Drying box for nitrocotton experimental analysis

Abstract

The utility model relates to the technical field of nitrocotton, in particular to a drying box for nitrocotton experimental analysis, which comprises a box body and a plug, a vacuum pump is fixedly mounted on the side edge of the box body, a drawing box is arranged in the middle of the box body, the drawing box is slidably connected with the box body through pulleys, a handle is mounted on the outer side of the drawing box, and the plug is connected with the handle. A filter screen is arranged at the bottom of the drawing box, a switch is embedded in the side of the box body, a dry ice box is fixedly connected between the handle and the bottom of the box body, sliding grooves are formed in the two sides of the dry ice box, the dry ice box is slidably connected with the box body through rolling wheels in the sliding grooves, and a net-shaped partition plate is placed in the dry ice box. According to the drying box for nitrocotton experimental analysis, the layered drawing box is arranged, through the design, when too much nitrocotton needs to be placed in the experimental process, the nitrocotton can be placed in the drawing box in a layered mode, the nitrocotton can be prevented from being stacked together, and the experimental safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrocellulose, in particular to a drying box for nitrocellulose experimental analysis. Background Art

[0002] Nitrocellulose is white or slightly yellow fiber flocculent. Nitrocellulose can be divided into industrial nitrocellulose, that is, nitrocellulose with a nitrogen mass fraction of 10.8-12.3%. This type of nitrocellulose is mainly used in coatings, inks and other industries; and energetic nitrocellulose, that is, nitrocellulose with a nitrogen mass fraction higher than 12.3%. This type of nitrocellulose is mainly used in propellants, etc. Nitrocellulose is a flammable and explosive hazardous chemical. For the above-mentioned industrial nitrocellulose, since dry nitrocellulose is extremely easy to spontaneously combust, people use experimental analysis to test the reflection of the nitrocellulose in the drying box. In the past, the drying box used for nitrocellulose experimental analysis was dried by electric heating, which was unsafe and consumed a lot of electricity. At the same time, the previous drying boxes were all single cabinets, which could not be layered and could not compare the changes in nitrocellulose at different heights, resulting in imprecise experiments. Therefore, a nitrocellulose experimental analysis drying box is needed to solve the above problems. Utility Model Content

[0003] The utility model aims to provide a drying box for nitrocellulose experimental analysis, so as to solve the problems that the existing device proposed in the above background technology uses electric heating for drying, is unsafe, consumes a lot of electricity and has a relatively simple structure.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a drying box for nitrocellulose experimental analysis, comprising a box body, a plug, a vacuum pump fixedly installed on the side of the box body, a pull-out box provided in the middle of the box body, the pull-out box is slidably connected to the box body through a pulley, a handle is installed on the outside of the pull-out box, a filter is provided at the bottom of the pull-out box, a switch is embedded in the side of the box body, an analytical instrument is installed next to the switch, a handle is installed on the top of the box body, a dry refrigerator is fixedly connected between the handle and the bottom of the box body, slide grooves are provided on both sides of the dry refrigerator, the dry refrigerator is slidably connected to the box body through rollers inside the slide grooves, a mesh partition is placed inside the dry refrigerator, and the plug is embedded in the side of the box body;

[0005] Preferably, the vacuum pump is snap-connected to the box body through a groove on the side of the box body.

[0006] Preferably, the handle is fixed at the middle position of the pull-out box by welding.

[0007] Preferably, the dry ice box is embedded in the rear side of the cabinet, and the dry ice box and the cabinet are separate structures.

[0008] Preferably, the pull-out box and the dry refrigerator both adopt a layered structure, and each layer structure of the pull-out box is at the same height as each layer structure of the dry refrigerator.

[0009] Preferably, the analytical instrument is embedded in the left side of the box and maintained at the same level as the switch.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The drying box for nitrocellulose experimental analysis is provided with a layered pull-out box. With this design, when too much nitrocellulose needs to be placed during the experiment, the nitrocellulose can be placed in the pull-out box in layers, which can prevent the nitrocellulose from piling up and improve the safety of the experiment. By providing slides on both sides of the dry ice box, the dry ice box can slide back and forth, which is convenient for timely replacement of dry ice in the dry ice box. By providing a vacuum machine, the drying box can be evacuated to quickly dry the nitrocellulose. By providing an analytical instrument, the value of the nitrocellulose when it is dried can be observed, thereby analyzing the results of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a front view structural schematic diagram of the utility model;

[0013] Figure 2 This is a schematic diagram of the dry refrigerator structure of the utility model;

[0014] Figure 3 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 4 This is a three-dimensional structural diagram of the utility model refrigerator;

[0016] Figure 5 It is a side view structural schematic diagram of the utility model.

