CN108955101B

CN108955101B - Automatic drying device

Info

Publication number: CN108955101B
Application number: CN201810792799.0A
Authority: CN
Inventors: 谢晓文
Original assignee: Wenzhou University
Current assignee: Wenzhou University
Priority date: 2018-07-18
Filing date: 2018-07-18
Publication date: 2020-09-08
Anticipated expiration: 2038-07-18
Also published as: CN108955101A

Abstract

The invention belongs to the technical field of drying equipment, and particularly discloses an automatic drying device which comprises a rack, a drying unit, a power unit and a material storage unit, wherein the material storage unit comprises a hopper and a discharge pipe; the drying unit comprises a communication column and a rotary table, a plurality of water leakage holes are formed in the surface of the rotary table, an ejector rod with the upper part positioned in the discharge pipe is fixed in the rotary table, and a stop block is arranged on the ejector rod; the upper end of the communicating column is hinged with a charging door, and an electric heating wire is arranged in the communicating column; the surface of the communicating column is provided with an annular groove, an annular ring is rotationally connected in the annular groove, and a connecting rod is arranged on the annular ring; the frame is fixed with limit strips positioned at two opposite sides of the connecting rod; the power unit comprises a cylindrical cam, a motor for driving the cylindrical cam to rotate and a transmission mechanism for driving the communicating column to rotate; one side surface of the connecting rod is in surface contact with the curved profile of the cylindrical cam. The device can solve the problem that manual feeding and discharging are needed in the process of drying materials.

Description

Automatic drying device

Technical Field

The invention belongs to the technical field of drying equipment, and particularly relates to an automatic drying device.

Background

The drying device is a combination of a series of mechanical devices for drying moisture or other liquid on the surface of an object by certain technical means. The conventional drying device has several modes such as belt drying, roller drying, box drying, tower drying and the like, heat sources comprise coal, electricity, gas and the like, and materials have a hot air flow type, a radiation type and the like in the drying process.

After cleaning the materials such as waste sand and waste plastics, the materials are usually dried to facilitate the next processing procedure. Although the existing drying device can be used for drying materials well, the materials are sent into the drying device and sent away after being dried, the operation of workers is needed, the efficiency is low, and the labor intensity of the workers is high.

Disclosure of Invention

The invention aims to provide an automatic drying device to solve the problem that manual feeding and discharging are needed in the process of drying materials.

In order to achieve the purpose, the basic scheme of the invention is as follows: the automatic drying device comprises a rack, a drying unit, a power unit and a material storage unit positioned above the drying unit, wherein the material storage unit comprises a hopper and a discharge pipe communicated with the lower end of the hopper; the drying unit comprises a hollow communicating column and a funnel-shaped rotary table fixed at the upper end of the communicating column, a plurality of water leakage holes are formed in the surface of the rotary table, an ejector rod with the upper part positioned in the discharging pipe is fixed in the rotary table, and a stop block capable of blocking the discharging pipe is arranged on the ejector rod; the upper end of the communicating column is hinged with a charging door which can be opened only to one side of the turntable, an electric heating wire is arranged in the communicating column, and a push rod fixed on the frame is arranged in the communicating column; the surface of the communicating column is provided with an annular groove, an annular ring is rotationally connected in the annular groove, and a connecting rod is arranged on the annular ring; the frame is fixedly provided with limiting strips positioned at two opposite sides of the connecting rod, and the limiting strips are used for limiting the connecting rod to rotate along with the communicating column; the power unit comprises a cylindrical cam, a motor for driving the cylindrical cam to rotate and a transmission mechanism for driving the communicating column to rotate; one side surface of the connecting rod is in surface contact with the curved profile of the cylindrical cam.

