Digester

Abstract

The utility model relates to the technical field of digestion devices, and discloses a digestion device which comprises a digestion base, a digestion tube and a threaded hole, the digestion tube is detachably mounted in an inner cavity of the digestion base, the threaded hole is formed in the top of the digestion base, and a threaded sleeve is mounted in an inner cavity of the threaded hole in a threaded fit manner. According to the utility model, after the air in the thread bushing is heated, heat in the air is transferred to the thread bushing, when the heat in the air is transferred to the thread bushing, a certain amount of heat is consumed firstly, meanwhile, due to the fact that the intermolecular distance of solids is small and the interaction among molecules is strong, energy can be transferred quickly, and compared with the prior art, the intermolecular distance of the air is large, so that the energy can be quickly transferred. The heat conduction rate is low due to weak interaction between molecules, so that the temperature of the threaded sleeve is slowly increased, the situation of air leakage caused by deformation of the connecting pipe due to high temperature of the threaded sleeve is prevented, heating temperature imbalance of water and a reagent in the digestion pipe is prevented, and the uniformity of chemical process analysis of the reagent is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of digesters, in particular to a digester. Background Art

[0002] The main function of the digester is to accelerate chemical reactions, especially in the sample preparation process. It can effectively destroy organic matter, dissolve suspended solids, and oxidize elements of various valence states into a single high-valence state or convert them into easily separated inorganic compounds.

[0003] The digester is mainly composed of a heating module, a digestion tube, a temperature control system, an air guide tube, a sleeve shaft, a digestion base and a threaded sleeve. The digestion tube is installed inside the digestion base, and the sleeve shaft is fixed to the top of the digestion tube through a threaded sleeve. Then, one end of the air guide tube is connected to the top of the sleeve shaft (such as Figure 2 As shown), when the digester is in use, water and reaction reagents are first introduced into the interior of the digestion tube from the bottom of the digestion tube, and then the temperature of the heating module is controlled by the temperature control system, so that the water and reagents in the digestion tube are quickly heated. The water vapor generated by the heating of the water and reagents first enters the inner part of the envelope shaft and then enters the air guide pipe through the envelope shaft and discharges the water vapor, thereby continuously heating the water and reagents in the digestion tube.

[0004] However, after the existing sleeve shaft is installed inside the sealing sleeve, the outer wall of the sleeve shaft and the inner wall of the sealing sleeve fit together, causing the heat of the sleeve shaft to be quickly transferred to the threaded sleeve. After the threaded sleeve transfers the heat to the air guide tube, the temperature of the outer wall of the air guide tube rises rapidly and deforms, eventually causing air leakage in the air guide tube, causing the heating temperature of the water and reagent in the digestion tube to be unbalanced, thereby reducing the uniformity of the chemical process analysis. Utility Model Content

[0005] In order to make up for the above deficiencies, the present invention provides a solution to improve the problems in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solution: a digester, comprising:

[0007] A digestion base and a digestion tube, wherein the digestion tube is detachably installed in the inner cavity of the digestion base;

[0008] A threaded hole is provided at the top of the digestion base, and a threaded sleeve is installed in the inner cavity of the threaded hole through threaded cooperation, a sealing sleeve shaft is detachably installed in the inner cavity of the threaded sleeve, a polytetrafluoroethylene block is detachably installed in the inner cavity of the sealing sleeve, a through hole communicating with the inner cavity of the threaded sleeve is provided on the top of the threaded sleeve, a connecting pipe is movably installed in the inner cavity of the through hole, a threaded pipe is fixedly installed at one end of the sealing shaft away from its own open end, and a threaded groove adapted to the threaded pipe is provided on the top outer wall of the connecting pipe;

[0009] The adapter pipe is fixedly connected with one end of the connecting pipe away from the threaded pipe, and the adapter pipe is fixedly provided with an air inlet pipe at an end away from the connecting pipe.

[0010] As a further description of the above technical solution:

[0011] The outer diameter of the sleeve shaft is smaller than the inner diameter of the threaded sleeve.

[0012] As a further description of the above technical solution:

[0013] The threaded sleeve is movably provided with a butterfly spring in the inner cavity, and the butterfly spring is sleeved on the outside of the threaded pipe.

[0014] As a further description of the above technical solution:

[0015] The diameter of the tetrafluoro block is greater than the diameter of the top of the digestion pipe.

[0016] As a further description of the above technical solution:

[0017] The threaded sleeve is movably provided with a butterfly spring in the inner cavity, and the butterfly spring is sleeved on the outside of the threaded pipe.

