High-temperature alkali liquor cooling device for cubic boron nitride micro powder

Abstract

The utility model discloses a cubic boron nitride micro-powder high-temperature alkali liquor cooling device, which relates to the technical field of superhard material purification and comprises a clamp, a stirring barrel, a rotary driving mechanism, a support, a base, a rotary table, a stirring device and a water supply mechanism, the clamp is fixedly connected with the rotary table, and the stirring barrel is fixedly connected onto the rotary table through the clamp. The rotating table is rotatably mounted on the base, the base is provided with a rotation driving mechanism for driving the rotating table to rotate, the stirring device and the water supply mechanism are fixed on the bracket, and the stirring device is arranged above an opening of the stirring barrel. The rotary driving mechanism drives the stirring barrel to rotate, and the high-temperature stirring barrel and air are subjected to forced air cooling heat exchange, so that the alkali liquor cooling effect is improved while the stirring function is realized; by arranging the water flow adjusting device, water adding is controllable, and alkali liquor is prevented from overflowing.

Description

Technical Field

[0001] This utility model relates to the field of superhard material purification technology, and in particular to a high-temperature alkaline solution cooling device for cubic boron nitride micropowder. Background Technology

[0002] Cubic boron nitride (HNB) micro powder refers to cubic boron nitride abrasive grains with a particle size of less than 36 / 54 micrometers. It is produced from single-crystal cubic boron nitride abrasive grains through special processes such as crushing, shaping, and purification. The purification process is a crucial step in the production of cubic boron nitride micro powder, mainly including alkali treatment and acid treatment. Alkali treatment involves adding 2-4 times the amount of strong alkalis such as sodium hydroxide or potassium hydroxide to the material and treating it at 300-350℃ for 4-6 hours to remove residual hNB (hexagonal boron nitride) and pyrophyllite. Acid treatment involves using strong acid to remove residual carbon and dolomite, finally obtaining pure cubic boron nitride micro powder. During the alkali treatment process, the high-temperature alkali solution is uniformly mixed with the cubic boron nitride micro powder. If natural cooling is allowed, the process is time-consuming, inefficient, and the solubility of the alkali solution decreases as the temperature drops, making it prone to crystallization and difficult to separate from the material. Therefore, water needs to be continuously added to the high-temperature alkali solution to prevent crystallization, facilitating the separation of the solution from the material.

[0003] Currently, the alkali solution is cooled manually by adding water and constantly stirring to keep it in a solution state. However, due to the high temperature and heat of the alkali solution, burns are a common occurrence during processing; existing equipment has poor heat dissipation and low production efficiency; and the amount of water added is difficult to control, leading to material splashing and economic losses. To address these problems, this new device was designed. Utility Model Content

[0004] In order to solve the problems in the prior art, this utility model provides a high-temperature alkaline solution cooling device for cubic boron nitride micropowder.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A high-temperature alkaline solution cooling device for cubic boron nitride micro powder includes a clamp, a stirring tank, a rotary drive mechanism, and a support. The device further includes a base, a rotating platform, a stirring device, and a water supply mechanism. The clamp is fixedly connected to the rotating platform, the stirring tank is fixedly connected to the rotating platform via the clamp, the rotating platform is rotatably mounted on the base, and the base is provided with a rotary drive mechanism to drive the rotating platform to rotate.

[0007] The stirring device and water supply mechanism are fixed on the bracket, and the stirring device is located above the opening of the stirring tank.

[0008] Preferably, a platform is provided above the base, and a plurality of rollers are evenly arranged on the platform. The rotation axis of the rollers is arranged parallel to the radial direction of the platform. The rotating table is arranged above the platform, coaxial with the platform and parallel to it. The rotating table and the rollers form a rolling engagement.

[0009] Preferably, the rotary drive mechanism includes a motor, which is fixed below the platform, and the motor shaft passes through the central hole of the platform and is fixedly connected to the rotation center of the rotary table.

