CN116901397A - Extrusion device for preparing high-temperature-resistant powder coating - Google Patents
Extrusion device for preparing high-temperature-resistant powder coating Download PDFInfo
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- CN116901397A CN116901397A CN202311178394.5A CN202311178394A CN116901397A CN 116901397 A CN116901397 A CN 116901397A CN 202311178394 A CN202311178394 A CN 202311178394A CN 116901397 A CN116901397 A CN 116901397A
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- extrusion
- powder coating
- electric heater
- drying screen
- pipe
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- 238000001125 extrusion Methods 0.000 title claims abstract description 74
- 239000000843 powder Substances 0.000 title claims abstract description 26
- 239000011248 coating agent Substances 0.000 title claims abstract description 23
- 238000000576 coating method Methods 0.000 title claims abstract description 23
- 238000001035 drying Methods 0.000 claims abstract description 58
- 238000009413 insulation Methods 0.000 claims abstract description 24
- 239000002994 raw material Substances 0.000 claims description 48
- 239000000463 material Substances 0.000 claims description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 238000007789 sealing Methods 0.000 claims description 21
- 238000001816 cooling Methods 0.000 claims description 18
- 239000000498 cooling water Substances 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 8
- 239000012774 insulation material Substances 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 3
- 230000008602 contraction Effects 0.000 claims 1
- 238000010030 laminating Methods 0.000 abstract description 2
- 238000003466 welding Methods 0.000 abstract 1
- 239000012535 impurity Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000004744 fabric Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 206010027146 Melanoderma Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
- B29B13/065—Conditioning or physical treatment of the material to be shaped by drying of powder or pellets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/287—Raw material pre-treatment while feeding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/397—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using a single screw
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/802—Heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/82—Cooling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses an extrusion device for preparing high-temperature-resistant powder coating, and relates to the technical field of powder coating extrusion equipment. The invention comprises the following steps: the frame, the one end welding that driving motor was kept away from at frame top has the outer support, the one end fixedly connected with electric heater that the outer support is close to driving motor, electric heater's internally mounted has the recipient, the insulating sheath has been cup jointed in electric heater's the outside, the automatic pivoted dry sieve feed cylinder has been cup jointed in the outside of insulating sheath, the inside of dry sieve feed cylinder is provided with interior flight, the inseparable rotatory laminating of interior flight is at the surface of insulating sheath. According to the invention, through the arrangement of the heat insulation sleeve and the drying screen charging barrel, the heat insulation sleeve insulates most of the heat of the electric heater, the heat generated by the electric heater is used for drying, no additional heat source is needed, and meanwhile, the heat loss of the heat insulation sleeve can be reduced, so that the energy utilization rate can be improved.
Description
Technical Field
The invention relates to the technical field of powder coating extrusion equipment, in particular to an extrusion device for preparing high-temperature-resistant powder coating.
Background
The powder coating is in a form completely different from that of a general coating, exists in a state of fine powder, has a complex production process and mainly comprises the following steps: material receiving, weighing, premixing, melt extrusion, tabletting, coarse crushing, fine crushing, detection, packaging and warehousing.
Extrusion is the core process of powder production, the decisive influence to powder quality, it is higher to the raw materials quality requirement when powder coating is extruded, the raw materials should reach required drying requirement, and need to sieve the raw materials and get rid of mechanical impurity, when moisture content in raw materials is too big, can lead to appearing the material flower in the extruded material, black spot appears in the material that can lead to extruding when having impurity in the raw materials, all can influence extrusion quality, and current extruder is through pressure and the shearing force that relies on the screw rod rotation to produce, can make the material can fully plasticize and evenly mix, through the bush shaping, consequently can only carry out single melt extrusion to the powder, can't dry the raw materials and remove the impurity in the extrusion, still need extra equipment to handle the raw materials before extruding, not only influence machining efficiency, and in raw materials transportation process, the raw materials is easily by secondary pollution, and current extruder is usually in hopper adds accuse volume device and comes control hopper export size, so as to reach the effect of controlling the feeding volume, when the hopper export is less, easy to appear the crane span structure, and the outlet is easy to be blocked, the control degree of difficulty is big, control is poor.
