Residual heat recovery device of centrifugal spray dryer
By designing a centrifugal spray dryer residual temperature recovery device, using induced draft fans, filter components, cyclone separators and other components, the problem of solid impurities clogging the filter plate during the residual temperature recovery process in the existing technology is solved, and the residual temperature is achieved. Efficient recycling and utilization avoids energy waste.
Patent Information
- Application Number
- CN202421039630.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-14
AI Technical Summary
During the residual temperature recovery process of existing centrifugal spray dryers, the filter plate of the air filter accumulates and blocks due to the presence of solid impurities, resulting in poor air circulation, resulting in large-scale loss of residual temperature and waste of energy.
A centrifugal spray dryer residual temperature recovery device is designed. The residual temperature gas is attracted into the filter assembly through an induced draft fan. The filtering and cleaning mechanism of the combination of fan blades and cleaning brushes is used to prevent solid objects from clogging the filter holes and speed up the circulation of the residual temperature gas. ;At the same time, through the combination of cyclone separator and threaded pipe, the gas circulation time is increased, and the water tank is used to recycle the residual temperature.
It effectively prevents solid objects from clogging the filter holes, increases the circulation speed of the residual temperature gas, reduces the loss of residual temperature, avoids waste of energy, and realizes the recycling of residual temperature.
Smart Images
Figure CN222368362U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of residual heat recovery equipment, in particular to a residual heat recovery device for a centrifugal spray dryer. Background Art
[0002] Centrifugal spray dryer is a drying equipment used to convert liquid materials into powder by spraying. It is mainly composed of spray drying chamber, centrifugal sprayer, air heating system, air filter, cyclone separator, exhaust fan, etc. The liquid material is atomized into fine droplets by centrifugal sprayer, and then contacted with hot air to quickly evaporate water in a short time to form dry powder. The dried powder is discharged from the drying chamber through the cyclone separator and exhaust fan, and the exhaust gas is discharged through the air filter. In the process of residual heat recovery of the existing centrifugal spray dryer, after the gas and solid materials are separated by the cyclone separator, a small amount of solid impurities will be contained in the gas. After filtering through the air filter, a large amount of solid paper will accumulate on the filter plate for a long time, blocking the filter holes, resulting in poor air circulation, a large amount of air residual heat loss, and energy waste.
[0003] To this end, the utility model provides a centrifugal spray dryer residual heat recovery device. Utility Model Content
[0004] The utility model aims to solve the problems existing in the background technology and proposes a residual heat recovery device for a centrifugal spray dryer.
[0005] The technical solution of the utility model is as follows: a residual heat recovery device for a centrifugal spray dryer, comprising a support frame, and a drying dish fixedly sleeved and arranged inside the support frame, and also comprising: a material hopper arranged at a feed port of the drying dish, the lower end of the material hopper being provided with an atomizing nozzle for converting liquid material into mist; and an air heater fixedly installed on an outer wall of the support frame for drying, the output end of the air heater being fixedly connected with a first connecting pipe, the first connecting pipe passing through the support frame and the drying dish and extending to the interior of the atomizing nozzle; and a second connecting pipe connected to an outlet end of the support frame, one end of the second connecting pipe being connected with a residual heat collection component for recycling residual heat.
[0006] Optionally, the residual heat collection component includes an induced draft fan fixedly arranged on the upper surface of the drying dish, the output end of the induced draft fan is connected to a third connecting pipe, the third connecting pipe passes through the interior of the drying dish and is connected to an annular pipe, the output end of the induced draft fan is connected to a filter component for filtering gas, the lower end of the filter component is connected to a threaded pipe, the outer wall of the threaded pipe is sleeved with a water tank, and the water tank is fixedly connected to a support frame, the water tank is provided with a water inlet pipe and a water outlet pipe, and the lower end of the threaded pipe is connected to a cyclone separator for separating gas and solid particles.
[0007] Optionally, the filter assembly includes a filter tube, a cover plate is clamped on the filter tube, the side wall of the cover plate is fixedly connected with a first filter plate and a second filter plate, an axle rod movably passes through the first filter plate and the second filter plate, a fan blade is fixedly sleeved on the outer wall of one end of the axle rod, a sleeve frame is fixedly sleeved on the outer wall of the axle rod, cleaning brushes are fixedly provided on both sides of the sleeve frame, and the cleaning brushes are fitted with the first filter plate and the second filter plate.
