CN102522223B - Controllable filling method for vacuum filling - Google Patents
Controllable filling method for vacuum filling Download PDFInfo
- Publication number
- CN102522223B CN102522223B CN2011103521825A CN201110352182A CN102522223B CN 102522223 B CN102522223 B CN 102522223B CN 2011103521825 A CN2011103521825 A CN 2011103521825A CN 201110352182 A CN201110352182 A CN 201110352182A CN 102522223 B CN102522223 B CN 102522223B
- Authority
- CN
- China
- Prior art keywords
- syringe needle
- liquid material
- vacuum
- main control
- workpiece
- Prior art date
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The invention relates to a controllable filling method for vacuum filling, which comprises the following steps that: an inner needle head (10) of a double-layer needle head is firstly connected with the cavity of a workpiece to be filled to ensure that the inner needle head (10) is connected to the inner part of the hole of a main control room of a needle valve without applying an externally-applied control air pressure to enable the needle valve to be kept in a closing state, the inner needle head (10) of the double-layer needle head is connected with the cavity of the workpiece to be filled, and a closed cavity body is formed by the main control room (6) of the needle valve, the inner needle head (10) and the cavity of the workpiece to be filled; a vacuum-accessing pipe (1) is connected with a vacuum negative pressure, and vacuum pumping is carried out through an outer needle head (12); filling is carried out when a required vacuum degree is achieved; after a liquid material is filled in the cavity body of the workpiece to be filled, positive-pressure nitrogen gas is accessed by using the vacuum-accessing pipe (1), the nitrogen gas reaches the open hole of the filled workpiece through the outer needle head (12), and the liquid material in the inner needle head is pressed back to a liquid-material storing room (9) under the pressure of the nitrogen gas; and the controllable filling method can be used for the connection of a vacuum-filling pipeline and the open hole of a filled device.
Description
Technical field
The present invention relates to the vacuum filling technical field, be specifically related to a kind of for dye-sensitized solar cells prevent device that vacuum filling plane micropore that electrolyte is drawn into vacuum pump and jockey and other device perforate to be filled that needs vacuum filling liquid of can pipeline be connected with the can pipeline with
Controlled packaging process
Background technology
In vacuum filling, prevent that it is a kind of very necessary operation control procedure that liquid material is drawn into vacuum pump, can be widely used in the vacuum filling of all liquid.At present, often adopt triple valve control negative pressure of vacuum and liquid material stream, the employing single needle is connected between device perforate to be filled and can pipeline, and this mode can be brought following adverse consequences:
(1) can not reclaim the liquid material that remains between syringe needle and the triple valve, cause the waste of liquid material;
(2) after finishing can for the first time, the liquid material that remains between syringe needle and the triple valve can be drawn into vacuum pump when second time can, and the liquid material that enters vacuum pump can be corroded vacuum pump, be affected vacuum degree and the useful life of vacuum pump;
(3) if filling liquid has stronger toxicity and can not reclaim, that will give the staff healthyly brings threat.
In sum, prevent that the vacuum filling jockey that liquid material is drawn into vacuum pump from being very necessary.
Summary of the invention
The present invention seeks to: overcome above-mentioned the deficiencies in the prior art, provide a kind of prevent vacuum filling jockey that liquid material is drawn into vacuum pump with
Controlled packaging process, especially dye-sensitized solar cells prevents that electrolyte is drawn into the vacuum filling of vacuum pump
Controlled packaging processSolve the liquid material waste that occurs in the conventional vacuum filling, be drawn into the liquid material of vacuum pump to the reduction of the burn into vacuum degree of vacuum pump, the shortening in useful life, the liquid material that do not reclaim to the healthy can difficult problem that constitutes a threat to of staff.
