A drum and flight dryer
By incorporating an inclined material pool and combining it with spray pipes, scrapers, and other structures in the drum scraper dryer, the problems of material sedimentation and labor-intensive cleaning are solved, achieving efficient drying and convenient cleaning, reducing the labor intensity of workers, and improving the protection and service life of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGYIN KAI LEFENG ENVIRONMENTAL ENG TECH CO LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-06-26
AI Technical Summary
In existing drum scraper dryers, materials tend to accumulate at the bottom of the tank, making cleaning tedious and labor-intensive, and increasing the workload for workers.
By setting the bottom of the material pool to be inclined, and combining the design of the spray pipe, scraper, conveying pipe and auger, the material is guided by gravity to gather and evenly adhere to the surface of the roller. The scraper efficiently scrapes off and conveys the material, thus optimizing the material handling process.
It reduces material buildup, improves drying efficiency, reduces cleaning difficulty, alleviates labor intensity for workers, and extends equipment lifespan by protecting against external contamination and personal injury through a protective casing.
Smart Images
Figure CN224415572U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of chemical technology, and in particular to a drum scraper dryer. Background Technology
[0002] In industrial production, rotary drum scraper dryers, as a highly efficient continuous drying equipment, are widely used in chemical, food, and pharmaceutical fields, especially suitable for processing materials with poor flowability such as pastes, slurries, and mud. Their core working principle involves the rotation of the drum, causing the material to adhere evenly to its outer surface. A heat medium, such as steam or hot water, is then introduced inside the drum to heat and dry the material. The dried material is then scraped off by scrapers, completing the entire drying process.
[0003] In existing rotary drum dryers, the material supply structure typically employs a material pool design with a horizontal bottom. Specifically, the lower part of the drum is immersed in the material pool. As the drum slowly rotates under the drive of the drive device, its outer surface comes into full contact with the material in the pool. Utilizing the material's own viscosity and the rotational force of the drum, the material is evenly "wetted" and lifted, forming a material layer of a certain thickness adhering to the drum surface.
[0004] Regarding the aforementioned technologies, the inventors believe that some materials tend to deposit at the bottom of the pool, and the deposited materials adhere tightly to the bottom and walls of the pool. The horizontal bottom design makes it difficult for cleaning tools to reach the corner areas. In addition, the high viscosity of the materials makes the cleaning process cumbersome and laborious, increasing the labor intensity of workers. Utility Model Content
[0005] The purpose of this application is to provide a drum scraper dryer to improve the problem that some materials are prone to sedimentation at the bottom of the tank, and the cleaning process is cumbersome and laborious.
[0006] This application provides a technical solution for a drum scraper dryer, which adopts the following:
[0007] A rotary drum scraper dryer includes a base frame with a material pool at its bottom. A drum is rotatably mounted on the base frame. A drive unit for rotating the drum is located at one end of the base frame. A spray pipe is connected to the material pool along the length of the drum on one side of the base frame. A fixed plate is located on one side of the base frame, with a scraper on its top surface that fits against the outer wall of the drum. A conveying pipe is located below the scraper along the length of the drum on the base frame. A second drive unit is located at one end of the conveying pipe, and a spiral rod is located at the output end of the second drive unit inside the conveying pipe. A discharge pipe is also provided on the conveying pipe.
[0008] By adopting the above technical solution, the bottom of the material pool is set to be inclined, and gravity is used to guide the material to gather to one side, reducing the amount and area of material deposition at the bottom of the pool. At the same time, the spray pipe allows the material to adhere more evenly to the surface of the roller, improving the drying effect. In addition, the cooperation of the scraper, conveying pipe, drive component 2 and screw rod realizes the efficient scraping and conveying of dried material. The overall structure optimizes the material handling process, reduces the difficulty of cleaning, and reduces the labor intensity of workers.
