Efficient powder fluidization stirring device

Abstract

The utility model discloses an efficient powder fluidization stirring device which comprises a reactor shell, a stirring shaft is arranged in the reactor shell in a penetrating mode, the bottom of the reactor shell is connected with a flange, the side face of the flange is provided with an air inlet, the top of the flange is provided with a plurality of air inlet caps, and the air inlet is communicated with the air inlet caps through air inlet grooves. A plurality of inclined through holes which are uniformly distributed are formed in the gas inlet cap, the inclined through holes are communicated with holes in the gas inlet cap, and gas enters the reactor shell through the inclined through holes; the bottom of the flange is connected with a cooling water jacket; and the stirring shaft sequentially penetrates through the reactor shell, the flange and the cooling water jacket. The efficient powder fluidization stirring device provided by the utility model can ensure that particles with the particle size of less than 50 microns can be fully and uniformly mixed in the stirring device during production, and structural components of the stirring device can be adjusted, replaced and maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of powder stirring, in particular to a high-efficiency powder fluidization stirring device. Background Art

[0002] The stirring device is a common equipment with a wide range of applications. In the chemical industry, materials often need to be stirred and mixed. With the progress of industrial manufacturing, stirring equipment needs to have more and more functions. At present, stirring devices are often used in working conditions between liquids and liquids. It is difficult to mix and fluidize powders. When the particle size of solid particles is less than 50 microns, accumulation is prone to occur. Slow-speed stirring makes it difficult to stir and mix the powders evenly, which leads to poor product purity and quality and low production efficiency. The cost of high-speed stirring is high, and when the powder is stirred at high speed, the particles will rub against the stirring shaft all the time, which greatly shortens the service life of the stirring device and is not conducive to mass production. These problems have greatly hindered the application and development of powder fluidization technology.

[0003] The powder stirring device commonly used in the manufacturing industry has a relatively simple structure. Such a stirring structure design cannot ensure the uniformity of powder stirring with a particle size less than 50 microns. In addition, there are problems such as difficulty in mixing materials, easy-to-accumulate powders that will rub against the stirring shaft, limited amount of powder that can be processed by a single device, and difficulty in equipment maintenance and repair. Utility Model Content

[0004] In view of the above-mentioned deficiencies of current powder stirring devices, the utility model provides an efficient powder fluidization stirring device, which can ensure that particles with a particle size less than 50 microns can be fully mixed evenly inside the stirring device during production, and the structural components of the stirring device can be adjusted, replaced and maintained.

[0005] In order to achieve the above object, the embodiment of the utility model adopts the following technical solution:

[0006] A high-efficiency powder fluidization stirring device comprises a reactor shell, a stirring shaft is inserted into the reactor shell, a flange is connected to the bottom of the reactor shell, an air inlet is provided on the side of the flange, and a plurality of air inlet caps are provided on the top, the air inlet and the air inlet caps are connected through an air inlet groove, a plurality of evenly distributed oblique through holes are provided on the air inlet cap, the oblique through holes are connected to the holes in the air inlet cap, and the gas enters the reactor shell through the oblique through holes; a cooling water jacket is connected to the bottom of the flange, and the stirring shaft passes through the reactor shell, the flange and the cooling water jacket in sequence.

[0007] According to one aspect of the utility model, a thread is provided at the bottom of the air inlet cap, a sealing plate is provided between the flange and the reactor shell, and the sealing plate is threadedly connected to the air inlet cap.

[0008] According to one aspect of the utility model, the sealing plate is fixedly connected to the flange by bolts.

[0009] According to one aspect of the utility model, the inclination angle between the inclined through hole and the hole in the air inlet cap is 30° to 60°.

[0010] According to one aspect of the utility model, a gasket seal and a labyrinth seal are provided between the flange and the cooling water jacket.

[0011] According to one aspect of the utility model, a packing is provided between the labyrinth seal and the stirring shaft for sealing.

[0012] According to one aspect of the utility model, an annular stopper is provided at the contact point between the stirring shaft and the flange, and the annular stopper is sealed and connected to the flange.