Technical solution of the present invention is: vacuum filling
Controlled packaging process,The liquid material input system is comprised of liquid material storage chamber and needle valve, and the motion of needle valve by the control pin realizes pouring into the liquid material of main control room; Formed by inside and outside two-layer passage (inside and outside syringe needle) with the double-deck syringe needle that is connected by can device cavity, interior syringe needle is realized fluid-filling, outer syringe needle vacuumizes and introduces external pressure and reclaims liquid material, the outer attached sealing ring of syringe needle outside, sealing ring is isolated with inside and outside syringe needle and ambient atmosphere, interior syringe needle one end enters to be connected with main control room by the can workpiece perforate other end and carries out the can of liquid material, and inside and outside syringe needle is being communicated by can workpiece tapping; Job step is as follows: at first the interior syringe needle (10) with double-deck syringe needle is connected with the cavity of workpiece to be filled, the hole of the main control room of syringe needle (10) access needle valve in guaranteeing, do not apply needle valve (7) maintenance closed condition when adding control air pressure, the interior syringe needle (10) of double-deck syringe needle is connected needle valve main control room (6), interior syringe needle (10) and workpiece to be filled chamber and forms a closed cavity with the cavity of workpiece to be filled; Vacuum access tube (1) links to each other with negative pressure of vacuum, vacuumizes by outer syringe needle (12); When reaching the vacuum degree that needs, vacuum access tube (1) is closed, open needle valve (7) by the control pin (4) that adds control air pressure control needle valve, liquid material enters main control room (6) from the pipeline that needle valve control pin unclamps from liquid material apotheca (9), and under the effect of negative pressure, enter the cavity of workpiece to be filled by interior syringe needle (10), carry out can; Be full of the cavity of workpiece to be filled when liquid material after, use the nitrogen of vacuum access tube (1) access malleation, nitrogen arrives can workpiece tapping by outer syringe needle (12), and under the pressure of nitrogen, the liquid material in the interior syringe needle is pushed back liquid material apotheca (9); Disconnection adds control air pressure, and needle valve (7) is closed, and liquid material apotheca (9) disconnects with main control room and can workpiece, and can is finished; Control pin (4) is as the switch pin of needle valve, and the control liquid material enters main control room; The effect of outer syringe needle (12) has two, and one is to vacuumize, and another is to introduce to add air pressure liquid material is reclaimed; Additional gas pressure-controlled chamber (3) is a cavity that has piston and fixing cylinder wall to consist of, and adds control air pressure UNICOM, adds control air pressure by applying, and with the spring piston compression, drives the control pin with liquid material apotheca and main control room connection; Vacuum access tube (1) one end is connected with outer syringe needle (12), and the other end is connected with negative pressure of vacuum when vacuumizing, and is connected with nitrogen when reclaiming liquid material; Spring piston (2) is comprised of spring and piston, in order to reduce the resistance of piston movement, uses oil lubrication between piston and cylinder wall.
Vacuum access tube (1) not only can be used as the access port of negative pressure of vacuum but also can be used as the access port of adscititious gases (nitrogen), and had closing function.
Can use control pin (4) the control liquid material of different-diameter to enter main control room (6).
Vacuum filling
The device of controlled can:Prevent that liquid material is drawn into the vacuum filling jockey of vacuum pump, comprise vacuum and external pressure access tube, additional gas pressure control system, main control room, liquid material input system, the double-deck syringe needle that is connected with workpiece cavity to be filled; Vacuum links to each other with external pressure with vacuum (negative pressure) with external pressure access tube one end, and the other end is connected with the outer syringe needle of double-deck syringe needle, workpiece cavity to be filled is vacuumized with follow-up adscititious gases liquid material in the syringe needle is reclaimed; The additional gas pressure control system is comprised of piston, additional gas pressure-controlled chamber, needle valve and the control pin with spring, the piston of additional gas pressure-controlled chamber connecting band spring, the unlatching of the control pin of gas piston linkage needle valve makes the liquid material input system be communicated with the main control room of needle valve or closes; Main control room one end links to each other with the internal layer of double-deck syringe needle, and the other end links to each other with the liquid material input system with the passage of the control pin of needle valve; Formed by inside and outside two-layer passage (inside and outside syringe needle) with the double-deck syringe needle that is connected by can device cavity, interior syringe needle is realized fluid-filling, outer syringe needle vacuumizes and introduces external pressure and reclaims liquid material, the outer attached sealing ring of syringe needle outside, and sealing ring completely cuts off inside and outside syringe needle and ambient atmosphere.Interior syringe needle one end enters to be connected with main control room by the can workpiece perforate other end and carries out the can of liquid material, and inside and outside syringe needle is being communicated by can workpiece tapping; Main control room is realized the control to can by coordinating additional gas pressure control system and liquid material input system; The motion of needle valve by the control pin realizes pouring into the liquid material of main control room.
