Chaff separation device

Abstract

To protect a chaff separation member in a chaff separation device from damage like wear without clogging.SOLUTION: A chaff separation device 100 includes: a chaff flow inlet 111 for introducing a chaff flow F1; a chaff separation member 120 which is positioned to block the chaff flow F1 introduced from the chaff flow inlet 111, and separates chaff M from the chaff flow F1 by allowing the air flow F2 to pass through while capturing the chaff M included in the chaff flow F1; an air outlet 112 for discharging the air flow F2 that has passed through the chaff separation member 120 to the outside; and a chaff outlet 113 for taking out the chaff M that was not able to pass through the chaff separation member 120 and escaped from the air flow F2 to the outside. Multiple protective members 130 to protect the chaff separation member 120 so as to prevent the chaff M included in the chaff flow F1 introduced from the chaff flow inlet 111 from strongly colliding with the chaff separation member 120 are provided in multi-stages along a surface on the chaff flow inlet 111 side in the chaff separation member 120.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a rice husk separating device that separates rice husks from a rice husk flow consisting of rice husks and an air flow that pressurizes the rice husks. [Background technology]

[0002] The husks of threshed rice are removed by a rice huller to become brown rice. The removed rice husks can be reused as fertilizer, feed, or bedding. For this reason, the rice husks discharged from the rice huller are transferred to a rice husk tank and stored there. The mainstream method of transferring the rice husks to the rice husk tank is air transfer, in which a transfer duct connects the area around the rice huller and the rice husk tank, and a blower sends air into the transfer duct to pressurize the rice husks. However, because the air flowing through the transfer duct is highly pressurized, if the rice husks flowing through the transfer duct are introduced directly into the rice husk tank, the rice husks will fly up in the rice husk tank. In addition, the rice husks contain fine particles such as dust, and these foreign objects will also be introduced into the rice husk tank.

[0003] For this reason, conventionally, a rice husk separator is interposed at the connection between the transfer duct and the rice husk tank, and the rice husk flow (a flow consisting of rice husks and the air flow that pressurizes them; the same applies below) is separated into rice husks and an air flow by the rice husk separator. The rice husks separated by the rice husk separator fall into the rice husk tank installed below the rice husk separator, and the air flow separated by the rice husk separator is sent to another location together with fine particle foreign matter. Examples of rice husk separators that have been proposed so far include the "rice husk recovery device 1" in Figure 1 of Patent Document 1 and the "rice husk collection section 1" in Figure 1 of Patent Document 2. [Prior art documents] [Patent documents]

[0004] [Patent Document 2] JP 2002-011360 A [Patent Document 1] JP 2015-093245 A Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, the conventional rice husk separating device has a structure in which a mesh-shaped rice husk separating member 120 is provided in a separation duct 110 having a rice husk flow inlet 111, an air outlet 112, and a rice husk outlet 113, as shown in FIG. 1 of the present application. The rice husk separating member 120 captures rice husks M while allowing air flow F to flow through the separation duct 110. 2 The rice husk flow F introduced into the separation duct 110 from the rice husk flow inlet 111 is a mesh-like member that can pass through. 1 collides with the rice husk separating member 120, and the rice husk flow F 1 Air flow F contained in 2 Only foreign matter in the form of small particles passes through it and is discharged from the air outlet 112. On the other hand, the rice husks M cannot pass through the rice husk separating member 120, and are deflected downward to be taken out from the rice husk outlet 113 and stored in the rice husk tank.

[0006] In the rice husk separator having such a structure, the rice husk flow F 1 Because the air collides with the rice husk separating member 120 with great force, the rice husk separating member 120 is susceptible to damage such as wear. If the wear is severe, holes may be formed in the rice husk separating member 120. The durability of the rice husk separating member 120 can be increased by reducing the size of the ventilation section (mesh) through which the airflow passes, but this may cause the ventilation section (mesh) to become clogged, making it impossible to separate the rice husks from the airflow.

