CN210520016U - Ultrasonic vacuum synchronous degassing and nitrogen filling device and orange juice filling line thereof - Google Patents

Abstract

The utility model discloses a supersound vacuum is degasification in step and is filled nitrogen device and orange juice filling line thereof. The utility model discloses an orange juice processing method and filling line all adopt the synchronous degasification nitrogen filling device of supersound vacuum to realize the synchronous degasification nitrogen filling of straight drink packing, it mainly includes the arm of up-and-down motion, set up in the arm bottom and straight drink packing opening matched with degasification joint, set up the gaseous evacuation pipe in the extraction packing on degasification joint, insert the ultrasonic probe under the liquid level, detect the pressure sensor of no liquid department pressure in the packing, insert the dissolved oxygen test probe under the liquid level and pour into the nitrogen injection pipe of nitrogen gas in the packing, and the PLC controller. The device is matched with a direct drinking packaging opening for use so as to realize rapid degassing and nitrogen filling before capping, the shelf life of the vegetable juice product is prolonged to more than 120 days after capping on the premise of ensuring the sensory quality, the shelf life is prolonged by more than 2-3 times compared with the shelf life (30-45 days) of most NFC fruit and vegetable juice products, and the storage, transportation and marketing cost is greatly reduced.

Description

Ultrasonic vacuum synchronous degassing and nitrogen filling device and orange juice filling line thereof

Technical Field

The utility model relates to a fruit processing technology field especially relates to a supersound vacuum is synchronous degasification and is filled nitrogen device and orange juice filling line thereof.

Background

Orange juice is the largest citrus juice traded worldwide. In recent years, the processing volume of orange juice has increased dramatically in our country, which has benefited From the rapid development of a new type of orange juice, Not Concentrated reduced (NFC) orange juice, that differs From the traditional processing. The NFC orange juice is prepared by squeezing mature fresh fruits and filtering the juice to obtain fruit juice, directly carrying out aseptic filling after pasteurization, and storing, transporting and selling the fruit juice under the condition of a cold chain, thus greatly retaining the nutrition and flavor of the orange juice and being popular with consumers. The NFC orange juice reserves rich functional components in the original fruit and has important significance for promoting human health. Vc, phenolic compounds, carotenoid and other substances in the orange juice have physiological effects of resisting oxidation, inhibiting bacteria, resisting tumors and the like; among them, carotenoids are also the source of important vitamin a in animals. However, during the processing and storage process, the nutrients such as vitamin C, phenolic compounds and carotenoid in the orange juice are easy to be oxidized and degraded under the action of environmental factors, so that the quality of the orange juice is reduced, and oxygen is a main factor for oxidizing and degrading the nutrients. Oxygen in air is present in high concentrations and can dissolve in juice by diffusion to form Dissolved Oxygen (DO). DO in orange juice is usually present as molecular or diradical triplet oxygen, which is the lower energy ground state oxygen, but when light and a photocatalyst are present, triplet oxygen is excited and converted to singlet oxygen, which is highly reactive with food substrates. Research shows that the DO concentration in orange juice directly determines the oxidation degradation rate of nutrient substances such as Vc, and the like, so that the nutritional quality of the orange juice is reduced. Therefore, reducing the DO content in orange juice is one of the effective ways to improve the quality of NFC orange juice.

In the research on the influence of oxygen content on the quality of fruit and vegetable juice, the storage process is mainly focused in the early stage, but there are only few reports in literature on the control of oxygen content in the processing process of fruit and vegetable juice, and particularly, a method for controlling the oxygen content in a terminal fruit and vegetable juice product and the influence thereof on the storage quality of the product are in urgent need of research. The utility model discloses the research result in earlier stage of the team of people's place shows: the fresh orange juice is aerated for a long time in the processes of filtering and pipeline flowing, oxygen in pipeline air is continuously dissolved into the orange juice, and the DO content in the orange juice is nearly saturated after filling to the end product package. The presence of substantial amounts of DO is likely to cause nutrient loss and loss of quality in the orange juice during subsequent distribution and distribution, and therefore control of dissolved oxygen parameters is particularly important during processing and distribution of the orange juice.

SUMMERY OF THE UTILITY MODEL

Not enough to above prior art, the utility model aims to provide a supersound vacuum is degasification in step and is filled nitrogen device and orange juice filling line thereof to solve the warehousing and transportation of the NFC fruit juice ring festival that prior art exists and take place the quality degradation easily and with high costs, especially shelf life short scheduling problem.

