JPH03192019A - Mounting structure of elastic sheet for attachment removing device - Google Patents

Abstract

PURPOSE:To improve durability of a sheet and reduce air pressure, in the mounting structure for particle storage container or the like, by forming the slack in an elastic sheet for attachment removal through spacers between the spacers in the inner wall surface of a container or the like, and arranging it so that it can be displaced freely between a wall surface contact posture and a separate posture from the wall surface. CONSTITUTION:To the inner wall surface of a side wall plate 2 provided with the inward flanges 1 of a container or the like, both the end parts of an elastic sheet 3 are attached through a spacers 4, whereas the length of the elastic sheet 3 between the spacers 4 is set longer than the interval of the spacers 4. An air bag 8 is provided between the elastic sheet 3 and the side wall plate 2 and is connected to an air charging and discharging port. With this constitution, the air bag 8 is expanded and contracted by charging and discharging air to/from the air bag 8 to make the elastic sheet 3 have a displacement between a contact posture and a separate posture with/from the side wall plate 2, thus removing attachment.

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.
Regarding the deposit removal device that removes deposits and agglomerated deposits from those inner wall surfaces, in particular, a mounting structure that increases the durability of the elastic sheet of the deposit removal device and facilitates displacement and deformation of the elastic sheet. It is related to.

(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 elastic deformation of the covering based on the supply of air to an air bag provided on the back side of the covering.

(Problems to be Solved by the Invention) By the way, as illustrated in FIG. 4, the elastic sheet mounting structure according to the prior art has an internally threaded member a attached to the inner wall surface of the cylindrical body and the funnel-shaped body by welding or other means. installation,
Then, with the elastic sheath b stretched over the female threaded member without slack, the elastic sheath b is pushed onto the female threaded member via the pressing member d by the male threaded member C screwed onto the female threaded member a. In this mounting structure, the elastic sheet b is reinforced with canvas or other reinforcing layer by filling the air bag e with pressurized air in order to deform the elastic sheet b in a direction away from the inner wall surface. The elastic sheet b that has been deformed is immediately subjected to a tensile force from the start of its deformation, and the tensile force, in other words, the amount of deformation of the elastic sheet, can be increased as the adhesion force of the deposit to the elastic sheet b is larger. Since the elastic sheet is needed, there is a problem that the elastic sheet easily breaks from its attachment point, and that permanent deformation tends to remain in the elastic sheet. There was a problem in that it became necessary to increase the air pressure to 2 to 3 kg/cm'', resulting in an increase in the size of the air supply system.

The present invention advantageously solves the problems of the prior art, and can increase the durability of the elastic sheet and sufficiently reduce the pressure of the air supplied thereto.
The present invention provides a mounting structure for an elastic sheet for a deposit removal device.

(Means for Solving the Problems) In the mounting structure of the elastic sheet for a deposit removing device of the present invention, the peripheral end portion is fixed to the inner wall surface of the powder storage means or the falling guide means, and The elastic sheet for the deposit removal device, which is displaced or deformed between the contact position and the separation position from the inner wall surface, is fixed to the inner wall surface via a spacer of a predetermined height, and the elastic sheet between the spacers is Make the sheet length longer than the spacer spacing, e.g.
The length of the elastic sheet is such that even if the elastic sheet is separated from the inner wall surface by about twice the height of the spacer, the amount of elongation of the elastic sheet is zero.

(Function) According to this mounting structure, the elastic sheet has sufficient slack between the spacers, and even if the elastic sheet is separated from the inner wall surface by about twice the height of the spacer, the elastic sheet still Since it only displaces and does not undergo elastic deformation, the tensile force acting on the elastic sheet can be made sufficiently small, and at the same time, the pressure supplied to the air bag to cause the elastic sheet to be displaced can also be reduced. It can be made small enough.

By the way, with this elastic sheet, even when it is elastically deformed to about four times the spacer height, the supply internal pressure can be set to, for example, 0.5 to 1.0 kg/cm. It is possible to downsize the air supply system, and the elongation rate of the elastic sheet can be reduced to 2, which is the allowable elongation rate.
%.

Therefore, by displacing or deforming the elastic sheet between a posture in which it is in contact with the inner wall surface and a desired separation posture from the inner wall surface, it is possible to very effectively drop the deposits on the elastic sheet. Of course, even if the amount of displacement and deformation of the elastic sheet is increased, the tensile force acting on the elastic sheet and the air pressure supplied to the air bag can be advantageously reduced, increasing the durability of the elastic sheet. Moreover, the air supply=5 yarn supply can be downsized, and the time required for deforming the elastic sheet can be shortened.

