JPH10339571A - Drying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a drying device having a small installing space, showing a less number of occurrence of trouble and producing a high drying efficiency to be attained which is operated such that a cylindrical casing is vibrated and hot air is blown out onto a transferring slope installed in a helical manner in a vertical direction between a circumferential wall of an inner cylinder and a circumferential wall of a cylindrical casing. SOLUTION: The upper end surface of a cylindrical casing 3 supported on a base table 1 through a compression coil spring 2 in such a manner that it can be vibrated is closed by a cover 4 and also the lower end surface of the cylindrical casing 3 is closed by a supporting plate 5. A vibrating motor 7 is fixed to the lower surface of the supporting plate 5. In addition, an inner cylinder 8 is concentrically arranged within a casing 3, a transferring slope 9 is arranged helically in a vertical direction between a circumferential wall of a cylinder 8 and a circumferential wall of the casing 3, an inlet duct 10 is communicated with the lower end of the transferring slope 9 and an outlet duct 11 is communicated with the upper end of the transferring slope 9. Then, several hot air blowing-out holes 12 for use in blowing out hot air onto the transferring slope 9 are formed at a circumferential wall of the inner cylinder 8 in a helical manner and then hot air is blown into the hot air blowing-out holes 12 through an inner space.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drying apparatus in a refuse treatment facility or the like.

[0002]

2. Description of the Related Art FIG. 5 shows a conventional drying apparatus. The apparatus shown in FIG. 5A is for drying the dried product placed on the conveyor 101 passing through the casing 100 with hot air introduced into the casing 100 from a hot air inlet. Hot air obtained by drying the dried product is led out from a hot air outlet.

[0005] The apparatus shown in FIG. 5 (b) stores a dried product in a drum 103 provided with a conveying screw 102 on an inner peripheral surface thereof, and introduces hot air into the drum 103 from a hot air inlet while removing the drum 103. By rotating, the dried product is stirred and dried. Hot air obtained by drying the dried product is led out from a hot air outlet. In the figure, reference numeral 104 denotes a seal for rotatably sealing the drum 103, and reference numeral 105 denotes a roller for rotatably supporting the drum 103.

[0004]

However, the conventional drying apparatus described above has the following problems. Since a conveyor or rotary kiln is used, if the residence time is long to dry the dried product sufficiently,
The distance required for drying (such as the length of a conveyor) becomes longer, and a larger installation area is required. In the case of using a conveyor or the like, since there are many sliding parts and rotating parts (combination of slats and rollers), many failures due to seizure and abrasion have occurred.

Accordingly, an object of the present invention is to provide a drying apparatus which has a small installation space, has few failures, and has a high drying efficiency.

[0006]

In order to achieve the above-mentioned object, a drying apparatus according to the present invention comprises a tubular casing which is supported so as to be able to vibrate, and has a closed upper and lower end face, and vibrates the tubular casing. A vibrating means, an upper and lower closed inner cylindrical body erected in the cylindrical casing, and a vertically spirally disposed between the peripheral walls of the inner cylindrical body and the cylindrical casing. A conveying slope, an inlet duct communicating with a lower end of the conveying slope, an outlet duct communicating with an upper end of the conveying slope, a number of hot air blowing holes for blowing hot air onto the conveying slope, and It is characterized by comprising hot air supply means for feeding hot air through the inside of the cylindrical body, and an exhaust pipe communicating with the upper part of the cylindrical casing.
Further, the hot air outlet is characterized by being opened in the peripheral wall of the inner cylindrical body. Further, the hot air outlet is opened on the upper surface of the transport slope. Further, the hot air outlet is opened at a position where hot air is blown toward the upper surface of the transport slope. Further, the hot air outlet is characterized by being opened in the transport direction.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a drying apparatus according to the present invention will be described in detail using embodiments with reference to the drawings.

[First Embodiment] FIG. 1 is a sectional view (FIG. 1A) and a plan view (FIG. 1B) of a drying apparatus according to a first embodiment of the present invention.

As shown in the figure, a cylindrical casing 3 is supported on a mount 1 via a compression coil spring 2 so as to be able to vibrate. The upper end surface of the casing 3 is closed by a cover 4 and the lower end surface is closed by a support plate 5.

A pair of front and rear vibration motors 7 are mounted on the lower surface of the support plate 5 via mounting bases 6, respectively.

In the casing 3, an inner cylindrical body 8 made of a cylinder and closed at the upper end face is disposed concentrically with the casing 3, and the lower end face is closed by the support plate 5.

