CN205718216U

CN205718216U - A kind of nitrogen reduced vacuum glass desicator

Info

Publication number: CN205718216U
Application number: CN201620573462.7U
Authority: CN
Inventors: 张嘉玉
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-06-15
Filing date: 2016-06-15
Publication date: 2016-11-23
Anticipated expiration: 2026-06-15

Abstract

This utility model relates to a kind of nitrogen reduced vacuum glass desicator.It is dried cylinder, glass ledge, porcelain plate and Pressure gauge including glass, Pressure gauge is placed in glass ledge top, porcelain plate is placed in width that glass is dried in cylinder along upper, it is uniformly distributed multiple hole not of uniform size on porcelain plate, also includes the gas access being positioned in glass ledge, the latex tubing being connected with gas access and the hose clip being clipped on latex tubing.The beneficial effects of the utility model are: nitrogen is passed through the gas access being positioned in glass ledge by latex tubing, realize being passed through the function of nitrogen in cylinder, thus pressure in increasing exsiccator, substantially reducing experimenter is to open the most time-consuming degree of difficulty of exsiccator passage glass ledge and potential safety hazard.This design improves to also reduce and drying sample to be measured is exposed in existing operating technology the surrounding medium impact produced in air, makes experimental implementation easier, and experimental result is more accurate.

Description

A kind of nitrogen reduced vacuum glass desicator

Technical field

This utility model relates to a kind of use for laboratory glass desicator, is dried particularly to a kind of nitrogen reduced vacuum glass Device.

Background technology

Vacuum glass exsiccator is widely used in the laboratory of all trades and professions, its objective is needing dry testing sample Carry out physical dryness and cooling stores.The exsiccator of prior art needs to operate under vacuo, it is possible to decrease the hygroscopic water steam in space Dividing potential drop and accelerate dry run, and hygroscopic water boiling point and dry materials temperature can be reduced, steam is difficult to leak.So, vacuum drying Device is applicable to be dried the occasion that thermal sensitivity, oxidizable, explosive and poisonous material and hygroscopic water steam need to reclaim.But use But inconvenient, this drier body is had generally to be made up of glass ledge and glass jar, the upper and lower wide face of two-part contact For frosting, need during Guan Bi to rely on self gravitation and the vaseline spread upon on upper and lower contact surface to realize sealing.Therefore, closing Need a hands to fix glass jar when closing and open lid, another hands exert oneself to push away glass ledge in the horizontal direction move dynamic Just can open.Due to its vacuumizing characteristic and atmospheric pressure effect, glass ledge after causing drying process to terminate, cannot be opened.Example As, when closing exsiccator, inside and outside exsiccator, atmospheric pressure is equal, and normal movable glass ledge can be closed；When opening, evacuation Completing with drying process, vacuum desiccator internal pressure is zero, and ambient pressure is an atmospheric pressure, and a hands has been difficult to push away Mobile making, if firmly pulled up, being not only difficult to open, too quickly also can take up whole for glass jar often due to the most excessive, Causing the testing sample on porcelain plate frame to tilt to spill, also can cause the damage of instrument just in case accidentally dropping to come off.It addition, repeatedly open pass Close exsiccator and also the testing sample in exsiccator can be produced the environment introducing the media such as such as oxygen, steam, carbon dioxide Interference, affects drying effect and experimental result.

Summary of the invention

The deficiency existed in view of prior art, this utility model provides a kind of nitrogen reduced vacuum glass desicator, passes through Glass ledge is installed a Pressure gauge and a gas access, and at gas access, accesses a breast with hose clip Sebific duct, can be passed through nitrogen during pressure in needs increase exsiccator in exsiccator.

This utility model for achieving the above object, be the technical scheme is that a kind of nitrogen reduced vacuum glass desicator, Being dried cylinder, glass ledge, porcelain plate and Pressure gauge including glass, Pressure gauge is placed in glass ledge top, and porcelain plate is placed in glass and is dried Width in cylinder, along upper, porcelain plate has been uniformly distributed multiple hole not of uniform size, it is characterised in that: also include being positioned at glass ledge On gas access, the latex tubing being connected with gas access and the hose clip being clipped on latex tubing.

