JP5328036B2 - Rice washing machine - Google Patents

Description

  The present invention relates to a rice washing machine, and more particularly to a rice washing machine that performs rice washing by stirring with a stirring member.

  As for the rice washing machine, devices having various structures such as jet water flow, screw type, stirring type (see Patent Documents 1 and 2) have been developed. Moreover, as shown in patent document 3, rice washing, spin-drying | dehydration, and immersion are performed separately with the separate apparatus.

JP-A-7-236568 JP-A-8-117620 JP-A-6-170251

  However, in the aggregate | assembly which combined such an individual apparatus, there exists a problem that a rice washing plant will enlarge. In recent years, the demand for food safety has been severe, and cleaning of the apparatus has become very troublesome.

  Therefore, an object of the present invention is to downsize and simplify an apparatus including a rice washer, improve work efficiency, greatly reduce management costs, and facilitate cleaning work.

  A rice washer 1 according to claim 1 includes a rice supply unit 2 and a rice discharge unit 3, a container 4 for washing rice, provided in the container 4, a rotating shaft 5, and fixed to the rotating shaft 5. A stirring unit 7 having a stirring blade 6, and a feeder 8 that is provided in the rice discharge unit 3 and has a rotation shaft 81 and a discharge feed member fixed to the rotation shaft 81 and rotates forward and backward. The discharge feed member includes a paddle 9 smaller than the stirring blade 6 provided on the rotation shaft of the feeder 8 and rotates integrally. The feeder 8 is rotated in the reverse direction, and the rice in the rice discharge unit 3 is moved upward. A function of assisting the washing of the rice by scraping it into the container 4 and a function of quantitatively discharging the rice in the container 4 and the rice discharging unit 3 when the feeder 8 rotates forward. It is a rice washing machine characterized by providing. Further, the rice washer 1 of claim 2 includes a flap valve 12 provided in the rice discharge portion 3 on the downstream side of the feeder 8 and having a mesh body, and the flap valve 12 is a discharge port 32 of the rice discharge portion 3. By supplying and discharging water and supplying hot air at the position where the rice is closed, the rice is washed, immersed and surface-dried in the container 4, and the flap valve 12 is connected to the outlet 32 of the rice discharge unit 3. The washed rice in the container 4 is discharged at a position where the rice cake is opened.

  The feeder is a rice feeder having a plurality of functions of a rice washing auxiliary function and a discharging function. Since this feeder has a plurality of functions, it is called a multi-feeder in the embodiment. The surface drying of rice is the removal of surface moisture by hot air. It is for making it a suitable state for milling etc. by making rice into a state of flipping without stickiness. The stirring blades can take various forms such as blades, paddles, and screws. The discharge feed member fixed to the rotating shaft may be a screw structure, a paddle structure, or the like.

  The rice washing apparatus is preferably a batch type rice washing. Moreover, the rice discharge part of this rice washing machine can also be connected to an aerodynamic transport apparatus. As the method of use, either a pressure-type pneumatic transportation or a suction-type pneumatic transportation can be applied. Since the feeder does not have an air lock function like a rotary valve, a rotary valve or the like having an air lock function is required under the feeder when transporting by pneumatic feeding. However, the air lock function is not necessary when performing suction pneumatic transportation.

  In addition, it is applied not only to high concentration transportation, medium concentration transportation, and low concentration transportation, but the concentration depends on the mixing ratio between the amount of rice and the amount of gas in the transportation piping. Etc. will change. These settings are conceptual and do not have public standard setting standards. However, in terms of stabilizing the transport gas pressure, it is considered that the utility value increases as the concentration (ratio of rice and air) increases.

  According to the first aspect of the present invention, the rice washing machine is reduced in size and simplified to reduce the manufacturing cost, the rice is prevented from remaining in the rice washing dead space, the rice washing efficiency is increased, and the height of the discharge part of the rice washing apparatus is increased. Can be lowered. By washing the rice and drying the surface, it can be in a state suitable for milling and the like, and the efficiency of milling and the like can be increased.

  In addition, multiple functions of rice washing, dipping, and surface drying can be realized with a single device and can be operated in a batch mode, making it possible to downsize and simplify the device, improve work efficiency, and greatly reduce management costs. And cleaning work can be performed very easily. Furthermore, since water and gas can be supplied to the pipe, the inside of the pipe can be dried and is clean.

