CN105799962A - Packaging device for gas or vacuum packaging of sample containing test tubes - Google Patents

Packaging device for gas or vacuum packaging of sample containing test tubes Download PDF

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Publication number
CN105799962A
CN105799962A CN201610141127.4A CN201610141127A CN105799962A CN 105799962 A CN105799962 A CN 105799962A CN 201610141127 A CN201610141127 A CN 201610141127A CN 105799962 A CN105799962 A CN 105799962A
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CN
China
Prior art keywords
test tube
sample test
containing cavity
sealed
snap close
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.)
Granted
Application number
CN201610141127.4A
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Chinese (zh)
Other versions
CN105799962B (en
Inventor
胡海韬
张绍英
袁宝
白波
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Institute of High Energy Physics of CAS
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Institute of High Energy Physics of CAS
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Priority to CN201610141127.4A priority Critical patent/CN105799962B/en
Publication of CN105799962A publication Critical patent/CN105799962A/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B7/00Closing containers or receptacles after filling
    • B65B7/16Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/28Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by applying separate preformed closures, e.g. lids, covers
    • B65B7/2835Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by applying separate preformed closures, e.g. lids, covers applying and rotating preformed threaded caps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B31/00Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/02Filling, 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The invention discloses a packaging device for gas or vacuum packaging of sample containing test tubes. The packaging device comprises a pressure bearing base, locking parts and end seal covers. During packaging, the sample containing test tubes are arranged at installation positions of the pressure bearing base, the end seal covers can cover the sample containing test tubes through the locking parts in a sealed manner so that a sealed space can be formed between each end seal cover and a containing cavity, the sample containing test tubes are contained in the sealed spaces, an opening of each tube body is kept opened, and the interior of each tube body communicates with the containing cavity. An external opening is then used for conducting the operation such as air extracting and/or air inflating on the containing cavity, and therefore the interior of the containing cavity can reach the designated air pressure state or the designated vacuum state. Finally, the rotary end seal covers drive tube caps of the test tubes to rotate and conduct sealing relative to the tube bodies, and therefore packaging is achieved.

Description

For filling the sealed in unit of sample test tube gas or Vacuum Package
Technical field
The application relates to a kind of dress sample test tube sealed in unit, especially a kind of equipment for filling the encapsulation of sample test tube gas level pressure or Vacuum Package.
Background technology
Neutron scattering experiment and X ray scattering experiment involved in physics, chemistry, chemical industry, biology, the research field such as ore deposit and material science.In neutron and X ray scattering experiment process, it is by neutron and X-ray emission to specimen material, by its scattering phenomenon of analysis and observation, thus the architectural feature of specimen material can be drawn.
Test sample in experiment can be the forms such as liquid, powder and solid, and most of samples adopt test tube to hold and it needs to be packaged protection by noble gas or vacuum.Currently used mode is generally to be placed in the glove box of the bigger mobility atmosphere of volume dress sample test tube and is operated, test tube is taken out after having encapsulated, but so need to consume substantial amounts of inertia or dry gas, and inefficiency, can only to filling atmosphere gas in test tube, being unable to reach the effect of the encapsulation of gas level pressure or Vacuum Package, this also significantly limit the experiment condition of sample.
Summary of the invention
The application provides a kind of novel sealed in unit for filling sample test tube gas or Vacuum Package.
The sealed in unit that the application provides, including:
Bearing base, described bearing base have containing cavity, at least one for positioning installation position and the external tapping for being in communication with the outside by containing cavity of dress sample test tube, when described dress sample test tube is placed into installation position, the opening of described dress sample test tube communicates with containing cavity;
Locking member, described locking member has solution lock-bit and locking position, and described locking member can move between solution lock-bit and locking position;
And end capping, described locking member is located at installation position for end covers rotatably seal closure, and the capping of described end encloses, with the containing cavity of bearing base, the sealing space forming accommodating dress sample test tube;The capping of described end has the auxiliary section that the pipe cap with dress sample test tube mates, when described dress sample test tube is installed on installation position and described locking member is in locking position, described auxiliary section and pipe cap cooperate, and the capping of described end can drive pipe cap to rotate relative to the body filling sample test tube.
