CN109529387B - Rotary multi-piece type scraper disc thin film evaporator and working method thereof - Google Patents
Rotary multi-piece type scraper disc thin film evaporator and working method thereof Download PDFInfo
- Publication number
- CN109529387B CN109529387B CN201910095700.6A CN201910095700A CN109529387B CN 109529387 B CN109529387 B CN 109529387B CN 201910095700 A CN201910095700 A CN 201910095700A CN 109529387 B CN109529387 B CN 109529387B
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- disc
- shell
- pipe
- cutter bar
- vent pipe
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- 239000010409 thin film Substances 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims description 11
- 239000000463 material Substances 0.000 claims abstract description 53
- 238000007790 scraping Methods 0.000 claims description 33
- 238000001704 evaporation Methods 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 9
- 230000008020 evaporation Effects 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 238000003892 spreading Methods 0.000 claims description 4
- 230000007480 spreading Effects 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 3
- 239000010408 film Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/22—Evaporating by bringing a thin layer of the liquid into contact with a heated surface
- B01D1/222—In rotating vessels; vessels with movable parts
- B01D1/223—In rotating vessels; vessels with movable parts containing a rotor
- B01D1/225—In rotating vessels; vessels with movable parts containing a rotor with blades or scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
Abstract
The invention relates to a rotary multi-piece scraper disc thin film evaporator which comprises a cylindrical shell, wherein a vent pipe is arranged on the shell along the middle axis direction of the shell, the vent pipe vertically extends downwards to extend out of the shell, a plurality of discs are sleeved on the periphery of the vent pipe, the interiors of the discs are hollow and are communicated with the joint of the vent pipe, a feed pipe is arranged above each disc, the feed pipe extends to the center of the disc from the outer side of the disc, a material lifting device is arranged on one side opposite to the feed pipe, lifting of the material lifting device is controlled by a cylinder so as to take materials, and a belt pulley group is driven by a first motor below the vent pipe to enable the vent pipe to rotate.
Description
Technical Field
The invention relates to a rotary multi-piece scraper disc thin film evaporator and a working method thereof.
Background
A scraper disc film evaporator is a common device for evaporating and drying paste materials with certain viscosity, which performs evaporation and drying in a heat conduction mode and scrapes off the materials evaporated and dried on a disc through a scraper. The scraper disc thin film evaporator has short evaporation time and high heat conduction efficiency, and is especially suitable for evaporating and drying materials with higher viscosity and materials containing particles which are easy to crystallize. Therefore, the method is widely applied to industries such as chemical engineering, medicines and the like.
The existing evaporation dryer mostly adopts integral evaporation in a barrel of a container, and the method has higher requirements on heating and heat preservation performance of the evaporator, difficult water vapor discharge, smaller heat transfer area and low heat efficiency; in the evaporation drying process, as the water content is reduced and the viscosity of the material is increased, the fluidity of the material is deteriorated, so that the power consumption of the material transmission device of the evaporator is high and the operation cost is high; the thin film thickness of material is mostly fixed that handling capacity is little and the higher material of unable processing concentration can't satisfy the production demand under multiple circumstances. In addition, the method mostly can deteriorate the fluidity of the materials, and the materials are easy to overheat and coke.
Disclosure of Invention
In view of the defects of the prior art, the technical problem to be solved by the invention is to provide the rotary multi-piece scraper disc thin film evaporator and the working method thereof, which are reasonable in structure and convenient and quick.
In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides a rotatory multi-disc scraper blade disc thin film evaporator, includes a cylindric shell, the shell is provided with a breather pipe along its axis direction, and the breather pipe vertically extends the shell downwards, breather pipe periphery cover is established a plurality of discs, the disc is inside hollow and be linked together with the breather pipe junction, every disc top all is provided with the inlet pipe, and the inlet pipe all extends to the disc center from the disc outside, is provided with the material loading unit with the opposite one side of inlet pipe, and this material loading unit passes through a cylinder control its lift and then gets the material, the breather pipe below drives the drive belt pulley group through first motor and makes the breather pipe rotate.
