranteed the uniformity that the process chambers internal electric field distributes effectively.The circulation cooling structure that adopts has reduced the temperature of electrode effectively, can reduce the temperature of meat products in processing procedure and raise.Should guarantee the continuous operation of sterilization process in the proposition of lines conveying equipment, realize automated productin line, increase substantially production efficiency.The present invention can solve the residual problem of ubiquitous meat products pathogenic bacteria in the market, fills up the research blank that high-voltage pulse electric field sterilization is equipped in solid-state food sterilization aspect, and is conducive to the high-pressure pulse electric technology to industrialization development.
Description of drawings
Fig. 1 is front view of the present invention.
Fig. 2 is the vertical view of Fig. 1 lower bearing bracket.
Fig. 3 is the whole cutaway view of process chamber.
Fig. 4 is the side view of Fig. 3 process chamber.
Fig. 5 is the enlarged drawing of bottom process chamber.
Among the figure: 1, process chamber; 1-1, plate electrode; 1-2, rectangular insulation cavity; 1-3, insulation collet; 1-4, cooling-water duct; 1-5, process chambers; 2, cylinder; 3, cylinder piston rod; 4, guide post; 5, mechanical arm; 6, upper spider; 7, lower bearing bracket; 8, driving chain; 9, chain drive motor; 10, driven sprocket; 11, controller; 12, photoelectric sensor.
The specific embodiment
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
As shown in Figure 1 and Figure 2, the present invention installs cylinder 2 in upper spider 6 lower surfaces, one end of two guide posts 4 is vertically mounted on respectively on upper spider 6 lower surfaces of cylinder 2 both sides, mechanical arm 5 two ends are slidingly matched with guide post 4 formations respectively, the top process chamber is housed on the mechanical arm 5, the top process chamber is connected with the piston rod 3 of cylinder 2, and controller 11 also is housed on the upper spider 6; Upper spider 6 is installed on the lower bearing bracket 7, chain drive motor 9 is installed in lower bearing bracket 7 lower surfaces, it is one group driven sprocket 10 that lower bearing bracket 7 lower surfaces of chain drive motor 9 both sides are installed two respectively, chain drive motor 9 drives two groups of driving chains 8 through driven sprocket 10 cycle rotations, the bilateral symmetry of lower bearing bracket 7 is settled a pair of photoelectric sensor 12, and a plurality of bottoms process chamber equidistantly is equipped with in driving chain 8 both sides.
As Fig. 3, Fig. 4, shown in Figure 5, described top process chamber is identical with the structure of bottom process chamber, the bottom process chamber is rectangular insulation cavity 1-2, rectangular insulation cavity 1-2 bottom equidistantly has 2 to 4 square through-holes, it is the plate electrode 1-1 of T font that the cross section all is installed in each square through-hole, each plate electrode 1-1 upper end withstands on the square through-hole bayonet socket, each plate electrode 1-1 lower end is fixed by the insulation collet 1-3 of convex shape, each plate electrode 1-1 bottom surface and form 2 to 4 circular passages separately between the insulation collet 1-3 of convex shape, have long and narrow flat groove before and after each square through-hole simultaneously, be used for intercommunicating pore, the side of rectangular insulation cavity 1-2 has water inlet, the opposite side of rectangular insulation cavity 1-2 has delivery port, constitutes cooling-water duct 1-4; Close-fitting is fixed between insulation collet 1-3 and the plate electrode 1-1; Top process chamber and bottom process chamber are superimposed as process chamber 1 up and down, and process chamber 1 middle part forms process chambers 1-5; Plate electrode in the process chamber of top is connected with the HV Terminal of high-voltage pulse generator by high-tension cable respectively, and the plate electrode of bottom process chamber is connected with the ground terminal of high-voltage pulse generator by high-tension cable respectively, and direction of an electric field is vertical direction.
Described plate electrode 1-1 material is stainless steel 316-L; Described rectangular insulation cavity 1-2 and insulation collet 1-3 material are polytetrafluoroethylene (PTFE).
Described photoelectric sensor 12 is correlation type photoelectric sensor OMRON E3C-T1.
Operation principle of the present invention:
Embodiment:
Present embodiment serves as to handle object with cold fresh meat, and process chamber is carried out detailed design.Cold fresh meat, be cooling meat again, the ice fresh meat, refer to the strict veterinary quarantine system of carrying out, poultry trunk after butchering is carried out cooling processing rapidly, make trunk temperature (be measurement point with the hind shank center) in 24 hours, reduce to 0 ~ 4 oC, and in following process, circulation and sales process, remain the fresh meat in 0 ~ 4 oC scope.Developed country just begins to promote cold fresh meat as far back as the eighties of last century twenty or thirty age, and in the fresh meat of its consumption at present, cold fresh meat accounts for about 90%.Online high-voltage pulse electric field processing chamber involved in the present invention is equidistantly left 3 square through-holes in rectangular insulation cavity 1-2 bottom, and 3 plate electrode 1-1 are installed altogether, and each plate electrode lower end is fixed by the insulation collet 1-3 of convex shape.Each plate electrode cross section is 300 mm * 300 mm, distance between two plate electrodes is 20 mm up and down, apply the square-wave pulse of 50 kV between two-plate, then the electric-field intensity between two plate electrodes reaches 25 kV/cm, meets the requirement of killing pathogenic microorganisms in the meat products substantially.
