CN111649579A - Heat conduction rake of vacuum rake dryer - Google Patents
Heat conduction rake of vacuum rake dryer Download PDFInfo
- Publication number
- CN111649579A CN111649579A CN202010341873.4A CN202010341873A CN111649579A CN 111649579 A CN111649579 A CN 111649579A CN 202010341873 A CN202010341873 A CN 202010341873A CN 111649579 A CN111649579 A CN 111649579A
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- Prior art keywords
- rake
- rod
- dryer
- vacuum
- heat
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Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
-
- 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
- F26B25/04—Agitating, stirring, or scraping devices
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention relates to a heat conduction rake of a vacuum rake dryer. A rake shaft is arranged in the dryer, a plurality of rake discs arranged in the radial direction are distributed in the rake shaft along the axial direction, the rake shaft and the rake discs are communicated and are both arranged in a hollow mode to form a cavity, and a heat medium is introduced into the cavity; the interior of the rake shaft and the interior of the rake disk are both divided into an inner layer and an outer layer by partition plates, a liquid medium is communicated in the outer layer, and a gas medium is communicated in the inner layer. The traditional rake rod is changed into the structural form of the rake disk, so that the heat transfer area is increased, and the heat efficiency is improved; the generation of scale on the inner cylinder wall is avoided, and the quality of a dried product is improved; the mixture is uniformly mixed, and the overall drying quality is improved; meanwhile, the scraper plates are arranged on the outer side edge of the rake disc, the scraper plates can further disturb materials and scrape the materials on the inner wall of the dryer, and the scraper plates are elastically arranged, so that the abrasion between the scraper plates and the inner wall of the dryer is reduced, and the service life of the scraper plates is prolonged.
Description
Technical Field
The invention relates to a heat conduction rake of a vacuum rake dryer, belonging to the technical field of dryers.
Background
The existing vacuum rake type drying rake rod has small heat transfer area; the spacing between the rake end and the inner tube wall is large, and the inner tube wall is easy to be adhered with thick dirt, which affects the heat efficiency, so the improvement is needed.
Disclosure of Invention
The invention aims to overcome the defects and provides a heat conduction rake of a vacuum rake dryer, which is reasonable in structure and capable of increasing the heat transfer area.
The technical scheme adopted by the invention is as follows: a heat conduction rake of a vacuum rake dryer is characterized in that a rake shaft (2) is arranged in a dryer (1), a plurality of rake discs (3) which are radially arranged are distributed in the rake shaft (2) along the axial direction, the rake shaft (2) and the rake discs (3) are communicated and are both arranged in a hollow mode to form a cavity, and a heat medium is introduced into the cavity;
the inner parts of the rake shaft (2) and the rake disc (3) are divided into an inner layer (7) and an outer layer (8) by a partition plate (9), a liquid medium is communicated in the outer layer (8), and a gas medium is communicated in the inner layer (7).
Furthermore, the liquid medium is accommodated in the outer layer (8) in a stationary manner, and the gas medium is arranged in the inner layer (7) in a flowing manner.
Furthermore, a plurality of scrapers (4) are arranged on the peripheral edge of the rake disc (3), the scrapers (4) are made of elastic materials, and one surface of the front end of each scraper (4) facing the inner wall of the dryer (1) is arranged to be arc-shaped corresponding to the contour of the inner wall of the dryer (1).
Furthermore, the scrapers (4) are circumferentially and uniformly distributed on the rake disc (3), and the scrapers (4) are connected to the rake disc (3) through springs (5).
Furthermore, a connecting rod (10) is arranged between the harrow disk (3) and the scraper (4), and the connecting rod (10) is in a telescopic rod structure form.
Further, the connecting rod (10) adopts the following structural form: the connecting rod (10) comprises a large rod (101) connected with the harrow disk (3) and a small rod (102) connected with the scraper (4);
the small rod (102) is arranged in the large rod (101) and can move up and down along the large rod (101), and at least one folding edge for preventing the large rod (101) and the small rod (102) from rotating when moving relatively is arranged at the corresponding position of the large rod (101) and the small rod (102).
Further, the surfaces of the large rod (101) and the small rod (102) are provided with damping structures for preventing the small rod (102) from moving up and down relative to the large rod (101);
the damping structure is as follows: grooves (11) are formed in the corresponding positions of the large rod (101) and the small rod (102), and corresponding magnets (12) with opposite poles attracting each other are arranged in the grooves of the large rod (101) and the small rod (102).
Furthermore, a plurality of reinforcing ribs (6) are arranged on the outer surface of the harrow disk (3).
Furthermore, the scraper (4) is made of stainless steel sheets.
Furthermore, the scrapers (4) are T-shaped, and 3-5 scrapers (4) are uniformly distributed on each rake disc (3) in the circumferential direction.