[0008] Optionally, a plurality of groups of stoppers are fixedly disposed inside the threaded tube.
[0009] Optionally, a manual valve is provided at the discharge port of the cyclone separator.
[0010] Optionally, a control panel is provided on the outer wall of the air heater.
[0011] Optionally, the annular tube is arranged in an annular structure.
[0012] Compared with the prior art, the utility model has the following beneficial technical effects:
[0013] The utility model attracts the residual heat in the drying dish to the inside of the filter pipe by the suction of the induced draft fan. The residual heat gas pushes the fan blades to rotate during the rapid flow process. The fan blades drive the sleeve frame to rotate through the shaft rod. The sleeve frame drives the cleaning brushes on both sides to rotate at the same time, so that the cleaning brushes sweep the first filter plate and the second filter plate at the same time, thereby preventing the filtered solid objects from clogging the filter holes, accelerating the circulation of the residual heat gas, reducing the loss of residual heat, and avoiding energy waste.
[0014] Furthermore, the utility model transmits the residual heat to the cyclone separator through the second connecting pipe, and the gas and solid materials are separated by the cyclone separator. The residual heat enters the interior of the threaded pipe through the suction of the induced draft fan, and is blocked by the block on the inner wall of the threaded pipe, thereby increasing the circulation time in the threaded pipe, thereby heating the water inside the water tank, recycling the residual heat and avoiding energy waste. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 A schematic structural diagram of a residual heat recovery device for a centrifugal spray dryer is provided in the utility model;
[0016] Figure 2 Provide the utility model Figure 1 A schematic cross-sectional structure diagram of ;
[0017] Figure 3 Provide the utility model Figure 1 A schematic diagram of the internal cross-sectional structure of the filter assembly;
[0018] Figure 4Provide the utility model Figure 1 Schematic diagram of the internal cross-sectional structure of a medium threaded pipe.
[0019] Reference numerals:
[0020] 1. Support frame; 2. Drying dish; 3. Material hopper; 4. Atomizing nozzle; 5. Air heater; 6. First connecting pipe; 7. Second connecting pipe;
[0021] 8. Residual heat collection assembly; 81. Induced draft fan; 82. Third connecting pipe; 83. Ring pipe; 84. Filter assembly; 841. Filter through pipe; 842. Cover plate; 843. First filter plate; 844. Second filter plate; 845. Shaft; 846. Fan blade; 847. Socket frame; 848. Cleaning brush; 85. Threaded pipe; 86. Water tank; 87. Water inlet pipe; 88. Water outlet pipe; 89. Cyclone separator;
[0022] 9. Stopper; 10. Manual valve; 11. Control panel. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0024] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.
[0025] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.
[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0027] Example
[0028] like Figure 1 to Figure 2 As shown, the utility model proposes a centrifugal spray dryer residual heat recovery device, including a support frame 1, and the outer wall of the support frame 1 is hingedly provided with a transparent window for observing the interior of the drying chamber, and a drying dish 2 fixedly sleeved and arranged inside the support frame 1, and also includes: a material hopper 3 arranged at the feed port of the drying dish 2, and the lower end of the material hopper 3 is provided with an atomizing nozzle 4 for converting liquid materials into mist, so as to improve the drying efficiency; and an air heater 5 fixedly installed on the outer wall of the support frame 1 for drying, and the output end of the air heater 5 is fixedly connected with a first connecting pipe 6, and the first connecting pipe 6 passes through the support frame 1 and the drying dish 2 and extends to the interior of the atomizing nozzle 4, so as to facilitate the transmission of heated air to the interior of the drying dish 2; a second connecting pipe 7 is connected to the outlet end of the support frame 1, and one end of the second connecting pipe 7 is connected with a residual heat collection component 8 for recycling residual heat, so as to facilitate the transmission of residual heat gas and solid materials after drying.