[0007] The present invention has been made to solve the above-mentioned problems, and aims to protect the rice husk separating member in a rice husk separating device from damage such as wear without causing clogging. [Means for solving the problem]

[0008] The above issues are: A rice husk flow inlet for introducing a rice husk flow consisting of rice husks and an air flow for compressing the rice husks; a rice husk separating member arranged in a state of blocking the rice husk flow introduced from the rice husk flow inlet, and separating the rice husks from the rice husk flow by allowing an air flow to pass through while capturing the rice husks contained in the rice husk flow; an air outlet for discharging the air flow that has passed through the rice husk separating member to the outside; a rice husk outlet for removing rice husks that have not passed through the rice husk separating member and have strayed from the air flow to the outside; A rice husk separating device comprising: A plurality of protective members for protecting the rice husk separating member so that the rice husks contained in the rice husk flow introduced from the rice husk flow inlet do not collide with the rice husk separating member forcefully are provided in multiple stages along the surface of the rice husk separating member on the rice husk flow inlet side. A chaff separating device characterized by This is solved by providing

[0009] This makes it possible for the rice husk flow introduced from the rice husk flow inlet to collide with the protective member before colliding with the rice husk separating member, thereby weakening the momentum of the rice husks contained therein. The air flow can reach the rice husk separating member through the gap between the protective members of the adjacent stages. Even if the rice husks reach the rice husk separating member through this gap, the momentum of the rice husks has been weakened, so damage to the rice husk separating member can be reduced.

[0010] In the rice husk separating device of the present invention, it is preferable to arrange the multiple protective members so that the edges of the protective members of adjacent stages overlap each other when viewed from a direction parallel to the rice husk flow, which makes it possible to more reliably ensure that the rice husks contained in the rice husk flow hit the protective members before hitting the rice husk separating members.

[0011] In the rice husk separator of the present invention, each protective member is preferably L-shaped in cross section having a vertical plate portion that is approximately perpendicular to the rice husk flow and a horizontal plate portion that extends from the tip of the vertical plate portion toward the rice husk flow inlet, and rice husks can be stored in the inner corner portion formed by the vertical plate portion and the horizontal plate portion. This allows a portion (rice husk hopper) where rice husks are stored to be formed on the front side (the surface facing the rice husk flow inlet) of the vertical plate portion. Therefore, the rice husks contained in the rice husk flow collide with the rice husk hopper, not with the vertical plate portion of the protective member or the rice husk separating member behind it, and are redirected toward the rice husk outlet and taken out from the rice husk outlet. This effectively protects the rice husk separating member and the protective member from wear.

[0012] In the chaff separating device of the present invention, it is also preferable that the horizontal plate portion of each protective member is formed inclined toward the chaff outlet. This makes it easier for the chaff forming the chaff hopper to be replaced by new chaff (chaff that collide with the chaff hopper later), making it easier to maintain the chaff hopper in good condition. It also makes it easier for the chaff that collide with the chaff hopper and the chaff pushed out of the chaff hopper to move toward the chaff outlet. Effect of the Invention

[0013] As described above, the present invention makes it possible to protect the rice husk separating member in a rice husk separating device from damage such as wear without causing clogging. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a cross-sectional view illustrating a conventional rice husk separating device. [Diagram 2] FIG. 1 is a diagram showing an example of a rice husk transport facility using the rice husk separator of the present invention. [Diagram 3] 1 is a partially cutaway perspective view of a rice husk separating device according to the present invention. [Figure 4] 1 is a vertical cross-sectional view of the rice husk separating device of the present invention. [Diagram 5] 1 is a cross-sectional view of the rice husk separating device of the present invention taken along a horizontal plane. [Figure 6] 1 is an oblique view showing how multiple protective members are attached to a rice husk separating member. FIG. [Figure 7] 1 is a cross-sectional view of the periphery of a rice husk separating member in a rice husk separating device cut along a vertical plane, showing how rice husks are retained by a protective member. FIG. [Figure 8] 11A and 11B are diagrams showing another embodiment of a protective member in a rice husk separating apparatus. [Figure 9] 13 is a perspective view showing yet another embodiment of a protective member in a rice husk separating apparatus. FIG. [Figure 10] 10 is a cross-sectional view showing how rice husks are removed by the protective member of FIG. 9. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] The chaff separator of the present invention will be described in more detail with reference to the drawings. The configuration described below is merely a preferred embodiment, and the technical scope of the chaff separator of the present invention is not limited to the configuration described below. The chaff separator of the present invention can be modified as appropriate within the scope of the invention.

