CN116734580A - Rotary vacuum dryer - Google Patents
Rotary vacuum dryer Download PDFInfo
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- CN116734580A CN116734580A CN202310503587.7A CN202310503587A CN116734580A CN 116734580 A CN116734580 A CN 116734580A CN 202310503587 A CN202310503587 A CN 202310503587A CN 116734580 A CN116734580 A CN 116734580A
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- tank body
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- water
- cooling water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 130
- 239000000463 material Substances 0.000 claims abstract description 104
- 239000000498 cooling water Substances 0.000 claims abstract description 96
- 238000010438 heat treatment Methods 0.000 claims abstract description 54
- 238000001035 drying Methods 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000009834 vaporization Methods 0.000 claims abstract description 12
- 230000008016 vaporization Effects 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 6
- 239000002352 surface water Substances 0.000 claims abstract description 6
- 238000005192 partition Methods 0.000 claims description 25
- 238000005485 electric heating Methods 0.000 claims description 18
- 239000008236 heating water Substances 0.000 claims description 18
- 230000007246 mechanism Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000002826 coolant Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 238000011010 flushing procedure Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 238000001291 vacuum drying Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 19
- 238000001816 cooling Methods 0.000 description 12
- 238000004891 communication Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 10
- 239000011229 interlayer Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000002516 radical scavenger Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000003828 vacuum filtration Methods 0.000 description 2
- OXUQOKIBNYSTGF-UHFFFAOYSA-L calcium;3-hydroxybutanoate Chemical compound [Ca+2].CC(O)CC([O-])=O.CC(O)CC([O-])=O OXUQOKIBNYSTGF-UHFFFAOYSA-L 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
- F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
- F26B11/0445—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having conductive heating arrangements, e.g. heated drum wall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D1/00—Devices using naturally cold air or cold water
- F25D1/02—Devices using naturally cold air or cold water using naturally cold water, e.g. household tap water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
- F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses rotary vacuum drying, a circulating heating system is used for preheating materials, the vaporization amount of moisture in the materials is small in the preheating process, a double-cone tank body rotates at a high rotation speed of 6 revolutions per minute, and the stage is used for rapidly heating the materials; after the material is preheated, the moisture in the material begins to be vaporized in a large quantity, the double-cone tank body rotates at a low rotation speed of 2-4 r/min, free water and surface water in the material are dried at the stage, and the phenomenon that the material is bonded and agglomerated due to the fact that the vaporization speed of the moisture is too high is avoided; when the surface of the material is dry and is not easy to bond and agglomerate, the heating temperature of the circulating heating system is increased, the biconical tank body rotates at a medium-high rotation speed of 4-6 rpm, and the moisture in the material is dried at the stage, so that the drying speed is increased, and the drying time is shortened until the drying is completed; the circulating heating system provides cooling water to circularly cool the materials, so that the temperature of the materials in the double-cone tank body is reduced, and the dried materials can be discharged.
Description
Technical Field
The invention relates to the field of drying equipment, in particular to a rotary vacuum dryer.
Background
The rotary vacuum dryer is widely applicable to drying of powder and granular (including crystalline) materials in the industries of pharmacy, chemical industry, food, dye, powder metallurgy and the like. The heat energy (such as hot water, low-pressure steam or heat conducting oil) is introduced into the airtight interlayer of the tank body of the rotary vacuum dryer, the heat is transferred to the dried material through the inner shell, the tank body is driven by power to slowly rotate, and the materials in the tank body are continuously mixed, so that the aim of reinforcing drying is fulfilled; meanwhile, the rotary drying is carried out under the vacuum condition, so that the drying speed is increased, the phenomenon of yellowing of the surface of the material during drying is avoided, and the drying time of the material is greatly shortened.
For example, chinese patent with grant publication number CN208952585U and grant publication date 2019, 6 and 7 discloses a double cone rotary drying box for preparing calcium 3-hydroxybutyrate, wherein one end of the heat source layer is communicated with the heat inlet source and the other end is communicated with the condensation return pipe, so that the heat source forms a circulation along the heat inlet source, the heat source layer and the condensation return pipe, so as to ensure the heating and drying effects on materials.
After the heating and drying is completed, the temperature of the material in the rotary vacuum dryer needs to be reduced to normal temperature to realize discharging of the dried material and avoid subsequent moisture regain. However, in the above-mentioned comparative patent, only a natural cooling mode can be adopted to realize material cooling, and the natural cooling mode has the defect of slow cooling speed, and finally affects the drying efficiency.
Disclosure of Invention
The invention aims to provide a rotary vacuum dryer which has the function of improving drying efficiency.
