A stirring shaft and a vertical coating kettle thereof

Abstract

The utility model relates to a kind of stirring shaft and its vertical cladding kettle in cladding kettle technical field, including shaft and several pieces of sheet stirring vane, several pieces of sheet stirring vane are fan-shaped structure and with horizontal structure is set in the side wall of shaft, several pieces of sheet stirring vane are linear helical structure in sequence and are arranged and set in the side wall of shaft in sequence, it is again interlaced structure in perpendicular direction between adjacent two stirring vane, stirring shaft is inserted in the inside of inner bag, and the top of inner bag is equipped with support plate and driving mechanism, stirring shaft is rotatably set in the inside of inner bag by driving mechanism, powder is evenly stirred in cladding inner bag, on the other hand, powder can be extruded under the action of self-weight, improve the fusion between powder and binder, so that powder can be repeatedly bonded, agglomerate becomes large, and the quality of equipment granulation is improved.

Description

Technical Field

[0001] This utility model relates to the field of coating reactor technology, and in particular to a stirring shaft and its vertical coating reactor. Background Technology

[0002] The coating tank in continuous granulation equipment is a commonly used industrial device, mainly used to form granules from powdered or granular raw materials through physical or chemical processes. Its working principle involves gradually heating the raw materials and mixing them with additives using mechanical and thermal forces to form a mixture with a certain moisture content. Then, the mixture is continuously propelled into the granulation chamber by rotation or vibration, undergoing processes such as compression, shaping, and solidification to ultimately form the desired granules.

[0003] The existing continuous granulation production method involves loading powder into a coating vessel, adding it to the surface of the vessel to make the powder boil (fluidize), then adding a mist binder. Under the protection of a nitrogen atmosphere, the powder mixed with additives is heated and stirred. During the boiling process, the surface tension of the liquid material increases, and the particles agglomerate and stick together to form the particles required by the process. Hot air is then introduced to dry the material, which is then transported to the granulation and drying reactor for further processing.

[0004] However, existing coating reactors are all horizontally positioned, similar to cooling reactors, and the powder requires prolonged stirring inside the reactor to achieve proper mixing and agglomeration. Therefore, there is an urgent need to develop a vertical rotary continuous granulation equipment to meet practical application requirements. Utility Model Content

[0005] The purpose of this invention is to provide a stirring shaft and its vertical coating vessel to solve the above-mentioned defects.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A stirring shaft includes a shaft and several stirring blades. The stirring blades are fan-shaped and horizontally arranged on the side wall of the shaft. The stirring blades are arranged in a linear spiral pattern on the side wall of the shaft, and adjacent stirring blades are staggered in the vertical direction.

[0008] In the above description, as a further embodiment, the outer edge of the stirring blade is a vertically arranged scraper, the scraper and the stirring blade are perpendicular to each other, the scraper is an arc-shaped structure, and the outer edge of the stirring blades on the same side is provided with connecting ribs.

[0009] A vertical coating vessel includes an outer shell, an inner liner, and the aforementioned stirring shaft. The outer shell has an open structure at both the top and bottom. The inner liner is disposed inside the outer shell, and both ends of the inner liner pass through the top and bottom of the outer shell, respectively. The inner liner has a cylindrical hollow structure. The stirring shaft is inserted into the inner liner. The top of the inner liner is provided with a support plate and a drive mechanism. The stirring shaft is rotatably disposed inside the inner liner through the drive mechanism.

[0010] As a further embodiment of the above description, the support plate is provided with a mounting flange in the middle, and the top end of the stirring shaft is rotatably mounted inside the mounting flange via a bearing. A feeding pipe is provided on one side of the support plate, and one end of the feeding pipe can extend to the top of the inner liner for conductive connection.

[0011] As a further embodiment of the above description, the drive mechanism includes a motor and a reducer. The output shaft of the motor is keyed to the reducer. The top surface of the reducer is provided with a rotatable drive gear. The reducer is keyed to the drive gear. The top of the stirring shaft is provided with a driven gear. The stirring shaft is keyed to the driven gear. The drive gear and the driven gear mesh and transmit power.

[0012] As a further embodiment, the bottom of the inner liner is provided with a conical section, and the bottom of the stirring shaft is provided with scrapers that extend obliquely to both sides. The scrapers, scraper blades, and connecting ribs abut against the conical section and the side wall of the inner liner, respectively.