[0009] Optionally, the base frame is provided with a protective cover, the roller is located inside the protective cover, the protective cover is hinged with a plurality of opening and closing plates, and the opening and closing plates are provided with a plurality of fixing screws that are threadedly fixed to the protective cover.
[0010] By adopting the above technical solution, the protective cover encloses the roller, effectively preventing external dust and debris from entering the equipment and reducing contamination of materials. It also serves as a safety protection measure, preventing operators from accidentally contacting the rotating roller. The hinged opening and closing plate and the threaded fixing screw ensure the sealing of the protective cover and facilitate quick opening when the equipment needs to be inspected or maintained, thus balancing protection and ease of operation.
[0011] Optionally, the opening and closing plate is provided with a light-transmitting plate for easy observation.
[0012] By adopting the above technical solution, the light-transmitting plate provides a window for operators to observe the internal operation of the drum and materials, such as drying and scraping, making it easier to detect abnormalities in the equipment operation in a timely manner.
[0013] Optionally, a pair of locking plates are provided on one side of the opening and closing plate, and the light-transmitting plate is embedded in the locking plates. The pair of locking plates are provided with a number of fixing screws to secure them together.
[0014] By adopting the above technical solution, the structure of a pair of locking plates and fixing screws can firmly embed the light-transmitting plate into the opening and closing plate, and at the same time facilitate the replacement of the light-transmitting plate when it is damaged, resulting in low maintenance costs.
[0015] Optionally, a handle is provided on the side of the light-transmitting plate away from the roller.
[0016] By adopting the above technical solution, the handle provides the operator with a convenient point of force to open and close the switch plate, making the opening and closing operation of the switch plate more labor-saving and convenient. Especially when the switch plate needs to be opened frequently for maintenance or adjustment, it can effectively improve the operating efficiency.
[0017] Optionally, the top surface of the fixed plate is provided with a fixed seat, the fixed seat is rotatably provided with a rotating shaft, the scraper is located on the outer wall of the rotating shaft, and a connecting plate is provided at one end of the rotating shaft; the fixed plate is rotatably provided with a telescopic drive, and the output end of the telescopic drive is rotatably connected to the end of the connecting plate away from the rotating shaft to control the scraper angle.
[0018] By adopting the above technical solution, the scraper angle can be flexibly adjusted through the cooperation of the fixed seat, rotating shaft, connecting plate and telescopic drive component. The operator can accurately adjust the fit between the scraper and the outer wall of the drum according to the properties of the material and the state after drying. This helps to completely scrape off the dried material, reduce material residue that affects the subsequent drying effect, and also reduce excessive wear between the scraper and the drum, thus extending the service life of the equipment.
[0019] Optionally, the outer wall of the rotating shaft is provided with several support rods that are fixedly connected to the scraper.
[0020] By adopting the above technical solution, when the scraper contacts the roller to scrape off the material, the support rod can effectively disperse the force on the scraper and stably support the scraper.
[0021] Optionally, the scraper has a peeling bevel on the side facing away from the roller.
[0022] By adopting the above technical solution, the peeling slope can guide the scraped material to slide smoothly down, improve the scraping effect, and reduce the accumulation of material on the scraper.
[0023] In summary, this application includes at least one of the following beneficial technical effects of the drum scraper dryer:
[0024] 1. The bottom of the material pool is set at an incline, using gravity to guide the material to one side, reducing the amount and area of material deposited at the bottom of the pool; at the same time, the spray pipe allows the material to adhere more evenly to the surface of the roller, improving the drying effect; in addition, the cooperation of the scraper, conveying pipe, drive component 2 and screw rod realizes the efficient scraping and conveying of dried material. The overall structure optimizes the material handling process, reduces the difficulty of cleaning, and reduces the labor intensity of workers.