During use, do not apply and add control air pressure, the control syringe needle disconnects interior syringe needle and liquid material, vacuumizes by outer syringe needle, after vacuum degree reaches requirement, the vacuum access tube is closed; Apply and add control air pressure, spring piston is compressed, and the control pin is connected liquid material apotheca liquid material and interior syringe needle, realizes the fluid-filling to workpiece; After pouring into liquid material fully, vacuum access tube access external pressure pushes back the liquid material apotheca with the liquid material in the interior syringe needle, reclaims liquid material; Disconnection adds control air pressure, and the control pin disconnects interior syringe needle and liquid material apotheca, and can finishes.
The invention has the beneficial effects as follows: compared with prior art have the following advantages,
(1) the present invention utilizes double-deck syringe needle with gas circuit and liquid road separately, vacuumizes the break-make on gas circuit and can liquid road by the additional gas pressure-controlled, has realized respectively control in time.
(2) outer syringe needle can be introduced external pressure liquid material is reclaimed by interior syringe needle, with liquid material suction vacuum pump, has reduced the waste of liquid material when having avoided for the second time can.
(3) enter vacuum pump owing to liquid material can not occur, so avoided the liquid material of suction vacuum pump on the impact of the decline of vacuum pump vacuum degree, the lost of life etc.
(4) by the additional gas pressure control system, can stop can at any time, can realize after the part can liquid material keeping on container filling top vacuum.
(5) apparatus of the present invention are simple, easy and simple to handle, and the device fabrication cost is low, and the device uptime is long, and system is more stable, suitable little, in, the can of main equipment.
Description of drawings
Fig. 1 is that the liquid material that prevents of the present invention is drawn into the vacuum filling jockey overall structure schematic diagram of vacuum pump.
To prepare and the suction state before the can shown in Fig. 2 a.
It is the state that carries out the can liquid material shown in Fig. 2 b.
Liquid material shown in Fig. 2 c is pushed back liquid material apotheca state, and can is finished.
Among the figure: 1-vacuum access tube, 2-spring piston, 3-additional gas pressure-controlled chamber, 4-control pin, 5-add control air pressure access tube, 6-main control room, 7-needle valve, 8-by syringe needle, 11-controller housing, the outer syringe needle of 12-, 13-sealing ring in can liquid material interface, 9-liquid material apotheca, the 10-.
Embodiment
In order to understand better the present invention, below in conjunction with accompanying drawing 1,2 the invention will be further described.
As shown in Figure 1, the vacuum filling jockey that prevents that liquid material is drawn into vacuum pump of the present invention comprise vacuum access tube (1), spring piston (2), additional gas pressure-controlled chamber (3), control pin (4), add control air pressure access tube (5), main control room (6), needle valve (7), by can liquid material interface (8), liquid material apotheca (9), interior syringe needle (10), controller housing (11), outer syringe needle (12), sealing ring (13).
Described additional gas pressure-controlled chamber (3) one ends are that fixedly the wall other end is spring piston (2), and have a perforate with add control the air pressure access tube (5) be connected, aerating pressure-controlled chamber (3) is passed by control pin (4), and aerating pressure-controlled chamber (3) is porose to be controlled air pressure access tube (5) and be connected with adding;
Described control pin (4) the one ends other end that is connected with spring piston (2) is connected with needle valve (7), and passes air pressure control room (3) and main control room (6);
Described main control room (6) is controlled pin (4) and is passed, the two ends of the control pin (4) that passes and main control room (3) and liquid material apotheca (9) sealing, and the porose and interior syringe needle of main control room (6) (10) is connected;
Described liquid material apotheca (9) one ends be connected with needle valve (7) other end be connected by can liquid material interface (8);
Described interior syringe needle (10) the one ends other end that is connected with main control room (7) enters by the perforate of can device;
Described outer syringe needle (12) one ends be connected with vacuum access tube (1) other end be connected by the perforate of can device; Vacuum tube access tube (1) other end is connected with negative pressure of vacuum when vacuumizing, and is connected with nitrogen when reclaiming liquid material;
The external diameter of interior syringe needle (10) is than little by can device perforate internal diameter.
