CN112484435A - Hot air drying type powder coating drying device and powder coating drying method - Google Patents

Hot air drying type powder coating drying device and powder coating drying method Download PDF

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Publication number
CN112484435A
CN112484435A CN202011371058.9A CN202011371058A CN112484435A CN 112484435 A CN112484435 A CN 112484435A CN 202011371058 A CN202011371058 A CN 202011371058A CN 112484435 A CN112484435 A CN 112484435A
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CN
China
Prior art keywords
drying
drying chamber
hot air
powder coating
air inlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202011371058.9A
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Chinese (zh)
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CN112484435B (en
Inventor
马伟光
孙健
蒋灿
陈海林
李鲁平
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Hilong Petroleum Products Technical Service Shanghai Co ltd
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Hilong Petroleum Products Technical Service Shanghai Co ltd
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Priority to CN202011371058.9A priority Critical patent/CN112484435B/en
Publication of CN112484435A publication Critical patent/CN112484435A/en
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Publication of CN112484435B publication Critical patent/CN112484435B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/12Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/001Drying-air generating units, e.g. movable, independent of drying enclosure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/001Handling, e.g. loading or unloading arrangements
    • F26B25/002Handling, e.g. loading or unloading arrangements for bulk goods
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/04Agitating, stirring, or scraping devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/06Chambers, containers, or receptacles
    • F26B25/08Parts thereof
    • F26B25/12Walls or sides; Doors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/06Chambers, containers, or receptacles
    • F26B25/14Chambers, containers, receptacles of simple construction
    • F26B25/18Chambers, containers, receptacles of simple construction mainly open, e.g. dish, tray, pan, rack

Abstract

The invention provides a hot air drying type powder coating drying device and a powder coating drying method. The hot air drying type powder coating drying device comprises a drying chamber, wherein a hot air inlet and an air outlet for leading in drying hot air are formed in the drying chamber, and a one-way valve is arranged at the hot air inlet; a filtering device is arranged on the air outlet; the hot air supply system comprises a fan, a preheater and a middle box which are sequentially connected, and an air outlet of the middle box is in butt joint conduction with a hot air inlet; the bottom of the right end of the drying chamber is hinged with the supporting frame, the supporting frame is also hinged with an air cylinder, and a piston rod of the air cylinder is hinged with the bottom of the left end of the drying chamber; the right-hand member of drying chamber is the material mouth, and the material mouth can be dismantled and be connected with the lid. This patent adopts hot-blast drying to the powder, realizes that the powder plays in the drying chamber and flutters to and the timely output of vapor, improved the stoving homogeneity of powder, avoided the problem of caking.

Description

Hot air drying type powder coating drying device and powder coating drying method
Technical Field
The invention relates to the technical field of machinery, in particular to a powder drying device and a powder drying method.
Background
When the petroleum pipeline internal coating product is produced, in order to ensure the construction quality, the powder coating needs to be dried, and the powder is dried by mainly adopting an oven in the prior art. The traditional oven drying has the following defects:
1) the powder is easy to agglomerate, the drying degree is not uniform, and the efficiency is low.
2) When traditional oven stoving powder, need put the powder in heat-resisting container, need high temperature resistant gloves to take when taking out, in the powder transfer process, there is the risk of scald easily.
3) If the powder is directly laid in an oven, the powder cannot be easily taken out.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a hot air drying type powder coating drying device to solve at least one technical problem.
The invention also provides a powder coating drying method to solve at least one technical problem.
The technical scheme of the invention is as follows: the hot air drying type powder coating drying device comprises a drying chamber, wherein a hot air inlet and an air outlet for leading in drying hot air are formed in the drying chamber;
a filtering device is arranged on the air outlet;
the hot air supply system comprises a fan, a preheater and a middle box which are sequentially connected, and an air outlet of the middle box is in butt joint conduction with the hot air inlet;
the middle box is provided with an air outlet, the air outlet of the middle box is in butt joint conduction with the hot air inlet through a butt joint pipeline, and a temperature sensor and a flow control valve are sequentially installed on the butt joint pipeline along the flow guide direction;
the middle box is provided with an air inlet, and the air inlet of the middle box is provided with a one-way valve;
the middle box is provided with a pressure relief opening, a pressure relief valve is arranged on the pressure relief opening, and an outlet of the pressure relief valve is in butt joint communication with an inlet of the fan through a pipeline;
an air inlet of the fan is communicated with an air inlet pipeline and a preheating recovery pipeline, the air inlet pipeline is communicated with the atmosphere through a pressure regulating valve, the preheating recovery pipeline is communicated with an outlet of the pressure release valve through a pipeline, and a valve is arranged on the pipeline;
the bottom of the right end of the drying chamber is hinged with the supporting frame, the supporting frame is also hinged with an air cylinder, and a piston rod of the air cylinder is hinged with the bottom of the left end of the drying chamber;
the right-hand member of drying chamber is the material mouth, the material mouth can be dismantled and be connected with the lid.