[0013] According to one aspect of the utility model, the stirring shaft is provided with a stirring blade, and the stirring blade is provided with a plurality of through grooves.

[0014] The advantages of the implementation of the utility model are as follows: the stirring shaft cooperates with the air inlet and air inlet cap on the flange, which can effectively reduce the dead zone of material accumulation generated inside the reactor, and allow the powder to be fully mixed after being suspended, thereby ensuring the quality and stability of the product performance. At the same time, different powders can be mixed by adjusting different gas velocities and stirring speeds, making it easier to achieve fluidization of the powder. The stirring blades, annular block, and air inlet cap are all threaded connection structures, which can be disassembled for maintenance and replacement, and have a wider adaptability. The packing seal and sealing gasket can be disassembled and replaced, effectively reducing the cost of rework and manufacturing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 This is a schematic structural diagram of the powder fluidizing and stirring device of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the air inlet cap described in the utility model;

[0018] Figure 3 This is a top view of the flange described in the utility model.

[0019] In the figure: 1, air inlet; 2, flange; 3, reactor shell; 4, stirring blade; 5, annular stopper; 6, air inlet cap; 7, labyrinth seal; 8, cooling water jacket; 9, stirring shaft; 10, gasket seal; 11, cooling water inlet; 12, cooling water outlet; 13, inflation inlet; 14, deflation outlet; 15, through groove; 16, oblique through hole. DETAILED DESCRIPTION

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1 , Figure 2 , Figure 3 As shown, a high-efficiency powder fluidizing stirring device includes a reactor shell 3, wherein a stirring shaft 9 is inserted into the reactor shell 3, a flange 2 is connected to the bottom of the reactor shell 3, a cooling water jacket 8 is connected to the bottom of the flange 2, and the stirring shaft 9 passes through the reactor shell 3, the flange 2 and the cooling water jacket 8 in sequence.

[0024] An air inlet 1 is provided on the side of the flange 2, and a plurality of air inlet caps 6 are provided on the top of the flange 2 (the holes on the flange 2 that are not used with the air inlet caps 6 can be blocked with bolts of the same specification), the air inlet 1 and the air inlet cap 6 are connected via an air inlet groove, and the air inlet cap 6 is provided with a plurality of evenly distributed downwardly inclined oblique through holes 16, which are connected with the holes in the air inlet cap 6, and the inclination angle of the oblique through holes 16 and the holes in the air inlet cap 6 is 30° to 60°, so that the gas can evenly enter the reactor shell 3 from all directions through the oblique through holes 16 to blow away the powder; in this embodiment, the inclination angle of the oblique through holes 16 is 60°, and the number of the air inlet caps 6 can be changed according to the weight of the actual produced powder to achieve the purpose of adjusting the gas speed and gas volume.

[0025] By setting an oblique through hole 16 on the air inlet cap 6, the device can blow up some fine particles deposited at the bottom of the reactor shell 3 during the air intake process, effectively reducing the dead zone area of ​​powder accumulation, and the angle setting of the air hole can prevent powder from entering and blocking the air inlet 1, avoiding the occurrence of substandard gas velocity and gas volume.

[0026] The bottom of the air inlet cap 6 is provided with threads, and the upper end surface of the air inlet cap 6 is processed into two planes for conveniently tightening with a wrench when installing the air inlet cap 6. A sealing plate is also provided between the flange 2 and the reactor shell 3, and the sealing plate is threadedly connected to the air inlet cap 6. The sealing plate is fixedly connected to the flange 2 by bolts.

[0027] A gasket seal 10 and a labyrinth seal 7 are provided between the flange 2 and the cooling water jacket 8, and a packing is also provided between the labyrinth seal 7 and the stirring shaft 9 for sealing. The gasket seal 10, the labyrinth seal 7 and the packing seal play a sealing role in the entire production process to prevent gas leakage. The cooling water jacket 8 includes a cooling water jacket 8 cavity, and a cooling water inlet 11 and a cooling water outlet 12 are provided on the cooling water jacket 8 for pouring cooling water into the cooling water jacket 8 cavity. A sealed gap space is also left between the cooling water jacket 8 and the stirring shaft 9. An air filling inlet 13 and an air release outlet 14 are provided on the cooling water jacket 8, and the gas filled can be nitrogen. The cooling water jacket 8 and nitrogen cooling can ensure the long-term high-speed operation of the stirring shaft 9.

