JP2005249178A - Opening and closing damper device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem in replacing an elastic seat ring on a peripheral edge seat part of a storage container opening part, which is very troublesome and takes a long time as it is done by joining by screwing and dissociation of a pressing plate and an L-shaped mold, and a problem that a service life of the elastic seat ring is remarkably shortened as a metallic circular projecting part formed on a peripheral edge seal part of an opening and closing damper is strongly brought into contact with the elastic seat ring at every opening and closing motion. <P>SOLUTION: In this opening and closing damper device for the opening part of the storage container, a recessed fitting groove body is formed on the peripheral edge seat part of the opening part, the elastic seat ring having a head peripheral face as a pressure contact seat and jaws mounted in stages on both side peripheral face parts in a state of being inclined forward in the fitting direction, is fitted in the recessed fitting groove body, a divergent recessed fitting groove body is formed on the peripheral edge seal part of the opening and closing damper, and an elastic seal ring composed of a pointed part as a contact pressure part with which the elastic seat ring is closely kept into contact to be seated, and a base part composed of an O-ring to be fitted to the divergent fitting groove body, is fitted into the divergent recessed fitting groove. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

TECHNICAL FIELD OF THE INVENTION

  The present invention relates to an open / close damper device for a double opening or the like that discharges dust at any time during operation from a dust container such as a cyclone dust collector.

  Each open / close damper device, such as for a double opening that discharges dust from a dust container such as a cyclone dust collector at any time during operation, can press and separate the peripheral edge seat of the storage container opening and the seal peripheral part Open / close damper and an open / close drive arm connecting the tip and the central part of the open / close damper, and the peripheral seat portion of the opening of the receiving container is provided with an L-shaped support member on the peripheral surface of the head. An elastic receiving ring is attached as a pressure contact seat, and the holding plate is screwed and joined to a support member having an L-shaped cross section to strongly hold the elastic receiving ring. A metal ring-shaped protrusion formed so as to be press-contactable to the pressure contact seat of the elastic seat ring is installed, and the connecting portion between the central portion of the open / close damper and the open / close drive arm is a ball joint type and the open / close damper is connected to the neck. Support freely It was those.

The conventional open / close damper device described above has the following problems.
The replacement of the elastic seating ring at the peripheral seating portion of the container opening was extremely complicated and time-consuming, which had to be done by screwing and disengaging the holding plate and the L-shaped cross section. .
The metal annular protrusion provided on the peripheral seal portion of the opening / closing damper strongly hits the elastic seating ring every time the opening / closing operation was performed, thereby significantly shortening the life of the elastic seating ring.
The joint between the center of the open / close damper and the tip of the open / close drive arm is a ball joint system that supports the open / close damper so that it can swing freely in either direction. Because the open / close damper swings and tilts in an irregular direction, the process of pressure welding between the annular projection and the elastic seating ring shifts from constant local contact to full pressure welding with large sliding. Done. As a result, wear of the annular protrusion and the elastic seat ring is large and non-uniform, so that the sealing effect is lost at an early stage and the replacement is unavoidable.

The present invention has been made to solve the above-mentioned problems, and the features thereof are as follows (1) and (2).
(1) In the opening / closing damper device for the opening of the storage container, a recessed fitting groove is provided in the peripheral seat portion of the opening, the head circumferential surface is a pressure contact seat, and the both circumferential surfaces are moved forward in the fitting direction. An elastic seat ring having an inclined jaw arranged in a step shape is fitted into the concave fitting groove body, a divergent concave fitting groove body is provided at the peripheral seal portion of the opening / closing damper, and the base portion comprising a pointed head and a base portion is provided. An O-ring for fitting into the divergent concave fitting groove body and an elastic seal ring having a pointed head as a pressure-contacting portion for the pressure-contacting seat of the elastic receiving ring are fitted into the divergent concave fitting groove. Opening and closing damper device characterized.
(2) In the opening / closing damper device for the opening portion of the storage container, a concave fitting groove is provided in the peripheral seat portion of the opening portion, the head circumferential surface is the pressure contact seat, and the both circumferential surfaces are arranged in the front direction. An elastic seat ring having an inclined jaw arranged in a step shape is fitted into the concave fitting groove body, a divergent concave fitting groove body is provided at the peripheral seal portion of the opening / closing damper, and the base portion comprising a pointed head and a base portion is provided. An elastic seal ring having an O-ring for fitting into the divergent concave fitting groove body and having a pointed portion as a pressure contact portion for a pressure contact seat of the elastic seating ring is fitted into the divergent concave fitting groove, and is axially A pivot that is perpendicular to the pivoting direction of the opening and closing arm and that has a drum-shaped peripheral surface is provided at the pivot connecting portion between the center of the opening and closing damper and the tip of the opening and closing arm to support the opening and closing damper freely Opening and closing damper device characterized by being connected.