This patent adopts hot-blast drying to the powder, realizes that the powder plays in the drying chamber and flutters to and the timely output of vapor, improved the stoving homogeneity of powder, avoided the problem of caking. Through the cylinder, be convenient for realize that the upset of drying chamber is emptyd, the transfer of the powder of being convenient for, the effectual probability of scalding in having avoided the transfer.
Through the combination of the air inlet pipeline and the preheating recovery pipeline, the heat in the middle box can be conveniently recycled.
The middle box is convenient for realizing the air pressure in the middle box through the combination of the pressure release valve and the one-way valve.
Further preferably, the filtering device is detachably connected with the air outlet;
the filtering device comprises a frame and a filtering net connected with the frame.
Preferably, the periphery above the air outlet is provided with sliding chutes which are arranged in front and at the back, the outer edge of the filtering device is provided with a frame, and the frame is in sliding insertion connection with the sliding chutes;
the bottom of the frame is adhered with a rectangular sealing ring, the rectangular sealing ring is positioned on the periphery of the filter screen, and the thickness of the rectangular sealing ring is gradually reduced from left to right;
and a handle is arranged above the frame.
The replacement of the filtering device is convenient and the sealing performance of the air outlet is ensured by the sealing ring.
Further preferably, the drying device further comprises a storage bin, wherein the storage bin is used for butting the powder led out from the drying chamber;
the storage bin is adjacent to the drying chamber.
Facilitating the collection of the powder.
Preferably, the discharge port of the drying chamber is detachably connected with an upper opening of a material guiding bag with an upper opening and a lower opening, and the lower opening of the material guiding bag extends into the upper opening of the storage bin.
Facilitating the guiding of the pouring of the powder.
More preferably, the right end of the drying chamber is a guide portion having an inner diameter decreasing from left to right.
The blanking is convenient to pour.
Further preferably, an anti-adhesion coating is coated in the drying chamber. The anti-adhesion coating may be a teflon coating.
The hot air drying type powder coating drying device is used for drying, and is characterized by comprising the following steps:
placing materials in a drying chamber;
secondly, starting the fan and the preheater, transmitting a temperature signal to the controller by the temperature sensor, and controlling the flow control valve to be at an appropriate opening degree by the controller when the temperature sensor senses that the temperature reaches a set temperature;
and step three, the controller adjusts the drying time according to the amount of the materials placed in the drying chamber.
Preferably, the drying chamber comprises a tank body and a support frame sleeved on the periphery of the tank body, the support frame is rotatably connected with the drying chamber, the right end of the support frame is hinged with the support frame, and the left end of the support frame is hinged with a piston rod of the cylinder;
also comprises a magnetic stirring mechanism;
the magnetic stirring mechanism comprises a magnet arranged in the drying chamber and a permanent magnet mechanism arranged outside the drying chamber;
the permanent magnet mechanism comprises a permanent magnet, a magnet mounting ring sleeved on the periphery of the drying chamber and a telescopic mechanism for driving the magnet mounting ring to slide left and right;
one end of the telescopic mechanism is connected with the periphery of the drying chamber, and the other end of the telescopic mechanism is connected with the magnet mounting ring;
the periphery of the drying chamber is provided with a sliding chute with the guiding direction in the left-right direction, and the drying chamber is connected with the magnet mounting ring in a left-right sliding manner through the sliding chute;
the magnetic stirring mechanism also comprises a driving motor for driving the drying chamber to rotate circumferentially, a power output shaft of the driving motor is in transmission connection with a gear, and the outer wall of the magnet mounting ring is meshed with the gear; the gear is positioned below the magnet mounting ring;
the driving motor and the gear are both arranged on a linear electric sliding table, and the linear electric sliding table is arranged on a support frame;
the supporting frame is also provided with a rotary joint, and the hot air inlet is communicated with the middle box through the rotary joint;
the pressure relief port is communicated with an inlet of the fan through the rotary joint.
