CN110092029B

CN110092029B - Segmented vacuumizing system of internal-vacuumizing type vacuum packaging machine

Info

Publication number: CN110092029B
Application number: CN201910352447.8A
Authority: CN
Inventors: 马建辉; 安建强; 马晓辉; 王殿宏; 孟庆贵; 张恭; 马旭阳; 王淙; 宫涛; 何通宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-29
Filing date: 2019-04-29
Publication date: 2021-05-18
Anticipated expiration: 2039-04-29
Also published as: CN110092029A

Abstract

The invention provides a segmented vacuumizing system of an internal-vacuumizing type vacuum packaging machine, which comprises a three-segment vacuumizing system and a multi-segment vacuumizing system, wherein the three-segment vacuumizing system comprises a single-vacuum-chamber working system and a six-vacuum-chamber continuous packaging system, the multi-segment vacuumizing system comprises a four-segment vacuumizing-technology single-vacuum-chamber working system, a five-segment vacuumizing-technology single-vacuum-chamber working system and a multi-vacuum-chamber continuous packaging system, and two or more segmentation modes can be selected according to different air pressure and normal pressure differences required by vacuum packaging, reference efficiency, cost and other factors The inflatable packaging can be applied to the purposes of energy conservation, high efficiency, air source saving and the like.

Description

Segmented vacuumizing system of internal-vacuumizing type vacuum packaging machine

Technical Field

The invention relates to the field of vacuum packaging equipment, in particular to a segmented vacuumizing system of an internal vacuumizing type vacuum packaging machine.

Background

The vacuum packaging machine is divided into an internal pumping type and an external pumping type according to the pumping mode. The internal-pumping vacuum packaging machine is used for placing a packaged object in a vacuum chamber, and vacuumizing and packaging the vacuum chamber so as to realize the purpose of vacuumizing the packaged object, has the advantages of high vacuum degree (the air pressure value is usually 600-1333Pa, namely 1/100 standard atmospheric pressure is about the right), little residual air and the like, and has the good effect which is incomparable with an external-pumping packaging machine. Although the internal vacuum packaging machine has the advantages, the internal vacuum packaging machine also has a plurality of disadvantages, and the packaging process comprises the steps of firstly vacuumizing the vacuum chamber, then packaging the packaged objects, and finally recovering the air pressure of the vacuum chamber and taking the packaged objects out. Because the processes of pumping and air releasing are completed at one time, the volume of air to be pumped in the packaged object is generally far less than the total volume of the actually pumped air in the vacuum chamber, and a large amount of air is pumped out inefficiently, so that the efficiency is very low, and great energy waste is caused. The frequent starting and stopping of the vacuum air pumping equipment also causes damage to the machine and influences the service life. In addition, one machine can only discontinuously pump one to two vacuum chambers, the utilization rate is low, and the continuous production is not facilitated.

Disclosure of Invention

In order to solve the problems, the invention provides a segmented vacuumizing system of an internal vacuumizing type vacuum packaging machine, which can select two or more segmented modes according to the different difference values of air pressure required by vacuum packaging and normal pressure, the reference efficiency, the cost and other factors. When in actual application, the invention can increase the number of vacuum chambers according to the requirement of production capacity on the basis of ensuring energy conservation and high efficiency, thereby realizing continuous production and improving the yield.

The technical scheme of the invention is as follows: the utility model provides an interior odd test vacuum packaging machine segmentation vacuum pumping system which characterized in that: the system comprises a three-section vacuumizing system and a multi-section vacuumizing system, wherein the three-section vacuumizing system comprises a single-vacuum-chamber working system and six-vacuum-chamber continuous packaging systems, and the multi-section vacuumizing system comprises a single-vacuum-chamber working system adopting a four-section vacuumizing technology, a single-vacuum-chamber working system adopting a five-section vacuumizing technology and a multi-vacuum-chamber continuous packaging system;

the single vacuum chamber working system of the three-section vacuum pumping system comprises the following components: the vacuum pump is connected with the vacuum tank through a pipeline and is controlled by the gas pressure control system, and the vacuum tank is at the air pressure required by vacuum packaging; the vacuum tank is connected with the first buffer tank and the second buffer tank through pipelines and is respectively controlled by the first air pressure controller and the second air pressure controller; the first pipeline, the second pipeline and the tenth pipeline are respectively connected with the first buffer tank, the second buffer tank and the vacuum tank; a packaging system required by vacuum packaging is arranged in the first vacuum chamber, and the first vacuum chamber is connected with the first pipeline, the second pipeline and the tenth pipeline through pipelines, is respectively controlled by the third electromagnetic valve, the fourth electromagnetic valve and the second electromagnetic valve and is kept closed; the first vacuum chamber is connected with the outside through a pipeline and is controlled by a first electromagnetic valve and kept closed; the first vacuum chamber is provided with a pressure gauge for observing the air pressure of the first vacuum chamber;

the single vacuum chamber working system of the four-section vacuum pumping technology comprises the following components: the vacuum pump is connected with the vacuum tank through a pipeline and is controlled by the gas pressure control system, and the vacuum tank is at the air pressure required by vacuum packaging; the vacuum tank is connected with the first buffer tank, the second buffer tank and the third buffer tank through pipelines and is respectively controlled by the first air pressure controller, the second air pressure controller and the third air pressure controller; the first pipeline, the second pipeline, the third pipeline and the tenth pipeline are respectively connected with the first buffer tank, the second buffer tank, the third buffer tank and the vacuum tank; a packaging system required by vacuum packaging is arranged in the vacuum chamber I, and the vacuum chamber I is connected with the pipeline I, the pipeline II, the pipeline III and the pipeline Ten through pipelines, is respectively controlled by the solenoid valve III, the solenoid valve IV, the solenoid valve V and the solenoid valve II and keeps closed; the first vacuum chamber is connected with the outside through a pipeline and is controlled by a first electromagnetic valve and kept closed; the first vacuum chamber is provided with a pressure gauge for observing the air pressure of the first vacuum chamber;

the single vacuum chamber working system of the five-section vacuum pumping technology comprises the following components: the vacuum pump is connected with the vacuum tank through a pipeline and is controlled by the gas pressure control system, and the vacuum tank is at the air pressure required by vacuum packaging; the vacuum tank is connected with the first buffer tank, the second buffer tank, the third buffer tank and the fourth buffer tank through pipelines and is respectively controlled by the first air pressure controller, the second air pressure controller, the third air pressure controller and the fourth air pressure controller; the first pipeline, the second pipeline, the third pipeline, the fourth pipeline and the tenth pipeline are respectively connected with the first buffer tank, the second buffer tank, the third buffer tank, the fourth buffer tank and the vacuum tank; a packaging system required by vacuum packaging is arranged in the vacuum chamber I, and the vacuum chamber I is connected with the pipeline I, the pipeline II, the pipeline III, the pipeline IV and the pipeline IV through pipelines, is respectively controlled by the electromagnetic valve III, the electromagnetic valve IV, the electromagnetic valve V, the electromagnetic valve VI and the electromagnetic valve II and keeps closed; the first vacuum chamber is connected with the outside through a pipeline and is controlled by a first electromagnetic valve and kept closed; the first vacuum chamber is provided with a pressure gauge for observing the pressure of the first vacuum chamber.

Further, the working steps of the single vacuum chamber working system of the three-section vacuum pumping system comprise: a, taking out the finished packaged object from the first vacuum chamber, loading the object to be packaged and closing the first vacuum chamber; b, connecting a first buffer tank and decompressing the first vacuum chamber; c, connecting a second buffer tank and decompressing the first vacuum chamber; d, connecting a vacuum tank, decompressing the vacuum chamber I and completing packaging; e, connecting a second buffer tank and boosting the pressure of the first vacuum chamber; step f, connecting the first buffer tank and boosting the pressure of the first vacuum chamber;

pre-vacuumizing before work is started: the vacuum pump operates, the vacuum tank is pumped to 1/100 atmospheric pressure required by vacuum packaging, and the gas pressure control system keeps the atmospheric pressure stable; pumping the first buffer tank to 2/3 atmospheric pressure, and controlling the first air pressure controller to be not higher than the value; pumping the second buffer tank to 1/3 atmospheric pressure, and controlling the second air pressure controller to be not higher than the value;

the working process is as follows: b, filling the first vacuum chamber with a to-be-packaged object, and then closing the first vacuum chamber to finish the step a; opening the third electromagnetic valve until the pressure is balanced and closed, enabling the air pressure of the first vacuum chamber and the air pressure of the first buffer tank to be the same as each other and higher than 2/3 atmospheric pressure, enabling the first air pressure controller to work, pumping out part of air, and reducing the air pressure of the first buffer tank to 2/3 atmospheric pressure to finish the step b; opening the fourth electromagnetic valve until the pressure is balanced and closed, enabling the air pressure of the first vacuum chamber and the air pressure of the second buffer tank to be the same as each other and higher than 1/3 atmospheric pressure, enabling the second air pressure controller to work, pumping out part of air, and reducing the air pressure of the second buffer tank to 1/3 atmospheric pressure to finish the step c; opening the second electromagnetic valve, enabling the gas pressure control system to work until the atmospheric pressure is reduced to 1/100 atmospheric pressure, closing the second electromagnetic valve, and packaging the object to be packaged to finish the step d; opening the electromagnetic valve IV until the pressure is balanced and closed, and keeping the pressure of the buffer tank II lower than 1/3 atmospheric pressure, wherein the air pressure controller II does not work at the moment, and the air is supplemented and extracted when being connected with the vacuum chamber I from the next packaging cycle, thereby completing the step e; opening the electromagnetic valve III until the pressure is balanced and closed, and enabling the buffer tank I to be lower than 2/3 atmospheric pressure, wherein the air pressure controller I does not work at the moment, and the air is supplemented and extracted when the next packaging cycle is connected with the vacuum chamber I, so that the step f is completed; and (c) opening the first electromagnetic valve until the pressure is balanced and closed, recovering the air pressure to 1 atmosphere, opening the first vacuum chamber to take out the packaged objects, putting new objects to be packaged to complete the step (a), and performing the next packaging cycle.

