JPH0739944U - Anti-adhesion diaphragm for cyclone hopper - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] In the diaphragm laid on the cyclone hopper, the seams do not occur inside the diaphragm, the abrasion of the sewn product is caused, and the two diaphragms whose seams are loosened due to abrasion (EN) Provided is a diaphragm that does not cause troubles such as powder intruding from the space or accumulating on loosened seams. A folding part 81a is formed by folding one end of a plurality of diaphragm pieces 8 outward and in the forward direction with respect to the flow direction of the air flow, and the folding part 81a is formed from the outside to the end of another diaphragm piece 8b. In a non-adhesion-preventing diaphragm for a cyclone hopper, in which several diaphragm pieces sewn with overlapping parts are formed in an inverted truncated cone shape, a folding piece 82a generated by the folding portion 81a and the other diaphragm piece 8b are fixed by sewing. It is characterized by

Description

[Detailed description of the device]

[0001]

[Technical Field of Device]

 The present invention relates to an anti-adhesion diaphragm for a cyclone hopper, and more particularly to a diaphragm used to prevent a powder or the like from adhering to the inner wall of the cyclo hopper to form a bridge.

[0002]

[Prior art]

 Figure 1 is a schematic diagram of a cyclone hopper, which is a cylindrical air flow inlet / outlet 1 and a similarly cylindrical hopper top 2 connected to this inlet / outlet 1, an intermediate portion 3 of an inverted truncated cone and also The lower hopper portion 4 has an inverted truncated cone shape, and the lower hopper portion 4 is provided with a discharge port 5 for discharging the powder P.

The air inflow / outflow part 1 is provided with an airflow introduction part 11 for introducing an airflow along the circumference and an airflow discharge part 12 above the center of the cylinder, and the The structure is such that the powder supply unit 13 is provided at a different position.

Therefore, the air flow F introduced from the air flow introducing unit 11 flows along the cylindrical inner wall of the air inflow / outflow unit 1 and is guided to the upper hopper unit 2 as shown by an arrow, so that it becomes a vortex. And flow down below the hopper. On the other hand, the airflow discharge part 12 has a negative pressure, so that the airflow F flowing down rises along the center part C of the hopper at the lower end of the lower hopper part 4, and the middle part 3 and the upper hopper part 2, Further, the air is discharged from the air flow discharge part 12 through the air inflow / outflow part 1.

Therefore, the powder supplied from the powder supply unit 13 to the air inflow / outflow unit 1 is spirally conveyed to the upper hopper unit 2, the intermediate unit 3, and the lower hopper unit 4 along with the air flow F 1, and the powder is then discharged. It is discharged downward from the discharge unit 5.

However, the powder P tends to adhere to the wall surface, as shown in FIG. 6, particularly in the lower hopper portion 4, which may not constitute a smooth powder flow. In such a case, the powder P adheres to the inner wall surface of the lower hopper portion 4 in a bridge shape, and particularly in a cyclone hopper, a cavity like a rat hole called a rat hole as shown in FIG. 6 is formed, There was a situation in which the discharge of the powder P was obstructed.

[0007]

[Problems solved by the device]

 In order to solve the above situation, as shown in FIG. 7, a rubber diaphragm 6 is laid on the lower hopper portion 4 to prevent the powder P from adhering.

Since such a diaphragm 6 is formed by sewing a plurality of diaphragm pieces 8 each having a rubber layer formed on a base cloth into an inverted truncated cone-shaped diaphragm, the sewn portion 9 is produced. . When the suture thread of the sewn portion 9 and the powder come into contact with each other on the surface of the sewn area, the suture thread is worn and broken, which causes a trouble due to loosening of the suture.

For this reason, a folding part 81a is formed by folding the end of one of the diaphragm pieces 8a to be sewn outward, and the other diaphragm piece 8b is sewn while being overlapped with the outside of the folding part 81a. Has become. The folding portion 81a is formed in the forward direction with respect to the flow direction of the air flow F, as shown in FIG.

As described above, the folding portion 81a is formed in the forward direction of the air flow F, and at the same time, the folding portion 81a is overlapped with the end portion 81b of the other diaphragm piece 8b from the outer side and sewn. As a result, there is an advantage that powder is not deposited on the sewn portion 9 (Japanese Patent Application No. 3-112873).

However, since the sewing thread 10 penetrates the folded-in portion 81a of the diaphragm piece 8a and the diaphragm piece 8b, a seam is formed inside the diaphragm 6, and the powder collides with the seam. However, the sewing thread is worn out and the seam is slackened. However, if it progresses further, the sewn portions of the two diaphragms are torn and the durability is impaired.

