CN210718447U - Rake dryer for producing low-viscosity PVM/MA copolymer - Google Patents
Rake dryer for producing low-viscosity PVM/MA copolymer Download PDFInfo
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- CN210718447U CN210718447U CN201921628728.3U CN201921628728U CN210718447U CN 210718447 U CN210718447 U CN 210718447U CN 201921628728 U CN201921628728 U CN 201921628728U CN 210718447 U CN210718447 U CN 210718447U
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Abstract
The utility model relates to a chemical industry equipment technical field discloses a harrow formula desiccator for production of low viscosity PVM MA copolymer, which comprises a frame, be fixed with the drying cylinder in the frame, be equipped with central harrow axle in the drying cylinder, the epaxial first rake arm that is equipped with of center harrow, first rake arm includes first last rake arm, first rake arm, is equipped with left connecting band and right connecting band between the adjacent first rake arm, and the top of left connecting band is connected with the first upper portion of going up the rake arm in left side, and the bottom is connected with the sub-unit connection of the first rake arm on right side, and the top of right connecting band is connected with the first upper portion of going up the rake arm in right side, and the bottom is connected with the sub-unit connection of the first rake arm in left side. The utility model discloses can carry out intensive mixing to the material, stirring range is wide, makes the material drying more even, reduces the drying energy consumption, shortens drying time, improves drying effect.
Description
Technical Field
The utility model relates to a chemical industry equipment technical field especially relates to a harrow formula desiccator that is used for production of low viscosity PVM MA copolymer.
Background
The PVM/MA copolymer has excellent solubility, film forming property and stable chemical property, and needs to be dried by a rake dryer in the preparation process. The operating principle of the rake dryer is as follows: the material enters the cylinder of the rake dryer, is indirectly heated by the heat transfer medium flowing in the interlayer of the cylinder under the stirring of the continuously rotating rake rod, and the moisture in the material is vaporized and is timely pumped away by the vacuum pump, so that the material is dried. The existing rake dryer has the disadvantages that the rake arm cannot fully stir the materials, the materials in contact with the cylinder wall cannot be updated continuously or are not updated timely, the uniformity of the materials is poor, the effective heat transfer area of the cylinder wall is small, and the drying is uneven, the energy consumption is large and the drying time is long.
SUMMERY OF THE UTILITY MODEL
In order to solve the prior technical problem, the utility model provides a rake dryer for production of low viscosity PVM/MA copolymer.
In order to achieve the above object, the utility model provides a following technical scheme: a rake dryer for producing low-viscosity PVM/MA copolymer comprises a frame, wherein a drying cylinder and a first driving assembly are fixed on the frame, a feed inlet and a discharge outlet are formed in the drying cylinder, a vacuumizing tube is arranged on the feed inlet, end covers are fixedly connected to two ends of the drying cylinder, a heating cavity and a heat insulation layer are arranged on the outer side of the drying cylinder, the heating cavity is provided with a heating medium inlet and a heating medium outlet, and a central rake shaft is coaxially arranged in the drying cylinder; the central harrow shaft is provided with a plurality of first harrow bars which are parallel to each other, each first harrow bar comprises a first upper harrow bar and a first lower harrow bar, the first upper harrow bars and the first lower harrow bars are symmetrically and vertically fixed on the central harrow shaft, a left connecting belt and a right connecting belt are arranged between the adjacent first harrow bars, the top end of the left connecting belt is connected with the upper part of the first upper harrow bar on the left side, the bottom end of the left connecting belt is connected with the lower part of the first lower harrow bar on the right side, the left connecting belt forms a discontinuous left spiral belt, the top end of the right connecting belt is connected with the upper part of the first upper harrow bar on the right side, the bottom end of the right connecting belt is connected with the lower part of the first lower harrow bar on the left side, and the; the two ends of the central harrow shaft are respectively connected with the two end covers in a rotating and sealing mode and extend out of the outer side of the drying cylinder, and one end of the central harrow shaft is connected with the first driving assembly.
Preferably, a plurality of second rake rods are arranged on the central rake shaft and are arranged between the adjacent first rake rods, the axial direction of each second rake rod is perpendicular to the corresponding first upper rake rod, the second rake rods vertically penetrate through the central rake shaft and are connected with the central rake shaft in a rotating and sealing mode through a sealing structure, each second rake rod is connected with a second driving assembly, the portions, extending out of two sides of the central rake shaft, of each second rake rod are respectively provided with a first helical blade and a second helical blade, and the directions of the first helical blades and the second helical blades are opposite.
