JPH03192020A - Mounting structure of elastic sheet for attachment removing device - Google Patents

Abstract

PURPOSE:To improve durability of a sheet, in a mounting structure for particle flow-down guide or the like, by turning up the end of an elastic sheet body in a female screw member provided at an inner wall surface, so that it is pressed and held by a press member to be secured with a female screw. CONSTITUTION:A spacer 2 whose sectional shape is approximately hook-shaped is mounted at the inner surface of a side wall plate 1 in a flow-down guide means to weld a female screw member 3 or take a similar step, fixing it completely. The end of the main part 4a of an elastic sheet 4 is turned up to form a turn-up end 4b, and with the main part 4a piled, it is pressed against the female thread member 3 to be held by a press member 5, and is secured by a male screw member 6 at the spacer 2 together with the press member 5.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a storage container for powder and granular material that may contain lumps, a means for guiding the powder and granular material into the storage container, and a means for guiding the powder and granular material to flow down from the storage container. Applied to guide means etc.
The present invention relates to a deposit removing device for removing deposits and agglomerated deposits from the inner wall surfaces of these devices, and (1) relates to a mounting structure for increasing the durability of an elastic sheet for the deposit removing device.

(Prior Art) As a conventional deposit removing device of this type, for example, there is one previously proposed by the applicant in Japanese Patent Application Laid-open No. 81322/1983.

This consists of a cylindrical body having an input port at the top, a funnel-shaped body provided at the bottom of the cylindrical body and having a discharge port at the bottom, and an upper part of the cylinder so that the center part can be moved and deformed or expanded and contracted. According to this deposit removal device, the deposit removing device includes a cylindrical body whose lower part is locked to a funnel-shaped body and an elastic covering provided inside the funnel-shaped body. It is claimed that the matter adhering to the covering can be effectively dropped by the elastic deformation of the covering based on the supply of air to an air bag provided on the back side of the covering.

(Problem to be Solved by the Invention) By the way, as illustrated in FIG. 4, the elastic sheet mounting structure in the prior art is such that the female threaded member a is directly attached to the inner wall surface of the cylindrical body and the funnel-shaped body by welding or other means. Then, with the elastic sheet b stretched over the female threaded member, the peripheral end of the elastic sheet b is attached to the pressing member d by the male threaded member C screwed onto the female threaded member a.
In this mounting structure, the air bag e is attached to the elastic sheet b in order to deform the elastic sheet b in the direction of separating it from the inner wall surface.
By filling pressurized air into the elastic sheet (b), the elastic sheet (b) reinforced by a canvas or other reinforcing layer receives a tensile force, and the tensile force (in other words, the amount of deformation of the elastic sheet) increases the amount of material deposited on the elastic sheet (b). The greater the adhesive force of the elastic sheet b, the greater the need to increase it, and most of the tensile force acting on the elastic sheet b is supported by the male threaded member penetrating portion in the -heavy state at its peripheral end portion. Therefore, due to repeated elastic deformation of the elastic sheet b, there was a problem in that the peripheral end portion of the elastic sheet, particularly the male threaded member penetration portion, was broken relatively early.

The present invention advantageously solves the problems of the prior art, and provides a mounting structure for an elastic sheet for a deposit removal device that can prevent damage to the peripheral edge portion of the elastic sheet for a long period of time. be.

(Means for Solving the Problems) The present invention has a peripheral end portion fixed to the inner wall surface of a storage means or a downward guide means for powder and granular material, and has two positions: a position in contact with the inner wall surface and a position away from the inner wall surface. In the mounting structure for an elastic sheet for a deposit removal device that is deformed between The main body portion of the sheet and the folded end portion thereof are sandwiched, leaving the folding boundary between the two portions, and a male threaded member that passes through each of the pressing member and the elastic sheet is screwed into the female threaded member. It is.

(Function) With this mounting structure, pressurized air is supplied to the air bag interposed between the inner wall surface and the elastic sheet to deform the elastic sheet, thereby removing deposits from the elastic sheet. As mentioned in the technique, it can be dropped effectively.

By the way, when the elastic sheet is elastically deformed in this way, even with this mounting structure, the tensile force acting on the elastic sheet is mainly caused by the male threaded member and the peripheral end portion of the elastic sheet through which it passes. However, with this mounting structure, damage to the peripheral end portion, or in other words, the inward retraction of the peripheral end portion, will be supported by the main body portion of the elastic sheet and its folded back. This is advantageously prevented by the pull-in resistance of the bending boundary with the end section between the internal thread element and the pressure element, which means that the rod-shaped, tubular-shaped This becomes especially noticeable when a rigid member such as the like is inserted.

Thus, according to the present invention, sufficient durability can be exhibited against repeated deformation of the elastic sheet.

(Example) Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, in which an elastic sheet is attached to the inner wall surface of a downstream guide means such as a hopper or a chute.

