Energy-saving ultrahigh-temperature spray dryer
By installing components such as resistor barrels, conical guide diffusion blocks and annular spray tubes in the drying tank, combined with heater and fan filter, the problems of low cutting efficiency, blockage and poor cleanliness of existing spray dryers are solved, and uniform drying and efficient energy-saving effects are achieved.
Patent Information
- Application Number
- CN202422467120.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-10-12
AI Technical Summary
The existing centrifugal spray dryers have problems such as low cutting efficiency, easy blockage, material wall hanging, uneven drying and poor cleanliness, especially the drying effect caused by uneven hot air distribution.
The material resisting barrel, conical guide diffusion block, annular spray tube and heater are used in the drying tank to achieve uniform spraying and heating of raw materials, combined with fan filter and heater, ensure uniform distribution of hot air and improve drying efficiency, and use the spiral blades and cleaning scrapers to prevent clogging.
The uniform drying of raw materials is achieved, the drying efficiency is improved, blockage and material confusion is avoided, and the drying quality and cleanliness are ensured.
Smart Images
Figure CN223248763U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of drying devices, and in particular relates to an energy-saving ultra-high temperature spray dryer. Background Art
[0002] A centrifugal spray dryer utilizes a centrifugal atomizer to dry liquid materials and is one of the most widely used dryers in industrial production. Spray drying is the most widely used process in the liquid forming and drying industries. It is ideal for producing powdered and granular products from solutions, emulsions, suspensions, and pumpable pastes. Therefore, spray drying is an ideal process when precise standards for particle size distribution, residual moisture content, bulk density, and particle shape are met. However, existing centrifugal spray dryers suffer from low material discharge efficiency and are prone to clogging during discharge, which affects the stability and efficiency of the drying process, increases operating time, and leads to high energy consumption. Furthermore, they lack cyclic scraping of the inner wall of the dryer, which results in significant material adhesion, affecting the drying effect and easily causing material mix-up during secondary use. Furthermore, the air intake fails to filter and remove dust, resulting in poor cleanliness during drying.
[0003] To this end, an energy-saving and emission-reducing centrifugal spray dryer with the announcement number "CN214971809U" includes a body, a discharge pipe is fixedly connected to the bottom of the body, and a discharge mechanism is provided inside the body. In this energy-saving and emission-reducing centrifugal spray dryer, the vertical cylinder can slide longitudinally while the vertical rod rotates, so that the auger can drive the auger to slide in the vertical tube when the material is rotated out, thereby greatly improving the discharge efficiency and avoiding the blockage of the discharge, thereby ensuring the stability and efficiency of the drying process, shortening the working time, and achieving energy conservation and emission reduction. Under the action of spring 1, the scraper drives the rubber strip to press against the inner wall of the body. When the motor drives the vertical rod to reverse, the inner wall of the body can be scraped cyclically, thereby avoiding the phenomenon of material hanging on the wall, improving the drying effect, and avoiding the confusion of materials during secondary use. It plays the role of filtering and dust removal during air intake, ensuring the cleanliness of the material during drying, and facilitating the subsequent cleaning and replacement of the activated carbon filter to ensure the filtering effect.
[0004] However, for the above-mentioned energy-saving and emission-reduction centrifugal spray dryer, although the coordination between the machine body, nozzle, feed pipe, heater, fan and filter mechanism enables the device to filter and remove dust when the air is inlet through the setting of the activated carbon filter, thereby ensuring the cleanliness of the material during drying, the following more obvious defects still exist during use: However, the hot air generated is only blown into the interior from one side of the machine body to dry the falling raw materials of the sprayed raw materials. However, since the sprayed raw materials are sprayed in a fan shape to the surrounding areas, the heat entering from one side cannot dry the raw materials sprayed to the surrounding areas, and the temperature of the hot air will gradually decrease when flowing downward, and the drying effect cannot be achieved. Utility Model Content
[0005] The purpose of the utility model is to provide an energy-saving ultra-high temperature spray dryer to solve the problems raised in the above background technology.
