JPH0231841A - Rice husker - Google Patents

Abstract

PURPOSE:To efficiently utilize the rice husking rubber roll layers by forming a pair of rice husking rolls into the laminar constitutions wherein the rice husking rubber roll layers are formed on the outer peripheries of the axial core drums made of an electrical conductor via the electrically-conductive cushion rolls and providing an electric conduction detecting circuit between the axial core drums. CONSTITUTION:When rice husking operation is performed, the rice husking rubber roll layers 10 of a pair of rice husking rolls 1, 1' are gradually worn and the diameters are made small. Finally the rubber roll layers have been worn completely or nearly completely and mutual cushion roll layers 9 are made to such a state that these are brought into contact with each other. When the roll layers have been made to this state, the electric conduction state between the axial core drums 8 of the rolls 1, 1' is detected with an electric conduction detecting circuit. Therefore the state in which the rubber roll layers 10 have been completely worn can be surely known as the useable limit of the rolls 1, 1'. Therefore the rubber roll layers 10 of the rolls 1, 1' can be efficiently utilized without leading the rubber roll layers.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a hulling roll that is used until the rubber roll layer of the hulling roll is completely worn out, so that the end of its use can be accurately detected. It is related to the device.

Conventional technology In the past, in a hulling device equipped with a pair of hulling rolls, the state where the hulling rolls were worn out and became unusable was treated as 1.
The device for detecting the air was developed by the Japanese Patent Publication No. 61-1718.
The one described in Publication No. 68 is known.

Problems to be Solved by the Invention By the way, in the above-mentioned conventional device, when the huller roll is worn out and its diameter becomes smaller to a predetermined limit, a switch is activated by the amount of movement of the huller roll. The detection accuracy is low, and it is difficult to know when the hulling rubber roll layer is completely worn out. The reality is that 471 rubber rolls are being replaced with quite a bit of the rubber roll remaining.

In view of the conventional situation, the present invention is capable of reliably detecting the limit at which the hulling rubber roll layer of the hulling roll is completely worn out, and without leaving the hulling rubber roll layer of the hulling 1T:X roll. It is an object of the present invention to provide a hulling device that can be used completely without waste.

Means for Solving the Problems The present invention has the following configuration, and has the following features: 1)
This achieves the purpose stated in item 1j.

That is, the configuration is that in a hulling device a that is equipped with a pair of hulling rolls that rotate while being pressed against each other under a constant pressure, the pair of hulling rolls are attached to the outer periphery of a core drum made of a conductive material such as metal. The conductive cushion roll has a stone-like structure with a hulling rubber roll layer formed through a conductive cushion roll, and an electrical continuity detection circuit is provided between the core drums of the pair of hulling rolls. This is a rice hulling device.

Function The hulling rubber roll layer of the pair of hulling rolls gradually becomes Jl'/! during hulling work. In other words, when the layers of the rubber hulling rolls of a pair of hulling rolls reach a completely worn state, the conductive cushion roll layers of the pair come into contact with each other. Therefore, since the electrical continuity detection circuit between the core drums of the hulling rolls detects the electrical continuity between the core drums, it is known that the pair of hulling rolls have reached the end of their use. At the end of use, the hulling rubber roll H is completely worn out and is at its limit, so the hulling roll can be used without wasting it.

Example Embodiments of the present invention will be described with reference to the drawings.

An example of a hulling device is shown in FIG. 1, where 1° and 1' are a pair of hulling rolls, one of which, the hulling roll 1, is supported by a fixed position shaft 2, and the other hulling roll is supported by a fixed position shaft 2. The husking roll 1' on the position displacement shaft 3 side is connected to a rotatable arm 5 by a fulcrum 4, and the husking roll 1' is supported by an M1 pressure device 6. It is configured so that it is pressed into contact with a constant pressure. The above pair of hulling rolls 1. lo are rotated in opposite directions and at different rotational speeds. 7 is a paddy supply hopper.

As shown in FIG. 2, the pair of hulling rolls 1 and 1' are formed by forming a hulling rubber roll layer 10 on the outer periphery of a temporary core drum 8 with a cushion roll layer 9 interposed therebetween. be.

