JPH0423581B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a crushed grain detection device for a rice milling plant.

Frequent occurrence of crushed grains during milling not only reduces the taste but also reduces the milling yield. Therefore, it is necessary to constantly check the generation of crushed grains and adjust the rice milling machine to keep the amount of crushed grains as small as possible.

Conventionally, the ratio of crushed grains during rice milling was calculated by randomly extracting 20 kg from the outlet of the rice milling machine, taking out rice grains whose length was 2/3 to 1/4 of a full grain, and calculating the ratio of crushed grains. The quality of the rice was controlled by adjusting the rice milling machine according to the ratio. For example, the conventional artificial method of weighing 20 kg of sample milled rice, sorting the length of the rice grains, weighing only the crushed grains, calculating the weight ratio, recording the ratio, and post-processing the crushed grains is difficult to manage during milling. However, it has the disadvantage that it cannot be applied quickly, and it cannot be effectively used for quality control of milled and milled rice in rice milling plants that have a milling process consisting of multiple rice milling machines.

In view of the above points, the present invention provides at least one rice milling machine installed in the middle of a rice milling flow process consisting of a plurality of rice milling machines.
By connecting a unique crushed grain detection device to each sample rice extraction section, the state of crushed grain generation at the sample rice extraction section set at any position in the rice milling flow process of the rice milling plant can be confirmed by highly accurate crushed grain mixing rate. We will ensure smooth and accurate handling and work management, and reliably improve the quality of our products.
The purpose of the present invention is to develop and provide a high-performance crushed grain detection device for a rice milling plant that can reliably mass-produce high-quality grain-free rice that is not contaminated with crushed grains at all times.

The present invention will be explained with reference to embodiment figures. Figure 1 shows a rice milling plant in which a plurality of sample rice extraction sections 4, 5,
6 is an illustrative diagram in which the granule detection device 7 is connected to the granule detection device 7.

The raw brown rice is supplied to the grinding rice mill 1 through the grain frying machine 8 and the rice grain tank 9, where it is ground and polished to create numerous fine scratches on the surface of the rice grains so as to give them a rough skin, thereby increasing the coefficient of friction. The enlarged rice grains are supplied to the friction rice miller 2 via the grain lifting machine 10 and the rice grain tank 11, and the rice grains, which have numerous fine scratches on the grain surface, are friction milled to achieve a rice milling yield of about 92%. Be refined.
Next, the rice grains are supplied to the humidifying and cooling device 13 by the grain frying machine 12, where the temperature of the rice is cooled by cold and humid air, and the surface of the rice grains is moistened and softened. The rice is supplied to the friction type rice milling machine 3, where it is polished again by friction to a predetermined degree of polishing. This polished rice is supplied from the grain lifting machine 14 to the rice polishing machine 16 via the rice grain tank 15, and the rice grains are polished to a glossy surface by a polishing action and then taken out of the machine.

Sample rice take-out parts 4,
5 and 6 are respectively provided, and the discharge ends of the respective take-out portions 4, 5, and 6 are respectively provided on the upper surface of the belt of the sample transport conveyor 18, and a crushed particle detection device 7 is provided at the discharge end of the transport conveyor 18. The samples flowing down from each sample rice take-out section 4, 5, and 6 are respectively supplied to the crushed grain detection section 7 via the conveyor 18, and the crushed grain mixing ratio is measured respectively. It is formed so that it is returned to the rice milling flow process through the rice milling process.

Next, the crushed particle detection device 7 (see FIG. 2)
A supply port 21 with an automatic feed roll 21A is provided on the upper wall of the box-shaped machine frame 20, a discharge port 22 is provided on one side wall of the machine frame 20, and a pair of shaft pulleys 23, 24 are provided inside the machine frame 1. The two pulleys 23 are connected to an endless belt 26 made of an elastic material and provided with a large number of crushing pot holes 25 on the circumference. . The container 29 is placed on the upper part of the base 30 via a load cell 31 so as to be vertically movable to form a weight measuring section 32, and the container 33 is a container for measuring the crushed particles discharged from the higher end of the endless belt 26. 29 is a downflow gutter for crushing particles, 34 is an automatic discharge valve provided in the downflow gutter 33, and 35 is a measuring container 29.
36 is a supply port for crushing provided in the container 29, 37 is an automatic discharge valve provided on the discharge side of the container 29, and 38 is the sized and crushed granules measured by the weight measuring section 31, respectively. a ratio calculation section consisting of a calculation device that calculates the crushed particle mixing rate based on the measured weight of the
9 is a printer.