Further, the material lifting device comprises a scraping plate which is arranged above each layer of disc, the scraping plate is located outside the discs and fixedly connected with a vertically arranged cutter bar, the scraping plate extends towards the inner part, and the cutter bar extends upwards to form a shell and is connected with the air cylinder.
Further, the scraper blade is including knife rest and scraper, has all set firmly four scrapers on every knife rest, and adjacent scraper is the staggered distribution, the knife rest is not extended towards breather pipe central direction, and its certain angle of skew center to guarantee can not the windrow, be provided with the discharge gate outside the disc of knife rest skew center one side, the discharge gate is seted up in the shell bottom surface, knife rest and disc parallel arrangement.
Further, the cutter bar inside the shell is fixedly provided with a limit flange on one side close to the inner bottom surface, a gasket is sleeved at the cutter bar of the inner bottom surface of the shell, a spring is sleeved outside the cutter bar between the gasket and the limit flange, one end of the spring is propped against the gasket, one end of the spring is propped against the lower surface of the flange, the shell is provided with sliding bearings at the positions where the cutter bar penetrates through the upper surface and the lower surface of the shell, and the position where the cutter bar extends out of the lower surface of the shell is connected with a second motor through a gear set.
Further, the disc is evenly arranged along the extending direction of the vent pipe, the disc and the vent pipe are fixedly arranged into a whole and are communicated, the disc is not horizontal, and the whole disc is bent downwards to form a certain angle, so that the disc is umbrella-like, and the material can be evenly spread.
Further, antifriction bearings are arranged on the shell at the position that the vent pipe penetrates through the lower surface of the shell, so that the vent pipe is driven by the belt pulley group to rotate, the vent pipe is an air inlet at the bottommost end, a first air outlet is formed at the topmost end, rotary joints are arranged at the positions, close to the first air outlet and the air inlet, of the vent pipe, and a second air outlet is formed on the upper surface of the shell above the first air outlet.
Further, the inlet pipe is including feeding main pipe and feeding branch pipe, is located the feeding branch pipe of disc top, and the feeding branch pipe extends outside the disc all and is responsible for the intercommunication with the feeding of a vertical setting, the feeding is responsible for outside extending the shell downwards, and this feeding branch pipe lower surface has a plurality of discharge holes along its length direction equipartition.
The working method of the rotary multi-piece scraper disc thin film evaporator comprises the following steps: firstly, the disc is driven by a first motor to rotate, high-temperature steam is introduced into an air inlet to heat the whole disc, materials enter a feeding branch pipe through a feeding main pipe, under the rotation of the disc, the materials are spread on the disc through a discharging hole like a circular ring, and under the action of centrifugal force and gravity, the materials are uniformly spread on the disc; then controlling the contact time of the scraping plate and the disc by controlling the movement of the air cylinder, so as to control the evaporation drying time, when the air cylinder moves downwards, the cutter bar moves downwards, the scraping plate contacts with the disc to lift materials, and at the moment, the limit flange presses down the spring, and the spring is compressed; the scraping plate forms a certain angle with the axis of the disc so as to ensure that the scraping plate cannot be piled up; the disc rotates one circle, the material taking is completed, the cutter bar rotates under the drive of the second motor, the material falls into the discharge hole, the air cylinder retracts, the spring stretches, the cutter bar rises to the initial position under the action of the elastic force of the spring, rotates to the original position under the drive of the second motor, then the material spreading is carried out again, the next processing is carried out, and the like, and the circular processing is carried out.
Compared with the prior art, the invention has the following beneficial effects:
(1) The multi-layer heating structure is adopted, and hollow discs are adopted for each layer, so that materials are heated uniformly, the heat conduction area is large, and the efficiency is high.
(2) The scraper lifting device composed of a plurality of scrapers is adopted, so that no residual materials are ensured on the disc, and the possibility that the materials remain on the working surface and are coked is avoided.