The technical aim of the invention is realized by the following technical scheme: the rotary vacuum dryer comprises a machine base, a double-cone tank body, a circulating heating system, a vacuum filtering system, a power system and a control panel, wherein the double-cone tank body is rotatably connected to the machine base, the periphery of the double-cone tank body is provided with an inner layer clamping cavity and an outer layer clamping cavity, the circulating heating system is communicated to the two layers of clamping cavities of the double-cone tank body along the rotation position of one end of the double-cone tank body, the vacuum filtering system is communicated to the double-cone tank body along the rotation position of the other end of the double-cone tank body, the power system is arranged between the machine base and the rotation position of the other end of the double-cone tank body and used for driving the double-cone tank body to rotate, the control panel is arranged on the machine base, a rotary joint is arranged between the machine base and the rotation position of one end of the double-cone tank body, the rotary joint is provided with a water inlet end communicated with the inner layer clamping cavity and a water outlet end communicated with the outer layer clamping cavity, the circulating heating system comprises an electric heating water tank, a cooling water tank, a water pump, an electromagnetic three-way valve arranged at the water inlet end of the water pump, a first water supply pipe communicated between the electromagnetic three-way valve and the electric heating water tank, a second water supply pipe communicated between the electromagnetic three-way valve and the electromagnetic three-way valve, the water tank, a water inlet pipe communicated between the water inlet pipe and the water inlet pipe, a rotary joint, and a water pipe and a water outlet pipe and a water pipe;
the operation method of the circulating heating system with the rotation speed of the double-cone tank body comprises the following steps: the circulating heating system is used for preheating materials, the vaporization amount of moisture in the materials is small in the preheating process, the double-cone tank body rotates at a high rotation speed of 6 revolutions per minute, and the rapid temperature rise of the materials is realized in the stage; (S2) after the material is preheated, the moisture in the material begins to be vaporized in a large amount, the double-cone tank body rotates at a low rotation speed of 2-4 r/min, free water and surface water in the material are dried in the stage, and the phenomenon that the material is bonded and agglomerated due to the fact that the vaporization speed of the moisture is too high is avoided; (S3) when the surface of the material is dry and is not easy to be bonded and agglomerated, the heating temperature of the circulating heating system is increased, the double-cone tank body rotates at a medium-high rotating speed of 4-6 revolutions per minute, and the moisture in the material is dried at the stage, so that the drying speed is increased, and the drying time is shortened until the drying is completed; and (S4) the circulating heating system provides cooling water to circularly cool the materials, so that the temperature of the materials in the double-cone tank body is reduced, and the dried materials are discharged.
By adopting the scheme, the circulating heating system is used for preheating the materials, the vaporization amount of the moisture in the materials is small in the preheating process, the double-cone tank body rotates at a high rotation speed of 6 revolutions per minute, and the rapid temperature rise of the materials is realized in the stage; after the material is preheated, the moisture in the material begins to be vaporized in a large quantity, the double-cone tank body rotates at a low rotation speed of 2-4 r/min, free water and surface water in the material are dried at the stage, and the phenomenon that the material is bonded and agglomerated due to the fact that the vaporization speed of the moisture is too high is avoided; when the surface of the material is dry and is not easy to bond and agglomerate, the heating temperature of the circulating heating system is increased, the biconical tank body rotates at a medium-high rotation speed of 4-6 rpm, and the moisture in the material is dried at the stage, so that the drying speed is increased, and the drying time is shortened until the drying is completed; the circulating heating system provides cooling water to circularly cool the materials, so that the temperature of the materials in the double-cone tank body is reduced, and the dried materials are discharged; finally has the function of improving the drying efficiency.
The invention is further provided with: the middle part of the cooling water tank is provided with a hollow annular partition sleeve, the middle part of the cooling water tank is provided with a flow hole, the return pipe is communicated with the part of the cooling water tank above the annular partition sleeve, the overflow pipe is communicated with the part of the cooling water tank above the annular partition sleeve, and the second water supply pipe is communicated with the part of the cooling water tank below the annular partition sleeve.
Through adopting above-mentioned scheme, coolant tank is located the annular at this moment and cuts off the temperature of cover below lower, and circulation heating system provides the cooling water at the back and circulate the cooling, through the cooling effect, and coolant tank literature annular cuts off the temperature of cover top higher, and the reducible temperature that leads to the fact the influence in the electric heating water tank to the electric heating water tank of backward flow in the electric heating water tank to conveniently heat to the settlement temperature.
