JPH09210560A - Sealing material protection structure in rotary dryer - Google Patents

Abstract

(57) [Abstract] [Subject] A sealant protection structure that allows relative rotation between the rotating part and the fixed part in the rotary dryer and further allows relative lateral movement between the two parts. provide. SOLUTION: A rotary dryer having a charging port 3 connected to a charging device via a sealing material 6 on one side surface of a rotating body 1, and a discharging port 4 connected to a discharging device via a sealing material 6 on the other side surface. In the machine, the rotating rings 10 and 11 that rotate are attached to at least one side end of the body 1, and the fixing rings 12 and 13 are attached to either the charging device or the discharging device, and the rotating rings 10 and 11 are fixed to the fixing ring 12. Protective structure for seals in a rotary dryer arranged so as to rotate along 13 and 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seal material protection structure for a rotary dryer used as a chemical device or the like.

[0002]

2. Description of the Related Art Generally, in the field of chemistry and the like, a rotary drier is used to dry a processed product such as a powder or granular material. An example of this rotary dryer is shown in FIG.
The rotating body 1 has one side surface 1a provided with a charging port 3 for connecting to a charging device such as a screw feeder 2, and the other side surface 1b is provided with a discharging port 5 connected to a discharging device such as a discharging hood 4. It In order to prevent leakage of gas supplied or generated inside the body 1, a sealing material 6 such as packing is arranged between the rotating body 1 and the fixed screw feeder 2 or discharge sheet 4. Then, a ring-shaped tire 7a is arranged on the outer periphery of the middle portion of the body 1, and the tire 7a is supported by a roller 7 provided on a support base.
It is designed to drive.

By the way, when this type of rotary dryer becomes particularly large, it becomes difficult to seal the inside of the body 1 by the seal 6. That is, when this rotary dryer becomes large in size, the diameters of the inlet 3 and the outlet 5 become 500 to 2,000 mm, and in such a large diameter portion, the screw feeder 2 and the discharge hood 4, which are fixed structures, It is difficult to uniformly form the intervals in the circumferential direction. On the other hand, the body 1 in the rotary dryer is accompanied by the expansion and contraction action by heat, so that the above-mentioned nonuniformity of the intervals is further increased. As a means for solving such a sealing problem, for example, a method of suspending the screw feeder 4 which is a fixed portion by a spring has been proposed.

[0004]

By the way, in the method of improving the sealing property by the method of suspending the fixing portion as described above, the reaction force of the spring and the reaction force of the flexible connection act to act on the packing as the sealing material. There was a problem that it was heavily worn and lacked in durability.

[0005]

The present invention has been achieved to solve the problems of the seal structure in the conventional rotary dryer, and a seal material is provided on one side of the rotating body. In a rotary dryer having a charging port connected to a charging device and a discharging device connected to a discharging device on the other side through a sealing material, a rotating ring attached to at least one side end of the body, It is intended to provide a seal material protection structure in a rotary dryer in which a fixed ring is attached to either one of the charging device and the discharging device, and the rotary ring is arranged to rotate along the fixed ring.

Further, it is preferably constructed as a so-called ball bearing structure in which a sphere is arranged between the fixed ring and the rotating ring. According to the seal material protection structure in the rotary dryer having such a configuration, even when the screw feeder, which is the fixed portion, is suspended by the spring, the reaction force and the like are held by the rotary ring and the fixed ring. That is, since the bearing structure is formed by the rotating ring and the fixed ring, the distance between the charging port and the discharging port and the charging device and the discharging device, which are the fixed parts, is always constant, and as a result, the action on the sealing material is increased. The force is constant and the durability is improved.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a seal material protecting device in a rotary dryer according to the present invention will be described below with reference to FIGS. In these figures, the same symbols as those in FIG. 4 indicate the same names. A rotating ring 10 is attached to one side surface 1a of the rotating body 1, and a similar rotating ring 11 is attached to the other side surface 1b.
A fixing ring 12 is attached to the outer periphery of the screw feeder 2 that is the fixing portion, and a fixing ring 13 is also attached to the discharge hood 4.

