Microwave digestion tank easy and convenient to plug and unplug

Abstract

The utility model discloses a microwave digestion tank easy and convenient to plug and pull and belongs to the field of analysis. Comprising an outer tank and an inner tank, and the outer tank is of a cylindrical structure; a lining is arranged between the inner tank and the outer tank; a groove is formed in the inner wall of the outer tank; a boss is arranged on the outer wall of the lining; the boss on the outer wall of the lining is matched with the groove on the inner wall of the outer tank; the inner wall of the lining is in a horn mouth shape. The outer circle of the inner tank has taper, and the whole inner tank is of a big-end-up structural shape; and the outer circle of the inner tank is matched with the inner wall of the lining in shape. Therefore, the inner tank of the digestion tank can be inserted and pulled more easily and conveniently, and the working efficiency is greatly improved; and if the inner tank and the outer tank are deformed or corroded and need to be disassembled and taken out, the inner tank and the outer tank are not easily damaged, so that the extra maintenance cost is reduced. The method can be widely applied to the field of design and manufacturing of microwave digestion tanks.

Description

Technical Field

[0001] The utility model belongs to the field of material testing or material analysis, and in particular relates to a microwave digestion tank for sampling. Background Art

[0002] Microwave digestion is a type of wet digestion, which refers to the use of microwaves to heat the digestion solution and sample in a container (usually a sealed container) to destroy the organic matter or reducing substances in the sample, providing a good sample pretreatment method for subsequent detection.

[0003] A microwave digestion tank refers to a reactor that synthesizes chemical substances under certain temperature and pressure conditions. It is widely used in scientific research experiments in the fields of new materials, energy, environmental engineering, etc. It is a commonly used small reactor for scientific research in university teaching, scientific research institutions, and chemical laboratories.

[0004] Generally, the structural design of digestion tanks on the market mostly adopts a double-layer structure of inner and outer tanks. For example, the utility model patent with the authorization announcement date of November 15, 2000 and the authorization announcement number CN2406242Y discloses a "microwave digestion tank" with a double-layer structure of an inner cup (also called inner tank) and an outer cylinder (also called outer tank). The inner tank is usually made of fluoroplastics to resist acid and alkali; the outer tank is generally made of high-strength plastics to provide lateral support.

[0005] For this type of double-layer digestion tank, the inner and outer tanks need to be disassembled and assembled before and after each experiment to add samples and clean the inside of the tank.

[0006] When the digestion tank is of poor quality, the acid environment is bad, the experimental temperature is too high or the pressure is too high, the inner and outer tanks are prone to expansion, deformation or corrosion, making it difficult to disassemble. When disassembling with tools, it may also cause structural damage to the inner and outer tanks, causing greater losses.

[0007] How to make the inner tank of the digestion tank easy and convenient to plug and unplug, improve work efficiency, and if the inner and outer tanks are deformed or corroded and need to be disassembled to remove the inner tank, they will not be easily destroyed, thus reducing maintenance costs, is a technical problem that urgently needs to be solved in actual work. Utility Model Content

[0008] The technical problem to be solved by the utility model is to provide a microwave digestion tank that is easy to plug and unplug. An inner liner is arranged between the inner tank and the outer tank, the inner wall of the inner liner is in a trumpet shape, and the outer circle of the inner tank has a certain taper; in this way, the inner tank of the digestion tank can be plugged and unplugged more easily and conveniently, greatly improving the work efficiency; and if the inner and outer tanks are deformed or corroded and need to be disassembled and taken out, they are not easily destroyed, reducing the additional maintenance cost.

[0009] The technical solution of the utility model is to provide a microwave digestion tank which is easy to plug and unplug, comprising an outer tank and an inner tank, and is characterized in that:

[0010] The outer tank is of cylindrical structure; an inner liner is arranged between the inner tank and the outer tank; a groove is arranged on the inner wall of the outer tank; a boss is arranged on the outer wall of the inner liner; the boss on the outer wall of the inner liner matches the groove on the inner wall of the outer tank; the inner wall of the inner liner is of bell-mouth shape; the outer circle of the inner tank has a taper, and the overall structure is small at the bottom and large at the top; the outer circle of the inner tank matches the inner wall of the inner liner in shape.

[0011] Specifically, the inner wall of the liner has an overall inclination angle β relative to the axial length direction of the liner.

[0012] Furthermore, there is an inclination angle β between the inverted conical surface constituting the inner wall of the liner and the axial axis of the liner.

[0013] Specifically, the outer circle of the inner tank has a taper γ along the axial length direction.

[0014] Furthermore, there is a taper γ between the conical surface constituting the outer circle of the inner tank and the axial axis of the inner tank.

[0015] Specifically, a chamfer α is provided at the top end of the inner wall of the lining.

[0016] Specifically, a flange surface is provided on the upper part of the inner tank; the lower end of the flange surface contacts the top end of the inner wall of the liner.

