CN109702925A - A kind of polytetrafluoroethyldispersion dispersion resin drying equipment - Google Patents

A kind of polytetrafluoroethyldispersion dispersion resin drying equipment Download PDF

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Publication number
CN109702925A
CN109702925A CN201811558658.9A CN201811558658A CN109702925A CN 109702925 A CN109702925 A CN 109702925A CN 201811558658 A CN201811558658 A CN 201811558658A CN 109702925 A CN109702925 A CN 109702925A
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CN
China
Prior art keywords
cabinet
dispersion resin
air
drying equipment
polytetrafluoroethyldispersion dispersion
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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.)
Pending
Application number
CN201811558658.9A
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Chinese (zh)
Inventor
余道腾
徐万鑫
徐美燚
余作斌
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Fujian Sannong New Material Co Ltd
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Fujian Sannong New Material Co Ltd
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Application filed by Fujian Sannong New Material Co Ltd filed Critical Fujian Sannong New Material Co Ltd
Priority to CN201811558658.9A priority Critical patent/CN109702925A/en
Publication of CN109702925A publication Critical patent/CN109702925A/en
Pending legal-status Critical Current

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Abstract

The present invention relates to organic chemistry technical field of drying, and in particular to a kind of polytetrafluoroethyldispersion dispersion resin drying equipment, including cabinet, multiple groups drying device and air transport device arranged side by side;The inside of the cabinet is the layer structure of connection;The drying device includes multiple material transmission units, inlet port and outlet port;For multiple material transmission units in being vertically staggered in the layer structure of the box house, the conveying direction of the material transmission unit of adjacent two is opposite;The air transport device is used to provide dried medium to the box house.The present invention makes the vertical descending branch of dewatered wet PTFE dispersion resin material on a moving belt realize material gravity from stirring, drying time is greatly shortened, entire drying process is the free evaporation process of convection current, is freely evaporated by convection current and temperature is greatly reduced to 120 ± 20 DEG C.