Next, the sample rice take-out parts 4, 5, 6 (see Fig. 5) discharge ports 17A, 17B,
It consists of sample flow tubes 40 each connected to a section 17C, and the upper end opening of the flow tube is connected and fixed to a sample extraction port 42 equipped with an automatic switching valve 41 provided at each discharge port. A lower end opening is provided on the upper belt surface of the conveyor 18, and rice grain scattering prevention plates 43, 43 are fixed on both sides of the opening, respectively.

Because of the above configuration, each outlet 17A of each rice milling machine 1, 2, 3 in the rice milling flow process of the rice milling plant,
Sample rice extraction parts 4, 5, 6 installed at 17B and 17C
The rice samples flowing out from each flow down to the upper belt surface of the lower conveyor 18, and are conveyed and sequentially supplied to the crushed grain detection device 7. (For example, we will explain the case where the sample rice is discharged from the sample rice take-out part 5 provided at the discharge port 17B of the friction rice mill 2.) The sample rice flowing down from the supply port 21 on the upper wall of the machine frame 20 is placed on the belt. The particle layer diffuses to the side surface to form a thin layer of particles, and the upper surface of the belt moves to a higher side and rotates, and is also vibrated by the vibrating device 27. The particles roll downward while undulating the surface (vibrating in a wave-like manner), and due to the wave action, the small crushed particles in the particle bed settle to the bottom of the particle bed.
In addition, since the large-grain size particles are transferred to the top surface, the crushed particles that have settled to the bottom surface of the layer are immersed in each pot hole 25, conveyed to a high position along with the belt surface, and discharged from the end of the belt, and are discharged from the top surface of the layer. The replaced grains roll down the inclined belt surface and are discharged from the lower end of the belt. Then, when a predetermined period of time has elapsed, the automatic feed roll 21A of the supply port 21 is stopped and the sorting operation is continued.
The crushed grains that flow down and accumulate in the crushed grains 9 and are discharged from the higher end of the belt flow down and accumulate in the crushed grain downflow trough 33 by the closed discharge valve 34. Then, the weight of the sorted particles in the container 29 is measured by the load cells 31, 31, the discharge valve 37 is opened, and the particles are discharged outside the machine.
4 is opened, the crushed grains are stored in the container 29, the weight of which is measured, and the crushed grains are discharged outside the machine in the same manner as described above. The ratio calculation unit 38 inputs each measurement signal from the weight measuring unit 32 that measures the respective weights of the sized and crushed particles, and calculates the crushed particle mixing ratio, which is displayed and printed by the printer 39. Become. If there is a change in the mixed ratio of crushed grains compared to the mixed ratio of crushed grains in the sample rice discharged from the sample rice take-out section 4 installed at the discharge port 17A of the grinding rice mill 1 in the previous process, immediately It is possible to inspect the load condition of machine 1, find the cause of the change, and take countermeasures.

According to claim 2, since the crushed particle detection device 7 is equipped with an alarm device 44 that issues an alarm based on the detection or ratio signal, the calculation is performed by the ratio calculation unit 38 in the crushed particle detection device. If the mixed ratio of crushed grains changes abnormally (for example, when it exceeds 7% in the friction rice mill 2), an alarm will sound, and the cause of the failure will be immediately eliminated (replacement of parts, etc.)
This has the effect of allowing safe operation to continue and preventing frequent occurrence of crushed particles.

Next, the load adjustment device 45 of the rice milling machine shown in FIG.
A compression lid 47 is provided at the rice milling port 46 of a rice milling room in which a rice milling trochanter is mounted in a perforated wall milling cylinder, and is suspended from a horizontal rack-shaped pivot 48, and a compression lid 47 is attached to the pivot 48 for adjusting the degree of compression. A screw shaft 49 is fixed in a protruding manner, and a forward/reverse rotating electric motor 50 is connected to the base of the screw shaft 49. As the electric motor 50 rotates forward and backward, the screw shaft 49 rotates, and a weight 51 mounted thereon is rotated back and forth. The compression lid 47
is designed to rotate back and forth to adjust the load inside the milling chamber.

According to claim 3, the crushed grain detection device 7 is connected to a load adjustment device 45 that adjusts the load of the rice mill 1, 2, or 3 based on its detection or ratio signal. A comparison circuit is provided in the particle crushing detection device 7, and a standard particle crushing number or particle crushing ratio is set in the setting device, and the forward/reverse rotary electric motor 50 is operated based on the differential signal, so that the compression lid 47 is properly controlled. It can be opened and closed automatically to automate the load adjustment in the milling chamber, and has the effect of preventing the occurrence of crushed grains.