  According to the present invention, the elastic seat ring and the elastic seal ring can be easily fitted and removed at the time of replacement, and there is no escape during operation. Further, since the elastic seal ring has a two-stage structure, it is possible to greatly extend the life of the elastic seat ring and the elastic seal ring by buffering the shock at the time of opening / closing and pressing and separating. In addition, the basic movement of the opening / closing damper is firmly held by the pivot, and the swing in the direction perpendicular to the pivoting direction can be minimized with the drum-shaped peripheral surface of the pivot. The shock-absorbing effect of the elastic seating ring and elastic seal ring in the pressure welding / separation process is enhanced, and the sliding amount at the transition to the whole surface pressure welding is minimized to greatly reduce the wear of each ring, thereby stabilizing the sealing effect for a long time. It exhibits excellent effects such as maintaining and extending its life to a longer period.

The best mode for carrying out the present invention is as follows.
The recessed fitting groove body is inserted into the peripheral edge seat portion of the opening portion, and is fitted with at least the peripheral area of the elastic seat ring with the widths of the bottom surface and the open surface being substantially equal.
The elastic seat ring is made of rubber and the head circumference is a pressure-contacting seat, and the jaw-shaped resistance part that is inclined forward in the fitting direction on both sides is circumferentially arranged in multiple steps. However, it is very easy to fit into the concave fitting groove body, and it is possible to reliably prevent the jaw part from being detached by the action of expanding and deforming the jaw part outside the groove, and to facilitate removal at the time of replacement.
The divergent concave fitting groove provided in the peripheral seal portion of the open / close damper pushes and fits the O-ring portion of the base portion of the elastic seal ring to reliably prevent detachment during normal operation.
The elastic seal ring is made of rubber and has a pointed head and a base, and the base is an O-ring part for fitting into the divergent concave fitting groove, and the pointed head is used for a pressure contact seat of the elastic seating ring. A pressure contact portion, and the O-ring portion is fitted into the divergent recessed groove
The pivot provided at the pivot connecting portion between the lower center portion of the open / close damper and the open / close drive arm tip has an axial direction perpendicular to the rotational direction of the open / close arm and a peripheral surface formed like a drum. It is a stable support connection that can swing freely.

Next, an embodiment of the present invention will be described in detail with reference to FIGS.
The present embodiment is applied to each open / close damper device of a double open / close damper device provided in a valve box 2 below a dust discharge nozzle 1 (dust storage container) below a cyclone type dust collector. The damper device 4 shown as a representative of the lower damper device is omitted because it has substantially the same structure.
In FIG. 1, the opening / closing damper device 4 for the opening of the dust discharge nozzle 1 that can accommodate dust below includes a gasket 41, an opening / closing damper 42, an opening / closing arm 43, and a rotation driving device 45 for the opening / closing arm 43. Is the main component.
The gasket 41 is joined to the opening of the dust discharge nozzle 1 via a rubber sheet 46 at the upper end circumferential surface, and provided with a recessed fitting groove 33 in the lower peripheral edge receiving portion 32, so that the recessed fitting groove 33 can be prevented from coming off. An elastic seat ring 34 made of silicon rubber with (jaw 34b) is fitted into most of the portion except the head periphery 34a.
Although the elastic seat ring 34 is also shown in an enlarged manner in FIG. 2, a jaw 34b having a head circumferential portion 34a as a pressure contact seat and tilted forward in the fitting direction on both circumferential surface portions is provided in a step shape.
The elastic seat ring 34 having the above-described structure facilitates the fitting into the recessed fitting groove 33 by the formation of the jaw 34b, and reliably prevents the groove from being removed from the recessed fitting groove 33 during operation. Further, it is possible to quickly and easily remove the concave fitting groove 33 with the removal preventing claw 33a at the time of replacement.
The open / close damper 42 is provided with a dust containing bucket 51 in the upper center, the lower part is held by an open / close arm 43, a divergent recessed groove 53 is provided in the upper peripheral seal part 52, and an elastic seal ring is provided in the divergent recessed groove 53. 54 is fitted.
Although the elastic seal ring 54 is also enlarged in FIG. 2, the base 54b is formed of a pointed head 54a and a base 54b, and the base 54b is used as an O-ring for fitting into the divergent concave fitting groove 53. The elastic seat ring 34 serves as a pressure contact portion to the head peripheral portion 34a.
The opening / closing arm 43 pivotally connects and holds the projecting arm 55 at the lower central portion of the opening / closing damper 42 at its front, and a support shaft 56 is fixed to the rear, and both end portions of the support shaft 56 are attached to the valve box 2. It is rotatably connected to a bearing 58 provided on the side of a component member (casing) 57.
The support shaft 56 of the open / close arm 43 is fixed to one end of a rotation link shaft 70 at the end, and the other end of the rotation link shaft 70 is attached to be freely swingable up and down. It is pivotally connected to the tip of the piston rod 46.
The pivot connecting portion between the opening / closing arm 43 and the opening / closing damper 42 is also shown in detail in an enlarged manner in FIG. 3, but the both ends of the opening / closing arm 43 and the bearing 59 are pivotally attached to the opening / closing arm 43 and the axial direction of the opening / closing damper 42 is shown. The upper end of the pivot 61 that is perpendicular to the rotation direction and pivotally attached to the drum-shaped bearing 60 of the projecting arm 55 at the lower central portion of the opening / closing damper 42 and the front and rear of the pivot 61 at the front end of the opening / closing arm 43 can enter and exit. It consists of bolt nuts 63 and 64 for adjusting the forward / backward inclination of the open / close damper provided with screws.
In FIG. 3, the pivot 61 is formed in a drum-like shape at the central peripheral surface that is a pivotal attachment portion of the projecting arm 55 with the drum-shaped bearing 60, and the open / close damper is freely connected to support the left and right oscillations in a small range. It is a thing. In the figure, 65 denotes a C-type retaining ring, 66 denotes a collar, 67 denotes a key plate, 68 denotes packing, and 69 denotes a packing presser.