Disclosure of Invention
The invention aims at: the invention provides an extrusion device for preparing high-temperature-resistant powder coating, which aims to solve the problem that drying and impurity removal can not be carried out during extrusion and the effect of controlling the feeding amount is poor.
The invention adopts the following technical scheme for realizing the purposes:
the extrusion device for preparing the high-temperature-resistant powder coating comprises an extrusion cylinder, wherein an extrusion screw is rotatably arranged in the extrusion cylinder along the axial direction of the extrusion cylinder, and an electric heater is sleeved outside the extrusion cylinder;
an inner spiral sheet is axially arranged inside the drying screen material cylinder, the inner spiral sheet is tightly attached to the outer surface of the heat insulation sleeve, raw materials are screened while being conveyed inside the drying screen material cylinder, heat exchange is formed between the raw materials and the outer surface of the heat insulation sleeve, and the raw materials subjected to screening and heat exchange are conveyed into the extrusion cylinder through the material blocking head;
the inside of interior flight has offered a plurality of material holes, and the inside of every material hole all is provided with sealed balloon, changes the aperture of material hole through the inflation and the shrink of sealed balloon.
Further, the inside of the heat insulation sleeve is of a cavity structure, water is filled in the cavity, and heat insulation materials are paved on the inner wall of the outer ring of the cavity.
Further, the pressure release pipe is installed to the one end of cavity, and the automatic relief valve that has the manometer is installed in the outside of pressure release pipe, and the one end that the dry sieve feed cylinder deviates from the blanking head is provided with intake pipe and blast pipe, and intake pipe and blast pipe all are linked together with all sealed balloon, and the end of giving vent to anger of intake pipe and blast pipe is provided with air inlet solenoid valve and exhaust solenoid valve respectively, and air inlet solenoid valve's the other end is linked together with the pressure release pipe, and exhaust solenoid valve's the other end is linked together with the external world.
Further, one end of the drying screen charging barrel, which is away from the plugging head, is provided with an outer ring groove, a connecting ring plate is installed in the inner sealing rotation of the outer ring groove, a gas ring cavity is formed between the connecting ring plate and the inner wall of the outer ring groove, the gas ring cavity is simultaneously communicated with all sealing gas rings, and an air inlet pipe and an air outlet pipe are respectively inserted on the connecting ring plate and are simultaneously communicated with the gas ring cavity.
The electric heater is fixedly connected to the outer support;
one end fixedly connected with transmission frame that dry sieve feed cylinder is close to driving motor, the outside of output shaft is provided with the axial key, and the transmission frame cup joints on the output shaft, and the keyway has been seted up to the inner wall of transmission frame, and axial key sliding connection is in the keyway.
Further, the loading hopper is installed at the top of frame, and the loading hopper cup joints in the outside of dry sieve feed cylinder, is formed with the charge door with the inside intercommunication of loading hopper on the dry sieve feed cylinder periphery to the loading hopper realizes the feeding with rotary state's charge door intermittent type formula intercommunication.
Further, a material baffle is rotatably arranged at the bottom of the charging hopper, is arc-shaped and is matched with a charging hole on the drying screen charging barrel;
the rotation center of the striker plate is provided with a torsion spring, and the torsion spring is used for driving the striker plate to rotate towards the vertical direction.
Further, the cooling tank has been seted up to electric heater's inner wall, and cooling tank's internally mounted has the cooling plate, and crooked cooling water hole has been seted up to the inside of cooling plate, and electric heater's bottom is provided with two sets of cooling tubes, and one is the inlet tube another is the outlet pipe, and the outlet pipe passes the cavity, and the inlet tube is linked together with the water inlet end of all cooling water holes, and the outlet pipe is linked together with the water outlet end of all cooling water holes.
Further, the blanking head is rotationally sealed with the drying screen charging barrel, the outer diameter of the blanking head is larger than that of the drying screen charging barrel, a discharging hole which is designed obliquely downwards is formed in the blanking head, a discharging pipe is inserted into the bottom of the discharging hole, and the discharging pipe is communicated with the charging hole on the extrusion barrel.