Further, the realization of continuous packaging requires one or several vacuum chambers working simultaneously for each step; the three-section vacuum pumping system completes one packaging cycle, which is six steps, and requires six or integral multiple of six vacuum chambers to work simultaneously; the continuous working process of the six vacuum chamber continuous packaging system is as follows: the vacuum chamber unit comprises a first vacuum chamber unit, a second vacuum chamber unit, a third vacuum chamber unit, a fourth vacuum chamber unit, a fifth vacuum chamber unit and a sixth vacuum chamber unit; the vacuum chamber unit one includes: a vacuum chamber I, a solenoid valve II, a solenoid valve III, a solenoid valve IV and a pressure gauge; the vacuum chamber unit two includes: the vacuum chamber unit III comprises a first vacuum chamber, a second electromagnetic valve I, a second electromagnetic valve II, a second electromagnetic valve III, a second electromagnetic valve IV and a second pressure gauge: the vacuum chamber unit III, the third electromagnetic valve I, the third electromagnetic valve II, the third electromagnetic valve III, the third electromagnetic valve IV and the third pressure gauge, wherein the vacuum chamber unit IV comprises: the vacuum chamber unit V comprises a vacuum chamber IV, a fourth solenoid valve I, a fourth solenoid valve II, a fourth solenoid valve III, a fourth solenoid valve IV and a fourth pressure gauge: the vacuum chamber unit six comprises a vacuum chamber unit five, a fifth electromagnetic valve I, a fifth electromagnetic valve II, a fifth electromagnetic valve III, a fifth electromagnetic valve IV and a fifth pressure gauge: a vacuum chamber six, a sixth electromagnetic valve I, a sixth electromagnetic valve II, a sixth electromagnetic valve III, a sixth electromagnetic valve IV and a sixth pressure gauge; the vacuum chamber unit I, the vacuum chamber unit II, the vacuum chamber unit III, the vacuum chamber unit IV, the vacuum chamber unit V and the vacuum chamber unit VI are respectively connected with the pipeline I, the pipeline II and the pipeline ten; in the continuous packaging process, after the packaging system runs stably, the buffer tank I, the buffer tank II and the vacuum tank are all in the air pressure of the normal working state, and the initial states of the vacuum chamber unit I, the vacuum chamber unit II, the vacuum chamber unit III, the vacuum chamber unit IV, the vacuum chamber unit V and the vacuum chamber unit VI are as follows: the vacuum chamber unit I is closed after the vacuum chamber I is filled with the object to be packaged, and the air pressure of the vacuum chamber I is 1 atmosphere, namely the step a is finished; the vacuum chamber unit II is connected with the buffer tank I, the air pressure of the vacuum chamber II is 2/3 atmospheric pressure, namely the step b is completed; the third vacuum chamber unit is connected with the second buffer tank, and the air pressure of the third vacuum chamber is 1/3 atmospheric pressure, namely the step c is finished; connecting the vacuum chamber unit IV with a vacuum tank to reach a set air pressure value and completing packaging, wherein the air pressure of the vacuum chamber IV is 1/100 atmospheric pressure, namely the step d is completed; the vacuum chamber unit V is connected with the buffer tank II, the air pressure of the vacuum chamber V is 1/3 atmospheric pressure, and the step e is finished; the sixth vacuum chamber unit is connected with the first buffer tank, the pressure of the sixth vacuum chamber is 2/3 atmospheric pressure, namely the step f is completed;

the following solenoid valves are only required to be opened and closed simultaneously to complete one-time product packaging: the electromagnetic valve I is connected with the electromagnetic valve II through a first electromagnetic valve I; the specific process is as follows: opening a third electromagnetic valve and a third fifth electromagnetic valve, simultaneously connecting the first vacuum chamber and the fifth vacuum chamber with a first buffer tank, after the pressure is balanced, slightly increasing the air pressure to 2/3 atmospheric pressure, closing the third electromagnetic valve and the third electromagnetic valve, working a first air pressure controller, reducing the buffer tank to 2/3 atmospheric pressure, closing the first air pressure controller, completing the step b by the first vacuum chamber unit, and completing the step f by the fifth vacuum chamber unit; opening a second electromagnetic valve IV and a fourth electromagnetic valve IV, simultaneously connecting a vacuum chamber II and the vacuum chamber IV with a buffer tank II, after the pressure is balanced, the air pressure value is slightly higher than 1/3 atmospheric pressure, closing the second electromagnetic valve IV and the fourth electromagnetic valve IV, working the air pressure controller II, reducing the buffer tank II to 1/3 atmospheric pressure, closing the air pressure controller II, completing the step c by the vacuum chamber unit II, and completing the step e by the vacuum chamber unit IV; opening the second third electromagnetic valve, connecting the third vacuum chamber with the vacuum tank, operating the gas pressure control system until the atmospheric pressure is reduced to 1/100 atmospheric pressure, closing the second third electromagnetic valve, completing packaging of the object to be packaged, and completing the step d by the third vacuum chamber unit; opening the first sixth electromagnetic valve, connecting the sixth vacuum chamber with the outside, recovering the air pressure to 1 atmosphere after the pressure is balanced, closing the first sixth electromagnetic valve, opening the sixth vacuum chamber, taking out the packaged object, closing the sixth vacuum chamber after a new object to be packaged is placed, and completing the step a by the sixth vacuum chamber unit; after the process is finished, each vacuum chamber unit respectively finishes one working step in sequence, and six vacuum chamber units finish six different steps of a packaging cycle; each vacuum chamber unit opens and closes the next electromagnetic valve according to the packaging work sequence, then the next product packaging can be carried out, and a packaging cycle can be completed every six times of product packaging according to the work sequence; because the step a and the step d in the six packaging steps are longer in completion time, and the other steps are shorter in time, the packaging speed can be doubled by simultaneously operating a plurality of vacuum chamber units in each step.

Further, the working process of the single vacuum chamber working system of the four-section vacuum pumping technology is as follows: pre-vacuumizing: the vacuum pump operates, the vacuum tank is pumped to 1/100 atmospheric pressure required by vacuum packaging, and the gas pressure control system keeps the atmospheric pressure stable; pumping the first buffer tank to 3/4 atmospheric pressure, and controlling the first air pressure controller to be not higher than the value; pumping the second buffer tank to 1/2 atmospheric pressure, and controlling the second air pressure controller to be not higher than the value; pumping the third buffer tank to 1/4 atmospheric pressure, and controlling the third buffer tank to be not higher than the value by the air pressure controller;

the vacuum chamber I is closed after the object to be packaged is loaded in the vacuum chamber I; opening the third electromagnetic valve until the pressure is balanced and closed, wherein the air pressure of the first vacuum chamber and the air pressure of the first buffer tank are the same and higher than 3/4 atmospheric pressure, the first air pressure controller works to pump out part of air, and the air pressure of the first buffer tank is reduced to 3/4 atmospheric pressure; opening the fourth electromagnetic valve until the pressure is balanced and closed, wherein the air pressure of the first vacuum chamber and the air pressure of the second buffer tank are the same and higher than 1/2 atmospheric pressure, the second air pressure controller works to pump out partial air, and the air pressure of the second buffer tank is reduced to 1/2 atmospheric pressure; opening the electromagnetic valve V until the pressure is balanced and closed, wherein the air pressure of the vacuum chamber I and the air pressure of the buffer tank III are the same and higher than 1/4 atmospheric pressure, the air pressure controller III works to pump out partial air, and the air pressure of the buffer tank III is reduced to 1/4 atmospheric pressure; opening the second electromagnetic valve, enabling the gas pressure control system to work until the atmospheric pressure is reduced to 1/100 atmospheric pressure, closing the second electromagnetic valve, and packaging the object to be packaged; opening the electromagnetic valve V until the pressure is balanced and closed, wherein the third buffer tank is lower than 1/4 atmospheric pressure, the third air pressure controller does not work at the moment, and the air is supplemented and the redundant air is pumped out when the next packaging cycle is connected with the first vacuum chamber; opening the electromagnetic valve IV until the pressure is balanced and closed, and keeping the pressure of the buffer tank II lower than 1/2 atmospheric pressure, wherein the air pressure controller II does not work at the moment, and air is supplemented and redundant air is pumped out when the next packaging cycle is connected with the vacuum chamber I; opening the electromagnetic valve III until the pressure is balanced and closed, wherein the first buffer tank is lower than 3/4 atmospheric pressure, the first air pressure controller does not work at the moment, and the air is supplemented and the redundant air is pumped out when the next packaging cycle is connected with the first vacuum chamber; and opening the first electromagnetic valve until the pressure is balanced and closed, recovering the air pressure to 1 atmosphere, opening the first vacuum chamber, taking out the packaged objects, and putting new objects to be packaged into the vacuum chamber for the next packaging cycle.

Further, the working process of the single vacuum chamber working system of the five-section vacuum pumping technology is as follows: pre-vacuumizing: the vacuum pump operates, the vacuum tank is pumped to 1/100 atmospheric pressure required by vacuum packaging, and the gas pressure control system keeps the atmospheric pressure stable; pumping the first buffer tank to 4/5 atmospheric pressure, and controlling the first air pressure controller to be not higher than the value; pumping the second buffer tank to 3/5 atmospheric pressure, and controlling the second air pressure controller to be not higher than the value; pumping the third buffer tank to 2/5 atmospheric pressure, and controlling the third buffer tank to be not higher than the value by the air pressure controller; pumping the buffer tank IV to the air pressure of 1/5 atmospheric pressure, and controlling the air pressure to be not higher than the value by the air pressure controller IV;

the vacuum chamber I is closed after the object to be packaged is loaded in the vacuum chamber I; opening the third electromagnetic valve until the pressure is balanced and closed, wherein the air pressure of the first vacuum chamber and the air pressure of the first buffer tank are the same and higher than 4/5 atmospheric pressure, the first air pressure controller works to pump out part of air, and the air pressure of the first buffer tank is reduced to 4/5 atmospheric pressure; opening the fourth electromagnetic valve until the pressure is balanced and closed, wherein the air pressure of the first vacuum chamber and the air pressure of the second buffer tank are the same and higher than 3/5 atmospheric pressure, the second air pressure controller works to pump out partial air, and the air pressure of the second buffer tank is reduced to 3/5 atmospheric pressure; opening the electromagnetic valve V until the pressure is balanced and closed, wherein the air pressure of the vacuum chamber I and the air pressure of the buffer tank III are the same and higher than 2/5 atmospheric pressure, the air pressure controller III works to pump out partial air, and the air pressure of the buffer tank III is reduced to 2/5 atmospheric pressure; opening the solenoid valve six until the pressure is balanced and closed, wherein the air pressure of the first vacuum chamber and the air pressure of the fourth buffer tank are the same and higher than 1/5 atmospheric pressure, the air pressure controller four works to pump out partial air, and the air pressure of the fourth buffer tank is reduced to 1/5 atmospheric pressure; opening the second electromagnetic valve, enabling the gas pressure control system to work until the atmospheric pressure is reduced to 1/100 atmospheric pressure, closing the second electromagnetic valve, and packaging the object to be packaged; opening the solenoid valve six until the pressure is balanced and closed, and when the pressure of the buffer tank four is lower than 1/5 atmospheric pressure, the air pressure controller four does not work at the moment, and the air is supplemented and the redundant air is pumped out when the next packaging cycle is connected with the vacuum chamber one; opening the electromagnetic valve V until the pressure is balanced and closed, wherein the third buffer tank is lower than 2/5 atmospheric pressure, the third air pressure controller does not work at the moment, and the air is supplemented and the redundant air is pumped out when the next packaging cycle is connected with the first vacuum chamber; opening the electromagnetic valve IV until the pressure is balanced and closed, and keeping the pressure of the buffer tank II lower than 3/5 atmospheric pressure, wherein the air pressure controller II does not work at the moment, and air is supplemented and redundant air is pumped out when the next packaging cycle is connected with the vacuum chamber I; opening the electromagnetic valve III until the pressure is balanced and closed, wherein the first buffer tank is lower than 4/5 atmospheric pressure, the first air pressure controller does not work at the moment, and the air is supplemented and the redundant air is pumped out when the next packaging cycle is connected with the first vacuum chamber; and opening the first electromagnetic valve until the pressure is balanced and closed, recovering the air pressure to 1 atmosphere, opening the first vacuum chamber, taking out the packaged objects, and putting new objects to be packaged into the vacuum chamber for the next packaging cycle.