[0010] Preferably, the clamp includes an arc-shaped clamping part coaxially and symmetrically arranged with the rotary table. One side of the arc-shaped clamping part is fixedly connected to the rotary table, and the bottom of the other side of the arc-shaped clamping part is provided with a flange, which is connected to the rotary table by bolts. Several ribs are provided on the outer side of the arc-shaped clamping part. The mixing tank is fixed on the rotary table through the arc-shaped clamping part.

[0011] Preferably, the stirring device includes a stirring shaft and a stirring paddle. The stirring shaft is a sleeve-type telescopic structure, including a first stirring shaft and a second stirring shaft. The first stirring shaft is sleeved on the outside of the second stirring shaft. A threaded through hole is opened on the first stirring shaft, and an adjustment knob that is threadedly connected to it is connected in the threaded through hole.

[0012] Preferably, the water supply mechanism includes a water tank, which is fixed on a bracket. A water flow regulating device is connected to the lower end of the water tank. A water pipe is provided at the outlet of the water flow regulating device. The water pipe is connected to the second stirring shaft. The water level probe of the water flow regulating device is detachably fixed on the stirring shaft of the stirring device (6).

[0013] Preferably, the second stirring shaft of the stirring device is a hollow structure, the water pipe is connected to the hollow structure, and the part of the second stirring shaft submerged in the alkali solution is evenly provided with a number of water outlets.

[0014] Preferably, the stirring paddle is a cross-shaped stirring paddle or a spiral stirring paddle with a spiral structure.

[0015] The beneficial effects of this utility model are:

[0016] 1. The motor drives the mixing tank to rotate, and the high-temperature mixing tank undergoes forced air cooling heat exchange with the air, which accelerates cooling and improves production efficiency; the ribs not only increase the strength of the clamps, but also act as fans, forcing airflow and further improving the cooling efficiency of the alkali solution; the stirring device remains stationary relative to the support, which can achieve a reliable connection with the water pipe and the stirring shaft.

[0017] 2. By setting a second stirring shaft with a hollow structure, the water pipe is connected to the hollow structure, and the stirring device has the functions of stirring and adding water. The structure is compact and reasonable. The part of the second stirring shaft that is submerged in the mixture has several water outlets evenly arranged, so that the water and the mixture are mixed more evenly and liquid splashing is reduced.

[0018] 3. The water flow regulating device can automatically shut off the water flow based on the water level probe to prevent the mixture from overflowing. Attached Figure Description

[0019] Figure 1 This is a front view schematic diagram of Embodiment 1 of this utility model;

[0020] Figure 2 yes Figure 1 Schematic diagram of the connection between the rotary table and the fixture;

[0021] Figure 3 yes Figure 1 A three-dimensional structural diagram showing the connection relationship between the base, support, water supply mechanism, and stirring device;

[0022] Figure 4 This is a front view schematic diagram of Embodiment 2 of this utility model;

[0023] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] like Figure 1-3 As shown, a high-temperature alkaline solution cooling device for cubic boron nitride micropowder includes a base 1, a platform 11 disposed above the base 1, and a plurality of rollers 12 evenly disposed on the platform 11, the rotation axis of the rollers 12 being arranged parallel to the radial direction of the platform 11. It can be understood that the rollers 12 can also be components with similar functions, such as ball bearings.

[0026] The rotary table 2 is positioned above the platform 11, and the rotary table 2 is coaxial with and parallel to the platform 11.

[0027] The clamp 3 includes an arc-shaped clamping part 32 that is coaxially and symmetrically arranged with the rotary table 2. One side of the arc-shaped clamping part 32 is fixedly connected to the rotary table 2, and the bottom of the other side of the arc-shaped clamping part 32 is provided with a flange 31, which is connected to the rotary table 2 by bolts. Several ribs 33 are provided on the outer side of the arc-shaped clamping part 32. The mixing tank 5 is fixed on the rotary table 2 through the arc-shaped clamping part 32.

[0028] In this embodiment, the rotary drive mechanism includes a motor 4, which is fixed below the platform 11. The motor shaft of the motor 4 passes through the central hole of the platform 11 and is fixedly connected to the rotary table 2.

