CN107826301A - The vacuum extractor of seal packing machine - Google Patents
The vacuum extractor of seal packing machine Download PDFInfo
- Publication number
- CN107826301A CN107826301A CN201711210529.6A CN201711210529A CN107826301A CN 107826301 A CN107826301 A CN 107826301A CN 201711210529 A CN201711210529 A CN 201711210529A CN 107826301 A CN107826301 A CN 107826301A
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- Prior art keywords
- push
- welded
- electric machine
- rod electric
- groove
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
- B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
- B65B31/025—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas specially adapted for rigid or semi-rigid containers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vacuum Packaging (AREA)
Abstract
The invention discloses a kind of vacuum extractor of seal packing machine, including base, the top both sides of base are welded with column, the top of two columns is welded with same crossbeam, the bottom of crossbeam opens up fluted, the first embedded groove is offered on the side inwall of groove, first embedded groove is installed with the first push-rod electric machine on the side inwall away from the first embedded groove notch, the output shaft of first push-rod electric machine extends in groove and is welded with head rod, vavuum pump is slidably fitted with groove, and vavuum pump mutually welds with head rod, flexible pipe is fixedly connected with vavuum pump, the bottom contact of flexible pipe has connecting tube.The present invention is easy to use, can change the position of vavuum pump by the first push-rod electric machine, and changes the height of capping by the second push-rod electric machine, so as to which capping is covered into vacuum chamber, is easy to go out the air pump drainage in vacuum chamber, simple to operate.
Description
Technical field
The present invention relates to seal packing machine technical field, more particularly to a kind of vacuum extractor of seal packing machine.
Background technology
Existing filling and sealing machine, after to container filling material, with regard to directly being sealed by closing device to container, but
It is the finished product that this mode is produced, a certain amount of air is present simultaneously toward contact in container, in the guarantor by the long period
After depositing, these air can cause bad influence to the material in container, cause the shelf-life of container contents significantly to reduce.
In order to extend the shelf-life of container contents, it is necessary to first be vacuumized to the container after filling material, then
Sealed again, therefore, it is necessary to add a vacuum step between filling step and sealing step, it is therefore desirable to filling
A vacuum device is added between device and closing device, and is increased between the filling station and sealed station of filling and sealing machine
Adding a station, existing vacuum extractor is all made up of vavuum pump and vacuum chamber, passes through vavuum pump to be vacuumized
When pipeline between vacuum chamber, the air pump drainage in vacuum chamber is gone out, but be again put into material in vacuum chamber, due to true
The placement location of empty room is not fixed, and vavuum pump is fixed position, so we can not be accurately by pipeline and vacuum chamber
Docked, so we have proposed the vacuum extractor of seal packing machine, it is set forth above for solving the problems, such as.
The content of the invention
The invention aims to solve shortcoming present in prior art, and the seal packing machine that proposes vacuumizes
Device.
To achieve these goals, present invention employs following technical scheme：
The vacuum extractor of seal packing machine, including base, the top both sides of the base are welded with column, two columns
Top is welded with same crossbeam, and the bottom of the crossbeam opens up fluted, and first is offered on the side inwall of the groove
Embedded groove, first embedded groove are installed with the first push-rod electric machine, institute on the side inwall away from the first embedded groove notch
The output shaft for stating the first push-rod electric machine extends in groove and is welded with head rod；
Vavuum pump is slidably fitted with the groove, and vavuum pump mutually welds with head rod, it is fixed on the vavuum pump to connect
Flexible pipe is connected to, the bottom contact of the flexible pipe has connecting tube, and flexible pipe and the outside fixed cover of connecting tube are provided with same connection
Block, placement block is placed with the top of the base, and places block and be provided with vacuum chamber, the top of the vacuum chamber is covered with envelope
Lid, and connecting tube through capping and is extended in vacuum chamber；
The bottom side of the crossbeam offers the second embedded groove, and is installed with second in the top inner wall of the second embedded groove
Push-rod electric machine, the output shaft of second push-rod electric machine extend to the lower section of crossbeam and are welded with the second connecting rod, and described second
The bottom of connecting rod is welded with expansion link, and one end of the expansion link is mutually welded with contiguous block.
Preferably, the side of first push-rod electric machine is welded with the first fixed plate, the corner position of first fixed plate
Put and offer the first bolt hole, the first bolt hole internal thread is connected with the first bolt, and first push-rod electric machine passes through
First bolt hole and the first bolt are fixedly mounted on side inwall of first embedded groove away from the first embedded groove notch.
