CN211290747U

CN211290747U - Laboratory vacuum dryer

Info

Publication number: CN211290747U
Application number: CN201922480310.9U
Authority: CN
Inventors: 张祺满; 刘炳南
Original assignee: Guangdong Ruisheng Technology Group Co ltd
Current assignee: Guangdong Ruisheng Technology Group Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-08-18
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a laboratory vacuum dryer, include desicator body, desicator lid, locate the sealing washer between desicator body and the desicator lid, all be equipped with the screw socket on desicator body and the desicator lid and the pneumatic valve of being connected with the screw socket, be equipped with handle and manometer on the desicator lid. The laboratory vacuum dryer is externally connected with the pressure gauge and the air valve on the dryer, so that the real-time sensing of the pressure in the dryer and the accurate control of vacuum extraction can be realized, a reliable reference basis is provided for the vacuum environment control of the dryer, and the laboratory vacuum dryer can be used as a common dryer, a vacuum dryer and a dryer filled with inert gas for protection.

Description

Laboratory vacuum dryer

Technical Field

The utility model relates to an experimental facilities instrument technical field, more specifically relates to a laboratory vacuum drying ware.

Background

In the routine operation of a laboratory, often involving storage and transfer of test samples, if dry samples, they cannot be directly exposed to air for too long a time during transfer, otherwise the samples may absorb water and cause the experiment to fail. The laboratory dryer and the industrial dryer have different requirements, are generally small and convenient, and are generally large-scale drying machines for industry. The use of the traditional ordinary desicator in laboratory needs to realize sealed through interface dull polish coating grease matter, and interface position is infected with dust or other substances easily in the operation process, will lead to the desicator leakproofness to worsen. In addition, the ordinary dryer has no pressure difference between the inside and the outside of the dryer, so the sealing performance of the ordinary dryer is not as good as that of a vacuum dryer. The traditional vacuum dryer is connected with a vacuum suction device through a frosted interface, the vacuum extraction degree is difficult to control, the slow control of vacuum cannot be controlled, and the vacuum maintaining time is not ideal. Therefore, there is a need for an improvement in prior art laboratory dryers.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming above-mentioned prior art's at least one not enough, provide a laboratory vacuum drying ware, laboratory vacuum drying ware external manometer and pneumatic valve on the desicator can realize the real-time perception to the desicator internal pressure to and the accurate control of vacuum extraction, provide reliable reference foundation for the vacuum environment control of desicator, just laboratory vacuum drying ware both can regard as ordinary desicator to use, also can do the vacuum drying ware and use, still can regard as the desicator that fills the inert gas protection to use.

The utility model adopts the following technical scheme:

the utility model provides a laboratory vacuum dryer, includes desicator body, desicator lid, locates the sealing washer between desicator body and the desicator lid, all be equipped with the screw socket on desicator body and the desicator lid and the pneumatic valve of being connected with the screw socket, be equipped with handle and manometer on the desicator lid.

The utility model discloses set up the pneumatic valve that screw thread and be connected with the screw thread on the desicator body and on the desicator lid respectively, the pneumatic valve can be connected on the desicator and can 360 degrees rotations, has made things convenient for the selection of the connection angle of intake pipe. In addition, during the vacuum pumping, a single air valve or a double air valve can be selected, and an air valve which is not used can be completely closed. If laboratory requirements require that inert gas be filled and vacuum be pumped, a double gas valve can be used. When the double air valves are adopted, the two air valves are opened simultaneously, and the air inlet speed can be controlled according to the requirement. The pressure gauge on the dryer cover can monitor the pressure in the dryer in real time, so that the control of the air valve can be indicated to further adjust the vacuum degree. Furthermore, the utility model discloses a screw design, when need not extract the vacuum, can be sealed with plug for the screw, can regard as ordinary desicator to use. The laboratory vacuum dryer can be used as a common dryer, a vacuum dryer and a dryer filled with inert gas for protection.

Preferably, the handle is located the centre of desicator lid, and the handle is hollow design, and inside is equipped with the screw socket, and the interface and the screw socket of manometer are connected, and the dial plate of manometer is located the handle top.

Preferably, the pneumatic valve includes the air inlet and with air inlet vertically adjusting valve, adjusting valve establishes needle valve, needle valve screw and the valve body of connecting including overlapping in proper order. The air valve adopts the needle valve, and compared with other traditional control valves, the needle valve has the advantages of sensitive control, easiness in operation, good sealing performance and the like. The needle valve can the rotation regulation elasticity, and further, the needle valve adopts quick change coupler to be connected with the trachea, and its connector can 360 degrees free rotations. Under one atmosphere, the needle valve can be completely closed by screwing the needle valve to the tightest place by bare hands.