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

FIG. 1 is a sectional view showing one embodiment of the present invention, and this is a sectional view of one of the side wall plates of a hopper as shown in FIG. 2(b) in plan view. In the front view as shown in FIG.

Here, a side wall plate 2 having inward flanges 1 at both ends
When fixing the peripheral end portion of the elastic sheet 3 to the inner wall surface of the elastic sheet 3, a spacer 4 having a desired height and having a hollow channel shape is provided on the inner wall surface at a position adjacent to the inward flange l.
At the point where the female threaded member 5 is attached to the outer surface of the web of the spacer 4 by welding or other means, the elastic sheet 3 is
The pressing member 6 is placed on both male screw members with sufficient slack between them, and the pressing member 6 is further placed on the elastic sheet. The male threaded member 7 is tightened into the female threaded member 5 through the through holes provided in the respective parts.

According to this, the elastic sheet 3 is sufficiently firmly clamped at both end portions between the female screw member 5 and the presser member 6, with the amount of slack depending on the distance between the spacers 40, etc. The displacement and deformation of the elastic sheet 3 is carried out by an air bag 8 which is arranged in advance between the inner wall surface of the side wall plate 2 and the elastic sheet 3 at a required position of the side wall plate 2 and is connected to a supply/discharge port (not shown). become.

Here, the height of the spacer 4 can also be determined based on the distance between the two spacers 40, the required distance of the elastic sheet 3 from the inner wall surface of the side wall plate, and the like.

For such a mounting structure, for example, the height of the spacer 4 is 100 am, and the spacer interval is 1500 mm.

When the slack amount of the elastic sheet 3 ((elastic sheet length between spacers) - (spacer interval)) is set to 200 mm, the air bag 8 Even if the elastic sheet 3 is separated from the inner wall surface of the side wall plate by approximately twice the height a of the spacer 4 as shown in FIG. 3(a), the elastic sheet 3 does not elongate, In other words, the elastic deformation becomes zero, and therefore the pressure required to displace the elastic sheet 3 in this way is ! However, +9 is extremely small, about 0.2 to 0.3 kg/cm2.

Therefore, the elastic sheet 3 can be displaced up to this point quickly under a small supply internal pressure.

By the way, if even after displacing the elastic sheet 3 in this way, the deposits still cannot be sufficiently removed, it is necessary to further inflate the air bag 8 and elastically stretch the elastic sheet 3. Even if it is elastically deformed to about four times the spacer height a, as shown in FIG. It is smaller than the elongation rate of 2%, and
The internal pressure for filling the air bag 8 is 0.5 to 1.0 kg/cI1
It becomes a small value of about 12.

Thus, according to this mounting structure, even if the elastic sheet 3 is greatly deformed, the bow tension acting on it can be reduced, and the durability of the elastic sheet can be sufficiently improved, and the air bag 8 can be By reducing the required internal pressure, the air supply system, especially the air pressurizing means, can be sufficiently miniaturized.

Moreover, here, since no tensile force is applied to the elastic sheet 3 until the elastic sheet 3 has been displaced by a certain amount, the elastic sheet 30 can be displaced and deformed by a predetermined amount extremely quickly.

Although the present invention has been described above for the case where it is applied to a hopper, the present invention can also be applied to cases where the elastic sheet is attached to the inner wall surface of the storage capacity, or when it is attached across the storage capacity and the hopper. , and in the illustrated example, “
The cross-sectional shape of the U-shaped spacer is adjusted to r
It can also be in the shape of an L, a J-shape, an "H"-shape, or other shapes.

(Effects of the Invention) As is clear from the above description, according to the present invention, the tensile force acting on the elastic sheet can be advantageously reduced and the durability of the elastic sheet can be greatly improved. In addition, the air supply system can be sufficiently downsized by lowering the supply pressure to the air bag.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of the invention, and FIG. 2 is a sectional view showing an embodiment of the invention.
FIG. 3 is a sectional view showing the displacement and deformation state of the elastic sheet, and FIG. 4 is a sectional view showing a conventional example. 2... Side wall plate 3... Elastic sheet 4...
・Spacer 5... Female thread member 6... Pressing member 7... Male thread member 8... Air bag 0 H-]

Claims (1)

[Claims] 1. The peripheral end portion is fixed to the inner wall surface of the powder or granular material storage means or the flow guide means, and a posture of contacting the inner wall surface;
The elastic sheet for the deposit removal device, which is displaced or deformed between the separation position from the inner wall surface, is fixed to the inner wall surface via a spacer of a predetermined height, and the length of the elastic sheet between the spacers is A mounting structure for an elastic sheet for a deposit removal device that is longer than the spacer interval.