[0017] Furthermore, an annular flange surface is provided on the outer periphery of the top of the inner tank; the lower end of the flange surface contacts the chamfered portion of the top end of the inner wall of the liner.

[0018] Specifically, the outer circle of the inner tank has a taper γ along the axial length direction; the inner wall of the liner has an inclination angle β along the axial length direction; the taper γ and the inclination angle β are complementary.

[0019] Compared with the prior art, the advantages of the utility model are:

[0020] 1. The technical solution of the utility model is to set an inner liner between the inner tank and the outer tank. The inner liner is installed between the inner tank and the outer tank. The inner wall of the inner liner is in a trumpet shape, and the outer circle of the inner tank has a certain taper. In this way, the inner tank of the digestion tank can be plugged in and out more easily and conveniently, which greatly improves the work efficiency. Moreover, if the inner and outer tanks are deformed or corroded and need to be disassembled and taken out, they are not easily destroyed, which reduces the additional maintenance cost.

[0021] 2. The technical solution of the utility model is that a boss is provided on the outer wall of the liner, which can be stuck in the groove of the inner wall of the outer tank, so that the liner is not easy to fall out;

[0022] 3. The technical solution of the utility model can be applied to the model requirements of the inner tank in the whole series, which improves the versatility. If the inner and outer tanks are deformed or corroded and need to be disassembled and taken out, they are not easily destroyed, which reduces the use and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1a It is a schematic diagram of the external shape of the digestion tank;

[0024] Figure 1b It is a structural schematic diagram of the digestion tank of the utility model;

[0025] Figure 2a It is a schematic diagram of the external shape of the outer tank of the utility model;

[0026] Figure 2b It is a structural schematic diagram of the outer tank of the utility model;

[0027] Figure 3a It is a schematic diagram of the external shape of the lining of the utility model;

[0028] Figure 3b It is a structural schematic diagram of the lining of the utility model;

[0029] Figure 3c yes Figure 3b A magnified schematic diagram of the local structure of the middle A part;

[0030] Figure 4a It is a structural schematic diagram of the inner tank of the utility model;

[0031] Figure 4b It is a structural schematic diagram of the inner tank of the utility model;

[0032] Figure 5 It is a schematic diagram of the inner tank of the utility model being loaded into the outer tank;

[0033] Figure 6 It is a schematic diagram of the inner tank being pulled out of the outer tank of the utility model.

[0034] In the figure, 1 is the outer tank, 1-1 is the groove, 2 is the lining, 2-1 is the boss, 3 is the inner tank, and 3-1 is the flange surface.

[0035] α is the chamfer of the top of the inner wall of the liner, β is the overall inclination of the inner wall of the liner, and γ is the outer taper of the inner tank. DETAILED DESCRIPTION

[0036] The utility model is further described below in conjunction with the accompanying drawings.

[0037] The technical scheme of the utility model provides a microwave digestion tank which is easy to plug and unplug. The structure of the microwave digestion tank consists of an inner tank 3, an outer tank 1 and an inner liner 2. The inner liner is installed between the inner tank and the outer tank.

[0038] The inner wall of the lining is in a trumpet shape, and the outer circle of the inner tank has a certain taper γ; in this way, the inner tank of the digestion tank can be plugged in and out more easily and conveniently, which greatly improves the work efficiency, and if the inner and outer tanks are deformed or corroded and need to be disassembled and taken out, they are not easily destroyed.

[0039] Specifically, Figure 1a and Figure 1b As shown in , the microwave digestion tank is mainly composed of the following parts: an outer tank 1, a lining 2 and an inner tank 3.

[0040] like Figure 2a and Figure 2b As shown in , the outer tank 1 is made of PEEK or other materials as long as the corrosion resistance, temperature resistance, strength and microwave penetration meet the use requirements.

[0041] The outer tank is cylindrical in structure, and a groove 1-1 is provided on the inner wall thereof, which matches with the boss 2-1 on the outer wall of the liner 2 and plays a fixing role to prevent the liner 2 from being pulled out.

[0042] like Figure 3a and Figure 3b As shown in , the lining 2 is made of PTFE or other materials, as long as the corrosion resistance, temperature resistance, strength and microwave penetration meet the use requirements.

[0043] The outer wall of the liner is provided with a boss 2-1, which can match the groove 1-1 on the inner wall of the outer tank 1, so that the liner is not easy to fall out.

[0044] The inner wall of the liner is in a trumpet shape that is smaller at the bottom and larger at the top. The inner wall of the liner has an overall inclination angle β, and the top of the inner wall has a chamfer α to facilitate the insertion and removal of the inner tank 3.

[0045] like Figure 4a and Figure 4b As shown in , the inner tank 3 is made of materials such as TFM1600, as long as the corrosion resistance, temperature resistance, strength and microwave penetration meet the use requirements.

[0046] The model requirements of the inner tank are applicable to the whole series.