[0013] As a further embodiment of the above description, a heat insulation layer is provided between the outer shell and the inner liner for filling. The side of the heat insulation layer near the inner liner has an outwardly recessed heat source cavity, and the heating element is located inside the heat source cavity to heat the inner liner.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: by adopting a vertical structure for the coating vessel, and with the stirring blades of the stirring shaft arranged in a horizontal and linear spiral pattern on the side wall of the shaft, the powder can form multiple cyclic stirring zones on the horizontal stirring blades when the stirring shaft rotates inside the coating vessel. The powder can also accumulate in the vertical coating liner. Under its own weight, the powder falls evenly inside the coating liner. This ensures that the powder is evenly distributed and stirred within the coating liner, and also allows the powder to be compressed against each other under its own weight, improving the fusion between the powder and the binder. This allows the powder to be repeatedly bonded, agglomerated, and enlarged, thus improving the granulation quality of the equipment. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a stirring shaft as described in this embodiment;

[0016] Figure 2This is a front view schematic diagram of a vertical coating reactor as described in this embodiment;

[0017] Figure 3 This is a cross-sectional view of a vertical coating reactor as described in this embodiment;

[0018] Figure 4 This is a schematic diagram of the internal structure of a vertical coating reactor as described in this embodiment;

[0019] Figure 5 for Figure 4 A magnified schematic diagram of the structure of part A in the diagram;

[0020] In the diagram: 1-outer shell, 2-inner liner, 3-stirring shaft, 31-shaft rod, 32-stirring blade, 33-scraper, 34-connecting rib, 35-scraper, 4-conical section, 5-drive mechanism, 51-motor, 52-reducer, 53-drive gear, 54-driven gear, 6-support plate, 61-mounting flange, 62-feeding pipe, 7-insulation layer, 71-heat source cavity. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] For this embodiment, please refer to Figures 1-5 The specific implementation of the stirring shaft 3 includes a shaft 31 and several stirring blades 32. The stirring blades 32 are fan-shaped and horizontally arranged on the side wall of the shaft 31. The stirring blades 32 are arranged in a linear spiral structure on the side wall of the shaft 31. Adjacent stirring blades 32 are interleaved in the vertical direction.

[0023] In the above description, as a further solution, the outer edge of the stirring blade 32 is a vertically arranged scraper 33, and the scraper 33 and the stirring blade 32 are in a vertically perpendicular structure. The scraper 33 is an arc-shaped structure, and the outer edge of the stirring blades 32 on the same side is provided with connecting ribs 34. When the stirring shaft 3 rotates, the powder can form multiple cyclically stirred zones on the horizontally structured stirring blade 32, so that the powder can be repeatedly bonded and agglomerated.

[0024] A vertical coating vessel includes an outer shell 1, an inner liner 2, and the aforementioned stirring shaft 3. The outer shell 1 has an open structure at both the top and bottom. The inner liner 2 is disposed inside the outer shell 1, and both ends of the inner liner 2 penetrate through the top and bottom of the outer shell 1, respectively. The inner liner 2 has a cylindrical hollow structure. The stirring shaft 3 is inserted into the inner liner 2. The top of the inner liner 2 is provided with a support plate 6 and a drive mechanism 5. The stirring shaft 3 is rotatably disposed inside the inner liner 2 through the drive mechanism 5.

[0025] A heat insulation layer 7 is provided between the outer shell 1 and the inner liner 2 for filling. The side of the heat insulation layer 7 near the inner liner 2 has an outwardly recessed heat source cavity 71. The heating element is located inside the heat source cavity 71 to heat the inner liner 2.

[0026] A heating element (not shown) is positioned inside the heat source cavity 71 to heat the inner liner 2. The insulation layer 7 is composed of a cotton layer made of aluminosilicate fiber, and the heating element is composed of resistance bands. Aluminosilicate fiber is a new type of lightweight and energy-saving refractory material. It is a cotton-like inorganic fiber made from fused alumina as the main raw material, melted at a high temperature of 2100℃, and processed by high-speed centrifugation or blowing methods. Aluminosilicate fiber has advantages such as high temperature resistance, good thermal stability, low thermal conductivity, small heat capacity, good resistance to mechanical vibration, small thermal expansion, and good thermal insulation performance. When mixed with a cotton layer for weaving or knitting, it can be made into insulation layers 7 such as aluminosilicate fiber boards, aluminosilicate fiber felts, aluminosilicate fiber ropes, and aluminosilicate fiber blankets, effectively retaining the heat from the heating element on the surface of the inner liner 2, allowing the inner liner 2 to continuously receive heat for heating.

