CN108170178A - A kind of pressure servo control device and its method with packaged food sterilization - Google Patents
A kind of pressure servo control device and its method with packaged food sterilization Download PDFInfo
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- CN108170178A CN108170178A CN201810086446.9A CN201810086446A CN108170178A CN 108170178 A CN108170178 A CN 108170178A CN 201810086446 A CN201810086446 A CN 201810086446A CN 108170178 A CN108170178 A CN 108170178A
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- Prior art keywords
- retort
- food
- sterilization
- pressure
- packaged food
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
- G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
- G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
- G05D16/2026—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means with a plurality of throttling means
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
Abstract
The invention discloses provide a kind of the pressure servo control device and its method of packaged food sterilization.It is that displacement sensor is installed in retort, the switch board for being equipped with PLC and display screen that installation is connect with displacement sensor conducting wire outside retort, it calculates and stores by the detection data to disinfecting food change information in retort, intake and exhaust in control retort in time, effectively control packaged food packs deformation in sterilization process or bursts the generation of problem, prevents package failure from causing the wasting of resources or loss.The configuration of the present invention is simple, manufacture is easy, safe and practical.The pressure control servo data that can effectively solve Traditional Packing food sterilization are difficult to grasp, waste of time and resource problem.It can be widely applied to food sterilization technical field.
Description
Technical field：
The present invention relates to food sterilization technical field, more particularly to expanding with heat and contract with cold in a kind of band packaged food sterilization process
The pressure servo control device and its method of variation.
Background technology：
Food sterilization is the process for heating, keeping the temperature, cooling down in retort.Packaged food is in heating process, food
Product expand when heated or packaging are caused to deform or burst.To prevent package failure, need plus a certain amount of compressed air,
Make its pressure with package interior consistent, offset the expansion of package interior, so as to reach the intact of food packaging.If packaging is outer
There are many pressure that the pressure in portion is more than package interior, will also result in the damage of packaging, such as crush, damage by pressure.Packaged food with
The slowly raising of temperature, internal pressure also can be increased slowly, it is necessary to which external pressure is with the pressure liter of package interior
It is high and slowly change, to inhibit its expansion.
With heating on the contrary, the temperature of outer package slowly declines, if the pressure of outer package is not when packaged food cools down
Reduction will result in packaging and damage by pressure, so while temperature declines, the pressure of outer package also will slowly decline, and reach in packaging
External pressure balances each other.
Traditional food sterilization pressure servo control method could be obtained by experience or the experiment in retort repeatedly
Go out.Sometimes for the experiment that one group of rational pressure process is looked for need tens times even up to a hundred times, time and resource are wasted.
Invention content：
The purpose of the present invention is asked aiming at food sterilization in conventional antimicrobial pot present on pressure servo control method
Topic, and a kind of pressure servo control device sterilized with packaged food and its method are provided.It is that displacement is installed to pass in retort
Sensor, the switch board for being equipped with PLC and display screen that installation is connect with displacement sensor conducting wire outside retort, by retort
The detection data of interior disinfecting food information change calculates and storage, controls the intake and exhaust in retort in time, and control food is killing
Generation that is yielding or bursting problem is packed during bacterium, prevents package failure from causing the wasting of resources or loss.
To realize the above-mentioned technical purpose, the technical solution adopted by the present invention is that：A kind of pressure with packaged food sterilization is watched
Take control device and its method, sterilization pressure Servocontrol device include retort, displacement sensor, air bleeding valve, aeration valve,
Sealing device and switch board, technical characteristic are：
Sterilizing disk is equipped in the retort, its exterior is equipped with air bleeding valve, the aeration valves connected with it by rear pipeline；
Side in the retort is equipped with the displacement sensor fixed frame for being secured to connection；
Displacement sensor is equipped between the sterilizing disk and displacement sensor fixed frame, displacement sensor is fixedly mounted on
The lower section of displacement sensor fixed frame is simultaneously contacted with packaged food；
The external side of the retort is equipped with switch board and sealing device connected to it, and switch board is equipped with PLC
With electronic display；
Institute's displacement sensors are connect by conducting wire and sealing device with PLC, and PLC is connected with display screen；
Its operation principle：
Band packaged food can expand during sterilization when heated, and when cooling can shrink.In each stage, displacement is used
Sensor directly detects the variation of product, and the data of detection are accessed PLC, then the calculating by PLC by conducting wire, control is gone to mend
The intake and exhaust of air valve and air bleeding valve.Data can lead to the variation that touch screen can intuitively see numerical value very much, that is, packaging food
The practical variation of product appearance.