Further, the packaging process of the single vacuum chamber with the four-section vacuum pumping technology is divided into eight steps: taking out the finished packaged objects from the first vacuum chamber, loading the objects to be packaged and closing the first vacuum chamber; the first buffer tank is connected, and the first vacuum chamber is decompressed; the buffer tank II is connected, and the vacuum chamber I is decompressed; connecting a third buffer tank and decompressing the first vacuum chamber; connecting a vacuum tank, decompressing the vacuum chamber I and completing packaging; the third buffer tank is connected, and the first vacuum chamber is pressurized; the buffer tank II is connected, and the vacuum chamber I is boosted; the first buffer tank is connected, and the first vacuum chamber is pressurized.

Further, the packaging process of the single vacuum chamber with the five-section vacuum pumping technology is divided into ten steps: taking out the finished packaged objects from the first vacuum chamber, loading the objects to be packaged and closing the first vacuum chamber; the first buffer tank is connected, and the first vacuum chamber is decompressed; the buffer tank II is connected, and the vacuum chamber I is decompressed; connecting a third buffer tank and decompressing the first vacuum chamber; the fourth buffer tank and the first vacuum chamber are connected for pressure reduction; connecting a vacuum tank, decompressing the vacuum chamber I and completing packaging; the fourth buffer tank is connected, and the first vacuum chamber is pressurized; the third buffer tank is connected, and the first vacuum chamber is pressurized; the buffer tank II is connected, and the vacuum chamber I is boosted; the first buffer tank is connected, and the first vacuum chamber is pressurized.

Furthermore, each step of realizing continuous packaging needs one or more vacuum chambers to work simultaneously, and the three-section vacuum pumping system needs six or integral multiples of six vacuum chambers to work simultaneously; the packaging process of the four-section vacuum pumping technology single vacuum chamber is divided into eight steps, eight or integral multiple of eight vacuum chambers are required to work simultaneously, the packaging process of the five-section vacuum pumping technology single vacuum chamber is divided into ten steps, ten or integral multiple of ten vacuum chambers are required to work simultaneously, the packaging process of the N-section vacuum pumping technology single vacuum chamber is divided into 2 xN steps, 2 xN or integral multiple of 2 xN vacuum chambers are required to work simultaneously, and all the vacuum chambers are uniformly distributed in different steps in the working process; each vacuum chamber unit is opened and closed with a corresponding electromagnetic valve according to the packaging working sequence, one-time packaging can be completed, eight or ten times of packaging circulation can be completed according to the working sequence, and all the vacuum chamber units are restored to the initial state; except the steps of connecting the vacuum tank and taking out the packaged object and loading the packaged object into the vacuum tank, the vacuum chamber in the air pressure reduction stage and the vacuum chamber in the air pressure rise stage are simultaneously connected with the corresponding buffer tank through the electromagnetic valve to achieve pressure balance, and the air pressure controller does not need to be opened frequently; the electronic control system is matched to control a plurality of vacuum chambers and electromagnetic valves, and the on-off time and the sequence are distributed to realize continuous automatic production;

n is a natural number of 1 or more than 1;

the vacuum chamber unit includes a plurality of vacuum chambers.

Furthermore, the first pipeline, the second pipeline, the tenth pipeline and/or the third pipeline and/or the fourth pipeline are connected with the first vacuum chambers through pipelines and a plurality of electromagnetic valves.

Furthermore, in order to prevent the air pressure in the vacuum tank, the first buffer tank, the second buffer tank, the third buffer tank and the fourth buffer tank from generating large fluctuation, the volume of the vacuum tank, the first buffer tank, the second buffer tank, the third buffer tank and the fourth buffer tank is larger than that of the vacuum chamber assembly.

Compared with the prior art, the invention has the beneficial effects that: two or more segmentation modes can be selected according to different differences between the air pressure required by vacuum packaging and the normal pressure, and the factors of efficiency, cost and the like. When the invention is actually applied, on the basis of ensuring energy conservation and high efficiency, the number of the vacuum chambers can be increased according to the requirement of production capacity, the continuous production and the yield improvement are realized, the applicability of the segmentation mode is wider, the invention can be applied to the generation of air pressure change or air partial pressure change, such as the work of pressurizing and then depressurizing, inflation packaging and the like, and the aims of saving energy, high efficiency, saving air source and the like are realized.

Drawings

The invention is further illustrated below with reference to the figures:

FIG. 1 is a schematic view of a three stage evacuation system of the present invention;

FIG. 2 is a schematic view of a continuous packaging process using an example of six vacuum chambers of the present invention;

FIG. 3 is a schematic diagram of the four-stage evacuation technique of the present invention;

FIG. 4 is a schematic diagram of a five-stage evacuation technique of the present invention;

FIG. 5 is a schematic view of a continuous packaging process using an example of eight vacuum chambers of the present invention;

FIG. 6 is a schematic view of a continuous packaging process using ten vacuum chambers as an example of the present invention;

shown in fig. 1, 2, 3, 4, 5, 6: 1. a vacuum pump, 2, a vacuum tank, 3, a first buffer tank, 4, a second buffer tank, 5, a third buffer tank, 6, a fourth buffer tank, 1-1, a gas pressure control system, 1-2, a first air pressure controller, 1-3, a second air pressure controller, 1-4, a third air pressure controller, 1-5, a fourth air pressure controller, 2-1, a first pipeline, 2-2, a second pipeline, 2-3, a third pipeline, 2-4, a fourth pipeline, 2-10, a tenth pipeline, 3-1, a first vacuum chamber, 3-2, a third electromagnetic valve, 3-3, a fourth electromagnetic valve, 3-4, a fifth electromagnetic valve, 3-5, a sixth electromagnetic valve, 3-11, a first electromagnetic valve, 3-12, a pressure gauge, 3-13, a second electromagnetic valve, 4-1, a second vacuum chamber, 4-11, a vacuum chamber, A first second solenoid valve 4-13, a second solenoid valve 4-2, a third second solenoid valve 4-3, a fourth second solenoid valve 4-12, a second pressure gauge 5-1, a third vacuum chamber 5-11, a first third solenoid valve 5-13, a second third solenoid valve 5-2, a third solenoid valve 5-3, a fourth third solenoid valve 5-12, a third pressure gauge 6-1, a fourth vacuum chamber 6-11, a first fourth solenoid valve 6-13, a second fourth solenoid valve 6-2, a third fourth solenoid valve 6-3, a fourth solenoid valve four, 6-12, a fourth pressure gauge 7-1, a fifth vacuum chamber five, 7-11, a first fifth solenoid valve 7-13, a second fifth solenoid valve 7-2, and a third fifth solenoid valve, 7-3 parts of a fifth electromagnetic valve, 7-12 parts of a fifth pressure gauge, 8-1 part of a vacuum chamber, 8-11 parts of a sixth electromagnetic valve I, 8-13 parts of a sixth electromagnetic valve II, 8-2 parts of a sixth electromagnetic valve III, 8-3 parts of a sixth electromagnetic valve, 8-12 parts of a sixth pressure gauge.

Detailed Description

The present invention will be described in further detail with reference to the drawings, which are only for explaining the present invention and are schematic illustrations of the embodiments of the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, 2, 3, 4, 5 and 6, the segmented vacuum-pumping system of the internal vacuum-pumping packing machine comprises a three-segment vacuum-pumping system and a multi-segment vacuum-pumping system, wherein the three-segment vacuum-pumping system comprises a single-vacuum-chamber working system and six-vacuum-chamber continuous packing systems, and the multi-segment vacuum-pumping system comprises a single-vacuum-chamber working system of four-segment vacuum-pumping technology, a single-vacuum-chamber working system of five-segment vacuum-pumping technology and a multi-vacuum-chamber continuous packing system;

as shown in fig. 1, the single vacuum chamber working system of the three-stage vacuum pumping system comprises the following components: the vacuum pump 1 is connected with the vacuum tank 2 through a pipeline, and the gas pressure control system 1-1 controls the vacuum tank 2 to be at the air pressure required by vacuum packaging; the vacuum tank 2 is connected with the first buffer tank 3 and the second buffer tank 4 through pipelines and is respectively controlled by a first air pressure controller 1-2 and a second air pressure controller 1-3; the pipeline I2-1, the pipeline II 2-2 and the pipeline VI 2-10 are respectively connected with the buffer tank I3, the buffer tank II 4 and the vacuum tank 2; a packaging system required by vacuum packaging is arranged in the vacuum chamber I3-1, the vacuum chamber I3-1 is connected with the pipeline I2-1, the pipeline II 2-2 and the pipeline III 2-10 through pipelines, and is respectively controlled by the electromagnetic valve III 3-2, the electromagnetic valve IV 3-3 and the electromagnetic valve II 3-13 and kept closed; the vacuum chamber I3-1 is connected with the outside through a pipeline and is controlled by an electromagnetic valve I3-11 and kept closed; a pressure gauge 3-12 is arranged on the vacuum chamber I3-1 and is used for observing the air pressure of the vacuum chamber I3-1; taking the pressure required for vacuum packaging as 1/100 atm for example, the first buffer tank 3 is 2/3 atm, the second buffer tank 4 is 1/3 atm, and the vacuum tank 2 is 1/100 atm;

as shown in fig. 3, the single vacuum chamber working system of the four-stage vacuum pumping technology is composed as follows: the vacuum pump 1 is connected with the vacuum tank 2 through a pipeline and is controlled by the gas pressure control system 1-1, and the vacuum tank 2 is at the air pressure required by vacuum packaging; the vacuum tank 2 is connected with a first buffer tank 3, a second buffer tank 4 and a third buffer tank 5 through pipelines and is respectively controlled by a first air pressure controller 1-2, a second air pressure controller 1-3 and a third air pressure controller 1-4; the pipeline I2-1, the pipeline II 2-2, the pipeline III 2-3 and the pipeline VI 2-10 are respectively connected with the buffer tank I3, the buffer tank II 4, the buffer tank III 5 and the vacuum tank 2; a packaging system required by vacuum packaging is arranged in the vacuum chamber I3-1, the vacuum chamber I3-1 is connected with the pipeline I2-1, the pipeline II 2-2, the pipeline III 2-3 and the pipeline VI 2-10 through pipelines, and is controlled by the electromagnetic valve III 3-2, the electromagnetic valve IV 3-3, the electromagnetic valve V3-4 and the electromagnetic valve II 3-13 respectively and kept closed; the vacuum chamber I3-1 is connected with the outside through a pipeline and is controlled by an electromagnetic valve I3-11 and kept closed; a pressure gauge 3-12 is arranged on the vacuum chamber I3-1 and is used for observing the air pressure of the vacuum chamber I3-1; taking the pressure required for vacuum packaging as 1/100 atm for example, the first buffer tank 3 is 3/4 atm, the second buffer tank 4 is 1/2 atm, the third buffer tank 5 is 1/4 atm, and the vacuum tank 2 is 1/100 atm;

