CN106965146B - Sample fishing device under liquid nitrogen - Google Patents
Sample fishing device under liquid nitrogen Download PDFInfo
- Publication number
- CN106965146B CN106965146B CN201710201157.4A CN201710201157A CN106965146B CN 106965146 B CN106965146 B CN 106965146B CN 201710201157 A CN201710201157 A CN 201710201157A CN 106965146 B CN106965146 B CN 106965146B
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- CN
- China
- Prior art keywords
- grabbing
- sample
- liquid nitrogen
- cylinder body
- adjusting rod
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J1/00—Manipulators positioned in space by hand
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- Engineering & Computer Science (AREA)
- Robotics (AREA)
- Mechanical Engineering (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
Abstract
The device comprises a grabbing device and a sterilizing device, wherein the grabbing device comprises a long rod, a gripper and an adjusting rod, the long rod is used for stretching into liquid nitrogen, the gripper is used for grabbing a sample, the adjusting rod is used for adjusting the gripping force of the gripper, the lower end of the long rod is provided with a plurality of grippers, and the grippers are in an open state in a natural state; the upper end of the long rod is provided with a gripping part; the upper part of the adjusting rod is provided with a handle, the lower part of the adjusting rod is provided with a lantern ring used for encircling the outside of the tongs, and the gathering/loosening of the tongs is controlled by the descending/ascending of the lantern ring; the disinfection device comprises a base, an opaque cylinder body and an ultraviolet lamp used for disinfecting the grabbing device, wherein the bottom of the cylinder body is fixedly connected with the base, the upper part of the cylinder body is open, and the ultraviolet lamp is arranged inside the cylinder body. The beneficial effects of the invention are as follows: the laboratory staff can directly go deep into liquid nitrogen to salvage the sample falling from the bottom of the liquid nitrogen without dumping and transferring other samples in the liquid nitrogen tank.
Description
Technical Field
The invention relates to a sample salvaging device under liquid nitrogen.
Background
The surface of the sample is easy to freeze and skid in the process of entering or leaving liquid nitrogen at the temperature of minus 196 ℃ and falls to the bottom of the liquid nitrogen tank, and the frequency of occurrence of the situation is greatly increased along with the increase of the sample quantity. Because of the ultralow temperature characteristic of liquid nitrogen and the fact that a large amount of samples are stored in the tank body, the space is narrow, laboratory staff cannot directly stretch hands into the liquid nitrogen to pick up the samples, when the conditions are met, the samples in the tank can only be transferred firstly, then all the liquid nitrogen and the tank bottom samples in the tank are poured out, and then the samples and the liquid nitrogen are transferred back again. This operation is not only time-consuming and laborious, but also the considerable volatilization caused by the dumping of liquid nitrogen has an adverse effect on the health of the laboratory staff.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the sample salvaging device under liquid nitrogen, which is simple in structure, convenient to operate, clean and pollution-free, and can salvage the sample falling from the bottom of the tank directly under the liquid nitrogen without transferring other samples in the tank and pouring the liquid nitrogen.
The invention relates to a device for salvaging a sample under liquid nitrogen, which is characterized in that: the device comprises a grabbing device and a sterilizing device, wherein the grabbing device comprises a long rod which is used for extending into liquid nitrogen, a gripper which is used for grabbing a sample and an adjusting rod which is used for adjusting the grabbing force of the gripper, the lower end of the long rod is provided with a plurality of grippers, and the grippers are in an open state in a natural state; the upper end of the long rod is provided with a gripping part; the upper part of the adjusting rod is provided with a handle, the lower part of the adjusting rod is provided with a lantern ring used for encircling the outside of the tongs, and the gathering/loosening of the tongs is controlled by the descending/ascending of the lantern ring; the disinfection device comprises a base, an opaque cylinder body and an ultraviolet lamp used for disinfecting the grabbing device, wherein the bottom of the cylinder body is fixedly connected with the base, the upper part of the cylinder body is open, and the ultraviolet lamp is arranged inside the cylinder body.
The tongs are of a hand-shaped structure consisting of five arc-shaped clamping handles, the arc-shaped clamping handles are gathered and loosened along with the descending/ascending of the circular ring, and the grabbing end of each arc-shaped clamping handle is firmly sleeved with a rubber head with a smooth outer side and a rough inner side.