The invention has the advantages that: the traditional rake rod is changed into the structural form of the rake disk, so that the heat transfer area is increased, and the heat efficiency is improved; the generation of scale on the inner cylinder wall is avoided, and the quality of a dried product is improved; the mixture is uniformly mixed, and the overall drying quality is improved; meanwhile, the scraper plates are arranged on the outer side edge of the rake disc, the scraper plates can further disturb materials and scrape the materials on the inner wall of the dryer, and the scraper plates are elastically arranged, so that the abrasion between the scraper plates and the inner wall of the dryer is reduced, and the service life of the scraper plates is prolonged.
The rake shaft and the rake disc form an inner-layer structure and an outer-layer structure, the inner layer is internally provided with a gas medium, the outer layer is internally provided with a liquid medium, the gas medium is uniformly flowed, the heat medium is uniformly distributed, and the liquid medium has the buffer characteristic and is relatively slow to flow relative to the gas medium, so that the rake disc is as stable as possible in the working process, and therefore, the invention has the characteristics of uniform heat transfer and smooth operation.
The scraper disc and the scraper are connected in an elastic connection structure, so that the scraper is better matched with the inner wall of the dryer, and the working performance of the scraper is better realized.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the connecting rod of the present invention.
Fig. 3 is an enlarged view of a portion a in fig. 1.
FIG. 4 is a cross-sectional view of a large rod and a small rod.
In the figure, 1 is a drier, 2 is a harrow shaft, 3 is a harrow disk, 4 is a scraper, 5 is a spring, 6 is a reinforcing rib, 7 is an inner layer, 8 is an outer layer, 9 is a clapboard, 10 is a connecting rod, 11 is a groove, and 12 is a magnet;
101 is a large rod, 102 is a small rod.
Detailed Description
A heat conducting rake of a vacuum rake dryer is characterized in that a rake shaft 2 is arranged in a dryer 1, a plurality of rake discs 3 arranged in the radial direction are distributed in the rake shaft 2 along the axial direction, the rake shaft 2 and the rake discs 3 are communicated and are both arranged in a hollow mode to form a cavity, and a heat medium is introduced into the cavity;
the interior of the rake shaft 2 and the interior of the rake disc 3 are both divided into an inner layer 7 and an outer layer 8 by a partition plate 9, a liquid medium is communicated with the inner layer 8, and a gas medium is communicated with the inner layer 7.
Further, the liquid medium is accommodated in the outer layer 8 in a stationary manner, and the gaseous medium is arranged in the inner layer 7 in a flowing manner.
Further, a plurality of scrapers 4 are arranged on the peripheral edge of the rake disc 3, the scrapers 4 are made of elastic materials, and one surface of the front end of each scraper 4 facing the inner wall of the dryer 1 is set to be arc-shaped corresponding to the contour of the inner wall of the dryer 1.
Furthermore, the scrapers 4 are circumferentially and uniformly distributed on the rake disc 3, and the scrapers 4 are connected to the rake disc 3 through springs 5.
Further, a connecting rod 10 is arranged between the rake disc 3 and the scraper 4, and the connecting rod 10 is in a telescopic rod structure.
Further, the connecting rod 10 adopts the following structural form: the connecting rod 10 comprises a large rod 101 connected with the rake disc 3 and a small rod 102 connected with the scraper 4;
the small rod 102 is arranged in the large rod 101 and can move up and down along the large rod 101, and at least one folding edge for preventing the large rod 101 and the small rod 102 from rotating when moving relatively is arranged at the corresponding position of the large rod 101 and the small rod 102.
Further, the surfaces of the large rod 101 and the small rod 102 are provided with damping structures for preventing the small rod 102 from moving up and down relative to the large rod 101;
the damping structure is as follows: the big rod 101 and the small rod 102 are provided with grooves 11 at corresponding positions, and magnets 12 with opposite poles attracting each other are arranged in the grooves of the big rod 101 and the small rod 102.
Further, a plurality of reinforcing ribs 6 are arranged on the outer surface of the rake disc 3.
Further, the scraper 4 is made of a stainless steel sheet.
Furthermore, the scraping plates 4 are T-shaped, and 3-5 scraping plates 4 are uniformly distributed in the circumferential direction of each rake disc 3.
The rake shaft 2 and the rake disc 3 can be arranged in a hollow mode, and the hollow cavity formed by the rake shaft 2 and the rake disc 3 is communicated, so that a heat medium can enter the rake disc 3 through the rake shaft 2, and the heat exchange area is effectively increased.