as shown in fig. 4, the single vacuum chamber working system of the five-stage vacuum pumping technology is composed as follows: the vacuum pump 1 is connected with the vacuum tank 2 through a pipeline and is controlled by the gas pressure control system 1-1, and the vacuum tank 2 is at the air pressure required by vacuum packaging; the vacuum tank 2 is connected with a first buffer tank 3, a second buffer tank 4, a third buffer tank 5 and a fourth buffer tank 6 through pipelines and is respectively controlled by a first air pressure controller 1-2, a second air pressure controller 1-3, a third air pressure controller 1-4 and a fourth air pressure controller 1-5; the pipeline I2-1, the pipeline II 2-2, the pipeline III 2-3, the pipeline IV 2-4 and the pipeline IV 2-10 are respectively connected with the buffer tank I3, the buffer tank II 4, the buffer tank III 5, the buffer tank IV 6 and the vacuum tank 2; a packaging system required by vacuum packaging is arranged in the vacuum chamber I3-1, the vacuum chamber I3-1 is connected with the pipeline I2-1, the pipeline II 2-2, the pipeline III 2-3, the pipeline IV 2-4 and the pipeline IV 2-10 through pipelines, and is respectively controlled by the electromagnetic valve III 3-2, the electromagnetic valve IV 3-3, the electromagnetic valve V3-4, the electromagnetic valve VI 3-5 and the electromagnetic valve II 3-13 and kept closed; the vacuum chamber I3-1 is connected with the outside through a pipeline and is controlled by an electromagnetic valve I3-11 and kept closed; a pressure gauge 3-12 is arranged on the vacuum chamber I3-1 and is used for observing the air pressure of the vacuum chamber I3-1; taking the pressure required for vacuum packaging as 1/100 atmospheres for example, the first buffer tank 3 has a pressure of 4/5 atmospheres, the second buffer tank 4 has a pressure of 3/5 atmospheres, the third buffer tank 5 has a pressure of 2/5 atmospheres, the fourth buffer tank 6 has a pressure of 1/5 atmospheres, and the vacuum tank 2 has a pressure of 1/100 atmospheres.

Further, the working steps of the single vacuum chamber working system of the three-section vacuum pumping system comprise: step a, taking out the finished packaged objects from the vacuum chamber I3-1, loading the packaged objects into the vacuum chamber I3-1 and closing the vacuum chamber I; b, connecting a first buffer tank 3, and decompressing the first vacuum chamber 3-1; c, connecting a second buffer tank 4, and decompressing the first vacuum chamber 3-1; d, connecting a vacuum tank 2, decompressing the first vacuum chamber 3-1 and completing packaging; e, connecting a second buffer tank 4, and boosting the pressure of the first vacuum chamber 3-1; step f, connecting a first buffer tank 3, and boosting the pressure of the first vacuum chamber 3-1;

pre-vacuumizing before work is started: the vacuum pump operates, the vacuum tank 2 is pumped to 1/100 atmospheric pressure required by vacuum packaging, and the air pressure is kept stable by the air pressure control system 1-1; pumping the buffer tank I3 to the air pressure of 2/3 atmospheric pressure, and controlling the air pressure to be not higher than the value by an air pressure controller I1-2; pumping the buffer tank II 4 to the atmospheric pressure of 1/3 atmospheric pressure, and controlling the atmospheric pressure to be not higher than the atmospheric pressure by the air pressure controller II 1-3;

the working process is as follows: b, filling the vacuum chamber I3-1 with a to-be-packaged object, and then closing the vacuum chamber I3-1 to finish the step a; opening the electromagnetic valve III 3-2 until the pressure is balanced and closed, enabling the air pressure of the vacuum chamber I3-1 and the air pressure of the buffer tank I3 to be the same and higher than 2/3 atmospheric pressure, enabling the air pressure controller I1-2 to work, pumping out part of air, and reducing the air pressure of the buffer tank I3 to 2/3 atmospheric pressure to finish the step b; opening the fourth electromagnetic valve 3-3 until the pressure is balanced and closed, enabling the air pressure of the first vacuum chamber 3-1 and the second buffer tank 4 to be the same and higher than 1/3 atmospheric pressure, enabling the second air pressure controller 1-3 to work, pumping out part of air, and reducing the pressure of the second buffer tank 4 to 1/3 atmospheric pressure to finish the step c; opening the second electromagnetic valve 3-13, enabling the gas pressure control system 1-1 to work until the atmospheric pressure is reduced to 1/100 atmospheric pressure, closing the second electromagnetic valve 3-13, and packaging the object to be packaged to finish the step d; opening the four electromagnetic valves 3-3 until the pressure is balanced and closed, wherein the second buffer tank 4 is lower than 1/3 atmospheric pressure, the second air pressure controller 1-3 does not work at the moment, and the air is supplemented and extracted when being connected with the first vacuum chamber 3-1 by the next packaging cycle, so as to finish the step e; opening the electromagnetic valve III 3-2 until the pressure is balanced and closed, wherein the first buffer tank 3 is lower than 2/3 atmospheric pressure, the first air pressure controller 1-2 does not work at the moment, and the air is supplemented and extracted when being connected with the first vacuum chamber 3-1 by the next packaging cycle to finish the step f; and (4) opening the first electromagnetic valve (3-11) until the pressure is balanced and closed, recovering the air pressure to 1 atmosphere, opening the first vacuum chamber (3-1), taking out the packaged objects, putting new objects to be packaged into the vacuum chamber, completing the step a, and performing the next packaging cycle.

Further, as shown in fig. 2, the realization of continuous packaging requires one or several vacuum chambers working simultaneously for each step; the three-section vacuum pumping system completes one packaging cycle, which is six steps, and requires six or integral multiple of six vacuum chambers to work simultaneously; the continuous working process of the six vacuum chamber continuous packaging system is as follows: the vacuum chamber unit comprises a first vacuum chamber unit, a second vacuum chamber unit, a third vacuum chamber unit, a fourth vacuum chamber unit, a fifth vacuum chamber unit and a sixth vacuum chamber unit; the vacuum chamber unit one includes: 3-1 parts of a vacuum chamber I, 3-11 parts of a solenoid valve I, 3-13 parts of a solenoid valve II, 3-2 parts of a solenoid valve III, 3-3 parts of a solenoid valve IV and 3-12 parts of a pressure gauge; the vacuum chamber unit two includes: a second vacuum chamber 4-1, a first second electromagnetic valve 4-11, a second electromagnetic valve 4-13, a third second electromagnetic valve 4-2, a fourth second electromagnetic valve 4-3, and a second pressure gauge 4-12, wherein the third vacuum chamber unit comprises: a vacuum chamber III 5-1, a third electromagnetic valve I5-11, a third electromagnetic valve II 5-13, a third electromagnetic valve III 5-2, a third electromagnetic valve IV 5-3, and a third pressure gauge 5-12, wherein the vacuum chamber IV comprises: a vacuum chamber unit IV 6-1, a fourth electromagnetic valve I6-11, a fourth electromagnetic valve II 6-13, a fourth electromagnetic valve III 6-2, a fourth electromagnetic valve IV 6-3 and a fourth pressure gauge 6-12, wherein the vacuum chamber unit V comprises: a vacuum chamber five 7-1, a fifth electromagnetic valve one 7-11, a fifth electromagnetic valve two 7-13, a fifth electromagnetic valve three 7-2, a fifth electromagnetic valve four 7-3, a fifth pressure gauge 7-12, and a vacuum chamber unit six comprising: 8-1 parts of a vacuum chamber six, 8-11 parts of a sixth electromagnetic valve I, 8-13 parts of a sixth electromagnetic valve II, 8-2 parts of a sixth electromagnetic valve III, 8-3 parts of a sixth electromagnetic valve IV and 8-12 parts of a sixth pressure gauge; the vacuum chamber unit I, the vacuum chamber unit II, the vacuum chamber unit III, the vacuum chamber unit IV, the vacuum chamber unit V and the vacuum chamber unit VI are respectively connected with the pipeline I2-1, the pipeline II 2-2 and the pipeline Ten 2-10; in the continuous packaging process, after the packaging system runs stably, the first buffer tank 3, the second buffer tank 4 and the vacuum tank 2 are all in the air pressure of the normal working state, and the initial states of the first vacuum chamber unit, the second vacuum chamber unit, the third vacuum chamber unit, the fourth vacuum chamber unit, the fifth vacuum chamber unit and the sixth vacuum chamber unit are as follows: the vacuum chamber unit I is closed after the vacuum chamber I3-1 is filled with the object to be packaged, and the air pressure of the vacuum chamber I3-1 is 1 atmosphere, namely the step a is finished; the vacuum chamber unit II is connected with the buffer tank I3, the air pressure of the vacuum chamber II 4-1 is 2/3 atmospheric pressure, namely the step b is completed; the vacuum chamber unit III is connected with the buffer tank II 4, the air pressure of the vacuum chamber III 5-1 is 1/3 atmospheric pressure, namely the step c is completed; connecting the vacuum chamber unit IV with the vacuum tank 2, reaching the set air pressure value and completing the packaging, wherein the air pressure of the vacuum chamber IV 6-1 is 1/100 atmospheric pressure, namely completing the step d; the vacuum chamber unit V is connected with the buffer tank II 4, the air pressure of the vacuum chamber V7-1 is 1/3 atmospheric pressure, and the step e is completed; the vacuum chamber unit six is connected with the buffer tank I3, the air pressure of the vacuum chamber six 8-1 is 2/3 atmospheric pressure, namely the step f is completed;

the following solenoid valves are only required to be opened and closed simultaneously to complete one-time product packaging: 3-2 parts of a third electromagnetic valve, 4-3 parts of a fourth electromagnetic valve, 5-13 parts of a second electromagnetic valve, 6-3 parts of a fourth electromagnetic valve, 7-2 parts of a third electromagnetic valve and 8-11 parts of a first sixth electromagnetic valve; the specific process is as follows: opening the third electromagnetic valve 3-2 and the fifth electromagnetic valve 3-2, simultaneously connecting the first vacuum chamber 3-1 and the fifth vacuum chamber 7-1 with the first buffer tank 3, after the pressure is balanced, slightly increasing the air pressure value to 2/3 atmospheric pressure, closing the third electromagnetic valve 3-2 and the fifth electromagnetic valve three 7-2, operating the first air pressure controller 1-2, reducing the first buffer tank 3 to 2/3 atmospheric pressure, closing the first air pressure controller 1-2, completing the step b by the first vacuum chamber unit, and completing the step f by the fifth vacuum chamber unit; opening a fourth electromagnetic valve 4-3 and a fourth electromagnetic valve 6-3, simultaneously connecting a second vacuum chamber 4-1 and a fourth vacuum chamber 6-1 with a second buffer tank 4, after the pressure is balanced, slightly increasing the air pressure to 1/3 atmospheric pressure, closing the fourth electromagnetic valve 4-3 and the fourth electromagnetic valve 6-3, working a second air pressure controller 1-3, reducing the second buffer tank 4 to 1/3 atmospheric pressure, closing the second air pressure controller 1-3, completing the step c in the second vacuum chamber unit, and completing the step e in the fourth vacuum chamber unit; opening a second third electromagnetic valve 5-13, connecting a third vacuum chamber 5-1 with the vacuum tank 2, enabling the gas pressure control system 1-1 to work until the atmospheric pressure is reduced to 1/100 atmospheric pressure, closing the second third electromagnetic valve 5-13, completing packaging of the object to be packaged, and completing the step d by a third vacuum chamber unit; opening the first 8-11 sixth electromagnetic valve, connecting the sixth 8-1 vacuum chamber with the outside, recovering the air pressure to 1 atmosphere after the pressure is balanced, closing the first 8-11 sixth electromagnetic valve, opening the sixth 8-1 vacuum chamber, taking out the packaged object, closing the sixth 8-1 vacuum chamber after a new object to be packaged is put in, and completing the step a by the sixth vacuum chamber unit; after the process is finished, each vacuum chamber unit respectively finishes one working step in sequence, and six vacuum chamber units finish six different steps of a packaging cycle; every real empty room unit opens and closes next solenoid valve according to the packing work order, can carry out next product packaging, and every six times product packaging of accomplishing according to work order can accomplish once the packing circulation, and all real empty room units all resume initial condition, and the packaging process is as follows:

because the step a and the step d in the six packaging steps are longer in completion time, and the other steps are shorter in time, the packaging speed can be doubled by simultaneously operating a plurality of vacuum chamber units in each step.