[0016] 1.Applications of rice husk separator 2 is a diagram showing an example of a rice husk transport facility using the rice husk separator 100 of the present invention. This transport facility is composed of a hopper 10, a blower 20, a transport duct 30, a stone remover 40, the rice husk separator 100, a rice husk tank 50, a rice husk crusher 60, an exhaust duct 70, and a foreign matter collector 80.

[0017] The hopper 10 is used to input rice husks M (rice husks separated from brown rice) sent out from a rice huller (not shown).

[0018] The blower 20 generates wind (air flow) for air-transporting the rice husks M put into the hopper 10 through the transfer duct 30. In this embodiment, the blower 20 is provided at the lower part of the hopper 10 (the most upstream part of the transfer duct 30).

[0019] The transfer duct 30 is for transferring the rice husks M to the vicinity of the rice husk tank 50. In the transfer duct 30, the rice husks M are transported by the air flow generated by the blower 20 along with the rice husk flow F. 1 Then they are transferred.

[0020] The stone remover 40 is for separating and removing relatively large foreign objects such as small stones mixed in the rice husks M. The stone remover 40 is a specific gravity type that separates foreign objects by utilizing differences in specific gravity. In this embodiment, the stone remover 40 is provided in the middle of the transfer duct 30.

[0021] The rice husk separator 100 separates the rice husk flow F transported through the transport duct 30. 1 , the rice husk M and the air flow F 2 The present invention relates to the rice husk separator 100. The rice husk separator 100 of the present invention can be suitably used in a rice husk transport facility as shown in Fig. 2. The specific configuration of the rice husk separator 100 will be described later.

[0022] The rice husk tank 50 is a rice husk separator 100 that separates the rice husk flow F 1 In this embodiment, the rice husk tank 50 is disposed below the rice husk separator 100. This allows the rice husks M that have fallen from the rice husk separator 100 to be stored in the rice husk tank 50 as they are.

[0023] The rice husk crusher 60 is for crushing the rice husks M stored in the rice husk tank 50 into powder. In this embodiment, the rice husk crusher 60 is provided at the bottom of the rice husk tank 50, and successively crushes the rice husks M taken out from the bottom of the rice husk tank 50. The crushed rice husks (rice husk powder) are reused as fertilizer, feed, bedding, etc.

[0024] The exhaust duct 70 is a rice husk flow F 1 Air flow F separated from 2 It is intended to send (exhaust) the heat to the outside air.

[0025] The foreign object collector 80 is configured to receive the air flow F 2 This collects fine particles such as dust contained in the exhaust duct 70. 2 In this embodiment, the foreign matter collector 80 is provided in the middle of the exhaust duct 70.

[0026] 2.Rice husk separator Fig. 3 is a partially broken perspective view of the rice husk separating device 100. Fig. 4 is a sectional view of the rice husk separating device 100 cut along a vertical plane. Fig. 5 is a sectional view of the rice husk separating device 100 cut along a horizontal plane. As shown in Figs. 3 to 5, the rice husk separating device 100 includes a separation duct 110, a rice husk separating member 120 provided within the separation duct 110, and a protective member 130 provided on the front side of the rice husk separating member 120 (the surface facing the rice husk flow inlet 111).

[0027] The separation duct 110 has a rice husk flow inlet 111, an air outlet 112, and a rice husk outlet 113. The rice husk flow inlet 111 is connected to the downstream end of the transfer duct 30 (FIG. 2), and the rice husk flow F transferred by the transfer duct 30 is 1 The air outlet 112 is connected to the upstream end of the exhaust duct 70 (FIG. 2) and introduces the rice husk flow F 1 Air flow F separated from 2 The rice husk outlet 113 is connected to the top of the rice husk tank 50 (FIG. 2) and delivers the rice husk flow F 1 This is the section where the separated rice husks M are taken out into the rice husk tank 50.