[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an energy-saving ultra-high temperature spray dryer, comprising:
[0007] A drying tank body is provided, wherein a spray head for spraying raw materials in all directions is installed on the top of the drying tank body through a feed pipe. A material blocking cylinder is provided inside the drying tank body for blocking the raw materials sprayed by the spray head. A conical material guide and diffusion block is vertically provided inside the material blocking cylinder for guiding and dispersing the sprayed and falling raw materials. A lower hopper is provided at the bottom end of the inner side of the drying tank body for heating and drying the falling raw materials.
[0008] An annular spray pipe is provided with drying spray pipe heads equidistantly arranged around the bottom of the annular spray pipe and obliquely penetrate the inner part of the material blocking cylinder. The two ends of the upper part of the annular spray pipe are connected to the heater arranged at the end of the drying tank body through a connecting air pipe, and the input end of the heater is connected to the fan output port arranged at the end of the drying tank body through a pipeline.
[0009] Preferably, the feed pipe is fixed at the center of the upper end of the drying tank, and the spray head is fixed at one end of the feed pipe located inside the drying tank. The raw materials can be sprayed evenly around to facilitate drying.
[0010] Preferably, the output end of the fan is connected to a T-shaped air outlet pipe, and both ends of the air outlet pipe are provided with a pre-filter for filtering the gas, and the output end of the pre-filter is connected to the heaters provided on both sides of the end of the drying tank through a pipe, so as to achieve filtering and disposal of the external gas and avoid contamination of the dried raw materials.
[0011] Preferably, a fixed cross bar is provided laterally at the upper end of the inner part of the material blocking cylinder, and the top of the conical material guiding and diffusion block is fixed vertically downward at the center position of the bottom end of the fixed cross bar through a connecting rod, so that the falling raw materials can be gradually scattered around for heating and drying.
[0012] Preferably, the conical material guiding and diffusion block includes three conical cylindrical blocks whose guiding areas are successively increased from top to bottom. The three conical cylindrical blocks are vertically fixed from small to large by connecting rods to accelerate the efficiency of heating and drying the raw materials.
[0013] Preferably, heating plates for heating and drying the falling and rolling raw materials are evenly embedded on the inner surface of the lower hopper, and a discharge pipe is provided at the bottom of the lower hopper to discharge the raw materials after drying.
[0014] Preferably, a receiving trough is provided at the bottom of the hopper, and a servo motor is provided in the conical block provided in the middle part of the inner side of the trough. The vertical transmission connection on the rotating shaft of the servo motor is provided with a feeding spiral blade extending to the inside of the discharge pipe. The top of the feeding spiral blade is provided with a cleaning scraper with a V-shaped structure for scraping and cleaning the inner wall of the hopper, thereby realizing scraping and cleaning of the raw materials on the inner wall of the hopper.
[0015] Preferably, suction and discharge pumps are provided on both sides of the outside of the receiving trough and at the bottom end of the drying tank body, and the discharge pipes connected to the output ends of the suction and discharge pumps extend through both sides of the outside of the drying tank body, so that the dried raw materials can be extracted and discharged in time after being discharged to prevent the accumulation of raw materials.
[0016] Compared with the existing technology, the technical effects and advantages of the utility model are as follows: the energy-saving ultra-high temperature spray dryer, through the awakening spray pipe arranged on the outside of the drying tank body, the bottom of the annular spray pipe is connected to the drying spray pipe head which is arranged around the material blocking barrel, and the heater and pre-filter are connected on the pipeline between the annular spray pipe and the fan, so that the raw materials containing moisture are evenly sprayed around and sprayed into the material blocking barrel by the feed pipe and the spray head. At this time, the fan is used to inhale the external gas through the pre-filter for filtration, and the heater is used to heat the gas to remove moisture. The heated gas is transported to the annular spray pipe and is evenly sprayed around the inside of the material blocking barrel by the evenly arranged drying spray pipe heads, so that the raw materials evenly falling down on all sides are dried and blown by the hot gas, so that the raw materials falling on all sides can penetrate between the raw materials for spraying and drying, thereby realizing uniform drying of the raw materials, and further improving the efficiency of drying and blowing of the raw materials.