Further, the working process of the single vacuum chamber working system of the four-section vacuum pumping technology is as follows: pre-vacuumizing: the vacuum pump operates, the vacuum tank 2 is pumped to 1/100 atmospheric pressure required by vacuum packaging, and the air pressure is kept stable by the air pressure control system 1-1; pumping the buffer tank I3 to the air pressure of 3/4 atmospheric pressure, and controlling the air pressure to be not higher than the value by an air pressure controller I1-2; pumping the buffer tank II 4 to the atmospheric pressure of 1/2 atmospheric pressure, and controlling the atmospheric pressure to be not higher than the atmospheric pressure by the air pressure controller II 1-3; pumping the buffer tank III 5 to the air pressure of 1/4 atmospheric pressure, and controlling the air pressure to be not higher than the value by an air pressure controller III 1-4;

after the vacuum chamber I3-1 is filled with the object to be packaged, closing the vacuum chamber I3-1; opening the electromagnetic valve III 3-2 until the pressure is balanced and closed, wherein the air pressure of the vacuum chamber I3-1 and the air pressure of the buffer tank I3 are the same and higher than 3/4 atmospheric pressure, the air pressure controller I1-2 works, part of air is pumped out, and the air pressure of the buffer tank I3 is reduced to 3/4 atmospheric pressure; opening the fourth electromagnetic valve 3-3 until the pressure is balanced and closed, wherein the air pressure of the first vacuum chamber 3-1 and the second buffer tank 4 is the same and higher than 1/2 atmospheric pressure, the second air pressure controller 1-3 works to pump out partial air, and the second buffer tank 4 is reduced to 1/2 atmospheric pressure; opening the electromagnetic valve five 3-4 until the pressure is balanced and closed, wherein the air pressure of the vacuum chamber one 3-1 and the air pressure of the buffer tank three 5 are the same and higher than 1/4 atmospheric pressure, the air pressure controller three 1-4 works, part of air is pumped out, and the air pressure of the buffer tank three 5 is reduced to 1/4 atmospheric pressure; opening the second electromagnetic valve 3-13, enabling the gas pressure control system 1-1 to work until the atmospheric pressure is reduced to 1/100 atmospheric pressure, closing the second electromagnetic valve 3-13, and packaging the object to be packaged; opening the electromagnetic valve five 3-4 until the pressure is balanced and closed, wherein the buffer tank three 5 is lower than 1/4 atmospheric pressure, the air pressure controller three 1-4 does not work at the moment, and the air is supplemented and the redundant air is pumped out when the next packaging cycle is connected with the vacuum chamber one 3-1; opening the four electromagnetic valves 3-3 until the pressure is balanced and closed, wherein the second buffer tank 4 is lower than 1/2 atmospheric pressure, the second air pressure controller 1-3 does not work at the moment, and the air is supplemented and the redundant air is pumped out when the next packaging cycle is connected with the first vacuum chamber 3-1; opening the electromagnetic valve III 3-2 until the pressure is balanced and closed, wherein the first buffer tank 3 is lower than 3/4 atmospheric pressure, the first air pressure controller 1-2 does not work at the moment, and the air is supplemented and the redundant air is pumped out when the next packaging cycle is connected with the first vacuum chamber 3-1; and opening the first electromagnetic valve 3-11 until the pressure is balanced and closed, recovering the air pressure to 1 atmosphere, opening the first vacuum chamber 3-1, taking out the packaged objects, and putting new objects to be packaged into the vacuum chamber for the next packaging cycle.

Further, the working process of the single vacuum chamber working system of the five-section vacuum pumping technology is as follows: pre-vacuumizing: the vacuum pump operates, the vacuum tank 2 is pumped to 1/100 atmospheric pressure required by vacuum packaging, and the air pressure is kept stable by the air pressure control system 1-1; pumping the buffer tank I3 to the air pressure of 4/5 atmospheric pressure, and controlling the air pressure to be not higher than the value by an air pressure controller I1-2; pumping the buffer tank II 4 to the atmospheric pressure of 3/5 atmospheric pressure, and controlling the atmospheric pressure to be not higher than the atmospheric pressure by the air pressure controller II 1-3; pumping the buffer tank III 5 to the air pressure of 2/5 atmospheric pressure, and controlling the air pressure to be not higher than the value by an air pressure controller III 1-4; pumping the buffer tank IV 6 to the air pressure of 4/5 atmospheric pressure, and controlling the air pressure to be not higher than the value by an air pressure controller IV 1-5;

after the vacuum chamber I3-1 is filled with the object to be packaged, closing the vacuum chamber I3-1; opening the electromagnetic valve III 3-2 until the pressure is balanced and closed, wherein the air pressure of the vacuum chamber I3-1 and the air pressure of the buffer tank I3 are the same and higher than 4/5 atmospheric pressure, the air pressure controller I1-2 works, part of air is pumped out, and the air pressure of the buffer tank I3 is reduced to 4/5 atmospheric pressure; opening the four electromagnetic valves 3-3 until the pressure is balanced and closed, wherein the air pressure of the first vacuum chamber 3-1 and the second buffer tank 4 is the same and higher than 3/5 atmospheric pressure, the second air pressure controller 1-3 works to pump out partial air, and the second buffer tank 4 is reduced to 3/5 atmospheric pressure; opening the electromagnetic valve five 3-4 until the pressure is balanced and closed, wherein the air pressure of the vacuum chamber one 3-1 and the air pressure of the buffer tank three 5 are the same and higher than 2/5 atmospheric pressure, the air pressure controller three 1-4 works, part of air is pumped out, and the air pressure of the buffer tank three 5 is reduced to 2/5 atmospheric pressure; opening the electromagnetic valve six 3-5 until the pressure is balanced and closed, wherein the air pressure of the vacuum chamber one 3-1 and the buffer tank four 6 is the same and higher than 1/5 atmospheric pressure, the air pressure controller four 1-5 works, part of air is pumped out, and the buffer tank four 6 is reduced to 1/5 atmospheric pressure; opening the second electromagnetic valve 3-13, enabling the gas pressure control system 1-1 to work until the atmospheric pressure is reduced to 1/100 atmospheric pressure, closing the second electromagnetic valve 3-13, and packaging the object to be packaged; opening the electromagnetic valve six 3-5 until the pressure is balanced and closed, wherein the buffer tank four 6 is lower than 1/5 atmospheric pressure, the air pressure controller four 1-5 does not work at the moment, and the air is supplemented and the redundant air is pumped out when the next packaging cycle is connected with the vacuum chamber one 3-1; opening the electromagnetic valve five 3-4 until the pressure is balanced and closed, wherein the buffer tank three 5 is lower than 2/5 atmospheric pressure, the air pressure controller three 1-4 does not work at the moment, and the air is supplemented and the redundant air is pumped out when the next packaging cycle is connected with the vacuum chamber one 3-1; opening the four electromagnetic valves 3-3 until the pressure is balanced and closed, wherein the second buffer tank 4 is lower than 3/5 atmospheric pressure, the second air pressure controller 1-3 does not work at the moment, and the air is supplemented and the redundant air is pumped out when the next packaging cycle is connected with the first vacuum chamber 3-1; opening the electromagnetic valve III 3-2 until the pressure is balanced and closed, wherein the first buffer tank 3 is lower than 4/5 atmospheric pressure, the first air pressure controller 1-2 does not work at the moment, and the air is supplemented and the redundant air is pumped out when the next packaging cycle is connected with the first vacuum chamber 3-1; and opening the first electromagnetic valve 3-11 until the pressure is balanced and closed, recovering the air pressure to 1 atmosphere, opening the first vacuum chamber 3-1, taking out the packaged objects, and putting new objects to be packaged into the vacuum chamber for the next packaging cycle.

Further, the packaging process of the four-section vacuum pumping technology single vacuum chamber is divided into 8 steps: taking out the finished packaged objects from the first vacuum chamber 3-1, loading the packaged objects to be packaged and closing the first vacuum chamber 3-1; the buffer tank I3 is connected, and the vacuum chamber I3-1 is decompressed; the buffer tank II 4 is connected, and the vacuum chamber I3-1 is decompressed; the buffer tank III 5 is connected, and the vacuum chamber I is decompressed by 3-1; connecting a vacuum tank 2, decompressing the vacuum chamber I3-1 and completing packaging; connecting a third buffer tank 5, and boosting the pressure of the first vacuum chamber 3-1; the buffer tank II 4 is connected, and the vacuum chamber I3-1 is pressurized; the buffer tank I3 is connected, and the vacuum chamber I3-1 is pressurized.

Further, the packaging process of the single vacuum chamber with the five-section vacuum pumping technology is divided into ten steps: taking out the finished packaged objects from the first vacuum chamber 3-1, loading the packaged objects to be packaged and closing the first vacuum chamber 3-1; the buffer tank I3 is connected, and the vacuum chamber I3-1 is decompressed; the buffer tank II 4 is connected, and the vacuum chamber I3-1 is decompressed; the buffer tank III 5 is connected, and the vacuum chamber I is decompressed by 3-1; the buffer tank IV 6 is connected, and the vacuum chamber I3-1 is decompressed; connecting a vacuum tank 2, decompressing the vacuum chamber I3-1 and completing packaging; connecting a buffer tank IV 6, and boosting the pressure of the vacuum chamber I by 3-1; connecting a third buffer tank 5, and boosting the pressure of the first vacuum chamber 3-1; the buffer tank II 4 is connected, and the vacuum chamber I3-1 is pressurized; the buffer tank I3 is connected, and the vacuum chamber I3-1 is pressurized.