The working principle of the basic scheme is as follows: when the materials need to be dried, the motor and the electric heating wire are started, the motor drives the cylindrical cam to rotate, meanwhile, the motor drives the communicating column to rotate through the transmission mechanism, and the rotary disc on the communicating column also rotates together. Because the connecting rod remains the contact throughout with the curved profile surface of cylindrical cam, cylindrical cam pivoted in-process, cylindrical cam passes through connecting rod drive intercommunication post up-and-down motion, promptly in this scheme, the intercommunication post can up-and-down motion can rotate again. The intercommunication post drives knockout pin and dog together upwards during upward movement, and when the dog moved the take the altitude, the dog broke away from the discharging pipe, hopper and discharging pipe intercommunication, material on the hopper passed through the discharging pipe and falls on the carousel, because in this in-process carousel emergence rotation, the material on the carousel can receive the centrifugal force effect, and unnecessary moisture on the material is thrown away. Meanwhile, the distance between the communication column and the push rod becomes far, and the push rod cannot jack the bin gate open. When the communicating column moves downwards, the stop block is driven to move downwards together, when the stop block moves downwards to be positioned in the discharge pipe, the discharge pipe is blocked by the stop block, and materials in the hopper cannot be transferred to the rotary table. Meanwhile, the communication column is gradually close to the push rod, the push rod finally jacks up a material door on the communication column, the material located at the bottom of the rotary table can fall into the communication column through the material door, the material is heated by an electric heating wire in the communication column, and the material is transferred out of the communication column after the heating is completed.

The beneficial effect of this basic scheme lies in:

1. by using the device provided by the invention, automatic feeding can be realized, the material can be automatically conveyed after being dried, and both feeding and discharging do not need to be participated by workers, so that the labor intensity of the workers is reduced, and the labor cost can be reduced.

2. The material is intermittent type nature is sent into in the drying unit, and the drying unit only dries a small amount of material at every turn, ensures that the drying unit can be abundant, comprehensive dries the material, guarantees the effect of drying.

3. According to the invention, the materials are dried twice, when the materials are positioned in the turntable, the turntable drives the materials to rotate, so that water drops on the materials are effectively thrown out, and the materials are primarily dried; when the material fell along the intercommunication post, the electrical heating silk in the intercommunication post was dried the material, carries out drying process for the second time to the material, through twice drying process, can effectively guarantee the effect that the material was dried.

Furthermore, the transmission mechanism comprises a first chain wheel fixed on the output shaft of the motor, a second chain wheel connected on the communication column in a sliding manner and a chain sleeved on the first chain wheel and the second chain wheel, the surface of the communication column is provided with sliding grooves distributed along the axial direction, and the second chain wheel is fixed with a bulge connected in the sliding grooves in a sliding manner; the rack is provided with a limiting structure used for limiting the second chain wheel to move along the height direction, and the limiting structure comprises an upper stop block positioned above the second chain wheel and a lower stop block positioned below the second chain wheel. The surface of the communicating column is provided with the sliding groove, the second chain wheel is provided with the protrusion, the second chain wheel can slide along the axial direction of the communicating column, and meanwhile, when the second chain wheel rotates, the second chain wheel can drive the communicating column to move together through the protrusion and the sliding groove, so that the normal transmission of power is ensured. Set up limit structure, limit structure restriction second sprocket is along the removal of direction of height, guarantees the normal transmission between first sprocket, second sprocket and the chain.

Furthermore, the upper stop block and the lower stop block are both rotatably connected with rolling balls in contact with the second chain wheel. The setting of spin can change the sliding friction that the second sprocket received into rolling friction, reduces the wearing and tearing of second sprocket, increase of service life.

Further, the push rod is provided with a helical blade which is contacted with the inner wall of the communicating column, and the electric heating wire is arranged on the helical blade. The material after preliminary drying gets into the intercommunication post through the bin gate and then falls on helical blade, and the landing is downward followed helical blade, shifts out the intercommunication post at last. The arrangement of the helical blades prolongs the movement stroke of the material, prolongs the retention time of the material in the communicating column, and is favorable for heating and drying the material by the electric heating wire.

Further, a piston cylinder penetrated by the communicating column is fixed on the frame, a one-way air inlet valve is arranged on the piston cylinder, and the communicating column is connected with the piston cylinder in a sliding and sealing way; a pressure plate which slides and is connected in the piston cylinder in a sealing way is fixed on the communicating column; the piston cylinder is connected with an exhaust pipe with an exhaust end facing the rotary table, and the exhaust pipe is provided with a one-way exhaust valve. When the drying device works, the pressing plate rotates along with the communicating column and reciprocates up and down, namely, the pressing plate can reciprocate along the inner wall of the piston cylinder, and the pressure in the piston cylinder changes in the process. When the pressure in the piston cylinder is increased, the one-way exhaust valve is automatically opened, the gas in the piston cylinder is exhausted through the exhaust pipe, and the exhausted gas can be blown on the material of the turntable, so that the drying speed of the material is accelerated.