[0025] 2. The protective cover encloses the roller, effectively preventing external dust and debris from entering the equipment and reducing contamination of materials. It also serves as a safety protection measure, preventing operators from accidentally contacting the rotating roller. The hinged opening and closing plates and the threaded fixing screws ensure the airtightness of the protective cover while allowing for quick opening when the equipment needs to be inspected or maintained, thus balancing protection and ease of operation.
[0026] 3. Through the cooperation of the fixed base, rotating shaft, connecting plate and telescopic drive, the scraper angle can be flexibly adjusted. The operator can accurately adjust the fit between the scraper and the outer wall of the drum according to the properties of the material and the state after drying. This helps to completely scrape off the dried material, reduce material residue that affects the subsequent drying effect, and also reduce excessive wear between the scraper and the drum, thus extending the service life of the equipment. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the overall structure of the drum scraper dryer;
[0028] Figure 2 This is a schematic diagram of the side structure of a drum scraper dryer;
[0029] Figure 3 yes Figure 2 An enlarged schematic diagram of the structure at point A in the middle.
[0030] In the diagram, 1. Base frame; 11. Material pool; 2. Roller; 21. Drive component one; 3. Spray pipe; 4. Fixed plate; 41. Scraper; 411. Peeling slope; 5. Conveying pipe; 51. Drive component two; 52. Spiral rod; 53. Discharge pipe; 6. Protective cover; 61. Opening and closing plate; 611. Fixing screw; 62. Light-transmitting plate; 621. Handle; 7. Clamping plate; 71. Fixing screw; 8. Fixed base; 81. Rotating shaft; 82. Connecting plate; 83. Telescopic drive component; 9. Support rod. Detailed Implementation
[0031] The following is in conjunction with the appendix Figure 1 - Appendix Figure 3 This application will be described in further detail below.
[0032] A drum scraper dryer, as described in the following figure Figure 1 , Figure 2 The system includes a base frame 1, which is a metal frame structure. A material tank 11 is fixedly installed on the top of the base frame 1 by welding. The material tank 11 is a rectangular trough with an open top, used to hold the material to be dried. The bottom surface of the material tank 11 is inclined, and the inclination angle can be adjusted according to the actual material flowability, generally between 10° and 20°, so that the material can be gathered to one side of the material tank 11 and the sedimentation can be reduced. A discharge port (not shown in the figure) is provided on the lower side of the material tank 11 to facilitate cleaning of sediment.
[0033] Reference Figure 1 , Figure 2The base frame 1 of the spray pipe 3 is rotatably connected to the roller 2 by a bearing. The roller 2 is a hollow cylindrical metal cylinder with journals at both ends. The journals are connected to the base frame 1 by bearings. The base frame of the spray pipe 3 is located at one end of the roller 2 and is fixed with a drive component 21 that drives the roller 2 to rotate by bolts. The drive component 21 is a geared motor, and its output shaft is connected to one end of the roller 2 through gear transmission.
[0034] Reference Figure 1 , Figure 2 The base of the spray pipe 3 is located on one side of the roller 2 and is fixed to the material tank 11 by a bracket along the length of the roller 2. The spray pipe 3 is a metal round pipe with several spray holes on the pipe wall. One end of the pipe is connected to the pump (not shown in the figure) in the material tank 11 through a pipe.
[0035] Reference Figure 1 , Figure 2 The base frame of the spray pipe 3 is located on one side of the roller 2 and is fixed with a fixed plate 4 by bolts. The fixed plate 4 is a metal plate. The top surface of the fixed plate 4 of the spray pipe 3 is fixed with a scraper 41 that fits against the outer wall of the roller 2 by bolts. Specifically, the top surface of the fixed plate 4 of the spray pipe 3 is fixed with a fixed seat 8 by bolts. The fixed seat 8 of the spray pipe 3 is rotatably mounted with a rotating shaft 81 by bearings. The rotating shaft 81 is a metal round shaft. The scraper 41 of the spray pipe 3 is located on the outer wall of the rotating shaft 81 and is fixedly connected to the rotating shaft 81 by welding.