Further improvement as described sealed in unit, described installation position is the installing hole being opened in the cavity wall of containing cavity, and described installing hole has the limiting section that the location division with body is mated, when described dress sample test tube inserts in installing hole, described limiting section coordinates with location division, it is prevented that body rotates.
As the further improvement of described sealed in unit, the sidewall of described installing hole has the passage communicated with containing cavity, and after described dress sample test tube inserts installing hole, containing cavity is connected by described passage with the space corresponding to the opening of body.
As the further improvement of described sealed in unit, also including dress sample test tube, described dress sample test tube includes body and pipe cap, and described body is threadeded with pipe cap, and described body is provided with location division.
As the further improvement of described sealed in unit, also including mounting and tabletting, described pipe cap is provided with groove, described tabletting is arranged in groove, described mounting is arranged between body and tabletting, and when described pipe cap screws with body, described flap seal lives the opening of body.
As the further improvement of described sealed in unit, described auxiliary section is non-circular mating groove.
As the further improvement of described sealed in unit, it is provided with sealing member between the capping of described end and bearing base and seals.
As the further improvement of described sealed in unit, described locking member includes snap close, and when described snap close moves to locking position, described snap close props up end capping;When described snap close is positioned at solution lock-bit, described snap close departs from end capping;Wherein, propping up projection or the groove of holding the side of capping to have spheric at snap close, described end capping correspondence also has groove or the projection of spheric, and groove and the projection of spheric cooperate, it is ensured that end covers still rotatable in the locked condition.
As the further improvement of described sealed in unit, described locking member also includes pressure lock, lock core and lock core connecting rod, and described locking member can be fixed on axis of rotation on bearing base around one, and described pressure lock and lock core are hinged with lock core connecting rod two ends respectively;When described snap close is in locking position, described pressure lock is turned on snap close, and drives lock core card on bearing base;When described snap close is in solution lock-bit, the lock upset of described pressure departs from snap close, and band movable lock core departs from bearing base.
Further improvement as described sealed in unit, also include three-way valve, piezometer and relief valve, described piezometer and relief valve all communicate with containing cavity, the first via pipeline of described three-way valve connects with the external tapping of containing cavity, second road pipeline connects with gas circuit supply line, and three-way connection (pipe) road connects with vacuum lead.
The application provides the benefit that:
The sealed in unit that the application provides, it includes bearing base, locking member and end capping, when being packaged, dress sample test tube is placed on the installation position of bearing base, and end lidstock is located at the top of dress sample test tube by available locking member, making end capping and containing cavity form one and seal space, dress sample test tube is placed in this sealing space, and keep the opening of body to open, make to connect with containing cavity in body.Containing cavity is bled and/or the operation such as inflation by recycling external tapping, makes the air pressure or the vacuum state that reach to specify in containing cavity.The capping of last round end drives the pipe cap of test tube and body to rotate against sealing, thus realizing encapsulation.
Accompanying drawing explanation
Fig. 1 is that the application is for filling the structural representation of a kind of embodiment of sealed in unit of sample test tube gas or Vacuum Package;
Fig. 2 is the exploded view of illustrated embodiment shown in Fig. 1;
Fig. 3 is the perspective view sectional view of embodiment illustrated in fig. 1;
Fig. 4 is bearing base schematic diagram in embodiment illustrated in fig. 1;
Fig. 5 is installation position schematic enlarged-scale view in Fig. 4;
Fig. 6 is that in embodiment illustrated in fig. 1, locking member is in schematic diagram during solution lock-bit;
Fig. 7 is that in embodiment illustrated in fig. 1, locking member is in schematic diagram during locking position.
Detailed description of the invention
The present invention is described in further detail in conjunction with accompanying drawing below by detailed description of the invention.The application can realize with multiple different form, however it is not limited to the embodiment described by the present embodiment.The purpose providing detailed description below is easy for present disclosure is become apparent from thorough explanation, and wherein the words of the indicating position such as upper and lower, left and right is only for shown structure position in respective figure.