During bactericidal unit work, correlation type photoelectric sensor OMRON E3C-T1 collects and is sent to that to adopt the PLC controller be the control system of main body behind the signal, control system is sent control signal, stop driving chain 8 work, and by the air pressure driving cylinder piston rod 3 downward top process chambers that promote, and then realize closure and the unlatching of two process chambers up and down.After the cold fresh meat in the process chambers 1-5 of process chamber is continued 0.5 s by high-voltage pulse electric field sterilization, 11 control cylinder piston rods 3 of controller reset, and drive driving chain 8 and move on, next bottom process chamber is transported to the sterilization that another process chamber of beginning is continued in the operating position.So circulation realizes that the high-pressure pulse electric technology is to the online low temperature sterilization of cold fresh meat repeatedly.
Claims (3)
1. one kind is used for the non-heat-killed online high-pressure pulse electric treating apparatus of meat products, it is characterized in that: cylinder (2) is installed in upper spider (6) lower surface, one end of two guide posts is vertically mounted on respectively on upper spider (6) lower surface of cylinder (2) both sides, mechanical arm (5) two ends are slidingly matched with guide post (4) formation respectively, mechanical arm is equipped with the top process chamber on (5), the top process chamber is connected with the piston rod (3) of cylinder (2), and controller (11) also is housed on the upper spider (6); Upper spider (6) is installed on the lower bearing bracket (7), chain drive motor (9) is installed in lower bearing bracket (7) lower surface, it is one group driven sprocket that lower bearing bracket (7) lower surface of chain drive motor (9) both sides is installed two respectively, chain drive motor (9) drives two groups of driving chains (8) through the driven sprocket cycle rotation, the bilateral symmetry of lower bearing bracket (7) is settled a pair of photoelectric sensor (12), and a plurality of bottoms process chamber equidistantly is equipped with in driving chain (8) both sides;
Described top process chamber is identical with the structure of bottom process chamber, the bottom process chamber is rectangular insulation cavity (1-2), rectangular insulation cavity (1-2) bottom equidistantly has 2 to 4 square through-holes, the plate electrode that the cross section is the T font all is installed in each square through-hole, each plate electrode upper end withstands on the square through-hole bayonet socket, each plate electrode lower end is fixing by the insulation collet (1-3) of convex shape, each plate electrode bottom surface and form 2 to 4 circular passages separately between the insulation collet of convex shape, one side of rectangular insulation cavity (1-2) has water inlet, the opposite side of rectangular insulation cavity (1-2) has delivery port, constitutes cooling-water duct (1-4); Top process chamber and bottom process chamber are superimposed as process chamber (1) up and down, and process chamber (1) middle part forms process chambers (1-5); Plate electrode in the process chamber of top is connected with the HV Terminal of high-voltage pulse generator by high-tension cable respectively, and the plate electrode of bottom process chamber is connected with the ground terminal of high-voltage pulse generator by high-tension cable respectively, and direction of an electric field is vertical direction.
2. according to claim 1 a kind of for the non-heat-killed online high-pressure pulse electric treating apparatus of meat products, it is characterized in that: the plate electrode material is stainless steel 316-L; Described rectangular insulation cavity (1-2) and insulation collet material are polytetrafluoroethylene (PTFE).
3. according to claim 1 a kind of for the non-heat-killed online high-pressure pulse electric treating apparatus of meat products, it is characterized in that: described photoelectric sensor (12) is correlation type photoelectric sensor OMRON E3C-T1.
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| CN201110311244.8A CN102349565B (en) | 2011-10-14 | 2011-10-14 | Online HVPEF (high-voltage pulsed electric field) treatment chamber for non-thermal sterilization of meat products |
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| CN103211274B (en) * | 2013-04-03 | 2014-12-03 | 华南理工大学 | Semiconductor cooling device applied to pulse electric field processing chamber |
| CN106615030A (en) * | 2016-10-10 | 2017-05-10 | 成都沃特塞恩电子技术有限公司 | Thawing cavity with parallel-plate capacitor and radiofrequency thawing device |
| CN108142781B (en) * | 2018-02-09 | 2021-06-15 | 浙江大学 | High-voltage pulse electric field assisted vacuum packaging steak rapid tenderizing device and method |
| CN112136869A (en) * | 2020-09-17 | 2020-12-29 | 利辛县凯利达肉类加工有限公司 | High-pressure meat sterilization treatment device |
| CN116138471B (en) * | 2023-02-21 | 2023-12-22 | 苏州屹润食品科技有限公司 | Low-frequency high-voltage pulse electric field cooperated cold plasma food sterilization equipment |
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