Since the opening / closing damper device of the present invention can obtain the following excellent effects, it can be widely expected to be widely used in industry.
The elastic seat ring that fits into the recessed groove body of the peripheral edge seat portion of the opening and the elastic elastic seal ring that fits into the wide end recessed groove body of the peripheral seal portion of the opening / closing damper are fitted during replacement. Easy to remove and no escape at all during operation. In addition, since the elastic seal ring has a two-stage structure, it was possible to greatly extend the life of the elastic seat ring and the elastic seal ring by buffering the shock at the time of opening / closing and pressing and separating. Furthermore, since the movement in the basic opening / closing rotation direction of the opening / closing damper is firmly held by the connection holding pivot, the swing in the direction perpendicular to the rotation direction can be minimized on the drum-shaped peripheral surface of the pivot, The shock absorbing effect in the pressure welding joining and separation process of the elastic seating ring and elastic seal ring when opening and closing the damper is increased, and the sliding amount at the transition to the whole pressure welding is minimized, and the wear of each ring is greatly reduced to provide a sealing effect It exhibits excellent effects such as stable maintenance over a long period of time and extending its life to a longer period.

BRIEF DESCRIPTION OF THE DRAWINGS It is longitudinal cross-sectional explanatory drawing which shows the whole one Example of this invention apparatus. It is explanatory drawing of the elastic seat ring part and elastic seal ring part which are shown in FIG. FIG. 3 is a detailed enlarged explanatory view of a pivot connecting portion between the open / close arm 43 and the open / close damper shown in FIG. 1.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dust discharge nozzle 2 of a cyclone type dust collector lower part 2 Valve box 4 Damper device 32 Lower end peripheral edge receiving part 33 Recessed groove body 33 Recessed groove body 34 Elastic seat ring 34a Head circumference part 34 Elastic seat ring 34b Jaw 41 Gasket 42 Open / close damper 43 Open / close arm 43 Open / close arm 45 Rotation drive device (hydraulic cylinder device)
46 Rubber sheet 47 Piston rod 51 Dust storage bucket 52 Upper edge peripheral seal portion 53 Wide end recessed groove 54 Elastic seal ring 54a Pointed head 54b Base portion 55 Projecting arm 56 Support shaft 57 Component member (casing)
58 Bearing 59 Double bearing 60 Drum bearing 61 Pivot 61a Drum 62, 63 Bolt nut for tilt adjustment

Claims (2)

  In the opening / closing damper device for the opening of the container, the jaw is provided with a concave fitting groove in the peripheral seat portion of the opening, the head circumferential surface is a pressure contact seat, and the both circumferential surfaces are inclined forward in the fitting direction. An elastic seat ring with a stepped circumference is fitted into the recessed groove, a divergent groove is provided in the peripheral seal part of the opening / closing damper, and a base consisting of a pointed head and a base is fitted into the divergent groove. An elastic seal ring having an O-ring for fitting into the groove body and having a pointed head as a pressure contact portion for a pressure contact seat of the elastic seat ring is fitted into the divergent concave fitting groove. Open / close damper device.   In the opening / closing damper device for the opening of the container, the jaw is provided with a concave fitting groove in the peripheral seat portion of the opening, the head circumferential surface is a pressure contact seat, and the both circumferential surfaces are inclined forward in the fitting direction. An elastic seat ring having a stepped periphery is fitted into the concave fitting groove body, a divergent concave fitting groove body is provided at the peripheral seal portion of the opening / closing damper, and a base portion comprising a pointed portion and a base portion is provided with the divergent concave fitting groove. An O-ring for fitting into the body and an elastic seal ring having a pointed head as a pressure-contacting portion for a pressure-contacting seat of the elastic seating ring are fitted into the divergent concave fitting groove, and the axial direction of the opening / closing arm is The pivot shaft, which is perpendicular to the rotation direction and has a drum-shaped peripheral surface, is provided at the pivot joint between the center of the open / close damper and the tip of the open / close arm, and the open / close damper is supported and connected freely. Opening and closing damper device characterized.

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