Further, the exhaust end of the exhaust pipe is connected with a horn-shaped air nozzle. The gas nozzle is horn-shaped, so that the discharged gas can be conveniently diffused to a larger range, and the drying of the materials on the rotary disc is facilitated.

Furthermore, a material collecting box is arranged below the communication column. The material collecting box is arranged, so that the dried materials can be collected conveniently.

Drawings

FIG. 1 is a front sectional view of an embodiment of an automatic drying apparatus according to the present invention;

fig. 2 is a top view of the annular ring, connecting rod and stop strip of fig. 1.

Detailed Description

The following is further detailed by way of specific embodiments:

the reference numerals in figures 1 to 2 of the specification include: hopper 10, discharging pipe 20, output pipe 21, communicating column 30, charging door 31, spring 32, pressure plate 33, annular ring 34, connecting rod 341, chute 35, spacing strip 36, push rod 40, helical blade 41, piston cylinder 50, exhaust pipe 51, one-way exhaust valve 511, air nozzle 512, motor 60, first sprocket 61, chain 62, cylindrical cam 63, second sprocket 64, collecting box 70, upper stop block 80, rolling ball 81, lower stop block 82, rotary table 90, ejector rod 91, stop block 92 and support 93.

As shown in fig. 1, the automatic drying device includes a frame, a drying unit, a power unit, and a material storage unit located above the drying unit. The material storage unit comprises a hopper 10 and a discharge pipe 20 communicated with the lower end of the hopper 10, the hopper 10 is used for placing materials to be dried, the bottom of the discharge pipe 20 is closed, the bottom of the discharge pipe 20 is conical, an output pipe 21 obliquely arranged is connected to the bottom of the discharge pipe 20, and the materials discharged from the output pipe 21 can fall on the surface of the rotary disc 90 instead of directly falling on the bottom of the rotary disc 90.

The drying unit comprises a hollow communicating column 30 and a turntable 90 fixed at the upper end of the communicating column 30, wherein the turntable 90 is funnel-shaped and the surface of the turntable is provided with a plurality of water leakage holes. The rotary table 90 is internally fixed with a support 93, the support 93 is welded with an ejector rod 91, the upper part of the ejector rod 91 penetrates through the discharge pipe 20 and is positioned in the discharge pipe 20, the upper end of the ejector rod 91 is fixedly connected with a stop block 92, the stop block 92 can be slidably connected in the discharge pipe 20 and can seal the discharge pipe 20, and the discharge pipe 20, the ejector rod 91, the stop block 92 and the rotation center of the communication column 30 are all positioned on the same axis. The upper end of the communication column 30 is hinged with a material door 31 which can only be opened towards one side of the turntable 90, a spring 32 is connected between the material door 31 and the communication column 30, the material door 31 can be tightly closed under the action of the spring 32, and materials in the turntable 90 are effectively prevented from being transferred into the communication column 30 through the material door 31. An annular groove is formed in the outer surface of the communication column 30, an annular ring 34 is rotatably connected in the annular groove, and as shown in fig. 2, a connecting rod 341 is welded on the annular ring 34. The frame is fixed with the spacing strips 36 that are located the relative both sides of connecting rod 341, and under the restriction of spacing strip 36, connecting rod 341 can not rotate along with the intercommunication post 30 together. A push rod 40 fixed on the frame is arranged in the communicating column 30, a helical blade 41 contacted with the inner wall of the communicating column 30 is fixed on the push rod 40, and an electric heating wire is arranged on the helical blade 41. A material collecting box 70 is arranged below the communication column 30, and the dried material finally falls into the material collecting box 70.