A kind of pressure servo control device and its method with packaged food sterilization, food sterilization pressure servo controlling party
Method is：1st, during the food of packaging is heated in retort, kept the temperature, cools down, pacified according to food top in retort
The displacement sensor of dress detects the concave-convex variation in food packaging；
The 2nd, the concave-convex variable signal of the food packaging detected is accessed to the PLC being equipped in switch board, then by PLC according to food
The change information that product packaging bears pressure controls the intake and exhaust of aeration valve, air bleeding valve connected with retort in time, so as to control
Pressure outside food packaging, forms closed-loop control in retort；
3rd, packaged food is in sterilization process, can be with by being mounted on the electronic data of the electronic display on switch board
The variation of intuitive discovery packing material, controls intake and exhaust to realize pressure servo control in time, while obtains simultaneously pressure store servo control
Process data processed；
4th, pressure servo control process data is stored in switch board, when next equivalent food products are sterilized, directly uses this
Group process for sterilizing data.
Its operation principle：
Band packaged food sterilizes early period, and food and displacement sensor are put well, are adjusted to the state of 0.When food packaging is swollen
Negative value is shown as when swollen, such as -1.0mm.Positive value, such as 0.5mm are shown when food packaging is shunk.In food sterilization, touch screen
Upper to can see, when showing negative value, it is the state in expansion to illustrate food packaging, opens aeration valve and adds in compressed air, until aobvious
Registration position is 0.When showing positive value, illustrate the state that food packaging is compressed, external compressed air is excessive, the air valve that begins to rehearse row
Except extra air, until display numerical value is 0.This state is always maintained in entire sterilization process, until terminating to sterilization.
Formula is controlled by generating a set of pressure according to the data of record after experiment, it is automatic to store.Such as temperature corresponds to phase
Deng pressure.When next time carries out same package food sterilization, directly using the technique, the process of sterilization can be just completed.
Due to taking above-mentioned technical proposal, the present invention installs displacement sensor in retort, outside retort installation with
The switch board for being equipped with PLC and display screen of displacement sensor conducting wire connection, by disinfecting food change information in retort
Detection data calculates and storage, controls the intake and exhaust in retort in time, effectively food is controlled to pack deformation in sterilization process
Or the generation of problem is burst, prevent package failure from causing the wasting of resources or loss.The configuration of the present invention is simple, manufacture is easy, peace
It is complete practical.It can effectively solve that conventional belt packaged food sterilization pressure control servo data is difficult to grasp, waste of time and resource are asked
Topic.It can be widely applied to food sterilization technical field.
Description of the drawings：
Fig. 1 is overall structure diagram of the present invention：
In figure：1 retort, 2 sterilizing disk, 3 food, 4 displacement sensor fixed frame, 5 displacement sensor, 6 conducting wire 7 seals
11 display screens of device 8 aeration valve, 9 air bleeding valve 10PLC, 12 switch board
Specific embodiment：
The invention will be further described below in conjunction with the accompanying drawings：Preferred embodiment described herein is merely to illustrate reconciliation
The present invention is released, is not intended to limit the present invention.
As shown in Figure 1, a kind of pressure servo control device with packaged food sterilization and its method, device include：It kills
Bacterium pot 1, sterilizing disk 2, displacement sensor fixed frame 4, displacement sensor 5, conducting wire 6, sealing device 7, aeration valve 8, air bleeding valve 9,
PLC10, display screen 11, switch board 12.Food 3 is in sterilizing disk 2, and for sterilizing disk 2 in retort 1, displacement sensor 5 is solid
Dingan County is in contact on displacement sensor fixed frame 4 with food 3, is able to detect that the slight change of food 3, and displacement passes
4 fixed placement of sensor fixed frame is in retort 1, and displacement sensor 5 is by conducting wire 6, across the sealing being welded in retort 1
Device 7 is connect with PLC10, and PLC10 is connected with display screen 11, and PLC10 and display screen 11 are installed on switch board 12, aeration valve 8
Retort 1 is connected by rear pipeline with air bleeding valve 9, for being vented to retort 1 and tonifying Qi.
