CN213680880U

CN213680880U - Production device for continuous powder coating

Info

Publication number: CN213680880U
Application number: CN202022735687.7U
Authority: CN
Inventors: 解明
Original assignee: Jianghan University
Current assignee: Jianghan University
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-07-13
Anticipated expiration: 2030-11-23

Abstract

The utility model relates to a production device of continuous powder coating film, including preheating part, cladding portion and the cooling portion of pipe connection in proper order, preheating part, cladding portion and cooling portion all include a jar body, set up the fluidization gas intake pipe of jar body bottom sets up jar internal portion just is close to the board is flowed to the flow equalizer of fluidization gas intake pipe, sets up jar internal portion just is close to the thermodetector of the top side of the board is flowed to the flow equalizer. The utility model provides a production device of continuous powder coating film, preheating part, cladding part and the respective jar body of cooling part are equivalent to the cavity of three difference, and preheating process, cladding process and the cooling process of powder separately go on, do not accomplish in a reaction chamber, make like this to carry out the next step of process and need not wait for one step of process to accomplish, and each process engineering can go on alone, has practiced thrift the time, has reduced manufacturing cost.

Description

Production device for continuous powder coating

Technical Field

The utility model relates to a powder coating equipment technical field especially relates to a apparatus for producing of continuous powder coating film.

Background

Atomic layer deposition ALD is a thin film deposition technique based on surface control. In the coating process, two or more chemical vapor precursors are sequentially subjected to chemical reaction on the surface of the substrate to generate a solid film. Most atomic layer deposition systems employ a cross-flow reaction chamber through which a fluidizing gas (inert carrier gas) passes; the precursor is injected into this inert carrier gas by very short pulses. The inert carrier gas carries the precursor pulse as an ordered 'wave' which sequentially passes through the reaction chamber, the vacuum pump pipeline, the filtering system and finally the vacuum pump.

With the increasingly intensive research in the field of materials, ultrafine powder becomes the focus of research due to its unique physical and chemical properties. However, as the size of the powder is reduced, the specific surface area and the surface energy are increased, and spontaneous coagulation and agglomeration phenomena are easily generated, so that the superfine powder material cannot exert the excellent performance. In the aspect of material modification, when a coating is required on the powder surface, namely a layer of other material is coated on the powder surface and the film thickness is accurately controlled, an atomic layer deposition method is required, the ALD process has a self-limiting natural uniform film thickness control characteristic, because the periodic production characteristic of ALD is that different precursors are sequentially introduced, and cleaning is required to be added between the precursors, namely the precursor A is introduced, then cleaning is carried out, the precursor B is introduced, and then cleaning is carried out, the process is called a "circle period" of coating, and the number of the circle period is determined by the film thickness requirement; the existing powder coating production equipment comprises a powder preheating process, a coating process and a cooling process in a production process, and the three processes are completed in a reaction cavity.

However, in the existing powder coating production equipment, the preheating process, the coating process and the cooling process of the powder are completed in one reaction cavity, so that the next process needs to wait for the completion of the previous process, each process cannot be performed independently, a large amount of time is wasted in the waiting process, and the production cost is increased.

Based on the above situation, there is a need for a continuous powder coating production apparatus to solve the above problems.

SUMMERY OF THE UTILITY MODEL

To the situation of prior art, in order to overcome above defect, the utility model provides a continuous powder coating film's apparatus for producing, think about ingenious, reasonable in design can solve above-mentioned problem.

