Rice washing drainage supply device

Abstract

To provide a technique for carrying out and transferring waste water containing grain components to a pig farm and the like (conveyance destination) with simple configuration and good efficiency in a facility (conveyance source) for grain treatment such as rice washing treatment.SOLUTION: A rice washing waste water supply device 10 has a structure for supplying rice washing waste water to a moving tank 100 which is carried into and carried out from a rice washing facility, and comprises: a supply part 31 which supplies rice washing waste water to the moving tank 100; a frame body 21 to which the moving tank 100 is set; and an operation part 41 which is provided on the frame body 21, and operates between a connection position connecting the supply part 31 to the moving tank 100 and a retreat position retreating the supply part 31 from the moving tank 100.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to rice washing drainage supply equipment such as rice washing equipment and non-rice-washing manufacturing equipment.

Background Art

[0002] Conventionally, as a rice washing device, for example, as described in Japanese Patent No. 4239147 (Patent Document 1), there is known a non-rice-washing manufacturing device that polishes polished rice in water and centrifugally dehydrates the rice polished in water. The rice washing drainage generated by polishing contains nutrients such as rice bran and has value as a recycled material.

[0003] Therefore, as described in Japanese Unexamined Patent Application Publication No. 2012-120972 (Patent Document 2), the rice washing drainage discharged from the non-rice-washing manufacturing device is stored in a tank, and the inside of the tank is subjected to vacuum dehydration treatment to concentrate the rice washing drainage and increase the solid content. A concentration step, a waste treatment step of subjecting part or all of the recovered water dehydrated in the concentration step to waste treatment in a purification facility, and reusing the concentrated liquid obtained in the concentration step as feed or the like have been proposed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] Incidentally, rice milling plants and rice cooking plants equipped with water-adding pre-washed rice production equipment and rice washing equipment are located in urban areas close to consumption areas because they handle food for human consumption. On the other hand, facilities that reuse rice washing wastewater as feed, such as pig farms and livestock facilities, are located in suburban areas suitable for raising livestock. Therefore, the rice washing wastewater needs to be transferred to mobile tanks (also called returnable tanks) and transported by trucks or other vehicles to livestock facilities far from the rice washing facilities.

[0006] Rice washing facilities of factory scale generate hundreds of liters of wastewater per day, so it is necessary to reduce the workload required for transporting the wastewater and to efficiently remove it from the rice washing facility. Furthermore, considering that the wastewater is rich in nutrients, care must be taken to maintain its quality until it can be reused, and care must be taken to prevent contamination with dust and other foreign matter during removal. In addition, hygiene must be taken to prevent spills and contamination of the surrounding area during removal.

[0007] However, the aforementioned patent documents do not disclose any specific structure for transferring rice washing wastewater from rice washing facilities to reuse facilities such as livestock facilities using a mobile tank. On the other hand, considering the cost, we would like to avoid excessive automation and capital investment.

[0008] In view of the above circumstances, the present invention aims to provide a technology for efficiently transporting wastewater containing grain components from a facility that processes grains such as rice washing (transport source) to a pig farm or the like (transport destination) with a simple configuration. [Means for solving the problem]

[0009] For this purpose, the rice washing wastewater supply device according to the present invention has a structure that supplies rice washing wastewater to a mobile tank that is brought into and out of a rice washing facility, and comprises a supply unit that supplies rice washing wastewater to the mobile tank, a frame on which the mobile tank is set, a connection position provided on the frame that connects the supply unit to the mobile tank, and an operating unit that operates the supply unit to a retraction position that retracts it from the mobile tank. According to the present invention, rice washing wastewater can be efficiently packed into the mobile tank with a simple configuration.

[0010] In one aspect of the present invention, the operating part is an actuator mechanism that extends and retracts in the vertical direction. The actuator mechanism is not particularly limited, but examples include an air cylinder and a piston.

[0011] A preferred aspect of the present invention is that the supply unit includes a supply port from which the washed rice wastewater is discharged, and a receiving member located directly below the supply port in a retracted position to collect the washed rice wastewater that drips and falls from the supply port. In this aspect, contamination of the washed rice wastewater supply device by dripping washed rice wastewater is prevented, making it hygienic.

