CN213119972U

CN213119972U - Spiral conveying dryer

Info

Publication number: CN213119972U
Application number: CN202021734836.1U
Authority: CN
Inventors: 叶翔
Original assignee: Shenzhen Crystal Energy Tech Co ltd
Current assignee: Shenzhen Jiejing Technology Co ltd
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2021-05-04
Anticipated expiration: 2030-08-17

Abstract

The utility model provides a spiral conveying desicator, including drying tube and spiral conveying module, the drying tube includes the transportation layer and overlaps the hot gas layer in the transportation layer outside with the cover, and the transportation layer is provided with feed inlet and discharge gate, and the transportation layer is provided with moisture export and outlet, and the hot gas layer is provided with steam inlet and steam outlet, and the spiral conveying module is including rotationally setting up at the intraformational hob of transportation, and the hob sets up along the length direction of drying tube. During operation, solid matter is thrown into the conveying layer from the feed inlet, and high-temperature gas gets into the hot gas layer from the hot gas import, and high-temperature gas heats solid matter through the heat transfer effect indirectly, realizes the drying effect, and high-temperature gas does not directly contact with solid matter, can reduce the production of harmful substance.

Description

Spiral conveying dryer

Technical Field

The utility model relates to a solid waste handles research field, especially a spiral delivery desicator.

Background

Solid materials, including solid products and solid waste, are often required for disposal in production and life. The solid product comprises inorganic salt products, and the solid waste comprises kitchen waste, medical waste, sludge, miscellaneous salt and the like. These solid materials often contain a certain amount of water, and in the case of the solid materials, a general treatment process including dewatering reduction, drying, etc. can reduce the water content of the solid materials for the subsequent process.

Spiral dryer among the prior art generally lets in high-temperature gas for example steam in the pipeline, make moisture be heated the evaporation and reach the effect that reduces the moisture content, but the steam of letting in can influence each other with solid matter, steam also can react with certain component in the solid matter when evaporating moisture on the one hand and produce harmful substance, these harmful substances are discharged along with moisture, can cause the pollution to the system, on the other hand when solid matter is too much in the pipeline, the pipeline takes place to block up, can influence high-temperature gas's normal flow, it is unsatisfactory to make the treatment effect.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a screw conveying desicator, screw conveying desicator can reduce the production of harmful substance.

According to the utility model provides a spiral conveying desicator, including drying tube and spiral conveying module, the drying tube includes transport layer and cover the hot gas layer in the transport layer outside, the transport layer is provided with the feed inlet that is used for the feeding and is used for the discharge gate of the ejection of compact, the transport layer is provided with the outlet that is used for carminative moisture export and is used for the drainage, the hot gas layer is provided with hot gas inlet and hot gas outlet, the spiral conveying module is including rotationally setting up carry intraformational hob, the hob is followed the length direction setting of drying tube.

According to the utility model provides a spiral conveying desicator has following technological effect at least: during operation, solid matter is thrown into the conveying layer from the feed inlet, and high-temperature gas gets into the hot gas layer from the hot gas import, and high-temperature gas heats solid matter through the heat transfer effect indirectly, realizes the drying effect, and high-temperature gas does not directly contact with solid matter, can reduce the production of harmful substance.

According to some embodiments of the invention, the drying tube comprises an inner tube and an outer tube, the outer tube being sleeved outside the inner tube, the inner tube surrounding the transport layer, the outer tube and the interlayer of the inner tube forming the hot gas layer.

According to some embodiments of the present invention, the hot gas layer is provided with a heat insulating layer.

According to some embodiments of the invention, the material of the insulation layer comprises rock wool material.

According to some embodiments of the invention, the hot gas layer is provided with a pressure sensor and/or a temperature sensor.

According to the utility model discloses a some embodiments, the drying tube is provided with a plurality of maintenance manhole, the maintenance manhole intercommunication transport layer and external environment, be provided with detachable manhole flange on the maintenance manhole.

According to some embodiments of the utility model, the inspection manhole is provided with the sight glass.

According to some embodiments of the invention, the one end of the screw rod is connected with a motor.

According to some embodiments of the utility model, at least one end of drying tube is provided with detachable sealing flange.

According to some embodiments of the utility model, the motor adopts variable frequency speed motor.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a front view of a screw conveyor dryer according to the present invention.