The utility model discloses a following technical scheme realizes:

the utility model provides a production device for continuous powder coating, which comprises a preheating part, a coating part and a cooling part which are sequentially connected by pipelines, the preheating part, the coating part and the cooling part all comprise a tank body, a fluidized gas inlet pipe arranged at the bottom of the tank body, a flow equalizing plate arranged in the tank body and close to the fluidized gas inlet pipe, a temperature detector arranged in the tank body and close to the side surface above the flow equalizing plate, a stirring device and a gas pressure detection device arranged in the tank body, a fluidized gas exhaust pipe arranged at the top of the tank body, a filtering device arranged at the inlet of the fluidized gas exhaust pipe, and a material conveying inlet pipe arranged at the side surface of the tank body, the material conveying inlet pipe and the material conveying outlet pipe are respectively provided with a vacuum valve; the preheating part also comprises a heating device arranged on the outer side surface of the tank body of the preheating part, the coating part also comprises a heating device arranged on the outer side surface of the tank body of the coating part, a gas analyzer arranged in the fluidized gas exhaust pipe of the coating part, and a reaction gas inlet pipe arranged on the fluidized gas inlet pipe of the coating part; the flow equalizing plate is used for uniformly dispersing fluidizing gas and blocking powder, the air pressure detecting device is used for monitoring the air pressure value in the tank body in real time, and the filtering device is used for preventing the powder from flowing out of the tank body along the fluidizing gas.

Furthermore, the preheating part is provided with two at least, the cladding part is provided with one, the cooling part is provided with one at least, every the defeated material outlet pipe of preheating part through first lead to the connecting piece with the defeated material inlet pipe of cladding part is linked together, every the defeated material inlet pipe of cooling part through the second lead to the connecting piece with the defeated material outlet pipe of cladding part is linked together.

Furthermore, preheating part is provided with two at least, cladding part is provided with two at least, cooling portion is provided with one at least, each the cladding part is the intercommunication of establishing ties in proper order, every the defeated material outlet pipe of preheating part lead to the connecting piece through the third with be in the initial position the cladding part the defeated material advances the pipe and is linked together, every the defeated material inlet pipe of cooling part lead to the connecting piece through the fourth with being in terminal position the defeated material outlet pipe of cladding part is linked together.

Furthermore, the lower part of the tank body is provided with a round platform structure with a large upper part and a small lower part.

Further, the flow equalizing plate is made of a heat-resistant material.

Furthermore, the material conveying pipe is connected to the tank body horizontally or in a direction which forms an upward acute angle with the vertical direction.

Further, the vacuum valve is a butterfly valve or a gate valve.

The utility model also provides a production method of continuous powder coating film adopts above-mentioned production device of continuous powder coating film, including following step:

step 1: powder and fluidizing gas are introduced into the preheating part, the fluidized powder is heated when the air pressure reaches an expected value, and the fluidized powder is preheated when the temperature reaches a set temperature value;

step 2: introducing all the fluidized powder preheated in the step 1 into the coating part, continuously introducing fluidizing gas into the coating part, heating the fluidized powder to keep the temperature of the fluidized powder within a preset temperature value, introducing a first reaction gas, stopping introducing the first reaction gas and keeping the continuous introduction of the fluidizing gas after the first reaction gas is detected, cleaning the first reaction gas in the coating part by using the fluidizing gas until the first reaction gas is cleaned, introducing a second reaction gas, stopping introducing the second reaction gas and keeping the introduction of the fluidizing gas after the second reaction gas is detected, cleaning the second reaction gas in the coating part by using the fluidizing gas until the second reaction gas and reaction byproducts are cleaned, namely finishing a layer of coating in the surface second of the powder;

and step 3: and (3) introducing the fluidized powder subjected to film coating in the step (2) into the cooling part, continuously introducing the fluidized gas into the cooling part, and outputting the fluidized powder subjected to film coating when the temperature is reduced to a set temperature value.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

the utility model provides a production device for continuous powder coating, including preheating part, cladding portion and cooling portion, preheating part, cladding portion and cooling portion all include the jar body, the respective jar body of preheating part, cladding portion and cooling portion is equivalent to three different cavitys, and the preheating process, cladding process and the cooling process of powder separately go on, do not accomplish in a reaction chamber, make like this to carry out next step process and need not wait for the process of the last step to accomplish, and each process engineering can go on alone, has practiced thrift the time, has reduced manufacturing cost; the utility model discloses a production device of continuous powder coating film, through preheating part to the cladding part constantly carries the preheating powder after the fluidization, can realize continuous coating film, has reduced the time of powder coating film technology, has improved the production efficiency of powder coating film.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of a continuous powder coating production apparatus provided by the present invention;

FIG. 2 is a schematic structural diagram of an embodiment of the continuous powder coating production apparatus provided by the present invention;

fig. 3 is a schematic structural diagram of an embodiment of the continuous powder coating production apparatus provided by the present invention.