[0012] In a more preferred aspect of the present invention, the supply unit further includes a position detection member that is displaceable to either a first position or a second position relative to the supply unit, and is in contact with the mobile tank at the connection position to be in the first position, and is away from the mobile tank at the retracted position to be in the second position, and a link mechanism that connects the position detection member and the receiving member, and in conjunction with the second position the receiving member is placed in a waiting position directly below the supply port, and in conjunction with the first position the receiving member is raised. According to this aspect, the washed rice wastewater collected in the receiving member can be fed into the mobile tank.

[0013] Another aspect of the present invention further includes a weighing scale for measuring the weight of a mobile tank set within a frame.

[0014] In one aspect of the present invention, the supply unit has a sensor that detects the amount of rice washing wastewater stored in the mobile tank. In this aspect, the fullness of the mobile tank can be automatically detected.

[0015] As one aspect of the present invention, the invention further comprises a chemical additive unit connected to the supply unit for adding chemicals to the rice washing wastewater.

[0016] In one aspect of the present invention, the supply unit has a supply path and a supply port that allow the washed rice wastewater to flow from top to bottom, then change direction and be discharged laterally.

[0017] The rice washing wastewater supply equipment of the present invention comprises multiple rice washing wastewater supply devices as described above, branch pipes extending from the rice washing equipment and connecting to the supply sections of the multiple rice washing wastewater supply devices, and a switching valve provided in the branch pipe that communicates the rice washing equipment with one of the multiple rice washing wastewater supply devices and shuts off the piping to the remaining rice washing wastewater supply devices. According to the present invention, when a mobile tank set in one rice washing wastewater supply device is full of rice washing wastewater, it is sufficient to switch to a mobile tank set in another rice washing wastewater supply device, eliminating the need to interrupt the rice washing process and improving rice washing efficiency.

[0018] The rice washing wastewater supply equipment of the present invention comprises the rice washing wastewater supply device described above and a mobile tank, wherein a fork opening is formed in the lower part of the mobile tank through which the forks of a forklift are inserted and removed. The fork opening may be an elongated hole formed in the bottom of the mobile tank, or it may be a notch or a step. [Effects of the Invention]

[0019] Thus, according to the present invention, wastewater containing grain components can be efficiently transported to a pig farm or the like (destination) from a facility that processes grains such as rice washing (source) using a simple configuration. [Brief explanation of the drawing]

[0020] [Figure 1] This is an overall perspective view showing a rice washing wastewater supply device, which is one embodiment of the present invention. [Figure 2] This is an enlarged perspective view showing the rice washing wastewater supply unit of the same embodiment. [Figure 3] This is an enlarged perspective view showing the supply port of the rice washing wastewater supply unit. [Figure 4] It is a diagram showing the retracted position of the rice washing drain water supply unit. [Figure 5] It is a diagram showing the connection position of the rice washing drain water supply unit. [Figure 6] In FIG. 4, it is a side view showing the rice washing drain water supply unit. [Figure 7] It is a side view showing the supply port at a position midway from the retracted position to the connection position. [Figure 8] It is a side view showing the supply port at a position midway from the retracted position to the connection position. [Figure 9] In FIG. 5, it is a side view showing the supply port of the rice washing drain water. [Figure 10] In FIG. 4, it is a diagram showing the supply port of the rice washing drain water. [Figure 11] It is a cross-sectional view showing the supply port of the rice drain water. [Figure 12] It is a perspective view showing the rice washing drain water supply system of this embodiment.

Mode for Carrying Out the Invention

[0021] Hereinafter, embodiments of the present invention will be described in detail based on the drawings. FIG. 1 is an overall perspective view showing a rice washing drain water supply device according to an embodiment of the present invention. The rice washing drain water supply device 10 is provided in a rice washing factory equipped with a non-rice washing manufacturing device or rice washing equipment (not shown), and is a structure for carrying out the rice washing drain water generated during non-rice washing manufacturing or rice washing to the outside of the rice washing factory. The rice washing drain water supply device 10 includes a frame body 21 on which a moving tank 100 is set, a supply unit 31 for supplying rice washing drain water to the moving tank 100, and an operating unit 41 for connecting or disconnecting the supply unit 31 to the moving tank 100.

