CN-122015430-A - Energy-saving continuous dryer for chemical powder

CN122015430ACN 122015430 ACN122015430 ACN 122015430ACN-122015430-A

Abstract

The energy-saving continuous chemical powder dryer integrates a feeding pretreatment unit, a multistage grading drying unit, a cooling shaping unit, a waste heat recovery unit and a discharging conveying unit, a powder agglomeration structure is broken through a stirring turning plate, negative pressure closed conveying is carried out, dust raising loss is reduced, a material gathering heating roller is matched with a multilayer turning guide frame to realize powder grading drying, the problems of over drying and under drying of traditional equipment are solved, a rotating airflow field is cooled to avoid powder secondary agglomeration, waste heat recovery of a shell-and-tube heat exchanger is carried out, energy consumption is reduced, and a visual observation window monitors the running state in real time. The equipment realizes continuous and intelligent drying of chemical powder, improves drying efficiency and product quality, reduces energy consumption and maintenance cost, and is suitable for large-scale production of various chemical powder.

Inventors

GAO ZHIMING
YAN JUNWEI
HE TONGHAO
ZHOU JIJUN
ZHAO ZHIBIN
QIU LIANGPING

Assignees

山东东临新材料股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260413

Claims (10)

1. The energy-saving continuous chemical powder dryer is characterized by comprising a central square frame, wherein a transfer supporting seat is fixed above the central square frame, an installation limiting plate is fixed on the upper surface of the transfer supporting seat, and a first supporting frame and a second supporting frame are respectively fixed on the transverse end surfaces of the two sides of the transfer supporting seat; The first support frame is provided with a feeding treatment unit, the second support frame is provided with a waste heat recovery unit, a multistage continuous drying unit is arranged in the installation limiting plate, and a discharging conveying unit is arranged in the transfer support seat; the multistage continuous drying unit comprises two transversely symmetrical longitudinally extending material-gathering heating rollers, and two ends of each material-gathering heating roller are rotatably arranged on the longitudinal inner wall of the corresponding mounting limiting plate; The multistage continuous drying unit further comprises four turnover guide frames which are alternately arranged from top to bottom at equal intervals, the tail ends of the two turnover guide frames which are arranged at intervals are arranged on the longitudinal inner wall of the same side of the installation limiting plate in a swinging mode through a rotating shaft, and the middle of each turnover guide frame is respectively fixed with a diversion screen plate; An air flow guide frame is arranged on one longitudinal side of each overturning guide frame respectively, the air flow guide frames are fixed on the longitudinal inner wall of the installation limiting plate, an air inlet split box is fixed on the longitudinal outer wall of the installation limiting plate, an air inlet is arranged between the air flow guide frames and the air inlet split box, and an electric heating plate is fixed in the air inlet split box; Each airflow guide frame is respectively provided with a turnover airflow guide plate in a rotating way; A side air box communicated with the two air inlet split boxes is fixed on the outer end surfaces of the two air inlet split boxes positioned on the same side, and a pulse speed regulation fan is arranged in the side air box; The multistage continuous drying unit further comprises cooling air cylinders, and the cooling air cylinders are rotationally arranged right below the four overturning guide frames.
2. The energy-saving continuous dryer for chemical powder, as set forth in claim 1, characterized in that the central square frame is horizontally grounded, four supporting columns with central symmetry are fixed at four corners of the upper surface of the central square frame, and the upper ends of the four supporting columns are fixed to the lower surface of the transit supporting seat; The transfer supporting seat is a square frame seat with a longitudinal opening, the installation limiting plate is a U-shaped frame plate with a downward opening, and the two lateral sides of the installation limiting plate are provided with openings; The first support frame and the second support frame are both inverted L-shaped frames, and the lower ends of the first support frame and the second support frame are grounded.
3. The energy-saving continuous chemical powder dryer as set forth in claim 2, wherein the discharging and conveying unit comprises two extending flat plates which are longitudinally symmetrical, wherein the extending flat plates are fixed on the longitudinal side end faces of the central square frame, lifting telescopic cylinders are respectively fixed on one side of the upper surface of each extending flat plate, lifting support frames are fixed at the upper telescopic ends of the lifting telescopic cylinders, and the lifting support frames are U-shaped frames with upward openings; The two lifting support frames are positioned on the transverse side end surfaces of the same side, the middle section of each conveying side plate passes through the corresponding transfer support seat and extends to the two sides of the corresponding transfer support seat, two conveying rotating rollers which are longitudinally symmetrical are rotatably arranged between the two conveying side plates, a discharging conveying belt is sleeved between the two conveying rotating rollers, a conveying driving motor is fixed on the transverse outer wall of one conveying side plate, and an output shaft of the conveying driving motor passes through the conveying side plate and is fixed to the side end surface of one conveying rotating roller; Two discharging guide seats are respectively arranged below two ends of the discharging conveyor belt, and are respectively fixed on the two lifting support frames; Square blanking mouth has been seted up at the upper surface middle part of transfer supporting seat.