[0018] As a further description of the above technical solution:

[0019] The heat-conducting fin is fixedly installed at one end of the threaded sleeve extending to the outside of the threaded sleeve, and the outer wall of the heat-conducting fin is provided in an "S" shape.

[0020] The utility model has the advantages of:

[0021] In the utility model, when the air inside the threaded sleeve is heated, the heat in the air is transmitted to the threaded sleeve. When the heat in the air is transmitted to the threaded sleeve, a certain amount of heat is consumed first. At the same time, due to the small distance between the molecules of the solid, the interaction between the molecules is strong, and the energy can be rapidly transmitted. In comparison, the distance between the molecules of the air is large, and the interaction between the molecules is weak, resulting in a slow heat conduction rate. Therefore, the threaded sleeve is slowly heated. At the same time, the top of the threaded sleeve is exposed to the air. When the air flows at the top of the threaded sleeve, the top of the threaded sleeve is cooled, which reduces the heating rate of the threaded sleeve again. The temperature of the threaded sleeve is prevented from being too high, which prevents the adapter pipe from deforming and causing air leakage. The heating temperature of the water and the reagent in the digestion pipe is prevented from being out of balance, and the uniformity of the reagent chemical process analysis is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a perspective view of the utility model;

[0023] Figure 2 This is an assembly diagram of the threaded sleeve and the digestion tube of the utility model;

[0024] Figure 3 This is an assembly drawing of the threaded sleeve and the threaded pipe of the utility model;

[0025] Figure 4 This is a schematic diagram of the main structure of the heat-conducting fin of the utility model;

[0026] Figure 5 For this utility model Figure 2 A magnified view of the structure at point A;

[0027] Figure 6 This is an assembly drawing of the heat-conducting fins and threaded sleeves of the utility model.

[0028] Legend:

[0029] 1. Digestion tube; 2. Digestion base; 3. Threaded sleeve; 4. Air inlet pipe; 5. Connecting pipe; 6. Butterfly spring; 7. Threaded pipe; 8. Sealing sleeve shaft; 9. PTFE block; 10. Thermal fins; 11. Heat sink; 12. Connecting pipe. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Reference Figure 1-6 , an embodiment provided by the utility model: a digester, comprising

[0032] The digestion base 2 and the digestion tube 1, the digestion tube 1 can be detachably installed in the inner cavity of the digestion base 2, and the digestion base 2 can provide an installation space for the digestion tube 1. A heating module is installed inside the digestion tube 1. After water and solvent are introduced into the interior of the digestion tube 1, the water and reagent are quickly heated by the heating module to break the chemical bonds in the reagent, thereby realizing the digestion of the reagent. Different types of digesters are suitable for different application scenarios (this is the existing technology and will not be described in detail here).

[0033] A threaded hole is provided at the top of the digestion base 2, and a threaded sleeve 3 is installed in the inner cavity of the threaded hole through threaded fitting. After the digestion tube 1 is installed inside the digestion base 2, the small head end of the threaded sleeve 3 is inserted into the threaded hole, and the digestion base 2 and the threaded sleeve 3 are connected through threaded fitting until the bottom of the large head end of the threaded sleeve 3 fits with the top of the digestion base 2, and the threaded sleeve 3 can be installed.

[0034] A sleeve shaft 8 is detachably mounted in the inner cavity of the threaded sleeve 3, and a PTFE block 9 is detachably mounted in the inner cavity of the sleeve shaft 8. The diameter of the PTFE block 9 is larger than the top diameter of the digestion tube 1. Before the threaded sleeve 3 is installed on the top of the digestion base 2 through the threaded hole, the PTFE block 9 is first placed in the inner cavity of the sleeve shaft 8 until one end of the PTFE block 9 fits with the inner wall of the sleeve shaft 8 away from its own open end, and then the sleeve shaft 8 is placed just above the digestion tube 1. At this time, the other end of the PTFE block 9 fits with the inner wall of the digestion tube 1. The top is fitted, and then the threaded sleeve 3 is connected to the top of the digestion base 2 through the threaded hole until the top of the sleeve shaft 8 is fitted with the inner wall of the threaded sleeve 3 away from its own open end. At this time, the threaded sleeve 3 continues to apply downward pressure to the sleeve shaft 8, which can fix the sleeve shaft 8 on the top of the digestion tube 1, and make one end of the PTFE block 9 fit tightly with the top of the digestion tube 1, preventing the digestion tube 1 and the PTFE block 9 from generating a gap and leaking, thereby improving the sealing between the PTFE block 9 and the top of the digestion tube 1.