The beneficial effects of the invention are as follows:
according to the invention, through the arrangement of the heat insulation sleeve and the drying screen charging barrel, the heat insulation sleeve insulates most of the heat of the electric heater, only a small part of the heat which is enough for drying enters the drying screen charging barrel, the drying screen charging barrel and the extrusion screw rotate synchronously, the extrusion screw drives the raw material to move along the heat insulation sleeve in a spiral manner through the inner spiral sheet when in melt extrusion, so that the raw material can be dried, the heat generated by the electric heater is utilized for drying, no additional heat source is needed, and meanwhile, the heat loss of the heat insulation sleeve can be reduced, and the energy utilization rate can be improved.
According to the invention, the drying screen material cylinder is wound by the screen mesh to form a cylinder, the raw materials can be screened while the raw materials are conveyed in a spiral manner, and the drying screen material cylinder and the extrusion screw are synchronously rotated, so that the extrusion screw can remove impurities from the raw materials while melting and extruding, no additional equipment is required for screening, and the processing efficiency is high.
According to the invention, the inner spiral sheet is arranged in the drying screen charging barrel, the material passing hole is formed in the inner spiral sheet, the sealing balloon is arranged in the material passing hole, the inner diameter of the material passing hole is controlled by controlling the air pressure in the sealing balloon, and when the drying screen charging barrel drives the inner spiral sheet to rotate, part of raw materials pass through the material passing hole, so that the inner diameter of the material passing hole is controlled, the amount of the raw materials spirally conveyed by the inner spiral sheet in unit time can be controlled, the size of a charging hole is not required to be changed, blocking is not caused, and the feeding is more uniform due to spiral feeding.
Drawings
FIG. 1 is a schematic overall view of the present invention;
FIG. 2 is a partial schematic view of the present invention;
FIG. 3 is a schematic view in partial cross-section of a hopper of the present invention;
FIG. 4 is a schematic view of a portion of a sleeve according to the present invention;
FIG. 5 is a schematic view, partially in section, of a sleeve according to the present invention;
FIG. 6 is a schematic diagram of an electric heater of the present invention;
FIG. 7 is a schematic view of a first perspective of a dryer screen of the present invention;
FIG. 8 is a second perspective schematic view of a dryer screen of the present invention;
FIG. 9 is a schematic cross-sectional view of a dryer screen of the present invention;
FIG. 10 is an enlarged schematic view of portion A of FIG. 9 in accordance with the present invention;
fig. 11 is an enlarged schematic view of portion B of fig. 3 in accordance with the present invention.
Reference numerals: 1. a frame; 11. an outer bracket; 2. a driving motor; 3. a gear box; 4. an output shaft; 5. an extrusion cylinder; 51. extruding a screw; 52. a feed inlet; 6. an electric heater; 61. a cooling tank; 62. a cooling plate; 63. a cooling tube; 7. a heat insulating sleeve; 71. a material blocking head; 72. a discharge port; 73. a discharge pipe; 74. an automatic pressure release valve; 8. a drying screen cylinder; 81. a transmission frame; 82. a feed inlet; 83. an inner spiral sheet; 84. a material passing hole; 85. sealing the balloon; 86. an outer ring groove; 87. connecting the annular plates; 88. an air inlet pipe; 89. an air inlet electromagnetic valve; 810. an exhaust pipe; 811. an exhaust electromagnetic valve; 9. a hopper; 91. a striker plate; 92. and (3) a torsion spring.
Description of the embodiments
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The extrusion apparatus for preparing the high temperature resistant powder coating according to a preferred embodiment of the present invention will be described in detail below. As shown in fig. 1 to 11, the extrusion device for preparing the high temperature resistant powder coating comprises: the electric heating device comprises a frame 1, wherein a driving motor 2 and a gear box 3 are arranged at the top of the frame 1, the gear box 3 is in transmission connection with the output end of the driving motor 2, the output end of the gear box 3 is fixedly connected with an output shaft 4, one end of the top of the frame 1, which is far away from the driving motor 2, is welded with an outer support 11, one end of the outer support 11, which is close to the driving motor 2, is fixedly connected with an electric heater 6, an extrusion barrel 5 is arranged in the electric heater 6, an extrusion screw 51 in transmission connection with the output shaft 4 is arranged in the extrusion barrel 5 in an internal rotation manner, and a feed inlet 52 is formed in the top of the extrusion barrel 5.
