Hanging groove type low-temperature flotation machine for laboratory

Abstract

The utility model discloses a hanging groove type low-temperature flotation machine for a laboratory. The hanging groove type low-temperature flotation machine comprises a flotation machine body, a refrigeration flotation groove and a control panel. The flotation machine body comprises a cantilever, a motor arranged on the cantilever, a rotating shaft and an impeller arranged on the rotating shaft. The refrigeration flotation tank comprises a tank body, a semiconductor refrigeration device arranged at the bottom of the tank body and a temperature sensor. The semiconductor refrigeration device comprises a semiconductor refrigeration chip, a hot end and a cooling fan which are arranged from top to bottom. According to the utility model, large refrigeration equipment such as a compressor, a condenser and an evaporator does not need to be depended on, and the temperature in the tank body is controlled at a lower temperature under the combined action of the semiconductor refrigeration chip, the hot end and the cooling fan; when a flotation test is carried out, the semiconductor refrigeration chip can quickly cool ore pulp in the tank body, and the lowest flotation temperature can be reduced to about zero DEG C; the temperature of the ore pulp can be accurately controlled through the temperature sensor in the tank body and the heat preservation layer of the tank body, and use is very convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of laboratory flotation equipment, in particular to a laboratory hanging trough type low-temperature flotation machine based on semiconductor refrigeration and capable of realizing low-temperature flotation. Background Art

[0002] At present, the flotation collectors widely used in domestic mines are mainly fatty acids, fatty amines and oils. These agents are relatively mature in the application of flotation technology and have the advantages of low cost and wide application range. However, the flotation performance of these traditional collectors is often significantly affected by temperature, and their dispersibility and adsorption performance in low-temperature slurry are poor. In the colder northern regions of my country in winter, heating is usually required to achieve higher flotation indicators, which greatly increases production costs and does not conform to the development concept of "green mines". The development of new low-temperature resistant flotation agents and reagent systems that can adapt to low-temperature flotation can effectively solve the above problems, but it is difficult to achieve a stable low-temperature environment for flotation tests using conventional laboratory flotation equipment.

[0003] Therefore, it is very necessary to develop a flotation machine that can quickly cool down the slurry and achieve temperature control for the research on the performance of flotation agents.

[0004] In view of this, it is necessary to design an improved laboratory hanging trough type low-temperature flotation machine to solve the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, the utility model provides a laboratory hanging trough type low-temperature flotation machine for studying the flotation behavior of minerals under the action of reagents in a low-temperature environment.

[0006] The utility model provides a hanging trough type low-temperature flotation machine for laboratory use, comprising a flotation machine body, a refrigerated flotation tank and a control panel; the flotation machine body comprises a cantilever, a motor arranged on the cantilever, a rotating shaft connected to the driving shaft of the motor and an impeller arranged on the rotating shaft; the refrigerated flotation tank comprises a tank body, a semiconductor refrigeration device arranged at the bottom of the tank body and a temperature sensor; the semiconductor refrigeration device comprises a semiconductor refrigeration chip, a hot end and a heat dissipation fan arranged from top to bottom; the semiconductor refrigeration device, the temperature sensor, the motor and the control panel are electrically connected; the rotating shaft extends to the bottom of the tank body.

[0007] As a further improvement of the present invention, the semiconductor refrigeration device further includes a heat conduction layer arranged between the semiconductor refrigeration chip and the hot end.

[0008] As a further improvement of the present invention, the material of the heat conducting layer is graphene.

[0009] As a further improvement of the present invention, the refrigeration flotation tank is detachably connected to the flotation machine body.

[0010] As a further improvement of the utility model, a waterproof and heat-insulating layer is provided on the outer periphery of the tank body.

[0011] As a further improvement of the present invention, the outer periphery of the temperature sensor is covered with a glass shell.

[0012] As a further improvement of the present invention, the temperature sensor has a built-in thermistor.

[0013] As a further improvement of the utility model, a flotation tank baffle detachably connected to the tank body is further provided on the upper part of the tank body, and the flotation tank baffle extends downward from the top of the tank body.

[0014] As a further improvement of the present utility model, the material of the flotation tank baffle is a heat-insulating material.

[0015] As a further improvement of the present invention, the refrigeration flotation tank is arranged directly below the rotating shaft.

