阅读说明：本技术 一种带有旋风除尘器的磷石膏煅烧炉 (Phosphogypsum calcining furnace with cyclone dust collector ) 是由 赵嘉珩 赵建纲 于 2020-05-18 设计创作，主要内容包括：一种带有旋风除尘器的磷石膏煅烧炉,属于磷石膏煅烧领域,所述的旋风除尘器安装在磷石膏双筒煅烧炉的前端,包括煅烧炉外筒,进料包头,煅烧炉出料口,煅烧炉内筒出料口,煅烧炉内筒,出料包头,除尘器沉降输送管,除尘器沉降出口,煅烧系统抽风管,旋风除尘器,除尘器进风连接管,磷石膏进料口,沉降壁实时清理装置；具有能够实现磷石膏的高温煅烧,及时回收风吹走的磷石膏粉,防止旋风除尘器堵塞,减少了检修和维护次数,降低了运行成本,提高了生产效率的特点。(The utility model provides a ardealite calcining furnace with cyclone dust remover, belongs to the ardealite calcining field, and the cyclone dust remover is installed at the front end of the ardealite twin-drum calcining furnace, and includes the calcining furnace urceolus, the feeding baotou, the calcining furnace discharge gate, the calcining furnace inner tube, the discharge baotou, the dust remover subsides the conveyer pipe, the dust remover subsides the export, the calcining system exhaust column, the cyclone dust remover, the dust remover air inlet connecting pipe, the ardealite feed inlet, subside wall real-; the method has the characteristics of realizing high-temperature calcination of the phosphogypsum, timely recovering the phosphogypsum powder blown away by wind, preventing a cyclone dust collector from being blocked, reducing the times of maintenance and overhaul, reducing the operation cost and improving the production efficiency.)

1. The phosphogypsum calcining furnace with the cyclone dust collector is characterized in that: the cyclone dust collector is arranged at the front end of the phosphogypsum double-barrel calcining furnace and comprises an outer barrel of the calcining furnace, a feeding cap, a discharging port of the calcining furnace, a discharging port of an inner barrel of the calcining furnace, a discharging cap, a settling conveying pipe of the dust collector, a settling outlet of the dust collector, an exhaust pipe of a calcining system, the cyclone dust collector, an air inlet connecting pipe of the dust collector, a phosphogypsum feeding port and a real-time cleaning device; the outer cylinder of the calcining furnace is arranged on the periphery of the inner cylinder of the calcining furnace, and the end part of the outer cylinder of the calcining furnace is provided with a feeding covering head which is hermetically and relatively rotatably connected with the feeding covering head; an outer barrel feeding port is formed in the outer barrel wall of the outer barrel of the calcining furnace, which is overlapped with the feeding head; the feeding ferrule is arranged at one end of the opening of the outer cylinder, one side of the feeding ferrule is hermetically and slidably connected with the outer cylinder, and the other side of the feeding ferrule is connected with the discharging ferrule; the feeding bag head is a cavity body and is fixedly connected with the calcining furnace mounting base through a mounting bracket; the discharging port of the calcining furnace is arranged at the lower part of the discharging covering head and is communicated with the inner cavity of the discharging covering head of the calcining furnace; a plurality of discharging ports of the inner cylinder of the calcining furnace are arranged on the wall of one end of the opening of the inner cylinder of the calcining furnace and are positioned in the range of the inner cavity of the discharging covering head; the inner cylinder of the calcining furnace is arranged in the outer cylinder of the calcining furnace and is coaxial with the outer cylinder of the calcining furnace, and the outer wall of the inner cylinder of the calcining furnace is fixedly connected with the inner wall of the outer cylinder of the calcining furnace through a connecting device and can synchronously rotate with the outer cylinder of the calcining furnace; the discharging covering head is arranged at one end of the opening of the inner cylinder of the calcining furnace, wraps the periphery of the inner cylinder of the calcining furnace and is fixedly arranged on the mounting base of the calcining furnace through the mounting bracket; the dust remover sedimentation conveying pipe is arranged between the dust remover sedimentation outlet and the feeding head, and two ends of the dust remover sedimentation conveying pipe are respectively communicated with the dust remover sedimentation outlet and the inner cavity of the feeding head; the position of the dust remover sedimentation conveying pipe at one end of the dust remover is higher than that of the dust remover sedimentation conveying pipe at one end of the feeding head; the sedimentation outlet of the dust remover is arranged at the lower end of the cyclone dust remover and is connected with the lower opening of the conical inner cavity at the lower part of the cyclone dust remover; the calcining system exhaust pipe is arranged at the air outlet of the cyclone dust collector and is connected with the air outlet of the cyclone dust collector, and the other end of the calcining system exhaust pipe is connected with the exhaust fan; the cyclone dust collector is arranged near a feeding wrapping head and a discharging wrapping head of the calcining furnace and is fixedly connected with an installation base of the calcining furnace through a bracket; the dust collector air inlet connecting pipe is arranged between an air inlet and a feeding head of the cyclone dust collector, and two ends of the dust collector air inlet connecting pipe are respectively connected with the air inlet of the cyclone dust collector and an inner cavity of the feeding head in a sealing way; the phosphogypsum feeding hole is arranged on the feeding wrapping head, is communicated with the inner cavity of the feeding wrapping head and is connected with the discharging end of the phosphogypsum conveying device; the real-time settling wall cleaning device is arranged on the cyclone dust collector and is fixedly connected with the cyclone dust collector.