The technical scheme of the utility model as follows:

the utility model discloses a synchronous degasification nitrogen charging device in supersound vacuum, including the arm of up-and-down motion, set up the degassing joint of the direct drink package opening of closing cap below the arm, set up respectively and draw the vacuum tube of gas in the direct drink package on the degassing joint, insert the ultrasonic probe under the direct drink package liquid level, detect the pressure sensor of no liquid department pressure in the direct drink package, insert the dissolved oxygen detection probe that detects liquid oxygen content under the direct drink package liquid level and pour into the nitrogen injection pipe of nitrogen into the direct drink package, supersonic generator and PLC controller connected with ultrasonic probe; when the ultrasonic vacuum synchronous degassing and nitrogen-filling device is matched with an opening of a direct drinking package for use, both the air suction port of the vacuum-pumping pipe and the nitrogen outlet of the nitrogen-filling pipe are higher than the liquid level in the direct drinking package; one end of the vacuum pumping pipe is connected with a vacuum pump, the nitrogen injection pipe is connected with a nitrogen storage device, and a nitrogen injection pump for conveying nitrogen into the direct drinking package is arranged on the nitrogen injection pipe; and the PLC is respectively and electrically connected with the pressure sensor, the dissolved oxygen probe, the vacuum pump, the nitrogen injection pump and the ultrasonic generator.

Further, the bottom of the degassing joint is also provided with a rubber pad for sealing an opening of the direct drinking package; the ultrasonic probe, the dissolved oxygen probe, the pressure sensor, the vacuumizing tube and the nitrogen injection tube are all sleeved in the degassing joint and the rubber pad.

Further, the vacuum tube consists of a hard tube and a hose; the hard pipe is arranged on the joint and is connected with the vacuum pump through a hose.

Further, the ultrasonic probe comprises an amplitude transformer and an ultrasonic tool head inserted into the liquid level of the direct drinking package, the ultrasonic tool head is fixedly connected to the amplitude transformer, and the amplitude transformer is connected with the ultrasonic generator. The ultrasonic tool head penetrates through the degassing connector and is inserted below the liquid level of the direct drinking package.

Further, annotate the nitrogen pipe for withstand voltage resistant PVC material notes nitrogen pipe that freezes, pour into the bottle through connecting outside nitrogen gas or liquid nitrogen in, can guarantee the anaerobic environment, can maintain the ordinary pressure again, keep directly drinking the existing shape of packing. Preferably, the nitrogen storage device is a liquid nitrogen tank, and the nitrogen injection pump is a low-temperature-resistant liquid nitrogen pump.

Further, the degassing device also comprises a sleeve fixedly arranged above the degassing joint and used for regulating various pipelines and cables, and the upper end of the sleeve is fixedly connected with the mechanical arm. Various pipelines and cables are regulated through the sleeve, so that the use environment is tidier.

The utility model discloses a synchronous degasification of supersound vacuum fills nitrogen device when using, at first drive degasification through the arm and connect mutually supporting with the opening of straight drink packing, through the air in the straight drink packing of evacuation pipe extraction under the effect of vacuum pump and when the vacuum pump extraction air, simultaneously make ultrasonic transducer open the ultrasonic wave through PLC controller control supersonic generator, the pressure that makes no liquid department in the straight drink packing is maintained between 5-10kpa, dissolved oxygen reaches below 1mg/L in the straight drink packing, through PLC controller control vacuum pump and supersonic generator stop work, open under PLC controller control then and annotate the nitrogen pump and fill in the appropriate amount nitrogen through annotating the nitrogen pipe to straight drink packing after, mention the synchronous degasification of supersound vacuum and fill nitrogen device through the arm, and then the closing cap is screwed up can. The amount of nitrogen filled in the direct drinking package can be set in advance through the PLC, and when the appropriate amount is reached, the mechanical arm is controlled to be separated from the direct drinking package.

The ultrasonic vacuum synchronous quick degassing and nitrogen-filling orange juice processing method comprises the following steps:

s101, cleaning sweet orange raw materials to remove dirt and pesticide residues on the surface of the sweet orange, moderately squeezing the sweet orange raw materials with peel or half-cut sweet orange, refining the sweet orange raw materials to remove pulp, and blending orange juice obtained from different raw materials until the quality of the orange juice is uniform. The orange juice squeezed by the juice extractor is introduced into a rotary filtering refiner to remove fruit residues or fruit pulp, the juice sugar degree and acidity of the different batches of the juice squeezed from different raw materials are inconsistent, the juice sugar degree and acidity are required to be stored in batches in a transfer tank, the juice sugar content in the different transfer tanks is regulated to a uniform product standard, and the general sugar-acid ratio of the prepared orange juice is not less than 17, but depends on different product requirements.

And S102, performing vacuum degassing on the prepared orange juice, and performing pasteurization. And (4) performing vacuum degassing on the orange juice prepared in the step (S101) through a juice vacuum degassing machine, wherein the vacuum degree is generally maintained at 0.6-0.8bar, and then performing sterilization through a sterilization machine connected in series behind the juice vacuum degassing machine. The orange juice sterilization generally adopts a pasteurization mode of keeping the temperature at 93 +/-2 ℃ for 15-30 s; in special cases, an instant sterilization method of 3-10 s at 120 ℃ can be used.

And S103, cooling the sterilized orange juice obtained in the step S102 to a filling or storage temperature. The filling temperature is generally controlled to be 0-30 ℃, the storage temperature of the large low-temperature tank is generally 4 ℃, and in order to ensure the best storage quality, the critical temperature of 0 ℃ can be even used.