[0017] By using a roughly small conical material guide diffusion fast, the raw materials to be sprayed and dried are blown on the conical material guide diffusion fast and elastically diffused to the surrounding areas, so that the raw materials can be spray-dried again, and the evenly dried raw materials fall evenly in a fan shape onto the inner wall of the discharge hopper, and then the evenly set heating plates are used to heat and dry the raw materials rolling downward in all positions, so that the raw materials can be effectively spray-dried, and the quality of raw material drying can be further improved. In the process of raw material falling, the cleaning scraper and the rotation of the discharge spiral blade can be used to clean the residual raw materials on the inner wall of the discharge hopper, and after the raw materials enter the discharge pipe, the rotation of the discharge spiral blade can be used to allow the raw materials to be quickly discharged into the receiving trough, avoiding the phenomenon of blockage caused by accumulation of discharge materials. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a structural diagram of the utility model;
[0019] Figure 2 This is a schematic diagram of the internal structure of the drying tank of the utility model from a top view;
[0020] Figure 3 This is a schematic diagram of the structure of the utility model when cutting materials.
[0021] In the figure: 1. Drying tank body; 2. Feed pipe; 3. Spray head; 4. Material blocking cylinder; 5. Conical material guide diffusion block; 6. Discharge hopper; 7. Annular spray pipe; 8. Drying spray pipe head; 9. Heater; 10. Fan; 11. Air outlet pipe; 12. Pre-filter; 13. Fixed cross bar; 14. Heating plate; 15. Discharge pipe; 16. Material receiving trough; 17. Servo motor; 18. Discharge spiral blade; 19. Cleaning scraper; 20. Suction and discharge pump. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0023] See also Figure 1-3 The utility model provides a technical solution: an energy-saving ultra-high temperature spray dryer, comprising:
[0024] The drying tank body 1 is provided with a spray head 3 for spraying the raw materials to the surrounding areas through a feed pipe 2 at the top of the drying tank body 1. The spray head 3 can spray the raw materials evenly to the surrounding areas, which is beneficial to the spraying, heating and drying process of the raw materials. The drying tank body 1 is provided with a material blocking cylinder 4 for blocking the raw materials sprayed by the spray head 3, limiting the range and distance of the sprayed raw materials to avoid the raw materials being unable to be sprayed, heated and dried if they are far away. A conical material guide diffusion block 5 is vertically provided in the material blocking cylinder 4 for guiding and dispersing the sprayed and falling raw materials, so that the sprayed raw materials rebound and diffuse outward through the conical material guide diffusion block 5 to perform the function of spray drying. The inner bottom end of the drying tank body 1 is provided with a lower hopper 6 for heating and drying the falling raw materials, so that the raw materials fall from the surrounding areas and roll evenly around the inner wall after being sprayed and dried for rolling, heating and drying process.
[0025] An annular spray tube 7 is provided with drying spray tube heads 8 equidistantly arranged around the bottom of the annular spray tube 7 and obliquely penetrated into the inner part of the material blocking tube 4, so that the heated gas can be blown into the inner part of the material blocking tube 4 to blow, heat and dry the raw materials, and the two ends of the upper part of the annular spray tube 7 are connected to a heater 9 arranged at the end of the drying tank body 1 through a connecting air pipe, so that the filtered gas is dried and heated to further increase the gas temperature for high-temperature drying of the raw materials, and the input end of the heater 9 is connected to the output port of the fan 10 arranged at the end of the drying tank body 1 through a pipeline, the feed pipe 2 is fixed through the center position of the upper end of the drying tank body 1, and the spray head 3 is fixed to one end of the feed pipe 2 located inside the drying tank body 1.