The heat that electric heater 6 had cup jointed insulating jacket 7 in the outside of electric heater 6 passed insulating jacket 7 can only make the raw materials dry, can't melt the raw materials, the outside of insulating jacket 7 has cup jointed the dry screen feed cylinder 8 that can automatic rotate, dry screen feed cylinder 8 is the drum dress by the screen cloth coiling and makes, and this screen cloth can select the tiny impurity of ratio raw materials, the inside of dry screen feed cylinder 8 is provided with interior flight 83, the inseparable rotatory laminating of interior flight 83 is at the surface of insulating jacket 7, the interior of interior flight 83 has offered the material passing hole 84 that can pass through the raw materials, the inside of material passing hole 84 is provided with sealed balloon 85, can be with material passing hole 84 shutoff completely when sealed balloon 85 is fully expanded, sealed balloon 85 inside atmospheric pressure can be adjusted, the one end that the insulating jacket 7 is close to driving motor 2 is provided with the blanking head 71, blanking head 71 and dry screen feed cylinder 8 rotary seal, the external diameter of blanking head 71 is greater than the external diameter of dry screen feed cylinder 8, the inside of blanking head 71 has seted up discharge gate 72, the bottom grafting of discharge gate 72 has the discharge pipe 73 of slant lower design, the discharge pipe 73 of lower design, the discharge pipe 73 and the slant is more designed to fall into in the discharge pipe 73 in the feed pipe 73, the effect can be more easy to the discharge port 72.
In the actual use process, the electric heater 6 is electrified to generate heat to heat the extrusion cylinder 5, meanwhile, the driving motor 2 is connected with an external power supply, the driving motor 2 drives the gear box 3 to rotate, the gear box 3 drives the output shaft 4 to rotate, the output shaft 4 drives the extrusion screw 51 to rotate, the drying screen charging cylinder 8 and the extrusion screw 51 synchronously rotate, the drying screen charging cylinder 8 drives the inner spiral sheet 83 to rotate relative to the heat insulation sleeve 7, the heat insulation sleeve 7 isolates heat, the heat of the electric heater 6 penetrating through the heat insulation sleeve 7 only enables the raw materials to be dried, the raw materials cannot be melted, meanwhile, the heat insulation sleeve 7 can reduce the heat loss of the electric heater 6, and further, the energy utilization rate can be improved, during charging, the raw materials are added into the drying screen charging cylinder 8 through the charging hole 82, the drying screen charging cylinder 8 drives the inner spiral sheet 83 to rotate, the inner spiral piece 83 moves raw materials from the extrusion end of the extrusion cylinder 5 to the direction of the feed inlet 52 on the extrusion cylinder 5, the raw materials are dried by heat overflowed from the heat insulation sleeve 7 in the spiral conveying process, and are uniformly dried by spiral conveying, meanwhile, the drying screen cylinder 8 is formed by winding a screen cloth into a cylinder, and impurities finer than the raw materials can be screened out by the screen cloth, so that the raw materials are purified in the spiral conveying process, the raw materials can be processed in the extrusion process without adding an additional process, the conveyed raw materials enter the discharge hole 72, the raw materials enter the discharge pipe 73 through the discharge hole 72, the raw materials enter the feed inlet 52 through the discharge pipe 73, the raw materials are added into the extrusion cylinder 5 through the feed inlet 52, and the raw materials are spirally extruded by the extrusion screw 51.