The upper portion of stock is equipped with the sign scale that shows whether snatchs the sample, and wherein the sign is two along the reticle that stock axial set up, and the reticle sign of top represents snatchs successfully, and the reticle sign of below represents not snatchs or snatchs failure.
The cylinder wall of the cylinder body is provided with a groove for placing the grabbing device.
The barrel is a hollow hexagonal prism, and a mirror for reflecting ultraviolet light is attached to the inner side wall of the barrel.
Grooves are arranged on the upper edges of the two symmetrical side walls of the cylinder body.
The application method of the invention is as follows: when the sample falls into the bottom of the liquid nitrogen tank, the ultraviolet lamp in the cylinder is firstly turned on to sterilize the grabbing device for 10-15 minutes. After that, a laboratory worker holds the handles on both sides of the liquid nitrogen tank to tilt the tank body by 10 ° -15 ° toward one side, so that the sample rolls down to the bottom of one side of the tank body. And the other laboratory personnel respectively hold the long rod holding part and the handle of the adjusting rod by two hands, stretch the grabbing device into the bottom of the liquid nitrogen tank from the liquid nitrogen tank mouth, close the two rods after bottoming, push the adjusting rod downwards along the long rod axis to drive the five arc clamping handles of the hand-shaped handle at the lower end of the long rod to gather. The liquid nitrogen volatilizes and fogs, so that whether the picking is successful or not cannot be directly observed, if the downward pushing distance of the adjusting rod is longer, the mark of the long rod 'unoccupied' scale is reached, the hand grip is indicated to be empty, and if the downward pushing distance of the adjusting rod does not reach the 'unoccupied' scale and encounters resistance, the adjusting rod is just located at the 'acquired' scale mark, and the hand grip is indicated to grasp a sample. At this time, the strength is controlled, the relative positions of the two rods are kept still, and the sample is clamped and carefully taken out from the liquid nitrogen tank.
The invention has the beneficial effects that:
1) The use of the sample salvaging device under liquid nitrogen omits the steps of transferring other samples in the tank, dumping liquid nitrogen and the like, so that time and labor are greatly saved, the safety risk of the other samples in the transferring process is effectively avoided, and meanwhile, the health injury to laboratory staff caused by volatilization of liquid nitrogen is also reduced;
2) The rubber head with the smooth outer side sleeved on the head part of the hand grip of the sample salvaging device under liquid nitrogen effectively avoids mechanical damage of the stainless steel claw to the inner layer of the liquid nitrogen tank (vacuum pumping is carried out between the inner layer and the outer layer of the liquid nitrogen tank, and if the inner layer is damaged, the vacuum is destroyed, so that the freezing effect is finally lost);
3) The mark scales are set on the long rod in the sample salvaging device under liquid nitrogen, so that whether the sample is obtained and salvaged successfully can be still known under the condition that the bottom of the tank is not clearly seen;
4) The arrangement of the reflecting mirrors on the surfaces in the hexagonal long cylinder in the liquid nitrogen lower sample salvaging device enhances the disinfection effect of the ultraviolet lamp and avoids the pollution of the salvaging device to liquid nitrogen;
5) The arrangement of the two grooves on the opposite sides of the top of the hexagonal long cylinder in the liquid nitrogen lower sample salvaging device enables the salvaging device to be placed and sterilized more stably and safely at ordinary times.
Drawings
Fig. 1 is a structural view of a grasping apparatus according to the invention.
Fig. 2 is a structural view of the sterilizing apparatus of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings
Referring to the drawings:
embodiment 1 the device for salvaging samples under liquid nitrogen comprises a grabbing device 1 and a sterilizing device 2, wherein the grabbing device 1 comprises a long rod 11 used for extending into liquid nitrogen, a gripper 12 used for grabbing samples and an adjusting rod 13 used for adjusting the grabbing force of the gripper, the lower end of the long rod 11 is provided with a multi-claw gripper 12, and the gripper 12 is in an open state in a natural state; the upper end of the long rod 11 is provided with a gripping part 111; the upper part of the adjusting rod 13 is provided with a handle 131, the lower part is provided with a lantern ring 132 used for encircling the outside of the grip, and the gathering/loosening of the grip 12 is controlled by the descending/ascending of the lantern ring 132; the disinfection device 2 comprises a base 21, an opaque cylinder 22 and an ultraviolet lamp 23 for disinfecting the grabbing device, wherein the bottom of the cylinder 22 is fixedly connected with the base 21, the upper part of the cylinder 22 is open, and the ultraviolet lamp 23 is arranged inside the cylinder 22.