Furthermore, each step of realizing continuous packaging needs one or more vacuum chamber units to work simultaneously, and the three-section vacuum pumping system needs six or integral multiple of six vacuum chamber units to work simultaneously; the continuous packaging needs one or more vacuum chambers to work simultaneously in each step, the packaging process of the single vacuum chamber with the four-section vacuum technology is divided into eight steps, the vacuum chambers with the integral multiple of eight or eight need to work simultaneously, the packaging process of the single vacuum chamber with the five-section vacuum technology is divided into ten steps, the vacuum chambers with the integral multiple of ten or ten need to work simultaneously, the packaging process of the single vacuum chamber with the N-section vacuum technology is divided into 2 XN steps, the vacuum chambers with the integral multiple of 2 XN or 2 XN need to work simultaneously, and all the vacuum chambers are uniformly distributed in different steps in the working process; each vacuum chamber unit is opened and closed with a corresponding electromagnetic valve according to the packaging working sequence, one-time packaging can be completed, eight or ten times of packaging circulation can be completed according to the working sequence, and all the vacuum chamber units are restored to the initial state; except the steps of connecting the vacuum tank 2 and taking out the packaged objects and loading the packaged objects into the vacuum tank, the vacuum chamber in the air pressure reduction stage and the vacuum chamber in the air pressure rise stage are simultaneously connected with the corresponding buffer tanks through electromagnetic valves to achieve pressure balance, and an air pressure controller does not need to be opened frequently; the electronic control system is matched to control a plurality of vacuum chambers and electromagnetic valves, and on-off time and sequence are distributed, so that continuous production can be realized, energy is saved, and efficiency is higher;

n is a natural number of 1 or more than 1;

the vacuum chamber unit may include a plurality of vacuum chambers.

Furthermore, the first pipeline 2-1, the second pipeline 2-2, the tenth pipeline 2-10 and/or the third pipeline 2-3 and/or the fourth pipeline 2-4 are connected with the first vacuum chambers through pipelines and a plurality of electromagnetic valves.

Furthermore, in order to prevent the gas pressure in the vacuum tank 2, the first buffer tank 3, the second buffer tank 4, the third buffer tank 5 and the fourth buffer tank 6 from generating large fluctuation, the volume of the vacuum tank 2, the first buffer tank 3, the second buffer tank 4, the third buffer tank 5 and the fourth buffer tank 6 is larger than that of the vacuum chamber assembly.

The principle of the segmented vacuumizing technology is as follows: the air pressure value required by normal pressure and vacuum packaging is uniformly divided into a plurality of sections, because the vacuum chamber which completes the task of sealing the vacuum packaging has low air pressure before the normal pressure is recovered and the air pressure of the vacuum chamber to be pumped is high, the vacuum chambers to be pumped in different stages are sequentially pumped by utilizing the vacuum chambers which complete the task of packaging in a segmented manner, the air pressure of the vacuum chambers to be pumped is increased in a segmented manner when the normal pressure is recovered, the packaged objects are taken out, and the air pressure of the vacuum chambers to be pumped is decreased in a segmented manner until the air. Most of the technology is a natural pressure balancing process, and only in the final stage of the air pressure reduction, the vacuum equipment needs to be pumped to the required vacuum degree, so that the energy consumption is little.

On the basis of the principle of an ideal state, the invention fully considers the practical application conditions, such as many factors of pipeline connection airtightness, complexity, air pressure change, mutual influence and the like, and optimizes the sectional vacuum pumping technical scheme. The optimized technical scheme adds the buffer tank and realizes the simplification of the vacuum pipeline.

The invention has reasonable structure, solves the problems of the existing vacuum packaging machine, and adopts the principle of the sectional vacuumizing technology: the air pressure value required by normal pressure and vacuum package is uniformly divided into a plurality of sections, the vacuum chamber I which completes the task of sealing the vacuum package is still in a low air pressure state before the normal pressure is recovered, the air pressure of the vacuum chamber I to be pumped is high, and the vacuum chamber I to be pumped in different stages is pumped by utilizing the vacuum chamber I which completes the task of packaging in a section mode. In the process, the vacuum chamber finishes the packaging task, the air pressure rises in sections until the normal pressure is recovered, the packaged object is taken out, the packaged object is placed in the vacuum chamber, a packaging cycle is finished, and the next vacuum packaging cycle is started. The air pressure of the vacuum chamber to be pumped is reduced in sections, the stage is a natural pressure balance process, and the vacuum chamber is pumped to the required vacuum degree by the vacuum pumping equipment only in the final stage of the air pressure reduction, so that the energy consumption is low.

Besides the above mentioned segmentation modes, the present invention can also select two or more segmentation modes according to the different difference between the air pressure required by vacuum packaging and the normal pressure, the reference efficiency, the cost and other factors. When in actual application, on the basis of ensuring energy conservation and high efficiency, the invention can increase a quantity of vacuum chambers according to the requirement of production capacity, realize continuous production and improve the yield. Moreover, the segmentation mode has wider applicability, can be applied to the generation of air pressure change or gas partial pressure change, such as the work of pressurizing and then depressurizing, inflation packaging and the like, and achieves the purposes of saving energy, high efficiency, saving air sources and the like.

The above description is illustrative of the present invention and is not to be construed as limiting thereof, as numerous modifications and variations therein will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. Interior odd test vacuum packaging machine segmentation vacuum pumping system, its characterized in that: the system comprises a three-section vacuumizing system and a multi-section vacuumizing system, wherein the three-section vacuumizing system comprises a single-vacuum-chamber working system and six-vacuum-chamber continuous packaging systems, and the multi-section vacuumizing system comprises a single-vacuum-chamber working system adopting a four-section vacuumizing technology, a single-vacuum-chamber working system adopting a five-section vacuumizing technology and a multi-vacuum-chamber continuous packaging system;

the single vacuum chamber working system of the three-section vacuum pumping system comprises the following components: the vacuum pump (1) is connected with the vacuum tank (2) through a pipeline and is controlled by the gas pressure control system (1-1), and the vacuum tank (2) is at the air pressure required by vacuum packaging; the vacuum tank (2) is connected with the first buffer tank (3) and the second buffer tank (4) through pipelines and is respectively controlled by the first air pressure controller (1-2) and the second air pressure controller (1-3); the first pipeline (2-1), the second pipeline (2-2) and the tenth pipeline (2-10) are respectively connected with the first buffer tank (3), the second buffer tank (4) and the vacuum tank (2); a packaging system required by vacuum packaging is arranged in the vacuum chamber I (3-1), the vacuum chamber I (3-1) is connected with the pipeline I (2-1), the pipeline II (2-2) and the pipeline III (2-10) through pipelines, and is controlled by the electromagnetic valve III (3-2), the electromagnetic valve IV (3-3) and the electromagnetic valve II (3-13) respectively and kept closed; the vacuum chamber I (3-1) is connected with the outside through a pipeline and is controlled and kept closed by the electromagnetic valve I (3-11); a pressure gauge (3-12) is arranged on the first vacuum chamber (3-1) and is used for observing the air pressure of the first vacuum chamber (3-1);

the single vacuum chamber working system of the four-section vacuum pumping technology comprises the following components: the vacuum pump (1) is connected with the vacuum tank (2) through a pipeline and is controlled by the gas pressure control system (1-1), and the vacuum tank (2) is at the air pressure required by vacuum packaging; the vacuum tank (2) is connected with the first buffer tank (3), the second buffer tank (4) and the third buffer tank (5) through pipelines and is respectively controlled by a first air pressure controller (1-2), a second air pressure controller (1-3) and a third air pressure controller (1-4); the first pipeline (2-1), the second pipeline (2-2), the third pipeline (2-3) and the tenth pipeline (2-10) are respectively connected with the first buffer tank (3), the second buffer tank (4), the third buffer tank (5) and the vacuum tank (2); a packaging system required by vacuum packaging is arranged in the vacuum chamber I (3-1), the vacuum chamber I (3-1) is connected with the pipeline I (2-1), the pipeline II (2-2), the pipeline III (2-3) and the pipeline VI (2-10) through pipelines, and is respectively controlled by the electromagnetic valve III (3-2), the electromagnetic valve IV (3-3), the electromagnetic valve V (3-4) and the electromagnetic valve II (3-13) and kept closed; the vacuum chamber I (3-1) is connected with the outside through a pipeline and is controlled and kept closed by the electromagnetic valve I (3-11); a pressure gauge (3-12) is arranged on the first vacuum chamber (3-1) and is used for observing the air pressure of the first vacuum chamber (3-1);

the single vacuum chamber working system of the five-section vacuum pumping technology comprises the following components: the vacuum pump (1) is connected with the vacuum tank (2) through a pipeline and is controlled by the gas pressure control system (1-1), and the vacuum tank (2) is at the air pressure required by vacuum packaging; the vacuum tank (2) is connected with the first buffer tank (3), the second buffer tank (4), the third buffer tank (5) and the fourth buffer tank (6) through pipelines and is respectively controlled by a first air pressure controller (1-2), a second air pressure controller (1-3), a third air pressure controller (1-4) and a fourth air pressure controller (1-5); the first pipeline (2-1), the second pipeline (2-2), the third pipeline (2-3), the fourth pipeline (2-4) and the tenth pipeline (2-10) are respectively connected with the first buffer tank (3), the second buffer tank (4), the third buffer tank (5), the fourth buffer tank (6) and the vacuum tank (2); a packaging system required by vacuum packaging is arranged in the vacuum chamber I (3-1), the vacuum chamber I (3-1) is connected with the pipeline I (2-1), the pipeline II (2-2), the pipeline III (2-3), the pipeline IV (2-4) and the pipeline IV (2-10) through pipelines, and is controlled by the electromagnetic valve III (3-2), the electromagnetic valve IV (3-3), the electromagnetic valve V (3-4), the electromagnetic valve VI (3-5) and the electromagnetic valve II (3-13) respectively and kept closed; the vacuum chamber I (3-1) is connected with the outside through a pipeline and is controlled and kept closed by the electromagnetic valve I (3-11); the first vacuum chamber (3-1) is provided with a pressure gauge (3-12) for observing the air pressure of the first vacuum chamber (3-1).