The invention is further provided with: the cooling water tank is characterized in that a one-way valve for limiting water to flow from the upper part to the lower part is arranged in the circulation hole, when the water below the one-way valve of the cooling water tank flows out gradually, the bottom of the one-way valve is gradually opened after no supporting force of the water, the water above the one-way valve flows to the lower part through the one-way valve, and when the water below the one-way valve of the cooling water tank is full of the water, the one-way valve is closed.
By adopting the scheme, the one-way valve is arranged to enable the cooling water tank to be located at the upper part and the lower part of the annular partition sleeve to be partitioned, so that heat exchange is reduced, water at the lower part can be cooled slowly, and the effect of circulating cooling water provided by the circulating heating system is improved; meanwhile, when the water in the lower part is lack, the water in the upper part can flow downwards through the one-way valve to be replenished.
The invention is further provided with: the annular partition sleeve is arranged in the cooling water tank in a lifting manner, limit screws are arranged on two sides of the inner wall of the cooling water tank, limit bars with waist-shaped holes sleeved on the limit screws are arranged on two sides of the upper surface of the annular partition sleeve, locking knobs used for propping against the limit bars are connected to the limit screws in a threaded manner, and rubber sealing rings propping against the inner wall of the cooling water tank are respectively embedded into the upper ends and the lower ends of the peripheral sides of the annular partition sleeve.
Through adopting above-mentioned scheme, pass spacing position and fix through locking knob through adjusting spacing screw, can realize adjusting the height of annular partition cover to the water-cooling that can renew the collection of annular partition cover top part and below part is realized, the required water yield when making the water yield of below part satisfy the cooling operation as far as possible.
The invention is further provided with: the two-cone tank body is provided with a plurality of clamping cavities communicated with an inner layer and a first communicating pipe penetrating out of the two-cone tank body near the peripheral sides of the two ends, the peripheral sides of the two-cone tank body near the two ends are provided with a plurality of clamping cavities communicated with an outer layer and a second communicating pipe penetrating out of the two-hammer tank body, the first communicating pipes and the second communicating pipes are corresponding, a U-shaped connecting pipe is arranged between the corresponding first communicating pipes and the corresponding second communicating pipes, the two ends of the connecting pipe are detachably connected with the first communicating pipes and the second communicating pipes, and the first communicating pipes, the second communicating pipes and the connecting pipe are communicated with the inner layer and the outer layer of the clamping cavities;
the scale cleaning operation method in the double-cone tank body comprises the following steps: (S1) controlling an electromagnetic three-way valve through a control panel to enable a water pump to be communicated with a cooling water tank, adding a scale remover into the cooling water tank, starting rotation of a conical tank body, and enabling water in the cooling water tank to enter two side cavity clamping inner rings in the conical tank body for 20-30 minutes in a cooling water supply mode of a circulating heating system; (S2) evacuating water in the cooling water tank, controlling an electromagnetic three-way valve through a control panel to enable the water pump to be connected with the electric heating water tank, stopping rotating the conical tank body, gradually discharging the residual water in the double-conical tank body into the cooling water tank in a mode of providing hot water through a circulating heating system, evacuating the cooling water tank if the water level in the cooling water tank is about to reach the height of an overflow pipe, and evacuating the water in the cooling water tank after circulating flushing; (S3) placing a collecting barrel below the conical tank body, and disassembling a connecting pipe below the conical tank body, so that residual water in the conical tank body is directly discharged into the collecting barrel from the connecting pipe.
By adopting the scheme, the electromagnetic three-way valve is controlled by the control panel, so that the water pump is communicated with the cooling water tank, the scale scavenger is added into the cooling water tank, the conical tank body starts to rotate, and the water in the cooling water tank enters into the inner rings of the two side clamping cavities in the conical tank body for 20-30 minutes in a mode of providing cooling water by the circulating heating system; the water in the cooling water tank is emptied, the electromagnetic three-way valve is controlled by the control panel, the water pump is connected with the electric heating water tank, the conical tank body stops rotating, the residual water in the double-conical tank body is gradually discharged into the cooling water tank in a mode of providing hot water by the circulating heating system, the cooling water tank is emptied when the water level in the cooling water tank is about to reach the height of the overflow pipe, and the water in the cooling water tank is emptied after circulating flushing; placing a collecting barrel below the conical tank body, and disassembling a connecting pipe below the conical tank body, so that residual water in the conical tank body is directly discharged into the collecting barrel from the connecting pipe; finally, the scale in the interlayer of the double-cone tank body is cleaned, and the cleaning effect on the scale can be improved.