[0036] Reference Figure 2 , Figure 3 One end of the rotating shaft 81 of the spray pipe 3 is fixedly equipped with a connecting plate 82 by welding. The connecting plate 82 is a metal plate. The fixed plate 4 of the spray pipe 3 is equipped with a telescopic drive component 83 by hinge. The telescopic drive component 83 is a hydraulic cylinder or a pneumatic cylinder. The output end of the telescopic drive component 83 of the spray pipe 3 is rotatably connected to the end of the connecting plate 82 away from the rotating shaft 81 by a pin to control the angle of the scraper 41. The telescopic movement of the telescopic drive component 83 drives the connecting plate 82 to swing, thereby causing the rotating shaft 81 to rotate, so as to adjust the fit between the scraper 41 and the roller 2.
[0037] Reference Figure 2 , Figure 3 The outer wall of the rotating shaft 81 of the spray pipe 3 is provided with several support rods 9 that are fixedly connected to the scraper 41. The support rods 9 are metal rods, which enhance the structural strength of the scraper 41 by forming a triangular support with the scraper 41. The scraper 41 of the spray pipe 3 is provided with a peeling slope 411 on the side away from the roller 2. The peeling slope 411 is an inclined surface formed by processing the edge of the scraper 41 away from the roller 2, which facilitates the smooth fall of the scraped material.
[0038] Reference Figure 1The base frame 1 of the spray pipe 3 is located below the scraper 41 and is fixed to the conveying pipe 5 along the length of the roller 2 by bolts. The conveying pipe 5 is a metal round pipe with closed ends and a feed port (not shown in the figure) at the top to receive the dried material falling from the scraper 41. One end of the spray pipe 3 and the conveying pipe 5 is fixed to the drive component 2 51 by bolts. The drive component 2 51 is a motor. The output end of the spray pipe 3 and the drive component 2 51 passes through the bearing at the end of the conveying pipe 5 and is fixed to the spiral rod 52 by coupling inside the conveying pipe 5. The spiral rod 52 is a metal spiral conveying blade that is clearance-fitted with the inner wall of the conveying pipe 5. The bottom end of the spray pipe 3 and the conveying pipe 5 is near the drive component 2 51 and is fixed to the discharge pipe 53 by welding. The discharge pipe 53 is a metal round pipe that communicates with the inside of the conveying pipe 5 and is used to discharge the material inside the conveying pipe 5.
[0039] Reference Figure 1 The base 1 of the spray pipe 3 is fixed with a protective cover 6 by bolts. The protective cover 6 is a metal shell. The roller 2 of the spray pipe 3 is located inside the protective cover 6. Several opening and closing plates 61 are hinged on one side edge of the protective cover 6 of the spray pipe 3. In this embodiment, four are preferred. The opening and closing plates 61 are metal plates used to open or close the protective cover 6. The protective cover 6 is provided with corresponding openings. The opening and closing plates 61 of the spray pipe 3 are fixed with several fixing screws 611 that are threaded to the protective cover 6. The opening and closing plates 61 and the protective cover 6 are provided with threaded holes at corresponding positions. The opening and closing plates 61 and the protective cover 6 can be fixed to the protective cover 6 by tightening the fixing screws 611.
[0040] Reference Figure 3 The spray pipe 3 opening and closing plate 61 is provided with a light-transmitting plate 62 for easy observation. The light-transmitting plate 62 is made of tempered glass and is used to observe the internal situation when the equipment is running. A pair of locking plates 7 are fixedly installed on one side of the spray pipe 3 opening and closing plate 61 by welding. The light-transmitting plate 62 of the spray pipe 3 is embedded in the locking plate 7. The pair of spray pipe 3 locking plates 7 are provided with several fixing screws 71. The fixing screws 71 pass through the two locking plates 7 and are tightened, so that the locking plates 7 clamp and fix the light-transmitting plate 62. A handle 621 is fixedly installed on the side of the spray pipe 3 light-transmitting plate 62 away from the roller 2 by adhesive, so that the operator can open and close the opening and closing plate 61.