[0022] An empty mobile tank 100 is brought into and placed at the set position 11 defined by the frame 21. Once the mobile tank 100 is positioned at the set position 11, the tank inlet 101, located on the top surface of the mobile tank 100, is positioned directly below the supply unit 31. The rice washing wastewater supply device 10 displaces the supply unit 31 to connect to the tank inlet 101 and supplies rice washing wastewater to the mobile tank 100 to fill it. The full mobile tank 100 is then removed from the set position 11 by a forklift (not shown). This process is then repeated.

[0023] The mobile tank 100 is made to a predetermined standard size that fits the forks of a forklift. The mobile tank 100 is formed in a roughly cubic shape, and for example, its rated capacity is 1000L, and typically 800L to 900L of washed rice wastewater is poured into it. Referring to Figure 1, fork openings 102, 102 into which the forks are inserted and removed are formed at the bottom of the mobile tank 100. The fork openings 102 have standard dimensions common to well-known forklift pallets. In this embodiment, the fork openings 102 have an elongated cross-sectional shape, but as a modified example not shown, the fork openings 102 may be grooves formed on the bottom surface of the mobile tank 100 that extend straight in response to the forks.

[0024] The set position 11 is shaped to correspond to the mobile tank 100, for example, a rectangle such as a square, and has sleepers 12. The sleepers 12 are provided on the edge of the set position 11 and extend parallel to three of the four sides of the set position 11. In this embodiment, the sleepers 12 are arranged in a U-shape, and no sleepers 12 are placed on the side where the mobile tank 100 is loaded and unloaded (hereinafter also referred to as the front side). The sleepers 12 support the mobile tank 100 from below. The forklift operator can position the mobile tank 100 at the set position 11 using the frame 21 and sleepers 12 as guides.

[0025] The frame 21 is erected to straddle the set position 11 and has four columns 13-16, horizontal beams 17, 18, vertical beams 19, 20, and horizontal members 22. Two columns 13-16 are erected near the outside of two opposing sides of the set position 11. The horizontal beams 17, 18 extend parallel to each other across the set position 11, with each end connected to the upper end of the columns 13-16. The vertical beams 19, 20 extend parallel to two opposing sides of the set position 11, with each end connected to the upper end of the columns 13-16. The horizontal beams 17, 18 and vertical beams 19, 20 form a rectangle directly above the set position 11. Multiple horizontal members 22 are positioned directly above the set position 11 and are erected between two of the horizontal beams 17, 18.

[0026] Thus, the frame 21 is a gate-type structure erected to straddle the set position 11. The mobile tank 100 is brought into and out of the set position 11 from either the front or rear side of the frame 21, passing through one of the two remaining sides of the set position 11, excluding the side that is approximately parallel to the vertical beams 19 and 20.

[0027] This embodiment includes a weighing scale (not shown) for measuring the weight of the mobile tank 100, which is placed at a set position 11 within the frame 21. The weighing scale can measure the weight of the liquid inside the mobile tank 100.

[0028] The operating unit 41 comprises a base 42 supported from below by two horizontal members 22, a frame 43 erected in the central part of the base 42, and an actuator mechanism 44 held by the frame 43. The actuator mechanism 44 is, for example, an air cylinder or other fluid pressure cylinder including a cylinder extending vertically and a piston rod that moves back and forth from the lower end of the cylinder. A supply unit 31 is attached and fixed to the tip (lower end) of the piston rod. The supply unit 31 is displaced vertically by the actuator mechanism 44 and is selectively positioned between a connection position connected to the tank inlet 101 of the mobile tank 100 and a retracted position away from the mobile tank 100. The supply unit 31 is connected to a supply port 39 via a flexible hose 38. The supply port 39 is attached and fixed to the horizontal member 22 and supplies rice washing wastewater generated in a rice washing facility (not shown) to the supply unit 31.

[0029] A chemical additive unit 51 is installed adjacent to the frame 21. The chemical additive unit 51 has a pump 52 and a pH adjusting solution tank 53. The pH adjusting solution tank 53 is connected to a supply port 39 supported by the frame 21 via the pump 52 and a pipe 54. The pump 52 pumps up the chemical from the pH adjusting solution tank 53 and adds a predetermined amount of the chemical to a unit volume of rice washing wastewater flowing through the supply port 39. This adjusts the pH of the rice washing wastewater flowing through the supply unit 31 to an appropriate value. As a result, the shelf life of the rice washing wastewater in the mobile tank 100 is extended. In this embodiment, the pH adjusting solution tank 53 is made to the same dimensions as the mobile tank 100.