The power unit comprises a cylindrical cam 63, a motor 60 and a transmission mechanism for driving the communicating column 30 to rotate, an output shaft of the motor 60 is fixedly connected with the cylindrical cam 63, the motor 60 is started, and the motor 60 drives the cylindrical cam 63 to rotate. The cylindrical cam 63 is located at the right side of the communication column 30, the lower surface of the right side of the connecting rod 341 is in contact with the curved profile surface of the cylindrical cam 63, and the cylindrical cam 63 can drive the communication column 30 and the rotary disc 90 on the communication column 30 to move up and down through the connecting rod 341 when rotating. The transmission mechanism comprises a first chain wheel 61, a second chain wheel 64 and a chain 62 sleeved on the first chain wheel 61 and the second chain wheel 64, the first chain wheel 61 is fixed on the output shaft of the motor 60, and the second chain wheel 64 is connected on the communication column 30 in a sliding manner. The outer surface of the communication column 30 is provided with sliding grooves 35 distributed along the axial direction, the second chain wheel 64 is fixed with protrusions connected in the sliding grooves 35 in a sliding manner, and under the limiting action of the sliding grooves 35 and the protrusions, the second chain wheel 64 can only slide along the axial direction of the communication column 30. A limiting structure is fixed on the frame and used for limiting the second chain wheel 64 to move along the height direction; the limiting structure comprises an upper stop block 80 and a lower stop block 82, wherein the upper stop block 80 is positioned above the second chain wheel 64, the lower stop block 82 is positioned below the second chain wheel 64, and the upper stop block 80 and the lower stop block 82 are both rotatably connected with rolling balls 81 in surface contact with the second chain wheel 64.

A piston cylinder 50 is fixed on the frame, the communication column 30 penetrates through and is connected to the piston cylinder 50 in a sliding mode, and the communication column 30 is connected with the piston cylinder 50 in a sealing mode. The pressure plate 33 is fixed on the connecting column 30 and connected in the piston cylinder 50 in a sliding and sealing manner, and when the pressure plate 33 moves up and down along the inner wall of the piston cylinder 50, the pressure in the piston cylinder 50 changes. The piston cylinder 50 is provided with a one-way air inlet valve, when the pressure in the piston cylinder 50 is reduced, the one-way air inlet valve is automatically opened, and the external air can be automatically supplemented into the piston cylinder 50. The piston cylinder 50 is connected with an exhaust pipe 51 with an exhaust end facing the turntable 90, and the exhaust end of the exhaust pipe 51 is connected with a horn-shaped gas nozzle 512; the exhaust pipe 51 is provided with a one-way exhaust valve 511, when the pressure in the piston cylinder 50 increases, the one-way exhaust valve 511 is automatically opened, and the gas in the piston cylinder 50 is exhausted through the exhaust pipe 51.

The specific implementation process is as follows: the materials to be dried are placed in the hopper 10, when the materials need to be dried, the motor 60 and the electric heating wire are started, the motor 60 drives the cylindrical cam 63 to rotate, meanwhile, the motor 60 also drives the communication column 30 to rotate through the first chain wheel 61, the second chain wheel 64 and the chain 62, and the rotary disc 90 on the communication column 30 rotates together. Under the action of the self gravity of the communication column 30 and the turntable 90, the connecting rod 341 can be always in contact with the cylindrical cam 63, and in the rotating process of the cylindrical cam 63, the cylindrical cam 63 drives the communication column 30 to move up and down through the connecting rod 341, namely, in the scheme, the communication column 30 also rotates while moving up and down.

The communicating column 30 drives the ejector rod 91 and the stop block 92 to move upwards together when moving upwards, when the stop block 92 moves to a certain height, the stop block 92 is separated from the discharge pipe 20, the hopper 10 is communicated with the discharge pipe 20, materials on the hopper 10 fall into the discharge pipe 20 and finally fall onto the rotary table 90 through the output pipe 21, the rotary table 90 can rotate in the process, the materials on the rotary table 90 can be influenced by centrifugal force, and redundant moisture on the materials is thrown away. Meanwhile, the distance between the communication column 30 and the push rod 40 becomes longer, and the push rod 40 cannot push the material gate 31 open. When the connecting rod 30 moves downwards, the stopper 92 is driven to move downwards together, and when the stopper 92 moves downwards to be positioned in the discharge pipe 20, the stopper 92 blocks the discharge pipe 20, so that the material in the hopper 10 cannot be transferred to the rotating disc 90.

When the connecting rod 30 moves downwards, the stopper 92 is driven to move downwards together, and when the stopper 92 moves downwards to be positioned in the discharge pipe 20, the stopper 92 blocks the discharge pipe 20, so that the material in the hopper 10 cannot be transferred to the rotating disc 90. Meanwhile, the communicating column 30 and the push rod 40 are gradually close to each other, the push rod 40 finally jacks up the material door 31 on the communicating column 30, the material located at the bottom of the rotary disc 90 can fall on the helical blade 41 of the communicating column 30 through the material door 31, the material slides downwards along the helical blade 41, in the process, the electric heating wire on the helical blade 41 heats the material, the material is further dried, the material is transferred out of the communicating column 30 after being dried, and finally the material falls into the material collecting box 70.