In this example, a spacer 2 having a substantially hook-shaped cross section is attached to the inner surface of the side wall plate 1 of the downstream guide means, and
When the female threaded member 3 is fixed or fixed to the upper part of the spacer 2 by welding or other means, the main body portion 4a of the elastic sheet 4 and the folded end portion 4b thereof are overlapped on top of the female threaded member. By further arranging the pressing member 5 on this elastic sheet, the elastic sheet main body portion 4a and its folded end portion 4b are connected between the female threaded member 3 and the pressing member 5, and both portions 4a, 4b are The bending boundary portion 4C is left in place, and the male threaded member 6, which is passed through each of the pressing member 5 and the elastic sheet 4, is screwed into the female threaded member 3.

According to this, the elastic sheet main body portion 4a and the folded end portion 4b are sufficiently firmly clamped between the female screw member 3 and the pressing member 5.

Here, preferably, an appropriate rigid member 7 is inserted inside the bending boundary portion 4c, and even more preferably, the elastic sheet main body portion 4a and its folded portion are inserted inside the female threaded member 3 and the pressing member 5. The end portion 4b is integrated with the end portion 4b by gluing, sewing, or the like.

In such a mounting structure, when the elastic sheet 4 is caused to undergo elastic deformation due to the expansion of the air bag 8, a tensile force acts on the main body portion 4a in the direction shown by the arrow in the figure, and this tensile force is applied to the main body portion 4a. The force is mainly supported by the male threaded member 6 and the main body portion 4a located on the outer side of the male threaded member 6, and the force is mainly supported by the male threaded member 6 and the main body portion 4a located on the outer side of the male threaded member 6. lateral retraction is extremely effectively prevented by the bending boundary portion 4C coming into contact with the female screw member 3 and the pressing member 5.

Therefore, the peripheral end portion of the elastic sheet 4 can exhibit excellent durability, especially due to the presence of the bending boundary portion 4c.

Here, by inserting the rigid member 7 as described above into the bending boundary 4C, the bending boundary 4C is
When the deformation of the elastic sheet c is reliably prevented, the retraction displacement of the main body portion 4a can be more effectively prevented, and when the elastic sheet main body portion 4a and its folded end portion 4b are integrated, is the tensile force acting on the elastic sheet 4,
It can be supported not only by the body part 4a but also by the folded end part 4b, both of which
The durability of the elastic sheet 4 can be further improved.

FIG. 2 is a sectional view taken along the line ■-■ in FIG. The one shown in a) has substantially the same mounting structure as the one shown in FIG. 1, except that the spacer 2 is shaped like a channel. The one shown in is the pressing member 5
In order to prevent wear of the male threaded member 6, the free end portion of the folded end portion 4b covers them, and the end portion is screwed to the spacer 2. , can bring about the same effects as those described above.

Further, in FIG. 3, a rigid collar 11 is provided at the male threaded member penetrating portion of the main body portion 4a of the elastic sheet 4 and its folded end portion 4b. According to this mounting structure, the main body portion 4a is The tensile force that acts on the rigid collar 1
1, and a part of the tensile force is also dispersed to the folded end portion 4b by the rigid collar 11, so that the durability of the elastic sheet 4 can be improved more effectively. can be improved.

(Effects of the Invention) Thus, according to the present invention, in particular, the main body portion of the elastic sheet, the folded end portion thereof, and the are sandwiched, leaving the bending boundary between the two parts, and by screwing the male threaded member that penetrates through the pressing member and the elastic sheet into the female threaded member, the female threaded member and the pressing member at the bending boundary are screwed together. The durability of the elastic sheet can be greatly improved based on the resistance to drawing between the elastic sheet and the member.

[Brief explanation of drawings]

Figures 1 and 2 are a vertical cross-sectional view and a cross-sectional view, respectively, showing an embodiment of the present invention. Figure 3 is a cross-sectional view showing another embodiment of the present invention. Figure 4 is a cross-sectional view showing a conventional example. It is a diagram. 1... Side wall plate 2... Spacer 3...
Female thread member 4...Elastic sheet 4a...Body portion 4b...Folded end portion 4c...Bending boundary portion 5...Press member 6...Male thread member 0

Claims (1)

[Scope of Claims] 1. The peripheral end portion is fixed to the inner wall surface of the powder/granular material storage means or the flow guide means, and a posture in which the peripheral end portion is in contact with the inner wall surface;
A mounting structure for an elastic sheet for a deposit removal device that is deformed between a position separated from an inner wall surface and a female thread member mounted directly or indirectly on the inner wall surface, and a female thread member mounted on the female thread member. The main body portion of the elastic sheet and the folded end portion thereof are sandwiched between the pressed member and the bent end portion of the elastic sheet, leaving the bending boundary between the two portions, and a male threaded member is inserted through each of the pressing member and the elastic sheet. A mounting structure for an elastic sheet for a deposit removing device, which is screwed onto the female threaded member.