But, those skilled in the art may be aware that one or more detail describes and can be omitted, or can also adopt other method, assembly or material.In some instances, some embodiments do not describe or are not described later in detail.
Additionally, technical characteristic described herein, technical scheme can also be combined in any suitable manner in one or more embodiments.For a person skilled in the art, it is easy to step or the operation order of understanding the method relevant with embodiment provided herein can also change.Therefore, any order in drawings and Examples is merely illustrative purposes, does not imply that requirement in a certain order, requires unless expressly stated according to a certain order.
Herein for parts institute serialization number itself, for instance " first ", " second " etc., only for distinguishing described object, not there is any order or art-recognized meanings.And the application described " connection ", " connection ", if no special instructions, all include directly or indirectly connection (connection).
Embodiment one:
The present embodiment one provides a kind of sealed in unit for filling sample test tube gas or Vacuum Package, and this sealed in unit is for carrying out gas level pressure encapsulation or Vacuum Package to dress sample test tube.
Refer to Fig. 1-3, this sealed in unit includes bearing base 100, locking member 200 and end capping 300.
This bearing base 100 have containing cavity 110, at least one for positioning installation position 120 and the external tapping 130 for being in communication with the outside by containing cavity 110 of dress sample test tube, when filling sample test tube and being placed into installation position 120, the opening of dress sample test tube communicates with containing cavity 110.
Locking member 200 has solution lock-bit and locking position, and locking member 200 can move between solution lock-bit and locking position.Locking member 200 is for being located at installation position 120 by end capping 300 rotatably seal closure, and the containing cavity 110 of end capping 300 and bearing base 100 encloses and forms the sealing space housing dress sample test tube.End capping 300 has the auxiliary section that the pipe cap with dress sample test tube mates, when dress sample test tube is installed on installation position 120 and locking member 200 is in locking position, auxiliary section and pipe cap cooperate, and end capping 300 can drive the body 420 that pipe cap 410 fills sample test tube relatively to screw.
Dress sample test tube is placed in this sealing space, and keeps the opening of body 420 to open, make to connect with containing cavity 110 in body 420.Containing cavity 110 is bled and/or the operation such as inflation by recycling external tapping 130, makes the air pressure or the vacuum state that reach in containing cavity 110 to specify.Finally select pipe cap 410 and body 420 screwing hermetic of end capping 300 drive test tube, thus realizing encapsulation.
This packaging system is relative to existing technologies, it is possible to achieve the gas encapsulation of specified pressure or Vacuum Package in test tube, it is possible to reduce a large amount of consumption of gas, scavenging efficiency is high, and device volume can accomplish only small, it is simple to carrying.
Further, dress sample test tube can be not belonging to the part of this sealed in unit, it is possible to is summarized as an ingredient of this sealed in unit.
Refer to Fig. 2 and 3, the dress sample test tube that the present embodiment provides includes body 420 and pipe cap 410, and body 420 is threadeded with pipe cap 410, and body 420 is provided with location division 421.
Refer to Fig. 5, a kind of installation position 120 that the present embodiment provides is the installing hole being opened in the cavity wall of containing cavity 110, this installing hole has the limiting section 121 that the location division 421 with body 420 is mated, when filling sample test tube and inserting in installing hole, limiting section 121 coordinates with location division 421, prevent body 420 from rotating when pipe cap 410 rotates, in order to the sealing that pipe cap 410 and body 420 is spirally connected is fixing.
Wherein, limiting section 121 and location division 421 can be made is all kinds of non-circular shapes, for instance hexagon, triangle, ellipse etc., namely after dress sample test tube inserts installing hole, it is impossible to is mounted opposite hole and rotates.
Refer to Fig. 2 and 3, on the contrary, then it is required to realize unitary rotation between auxiliary section and the pipe cap 410 of end capping 300, therefore between auxiliary section and pipe cap 410, the male-female engagement being also designed to by non-circular structure realizes unitary rotation, such as in the present embodiment, auxiliary section is non-circular mating groove 310, and pipe cap 410 then has the profile coordinated with this mating groove 310.