Preferably, the dryer cover body is provided with a first screw and a first air valve, the dryer body is provided with a second screw and a second air valve, the first screw is located at 1/2-4/5 of the height of the dryer cover body, and the second screw is located at a position close to the edge of an opening of the dryer body.

Preferably, the sealing ring comprises a first silicone rubber O-shaped sealing ring arranged at the edge of the opening of the dryer body and a second silicone rubber O-shaped sealing ring arranged at the edge of the opening of the dryer cover body and matched with the first silicone rubber O-shaped sealing ring. This experiment is novel need not to use sealed grease, adopts high-quality silicon rubber O type circle sealed both between the desicator upper and lower part. Under the strong pressure difference between the inside and the outside of the dryer, the two sealing rings are basically in a completely sealed state, when the dryer is used, vacuum is drawn to close the air valve, the vacuum maintaining time is long, and the change of the vacuum degree is less than 5% thirty days after the vacuum is drawn.

Preferably, the bottom of the dryer body is provided with a dryer base, and a porous porcelain plate is arranged at a position close to the dryer base.

Preferably, a drying agent is contained below the porous porcelain plate.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model adopts the design of the screw and the double air valves, the vacuum dryer can be used as a common dryer, a vacuum dryer and a dryer filled with inert gas for protection;

(2) the utility model adopts the pressure gauge, the pressure in the dryer can be monitored in real time, thereby the control of the air valve can be indicated and the vacuum degree can be adjusted;

(3) the utility model discloses interface adopts high-quality silicon rubber O type circle to seal about the vacuum dryer, need not any working medium (no grease), does not produce the pollution.

(4) The utility model adopts the needle valve for air inlet control, can precisely control the air input and the air output, greatly improves the problem that the air input and the air output of the traditional dryer are difficult to control, has quick and safe vacuum drying process, and is particularly effective for drying volatile liquid;

(5) the utility model discloses after the extraction vacuum, vacuum hold time is longer than traditional desicator, and is significant to article preservation.

Drawings

Fig. 1 is a structure diagram of the laboratory vacuum dryer of the present invention.

Fig. 2 is a schematic view of the air valve structure.

Description of reference numerals: 100. a dryer body; 110. a porous porcelain plate; 120. a dryer base; 130. a first silicone rubber O-shaped sealing ring; 200. a dryer cover body; 220. a handle; 210. a second silicone rubber O-shaped sealing ring; 310. a needle valve; 320. a needle valve screw; 330. a valve body; 340. an air inlet; 400. and a pressure gauge.

Detailed Description

The drawings of the present invention are for illustration purposes only and are not to be construed as limiting the invention. For a better understanding of the following embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Example 1

As shown in fig. 1, a laboratory vacuum dryer includes a dryer body 100, a dryer cover 200, and a sealing ring disposed between the dryer body 100 and the dryer cover 200, wherein both the dryer body 100 and the dryer cover 200 are provided with a screw and an air valve 300 connected to the screw, and the dryer cover 200 is provided with a handle 220 and a pressure gauge 400. The handle 220 is located in the middle of the dryer cover body 200, the handle 220 is hollow, a screw is arranged inside the handle 220, an interface of the pressure gauge 400 is connected with the screw, and a dial of the pressure gauge is located above the handle 220. The bottom of the dryer body 100 is provided with a dryer base 120, and a porous porcelain plate 110 is provided at a position close to the dryer base 120. The sealing rings include a first silicone rubber O-ring 130 disposed at the opening edge of the dryer body and a second silicone rubber O-ring 210 disposed at the opening edge of the dryer cover 200 and engaged with the first silicone rubber O-ring 130.

The utility model discloses set up the screw socket respectively on desicator body 100 and on desicator lid 200 and the pneumatic valve 300 of being connected with the screw socket, pneumatic valve 300 can be connected on the desicator and can 360 degrees rotations, has made things convenient for the selection of the connection angle of intake pipe. In addition, during the vacuum pumping, a single air valve or a double air valve can be selected, and an air valve which is not used can be completely closed. If laboratory requirements require that inert gas be filled and vacuum be pumped, a double gas valve can be used. When the double air valves are adopted, the two air valves are opened simultaneously, and the air inlet speed can be controlled according to the requirement. The pressure gauge 400 on the lid 200 of the dryer can monitor the pressure in the dryer in real time, so as to indicate the control of the air valve and further adjust the vacuum degree. Furthermore, the utility model discloses a screw design, when need not extract the vacuum, can be sealed with plug for the screw, can regard as ordinary desicator to use. The laboratory vacuum dryer can be used as a common dryer, a vacuum dryer and a dryer filled with inert gas for protection.