More specifically, the body 1 as shown in FIG.
A ring-shaped first holding body 15 that protects the sealing material 6 and the rotating ring 10 are attached to one side surface 1a of the rotating ring 10 with a bolt 16, and the fixing ring 12 is arranged along the inner circumference of the rotating ring 10. There is. The fixing ring 12 is attached to the casing 2a of the screw feeder 2 which is a fixing portion via a supporting member 17, and a sphere 18 is arranged between the fixing ring 12 and the rotating ring 10 to form a ball bearing mechanism. doing.

Reference numeral 19 denotes a second holding body fixed to the casing 2a side, and a V packing 20 and a ground packing 2 are provided between the first holding body 15 and the second holding body 19.
1 is arranged as a sealing material 6, and packing pressers 21a and 21b are arranged on both sides thereof. On the other hand, as shown in FIG. 3, the rotating ring 11 is attached to the other side surface 1b of the rotating body 1 via the supporting member 23, and the fixed ring 13 is arranged along the inner circumference of the rotating ring 11. Has been done. The fixing ring 13 is attached to the discharge hood 4, which is a fixing portion, via a support member 24.

The fixed ring 13 and the rotary ring 1
A sphere 25 is arranged between the spheres 1 and 1 to form a ball bearing. Reference numeral 26 is a first holder attached to the end of the rotating body 1, and 27 is a second holder attached to the discharge hood 4 via a support member 24. The sealing material 6 including the gland packing 28 and the V packing 29 is arranged between the body 26 and the second holding body 27, and both sides are supported by the packing retainers 30a and 30b.

In the seal material protection structure for the rotary dryer configured as described above, considering the case where the body 1 of the rotary dryer is affected by heat or the like and its axial center changes, the rotary side is considered. Rotating rings 10 and 11 attached to
And the action of the fixing rings 12 and 13 attached to the fixed side, the first holding bodies 15 and 26 and the second holding bodies 19 and 26,
The distance from 27 is always constant, so that no special force acts on the sealing material 6.

[0012]

As is apparent from the above description, according to the seal protection structure in the rotary dryer according to the present invention, the rotary ring attached to the rotating body and the screw feeder or the discharge hood which is the fixed side are attached. Since the special fixing ring prevents the special force from acting on the seal material against the displacement of the body, damage due to wear of the seal material is reduced, and its durability can be improved. There is.

[Brief description of drawings]

FIG. 1 is a schematic side view of a rotary dryer having a sealant protection structure in the rotary dryer according to the present invention.

FIG. 2 is an enlarged view of a portion A in FIG.

FIG. 3 is an enlarged view of a portion B in FIG. 1;

FIG. 4 is a schematic side view of a conventional rotary dryer.

[Explanation of symbols]

1 Body 3 Input Port 2 Screw Feeder 4 Discharge Hood 5 Discharge Port 6 Sealing Material 11,13 Rotating Ring 12,14 Fixing Ring 15,26 1st Holding Body 16 Bolt 17,23,24 Supporting Member 18,25 Sphere 19, 27 Second holder 20, 29 V packing 21, 28 Gland packing 22a, 22b, 30a, 30
b Packing holder

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuji Shioda 3-1-1 Tam, Tamano City, Okayama Prefecture Mitsui Engineering & Shipbuilding Co., Ltd. Tamano Office

Claims (2)

[Claims] 1. A rotary dryer having a charging port connected to a charging device through a sealing material on one side of a rotating body, and a discharging port connected to a discharging device through a sealing material on the other side of the rotary dryer. A rotating ring that rotates is attached to at least one side end of the body, and a fixing ring is attached to either one of the charging device and the discharging device, and the rotating ring is arranged to rotate along the fixing ring. Sealing material protection structure in the characteristic rotary dryer. 2. The seal material protection structure for a rotary dryer according to claim 1, wherein the ball bearing structure has a sphere arranged between a rotary ring and a fixed ring.