[0017] In the figure: 1. box body; 2. vacuum pump; 3. pull-out box; 301. pulley; 302. handle; 4. filter; 5. switch; 6. analytical instrument; 7. handle; 8. dry refrigerator; 801. slide; 802. roller; 803. mesh partition; 9. plug. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-5 , an embodiment provided by the utility model:

[0020] A drying box for nitrocellulose experimental analysis, comprising: a drying box for nitrocellulose experimental analysis, comprising a box body 1, a plug 9, a vacuum pump 2 fixedly installed on the side of the box body 1, a pull-out box 3 is arranged in the middle of the box body 1, the pull-out box 3 is slidably connected to the box body 1 through a pulley 301, a handle 302 is arranged on the outside of the pull-out box 3, a filter screen 4 is arranged at the bottom of the pull-out box 3, a switch 5 is embedded in the side of the box body 1, an analytical instrument 6 is installed next to the switch 5, a handle 7 is installed on the top of the box body 1, a dry refrigerator 8 is fixedly connected between the handle 7 and the bottom of the box body 1, slide grooves 801 are arranged on both sides of the dry refrigerator 8, the dry refrigerator 8 is slidably connected to the box body 1 through rollers 802 inside the slide grooves 801, a mesh partition 803 is placed inside the dry refrigerator 8, and the plug 9 is embedded in the side of the box body 1.

[0021] As a further step of the present invention, the vacuum pump 2 is connected to the box body 1 by snapping through the groove on the side of the box body 1, so that the vacuum pump 2 is easy and quick to install and repair, can withstand sufficient pressure, and saves raw material costs;

[0022] As a further step of the present invention, the handle 302 is fixed at the middle position of the pull-out box 3 by welding, so that people can pull the push-pull box more labor-savingly and maintain a certain aesthetics. The handle is provided with an anti-slip pad to prevent the hand from falling off when the pull-out box 3 is pulled out, causing the nitrocellulose to shake, generate friction, and cause fire and explosion, thereby ensuring the safety of the experiment;

[0023] As a further step of the present invention, the dry ice box 8 is embedded in the rear side of the box body 1, and the dry ice box 8 and the box body 1 are separated structures. The dry ice box 8 can slide through the roller 802 inside the slide groove 801, so that the dry ice box can replace the dry ice in time, which provides convenience for the experiment;

[0024] As a further step of the present invention, both the drawer box 3 and the dry ice box 8 adopt a layered structure, and each layer of the drawer box 3 is at the same height as each layer of the dry ice box 8, so that the dry ice can quickly absorb the surrounding heat, preventing the digestive cotton from exploding due to excessive temperature when drying.

[0025] As a further step of the present invention, the analyzer 6 is embedded in the left side of the box 1 and is kept at the same height as the switch 5. When it is found that the value of the analyzer 6 is too high and is about to reach the explosion point, the switch 5 can be closed in time;

[0026] Working principle: when it is necessary to conduct a drying experiment on nitrocellulose, open the drawer box 3 in the box body 1 through the handle 302, then place the nitrocellulose in layers on the filter screen 4 at the bottom of the drawer box 3, then pull out the dry ice bin 8 through the handle 7, and then place the dry ice in layers on the mesh partition 803. After placing the dry ice, put the dry ice bin back to its original position, then plug in the plug 9, turn on the switch 5, and then the vacuum pump 2 starts to work, and the dry ice cools the nitrocellulose. Due to the filter screen, the dry ice can pass through the filter screen and begin to absorb heat from the inside of the box body 1. Since the dry ice is solid carbon dioxide, no water droplets will be produced, and the box is full of carbon dioxide, so the nitrocellulose cannot burn, and the explosion of the nitrocellulose is controlled. After a period of time, turn off the vacuum pump 2, and the other gases in the box body 1 are sucked away by the vacuum pump, leaving only the carbon dioxide produced when the dry ice sublimates. Then, through the observation and analysis instrument 6, the state of the nitrocellulose in the box body 1 is recorded through data, and the operation ends here.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A drying box for nitrocellulose experimental analysis, comprising a box body (1) and a plug (9), characterized in that: A vacuum pump (2) is fixedly installed on the side of the box body (1), a pull-out box (3) is provided in the middle of the box body (1), the pull-out box (3) is slidably connected to the box body (1) through a pulley (301), a handle (302) is installed on the outside of the pull-out box (3), a filter (4) is arranged at the bottom of the pull-out box (3), a switch (5) is embedded in the side of the box body (1), an analysis instrument (6) is installed next to the switch (5), a handle (7) is installed on the top of the box body (1), a dry refrigerator (8) is fixedly connected between the handle (7) and the bottom of the box body (1), slide grooves (801) are provided on both sides of the dry refrigerator (8), the dry refrigerator (8) is slidably connected to the box body (1) through rollers (802) inside the slide grooves (801), a mesh partition (803) is placed inside the dry refrigerator (8), and the plug (9) is embedded in the side of the box body (1).

2. A drying oven for nitrocellulose experimental analysis according to claim 1, characterized in that: The vacuum pump (2) is snap-connected to the box body (1) via a groove on the side of the box body (1).

3. A drying box for nitrocellulose experimental analysis according to claim 1, characterized in that: The handle (302) is fixed at the middle position of the drawer box (3) by welding.

4. A drying oven for nitrocellulose experimental analysis according to claim 1, characterized in that: The dry ice box (8) is embedded in the rear side of the box body (1), and the dry ice box (8) and the box body (1) are of separate structures.

5. A drying oven for nitrocellulose experimental analysis according to claim 1, characterized in that: The drawer box (3) and the dry refrigerator (8) both adopt a layered structure, and each layer of the drawer box (3) is at the same height as each layer of the dry refrigerator (8).

6. A drying oven for nitrocellulose experimental analysis according to claim 1, characterized in that: The analytical instrument (6) is embedded in the left side of the box (1) and is kept at the same level as the switch (5).

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