[0047] The inner tank is provided with a flange surface 3 - 1 , the lower end of which can be supported by the inner liner 2 .

[0048] There is a taper γ on the outer circle (or outer circumference) of the inner tank, and the overall shape is small at the bottom and large at the top, which matches the shape of the inner wall of the liner 2.

[0049] Obviously, the sum of the absolute values ​​of the inclination angle β of the inner wall of the lining and the taper γ of the outer circle of the inner tank is equal to 180 degrees, that is, they are complementary.

[0050] The actual working process of the utility model is briefly described as follows:

[0051] like Figure 5 As shown in the figure, the liner 2 is first installed into the outer tank 1, and the boss 2-1 of the liner 2 is used to clamp it in the groove 1-1 on the inner wall of the outer tank 1 to make it an integral assembly outer tank combination, so that the liner 2 is not easy to fall out.

[0052] Before the experiment begins, the operator prepares the sample in the inner tank 3 and slowly introduces it into the outer tank assembly. Since the top of the inner wall of the lining 2 is provided with a chamfer α, the overall shape is a trumpet that is larger at the top and smaller at the bottom, and the outer circle of the inner tank 3 has a certain taper, which plays a certain guiding role. Therefore, the introduction of the inner tank 3 will be very smooth without any jamming.

[0053] like Figure 6 As shown in , when the experiment is completed, the liner 2 is slowly pulled out. Since the liner 2 is stuck on the inner wall of the outer tank 1, it will not be pulled out by the inner tank 3.

[0054] With such a structure, the inner tank 3 can be easily plugged in and out, thus greatly improving the working efficiency.

[0055] When the pressure of the outer tank 1 and the inner tank 3 is too large, they are deformed by heat or corroded, the structure of the utility model is easier to pull out than the conventional structure.

[0056] When individual tank bodies are particularly difficult to remove and need to be disassembled with the aid of tools, only the outer tank 1 or the inner tank 3 needs to be disassembled, and the lining 2 can play a certain protective role to prevent the other part from being damaged, thus reducing additional maintenance costs.

[0057] In summary, the characteristics of the digestion tank structure of the utility model are as follows:

[0058] 1. A boss is provided on the outer wall of the liner, which can be stuck in the groove on the inner wall of the outer tank, so that the liner is not easy to fall out.

[0059] 2. The inner wall of the lining is in a trumpet shape, and the outer circle of the inner tank has a certain taper, which is convenient for plugging and unplugging the inner tank and improves the use efficiency.

[0060] 3. The model requirements of the inner tank can be applied to the entire series, which improves versatility; if the inner and outer tanks are deformed or corroded and need to be disassembled and removed, it is not easy to destroy them all, reducing additional maintenance costs.

[0061] The utility model can be widely used in the field of designing and manufacturing microwave digestion tanks.

Claims

1. A microwave digestion tank with easy plugging and unplugging, comprising an outer tank and an inner tank, characterized in that: The outer tank is of cylindrical structure; Between the inner tank and the outer tank, an inner liner is provided; A groove is provided on the inner wall of the outer tank; A boss is provided on the outer wall of the liner; The boss on the outer wall of the liner matches the groove on the inner wall of the outer tank; The inner wall of the lining is in a bell-mouth shape; The outer circle of the inner tank has a taper, and the overall structure is small at the bottom and large at the top; The outer circle of the inner tank and the inner wall of the liner match in shape.

2. The microwave digestion tank with easy plugging and unplugging according to claim 1, characterized in that The inner wall of the liner has an overall inclination angle β relative to the axial length direction of the liner.

3. The microwave digestion vessel with easy plugging and unplugging according to claim 1, characterized in that there is an inclination angle β between the inverted conical surface constituting the inner wall of the liner and the axial axis of the liner.

4. The microwave digestion tank with easy plugging and unplugging according to claim 1, characterized in that the outer circle of the inner tank has a taper γ along the axial length direction.

5. The microwave digestion tank with easy plugging and unplugging according to claim 1, characterized in that there is a taper γ between the conical surface constituting the outer circle of the inner tank and the axial axis of the inner tank.

6. The microwave digestion tank with easy plugging and unplugging according to claim 1, characterized in that A chamfer α is provided at the top end of the inner wall of the lining.

7. The microwave digestion tank with easy plugging and unplugging as claimed in claim 1, characterized in that a flange surface is provided on the upper part of the inner tank; the lower end of the flange surface contacts the top end of the inner wall of the lining.

8. The microwave digestion vessel with easy plugging and unplugging according to claim 5, characterized in that An annular flange surface is arranged on the outer periphery of the top of the inner tank; the lower end of the flange surface contacts the chamfered portion of the top end of the inner wall of the liner.

9. The microwave digestion tank with easy plugging and unplugging according to claim 1, characterized in that The outer circle of the inner tank has a taper γ along the axial length direction; The inner wall of the liner has an inclination angle β along the axial length direction; The taper γ is complementary to the inclination angle β.

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