Reference numerals: 1. a tank body; 2. a fluidizing gas inlet pipe; 3. a flow equalizing plate; 4. a temperature detector; 5. a stirring device; 6. a fluidizing gas exhaust pipe; 7. a filtration device; 8. feeding the material into the pipe; 9. A delivery outlet pipe; 10. a heating device; 11. a gas analyzer; 12. a reaction gas inlet pipe; 600. A preheating section; 800. a covering part; 900. a cooling part.

Detailed Description

The following detailed description of the preferred embodiments of the invention, which is to be read in connection with the accompanying drawings, forms a part of this application, and together with the embodiments of the invention, serve to explain the principles of the invention and not to limit its scope.

As shown in fig. 1 to 3, a continuous powder coating production device comprises a preheating part 600, a coating part 800 and a cooling part 900 which are sequentially connected by pipelines, wherein each of the preheating part 600, the coating part 800 and the cooling part 900 comprises a tank body 1, a fluidizing gas inlet pipe 2 arranged at the bottom of the tank body 1, a flow equalizing plate 3 arranged inside the tank body 1 and close to the fluidizing gas inlet pipe 2, a temperature detector 4 arranged inside the tank body 1 and close to the upper side surface of the flow equalizing plate 3, a stirring device 5 and an air pressure detection device arranged inside the tank body 1, a fluidizing gas exhaust pipe 6 arranged at the top of the tank body, a filtering device 7 arranged at an inlet 6 of the fluidizing gas exhaust pipe, a material feeding pipe 8 arranged at the side surface of the tank body 1, and a material feeding pipe 9 arranged at the side surface of the tank body 1 and close to the upper side surface of the flow equalizing plate 3, vacuum valves are arranged on the material conveying inlet pipe 8 and the material conveying outlet pipe 9; the preheating part 600 further comprises a heating device 10 arranged on the outer side surface of the tank body 1 of the preheating part 600, the coating part 800 further comprises a heating device 10 arranged on the outer side surface of the tank body 1 of the coating part 800, a gas analyzer 11 arranged inside the fluidized gas exhaust pipe 6 of the coating part 800, and a reaction gas inlet pipe 12 arranged on the fluidized gas inlet pipe 2 of the coating part 800; the flow equalizing plate 3 is used for uniformly dispersing fluidizing gas and blocking powder, the air pressure detection device is used for monitoring the air pressure value in the tank body 1 in real time, and the filtering device 7 is used for preventing the powder from flowing out of the tank body 1 along the fluidizing gas.

The utility model provides a production device of continuous powder coating film, including preheating part 600, cladding part 800 and cooling part 900, preheating part 600, cladding part 800 and cooling part 900 all include jar body 1, preheating part 600, cladding part 800 and the respective jar body 1 of cooling part 900 are equivalent to the cavity of three difference, and preheating process, cladding process and the cooling process of powder separately go on, do not accomplish in a reaction chamber, make on next step the course of technology need not wait for one step of course to accomplish like this, and each course of technology can go on alone, has practiced thrift the time, has reduced manufacturing cost.