When the feeding amount needs to be controlled, as the feeding hole 84 is arranged on the inner spiral sheet 83, the sealing air ring 85 is arranged in the feeding hole 84, the inner diameter of the feeding hole 84 is controlled by controlling the air pressure in the sealing air ring 85, when the drying screen charging barrel 8 drives the inner spiral sheet 83 to rotate, partial raw materials pass through the feeding hole 84, so that the feeding amount of the raw materials spirally conveyed by the inner spiral sheet 83 in unit time can be controlled by controlling the inner diameter of the feeding hole 84, the size of the feeding hole 82 does not need to be changed, the blocking is avoided, the feeding is more uniform due to the spiral feeding, meanwhile, the raw materials partially passing through the feeding hole 84 can be turned over, the drying efficiency is further improved, meanwhile, when the air pressure in the sealing air ring 85 is made to be lowest, the radius of the feeding hole 84 is the largest, at the moment, the raw materials cannot be conveyed by the inner spiral sheet 83, the feeding hole 84 can filter the internal bigger mechanical parts or magazines, and the extrusion barrel 5 is prevented from being blocked.
Since the drying screen cylinder 8 and the extrusion screw 51 rotate synchronously, and the radius of the drying screen cylinder 8 is far greater than that of the extrusion screw 51, the amount of the raw materials conveyed by the drying screen cylinder 8 is greater than that of the extrusion screw 51 in the same time, so that the amount of the raw materials conveyed by the drying screen cylinder 8 can be reduced by arranging the material passing holes 84 to prevent blocking, the amount of the raw materials conveyed by the drying screen cylinder 8 can be kept consistent with that of the extrusion screw 51, and extrusion stability is ensured.
Specifically, the pressure release pipe is installed to the one end of keeping away from driving motor 2 of cavity, and automatic relief valve 74 with the manometer is installed in the outside of pressure release pipe, and the one end that driving motor 2 was kept away from to dry sieve feed cylinder 8 is provided with intake pipe 88 and blast pipe 810, and intake pipe 88 is linked together with blast pipe 810 all sealed balloon 85 simultaneously, and the end of giving vent to anger of intake pipe 88 and blast pipe 810 is provided with air inlet solenoid valve 89 and exhaust solenoid valve 811 respectively, and air inlet solenoid valve 89's the other end is linked together with the pressure release pipe, and exhaust solenoid valve 811's the other end is linked together with the external world.
The heat insulation sleeve 7 is internally provided with a cavity, water is filled in the cavity, heat can be directly conducted by the inner wall of the cavity, which is close to the electric heater 6, and a heat insulation material is paved on the inner wall of the cavity, which is far away from the electric heater 6.
The extrusion temperature of the powder coating is usually 100-200 ℃, and heat insulation materials are paved on the inner wall of the cavity, which is close to the electric heater 6, and the inner wall of the cavity, which is far away from the electric heater 6, so that water in the cavity can be heated to boiling, a large amount of hot steam can be generated, the air pressure in the cavity can be judged by observing the pressure gauge, the air pressure in the cavity can be controlled by the arrangement of the automatic pressure relief valve 74, the air in the cavity can be automatically relieved by the automatic pressure relief valve 74 when the air pressure is overlarge, the opening pressure of the pressure relief valve can be changed by only rotating a screw on the automatic pressure relief valve 74, the air pressure in the cavity can be changed by adjusting the automatic pressure relief valve 74, when the sealing air ring 85 is required to be expanded, the air inlet valve 89 is controlled to be opened by an external controller, the cavity is communicated with the sealing air ring 85 by an air inlet pipe 88, so that the sealing air ring 85 is consistent with the air pressure in the cavity, the air pressure in the cavity can be directly controlled by adjusting the automatic pressure relief valve 74, the air pressure in the sealing air ring 85 is conveniently controlled, when the pressure is relieved, the air outlet valve is controlled by the external controller to be opened, the air outlet valve 810 is completely releases the air in the sealing air in the air ring 85, the air is not required to use of equipment, the air pressure in the sealing air ring is also required to be evenly utilized, and the air pressure in the air ring can be evenly dried by using the air pressure, and the air pressure can be further improved, and the air pressure can be evenly, and the air pressure can be further improved, and the air quality can be improved, and the air quality can be further, and the quality can be improved.
Further, an outer ring groove 86 is arranged at one end of the drying screen charging barrel 8 far away from the driving motor 2, a connecting ring plate 87 is installed in the outer ring groove 86 in a sealing and rotating mode, a gas ring cavity is formed between the connecting ring plate 87 and the inner wall of the outer ring groove 86, the gas ring cavity is simultaneously communicated with all sealing gas rings 85, and an air inlet pipe 88 and an air outlet pipe 810 are respectively inserted into the connecting ring plate 87 and are simultaneously communicated with the gas ring cavity.
