CN202675811U - Energy-saving drying machine - Google Patents
Energy-saving drying machine Download PDFInfo
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- CN202675811U CN202675811U CN 201220284279 CN201220284279U CN202675811U CN 202675811 U CN202675811 U CN 202675811U CN 201220284279 CN201220284279 CN 201220284279 CN 201220284279 U CN201220284279 U CN 201220284279U CN 202675811 U CN202675811 U CN 202675811U
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Abstract
The utility model relates to an energy-saving drying machine which comprises a drying hopper, a vortex separating device, a feeding hopper, a vacuumizing device, an air moisture filtering device, an air heating device and a hot air pressurizing device, wherein the vacuumizing device, the air moisture filtering device, the air heating device and the hot air pressurizing device are connected in sequence. An air outlet is arranged above the drying hopper, an air inlet is arranged below the drying hopper, the vacuumizing device is connected with the air outlet, the hot air pressurizing device is connected with the air inlet, and the feeding hopper is connected between the air inlet and the hot air pressurizing device. The vortex separating device is arranged in the drying hopper and comprises a spiral ascending guide chute, and the air inlet is opposite to the lower end of the guide chute. The energy-saving drying machine has the advantages that materials are difficult to accumulate, agglomerate and decompose, drying effect is good, drying efficiency is high, energy consumption is effectively reduced and drying time is shortened.
Description
Technical field
The utility model relates to technical field of plastic, particularly a kind of energy-saving dryer.
Background technology
Drying machine is a kind of plant equipment of utilizing heat energy to reduce material moisture, is used for material is carried out drying process.Drying machine overflows hygroscopic water (referring generally to moisture or other volatile liquid components) vaporization in the material by heating, to obtain the solid material of regulation moisture content.Dry purpose is the needs that use or further process for material.
A lot of for the plant equipment type of carrying out drying process, can be divided into normal pressure and decompression (pressure Reduction Dryer also claims vacuum drier) according to operating pressure.Can be divided into batch (-type) and continous way according to method of operating.Can be divided into air, flue gas or other drying mediums according to drying medium.Can be divided into and flow adverse current and cross-flow according to motion (material moves with drying medium and flows) mode.Press mode of heating, drying machine is divided into the types such as convection type, conduction-type, radiant type, dielectric cleaning.Countercurrent drier claims again direct dryer, is to utilize the drying medium of heat directly to contact with wet stock, with the convection type transferring heat, and the steam of generation is taken away; The conduction-type drying machine claims again indirect dryer, it utilizes conduction pattern to pass through the metal partition to the wet stock transferring heat by thermal source, and the hygroscopic water steam of generation can aspirate, pass into a small amount of sweep gas or remove in the methods such as low-temperature condenser surface condensation that arrange separately with decompression.This drier does not use drying medium, and the thermal efficiency is higher, and product is not contaminated, but drying capacity is subjected to the restriction of metallic walls heat transfer area, and structure is also complicated, operates under the vacuum of being everlasting; Radiation-type dryer is to utilize various radiators to launch the electromagnetic wave of certain wave-length coverage, changes heat into after being absorbed selectively by the wet stock surface and carries out drying; The dielectric cleaning drying machine is to utilize the high-frequency electric field effect, makes the inner fuel factor that occurs of wet stock carry out drying.
The plastic processing industry the most frequently used be the normal pressure countercurrent drier, namely add hot-air after, directly contact with wet stock by hot-air, with the convection type transferring heat, and the steam that generates taken away.In the use procedure of normal pressure countercurrent drier, owing to be to use the hot air dries material, material is deposited in for a long time the bottom and is taper, and the top is in the hydrostatic column.This drying mode causes easily hot-spot to cause the material caking or decomposes, more particularly hold labile plastics, such as PVC etc., solid accumulation causes drying efficiency lower in container simultaneously, the material that contacts first with nascent dry air is dried first, the material of rear contact causes the dry materials time in the container elongated because dry air has been mingled with some steam.Particularly to the demanding occasion of some moistures, this kind drying mode causes drying efficiency extremely low.
The utility model content
For the technical problem that exists in the prior art, the purpose of this utility model is: providing a kind of can carry out preliminarily dried to material, Effective Raise drying efficiency, the energy-saving dryer of reduction energy consumption.