Reference numerals:

a screw rod 1, a fin 11, a motor 12, a coupling 13,

A drying tube 2, a conveying layer 21, a feed inlet 211, a discharge outlet 212, a moisture outlet 213, a drain outlet 214,

Hot gas layer 22, hot gas inlet 221, hot gas outlet 222, pressure sensor 223, temperature sensor 224,

Heat preservation 23, inspection manhole 24, sight glass 241.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

According to the utility model provides a spiral conveying dryer, spiral conveying dryer includes drying tube 2 and spiral conveying module, drying tube 2 is including carrying layer 21 and the cover hot-air layer 22 in the layer 21 outside of carrying, carry layer 21 to be provided with the feed inlet 211 that is used for the feeding and the discharge gate 212 that is used for the ejection of compact, carry layer 21 to be provided with and be used for carminative moisture export 213 and the outlet 214 that is used for the drainage, hot-air layer 22 is provided with hot gas inlet 221 and hot gas outlet 222, spiral conveying module is including rotationally setting up hob 1 in carrying layer 21, hob 1 sets up along drying tube 2's length direction.

Specifically, the drying tube 2 may be a double tube, and in some embodiments, for example, as shown in fig. 1, the drying tube 2 includes an inner tube and an outer tube, the inner tube of the drying tube 2 surrounds to form the transport layer 21, and the interlayer of the outer tube and the inner tube of the drying tube 2 forms the hot gas layer 22. The drying tube 2 may also adopt other design schemes, in some embodiments, the drying tube 2 is a single-layer pipe, a jacket in a circular pipe shape is arranged inside the drying tube 2, the jacket divides the drying tube 2 into two chambers, the chamber inside the jacket is a conveying layer 21, and the chamber outside the jacket is a hot air layer 22. In some embodiments, the drying tube 2 comprises an inner tube and a heating sleeve arranged outside the inner tube, a chamber is arranged between the inner wall and the outer wall of the heating sleeve, the chamber is arranged as a hot gas layer 22, the chamber is communicated with the outside through a hot gas inlet 221 and a hot gas outlet 222, the inner tube surrounds and forms the conveying layer 21, and the wall of the inner tube and the inner wall of the sleeve separate the passage of the high-temperature gas from the passage of the solid matter. The drying pipe 2 may be a circular pipe, and the drying pipe 2 may also be a prismatic pipe.

The conveying layer 21 is provided with a feeding hole 211 and a discharging hole 212, specifically, one end of the conveying layer 21 is provided with the feeding hole 211, the other end of the conveying layer 21 is provided with the discharging hole 212, and the distance between the feeding hole 211 and the discharging hole 212 is set to be long, so that the solid substance stays in the drying tube for a long time, and a good drying effect can be achieved. The moisture outlet 213 and the drain port 214 are disposed at the same end of the discharge port 212, the opening direction of the moisture outlet 213 is directed upward, and the opening direction of the drain port 214 is directed downward, so that the moisture evaporated from the solid substance and the squeezed water can be smoothly discharged.

The hot gas layer 22 is provided with a hot gas inlet 221 and a hot gas outlet 222, specifically, as shown in fig. 1, the hot gas inlet 221 and the hot gas outlet 222 are arranged at two ends of the hot gas layer 22, and the distance between the hot gas inlet 221 and the hot gas outlet 222 is as far as possible, so that high-temperature gas can fill the whole hot gas layer 22, the contact area between the high-temperature gas and the heat conducting material is increased, and the heat transfer effect is improved.

The screw rod 1 pushes the solid matter to move through the fins 11 formed on the screw rod 1, and the fins 11 on the screw rod 1 can be a continuous spiral structure or a discrete spiral structure formed by splicing and combining a plurality of sections of blades.

According to the utility model provides a screw conveying desicator, during operation, solid matter drops into conveying layer 21 from feed inlet 211, and the hob 1 is rotatory to be promoted solid matter and is advanced to finally discharge from discharge gate 212. The high temperature gas enters the hot gas layer 22 from the hot gas inlet 221 and is discharged from the hot gas outlet 222, the high temperature gas indirectly heats the solid substance through heat transfer, so that the moisture of the solid substance is evaporated, and the evaporated moisture is discharged from the moisture outlet 213, thereby realizing the drying effect. The screw 1 also exerts an extrusion effect on the solid matter when rotating, and the water content of the solid matter is further reduced by discharging the extruded water through the water discharge port 214. The high-temperature gas does not directly contact with the solid matter in the working process of the spiral conveying dryer, so that the possibility of reaction between the components of the high-temperature gas and the solid matter is reduced, the generation of harmful substances can be reduced, and the flow of the high-temperature gas is not influenced by the amount of the solid matter in the conveying layer 21. In addition, the high-temperature gas discharged from the hot gas outlet 222 can recover waste heat for reuse, and the energy utilization efficiency of the spiral conveying dryer is improved.

