Heating device for detecting purity of fine aluminum powder

Abstract

The utility model discloses a heating device for detecting the purity of fine aluminum powder, and belongs to the technical field of experimental equipment of daily chemical products. The heating device for detecting the purity of the fine aluminum powder further comprises a heat conducting plate fixedly arranged on the upper side of the metal plate. A heat-conducting pad is fixedly arranged on the upper side of the heat-conducting plate; the upper side of the heat conduction pad abuts against the sleeve shell. The upper end of the sleeve shell abuts against the upper cover plate. The outer sides of the sleeve shell and the heat conduction pad are sleeved with heat preservation cotton. A filter is clamped on the inner side of the sleeve shell; the upper end of the filter is lower than the lower end face of the upper cover plate; a plurality of layers of waterproof breathable films are arranged on the inner side of the filter; by arranging heat preservation cotton, the heat preservation performance is improved, the heat loss of the test tube and the measuring cup in the using process is reduced, and the heating effect is improved; an experimenter is protected through wrapping of the heat preservation cotton, and the experimenter is prevented from being hurt due to the fact that poor-quality test tubes are used or the test tubes are exploded under the large temperature difference condition; by arranging the filter, moisture in water vapor is filtered out to be attached to a test tube or a measuring cup, and clamping of experimenters is affected.

Description

Technical Field

[0001] The utility model belongs to the technical field of daily chemical product experimental equipment, and more specifically relates to a heating device for detecting the purity of fine aluminum powder. Background Art

[0002] Aluminum powder is one of the main components of aluminothermic flux. Aluminum powder made from 99.9% pure aluminum ingots often contains a small amount of aluminum oxide and silicon dioxide. The EDTA titration method can be used to determine the content of metallic aluminum (also known as active aluminum) in aluminum powder. Hydrochloric acid, sodium bicarbonate, EDTA standard solution, etc. are used for titration reaction, and the final titration end point is the change in color of copper sulfate standard solution. This method is accurate in determining the aluminum content, but the test tube is heated by an alcohol lamp, and the steps are relatively cumbersome; uneven heating of the heating device will lead to poor heating effect, thus affecting the reliability of the test results.

[0003] For example, a fine aluminum powder purity detection device with patent application number CN202122727191.X includes a box, a test tube rack, and a volumetric flask. The box is provided with a containing chamber, and the containing chamber is provided with a test tube rack and a volumetric flask. The bottom of the box is provided with a heating coil, and the upper surface of the heating coil is provided with an asbestos mesh pad. The volumetric flask is placed on the upper surface of the asbestos mesh pad. A stirring rod is vertically provided inside the volumetric flask, and the stirring rod is connected to a micro motor through a coupling. The stirring rod can be freely disassembled from the coupling. The micro motor is fixed to the telescopic end of the telescopic sleeve rod, and the other end of the telescopic sleeve rod is fixed to the hydraulic cylinder, and the hydraulic cylinder is fixed to the support column. The upper layer of the test tube rack has multiple groups of test tube holes, and the inner side of the test tube hole is provided with a rubber ring, and a heating cloth sleeve is provided below the test tube hole on the test tube rack. The fine aluminum powder purity detection device is convenient for heating, uniform mixing, and strong practicality.

[0004] Although the above-mentioned fine aluminum powder purity detection device is easy to heat and mixes evenly, the heat loss is large during the heating process; if it is used in an occasion where the external environment is relatively cold, the test tube and the measuring cup will be subjected to a large temperature difference, which may easily cause the test tube and the measuring cup to burst; the heat diffusion during the heating process is not uniform enough. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a heating device for detecting the purity of fine aluminum powder. The device has uniform heating, small heat loss, good heating effect and protects the detection experiment personnel.

[0006] The utility model discloses a heating device for detecting the purity of fine aluminum powder, comprising a shell; the upper end of the shell is clamped with an upper cover plate; the upper end surface of the upper cover plate is provided with three test tube slots; the upper end surface of the upper cover plate is provided with a measuring cup slot; the upper end of the upper cover plate is embedded with a temperature sensor; the detection end of the temperature sensor passes through the upper cover plate; a motor 1 is fixedly arranged on one side of the shell close to the measuring cup slot; the output end of the motor 1 is fixedly connected to a threaded rod; the threaded rod is threadedly connected to a platform plate; a motor 2 is fixedly arranged on the upper end of the platform plate; the output end of the motor 2 passes through The platform plate is fixedly connected to the rotating shaft; the outer circumference of the rotating shaft is fixedly connected to the fan blades; an electric heating tube is fixedly arranged at the lower end of the inner side of the shell; a metal plate is fixedly arranged on the upper end of the electric heating tube of the shell; it also includes a heat conducting plate fixedly arranged on the upper side of the metal plate; a thermal conducting pad is fixedly arranged on the upper side of the heat conducting plate; the upper side of the thermal conducting pad abuts against the casing; the upper end of the casing abuts against the upper cover plate; thermal insulation cotton is arranged on the outer side of the casing and the thermal conducting pad; a filter is clamped on the inner side of the casing; the upper end of the filter is lower than the lower end surface of the upper cover plate; a multi-layer waterproof and breathable membrane is arranged on the inner side of the filter.