S104: injecting the cooled orange juice or the orange juice stored in a large tank in the step S103 into the sterilized direct drinking package, quickly degassing the direct drinking package orange juice by an ultrasonic vacuum synchronous degassing and nitrogen filling device, and then synchronously filling nitrogen above the liquid level.

The ultrasonic vacuum synchronous degassing and nitrogen filling device comprises an ultrasonic vacuum structure and a nitrogen filling structure, the straightly-drunk packaged orange juice is quickly degassed through the ultrasonic vacuum structure, an ultrasonic probe is arranged in the ultrasonic vacuum structure, the ultrasonic probe is beneficial to quick degassing and has a moderate sterilization effect, and the vacuumizing is beneficial to quickly removing air in the package; and monitoring the dissolved oxygen content of the orange juice after the direct drinking package is vacuumized, and then synchronously filling nitrogen through a nitrogen filling structure to finally ensure that the dissolved oxygen value in the direct drinking package is not higher than 1 mg/L.

The ultrasonic vacuum structure comprises two functions of transmitting ultrasonic waves and vacuumizing, and rapid degassing can be realized under the synchronous action. Reducing the dissolved oxygen of the orange juice in the direct drinking package to below 1mg/L within 1-3s, so that the pressure in the direct drinking package reaches 5-10 kp. Then filling nitrogen, wherein the filled nitrogen can be liquid nitrogen or nitrogen, preferably, the liquid nitrogen is filled into the container to be immediately converted into gaseous nitrogen after being dripped at room temperature, and the filling is convenient. The method is carried out at normal pressure and room temperature. The drink-through package may be, but is not limited to, a glass bottle, a plastic bottle, a multi-material mixing roof box, and the like. The sterilized orange juice can be stored in a large tank at a low temperature, and then secondary degassing and sterilization filling are carried out by an ultrasonic vacuum synchronous degassing and nitrogen charging device according to a sale plan until direct drinking packaging is carried out.

The utility model discloses a synchronous degasser in supersound vacuum can realize quick degasification through ultrasonic wave and vacuum condition synchronization, and its principle is propagated the orange juice by supersonic generator through ultrasonic probe. Ultrasonic waves are radiated forward at sparse and dense intervals in orange juice to make liquid flow to generate tens of thousands of micro-bubbles with the diameter of 50-500 mu m, and the micro-bubbles in the liquid vibrate under the action of a sound field. The bubbles are formed and grow in a negative pressure area where the ultrasonic waves longitudinally propagate, and in a positive pressure area, when the sound pressure reaches a certain value, the bubbles rapidly increase, or burst out of the liquid level or are suddenly closed and broken to generate cavitation. The sterilization efficacy of ultrasonic waves is mainly caused by the cavitation generated by the ultrasonic waves. During ultrasonic treatment, when high-intensity ultrasonic waves propagate in a liquid medium, longitudinal waves are generated, so that regions alternately compressed and expanded are generated, and the regions with changed pressure are easy to cause a cavitation phenomenon and form micro bubble nuclei in the medium. At the moment of adiabatic shrinkage and collapse, the micro bubble nucleus internally presents high temperature above 5000 ℃ and pressure of 50000kPa, thereby killing some bacteria in the liquid, inactivating viruses and even destroying the cell walls of some microorganisms with smaller volume.

S105: and packaging the direct drinking filled with nitrogen quickly. Rapid encapsulation, extremely low dissolved oxygen content and nitrogen gas filling are of great importance for the organoleptic quality assurance during storage and distribution of orange juice end products.

The utility model also relates to an ultrasonic vacuum synchronous degassing and nitrogen-filling orange juice filling line, which comprises an orange cleaning device, a juicing device, a blending device, a degassing device, a sterilizing device, a large-tank storage device, a filling device and the ultrasonic vacuum synchronous degassing and nitrogen-filling device and a sealing cover device which are arranged in sequence; the cleaning device is connected with the juicing device through a conveying belt, the juicing device, the blending device, the degassing device, the sterilizing device, the large-tank storage device and the filling device are connected through conveying pipelines, and the ultrasonic vacuum synchronous degassing and nitrogen filling device is respectively connected with the canning device and the capping device through the conveying belt; the belt cleaning device conveys raw and other materials through the conveyer belt conveying and squeezes the juice in squeezing the juice device, orange juice after squeezing the juice is carried the blending device in and is become the orange juice of quality homogeneous, orange juice after the blending is carried degasification device degasification, the orange juice after degasification is carried sterilizing equipment to disinfect, orange juice after disinfecting is carried in the filling device or is carried to the big jar of storage device and preserves after cooling, the orange juice after disinfecting and cooling or according to the production sales plan from the big jar of storage device take out is carried to the straight drink packing cooperation of filling device and a plurality of conveying and is filled the orange juice to directly drinking the packing in, it cooperatees and degasses and fills the nitrogen to directly drink the packing through the synchronous degasification of supersound vacuum and fills the nitrogen device of directly drinking the packing of orange juice with filling, the direct drink packing is sealed to the closing cap device. Orange juice is carried by the pipeline before the filling, and the conversion of processing link is all carried out on the conveyer belt to the packing of directly drinking the filling. The ultrasonic probe in the ultrasonic vacuum synchronous degassing and nitrogen filling device has two functions of sending ultrasonic waves and vacuumizing by a vacuum pump, the synchronous action can realize quick degassing, and the ultrasonic waves mainly have the main functions of assisting quick degassing and proper sterilization.