The present invention has been made in view of the above problems, and in a diaphragm laid on a cyclone hopper, a seam does not occur inside the diaphragm, wear of a sewn product occurs, and the seam is loosened by the wear. An object of the present invention is to provide a diaphragm that does not cause troubles such as powder invading from between two diaphragms or powder accumulating on loose seams.

[0013]

[Means for solving problems]

 In order to achieve the above-mentioned object, the anti-adhesion diaphragm for a cyclone hopper of the present invention forms a fold portion by folding one end of a plurality of diaphragm pieces outward and in the forward direction with respect to the flow direction of the air flow. In the anti-adhesion diaphragm for a cyclone hopper, in which several diaphragm pieces sewn from the outside with the ends of other diaphragm pieces sewn from the outside to this folded part are formed in an inverted truncated cone shape, the folded piece generated by the folded part and the above It is characterized in that other diaphragm pieces are fixed by sewing.

Further, the anti-adhesion diaphragm for the cyclone hopper according to the present invention is formed by folding one end portion of a plurality of diaphragm pieces outward and in the forward direction with respect to the flow direction of the airflow to form the folding portion. In the anti-adhesion diaphragm for the cyclone hopper, which was formed by stacking several diaphragm pieces from the outside on the folding part from the outside and sewing them together, and forming them in a reverse truncated cone shape, basically it was caused by the folding part. The folding piece and the other diaphragm piece are fixed by sewing, and an adhesive is embedded between the folding portions.

Further, the diaphragm for the cyclone hopper according to the present invention is formed by folding one end of a plurality of diaphragm pieces outward and in the forward direction with respect to the flow direction of the air flow to form a folding portion, and The end of the other diaphragm piece is superposed on the part from the outside, and the folding piece generated by the folding portion, the other diaphragm piece, and part of the other diaphragm piece and the folding portion are pierced and fixed by sewing. An adhesive is embedded between the folds.

According to the present invention, since the folding piece of the folding portion and the other diaphragm are basically sewn and fixed, no seam is generated on the inner surface (the surface where the powder contacts) of the diaphragm. As a result, the powder is prevented from accumulating on the seam, and the powder collides with the suture thread to abrade the thread at the seam, thereby preventing the loosening of the seam, which is an advantage.

The present invention will be described in more detail.

In the diaphragm according to the present invention, since the several diaphragm pieces 8 are formed on the diaphragm 6 having the shape of the inverted truncated cone by sewing as described above, the sewn portion 9 is produced.

In the present invention, as shown in FIG. 2, the sewn portion 9 forms a folded portion 81a obtained by folding the end portion of one diaphragm piece 8a to be sewn to the outside, and the other diaphragm piece 8b is formed as described above. The folding piece 81a is superposed on the outside of the folding portion 81a, and the folding piece 82a generated by the folding portion 81a and the other diaphragm piece 8b are sewn with a sewing thread 10. The folding portion 81a is formed in the forward direction with respect to the flow direction of the air flow F, as shown in FIG.

By sewing the folded piece 82a formed by forming the folded portion 81a and the other diaphragm piece 8b in this manner, no seam is formed on the inner surface of the diaphragm 6.

FIG. 3 is a second device according to the present invention, in which an adhesive agent 83a is embedded between the folding piece 82a and the diaphragm piece 8a. In this case, the adhesive 83a firmly adheres and fixes the folding piece 82a and the diaphragm piece 8a, and the powder contact side of the diaphragm piece 8a of the sewn portion 9 comes into close contact with the folding piece 82a and is sewn. The flattened diaphragm makes powder more difficult to deposit.

FIG. 4 is a partial cross-sectional view of another embodiment of the present invention. In this embodiment, one end 8a of the plurality of diaphragm pieces 8 is placed outside and the flow direction of the air flow is changed. Is folded in the forward direction to form a folded portion 81a, and the end portion of another diaphragm piece 8b is superposed on the folded portion 81a from the outside, and the folded piece 82a generated by the folded portion 81a and the other diaphragm are formed. The piece 8b and a part of the other diaphragm piece 8b and the folded portion 81a are passed through and fixed by sewing, and an adhesive 83a is embedded between the folded portions.

