Transport hose having wear detection function
A hose and functional technology, applied in hoses, pipes to prevent damage/wear, pipes, etc., can solve problems such as difficult to accurately predict hose replacement time, breakage, hose cracking, etc., to achieve easy identification and confirmation, simple wear degree, the effect of reliable wear degree
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no. 1 approach
[0040] The conveying hose according to the first embodiment of the present invention is used to convey solids such as plastic pellets, such as figure 1 and figure 2As shown, it is constituted by integrating a synthetic resin reinforcing core 2 and a synthetic resin hose wall 1 .
[0041] The hose wall 1 is composed of a colored outer layer 3 with light transmission, a colored inner layer 4 with light transmission, and a colorless middle layer with light transmission between the outer layer 3 and the inner layer 4. 5 are stacked along the radial direction of the hose. The inner and outer peripheral surfaces of the hose wall 1 are formed in a substantially smooth cylindrical shape, the thickness in the radial direction of the hose is made uniform over the entire circumference, and the hose wall 1 is formed in a translucent and colored state over the entire circumference.
[0042] Specifically, the outer layer 3 uses a material whose inner and outer peripheral surfaces are for...
no. 2 approach
[0064] Such as Figure 4As shown, the transportation hose according to the second embodiment of the present invention does not have the intermediate layer 5 in which the reinforcing core 2 is embedded in the hose wall 1 . The hose wall 1 is formed by overlapping and laminating a yellow transparent outer layer 3 and a blue transparent inner layer 4 in the radial direction of the hose. In addition, the thickness of the inner layer 4 in the tube radial direction is set to be 20 to 80% of the thickness of the tube wall 1 in the tube direction. Further, a colorless and transparent reinforcing core 2 is integrally formed on the outer peripheral surface of the outer layer 3 of the hose wall 1 at intervals in the hose axial direction and spirally wound.
[0065] The cross-sectional shape of the reinforcement core 2 in the hose radial direction is a substantially elliptical shape long in the hose radial direction, and the width in the hose axial direction of the inner half thereof gra...
no. 3 approach
[0073] The transportation hose of the third embodiment is as follows: Figure 5 As shown, the outer layer 3 has thick portions 3 a and thin portions 3 b alternately continuous in the hose axial direction, and the inner layer 4 has a substantially constant thickness over substantially the entire length in the hose axial direction. In addition, the cross-sectional shape of the reinforcing core 2 in the hose radial direction is substantially quadrangular.
[0074] The thick-walled portion 3a and the thin-walled portion 3b of the outer layer 3 are continuously formed in a spiral shape along the outer peripheral surface of the inner layer 4, the thick-walled portion 3a is arranged along the reinforcing core 2, and the thin-walled portion 3b is compressed by the reinforcing core 2. state. Therefore, although the hose wall 1 is green and transparent as a whole, a spiral pattern emerges due to the difference in shades of yellow between the thick portion 3 a and the thin portion 3 b o...
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