The invention is further provided with: the automatic feeding device is characterized in that a manual valve is arranged at the discharge end of the double-cone tank body, a discharge hole is formed in the bottom of the machine base corresponding to the discharge end of the double-cone tank body, a material receiving mechanism for communicating the discharge hole with the discharge end of the double-cone tank body is arranged on the machine base, and a pipeline can be connected to the discharge hole and used for conveying materials to other equipment under the action of gravity.
The invention is further provided with: the material receiving mechanism comprises a material receiving sleeve sleeved on the discharge end of the biconical tank body after upward movement, a telescopic pipeline arranged between the lower end of the material receiving sleeve and the discharge hole, and two lifting cylinders arranged between the machine base and the material receiving sleeve and driving the material receiving sleeve to move up and down.
Through adopting above-mentioned scheme, after rotary vacuum drier's frame, the unsettled installation of bipyramid jar body, accessible lift cylinder drives the material receiving sleeve cover on the discharge end of bipyramid jar body after the drying is accomplished to make the material pass through the discharge port and discharge.
The invention is further provided with: the inner wall in the middle of the biconical tank body is corrugated.
Through adopting above-mentioned scheme, at the rotatory in-process of bipyramid jar body, the bipyramid jar body rotates to the certain angle back, and the material can slide the tip of bipyramid jar body, through the ripple form in the inner wall that makes big bipyramid jar body, can make some material be difficult for the landing to improve the spreading effect to the material, finally improve the drying effect to the material.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic view of the circulation heating system of the present invention;
FIG. 4 is a schematic view of the structure of the cooling water tank of the present invention;
fig. 5 is a partial enlarged view of fig. 1 at B.
Reference numerals: 1. a base; 11. a discharge hole; 12. a receiving mechanism; 121. a receiving sleeve; 122. a telescoping tube; 123. a lifting cylinder; 2. a double cone tank; 21. clamping a cavity; 22. a first communication pipe; 23. a second communicating pipe; 24. a connecting pipe; 25. a discharge valve; 3. a cyclic heating system; 31. an electric heating water tank; 32. a cooling water tank; 321. an annular partition sleeve; 3211. a flow hole; 322. a one-way valve; 323. a screw; 324. a limit bar; 325. a locking knob; 326. a rubber seal ring; 33. a water pump; 34. an electromagnetic three-way valve; 35. a first water supply pipe; 36. a second water supply pipe; 37. a water inlet pipe; 38. a water return pipe; 39. an overflow pipe; 4. a vacuum filtration system; 5. a power system; 6. a control panel; 7. and (5) rotating the joint.
Description of the embodiments
The present invention will be described in further detail with reference to the accompanying drawings.
Examples: the rotary vacuum dryer comprises a machine base 1, a double-cone tank body 2 which is rotationally connected to the machine base 1 and is provided with an inner layer and an outer layer of communicated clamping cavities 21 at the periphery, a circulating heating system 3 which is communicated to the two layers of clamping cavities 21 of the double-cone tank body 2 along the rotation position of one end of the double-cone tank body 2, a vacuum filtration system 4 which is communicated to the inside of the double-cone tank body 2 along the rotation position of the other end of the double-cone tank body 2, a power system 5 which is arranged between the machine base 1 and the rotation position of the other end of the double-cone tank body 2 and is used for driving the double-cone tank body 2 to rotate, and a control panel 6 which is arranged on the machine base 1, wherein a rotary joint 7 which is provided with a water inlet end communicated with the inner layer of the clamping cavities 21 and a water outlet end communicated with the outer layer of the clamping cavities 21 is arranged between the rotation position of the machine base 1 and the rotation position of the double-cone tank body 2.
As shown in fig. 1 and 2, a manual valve is arranged at the discharge end of the double-cone tank 2, a discharge hole 11 is arranged at the bottom of the machine base 1 corresponding to the discharge end of the double-cone tank 2, a material receiving mechanism 12 for communicating the discharge hole 11 with the discharge end of the double-cone tank 2 is arranged on the machine base 1, 24 pipes can be connected to the discharge hole 11, and materials can be conveyed to other equipment under the action of gravity. The receiving mechanism 12 comprises a receiving sleeve 121 which is sleeved on the discharging end of the double-cone tank body 2 after moving upwards, a telescopic pipeline 122 which is arranged between the lower end of the receiving sleeve 121 and the discharging hole 11, and two lifting cylinders 123 which are arranged between the machine base 1 and the receiving sleeve 121 and drive the receiving sleeve 121 to move up and down. Meanwhile, the inner wall of the middle part of the double-cone tank body 2 is corrugated.