According to some embodiments of the present invention, a thermal insulation layer 23 is disposed outside the hot gas layer 22. According to some embodiments of the present invention, the material of the insulation layer 23 comprises rock wool material. On one hand, the heat insulation layer 23 can reduce heat exchange between the surface of the hot gas layer 22 and the external environment, reduce heat loss of high-temperature gas, play a role in improving energy efficiency and reduce cost. On the other hand, heat preservation 23 can also play the isolation, prevents that operating personnel direct contact from reaching the surface of hot gas layer 22, reduces the risk that operating personnel is scalded by the auger delivery desicator.

According to some embodiments of the present invention, the hot gas layer 22 is equipped with a pressure sensor 223 and/or a temperature sensor 224. The pressure sensor 223 and the temperature sensor 224 can detect the condition of the high-temperature gas in the hot gas layer 22, and provide a basis for judging whether the stability of gas supply and the gas state meet the requirements. Furthermore, the input high-temperature gas can be adjusted according to the obtained pressure and temperature data, and the drying effect of the spiral conveying dryer is improved.

According to the utility model discloses a some embodiments, drying tube 2 is provided with a plurality of maintenance manhole 24, and maintenance manhole 24 communicates transfer floor 21 and external environment, and maintenance manhole 24 can be sealed or open through the manhole flange. For example, as shown in fig. 1, one service manhole 24 is provided at each of the screw dryers near both ends, and one service manhole 24 is provided at the middle of the screw dryer. When the screw conveying dryer breaks down or other conditions that need to be adjusted appear in the layer 21 of carrying, can conveniently operate the inside of layer 21 of carrying through overhauing manhole 24, make things convenient for operating personnel to maintain the work, when need not maintaining, overhaul manhole 24 and pass through the manhole flange and seal, can not influence the normal work of screw conveying dryer. According to some embodiments of the utility model, the inspection manhole 24 sets up the sight glass 241, and the material of sight glass 241 is transparent material, and sight glass 241 is fixed on the inspection manhole 24, and operating personnel can conveniently know the operating condition of auger delivery desicator and discover the latent problem in the auger delivery desicator work in time through the inside situation of conveying layer 21 of sight glass 241 direct observation. The sight glass 241 may be integrated with the manhole flange, for example, a transparent viewing window is provided in the middle of the manhole flange, the manhole 24 may be opened by removing the manhole flange, or the sight glass 241 and the manhole flange may be separated, for example, the sight glass 241 is a transparent circular plate, the sight glass 241 covers the manhole 24, the manhole flange is a hollow circular ring shape, the manhole flange is connected with the manhole 24 and presses the sight glass 241, and the manhole flange is removed and the sight glass 241 is removed, so that the manhole 24 may be opened.

According to some embodiments of the utility model, the one end of hob 1 is connected with motor 12, and motor 12 drives hob 1 and takes place to rotate. Specifically, in some embodiments, the motor 12 may be a variable frequency variable speed motor. The retention time of the solid matters in the drying tube 2 is controlled by adjusting the rotating speed of the motor 12, so that the dehydration and drying effects can be ensured to meet the requirements. The motor 12 and the screw rod 1 can be connected by a coupling 13. The shaft coupling 13 can be a flexible shaft coupling, and the rotating stability of the screw rod 1 is improved. For example, the coupling 13 is connected with the screw rod 1 through a key connection, the coupling 13 is connected with the motor 12 through a key connection, synchronous rotation of the motor 12 and the screw rod 1 is achieved, and when vibration or other factors cause relative position movement between the motor 12 and the screw rod 1, the flexible coupling can play a certain compensation role, so that operation is kept stable. Of course, the motor 12 and the screw rod 1 may be connected by other methods, such as belt transmission, chain transmission or gear transmission, and the designer may select a suitable transmission method according to a specific working condition to obtain a suitable transmission effect.