This patent is through adding magnetic stirring mechanism, to the stirring effect of material when being convenient for realize drying, improves drying uniformity.
Preferably, at least three material baffles horizontally arranged are arranged in the drying chamber adjacent to the air outlet, and the at least three material baffles form a circuitous air path;
the front end and the rear end of the striker plate are connected with the inner wall of the drying chamber;
and a passage for a magnet path is formed in the material baffle plate.
So as to reduce the probability of the powder coating material passing to the air outlet.
Preferably, at least five infrared emitting devices and infrared receiving devices which are arranged adjacently are arranged on the inner wall of the drying chamber, the infrared receiving devices are connected with a controller, and a timing device is arranged in the controller;
and the controller obtains the depth of the powder in the drying chamber according to the time difference between the infrared signal received by the infrared receiving device and the infrared light emitted by the infrared emitting device.
So as to facilitate the organic adjustment of the drying time according to the powder of different depths. After the drying chamber is rotated by the magnetic stirring mechanism, the powder is placed in the drying chamber in a parallel and level mode, and unevenness of the depth of the powder is reduced. When infrared transmitting device and infrared receiving device carried out degree of depth detection, the magnetite removed the top to the drying chamber, avoided the magnetite to the interference of powder degree of depth.
The hot air drying type powder coating drying device is used for drying, and is characterized by comprising the following steps:
placing materials in a drying chamber;
starting a fan and a preheater, and stirring the materials in the drying chamber by a magnetic stirring mechanism;
step three, the temperature sensor transmits a temperature signal to the controller, and when the temperature sensor senses that the temperature reaches a set temperature, the controller controls the flow control valve to be at an appropriate opening degree;
and step four, the controller adjusts the drying time according to the amount of the materials placed in the drying chamber.
Drawings
FIG. 1 is a front view of embodiment 1 of the present invention;
fig. 2 is a partial structural view of an air inlet of a drying chamber according to embodiment 1 of the present invention;
FIG. 3 is a schematic view showing a structure of a filter device according to embodiment 1 of the present invention;
fig. 4 is a schematic structural view of a drying chamber according to embodiment 2 of the present invention.
In the figure: the drying device comprises a drying chamber 1, a fan 2, a preheater 3, a middle box 4, a cylinder 5, a storage bin 6, a support frame 7, a flow control valve 8, a temperature sensor 9, a pressure release valve 10, a pressure regulating valve 11, a filtering device 12, an air outlet 13, a sliding chute 14, a frame 15, a filter screen 16, a handle 17, a rectangular sealing ring 18, a supporting frame 21, a telescopic mechanism 22, a magnet mounting ring 23, a gear 24 and a driving motor 25.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Referring to fig. 1 to 3, in embodiment 1, the hot air drying type powder coating drying device includes a drying chamber 1, a hot air inlet and an air outlet 13 for guiding drying hot air are formed in the drying chamber 1, and a check valve is installed at the hot air inlet; the air outlet 13 is provided with a filtering device 12; the hot air supply system comprises a fan 2, a preheater 3 and an intermediate box 4 which are sequentially connected, and an air outlet of the intermediate box 4 is in butt joint conduction with a hot air inlet; the middle box 4 is provided with an air outlet, the air outlet of the middle box 4 is in butt joint conduction with the hot air inlet through a butt joint pipeline, and a temperature sensor 9 and a flow control valve 8 are sequentially installed on the butt joint pipeline along the flow guide direction; the middle box 4 is provided with an air inlet, and the air inlet of the middle box 4 is provided with a one-way valve; the middle box 4 is provided with a pressure relief opening, a pressure relief valve 10 is arranged on the pressure relief opening, and an outlet of the pressure relief valve 10 is in butt joint communication with an inlet of the fan 2 through a pipeline; an air inlet of the fan 2 is communicated with an air inlet pipeline and a preheating recovery pipeline, the air inlet pipeline is communicated with the atmosphere through a pressure regulating valve 11, the preheating recovery pipeline is communicated with an outlet of a pressure release valve 10 through a pipeline, a valve is arranged on the pipeline, the valve can be a one-inlet-two-outlet valve, one outlet of the one-inlet-two-outlet valve is communicated with the air inlet of the fan 2, and the other outlet of the one-inlet-two-outlet valve is communicated with the atmosphere; the drying chamber is characterized by further comprising a support frame 7, the bottom of the right end of the drying chamber 1 is hinged with the support frame 7, an air cylinder 5 is further hinged on the support frame 7, and a piston rod of the air cylinder 5 is hinged with the bottom of the left end of the drying chamber 1; the right-hand member of drying chamber 1 is the material mouth, and the material mouth can be dismantled and be connected with the lid.