[0016] The beneficial effects of the utility model are:

[0017] The laboratory hanging trough low-temperature flotation machine provided by the utility model controls the temperature in the trough at a relatively low temperature by arranging a semiconductor refrigeration device at the bottom of the trough body and utilizing the semiconductor refrigeration chip, the hot end, and the cooling fan. The utility model does not need to rely on larger refrigeration equipment such as compressors, condensers, and evaporators, and is very convenient to use; when conducting a flotation test, the flotation water can be normal temperature water, and after setting the flotation temperature, the semiconductor refrigeration chip can quickly cool the slurry in the trough body, and the lowest flotation temperature can be reduced to about zero degrees; the temperature sensor in the trough body and the insulation layer of the trough body can accurately control the slurry temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a laboratory hanging trough type low-temperature flotation machine of the utility model.

[0019] Figure 2 for Figure 1 Schematic diagram of the structure of the refrigerated flotation cell.

[0020] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the AA plane.

[0021] The markings of the components in the accompanying drawings are as follows:

[0022] 100-Laboratory hanging trough low-temperature flotation machine; 10-flotation machine body; 1-motor; 2-cantilever; 3-rotating shaft; 20-refrigeration flotation tank; 4-tank body; 5-impeller; 7-base; 9-control panel; 11-flotation tank baffle; 13-semiconductor refrigeration chip; 14-thermal conductive layer; 15-waterproof insulation layer; 16-temperature sensor; 17-hot end; 18-cooling fan. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the scheme of the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0025] In addition, it should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0026] See also Figures 1 to 3 As shown, the utility model provides a laboratory hanging trough low-temperature flotation machine 100, including a flotation machine body 10, a refrigerated flotation tank 20 and a control panel 9. The flotation machine body 10 includes a base 7, a cantilever 2 arranged above the base 7, a motor 1 arranged on the cantilever 2, a rotating shaft 3 connected to the driving shaft of the motor 1, and an impeller 5 arranged on the rotating shaft 3. The refrigerated flotation tank 20 includes a tank body 4, a semiconductor refrigeration device arranged at the bottom of the tank body 4, and a temperature sensor 16. The rotating shaft 3 extends to the bottom of the tank body 4. The semiconductor refrigeration device includes a semiconductor refrigeration chip 13, a hot end 17 and a heat dissipation fan 18 arranged in sequence from top to bottom. The heat dissipation fan 18 is used to dissipate heat from the hot end 17 to protect the semiconductor refrigeration device from being burned, and the heat dissipation fan 18 has a waterproof function.

[0027] The semiconductor refrigeration device, the temperature sensor 16, the motor 1 and the control panel 9 are connected by telecommunication. The control panel 9 controls the motor 1 to drive the rotating shaft 3 and the impeller 5 to rotate, so that the slurry in the tank body 4 flows; the control panel 9 controls the semiconductor refrigeration device in the tank body 4 to adjust the slurry temperature.

[0028] In particular, the semiconductor refrigeration device further includes a heat conducting layer 14 disposed between the semiconductor refrigeration chip 13 and the hot end 17. The heat conducting layer 14 contains graphene with high thermal conductivity, which can quickly transfer heat, increase the temperature difference between the semiconductor refrigeration chip 13 and the hot end 17, and improve the refrigeration effect.

[0029] The refrigerated flotation tank 20 is arranged directly below the rotating shaft 3. The refrigerated flotation tank 20 is detachably connected to the flotation machine body 10. In this embodiment, the refrigerated flotation tank 20 is connected by bolts, which is convenient for disassembly and cleaning.

[0030] The control panel 9 is arranged on the flotation machine body 10, and a display screen is provided on the control panel 9 to display parameters such as pulp temperature and shaft speed, which can be adjusted by pressing buttons. The control panel 9 is connected to the refrigerated flotation tank 20 and the temperature sensor 16 through a circuit to achieve temperature adjustment and temperature control.

[0031] The tank body 4 is used to contain the ore pulp. The top of the tank body 4 is open, so that the rotating shaft 3 is deeply inserted into the tank; a waterproof and heat-insulating layer 15 is arranged on the periphery of the tank body 4. Specifically, the tank body 4 is wrapped with a waterproof and heat-insulating material. Such a configuration reduces the heat transfer between the flotation ore pulp and the external environment, and can better keep the temperature of the ore pulp in the tank body 4 stable.

[0032] The upper part of the tank body 4 is also provided with a flotation tank baffle 11 detachably connected to the tank body 4, and the flotation tank baffle 11 extends downward from the top of the tank body 4. In particular, the flotation tank baffle 11 is made of a heat-insulating material for enriching foam and enhancing heat-insulating effect.

[0033] The temperature sensor 16 has a built-in thermistor. In flotation tests, it is often necessary to adjust the pH value of the ore pulp to achieve an acidic or alkaline flotation environment, so the temperature sensor 16 is wrapped in a glass shell to avoid corrosion and also to avoid damage due to collision.