(3) The contact time of the scraping plate and the disc can be controlled by controlling the movement of the air cylinder, so that the evaporation drying time is controlled, and the processing of different materials or different drying requirements of the same material is realized, and the flexibility is good.
The invention will be described in further detail with reference to the drawings and the detailed description.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a top view of the internal structure of FIG. 1;
FIG. 3 is an enlarged view of the blade structure of FIG. 1, showing the blade and blade bar connection;
FIG. 4 is an enlarged schematic view of the disc structure of FIG. 1;
fig. 5 is an enlarged schematic view of the feed tube structure in fig. 1.
In the figure: the device comprises a shell, a 2-breather pipe, a 3-disc, a 6-cylinder, a 7-first motor, an 8-belt pulley group, a 9-scraping plate, a 10-cutter bar, a 11-cutter holder, a 12-scraping plate, a 13-discharge hole, a 14-limit flange, a 15-gasket, a 16-spring, a 17-sliding bearing, a 18-gear group, a 19-second motor, a 20-rolling bearing, a 21-air inlet, a 22-first air outlet, a 23-rotary joint, a 24-second air outlet, a 25-feeding main pipe, a 26-feeding branch pipe and a 27-discharge hole.
Detailed Description
In order to make the above features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
As shown in fig. 1-5, a rotary multi-piece scraper disc thin film evaporator comprises a cylindrical shell 1, wherein a vent pipe 2 is arranged on the shell along the central axis direction of the shell, the vent pipe vertically extends downwards to form the shell, a plurality of discs 3 are sleeved on the periphery of the vent pipe, the interiors of the discs are hollow and are communicated with the joint of the vent pipe, a feed pipe is arranged above each disc, the feed pipe extends from the outer side of the disc to the center of the disc, a lifting device is arranged on one side opposite to the feed pipe, lifting of the lifting device is controlled by a cylinder 6 to take materials, and the lower part of the vent pipe drives a belt pulley group 8 to rotate through a first motor 7. .
In the embodiment of the invention, the material lifting device comprises a scraping plate 9, the scraping plates are arranged above each layer of disc, the scraping plates are fixedly connected with a vertically arranged cutter bar 10 at the outer positions of the discs, the scraping plates extend towards the inner parts, and the cutter bar extends upwards to the outer shell to be connected with the air cylinder.
In the embodiment of the invention, the scraping plates comprise a cutter rest 11 and scraping plates 12, four scraping plates are fixedly arranged on each cutter rest, the adjacent scraping plates are distributed in a staggered mode, the cutter rest does not extend towards the center of the vent pipe, and deviates from the center by a certain angle so as to ensure that no stacking is caused, a discharge hole 13 is arranged outside a disc on one side of the cutter rest, which deviates from the center, and is arranged on the bottom surface of the shell, and the cutter rest and the disc are arranged in parallel.
In the embodiment of the invention, a limit flange 14 is fixedly arranged on one side of a cutter bar in the shell, which is close to the inner bottom surface, a gasket 15 is sleeved at the cutter bar of the inner bottom surface of the shell, a spring 16 is sleeved outside the cutter bar between the gasket and the limit flange, one end of the spring is propped against the gasket, the other end is propped against the lower surface of the flange, sliding bearings 17 are arranged on the shell at the positions where the cutter bar passes through the upper surface and the lower surface of the shell, and the position where the cutter bar extends out of the lower surface of the shell is connected with a second motor 19 through a gear set 18.
In the embodiment of the invention, the discs are uniformly arranged along the extending direction of the vent pipe, the discs and the vent pipe are fixedly arranged into a whole, the interiors of the discs are communicated, the discs are not horizontal, and the whole discs are bent downwards to form a certain angle, so that the discs are umbrella-like, and the uniform spreading of materials is facilitated.