This patent adopts hot-blast drying to the powder, realizes that the powder plays to fly in drying chamber 1 to and the timely output of vapor, improved the stoving homogeneity of powder, avoided the problem of caking. Through cylinder 5, be convenient for realize that the upset of drying chamber 1 is emptyd, the transfer of the powder of being convenient for, the effectual probability of scalding in having avoided the transfer.
Through the combination of the air inlet pipeline and the preheating recovery pipeline, the heat in the intermediate box 4 can be conveniently recycled.
The intermediate tank 4 is convenient for realizing the air pressure in the intermediate tank 4 by combining the pressure relief valve 10 and the one-way valve.
The filtering device 12 is detachably connected with the air outlet 13; the filter device 12 includes a filter net and a filter net connected to the frame. The periphery above the air outlet 13 is provided with a sliding chute 14 which is arranged in front and at the back, the outer edge of the filtering device is provided with a frame 15, and the frame 15 is in sliding insertion connection with the sliding chute 14; a rectangular sealing ring 18 is adhered to the bottom of the frame 15 of the filtering device, the rectangular sealing ring 18 is positioned on the periphery of the filter screen 16, and the thickness of the rectangular sealing ring decreases progressively from left to right. The replacement of the filtering device is convenient and the sealing performance of the air outlet is ensured by the sealing ring. A handle 17 is mounted above the frame 15. The right ends of the sliding grooves arranged in the front and the back are connected through a limiting bulge. The limiting protrusion is used for limiting the limit of the filter device which is inserted in a sliding mode from left to right. The filter screen is detachably connected with the frame. The filter screen is convenient to replace. For example, the frame can be a frame formed by detachably connecting four side plates. U-shaped grooves used for limiting the filter screen are formed in the four side plates.
The device also comprises a storage bin 6, wherein the storage bin 6 is used for butting the powder led out from the drying chamber 1; the storage bin 6 is arranged adjacent to the drying chamber 1. Facilitating the collection of the powder.
The discharge port of the drying chamber 1 is detachably connected with the upper port of a material guide bag with an upper opening and a lower opening, and the lower port of the material guide bag extends into the upper port of the storage bin 6. Facilitating the guiding of the pouring of the powder.
The right end of the drying chamber 1 is a guide portion whose inner diameter decreases from left to right. The blanking is convenient to pour.
At least three material blocking plates which are horizontally arranged are arranged in the drying chamber and are adjacent to the air outlet, and a circuitous air path is formed by the at least three material blocking plates; the front end and the rear end of the baffle plate are connected with the inner wall of the drying chamber. So as to reduce the probability of the powder coating material passing to the air outlet.
A powder coating drying method adopts a hot air drying type powder coating drying device for drying, and comprises the following steps:
placing materials in a drying chamber;
secondly, starting the fan and the preheater, transmitting a temperature signal to the controller by the temperature sensor, and controlling the flow control valve to be at an appropriate opening degree by the controller when the temperature sensor senses that the temperature reaches a set temperature;
and step three, the controller adjusts the drying time according to the amount of the materials placed in the drying chamber.
Referring to fig. 4, in embodiment 2, based on embodiment 1, the drying chamber includes a tank body and a supporting frame 21 sleeved on the periphery of the tank body, the supporting frame 21 is rotatably connected to the drying chamber, the right end of the supporting frame 21 is hinged to the supporting frame, and the left end of the supporting frame 21 is hinged to the piston rod of the cylinder; also comprises a magnetic stirring mechanism; the magnetic stirring mechanism comprises a magnet arranged in the drying chamber and a permanent magnet mechanism arranged outside the drying chamber; the permanent magnet mechanism comprises a permanent magnet, a magnet mounting ring 23 sleeved on the periphery of the drying chamber and a telescopic mechanism 22 for driving the magnet mounting ring 23 to slide left and right; one end of the telescopic mechanism 22 is connected with the periphery of the drying chamber, and the other end of the telescopic mechanism 22 is connected with the magnet mounting ring 23; the periphery of the drying chamber is provided with a sliding chute with the guiding direction in the left-right direction, and the drying chamber is connected with the magnet mounting ring 23 in a left-right sliding manner through the sliding chute; the magnetic stirring mechanism also comprises a driving motor 25 for driving the drying chamber to rotate circumferentially, a power output shaft of the driving motor 25 is in transmission connection with a gear 24, and the outer wall of the magnet mounting ring is meshed with the gear 24; the gear 24 is located below the magnet mounting ring 23; the driving motor 25 and the gear 24 are both arranged on a linear electric sliding table which is arranged on the supporting frame; the support frame is also provided with a rotary joint, and the hot air inlet is communicated with the middle box through the rotary joint; the pressure relief port is communicated with an inlet of the fan through a rotary joint. This patent is through adding magnetic stirring mechanism, to the stirring effect of material when being convenient for realize drying, improves drying uniformity.