2. The vacuum sectionalizing system of the internally-pumped vacuum packing machine as claimed in claim 1, wherein: the working steps of the single vacuum chamber working system of the three-section vacuum pumping system comprise: step a, taking out the finished packaged objects from the first vacuum chamber (3-1), loading the objects to be packaged and closing the first vacuum chamber (3-1); b, connecting a first buffer tank (3), and decompressing the first vacuum chamber (3-1); c, connecting a second buffer tank (4), and decompressing the first vacuum chamber (3-1); d, connecting a vacuum tank (2), decompressing the vacuum chamber I (3-1) and completing packaging; e, connecting a second buffer tank (4), and boosting the pressure of the first vacuum chamber (3-1); step f, connecting a first buffer tank (3), and boosting the pressure of the first vacuum chamber (3-1);

pre-vacuumizing before work is started: the vacuum pump (1) operates, the vacuum tank (2) is pumped to 1/100 atmospheric pressure required by vacuum packaging, and the atmospheric pressure is kept stable by the gas pressure control system (1-1); pumping the buffer tank I (3) to the atmospheric pressure of 2/3 atmospheric pressure, and controlling the atmospheric pressure to be not higher than the atmospheric pressure by the air pressure controller I (1-2); pumping the second buffer tank (4) to the atmospheric pressure of 1/3 atmospheric pressure, and controlling the atmospheric pressure to be not higher than the atmospheric pressure by a second air pressure controller (1-3);

the working process is as follows: b, filling the vacuum chamber I (3-1) with the object to be packaged, and then closing the vacuum chamber I (3-1) to finish the step a; opening the electromagnetic valve III (3-2) until the pressure is balanced and closed, enabling the air pressure of the vacuum chamber I (3-1) and the air pressure of the buffer tank I (3) to be the same and higher than 2/3 atmospheric pressure, enabling the air pressure controller I (1-2) to work, pumping out part of air, reducing the air pressure of the buffer tank I (3) to 2/3 atmospheric pressure, and completing the step b; opening a fourth electromagnetic valve (3-3) until the pressure is balanced and closed, enabling the air pressure of the first vacuum chamber (3-1) and the air pressure of the second buffer tank (4) to be the same and higher than 1/3 atmospheric pressure, enabling a second air pressure controller (1-3) to work, pumping out partial air, and reducing the air pressure of the second buffer tank (4) to 1/3 atmospheric pressure to finish the step c; opening the second electromagnetic valve (3-13), enabling the gas pressure control system (1-1) to work until the atmospheric pressure is reduced to 1/100 atmospheric pressure, closing the second electromagnetic valve (3-13), and packaging the object to be packaged to finish the step d; opening a fourth electromagnetic valve (3-3) until the pressure is balanced and closed, wherein a second buffer tank (4) is lower than 1/3 atmospheric pressure, the second air pressure controller (1-3) does not work at the moment, and the air is supplemented and extracted when being connected with the first vacuum chamber (3-1) by the next packaging cycle to finish the step e; opening a third electromagnetic valve (3-2) until the pressure is balanced and closed, wherein the first buffer tank (3) is lower than 2/3 atmospheric pressure, the first air pressure controller (1-2) does not work at the moment, and the air is supplemented and extracted when being connected with the first vacuum chamber (3-1) by the next packaging cycle to finish the step f; opening the first electromagnetic valve (3-11) until the pressure is balanced and closed, recovering the air pressure to 1 atmosphere, opening the first vacuum chamber (3-1) to take out the packaged object, putting a new object to be packaged to complete the step a, and carrying out the next packaging cycle.

3. The vacuum sectionalizing system of the internally-pumped vacuum packing machine as claimed in claim 1, wherein: the realization of continuous packaging requires one or several vacuum chambers working simultaneously in each step; the three-section vacuum pumping system completes one packaging cycle, which is six steps, and requires six or integral multiple of six vacuum chambers to work simultaneously; the continuous working process of the six vacuum chamber continuous packaging system is as follows: the vacuum chamber unit comprises a first vacuum chamber unit, a second vacuum chamber unit, a third vacuum chamber unit, a fourth vacuum chamber unit, a fifth vacuum chamber unit and a sixth vacuum chamber unit; the vacuum chamber unit one includes: a vacuum chamber I (3-1), an electromagnetic valve I (3-11), an electromagnetic valve II (3-13), an electromagnetic valve III (3-2), an electromagnetic valve IV (3-3) and a pressure gauge (3-12); the vacuum chamber unit two includes: vacuum chamber two (4-1), second solenoid valve one (4-11), second solenoid valve two (4-13), second solenoid valve three (4-2), second solenoid valve four (4-3), second manometer (4-12), vacuum chamber unit three includes: a vacuum chamber III (5-1), a third electromagnetic valve I (5-11), a third electromagnetic valve II (5-13), a third electromagnetic valve III (5-2), a third electromagnetic valve IV (5-3) and a third pressure gauge (5-12), wherein the vacuum chamber unit IV comprises: vacuum chamber four (6-1), fourth solenoid valve one (6-11), fourth solenoid valve two (6-13), fourth solenoid valve three (6-2), fourth solenoid valve four (6-3), fourth manometer (6-12), vacuum chamber unit five includes: a vacuum chamber five (7-1), a fifth electromagnetic valve one (7-11), a fifth electromagnetic valve two (7-13), a fifth electromagnetic valve three (7-2), a fifth electromagnetic valve four (7-3), a fifth pressure gauge (7-12), and a vacuum chamber unit six comprising: a vacuum chamber six (8-1), a sixth electromagnetic valve I (8-11), a sixth electromagnetic valve II (8-13), a sixth electromagnetic valve III (8-2), a sixth electromagnetic valve IV (8-3) and a sixth pressure gauge (8-12); the vacuum chamber unit I, the vacuum chamber unit II, the vacuum chamber unit III, the vacuum chamber unit IV, the vacuum chamber unit V and the vacuum chamber unit VI are respectively connected with the pipeline I (2-1), the pipeline II (2-2) and the pipeline VI (2-10); in the continuous packaging process, after the packaging system runs stably, the buffer tank I (3), the buffer tank II (4) and the vacuum tank (2) are all in the air pressure of a normal working state, and the initial states of the vacuum chamber unit I, the vacuum chamber unit II, the vacuum chamber unit III, the vacuum chamber unit IV, the vacuum chamber unit V and the vacuum chamber unit VI are as follows: the first vacuum chamber unit is closed after the first vacuum chamber (3-1) is filled with the objects to be packaged, and the air pressure of the first vacuum chamber (3-1) is 1 atmosphere, namely the step a is finished; the vacuum chamber unit II is connected with the buffer tank I (3), and the air pressure of the vacuum chamber II (4-1) is 2/3 atmospheric pressure, namely the step b is completed; the vacuum chamber unit III is connected with the buffer tank II (4), and the air pressure of the vacuum chamber III (5-1) is 1/3 atmospheric pressure, namely the step c is finished; the vacuum chamber unit IV is connected with the vacuum tank (2), the set air pressure value is reached, the packaging is completed, the air pressure of the vacuum chamber IV (6-1) is 1/100 atmospheric pressure, and the step d is completed; the vacuum chamber unit V is connected with the buffer tank II (4), and the air pressure of the vacuum chamber V (7-1) is 1/3 atmospheric pressure, namely the step e is completed; the vacuum chamber unit six is connected with the buffer tank I (3), and the air pressure of the vacuum chamber six (8-1) is 2/3 atmospheric pressure, namely the step f is completed;

the following solenoid valves are only required to be opened and closed simultaneously to complete one-time product packaging: a third electromagnetic valve (3-2), a fourth second electromagnetic valve (4-3), a second third electromagnetic valve (5-13), a fourth electromagnetic valve (6-3), a third fifth electromagnetic valve (7-2) and a first sixth electromagnetic valve (8-11); the specific process is as follows: opening a third electromagnetic valve (3-2) and a fifth electromagnetic valve (7-2), simultaneously connecting a first vacuum chamber (3-1) and a fifth vacuum chamber (7-1) with a first buffer tank (3), after pressure is balanced, the air pressure value is slightly higher than 2/3 atmospheric pressure, closing the third electromagnetic valve (3-2) and the fifth electromagnetic valve (7-2), enabling a first air pressure controller (1-2) to work, reducing the first buffer tank (3) to 2/3 atmospheric pressure, closing the first air pressure controller (1-2), completing the step b by the first vacuum chamber unit, and completing the step f by the fifth vacuum chamber unit; opening a fourth electromagnetic valve (4-3) and a fourth electromagnetic valve (6-3), connecting a second vacuum chamber (4-1) and the fourth vacuum chamber (6-1) with a second buffer tank (4) at the same time, after the pressure is balanced, the air pressure value is slightly higher than 1/3 atmospheric pressure, closing the fourth electromagnetic valve (4-3) and the fourth electromagnetic valve (6-3), operating a second air pressure controller (1-3), reducing the second buffer tank (4) to 1/3 atmospheric pressure, closing the second air pressure controller (1-3), completing the step c by the second vacuum chamber unit, and completing the step e by the fourth vacuum chamber unit; opening a second third electromagnetic valve (5-13), connecting a third vacuum chamber (5-1) with the vacuum tank (2), enabling the gas pressure control system (1-1) to work until the atmospheric pressure is reduced to 1/100 atmospheric pressure, closing the second third electromagnetic valve (5-13), packaging the object to be packaged, and completing the step d by a third vacuum chamber unit; opening the first sixth electromagnetic valve (8-11), connecting the sixth vacuum chamber (8-1) with the outside, recovering the air pressure to 1 atmosphere after the pressure is balanced, closing the first sixth electromagnetic valve (8-11), opening the sixth vacuum chamber (8-1), taking out the packaged object, putting a new object to be packaged into the object, closing the sixth vacuum chamber (8-1), and completing the step a by the sixth vacuum chamber unit; after the process is finished, each vacuum chamber unit respectively finishes one working step in sequence, and six vacuum chamber units finish six different steps of a packaging cycle; each vacuum chamber unit opens and closes the next electromagnetic valve according to the packaging work sequence, then the next product packaging can be carried out, and a packaging cycle can be completed every six times of product packaging according to the work sequence; because the step a and the step d in the six packaging steps are longer in completion time, and the other steps are shorter in time, the packaging speed can be doubled by simultaneously operating a plurality of vacuum chamber units in each step.