[0026] The output end of the fan 10 is connected to a T-shaped air outlet pipe 11, which is beneficial for blowing the gas from the fan 10 in two directions, and both ends of the air outlet pipe 11 are provided with a pre-filter 12 for filtering the gas, so that the gas passes through the pre-filter 12 to filter the existing dust and particulate matter, and the output end of the pre-filter 12 is connected to the heater 9 arranged on both sides of the end of the drying tank body 1 through a pipe. A fixed cross bar 13 is provided laterally at the upper end of the inner part of the material resistance cylinder 4, and the top of the conical material guide diffusion block 5 is fixed to the center position of the bottom end of the fixed cross bar 13 by a connecting rod vertically downward, so that the raw materials diffuse and fall to the surroundings, which is beneficial for the spraying and heating treatment. The conical material guide diffusion block 5 includes three conical cylindrical blocks that increase the guide area from top to bottom. The three conical cylindrical blocks are vertically fixed from small to large by connecting rods to strengthen the firmness of the conical material guide diffusion block 5.
[0027] The inner surface of the lower hopper 6 is evenly embedded with a heating plate 14 for heating and drying the falling rolling raw materials, which can generate high-temperature heat on the inner wall of the lower hopper 6 to evenly heat and dry the rolling and falling raw materials. A discharge pipe 15 is provided at the bottom of the lower hopper 6 to discharge the dried raw materials into the receiving trough 16. The bottom of the lower hopper 6 is provided with a receiving trough 16. A servo motor 17 is provided in the conical block in the middle of the inner side of the receiving trough 16 to drive the unloading spiral blade 18 and the cleaning scraper 19 to rotate. The vertical transmission on the rotating shaft of the servo motor 17 It is connected to a discharge spiral blade 18 extending to the inside of the discharge pipe 15, which is conducive to rapid discharge and reduction of accumulation. The top of the discharge spiral blade 18 is provided with a V-shaped structure for scraping and cleaning the inner wall of the discharge hopper 6, which can scrape and clean the residual raw materials on the inner wall of the discharge hopper 6. A suction and discharge pump 20 is provided on both sides of the outside of the receiving trough 16 and at the bottom end of the drying tank body 1, and the discharge pipe connected to the output end of the suction and discharge pump 20 extends through both sides of the outside of the drying tank body 1, so that the raw materials can be quickly discharged from both sides of the outside.
[0028] Specifically, when in use, first connect the feed pipe 2 with the external feed pump, and input the raw materials to be dried into the spray head 3, so that the raw materials are evenly sprayed into the material blocking tube 4 in a fan shape using the spray head 3. At this time, the fan 10 works to transport the external air to the pre-filter 12 to filter the dust and particulate matter in the gas to avoid contamination of the dry raw materials and quality degradation. The filtered gas enters the heater 9 for heating, and the moisture in the gas is removed by high-temperature heating, so that the gas is kept in a high-temperature dry state and transported to the annular spray pipe 7. The high-temperature gas in the annular spray pipe 7 is sprayed from the connected drying spray pipe head 8, and the sprayed high-temperature gas is evenly sprayed from all sides of the inside of the material blocking tube 4 to blow and dry the evenly diffused and falling raw materials, thereby achieving the effect of evenly high-temperature drying and spraying the evenly falling raw materials. When the raw materials are dried, they can be blown onto the tapered material guide diffusion block 5 which is arranged roughly vertically and evenly rebound outwards. The raw materials can then be subjected to high-temperature spray drying treatment, so that the raw materials can be effectively spray dried. Subsequently, the spray-dried raw materials fall into the lower hopper 6 and roll evenly toward the discharge pipe 15. At this time, the raw materials roll on the heating plate 14 and utilize the high-temperature heat generated thereby to perform rolling drying on the rolling raw materials. Then, the servo motor 17 rotates to drive the discharge spiral blade 18 to rotate in the discharge pipe 15 to accelerate the speed of the raw materials, thereby avoiding the phenomenon of raw materials blocking the discharge pipe 15. At the same time, the cleaning scraper 19 rotates to scrape and clean the residual raw materials on the inner wall of the lower hopper 6, thereby avoiding unnecessary waste of residual raw materials. After that, the dried raw materials fall into the receiving trough 16 and flow toward the surrounding guides. Finally, the suction and discharge pump 20 is used to adsorb and discharge the dried raw materials.