The gas outlet is arranged in the inner concave part, and the filtering device is embedded in the inner concave part. The sliding interference caused by the outward protrusion of the filtering device is avoided.
At least three material blocking plates which are horizontally arranged can be arranged in the drying chamber and are adjacent to the air outlet, and a circuitous air path is formed by the at least three material blocking plates; the front end and the rear end of the striker plate are connected with the inner wall of the drying chamber; the striker plate is provided with a channel for a magnet path. So as to reduce the probability of the powder coating material passing to the air outlet.
At least five infrared transmitting devices and infrared receiving devices which are arranged adjacently are arranged on the inner wall of the drying chamber, the infrared receiving devices are connected with a controller, and a timing device is arranged in the controller; the controller obtains the depth of the powder in the drying chamber according to the time difference between the infrared signal received by the infrared receiving device and the infrared light emitted by the infrared emitting device. So as to facilitate the organic adjustment of the drying time according to the powder of different depths. After the drying chamber is rotated by the magnetic stirring mechanism, the powder is placed in the drying chamber in a parallel and level mode, and unevenness of the depth of the powder is reduced. When infrared transmitting device and infrared receiving device carried out degree of depth detection, the magnetite removed the top to the drying chamber, avoided the magnetite to the interference of powder degree of depth.
A powder coating drying method adopts a hot air drying type powder coating drying device for drying, and is characterized by comprising the following steps:
placing materials in a drying chamber;
starting a fan and a preheater, and stirring the materials in the drying chamber by a magnetic stirring mechanism;
step three, the temperature sensor transmits a temperature signal to the controller, and when the temperature sensor senses that the temperature reaches a set temperature, the controller controls the flow control valve to be at an appropriate opening degree;
and step four, the controller adjusts the drying time according to the amount of the materials placed in the drying chamber.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims (10)

1. The hot air drying type powder coating drying device comprises a drying chamber, wherein a hot air inlet and an air outlet for leading in drying hot air are formed in the drying chamber;
a filtering device is arranged on the air outlet;
the hot air supply system comprises a fan, a preheater and a middle box which are sequentially connected, and an air outlet of the middle box is in butt joint conduction with the hot air inlet;
the middle box is provided with an air outlet, the air outlet of the middle box is in butt joint conduction with the hot air inlet through a butt joint pipeline, and a temperature sensor and a flow control valve are sequentially installed on the butt joint pipeline along the flow guide direction;
the middle box is provided with an air inlet, and the air inlet of the middle box is provided with a one-way valve;
the middle box is provided with a pressure relief opening, a pressure relief valve is arranged on the pressure relief opening, and an outlet of the pressure relief valve is in butt joint communication with an inlet of the fan through a pipeline;
an air inlet of the fan is communicated with an air inlet pipeline and a preheating recovery pipeline, the air inlet pipeline is communicated with the atmosphere through a pressure regulating valve, the preheating recovery pipeline is communicated with an outlet of the pressure release valve through a pipeline, and a valve is arranged on the pipeline;
the bottom of the right end of the drying chamber is hinged with the supporting frame, the supporting frame is also hinged with an air cylinder, and a piston rod of the air cylinder is hinged with the bottom of the left end of the drying chamber;
the right-hand member of drying chamber is the material mouth, the material mouth can be dismantled and be connected with the lid.
2. The hot air drying type powder coating drying device according to claim 1, wherein: the filtering device is detachably connected with the air outlet;
the filtering device comprises a frame and a filtering net connected with the frame.