Preferably, bar shaped post is welded with the top inner wall of the groove, and sliding panel is welded with the top of vavuum pump, institute
The top both sides for stating sliding panel are welded with clamping plate, and two clamping plate sides close to each other are welded with fixture block, the bar shaped post
Bottom be welded with transverse slat, the transverse slat is slidably connected between two clamping plates and with two fixture blocks.
Preferably, first through hole is offered on the contiguous block, and flexible pipe is fixed by first through hole with connecting tube and connected
Connect.
Preferably, the second through hole is offered in the capping, and the inwall of the second through hole is provided with the first sealing ring, it is described
Connecting tube is closely connected by the first sealing ring with the inwall of the second through hole.
Preferably, the bottom of the capping is installed with limiting plate, and third through-hole is offered on limiting plate, the company
Adapter is closely connected through third through-hole and with the inwall of third through-hole, and the bottom of the capping is surrounded by the second sealing ring,
And capping is closely connected by the second sealing ring with placing block.
Preferably, the second fixed plate, the corner position of second fixed plate are welded with the top of second push-rod electric machine
Put and offer the second bolt hole, the second bolt hole internal thread is connected with the second bolt, and second push-rod electric machine passes through
Second bolt hole and the second bolt are fixedly mounted in the top inner wall of the second embedded groove.
Compared with prior art, the beneficial effects of the invention are as follows：By base, column, crossbeam, groove, the first embedded groove,
First push-rod electric machine, head rod, vavuum pump, sliding panel, clamping plate, fixture block, transverse slat and bar shaped post are engaged, and vavuum pump passes through
Sliding panel is slidably mounted in groove, and the first push-rod electric machine can drive connecting rod to move, so as to drive vavuum pump
Move, by flexible pipe, contiguous block, connecting tube, place block, vacuum chamber, capping, the second embedded groove, the second push-rod electric machine, the
Two connecting rods and expansion link are engaged, and the second push-rod electric machine can drive the second connecting rod to move, then by expansion link with
First push-rod electric machine is engaged, it is possible to capping is covered into vacuum chamber, so as to which the air pump drainage in vacuum chamber is gone out.
The present invention is easy to use, can change the position of vavuum pump by the first push-rod electric machine, and pass through the second push rod electricity
Machine changes the height of capping, so as to which capping is covered into vacuum chamber, is easy to go out the air pump drainage in vacuum chamber, operates
Simply.
Brief description of the drawings
Fig. 1 is the structural representation of the vacuum extractor of seal packing machine proposed by the present invention；
Fig. 2 is the structure sectional view of the vacuum extractor of seal packing machine proposed by the present invention；
Fig. 3 be seal packing machine proposed by the present invention vacuum extractor in sliding panel structural representation；
Fig. 4 is the stereogram of the vacuum extractor of seal packing machine proposed by the present invention.
In figure：1 base, 2 columns, 3 crossbeams, 4 grooves, 5 first embedded grooves, 6 first push-rod electric machines, 7 head rods, 8
Vavuum pump, 9 sliding panels, 10 clamping plates, 11 fixture blocks, 12 transverse slats, 13 bar shaped posts, 14 flexible pipes, 15 contiguous blocks, 16 connecting tubes, 17 are placed
Block, 18 vacuum chambers, 19 cappings, 20 second embedded grooves, 21 second push-rod electric machines, 22 second connecting rods, 23 expansion links.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.