[0029] like Figure 2 As shown, the residual heat collection component 8 includes an induced draft fan 81 fixedly arranged on the upper surface of the drying dish 2, the output end of the induced draft fan 81 is connected to a third connecting pipe 82, the third connecting pipe 82 runs through the interior of the drying dish 2 and is connected to an annular pipe 83, and the bottom of the annular pipe 83 is provided with a plurality of air outlets, the output end of the induced draft fan 81 is connected to a filter component 84 for filtering gas, so as to filter solid particles in the residual heat gas and avoid circulation into the drying chamber, thereby improving the drying efficiency, the lower end of the filter component 84 is connected to a threaded pipe 85, the threaded pipe 85 The outer wall of the support frame 1 is sleeved with a water tank 86, and the water tank 86 is fixedly connected to the support frame 1. A water inlet pipe 87 and a water outlet pipe 88 are provided on the water tank 86, and valves are provided on the water inlet pipe 87 and the water outlet pipe 88, which are convenient for filling and draining water into the water tank 86. The lower end of the threaded tube 85 is connected to a cyclone separator 89 for separating gas and solid particles, which is convenient for capturing material particles in the residual temperature gas by the separator, and the residual temperature gas will be discharged through the separator, ensuring that the dried material particles will not be carried away by the residual temperature gas, thereby improving the drying efficiency and product quality.
[0030] like Figure 2 and Figure 3As shown, the filter assembly 84 includes a filter tube 841, a cover plate 842 is clamped on the filter tube 841, and a sealing gasket is provided at the clamping position of the filter tube 841 and the cover plate 842 to increase its sealing performance. The side wall of the cover plate 842 is fixedly connected with a first filter plate 843 and a second filter plate 844, which can filter solid particles in the residual temperature gas. The first filter plate 843 and the second filter plate 844 are movably penetrated by a shaft rod 845, and a fan blade 845 is fixedly sleeved on the outer wall of one end of the shaft rod 845. 46, and the blades of the fan blades 846 are inclined to facilitate the pushing of the gas, the outer wall of the shaft 845 is fixedly sleeved with a sleeve frame 847, and cleaning brushes 848 are fixedly set on both sides of the sleeve frame 847, and the cleaning brushes 848 are fitted with the first filter plate 843 and the second filter plate 844, and the cleaning brushes 848 can be pushed by the residual temperature gas to automatically rotate and clean the first filter plate 843 and the second filter plate 844, so as to avoid clogging the filter holes, increase the circulation speed of the residual temperature gas, and reduce the loss of residual temperature.
[0031] Furthermore, a plurality of groups of stoppers 9 are fixedly disposed inside the threaded tube 85, and each group of stoppers 9 is arranged in an "eight"-shaped structure.
[0032] Secondly, a manual valve 10 is provided at the discharge port of the cyclone separator 89, so that the dried solid material can be discharged manually.
[0033] Furthermore, a control panel 11 is provided on the outer wall of the air heater 5 , and the control panel 11 is connected to the air heater 5 via a cable, so as to control the temperature of the air heated by the air heater 5 .
[0034] Finally, the annular tube 83 is arranged in an annular structure, which is convenient for blowing out the annular residual temperature gas and improving the drying efficiency.
[0035] The working principle of this embodiment is as follows: first, a proper amount of water is injected into the water tank 86 through the water outlet pipe 88, and then the delivery pipe of the liquid to be dried is connected to the input end of the atomizing nozzle 4, and then the air heater 5 is started and adjusted to a suitable temperature through the control panel 11, so that the air heater 5 transmits heated air into the drying dish 2 through the first connecting pipe 6, and at the same time, the mist material is dispersed into smaller droplets through the atomizing nozzle 4, and dried by the heated air.
[0036] Further Figure 4Then, the induced draft fan 81 is started, and the dried solid material and the residual heat gas enter the cyclone separator 89 through the second connecting pipe 7 through the suction of the induced draft fan 81, and then the solid material and the residual heat gas are separated by the cyclone separator 89. The separated solid material is discharged by manually opening the manual valve 10, and the residual heat gas enters the threaded pipe 85 through the suction of the induced draft fan 81, and is blocked by multiple groups of blocks 9 inside the threaded pipe 85, so that the residual heat gas increases the circulation time, thereby heating the water inside the water tank 86.