Description

A kind of polytetrafluoroethyldispersion dispersion resin drying equipment
Technical field
The present invention relates to organic chemistry technical field of drying, and in particular to a kind of polytetrafluoroethyldispersion dispersion resin is dry to be set It is standby.
Background technique
Polytetrafluoroethylene (PTFE) (PTFE) is a kind of high-molecular compound, has excellent high and low temperature resistance and chemical stabilization Property and the low performances such as thermally conductive of corrosion-resistant, high electrical insulating properties, high fire-retardance.Common polytetrafluoroethylproducts products are with polytetrafluoroethyl-ne Alkene suspending resin powder or dispersion resin particle are made;Wherein, polytetrafluoroethyldispersion dispersion resin particle is by monomer tetrafluoroethene (TFE) it is polymerized in the water for being added with dispersing agent, emulsifier, initiator, polymerization temperature is 40-80 DEG C, pressure is 0.3-2.6MPa, polytetrafluoroethyldispersion dispersion resin particle so obtained is aqueous wet feed, moisture content 40-60%.And root Point out according to HG/T3028-1999: qualified polytetrafluoroethyldispersion dispersion resin particle moisture content should be reduced to 0.04% hereinafter, so It just can guarantee that its quality of item is substantially qualified, the lower polytetrafluoroethylene (PTFE) moisture content the better, is further reduced to moisture content 0.02%, it is even lower, more excellent performance will be shown.
Although polytetrafluoroethylene (PTFE) has higher density, about 2.13-2.23g/cm3, but polytetrafluoroethyldispersion dispersion resin The bulk density of grain is very low, and about 475 ± 100g/L, average grain diameter is about 475 ± 150 μm, such little particle loosely-packed shape At the accumulation body capacity of heat transmission be far below polytetrafluoroethylproducts products, therefore polytetrafluoroethyldispersion dispersion resin particle can be considered as heat not Good conductor.Moreover, polytetrafluoroethyldispersion dispersion resin particle is compressible, easy agglomeration, not fingerprinting stress and easy fibrosis and it is high Electrical insulating property is easy to produce static electricity, and adsorbs the dust in air;And compress, agglomerate, fibrosis, dust pollution, it can all reduce poly- Tetrafluoroethene dispersion resin particle quality reduces its product strength, surface flatness reduces and color changes.This Outside, the dielectric constant of polytetrafluoroethyldispersion dispersion resin particle is 2.1, dielectric dissipation factor 3x10-4, absorb the ability pole of microwave It is low, it will not generate heat under the action of microwave.Due to polytetrafluoroethyldispersion dispersion resin particle have above-mentioned characteristic, to its wet feed into When row drying, most of conventional, higher drying mode of efficiency is all difficult to effectively be applied.
A kind of belt type dry for preparing dispersion PTFE resin of the disclosure of the invention of country Publication No. CN103148689B at present Dry device, the device include air blower, heater, filter, main drying, feeder, feeding warehouse, air-introduced machine and discharging bin, Air blower, heater, filter and main drying air inlet between pass sequentially through admission line connection, feeder is located at drying At the feed inlet of host, feeding warehouse is located above feeder, and air-introduced machine is connected by the gas outlet of outlet pipe and main drying, Discharging bin is located at below the discharge port of main drying, and the double-deck turn-around machine being made of webbing and steel band is equipped with inside main drying Structure.
Summary of the invention
The technical problems to be solved by the present invention are: providing a kind of from stirring, dried medium and material whole process reverse flow Polytetrafluoroethyldispersion dispersion resin drying equipment.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows: a kind of polytetrafluoroethyldispersion dispersion resin is dry Dry equipment, including cabinet, multiple groups drying device and air transport device arranged side by side;
The inside of the cabinet is the layer structure of connection, and the side on the cabinet top is equipped with multiple gas outlets, described The side of cabinet bottom end is equipped with multiple air inlets;
The drying device includes multiple material transmission units, inlet port and outlet port;
Multiple material transmission units in the layer structure of the box house in being vertically staggered, and adjacent two The conveying direction of the material transmission unit is on the contrary, the material transmission unit includes two drive rolls, multiple driven vollers and biography Band is sent, the head and the tail both ends that two drive rolls are respectively arranged on the conveyer belt are used to provide power, and multiple driven vollers are set Between two drive rolls, for the conveyer belt to be arranged to multiple climbing sections and multiple vertical descending brancies, adjacent two A climbing section is connected by the vertical descending branch, and the minimum point of the vertical descending branch is transmitted band by locating rod and determines Position, the locating rod are connect by locating pin with belt locating button;