Reference picture 1-4, the vacuum extractor of seal packing machine, including base 1, the top both sides of base 1 are welded with vertical
Post 2, the tops of two columns 2 are welded with same crossbeam 3, and the bottom of crossbeam 3 opens up fluted 4, on the side inwall of groove 4
The first embedded groove 5 is offered, the first embedded groove 5 is installed with first on the side inwall away from the notch of the first embedded groove 5 and pushed away
Bar motor 6, the output shaft of the first push-rod electric machine 6 extend in groove 4 and are welded with head rod 7；
Vavuum pump 8 is slidably fitted with groove 4, and vavuum pump 8 welds with the phase of head rod 7, is fixedly connected with vavuum pump 8
Flexible pipe 14, the bottom contact of flexible pipe 14 has connecting tube 16, and flexible pipe 14 and the outside fixed cover of connecting tube 16 are provided with same company
Block 15 is connect, the top of base 1, which is placed with, places block 17, and places block 17 and be provided with vacuum chamber 18, the top covering of vacuum chamber 18
There is capping 19, and connecting tube 16 through capping 19 and is extended in vacuum chamber 18；
The bottom side of crossbeam 3 offers the second embedded groove 20, and is installed with the top inner wall of the second embedded groove 20
Two push-rod electric machines 21, the output shaft of the second push-rod electric machine 21 extend to the lower section of crossbeam 3 and are welded with the second connecting rod 22, and second
The bottom of connecting rod 22 is welded with expansion link 23, and one end of expansion link 23 and the phase of contiguous block 15 are welded, by base 1, column 2,
Crossbeam 3, groove 4, the first embedded groove 5, the first push-rod electric machine 6, head rod 7, vavuum pump 8, sliding panel 9, clamping plate 10, fixture block
11st, transverse slat 12 and bar shaped post 13 are engaged, and vavuum pump 8 is slidably mounted in groove 4 by sliding panel 9, and the first push-rod electric machine 6 can
To drive connecting rod 7 to move, so as to drive vavuum pump 8 to move, pass through flexible pipe 14, contiguous block 15, connecting tube
16th, block 17, vacuum chamber 18, the 19, second embedded groove 20 of capping, the second push-rod electric machine 21, the second connecting rod 22 and expansion link are placed
23 are engaged, and the second push-rod electric machine 21 can drive the second connecting rod 22 to move, then pass through the push rod of expansion link 23 and first
Motor 6 is engaged, it is possible to capping 19 is covered into vacuum chamber 18, so as to which the air pump drainage in vacuum chamber 18 is gone out,
The present invention is easy to use, can change the position of vavuum pump 8 by the first push-rod electric machine 6, and change by the second push-rod electric machine 21
Become the height of capping 19, so as to which capping 19 is covered into vacuum chamber 18, be easy to go out the air pump drainage in vacuum chamber 18,
It is simple to operate.
In the present invention, the side of the first push-rod electric machine 6 is welded with the first fixed plate, and the corner location of the first fixed plate is opened
Provided with the first bolt hole, the first bolt hole internal thread is connected with the first bolt, and the first push-rod electric machine 6 passes through the first bolt hole and
One bolt is fixedly mounted on side inwall of first embedded groove 5 away from the notch of the first embedded groove 5, in the top inner wall of groove 4
Bar shaped post 13 is welded with, and the top of vavuum pump 8 is welded with sliding panel 9, the top both sides of sliding panel 9 are welded with clamping plate 10,
Two clamping plates 10 side close to each other is welded with fixture block 11, and the bottom of bar shaped post 13 is welded with transverse slat 12, and transverse slat 12 is located at
It is slidably connected between two clamping plates 10 and with two fixture blocks 11, first through hole is offered on contiguous block 15, and flexible pipe 14 is with being connected
Pipe 16 is fixedly connected by first through hole, the second through hole is offered in capping 19, and the inwall of the second through hole is provided with first
Sealing ring, connecting tube 15 are closely connected by the first sealing ring with the inwall of the second through hole, are covered 19 bottom and are installed with
Limiting plate, and third through-hole is offered on limiting plate, connecting tube 15 closely connects through third through-hole and with the inwall of third through-hole
Connecing, the bottom for covering 19 is surrounded by the second sealing ring, and covers 19 and be closely connected by the second sealing ring with placing block 17, the
The top of two push-rod electric machines 21 is welded with the second fixed plate, and the corner location of the second fixed plate offers the second bolt hole, the
Two bolt hole internal threads are connected with the second bolt, and the second push-rod electric machine 21 is fixedly mounted on by the second bolt hole and the second bolt
In the top inner wall of second embedded groove 20, pass through base 1, column 2, crossbeam 3, groove 4, the first embedded groove 5, the first push-rod electric machine
6th, head rod 7, vavuum pump 8, sliding panel 9, clamping plate 10, fixture block 11, transverse slat 12 and bar shaped post 13 are engaged, and vavuum pump 8 is logical
Cross sliding panel 9 to be slidably mounted in groove 4, the first push-rod electric machine 6 can drive connecting rod 7 to move, so as to drive
Vavuum pump 8 moves, embedding by flexible pipe 14, contiguous block 15, connecting tube 16, placement block 17, vacuum chamber 18, capping 19, second
Enter groove 20, the second push-rod electric machine 21, the second connecting rod 22 and expansion link 23 to be engaged, the second push-rod electric machine 21 can drive second
Connecting rod 22 is moved, then is engaged by expansion link 23 with the first push-rod electric machine 6, it is possible to which capping 19 is covered into vacuum
Room 18, so as to which the air pump drainage in vacuum chamber 18 is gone out, the present invention is easy to use, can be with by the first push-rod electric machine 6
Change the position of vavuum pump 8, and change the height of capping 19 by the second push-rod electric machine 21, so as to which capping 19 is covered
Vacuum chamber 18, it is easy to go out the air pump drainage in vacuum chamber 18, it is simple to operate.