A conveying slope 9 is provided between the inner cylinder 8 and the peripheral wall of the casing 3 in a spiral manner in the vertical direction.
An inlet duct (garbage inlet) 1 at the lower end of the transfer slope 9
0 is communicated, and an outlet duct (garbage carry-out port) 11 is connected to the upper end of the transport slope 9.

The above-described structure is a known vibration-type spiral vertical transport machine that combines a drive unit such as a vibration motor 7 and a trough such as a vertical spiral transport slope 9 to vertically transport a conveyed object such as dust by vibration. The configuration is the same as that described above.

In this embodiment, a large number of hot air outlets 12 for blowing hot air onto the conveying slope 9 are spirally formed in the peripheral wall of the inner cylinder 8 at predetermined intervals in the circumferential direction. A hot-air blower pipe 13 serving as hot-air supply means for sending hot air to the hot-air outlet 12 through the internal space of the inner cylindrical body 8 is connected to the communication hole 5 a of the support plate 5.

In the illustrated example, the distance between the hot air outlets 12 gradually increases from the third round (third step) of the conveying slope 9 to the upper side of the conveying slope 9, but gradually increases from the lower side to the upper side. The interval may be the same (from the first lap to the last lap).

An exhaust pipe 14 is communicatively connected to the communication hole 4a of the cover 4.

With this configuration, the vibration motor 7
The casing 3 vibrates due to the activation of the casing 3.
The conveyance slope 9 rotates and vibrates with the vibration (for example, frequency: about 750 vpm, total amplitude: 8 m on the outer peripheral side).
m), and the refuse as the conveyed material input from the inlet duct (refuse input port) 10 sequentially rises (conveys vertically) on the conveying slope 9 while performing a behavior such as inversion and the like, and is discharged vertically (conveyed). ) 11.

At the same time, hot air supplied from a hot air supply source (not shown) into the inner cylindrical body 8 through the hot air blowing pipe 13 is blown out onto the transport slope 9 from the hot air outlets 12, and dust on the transport slope 9 is removed. The dust flows in the upward direction on the conveying slope 9 while being dried while being in contact with and is discharged from the exhaust pipe 14.

At this time, the refuse is dried while being stirred by vibration in the closed casing 3, so that the refuse is efficiently dried.

Further, since the refuse is conveyed in the sealed casing 3, the refuse is not spilled out even if the hot air is blown, so that the cleaning work and the like are very easy, and the odor of the refuse is removed. Leakage can be greatly reduced.

Further, since the refuse is vertically conveyed by vibration, the installation space is very small while securing the drying distance and time, and the sliding and rotating parts are very small, so that seizure and abrasion may occur. Almost no failure occurs, and maintenance is easy.

In the present embodiment, the hot air outlet 12
Is gradually increased in each circumference (stage) as the distance from the third circumference (third stage) of the conveying slope 9 increases, and the amount of hot air supplied is suppressed. It is possible to prevent the flow of the hot air from increasing and the flow of the hot air from slowing down, and the behavior of the dust from decreasing.

[Second Embodiment] FIG. 2 is a sectional view of a drying apparatus according to a second embodiment of the present invention.

The right side of the figure shows an example in which hot air is blown out from a hot air outlet 12 formed in the peripheral wall of the inner cylinder 8 through a hot air blowing pipe 13 → a hot air header pipe 15 → a hot air branch pipe 16. An example is shown on the left side of the drawing in which the air is blown upward from a hot air outlet 12 (not shown) formed in the bottom wall of the conveying slope 9 through the blower pipe 13 → the hot air header pipe 15 → the hot air branch pipe 16 → the hot air nozzle 17. Thus, the same operation and effect as those of the first embodiment can be obtained.

Further, when the hot air is blown upward from a hot air outlet 12 (not shown) formed in the bottom wall of the conveying slope 9 through the hot air nozzle 17, the hot air is blown onto the lower surface of the dust over a wide range. This has the advantage that the inversion of dust is promoted and drying is promoted.

It is needless to say that the above two embodiments may be combined into one drying apparatus.

[Third Embodiment] FIG. 3 is a plan view (FIG. 3A) and a cross-sectional view (FIG. 3B) of a main part of a drying apparatus according to a third embodiment of the present invention, showing a modification. It is a sectional view of (Drawing (c)).

As shown in FIGS. 7A and 7B, the hot air nozzle 17 of the second embodiment is buried in the bottom wall of the transfer slope 9 and directly drilled in the hot air nozzle 17. Since the hot air is blown out from the hot air outlet 12, the same operation and effect as those of the first and second embodiments can be obtained.

