JPS63229155A - Sample rice crusher - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a sample rice grinder for producing samples by finely grinding rice grains.

Conventional technology In an apparatus for analyzing the components of rice grains using near-infrared analysis, etc., it is necessary to finely crush the sample in order to perform accurate analysis. In other words, the smaller the particle size of the sample, the better the measurement accuracy. A conventional sample rice crusher will be explained with reference to FIG. A wire mesh 20 is installed around the crushing chamber 19, and the wire mesh 2
A blade wheel 22 directly connected to a motor shaft 21 is rotatably mounted in the motor shaft 21. A supply port 23 is provided substantially above the center of the impeller 22, and the reference numeral 24 is a sample container, and the reference numeral 25 is a storage chamber for the crushed sample. While holding the container 24 in your hand and tilting it slightly, feed it into the supply port 23 little by little. The introduced sample is struck by the impeller 22 rotating at high speed against the wire mesh 20, where it is pulverized into powder. Then, it passes through the pulverized sample network 20 and is stored in the storage chamber 25.

However, with the method of feeding the sample to the sample rice grinder by tilting the container manually, it is difficult to always feed a constant sample. Therefore, there was a problem that the input amount was too large and the electric motor stopped operating due to overload, making it impossible to crush the sample.

Problems to be Solved by the Invention It is an object of the present invention to solve the above-mentioned problems and to prevent the motor from stopping or burning out due to overload by supplying a fixed amount of a sample.

Means for solving the problem: The grain feeding end of the rice sample metering device is made to face the feed port of the crushing device.

The sample rice discharged from the feeding end of the feeding device is finely ground by the grinding device.

Embodiments An embodiment of the present invention will be described with reference to the drawings. 1st
The figure is a partially cutaway side view showing an embodiment of the present invention. Reference numeral 1 designates a sample rice crusher, in which a lid 3 is placed on the top of a base 2, and the base 2 and the lid 3 are fastened together with a fastener 4. A wire mesh 6 is provided around the crushing chamber 5, a blade wheel 9 directly connected to a motor shaft 8 of an electric motor 7 is rotatably mounted within the wire mesh 6, and a supply port 10 is provided approximately above the center of the blade wheel 9. . The reference numeral 11 is a vibration supply device, and the sample tank 12 is supported by a column 13. The discharge port 14 of the sample tank 12 is connected to the vibration supply path 1.
5, the feeding end of the vibrating supply path 15 faces the grain supply port 10, and 16 is a vibrating device;
7 is a storage chamber.

Next, the operation of the above configuration will be explained. Sample tank 12
The sample rice is supplied from the discharge port 14 to the vibration supply path 15,
When the vibrating device 16 is operated, the sample rice is sequentially sent from the feeding end of the vibrating feed path 15 to the feed port 10. The sample rice that has fallen into the crushing chamber 5 from the supply port 10 is struck against the wire mesh 6 by the impeller 9 rotating at high speed in the crushing chamber 5, and is crushed into pieces there. The crushed sample rice is discharged from the through hole of the wire mesh 6 and stored in the storage v17. Then, loosen the stopper 4 to release the fastened state between the lid body 3 and the base 2,
The lid 3 is removed and the ground sample rice is taken out and measured using various measuring devices.

FIG. 2 is a partially cutaway side view showing another embodiment. Reference numeral 18 is a rotary valve, the upper part of which is connected to the sample tank 1.
2 and the lower portions are connected to the supply ports 10, respectively. The sample rice in the sample tank 12 is intermittently discharged by rotation of the rotary valve 18, and is supplied from the supply port 10 to the crushing chamber 5 and crushed. Note that the rotary valve 18 is driven by an electric motor (not shown).

Further, it is necessary to control the amount of rice supplied from the feeding device so that the electric motor 7 does not stop due to an overload caused by an excessive amount of feed during operation of the sample rice crusher 1. In other words, the load on the electric motor 7 is detected and the amplitude and imaging frequency of the vibration device 16 are controlled based on the load, and the rotary valve 18
The amount of sample supplied is controlled by changing the rotation speed.

Alternatively, the inclination angle of the vibrating supply path 15 may be controlled by the load of the electric motor 7, or an opening/closing device may be provided at the discharge port 14 of the sample tank 12 to control the opening/closing degree of the opening/closing device to control the amount of sample rice supplied. There is.

In this embodiment, the sample rice is crushed by the action of the impeller 9 and the wire mesh 6, but there is also a method in which counter-rotating crushing rolls are provided to crush the sample rice.

Effects of the Invention Since a sample rice supply device is provided, a constant amount of sample rice can always be input, and the electric motor will not be overloaded due to excessive input and stop operation, making it impossible to crush the sample rice. .

[Brief Description of the Drawings] Fig. 1 is a partially cutaway side view showing an embodiment of the present invention;
The figure is a partially cutaway side view showing another embodiment, and FIG. 3 is a partially cutaway side view showing a conventional example. 1... Sample rice crusher, 2... Base, 3... Lid body,
4... Stopper, 5... Grinding chamber, 6... Wire mesh, 7.
...Electric motor, 8...Motor shaft, 9...Wing wheel, 10.
... Supply port, 11... Imaging supply device, 12... Sample tank, 13... Strut, 14... Discharge port, 15...
- Vibration supply path, 16... Imaging device, 17... Storage chamber, 18... Rotary valve, 19... Grinding chamber, 2
0...wire mesh, 21...electric motor shaft, 22...blade wheel,
23... Supply port, 24... Container, 25... Storage chamber.

Claims (6)

[Claims] (1) A sample rice crusher characterized in that the grain feeding end of the sample rice quantitative supply device faces the supply port of the crusher. (2) The sample rice crusher according to claim (1), wherein the crushing device comprises crushing rolls rotating in opposite directions. (3) The sample rice crusher according to claim (1), wherein the crushing device comprises a cylinder and a rotary impeller disposed inside the cylinder. (4) The sample rice crusher according to any one of claims (1) to (3), wherein the quantitative feeding device is a vibration feeding device. (5) The sample rice crusher according to any one of claims (1) to (3), wherein the quantitative feeding device is a rotary valve. (6) Claim No. 1 (1) in which the supply amount from the supply device is controlled according to the load of the electric motor of the crushing device.
) to (5).