The feed inlet is set to the side on the cabinet top, and is located at the upper of material transmission unit one end described in top layer Side;
The discharge port is set to the side of the cabinet bottom end, and is located under material transmission unit one end described in lowest level Side;
The air transport device be used for the box house provide dried medium, including successively by pipeline connection into Wind regulating valve, blower, air filter, dehumidifier and heater, the heater connect the air inlet.
Wherein, adjusting rod is arranged in the driven voller, and the adjusting rod is worn outside the cabinet.
Wherein, hand regulator, the regulator configuration graduated scale is arranged in the one end of the adjusting rod outside the cabinet.
Wherein, the cabinet where the feed inlet is equipped with limit wind intercommunicating pore, and the upper edge of the limit wind intercommunicating pore is away from described 5~10mm of zone face of conveyer belt.
Wherein, the air filter includes primary filter, medium effeciency filter and high efficiency particulate air filter.
Wherein, the gas outlet is equipped with gas exhausting valve and return-air control valve, and the return-air control valve is connected to by pipeline The medium effeciency filter.
Wherein, flow control valve is equipped at the feed inlet.
Wherein, the two sides of the conveyer belt are equipped with the side turned back inwards.
Wherein, the conveyer belt presses and smooth mill processing by surface in advance.
The beneficial effects of the present invention are: polytetrafluoroethyldispersion dispersion resin drying equipment provided by the invention, after making dehydration Wet PTFE dispersion resin material vertical descending branch on a moving belt realize that material gravity from stirring, promotes low layer material to translate into Surface layer, it is continuous that drying time is greatly shortened from stirring drying, compared with the drying oven of same 1 ton/batch of specification, dry 1 It is foreshortened within 4 hours within 24 hours between ton hour by current industry, and critical moisture content is greatly reduced, material water content can be reduced to 0.02%, current country PTFE dispersion resin product water content is 0.04%, and entire drying process is that convection current was freely evaporated Journey is freely evaporated by convection current and temperature is greatly reduced to 120 ± 20 DEG C, and current country PTFE dispersion resin drying temperature is about 200±20℃。
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the polytetrafluoroethyldispersion dispersion resin drying equipment of the specific embodiment of the invention;
Fig. 2 is the front view of the polytetrafluoroethyldispersion dispersion resin drying equipment of the specific embodiment of the invention;
Fig. 3 is the side view of the polytetrafluoroethyldispersion dispersion resin drying equipment of the specific embodiment of the invention;
Fig. 4 is the top view of the polytetrafluoroethyldispersion dispersion resin drying equipment of the specific embodiment of the invention;
Label declaration:
1, cabinet;11, gas outlet;12, air inlet;
2, drying device;21, material transmission unit;211, drive roll;212, driven voller;2121, hand regulator; 2122, graduated scale;213, conveyer belt;22, feed inlet;23, discharge port;
3, air transport device;31, air inlet adjustment valve;32, blower;33, air filter;34, dehumidifier;35, it heats Device.
Specific embodiment
To explain the technical content, the achieved purpose and the effect of the present invention in detail, below in conjunction with embodiment and cooperate attached Figure is explained.
The most critical design of the present invention is: material is interconnected in being realized in climbing section and vertical descending branch from stirring Box house layer structure make dried medium and material whole process reverse convection.
Fig. 1 and Fig. 4 is please referred to, polytetrafluoroethyldispersion dispersion resin of the invention is arranged side by side including cabinet 1, multiple groups Drying device 2 and air transport device 3;
The inside of the cabinet 1 is the layer structure of connection, and the side on 1 top of cabinet is equipped with multiple gas outlets 11, The side of 1 bottom end of cabinet is equipped with multiple air inlets 12;
The drying device 2 includes multiple material transmission units 21, feed inlet 22 and discharge port 23;
Multiple material transmission units 21 are vertically staggered in the layer structure inside the cabinet 1, adjacent The conveying directions of two material transmission units 21 on the contrary, the material transmission unit 21 include two drive rolls 211, it is multiple Driven voller 212 and conveyer belt 213, two drive rolls 211 are respectively arranged on the head and the tail both ends of the conveyer belt 213 for providing Power, multiple driven vollers 212 are set between two drive rolls 211, multiple for the conveyer belt 213 to be arranged to Section of climbing and multiple vertical descending brancies, the two neighboring climbing section are connected by the vertical descending branch, the vertical decline The minimum point of section is transmitted band 213 by locating rod and positions, and the locating rod is connect by locating pin with belt locating button;
The feed inlet 22 is set to the side on 1 top of cabinet, and is located at material transmission unit 21 1 described in top layer The top at end;