The beneficial effects of the utility model are: nitrogen is a kind of noble gas, be difficult to react with major part material or Produce impact, therefore can be used to the medium as equalizing reservoir pressure.A gas is set enters by covering in broadside frosted Mouthful, by glass desicator inner space be connected externally to connect, in gas drying process observe pressure gauge reading, when glass is dried When in device, pressure is too small, due to the effect of exsiccator external atmosphere pressure, experimenter is difficult to open exsiccator.At this moment by nitrogen It is passed through the gas access being positioned in glass ledge by latex tubing, realizes being passed through the function of nitrogen in cylinder, thus increase and be dried Pressure in device.This design, substantially reducing experimenter is to open the difficult journey that exsiccator passage glass ledge is the most time-consuming Degree and potential safety hazard.Simultaneously because the proportion of the filling of nitrogen and nitrogen is close to air and oxygen, this design improves and also reduces Drying sample to be measured is exposed to the surrounding medium impact produced in air by existing operating technology, makes experimental implementation more Simplicity, experimental result is more accurate.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model；

Fig. 2 is partial enlarged drawing of the present utility model.

Detailed description of the invention

As shown in Figure 1, 2, a kind of nitrogen reduced vacuum glass desicator, it is dried cylinder 1, glass ledge 2, porcelain plate 3 including glass With Pressure gauge 4, also include gas access 2-1, the latex tubing 5 being arranged in glass ledge 2.

Pressure gauge 4 is placed in glass ledge 2 top, and porcelain plate 3 is placed in glass and is dried the width in cylinder 1 along 1-1, on porcelain plate 3 all Even distributed multiple hole 3-1 not of uniform size, latex tubing 5 is fixed on the 2-1 of gas access, accompanies flexible pipe on latex tubing 5 Folder 6.

First desiccant is placed in during use glass and is dried bottom cylinder 1, after porcelain plate 3 is placed in wide along 1-1, by dry object It is placed on porcelain plate 3.Then it is dried at glass after smearing vaseline on the contact surface of cylinder 1 and glass ledge 2 and to buttress glass on the other hand and do Dry cylinder 1, is slowly dried cylinder 1 direction horizontal sliding to glass by glass ledge 2 along lid level direction on the other hand, until of completely closed.

The gas access 2-1 of glass ledge 2 is socketed a latex tubing 5, latex tubing 5 has had a hose clip 6, breast The other end of sebific duct 5 connects a nitrogen cylinder.

In evacuation and testing sample are dried, the air pressure that glass is dried in cylinder is gradually reduced, and observes the reading of Pressure gauge 4 Number, when exsiccator internal gas pressure is too small or close to zero, is difficult to open exsiccator, then opens the hose clip 6 on latex tubing 5, by nitrogen Gas is passed through exsiccator, along with being passed through of nitrogen, observes the reading of Pressure gauge 4, when air pressure restores balance, i.e. external pressure in exsiccator When power is equal to an atmospheric pressure, stops being passed through nitrogen, step up the hose clip 6 on latex tubing 5.Easily open exsiccator, carry out Move, take out, put into testing sample operation, close exsiccator.Repeat aforesaid operations.

Save in prior art, when pressure is too small in exsiccator, need to manually remove the operation of broadside frosted lid venting Program, saves manpower, reduces the impact on experimental subject in dry run.

Claims

1. a nitrogen reduced vacuum glass desicator, is dried cylinder (1), glass ledge (2), porcelain plate (3) and Pressure gauge including glass (4), Pressure gauge (4) is placed in glass ledge (2) top, and porcelain plate (3) is placed in along width edge (1-1) that glass is dried in cylinder (1), porcelain plate (3) multiple hole (3-1) not of uniform size it has been uniformly distributed on, it is characterised in that: also include the gas being positioned in glass ledge (2) Latex tubing (5) that body entrance (2-1) is connected with gas access (2-1) and the hose clip (6) being clipped on latex tubing (5).