It is a front view which shows the internal structure of the rice washer of Embodiment 1 of this invention. It is a partial expansion perspective view of the rice discharge part of the rice washing machine. It is a left view which shows the internal structure of the rice washing machine (rice discharge part seen from arrow X in FIG. 1). (A) (b) is a front view of the main paddle of the rice washing machine. It is a top view of the flap valve of the rice washing machine. (A) (b) is operation | movement explanatory drawing of the rice washing machine. It is a front view which shows the internal structure of Embodiment 2 of the rice washing machine. It is a front view which shows the internal structure of Embodiment 3 of the rice washing machine. It is a left view which shows the internal structure of Embodiment 3 of the rice washing machine.

  Hereinafter, the rice-washing machine 1 which is Embodiment 1 of this invention is demonstrated with reference to FIGS. The rice washing machine 1 includes a rice supply unit 2 provided in the upper part and a rice discharge part 3 provided in the lower part, a container 4 for washing rice, a rotary shaft 5 provided in the container 4 and arranged in a horizontal direction, A stirring unit 7 having a main paddle 6 fixed to the rotating shaft 5, and a multi-feeder 8 provided in the rice discharge unit 3 and rotating forward and reverse. The multi-feeder 8 includes a rotating shaft 81, A sub-paddle 9 serving as a discharge feed member that rotates integrally with the rotating shaft 81 and is set to be smaller than the main paddle 6, and when the agitating unit 7 washs the rice in the container 4, the multi-feeder 8 is reversed. The auxiliary paddle 9 rakes up the rice in the rice discharge unit 3 and transfers it into the container 4 to assist in washing the rice, and when the multi-feeder 8 rotates forward, the rice discharge unit 3 and the container 4 with the function of quantitatively discharging the rice in 4; Furthermore, a pipe 11 communicating with the rice discharge unit 3 and a flap valve 12 having a net provided in the rice discharge unit 3 on the downstream side of the multi-feeder 8 are provided. By supplying and discharging water and supplying warm air to the pipe 11 at a position where the discharge port 32 is closed, washing, dipping and surface drying are performed in the container 4, and the flap valve 12 is connected to the rice discharge unit 3. The washed rice in the container 4 is discharged at a position where the discharge port 32 is opened. Hereinafter, each part will be described in detail.

  The rice discharge unit 3 includes a casing 31 and a discharge port 32 that is open at the end of the casing 31. As shown in FIG. 3, the rice discharge unit 3 is arranged eccentrically with respect to the axis of the container 4. Since the rice washing raw material is biased to either direction depending on the rotation direction of the main paddle 6, the rice discharging unit 3 is provided by shifting to the biased side.

  The container 4 is a substantially cylindrical drum, and an inclined surface 41 is formed on the bottom surfaces of the left and right end portions so as to have a drum shape. An opening 3 a is formed on the bottom surface and communicates with the case 31. A predetermined number (four in the figure) of paddles 6 are arranged on the outer diameter surface of the rotary shaft 5 at different phase angles (for example, 90 °) and predetermined intervals in the length direction of the rotary shaft 5. 5 are attached in the radial direction. The container 4 includes support legs 46 and an exhaust duct 47. The number and arrangement of the main paddles 6 can be changed as appropriate.

  4A shows the inner pair of main paddles 6b and 6c, and FIG. 4B shows the outer pair of main paddles 6a and 6d. The reason why the main paddles 6 a and 6 d are different in shape from the main paddles 6 b and 6 c is that the inclination of the front end surface needs to match the inclination of the inclined surface 41 in order to correspond to the inclined surface 41. The paddles 6a to 6d are each provided with a shaft and a blade provided at the tip of the shaft. The shape, structure, etc. include various aspects.

  The agitating unit 7 includes a drive side bearing unit 72 of the rotary shaft 5, a driven side bearing unit 73 of the rotary shaft 5, and a drive motor 75 connected to the rotary shaft 5 outside the drive side bearing unit 72. The rotary shaft 5 supported by the side bearing unit 72 and the driven side bearing unit 73 is rotatably mounted in the horizontal direction so that the main paddle 6 is driven to rotate.