The gripper 12 is a hand-shaped structure consisting of five arc-shaped clamping handles, the arc-shaped clamping handles are gathered and loosened along with the descending/ascending of the circular ring, and the grabbing end of each arc-shaped clamping handle is firmly sleeved with a rubber head 121 with a smooth outer side and a rough inner side.
The upper part of the long rod 11 is provided with an identification scale for displaying whether a sample is grabbed, wherein the identification is two scribing lines arranged along the axial direction of the long rod, the upper scribing mark 112 represents that the grabbing is successful, and the lower scribing mark 113 represents that the grabbing is not or the grabbing fails.
The wall of the cylinder 22 is provided with a groove 221 for placing the gripping device.
The cylinder 22 is a hollow hexagonal prism, and a mirror 222 for reflecting ultraviolet light is attached to the inner side wall of the cylinder 2.
Grooves 221 are formed in the upper edges of the symmetrical two side walls of the cylinder 22.
The application method of the invention is as follows: when the sample falls to the bottom of the liquid nitrogen tank, the ultraviolet lamp 23 in the cylinder 22 is turned on to sterilize the grabbing device 1 for 10-15 minutes. After that, a laboratory worker holds the handles on both sides of the liquid nitrogen tank to tilt the tank body by 10 ° -15 ° toward one side, so that the sample rolls down to the bottom of one side of the tank body. The other laboratory staff holds the long rod holding part 111 and the handle 131 of the adjusting rod respectively by two hands, stretches the grabbing device 1 from the liquid nitrogen tank mouth to the liquid nitrogen tank bottom, closes the two rods after bottoming, pushes the adjusting rod 13 downwards along the axial direction of the long rod 11 to drive the five arc clamping handles of the hand-shaped handle 12 at the lower end of the long rod 11 to gather. Because liquid nitrogen volatilizes and fogs, whether pickup is successful or not cannot be directly observed, if the downward pushing distance of the adjusting rod 13 is longer, the long rod 'unoccupied' scale mark 113 is reached, the hand grip is indicated to be empty, and if the downward pushing of the adjusting rod 13 does not reach the 'unoccupied' scale and encounters resistance, the adjusting rod 13 is just located at the 'acquired' scale mark 112, and the hand grip is indicated to grasp a sample. At this time, the strength is controlled, the relative positions of the two rods are kept still, and the sample is clamped and carefully taken out from the liquid nitrogen tank.
The embodiments described in the present specification are merely examples of implementation forms of the inventive concept, and the scope of protection of the present invention should not be construed as being limited to the specific forms set forth in the embodiments, but also equivalent technical means that can be conceived by those skilled in the art according to the inventive concept.
Claims (5)
1. The utility model provides a sample fishing device under liquid nitrogen which characterized in that: the device comprises a grabbing device and a sterilizing device, wherein the grabbing device comprises a long rod which is used for extending into liquid nitrogen, a gripper which is used for grabbing a sample and an adjusting rod which is used for adjusting the grabbing force of the gripper, the lower end of the long rod is provided with a plurality of grippers, and the grippers are in an open state in a natural state; the upper end of the long rod is provided with a gripping part; the upper part of the long rod is provided with an identification scale for displaying whether a sample is grabbed, wherein the identification is two scribing lines arranged along the axial direction of the long rod, the upper scribing line identification represents that grabbing is successful, and the lower scribing line identification represents that grabbing is not performed or that grabbing fails; if the pushing distance of the adjusting rod is longer, the mark of the long rod 'unoccupied' scale is reached, the hand grip is indicated to be empty, and if the pushing distance of the adjusting rod is not reached to the 'unoccupied' scale and resistance is met, the adjusting rod is just positioned at the 'acquired' scale mark, and the hand grip is indicated to grasp the sample; at the moment, the strength is controlled, the relative positions of the two rods are kept motionless, and a sample is clamped and carefully taken out from the liquid nitrogen tank; the upper part of the adjusting rod is provided with a handle, the lower part of the adjusting rod is provided with a lantern ring used for encircling the outside of the tongs, and the gathering/loosening of the tongs is controlled by the descending/ascending of the lantern ring; the disinfection device comprises a base, an opaque cylinder body and an ultraviolet lamp used for disinfecting the grabbing device, wherein the bottom of the cylinder body is fixedly connected with the base, the upper part of the cylinder body is open, and the ultraviolet lamp is arranged inside the cylinder body.