2. The phosphogypsum calcining furnace with cyclone dust collector as claimed in claim 1, characterized in that: the cyclone dust collector comprises a shell, an air inlet, an air outlet pipe, a cone, a sedimentation outlet and an air outlet; the shell is arranged at the periphery of the cyclone dust collector and is a spiral cavity body; the air inlet is arranged on the side edge of the upper part of the shell, and the air inlet direction of the air inlet is consistent with the spiral direction of the shell; the air outlet pipe is arranged at the upper part of the shell, is positioned on the central line of the shell, penetrates through the top of the shell and extends out of the top of the shell, and the outer wall of the air outlet pipe is fixedly connected with the top of the shell; the cone is arranged at the lower part of the shell, the large end of the cone is hermetically connected with the lower end of the shell, and the small end of the cone is connected with the sedimentation outlet; the sedimentation outlet is arranged at the lower end of the cone and is communicated with the inner cavity of the cone; the air outlet is arranged at the upper end of the air outlet pipe, is positioned on the side wall of the air outlet pipe extending out of the shell part and is communicated with the inner cavity of the air outlet pipe.

3. The phosphogypsum calcining furnace with cyclone dust collector as claimed in claim 1, characterized in that: the real-time cleaning device for the sedimentation wall is arranged on the cyclone dust collector and comprises a driving motor, a speed reducer, a transmission shaft and a cleaner; the driving motor is arranged on the speed reducer and is fixedly connected with the speed reducer, and a power output shaft of the driving motor is butted with a power input shaft of the speed reducer and can transmit the power of the driving motor to the speed reducer; the speed reducer is arranged at the top of the air outlet pipe of the cyclone dust collector and is fixedly connected with the top of the air outlet pipe, and a power output shaft of the speed reducer is fixedly connected with the transmission shaft and can drive the transmission shaft to rotate; the cleaner is arranged on the transmission shaft, is fixedly connected with the transmission shaft and is positioned in the inner cavity of the cone; the cleaner has more than one, and the outer end of cleaner has the inclined plane, and the inclination of inclined plane matches with the inclination of cone inner wall.

4. The phosphogypsum calcining furnace with cyclone dust collector as claimed in claim 3, characterized in that: the cleaner is made of elastic materials, and is a steel plate, a plastic plate, a rubber plate or a metal wire brush.

Technical Field

The invention belongs to the field of phosphogypsum calcination, and particularly relates to a cyclone dust collector matched with a double-drum rotary phosphogypsum calciner.

Background

Phosphogypsum is a byproduct generated by a phosphorus chemical enterprise, and can not be directly applied, so that a large amount of phosphogypsum is accumulated, and environmental pollution is caused; therefore, the applicant applies for a phosphogypsum high-temperature calcining system on line, and converts the phosphogypsum into building gypsum which can be directly used for building construction through the working procedures of pretreatment, calcination, aging and the like; in practical application, the phosphogypsum double-drum calcining furnace matched cyclone dust collector is found to be frequently blocked in work; through observation and analysis research, it is found that high-humidity phosphogypsum dust is settled after entering the cyclone dust collector because the air inlet of the cyclone dust collector and the feed inlet of the double-barrel calcining furnace are located at the same position, and the settled phosphogypsum is easily bonded with other substances when the settled phosphogypsum enters the calcining furnace from the settlement outlet of the cyclone dust collector, so that the outlet of the cyclone dust collector is blocked, the shutdown times are increased, and the maintenance cost is increased.