[0028] In this embodiment, the direction connecting the rice husk flow inlet 111 and the air outlet 112 is substantially horizontal and linear, and the rice husk flow F 1 Air flow F separated from 2 The rice husk outlet 113 is provided below the rice husk separating member 120, and the rice husk flow F1 The rice husks M that are separated and fall can be taken out as they are.

[0029] The rice husk separating member 120 separates the rice husk flow F flowing through the separation duct 110. 1 The rice husk separating member 120 is disposed in a state where it blocks the rice husk flow F 1 The air flow F 2 In this embodiment, a mesh member having many holes (air holes) smaller than the rice husks M is used as the rice husk separating member 120. The material of the rice husk separating member 120 (mesh member) is not particularly limited, but is usually a metal such as stainless steel.

[0030] As shown in FIG. 4, the rice husk separation member 120 blocks the inside of the separation duct 110, so that the rice husk flow F 1 The rice husks M contained in the air flow F cannot pass through the rice husk separating member 120. 2 The air flow F is guided to the rice husk outlet 113. 2 The fine particles such as dust pass through the rice husk separating member 120 through the vent holes and are discharged from the air outlet 112 to the outside of the separation duct 110. 1 A part of the air that forms the flow of the rice husks M flows toward the rice husk outlet 113, but the flow rate of the air is equal to the air flow F. 2 Therefore, the rice husks M taken out from the rice husk outlet 113 to the outside of the separation duct 110 do not fly up, but drop into the rice husk tank 50 and are stored there.

[0031] The rice husk separating member 120 (mesh member) may be flat, but in this embodiment, as shown in FIG. 5, the central part in the width direction is curved in an arc shape so as to be farther away from the rice husk flow inlet 111. This allows the rice husk flow F 1 The rice husks M separated from the rice husk separator 120 are collected in the center of the width direction of the rice husk separator 120 and are easily guided to the rice husk outlet 113 below. 1However, in this embodiment, as shown in FIG. 4, the rice husk separating member 120 is inclined so that its upper edge side approaches the rice husk flow inlet 111 and its lower edge side moves away from the rice husk flow inlet. 1 This makes it easier for the rice husks M separated from the rice husk discharge port 113 to be guided downward (toward the rice husk discharge port 113).

[0032] In this way, the rice husk separating member 120 separates the rice husk flow F 1 Blocks the air flow F 2 The rice husk M is separated by passing the rice husk flow F 1 When the rice husks M contained in the air flow F collide with the rice husk separating member 120 with great force, the rice husk separating member 120 is easily damaged by wear and the like. For this reason, as shown in FIG. 4, a plurality of protective members 130 are attached in multiple stages to the front side (the side facing the rice husk flow inlet 111) of the rice husk separating member 120, and these protective members 130 protect the rice husk separating member 120. 2 The air reaches the rice husk separating member 120 through the gaps between the adjacent protective members 130 and penetrates to the rear surface (the surface facing the air flow outlet 112) of the rice husk separating member 120.

[0033] Fig. 6 is a perspective view showing how a plurality of protective members 130 are attached to the rice husk separating member 120. Fig. 6(a) shows the state before the protective members 130 are attached, and Fig. 6(b) shows the state after the protective members 130 are attached. As already described, the rice husk separating member 120 has a shape curved in an arc, and each protective member 130 is also formed to be curved in an arc so as to follow the rice husk separating member 120. In addition, the rice husk separating member 120 has a shape inclined with respect to the vertical direction, and each protective member 130 is attached in multiple stages at a predetermined interval along the inclination direction of the rice husk separating member 120.

[0034] In this embodiment, the protective member 130 is attached in contact with the front side of the rice husk separating member 120, but the protective member 130 can also be provided at a location spaced a predetermined distance from the rice husk separating member 130 on the front side (the rice husk flow inlet 111 (Figure 5) side). In this case, each protective member 130 may be fixed to the separation duct 110 (Figure 5) or to a jig fixed to the separation duct 110, etc.