Further, the orange juice extractor further comprises a grading device for sorting the washed sweet oranges, and the grading device is connected between the washing device and the juice extracting device through a conveying belt. Through the arrangement of the grading device, unqualified and defective juicing raw materials can be effectively removed, the qualification rate of final fruit juice is ensured, and the quality of final products is improved.

Further, the juice extractor also comprises a refining device connected between the juice extractor and the blending device through a conveying pipeline, and solid matters such as pulp, pomace and the like can be removed through the refining device, so that the uniformity of orange juice is improved, and the sensory quality of the orange juice is ensured.

The utility model discloses a principle of filling line does: cleaning sweet orange raw materials, squeezing, refining, and blending; vacuum degassing and pasteurizing the blended orange juice; cooling the sterilized orange juice to a proper filling temperature, and injecting the cooled orange juice into the sterilized direct drinking package; rapidly degassing the directly-drunk packaged orange juice by an ultrasonic vacuum device, monitoring the dissolved oxygen content, synchronously filling nitrogen, and rapidly packaging.

The utility model discloses a synchronous quick degasification of supersound vacuum fills nitrogen device and orange juice filling line, this technique can realize the instantaneous degasification of production line and carry out the nitrogen filling closing cap, and the product prolongs its shelf life to more than 120 days under the assurance sense organ quality prerequisite behind the closing cap, has prolonged more than 2-3 times than present majority product shelf life (30-45 days), has reduced its warehousing and transportation cost of selling by a wide margin. The technology has revolutionary significance for orange juice, fruit and vegetable juice, and particularly for quality control in the storage, transportation and sale processes of NFC fruit and vegetable juice products which are popular at present.

Drawings

The contents of the description and the references in the drawings are briefly described as follows:

FIG. 1 is a process flow diagram of the present invention;

FIG. 2 is a diagram showing the state of the ultrasonic vacuum synchronous rapid degassing and nitrogen-filling device of the present invention in cooperation with a direct drinking package;

FIG. 3 is an enlarged view taken at A in FIG. 2;

FIG. 4 is a schematic structural view of the ultrasonic vacuum synchronous degassing and nitrogen-filling line for orange juice

FIG. 5 is a line graph showing the variation of the dissolved oxygen content in orange juice of the experimental group;

FIG. 6 is a line graph showing the change in dissolved oxygen content in orange juice of the control group;

FIG. 7 is a bar graph of sensory index overall scores for the test group orange juice samples;

FIG. 8 is a bar graph of sensory index overall scores for control orange juice samples;

FIG. 9 is a line graph showing the change in Δ E during color assessment of test orange juice groups;

FIG. 10 is a line graph showing the change in Δ E during a color assessment of a control orange juice;

FIG. 11 is a line graph showing the variation of Vc content during storage of orange juice from the experimental group;

FIG. 12 is a line graph showing the change of Vc content in the storage of control orange juice;

in the figure: 1. a mechanical arm; 2. a degassing joint; 3. vacuumizing a tube; 4-1, a horn; 4-2 ultrasonic tool head; 5. a pressure sensor; 6. a dissolved oxygen probe; 7. injecting nitrogen into the tube; 8. a PLC controller; 9. a vacuum pump; 10. a liquid nitrogen pump; 11. a sleeve; 12. a liquid nitrogen tank; 13. a rubber pad; 14. direct drinking packaging; 15. an ultrasonic generator.

Detailed Description

The invention will be further elucidated with reference to the following non-limiting embodiment in which the drawing is combined. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Examples

As shown in FIGS. 1, 2, 3 and 4, the same-season Changeye orange from the same producing area was picked as the raw material used in this example. Glass Bottle (BL) package, Polypropylene (PP) plastic bottle package, Polyethylene (PE) retort pouch package (oxygen permeability: BL < PP < PE) orange juice) were prepared by the following steps, respectively.