Disclosure of Invention

Aiming at the problem that a cyclone dust collector of the existing phosphogypsum calcining furnace is easy to block, the invention provides a phosphogypsum calcining furnace with a cyclone dust collector, which is characterized in that: the cyclone dust collector is arranged at the front end of the phosphogypsum double-barrel calcining furnace and comprises an outer barrel of the calcining furnace, a feeding cap, a discharging port of the calcining furnace, a discharging port of an inner barrel of the calcining furnace, a discharging cap, a settling conveying pipe of the dust collector, a settling outlet of the dust collector, an exhaust pipe of a calcining system, the cyclone dust collector, an air inlet connecting pipe of the dust collector, a phosphogypsum feeding port and a real-time cleaning device; the outer cylinder of the calcining furnace is arranged on the periphery of the inner cylinder of the calcining furnace, and the end part of the outer cylinder of the calcining furnace is provided with a feeding covering head which is hermetically and relatively rotatably connected with the feeding covering head; an outer barrel feeding port is formed in the outer barrel wall of the outer barrel of the calcining furnace, which is overlapped with the feeding head; the feeding ferrule is arranged at one end of the opening of the outer cylinder, one side of the feeding ferrule is hermetically and slidably connected with the outer cylinder, and the other side of the feeding ferrule is connected with the discharging ferrule; the feeding bag head is a cavity body and is fixedly connected with the calcining furnace mounting base through a mounting bracket; the discharging port of the calcining furnace is arranged at the lower part of the discharging covering head and is communicated with the inner cavity of the discharging covering head of the calcining furnace; a plurality of discharging ports of the inner cylinder of the calcining furnace are arranged on the wall of one end of the opening of the inner cylinder of the calcining furnace and are positioned in the range of the inner cavity of the discharging covering head; the inner cylinder of the calcining furnace is arranged in the outer cylinder of the calcining furnace and is coaxial with the outer cylinder of the calcining furnace, and the outer wall of the inner cylinder of the calcining furnace is fixedly connected with the inner wall of the outer cylinder of the calcining furnace through a connecting device and can synchronously rotate with the outer cylinder of the calcining furnace; the discharging covering head is arranged at one end of the opening of the inner cylinder of the calcining furnace, wraps the periphery of the inner cylinder of the calcining furnace and is fixedly arranged on the mounting base of the calcining furnace through the mounting bracket; the dust remover sedimentation conveying pipe is arranged between the dust remover sedimentation outlet and the feeding head, and two ends of the dust remover sedimentation conveying pipe are respectively communicated with the dust remover sedimentation outlet and the inner cavity of the feeding head; the position of the dust remover sedimentation conveying pipe at one end of the dust remover is higher than that of the dust remover sedimentation conveying pipe at one end of the feeding head; the sedimentation outlet of the dust remover is arranged at the lower end of the cyclone dust remover and is connected with the lower opening of the conical inner cavity at the lower part of the cyclone dust remover; the calcining system exhaust pipe is arranged at the air outlet of the cyclone dust collector and is connected with the air outlet of the cyclone dust collector, and the other end of the calcining system exhaust pipe is connected with the exhaust fan; the cyclone dust collector is arranged near a feeding wrapping head and a discharging wrapping head of the calcining furnace and is fixedly connected with an installation base of the calcining furnace through a bracket; the cyclone dust collector comprises a shell, an air inlet, an air outlet pipe, a cone, a sedimentation outlet and an air outlet; the shell is arranged at the periphery of the cyclone dust collector and is a spiral cavity body; the air inlet is arranged on the side edge of the upper part of the shell, and the air inlet direction of the air inlet is consistent with the spiral direction of the shell; the air outlet pipe is arranged at the upper part of the shell, is positioned on the central line of the shell, penetrates through the top of the shell and extends out of the top of the shell, and the outer wall of the air outlet pipe is fixedly connected with the top of the shell; the cone is arranged at the lower part of the shell, the large end of the cone is hermetically connected with the lower end of the shell, and the small end of the cone is connected with the sedimentation outlet; the sedimentation outlet is arranged at the lower end of the cone and is communicated with the inner cavity of the cone; the air outlet is arranged at the upper end of the air outlet pipe, is positioned on the side wall of the air outlet pipe extending out of the shell part and is communicated with the inner cavity of the air outlet pipe; the dust collector air inlet connecting pipe is arranged between an air inlet and a feeding head of the cyclone dust collector, and two ends of the dust collector air inlet connecting pipe are respectively connected with the air inlet of the cyclone dust collector and an inner cavity of the feeding head in a sealing way; the phosphogypsum feeding hole is arranged on the feeding wrapping head, is communicated with the inner cavity of the feeding wrapping head and is connected with the discharging end of the phosphogypsum conveying device; the real-time cleaning device for the sedimentation wall is arranged on the cyclone dust collector and comprises a driving motor, a speed reducer, a transmission shaft and a cleaner; the driving motor is arranged on the speed reducer and is fixedly connected with the speed reducer, and a power output shaft of the driving motor is butted with a power input shaft of the speed reducer and can transmit the power of the driving motor to the speed reducer; the speed reducer is arranged at the top of the air outlet pipe of the cyclone dust collector and is fixedly connected with the top of the air outlet pipe, and a power output shaft of the speed reducer is fixedly connected with the transmission shaft and can drive the transmission shaft to rotate; the cleaner is arranged on the transmission shaft, is fixedly connected with the transmission shaft and is positioned in the inner cavity of the cone; the number of the cleaners is more than one, the outer end of each cleaner is provided with an inclined plane, and the inclination angle of each inclined plane is matched with the inclination of the inner wall of the cone; the cleaner is made of elastic material, such as steel plate, plastic plate, rubber plate, or metal wire brush.