[0035] As shown in FIG. 6(a), each protective member 130 has an L-shaped cross section and includes a vertical plate portion 131 and a horizontal plate portion 132. The vertical plate portion 131 is disposed in such a manner that the rice husk flow F 1 (FIG. 3) from the leading edge (lower edge) of the vertical plate portion 131 toward the rice husk flow inlet 111 (FIG. 3) and lies in a substantially horizontal direction. By forming the protective member 130 in this manner, it becomes possible to retain the rice husks M in the inner corner formed by the vertical plate portion 131 and the horizontal plate portion 132.

[0036] Fig. 7 shows how the rice husks M are held in the protective member 130. Fig. 7 is a cross-sectional view taken along a vertical plane around the rice husk separating member 120 in the rice husk separating device 100. Fig. 7(a) shows the state before the rice husks M are held in the protective member 130, and Fig. 7(b) shows the state after the rice husks M have been held in the protective member 130.

[0037] As shown in FIG. 7(a), a rice husk flow F 1 When the water flows, the rice husk flow F 1 The rice husks M contained therein come into contact with the front surface of the vertical plate portion 131 of the protective member 130. In this embodiment, the protective members 130 are arranged so that the edges of the vertically adjacent protective members 130 overlap each other (see the cover α in FIG. 7(a)). Therefore, even when viewed from the rice husk flow inlet 111 (FIG. 4) side, the rice husk separating member 120 is hidden by the protective member 130 and is not exposed. Therefore, the rice husk flow F 1 The rice husks M contained therein come into contact with any of the protective members 130 (mainly the vertical plate portion 131).

[0038] Since there is a horizontal plate portion 132 in front of the vertical plate portion 131, the rice husks M that hit the vertical plate portion 131 are placed on the upper surface of the horizontal plate portion 132 as shown in FIG. 7(b) and are stored in the inner corner formed by the vertical plate portion 131 and the horizontal plate portion 132. 1 When sprayed, rice husk flow F 1 The rice husks M contained in the rice husk flow F collide with the rice husks M held in the protective member 130 and fall toward the rice husk outlet 113 (FIG. 4). 1 Some of the rice husks M contained in the protective member 130 are replaced with the rice husks M reserved in the protective member 130. The rice husks M pushed out from the protective member 130 also fall toward the rice husk outlet 113.

[0039] Rice husk style F 1 The rice husks M contained in the protective member 130 cannot reach the rice husk separating member 120 unless they pass through the gaps between the vertically adjacent protective members 130 while rising, but because the rice husks M have a certain weight, only a small portion of the rice husks M rise through the gaps against gravity. Even if some rice husks M pass through the gaps in the protective member 130 and reach the rice husk separating member 120, the rice husks M collide with the protective member 130 and the rice husks M stored therein, and thus strike the rice husk separating member 120 with their momentum weakened, so that the rice husks M are unlikely to suffer damage such as wear on the rice husk separating member 120. Furthermore, the rice husks M that reach the rice husk separating member 120 do not have enough momentum to enter the ventilation holes (holes) of the rice husk separating member 120, so that the rice husks M are unlikely to clog the rice husk separating member 120. Therefore, the rice husk separating member 120 can be used for a long period of time without maintenance.

[0040] The material of the protective member 130 is usually a metal such as stainless steel. In this way, when the protective member 130 is made of a hard material, wear of the protective member 130 (particularly wear of the vertical plate portion 131) can be a problem, but when the rice husks M are retained in the protective member 130, the rice husks M act as a cushion, making the protective member 130 less susceptible to damage such as wear.

[0041] The structure of the protective member 130 is not particularly limited as long as it can capture the rice husks M (the rice husks M cannot pass through). The protective member 130 (vertical plate portion 131 and horizontal plate portion 132) can be formed of a mesh material similar to the rice husk separating member 120, but in this embodiment, the protective member 130 is formed of a continuous plate material without openings or the like.