As shown in figures 1 and 4, the procedure for preparing the above packaged orange juice is as follows:

s1, picking a plurality of longleaf oranges, and cleaning the longleaf oranges through a cleaning device to remove dirt on the epidermis and agricultural residues;

s2, conveying the cleaned longifola oranges to a grading device through a belt for grading, removing unqualified and defective longifola oranges through the grading device, and only keeping the longifola oranges of the same specification for preparing orange juice;

s3, conveying the longleaf oranges retained by the grading device into a juicing device, and juicing by the juicing device, wherein the juicing machine adopted in the embodiment is JBT whole fruit juicing, and juicing by the juicing machine to remove relatively large impurities such as peel and kernel and obtain primary coarse orange juice;

s4, conveying the coarse orange juice prepared in the step S3 into a refining device through a pipeline and a pump for refining, wherein the refining device adopts a rotary filtering refiner to remove fruit residues or fruit pulp;

s5, conveying the orange juice prepared by the rotary filtering refiner into a blending device through a pump and a conveying pipeline, and blending the orange juice conveyed by the refining device in the blending device to ensure that the sugar-acid ratio of the orange juice is between 17 and 20 because the sugar degrees and acidity of the juice squeezed from different batches of raw materials are different;

s6, conveying the orange juice prepared in the step S6 to a degassing device through a pump and a conveying pipeline for degassing, and degassing in a large batch through the degassing device to ensure that the oxygen content of the orange juice is low before high-temperature sterilization in the subsequent step and the quality of the orange juice is not easy to deteriorate in the high-temperature sterilization process;

s7, conveying the degassed orange juice to a sterilization device for sterilization, wherein the sterilization adopts a pasteurization mode of keeping the temperature at 93 +/-2 ℃ for 15-30S;

s8, conveying the sterilized orange juice obtained in the step S7 to a large-tank storage device for cooling and storage, and keeping the storage temperature at 0-4 ℃;

s9: injecting the orange juice cooled and stored in the step S8 into a sterilized direct drinking package through a filling device, rapidly degassing the orange juice packaged directly drinking package through an ultrasonic vacuum synchronous degassing and nitrogen filling device, and then synchronously filling liquid nitrogen; the straight drink packing of this step adopts BL packing respectively, PP packing, and the PE packing is filled, before the canning, still need wash through straight drink packing belt cleaning device to above packing, then carry the filling in the filling device through the conveyer belt, then the orange juice that the rethread conveyer belt will above packing carries the synchronous degasification of supersound vacuum and fills the nitrogen device and degasify and fill the nitrogen. Finally, the direct drinking package is vacuumized to 5-10KPa, and the dissolved oxygen content of the orange juice is below 1 mg/L.

The ultrasonic vacuum synchronous degassing and nitrogen-filling device of the embodiment is shown in figures 2 and 3 and comprises a mechanical arm which moves up and down, a degassing joint which is arranged below the mechanical arm and is used for sealing an opening of a direct drinking package, vacuum pipes which are respectively arranged on the degassing joint and are used for extracting gas in the direct drinking package, an ultrasonic probe which is inserted below the liquid level of the direct drinking package, a pressure sensor for detecting the pressure of a non-liquid part in the direct drinking package, a dissolved oxygen detection probe which is inserted below the liquid level of the direct drinking package and is used for detecting the oxygen content of liquid, a nitrogen injection pipe for injecting nitrogen into the direct drinking package, an ultrasonic generator which is connected with the ultrasonic probe and a PLC (programmable; when the ultrasonic vacuum synchronous degassing and nitrogen-filling device is matched with an opening of a direct drinking package for use, both the air suction port of the vacuum-pumping pipe and the nitrogen outlet of the nitrogen-filling pipe are higher than the liquid level in the direct drinking package; one end of the vacuum pumping pipe is connected with a vacuum pump, the nitrogen injection pipe is connected with a liquid nitrogen tank, and a liquid nitrogen pump for conveying liquid nitrogen into the direct drinking package is arranged on the nitrogen injection pipe; and the PLC is respectively and electrically connected with the pressure sensor, the dissolved oxygen probe, the vacuum pump, the liquid nitrogen pump and the ultrasonic generator.

The bottom of the degassing joint is also provided with a rubber pad for sealing an opening of the direct drinking package; the ultrasonic probe, the dissolved oxygen probe, the pressure sensor, the vacuumizing tube and the nitrogen injection tube are all sleeved in the degassing joint and the rubber pad. The ultrasonic probe comprises an amplitude transformer and an ultrasonic tool head inserted into the liquid level of the direct drinking package, the ultrasonic tool head is fixedly connected to the amplitude transformer, and the amplitude transformer is connected with an ultrasonic generator. The ultrasonic tool head penetrates through the degassing connector and is inserted below the liquid level of the direct drinking package. The degassing device further comprises a sleeve fixedly arranged above the degassing joint and used for regulating various pipelines and cables, and the upper end of the sleeve is fixedly connected with the mechanical arm.