The working process of the invention is as follows: when the invention is used, the inner layer 7 formed by the rake shaft 2 and the rake disc 3 is communicated with a gas medium, and the outer layer 8 formed by the rake shaft 2 and the rake disc 3 is provided with a liquid medium; both the gaseous medium and the liquid medium are thermal media, and in principle the temperature of the gaseous medium is higher than the temperature of the liquid medium; according to the invention, the gas medium communicated with the inner layer 7 is in a flowing state, and the liquid medium communicated with the outer layer 8 is in a relative static state, so that the heat conduction is more uniform and efficient by utilizing the flowing characteristic of the gas medium, and the impact of the rapid flowing of the medium on the outer surface of the rake disc 3 can be reduced by utilizing the relative static state of the liquid medium, so that the heat conduction rake can run more stably; therefore, the arrangement mode of the liquid medium and the gas medium provides favorable guarantee for improving the service performance of the invention.
The scraper 4 and the rake disc 3 are elastically connected through the arrangement of the spring 5 and the connecting rod 10, the rake disc 3 forms powerful support for the scraper 4 due to the existence of the spring 5, and the scraper 4 cannot incline due to the existence of the connecting rod 10 when the scraper 4 is supported, meanwhile, the connecting rod 10 adopts a telescopic rod structure, so that a certain elastic movement space is provided for the scraper 4; further, the connecting rod 10 is provided with a damping structure, and the connecting rod 10 further prevents the problem of instantaneous movement of the scraper 4 while forming a certain support for the scraper 4 and enabling the scraper 4 to have a certain elastic movement space, so that the service performance of the heat-conducting rake is further improved.
The invention will be further explained below for a better understanding of the invention: 1) the harrow bar of the invention is designed into a harrow disk 3, thus enlarging the heat transfer area.
2) The scraper 4 is arranged on the peripheral edge of each rake disc 3, the scraper 4 is preferably flexible, the distance between the scraper 4 and the inner cylinder wall is small, the dirt on the inner cylinder wall is easy to remove, and the mechanical abrasion is avoided.
3) The number of the scraping plates 4 is preferably 3-5; the scraper 4 is preferably in a T shape, which is beneficial to scraping off the dirt on the inner cylinder wall in a large area.
4) The flexible scraper 4 is designed to be a thin stainless steel sheet at the front end and is connected with the harrow disk 3 by a spring 5.
5) The rake disc 3 is hammer-shaped, a hollow heat medium is introduced into the hollow rake disc, and the hollow rake disc is used for heating materials and improving the drying efficiency.
6) The hammer-like rake disc 3 is designed to be spiral, the spiral directions of two adjacent rake discs 3 are opposite, and when a plurality of rake discs 3 operate, the material can be extruded and stirred, and the mixing and drying can be uniform.
7) The harrow disk 2 is made of corrosion-resistant material, preferably stainless steel material; the quantity of the harrow disk 3 is determined according to the specification and the material characteristics of the dryer.
Claims (10)
1. A heat conduction rake of a vacuum rake dryer is characterized in that a rake shaft (2) is arranged in a dryer (1), a plurality of rake discs (3) which are arranged in the radial direction are distributed in the rake shaft (2) along the axial direction, the rake shaft (2) and the rake discs (3) are communicated and are both arranged in a hollow mode to form a cavity, and a heat medium is introduced into the cavity;
the inner parts of the rake shaft (2) and the rake disc (3) are divided into an inner layer (7) and an outer layer (8) by a partition plate (9), a liquid medium is communicated in the outer layer (8), and a gas medium is communicated in the inner layer (7).
2. A vacuum rake dryer thermally conductive rake according to claim 1, characterized in that the liquid medium is accommodated in a stationary manner in the outer layer (8) and the gaseous medium is arranged in a flowing manner in the inner layer (7).
3. The heat conducting harrow of vacuum harrow type dryer of claim 1, wherein a plurality of scrapers (4) are arranged on the peripheral edge of the harrow plate (3), the scrapers (4) are made of elastic material, and the surface of the front end of each scraper (4) facing the inner wall of the dryer (1) is arranged in a circular arc shape corresponding to the contour of the inner wall of the dryer (1).
4. The heat-conducting rake of the vacuum rake dryer according to claim 3, wherein the scrapers (4) are circumferentially and uniformly distributed on the rake disc (3), and the scrapers (4) are connected to the rake disc (3) through springs (5).
5. The heat conducting rake of vacuum rake dryer according to claim 4, characterized in that a connecting rod (10) is arranged between the rake disc (3) and the scraper (4), and the connecting rod (10) is in the form of a telescopic rod structure.
