Temperature-control anti-scald fluoroplastic drying device

Abstract

The utility model relates to a temperature-control anti-scalding fluoroplastic drying device in the technical field of drying equipment. The temperature-control anti-scalding fluoroplastic drying device comprises a drying kettle, a heat insulation layer is arranged on the outer wall of the drying kettle, a temperature sensor is arranged in the drying kettle, and a feeding hopper is arranged at the top of the drying kettle; a plurality of spiral feeders are sequentially arranged in the drying kettle from top to bottom, every two adjacent spiral feeders are communicated through a material guiding pipe, each spiral feeder comprises a shell and a feeding screw, through holes are distributed in the shells, air guiding cavities are formed in the feeding screws, air spraying holes communicated with the air guiding cavities are distributed in the feeding screws, and the air spraying holes are communicated with the air guiding cavities. One end of the feeding screw extends out of the drying kettle to be connected with a stepping motor, the other end of the feeding screw is connected with an air inlet pipe through a rotary joint, the air inlet pipe is communicated with the air guide cavity, and an exhaust pipe is arranged at the top of the drying kettle. The drying device is simple and reasonable in structure and convenient to use, the drying mileage is increased in an effective space, the drying effect is improved, meanwhile, continuous drying operation can be conducted, efficiency is high, and the effect is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of drying equipment, and in particular relates to a temperature-controlled and scalding-proof drying device for fluoroplastics. Background Art

[0002] Fluoroplastic is a chain alkane polymer in which part or all of the hydrogen is replaced by fluorine. Fluoroplastic can be molded into plates, rods, sleeves, tapes, sealing rings, diaphragms and parts with metal inserts, etc. A drying device is needed for drying during the production of fluoroplastics. Patent document No. CN213648256U discloses a temperature-controlled and scald-proof uniform drying device for fluoroplastics, including a shell, a protective cover is fixedly sleeved on the surface of the shell, a feed pipe is fixedly connected to the left side of the top of the shell, a net cylinder is fixedly connected to the top of the shell cavity, a frame is fixedly connected to the top of the shell, a rotating tube is penetrated at the bottom of the inner cavity of the frame, the bottom of the rotating tube penetrates the frame and the shell in turn and extends to the inner cavity of the net cylinder, an exhaust hole is opened on the surface of the rotating tube at one end of the inner cavity of the net cylinder, and a first bevel gear is fixedly sleeved on the surface of the rotating tube at one end of the inner cavity of the frame. Although the patent has the advantages of temperature control, scalding prevention, efficient and uniform drying, and convenient material discharge, when in use, the dried materials need to be discharged before the next round of material drying can be carried out, and continuous drying operation cannot be carried out, which affects production efficiency. Therefore, a temperature control and scalding prevention fluoroplastic drying device is needed to solve the above technical problems. Utility Model Content

[0003] In view of the above-mentioned defects in the prior art, the utility model provides a temperature-controlled and scalding-proof drying device for fluoroplastics, comprising a drying kettle, an insulating layer is provided on the outer wall of the drying kettle, a temperature sensor is provided in the drying kettle, a feed hopper is provided on the top of the drying kettle, and a discharge pipe is provided at the bottom of the drying kettle; a plurality of screw feeders are arranged in sequence from top to bottom in the drying kettle, the feed hopper is connected with the feed end of the uppermost screw feeder, and two adjacent screw feeders are connected through a guide pipe, the screw feeder comprises a shell and a feeding screw, the shell is covered with through holes, an air guide cavity is provided in the feeding screw, and the feeding screw is covered with jet holes connected with the air guide cavity, one end of the feeding screw extends out of the drying kettle and is connected with a stepping motor, the other end of the feeding screw is connected with an air intake pipe through a rotary joint, the air intake pipe is connected with the air guide cavity, and an exhaust pipe is provided on the top of the drying kettle.

[0004] Preferably, the screw feeder is tilted in the drying kettle, and the discharge end of the screw feeder is higher than the feed end of the screw feeder. This arrangement can increase the time the material stays in the screw feeder, so that the time it stays in the screw feeder can be more effectively dried, thereby improving the drying effect.

[0005] Preferably, the two separated screw feeders are parallel to each other, and one end of the feeding screws of the two parallel screw feeders are extended out of the drying kettle and are respectively fixedly connected to sprockets. The two sprockets are connected by a transmission chain, and one of the feeding screws is connected to a stepper motor, which saves resources and improves resource utilization.

[0006] Preferably, the cross section of the bottom of the drying kettle is conical, which is convenient for unloading materials into the drying kettle and reduces the residual materials.

[0007] The utility model also includes other components that enable the normal use of a temperature-controlled and scald-proof drying device for fluoroplastics, such as a stepper motor control component, a temperature sensor control component, a control component (such as an air pump) for controlling hot air to enter the feed screw, etc., which are all conventional technical means in the field. In addition, the devices or components not limited in the utility model, such as a rotary joint, a feed screw, a sprocket transmission chain, a heat insulation layer, a temperature sensor, etc., all adopt conventional technical means and conventional equipment in the field.

[0008] Working principle: When in use, hot air is introduced into each feeding screw, and the material enters the uppermost screw feeder from the feed hopper and is continuously transported to the discharge end of the screw feeder by the feeding screw. During the transportation, the hot air ejected from the jet hole is used for drying. After being dried by multiple screw feeders, the material is discharged from the discharge pipe of the drying kettle. The hot air during the drying process is discharged from the exhaust pipe for separate treatment. The heat insulation layer can prevent the staff from being scalded. The temperature sensor can sense the temperature in the drying kettle and adjust the parameters such as the rate or temperature of the hot air introduced into the feeding screw in time according to the temperature in the drying kettle, so as to make rational use of resources and avoid waste or adverse effects on materials caused by excessive temperature.

