Rice husk conveying device and rice husk conveying method

Abstract

The present invention provides a rice husk conveying device and method that eliminates collisions between rice husks and the wind turbine or casing within the blower, thereby preventing wear and tear on the wind turbine and casing. [Solution] The rice husk transport case 10 is provided with an air outlet 15, a rice husk inlet 9, and a rice husk outlet 16 located opposite the air outlet 15. The air blower 1 is used to create a high-pressure environment inside the rice husk transport case 10 by supplying air to it. A rice husk suction pipe 12 is provided on the side, which has a rice husk suction port 12a for sucking in rice husks 11 and connects the air outlet 15 and the rice husk outlet 16. The rice husks 11 that are brought into the rice husk transport case 10 are sucked in by the rice husk suction pipe 12 and discharged from the rice husk outlet 16. In this case, by attaching a pair of inclined plates 13A and 13B to the rice husk suction pipe 12, the rice husks 11 can be efficiently collected in the rice husk suction pipe 12, improving the conveying capacity.

Description

Technical Field

[0001] The present invention relates to a rice husk conveying device and a rice husk conveying method, and particularly relates to a rice husk conveying device and a rice husk conveying method that eliminate the intense collision between rice husks and a windmill or a casing in a blower, which was inevitable in conventional conveying devices, and prevent the wear of these windmills and casings.

Background Art

[0002] Currently, as shown in Patent Document 1, a rice husk conveying device is in practical use. This rice husk conveying device generally consists of a blower, a loading duct for supplying rice husks to the blower, and a discharge duct for discharging the rice husks discharged from the blower.

[0003] Therefore, the blower used in the conventional rice husk conveying device will be described with reference to FIG. 2. FIG. 2 is a cut side view for explaining the basic configuration of a blower, which is the main configuration of a conventional rice husk conveying device. As shown in FIG. 2, the blower 30 is configured by accommodating a windmill 31 having a plurality of (four in the illustrated example) blades 31A to 31D in a fan casing 32.

[0004] With this configuration, the conventional blower 30 generates wind force by rotating the windmill 31 at high speed around the rotation axis 34, sucks rice husks from a loading duct (not shown), and sends the rice husks to the discharge duct 33 to convey the rice husks.

[0005]

Patent Document 1

Disclosure of the Invention

Problems to be Solved by the Invention

[0006] By the way, with conventional blowers, when large quantities of rice husks are being sent, the rice husks collide violently with the fan casing and wind turbine blades at high speed, causing damage to the fan casing and wind turbine blades. In particular, because rice husks contain hard silicon, they severely damage the blades of wind turbines, requiring frequent replacement of the turbines.

[0007] As a countermeasure, the invention described in Patent Document 1 discloses a technique that solves the problem by lining the inner surface of the fan casing and the impeller blades with a rubber sheet as a wear-resistant material. In the invention described in Patent Document 1, while the durability of the fan casing and blades is certainly improved, the rice husks still repeatedly collide violently with the rubber sheet, and the rubber sheet, which is assumed to be weaker in strength than the fan casing and blades, wears out quickly. It is therefore assumed that the frequency of replacing the rubber sheet will actually increase more than the frequency of replacing the fan casing and blades. Furthermore, it is easy to foresee that the workload of lining the inner surface of the fan casing with a rubber sheet each time it is replaced would be excessive. In other words, unless the collision between rice husks and the wind turbine blades or casings is eliminated, a fundamental solution cannot be achieved.

[0008] The present invention aims to solve the above-mentioned conventional problems and provide a rice husk conveying device and method that eliminates collisions between rice husks and wind turbines or casings inside the blower, which were unavoidable in conventional conveying devices, thereby preventing wear and tear on these wind turbines and casings. [Means for solving the problem]

[0009] To solve the above-mentioned conventional problems, the rice husk conveying device of the present invention, as described in claim 1, comprises a rice husk conveying case provided with an air outlet, a rice husk inlet, and a rice husk outlet located opposite the air outlet; a blower that creates a high-pressure state inside the rice husk conveying case by supplying air to it; and a rice husk suction pipe formed on the side for sucking in rice husks, which connects the air outlet and the rice husk outlet. The rice husks that are brought into the rice husk conveying case are sucked in by the rice husk suction pipe and discharged from the rice husk outlet.