In this embodiment, the hot air outlet 12
As shown in FIG. 3C, when the openings are directed in the direction of transporting the dust (the direction of the arrow in the figure), there is an advantage that the drying can be performed while the transport of the dust is promoted.

[Fourth Embodiment] FIG. 4 is a plan view (FIG. 4A) and a sectional view (FIG. 4B) of a main part of a drying apparatus according to a fourth embodiment of the present invention.

This is because of the hot air nozzle 1 in the second embodiment.
7 is attached to the lower surface of the bottom wall of the transport slope 9, and hot air is blown toward the upper surface of the bottom wall of the transport slope 9 from the hot air outlet 12 at the tip of a nozzle pipe 18 extending from the hot air nozzle 17. Thus, the same operation and effect as those of the first and second embodiments can be obtained.

The present invention is not limited to the above embodiments,
It goes without saying that various changes can be made without departing from the spirit of the present invention.

[0033]

According to the drying apparatus of the present invention, a cylindrical casing which is supported so as to be capable of being vibrated and whose upper and lower end surfaces are closed, a vibrating means for vibrating the cylindrical casing, and a vertical stand in the cylindrical casing. The upper and lower end surfaces of the inner cylindrical body are closed, a conveying slope vertically spirally arranged between the inner cylindrical body and the peripheral wall of the cylindrical casing, and a lower end of the conveying slope. Inlet duct, an outlet duct communicating with the upper end of the conveying slope, a number of hot air blowing holes for blowing hot air onto the conveying slope, and hot air supply means for feeding hot air through the inside of the inner cylindrical body to the hot air blowing holes. And an exhaust pipe connected to the upper part of the cylindrical casing, so that the dust can be dried while being agitated and vertically conveyed, the installation space is small, the failure is small, and the drying device with high drying efficiency is provided. In realization That.

Further, since the hot air outlet is opened in the peripheral wall of the inner cylinder, the apparatus can be simplified by effectively utilizing the inner cylinder.

Further, since the hot air outlet is opened on the upper surface of the conveying slope, the hot air hits the lower surface of the refuse, so that the reversion of the refuse is promoted and the drying is promoted.

In addition, since the hot air outlet is opened at a position where hot air is blown toward the upper surface of the conveying slope, a degree of freedom of arrangement of the hot air outlet and the like can be obtained.

In addition, the hot air blow-out holes are opened in the transport direction, so that the drying can be performed while promoting the transport of dust.

[Brief description of the drawings]

FIG. 1 is a sectional view (FIG. 1A) and a plan view (FIG. 1B) of a drying apparatus according to a first embodiment of the present invention.

FIG. 2 is a sectional view of a drying apparatus according to a second embodiment of the present invention.

FIG. 3 is a plan view of a main part (FIG. 3A), a cross-sectional view of a main part (FIG. 3B), and a modified example (FIG. 3C) of a drying apparatus according to a third embodiment of the present invention. It is sectional drawing.

FIGS. 4A and 4B are a main part plan view (FIG. 4A) and a main part sectional view (FIG. 4B) of a drying apparatus according to a fourth embodiment of the present invention.

FIG. 5 is a cross-sectional view of each of different conventional drying apparatuses.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stand 2 Compression coil spring 3 Casing 4 Cover 5 Support plate 7 Vibration motor 8 Inner cylinder 9 Conveying slope 10 Garbage inlet 11 Garbage outlet 12 Hot air outlet 13 Hot air blower pipe 14 Exhaust pipe

Claims (5)

[Claims] 1. A cylindrical casing which is supported so as to be able to vibrate and has upper and lower ends closed, a vibrating means for vibrating the cylindrical casing, and upper and lower ends both closed in the cylindrical casing. An inner cylindrical body, a conveying slope disposed spirally in the vertical direction between peripheral walls of the inner cylindrical body and the cylindrical casing, an inlet duct communicating with a lower end of the conveying slope, An outlet duct communicating with the upper end, a number of hot air outlets for blowing hot air onto the conveying slope, hot air supply means for feeding hot air through the inside of the inner cylindrical body to the hot air outlet, and an upper portion of the cylindrical casing. A drying device, comprising: an exhaust pipe for communication. 2. The drying device according to claim 1, wherein the hot air outlet is opened in a peripheral wall of the inner cylindrical body. 3. The drying apparatus according to claim 1, wherein the hot-air outlet is opened on an upper surface of a conveying slope. 4. The drying apparatus according to claim 1, wherein the hot air outlet is opened at a position where hot air is blown toward the upper surface of the transport slope. 5. The drying apparatus according to claim 1, wherein the hot air outlet is opened in a conveying direction.