Preferably, the central rake shaft is a hollow shaft, and two ends of the central rake shaft are connected with sealing covers, the second driving assembly comprises a worm wheel, a worm and a worm motor, the worm wheel and the second rake rod are in the same quantity, the worm wheel is coaxially fixed on the second rake rod positioned in the central rake shaft, the worm is arranged below the worm wheel and meshed with the worm wheel, two ends of the worm are rotatably connected onto the two sealing covers through bearings, one end of the worm extends out of the sealing covers and is in transmission connection with the worm motor, and the worm motor is fixed at one end, far away from the first driving assembly, of the central rake shaft.
Preferably, the central harrow shaft is provided with a through hole for the second harrow bar to pass through, the sealing structure comprises an annular groove and an annular plate, the annular groove is arranged on the side wall of the through hole, the annular plate is fixed on the second harrow bar and is arranged in the annular groove, and sealing grease is filled in a gap between the annular groove and the annular plate.
Preferably, the first harrow bar and the second harrow bar are arranged at equal intervals.
Preferably, the end parts of the first upper rake lever, the second upper rake lever and the second rake lever far away from the central rake shaft are all provided with rake blades.
The utility model discloses can carry out intensive mixing to the material, stirring range is wide, makes the material drying more even, reduces the drying energy consumption, shortens drying time, improves drying effect.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic transverse cross-sectional view of the central rake shaft of the present invention.
Fig. 3 is an axial cross-sectional view of the central rake shaft according to the present invention.
In the figure: the device comprises a machine frame 1, a drying cylinder 2, a feeding hole 3, a discharging hole 4, a vacuumizing tube 5, an end cover 6, a heating cavity 7, a heat-insulating layer 8, a heating medium inlet 9, a heating medium outlet 10, a central rake shaft 11, a first upper rake rod 12, a first lower rake rod 13, a left connecting band 14, a right connecting band 15, a second rake rod 16, a first spiral blade 17, a second spiral blade 18, a sealing cover 19, a worm gear 20, a worm 21, a worm motor 22, a bearing 23, an annular groove 24, an annular plate 25, sealing grease 26 and rake blades 27.
Detailed Description
The embodiments of the present invention will be further explained with reference to the drawings.
Referring to fig. 1-3, a rake dryer for producing low-viscosity PVM/MA copolymer comprises a frame 1, wherein a drying cylinder 2 and a first driving assembly are fixed on the frame 1, a feeding port 3 and a discharging port 4 are arranged on the drying cylinder 2, and a vacuumizing pipe 5 is arranged on the feeding port 3. Two ends of the drying cylinder 2 are fixedly connected with end covers 6, a heating cavity 7 and a heat preservation layer 8 are arranged on the outer side of the drying cylinder 2, the heating cavity 7 is provided with a heating medium inlet 9 and a heating medium outlet 10, and a central rake shaft 11 is coaxially arranged in the drying cylinder 2. Six first rake rods which are parallel to each other are arranged on the central rake shaft 11. First harrow pole includes first harrow pole 12, first harrow pole 13, first harrow pole 12 and first harrow pole 13 symmetry vertical fixation are equipped with left connecting band 14 and right connecting band 15 on central harrow axle 11 between the adjacent first harrow pole, wherein the top of left connecting band 14 is connected with the first upper portion of going up harrow pole 12 in left side, and the bottom is connected with the sub-unit of the first harrow pole 13 on right side, and left connecting band 14 constitutes the left spiral area that is interrupted, the top of right connecting band 15 is connected with the first upper portion of going up harrow pole 12 in right side, the bottom is connected with the sub-unit of the first harrow pole 13 in left side, and right connecting band 15 constitutes the right spiral area that is interrupted. Two ends of the central harrow shaft 11 are respectively connected with the two end covers 6 in a rotating and sealing manner and extend out of the outer side of the drying cylinder 2, and one end of the central harrow shaft 11 is connected with the first driving assembly. In this embodiment, the first driving assembly includes a rake shaft motor and a speed reducer fixed on the frame 1, the rake shaft motor is connected to the speed reducer, and an output shaft of the speed reducer is connected to the central rake shaft 11.