Outer syringe needle (12) does not enter by the perforate of can device, and namely outer syringe needle is shorter than interior syringe needle.
Spring piston (2), additional gas pressure-controlled chamber (3), control pin (4), main control room (6), needle valve (7) and liquid material apotheca (9) are integrated in the controller housing (11).
Described spring piston (2) is comprised of spring and piston, the spring one end other end that is connected with wall is connected with piston, piston one end be connected with spring the other end with control pin (6) be connected, an end of piston directly contacts with additional gas pressure-controlled chamber (3); Spring piston (2) is comprised of spring and piston, in order to reduce the resistance of piston movement, uses oil lubrication between piston and cylinder wall.
Described additional gas pressure-controlled chamber (3) one ends are that fixedly the wall other end is spring piston (2), and have a perforate with add control the air pressure access tube (5) be connected, aerating pressure-controlled chamber (3) is passed by control pin (4), and aerating pressure-controlled chamber (3) is porose to be controlled air pressure access tube (5) and be connected with adding; Additional gas pressure-controlled chamber (3) is a cavity that has piston and fixing cylinder wall to consist of, and adds control air pressure UNICOM, adds control air pressure by applying, and with the spring piston compression, drives the control pin with liquid material apotheca and main control room connection; Control pin (4) is as the switch pin of needle valve, and the control liquid material enters main control room; The effect of outer syringe needle (12) has two, and one is to vacuumize, and another is to introduce to add air pressure liquid material is reclaimed.
When the present invention needs filling liquid, shown in Fig. 2 a, at first the interior syringe needle (10) with double-deck syringe needle is connected with the cavity of workpiece to be filled, syringe needle (10) enters the hole of main control room in guaranteeing, sealing ring (13) good seal, do not apply and add control air pressure, needle valve (7) keeps closed condition (spring piston does not compress), main control room (6), interior syringe needle (10) and workpiece to be filled chamber form a closed cavity, vacuum access tube (1) links to each other with negative pressure of vacuum, vacuumizes by outer syringe needle (12); When reaching the vacuum degree that needs, shown in Fig. 2 b, vacuum access tube (1) is closed, add control air pressure by adding control air pressure access tube (5) access, spring piston (2) is compressed, drives control pin (4) needle valve (7) is opened, liquid material enters main control room (6) from liquid material apotheca (9), under the effect of negative pressure, enter the cavity of workpiece to be filled by interior syringe needle (10), carry out can; Be full of the cavity of workpiece to be filled when liquid material after, shown in Fig. 2 c, use the nitrogen of vacuum access tube (1) access malleation, nitrogen arrives the workpiece tapping by outer syringe needle (12), under the pressure of nitrogen, liquid material in the interior syringe needle is pushed back liquid material apotheca (9), also liquid material is pressed to as far as possible the inside cavity of workpiece to be filled; Disconnection adds control air pressure and nitrogen, and spring piston resets and drives control pin (4) needle valve (7) is closed, and liquid material apotheca (9) disconnects with main control room and can workpiece, and can is finished.