Operation principle：When covering vacuum chamber 18 using capping 19, first start the second push-rod electric machine 21, utilize the second push rod
Motor 21 can drive the second connecting rod 22 to be risen, and cause capping 19 to increase, and then restart the first push-rod electric machine 6,
Using the first push-rod electric machine 6 head rod 7 can be driven to move, and cause head rod 7 to drive vavuum pump 8 recessed
Enter line slip in groove 4, so that capping 19 is moved to the surface of vacuum chamber 18, then utilize the second push-rod electric machine 21
The second connecting rod 22 is driven to be declined so that capping 19 just falls on block 17 is placed and covers vacuum chamber 18, because envelope
The bottom surrounding of lid 19 is equipped with the second sealing ring, so when capping 19 covers vacuum chamber 18, vacuum chamber 18 will be sealed
Lid 19 seals, and finally starts vavuum pump 8, it is possible to the air pump drainage in vacuum chamber 18 is gone out, so as to extend vacuum chamber
The shelf-life of material in 18.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (7)
1. the vacuum extractor of seal packing machine, including base（1）, it is characterised in that base（1）Top both sides be welded with
Column（2）, two columns（2）Top be welded with same crossbeam（3）, crossbeam（3）Bottom open up it is fluted（4）, groove
（4）Side inwall on offer the first embedded groove（5）, the first embedded groove（5）Away from the first embedded groove（5）In the side of notch
The first push-rod electric machine is installed with wall（6）, the first push-rod electric machine（6）Output shaft extend to groove（4）It is interior and be welded with
Head rod（7）；
Groove（4）Inside it is slidably fitted with vavuum pump（8）, and vavuum pump（8）With head rod（7）Mutually weld, vavuum pump（8）On
It is fixedly connected with flexible pipe（14）, flexible pipe（14）Bottom contact have connecting tube（16）, and flexible pipe（14）With connecting tube（16）It is outer
Side fixed cover is provided with same contiguous block（15）, base（1）Top be placed with placement block（17）, and place block（17）It is provided with
Vacuum chamber（18）, vacuum chamber（18）Top covered with capping（19）, and connecting tube（16）Through capping（19）And extend to true
Empty room（18）It is interior；
Crossbeam（3）Bottom side offer the second embedded groove（20）, and the second embedded groove（20）Top inner wall on fixed peace
Equipped with the second push-rod electric machine（21）, the second push-rod electric machine（21）Output shaft extend to crossbeam（3）Lower section and be welded with second
Connecting rod（22）, the second connecting rod（22）Bottom be welded with expansion link（23）, expansion link（23）One end and contiguous block（15）
Mutually weld.
2. the vacuum extractor of seal packing machine according to claim 1, it is characterised in that the first push-rod electric machine（6）'s
Side is welded with the first fixed plate, and the corner location of the first fixed plate offers the first bolt hole, the first bolt hole internal thread
It is connected with the first bolt, the first push-rod electric machine（6）First embedded groove is fixedly mounted on by the first bolt hole and the first bolt（5）
Away from the first embedded groove（5）On the side inwall of notch.
3. the vacuum extractor of seal packing machine according to claim 1, it is characterised in that groove（4）Top inner wall
On be welded with bar shaped post（13）, and vavuum pump（8）Top be welded with sliding panel（9）, sliding panel（9）Top both sides weld
There is clamping plate（10）, two clamping plates（10）Side close to each other is welded with fixture block（11）, bar shaped post（13）Bottom be welded with
Transverse slat（12）, transverse slat（12）Positioned at two clamping plates（10）Between and with two fixture blocks（11）It is slidably connected.
4. the vacuum extractor of seal packing machine according to claim 1, it is characterised in that contiguous block（15）On offer
First through hole, and flexible pipe（14）With connecting tube（16）It is fixedly connected by first through hole.
5. the vacuum extractor of seal packing machine according to claim 1, it is characterised in that capping（19）On offer
Two through holes, and the inwall of the second through hole is provided with the first sealing ring, connecting tube（15）Pass through the first sealing ring and the second through hole
Inwall closely connects.