According to claim 4, since the crushed grain detection device 7 is equipped with a printer 39 that records the detection or ratio signal, data from the printer is analyzed to understand the characteristics of the raw rice. In addition, it is possible to conveniently adjust the grain crusher (not shown) provided in the subsequent process, promote rice milling work (including sorting work), and improve quality control and work efficiency.

Incidentally, the installation locations of the sample rice extracting sections 4, 5, and 6 are not limited to those shown in the drawings, and may be appropriately selected and installed, such as a rice grain tank provided in the rice milling flow process, or a rice milling flow pipe. Further, the crushed grain detection device 7 may be provided individually in each rice milling machine.

In this way, the crushed grain detection device for a rice milling plant of the present invention includes a rice grain sorting section that separates sorted grains and crushed grains, a weight measuring section that measures the weight of each sorted grain, and a rice grain contamination by the measured weight. A crushed grain detection device equipped with a ratio calculation unit for calculating the rice milling rate was installed, and the crushed grain detection device was connected to the crushed grain detection device of at least one sample rice removal section installed in the middle of the rice milling flow process consisting of a plurality of rice milling machines. It is possible to confirm the state of crushed grains in the sample rice take-out section set at any position in the rice milling flow process of the plant using the highly accurate crushed grain mixing ratio, and to smoothly and accurately carry out countermeasures and work management. This has the effect of reliably improving the quality of the product and reliably mass-producing high-quality polished rice that is not contaminated with broken grains at all times.

[Brief explanation of drawings]

The drawings are illustrations of embodiments of the present invention. Fig. 1 is a front view of the rice milling plant, Fig. 2 is a side sectional view of the crushed grain detection device, Fig. 3 is a partial sectional view of the endless belt, Fig. 4 is a partially cut-away side view of the rice milling machine, and Fig. 5 is a partially cutaway side view of the rice milling machine. The figure is a partially cut-away side view of the sample rice extraction section. 1, 2, 3... Rice milling machine, 4, 5, 6... Sample rice removal section, 7... Crushed grain detection device, 8... Grain frying machine, 9... Rice grain tank, 10... Grain frying machine, 11... Rice grain tank, 12...
Grain lifting machine, 13... Humidification cooling device, 14... Grain lifting machine, 1
5...Rice grain tank, 16...Rice grinder, 17A, 17
B, 17C...Discharge port, 18...Sample transport conveyor, 19...Grain frying machine, 20...Box-shaped machine frame, 21...Supply port, 21A...Automatic feeding roll, 22...Discharge port, 2
3, 24... Shaft pulley, 25... Grain crushing pot hole, 26... Endless belt, 27... Vibration device, 28... Rice grain sorting section,
29... Measuring container, 30... Base, 31... Load cell, 32... Weight measuring section, 33... Downflow gutter for crushing particles, 3
4...Automatic discharge valve, 35...Grain regulating supply port, 36...Crushing supply port, 37...Automatic discharge valve, 38...Ratio calculation section, 39...Printer, 40...Sample flow tube, 41
...Automatic switching valve, 42...Sample extraction port, 43...Scatter prevention plate, 44...Alarm device, 45...Load adjustment device, 4
6...Rice discharge port, 47...Compression lid, 48...Horizontal pivot,
49...Screw shaft for adjusting degree of compression, 50...Forward/reverse rotation electric motor, 51...Weight.

Claims (1)

[Claims of Claims] 1. A rice grain sorting section that separates sorted grains and crushed grains, a weight measuring section that measures the weight of each sorted grain, and a ratio calculation section that calculates the crushed grain mixing rate based on each measured weight. Detection of crushed grains in a rice milling plant, characterized in that the crushed grain detection device is provided with a crushed grain detection device equipped with a rice milling machine, and the crushed grain detection device is connected to at least one sample rice take-out section provided in the middle of a rice milling flow process consisting of a plurality of rice milling machines. Device. 2. The crushed grain detection device for a rice milling plant according to claim 1, wherein the crushed grain detection device includes an alarm device that issues an alarm based on the detection or ratio signal. 3. The crushed grain detection device for a rice milling plant according to claim 1, wherein the crushed grain detection device is connected to a load adjustment device that adjusts the load of the rice milling machine by its detection or ratio signal. 4. The crushed grain detection device for a rice milling plant according to claim 1, wherein the crushed grain detection device is equipped with a printer for recording the detection or ratio signal.