In order to achieve the above object, the utility model adopts following technical scheme:
A kind of energy-saving dryer comprises drying hopper, and it also comprises cyclone separator, reinforced hopper and the vacuum extractor that joins successively, air moisture filter, air heating apparatus and hot-air pressue device; The drying hopper top is provided with the gas outlet, and the below is provided with air inlet; Vacuum extractor picks out gas port, and the hot-air pressue device taps into gas port, and reinforced hopper is connected between air inlet and the hot-air pressue device; Cyclone separator is located in the drying hopper, comprises spiralling deflector chute; Air inlet is facing to the lower end of deflector chute.After adopting this structure, vacuum extractor extracts air with recycling out from drying hopper, makes simultaneously to keep certain negative pressure in the drying hopper; The airborne moisture of air moisture filter elimination obtains dry gas; Air heating apparatus adds hot-air, further removes airborne moisture and also prepares for follow-up dried material; The hot-air pressue device increases air pressure, is convenient to the convection current air material high-speed is sprayed; Material rises in deflector chute high speed rotation under the effect of high pressure, drying, convection of heat air, realizes separating of preliminary solid and gas-liquid, namely realizes preliminary drying, Effective Raise drying efficiency, reduction energy consumption.
The sidewall of drying hopper is provided with the interlayer that passes through for the convection current air, has exhaust outlet on the inwall of interlayer; Air inlet is facing to the lower end of interlayer.After adopting this structure, the convection current air is from a plurality of exhaust outlets ejection of drying hopper, and exhaust outlet spreads all over the sidewall of drying hopper, can realize even dried material, and traditional mode can only partial exhaust gas, and therefore traditional mode uneven drying is even.
Drying hopper comprises spherical hopper, cylindrical hopper and the back taper hopper that sets gradually from top to bottom; Interlayer is positioned on cylindrical hopper and the back taper hopper, and the quantity of the exhaust outlet on the back taper hopper is greater than the quantity of the exhaust outlet on the cylindrical hopper.After adopting this structure, namely the below arranges more exhaust outlet, can carry out to the below material drying of emphasis, avoids the below dry materials not thorough.The drying hopper top arranges spherical hopper, and can to avoid humid air to stop at the hopper top long-time, is beneficial to the circulation of heated drying air.
The lower end of drying hopper is provided with discharge valve; Air inlet has more than two, be distributed on discharge valve around; Be provided with the Matter Transfer valve between the inwall of interlayer and the cyclone separator; Charging valve is equipped with in the outlet of reinforced hopper.After adopting this structure, under the effect of convection current air, material can be in the inside and outside continuous circulation of cyclone separator, and in the drying hopper, the material of lower floor arrives the upper strata through circulation, material can not occur stacking, all materials all can contact fully with the convection current air of exhaust outlet ejection, realize fully drying, effectively avoid material to lump because drying is insufficient, improve drying efficiency, reduce energy consumption.
The groove depth of deflector chute reduces gradually along with the increase of spiral lifting height, the cross section of deflector chute is circular arc, the diameter R of circular arc reduces gradually along with the increase of spiral lifting height, and the secant L of circular arc increases gradually along with the increase of spiral lifting height, L＜R.After adopting this structure, deflector chute below diameter is large and the top diameter is little, and material accelerates in uphill process gradually, and material can reach with fast state the effect of good solid and gas-liquid separation, realizes preliminarily dried.Groove depth is the degree of depth of deflector chute.
Cyclone separator has a plurality of, near the middle part that is arranged in drying hopper.After adopting this structure, namely a plurality of cyclone separators near, be set up in parallel, material is dispersed to a plurality of cyclone separators, avoids material stacking, can obtain better preliminarily dried effect; When material carries out circulation time, more can accelerate the circulation rate of material.
Be provided with filter screen between the top of deflector chute and the gas outlet.After adopting this structure, filter screen can stop the material that upwards flies out from deflector chute, avoids material to be evacuated device and extracts damage equipment out.
The air moisture filter comprises: the molecular sieve that is used for absorbing air moisture; Dew point detector for detection of the gas dew point of giving vent to anger of air moisture filter; According to the testing result of dew point detector, with the nonconforming air return controller of gas backstreaming to molecular sieve of giving vent to anger.After adopting this structure, dew point detector detects in real time to the gas of giving vent to anger, and to being lower than the gas of giving vent to anger of setting dew point value, being back to molecular sieve by the control of air return controller and re-starting moisture filter, and the gas that guarantees to give vent to anger has stable low water content.