[0042] As described above, by providing the protective member 130 on the front side of the rice husk separating member 120, the rice husk separating member 120 can be protected from damage such as wear without clogging. 1 When the flow velocity of rice husk is fast, F 1 There is a risk that the rice husks M contained in the flow F may rise against gravity through the gaps between the adjacent protective members 130 and stick to the front surface of the rice husk separating member 120. In particular, if the rice husk transport equipment (FIG. 2) is large, the rice husk flow F 1 The flow rate is 70 to 80 m 3 Such problems may occur when the time required for the measurement is more than 1 / min.

[0043] In this embodiment, as shown in Fig. 4, the upper surface of the separation duct 110 is inclined with respect to the bottom surface, and as shown in Fig. 5, a pair of side surfaces of the separation duct 110 are inclined with respect to each other, so that the cross-sectional area of ​​the separation duct 110 gradually becomes wider as it approaches the rice husk flow inlet 111 to the rice husk separating member 120. As a result, the rice husk flow F 1 The flow rate of rice husk flow F is reduced. 1 This makes it possible to make it difficult for the rice husks M contained in the rice husk separating member 120 to stick to the rice husk separating member 120.

[0044] The side of the separation duct 110 downstream of the rice husk separating member 120 (air outlet 112 side) is inclined in the opposite direction to the side of the upstream side (rice husk flow inlet 111 side), so that the cross-sectional area of ​​the separation duct 110 narrows as it approaches the air outlet 112 from the rice husk separating member 120. 2 After increasing the flow rate of the air, the air flow F 2It is now possible to send out

[0045] 3. Protective member according to another embodiment A description will now be given of another embodiment of the protective member 130. FIG 8 is a diagram showing another embodiment of the protective member 130.

[0046] In the protective member 130 shown in FIG. 7, the vertical plate portion 131 and the horizontal plate portion 132 are approximately vertical, and the horizontal plate portion 132 is horizontal. In the protective member 130 shown in FIG. 8(a), the angle between the vertical plate portion 131 and the horizontal plate portion 132 is greater than 90°, and the horizontal plate portion 132 is inclined with respect to the horizontal plane (the inclination angle θ in FIG. 8(a)). 1 The horizontal plate portion 132 is inclined so that its leading edge (the edge on the rice husk flow inlet 111 (FIG. 4) side) is lower than its base edge (the edge on the air outlet 112 (FIG. 4) side).

[0047] By inclining the horizontal plate portion 132 in this manner, the rice husks M stored in the inner corner portion between the vertical plate portion 131 and the horizontal plate portion 132 can be easily dropped from the tip side of the horizontal plate portion 132. Therefore, the rice husks M forming the rice husk pool in the inner corner portion between the vertical plate portion 131 and the horizontal plate portion 132 can be easily dropped from the tip side of the horizontal plate portion 132. 1 This makes it easier for the rice husks M that collide with the rice husk hopper and the rice husks M that are pushed out of the rice husk hopper to move toward the rice husk outlet 113 (FIG. 4). When the horizontal plate portion 132 is inclined, the inclination angle θ 1 The magnitude of the inclination angle θ is not particularly limited, but is usually about 1 to 50°, and preferably 5 to 30°. In the example shown in FIG. 8(a), 1 is set to 10°.

[0048] In addition, in the protective member 130 shown in FIG. 7, the vertical plate portion 131 is in a vertical (up-down) state. However, in the protective member 130 shown in FIG. 8(b), the vertical plate portion 131 is inclined with respect to the vertical (the inclination angle θ in FIG. 8(b)). 2). The vertical plate portion 131 is inclined so that its lower edge is positioned further rearward (toward the air outlet 112 (FIG. 4)) than its upper edge. By inclining the vertical plate portion 131 in this manner, the rice husks M stored in the inner angle between the vertical plate portion 131 and the horizontal plate portion 132 can be made to fall more easily from the tip side of the horizontal plate portion 132. This not only makes it easier to maintain the rice husk pit in good condition, but also makes it easier for the rice husks M that collide with the rice husk pit and the rice husks M that are pushed out of the rice husk pit to head toward the rice husk outlet 113 (FIG. 4). When inclining the vertical plate portion 131, the inclination angle θ 2 The magnitude of the inclination angle θ is not particularly limited, but is usually set to about 1 to 30°. 2 is set to 10°.