The discharge port 23 is set to the side of 1 bottom end of cabinet, and is located at material transmission unit 21 1 described in lowest level The lower section at end;
The air transport device 3 is used to provide dried medium to the inside of the cabinet 1, including successively by pipeline connection Air inlet adjustment valve 31, blower 32, air filter 33, dehumidifier 34 and heater 35, the heater 35 connect the air inlet Mouth 12.
The course of work of above-mentioned polytetrafluoroethyldispersion dispersion resin drying equipment: when work, by water content after dehydration 5~ 20% material is passed to by feed inlet 22, and material is conveyed back and forth on the conveyer belt 213 being located in layer structure, most Zhongdao Up to the discharge port 23 of the bottom, during this period, material promotes the object of bottom in being realized in climbing section and vertical descending branch from stirring Material is put into surface, and external air is pumped by blower 32, obtains height after air filter 33, dehumidifier 34 and heater 35 The pure air of warm low humidity, pure air dosage are adjusted by 32 revolving speed of blower, and gas/material is than controlling 5~20, then by case The air inlet 12 of 1 bottom end of body, which enters after cabinet 1 carries out dry materials, to be discharged, and with material whole process reverse flow, it is dry to meet post-processing It is dry to ensure product cleanliness while need.
Seen from the above description, it is dry that the beneficial effects of the present invention are: polytetrafluoroethyldispersion dispersion resins provided by the invention Dry equipment makes the vertical descending branch of dewatered wet PTFE dispersion resin material on a moving belt realize that material gravity stirs certainly, Low layer material is promoted to translate into surface layer, it is continuous that drying time is greatly shortened from stirring drying, it is dry with same 1 ton/batch of specification Dry baking oven compares, and is foreshortened within 4 hours within 24 hours between dry 1 ton hour by current industry, and critical moisture content is greatly reduced, object Material water content can be reduced to 0.02%, and current country PTFE dispersion resin product water content is 0.04%, and entire drying process is equal For the free evaporation process of convection current, is freely evaporated by convection current and temperature is greatly reduced to 120 ± 20 DEG C, current country PTFE dispersion About 200 ± 20 DEG C of resin drying temperature.
Further, adjusting rod is arranged in the driven voller 212, and the adjusting rod is worn outside the cabinet 1.
Seen from the above description, by the design of adjusting rod so that operator can climb to conveyer belt the height of section into Row is adjusted, to expand use scope of the invention, is suitable for more products.
Further, hand regulator 2121 is arranged in the one end of the adjusting rod outside the cabinet 1, and the adjuster is matched Set graduated scale 2122.
Seen from the above description, by the design of graduated scale, operator is more accurate for the adjustment of the gradient, and is convenient for The unified gradient.
Further, the cabinet 1 where the feed inlet 22 is equipped with limit wind intercommunicating pore, the upper edge of the limit wind intercommunicating pore 5~10mm of zone face away from the conveyer belt 213.
Seen from the above description, by cabinet be arranged limit wind intercommunicating pore, the material scraper at feed inlet can be divided it is thin, Ensure that thin uniform layer is fed, it is dry to be conducive to Quick uniform.
Further, the air filter 33 includes primary filter, medium effeciency filter and high efficiency particulate air filter.
Seen from the above description, by the use of elementary, middle and high filter, guarantee the cleaning of dried medium, and be conducive to Air recycles, energy conservation and environmental protection.
Further, the gas outlet 11 is equipped with gas exhausting valve and return-air control valve, and the return-air control valve passes through pipe Road is connected to the medium effeciency filter.
It seen from the above description, can be according to practical dry by going out return-air control valve and gas exhausting valve is arranged in gas outlet Dry progress gradually reduces capacity, and part pure air is recycled, and plays the role of energy-saving and environment-friendly.
Further, flow control valve is equipped at the feed inlet 22.
Seen from the above description, by flow control valve, the input of material can be adjusted according to actual production process, one As control in 100~500kg/h.
Further, the two sides of the conveyer belt 213 are equipped with the side turned back inwards.
Seen from the above description, by the way that side is arranged on a moving belt, it can prevent material from falling in conveyer belt traveling process It falls.
Further, the conveyer belt 213 presses and smooth mill processing by surface in advance.
Seen from the above description, mill processing is pressed and smooth by the surface of conveyer belt in advance, dispersion resin can be prevented to be adhered to conveyer belt On, to influence drying effect.
Embodiment one:
A kind of polytetrafluoroethyldispersion dispersion resin, including cabinet 1, multiple groups drying device 2 arranged side by side and air delivery dress Set 3;The inside of the cabinet 1 is the layer structure of connection, and the side on 1 top of cabinet is equipped with multiple gas outlets 11, described The side of 1 bottom end of cabinet is equipped with multiple air inlets 12;The drying device 2 includes multiple material transmission units 21, feed inlet 22 With discharge port 23;Multiple material transmission units 21 are vertically staggered in the layer structure inside the cabinet 1, adjacent Two material transmission units 21 conveying direction on the contrary, the material transmission unit 21 includes two drive rolls 211, more A driven voller 212 and conveyer belt 213, two drive rolls 211 are respectively arranged on the head and the tail both ends of the conveyer belt 213 for mentioning For power, multiple driven vollers 212 are set between two drive rolls 211, more for the conveyer belt 213 to be arranged to A climbing section and multiple vertical descending brancies, the two neighboring climbing section are connected by the vertical descending branch, it is described it is vertical under The minimum point of drop section is transmitted band 213 by locating rod and positions, and the locating rod is connect by locating pin with belt locating button;Institute The side that feed inlet 22 is set to 1 top of cabinet is stated, and is located at the top of 21 one end of material transmission unit described in top layer;Institute The side that discharge port 23 is set to 1 bottom end of cabinet is stated, and is located at the lower section of 21 one end of material transmission unit described in lowest level;Institute It states air transport device 3 to be used to provide dried medium to the inside of the cabinet 1, including the air inlet adjustment valve successively connected by pipeline 31, blower 32, air filter 33, dehumidifier 34 and heater 35, the heater 35 connect the air inlet 12.Further , adjusting rod is arranged in the driven voller 212, and the adjusting rod is worn outside the cabinet 1;The adjusting rod is in the cabinet 1 Hand regulator 2121, the regulator configuration graduated scale 2122 is arranged in outer one end;On cabinet 1 where the feed inlet 22 Equipped with limit wind intercommunicating pore, the upper edge of the limit wind intercommunicating pore is away from 5~10mm of zone face of the conveyer belt 213;The air filtration Device 33 includes primary filter, medium effeciency filter and high efficiency particulate air filter;The gas outlet 11 is equipped with gas exhausting valve and return-air control Valve processed, the return-air control valve are connected to the medium effeciency filter by pipeline;Flow control valve is equipped at the feed inlet 22;Institute The two sides for stating conveyer belt 213 are equipped with the side turned back inwards;The conveyer belt 213 presses and smooth mill processing by surface in advance.
In conclusion polytetrafluoroethyldispersion dispersion resin drying equipment provided by the invention, makes dewatered wet PTFE dispersion The vertical descending branch of resin material on a moving belt realizes that material gravity from stirring, promotes low layer material to translate into surface layer, continuously From stirring drying, drying time is greatly shortened, compared with the drying oven of same 1 ton/batch of specification, by working as between dry 1 ton hour Preceding industry foreshortens within 4 hours for 24 hours, and critical moisture content is greatly reduced, and material water content can be reduced to 0.02%, when Preceding country PTFE dispersion resin product water content is 0.04%, and entire drying process is the free evaporation process of convection current, by right Stream freely evaporates, and temperature is greatly reduced to 120 ± 20 DEG C, current about 200 ± 20 DEG C of PTFE dispersion resin drying temperature of the country; By the design of adjusting rod, so that operator can climb to conveyer belt, the height of section is adjusted, to expand of the invention Use scope is suitable for more products;By the design of graduated scale, operator is more accurate for the adjustment of the gradient, and Convenient for the unified gradient;By the way that limit wind intercommunicating pore is arranged on cabinet, the material scraper at feed inlet can be divided thin, it is ensured that uniformly thin Layer charging, it is dry to be conducive to Quick uniform;By the use of elementary, middle and high filter, guarantee the cleaning of dried medium, and has Conducive to recycling for air, energy conservation and environmental protection;It, can be according to reality by going out return-air control valve and gas exhausting valve is arranged in gas outlet The dry progress in border gradually reduces capacity, and part pure air is recycled, and plays the role of energy-saving and environment-friendly;Pass through Flow control valve can adjust the input of material, general control is in 100~500kg/h according to actual production process;By Side is set on conveyer belt, can prevent material from falling in conveyer belt traveling process;Mill processing is pressed and smooth in advance by the surface of conveyer belt, Dispersion resin can be prevented to be adhered on conveyer belt, to influence drying effect.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair Equivalents made by bright specification and accompanying drawing content are applied directly or indirectly in relevant technical field, similarly include In scope of patent protection of the invention.

