JPH0461235B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is suitable for transporting fluids such as slurry and various powdery materials that are likely to wear the inner wall surface of the hose significantly during transportation, and is easy to manufacture and manage inventory. The purpose is to provide a wear-resistant hose that can be easily obtained in any length as required.

A wear-resistant hose according to the present invention devised to achieve the above object consists of a plurality of cylindrical blocks each having a plurality of ceramic plates fixed to each other in close contact with each other over the entire inner peripheral surface of an elastic rubber cylinder. It is characterized by arranging the cylindrical blocks in a concentric manner, and wrapping rubber and a band around the outer periphery of the cylindrical block groups arranged in parallel so that each cylindrical block group is fixed and integrated.
The following effects were achieved.

In other words, conventional wear-resistant hoses have poor wear resistance because they only use wear-resistant rubber for the inner layer, and on the other hand, it is almost impossible to attach a ceramic plate to the inner surface of the hose. Therefore, a method of bending a ceramic plate or a pre-vulcanized rubber plate with small pieces pasted onto its surface into a cylindrical shape, wrapping the pre-vulcanized rubber and a belt-like material such as canvas over the outer circumference, and then vulcanizing it is considered. There are problems in that production efficiency is poor, and when hoses of various lengths are prepared depending on the use, purpose, etc., production costs become extremely high and a large amount of economic loss is forced on inventory management.

However, the wear-resistant hose according to the present invention uses a cylindrical block having the above-described structure with a relatively short axis length, and an appropriate number of blocks are arranged concentrically in accordance with the use and purpose, and the outer periphery of the cylindrical block is To easily produce a hose of any length and having excellent internal abrasion resistance and durability by wrapping unvulcanized rubber and reinforcing strips such as canvas and vulcanizing the hose. I can do it. Therefore, by mass producing the blocks, hoses of arbitrary length can be obtained according to various uses and purposes, and production costs for hoses can be significantly reduced. It is very economical to handle, manage inventory and transport, and has solved the problems associated with conventional hoses.

An embodiment of the present invention will be described below in detail with reference to the drawings. In FIGS. 1 and 2, 3 is a cylindrical block, which has a plurality of ceramic plates 2 in close contact with each other in the circumferential direction on the entire inner peripheral surface of a synthetic elastic rubber cylinder 1 such as neoprene rubber. One end in the axial direction of the second group of ceramic plates slightly protrudes from one end of the rubber cylinder 1, and is baked and fixed in such a state that a concave portion 3A and a convex portion 3B for fitting and connecting the blocks are formed at each end in the axial direction. It was constructed as follows. In addition, the ceramic plate 2 is
A plurality of rows may be arranged not only in the circumferential direction but also in the axial direction. This cylindrical block 3 is manufactured in a mass production system by wrapping an unvulcanized rubber plate with the ceramic plate 2 attached to the surface thereof, winding it around a core metal to form a cylinder, and vulcanizing it in a press mold. .

An arbitrary number of the cylindrical blocks 3 having the above structure are arranged concentrically in a state in which the recesses 3A and the protrusions 3B are fitted into each other, and bonded appropriately to the entire outer circumferential surface of the group of 3 juxtaposed cylindrical blocks. The tube is formed by polymerizing and winding unvulcanized rubber and a band 4 such as canvas as shown in FIG. 3 while applying an agent, solvent, rubber glue, etc., and then vulcanizing the unvulcanized rubber. Three groups of shaped blocks are fixed and integrated by a cylindrical band 4 and a rubber layer 5 to form a wear-resistant hose whose entire inner surface is lined with ceramic.

Note that the cylindrical block is not limited to a round shape, but may be a square shape.

[Brief explanation of the drawing]

Figure 1 is a front view of the cylindrical block, Figure 2 is the front view of the cylindrical block.
FIG. 3 is a partially cutaway side view of the completed hose. 1 is an elastic rubber cylinder, 2 is a ceramic plate,
3 is a cylindrical block, 4 is a strip, and 5 is a rubber layer.

Claims (1)

[Claims] 1. A plurality of cylindrical blocks made of a plurality of ceramic plates fixed in close contact with each other are arranged concentrically on the entire inner peripheral surface of an elastic rubber cylinder, and the outer periphery of the group of cylindrical blocks arranged in parallel is A wear-resistant hose characterized by having each group of cylindrical blocks fixed and integrated by winding rubber and a band-shaped body.