[0009] The utility model has the following beneficial effects: simple and reasonable structure, convenient use, increased drying mileage within an effective space, improved drying effect, and can perform continuous drying operation with high efficiency and good effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0011] Figure 1 The utility model is a schematic structural diagram of a temperature-controlled and scalding-proof drying device for fluoroplastics in an embodiment of the utility model.

[0012] In the figure: 1. drying kettle; 2. feed hopper; 3. exhaust pipe; 4. shell; 5. feeding screw; 6. air jet hole; 7. transmission chain; 8. stepper motor; 9. rotary joint; 10. air inlet pipe; 11. material guide pipe; 12. discharge pipe. DETAILED DESCRIPTION

[0013] The present invention is described in detail below in conjunction with the drawings and specific embodiments in the embodiments of the present invention. The description here is only used to explain the present invention, but not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work, any modifications, equivalent replacements, improvements, etc., should be included in the protection scope of the present invention. Example

[0014] like Figure 1 As shown, the utility model provides a temperature-controlled and scalding-proof drying device for fluoroplastics, comprising a drying kettle 1, an insulating layer is provided on the outer wall of the drying kettle 1, a temperature sensor is provided in the drying kettle 1, a feed hopper 2 is provided on the top of the drying kettle 1, and a discharge pipe 12 is provided at the bottom of the drying kettle 1; a plurality of screw feeders are arranged in sequence from top to bottom in the drying kettle 1, the feed hopper 2 is communicated with the feed end of the uppermost screw feeder, and two adjacent screw feeders are communicated through a guide pipe 11, the screw feeder comprises a shell 4 and a feeding screw 5, the shell 4 is covered with through holes, an air guide cavity is provided in the feeding screw 5, and the feeding screw 5 is covered with jet holes 6 connected with the air guide cavity, one end of the feeding screw 5 extends out of the drying kettle 1 and is connected with a stepping motor 8, the other end of the feeding screw 5 is connected with an air intake pipe 10 through a rotary joint 9, the air intake pipe 10 is communicated with the air guide cavity, and an exhaust pipe 3 is provided on the top of the drying kettle 1.

[0015] The screw feeder is tilted in the drying kettle 1, and the discharge end of the screw feeder is higher than the feed end of the screw feeder. This arrangement can increase the time the material stays in the screw feeder, so that the time it stays in the screw feeder can be more effectively dried, thereby improving the drying effect.

[0016] The two separated spiral feeders are parallel to each other. One end of the feeding screw 5 of the two parallel spiral feeders extends out of the drying kettle 1 and is fixedly connected to a sprocket respectively. The two sprockets are connected by a transmission chain 7. One of the feeding screws 5 is connected to a stepper motor 8, which saves resources and improves resource utilization.

[0017] The cross section of the bottom of the drying vessel is conical, which is convenient for unloading the drying vessel 1 and reduces the residual materials.

[0018] During use, hot air is introduced into each feeding screw 5, and the material enters the uppermost screw feeder from the feed hopper 2, and is continuously transported to the discharge end of the screw feeder by the feeding screw 5. During the transportation, the hot air ejected from the jet hole 6 performs a drying operation. After being dried by multiple screw feeders, the material is discharged from the discharge pipe 12 of the drying kettle 1, and the hot air during the drying process is discharged from the exhaust pipe 3 for separate treatment. The heat insulation layer can prevent the staff from being scalded. The temperature sensor can sense the temperature in the drying kettle 1, and timely adjust the parameters such as the rate or temperature of the hot air introduced into the feeding screw 5 according to the temperature in the drying kettle 1, so as to make rational use of resources and avoid waste or adverse effects on materials caused by excessive temperature.

[0019] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A temperature-controlled and scald-proof drying device for fluoroplastics, comprising a drying kettle, an insulating layer is provided on the outer wall of the drying kettle, a temperature sensor is provided in the drying kettle, a feed hopper is provided on the top of the drying kettle, and a discharge pipe is provided at the bottom of the drying kettle; characterized in that: A plurality of screw feeders are arranged in sequence from top to bottom in the drying kettle, the feed hopper is connected to the feed end of the uppermost screw feeder, and two adjacent screw feeders are connected via a guide pipe, the screw feeder comprises a shell and a feeding screw, the shell is covered with through holes, an air guide cavity is arranged in the feeding screw, and the feeding screw is covered with jet holes connected to the air guide cavity, one end of the feeding screw extends out of the drying kettle and is connected to a stepper motor, the other end of the feeding screw is connected to an air inlet pipe via a rotary joint, the air inlet pipe is connected to the air guide cavity, and an exhaust pipe is arranged on the top of the drying kettle.

2. A temperature-controlled and scald-proof drying device for fluoroplastics according to claim 1, characterized in that: The screw feeder is arranged obliquely in the drying kettle, and the discharge end of the screw feeder is higher than the feed end of the screw feeder.

3. A temperature-controlled and scald-proof drying device for fluoroplastics according to claim 2, characterized in that: The two separated spiral feeders are parallel to each other. One end of the feeding screws of the two parallel spiral feeders extends out of the drying kettle and is fixedly connected to sprockets respectively. The two sprockets are connected by a transmission chain, and one of the feeding screws is connected to a stepper motor.

4. A temperature-controlled and scald-proof drying device for fluoroplastics according to claim 1, characterized in that: The cross section of the bottom of the drying oven is conical.

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