Its packaged food sterilization pressure servo control method be：Packaged food 3 is put into sterilizing disk 2, puts into sterilization
It in pot 1 when being sterilized, can be expanded when packaged food 3 is heated, when cooling can shrink.In entire sterilization process, with passing through position
4 fixed displacement sensor 5 of displacement sensor fixed frame directly detects the change in shape of packaged food 3, and the data of detection are passed through
Conducting wire 6 accesses PLC10, then the calculating by PLC10, removes control aeration valve 8 and air bleeding valve 9.When displacement sensor 5 detects packet
It when filling the expansion of food 3, by opening aeration valve 8, gives and air is added in retort 1, until displacement sensor 5 restores initial value.When
When displacement sensor 5 detects that packaged food 3 is shunk, by opening air bleeding valve 9, to discharge air in retort 1, until displacement
Sensor 5 restores initial value.The variation of numerical value, that is, the practical change of packaged food appearance can be seen by display screen 12
Change.
Packaged food sterilizes early period, and packaged food and displacement sensor are put well, are adjusted to the state of 0.When product expands
When be shown as negative value, such as -1.0mm.Positive value, such as 0.5mm are shown when packaged food is shunk.In food sterilization, on touch screen
It can be seen that when showing negative value, it is the state in expansion to illustrate packaged food, opens aeration valve and add in compressed air, until display
Numerical digit is 0.When showing positive value, illustrate the state that packaged food is compressed, external compressed air is excessive, and the air valve that begins to rehearse excludes
Extra air, until display numerical value is 0.This state is always maintained in entire sterilization process, until terminating to sterilization.Pass through experiment
A set of pressure is generated according to the data of record afterwards and control formula, stored automatically to PLC.Such as the pressure of temperature correspondent equal.Under
During secondary progress same package food sterilization, directly using the technique, the process of sterilization can be just completed.
Embodiment 1：
Product：Horse mouthful meat iron flask head 20 minutes heating-up times of 121.0 DEG C of sterilization temperature, soaking time 30 minutes, cooling
25 minutes time, 30 DEG C of product initial temperature
Packaged food is vertically put into retort, displacement sensor is fixed on above iron flask, is adjusted to 0 state.It opens
Begin to sterilize, 121 DEG C are warming up to from 30 DEG C needs 20 minutes, and the temperature in this time in retort can slowly be warming up to 121 DEG C,
Packaged food is the process in heat absorption, and central temperature also can be increased slowly, after product center temperature reaches certain temperature, both ends
Lid can protrude, and displacement sensor is detected as negative value (as -0.5mm), and pressurization valve is opened at this time, adds in compressed air, directly
To the state that sensor is 0, pressurizing valve is closed.During heating, heat preservation, due to being heating process, outside packaged food
Portion's gas can also expand generation pressure, and when the central temperature heating of product is slow, the pressure outside packaged food can be higher than production
The center pressure of product, product are recessed state, and displacement sensor can be detected as positive value (such as 0.8mm) at this time, and pressure relief valve is opened,
Extra gas is discharged, until the state that sensor is 0.
During cooling, needing to be cooled to 30 DEG C from 121 DEG C needs 25 minutes, and cooling is exothermic process, when packaged food
When external temperature declines, the air of the outside of packaged food can also be shunk, and packaged food can be the state of protrusion, displacement sensor
Negative value is detected as, opens compressed air, supplements compressed air, until the state that sensor is 0.Temperature inside packaged food
It can decline, packaged food can be pushed down by external pressure at this time, and displacement sensor can detect that packaged food is fallen in, and displacement passes
Sensor is positive value (such as 0.5mm), and relief valve is opened, and discharges extra gas, until the state that sensor is 0.
Complete entire sterilization process, according to temperature and time, can with the temperature for going out corresponding pressure parameter, coordinating setting
Degree, time and the pressure obtained complete one group of rational process for sterilizing, automatically save one technique number of generation, directly adjust next time
Taking technique number can be done directly entire sterilization process.