[0034] The steps and principles of low-temperature flotation achieved by the laboratory hanging trough type low-temperature flotation machine 100 of the utility model are described below:

[0035] Add an appropriate amount of room temperature slurry to the refrigerated flotation cell 20, install the refrigerated flotation cell 20 on the flotation machine body 10, and start the motor 1 through the control panel 9 to drive the rotating shaft 3 to rotate, so that the slurry in the cell body 4 flows evenly, and then set the flotation temperature and turn on the refrigeration function. The semiconductor refrigeration chip 13 absorbs heat as the cold end, and will quickly and evenly cool the slurry through the cell body 4. The temperature sensor 16 has a built-in thermistor to control the slurry temperature. When the slurry temperature has dropped to the set temperature, the temperature control bridge will output a signal to cut off the refrigeration power supply until the slurry temperature rises above the set temperature, and the refrigeration power supply will resume conduction, thereby achieving the purpose of keeping the slurry constant temperature. When the slurry temperature drops to the set value, add the flotation agent to the cell body 4 according to the normal flotation process to adjust the slurry, so that the agent and mineral particles can fully act in the low-temperature slurry environment, insert the flotation cell baffle 11 to enrich the mineral foam, and manually scrape the foam.

[0036] During the entire flotation process, the refrigeration function continues to operate and the average temperature of the slurry is maintained within the range of ±0.5°C of the set temperature; after the flotation is completed, the refrigeration function can be manually turned off through the control panel 9, or the refrigeration function will be automatically disconnected when the refrigeration flotation cell 20 is disassembled.

[0037] In summary, the laboratory hanging trough low-temperature flotation machine 100 of the utility model, by setting a semiconductor refrigeration device at the bottom of the trough body 4, uses the semiconductor refrigeration chip 13, the hot end 17, and the cooling fan 18 to control the temperature in the trough body 4 at a relatively low temperature. The utility model does not need to rely on larger refrigeration equipment such as compressors, condensers and evaporators, and is easy to use; when conducting flotation tests, the flotation water can be normal temperature water. After setting the flotation temperature, the semiconductor refrigeration chip 13 can quickly cool the slurry in the trough body 4, and the lowest flotation temperature can be reduced to about zero degrees; the temperature sensor 16 in the trough body 4 and the insulation layer of the trough body can accurately control the slurry temperature; the graphene heat-conducting layer between the semiconductor refrigeration chip 13 and the hot end 17 quickly transfers heat, and the small cooling fan 18 prevents the semiconductor refrigeration chip from being burned, and can further enhance the cooling effect.

[0038] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A laboratory hanging trough low temperature flotation machine, characterized in that: It includes a flotation machine body, a refrigerated flotation tank and a control panel; the flotation machine body includes a cantilever, a motor arranged on the cantilever, a rotating shaft connected to the driving shaft of the motor and an impeller arranged on the rotating shaft; the refrigerated flotation tank includes a tank body, a semiconductor refrigeration device arranged at the bottom of the tank body and a temperature sensor; the semiconductor refrigeration device includes a semiconductor refrigeration chip, a hot end and a cooling fan arranged from top to bottom; the semiconductor refrigeration device, the temperature sensor, the motor and the control panel are electrically connected; the rotating shaft extends to the bottom of the tank body.

2. The laboratory hanging trough type low temperature flotation machine according to claim 1, characterized in that: The semiconductor refrigeration device further includes a heat conduction layer arranged between the semiconductor refrigeration chip and the hot end.

3. The laboratory hanging trough type low temperature flotation machine according to claim 2, characterized in that: The material of the heat conducting layer is graphene.

4. The laboratory hanging trough type low temperature flotation machine according to claim 1, characterized in that: The refrigeration flotation tank is detachably connected to the flotation machine body.

5. The laboratory hanging trough type low temperature flotation machine according to claim 1, characterized in that: A waterproof and heat-insulating layer is arranged on the outer periphery of the tank body.

6. The laboratory hanging trough type low temperature flotation machine according to claim 1, characterized in that: The outer periphery of the temperature sensor is covered with a glass shell.

7. The laboratory hanging trough type low temperature flotation machine according to claim 6, characterized in that: The temperature sensor has a built-in thermistor.

8. The laboratory hanging trough type low temperature flotation machine according to claim 1, characterized in that: The upper part of the tank body is also provided with a flotation tank baffle which is detachably connected to the tank body, and the flotation tank baffle extends downward from the top of the tank body.

9. The laboratory hanging trough type low temperature flotation machine according to claim 8, characterized in that: The flotation tank baffle is made of heat-insulating material.

10. The laboratory hanging trough type low temperature flotation machine according to claim 1, characterized in that: The refrigeration flotation tank is arranged directly below the rotating shaft.

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