During the up-and-down movement of the communication column 30, the pressure plate 33 moves together with the communication column 30, that is, the pressure plate 33 reciprocates along the inner wall of the piston cylinder 50, and the pressure inside the piston cylinder 50 changes during this process. When the pressure in the piston cylinder 50 is increased, the one-way exhaust valve 511 is automatically opened, the gas in the piston cylinder 50 is exhausted through the exhaust pipe 51, and the exhausted gas can be blown on the material of the turntable 90, so that the drying speed of the material is effectively accelerated.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. Automatic drying device, its characterized in that: the drying machine comprises a rack, a drying unit, a power unit and a material storage unit positioned above the drying unit, wherein the material storage unit comprises a hopper and a discharge pipe communicated with the lower end of the hopper; the drying unit comprises a hollow communicating column and a funnel-shaped rotary table fixed at the upper end of the communicating column, a plurality of water leakage holes are formed in the surface of the rotary table, an ejector rod with the upper part positioned in the discharging pipe is fixed in the rotary table, and a stop block capable of blocking the discharging pipe is arranged on the ejector rod; the upper end of the communicating column is hinged with a charging door which can be opened only to one side of the turntable, an electric heating wire is arranged in the communicating column, and a push rod fixed on the frame is arranged in the communicating column; the surface of the communicating column is provided with an annular groove, an annular ring is rotationally connected in the annular groove, and a connecting rod is arranged on the annular ring; the frame is fixedly provided with limiting strips positioned at two opposite sides of the connecting rod, and the limiting strips are used for limiting the connecting rod to rotate along with the communicating column; the power unit comprises a cylindrical cam, a motor for driving the cylindrical cam to rotate and a transmission mechanism for driving the communicating column to rotate; one side surface of the connecting rod is contacted with the curved profile surface of the cylindrical cam; when the communicating column moves upwards to a certain height, the stop block is separated from the discharge pipe, the hopper is communicated with the discharge pipe, and meanwhile, the distance between the communicating column and the push rod becomes far, so that the push rod cannot jack the material door; when the communicating column moves downwards, the stop dog moves downwards together, when the stop dog moves downwards to be located in the discharge pipe, the stop dog blocks the discharge pipe, meanwhile, the communicating column is gradually close to the push rod, and the push rod finally jacks up a bin gate on the communicating column.

2. The automatic drying apparatus of claim 1, wherein: the transmission mechanism comprises a first chain wheel fixed on the output shaft of the motor, a second chain wheel connected on the communication column in a sliding manner and a chain sleeved on the first chain wheel and the second chain wheel, the surface of the communication column is provided with sliding grooves distributed along the axial direction, and the second chain wheel is fixed with a bulge connected in the sliding grooves in a sliding manner; the rack is provided with a limiting structure used for limiting the second chain wheel to move along the height direction, and the limiting structure comprises an upper stop block positioned above the second chain wheel and a lower stop block positioned below the second chain wheel.

3. The automatic drying apparatus of claim 2, wherein: the upper stop block and the lower stop block are both rotatably connected with rolling balls which are in contact with the second chain wheel.

4. The automatic drying apparatus according to any one of claims 1 to 3, wherein: the push rod is provided with a helical blade which is contacted with the inner wall of the communicating column, and the electric heating wire is arranged on the helical blade.

5. The automatic drying apparatus according to any one of claims 1 to 3, wherein: a piston cylinder penetrated by the communicating column is fixed on the frame, a one-way air inlet valve is arranged on the piston cylinder, and the communicating column is connected with the piston cylinder in a sliding and sealing way; a pressure plate which slides and is connected in the piston cylinder in a sealing way is fixed on the communicating column; the piston cylinder is connected with an exhaust pipe with an exhaust end facing the rotary table, and the exhaust pipe is provided with a one-way exhaust valve.

6. The automatic drying apparatus of claim 5, wherein: the exhaust end of the exhaust pipe is connected with a horn-shaped air nozzle.

7. The automatic drying apparatus of claim 6, wherein: a material collecting box is arranged below the communication column.