Compression-resistant soft rubber plug for laboratory distillation and laboratory distillation device

Abstract

The utility model discloses a pressure-resistant soft rubber plug for laboratory distillation and a laboratory distillation device, and relates to the technical field of distillation flask sealing, the pressure-resistant soft rubber plug comprises a soft rubber plug body and a coarse layer, the soft rubber plug body is of an elastic structure, the soft rubber plug body can deform and has the tendency to recover the original shape when being pressed, and the soft rubber plug body is of a circular truncated cone structure; the coarse layer is integrally arranged on the side wall of the soft rubber plug body to increase the friction coefficient of the side wall of the soft rubber plug body, and the soft rubber plug is simple in structure, convenient to use and capable of effectively sealing the distillation flask.

Description

Technical Field

[0001] The utility model relates to the technical field of distillation flask sealing, in particular to a pressure-resistant soft rubber plug for laboratory distillation and a laboratory distillation device. Background Art

[0002] Currently, the soft rubber plugs or rubber plugs used in the industry are characterized by smooth surfaces.

[0003] The function of distillation in the chemical industry is to use the different boiling points of substances to separate liquid mixtures by heating, and then collect and measure the substances to be tested by condensing them back to liquid. Chemical industry laboratories need to conduct inspections on oil and water quality and other related aspects. The equipment and facilities used for distillation operations include electric furnaces, distillation flasks, sealing rubber plugs, distillation tubes and condensers. First, the substances to be tested are added to the distillation flask, which is then sealed with a rubber plug. The hollow rubber plug is inserted into the distillation tube, which is used for the outlet of the distilled gaseous products produced during the heating process. It is cooled through a condenser and condensed into a liquid for collection and testing.

[0004] The distillation tube and the distillation flask are connected by a soft rubber plug. The reason for using the soft rubber plug is that the soft rubber plug is soft, elastic and easy to punch. After the soft and elastic rubber plug is punched and the tube is inserted, there is no gap between the glass distillation tube and the soft rubber plug. If other materials of rubber plugs are used, such as the resin plugs of various types on the market, the disadvantage of the resin plug is that the material is hard and inelastic. After punching, the glass tube is connected, and there will be a gap between the tube wall and the hole. The gas generated by the distillation flask after heating is easily leaked. The consequence is that the data distortion experiment fails. The current detection method is to connect the distillation flask and the distillation tube with a punched soft rubber plug, and the punched soft rubber plug is used as a sealing connector. The problem is that if the temperature is too high during the distillation process, the gas cooling rate does not match the gas generation rate, resulting in an increase in the gas pressure generated in the distillation flask, distillation tube and cooling tube. At the same time, since the outer wall of the soft rubber plug is relatively smooth, it is easy for the soft rubber plug to pop out from the outlet of the distillation flask. Utility Model Content

[0005] The utility model aims to provide a pressure-resistant soft rubber plug for laboratory distillation and a laboratory distillation device to solve the problems existing in the above-mentioned prior art. The utility model has a simple structure, is easy to use, and can effectively seal the distillation flask.

[0006] To achieve the above purpose, the utility model provides the following solutions:

[0007] The utility model provides a pressure-resistant soft rubber plug for laboratory distillation, comprising: a soft rubber plug body and a rough layer, wherein the soft rubber plug body is an elastic structure, can be deformed when subjected to pressure and has a tendency to restore its original shape, and the soft rubber plug body is a truncated cone structure; the rough layer is integrally arranged on the side wall of the soft rubber plug body to increase the friction coefficient of the side wall of the soft rubber plug body.

[0008] Preferably, the rough layer is formed by grinding the side wall of the soft rubber plug body using 75-85 mesh sandpaper.

[0009] Preferably, the vertical cross-section of the soft rubber plug body is an inverted trapezoid, the cross-sectional area of ​​the first end of the soft rubber plug body is smaller than the cross-sectional area of ​​the second end of the soft rubber plug body, and the first end of the soft rubber plug body is used to extend into the distillation flask.