4. The vacuum sectionalizing system of the internally-pumped vacuum packing machine as claimed in claim 1, wherein: the working process of the single vacuum chamber working system of the four-section vacuum pumping technology is as follows: pre-vacuumizing: the vacuum pump (1) operates, the vacuum tank (2) is pumped to 1/100 atmospheric pressure required by vacuum packaging, and the atmospheric pressure is kept stable by the gas pressure control system (1-1); pumping the buffer tank I (3) to the atmospheric pressure of 3/4 atmospheric pressure, and controlling the atmospheric pressure to be not higher than the atmospheric pressure by the air pressure controller I (1-2); pumping the second buffer tank (4) to the atmospheric pressure of 1/2 atmospheric pressure, and controlling the atmospheric pressure to be not higher than the atmospheric pressure by a second air pressure controller (1-3); pumping the buffer tank III (5) to the air pressure of 1/4 atmospheric pressure, and controlling the air pressure to be not higher than the value by an air pressure controller III (1-4);

after the vacuum chamber I (3-1) is filled with the object to be packaged, closing the vacuum chamber I (3-1); opening a third electromagnetic valve (3-2) until the pressure is balanced and closed, wherein the air pressure of the first vacuum chamber (3-1) and the first buffer tank (3) is the same and higher than 3/4 atmospheric pressure, a first air pressure controller (1-2) works to pump out partial air, and the first buffer tank (3) is reduced to 3/4 atmospheric pressure; opening a fourth electromagnetic valve (3-3) until the pressure is balanced and closed, enabling the air pressure of the first vacuum chamber (3-1) and the second buffer tank (4) to be the same and higher than 1/2 atmospheric pressure, enabling a second air pressure controller (1-3) to work, pumping out partial air, and reducing the second buffer tank (4) to 1/2 atmospheric pressure; opening a fifth electromagnetic valve (3-4) until the pressure is balanced and closed, enabling the air pressure of the first vacuum chamber (3-1) and the air pressure of the third buffer tank (5) to be the same and higher than 1/4 atmospheric pressure, enabling a third air pressure controller (1-4) to work, pumping out partial air, and reducing the air pressure of the third buffer tank (5) to 1/4 atmospheric pressure; opening the second electromagnetic valve (3-13), enabling the gas pressure control system (1-1) to work until the atmospheric pressure is reduced to 1/100 atmospheric pressure, closing the second electromagnetic valve (3-13), and packaging the object to be packaged; opening a fifth electromagnetic valve (3-4) until the pressure is balanced and closed, wherein a third buffer tank (5) is lower than 1/4 atmospheric pressure, the third air pressure controller (1-4) does not work at the moment, and the air is supplemented and the redundant air is pumped out when the next packaging cycle is connected with the first vacuum chamber (3-1); opening the fourth electromagnetic valve (3-3) until the pressure is balanced and closed, wherein the second buffer tank (4) is lower than 1/2 atmospheric pressure, the second air pressure controller (1-3) does not work at the moment, and the air is supplemented and the redundant air is pumped out when the next packaging cycle is connected with the first vacuum chamber (3-1); opening a third electromagnetic valve (3-2) until the pressure is balanced and closed, wherein the first buffer tank (3) is lower than 3/4 atmospheric pressure, the first air pressure controller (1-2) does not work at the moment, and the air is supplemented and the redundant air is pumped out when the next packaging cycle is connected with the first vacuum chamber (3-1); and opening the first electromagnetic valve (3-11) until the pressure is balanced and closed, recovering the air pressure to 1 atmosphere, opening the first vacuum chamber (3-1), taking out the packaged objects, and putting new objects to be packaged into the vacuum chamber for the next packaging cycle.

5. The vacuum sectionalizing system of the internally-pumped vacuum packing machine as claimed in claim 1, wherein: the working process of the single vacuum chamber working system of the five-section vacuumizing technology is as follows: pre-vacuumizing: the vacuum pump (1) operates, the vacuum tank (2) is pumped to 1/100 atmospheric pressure required by vacuum packaging, and the atmospheric pressure is kept stable by the gas pressure control system (1-1); pumping the buffer tank I (3) to the atmospheric pressure of 4/5 atmospheric pressure, and controlling the atmospheric pressure to be not higher than the atmospheric pressure by the air pressure controller I (1-2); pumping the second buffer tank (4) to the atmospheric pressure of 3/5 atmospheric pressure, and controlling the atmospheric pressure to be not higher than the atmospheric pressure by a second air pressure controller (1-3); pumping the buffer tank III (5) to the air pressure of 2/5 atmospheric pressure, and controlling the air pressure to be not higher than the value by an air pressure controller III (1-4); pumping the buffer tank IV (6) to the air pressure of 1/5 atmospheric pressure, and controlling the air pressure to be not higher than the value by an air pressure controller IV (1-5);

after the vacuum chamber I (3-1) is filled with the object to be packaged, closing the vacuum chamber I (3-1); opening a third electromagnetic valve (3-2) until the pressure is balanced and closed, wherein the air pressure of the first vacuum chamber (3-1) and the first buffer tank (3) is the same and higher than 4/5 atmospheric pressure, a first air pressure controller (1-2) works to pump out partial air, and the first buffer tank (3) is reduced to 4/5 atmospheric pressure; opening a fourth electromagnetic valve (3-3) until the pressure is balanced and closed, enabling the air pressure of the first vacuum chamber (3-1) and the air pressure of the second buffer tank (4) to be the same and higher than 3/5 atmospheric pressure, enabling a second air pressure controller (1-3) to work, pumping out partial air, and reducing the air pressure of the second buffer tank (4) to 3/5 atmospheric pressure; opening a fifth electromagnetic valve (3-4) until the pressure is balanced and closed, enabling the air pressure of the first vacuum chamber (3-1) and the air pressure of the third buffer tank (5) to be the same and higher than 2/5 atmospheric pressure, enabling a third air pressure controller (1-4) to work, pumping out partial air, and reducing the air pressure of the third buffer tank (5) to 2/5 atmospheric pressure; opening an electromagnetic valve six (3-5) until the pressure is balanced and closed, wherein the air pressure of the vacuum chamber I (3-1) and the air pressure of the buffer tank IV (6) are the same and higher than 1/5 atmospheric pressure, a pneumatic controller IV (1-5) works, part of air is pumped out, and the air pressure of the buffer tank IV (6) is reduced to 1/5 atmospheric pressure; opening the second electromagnetic valve (3-13), enabling the gas pressure control system (1-1) to work until the atmospheric pressure is reduced to 1/100 atmospheric pressure, closing the second electromagnetic valve (3-13), and packaging the object to be packaged; opening a sixth electromagnetic valve (3-5) until the pressure is balanced and closed, wherein a fourth buffer tank (6) is lower than 1/5 atmospheric pressure, at the moment, an air pressure controller (1-5) does not work, and air is supplemented and redundant air is pumped out when the next packaging cycle is connected with the first vacuum chamber (3-1); opening a fifth electromagnetic valve (3-4) until the pressure is balanced and closed, wherein a third buffer tank (5) is lower than 2/5 atmospheric pressure, the third air pressure controller (1-4) does not work at the moment, and the air is supplemented and the redundant air is pumped out when the next packaging cycle is connected with the first vacuum chamber (3-1); opening the fourth electromagnetic valve (3-3) until the pressure is balanced and closed, wherein the second buffer tank (4) is lower than 3/5 atmospheric pressure, the second air pressure controller (1-3) does not work at the moment, and the air is supplemented and the redundant air is pumped out when the next packaging cycle is connected with the first vacuum chamber (3-1); opening a third electromagnetic valve (3-2) until the pressure is balanced and closed, wherein the first buffer tank (3) is lower than 4/5 atmospheric pressure, the first air pressure controller (1-2) does not work at the moment, and the air is supplemented and the redundant air is pumped out when the next packaging cycle is connected with the first vacuum chamber (3-1); and opening the first electromagnetic valve (3-11) until the pressure is balanced and closed, recovering the air pressure to 1 atmosphere, opening the first vacuum chamber (3-1), taking out the packaged objects, and putting new objects to be packaged into the vacuum chamber for the next packaging cycle.

6. The vacuum sectionalizing system of the internally-pumped vacuum packing machine as claimed in claim 1, wherein: the packaging process of the four-section vacuum-pumping technology single vacuum chamber comprises eight steps: taking out the finished packaged objects from the first vacuum chamber (3-1), loading the objects to be packaged and closing the first vacuum chamber (3-1); the buffer tank I (3) is connected, and the vacuum chamber I (3-1) is decompressed; the buffer tank II (4) is connected, and the vacuum chamber I (3-1) is decompressed; connecting a third buffer tank (5), and decompressing the first vacuum chamber (3-1); connecting a vacuum tank (2), decompressing the first vacuum chamber (3-1) and completing encapsulation; connecting a third buffer tank (5), and boosting the pressure of the first vacuum chamber (3-1); the buffer tank II (4) is connected, and the vacuum chamber I (3-1) is pressurized; the first buffer tank (3) is connected, and the first vacuum chamber (3-1) is pressurized.

7. The vacuum sectionalizing system of the internally-pumped vacuum packing machine as claimed in claim 1, wherein: the packaging process of the single vacuum chamber with the five-section vacuum pumping technology comprises ten steps: taking out the finished packaged objects from the first vacuum chamber (3-1), loading the objects to be packaged and closing the first vacuum chamber (3-1); the buffer tank I (3) is connected, and the vacuum chamber I (3-1) is decompressed; the buffer tank II (4) is connected, and the vacuum chamber I (3-1) is decompressed; connecting a third buffer tank (5), and decompressing the first vacuum chamber (3-1); connecting a buffer tank IV (6), and decompressing the vacuum chamber I (3-1); connecting a vacuum tank (2), decompressing the first vacuum chamber (3-1) and completing encapsulation; the buffer tank IV (6) is connected, and the vacuum chamber I (3-1) is pressurized; connecting a third buffer tank (5), and boosting the pressure of the first vacuum chamber (3-1); the buffer tank II (4) is connected, and the vacuum chamber I (3-1) is pressurized; the first buffer tank (3) is connected, and the first vacuum chamber (3-1) is pressurized.

8. The vacuum sectionalizing system of the internally-pumped vacuum packing machine as claimed in claim 1, wherein: the realization of continuous packaging requires that one or more vacuum chambers work simultaneously in each step, and three-section vacuum pumping systems require six or integral multiples of six vacuum chambers to work simultaneously; the packaging process of the four-section vacuum pumping technology single vacuum chamber is divided into eight steps, eight or integral multiple of eight vacuum chambers are required to work simultaneously, the packaging process of the five-section vacuum pumping technology single vacuum chamber is divided into ten steps, ten or integral multiple of ten vacuum chambers are required to work simultaneously, the packaging process of the N-section vacuum pumping technology single vacuum chamber is divided into 2 xN steps, 2 xN or integral multiple of 2 xN vacuum chambers are required to work simultaneously, and all the vacuum chambers are uniformly distributed in different steps in the working process; each vacuum chamber unit is opened and closed with a corresponding electromagnetic valve according to the packaging working sequence, one-time packaging can be completed, eight or ten times of packaging circulation can be completed according to the working sequence, and all the vacuum chamber units are restored to the initial state; except the steps of connecting the vacuum tank (2) and taking out the packaged objects and loading the packaged objects into the vacuum chamber to be packaged, the vacuum chamber in the air pressure reduction stage and the vacuum chamber in the air pressure rising stage are simultaneously connected with the corresponding buffer tanks through electromagnetic valves to achieve pressure balance, and an air pressure controller does not need to be opened frequently; the electronic control system is matched to control a plurality of vacuum chambers and electromagnetic valves, and the on-off time and the sequence are distributed to realize continuous automatic production;

n is a natural number of 1 or more than 1;

the vacuum chamber unit includes a plurality of vacuum chambers.

9. The vacuum sectionalizing system of the internally-pumped vacuum packing machine as claimed in claim 1, wherein: the first pipeline (2-1), the second pipeline (2-2), the tenth pipeline (2-10) and/or the third pipeline (2-3) and/or the fourth pipeline (2-4) are connected with the first vacuum chambers through pipelines and a plurality of electromagnetic valves.

10. The vacuum sectionalizing system of the internally-pumped vacuum packing machine as claimed in claim 1, wherein: in order to prevent the air pressure in the vacuum tank (2), the first buffer tank (3), the second buffer tank (4), the third buffer tank (5) and the fourth buffer tank (6) from generating large fluctuation, the volumes of the vacuum tank (2), the first buffer tank (3), the second buffer tank (4), the third buffer tank (5) and the fourth buffer tank (6) are larger than the volume of the vacuum chamber assembly.