  The multi-feeder 8 is formed on the outer peripheral surface of the rotary shaft 81 on the discharge port 32 side, a rotary shaft 81 that is coaxially disposed in the casing 31 in the horizontal direction, a bearing 82 that supports the rotary shaft 81, and the rotary shaft 81. A screw 83, a drive motor 84 that rotationally drives the rotary shaft 81, and a sub-paddle 9 that is smaller than the main paddle 6 are provided. The casing 31 includes a rice discharge portion case 85 having an open top and a bottomed cross-section having a reverse horseshoe shape, and a cylindrical portion 86 connected to the rice discharge portion case 85 and having a smaller diameter. Here, the rotating shaft 81 is horizontal and parallel to the rotating shaft 5. The auxiliary paddle 9 is provided on the outer diameter surface of the region on the container 4 center side of the rotary shaft 81 to which the screw 83 as a discharge feed member is fixed (the side far from the discharge port 32), and the rotary shaft 81 and the screw 83. And a plurality (four in this case) are attached in the radial direction. As shown in FIG. 2, the sub-paddle 9 has a paddle surface inclined at a predetermined angle (here, 30 ° with respect to the vertical direction) toward the discharge port 32 side. The inclination angle is not limited to this, and can be set to an appropriate angle as long as rice is fried upward. The sub-paddle 9 is obtained by reducing the size of the main paddle 6, and the size is preferably 2/1 to 1/3 or less.

  When the stirring unit 7 cleans the rice in the container 4, the multi-feeder 8 is reversely rotated R (clockwise in FIG. 3), and the rice in the rice discharge unit 3 is scraped and transferred into the container 4. The movement of rice is as shown by the solid arrows in FIG. At this time, it is preferable that the main paddle 6 forms a cyclic flow in which rice gathers from the left and right ends of the container 4 to the center and the collected rice diffuses from the center to the left and right ends. On the other hand, when the multi-feeder 8 rotates forward N (counterclockwise in FIG. 3), the rice in the rice discharge unit 3 and the container 4 is discharged. At this time, the movement of the rice is indicated by a solid line arrow in FIG. As shown. The direction of the paddle surface of the sub paddle 9 and the arrangement on the rotary shaft 81 are set so as to achieve the rice movement as shown in FIGS.

  The multi-feeder 8 has a rice washing auxiliary function and a quantitative discharge function. Therefore, the structure of the rice washer 1 can be simplified. Moreover, the rice can be introduced easily by reducing the height of the rice washing machine 1.

  A drain pipe 13 is branched from the pipe 11. The tube 11 is in the shape of a container here. The length and thickness of the tube are appropriately set according to the purpose. The tube 13 is connected to the tube 11, and the tube 13 is provided with a valve 14. A tube 15 is connected to the tube 11. This pipe 15 is provided with a valve 16. Further, a pipe 17 branched from the pipe 13 is provided. The pipe 17 is provided with a valve 18. The tube 17 may be connected directly from the tube 11. The valves 14, 16, 18 may be either manual or automatic. In the case of the automatic type, it is preferable to provide an electromagnetic control valve and a control device for driving and controlling the electromagnetic control valve. The installation location of the pipe 15 and the valve 16 is not limited to the illustrated location. For example, the pipe 15 and the valve 16 are provided in the upper part of the container 4, the pipe 11, the pipe 13 and the valve 14, the pipe 17 and the valve 18 are left as they are, the water is supplied from the pipe 15, and the flushed rice (rinse) It is also possible to carry out the washing mode). Details will be described in a third embodiment.

  As shown in FIG. 5, the flap valve 12 is a flap structure valve including a shaft 12a, a frame member 12b attached to the shaft 12a, and a net 12c stretched on the frame member 12b. As shown by the arrow in FIG. 1, the flap valve 12 can be rotated at an angle within a predetermined range (for example, 90 °), and opens and closes the discharge port 32.

  The rice discharge unit 3 may be connected to an air-fuel mixture generation unit, and the upstream end may be connected to an air transport line. The rice discharge unit 3 falls from the pressure air supplied from the upstream side and the discharge port of the multi-feeder 8. A mixture may be produced by mixing with rice, and the mixture may be discharged downstream. Since the multi-feeder 8 does not have an air lock function like a rotary valve, a rotary valve or the like provided with an air lock function is required under the multi-feeder 8 in the case of pressure-type pneumatic transportation. However, the air lock function is not necessary when performing suction pneumatic transportation.

  Next, operation | movement of the rice washing machine 1 of this embodiment is demonstrated. The rice washing machine 1 is for washing various kinds of rice in a rice cooking factory or a rice flour factory.