According to some embodiments of the utility model, 2 at least one ends of drying tube are provided with detachable sealing flange. After the sealing flange is disassembled, the drying pipe 2 forms an opening, the screw rod 1 can be disassembled and taken out, the screw rod 1 can be overhauled and maintained to a large extent, the screw rod 1 can be replaced by a new screw rod 1 after being damaged, the conveying layer 21 after the screw rod 1 is removed can be maintained, and the maintainability of the spiral conveying dryer is improved. Specifically, one end of the drying tube 2 may be provided with a detachable sealing flange, and the other end of the drying tube 2 is sealed, for example, the other end of the drying tube 2 is provided with a welding-connected sealing flange, or both ends of the drying tube 2 may be provided with detachable sealing flanges.

A screw conveyor dryer according to an embodiment of the present invention is described in detail below in a specific embodiment with reference to fig. 1. It is to be understood that the following description is illustrative only and is not intended as a specific limitation on the invention.

The embodiment of the utility model provides a including drying tube 2 and auger delivery module.

The drying tube 2 is an integrally formed cylindrical double-layer metal pipeline, the drying tube 2 is provided with an inner tube and an outer tube, the inner tube of the drying tube 2 forms a conveying layer 21, an interlayer of the inner tube and the outer tube of the drying tube 2 forms a hot gas layer 22, the inner tube and the outer tube are not communicated with each other, and heat of the hot gas layer 22 is transmitted to the conveying layer 21 through the tube wall of the inner tube. One end of the transport layer 21 is provided with a feed hole 211, and the other end of the transport layer 21 is provided with a discharge hole 212, a moisture outlet 213, and a drain hole 214. The opening direction of the moisture outlet 213 is directed upward, and the opening direction of the drain port 214 is directed downward. The hot gas layer 22 is provided with a hot gas inlet 221 and a hot gas outlet 222, the hot gas inlet 221 is arranged at a position close to the feed port 211, the hot gas outlet 222 is arranged at a position close to the discharge port 212, and the openings of the hot gas inlet 221 and the hot gas outlet 222 face downward. The hot gas layer 22 is provided with a pressure sensor 223 and a temperature sensor 224, the outer side of the hot gas layer 22 is provided with an insulating layer 23, and the material of the insulating layer 23 comprises rock wool material.

The drying pipe 2 is provided with three inspection manholes 24, the inspection manholes 24 are communicated with the conveying layer 21 and the external environment, wherein two inspection manholes 24 are respectively arranged at the positions of two ends of the spiral conveying dryer, and one inspection manhole 24 is arranged at the middle position of the spiral conveying dryer. The inspection manhole 24 is provided with a transparent viewing mirror 241 and a manhole flange for opening and closing the inspection manhole 24, specifically, the viewing mirror 241 is a transparent circular plate, the viewing mirror 241 covers the inspection manhole 24, the manhole flange is in a hollow circular ring shape, the manhole flange is connected with the inspection manhole 24 by bolts and presses the viewing mirror 241, and the inspection manhole 24 can be opened by removing the manhole flange and removing the viewing mirror 241. Both ends of the drying tube 2 are provided with detachable sealing flanges.

The spiral conveying module comprises a spiral rod 1 which is rotatably arranged in a conveying layer 21, the spiral rod 1 is arranged along the length direction of a drying tube 2, a spiral fin 11 in a spiral shape is formed on the spiral rod 1, the spiral conveying module further comprises a motor 12 which is connected with the spiral rod 1 through a flexible coupling, and the motor 12 adopts a variable frequency speed regulating motor.

According to the utility model discloses auger delivery desicator through the design more than adopting, can realize such some functions at least: in operation, solid material is fed into the conveying layer 21 from the feeding port 211, the motor 12 rotates the screw rod 1, and the fins 11 spirally push the solid material to advance and finally discharge from the discharging port 212. The high temperature gas enters the hot gas layer 22 from the hot gas inlet 221 and is discharged from the hot gas outlet 222, the high temperature gas indirectly heats the solid substance through heat transfer, so that the moisture of the solid substance is evaporated, and the evaporated moisture is discharged from the moisture outlet 213, thereby realizing the drying effect. The screw 1 also exerts an extrusion effect on the solid matter when rotating, and the water content of the solid matter is further reduced by discharging the extruded water through the water discharge port 214. The high-temperature gas does not directly contact with the solid matter in the working process of the spiral conveying dryer, so that the possibility of reaction between the components of the high-temperature gas and the solid matter is reduced, the generation of harmful substances can be reduced, and the flow of the high-temperature gas is not influenced by the amount of the solid matter in the conveying layer 21. Meanwhile, the discharged high-temperature gas can not carry volatile components in the solid substances, and the high-temperature gas discharged from the hot gas outlet 222 can conveniently recover waste heat for reuse, so that the energy utilization efficiency of the spiral conveying dryer is improved.