[0010] Preferably, it also includes a connecting hole, which passes through the first end and the second end of the soft rubber plug body, and is used to allow the glass tube of the glass tube instrument to pass through the connecting hole into the distillation flask and to squeeze and fix the glass tube of the glass tube instrument.

[0011] Preferably, the soft rubber plug body is made of rubber material.

[0012] The utility model also provides a laboratory distillation device, comprising: the pressure-resistant soft rubber plug for laboratory distillation as described in any one of the above items.

[0013] Compared with the prior art, the utility model has achieved the following technical effects:

[0014] The utility model provides a pressure-resistant soft rubber plug for laboratory distillation and a laboratory distillation device. The soft rubber plug body is squeezed and plugged into the bottle mouth of a distillation flask. The soft rubber plug body with an elastic structure can seal the bottle mouth of the distillation flask through extrusion deformation, and a rough layer is provided on the outer side wall of the soft rubber plug body to increase the friction coefficient between the soft rubber plug body and the distillation flask, so that when the gas pressure generated by the distillation flask during the distillation process is appropriately increased, the soft rubber plug body can be effectively prevented from popping out. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a front cross-sectional view of the compression-resistant soft rubber plug for laboratory distillation provided by the utility model;

[0017] Figure 2 A bottom view of the compression-resistant soft rubber plug for laboratory distillation provided by the utility model;

[0018] Figure 3 A schematic diagram of the structure of a laboratory distillation device provided by the utility model;

[0019] In the figure: 1. soft rubber stopper body; 2. rough layer; 3. distillation flask; 5. glass tube instrument; 6. first end of the soft rubber stopper body; 7. second end of the soft rubber stopper body. DETAILED DESCRIPTION

[0020] 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 them. Based on the embodiments of 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.

[0021] The utility model aims to provide a pressure-resistant soft rubber plug for laboratory distillation and a laboratory distillation device to solve the problems existing in the above-mentioned prior art. The utility model has a simple structure, is easy to use, and can effectively seal the distillation flask.

[0022] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] Embodiment 1

[0024] This embodiment provides a pressure-resistant soft rubber plug for laboratory distillation, such as Figures 1-2 As shown, it includes: a soft rubber plug body 1 and a rough layer 2, the soft rubber plug body 1 is an elastic structure, the soft rubber plug body 1 can be deformed when subjected to pressure and has a tendency to restore its original shape, and the soft rubber plug body 1 is a truncated cone structure; the rough layer 2 is integrally arranged on the side wall of the soft rubber plug body 1 to increase the friction coefficient of the side wall of the soft rubber plug body 1, and the soft rubber plug body 1 is squeezed into the mouth of the distillation flask 3. The soft plug body 1 with an elastic structure can seal the mouth of the distillation flask 3 by extrusion deformation, and by arranging the rough layer 2 on the outer side wall of the soft rubber plug body 1, the friction coefficient between the soft rubber plug body 1 and the distillation flask 3 is increased, so that when the gas pressure generated by the distillation flask 3 during the distillation process is appropriately increased, the soft rubber plug body 1 can be effectively prevented from popping out.