In the embodiment of the invention, a rolling bearing 20 is arranged on the shell at the position that the vent pipe passes through the lower surface of the shell so as to facilitate the belt wheel group to drive the vent pipe to rotate, the vent pipe is provided with an air inlet 21 at the bottommost end and a first air outlet 22 at the topmost end, the vent pipe is provided with a rotary joint 23 at the position close to the first air outlet and the air inlet, a second air outlet 24 is arranged on the upper surface of the shell above the first air outlet, high-temperature steam heated by the disc is discharged from the first air outlet, and then the high-temperature steam is discharged into the atmosphere from the second air outlet.
In the embodiment of the invention, the feeding pipe comprises a feeding main pipe 25 and a feeding branch pipe 26, the feeding branch pipes are all positioned above the disc, the feeding branch pipes extend out of the disc and are all communicated with a vertically arranged feeding main pipe, the feeding main pipe extends out of the shell downwards, and a plurality of discharging holes 27 are uniformly distributed on the lower surface of the feeding branch pipe along the length direction of the feeding branch pipe.
The working method of the rotary multi-piece scraper disc thin film evaporator comprises the following steps: firstly, the disc is driven by a first motor to rotate, high-temperature steam is introduced into an air inlet to heat the whole disc, materials enter a feeding branch pipe through a feeding main pipe, under the rotation of the disc, the materials are spread on the disc through a discharging hole like a circular ring, and under the action of centrifugal force and gravity, the materials are uniformly spread on the disc; then controlling the contact time of the scraping plate and the disc by controlling the movement of the air cylinder, so as to control the evaporation drying time, when the air cylinder moves downwards, the cutter bar moves downwards, the scraping plate contacts with the disc to lift materials, and at the moment, the limit flange presses down the spring, and the spring is compressed; the scraping plate forms a certain angle with the axis of the disc so as to ensure that the scraping plate cannot be piled up; the disc rotates one circle, the material taking is completed, the cutter bar rotates under the drive of the second motor, the material falls into the discharge hole, the air cylinder retracts, the spring stretches, the cutter bar rises to the initial position under the action of the elastic force of the spring, rotates to the original position under the drive of the second motor, then the material spreading is carried out again, the next processing is carried out, and the like, and the circular processing is carried out.
The present invention is not limited to the above-described preferred embodiments, and any person can obtain various other rotary multi-blade type wiped film evaporators and methods of operating the same under the teaching of the present invention. All equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.
Claims (5)
1. A rotary multi-piece scraper disc thin film evaporator, characterized in that: the device comprises a cylindrical shell, wherein the shell is provided with a vent pipe along the middle axis direction, the vent pipe vertically extends downwards to extend out of the shell, the periphery of the vent pipe is sleeved with a plurality of discs, the interiors of the discs are hollow and are communicated with the joint of the vent pipe, a feed pipe is arranged above each disc, the feed pipe extends to the center of the disc from the outer side of the disc, a material lifting device is arranged on the side opposite to the feed pipe, lifting of the material lifting device is controlled by a cylinder to further take materials, and the lower part of the vent pipe drives a belt wheel set to rotate through a first motor;
the material lifting device comprises a scraping plate which is arranged above each layer of disc, the scraping plates are fixedly connected with a vertically arranged cutter bar at the outer positions of the discs, the scraping plates extend towards the inner parts, and the cutter bar extends upwards to the outer shell to be connected with the air cylinder;
the scraping plate comprises a cutter frame and scraping plates, four scraping plates are fixedly arranged on each cutter frame, the adjacent scraping plates are distributed in a staggered mode, the cutter frames do not extend towards the center of the vent pipe and deviate from the center by a certain angle so as to ensure that stacking is avoided, a discharge hole is formed in the outer side of a disc on one side of the cutter frame deviating from the center, the discharge hole is formed in the bottom surface of the shell, and the cutter frames are arranged in parallel with the disc;
the cutter bar inside the shell is fixedly provided with a limit flange on one side close to the inner bottom surface, a gasket is sleeved at the cutter bar of the inner bottom surface of the shell, a spring is sleeved outside the cutter bar between the gasket and the limit flange, one end of the spring is propped against the gasket, one end of the spring is propped against the lower surface of the flange, the shell is provided with sliding bearings at the positions where the cutter bar penetrates through the upper surface and the lower surface of the shell, and the position where the cutter bar extends out of the lower surface of the shell is connected with a second motor through a gear set.