In actual operation, the drying screen cylinder 8 rotates relative to the heat insulation sleeve 7, the pressure relief pipe is fixed on the heat insulation sleeve 7, the air inlet pipe 88 is fixed on the drying screen cylinder 8, and therefore the air inlet pipe 88 can be wound.
The drying screen cylinder 8 and the extrusion screw 51 in the invention synchronously rotate, and can share a set of driving system, and the specific arrangement is as follows: one end fixedly connected with drive frame 81 that dry sieve feed cylinder 8 is close to driving motor 2, the outside of output shaft 4 is provided with the axial key, and drive frame 81 cup joints on output shaft 4, and the keyway has been seted up to the inner wall of drive frame 81, and axial key sliding connection is in the keyway. When the drying sieve feeding device works, the driving motor 2 is connected with an external power supply, the driving motor 2 drives the gear box 3 to rotate, the gear box 3 drives the output shaft 4 to rotate, the output shaft 4 drives the extrusion screw 51 to rotate, meanwhile, the output shaft 4 drives the transmission frame 81 to rotate through the shaft key and the key groove, the transmission frame 81 drives the drying sieve feeding cylinder 8 to rotate, and the drying sieve feeding cylinder 8 and the extrusion screw 51 synchronously rotate.
Raw materials are firstly carried in the drying sieve feed cylinder 8 before entering the extrusion barrel 5, a feed inlet 82 is formed at one end of the drying sieve feed cylinder 8, which deviates from the blanking head 71, the feed inlet 82 is communicated with a feed hopper 9 arranged on the frame 1, the feed hopper 9 is sleeved on the outer side of the drying sieve feed cylinder 8, the feeding is realized when the feed inlet 82 on the drying sieve feed cylinder 8 rotates to be communicated with the feed hopper 9, and when the feed inlet 82 on the drying sieve feed cylinder 8 rotates to other positions, the bottom of the feed hopper 9 can be blocked by the drying sieve feed cylinder 8.
Specifically, a material baffle 91 is rotatably installed at the bottom of the hopper 9, and the material baffle 91 is arc-shaped and is matched with a feed inlet 82 on the drying screen feed cylinder 8; a torsion spring 92 is provided at the rotation center of the striker plate 91, and the torsion spring 92 is used to urge the striker plate 91 to rotate toward the vertical direction. When the charge door 82 on the dry screen feed cylinder 8 rotates to the top, the striker plate 91 swings to the vertical state under the action of the torsion spring 92, the lower part of the rotation center of the striker plate 91 can be inserted into the dry screen feed cylinder 8 through the charge door 82, and raw materials can automatically fall into the dry screen feed cylinder 8 at the moment.
In addition, the cooling tank 61 has been seted up to the inner wall of electric heater 6, and cooling tank 61's internally mounted has cooling plate 62, and the inside of cooling plate 62 has seted up crooked cooling water hole, and electric heater 6's bottom is provided with two sets of cooling tubes 63, and one set is the inlet tube another set is the outlet pipe, and the outlet pipe passes the cavity, and the inlet tube is linked together with the water inlet end of all cooling water holes, and the outlet pipe is linked together with the water outlet end of all cooling water holes. The cooling water enters the cooling water hole through the water inlet pipe, the cooling water hole takes away the heat generated by the electric heater 6, the extrusion temperature can be controlled more accurately, and when the cooling water hole is opened, the temperature of water in the cavity is lower and cannot be boiled rapidly, so that when the hot water discharged from the water outlet pipe passes through the cavity, part of heat is absorbed by the water in the cavity, the temperature of the water in the cavity can be improved rapidly, and the boiling efficiency of the water can be increased.