[0049] Fig. 9 is a diagram showing yet another embodiment of the protective member 130. Fig. 9(a) shows a state before the protective member 130 is attached to the rice husk separating member 120, and Fig. 9(b) shows a state after the protective member 130 is attached to the rice husk separating member 120. Fig. 10 is a cross-sectional view showing how rice husks M are dropped by the protective member 130 of Fig. 9.

[0050] While the protective members 130 in Figs. 6 to 8 all have an L-shaped cross section having a vertical plate portion 131 and a horizontal plate portion 132, the protective member 130 in Fig. 9 has an I-shaped cross section and does not have a portion corresponding to the horizontal plate portion 132 in the protective members 130 in Figs. 6 to 8 (having only a portion corresponding to the vertical plate portion 131). The edges of the protective members 130 adjacent vertically overlap each other (see the cover α in Fig. 10(a)). Therefore, as shown in Fig. 10(b), the rice husk flow F 1 The rice husks M contained in the husks hit any of the protective members 130 (vertical plate portions 131) and fall to the lower side, and are mixed with the air flow F. 2 The chisel passes through the chaff separating member 120 .

[0051] 9 and 10 (protective member 130 having an I-shaped cross section) cannot hold the rice husks M like the protective member 130 having an L-shaped cross section (FIGS. 6 to 8), but can protect the rice husk separating member 120 with its vertical plate portion 131. The protective member 130 having an I-shaped cross section is more resistant to the air flow F than the protective member 130 having an L-shaped cross section. 2 This has the advantage of reducing the flow resistance. [Explanation of symbols]

[0052] 10 Hopper 20 Blower 30 Transport Duct 40 Stone remover 50 Rice husk tank 60 Rice husk crusher 70 Exhaust Duct 80 Foreign object collector 100 Rice husk separator 110 Separation duct 111 Rice husk flow inlet 112 Air outlet 113 Rice husk outlet 120 Rice husk separating member 130 Protective materials 131 Vertical plate section 132 Horizontal plate part M Rice husk F 1 Rice husk flow F 2 Air flow α Coverage θ 1 Incline angle of side plate θ 2 Inclination angle of vertical plate

Claims

1. A rice husk flow inlet for introducing a rice husk flow consisting of rice husks and an air flow for compressing the rice husks; a rice husk separating member arranged in a state of blocking the rice husk flow introduced from the rice husk flow inlet, and separating the rice husks from the rice husk flow by allowing an air flow to pass through while capturing the rice husks contained in the rice husk flow; an air outlet for discharging the air flow that has passed through the rice husk separating member to the outside; a rice husk outlet for removing rice husks that have not passed through the rice husk separating member and have strayed from the air flow to the outside; A rice husk separating device comprising: A plurality of protective members for protecting the rice husk separating member so that the rice husks contained in the rice husk flow introduced from the rice husk flow inlet do not collide with the rice husk separating member forcefully are provided in multiple stages along the surface of the rice husk separating member on the rice husk flow inlet side. A rice husk separating device characterized by the above.

2. 3. The rice husk separating device according to claim 2, wherein the plurality of protective members are arranged such that edges of the protective members of adjacent stages overlap each other when the protective members are viewed from a direction parallel to the rice husk flow.

3. A rice husk separation device as described in claim 2, wherein each protective member has an L-shaped cross-section having a vertical plate portion that is approximately perpendicular to the rice husk flow and a horizontal plate portion that extends from the tip of the vertical plate portion toward the rice husk flow inlet side, and is capable of retaining rice husks in the inner corner formed by the vertical plate portion and the horizontal plate portion.

4. 4. The rice husk separating device according to claim 3, wherein the horizontal plate portions of each of the protective members are formed inclined toward the rice husk outlet side.

Images