[0027] The installation structure between the stirring shaft 3 and the inner liner 2 is as follows: a mounting flange 61 is provided in the middle of the support plate 6, the top end of the stirring shaft 3 is rotatably set inside the mounting flange 61 through a bearing, a feeding pipe 62 is provided on one side of the support plate 6, one end of the feeding pipe 62 can extend to the top end of the inner liner 2 for conductive connection, the drive mechanism 5 includes a motor 51 and a reducer 52, the output shaft of the motor 51 is connected to the reducer 52, the top surface of the reducer 52 is provided with a rotatable drive gear 53, the top end of the stirring shaft 3 is provided with a driven gear 54, and the drive gear 53 and the driven gear 54 mesh and transmit power.

[0028] In the above description, as a further embodiment, the bottom of the inner liner 2 is provided with a conical section 4, and the bottom of the stirring shaft 3 is provided with scrapers 35 extending obliquely to both sides. The scrapers 35, scraper blades 33, and connecting ribs 34 respectively abut against the side walls of the conical section 4 and the inner liner 2. The scrapers 35, scraper blades 33, and connecting ribs 34 can scrape off the material adhering to the inner walls of the inner liner 2 and the inner walls of the conical section 4. At the same time, the scraper blades 33 and the stirring blades 32 are perpendicular to each other, so the powder can continuously roll against the inner wall of the inner liner 2 under the action of centrifugal force. Dynamic agglomeration improves the compatibility between powder and binder, allowing the powder to be repeatedly bonded and agglomerated to increase in size, thus improving the granulation quality of the equipment. At the same time, the coating vessel is set in a vertical structure on one side of the reactor, and a screw conveyor is set at the top and bottom of the coating vessel. The screw conveyor transports the powder and the agglomerated semi-finished material. During the powder mixing process, the powder can accumulate in the vertical coating inner liner 2. Under its own weight, the powder falls evenly into the interior of the coating inner liner 2.

[0029] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A stirring shaft, comprising a shaft and a plurality of stirring blades, characterized in that: The plurality of stirring blades are fan-shaped and horizontally arranged on the side wall of the shaft. The plurality of stirring blades are arranged in a linear spiral pattern on the side wall of the shaft, and adjacent stirring blades are staggered in the vertical direction.

2. The stirring shaft according to claim 1, characterized in that: The outer edge of the stirring blade is a vertically arranged scraper, and the scraper and the stirring blade are perpendicular to each other. The scraper is an arc structure, and the outer edge of the stirring blades on the same side is provided with connecting ribs.

3. A vertical coating reactor, characterized in that: The device includes an outer shell, an inner liner, and a stirring shaft as described in any one of claims 1-2. The outer shell has an open structure at both the top and bottom. The inner liner is disposed inside the outer shell, and both ends of the inner liner pass through the top and bottom of the outer shell, respectively. The inner liner has a cylindrical hollow structure. The stirring shaft is inserted into the inner liner. The top of the inner liner is provided with a support plate and a drive mechanism. The stirring shaft is rotatably disposed inside the inner liner through the drive mechanism.

4. A vertical coating reactor according to claim 3, characterized in that: The support plate has a mounting flange in the middle, and the top end of the stirring shaft is rotatably mounted inside the mounting flange via a bearing. A feeding pipe is provided on one side of the support plate, and one end of the feeding pipe can extend to the top of the inner liner for conductive connection.

5. A vertical coating reactor according to claim 4, characterized in that: The drive mechanism includes a motor and a reducer. The output shaft of the motor is keyed to the reducer. The top surface of the reducer is provided with a rotatable drive gear. The reducer is keyed to the drive gear. The top of the stirring shaft is provided with a driven gear. The stirring shaft is keyed to the driven gear. The drive gear and the driven gear mesh and transmit power.

6. A vertical coating reactor according to claim 3, characterized in that: The bottom of the inner liner is provided with a conical section, and the bottom of the stirring shaft is provided with scrapers that extend obliquely to both sides. The scrapers, scraper blades and connecting ribs abut against the side walls of the conical section and the inner liner, respectively.

7. A vertical coating reactor according to claim 3, characterized in that: A heat insulation layer is provided between the outer shell and the inner liner for filling. The side of the heat insulation layer near the inner liner has an outwardly recessed heat source cavity. The heating element is located inside the heat source cavity to heat the inner liner.

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