    When washing the rice washer 1 of the embodiment, first, the flap valve 12 is in a vertical state, and the opening 32 of the rice discharge unit 3 is closed. Next, rice is introduced from the rice supply unit 2, the valves 14 and 18 are closed, the valve 16 is opened, water is supplied to the container 4 through the pipe 15, the pipe 11, and the discharge port 32. Fill with water. The drive motor 75 is driven, the rotary shaft 5 supported by the drive-side bearing unit 72 and the driven-side bearing unit 73 starts rotating, and the drive motor 84 also starts reverse rotation R (see FIG. 3). The rotation shaft 81 supported by the rotation starts reverse rotation R. As a result, as shown in FIG. 6A, the main paddle 6 inside the container 4 rotates to start stirring the rice in the water, washing the rice, and assisting the stirring by the sub paddle 9. . The auxiliary paddle 9 can return the rice in the direction opposite to the discharge direction in the rice discharge part case 85 and can lift the rice into the container 4 to give the rice an upward driving force. Since the rice can return to the rice discharge part case 85, suitable circulation is performed, the auxiliary function to the rice washing by the paddle 6 works effectively, and the stirring ability is remarkably increased. The screw 83 provided coaxially with the rotary shaft 81 provided with the sub-paddle 9 also rotates in the reverse direction, returning the rice in the direction opposite to the discharge direction (discharge port 32 side). In other words, the gate is closed and the rice is prevented from being discharged. If the rotation speed of the auxiliary paddle 9 is increased, the upward propulsion driving force is increased. The net 12c prevents the rice from flowing out. The amount of water is appropriately adjusted by operating the valves 14 and 16.

  After washing, the valve 16 is closed, the valve 14 is opened, the water in the container 4 is drained to the outside through the pipes 11 and 13, the valve 14 is closed, and the rice is immersed in water for a predetermined time. You can also. At this time, the valve 14 and the valve 16 may be operated to newly add water to the container 4. Moreover, you may replace the water in the container 4 suitably. The soaking time of rice and the amount of soaking water of rice can be appropriately changed according to the kind of rice and the purpose of rice (rice cooking, pulverization, etc.). The rotating shaft 5 may be rotated at a speed lower than the speed at the time of washing the rice, the rotation may be stopped, or the paddles 6a to 6d may be rotated at predetermined or appropriate time intervals so as not to cause uneven immersion.

  When the above immersion is completed, the valves 15 and 18 are closed, the valve 14 is opened, and water is discharged from the pipes 11 and 13. It is preferable to stop the drainage and to forcibly dry the surface of the rice. This is to facilitate handling such as transportation of rice. When drying the surface, the valve 16 is opened, the valves 14 and 18 are closed, the warm air is fed into the container 4 and the rotating shaft 5 is rotated. The rice can be dried to a suitable dry state. When applied to rice milling, the purpose of surface drying after washing is to cut the surface moisture of the rice, not to remove the moisture inside the rice. The rotational speed of the sub paddle 9 may be different, for example, by making the rotational speed during surface drying slower than the rotational speed during rice washing.

  When such processing is completed, the flap valve 12 is rotated 90 ° as shown in FIG. Valves 14 and 16 are closed and valve 18 is opened. Then, the drive motor 84 is switched from reverse rotation R to normal rotation N (see FIG. 3). If it does so, it will be in the state where the gate opened, and rice will be transferred to the direction of the discharge port 32, and will be discharged | emitted quantitatively through the discharge port 32, the pipe | tube 11, and the pipe | tube 17. Here, the rice falls by its own weight in the vertical direction in the tube 11. The tip of the tube 11 has a narrow cross section. Basically, when discharging, the main paddle 6 is rotated to promote rice discharge. In this way, the rice is transferred from the container 4 through the opening 3a to the outlet 32 side by the sub paddle 9 and the screw 83, so that the rice after washing is discharged to the downstream side. However, the rotation speed of the main paddle 6 and the sub paddle 9 can be sufficiently changed during the washing and discharging. For example, the rotation speed of the sub paddle 9 is preferably set to be faster than the rotation speed at the time of discharging.

  In addition, in this embodiment, the batch type which repeats the operation | movement of rice washing, immersion, and surface drying is employ | adopted.

  The rice washer 1 of this embodiment has the following effects.

  (1) The multi-feeder 8 of the rice discharge unit 3 can be provided with a plurality of functions of a rice washing auxiliary function and a discharge function, and the apparatus can be simplified. Further, since the multi-feeder 8 rotates in reverse during the washing of rice by the main paddle 6, it is possible to prevent the rice in the rice discharge unit case 85 from being swept up by the container 4 and staying in the rice discharge unit case 85, Rice that is not washed or insufficiently washed will not be mixed with the product, so the quality of the washed rice is improved. When the washed rice is supplied to the mill, the quality of the milling is improved. In addition, since the secondary paddle 9 assists in washing the main paddle 6, rice washing efficiency is increased.