[0035] A through hole is provided at the top of the threaded sleeve 3 which is connected to its own inner cavity. A connecting pipe 12 is movably installed in the inner cavity of the through hole. A threaded pipe 7 is fixedly installed at the end of the sleeve shaft 8 away from its own open end. A threaded groove which is compatible with the threaded pipe 7 is provided on the top outer wall of the connecting pipe 12. When the sleeve shaft 8 is fixed directly above the digestion tube 1, one end of the connecting pipe 12 is passed through the through hole and inserted into the interior of the threaded pipe 7. Then, the connecting pipe 12 is rotated to realize the connection between the connecting pipe 12 and the threaded pipe 7 with the cooperation of the thread. The water vapor generated by the heating of the water and reagent inside the digestion tube 1 can quickly enter the interior of the connecting pipe 12 through the Teflon block 9, and the water vapor is quickly discharged through the connecting pipe 12 to avoid rupture due to high air pressure inside the digestion tube 1.

[0036] The diameter of the threaded tube 7 is smaller than the diameter of the sealing shaft 8. When the sealing shaft 8 is installed inside the threaded sleeve 3, the top of the threaded tube 7 passes through the through hole and is flush with the top of the threaded sleeve 3. When the water vapor inside the digestion tube 1 enters the interior of the PTFE block 9, the water vapor transfers part of the heat to the PTFE block 9, and the PTFE block 9 then transfers the heat to the sealing shaft 8. Part of the heat of the sealing shaft 8 is transferred to the threaded tube 7. Since the volume of the threaded tube 7 is small and one end away from the sealing shaft 8 extends to the through hole and is in direct contact with the air, when the sealing shaft When the heat of 8 is transferred to the threaded tube 7, the overall heat dissipation rate of the threaded tube 7 is faster. At the same time, since the connecting tube 12 is connected to the inner wall of the threaded tube 7 through threaded cooperation, the inner wall of the threaded tube 7 can exert an extrusion force on the connecting tube 12. When the threaded tube 7 heats up quickly and transfers the heat to the connecting tube 12, the threaded tube 7 has a certain rigidity, which causes the connecting tube 12 to be slightly deformed by heat and is not easy to stick to the inner wall of the threaded tube 7, making it difficult for water vapor to leak from the connection between the connecting tube 12 and the threaded tube 7.

[0037] One end of the connecting pipe 5 is fixedly connected to the end of the connecting pipe 12 away from the threaded pipe 7, and the end of the connecting pipe 5 away from the connecting pipe 12 is fixedly installed with the air intake pipe 4. The diameter of the connecting pipe 5 is larger than the diameter of the through hole. When one end of the connecting pipe 12 is connected to the threaded pipe 7 through threaded cooperation, the bottom of the connecting pipe 5 and the top of the threaded sleeve 3 fit together, so that the water vapor entering the connecting pipe 12 can enter the interior of the connecting pipe 5 through the connecting pipe 12, and then the water vapor can be discharged through the air intake pipe 4 through the connecting pipe 5.

[0038] The connecting pipe 5 is made of polypropylene material, which can increase the hardness of the connecting pipe 5, making the connecting pipe 5 less likely to bend and age quickly, and improving the smoothness of water vapor entering the interior of the intake pipe 4.

[0039] The outer diameter of the sealing shaft 8 is smaller than the inner diameter of the threaded sleeve 3. There is a gap of 1.5mm to 2mm between the outer wall of the sealing shaft 8 and the threaded sleeve 3. When the heat of the water vapor is transferred to the sealing shaft 8, the heat absorbed by the sealing shaft 8 heats the air inside the threaded sleeve 3. When the air inside the threaded sleeve 3 is heated, the heat in the air is transferred to the threaded sleeve 3. Since the air inside the threaded sleeve 3 has a certain fluidity, when the heat in the air is transferred to the threaded sleeve 3, a certain amount of heat will be consumed first. At the same time, since the distance between the molecules of the solid is small, the interaction between the molecules is strong, and the energy It can be transferred quickly. In contrast, the distance between molecules in air is larger and the interaction between molecules is weaker, resulting in a slower heat conduction rate, so that the threaded sleeve 3 is heated up slowly. At the same time, since the top of the threaded sleeve 3 is exposed to the air, when the air flows over the top of the threaded sleeve 3, it will dissipate heat to the top of the threaded sleeve 3, which further reduces the heating rate of the threaded sleeve 3, prevents the high temperature of the threaded sleeve 3 from causing the connecting tube 5 to deform and leak, prevents the heating temperature of the water and reagent in the digestion tube 1 from being out of balance, and improves the uniformity of the chemical process analysis of the reagent.

