CN204962270U - Liquid nitrogen adds controlling means - Google Patents
Liquid nitrogen adds controlling means Download PDFInfo
- Publication number
- CN204962270U CN204962270U CN201520717367.5U CN201520717367U CN204962270U CN 204962270 U CN204962270 U CN 204962270U CN 201520717367 U CN201520717367 U CN 201520717367U CN 204962270 U CN204962270 U CN 204962270U
- Authority
- CN
- China
- Prior art keywords
- piston cylinder
- liquid nitrogen
- iron core
- cavity
- sealing plug
- 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
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- Electromagnetic Pumps, Or The Like (AREA)
Abstract
The utility model relates to a controlling means specifically is liquid nitrogen adds controlling means, including installing the piston cylinder in the steel bottle bottom, there is the liquid outlet steel bottle bottom, and the liquid outlet communicates with the cavity of piston cylinder, the cavity of piston cylinder in have center pin and solenoid, the sealing plug is connected to center pin one end, the other end is connected T shape and is moved the iron core, sealing plug, center pin and T shape are moved the iron core and do the horizontally reciprocating sliding in the cavitys of piston cylinder, and solenoid installs and moves iron core one side T shape, rely on magnetic force to attract drive T shape to move iron core horizontal migration, install the spring between sealing plug and the piston cylinder and are used for reseing, the drain pipe is connected to the cavity bottom of piston cylinder. The utility model provides a liquid nitrogen adds controlling means can accurate control liquid nitrogen outflow, prevent the people for topple over liquid in -process liquid nitrogen splash lead to the fact the test bench pollute with human frostbite, while closure device has reduced the liquid nitrogen and has volatilized, has improved the utilization ratio of liquid nitrogen.
Description
Technical field
The utility model relates to a kind of control gear, is specially liquid nitrogen and adds control gear.
Background technique
In molecular biology research, from plant tissue, extract DNA or RNA, often need, with liquid nitrogen snap frozen plant tissue, to prevent plant tissue to be oxidized or tissue degradation; Biological research laboratories generally adopts bubble chamber or incubation chamber hold as interim simple container and shift liquid nitrogen in plant tissue snap frozen, accurately cannot control the amount of liquid nitrogen, sharply boiling due to liquid nitrogen causes a large amount of liquid nitrogen and plant tissue place to splash, not only cannot guarantee that plant tissue quantitatively but also cause test stand to pollute and waste seriously meanwhile easily causes human injury, in addition foam chest can not long-time storage liquid nitrogen, unnecessary liquid nitrogen is often secondary refunds liquid nitrogen container, and in this process, be easy to the pollution causing whole tank liquid nitrogen.
Model utility content
For the problems referred to above, the technical problems to be solved in the utility model is to provide a kind of handling safety, the manageable liquid nitrogen of adding quantity adds control gear.
Liquid nitrogen adds control gear, and comprise the piston cylinder being arranged on bottom of steel cylinder, inner wall of steel cylinder has thermal insulation layer; Bottom of steel cylinder has liquid outlet, the cavity connects of liquid outlet and piston cylinder; Have central shaft and electromagnetic coil in the cavity of described piston cylinder, central shaft one end connects sealing plug, and the other end connects T-shaped and moves iron core; Sealing plug, central shaft and T-shaped are moved iron core level in the cavity of piston cylinder and are reciprocatingly slided, and electromagnetic coil is arranged on T-shaped and moves iron core side, rely on magnetic attraction to drive T-shaped to move iron core and move horizontally, and are provided with spring for resetting between sealing plug and piston cylinder; The cavity bottom of piston cylinder connects drain pipe; Central shaft has hollow passage to ensure along shaft axis, and central shaft two ends pressure is equal.
The liquid nitrogen that the utility model provides adds control gear, can accurately control liquid nitrogen outflow, prevents from causing test stand to pollute and human body frostbite people for toppling over liquid nitrogen splashing in liquid process, and obturator decreases liquid nitrogen volatilization simultaneously, improves the utilization ratio of liquid nitrogen.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Accompanying drawings concrete technological scheme of the present utility model.As shown in Figure 1, liquid nitrogen adds control gear, and comprise the piston cylinder 2 be arranged on bottom steel cylinder 9, steel cylinder 9 inwall has thermal insulation layer; Liquid outlet 1 is had, the cavity connects of liquid outlet 1 and piston cylinder 2 bottom steel cylinder 9; Have central shaft 3 and electromagnetic coil 7 in the cavity of described piston cylinder 2, central shaft 3 one end connects sealing plug 4, and the other end connects T-shaped and moves iron core 8; Sealing plug 4, central shaft 3 and T-shaped are moved iron core 8 level in the cavity of piston cylinder 2 and are reciprocatingly slided, electromagnetic coil 7 is arranged on T-shaped and moves iron core 8 side, relying on magnetic attraction to drive T-shaped to move iron core 8 to move horizontally, spring 5 being installed for resetting between sealing plug 4 and piston cylinder 2; The cavity bottom of piston cylinder 2 connects drain pipe 6; Central shaft 3 has hollow path 10 to ensure along shaft axis, and central shaft 3 two ends pressure is equal.
Open switch button, circuit ON in device, electromagnetic coil 7 in closed circuit produces electromagnetic attracting force T-shaped and moves iron core 8 and move, the mobile also Compress Spring 5 in the cavity of piston cylinder 2 with central shaft 3 and sealing plug 4, sealing plug 4 leaves liquid outlet 1, liquid outlet 1 is opened, and liquid nitrogen starts to flow in the cavity of piston cylinder 2 from liquid outlet 1, then discharges through drain pipe 6; Closing switch button, circuit disconnects, electromagnetic coil 7 dead electricity, and the elastic force of spring 5 promotes sealing plug 4, and push up back central shaft 3, liquid outlet 1 got back to by sealing plug 4, closed by liquid outlet 1, stops adding nitrogen.
Claims (1)
1. liquid nitrogen adds control gear, it is characterized in that: comprise the piston cylinder (2) being arranged on steel cylinder (9) bottom, steel cylinder (9) inwall has thermal insulation layer; Liquid outlet (1) is arranged at steel cylinder (9) bottom, the cavity connects of liquid outlet (1) and piston cylinder (2); Have central shaft (3) and electromagnetic coil (7) in the cavity of described piston cylinder (2), central shaft (3) one end connects sealing plug (4), and the other end connects T-shaped and moves iron core (8); Sealing plug (4), central shaft (3) and T-shaped are moved iron core (8) level in the cavity of piston cylinder (2) and are reciprocatingly slided, electromagnetic coil (7) is arranged on T-shaped and moves iron core (8) side, relying on magnetic attraction to drive T-shaped to move iron core (8) to move horizontally, spring (5) being installed for resetting between sealing plug (4) and piston cylinder (2); The cavity bottom of piston cylinder (2) connects drain pipe (6); Central shaft (3) has hollow passage (10) to ensure along shaft axis, and central shaft (3) two ends pressure is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520717367.5U CN204962270U (en) | 2015-09-16 | 2015-09-16 | Liquid nitrogen adds controlling means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520717367.5U CN204962270U (en) | 2015-09-16 | 2015-09-16 | Liquid nitrogen adds controlling means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204962270U true CN204962270U (en) | 2016-01-13 |
Family
ID=55057338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520717367.5U Expired - Fee Related CN204962270U (en) | 2015-09-16 | 2015-09-16 | Liquid nitrogen adds controlling means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204962270U (en) |
-
2015
- 2015-09-16 CN CN201520717367.5U patent/CN204962270U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20160113 Termination date: 20160916 |