As shown in fig. 1 and 3, the circulation heating system 3 includes an electric heating water tank 31, a cooling water tank 32, a water pump 33, an electromagnetic three-way valve 34 provided at a water inlet end of the water pump 33, a first water supply pipe 35 communicating between the electromagnetic three-way valve 34 and the electric heating water tank 31, a second water supply pipe 36 communicating between the electromagnetic three-way valve 34 and the cooling water tank 32, a water inlet pipe 37 communicating between a water outlet end of the water pump 33 and a water inlet end of the rotary joint 7, a water return pipe 38 communicating between the cooling water tank 32 and a water outlet end of the rotary joint 7, and an overflow pipe 39 communicating between the cooling water tank 32 and the electric heating water tank 31. The operation method of the circulating heating system 3 with the rotation speed of the double cone tank 2 comprises the following steps: (S1) a circulating heating system 3 is used for preheating materials, the vaporization amount of moisture in the materials is small in the preheating process, the double-cone tank body 2 rotates at a high rotation speed of 6 revolutions per minute, and the rapid temperature rise of the materials is realized in the stage; (S2) after the material is preheated, the moisture in the material begins to be vaporized in a large amount, the double-cone tank body 2 rotates at a low intermediate speed of 2-4 rpm, free water and surface water in the material are dried at the stage, and the phenomenon that the material is bonded and agglomerated due to the fact that the vaporization speed of the moisture is too high is avoided; (S3) when the surface of the material is dry and is not easy to be bonded and agglomerated, the heating temperature of the circulating heating system 3 is increased, the double-cone tank body 2 rotates at a medium-high rotation speed of 4-6 rpm, and the moisture in the material is dried at the stage, so that the drying speed is increased, and the drying time is shortened until the drying is completed; (S4) the circulating heating system 3 supplies cooling water to circularly cool the materials, so that the temperature of the materials in the double-cone tank body 2 is reduced, and the dried materials are discharged.
As shown in fig. 3 and 4, the cooling water tank 32 is provided with an annular partition sleeve 321 having a through hole 3211 in the middle and being hollow, the return pipe 38 is communicated with a portion of the cooling water tank 32 above the annular partition sleeve 321, the overflow pipe 39 is communicated with a portion of the cooling water tank 32 above the annular partition sleeve 321, and the second water supply pipe 36 is communicated with a portion of the cooling water tank 32 below the annular partition sleeve 321. And the flow hole 3211 is internally provided with a one-way valve 322 for limiting the water to flow from the upper part to the lower part, when the water below the one-way valve 322 of the cooling water tank 32 flows out gradually, the bottom of the one-way valve 322 is gradually opened after no supporting force of the water, the water above the one-way valve 322 flows to the lower part through the one-way valve 322, and when the water below the one-way valve 322 of the cooling water tank 32 is full, the one-way valve 322 is closed. Meanwhile, the annular partition sleeve 321 is arranged in the cooling water tank 32 in a lifting manner, limit screws 323 are arranged on two sides of the inner wall of the cooling water tank 32, limit bars 324 with waist-shaped holes sleeved on the limit screws 323 are arranged on two sides of the upper surface of the annular partition sleeve 321, locking knobs 325 used for being abutted against the limit bars 324 are connected to the limit screws 323 in a threaded manner, and rubber sealing rings 326 abutted against the inner wall of the cooling water tank 32 are respectively embedded into the upper end and the lower end of the periphery of the annular partition sleeve 321.
As shown in fig. 1, 3 and 5, the circumference side of the double-cone tank 2 near two ends is provided with a plurality of clamping cavities 21 communicated with an inner layer and a first communication pipe 22 penetrating out of the double-cone tank 2, the circumference side of the double-cone tank 2 near two ends is provided with a plurality of clamping cavities 21 communicated with an outer layer and a second communication pipe 23 penetrating out of the double-hammer tank, the plurality of first communication pipes 22 and the plurality of second communication pipes 23 are corresponding, a U-shaped connecting pipe 24 is arranged between the corresponding first communication pipes 22 and second communication pipes 23, two ends of the connecting pipe 24 are detachably connected with the first communication pipes 22 and the second communication pipes 23, and the first communication pipes 22, the second communication pipes 23 and the connecting pipe 24 are communicated with the inner and outer two-layer clamping cavities 21. The operation method for cleaning the scale in the double-cone tank body 2 comprises the following steps: (S1) controlling an electromagnetic three-way valve 34 through a control panel 6 to enable a water pump 33 to be communicated with a cooling water tank 32, adding a scale remover into the cooling water tank 32, starting rotation of a conical tank body, and enabling water in the cooling water tank 32 to enter inner rings of two side clamping cavities 21 in the conical tank body for 20-30 minutes in a mode of providing cooling water by a circulating heating system 3; (S2) draining the water in the cooling water tank 32, controlling the electromagnetic three-way valve 34 through the control panel 6 so that the water pump 33 is connected with the electric heating water tank 31, stopping the rotation of the conical tank body, gradually draining the water remained in the double-conical tank body 2 into the cooling water tank 32 in a manner of supplying hot water through the circulation heating system 3, draining the cooling water tank 32 if the water level in the cooling water tank 32 is about to reach the height of the overflow pipe 39, and draining the water in the cooling water tank 32 after the circulation flushing; (S3) placing a collecting tank under the cone-shaped tank, and removing the connection pipe 24 under the cone-shaped tank so that the residual water in the cone-shaped tank is directly discharged from the connection pipe 24 into the collecting tank.