The fluidizing gas inlet pipe 2 is positioned at the lower part of the flow equalizing plate 3 and is used for introducing fluidizing gas into the preheating cavity, so that gas flow flows from bottom to top through the flow equalizing plate 3 to drive powder to fluidize; for better temperature homogeneity, the fluidizing gas introduced may be preheated; the stirring device 5 is used for stirring to make the temperature of the heated powder more uniform and convenient for fluidization, and the paddle can be of a simple rod-shaped structure, a fan-blade-shaped structure and the like; the exhaust pipe is positioned at the top of the preheating cavity and is used for exhausting the fluidizing gas of the preheating cavity, and the airflow inlet of the exhaust pipe is provided with a filtering device 7 for preventing the powder from flowing out of the preheating cavity along the airflow; the delivery pipe 9 can be a simple port pipe horizontally tangent to the top surface of the flow equalizing plate 3 at the bottom of the cavity, or an insertable long pipe with up-down telescopic function, and has the function of downwards sliding to be inserted into the powder material to fully suck the powder and transfer the powder material into the rear-section cavity when needed. When the powder is not required to be transferred, the insertable long pipe is in a retracted state, so that the fluidization characteristic of the powder at the lower part is prevented from being influenced; the air pressure monitoring device is used for monitoring the air pressure value inside the tank body 1 in real time, and determining whether the fluidizing gas (the fluidizing gas can be dry inert gas) needs to be fed from the fluidizing gas inlet pipe 2 and the amount of the fed air according to the needs; the preheating part 600 and the coating part 800 are both provided with heating devices 10, the heating device 10 of the preheating part 600 is used for heating fluidized powder, and the heating device 10 of the coating part 800 is used for heating or maintaining the fluidized powder (this process refers to uniformly heating the fluidized powder inside the coating part 800 to a certain temperature value, so that the powder reaches the temperature required by the ALD reaction, and the powder coating process is conveniently performed).

Further, as another preferred embodiment, at least two preheating parts 600 are provided, one cladding part 800 is provided, at least one cooling part 900 is provided, each of the feeding pipes 9 of the preheating parts 600 is communicated with the feeding pipe 8 of the cladding part 800 through a first multi-way connecting member, and each of the feeding pipes 8 of the cooling parts 900 is communicated with the feeding pipe 9 of the cladding part 800 through a second multi-way connecting member.

The utility model provides a production device of continuous powder coating film, preheating part 600 is provided with two at least, cladding 800 is provided with one, cooling part 900 is provided with one at least, can pass through every preheating part 600 continuously preheats the powder, thereby makes preheating part 600 can to cladding 800 constantly carries the preheating powder after the fluidization, can realize continuous coating film, has reduced the time of powder coating film technology, has improved the production efficiency of powder coating film.

Further, as another preferred embodiment, the preheating part 600 is provided with at least two, the cladding part 800 is provided with at least two, the cooling part 900 is provided with at least one, each the cladding part 800 is connected in series in proper order and is communicated, every the conveying outlet pipe 9 of the preheating part 600 is through the third multi-way connecting piece with be in the initial position the conveying inlet pipe 8 of the cladding part 800 is linked together, every the conveying inlet pipe 8 of the cooling part 900 is through the fourth multi-way connecting piece with be in the terminal position the conveying outlet pipe 9 of the cladding part 800 is linked together.

The utility model provides a production device of continuous powder coating film, preheating part 600 is provided with two at least, cladding 800 is provided with two at least, cooling part 900 is provided with one at least, each cladding 800 establishes ties the intercommunication in proper order, can pass through every preheating part 600 continuously preheats the powder, thereby makes preheating part 600 can to cladding 800 constantly carries the preheating powder after the fluidization, and is a plurality of cladding 800 can realize continuous powder coating film after the powder coating film in proper order, has reduced the time of powder coating film technology, has improved the production efficiency of powder coating film.

Further, as another preferred embodiment, the lower portion of the can body 1 is a circular truncated cone structure with a large top and a small bottom.

The design is convenient for fluidization and turnover of the powder.