3. The hot air drying type powder coating drying device according to claim 1, wherein: the periphery above the air outlet is provided with a sliding chute which is arranged in the front and at the back, the outer edge of the filtering device is provided with a frame, and the frame is in sliding insertion connection with the sliding chute;
the bottom of the frame is adhered with a rectangular sealing ring, the rectangular sealing ring is positioned on the periphery of the filter screen, and the thickness of the rectangular sealing ring is gradually reduced from left to right;
and a handle is arranged above the frame.
4. The hot air drying type powder coating drying device according to claim 1, wherein: the storage bin is used for butting the powder led out from the drying chamber;
the storage bin is adjacent to the drying chamber.
5. The hot air drying type powder coating drying device according to claim 1, wherein: an anti-adhesion coating is coated in the drying chamber.
6. The hot air drying type powder coating drying device according to claim 1, wherein: the drying chamber comprises a tank body and a supporting frame sleeved on the periphery of the tank body, the supporting frame is rotatably connected with the drying chamber, the right end of the supporting frame is hinged with the supporting frame, and the left end of the supporting frame is hinged with a piston rod of the air cylinder;
also comprises a magnetic stirring mechanism;
the magnetic stirring mechanism comprises a magnet arranged in the drying chamber and a permanent magnet mechanism arranged outside the drying chamber;
the permanent magnet mechanism comprises a permanent magnet, a magnet mounting ring sleeved on the periphery of the drying chamber and a telescopic mechanism for driving the magnet mounting ring to slide left and right;
one end of the telescopic mechanism is connected with the periphery of the drying chamber, and the other end of the telescopic mechanism is connected with the magnet mounting ring;
the periphery of the drying chamber is provided with a sliding chute with the guiding direction in the left-right direction, and the drying chamber is connected with the magnet mounting ring in a left-right sliding manner through the sliding chute;
the magnetic stirring mechanism also comprises a driving motor for driving the drying chamber to rotate circumferentially, a power output shaft of the driving motor is in transmission connection with a gear, and the outer wall of the magnet mounting ring is meshed with the gear; the gear is positioned below the magnet mounting ring;
the driving motor and the gear are both arranged on a linear electric sliding table, and the linear electric sliding table is arranged on a support frame;
the supporting frame is also provided with a rotary joint, and the hot air inlet is communicated with the middle box through the rotary joint;
the pressure relief port is communicated with an inlet of the fan through the rotary joint.
7. The hot air drying type powder coating drying device according to claim 6, wherein: at least three material blocking plates which are horizontally arranged are arranged in the drying chamber and are adjacent to the air outlet, and a circuitous air path is formed by the at least three material blocking plates;
the front end and the rear end of the striker plate are connected with the inner wall of the drying chamber;
and a passage for a magnet path is formed in the material baffle plate.
8. The hot air drying type powder coating drying device according to claim 6, wherein: at least five infrared transmitting devices and infrared receiving devices which are arranged adjacently are arranged on the inner wall of the drying chamber, the infrared receiving devices are connected with a controller, and a timing device is arranged in the controller;
and the controller obtains the depth of the powder in the drying chamber according to the time difference between the infrared signal received by the infrared receiving device and the infrared light emitted by the infrared emitting device.
9. A powder coating drying method, which adopts the hot air drying type powder coating drying device of claim 1 to dry, and is characterized by comprising the following steps:
placing materials in a drying chamber;
secondly, starting the fan and the preheater, transmitting a temperature signal to the controller by the temperature sensor, and controlling the flow control valve to be at an appropriate opening degree by the controller when the temperature sensor senses that the temperature reaches a set temperature;
and step three, the controller adjusts the drying time according to the amount of the materials placed in the drying chamber.
10. A powder coating drying method, which adopts the hot air drying type powder coating drying device of claim 6 to dry, is characterized by comprising the following steps:
placing materials in a drying chamber;
starting a fan and a preheater, and stirring the materials in the drying chamber by a magnetic stirring mechanism;
step three, the temperature sensor transmits a temperature signal to the controller, and when the temperature sensor senses that the temperature reaches a set temperature, the controller controls the flow control valve to be at an appropriate opening degree;
and step four, the controller adjusts the drying time according to the amount of the materials placed in the drying chamber.
CN202011371058.9A 2020-11-30 2020-11-30 Hot air drying type powder coating drying device and powder coating drying method Active CN112484435B (en)

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CN211290865U (en) * 2019-12-24 2020-08-18 广州市辉乐医药科技有限公司 Vacuum drying oven
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