[0007] Preferably, the number of the fan blades is eight; and the longitudinal cross-section of the fan blade is trapezoidal.

[0008] Preferably, the multi-layer waterproof and breathable membrane inside the filter is made of expanded polytetrafluoroethylene.

[0009] Preferably, the casing is made of thermally conductive silicone; the inner side walls of the casing correspond to the test tube slot and the measuring cup slot respectively.

[0010] Preferably: two gaskets are fixedly arranged on both sides of the motor; the upper end surface of each gasket is fixedly connected to a balancing rod; the balancing rod is slidably connected to the platform plate; the threaded rod and the upper ends of the two balancing rods are rotatably connected to a limiting plate.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] (1) By setting up thermal insulation cotton, the thermal insulation performance is improved, the heat loss of the test tube and measuring cup during use is reduced, and the heating effect is improved; the wrapping of the thermal insulation cotton also protects the experimenter, preventing the use of inferior test tubes or the test tubes from bursting and injuring the experimenter under the condition of large temperature difference; by setting up a filter, the moisture in the water vapor is filtered out and attached to the test tube or measuring cup, which affects the experimenter's grip;

[0013] (2) By setting up a shell to wrap the test tube and measuring cup, heat is evenly transferred and the heating effect is good. With the help of the shell, the use of inferior test tubes or the explosion of test tubes in the case of large temperature differences can be prevented to injure the experimenters. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0016] Explanation of the numbers in the figure: 10. Shell; 11. Upper cover; 12. Test tube slot; 13. Limit plate; 14. Threaded rod; 15. Motor 1; 16. Gasket; 17. Temperature sensor; 18. Balance bar; 19. Motor 2; 20. Electric heating tube; 21. Insulation cotton; 22. Shell; 23. Thermal pad; 24. Filter; 25. Platform plate; 26. Rotating shaft; 27. Fan blades; 28. Measuring cup slot; 29. ​​Metal plate; 30. Thermal plate. DETAILED DESCRIPTION

[0017] Specific embodiment 1: Please refer to Figure 1-2 A heating device for detecting the purity of fine aluminum powder comprises a shell 10; the upper end of the shell 10 is clamped with an upper cover plate 11; three test tube grooves 12 are provided on the upper end surface of the upper cover plate 11; a measuring cup groove 28 is provided on the upper end surface of the upper cover plate 11; a temperature sensor 17 is embedded on the upper end of the upper cover plate 11; the detection end of the temperature sensor 17 passes through the upper cover plate 11; a motor 15 is fixedly arranged on the side of the shell 10 close to the measuring cup groove 28; the output end of the motor 15 is fixedly connected to a threaded rod 14; the threaded rod 14 is threadedly connected to a platform plate 25; a motor 2 19 is fixedly arranged on the upper end of the platform plate 25; the output end of the motor 2 19 passes through the platform plate 25 and is fixedly connected to a rotating shaft 26; the outer circumference of the rotating shaft 26 is fixedly connected to a fan blade 27; an electric heating tube 20 is fixedly arranged on the lower end of the inner side of the shell 10; the shell 10 is fixedly arranged on the upper end of the electric heating tube 20 The metal plate 29 also includes a heat-conducting plate 30 fixedly arranged on the upper side of the metal plate 29; a heat-conducting pad 23 is fixedly arranged on the upper side of the heat-conducting plate 30; the upper side of the heat-conducting pad 23 abuts against the casing 22; the upper end of the casing 22 abuts against the upper cover 11; a heat-insulating cotton 21 is sleeved on the outer side of the casing 22 and the heat-conducting pad 23; a filter 24 is clamped on the inner side of the casing 22; the upper end of the filter 24 is lower than the lower end surface of the upper cover 11; a multi-layer waterproof and breathable membrane is arranged on the inner side of the filter 24; by arranging the heat-insulating cotton 21, the heat-insulating performance is improved, the heat loss of the test tube and the measuring cup during use is reduced, and the heating effect is improved; the wrapping of the heat-insulating cotton 21 also protects the experimenter, preventing the use of inferior test tubes or the explosion of the test tubes in the case of large temperature difference from injuring the experimenter; by arranging the filter 24, the moisture in the water vapor is filtered out and adheres to the test tube or the measuring cup, which affects the experimenter's gripping.

[0018] See also Figure 2 The number of the fan blades 27 is eight; the longitudinal cross-section of the fan blade 27 is trapezoidal.

[0019] See also Figure 2The multi-layer waterproof and breathable membrane inside the filter 24 is made of expanded polytetrafluoroethylene; the shell 22 is provided to wrap the test tube and the measuring cup to evenly conduct heat. With the help of the shell 22, the use of inferior test tubes or the explosion of test tubes in the case of large temperature differences to injure experimenters can be prevented.