The PLC controller of the embodiment adopts a brand of 'easily controlled king', the model is EP070C, and the CPU is a touch screen type controller of a 32-bit ARM processor; the ultrasonic generator adopts a 'THD' brand, and the model is THD-T1; the ultrasonic probe comprises an amplitude transformer and an ultrasonic tool head, wherein the amplitude transformer adopts a product of model SM-1000C manufactured by Nanjing Shunhima instruments and equipment Limited, and the ultrasonic tool head adopts a product of model 630-0423 manufactured by SONICS & MATERIALS, INC.; the pressure sensor is a sensor with the brand of MEACON, the model number of MIK-P300 and the range of 0-1 MPA; the dissolved oxygen probe is a product of DO-166-NPS-SXS manufactured by Lazarresearch Laboratories, Inc; the vacuum pump is made of Hailin brand, D15S model; the liquid nitrogen pump is a BSD-LN electric turbine liquid nitrogen pump manufactured by Betserd instruments and technology (Beijing) Limited. The mechanical arm of the embodiment can adopt the cylinder to drive the piston rod, so as to drive the degassing joint to move up and down; or directly using a mechanical arm to drive the degassing joint to move up and down.

The utility model discloses a relevant procedure such as processing, sending and receiving such as PLC controller, supersonic generator, ultrasonic transducer, pressure sensor, dissolved oxygen probe, vacuum pump, liquid nitrogen pump, arm are technical personnel's in the field routine technique selection, belong to prior art, do not need to pay out the technical scheme that creative work just can reachd, do not belong to the utility model discloses the object of protection.

S10: and (4) conveying the various packaged orange juice subjected to degassing and nitrogen filling in the step S9 to a capping device through a conveyor belt, and quickly packaging the direct drinking package to obtain BL packaged orange juice, PP packaged orange juice and PE packaged orange juice respectively.

The orange juice sold in the existing market is different from the making mode of the embodiment in that:

the existing orange juice is not prepared in the step S9 in the embodiment, but the orange juice stored in the large-tank storage device in the step S8 is directly conveyed to a filling device to fill BL packages, PP packages and PE packages respectively, and the directly-drinking packages after filling are directly conveyed to a capping device to be capped. In this way, commercially available BL, PP, PE packed orange juice were obtained separately.

Taking the orange juice packaged by BL, PP and PE in the embodiment as an experimental group 1, an experimental group 2 and an experimental group 3 respectively, and taking the orange juice packaged by BL, PP and PE sold in the market as a control group 1, a control group 2 and a control group 3 respectively; then, the experimental group 1, the experimental group 2, the experimental group 3, the control group 1, the control group 2 and the control group 3 are subjected to experimental comparative analysis.

The experimental and comparative analyses were as follows:

first, determination of Dissolved Oxygen (DO) content

The invasive measurement was performed using an S9 oxygen dissolution apparatus, the oxygen dissolution apparatus was calibrated at two points before the measurement, and the samples of the above experimental group 1, experimental group 2, experimental group 3, control group 1, control group 2, and control group 3 were measured in a nitrogen atmosphere after the calibration, and the oxygen dissolution apparatus was slightly shaken at the time of the measurement, and the measurement was performed 5 times on average for each sample.

The excessive content of dissolved oxygen in the orange juice can not only cause the oxidative degradation of nutrient substances, but also help the growth and propagation of aerobic bacteria and accelerate the deterioration of the flavor and the nutritional quality of the orange juice. As can be seen from fig. 5 and 6, during storage, the dissolved oxygen content in the PE package increased the most, followed by the PP package and the lowest in the BL package, which is consistent with the oxygen permeability (PE > PP > BL) of the three packaging materials. The dissolved oxygen content in the experimental group was generally lower than that in the control group, and the rising speed was relatively slow. The whole trend of the dissolved oxygen content in the orange juice packaged by the experimental group 1 and the control group 1BL is stable, and the content is basically maintained to be about 0.5mg/L because the oxygen permeability of the BL package is low, and the available dissolved oxygen content is limited, so that the oxidation reaction is extremely slow in the whole storage process, and the consumed dissolved oxygen and the permeated oxygen dissolved in the orange juice keep dynamic balance. As shown in fig. 5, the dissolved oxygen content in the orange juice of the PP-packaged experimental group 2 and the PE-packaged experimental group 3 was lower within 10 days than that of the control group 2 and the control group 3 shown in fig. 6, and the dissolved oxygen content in the experimental group 2 and the experimental group 3 was gradually increased within 10-120 days, which is more beneficial to the preservation of the orange juice; the content of dissolved oxygen in the control group 2 and the control group 3 sharply increases within 10 days, approaches to the peak value, and does not change much within 10-120 days, which is not beneficial to preservation compared with the experimental group.

Second, sensory Overall evaluation

Sensory panel consisting of 4 men and 4 women, before the start of the assessment, referred to GB/T16291.2-2010 "sensory analysis: general guide rules of selection, training and management evaluators: section 2: expert evaluators were required to train panelists and to be familiar with the sensory attributes of standard orange juice. When the evaluation is carried out, all members do not contact and exchange, and the evaluation interval between two adjacent samples is 5 min. The sensory evaluation indexes are color, smell, taste, state and impurities, 10 points are adopted for evaluation, 8 to 10 points are taken as standards, 5 to 7 points are qualified, and 0 to 4 points are not qualified. The overall evaluation result is calculated by 100 points, the weighting coefficients of each index are color (20%), smell (30%), taste (30%) and state and impurity (20%), and the total point of less than 60 points is regarded as that the orange juice sample is not accepted.