The implementation effect is as follows: the circulating heating system 3 is used for preheating materials, the vaporization amount of water in the materials is small in the preheating process, the double-cone tank body 2 rotates at a high rotation speed of 6 revolutions per minute, and the rapid temperature rise of the materials is realized in the stage; after the material is preheated, the moisture in the material begins to be vaporized in a large quantity, the double-cone tank body 2 rotates at a low rotation speed of 2-4 r/min, free water and surface water in the material are dried at the stage, and the phenomenon that the material is bonded and agglomerated due to the fact that the vaporization speed of the moisture is too high is avoided; when the surface of the material is dry and is not easy to bond and agglomerate, the heating temperature of the circulating heating system 3 is increased, the biconical tank body 2 rotates at a medium-high rotation speed of 4-6 r/min, and the moisture in the material is dried at the stage, so that the drying speed is increased, and the drying time is shortened until the drying is completed; the circulating heating system 3 provides cooling water to circularly cool the materials, so that the temperature of the materials in the double-cone tank body 2 is reduced, and the dried materials are discharged; finally has the function of improving the drying efficiency.
The cooling water tank 32 is located the annular and cuts off the temperature of cover 321 below lower, and circulation heating system 3 at the back provides the cooling water and circulates the cooling, through the cooling effect, and the cooling water tank 32 skill annular cuts off the temperature of cover 321 top higher, and the reducible temperature that leads to the fact the influence in the electric heating water tank 31 that flows back to electric heating water tank 31 to the convenient heating is to the settlement temperature. The one-way valve 322 is arranged to enable the upper part and the lower part of the cooling water tank 32 positioned on the annular partition sleeve 321 to be partitioned, so that heat exchange is reduced, water at the lower part can be cooled slowly, and the effect of cooling water provided by the circulating heating system 3 for circulating cooling is improved; and when the water in the lower part is lack, the water in the upper part can be replenished after flowing downwards through the one-way valve 322. The height of the annular partition sleeve 321 can be adjusted by adjusting the position of the limit screw 323 passing through the limit strip 324 and fixing the limit screw through the locking knob 325, so that continuous water cooling of the upper part and the lower part of the annular partition sleeve 321 is realized, and the water quantity of the lower part meets the water requirement during cooling operation as much as possible.
The electromagnetic three-way valve 34 is controlled by the control panel 6, so that the water pump 33 is communicated with the cooling water tank 32, a scale scavenger is added into the cooling water tank 32, the conical tank body starts to rotate, and water in the cooling water tank 32 enters into inner rings of two side clamping cavities 21 in the conical tank body for 20-30 minutes in a mode of providing cooling water by the circulating heating system 3; the water in the cooling water tank 32 is emptied, the electromagnetic three-way valve 34 is controlled by the control panel 6, the water pump 33 is connected with the electric heating water tank 31, the conical tank body stops rotating, the residual water in the double-conical tank body 2 is gradually discharged into the cooling water tank 32 in a mode of providing hot water by the circulating heating system 3, the cooling water tank 32 is emptied when the water level in the cooling water tank 32 is about to reach the height of the overflow pipe 39, and the water in the cooling water tank 32 is emptied after circulating flushing; placing a collecting barrel below the conical tank body, and disassembling a connecting pipe 24 below the conical tank body, so that residual water in the conical tank body is directly discharged into the collecting barrel from the connecting pipe 24; finally, the scale in the interlayer of the double-cone tank body 2 is cleaned, and the cleaning effect on the scale can be improved.