[0028] An annular stopper 5 is provided at the contact point between the stirring shaft 9 and the flange 2. The annular stopper 5 and the flange 2 are sealed to protect the stirring shaft 9 during the material reaction and prevent powder from entering the gap between the stirring shaft 9 and the flange 2.

[0029] A stirring blade 4 is provided on the stirring shaft 9, and a plurality of through grooves 15 are provided on the stirring blade 4. The through grooves 15 processed on the stirring blade 4 are through grooves 15 of different shapes, which can reduce the resistance when the stirring starts to rotate (the shape, size, and number of the through grooves 15 can be adjusted according to the different particle sizes of the fluidized material, product characteristics, and other actual conditions), prevent the motor from overloading, and the through grooves 15 on the stirring blade 4 can better break up the accumulated powder during the rotation process, so that the powder is suspended inside the reactor, so that the material reacts fully, and the quality of the product is guaranteed.

[0030] During use of the device, after the raw material powder is added into the reactor shell 3, the gas enters the flange 2 from the air inlet 1, and the gas is then distributed to the upper air inlet cap 6 through the air inlet groove. The air inlet cap 6 is threadedly connected to the sealing plate on the flange 2, and the air inlet cap 6 is provided with a plurality of evenly distributed downwardly inclined through holes 16, so that the gas can enter the reactor shell 3 from all directions. After the powder is dispersed inside the reactor, the stirring shaft 9 is turned on, and the stirring blades 4 start to rotate, so that the materials are mixed more evenly. During the reaction of the materials, the annular block 5 can protect the stirring shaft 9 and prevent the powder from entering the gap between the stirring shaft 9 and the flange 2. The labyrinth seal 7, the gasket seal 10, the packing seal and the cooling water jacket 8 play a role of sealing and cooling in the whole production process.

[0031] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. An efficient powder fluidization stirring device, comprising a reactor shell (3), wherein a stirring shaft (9) is inserted into the reactor shell (3), characterized in that: The bottom of the reactor shell (3) is connected to a flange (2), the side of the flange (2) is provided with an air inlet (1), and the top is provided with a plurality of air inlet caps (6), the air inlet (1) and the air inlet cap (6) are connected via an air inlet groove, the air inlet cap (6) is provided with a plurality of evenly distributed oblique through holes (16), the oblique through holes (16) are connected to the holes in the air inlet cap (6), and the gas enters the reactor shell (3) through the oblique through holes (16); the bottom of the flange (2) is connected to a cooling water jacket (8), and the stirring shaft (9) passes through the reactor shell (3), the flange (2) and the cooling water jacket (8) in sequence.

2. The powder fluidizing stirring device according to claim 1, characterized in that: The bottom of the air inlet cap (6) is provided with a thread, a sealing plate is provided between the flange (2) and the reactor shell (3), and the sealing plate is threadedly connected to the air inlet cap (6).

3. The powder fluidizing stirring device according to claim 2, characterized in that: The sealing plate is fixedly connected to the flange (2) by means of bolts.

4. The powder fluidizing stirring device according to claim 1, characterized in that: The inclination angle between the inclined through hole (16) and the hole in the air inlet cap (6) is 30° to 60°.

5. The powder fluidizing stirring device according to claim 1, characterized in that: A gasket seal (10) and a labyrinth seal (7) are provided between the flange (2) and the cooling water jacket (8).

6. The powder fluidizing stirring device according to claim 5, characterized in that: A packing is also provided between the labyrinth seal (7) and the stirring shaft (9) for sealing.

7. The powder fluidizing and stirring device according to claim 1, characterized in that: An annular stopper (5) is provided at the contact point between the stirring shaft (9) and the flange (2), and the annular stopper (5) and the flange (2) are sealed and connected.

8. The powder fluidizing stirring device according to claim 1, characterized in that: The stirring shaft (9) is provided with a stirring blade (4), and the stirring blade (4) is provided with a plurality of through grooves (15).

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