The sensory evaluation is the most intuitive evaluation performed on the product, and the degree of acceptance of the product by consumers is directly determined by the level of the sensory score. Figure 7 shows the overall ratings of the panelists to the sensory attributes of the three packaged orange juice samples of the experimental group, and figure 7 shows the overall ratings of the panelists to the sensory attributes of the three packaged orange juice samples of the control group. As can be seen by comparing FIG. 7 with FIG. 8 (experimental and control groups), the BL-packaged orange juice samples in the experimental group received up to 120 days at 4 ℃ and the PP and PE-packaged orange juice samples received only 60 days and 30 days at the same temperature. The BL-packaged orange juice samples in the control group received 60 days at 4 ℃ and the PP and PE-packaged orange juice samples received only 15 days at the same temperature. The utility model discloses the technique can obviously prolong the storage time of three kinds of packings under the prerequisite of guaranteeing that orange juice sense organ quality ability is being accepted by the consumption.

Third, determination of color and luster

Selecting a light source C-02 after the Color i5 colorimeter is started, setting values of test parameters L, a and b, correcting by using a black-and-white plate, measuring each sample in parallel for 5 times after the correction is finished, and calculating a delta E value and a BI value. The calculation formula for Δ E and BI is as follows:

where Δ E, the color difference between the sample and the blank; l, luminance; a, red-green value; b, yellow-blue value; l0, a0, b0, measurement of blank control samples.

Color is the most intuitive and important factor affecting consumer desire to purchase. The color difference meter is adopted to identify the color of the orange juice, which is beneficial to objectively analyzing the color change of the orange juice and has theoretical reference value. Δ E represents a theoretical reference value for the overall color change of orange juice, and it is generally accepted that a color change is visible to the naked eye when 2 ≦ Δ E ≦ 4, but is acceptable under certain circumstances; Δ E ≧ 4 is regarded as the chromatic aberration is unacceptably severe. As can be seen in FIG. 9, the delta E values for the three packaged orange juices from the experimental group varied significantly more gradually than the control group as shown in FIG. 10; wherein the delta E value for orange juice in the test group 1BL package was only 3.81. + -. 0.014 at 120 days, the color score of the orange juice sample was also higher than 6 on the sensory index score and still within the acceptable range, while the delta E value for orange juice in the test group 2PP package and the test group 3PE package was >4 at 60 days of storage; whereas the delta E of BL packaged orange juice in the control group was close to 4 in 30 days, the orange juice in PP and PE was already over 4 in less than 20 days of storage. Therefore, the utility model discloses an it is better that its storage quality of the orange juice of the synchronous degasser of supersound vacuum.

Determination of Tetraascorbic acid (Vc)

The measurement was carried out according to the third method of the national standard, the 2, 6-dichloroindophenol method, and the results were expressed in milligrams of L-ascorbic acid per 100g of orange juice (mg/100 g).

Vc is one of the important nutritional components in orange juice, but is chemically unstable and extremely sensitive to light, heat and oxygen. Under the aerobic condition, Vc is aerobically degraded to form dehydroascorbic acid, and finally reduced ketone is generated after a series of reactions, and the reduced ketone participates in the Maillard reaction to generate a black brown substance; vc also degrades under anaerobic conditions, but at a slower rate than aerobic degradation. As shown in fig. 11 and 12, the Vc content generally decreased, but the experiment group shown in fig. 11 was significantly slower than the control group shown in fig. 12. The BL package with low oxygen permeability of the experimental group has low dissolved oxygen content and has good protection effect on Vc of orange juice; experimental group 2 and experimental group 3 also had good Vc protection relative to control group 2 and control group 3.

Can know through above experimental analysis, will the utility model discloses the orange juice is through degasification nitrogen filling after-storage, and the dissolved oxygen content of monitoring different packing orange juice is in the normal atmospheric temperature storage in-process changes, and through analysis discovery such as sensory evaluation and physical and chemical index, the dissolved oxygen content of orange juice maintains lower level along with the lapse of time in three kinds of packing always, and nutrients such as Vc of orange juice obtain better reservation. Under the condition of normal-temperature dark storage, the acceptance time of sensory evaluation reaches 60 days, and the normal-temperature storage time of the orange juice is effectively prolonged. Compared with the prior art, through the utility model discloses an orange juice supersound vacuum is synchronous degasification fills nitrogen processing method, device and filling line can effectively reduce the shelf life of orange juice storage, transportation and sale cost and extension orange juice.

The utility model discloses a synchronous degasification of supersound vacuum fills nitrogen device and filling line mainly used orange juice's production and processing also can be used to the processing of other fruit vegetables juice, and its concrete equipment parameter can be adjusted according to particular case in the processing of other fruit vegetables juice.