In the description of the present invention, the terms "first," "second," "another," "yet another" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features. In the description of the specific embodiments of the present invention, the meaning of "a plurality" is two or more, unless explicitly specified otherwise.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. The extrusion device for preparing the high-temperature-resistant powder coating comprises an extrusion barrel (5), wherein an extrusion screw (51) is rotatably arranged in the extrusion barrel (5) along the axial direction of the extrusion screw, and an electric heater (6) is sleeved outside the extrusion barrel, and the extrusion device is characterized in that a columnar heat insulation sleeve (7) is sleeved outside the electric heater (6), a drying screen charging barrel (8) which rotates synchronously with the extrusion screw (51) is sleeved outside the heat insulation sleeve (7), a material blocking head (71) is arranged at any end of the heat insulation sleeve (7), and the material blocking head (71) is used for communicating the drying screen charging barrel (8) with the extrusion barrel (5);
an inner spiral sheet (83) is axially arranged inside the drying screen material cylinder (8), the inner spiral sheet (83) is tightly attached to the outer surface of the heat insulation sleeve (7), raw materials are screened while being conveyed inside the drying screen material cylinder (8), heat exchange is formed between the raw materials and the outer surface of the heat insulation sleeve (7), and raw materials subjected to screening and heat exchange are conveyed into the extrusion cylinder (5) through the material blocking head (71);
a plurality of material passing holes (84) are formed in the inner spiral sheet (83), sealing air rings (85) are arranged in the material passing holes (84), and the aperture of the material passing holes (84) is changed through expansion and contraction of the sealing air rings (85).
2. The extrusion device for preparing the high-temperature-resistant powder coating according to claim 1, wherein the heat insulation sleeve (7) is of a cavity structure, water is filled in the cavity, and heat insulation materials are paved on the inner wall of an outer ring of the cavity.
3. The extrusion device for preparing the high-temperature-resistant powder coating according to claim 2, wherein a pressure relief pipe is arranged at one end of the cavity, an automatic pressure relief valve (74) with a pressure gauge is arranged at the outer side of the pressure relief pipe, an air inlet pipe (88) and an air outlet pipe (810) are arranged at one end of the drying screen charging barrel (8) deviating from the plugging head (71), the air inlet pipe (88) and the air outlet pipe (810) are all communicated with all sealing air rings (85), an air inlet electromagnetic valve (89) and an air outlet electromagnetic valve (811) are respectively arranged at the air outlet ends of the air inlet pipe (88) and the air outlet pipe (810), the other end of the air inlet electromagnetic valve (89) is communicated with the pressure relief pipe, and the other end of the air outlet electromagnetic valve (811) is communicated with the outside.
4. An extrusion device for preparing high temperature resistant powder coating according to claim 3, characterized in that one end of the drying screen cylinder (8) deviating from the plugging head (71) is provided with an outer ring groove (86), the inner part of the outer ring groove (86) is provided with a connecting ring plate (87) in a sealing rotation manner, a gas ring cavity is formed between the connecting ring plate (87) and the inner wall of the outer ring groove (86), the gas ring cavity is simultaneously communicated with all sealing gas rings (85), and an air inlet pipe (88) and an air outlet pipe (810) are respectively inserted on the connecting ring plate (87) and are simultaneously communicated with the gas ring cavity.
5. The extrusion device for preparing the high-temperature-resistant powder coating according to any one of claims 1 to 4, further comprising a frame (1), wherein a driving motor (2) and a gear box (3) are arranged at the top of the frame (1), the gear box (3) is in transmission connection with the output end of the driving motor (2), the output end of the gear box (3) is fixedly connected with an output shaft (4), the output shaft (4) is fixedly connected with an extrusion screw (51), an outer bracket (11) is arranged at the top of the frame (1), and an electric heater (6) is fixedly connected to the outer bracket (11);
one end of a drying screen charging barrel (8) close to a driving motor (2) is fixedly connected with a transmission frame (81), an axial key is arranged on the outer side of an output shaft (4), the transmission frame (81) is sleeved on the output shaft (4), a key groove is formed in the inner wall of the transmission frame (81), and the axial key is slidably connected in the key groove.
6. The extrusion device for preparing the high-temperature-resistant powder coating according to claim 5, wherein a hopper (9) is arranged at the top of the frame (1), the hopper (9) is sleeved on the outer side of the drying screen cylinder (8), a charging opening (82) communicated with the inside of the hopper (9) is formed on the circumferential surface of the drying screen cylinder (8), and the hopper (9) is intermittently communicated with the charging opening (82) in a rotating state to realize charging.