Further, as another preferred embodiment, the flow equalizing plate 3 is made of a heat-resistant material, such as: the flow equalizing plate 3 can be a porous sintered plate formed by sintering stainless steel powder, the pore diameter of the plate is selected according to the particle size of the powder to be coated, the plate can effectively intercept the powder while being as large as possible and convenient for air flow to pass through, and the powder is prevented from entering or falling through the flow equalizing plate 3.

Further, as another preferred embodiment, the feed inlet pipe 8 is connected to the tank 1 horizontally or at an upward acute angle from the vertical, and functions to suck the powder to be processed from the outside.

Further, as another preferred embodiment, the vacuum valve is a butterfly valve or a gate valve.

A production method of continuous powder coating adopts the production device of the continuous powder coating, and comprises the following steps:

step 1: powder and fluidizing gas are introduced into the preheating part 600, when the gas pressure reaches a desired value (the desired value of the gas pressure means that after the gas pressure reaches the desired value, a suitable fluidizing gas flow is found, the powder is kept in a fluidized state under the gas flow, and the desired value is generally different in different reactions), the fluidized powder is heated, and when the temperature reaches a set temperature value, the fluidized powder is preheated;

step 2: introducing all the preheated fluidized powder in the step 1 into the coating part 800, continuously introducing the fluidizing gas into the coating part 800, heating the fluidized powder to keep the temperature of the fluidized powder within a preset temperature value, introducing a first reaction gas, stopping introducing the first reaction gas and keeping the continuous introduction of the fluidizing gas after the first reaction gas is detected, cleaning the first reaction gas in the coating part 800 by using the fluidizing gas until the first reaction gas is cleaned, introducing a second reaction gas, stopping introducing the second reaction gas and keeping the continuous introduction of the fluidizing gas after the second reaction gas is detected, cleaning the second reaction gas in the coating part 800 by using the fluidizing gas until the second reaction gas and reaction byproducts are cleaned, namely finishing a layer of coating on the surface of the powder;

and step 3: and (3) introducing the fluidized powder subjected to film coating in the step (2) into the temperature reduction part 900, continuously introducing the fluidized gas into the temperature reduction part 900, and outputting the fluidized powder subjected to film coating when the temperature is reduced to a set temperature value.

Specially, adopt the utility model discloses a production device of continuous powder coating film can realize plating one deck aluminium oxide on graphite powder, and concrete operating procedure is as follows:

step 1: adding 1kg of graphite powder into the preheating part 600, starting to introduce fluidizing gas (gradually increasing the gas inflow from zero), finding a proper fluidizing gas flow rate according to a monitoring curve of a gas pressure meter when the gas pressure reaches an expected value even if the flow rate is continuously increased and the gas pressure does not change obviously any more, keeping the powder in a fluidized state under the gas flow rate, starting a heater to heat the fluidized powder, and completing the preheating of the fluidized powder when the temperature of the powder reaches a set temperature value of 180 ℃;

step 2: conveying all the fluidized graphite powder preheated in the step 1 into the coating part 800, continuously introducing fluidizing gas into the coating part 800, keeping the temperature of the heater at 180 ℃ required for coating, introducing TMA (trimethyl aluminum of TMA), stopping introducing the TMA when the exhaust port gas analyzer 11 detects the TMA until the exhaust port gas analyzer 11 cannot detect the TMA, then introducing water vapor into the reaction chamber, stopping introducing the water vapor when the exhaust port gas analyzer 11 detects that the water vapor is remarkably increased (the trimethyl aluminum reacts with the water vapor at high temperature to generate aluminum oxide), and stopping introducing the water vapor until the exhaust port gas analyzer 11 detects that the water vapor and the reaction product methane are remarkably reduced, so that the fluidized powder is coated with a layer of aluminum oxide;

and step 3: and (3) conveying the coated fluidized graphite powder in the step (2) to the cooling part 900, then introducing a cooling fluidizing gas, and outputting the coated fluidized graphite powder when the temperature is reduced to the normal temperature value.