The above examples are to be understood as merely illustrative of the present invention and not as limiting the scope of the invention. After reading the description of the present invention, the skilled person can make various changes or modifications to the present invention, and these equivalent changes and modifications also fall within the scope of the present invention defined by the claims.

Claims (8)

1. The ultrasonic vacuum synchronous degassing and nitrogen-filling device is characterized by comprising a mechanical arm which moves up and down, a degassing joint which is arranged below the mechanical arm and is used for sealing an opening of a direct drinking package, a vacuum-pumping pipe which is respectively arranged on the degassing joint and is used for pumping gas in the direct drinking package, an ultrasonic probe which is inserted below the liquid level of the direct drinking package, a pressure sensor for detecting the pressure of a non-liquid part in the direct drinking package, a dissolved oxygen detection probe which is inserted below the liquid level of the direct drinking package and is used for detecting the oxygen content of liquid, a nitrogen-filling pipe for filling nitrogen into the direct drinking package, an ultrasonic generator which is connected with the ultrasonic probe and a PLC (programmable; when the ultrasonic vacuum synchronous degassing and nitrogen-filling device is matched with an opening of a direct drinking package for use, both the air suction port of the vacuum-pumping pipe and the nitrogen outlet of the nitrogen-filling pipe are higher than the liquid level in the direct drinking package; one end of the vacuum pumping pipe is connected with a vacuum pump, the nitrogen injection pipe is connected with a nitrogen storage device, and a nitrogen injection pump for conveying nitrogen into the direct drinking package is arranged on the nitrogen injection pipe; and the PLC is respectively and electrically connected with the pressure sensor, the dissolved oxygen probe, the vacuum pump, the nitrogen injection pump and the ultrasonic generator.

2. The ultrasonic vacuum synchronous degassing and nitrogen-charging device of claim 1, wherein the bottom of the degassing joint is further provided with a rubber pad for sealing the opening of the direct-drinking package; the ultrasonic probe, the dissolved oxygen probe, the pressure sensor, the vacuumizing tube and the nitrogen injection tube are all sleeved in the degassing joint and the rubber pad.

3. The ultrasonic vacuum synchronous degassing and nitrogen-charging device of claim 1, wherein the ultrasonic probe comprises an amplitude transformer and an ultrasonic tool head inserted under the surface of the direct drinking package liquid, the ultrasonic tool head is fixedly connected to the amplitude transformer, and the amplitude transformer is connected with an ultrasonic generator.

4. The ultrasonic vacuum synchronous degassing and nitrogen-charging device of claim 3, wherein said horn is disposed above the degassing connector, and said ultrasonic tool head is inserted through the degassing connector under the liquid surface of the drink-through package.

5. The ultrasonic vacuum synchronous degassing and nitrogen-charging device of claim 1, further comprising a sleeve fixedly arranged above the degassing joint for regulating various pipelines and cables, and the upper end of the sleeve is fixedly connected with the mechanical arm.

6. The ultrasonic vacuum synchronous degassing and nitrogen-charging device of claim 1, wherein the nitrogen storage device is a liquid nitrogen tank, the nitrogen injection pump is a low temperature-resistant liquid nitrogen pump, and the nitrogen injection pipe is a pressure-resistant and freeze-resistant PVC nitrogen injection pipe.

7. An ultrasonic vacuum synchronous degassing and nitrogen-charging orange juice filling line is characterized by comprising an orange fruit cleaning device, a juicing device, a blending device, a degassing device, a sterilizing device, a large tank storage device, a filling device, and the ultrasonic vacuum synchronous degassing and nitrogen-charging device and a sealing device which are arranged in sequence, wherein the ultrasonic vacuum synchronous degassing and nitrogen-charging device and the sealing device are arranged in any one of claims 1 to 6; the cleaning device is connected with the juicing device through a conveying belt, the juicing device, the blending device, the degassing device, the sterilizing device, the large-tank storage device and the filling device are connected through conveying pipelines, and the ultrasonic vacuum synchronous degassing and nitrogen filling device is respectively connected with the canning device and the capping device through the conveying belt; the belt cleaning device conveys raw and other materials through the conveyer belt and squeezes juice in squeezing the juice device, the orange juice after squeezing the juice is carried the blending device in and is become the orange juice of quality homogeneous, the orange juice after the blending is carried degasification device degasification, the orange juice after degasification is carried sterilizing equipment to disinfect, the orange juice after disinfecting is carried in the filling device, filling device and the straight drink packing cooperation of a plurality of conveyances are filled the orange juice to directly drinking the packing in, fill nitrogen device and the straight drink packing of filling the orange juice through the synchronous degasification of supersound vacuum and cooperate and degasify and fill nitrogen gas to directly drinking the packing, the rethread closing cap device seals directly drinking the packing.

8. The ultrasonic vacuum synchronized degassing, nitrogen-filled orange juice filling line of claim 7, further comprising a classifying means for classifying the washed oranges and a refining means connected between the juicing means and the blending means by a pipe, said classifying means being connected between the washing means and the juicing means by a conveyor belt.

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