Embodiment 2：
Product：15 minutes heating-up times of 121.0 DEG C of bean milk in soft package sterilization temperature, soaking time 30 minutes, temperature fall time
20 minutes 20 DEG C of product initial temperature
By the smooth top for being put into retort, displacement sensor right angle setting and packaged food of packaged food, it is adjusted to 0 shape
State.Start to sterilize, packaged food, which is warming up to 121 DEG C from 20 DEG C, needs 15 minutes, and the temperature in this time in retort can be slow
Slowly 121 DEG C are warming up to, packaged food is the process in heat absorption, and central temperature also can be increased slowly, and packaged food central temperature arrives
Up to after certain temperature, packaging bag expansion can slowly protrude, and displacement sensor is detected as negative value (as -0.5mm), at this time pressurizing valve
Door is opened, and adds in compressed air, until the state that sensor is 0, closes pressurizing valve.During heating, heat preservation, due to
It is heating process, packaged food extraneous gas can also expand generation pressure, when the central temperature heating of packaged food is slow, packet
Fill food outside pressure can be higher than packaged food center pressure, packaged food be recessed state, displacement sensor meeting at this time
Positive value (such as 0.8mm) is detected as, pressure relief valve is opened, and discharges extra gas, until the state that sensor is 0.
During cooling, needing to be cooled to 30 DEG C from 121 DEG C needs 20 minutes, and cooling is exothermic process, when packaged food
When external temperature declines, the air of the outside of packaged food can also be shunk, and packaged food can be the state of protrusion, displacement sensor
Negative value is detected as, opens compressed air, supplements compressed air, until the state that sensor is 0.Temperature inside packaged food
It can decline, packaged food can be pushed down by external pressure at this time, and displacement sensor can detect that product is fallen in, displacement sensor
For positive value (such as 0.3mm), relief valve is opened, and discharges extra gas, until the state that sensor is 0.
Complete entire sterilization process, according to temperature and time, can with the temperature for going out corresponding pressure parameter, coordinating setting
Degree, time and the pressure obtained complete one group of rational process for sterilizing, automatically save one technique number of generation, directly adjust next time
Taking technique number can be done directly entire sterilization process.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, although with reference to aforementioned reality
Example is applied the present invention is described in detail, it for those skilled in the art, still can be to previous embodiment
Recorded technical solution modifies or carries out equivalent replacement to which part technical characteristic.All spirit in the present invention
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (3)
1. a kind of pressure servo control device with packaged food sterilization and its method, sterilization pressure Servocontrol device include
Retort, displacement sensor, air bleeding valve, aeration valve and switch board, it is characterised in that：
Sterilizing disk is equipped in the retort, its exterior is equipped with the air bleeding valves and aeration valve connected with it by rear pipeline；
Side in the retort is equipped with the displacement sensor fixed frame for being secured to connection；
Displacement sensor is equipped between the sterilizing disk and displacement sensor fixed frame, displacement sensor is fixedly mounted on displacement
The lower section of fixing rack for sensor is simultaneously contacted with packaged food；
The external side of the retort is equipped with switch board sealing device connected to it, and switch board is equipped with PLC and electronics
Display screen.
2. a kind of pressure servo control device with packaged food sterilization and its method, feature exist according to claim 1
In：Institute's displacement sensors are connect by conducting wire and sealing device with PLC, and PLC is connected with display screen.
3. a kind of pressure servo control device and its method with packaged food sterilization according to claim 1, packaging food
Product sterilization pressure servo control method be：
(1), during the food of packaging is heated in retort, kept the temperature, cools down, pacified according to food top in retort
The displacement sensor of dress detects the concave-convex variation in food packaging；
(2), the PLC that will be equipped in the concave-convex signal access switch board changed of the food packaging detected, then by PLC according to packet
The change information that dress bears pressure controls the intake and exhaust of aeration valve, air bleeding valve connected with retort in time, so as to control packaging
External pressure, forms closed-loop control in retort；
(3), packaged food is in sterilization process, can be intuitive by being mounted on the electronic data of electronic display on switch board
It was found that the variation of packing material, controls intake and exhaust to realize pressure servo control in time, while obtain simultaneously pressure store SERVO CONTROL work
Skill data；
(4), pressure servo control process data is stored in switch board, when equivalent packaged food sterilization next time, directly used
This group of process for sterilizing data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810086446.9A CN108170178A (en) | 2018-01-25 | 2018-01-25 | A kind of pressure servo control device and its method with packaged food sterilization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810086446.9A CN108170178A (en) | 2018-01-25 | 2018-01-25 | A kind of pressure servo control device and its method with packaged food sterilization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108170178A true CN108170178A (en) | 2018-06-15 |
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ID=62515998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810086446.9A Pending CN108170178A (en) | 2018-01-25 | 2018-01-25 | A kind of pressure servo control device and its method with packaged food sterilization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108170178A (en) |
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2018
- 2018-01-25 CN CN201810086446.9A patent/CN108170178A/en active Pending
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