4. The energy-saving continuous chemical powder dryer as set forth in claim 1, wherein the feeding processing unit comprises a stirring processing box, the stirring processing box is fixed on the upper surface of the first support frame, the stirring processing box is a cylinder box which is transversely arranged and is provided with two open ends, and two open ends of the stirring processing box are respectively fixed with a circular cover plate; One side of the upper end of the stirring treatment box is fixedly connected with a feeding square-mouth pipe; A guide cone seat is fixed on the outer side wall of the round end cover close to one side of the installation limiting plate, and a feeding bent pipe is fixedly connected to the guide cone seat; The stirring driving motor is fixed on the outer side wall of the circular end cover far away from one side of the installation limiting plate, the tail end of an output shaft of the stirring driving motor penetrates through the circular end cover and is fixed with a stirring rotating shaft, and a plurality of stirring turning plates are fixed on the stirring rotating shaft.
5. The energy-saving continuous chemical powder dryer of claim 4, wherein the feeding processing unit further comprises a feeding transfer box, the feeding transfer box is a square box with a tapered lower part, the feeding transfer box is fixed on the upper surface of the installation limiting plate, a feeding hole communicated with the feeding transfer box is formed in the middle of the upper surface of the installation limiting plate, and two material collecting heating rollers are arranged right below the feeding hole; The upper end of the feeding bent pipe is fixedly connected to the feeding transfer box, a negative pressure conveying pump communicated with the feeding transfer box is fixed on the lateral outer wall of one side of the feeding transfer box, and the negative pressure conveying pump is arranged on the opposite side of the feeding bent pipe; And a top fan is fixed in the middle of the upper surface of the feeding transfer box.
6. The energy-saving continuous dryer for chemical powder, as set forth in claim 1, characterized in that two symmetrical rotary driving motors are fixed on the longitudinal outer wall of one side of the installation limiting plate, and the tail ends of the output shafts of the rotary driving motors penetrate through the side wall of the installation limiting plate and are fixed to the side end surfaces of the corresponding material collecting heating rollers; The inside of the material-gathering heating roller is hollow; An electric heating box is fixed on the longitudinal outer wall of the other side of the installation limiting plate, two metal hot rods are externally connected with the electric heating box, and the tail ends of the two metal hot rods respectively penetrate through the installation limiting plate and extend into the cavities of the two material-gathering heating rollers.
7. The energy-saving continuous chemical powder dryer is characterized in that four transmission boxes are respectively fixed on the longitudinal outer wall of the installation limiting plate, corresponding to the four overturning guide frames, each transmission box is respectively provided with a transmission mechanism for driving the overturning guide frames to overturn around a shaft, and each transmission mechanism comprises a transmission motor, a transmission wheel and a transmission chain; an air inlet grille is fixed in the air inlet, a power supply module electrically connected with the electric heating plate is fixed on the outer side wall of the air inlet split flow box, and a rotation driving module connected with the turnover airflow guide plate is fixed on the transverse outer wall of the airflow guide frame.
8. The energy-saving continuous dryer for chemical powder, as set forth in claim 7, characterized in that the cooling air duct is a cylinder which extends longitudinally and is arranged in a closed manner, three cooling air openings which are symmetrical in center are arranged on the peripheral wall of the cooling air duct, and an isolation net is respectively fixed in each cooling air opening; A stepping motor is fixed on the longitudinal outer wall of the installation limiting plate and opposite to the cooling air duct, and the tail end of an output shaft of the stepping motor penetrates through the installation limiting plate and is fixed to the closed end face of the cooling air duct; The air conditioner is characterized in that a compression air pump is fixed on the longitudinal outer wall of the other side of the installation limiting plate and opposite to the cooling air cylinder, the compression air pump is externally connected with an air inlet pipe, and the tail end of the air inlet pipe penetrates through the installation limiting plate and extends into the cooling air cylinder.
9. The energy-saving continuous chemical powder dryer as set forth in claim 3, wherein the waste heat recovery unit comprises an aggregate cone hopper, the aggregate cone hopper is arranged right below the cooling air duct, two longitudinal ends of the aggregate cone hopper are respectively fixed on the longitudinal inner wall of the installation limiting plate, and the lower end of the aggregate cone hopper is communicated with the blanking port; A liquid flow passage is formed in the aggregate cone hopper; The upper surface of second support frame is fixed with the waste heat recovery case, the middle part fixed clip of waste heat recovery case is equipped with the shell-and-tube heat exchanger, two external liquid exchange tubes of shell-and-tube heat exchanger, two the end of liquid exchange tube is fixed on the horizontal outer wall of collection cone fill and with the liquid runner intercommunication sets up.
10. The energy-saving continuous dryer for chemical powder, as set forth in claim 9, characterized in that glass observation windows are respectively fixed in the lateral openings on both sides of the installation limiting plate, and the lower ends of the glass observation windows are fixed on the upper end surfaces of the aggregate cone hoppers.