Claims (6)
1. the controlled packaging process of vacuum filling is characterized in that the liquid material input system is comprised of liquid material storage chamber and needle valve, and the motion of needle valve by the control pin realizes pouring into the liquid material of main control room; Be that inside and outside syringe needle forms with the double-deck syringe needle that is connected by can device cavity by inside and outside two-layer passage, interior syringe needle is realized fluid-filling, outer syringe needle vacuumizes and introduces external pressure and reclaims liquid material, the outer attached sealing ring of syringe needle outside, sealing ring is isolated with inside and outside syringe needle and ambient atmosphere, interior syringe needle one end enters to be connected with main control room by the can workpiece perforate other end and carries out the can of liquid material, and inside and outside syringe needle is being communicated by can workpiece tapping;
Job step is as follows: at first the interior syringe needle (10) with double-deck syringe needle is connected with the cavity of workpiece to be filled, the hole of the main control room of syringe needle (10) access needle valve in guaranteeing, do not apply needle valve (7) maintenance closed condition when adding control air pressure, the interior syringe needle (10) of double-deck syringe needle is connected needle valve main control room (6), interior syringe needle (10) and workpiece to be filled chamber and forms a closed cavity with the cavity of workpiece to be filled; Vacuum access tube (1) links to each other with negative pressure of vacuum, vacuumizes by outer syringe needle (12); When reaching the vacuum degree that needs, vacuum access tube (1) is closed, open needle valve (7) by the control pin (4) that adds control air pressure control needle valve, liquid material enters main control room (6) from the pipeline that needle valve control pin unclamps from liquid material apotheca (9), and under the effect of negative pressure, enter the cavity of workpiece to be filled by interior syringe needle (10), carry out can; Be full of the cavity of workpiece to be filled when liquid material after, use the nitrogen of vacuum access tube (1) access malleation, nitrogen arrives can workpiece tapping by outer syringe needle (12), and under the pressure of nitrogen, the liquid material in the interior syringe needle is pushed back liquid material apotheca (9); Disconnection adds control air pressure, and needle valve (7) is closed, and liquid material apotheca (9) disconnects with main control room and can workpiece, and can is finished; Control pin (4) is as the switch pin of needle valve, and the control liquid material enters main control room; The effect of outer syringe needle (12) has two, and one is to vacuumize, and another is to introduce to add air pressure liquid material is reclaimed; Additional gas pressure-controlled chamber (3) is a cavity that has piston and fixing cylinder wall to consist of, and adds control air pressure UNICOM, adds control air pressure by applying, and with the spring piston compression, drives the control pin with liquid material apotheca and main control room connection; Vacuum access tube (1) one end is connected with outer syringe needle (12), and the other end is connected with negative pressure of vacuum when vacuumizing, and is connected with nitrogen when reclaiming liquid material.
2. the controlled packaging process of vacuum filling according to claim 1 is characterized in that described vacuum access tube (1) can again can be as the access port that adds nitrogen as the access port of negative pressure of vacuum, and has closing function.
3. the controlled packaging process of vacuum filling according to claim 1 and 2 is characterized in that using control pin (4) the control liquid material of different-diameter to enter main control room (6).
4. the device of the controlled can of vacuum filling, it is characterized in that comprising vacuum access tube (1), spring piston (2), additional gas pressure-controlled chamber (3), control pin (4), add control air pressure access tube (5), main control room (6), needle valve (7), by can liquid material interface (8), liquid material apotheca (9), controller housing (11), sealing ring (13); Vacuum links to each other with external pressure with vacuum with external pressure access tube one end, and the other end is connected with the outer syringe needle of double-deck syringe needle, workpiece cavity to be filled is vacuumized with follow-up adscititious gases liquid material in the syringe needle is reclaimed; The additional gas pressure control system is comprised of piston, additional gas pressure-controlled chamber, needle valve and the control pin with spring, the piston of additional gas pressure-controlled chamber connecting band spring, the unlatching of the control pin of gas piston linkage needle valve makes can liquid material input system be communicated with the main control room of needle valve or closes; Main control room one end links to each other with the internal layer of double-deck syringe needle, and the other end links to each other with can liquid material input system with the passage of the control pin of needle valve; Formed by the namely interior syringe needle (10) of inside and outside two-layer passage and outer syringe needle (12) with the double-deck syringe needle that is connected by can device cavity, interior syringe needle is realized fluid-filling, outer syringe needle vacuumizes and introduces external pressure and reclaims liquid material, the outer attached sealing ring of syringe needle outside, sealing ring is isolated with inside and outside syringe needle and ambient atmosphere, interior syringe needle one end enters to be connected with main control room by the can workpiece perforate other end and carries out the can of liquid material, and inside and outside syringe needle is being communicated by can workpiece tapping; Main control room is realized the control to can by coordinating additional gas pressure control system and liquid material input system; The motion of needle valve by the control pin realizes pouring into the liquid material of main control room.
5. the controlled filling apparatus of vacuum filling according to claim 4 is characterized in that the external diameter of interior syringe needle is than little by can device perforate internal diameter.