  (2) The rice discharge part 3 can be reduced in size. Since the multi-feeder 8 is integrally provided at the lower portion of the container 4, the height of the apparatus can be reduced, and the rice charging operation is facilitated.

  (3) The rice washing machine 1 is equipped with multiple functions of rice washing, dipping, and surface drying, and can be operated in a batch mode, thus miniaturizing and simplifying the equipment, improving work efficiency, and greatly increasing management costs. Reduction and easy cleaning work. Since not only water but also warm air can be supplied to the tube 11, the inside of the tube is dried, generation of mold and the like can be prevented, and the tube 11 is clean.

  (4) Because the surface moisture of rice can be removed by forcing the surface to dry after immersion, handling up to downstream processes such as rice crushing equipment (rice flour production equipment) (transportation, etc.) Becomes easier.

  Next, the rice washing machine 101 which is Embodiment 2 of this invention is demonstrated with reference to FIG. Since this rice washing machine 101 is substantially the same in configuration as the rice washing machine 1, the explanation is applied to the common parts and the differences will be explained. This rice washer 101 is provided with a plurality of feed paddles 183 having the same structure as the sub paddle 9 instead of the screw 83 of the rice washer 1. The feeding direction of the sub paddle 109 and the feeding paddle 183 is the same.

  Next, the rice washing machine 201 which is Embodiment 3 of this invention is demonstrated with reference to FIG. 8, FIG. Since this rice washing machine 201 is substantially the same in configuration as the rice washing machine 1, explanations are provided for common portions, and differences will be described. As shown in FIG. 8, the rice washer 201 connects the pipe 215 having only the hot air function to the pipe 211, and the water supply function may be performed by the pipes 215 and 215 ′ whose positions are changed as shown in FIG. . As shown in FIG. 9, a pipe 215 and a valve 216 for supplying water and / or hot air may be provided in the case 231. Further, a pipe 215 ′ and a valve 216 ′ for supplying water and / or hot air may be provided in the container 204. When supplying water with the pipe | tube 215 and the valve | bulb 216 (or pipe | tube 215 'and valve | bulb 216'), it can replace with batch type rice washing and can perform flow type rice washing (running water washing rice) etc.

  The present invention is not limited to the above-described embodiment, and modifications and the like can be made without departing from the technical idea of the present invention. It will be included in the technical scope of the invention.

  The present invention is used in rice mills, rice cookers, breweries and the like.

DESCRIPTION OF SYMBOLS 1 ... Rice washer 2 ... Rice supply part 3 ... Rice discharge part 3a ... Opening 31 ... Casing 32 ... Discharge port 4 ... Container 41 ... Inclined surface 46 ... Support leg 47 ... Exhaust duct 5 ... Rotating shaft 6 ... Main paddle (stirring blade) )
6b, 6c ... main paddles 6a, 6d ... main paddle 7 ... stirring unit 72 ... driving side bearing unit 73 ... driven side bearing unit 75 ... driving motor 8 ... multi-feeder (feeder)
81 ... Rotating shaft 82 ... Bearing 83 ... Screw (discharge feed member)
84 ... Drive motor 85 ... Rice discharge part case 86 ... Tube part 9 ... Sub paddle (discharge feed member)
N ... Forward rotation R ... Reverse rotation 11 ... Pipe 12 ... Flap valve 12a ... Shaft 12b ... Plate material 12c ... Net 11 ... Pipe 13 ... Drain pipe 17 ... Pipes 14, 16, 18 ... Valve

Claims (2)

A container for washing rice with a rice supply unit and a rice discharge unit;
A stirring section provided in the container and having a rotating shaft and a stirring blade fixed to the rotating shaft;
A feeder provided in the rice discharge portion, having a rotation shaft and a discharge feed member fixed to the rotation shaft;
With
The discharge feed member is provided on the rotary shaft of the feeder and rotates integrally therewith, and includes a paddle smaller than the stirring blade,
The function of assisting the washing of the rice by rotating the feeder in reverse, the rice in the rice discharge part being lifted up and transferred into the container, and when the feeder rotates in the forward direction in the container and the rice discharge part And a function of quantitatively discharging rice.   A flap valve provided in the rice discharge part downstream of the feeder and having a net, and at a position where the flap valve closes the opening of the rice discharge part, By supplying the rice, the rice is washed, dipped and surface-dried in the container, and the washed rice in the container is discharged at a position where the flap valve opens the opening of the rice discharge part. Item 1. A rice washer.

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