6. A vacuum rake dryer thermally conductive rake as claimed in claim 5, characterized in that the connecting rod (10) takes the following structural form: the connecting rod (10) comprises a large rod (101) connected with the harrow disk (3) and a small rod (102) connected with the scraper (4);
the small rod (102) is arranged in the large rod (101) and can move up and down along the large rod (101), and at least one folding edge for preventing the large rod (101) and the small rod (102) from rotating when moving relatively is arranged at the corresponding position of the large rod (101) and the small rod (102).
7. A heat conducting rake of vacuum rake dryer according to claim 6, characterized in that the surface of the big rod (101) and the small rod (102) is provided with a damping structure for preventing the small rod (102) from moving up and down relative to the big rod (101);
the damping structure is as follows: grooves (11) are formed in the corresponding positions of the large rod (101) and the small rod (102), and corresponding magnets (12) with opposite poles attracting each other are arranged in the grooves of the large rod (101) and the small rod (102).
8. The heat conducting rake of vacuum rake dryer as claimed in claim 1, characterized in that the outer surface of the rake disc (3) is provided with a plurality of ribs (6).
9. The heat-conducting rake of vacuum rake dryer as claimed in claim 1, characterized in that said scraper (4) is made of stainless steel sheet.
10. The heat-conducting rake of the vacuum rake dryer according to claim 2, wherein the scrapers (4) are T-shaped, and 3-5 scrapers (4) are circumferentially and uniformly arranged on each rake disk (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010341873.4A CN111649579A (en) | 2020-04-27 | 2020-04-27 | Heat conduction rake of vacuum rake dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010341873.4A CN111649579A (en) | 2020-04-27 | 2020-04-27 | Heat conduction rake of vacuum rake dryer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111649579A true CN111649579A (en) | 2020-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010341873.4A Pending CN111649579A (en) | 2020-04-27 | 2020-04-27 | Heat conduction rake of vacuum rake dryer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111649579A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112923665A (en) * | 2021-02-04 | 2021-06-08 | 临海市泰通医化设备有限公司 | Quick-drying rake dryer |
| CN115479451A (en) * | 2021-06-16 | 2022-12-16 | 天华化工机械及自动化研究设计院有限公司 | Horizontal continuous mixing type dryer |
| CN117490372A (en) * | 2023-12-22 | 2024-02-02 | 江苏天力干燥工程有限公司 | Rake type dryer |
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| US20090077825A1 (en) * | 2007-07-17 | 2009-03-26 | Semiconductor Analytical Services, Inc. (Sas Inc.) | Apparatus and method for cleaning and drying solid objects |
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| CN208333024U (en) * | 2018-05-31 | 2019-01-04 | 青岛捷能高新技术有限责任公司 | Disk vacuum drier with coil pipe |
| CN208443100U (en) * | 2018-06-15 | 2019-01-29 | 常州市益民干燥设备有限公司 | A kind of vacuum blade dryer |
| CN208720703U (en) * | 2018-08-10 | 2019-04-09 | 滨海明昇化工有限公司 | A kind of drying and dehydrating device |
| CN208952635U (en) * | 2018-09-19 | 2019-06-07 | 海门德思行药业科技有限公司 | It is a kind of to prepare n, the washing dry integrated machine of n- biphenyl diamine |
| CN209857602U (en) * | 2018-10-31 | 2019-12-27 | 江苏搏斯威化工设备工程有限公司 | Hollow blade dryer |
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2020
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| CN2316612Y (en) * | 1997-11-04 | 1999-04-28 | 山东省肥城市轻工机械厂 | Changeable tray distance drier |
| US20090077825A1 (en) * | 2007-07-17 | 2009-03-26 | Semiconductor Analytical Services, Inc. (Sas Inc.) | Apparatus and method for cleaning and drying solid objects |
| CN102216717A (en) * | 2008-11-06 | 2011-10-12 | 株式会社奈良机械制作所 | Heat exchanging apparatus for granular and powdery material and manufacturing method therefor |
| CN203295205U (en) * | 2013-04-16 | 2013-11-20 | 江苏中能硅业科技发展有限公司 | Fluidized bed reactor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112923665A (en) * | 2021-02-04 | 2021-06-08 | 临海市泰通医化设备有限公司 | Quick-drying rake dryer |
| CN115479451A (en) * | 2021-06-16 | 2022-12-16 | 天华化工机械及自动化研究设计院有限公司 | Horizontal continuous mixing type dryer |
| CN115479451B (en) * | 2021-06-16 | 2023-11-24 | 天华化工机械及自动化研究设计院有限公司 | Horizontal continuous mixing drier |
| CN117490372A (en) * | 2023-12-22 | 2024-02-02 | 江苏天力干燥工程有限公司 | Rake type dryer |
| CN117490372B (en) * | 2023-12-22 | 2024-05-14 | 江苏天力干燥工程有限公司 | Rake type dryer |
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Application publication date: 20200911 |
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