Advantageous effects

The invention has the advantages that smooth feeding and no blockage of the calcining furnace can be realized, the times of shutdown cleaning and the operation cost are reduced, and the production efficiency is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention

1. The device comprises an outer barrel of a calcining furnace, 2. a feeding covering head, 3. a discharging port of the calcining furnace, 4. a discharging port of the inner barrel of the calcining furnace, 5. the inner barrel of the calcining furnace, 6. a discharging covering head, 7. a settling conveying pipe of a dust remover, 8. a settling outlet of the dust remover, 9. an exhaust pipe of a calcining system, 10. a cyclone dust remover, 11. an air inlet connecting pipe of the dust remover and 12. a phosphogypsum feeding port.

FIG. 2 is a schematic view of the external structure of the cyclone dust collector

8. The method comprises the following steps of (1) a dust remover sedimentation outlet, 9 a calcination system exhaust pipe, 10 a cyclone dust remover, 13 a driving motor, 101 a shell, 102 an air inlet.

FIG. 3 is a schematic sectional view of a cyclone

8. The device comprises a dust remover sedimentation outlet, a 9 calcining system exhaust pipe, a 10 cyclone dust remover, a 13 driving motor, a 14 speed reducer, a 15 transmission shaft, a 16 cleaner, a 101 shell, a 102 air inlet, a 103 air outlet pipe, a 104 cone, a 105 sedimentation outlet and a 106 air outlet.