[0030] Figure 2 is a perspective view showing the supply unit 31 and operating unit 41 of this embodiment, enlarged and removed from view. If Figure 1 is considered a front view, Figure 2 shows the state viewed from a different direction (closer to the rear) than Figure 1. Figure 3 is a perspective view showing the supply unit 31 of this embodiment, enlarged and removed from view. Figures 4 and 5 are rear views showing the supply unit 31 and operating unit 41 of this embodiment, enlarged and removed from view. Figure 4 shows the retracted position UP of the supply unit 31, and Figure 5 shows the connection position DOWN of the supply unit 31. The supply unit 31 includes a supply path 32, a sensor 33, a cover 34, a receiving member 35, a link mechanism 36, and a bracket 37.

[0031] Figures 6 to 9 are explanatory diagrams of the operation of the supply channel 32. Figure 10 is a front view of the supply channel 32, showing the view in the direction of arrow X in Figures 6 and 7. Figure 11 is a cross-sectional view of the supply channel 32, showing the view of the cut surface when the supply channel 32 is cut along XI-XI in Figure 10, in the direction of the arrow. The supply channel 32 is a rigid pipe and includes a substantially horizontal upstream section 32b (Figure 2) connected to the hose 38, an intermediate section 32c that changes direction from the upstream section 32b and extends downward, and a supply port 32d which is the downstream end that extends further from the intermediate section 32c.

[0032] As shown in Figure 11, the upstream section 32b extends to the rear side beyond the supply port 32d at the downstream end of the supply path 32. Due to space limitations, only one side of the upstream section 32b that connects to the intermediate section 32c is shown in Figure 11, and the other side is omitted. The omitted other side is connected to the operating unit 41 (Figure 2). The supply port 32d at the downstream end of the supply path 32 is directed horizontally or diagonally towards the rear side. The supply port 32d in this embodiment is a tapered nozzle.

[0033] Referring to Figure 11, the flange-shaped lid 34 has a through hole 34c in its center, through which the intermediate section 32c passes. A guided portion 34d is provided in the through hole 34c of the lid 34. The guided portion 34d is guided by the intermediate section 32c in the longitudinal direction (vertical direction) of the intermediate section 32c, thereby allowing the lid 34 to be displaced vertically in the supply section 31. The lid 34 is biased to a relatively lower first position L1 by an elastic member (not shown). The displacement of the lid 34 will be described later.

[0034] A bracket 37 is attached and fixed to the portion of the intermediate section 32c below the first position L1 using bolts and nuts. The bracket 37 extends parallel to the intermediate section 32c and supports the sensor 33 and the receiving member 35. The sensor 33 is provided adjacent to the supply port 32d and points downward. When the supply port 32d is inserted into the mobile tank 100 from the tank inlet 101, the sensor 33 faces the liquid level in the tank 100 and can measure the liquid level. Therefore, it is possible to prevent the washed rice wastewater from overflowing from the mobile tank 100.

[0035] The receiving member 35 has a cup portion 35c at its lower end and is pivotally supported at its upper end by a pin 37d on the bracket 37. When the supply unit 31 is in the retracted position (Figure 4) and the lid 34 is in a first position L1 that is relatively lower to the supply unit 31, the receiving member 35 is located directly below the supply port 32d. Specifically, the cup portion 35c is located directly below the supply port 32d and opens upward to collect the washed rice wastewater dripping from the supply port 32d. In addition, the upper edge 35f of the side wall of the cup portion 35c covers at least a part of the supply port 32d. This allows the cup portion 35c to catch any dripping liquid that is discharged laterally from the supply port 32d with flow velocity. In this embodiment, the upper edge 35f covers the lower part of the supply port 32d. However, in a modified example not shown, the side wall of the cup portion 35c may cover the entire supply port 32d, or the side wall of the cup portion 35c may be in close contact with the supply port 32d to seal it.

[0036] The link mechanism (link) 36 shown in Figure 6 has its upper end connected to the guided portion 34d by a pin 36b and its lower end connected to the receiving member 35 by a pin 36d. Pins 36b and 36d are positioned away from pin 37d and parallel to pin 37d. The link mechanism 36 connects the lid 34 and the receiving member 35. When the lid 34 in the supply section 31 is displaced between a first position L1 that is relatively lower and a second position L2 that is relatively higher, the receiving member 35 is moved in conjunction with the link mechanism 36.