[0010] The rice husk conveying method described in claim 2 is a rice husk conveying device described in claim 1, comprising the steps of: carrying rice husks into a rice husk conveying case from a rice husk inlet provided in the rice husk conveying case; creating a high-pressure state inside the rice husk conveying case by blowing air into the rice husk conveying case from an air outlet provided in the rice husk conveying case using a blower; sucking up the rice husks with a rice husk suction pipe; and transporting the rice husks inside the rice husk suction pipe to the outside from a rice husk discharge port provided in the rice husk conveying case. [Effects of the Invention]

[0011] The rice husk conveying device and rice husk conveying method of the present invention have the following excellent effects because they are configured as described in claims 1 and 2. (1) The blower is used only to blow air into the rice husk transport case, and the rice husks do not pass through the inside of the blower. Therefore, they do not collide violently with the fan casing or wind turbine blades, thus solving the problem of the casing and blades being damaged and punctured in a short time, requiring frequent replacement. (2) Therefore, as in Patent Document 1, it is not necessary to frequently line the inner surface of the casing or the blades with rubber sheets as wear-resistant material, and the workload can be greatly reduced. (3) Furthermore, since there are no areas where the rice husks collide violently, the lifespan of the rice husk conveying device can be significantly extended. [Brief explanation of the drawing]

[0012] [Figure 1]These figures illustrate the rice husk conveying device and rice husk conveying method of the present invention, with figure(a) being a cut front view and figure(b) being a side view. [Figure 2] This is a cross-section side view illustrating the basic configuration of the air blower, which is the main component of a conventional rice husk conveying device. [Modes for carrying out the invention]

[0013] One embodiment of the rice husk conveying device and rice husk conveying method of the present invention: Hereinafter, an embodiment of the rice husk conveying device and rice husk conveying method of the present invention will be described with reference to Figure 1. Figure 1 is a diagram illustrating the rice husk conveying device and rice husk conveying method of this embodiment, where Figure (a) is a cross-section front view and Figure (b) is a side view.

[0014] The components necessary to implement the rice husk conveying device 20 and rice husk conveying method of this embodiment are, as shown in Figures 1(a) and (b), a rice husk conveying case 10, a blower 1 that creates a high-pressure state inside the rice husk conveying case 10 by supplying air to it, and a rice husk suction pipe 12 having multiple suction ports 12a formed on its side for sucking in rice husks 11.

[0015] The details of each component are explained below using Figures 1(a) and 1(b). First, the rice husk transport case 10 is enclosed on all four sides (front, back, left, and right) by a casing, and the bottom and top surfaces are attached to it, creating a sealed space. Regarding the airtightness of the rice husk transport case 10, it is desirable that it be highly airtight, but if the air blower 1 has sufficient airflow to maintain a sufficiently high pressure inside, a certain amount of air leakage is not particularly problematic.

[0016] A rice husk inlet 9 is formed near the upper surface of the rice husk transport case 10, and an air outlet 15 is formed near the lower surface, with a rice husk discharge outlet 16 opposite it. Also, in the middle part of the rice husk conveying case 10, a pair of inclined plates 13A and 13B attached to the rice husk suction pipe 12 are arranged. The air outlet 15 and the rice husk discharge port 16 are communicated with each other by the rice husk suction pipe 12. Also, a rice husk inlet duct 14 is fixedly arranged at the rice husk inlet 9, and a screw conveyor 8 is attached in the rice husk inlet duct 14. For the blower 1, a conventional blower 1 is used and is fixed to the air outlet 15 by a mounting bracket 4.

[0017] With the above configuration, the basic operations of the rice husk conveying device 20 and the rice husk conveying method of the present embodiment will be described using FIGS. 1(a) and (b). First, the screw conveyor 8 in the rice husk conveying duct 14 throws the rice husks 11 into the rice husk conveying case 10 from the rice husk inlet 9, and the rice husks 11 are collected near the rice husk suction pipe 12 of the rice husk conveying case 10 by the pair of inclined plates 13A and 13B. Note that although the inside of the rice husk conveying case 10 will be in a high-pressure state as described later, the rice husks 11 are forcibly fed by the screw conveyor 8, so the rice husks 11 will not run backward in the rice husk inlet duct 14. Next, the blower 1 is powered on, and air is vigorously blown into the rice husk conveying case 10, so that the inside of the rice husk conveying case 10 becomes a high-pressure state. Also, air vigorously jets out from the plurality of rice husk suction ports 12a of the rice husk suction pipe 12, so that the air and the rice husks 11 are in a mixed state.