The course of work of energy-saving dryer is as follows: comprise the steps: that a. opens vacuum extractor, air moisture filter, air heating apparatus and hot-air pressue device successively, obtains high pressure, drying, convection of heat air; Close the Matter Transfer valve; Adding material in reinforced hopper is opened charging valve; B. material is blown in the cyclone separator by the convection current air, rises along the deflector chute High Rotation Speed, by preliminarily dried, is thrown in the drying hopper again; The convection current air enters the interlayer of drying hopper simultaneously, and the exhaust outlet of offering on the inwall by interlayer is discharged with dried material; Vacuum extractor is taken the air in the drying hopper away so that keep the certain vacuum degree in the drying hopper simultaneously; C. after material accumulates some in drying hopper, close charging valve and stop to feed in raw material, open the Matter Transfer valve, material constantly enters and leaves cyclone separator, is recycled convective drying in drying hopper; D. after material moisture reaches dry demand, close down successively vacuum extractor, air moisture filter, air heating apparatus and hot-air pressue device, open at last the discharge valve blowing.After adopting this method, avoid material to spare or caking because of the stacking uneven drying that causes, effectively guarantee the abundant drying of material, improve the drying efficiency of material, reduce energy consumption.
Among the step b, the vacuum in the drying hopper is-0.08～-0.04Mpa; Among the step c, material is just closed charging valve after being full of at the most drying hopper 2/3rds volumes; In the air moisture filter operation, detect in real time the dew point of air behind the moisture filter, then normally be expelled to air heating apparatus if be lower than setting value, then return the air moisture filter and carry out moisture filter if be higher than setting value.After adopting this method, effectively guarantee drying effect.
Generally speaking, the utlity model has following advantage: for the demand of plastic processing industry dry materials, can realize preliminarily dried, cyclic drying; Convection gas is given vent to anger evenly, and can fully contact with material; Material is not easy to pile up caking and decomposes, and drying effect is good, and drying efficiency is high, effectively reduces energy consumption, reduces drying time.
Description of drawings
Fig. 1 is the structural representation of energy-saving dryer.
Fig. 2 is the schematic diagram of drying hopper.
Fig. 3 is the schematic diagram of cyclone separator.
Fig. 4 is the profile of the deflector chute of cyclone separator.
Fig. 5 is the schematic diagram of moisture filter device.
Wherein, 1 is drying hopper, and 2 is cyclone separator, 3 is vacuum extractor, and 4 is the air moisture filter, and 5 is air heating apparatus, 6 is the hot-air pressue device, and 7 are reinforced hopper, and 8 is discharge valve, 9 is charging valve, and 10 is the Matter Transfer valve, and 11 is air inlet, 12 is the gas outlet, and 13 is exhaust outlet, and 14 is deflector chute, 15 is dew point detector, and 16 is molecular sieve, and 17 is the air return controller.
The specific embodiment
The utility model is described in more detail below in conjunction with the drawings and specific embodiments.
A kind of energy-saving dryer comprises drying hopper, cyclone separator, reinforced hopper and the vacuum extractor that joins successively, air moisture filter, air heating apparatus and hot-air pressue device.
Drying hopper comprises spherical hopper, cylindrical hopper and the back taper hopper that sets gradually from top to bottom; Cylindrical hopper and back taper hopper are provided with the interlayer that passes through for the convection current air, and the inwall of interlayer is provided with the exhaust outlet for the convection current Bas Discharged, and the quantity of the exhaust outlet on the back taper hopper is greater than the quantity of the exhaust outlet on the cylindrical hopper.The drying hopper top is provided with the gas outlet, and the below is provided with air inlet; Vacuum extractor picks out gas port, and the hot-air pressue device taps into gas port.Air inlet, is discharged from exhaust outlet so that the convection current air can enter from the lower end of interlayer in the interlayer facing to the lower end of interlayer again.The concrete quantity of exhaust outlet and diameter can design according to the practical structures of selected drying hopper, can be not of uniform size.In general, exhaust outlet should be less than the size of material, avoids material to enter in the interlayer from exhaust outlet, also can select bigger exhaust outlet, and cover filter screen at exhaust outlet.The lower end of drying hopper is provided with discharge valve; Air inlet has two, is arranged symmetrically in the both sides of discharge valve.The drying hopper volume is 2000L, and it is 50 that the inwall of the interlayer of cylindrical hopper arranges exhaust outlet, and it is 100 that the inwall of the interlayer of back taper hopper arranges exhaust outlet, and the diameter of exhaust outlet is 10mm.