[0037] Next, the operation of the receiving member 35 will be explained.

[0038] Regarding the operation diagrams in Figures 6 to 9, Figure 6 corresponds to the retracted position of the supply unit 31 (Figure 4) and shows the state as viewed in the direction of arrow VI in Figure 4. Figure 9 corresponds to the connection position of the supply unit 31 (Figure 5) and shows the state as viewed in the direction of arrow IX in Figure 5. Figures 7 and 8 correspond to intermediate states.

[0039] As shown in Figure 4, when the piston rod 46 is retracted into the cylinder 45 and the supply unit 31 is in a retracted position away from the tank inlet 101, as shown in Figure 6, the lid 34 does not come into contact with the tank inlet 101 and is biased to a first position L1 relatively lower. The bracket 37 comes into contact with the guided portion 34d from below and defines the lower limit of the guided portion 34d. This lower limit corresponds to the first position L1 of the lid 34.

[0040] As shown in Figure 5, when the piston rod 46 extends from the lower end of the cylinder 45, the entire supply unit 31 descends. At this point, the lid 34 first comes into contact with the ribs that make up the tank inlet 101. These ribs are erected on the upper surface of the tank 100.

[0041] The outer diameter of the lid 34 is larger than the inner diameter of the tank inlet 101. Therefore, even if the supply unit 31 descends, only the lid 34 is prevented from descending by the tank inlet 101. Referring to Figure 8, the supply unit 31 other than the lid 34 continues to descend as indicated by arrow G. As a result, the lid 34 is pushed upward relative to the lid, the link mechanism 36 pulls up the receiving member 35, and the receiving member 35 rotates and stands upright in the direction of arrow H around the pin 36d.

[0042] Next, when the supply unit 31 is displaced downward to the connection position (Figure 5), the lid 34 is pushed up towards the tank inlet 101 to a relatively higher second position L2, as shown in Figure 9. The lid 34 locks into the tank inlet 101 and makes tight contact with it from above. Concentric outer diameter ribs 103 are further erected on the outer diameter side of the tank inlet 101. The diameter of the outer diameter ribs 103 is also smaller than the diameter of the lid 34, and the upper edge of the outer diameter ribs 103 also abuts against the lower surface of the lid 34. The contact between the inner diameter tank inlet 101 (and the outer diameter ribs 103) and the lid 34 prevents foreign matter from entering the mobile tank 100. As a modification, the tank inlet 101 may have a large inlet diameter in addition to the small inlet diameter as shown in Figure 5. In the case of a large inlet diameter, the outer diameter ribs 103 define the tank inlet.

[0043] At the connection point of the supply unit 31, the supply port 32d, sensor 33, receiving member 35, link mechanism 36, and bracket 37, which are positioned below the lid 34, are inserted into the tank. The lid 34 is also pushed upward by the edge of the tank inlet 101 and held in a relatively higher second position L2. As a result, the receiving member 35 moves away from the supply port 32d and around to the front side (left side of the page in Figure 9), and the supply port 32d is completely opened.

[0044] The cup portion 35c, which is raised by the link mechanism 36, rotates in the mobile tank 100 to the opposite side of the opening direction of the supply port 32d, and the cup portion 35c is tilted on its side. Since the side wall of the cup portion 35c, which has an upper edge 35f, slopes diagonally downward from the bottom wall of the cup portion 35c, all of the washed rice wastewater accumulated on the bottom wall of the cup portion 35c falls into the mobile tank 100.

[0045] When the supply unit 31 is connected, the washed rice wastewater flowing through the tubular supply channel 32 is discharged from the supply port 32d. Since the supply port 32d is directed sideways rather than straight down, the discharged washed rice wastewater falls in a parabolic arc and reaches either the side wall inside the mobile tank 100 or the liquid surface near the side wall. According to this embodiment, splashing of the arriving droplets can be reduced, and the supply unit 31 is less likely to be contaminated by droplets.

[0046] As shown in Figure 9, the cover 34 moves relative to the supply unit 31 from the first position L1 to the second position L2, thereby detecting that the entire supply unit 31 is in the connection position DOWN and the absolute position of the supply unit 31. When the cover 34 is not in the second position L2, for example, in the first position, it is detected that the entire supply unit 31 is in the retracted position UP as shown in Figure 6, or in an intermediate position as shown in Figure 7.