[0018] If the blower 1 continues to blow air into the rice husk conveying case 10, the inside of the rice husk conveying case 10 will become a high-pressure state, and the supply and discharge of air will reach an equilibrium state, and the jet of air from the rice husk suction ports 12a of the rice husk suction pipe 12 will weaken. On the other hand, a strong air current is generated in the rice husk suction pipe 12 from the air outlet 15 to the rice husk discharge port 16, and due to the suction effect of this air current, the rice husks 11 in a mixed state with air are sucked in from the rice husk suction ports 12a. The rice husks 11 that are sucked in are carried by the strong airflow of the rice husk suction pipe 12 and are forcefully discharged from the rice husk discharge port 16 into the outside environment under atmospheric pressure. As a result, the rice husks 11 are transported from the rice husk inlet 9 through the rice husk discharge port 16 to the outside.

[0019] In other words, in the rice husk conveying device 20 and rice husk conveying method of this embodiment, unlike conventional rice husk conveying devices, the rice husks 11 do not pass through the air blower 1. Therefore, they do not collide violently with the fan casing or wind turbine blades, and these do not wear out, so there is no need to replace them. Furthermore, since there is no need to line the inside of the fan casing or the blades with wear-resistant material, the excessive workload of replacing these parts is avoided. In the rice husk suction pipe 12, which is connected to the rice husk discharge port 16 formed opposite the air outlet 15, the path of the rice husks 11 is formed in a nearly straight line, so even if the rice husks 11 come into contact with the side of the rice husk suction pipe 12, they do not collide violently. Therefore, since there are no parts damaged by the rice husks 11, the lifespan of the rice husk conveying device 20 itself can be significantly extended.

[0020] The rice husk conveying device and rice husk conveying method of the present invention are not limited to the embodiments described above. In the above embodiment, an example was described in which a screw conveyor was installed inside the rice husk input duct. In this case, it is easier to control the amount of rice husks supplied, and there is an advantage in that backflow of rice husks from the high-pressure rice husk transport case is prevented. However, since it is possible to supply the rice husks by their own weight, or by other means such as feeding the rice husks while preventing backflow with some kind of pressure, a screw conveyor is not necessarily an essential component of the present invention. Furthermore, although the explanation described an example using a blower, as long as the inside of the rice husk transport case can be kept under high pressure, it is within the scope of the present invention even if this is replaced with another type of blower. The example described involved attaching a pair of inclined plates to the rice husk suction pipe. While this allows for efficient collection of rice husks into the suction pipe, the rice husks naturally accumulate in the rice husk transport case and are drawn into the suction pipe, so this is not necessarily an essential component. [Industrial applicability]

[0021] This invention represents a leap in technological concept by fundamentally eliminating the violent collision between rice husks and the fan casing or blades, and can significantly extend the lifespan of rice husk conveying equipment, thus having great industrial potential. [Explanation of Symbols]

[0022] 1: Blower (air blower) 9: Rice husk entrance 10: Rice husk transport case 12: Rice husk suction pipe 12a: Rice husk intake 15: Air outlet 16:Rice husk outlet 20: Rice husk conveying device

Claims

1. A rice husk transport case is provided with an air outlet, a rice husk inlet, and a rice husk discharge port located opposite the air outlet, A blower that blows air into the aforementioned rice husk transport case, thereby creating a high-pressure environment inside the rice husk transport case, A rice husk intake port is formed on the side for sucking up rice husks, and a rice husk intake pipe connects the air outlet and the rice husk discharge port, A rice husk conveying device comprising the rice husks conveyed into the rice husk conveying case, characterized in that the rice husks are sucked up by the rice husk suction pipe and discharged from the rice husk discharge port.

2. In the rice husk conveying device according to claim 1, The process involves transporting the rice husks into the rice husk transport case from the rice husk entrance provided in the rice husk transport case, The process involves using the blower to supply air to the rice husk transport case through an air outlet provided in the rice husk transport case, thereby creating a high-pressure environment inside the rice husk transport case. The process involves sucking up the rice husks using the aforementioned rice husk suction pipe, The process involves transporting the rice husks from the rice husk suction pipe to the outside through the rice husk discharge port provided in the rice husk transport case, A method for conveying rice husks, characterized by comprising the following:

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