[0025] In a preferred scheme of the present embodiment, the rough layer 2 is formed by grinding the side wall of the soft rubber plug body 1 with 75-85 mesh sandpaper, and 80 mesh sandpaper is preferably used. According to the coarseness of the sandpaper, the surface particle size of the soft rubber plug body 1 after grinding with 80 mesh sandpaper is, the surface is rough and has a concave-convex feeling, and the resistance of the soft rubber plug body 1 after being inserted into the bottle increases; after the surface is polished with 800 mesh sandpaper, the surface has small concave-convex shapes, and when the polished soft rubber plug body 1 is inserted into a glass bottle, the resistance increases slightly; after the soft rubber plug body 1 is polished with 3000 mesh sandpaper, the surface of the plug has obvious scratches, and when the polished plug is inserted into the bottle, the resistance feels normal; then a pressure test is carried out, and the distillation flask 3 containing the sample is equipped with three kinds of polished plugs and placed in an electric furnace for a pressure test. The test proves that the soft rubber plug body 1 polished with 80 mesh sandpaper is more resistant to pressure and has a protective pop-up action. The air tightness test was conducted, and no deflation or leakage occurred due to the looseness of the rubber plug during the distillation test, which ensured the effectiveness of the distillation test. The surface of the soft rubber plug was polished with 80-grit sandpaper to increase the friction of the surface, so that after it was connected to the smooth glass distillation bottle 3, its pressure resistance after the gas pressure gradually increased during the distillation process was increased. At the same time, it can ensure that the soft rubber plug can be protectively ejected after the pressure in the bottle body increases during the distillation process, without the risk of explosion.

[0026] In a preferred scheme of the present embodiment, the vertical cross-section of the soft plug body 1 is an inverted trapezoid, the cross-sectional area of ​​the first end 6 of the soft plug body is smaller than the cross-sectional area of ​​the second end 7 of the soft plug body, and the first end 6 of the soft plug body is used to extend into the distillation flask 3, so as to facilitate the insertion of the soft plug body 1 into the distillation flask 3, and as the extension increases, the extrusion deformation increases, and the friction provided is greater.

[0027] In a preferred scheme of the present embodiment, the pressure-resistant soft rubber plug for laboratory distillation also includes a connecting hole, which passes through the first end 6 and the second end of the soft rubber plug body. The connecting hole is used to allow the glass tube of the glass tube instrument 5 to pass through the connecting hole into the distillation flask 3 and to squeeze and fix the glass tube of the glass tube instrument 5.

[0028] In a preferred solution of this embodiment, the soft rubber plug body 1 is made of rubber material, and the rubber material has good toughness and elasticity.

[0029] Embodiment 2

[0030] This embodiment also provides a laboratory distillation device, such as Figure 3 As shown, it includes: a pressure-resistant soft rubber plug for laboratory distillation as in Example 1, a distillation flask 3 and a glass tube instrument 5, the pressure-resistant soft rubber plug for distillation is plugged into the bottle mouth of the distillation flask 3, and the glass tube of the glass tube instrument 5 extends into the distillation flask 3 from the connecting hole.

[0031] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A pressure-resistant soft rubber plug for laboratory distillation, characterized in that: include: A soft rubber plug body, which is an elastic structure, can be deformed when subjected to pressure and has a tendency to restore its original shape, and is a truncated cone structure; and a rough layer, which is integrally arranged on the side wall of the soft rubber plug body to increase the friction coefficient of the side wall of the soft rubber plug body.

2. The pressure-resistant soft rubber plug for laboratory distillation according to claim 1, characterized in that: The rough layer is formed by grinding the side wall of the soft rubber plug body using 75-85 mesh sandpaper.

3. The pressure-resistant soft rubber plug for laboratory distillation according to claim 1, characterized in that: The vertical cross-section of the soft rubber plug body is an inverted trapezoid, the cross-sectional area of ​​the first end of the soft rubber plug body is smaller than the cross-sectional area of ​​the second end of the soft rubber plug body, and the first end of the soft rubber plug body is used to extend into the distillation bottle.

4. The pressure-resistant soft rubber plug for laboratory distillation according to claim 3, characterized in that: It also includes a connecting hole, which passes through the first end and the second end of the soft rubber plug body. The connecting hole is used to allow the glass tube of the glass tube instrument to pass through the connecting hole into the distillation flask and to squeeze and fix the glass tube of the glass tube instrument.

5. The pressure-resistant soft rubber plug for laboratory distillation according to claim 1, characterized in that: The soft rubber plug body is made of rubber material.

6. A laboratory distillation apparatus, characterized in that: include: The pressure-resistant soft rubber plug for laboratory distillation as claimed in any one of claims 1 to 5.

Images