JP2003252418A - Structure for monitoring wear for pipe conveyer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple means for monitoring a wear condition in a pipe line of a pipe conveyer, in particular, in a bent part where severe wear is generated. <P>SOLUTION: In this pipe conveyer 10, the pipe line 12 is arranged to be circulated according to a conveying route, a feed port 13 and a discharge port 14 for a conveyed subject are provided in a midway of the pipe line 12, a conveying means is laid to allow circulation inside the pipe line, and a wear- resistant replaceable component is attached to the bent part of the pipe line 12. In the pipe conveyer 10, a wear loss judge-determining means is fitted to the replaceable component. In concretely saying, a wear loss judge-determining pin or a wear loss judge-determining plate is embedded as the wear loss judge- determining means in the replaceable component, the replaceable component is formed into jacket structure, an inside of the jacket is brought into a fixed pressure, and a pressure detector is attached to detect fluctuation of internal pressure in the jacket. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for monitoring the wear of pipe conveyors.

[0002]

2. Description of the Related Art The general construction of a pipe conveyor 70 is as follows.
As shown in FIG. 7, a pipeline 72 is arranged so as to circulate from a drive unit 71 along a transport path, and an input port 73 and a discharge port 74 for the transported object are provided in the pipeline 72. Is circulated around an endless chain or an endless wire to which blades or buckets are attached at appropriate intervals.

In the above-mentioned pipe conveyor, since the curved portion of the pipe line is abraded to a great extent, Japanese Patent Application No. 3-155732 and Japanese Patent Application No. 8-250090 have been proposed as a prior art related to the "pipe corner exchange structure". There is an issue.

The former is "in a pap conveyor having a conveying means which is circulated and driven in a pipeline having a corner portion, an opening portion is provided at the corner portion of the pipeline,
A plurality of corner unit members each having a single shape are lined up and covered in the extending direction of the pipeline, and the corner unit members are detachably fixed to the opening. "

The latter is also referred to as "an outer elbow having a window formed in the longitudinal direction which forms a pipe joint which is provided in a bent portion in the middle of a conveying pipe and which connects both pipes, and the window. The restraint on the inner elbow is released by rotating the retaining ring that suppresses the inner elbow to be mounted, and thus the endless link /
The inner elbow and / or the outer elbow is removed and replaced in the direction away from the chain. "

[0006]

However, it is not possible to determine how much wear has progressed by merely providing a structure in which the curved portion can be replaced by a wear-resistant replacement part, and it is not possible to judge the time of the parts. It was not something that could be exchanged.

Therefore, when a prior art survey was conducted to monitor the wear condition of the curved portion of the pipe conveyor, no equivalent could be found.

In view of the above situation, it is an object of the present invention to provide a simple means for observing the wear condition of a pipeline of a pipe conveyor, and especially of a curved portion which is heavily worn.

[0009]

In order to solve the above problems, the present invention is arranged so as to circulate a pipeline along a transport path, and an inlet and an outlet for an object to be transported are provided in the pipeline. In a pipe conveyor in which a conveying means is circulated around a pipe line and a wear-resistant replacement part is attached to a curved portion of the pipe line, the replacement part is equipped with wear amount determining means. Adopted, specifically, as the wear amount determination means, one in which a wear amount determination pin or a wear amount determination plate is embedded in the replacement part, as the wear amount determination means, the replacement part has a jacket structure, This jacket has a constant pressure and is equipped with a pressure detector for detecting fluctuations in the internal pressure of the jacket. As the wear amount judging means, an electrode is arranged in the replacement part in an electrically disconnected state, and this electrode is Low power Is applied, and as the wear amount determining means, an electrically isolated conductor is embedded in a replacement part, and a low voltage is applied to both ends of this conductor through a resistor. .

According to the invention configured as described above, the wear condition can be determined by pulling out the wear amount determination pin, and by retracting the tip of the wear amount determination pin into the replacement part and embedding it. When the tip appears, it can be judged that the wear has reached its limit.

According to the invention of claim 1, when the wear of the pipeline reaches the space of the jacket, the internal pressure decreases, and the pressure detector detects this pressure decrease to judge the wear. It is also possible to convert pressure into voltage (or current) and issue a signal (alarm).

According to the invention of (1), when the object to be conveyed is a conductor, it can be judged by the conduction between the electrodes and the resistance change, and when the object is a dielectric, the wear of the pipeline can be known by the capacitance change between the electrodes. Of course, a signal (or alarm) can be emitted.

According to the invention, the wear can be detected by breaking the conductor embedded by the wear.

According to the above, centralized management is possible at the management center.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. 2 and 3 show a state in which the conduit 12 is curved 90 degrees, but it is not restricted by the angle.