[0020] See also Figure 1-2 The material of the casing 22 is thermally conductive silicone; the inner side walls of the casing 22 correspond to the test tube slot 12 and the measuring cup slot 28 respectively.

[0021] See also Figure 1 Two gaskets 16 are fixedly arranged on both sides of the motor 15; the upper end surface of each gasket 16 is fixedly connected to a balance rod 18; the balance rod 18 is slidably connected to the platform plate 25; the upper ends of the threaded rod 14 and the two balance rods 18 are rotatably connected to the limit plate 13.

[0022] Working principle: when in use, place the measuring cup in the measuring cup slot 28, place the test tube in the test tube slot 12, and fill water in the cavity between the metal plate 29 and the heat conducting plate 30 in advance; start the electric heating tube 20, and the electric heating tube 20 gradually heats the moisture on the upper side of the metal plate 29 by heating the metal plate 29, and then the water vapor gradually rises. When the water vapor passes through the filter 24, the water vapor is isolated from the moisture by the multi-layer waterproof and breathable membrane in the filter 24, and only hot air flows; the colder air inside the casing 22 has a larger density than the hot air from the inside of the filter 24, and will gradually exchange heat with the hot air, while causing the cold air to slowly sink, and finally the inside of the casing 22 is filled with hot air. At this time, the heat of the hot air inside the casing 22 is transferred to the test tube and measuring cup by the inner wall structure of the casing 22, so that sufficient heat can be obtained during the aluminum powder detection process; the test tube and measuring cup are indirectly wrapped in the thermal insulation cotton 21 to reduce the heat loss of the test tube and measuring cup;

[0023] During the heating process, the motor 15 is started, the platform plate 25 is lowered, and the motor 2 19 is started. The output end of the motor 2 19 rotates to drive the fan blades 27 to stir, so that the reagents are heated evenly during the auxiliary heating process.

[0024] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0025] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the product or system including the elements.

[0026] The above description shows and describes several preferred embodiments of the present application, but as mentioned above, it should be understood that the present application is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the application concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the present application, and should be within the scope of protection of the claims attached to the present application.

Claims

1. A heating device for detecting the purity of fine aluminum powder, comprising a housing (10); the upper end of the housing (10) is clamped with an upper cover plate (11); the upper end surface of the upper cover plate (11) is provided with three test tube slots (12); the upper end surface of the upper cover plate (11) is provided with a measuring cup slot (28); a temperature sensor (17) is embedded in the upper end of the upper cover plate (11); the detection end of the temperature sensor (17) passes through the upper cover plate (11); a motor (15) is fixedly provided on one side of the housing (10) close to the measuring cup slot (28); the motor (15) The output end of the motor (15) is fixedly connected to a threaded rod (14); the threaded rod (14) is threadedly connected to a platform plate (25); a second motor (19) is fixedly arranged on the upper end of the platform plate (25); the output end of the second motor (19) passes through the platform plate (25) and is fixedly connected to a rotating shaft (26); the outer circumference of the rotating shaft (26) is fixedly connected to a fan blade (27); an electric heating tube (20) is fixedly arranged on the lower end of the inner side of the housing (10); a metal plate (29) is fixedly arranged on the upper end of the housing (10) at the electric heating tube (20); the characteristic is that: It also includes a heat conducting plate (30) fixedly arranged on the upper side of the metal plate (29); a heat conducting pad (23) fixedly arranged on the upper side of the heat conducting plate (30); the upper side of the heat conducting pad (23) abuts against the casing (22); the upper end of the casing (22) abuts against the upper cover (11); thermal insulation cotton (21) is sheathed on the outer side of the casing (22) and the heat conducting pad (23); a filter (24) is clamped on the inner side of the casing (22); the upper end of the filter (24) is lower than the lower end surface of the upper cover (11); and a multi-layer waterproof and breathable membrane is arranged on the inner side of the filter (24).

2. A heating device for detecting purity of fine aluminum powder according to claim 1, characterized in that: The number of the fan blades (27) is eight; and the longitudinal cross-section of the fan blade (27) is trapezoidal.

3. A heating device for detecting purity of fine aluminum powder according to claim 1, characterized in that: The material of the multi-layer waterproof and breathable membrane inside the filter (24) is expanded polytetrafluoroethylene.

4. A heating device for detecting purity of fine aluminum powder according to claim 3, characterized in that: The material of the casing (22) is thermally conductive silica gel; the inner side walls of the casing (22) correspond to the test tube groove (12) and the measuring cup groove (28) respectively.

5. The heating device for detecting the purity of fine aluminum powder according to claim 1 is characterized in that: Two gaskets (16) are fixedly arranged on both sides of the motor 1 (15); the upper end surface of each gasket (16) is fixedly connected to a balancing rod (18); the balancing rod (18) is slidably connected to the platform plate (25); and the upper ends of the threaded rod (14) and the two balancing rods (18) are rotatably connected to a limit plate (13).

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