7. The extrusion device for preparing the high-temperature-resistant powder coating according to claim 6, wherein a baffle plate (91) is rotatably arranged at the bottom of the hopper (9), and the baffle plate (91) is arc-shaped and is matched with a feed inlet (82) on the drying screen feed cylinder (8);
a torsion spring (92) is arranged at the rotation center of the striker plate (91), and the torsion spring (92) is used for driving the striker plate (91) to rotate towards the vertical direction.
8. The extrusion device for preparing the high-temperature-resistant powder coating according to claim 7, wherein the cooling groove (61) is formed in the inner wall of the electric heater (6), the cooling plate (62) is arranged in the cooling groove (61), the bent cooling water holes are formed in the cooling plate (62), two groups of cooling pipes (63) are arranged at the bottom of the electric heater (6), one group is a water inlet pipe, the other group is a water outlet pipe, the water outlet pipe penetrates through the cavity, the water inlet pipe is communicated with the water inlet ends of all the cooling water holes, and the water outlet pipe is communicated with the water outlet ends of all the cooling water holes.
9. The extrusion device for preparing the high-temperature-resistant powder coating according to claim 8, wherein the material blocking head (71) is rotationally sealed with the drying screen charging barrel (8), the outer diameter of the material blocking head (71) is larger than that of the drying screen charging barrel (8), a discharging hole (72) which is designed obliquely downwards is formed in the material blocking head (71), a discharging pipe (73) is inserted at the bottom of the discharging hole (72), and the discharging pipe (73) is communicated with the feeding hole (52) on the extrusion barrel (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311178394.5A CN116901397A (en) | 2023-09-13 | 2023-09-13 | Extrusion device for preparing high-temperature-resistant powder coating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311178394.5A CN116901397A (en) | 2023-09-13 | 2023-09-13 | Extrusion device for preparing high-temperature-resistant powder coating |
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| CN116901397A true CN116901397A (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311178394.5A Pending CN116901397A (en) | 2023-09-13 | 2023-09-13 | Extrusion device for preparing high-temperature-resistant powder coating |
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|---|---|---|---|---|
| EP0124294A2 (en) * | 1983-04-05 | 1984-11-07 | Cactus Machinery Inc. | Apparatus for conditioning hygroscopie plastic material |
| CN2320037Y (en) * | 1997-11-04 | 1999-05-26 | 陈荣光 | Chestnut roaster |
| CN209320274U (en) * | 2018-12-27 | 2019-08-30 | 云南睿智新材料发展有限公司 | A kind of powdery paints extrusion device |
| CN212979193U (en) * | 2020-07-01 | 2021-04-16 | 广西美展新材料科技有限公司 | Powder coating extrusion cooling machine |
| CN215853027U (en) * | 2021-08-03 | 2022-02-18 | 芜湖思瀚新材料有限公司 | Anti-caking device for powder coating |
| CN115504460A (en) * | 2022-10-21 | 2022-12-23 | 安徽晟捷新能源科技股份有限公司 | Carbon nanotube purification rotary feeding equipment |
-
2023
- 2023-09-13 CN CN202311178394.5A patent/CN116901397A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0124294A2 (en) * | 1983-04-05 | 1984-11-07 | Cactus Machinery Inc. | Apparatus for conditioning hygroscopie plastic material |
| CN2320037Y (en) * | 1997-11-04 | 1999-05-26 | 陈荣光 | Chestnut roaster |
| CN209320274U (en) * | 2018-12-27 | 2019-08-30 | 云南睿智新材料发展有限公司 | A kind of powdery paints extrusion device |
| CN212979193U (en) * | 2020-07-01 | 2021-04-16 | 广西美展新材料科技有限公司 | Powder coating extrusion cooling machine |
| CN215853027U (en) * | 2021-08-03 | 2022-02-18 | 芜湖思瀚新材料有限公司 | Anti-caking device for powder coating |
| CN115504460A (en) * | 2022-10-21 | 2022-12-23 | 安徽晟捷新能源科技股份有限公司 | Carbon nanotube purification rotary feeding equipment |
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