[0040] A butterfly spring 6 is movably installed in the inner cavity of the threaded sleeve 3, and the butterfly spring 6 is sleeved on the outside of the threaded tube 7. Before placing the sleeve shaft 8 in the inner cavity of the threaded sleeve 3, the butterfly spring 6 is first sleeved on the outer wall of the threaded tube 7. When the sleeve shaft 8 is placed inside the threaded sleeve 3, one end of the butterfly spring 6 fits against the inner wall of the threaded sleeve 3 away from its own open end, leaving a certain gap between one end of the sleeve shaft 8 and the inner wall of the threaded sleeve 3 away from its own open end, further reducing the rate at which heat from the sleeve shaft 8 is transferred to the threaded sleeve 3.

[0041] A plurality of heat sinks 11 are fixedly installed in an annular distribution in the inner cavity of the threaded sleeve 3, and a plurality of through holes are opened in an annular distribution on the top of the threaded sleeve 3. The top of the heat sink 11 passes through the through holes and extends to directly above the threaded sleeve 3. The heat of the threaded sleeve 3 can be quickly transferred to the heat sink 11. The heat sink 11 absorbs the heat of the threaded sleeve 3, so that the heat of the threaded sleeve 3 can be dissipated, and then the sleeve shaft 8 is indirectly dissipated. The heat sink 11 transfers the absorbed heat from bottom to top to the top of the heat sink 11. Since the top of the heat sink 11 is directly exposed to the air and there is no object to block it, the air flow rate at the top of the heat sink 11 is faster, thereby achieving heat dissipation of the top of the heat sink 11, accelerating the rate at which heat from the bottom of the heat sink 11 is transferred to the top, and the overall heat dissipation rate of the heat sink 11 can be accelerated.

[0042] The heat sink 11 extends to one end outside the threaded sleeve 3 and is fixedly mounted with a thermal fin 10. Both the thermal fin 10 and the heat sink 11 are made of metal copper, which allows the thermal fin 10 and the heat sink 11 to have good heat dissipation. At the same time, the size of the thermal fin 10 is larger than that of the heat sink 11, which can increase the contact area between the thermal fin 10 and the air. When the heat absorbed by the heat sink 11 is transferred to the thermal fin 10, the heat can be quickly dissipated.

[0043] The outer wall of the heat-conducting fin 10 is set to an "S"-shaped structure, which can further increase the contact area between the heat-conducting fin 10 and the air and accelerate the heat dissipation rate.

[0044] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Digester, characterized by: include A digestion base (2) and a digestion tube (1), wherein the digestion tube (1) is detachably mounted in the inner cavity of the digestion base (2); A threaded hole is provided at the top of the digestion base (2), and a threaded sleeve (3) is installed in the inner cavity of the threaded hole through threaded matching, a sleeve shaft (8) is detachably installed in the inner cavity of the threaded sleeve (3), a polytetrafluoroethylene block (9) is detachably installed in the inner cavity of the sleeve shaft (8), a through hole communicating with the inner cavity of the threaded sleeve (3) is provided at the top, a connecting pipe (12) is movably installed in the inner cavity of the through hole, a threaded pipe (7) is fixedly installed at one end of the sleeve shaft (8) away from its own open end, and a threaded groove adapted to the threaded pipe (7) is provided on the top outer wall of the connecting pipe (12); One end of the connecting pipe (5) is fixedly connected to the end of the connecting pipe (12) away from the threaded pipe (7), and the end of the connecting pipe (5) away from the connecting pipe (12) is fixedly mounted with the air intake pipe (4), and the diameter of the connecting pipe (5) is larger than the diameter of the through hole.

2. The digester according to claim 1, characterized in that: The outer diameter of the sleeve shaft (8) is smaller than the inner diameter of the threaded sleeve (3).

3. The digester according to claim 1, characterized in that: A butterfly spring (6) is movably installed in the inner cavity of the threaded sleeve (3), and the butterfly spring (6) is sleeved on the outside of the threaded tube (7).

4. The digester according to claim 1, characterized in that: The diameter of the tetrafluoroethylene block (9) is larger than the top diameter of the digestion tube (1).

5. The digester according to claim 1, characterized in that: A plurality of heat sinks (11) are fixedly mounted in an annular arrangement in the inner cavity of the threaded sleeve (3), and a plurality of through holes are formed in an annular arrangement on the top of the threaded sleeve (3). The tops of the heat sinks (11) pass through the through holes and extend to directly above the threaded sleeve (3), and the outer walls of the heat sinks (11) are in contact with the outer wall of the sleeve shaft (8).

6. The digester according to claim 5, characterized in that: A heat conducting fin (10) is fixedly mounted on one end of the heat sink (11) extending to the outside of the threaded sleeve (3), and the outer wall of the heat conducting fin (10) is configured as an "S"-shaped structure.

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