Six second rake levers 16 are arranged on the central rake shaft 11, the second rake levers 16 are arranged between the adjacent first rake levers, the axial direction of the second rake levers 16 is perpendicular to the first upper rake lever 12, the second rake levers 16 vertically penetrate through the central rake shaft 11 and are connected with the central rake shaft 11 in a rotating and sealing mode through sealing structures, the second rake levers 16 are connected with a second driving assembly, the portions, extending out of the two sides of the central rake shaft 11, of the second rake levers 16 are respectively provided with first helical blades 17 and second helical blades 18, and the directions of the first helical blades 17 and the second helical blades 18 are opposite.
The central harrow shaft 11 is a hollow shaft, two ends of the central harrow shaft are connected with sealing covers 19, the second driving assembly comprises worm wheels 20, worm screws 21 and a worm motor 22, the number of the worm wheels 20 is consistent with that of the second harrow bars 16, the worm wheels 20 are coaxially fixed on the second harrow bars 16 positioned in the central harrow shaft 11, the worm screws 21 are arranged below the worm wheels 20 and meshed with the worm wheels 20, two ends of the worm screws 21 are rotatably connected onto the two sealing covers 19 through bearings 23, one end part of each worm screw 21 extends out of the sealing cover 19 and is in transmission connection with the worm motor 22 through mutually meshed driving gears and driven gears, and the worm motor 22 is fixed on one end, far away from the first driving assembly, of the central harrow shaft 11.
The central harrow shaft 11 is provided with a through hole for the second harrow bar 16 to pass through, the sealing structure comprises an annular groove 24 and an annular plate 25, the annular groove 24 is arranged on the side wall of the through hole, the annular plate 25 is fixed on the second harrow bar 16 and is arranged in the annular groove 24, and a gap between the annular groove 24 and the annular plate 25 is filled with sealing grease 26.
The first and second harrow bars 16 are all arranged at equal intervals.
The end parts of the first upper harrow bar 12, the second lower harrow bar 13 and the second harrow bar 16 far away from the central harrow shaft are all provided with harrow blades 27.
The material enters the drying cylinder 2 from the feeding hole 3, and the heating medium flows into the heating cavity 7 from the heating medium inlet 9 and flows out from the heating medium outlet 10 to heat and dry the material in the drying cylinder 2. During drying, the rake shaft motor drives the central rake shaft 11 to rotate, the first upper rake rod 12, the first lower rake rod 13 and the second rake rod 16 rotate along with the central rake shaft 11 and stir materials, and the materials reciprocate along with the circumferential direction of the rake rods.
The left connecting belt 14 and the right connecting belt 15 rotate along with the central harrow shaft 11 and drive materials around the central harrow shaft to move along the spiral direction of a left spiral belt or a right spiral belt formed by the central harrow shaft, and the left connecting belt 14 and the right connecting belt 15 can enable the materials to be displaced in the axial direction of the central harrow shaft 11 and form material circulating flow, so that the materials are fully stirred, the drying uniformity is improved, and the drying speed is accelerated. In the embodiment, the left spiral belt and the right spiral belt are opposite in spiral direction, material circulating flows formed by the left spiral belt and the right spiral belt are relatively independent and are convection, materials continuously move in a reciprocating mode, the heat and mass transfer speed between the left spiral belt and the right spiral belt is increased, the drying uniformity is better, and the drying efficiency is improved.
In the drying process, the rake blades 27 rotate along with the rake rod where the rake blades are located, so that materials on the inner wall of the drying cylinder 2 are continuously scraped, the surface of the inner wall of the drying cylinder 2 is quickened to be updated, and the inner wall of the drying cylinder 2 can be effectively prevented from scaling.
The vacuum-pumping pipe 5 is connected with a vacuum pump, and the water in the materials is evaporated and pumped out by the vacuum pump.
The dried material is discharged from the discharge port 4, in the material discharging process, the rake shaft motor drives the central rake shaft 11 to rotate forward and backward, and the left spiral belt and the right spiral belt in the drying cylinder can accelerate the material discharging.