[0037] Furthermore, the residual heat gas enters the interior of the filter assembly 84 from the threaded tube 85, and is filtered through the first filter plate 843 and the second filter plate 844 in the filter tube 841, so that the solid materials in the residual heat gas are filtered. At the same time, the residual heat gas drives the fan blade 846 to rotate during the circulation process, and the fan blade 846 drives the shaft 845 to rotate between the first filter plate 843 and the second filter plate 844. The shaft 845 drives the sleeve frame 847 to rotate, and the sleeve frame 847 drives the cleaning brushes 848 on both sides to rotate at the same time to clean the first filter plate 843 and the second filter plate 844 to avoid clogging the filter holes. The residual heat gas enters the interior of the annular tube 83 through the third connecting tube 82, and then passes through the multiple air outlets at the bottom of the annular tube 83, thereby cyclically heating the interior of the drying dish 2, improving the drying efficiency, avoiding the clogging of the filter holes by the filtered solid objects, accelerating the circulation of the residual heat gas, reducing the loss of residual temperature, and avoiding energy waste.
[0038] The above-mentioned specific embodiments are only several optional embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.
Claims
1. A centrifugal spray dryer residual heat recovery device, comprising a support frame (1), and a drying dish (2) fixedly sleeved and arranged inside the support frame (1), characterized in that: Also includes: A material hopper (3) is arranged at the feed inlet of the drying dish (2), wherein the lower end of the material hopper (3) is provided with an atomizing nozzle (4) for converting liquid material into mist; and an air heater (5) fixedly mounted on the outer wall of the support frame (1) for drying, wherein the output end of the air heater (5) is fixedly connected to a first connecting pipe (6), the first connecting pipe (6) passing through the support frame (1) and the drying dish (2) and extending to the interior of the atomizing nozzle (4); A second connecting pipe (7) is connected to the outlet end of the support frame (1), and one end of the second connecting pipe (7) is connected to a residual heat collection component (8) for recycling residual heat.
2. A centrifugal spray dryer residual heat recovery device according to claim 1, characterized in that: The residual heat collection component (8) comprises an induced draft fan (81) fixedly arranged on the upper surface of the drying dish (2); the output end of the induced draft fan (81) is connected to a third connecting pipe (82); the third connecting pipe (82) penetrates the interior of the drying dish (2) and is connected to an annular pipe (83); the output end of the induced draft fan (81) is connected to a filter component (84) for filtering gas; the lower end of the filter component (84) is connected to a threaded pipe (85); the outer wall of the threaded pipe (85) is sleeved with a water tank (86); the water tank (86) is fixedly connected to the support frame (1); a water inlet pipe (87) and a water outlet pipe (88) are arranged on the water tank (86); the lower end of the threaded pipe (85) is connected to a cyclone separator (89) for separating gas and solid particles.
3. A centrifugal spray dryer residual heat recovery device according to claim 2, characterized in that: The filter assembly (84) comprises a filter tube (841), a cover plate (842) is clamped on the filter tube (841), a first filter plate (843) and a second filter plate (844) are fixedly connected to the side wall of the cover plate (842), a shaft rod (845) movably passes through the first filter plate (843) and the second filter plate (844), a fan blade (846) is fixedly sleeved on the outer wall of one end of the shaft rod (845), a sleeve frame (847) is fixedly sleeved on the outer wall of the shaft rod (845), a cleaning brush (848) is fixedly arranged on both sides of the sleeve frame (847), and the cleaning brush (848) is fitted with the first filter plate (843) and the second filter plate (844).
4. A centrifugal spray dryer residual heat recovery device according to claim 2, characterized in that: A plurality of groups of stoppers (9) are fixedly arranged inside the threaded tube (85).
5. The centrifugal spray dryer residual heat recovery device according to claim 2, characterized in that: A manual valve (10) is provided at the discharge port of the cyclone separator (89).
6. A centrifugal spray dryer residual heat recovery device according to claim 1, characterized in that: The outer wall of the air heater (5) is provided with a control panel (11).
7. A centrifugal spray dryer residual heat recovery device according to claim 2, characterized in that: The annular tube (83) is arranged in an annular structure.