[0047] Incidentally, the rice washing wastewater supply device 10 of this embodiment utilizes a reusable tank-type mobile tank 100 and is equipped with a supply unit 31 that can be attached to and detached from the tank inlet 101 at the top of the mobile tank 100 to supply rice washing wastewater. As a result, the rice washing wastewater is transported directly to the livestock farm by the mobile tank 100, and no processing such as concentration of the rice washing wastewater is performed on the rice washing facility side, allowing the rice washing wastewater to be used as a feed product. Furthermore, the transport work is simplified as only the operation of attaching and detaching the supply unit 31 to the tank inlet 101 is required, and the remaining work can be mechanized with forklifts, trucks, etc., reducing the burden of transport work and greatly improving work efficiency. In addition, on the rice washing facility side shown in Figure 1, a vacuum dewatering device, etc., is not required, resulting in low equipment investment costs and eliminating the need for installation space for a vacuum dewatering device, etc. Furthermore, as mentioned above, because the transportation process is simple and easy, it can be carried out by feed suppliers such as pig farms, in addition to workers at rice washing (milling) plants. This eliminates the need for rice washing (milling) plants to assign their own workers, saving time and effort, improving the production of pre-washed or pre-washed rice, and benefiting both parties involved.

[0048] Furthermore, the rice washing drain supply device 10 of this embodiment is installed above the mobile tank 100 and has an operating unit 41 that moves up and down toward the tank inlet 101 of the mobile tank 100 to enable the attachment and detachment of the supply unit 31, and a supply passage 32 that is inserted into the mobile tank 100 from the tank inlet 101 to enable the supply of rice washing drain. The operating unit 41 may, for example, be superimposed on an actuator mechanism 44 and have a select switch or push button operated by an operator to automatically move the supply passage 32 up and down. This eliminates the need for the operator to directly grasp and attach or detach the supply passage 32, improving work efficiency. Alternatively, instead of the operating unit 41, a manual method, such as a lever mechanism, may be used to move the supply passage 32 up and down.

[0049] Furthermore, the supply unit 31 of this embodiment is inserted into the mobile tank 100 and has a sensor 33 that detects the amount of rice washing wastewater in the mobile tank 100, so it can automatically detect when the mobile tank 100 is full.

[0050] Furthermore, this embodiment includes a weighing scale (not shown) located at a set position 11 below the mobile tank 100, which detects the weight of the washed rice wastewater inside the mobile tank 100. This allows for automatic detection of when the mobile tank 100 is full. Alternatively, a sensor 33 may be used to detect the fullness of the mobile tank 100 instead of the weighing scale.

[0051] Furthermore, in this embodiment, the receiving member 35 moves away from the supply port 32d of the supply passage 32 when it is in the connection position, so that the washed rice wastewater discharged from the supply port 32d is not obstructed by the flow of the receiving member 35 and can be supplied to the mobile tank 100. On the other hand, when the receiving member 35 is in the retracted position, it waits directly below the supply port 32d and receives all of the washed rice wastewater that drips and falls from the supply port 32d of the supply passage 32, so that when it is in the retracted position, that is, when the mobile tank 100 is replaced, unsanitary conditions due to dripping can be prevented. As a result, when the mobile tank 100 is replaced, dripping occurs below the supply section 31, preventing unsanitary conditions such as contamination by bacteria and insects in the environment of pre-washed rice production where food is processed, and there is no need to clean up the dripping.

[0052] Furthermore, the mobile tank 100 of this embodiment has a fork opening 102 at its lower part that can accommodate the forks of a forklift.

[0053] Furthermore, the rice washing wastewater supply device 10 of this embodiment is equipped with a chemical additive unit 51 (pH adjusting solution tank 53) that can supply a substance (for example, a pH adjusting solution, granular chemical material, etc.) that maintains the shelf life of water containing nutrients. This improves the shelf life of the rice washing wastewater.