For the processing and production with higher requirements, the fluidizing gas is usually a special ultrahigh-purity inert gas, and in order to better reduce the production cost, the high-temperature fluidizing gas discharged from the preheating section 600 and the coating section 800 can be cooled by an external cooling device and then added into the cooling section 900 again, so as to achieve the purpose of cooling by gas flow circulation. Furthermore, a cooling device can be arranged on the outer side surface of the tank body 1 of the cooling part 900 and attached to the wall of the cooling cavity, so that the cooling time is further shortened; the fluidization gas that lets in cooling portion 900 is normal atmospheric temperature or microthermal fluidization gas, through constantly filling into normal atmospheric temperature or microthermal fluidization gas for the powder after fluidization gas and the fluidization fully contacts the heat transfer, and takes away the residual heat of powder, through the fluidization gas exhaust pipe 6 of cooling portion 900 is discharged the fluidization gas after will absorbing the heat, thereby reaches rapid cooling's demand.

Unless otherwise specified, in the present invention, if the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are used for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.

Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass both fixed and removable connections, or integral connections; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.

Claims

1. A production device for continuous powder coating is characterized by comprising a preheating part, a coating part and a cooling part which are sequentially connected by pipelines, the preheating part, the coating part and the cooling part all comprise a tank body, a fluidized gas inlet pipe arranged at the bottom of the tank body, a flow equalizing plate arranged in the tank body and close to the fluidized gas inlet pipe, a temperature detector arranged in the tank body and close to the side surface above the flow equalizing plate, a stirring device and a gas pressure detection device arranged in the tank body, a fluidized gas exhaust pipe arranged at the top of the tank body, a filtering device arranged at the inlet of the fluidized gas exhaust pipe, and a material conveying inlet pipe arranged at the side surface of the tank body, the material conveying inlet pipe and the material conveying outlet pipe are respectively provided with a vacuum valve; the preheating part also comprises a heating device arranged on the outer side surface of the tank body of the preheating part, the coating part also comprises a heating device arranged on the outer side surface of the tank body of the coating part, a gas analyzer arranged in the fluidized gas exhaust pipe of the coating part, and a reaction gas inlet pipe arranged on the fluidized gas inlet pipe of the coating part; the flow equalizing plate is used for uniformly dispersing fluidizing gas and blocking powder, the air pressure detecting device is used for monitoring the air pressure value in the tank body in real time, and the filtering device is used for preventing the powder from flowing out of the tank body along the fluidizing gas.

2. The continuous powder coating production apparatus according to claim 1, wherein: the preheating part is provided with two at least, the cladding part is provided with one, the cooling part is provided with one at least, every the defeated material outlet pipe of preheating part through first lead to the connecting piece with the defeated material of cladding part advances the pipe and is linked together, every the defeated material of cooling part advances the pipe through the second lead to the connecting piece with the defeated material outlet pipe of cladding part is linked together.

3. The continuous powder coating production apparatus according to claim 1, wherein: the preheating part is provided with two at least, the cladding part is provided with two at least, the cooling portion is provided with one at least, each the cladding part is the intercommunication of establishing ties in proper order, every the defeated material outlet pipe of preheating part lead to the connecting piece through the third with be in the initial position the cladding part the defeated material advances the pipe and is linked together, every the defeated material inlet pipe of cooling portion lead to the connecting piece through the fourth with be in terminal position the defeated material outlet pipe of cladding part is linked together.

4. The continuous powder coating production apparatus according to any one of claims 1 to 3, characterized in that: the lower part of the tank body is provided with a round table structure with a large upper part and a small lower part.

5. The continuous powder coating production apparatus according to claim 4, wherein: the flow equalizing plate is made of heat-resistant materials.

6. The continuous powder coating production apparatus according to claim 5, wherein: the material conveying pipe is connected to the tank body horizontally or in a direction which forms an upward acute angle with the vertical direction.

7. The continuous powder coating production apparatus according to claim 6, wherein: the vacuum valve is a butterfly valve or a gate valve.