6. the vacuum extractor of seal packing machine according to claim 1, it is characterised in that capping（19）Bottom fix
Limiting plate is installed, and third through-hole is offered on limiting plate, connecting tube（15）Through third through-hole and with third through-hole
Wall closely connects, capping（19）Bottom be surrounded by the second sealing ring, and cover（19）By the second sealing ring with placing block
（17）Close connection.
7. the vacuum extractor of seal packing machine according to claim 1, it is characterised in that the second push-rod electric machine（21）'s
Top is welded with the second fixed plate, and the corner location of the second fixed plate offers the second bolt hole, the second bolt hole internal thread
It is connected with the second bolt, the second push-rod electric machine（21）Second embedded groove is fixedly mounted on by the second bolt hole and the second bolt
（20）Top inner wall on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711210529.6A CN107826301B (en) | 2017-11-28 | 2017-11-28 | Vacuum pumping device of sealing packaging machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711210529.6A CN107826301B (en) | 2017-11-28 | 2017-11-28 | Vacuum pumping device of sealing packaging machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107826301A true CN107826301A (en) | 2018-03-23 |
| CN107826301B CN107826301B (en) | 2023-05-12 |
Family
ID=61645963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711210529.6A Active CN107826301B (en) | 2017-11-28 | 2017-11-28 | Vacuum pumping device of sealing packaging machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107826301B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108499191A (en) * | 2018-04-04 | 2018-09-07 | 黄域辰 | A kind of sludge dehydration device |
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|---|---|---|---|---|
| CN2558587Y (en) * | 2002-02-09 | 2003-07-02 | 东信国际有限公司 | Vacuum packing bag leveling machine |
| KR20080001472U (en) * | 2006-11-28 | 2008-06-02 | 주식회사 제로팩 | Clip apparatus and clip type vacuum storage equipment using the same |
| US20100224281A1 (en) * | 2006-06-20 | 2010-09-09 | Bridgestone Corporation | Sealing pump-up device |
| CN203094503U (en) * | 2013-02-26 | 2013-07-31 | 邬良方 | Vacuum garbage packing machine |
| CN203624022U (en) * | 2013-12-24 | 2014-06-04 | 项森龙 | Vacuum food packaging machine |
| CN204701806U (en) * | 2015-06-03 | 2015-10-14 | 太仓鑫昌光电材料有限公司 | One can mobile vacuum wrapping machine |
| CN204979345U (en) * | 2015-06-25 | 2016-01-20 | 浙江英标菇品有限公司 | Vacuum packaging equipment vacuum heat sealing machine constructs |
| CN107010259A (en) * | 2017-04-19 | 2017-08-04 | 陈富强 | A kind of vacuum packing machine |
| CN207550598U (en) * | 2017-11-28 | 2018-06-29 | 江西沃野绿色食品有限公司 | The vacuum extractor of seal packing machine |
-
2017
- 2017-11-28 CN CN201711210529.6A patent/CN107826301B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2558587Y (en) * | 2002-02-09 | 2003-07-02 | 东信国际有限公司 | Vacuum packing bag leveling machine |
| US20100224281A1 (en) * | 2006-06-20 | 2010-09-09 | Bridgestone Corporation | Sealing pump-up device |
| KR20080001472U (en) * | 2006-11-28 | 2008-06-02 | 주식회사 제로팩 | Clip apparatus and clip type vacuum storage equipment using the same |
| CN203094503U (en) * | 2013-02-26 | 2013-07-31 | 邬良方 | Vacuum garbage packing machine |
| CN203624022U (en) * | 2013-12-24 | 2014-06-04 | 项森龙 | Vacuum food packaging machine |
| CN204701806U (en) * | 2015-06-03 | 2015-10-14 | 太仓鑫昌光电材料有限公司 | One can mobile vacuum wrapping machine |
| CN204979345U (en) * | 2015-06-25 | 2016-01-20 | 浙江英标菇品有限公司 | Vacuum packaging equipment vacuum heat sealing machine constructs |
| CN107010259A (en) * | 2017-04-19 | 2017-08-04 | 陈富强 | A kind of vacuum packing machine |
| CN207550598U (en) * | 2017-11-28 | 2018-06-29 | 江西沃野绿色食品有限公司 | The vacuum extractor of seal packing machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108499191A (en) * | 2018-04-04 | 2018-09-07 | 黄域辰 | A kind of sludge dehydration device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107826301B (en) | 2023-05-12 |
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