[0029] The stirring device 6 is fixed on the bracket 8 and set above the stirring tank 5. The stirring device 6 is a sleeve-type telescopic structure, including a first stirring shaft 62 and a second stirring shaft 63. The first stirring shaft 62 is sleeved on the outside of the second stirring shaft 63. The first stirring shaft 62 has a threaded through hole, and an adjustment knob 61 is connected to it in the threaded through hole. The stirring paddle 64 of the stirring device 6 is cross-shaped.

[0030] By turning in the adjustment knob 61, the second stirring shaft 63 can be fixed in the first stirring shaft 62; by turning out the adjustment knob 61, the second stirring shaft 63 can be pulled out from the first stirring shaft 62.

[0031] The water supply mechanism 7 includes a water tank 71, which is fixed on the bracket 8. The lower end of the water tank 71 is connected to a water flow regulating device 72. A water pipe 73 is provided at the outlet of the water flow regulating device 72. The water pipe 73 is fixed to the second stirring shaft 63 by an adjustable cable tie. The water level probe of the water flow regulating device 72 is fixed to the stirring shaft of the stirring device 6 by an adjustable cable tie.

[0032] The water flow regulating device 72 has a built-in solenoid valve. The water flow is controlled by the opening and closing of the solenoid valve through the electrical signal given by the water level probe. The water flow regulating device 72 is existing technology and is not related to the improvement point, so it will not be described in detail here.

[0033] The working process of this utility model is as follows:

[0034] First, remove the bolts from the detachable arc-shaped clamping part 32, place the mixing tank 5 on the rotating table 2, and position it using another arc-shaped clamping part 32. Then, fix the detachable arc-shaped clamping part 32 to the rotating table 2 with bolts. Add the material and strong alkali to the mixing tank 5. After the reaction is complete at high temperature, adjust the adjusting knob 61 of the stirring device 6 to pull the second stirring shaft 63 out from the first stirring shaft 62 and extend it to a suitable position in the mixing tank 5. Then, screw in the adjusting knob 61 to fix the second stirring shaft 63. Next, loosen the cable ties to adjust the height of the water level probe of the water flow regulating device 72 so that it corresponds to the water level warning line of the mixing tank 5. Then, fix the water level probe to the stirring shaft of the stirring device 6 by tightening the cable ties. Turn on the motor 4 to drive the mixing tank 5 to rotate. At this time, the stirring device 6 remains stationary relative to the support 8, while the mixing tank 5 rotates and undergoes forced air cooling heat exchange with the air. The rib plate 33 not only increases the strength of the clamp 3, but also, when the rib plate 33 rotates... Rib 33 can act as a fan, forcing the surrounding air to circulate, which is beneficial for the heat conduction between the air and the mixing tank 5, reducing the cooling time of the alkali solution, and further improving production efficiency. Turn on the water flow regulating device 72 to supply water and adjust the appropriate water flow rate. When the water level probe detects that the liquid level has reached the warning line, it sends a signal to control the water flow regulating device 72 to stop supplying water.

[0035] Example 2:

[0036] like Figure 4 As shown, in this second embodiment, the other structures remain unchanged, except that: the second stirring shaft 63 of the stirring device 6 is a hollow structure, the water pipe 73 is connected to the hollow structure, the part of the second stirring shaft 63 submerged in the alkali solution is evenly provided with a number of water outlets 66, and a spiral stirring paddle 65 with a spiral structure is connected to the second stirring shaft 63.

[0037] The spiral stirring paddle 65 enables the mixture to form an axial flow, improving the stirring effect; the second stirring shaft 63, which is submerged in the alkali solution, is equipped with several water outlets 66, which makes the water flow organization more reasonable, makes the water and solution mix more evenly, and reduces splashing.

[0038] The above embodiments are only used to illustrate and not limit the technical solutions of this utility model. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the utility model without departing from the spirit and scope of the utility model. Any modifications or partial substitutions should be covered within the scope of the claims of this utility model.