Claims (9)

1. a kind of polytetrafluoroethyldispersion dispersion resin drying equipment, which is characterized in that the dry dress being arranged side by side including cabinet, multiple groups It sets and air transport device;
The inside of the cabinet is the layer structure of connection, and the side on the cabinet top is equipped with multiple gas outlets, the cabinet The side of bottom end is equipped with multiple air inlets;
The drying device includes multiple material transmission units, inlet port and outlet port;
Multiple material transmission units in the layer structure of the box house in being vertically staggered, described in adjacent two The conveying direction of material transmission unit on the contrary, the material transmission unit includes two drive rolls, multiple driven vollers and conveyer belt, The head and the tail both ends that two drive rolls are respectively arranged on the conveyer belt are used to provide power, and multiple driven vollers are set to two It is two neighboring described for the conveyer belt to be arranged to multiple climbing sections and multiple vertical descending brancies between the drive roll Section of climbing is connected by the vertical descending branch, and the minimum point of the vertical descending branch is transmitted band positioning, institute by locating rod Locating rod is stated to connect by locating pin with belt locating button;
The feed inlet is set to the side on the cabinet top, and is located at the top of material transmission unit one end described in top layer;
The discharge port is set to the side of the cabinet bottom end, and is located at the lower section of material transmission unit one end described in lowest level;
The air transport device is used to provide dried medium to the box house, including the air inlet tune successively connected by pipeline Valve, blower, air filter, dehumidifier and heater are saved, the heater connects the air inlet.
2. polytetrafluoroethyldispersion dispersion resin drying equipment according to claim 1, which is characterized in that the driven voller setting Adjusting rod, the adjusting rod are worn outside the cabinet.
3. polytetrafluoroethyldispersion dispersion resin drying equipment according to claim 2, which is characterized in that the adjusting rod is in institute State one end setting hand regulator outside cabinet, the regulator configuration graduated scale.
4. polytetrafluoroethyldispersion dispersion resin drying equipment according to claim 1, which is characterized in where the feed inlet Cabinet be equipped with limit wind intercommunicating pore, it is described limit wind intercommunicating pore upper edge away from 5~10mm of zone face of the conveyer belt.
5. polytetrafluoroethyldispersion dispersion resin drying equipment according to claim 1, which is characterized in that the air filter Including primary filter, medium effeciency filter and high efficiency particulate air filter.
6. polytetrafluoroethyldispersion dispersion resin drying equipment according to claim 1, which is characterized in that the gas outlet is equipped with Gas exhausting valve and return-air control valve, the return-air control valve are connected to the medium effeciency filter by pipeline.
7. polytetrafluoroethyldispersion dispersion resin drying equipment according to claim 1, which is characterized in that set at the feed inlet There is flow control valve.
8. polytetrafluoroethyldispersion dispersion resin drying equipment according to claim 1, which is characterized in that the two of the conveyer belt Side is equipped with the side turned back inwards.
9. polytetrafluoroethyldispersion dispersion resin drying equipment according to claim 1, which is characterized in that the conveyer belt passes through Mill processing is pressed and smooth in advance in surface.
CN201811558658.9A 2018-12-19 2018-12-19 A kind of polytetrafluoroethyldispersion dispersion resin drying equipment Pending CN109702925A (en)

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Application Number Priority Date Filing Date Title
CN201811558658.9A CN109702925A (en) 2018-12-19 2018-12-19 A kind of polytetrafluoroethyldispersion dispersion resin drying equipment

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Application Number Priority Date Filing Date Title
CN201811558658.9A CN109702925A (en) 2018-12-19 2018-12-19 A kind of polytetrafluoroethyldispersion dispersion resin drying equipment

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CN109702925A true CN109702925A (en) 2019-05-03

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US5135380A (en) * 1989-05-01 1992-08-04 Akebono Brake Industry Co., Ltd. Supply device for supplying friction material to devolatizing device
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US5135380A (en) * 1989-05-01 1992-08-04 Akebono Brake Industry Co., Ltd. Supply device for supplying friction material to devolatizing device
WO2007079220A2 (en) * 2005-12-30 2007-07-12 Phelps Calvin E Gas phase particulate filter house
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CN107957179A (en) * 2017-11-08 2018-04-24 兰州大学淮安高新技术研究院 Arch bridge ladder conveying type tunnel drier

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