Certainly, in other embodiments, it is possible on pipe cap 410, design a fluting, and coordinate with this fluting with a bulge-structure in end capping 300.
Additionally, also can realize the unitary rotation of end capping 300 and pipe cap 410 from other angles, for instance the adjustable fixed structure foundation one such as clamping, gripping or magnetic absorption can be passed through between auxiliary section with pipe cap and be connected, thus realizing unitary rotation.After rotation process completes, then open connection between the two, in order to take out dress sample test tube.
Please continue to refer to Fig. 5, in the present embodiment, installation position 120 is an installing hole, is additionally provided with boss 122 in this installing hole, for placing the location division 421 of dress sample test tube, it is ensured that dress sample test tube will not fall down in installing hole.
The sidewall of this installing hole also has the passage 123 communicated with containing cavity 110, after dress sample test tube inserts installing hole, containing cavity 110 is connected by passage 123 with the space corresponding to the opening of body 420, namely ensures to communicate with containing cavity 110 in body 420, forms a body space.
Please continue to refer to Fig. 2 and 3, this dress sample test tube also includes tabletting 440 and mounting 450, pipe cap 410 is provided with groove (not shown), tabletting 440 is arranged in groove, mounting 450 is arranged between body 420 and tabletting 440, when pipe cap 410 screws with body 420, mounting 450 seals up the opening of body 420, it is ensured that the dress invisible spectro sealing effectiveness of sample.
Similarly, in order to ensure the sealing effectiveness between end capping 300 and bearing base 100, it is also possible to be provided with sealing member between end capping 300 and bearing base 100 and seal.As shown in figures 2 and 5, it is arranged below a circle O type groove 124 in the outer corresponding end capping 300 of installing hole, an O RunddichtringO 800 has been arranged in this O type groove 124, utilizes O RunddichtringO 800 to seal when end capping 300 glands are on bearing base 100.
Further, the effect of locking member 200 is to be located on installation position 120 by end capping 300 rotatably seal closure, and can open end capping 300 after operation completes.The fixed form of locking member 200 can be passed through can move between solution lock-bit and locking position, and can realize in the structure of locking position place locking end capping 300.
Such as, locking member 200 can include snap close 210, and when snap close 210 moves to locking position, snap close 210 props up end capping 300;When snap close 210 is positioned at solution lock-bit, snap close 210 departs from end capping 300.
Wherein, so that end capping 300 in the locked condition still can be good rotation, refer to Fig. 3,6,7, the groove 211 holding the side of capping 300 to have spheric is propped up at snap close 210, end capping 300 correspondences also have the projection 320 of spheric, the groove 211 of spheric and protruding 320 cooperates, it is ensured that end capping 300 is still rotatable in the locked condition.
Certainly, it is possible to prop up the projection holding the side of capping 300 to have spheric at snap close 210, and hold capping 300 correspondences also to have the groove of spheric.
Movement and the locking of snap close 210 realize also by each class formation, refer to Fig. 6 and 7, locking member 200 shown in the present embodiment also includes pressure lock 220, lock core 230 and lock core connecting rod 240, locking member 200 can rotate around a rotating shaft 250 being fixed on bearing base 100, and pressure lock 220 and lock core 230 are hinged with lock core connecting rod 240 two ends respectively.
Refer to Fig. 7, when snap close 210 is in locking position, pressure lock 220 is turned on snap close 210, and band movable lock core 230 is stuck on bearing base 100.The end 231 of lock core 230 is designed as buckle structure, may be stuck on bearing base 100, and locking member 200 cannot be freely rotatable this moment, to reach locking and to push down the effect of end capping 300.
Refer to Fig. 6, when snap close 210 is in solution lock-bit, pressure lock 220 upset departs from snap close 210, and band movable lock core 230 departs from bearing base 100, now desirable lower end capping 300, thus picking and placeing dress sample test tube.