2. A submerged sample salvaging device as set forth in claim 1 wherein: the tongs are of a hand-shaped structure consisting of five arc-shaped clamping handles, the arc-shaped clamping handles are gathered and loosened along with the descending/ascending of the circular ring, and the grabbing end of each arc-shaped clamping handle is firmly sleeved with a rubber head with a smooth outer side and a rough inner side.
3. A submerged sample salvaging device as set forth in claim 1 wherein: the cylinder wall of the cylinder body is provided with a groove for placing the grabbing device.
4. A submerged sample salvaging device as set forth in claim 3 wherein: the barrel is a hollow hexagonal prism, and a mirror for reflecting ultraviolet light is attached to the inner side wall of the barrel.
5. A submerged sample salvaging device as set forth in claim 4 wherein: grooves are arranged on the upper edges of the two symmetrical side walls of the cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710201157.4A CN106965146B (en) | 2017-03-30 | 2017-03-30 | Sample fishing device under liquid nitrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710201157.4A CN106965146B (en) | 2017-03-30 | 2017-03-30 | Sample fishing device under liquid nitrogen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106965146A CN106965146A (en) | 2017-07-21 |
| CN106965146B true CN106965146B (en) | 2023-08-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710201157.4A Active CN106965146B (en) | 2017-03-30 | 2017-03-30 | Sample fishing device under liquid nitrogen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106965146B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3588165A (en) * | 1968-03-19 | 1971-06-28 | Oemv Ag | Fishing device for deep wells |
| GB1302098A (en) * | 1969-04-02 | 1973-01-04 | ||
| JPH09323270A (en) * | 1996-06-05 | 1997-12-16 | Mitsubishi Denki Bill Techno Service Kk | Circular fluorescent lamp mounting and demounting tool |
| CN2675348Y (en) * | 2003-12-18 | 2005-02-02 | 陈生荣 | Long rod fetching clamp |
| CN201484640U (en) * | 2009-08-22 | 2010-05-26 | 陈际军 | gripping apparatus |
| CN201612236U (en) * | 2009-12-23 | 2010-10-27 | 彭亮 | Crutch with picking function |
| CN205322055U (en) * | 2016-01-07 | 2016-06-22 | 邢皓宇 | Strawberry stalk remover |
| CN206811937U (en) * | 2017-03-30 | 2017-12-29 | 浙江大学 | Sample fishing device under a kind of liquid nitrogen |
-
2017
- 2017-03-30 CN CN201710201157.4A patent/CN106965146B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3588165A (en) * | 1968-03-19 | 1971-06-28 | Oemv Ag | Fishing device for deep wells |
| GB1302098A (en) * | 1969-04-02 | 1973-01-04 | ||
| JPH09323270A (en) * | 1996-06-05 | 1997-12-16 | Mitsubishi Denki Bill Techno Service Kk | Circular fluorescent lamp mounting and demounting tool |
| CN2675348Y (en) * | 2003-12-18 | 2005-02-02 | 陈生荣 | Long rod fetching clamp |
| CN201484640U (en) * | 2009-08-22 | 2010-05-26 | 陈际军 | gripping apparatus |
| CN201612236U (en) * | 2009-12-23 | 2010-10-27 | 彭亮 | Crutch with picking function |
| CN205322055U (en) * | 2016-01-07 | 2016-06-22 | 邢皓宇 | Strawberry stalk remover |
| CN206811937U (en) * | 2017-03-30 | 2017-12-29 | 浙江大学 | Sample fishing device under a kind of liquid nitrogen |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106965146A (en) | 2017-07-21 |
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