2. A rotary multi-piece scraper disk thin film evaporator as set forth in claim 1, wherein: the disc is evenly set up along breather pipe extending direction, and the disc sets firmly as an organic wholely with the breather pipe, and inside all communicates, and this disc is not the level, and whole all crooked down has certain angle, makes it be the umbrella-like to do benefit to the material and evenly spread.
3. A rotary multi-piece scraper disk thin film evaporator as set forth in claim 1, wherein: the shell is provided with antifriction bearing in the breather pipe department of passing its lower surface to do benefit to the belt pulley group and drive the breather pipe rotation, the breather pipe is the air inlet at the bottom, is first gas outlet at the top, and the breather pipe all is provided with rotary joint in being close to first gas outlet and air inlet department, the shell has seted up the second gas outlet in the shell upper surface department of first gas outlet top.
4. A rotary multi-piece scraper disk thin film evaporator as set forth in claim 1, wherein: the feeding pipe comprises a feeding main pipe and a feeding branch pipe, the feeding branch pipe is arranged above the disc, the feeding branch pipe extends out of the disc and is communicated with a vertically arranged feeding main pipe, the feeding main pipe extends out of the shell downwards, and a plurality of discharging holes are uniformly distributed on the lower surface of the feeding branch pipe along the length direction of the feeding main pipe.
5. A method of operating a rotary multi-disc scraper thin film evaporator according to claim 1 or 4, comprising the steps of: firstly, the disc is driven by a first motor to rotate, high-temperature steam is introduced into an air inlet to heat the whole disc, materials enter a feeding branch pipe through a feeding main pipe, under the rotation of the disc, the materials are spread on the disc through a discharging hole like a circular ring, and under the action of centrifugal force and gravity, the materials are uniformly spread on the disc; then controlling the contact time of the scraping plate and the disc by controlling the movement of the air cylinder, so as to control the evaporation drying time, when the air cylinder moves downwards, the cutter bar moves downwards, the scraping plate contacts with the disc to lift materials, and at the moment, the limit flange presses down the spring, and the spring is compressed; the scraping plate forms a certain angle with the axis of the disc so as to ensure that the scraping plate cannot be piled up; the disc rotates one circle, the material taking is completed, the cutter bar rotates under the drive of the second motor, the material falls into the discharge hole, the air cylinder retracts, the spring stretches, the cutter bar rises to the initial position under the action of the elastic force of the spring, rotates to the original position under the drive of the second motor, then the material spreading is carried out again, the next processing is carried out, and the like, and the circular processing is carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910095700.6A CN109529387B (en) | 2019-01-31 | 2019-01-31 | Rotary multi-piece type scraper disc thin film evaporator and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910095700.6A CN109529387B (en) | 2019-01-31 | 2019-01-31 | Rotary multi-piece type scraper disc thin film evaporator and working method thereof |
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| Publication Number | Publication Date |
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| CN109529387A CN109529387A (en) | 2019-03-29 |
| CN109529387B true CN109529387B (en) | 2023-12-15 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110639218A (en) * | 2019-09-10 | 2020-01-03 | 上海上诺精细化学有限公司 | Method and device for drying polymer fluid loss agent and improving bulk density |
| CN110763006A (en) * | 2019-12-03 | 2020-02-07 | 福建龙净环保股份有限公司 | Scraper device of disc dryer |
| CN113737184B (en) * | 2021-11-04 | 2022-03-29 | 清大国华环境集团股份有限公司 | Copper-containing etching waste liquid recovery device and copper-containing etching waste liquid recovery method |
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2019
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|---|---|---|---|---|
| CN103234334A (en) * | 2013-04-08 | 2013-08-07 | 马锡林 | Single-cone drier for feeding liquid continuously |
| CN104645690A (en) * | 2015-02-11 | 2015-05-27 | 合肥通用机械研究院 | Layered multi-filter disc filter |
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