In addition, refer to Fig. 1, the sealed in unit of the present embodiment also includes three-way valve 500, relief valve 600 and piezometer 700 (such as pressure vacuum ga(u)ge), relief valve 600 and piezometer 700 all communicate with containing cavity 110, the first via pipeline of three-way valve 500 connects with the external tapping 130 of containing cavity 110, second road pipeline connects with gas circuit supply line, and three-way connection (pipe) road connects with vacuum lead.
The present embodiment is taken a breath, the process of inflation and evacuation is as follows, refer to Fig. 1, rotate three-way valve 500 and point to vacuum direction, left side, because the pipe cap 410 of test tube assembly does not screw, therefore it is interconnected by passage 123 between cavity and test tube, cavity and test tube are carried out evacuation, when pressure vacuum ga(u)ge 700 registration reaches setting value (such as 10Pa), inside cavity and the dress invisible spectro vacuum of sample have all reached this value, then rotate three-way valve 500 and point to right direction, it is inflated, when pressure vacuum ga(u)ge 700 registration reaches setting value (such as 24KPa), rotate directly over three-way valve 500 sensing locked, now cavity and test tube interior have all been filled with the gas specified.
If in order to improve gas purity, it is possible to repeat the operating process of above-mentioned evacuation and inflation, to improve gas purity.
If need to change another kind of gas, change the gaseous species in gas circuit supply line and repeat aforesaid operations.
If needing to obtain vacuum test tube, then three-way valve 500 always points to left side, carries out bleeding.
In the present embodiment, gas or vacuum encapsulation process are as follows, after completing above-mentioned ventilation, inflation and vacuum, turning end capping 300, thus driving the pipe cap 410 rotation along hand of spiral of test tube, because body 420 is fixed in installing hole, along with the action of tightening between pipe cap 410 and body 420, tabletting 440 and mounting 450 also press body 420 therewith, until fastening, install to complete to seal.
Above content is in conjunction with specific embodiment further description made for the present invention, it is impossible to assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, it is also possible to make some simple deduction or replace.

Claims (10)

1. the sealed in unit being used for filling sample test tube gas or Vacuum Package, it is characterised in that including:
Bearing base, described bearing base have containing cavity, at least one for positioning installation position and the external tapping for being in communication with the outside by containing cavity of dress sample test tube, when described dress sample test tube is placed into installation position, the opening of described dress sample test tube communicates with containing cavity;
Locking member, described locking member has solution lock-bit and locking position, and described locking member can move between solution lock-bit and locking position;
And end capping, described locking member is located at installation position for end covers rotatably seal closure, and the capping of described end encloses, with the containing cavity of bearing base, the sealing space forming accommodating dress sample test tube;The capping of described end has the auxiliary section that the pipe cap with dress sample test tube mates, when described dress sample test tube is installed on installation position and described locking member is in locking position, described auxiliary section and pipe cap cooperate, and the capping of described end can drive pipe cap to rotate relative to the body filling sample test tube.
2. sealed in unit as claimed in claim 1, it is characterized in that, described installation position is the installing hole being opened in the cavity wall of containing cavity, described installing hole has the limiting section that the location division with body is mated, when described dress sample test tube inserts in installing hole, described limiting section coordinates with location division, it is prevented that body rotates.
3. sealed in unit as claimed in claim 2, it is characterised in that the sidewall of described installing hole has the passage communicated with containing cavity, and after described dress sample test tube inserts installing hole, containing cavity is connected by described passage with the space corresponding to the opening of body.
4. sealed in unit as claimed in claim 2, it is characterised in that also including dress sample test tube, described dress sample test tube includes body and pipe cap, and described body is threadeded with pipe cap, and described body is provided with location division.
5. sealed in unit as claimed in claim 4, it is characterised in that also include mounting and tabletting, described pipe cap is provided with groove, and described tabletting is arranged in groove, and described mounting is arranged between body and tabletting, when described pipe cap screws with body, described flap seal lives the opening of body.
6. sealed in unit as claimed in claim 1, it is characterised in that described auxiliary section is non-circular mating groove.
7. sealed in unit as claimed in claim 1, it is characterised in that be provided with sealing member between the capping of described end and bearing base and seal.