[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. An energy-saving ultra-high temperature spray dryer, characterized in that: include: A drying tank body (1) is provided with a spray head (3) for spraying raw materials in all directions at the top end of the drying tank body (1) through a feed pipe (2); a material blocking cylinder (4) is provided inside the drying tank body (1) for blocking the raw materials sprayed by the spray head (3); a conical material guide and diffusion block (5) is vertically provided inside the material blocking cylinder (4) for guiding and dispersing the sprayed and falling raw materials; and a lower hopper (6) is provided at the inner bottom end of the drying tank body (1) for heating and drying the falling raw materials; An annular spray pipe (7) is provided with drying spray pipe heads (8) equidistantly arranged around the bottom of the annular spray pipe (7) and obliquely extending through the interior of the material blocking cylinder (4). Both ends of the upper portion of the annular spray pipe (7) are connected to a heater (9) provided at the end of the drying tank body (1) through a communicating air pipe, and the input end of the heater (9) is connected to the output port of a fan (10) provided at the end of the drying tank body (1) through a pipeline.
2. The energy-saving ultra-high temperature spray dryer according to claim 1, characterized in that: The feed pipe (2) is fixed through the center of the upper end of the drying tank (1), and the spray head (3) is fixed to one end of the feed pipe (2) located inside the drying tank (1).
3. The energy-saving ultra-high temperature spray dryer according to claim 1, characterized in that: The output end of the fan (10) is connected to a T-shaped air outlet pipe (11), and both ends of the air outlet pipe (11) are provided with a pre-filter (12) for filtering gas, and the output end of the pre-filter (12) is connected to heaters (9) provided on both sides of the end of the drying tank (1) through a pipeline.
4. The energy-saving ultra-high temperature spray dryer according to claim 1, characterized in that: A fixed cross bar (13) is laterally provided at the upper end of the inner portion of the material blocking cylinder (4), and the top end of the conical material guiding and diffusion block (5) is fixed vertically downward at the center position of the bottom end of the fixed cross bar (13) through a connecting rod.
5. The energy-saving ultra-high temperature spray dryer according to claim 1, characterized in that: The conical material guiding and diffusion block (5) comprises three conical cylindrical blocks whose guiding areas increase in sequence from top to bottom, and the three conical cylindrical blocks are vertically fixed from small to large by connecting rods.
6. The energy-saving ultra-high temperature spray dryer according to claim 1, characterized in that: The inner surface of the lower hopper (6) is evenly embedded with heating plates (14) for heating and drying the falling and rolling raw materials, and a discharge pipe (15) is provided at the bottom of the lower hopper (6).
7. The energy-saving ultra-high temperature spray dryer according to claim 6, characterized in that: A receiving trough (16) is provided at the bottom of the material receiving trough (6), and a servo motor (17) is provided in a conical block provided in the middle of the inner side of the material receiving trough (16). A material discharging spiral blade (18) extending to the inside of the material discharging pipe (15) is vertically connected on the rotating shaft of the servo motor (17), and a cleaning scraper (19) with a V-shaped structure is provided at the top of the material discharging spiral blade (18) for scraping and cleaning the inner wall of the material discharging hopper (6).
8. The energy-saving ultra-high temperature spray dryer according to claim 7, characterized in that: A material suction and discharge pump (20) is provided on both sides of the outside of the material receiving trough (16) and at the bottom end inside the drying tank (1), and a discharge pipe connected to the output end of the material suction and discharge pump (20) extends through and extends to both sides of the outside of the drying tank (1).