Claims (6)
1. A rake dryer for the production of low viscosity PVM/MA copolymers comprising a frame, characterized in that: a drying cylinder and a first driving assembly are fixed on the rack, a feed port and a discharge port are formed in the drying cylinder, a vacuumizing tube is arranged on the feed port, end covers are fixedly connected to two ends of the drying cylinder, a heating cavity and a heat insulation layer are arranged on the outer side of the drying cylinder, a heating medium inlet and a heating medium outlet are formed in the heating cavity, and a central rake shaft is coaxially arranged in the drying cylinder; the central harrow shaft is provided with a plurality of first harrow bars which are parallel to each other, each first harrow bar comprises a first upper harrow bar and a first lower harrow bar, the first upper harrow bars and the first lower harrow bars are symmetrically and vertically fixed on the central harrow shaft, a left connecting belt and a right connecting belt are arranged between the adjacent first harrow bars, the top end of the left connecting belt is connected with the upper part of the first upper harrow bar on the left side, the bottom end of the left connecting belt is connected with the lower part of the first lower harrow bar on the right side, the left connecting belt forms a discontinuous left spiral belt, the top end of the right connecting belt is connected with the upper part of the first upper harrow bar on the right side, the bottom end of the right connecting belt is connected with the lower part of the first lower harrow bar on the left side, and the; the two ends of the central harrow shaft are respectively connected with the two end covers in a rotating and sealing mode and extend out of the outer side of the drying cylinder, and one end of the central harrow shaft is connected with the first driving assembly.
2. The rake dryer for the production of low viscosity PVM/MA copolymers of claim 1, characterized in that: the central rake shaft is provided with a plurality of second rake rods, the second rake rods are arranged between adjacent first rake rods, the axial direction of the second rake rods is perpendicular to the first upper rake rods, the second rake rods vertically penetrate through the central rake shaft and are connected with the central rake shaft in a rotating and sealing mode through a sealing structure, the second rake rods are connected with a second driving assembly, the portions, extending out of the two sides of the central rake shaft, of the second rake rods are respectively provided with a first helical blade and a second helical blade, and the directions of the first helical blade and the second helical blade are opposite.
3. Rake dryer for the production of low-viscosity PVM/MA copolymers, according to claim 2, characterized in that: the central harrow axle is the quill shaft and its both ends are connected with the closing cap, second drive assembly includes worm wheel, worm motor, the worm wheel is unanimous with the quantity of second harrow pole, and the worm wheel coaxial fixation is on being located the second harrow pole of central harrow axle, the worm is located the worm wheel below and is meshed with the worm wheel, and the both ends of worm are passed through the bearing and are rotated and connect on two closing caps, and a tip of worm stretches out the closing cap outside and is connected with worm motor transmission, the worm motor is fixed on the one end that first drive assembly was kept away from to central harrow axle.
4. The rake dryer for the production of low viscosity PVM/MA copolymers of claim 3, characterized in that: the central harrow shaft is provided with a through hole for the second harrow bar to pass through, the sealing structure comprises an annular groove and an annular plate, the annular groove is arranged on the side wall of the through hole, the annular plate is fixed on the second harrow bar and is arranged in the annular groove, and sealing grease is filled in a gap between the annular groove and the annular plate.
5. Rake dryer for the production of low-viscosity PVM/MA copolymers, according to claim 2, characterized in that: the first rake rod and the second rake rod are arranged at equal intervals.
6. Rake dryer for the production of low-viscosity PVM/MA copolymers, according to claim 2, characterized in that: the end parts of the first upper rake rod, the second upper rake rod and the second rake rod, which are far away from the central rake shaft, are all provided with rake blades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921628728.3U CN210718447U (en) | 2019-09-27 | 2019-09-27 | Rake dryer for producing low-viscosity PVM/MA copolymer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921628728.3U CN210718447U (en) | 2019-09-27 | 2019-09-27 | Rake dryer for producing low-viscosity PVM/MA copolymer |
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| Publication Number | Publication Date |
|---|---|
| CN210718447U true CN210718447U (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921628728.3U Active CN210718447U (en) | 2019-09-27 | 2019-09-27 | Rake dryer for producing low-viscosity PVM/MA copolymer |
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| CN (1) | CN210718447U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113932584A (en) * | 2021-09-27 | 2022-01-14 | 濮阳市万泉化工有限公司 | Sealed production of gluing of polyurethane is with harrow formula drying-machine |
-
2019
- 2019-09-27 CN CN201921628728.3U patent/CN210718447U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113932584A (en) * | 2021-09-27 | 2022-01-14 | 濮阳市万泉化工有限公司 | Sealed production of gluing of polyurethane is with harrow formula drying-machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220309 Address after: 454450 No. 1888, Cultural Road (eastern section), Poai County, Jiaozuo, Henan Patentee after: Boai Xinkaiyuan Pharmaceutical Co.,Ltd. Address before: 454450 No. 1888, Cultural Road (eastern section), Poai County, Jiaozuo, Henan Patentee before: BOAI NKY MEDICAL HOLDINGS Ltd. |
|
| TR01 | Transfer of patent right |