[0054] Furthermore, the rice washing (rice milling) plant of this embodiment is equipped with multiple rice washing wastewater supply devices 10, 10.... as shown in Figure 12, and switching valves 62 to 64 are provided in the rice washing wastewater transfer pipe 61 that connects the pre-washed rice manufacturing device (not shown) or rice washing device (not shown) to the multiple rice washing wastewater supply devices 10. This allows for the exchange of mobile tanks 100 in a plant with a large production volume of pre-washed rice by switching the switching valves 62 to 64 to another empty mobile tank 100 when one mobile tank 100 is full. This reduces the production loss time due to stopping the operation of the pre-washed rice manufacturing device, enables continuous production, and improves the efficiency of the rice washing process.

[0055] Here, the switching valves 62-64 may be configured to be switched by individual select switches 66-68 as shown in Figure 12, or they may be configured to switch automatically in conjunction with the weighing scale and sensor 33 mentioned above without the need for select switches. As for the switching variations of the mobile tank 100, for example, as shown in Figure 12, they can be expanded in units of two so that they branch in two directions and then branch in two directions again, and the mobile tanks 100 are switched automatically as appropriate according to the amount of rice washing work. For example, in the production of pre-washed rice for one day, the rice washing wastewater may be switched to be stored in multiple return tanks, and at the end of the day's production, a full mobile tank 100 may be replaced with an empty mobile tank 100.

[0056] According to the mobile tank 100 of this embodiment, the storage capacity of the rice washing wastewater is improved, so full mobile tanks 100 can be stocked at the rice washing factory and transported all at once, thereby reducing transportation costs. For example, depending on the amount of pre-washed rice processed, multiple mobile tanks 100, 100, etc., can be efficiently collected once a week, such as four.

[0057] Although embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiments within the same scope as the present invention, or within an equivalent scope. [Industrial applicability]

[0058] This invention is advantageously utilized in food manufacturing and processing equipment. [Explanation of Symbols]

[0059] 10 Rice washing drainage supply device, 11 Set position, 12 Sleeper, 21 Frame, 31 Supply unit, 32 Supply path, 32d Supply port, 33 Sensor, 34 Cover (detection member), 35 Receiving member, 36 Link mechanism, 37 Bracket, 38 Hose, 39 supply port, 41 operating part, 44 actuator mechanism, 51 Chemical additive section, 61 Rice washing drainage transfer pipe, 100 Mobile tank, 101 Tank inlet, 102 Fork opening.

Claims

1. A structure that supplies wastewater from rice washing to a mobile tank that is brought into and brought out of the rice washing facility, A supply unit that supplies the rice washing wastewater to the mobile tank, The frame on which the aforementioned mobile tank is set, A rice washing wastewater supply device provided on the frame, comprising an operating unit that moves the supply unit to a connection position for connecting it to the mobile tank and to a retraction position for retracting the supply unit from the mobile tank.

2. The rice washing drain supply device according to claim 1, wherein the operating part is an actuator mechanism that extends and retracts in the vertical direction.

3. The rice washing wastewater supply device according to claim 1, wherein the supply unit has a supply port from which the rice washing wastewater is discharged, and a receiving member located directly below the supply port in the retracted position for collecting the rice washing wastewater that drips and falls from the supply port.

4. The rice washing wastewater supply device according to claim 1, further comprising a weighing scale for measuring the weight of the mobile tank set inside the frame.

5. The rice washing wastewater supply device according to claim 1, wherein the supply unit has a sensor for detecting the height of the water level of the rice washing wastewater stored in the mobile tank.

6. The rice washing wastewater supply device according to claim 1, further comprising a chemical additive unit connected to the supply unit for adding chemicals to the rice washing wastewater.

7. The rice washing wastewater supply device according to claim 1, wherein the supply unit has a supply path and a supply port that allow the rice washing wastewater to flow from above downwards, then change direction and discharge laterally.

8. A plurality of the rice washing wastewater supply devices according to any one of claims 1 to 7, Branch piping extending from the aforementioned rice washing equipment and connected to the respective supply sections of the plurality of rice washing wastewater supply devices, A rice washing wastewater supply system comprising a switching valve provided in the branch piping, which communicates the rice washing equipment with one of the plurality of rice washing wastewater supply devices, and shuts off the piping to the remaining rice washing wastewater supply devices.

9. The device comprises the rice washing wastewater supply device according to any one of claims 1 to 7 and the mobile tank, A rice washing wastewater supply facility having an opening formed at the bottom of the aforementioned mobile tank for inserting and removing the forks of a forklift.

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