6. the controlled filling apparatus of vacuum filling according to claim 4 is characterized in that spring piston (2), additional gas pressure-controlled chamber (3), control pin (4), main control room (6), needle valve (7) and liquid material apotheca (9) are integrated in the controller housing (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103521825A CN102522223B (en) | 2011-11-09 | 2011-11-09 | Controllable filling method for vacuum filling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103521825A CN102522223B (en) | 2011-11-09 | 2011-11-09 | Controllable filling method for vacuum filling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102522223A CN102522223A (en) | 2012-06-27 |
| CN102522223B true CN102522223B (en) | 2013-10-30 |
Family
ID=46293108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103521825A Expired - Fee Related CN102522223B (en) | 2011-11-09 | 2011-11-09 | Controllable filling method for vacuum filling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102522223B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104229169B (en) * | 2013-06-07 | 2018-05-04 | 上海朝辉压力仪器有限公司 | Filling frock and its application method |
| CN109210382B (en) * | 2018-11-13 | 2023-09-01 | 乐山师范学院 | Nuclear magnetic tube quantitative air-filling device and use method thereof |
| CN110171588B (en) * | 2019-06-21 | 2021-08-20 | 中粮（成都）粮油工业有限公司 | Rice vacuum packaging machine with accurate metering |
| CN111916291B (en) * | 2020-08-10 | 2021-11-12 | 浙江台州特总电容器有限公司 | Nitrogen gas charging device for aluminum shell packaged power container |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19818761A1 (en) * | 1998-04-27 | 1999-10-28 | Khs Masch & Anlagenbau Ag | Single-chamber filling system |
| DE19818762A1 (en) * | 1998-04-27 | 1999-10-28 | Khs Masch & Anlagenbau Ag | Filling system and filling element |
| CN2818447Y (en) * | 2005-06-10 | 2006-09-20 | 宁波翔羚机械有限公司 | External long-piping mechanical liquid loading valve |
| CN201080431Y (en) * | 2007-06-27 | 2008-07-02 | 宁波克浪机械制造有限公司 | External integral type fluid machine loading valve |
| CN201923831U (en) * | 2010-09-03 | 2011-08-10 | 南京乐惠轻工装备制造有限公司 | Electronic type liquid filling device |
| CN102136375B (en) * | 2011-01-12 | 2012-04-11 | 南京大学 | Small-sized device for connecting plane micropore for single-pore vacuum encapsulation and pipeline |
-
2011
- 2011-11-09 CN CN2011103521825A patent/CN102522223B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102522223A (en) | 2012-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102522223B (en) | Controllable filling method for vacuum filling | |
| CN101882674B (en) | Lithium battery priming device and technology thereof | |
| CN110726068B (en) | Hydrogen storage bottle for hydrogen energy automobile | |
| CN202708101U (en) | Vacuum-pumping pull valve | |
| CN110683501B (en) | Vacuum-pumping type fuel oil filling method for oil tank containing elastic bag | |
| CN209133599U (en) | Priming device | |
| CN201699076U (en) | Lithium battery filling device | |
| CN107572123B (en) | A kind of sealed bottle stopper convenient for unlatching | |
| CN211821700U (en) | Novel hydrogen storage bottle for hydrogen energy automobile | |
| CN103234714A (en) | Tightness detection unit and method for large-capacity power lithium ion explosion-proof valve | |
| CN203644871U (en) | Battery manufacturing device and cavity-free vacuum liquid extracting device thereof | |
| CN104867704A (en) | Super capacitor vacuum dipping method and device | |
| CN205050917U (en) | Cylindrical lithium ion battery annotates liquid mechanism | |
| CN217158586U (en) | Battery liquid injection device | |
| CN208127301U (en) | A kind of priming device for lithium ion battery | |
| CN203382243U (en) | Double-hopper uninterruptible vacuum powder supply system | |
| CN206038243U (en) | Aerosol canister seals detection device | |
| CN211450327U (en) | Hydrogen storage device for negative pressure hydrogen injection | |
| CN107670078A (en) | Vacuum system and oxirane system and device | |
| CN213385896U (en) | Liquid material storage tank with vacuumizing device | |
| CN104089747B (en) | A kind of insertion section air tightness checking device | |
| CN204102727U (en) | A kind of containing soaking system and test | |
| CN207316462U (en) | A kind of enterprise's waste gas exhaust inventory control system | |
| CN201306599Y (en) | Vacuumizing tooling | |
| CN218819609U (en) | Negative pressure filling hydrogen storage bottle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20181109 |