Cyclone separator has a plurality of, near the central region that is arranged around drying hopper.Each cyclone separator comprises spiralling deflector chute, the groove depth of deflector chute reduces gradually along with the increase of spiral lifting height, the cross section of deflector chute is circular arc, the diameter R of circular arc reduces gradually along with the increase of spiral lifting height, the secant L of circular arc increases gradually along with the increase of spiral lifting height, L＜R.Air inlet guarantees that facing to the lower end of deflector chute convection gas can blow into deflector chute with material.Be provided with filter screen between the top of deflector chute and the gas outlet, filter screen order number is preferably 50～100 orders, is 60 orders herein.Be provided with the Matter Transfer valve between the inwall of interlayer and the cyclone separator, when closing the Matter Transfer valve, material can not enter from the drying hopper below below of cyclone separator, and when opening the Matter Transfer valve, material enters the below of cyclone separator from the drying hopper below.The quantity of cyclone separator can be according to the drying capacity setting of energy-saving dryer.The height that deflector chute rises is 3/4 of drying hopper height, and the diameter of deflector chute bottom circular arc is 100mm, and the secant diameter of circular arc is 40mm, and the diameter of deflector chute top circular arc is 70mm, and the secant diameter of circular arc is 60mm.
Reinforced hopper is connected between air inlet and the hot-air pressue device.Charging valve is equipped with in the outlet of reinforced hopper, and whether the control material enters drying hopper.The structure of reinforced hopper is back taper.
Vacuum extractor adopts vavuum pump, and product type is the many sliding vane rotary vacuum pumps of SV single-stage, and this vacuum extractor is equipped with the vacuum dust filter unit.
The air moisture filter comprises: molecular sieve, dew point detector and air return controller.Molecular sieve is used for absorbing air moisture; Dew point detector is for detection of the gas dew point of giving vent to anger of air moisture filter; The air return controller can according to the testing result of dew point detector, with the nonconforming gas backstreaming of giving vent to anger to molecular sieve.The dew point of dew point detector can preset.Behind the air process air moisture filter, water content reduces greatly, obtains dry air.
Air heating apparatus is comprised of heating tube and the thermally insulating housing of some, and the quantity of concrete heating tube designs according to the practical structures of selected heater, and heating tube quantity is 50 in the present embodiment.Air is heated to form hot-air after installing through this, and is further dry simultaneously, reduces water content.
The hot-air pressue device is by booster fan, and pressure detecting adjusting device and thermally insulating housing form, and the hot-air pressue device is connected with cyclone separator with drying hopper.Air is vomitted through this device, and is pressurized, finally obtains high pressure, drying, convection of heat air.
Adopt tube connector to join between each device, tube connector adopts heat-insulating heat-preserving material to make.
Energy-saving drying method comprises the steps: that a. opens vacuum extractor, air moisture filter, air heating apparatus and hot-air pressue device successively, obtains the convection current air; Close the Matter Transfer valve; Adding material in reinforced hopper is opened charging valve; B. material is blown in the cyclone separator by the convection current air, rises along the deflector chute High Rotation Speed, by preliminarily dried, is thrown in the drying hopper again; The convection current air enters the interlayer of drying hopper simultaneously, and the exhaust outlet of offering on the inwall by interlayer is discharged with dried material; Simultaneously vacuum extractor take away in the drying hopper air so that the vacuum keep in the drying hopper-0.08～-0.04Mpa; C. after material is full of drying hopper 2/3rds volumes, closes charging valve and stop to feed in raw material, open the Matter Transfer valve, material constantly enters and leaves cyclone separator, is recycled convective drying in drying hopper; D. after material moisture reaches dry demand, close down successively vacuum extractor, air moisture filter, air heating apparatus and hot-air pressue device, open at last the discharge valve blowing.
In the air moisture filter operation, detect in real time the dew point of air behind the moisture filter, then normally be expelled to air heating apparatus if be lower than setting value, then return the air moisture filter and carry out moisture filter if be higher than setting value.