8. the sealed in unit as according to any one of claim 1 to 7, it is characterised in that described locking member includes snap close, when described snap close moves to locking position, described snap close props up end capping;When described snap close is positioned at solution lock-bit, described snap close departs from end capping;Wherein, propping up projection or the groove of holding the side of capping to have spheric at snap close, described end capping correspondence also has groove or the projection of spheric, and groove and the projection of spheric cooperate, it is ensured that end covers still rotatable in the locked condition.
9. sealed in unit as claimed in claim 8, it is characterised in that described locking member also includes pressure lock, lock core and lock core connecting rod, described locking member can be fixed on axis of rotation on bearing base around one, and described pressure lock and lock core are hinged with lock core connecting rod two ends respectively;When described snap close is in locking position, described pressure lock is turned on snap close, and drives lock core card on bearing base;When described snap close is in solution lock-bit, the lock upset of described pressure departs from snap close, and band movable lock core departs from bearing base.
10. the sealed in unit as according to any one of claim 1 to 7, it is characterized in that, also include three-way valve, piezometer and relief valve, described piezometer and relief valve all communicate with containing cavity, the first via pipeline of described three-way valve connects with the external tapping of containing cavity, second road pipeline connects with gas circuit supply line, and three-way connection (pipe) road connects with vacuum lead.
CN201610141127.4A 2016-03-11 2016-03-11 For filling the sealed in unit of sample test tube gas or Vacuum Package Active CN105799962B (en)

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Application Number Priority Date Filing Date Title
CN201610141127.4A CN105799962B (en) 2016-03-11 2016-03-11 For filling the sealed in unit of sample test tube gas or Vacuum Package

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CN105799962B CN105799962B (en) 2018-02-23

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09286491A (en) * 1996-04-18 1997-11-04 Sekisui Chem Co Ltd Jig and apparatus for producing blood-collecting vacuum tube
JP2004168409A (en) * 2002-11-15 2004-06-17 Ikeda Kikai Kogyo Kk Vacuum type cap tight-winding tool
CN101216025A (en) * 2008-01-10 2008-07-09 河南农业大学 Simple vacuum pumping device, vacuum sampling bottle and vacuum pumping method
CN102009753A (en) * 2010-07-30 2011-04-13 楚天科技股份有限公司 Vacuum-pumping and nitrogen-filling plug-adding apparatus
CN204359715U (en) * 2014-12-16 2015-05-27 韩晓朋 The hermetically-sealed construction of x-ray fluorescence spectrometry instrument sample cup and vacuum chamber
US20150266600A1 (en) * 2014-03-23 2015-09-24 Vp Sheets Ltd Device and Method for Atmosphere Modification in a Container During the Sealing Process
CN204956980U (en) * 2015-08-31 2016-01-13 重庆开奇科技发展有限公司 Be suitable for automatic vacuum of single heparin tube flowing water closing cap device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09286491A (en) * 1996-04-18 1997-11-04 Sekisui Chem Co Ltd Jig and apparatus for producing blood-collecting vacuum tube
JP2004168409A (en) * 2002-11-15 2004-06-17 Ikeda Kikai Kogyo Kk Vacuum type cap tight-winding tool
CN101216025A (en) * 2008-01-10 2008-07-09 河南农业大学 Simple vacuum pumping device, vacuum sampling bottle and vacuum pumping method
CN102009753A (en) * 2010-07-30 2011-04-13 楚天科技股份有限公司 Vacuum-pumping and nitrogen-filling plug-adding apparatus
US20150266600A1 (en) * 2014-03-23 2015-09-24 Vp Sheets Ltd Device and Method for Atmosphere Modification in a Container During the Sealing Process
CN204359715U (en) * 2014-12-16 2015-05-27 韩晓朋 The hermetically-sealed construction of x-ray fluorescence spectrometry instrument sample cup and vacuum chamber
CN204956980U (en) * 2015-08-31 2016-01-13 重庆开奇科技发展有限公司 Be suitable for automatic vacuum of single heparin tube flowing water closing cap device

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