[0041] The implementation principle of this application embodiment is as follows:
[0042] In actual use, the material in the material pool 11 gathers to a lower position under the action of gravity to reduce sedimentation. During cleaning, the sediment can be discharged through the discharge port. The pump in the material pool 11 transports the material to the spray pipe 3, which sprays it evenly onto the surface of the rotating drum 2 through the spray holes to form a material layer. The heat medium in the drum 2 heats and dries the material. The drive component 1 21 drives the drum 2 to rotate. The scraper 41 on the fixed plate 4 is in contact with the drum 2 to scrape off the dried material. The angle of the scraper 41 can be adjusted by the telescopic drive component 83 to ensure thorough scraping. The support rod 9 on the rotating shaft 81 enhances the strength of the scraper 41. The scraped material enters the lower conveying pipe 5. The drive component 2 51 drives the spiral rod 52 to transport the material to the discharge pipe 53 for discharge. This helps to reduce material deposition and deposition area for easy cleaning.
[0043] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.
Claims
1. A drum scraper dryer, comprising a base frame (1), characterized in that: The base frame (1) is provided with a material pool (11), the bottom surface of which is inclined; a roller (2) is rotatably mounted on the base frame (1), and a driving component (21) for driving the roller (2) to rotate is provided at one end of the base frame (1); a spray pipe (3) is provided on one side of the base frame (1) along the length of the roller (2) and connected to the material pool (11); the base frame (1) is located on one side of the roller (2). A fixed plate (4) is provided, and a scraper (41) that fits against the outer wall of the roller (2) is provided on the top surface of the fixed plate (4). A material conveying pipe (5) is provided below the scraper (41) along the length of the roller (2). A second driving component (51) is provided at one end of the material conveying pipe (5). A spiral rod (52) is provided at the output end of the second driving component (51) inside the material conveying pipe (5). A discharge pipe (53) is provided on the material conveying pipe (5).
2. The drum scraper dryer according to claim 1, characterized in that: The base frame (1) is provided with a protective cover (6), the roller (2) is located inside the protective cover (6), the protective cover (6) is hinged with a plurality of opening and closing plates (61), and the opening and closing plates (61) are provided with a plurality of fixing screws (611) that are threadedly fixed to the protective cover (6).
3. A drum scraper dryer according to claim 2, characterized in that: The opening and closing plate (61) is provided with a light-transmitting plate (62) for easy observation.
4. A drum scraper dryer according to claim 3, characterized in that: A pair of locking plates (7) are provided on one side of the opening and closing plate (61), and the light-transmitting plate (62) is embedded in the locking plate (7). A number of fixing screws (71) are provided on the pair of locking plates (7) to secure them together.
5. A drum scraper dryer according to claim 4, characterized in that: A handle (621) is provided on the side of the light-transmitting plate (62) away from the roller (2).
6. A drum scraper dryer according to claim 1, characterized in that: The fixed plate (4) is provided with a fixed seat (8) on its top surface. The fixed seat (8) is rotatably provided with a rotating shaft (81). The scraper (41) is located on the outer wall of the rotating shaft (81). A connecting plate (82) is provided at one end of the rotating shaft (81). The fixed plate (4) is rotatably provided with a telescopic drive (83). The output end of the telescopic drive (83) is rotatably connected to the end of the connecting plate (82) away from the rotating shaft (81) to control the angle of the scraper (41).
7. A drum scraper dryer according to claim 6, characterized in that: The outer wall of the rotating shaft (81) is provided with several support rods (9) that are fixedly connected to the scraper (41).
8. A drum scraper dryer according to claim 7, characterized in that: The scraper (41) has a peeling bevel (411) on the side away from the roller (2).