As mentioned above, just can realize preferably the utility model, above-described embodiment is preferred embodiment of the present utility model only, is not to limit practical range of the present utility model; Be that all equalizations of doing according to the utility model content change and modification, all contained by the utility model scope required for protection.
Claims (8)
1. an energy-saving dryer comprises drying hopper, it is characterized in that: it also comprises cyclone separator, reinforced hopper and the vacuum extractor that joins successively, air moisture filter, air heating apparatus and hot-air pressue device; The drying hopper top is provided with the gas outlet, and the below is provided with air inlet; Vacuum extractor picks out gas port, and the hot-air pressue device taps into gas port, and reinforced hopper is connected between air inlet and the hot-air pressue device; Cyclone separator is located in the drying hopper, comprises spiralling deflector chute; Air inlet is facing to the lower end of deflector chute.
2. according to energy-saving dryer claimed in claim 1, it is characterized in that: the sidewall of described drying hopper is provided with the interlayer that passes through for the convection current air, has exhaust outlet on the inwall of interlayer; Air inlet is facing to the lower end of interlayer.
3. according to energy-saving dryer claimed in claim 2, it is characterized in that: described drying hopper comprises spherical hopper, cylindrical hopper and the back taper hopper that sets gradually from top to bottom; Interlayer is positioned on cylindrical hopper and the back taper hopper, and the quantity of the exhaust outlet on the back taper hopper is greater than the quantity of the exhaust outlet on the cylindrical hopper.
4. according to energy-saving dryer claimed in claim 2, it is characterized in that: the lower end of described drying hopper is provided with discharge valve; Air inlet has more than two, be distributed on discharge valve around; Be provided with the Matter Transfer valve between the inwall of interlayer and the cyclone separator; Charging valve is equipped with in the outlet of reinforced hopper.
5. according to energy-saving dryer claimed in claim 1, it is characterized in that: the groove depth of described deflector chute reduces gradually along with the increase of spiral lifting height, the cross section of deflector chute is circular arc, the diameter R of circular arc reduces gradually along with the increase of spiral lifting height, the secant L of circular arc increases gradually along with the increase of spiral lifting height, L＜R.
6. according to energy-saving dryer claimed in claim 1, it is characterized in that: described cyclone separator has a plurality of, near the middle part that is arranged in drying hopper.
7. according to energy-saving dryer claimed in claim 1, it is characterized in that: be provided with filter screen between the top of described deflector chute and the gas outlet.
8. according to each described energy-saving dryer in the claim 1 to 7, it is characterized in that: described air moisture filter comprises:
-be used for the molecular sieve of absorbing air moisture,
-for detection of the dew point detector of the gas dew point of giving vent to anger of air moisture filter,
-according to the testing result of dew point detector, with the nonconforming air return controller of gas backstreaming to molecular sieve of giving vent to anger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220284279 CN202675811U (en) | 2012-06-15 | 2012-06-15 | Energy-saving drying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220284279 CN202675811U (en) | 2012-06-15 | 2012-06-15 | Energy-saving drying machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202675811U true CN202675811U (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220284279 Withdrawn - After Issue CN202675811U (en) | 2012-06-15 | 2012-06-15 | Energy-saving drying machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN202675811U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706111A (en) * | 2012-06-15 | 2012-10-03 | 广州市合诚化学有限公司 | Energy-saving drying machine and energy-saving drying method |
| CN104374170A (en) * | 2014-10-16 | 2015-02-25 | 广西玉林宏江能源科技有限公司 | Energy-saving drying machine for five cereals |
-
2012
- 2012-06-15 CN CN 201220284279 patent/CN202675811U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706111A (en) * | 2012-06-15 | 2012-10-03 | 广州市合诚化学有限公司 | Energy-saving drying machine and energy-saving drying method |
| CN102706111B (en) * | 2012-06-15 | 2014-05-07 | 广州市合诚化学有限公司 | Energy-saving drying machine and energy-saving drying method |
| CN104374170A (en) * | 2014-10-16 | 2015-02-25 | 广西玉林宏江能源科技有限公司 | Energy-saving drying machine for five cereals |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130116 Effective date of abandoning: 20140507 |
|
| RGAV | Abandon patent right to avoid regrant |