Description

Energy-saving continuous dryer for chemical powder Technical Field The invention relates to the technical field of chemical powder material drying equipment, in particular to an energy-saving continuous chemical powder dryer. Background The chemical powder is used as a basic raw material in the fields of chemical industry, building materials, medicines and the like, and the drying treatment quality directly influences the stability of subsequent processing procedures and the quality of finished products. At present, the conventional box-type drying, air flow drying and other processes are generally adopted in chemical powder drying operation, but a plurality of short plates which are needed to be solved are gradually exposed in the practical application process. In the powder feeding pretreatment stage, because the chemical powder has the characteristics of fine particle size and large specific surface area, agglomeration and agglomeration are easy to form in the storage and transportation processes. The traditional feeding equipment lacks an effective scattering structure, and after caking powder directly enters a drying procedure, internal moisture cannot fully escape due to insufficient heating area, meanwhile, the traditional feeding equipment adopts an open or semi-open conveying mode, powder dust loss is serious, raw materials are wasted, production environment is polluted, and in addition, powder of different batches is easy to remain and mix in a conveying channel, cross contamination is caused, and the workload of equipment cleaning and maintenance is increased. In the core drying process, the traditional equipment adopts a single hot air direct blowing or roller drying mode, and does not carry out grading treatment aiming at the particle size difference of the powder. The powder with small particle size is easy to be carried through a drying area by hot air due to light weight, and has the over-drying phenomenon, so that the activity of the powder is reduced, and the powder with large particle size is difficult to thoroughly evaporate the internal moisture due to insufficient residence time, so that under-dried defective products are formed, and the drying uniformity and the qualification rate are lower. Meanwhile, the hot air direction and the air speed regulation and control means of the traditional equipment are single, the heat exchange efficiency cannot be flexibly adjusted according to the powder characteristics, the energy consumption in the drying process is high, the efficiency is low, and the requirement of large-scale production is difficult to meet. The cooling link of the dried high-temperature powder has technical defects as well. The traditional cooling mode is mostly natural cooling or simple air cooling, the cooling speed is low, the cooling is uneven, the residual heat carried by the powder cannot be rapidly dissipated, secondary agglomeration is extremely easy to occur, the loose structure of the powder is damaged, and even part of the powder can be subjected to change of physicochemical properties such as crystal form transformation, component decomposition and the like due to the residual heat, so that the quality stability of a product is seriously affected. In terms of energy utilization, the waste heat recovery system of the traditional drying equipment is deficient, a large amount of waste heat generated in the drying process is directly discharged along with tail gas, the energy utilization rate is low, the production cost is high, and the energy conservation, environmental protection, cost reduction and efficiency improvement of the current industrial field are contrary to the development trend. In the discharging conveying link, the traditional conveying device is fixed in structure, lacks a linkage control function with a waste heat recovery procedure, is easy to cause outward scattering loss of powder in the waste heat recovery stage, is difficult to realize rapid and smooth conveying after recovery is finished, cannot adapt to the operation rhythm of a continuous production line, and restricts the improvement of the whole production efficiency. In addition, traditional drying equipment is mostly closed structure, does not set up effectual visual monitoring window, and the operating personnel can't observe the flow state and the stoving progress of the inside powder of equipment in real time, is difficult to prejudge in advance and handle powder jam, the inhomogeneous trouble of stoving, leads to the production accident rate to be higher, and equipment operation maintenance cost increases. In summary, research and development of chemical powder drying equipment integrating powder scattering pretreatment, grading accurate drying, rapid cooling shaping, waste heat recycling, intelligent discharging conveying and running state visualization has become an urgent need for solving the pain point of the current industry and promoting the upgrading of the chemical powder dryi