After the base 1 and the double-cone tank 2 of the rotary vacuum dryer are mounted in a suspended manner, the lifting cylinder 123 can drive the receiving sleeve 121 to be sleeved on the discharge end of the double-cone tank 2 after drying is completed, so that materials are discharged through the discharge hole 11.
The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and modifications to the present embodiment, which may not creatively contribute to the present invention as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present invention.
Claims (8)
1. The rotary vacuum dryer comprises a machine base (1), a double-cone tank body (2) which is rotationally connected to the machine base (1) and is provided with an inner layer and an outer layer communicated clamping cavity (21) at the periphery, a circulating heating system (3) which is communicated to the two layers of clamping cavities (21) of the double-cone tank body (2) along the rotation position of one end of the double-cone tank body (2), a vacuum filtering system (4) which is communicated to the inside of the double-cone tank body (2) along the rotation position of the other end of the double-cone tank body (2), a power system (5) which is arranged between the machine base (1) and the rotation position of the other end of the double-cone tank body (2) and drives the double-cone tank body (2) to rotate, and a control panel (6) which is arranged on the machine base (1) and is arranged between the rotation position of one end of the double-cone tank body (2) and is provided with a rotary joint (7) which is provided with a water inlet end communicated with the inner layer clamping cavity (21) and a water outlet end communicated with the outer layer clamping cavity (21), and is characterized in that the circulating heating system (3) comprises an electric heating water tank (32), a cooling water pump (31), a water inlet valve (33) and an electromagnetic water inlet valve (33) which are arranged between the water inlet valve (33) and the water tank (35) of the electromagnetic water tank (33) and the electromagnetic water inlet valve (35 A second water supply pipe (36) communicated between the electromagnetic three-way valve (34) and the cooling water tank (32), a water inlet pipe (37) communicated between the water outlet end of the water pump (33) and the water inlet end of the rotary joint (7), a water return pipe (38) communicated between the cooling water tank (32) and the water outlet end of the rotary joint (7), and an overflow pipe (39) communicated between the cooling water tank (32) and the electric heating water tank (31);
the operation method of the circulating heating system (3) with the rotation speed of the double-cone tank body (2) comprises the following steps: the method comprises the steps that (S1) a circulating heating system (3) is used for preheating materials, the vaporization amount of moisture in the materials is small in the preheating process, a double-cone tank body (2) rotates at a high rotation speed of 6 revolutions per minute, and the rapid temperature rise of the materials is realized in the stage; (S2) after the material is preheated, the moisture in the material begins to be vaporized in a large amount, the double-cone tank body (2) rotates at a low rotation speed of 2-4 r/min, free water and surface water in the material are dried in the stage, and the phenomenon that the material is bonded and agglomerated due to the fact that the vaporization speed of the moisture is too high is avoided; (S3) when the surface of the material is dry and is not easy to be bonded into clusters, the heating temperature of the circulating heating system (3) is increased, the double-cone tank body (2) rotates at a medium-high rotating speed of 4-6 revolutions per minute, and the moisture in the material is dried at the stage, so that the drying speed is increased, and the drying time is shortened until the drying is completed; and (S4) the circulating heating system (3) provides cooling water to circularly cool the materials, so that the temperature of the materials in the double-cone tank body (2) is reduced, and the dried materials are discharged.
2. A rotary vacuum dryer according to claim 1, characterized in that: the cooling water tank (32) middle part is provided with a hollow annular partition sleeve (321) with a flow hole (3211) in the middle part, the return pipe (38) is communicated with the part of the cooling water tank (32) above the annular partition sleeve (321), the overflow pipe (39) is communicated with the part of the cooling water tank (32) above the annular partition sleeve (321), and the second water supply pipe (36) is communicated with the part of the cooling water tank (32) below the annular partition sleeve (321).
3. A rotary vacuum dryer according to claim 2, characterized in that: be provided with in the circulation hole (3211) restriction water from the unidirectional flow of top to check valve (322) of below, when cooling water tank (32) are in the water of check valve (322) below and flow out gradually, be open state gradually after the holding power of check valve (322) bottom no water, the water of check valve (322) top flows to the below through check valve (322), when cooling water tank (32) are in the water of check valve (322) below and fill up, check valve (322) are closed state.
4. A rotary vacuum dryer according to claim 3, characterized in that: annular cuts off cover (321) lift setting in coolant tank (32), coolant tank (32) inner wall both sides are provided with spacing screw (323), annular cuts off cover (321) upper surface both sides are provided with spacing (324) that have the waist type hole of cover on spacing screw (323), threaded connection has locking knob (325) that are used for supporting tightly on spacing (324) on spacing screw (323), annular cuts off the upper end and the lower extreme of the week side of cover (321) and imbeds respectively and be provided with rubber seal (326) that support tightly on coolant tank (32) inner wall.