On one hand, the heat insulation layer 23 can reduce heat exchange between the surface of the hot gas layer 22 and the external environment during working, reduce heat loss of high-temperature gas, play a role in improving energy efficiency and reduce cost. On the other hand, heat preservation 23 can also play the isolation, prevents that operating personnel direct contact from reaching the surface of hot gas layer 22, reduces the risk that operating personnel is scalded by the auger delivery desicator.

During operation, an operator can monitor the working condition of the spiral conveying dryer through the sight glass 241, the pressure sensor 223 and the temperature sensor 224, and can accurately know and adjust the working condition of the spiral conveying dryer. For example, the speed and pressure of the high-temperature gas and the temperature of the high-temperature gas are adjusted, the rotating speed of the motor 12 can be adjusted, the retention time of the solid matters in the spiral conveying dryer is controlled, and the drying effect of the spiral conveying dryer is improved. When vibration or other factors cause relative position movement between the motor 12 and the screw rod 1, the flexible coupling can play a certain compensation role, so that the operation is kept stable.

When the screw conveying dryer needs to be maintained, a manhole flange arranged on an inspection manhole 24 can be opened to operate the inside of the conveying layer 21, a sealing flange on the bottom surface of the drying pipe 2 can also be opened, the screw rod 1 is disassembled and taken out, the screw rod 1 is repaired or replaced, and the maintenance operation is performed on the inside of the drying pipe 2 after the screw rod 1 is disassembled. The maintenance of the screw conveyor dryer is improved by the design of the inspection manhole 24 and the sealing flange on the bottom surface of the drying pipe 2.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A screw conveyor dryer, comprising:

the drying pipe (2), the drying pipe (2) comprises a conveying layer (21) and a hot air layer (22) sleeved outside the conveying layer (21), the conveying layer (21) is provided with a feeding hole (211) for feeding and a discharging hole (212) for discharging, the conveying layer (21) is provided with a moisture outlet (213) for exhausting and a water outlet (214) for draining, and the hot air layer (22) is provided with a hot air inlet (221) and a hot air outlet (222);

the spiral conveying module comprises a spiral rod (1) rotatably arranged in the conveying layer (21), and the spiral rod (1) is arranged along the length direction of the drying pipe (2).

2. The screw conveyor dryer according to claim 1, wherein: the drying tube (2) comprises an inner tube and an outer tube, the outer tube is sleeved outside the inner tube, the inner tube surrounds to form the conveying layer (21), and the interlayer of the outer tube and the inner tube forms the hot air layer (22).

3. The screw conveyor dryer according to claim 1 or 2, wherein: and a heat insulation layer (23) is arranged on the outer side of the hot air layer (22).

4. The screw conveyor dryer according to claim 3, wherein: the material of the heat insulation layer (23) comprises rock wool material.

5. The screw conveyor dryer according to claim 1 or 2, wherein: the hot gas layer (22) is provided with a pressure sensor (223) and/or a temperature sensor (224).

6. The screw conveyor dryer according to claim 1 or 2, wherein: drying tube (2) are provided with a plurality of and overhaul manhole (24), overhaul manhole (24) intercommunication carry layer (21) and external environment, be provided with detachable manhole flange on overhaul manhole (24).

7. The screw conveyor dryer according to claim 6, wherein: the inspection manhole (24) is provided with a sight glass (241).

8. The screw conveyor dryer according to claim 1 or 2, wherein: one end of the screw rod (1) is connected with a motor (12).

9. The screw conveyor dryer according to claim 8, wherein: at least one end of the drying tube (2) is provided with a detachable sealing flange.

10. The screw conveyor dryer according to claim 8, wherein: the motor (12) adopts a variable-frequency speed-regulating motor.