The cushion roll layer 9 is made of synthetic rubber that has been subjected to conductive processing, and is made by mixing a synthetic rubber material with a metal filler such as carbon black, aluminum, brass, or iron. is electrically connected to the core drum 8, and the core drum 8 is electrically connected to the fixed position shaft 2 and the position displacement shaft 3, respectively.

Although not shown, a circuit is connected between the fixed position shaft 2 and the position displacement shaft 3 to detect the air conduction between them, and a circuit is connected between the position fixed shaft 2 and the position displacement shaft 3. The circuit structure is such that when the layer 10 is worn out and the cushion roll layer 8 is exposed, continuity is detected through the paddy sandwiched therebetween or by direct contact. In addition, in order to detect the above-mentioned conduction, a pair of hulling rolls 1. A constant potential difference is generated between the axial core drums 8 of LO, but this potential difference may be provided at all times, or the potential difference may be applied when the rubber roll 510 of the paddy 41 approaches its use limit, and furthermore, it may be applied in a pulsed manner. A high voltage may be applied.

In the hulling device configured as described above, when the hulling work is performed, the hulling rubber roll layers 10 of the pair of hulling rolls 1, 1' gradually wear out and their diameters become smaller (the third
and FIG. 4), the hulling rubber roll layer 10 of the pair of hulling rolls 1.1' is finally completely completed as shown in FIG.
In addition, the cushion roll layers 9 are almost completely worn out, and the cushion roll layers 9 are in contact with each other. When this state is reached, a pair of hulling rolls 1. The state of electrical continuity between the axial drums 8 at [°] is detected by an electrical continuity detection circuit. For this reason, a pair of hulling rolls 1. As the usage limit of lo, rice hulling rubber [l-
It is possible to reliably know when the rubber roll layer 10 is completely worn out, and the pair of hulling rolls 1.1°
It can be used without leaving any zeros. Since the cushion roll layer 9 is made of synthetic rubber, as shown in FIG. 3 or 4, even if only one of the hulling rubber roll layers 10 wears out first, the paddy 11 The process continues without any problem until the state shown in FIG. 5 is reached, and it is detected that the limit of use has been reached.

Another embodiment of the present invention is shown in FIG. 6, and in this embodiment, the hulling rubber roll layer 1 of one hulling roll 1
A mechanism is added to display the amount of movement of the shaft core due to zero wear using an indicator 11. In this embodiment, the electric detection function may be activated after detecting that the amount of movement of the shaft center approaches the limit of use.

Effects of the Invention The present invention provides a hulling device comprising a pair of hulling rolls that rotate while being pressed against each other under a constant pressure, as described in IRJ, in which the pair of hulling rolls are made of a conductive material such as metal. It has a layered structure in which a hulling rubber roll layer is formed on the outer periphery of the core drum via a conductive cushion roll layer, and an electrical continuity detection circuit is provided between the core drums of the pair of hulling rolls. Because it is a product, it is possible to reliably detect the limit at which the hulling rubber roll layer of the hulling roll is completely worn out, and it is possible to use it completely without leaving the hulling rubber roll layer of the hulling roll without any waste. Achieve the desired effect.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a longitudinal sectional front view showing the main parts of the hulling device, Fig. 2 is a front view of a pair of hulling rolls, and Figs. 3 and 4 show the wear of the same. FIG. 5 is a front view showing the progressing state, FIG. 5 is a front view showing the same limit state of use, and FIG. 6 is a longitudinal sectional front view of the main part of the hulling device showing another embodiment.

Claims (1)

[Claims] In a hulling device equipped with a pair of hulling rolls that rotate while being pressed against each other at a constant pressure, the pair of hulling rolls are attached to the outer periphery of a core drum made of a conductive material such as metal via a conductive cushion roll layer. A hulling device characterized in that it has a layered structure in which a rubber roll layer for hulling is formed, and an electrical continuity detection circuit is provided between the core drums of the pair of hulling rolls.