5. A rotary vacuum dryer according to claim 1, characterized in that: the double-cone tank is characterized in that a plurality of clamping cavities (21) communicated with an inner layer are formed in the periphery side, close to two ends, of the double-cone tank body (2) and a first communicating pipe (22) penetrating out of the double-cone tank body (2), a plurality of clamping cavities (21) communicated with an outer layer and a second communicating pipe (23) penetrating out of the double-hammer tank body are formed in the periphery side, close to two ends, of the double-cone tank body (2), the first communicating pipe (22) and the second communicating pipe (23) are corresponding, a U-shaped connecting pipe (24) is arranged between the corresponding first communicating pipe (22) and the corresponding second communicating pipe (23), two ends of the connecting pipe (24) are detachably connected with the first communicating pipe (22) and the second communicating pipe (23), and the first communicating pipe (22) are communicated with the inner layer and the outer layer of the clamping cavities (21);
the operation method for cleaning the scale in the double-cone tank body (2) comprises the following steps: the method comprises the steps of (S1) controlling an electromagnetic three-way valve (34) through a control panel (6) to enable a water pump (33) to be communicated with a cooling water tank (32), adding a scale remover into the cooling water tank (32), starting rotation of a conical tank body, and enabling water in the cooling water tank (32) to enter inner rings of two side clamping cavities (21) in the conical tank body for 20-30 minutes in a cooling water supply mode of a circulating heating system (3); (S2) evacuating water in the cooling water tank (32), controlling an electromagnetic three-way valve (34) through a control panel (6) to enable a water pump (33) to be connected with the electric heating water tank (31), stopping rotating the conical tank body, gradually discharging residual water in the double-conical tank body (2) into the cooling water tank (32) in a mode of supplying hot water through a circulating heating system (3), evacuating the cooling water tank (32) if the water level in the cooling water tank (32) is about to reach the height of an overflow pipe (39), and evacuating water in the cooling water tank (32) after circulating flushing; (S3) placing a collecting barrel below the conical tank body, and disassembling a connecting pipe (24) below the conical tank body, so that residual water in the conical tank body is directly discharged into the collecting barrel from the connecting pipe (24).
6. A rotary vacuum dryer according to claim 1, characterized in that: the automatic feeding device is characterized in that a manual valve is arranged at the discharge end of the double-cone tank body (2), a discharge hole (11) is formed in the bottom of the base (1) corresponding to the discharge end of the double-cone tank body (2), a material receiving mechanism (12) for communicating the discharge hole (11) with the discharge end of the double-cone tank body (2) is arranged on the base (1), and a material can be conveyed onto other equipment through a connecting pipe (24) on the discharge hole (11) under the action of gravity.
7. A rotary vacuum dryer according to claim 6, wherein: the material receiving mechanism (12) comprises a material receiving sleeve (121) which is sleeved on the discharge end of the double-cone tank body (2) after moving upwards, a telescopic pipeline (122) which is arranged between the lower end of the material receiving sleeve (121) and the discharge hole (11), and two lifting cylinders (123) which are arranged between the machine base (1) and the material receiving sleeve (121) and drive the material receiving sleeve (121) to move up and down.
8. A rotary vacuum dryer according to claim 1, characterized in that: the inner wall of the middle part of the biconical tank body (2) is corrugated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310503587.7A CN116734580A (en) | 2023-05-04 | 2023-05-04 | Rotary vacuum dryer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310503587.7A CN116734580A (en) | 2023-05-04 | 2023-05-04 | Rotary vacuum dryer |
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| Publication Number | Publication Date |
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| CN116734580A true CN116734580A (en) | 2023-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310503587.7A Pending CN116734580A (en) | 2023-05-04 | 2023-05-04 | Rotary vacuum dryer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117419527A (en) * | 2023-12-18 | 2024-01-19 | 泰州天鸿生化科技有限公司 | Amino acid high-efficient gyration vacuum drying device |
-
2023
- 2023-05-04 CN CN202310503587.7A patent/CN116734580A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117419527A (en) * | 2023-12-18 | 2024-01-19 | 泰州天鸿生化科技有限公司 | Amino acid high-efficient gyration vacuum drying device |
| CN117419527B (en) * | 2023-12-18 | 2024-03-08 | 泰州天鸿生化科技有限公司 | Amino acid high-efficient gyration vacuum drying device |
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