In this case, a part of the sewing thread 10 (2) penetrates from the other diaphragm piece 8b to one diaphragm 8a, but since the adhesive 83a is embedded between the folding portions, the sewing thread 10 (2) is bonded. The suture thread 10- (2) plays the role of temporary fixing until the suture portion of the suture diaphragm is flattened by the solidification of the agent.

FIG. 5 is a cross-sectional view of another embodiment of the present invention. After the adhesive 83a is embedded, the caulking 20 is further used along the stitched portion at an interval of 15 cm to 25 cm for further durability. The property is improved.

[0025]

[Action]

 According to the diaphragm for the cyclone hopper of the present invention, the end of the diaphragm piece is folded outward and in the forward direction with respect to the flow direction of the airflow to form the folded portion, and the outer side of the folded piece generated by this folded portion is formed. By overlapping and sewing the ends of the other diaphragm pieces, the step due to folding is formed in the direction opposite to the air flow direction. Furthermore, since basically no seam is formed on the inner surface of the diaphragm, powder does not accumulate on this seam, and the powder enters the inside of the diaphragm through the sewn part worn by contact with the powder. This has the advantage of improving the durability of the diaphragm. By embedding an adhesive between the folding piece and another diaphragm piece, the stitched portion can be flattened.

[0026]

[Effect of device]

 As described above, in the anti-adhesion diaphragm for the cyclone hopper according to the present invention, the adhesion of powder can be effectively prevented, and the suture thread that sew two diaphragms comes into contact with the powder. It has the effect of improving durability.

[Brief description of drawings]

FIG. 1 is a schematic view of a cyclone hopper.

FIG. 2 is a sectional view of a sewn portion of the diaphragm of the present invention.

FIG. 3 is a sectional view of a sewing portion of the diaphragm of the present invention.

FIG. 4 is a sectional view of a sewing portion of the diaphragm of the present invention.

FIG. 5 is a sectional view of a sewing portion of the diaphragm of the present invention.

FIG. 6 is a cross-sectional view showing how powder is attached to the lower hopper.

FIG. 7 is a cross-sectional view showing a state in which a cyclone hopper is fitted with a dough aflam.

FIG. 8 is a perspective view of a diaphragm.

FIG. 9 is a sectional view of a sewn portion of a conventional diaphragm of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air inflow / outflow part 11 Airflow introduction part 12 Airflow discharge part 13 Powder supply part 2 Upper hopper part 3 Middle part 4 Lower hopper part 5 Powder discharge part 6 Adhesion prevention diaphragm 8 Diaphragm piece 81a Folding part 82a Folding piece 83a Adhesive 9 Sewing part 10 Sewing thread F Air flow P Powder

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenji Hayashi 6-12-8 Ueno, Iwatsuki City, Saitama Prefecture Fujikura Rubber Co., Ltd. Iwatsuki Plant (72) Kazuyuki Kanazawa 6-12-Ueno, Iwatsuki City, Saitama Prefecture 8 Fujikura Rubber Industrial Co., Ltd. Iwatsuki Factory

Claims (3)

[Scope of utility model registration request] 1. A fold portion is formed by folding one end portion of a plurality of diaphragm pieces outward and in a forward direction with respect to a flow direction of an airflow, and at the same time, the fold portion is formed from the outside to the end portions of other diaphragm pieces. In the anti-adhesion diaphragm for a cyclone hopper, which is formed by stacking several sewn diaphragm pieces in an inverted truncated cone shape, the folding piece generated by the folding part and the other diaphragm piece are fixed by sewing. Anti-adhesion diaphragm for cyclone hopper. 2. One of the plurality of diaphragm pieces is folded outwardly and in the forward direction with respect to the flow direction of the air flow to form a folded portion, and the folded portion is formed from the outside to the end portions of the other diaphragm pieces. In an anti-adhesion diaphragm for a cyclone hopper, in which several diaphragm pieces sewn together are sewn in an inverted truncated cone shape, basically, the folding piece generated by the folding part and the other diaphragm piece are fixed by sewing. An adhesion preventive diaphragm for a cyclone hopper, wherein an adhesive is embedded in the folded portion. 3. A diaphragm part is formed by folding one end of a plurality of diaphragm pieces outward and in the forward direction with respect to the flow direction of the air flow, and forming an folded part at the end of the other diaphragm piece from the outside. And the folding piece generated by the folding portion, the other diaphragm piece and part of the other diaphragm piece and the other folding piece and fixed by sewing through the folding portion, and embedding an adhesive in the folding portion. A featured anti-adhesive diaphragm for cyclone hoppers.