The pipe lines 12 on the upstream and downstream sides are connected by a flange 15, and a mounting mount 18 for a replacement part 17 is formed inside the bending part 16, and the replacement part 17 for the bending part is attached to this mount 18. .

The replacement part 17 includes a wear amount determining pin 19p.
Is embedded by screwing. The degree of wear is determined by removing the replacement part 17 from the pipe line 12 when the pipe conveyor 10 is stopped, pulling out the wear amount determining pin 19p, and determining the remaining length of the pin.

In this embodiment, when the tip of the wear amount determining pin 19p is retracted to the wear limit of the replacement part 17 and embedded, the tip of the wear amount determining pin 19p becomes visible due to wear. It can also be determined as wear.

FIG. 4 shows a wear amount judging plate 19a embedded from the inner surface of the replacement part 17 at a position corresponding to the wear limit. The edge of the wear amount judging plate 19a is an arc of the inner surface of the replacement part 17 or the like. It is designed to be spaced.

In this embodiment, the abrasion is determined when the edge of the abrasion amount determining plate 19a becomes visible due to abrasion.

In FIG. 5, a replacement electrical conductor 20 is provided on the replacement part 17, and a low voltage is applied to the electrical conductor 20 via a resistor so that when the wear exceeds a limit, the electrical conductivity is reduced. The conductor 20 is broken and the circuit opens to give a signal (alarm)
Emit.

As can be seen in FIG. 5, electrodes (not shown) are electrically floated on the replacement part 17, the tip is retracted to the wear limit and embedded, and when a low voltage is applied to the electrodes, between the electrodes or between the electrode and the ground. The two are electrically connected to each other to form a closed circuit and a signal (alarm) is emitted.

In FIG. 6, the replacement part 17 is a jacket 22 provided with a groove 21, and a pressure gauge 23 is attached with the inside of the jacket 22 being a positive pressure or a negative pressure. In this embodiment, when the wear progresses and the jacket 22 breaks, the pressure gauge 2
3 detects it and judges that it has worn out.

In this embodiment, a wear signal (alarm) can be issued by connecting the jacket 22 to a constant pressure source (not shown) and attaching a pressure gauge with contacts or a pressure sensor.

[0025]

As described above, according to the present invention,
It is possible to accurately grasp the wear limit of the pipe line by loading the wear determination means on the replacement part of the curved part that is attached to and detached from the curved part of the pipe conveyor that is heavily worn. You will be able to.

[Brief description of drawings]

FIG. 1A is a front view and FIG. 1B is a side view of a pipe conveyor adopting the present invention.

FIG. 2A is a side view of a flange portion of the first embodiment,
(B) Coaxial direction sectional view, (c) FIG.

3 (a) is a vertical cross-sectional view showing an enlarged main part of FIG. 2 (b).
(A) View of FIG.

FIG. 4A is a longitudinal sectional view of the second embodiment, and FIGS.
View of the figure

FIG. 5A is a vertical sectional view of the third embodiment, and FIGS.
View of the figure

FIG. 6A is a longitudinal sectional view of the fourth embodiment, and FIGS.
View of the figure

FIG. 7 is a perspective view of a general pipe conveyor.

[Explanation of symbols]

10,70 Pipe conveyor 11,71 Drive unit 12,72 pipelines 13,73 input port 14,74 outlet 15 flange 16 curved part 17 replacement parts 18 mount 19p Wear amount judgment pin 19a Wear amount judgment plate 20 electrical conductors 21 groove 22 jacket 23 Pressure gauge

Claims (5)

[Claims] 1. A pipe is arranged so as to circulate along a conveying route, an inlet and an outlet for an object to be conveyed are provided in the middle of the pipe, and a conveying means is circulated around the pipe to circulate the pipe. A wear monitoring structure for a pipe conveyor, wherein a wear-resistant replacement part is attached to a curved portion of a road, wherein the replacement part is loaded with wear amount determining means. 2. The wear monitoring structure for a pipe conveyor according to claim 1, wherein a wear amount determining pin or a wear amount determining plate is embedded in a replacement part as the wear amount determining means. 3. As the wear amount determining means, the replacement part has a jacket structure, and the inside of the jacket has a constant pressure,
The wear monitoring structure for a pipe conveyor according to claim 1, further comprising a pressure detector for detecting a variation in the internal pressure of the jacket. 4. The wear monitoring of a pipe conveyor according to claim 1, wherein an electrically isolated electrode is arranged in the replacement part as the wear amount determining means, and a low voltage is applied to the electrode. Construction. 5. The wear amount determining means is characterized in that an electrically isolated conductor is embedded in a replacement part, and a low voltage is applied to both ends of the conductor via a resistor. The wear monitoring structure for the pipe conveyor described.