[0039] If the terms "first" or "second" are used in this document to define the components, those skilled in the art should know that the use of "first" or "second" is merely for the convenience of describing this utility model and simplifying the description, and unless otherwise stated, the above terms have no special meaning.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0041] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0042] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A high-temperature alkaline solution cooling device for cubic boron nitride micropowder, comprising a clamp (3), a stirring tank (5), a rotary drive mechanism, and a support (8), characterized in that, It also includes a base (1), a rotating platform (2), a stirring device (6) and a water supply mechanism (7). The clamp (3) is fixedly connected to the rotating platform (2). The stirring tank (5) is fixedly connected to the rotating platform (2) through the clamp (3). The rotating platform (2) is rotatably mounted on the base (1). The base (1) is provided with a rotation drive mechanism to drive the rotating platform (2) to rotate. The stirring device (6) and the water supply mechanism (7) are fixed on the bracket (8) and the stirring device (6) is set above the opening of the stirring tank (5).

2. The high-temperature alkaline solution cooling device for cubic boron nitride micropowder according to claim 1, characterized in that, A platform (11) is provided above the base (1), and a number of rollers (12) are evenly arranged on the platform (11). The rotation axis of the rollers (12) is arranged parallel to the radial direction of the platform (11). The rotating table (2) is arranged above the platform (11). The rotating table (2) is coaxial with the platform (11) and arranged in parallel. The rotating table (2) and the rollers (12) form a rolling fit.

3. The high-temperature alkaline solution cooling device for cubic boron nitride micropowder according to claim 2, characterized in that, The rotary drive mechanism includes a motor (4), which is fixed below the platform (11). The motor shaft of the motor (4) passes through the center hole of the platform (11) and is fixedly connected to the rotation center of the rotary table (2).

4. The high-temperature alkaline solution cooling device for cubic boron nitride micropowder according to claim 1, characterized in that, The clamp (3) includes an arc-shaped clamping part (32) coaxially and symmetrically arranged with the rotary table (2). One side of the arc-shaped clamping part (32) is fixedly connected to the rotary table (2), and the bottom of the other side of the arc-shaped clamping part (32) is provided with a flange (31). The flange (31) is connected to the rotary table (2) by bolts. Several ribs (33) are provided on the outside of the arc-shaped clamping part (32). The mixing tank (5) is fixed on the rotary table (2) through the arc-shaped clamping part (32).

5. The high-temperature alkaline solution cooling device for cubic boron nitride micropowder according to claim 1, characterized in that, The stirring device (6) includes a stirring shaft and a stirring paddle. The stirring shaft is a sleeve-type telescopic structure, including a first stirring shaft (62) and a second stirring shaft (63). The first stirring shaft (62) is sleeved on the outside of the second stirring shaft (63). A threaded through hole is provided on the first stirring shaft (62), and an adjustment knob (61) is connected to it in the threaded through hole.

6. The high-temperature alkaline solution cooling device for cubic boron nitride micropowder according to claim 5, characterized in that, The water supply mechanism (7) includes a water tank (71), which is fixed on a bracket (8). The lower end of the water tank (71) is connected to a water flow regulating device (72). A water pipe (73) is provided at the outlet of the water flow regulating device (72). The water pipe (73) is connected to the second stirring shaft (63). The water level probe of the water flow regulating device (72) is detachably fixed on the stirring shaft of the stirring device (6).

7. The high-temperature alkaline solution cooling device for cubic boron nitride micropowder according to claim 6, characterized in that, The second stirring shaft (63) of the stirring device (6) is a hollow structure, and the water pipe (73) is connected to the hollow structure. The part of the second stirring shaft (63) submerged in the alkali solution is evenly provided with a number of water outlets (66).

8. The high-temperature alkaline solution cooling device for cubic boron nitride micropowder according to claim 5, characterized in that, The agitator is a cross-shaped agitator (64) or a spiral agitator (65) with a spiral structure.

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