As shown in fig. 2, the air valve 300 includes an air inlet 340 and an adjusting valve perpendicular to the air inlet, and the adjusting valve includes a needle valve 310, a needle valve screw 320, and a valve body 330, which are sequentially sleeved and connected. The air valve adopts the needle valve, and compared with other traditional control valves, the needle valve has the advantages of sensitive control, easiness in operation, good sealing performance and the like. Under one atmosphere, the needle valve can be completely closed by screwing the needle valve to the tightest place by bare hands.

The utility model is used for during evacuation drying, at first link to each other air inlet 340 and evacuation source interface pipe, open desicator lid 200, put into and treat the evacuation sample on porous porcelain plate 110, cover

desicator lid

200, 130, first silicon rubber O type sealing washer 130 and second silicon rubber O type sealing washer 210. When the vacuum pumping is started, the hand is pressed on the dryer cover body 200, and the hand can be loosened when a certain vacuum exists in the dryer. After the vacuum is sufficiently drawn, the needle valve 310 is closed, and then the tube is pulled out, and the vacuum drawing is completed. If single valve extraction is carried out, one of the air valves is closed. If a double valve extraction is performed, two gas valves 300 are respectively connected to the pipes for control.

Compared with the traditional dryer, the utility model does not need any working medium (without grease) and produces no pollution. The sealing ring is made of rubber, so that the sealing ring is corrosion-resistant and has long service life. Under the strong pressure difference between the inside and the outside of the dryer, the two sealing rings are basically in a completely sealed state, when the dryer is used, vacuum is drawn to close the air valve, the vacuum maintaining time is long, and the change of the vacuum degree is less than 5% thirty days after the vacuum is drawn.

More specifically, in this embodiment, the dryer cover 200 is provided with a first screw and a first air valve, the dryer body 100 is provided with a second screw and a second air valve, the first screw is located at 1/2-4/5 of the height of the dryer cover 200, and the second screw is located at a position close to the edge of the opening of the dryer body.

More specifically, a desiccant is contained under the porous porcelain plate 110. The dryer can assist in removing moisture from the dryer, keeping the dryer at a low humidity.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not limitations to the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. The utility model provides a laboratory vacuum dryer, its characterized in that includes desicator body (100), desicator lid (200), locates the sealing washer between desicator body (100) and desicator lid (200), all be equipped with the screw socket on desicator body (100) and the desicator lid (200) and pneumatic valve (300) of being connected with the screw socket, be equipped with handle (220) and manometer (400) on the desicator lid (200).

2. Laboratory vacuum dryer according to claim 1, characterized in that the handle (220) is located in the middle of the dryer cover (200), the handle (220) is hollow and has a screw inside, the interface of the pressure gauge (400) is connected to the screw, and the dial of the pressure gauge is located above the handle (220).

3. The laboratory vacuum dryer according to claim 1, wherein the air valve (300) comprises an air inlet (340) and a regulating valve perpendicular to the air inlet (340), and the regulating valve comprises a needle valve (310), a needle valve screw (320) and a valve body (330) which are sequentially sleeved and connected.

4. The laboratory vacuum dryer according to claim 1, wherein the dryer cover (200) is provided with a first screw and a first air valve, the dryer body (100) is provided with a second screw and a second air valve, the first screw is located at 1/2-4/5 of the height of the dryer cover (200), and the second screw is located at a position close to the open edge of the dryer body.

5. The laboratory vacuum dryer according to claim 1, wherein the sealing rings comprise a first silicone rubber O-ring (130) disposed at an open edge of the dryer body and a second silicone rubber O-ring (210) disposed at an open edge of the dryer cover (200) to be fitted with the first silicone rubber O-ring (130).

6. Laboratory vacuum dryer according to claim 1, characterized in that the bottom of the dryer body (100) is provided with a dryer base (120), and in that a perforated porcelain plate (110) is provided adjacent to the dryer base (120).

7. Laboratory vacuum dryer according to claim 6, characterized in that a drying agent is contained below the porous porcelain plate (110).