Detailed Description

In order to better explain the technical scheme of the invention, the specific embodiments of the invention are further explained by combining the attached drawings; referring to fig. 1-3, in this embodiment, an outer cylinder, an inner cylinder, a feeding cap and a discharging cap of a phosphogypsum double-cylinder calciner currently commonly used in the industry (refer to a chinese patent previously applied by the applicant) are selected as the outer cylinder, the inner cylinder, the feeding cap 2 and the discharging cap 6 of the calciner in this embodiment, respectively, and a calciner inner cylinder discharge port 4 is arranged at an end of the calciner inner cylinder, and a phosphogypsum feed port 12 is arranged at a top of the feeding cap 2; the lower part of the discharging covering head 6 is provided with a discharging port 3 of the calcining furnace, and the outer cylinder 1 of the calcining furnace is arranged on a carrier roller according to a mode universal in the industry, is connected with a driving device and can rotate on the carrier roller under the driving of the driving device; the shell, the air inlet, the cone and the sedimentation outlet of the cyclone dust collector which is commonly used in the industry are respectively used as the shell 101, the air inlet 102, the cone 104 and the sedimentation outlet 105 of the invention; and are assembled together according to the method commonly used in the industry; selecting a steel pipe with the wall thickness of 3 mm as the air outlet pipe 103, welding one end of the air outlet pipe 103 in a sealing way by adopting a circular steel plate with the same diameter as the air outlet pipe 103, arranging a screw hole for installing a speed reducer 14 on the steel plate, and arranging a through hole of a transmission shaft 15 in the center, wherein the diameter of the through hole is more than or equal to the diameter of the transmission shaft 15; in the embodiment, an integrated driving motor assembly with a speed reducer, which is commonly used in the industry, is selected as the driving motor 13 and the speed reducer 14, the driving motor assembly and the speed reducer are installed on a head steel plate at the top of the air outlet pipe 103, a power output shaft is kept downward, and the speed reducer 14 is fixedly connected with the top of the air outlet pipe 103; the circuit part of the driving motor 13 is connected with an electric appliance control system of the calcining furnace; in this example, a seamless steel pipe is selected as the transmission shaft 15, the length of the seamless steel pipe is equal to the length of the shell 101 plus the length of the cone 104, the upper end of the transmission shaft is fixedly connected with the power output shaft of the speed reducer 14, if the length of the transmission shaft 15 is too long, a support with a bearing can be arranged at the lower end of the air outlet pipe 103, and the support is fixedly connected with the lower end of the air outlet pipe 103 to assist in supporting the transmission shaft 15; it is also possible to provide a support at the sedimentation outlet 105 as an auxiliary support for the drive shaft 15, and to avoid providing a support in the casing 101 and the cone 104 as much as possible, since this would have an effect on the air flow in the cyclone 10; in the embodiment, 3 steel plates with the thickness of 3 mm are selected as the cleaning devices 16, are uniformly distributed at the lower end of the transmission shaft 15 and are positioned at the middle lower part of the cone; one end of a cleaner 16 is vertically connected with a transmission shaft 15, an inclined surface is arranged at one end close to the inner cavity of the cone 104, the inclination of the inclined surface is matched with the inclination of the side wall of the cone 104, and the distance between the inclined surface and the wall of the cone 104 is 5-15 mm; thus, the present invention has been completed.

When the device is used, a control system of the calcining furnace is started, the outer barrel 1 of the calcining furnace is driven by a driving device to rotate on a carrier roller in a rolling manner, the phosphogypsum enters a feeding bag head from a phosphogypsum feeding hole 12 and then enters an inner cavity of the outer barrel 1 of the calcining furnace through a feeding hole arranged on the side wall of the outer barrel 1 of the calcining furnace, the phosphogypsum runs from the front end to the tail end of the outer barrel 1 of the calcining furnace under the action of a material pushing plate, a flame is sprayed from a flame spraying furnace to an opening at the front end of the inner barrel 5 of the calcining furnace, air in the inner barrel 5 of the calcining furnace is heated, hot air enters the inner cavity of the outer barrel 1 of the calcining furnace through the tail part of the inner barrel 5 of the calcining furnace, the phosphogypsum is heated, after the phosphogypsum runs from the inner cavity of the outer barrel 1 of the calcining furnace to, the heating temperature is gradually increased, and the flame directly burns, flows out from a discharge port 4 of an inner cylinder of the calcining furnace, enters a discharge cap 6, and is then discharged out of the calcining furnace through a phosphogypsum discharge port 12; meanwhile, due to the action of the exhaust fan, air is extracted from the calcining system exhaust pipe 9 of the cyclone dust collector 10, so that the process that air flows from the inner cavity of the calcining furnace inner cylinder 5 to the inner cavity of the calcining furnace outer cylinder 1 to the feeding cap 2, then to the dust collector air inlet connecting pipe 11, then to the air inlet 102 of the dust collector, then to the inner cavity of the cyclone dust collector shell 101, then to the air outlet pipe 103, then to the air outlet 106 and then to the calcining system exhaust pipe 9 is caused, because the air inlet 102 of the cyclone dust collector 10 enters the shell 101 tangentially, a rotational flow is formed in the shell 101, due to the action of centrifugal force, phosphogypsum powder brought out by the air flow collides with the shell 101 to generate sedimentation, enters the sedimentation outlet 8 of the dust collector, enters the feeding cap 2 again through the dust collector sedimentation conveying pipe 7, enters the inner cavity of the calcining furnace outer cylinder 1 again to form circulation, when the stacking height is larger than the distance between the end of the cleaner 16 and the wall of the cone, the stack is scraped off by the rotating cleaner 16 and falls to the sedimentation outlet 8 of the dust remover, so that blockage cannot be formed in the cone 104; the working cycle is formed, excessive shutdown cleaning and maintenance can not be caused, the production efficiency is improved, the maintenance cost is reduced, and the shutdown time and the shutdown times are reduced.