Air transport vehicle

Abstract

We provide air transport vehicles with reduced manufacturing costs. [Solution] The system comprises a tank 30 for containing powdered material, a conveyor 31 provided below the tank 30 for transporting the powdered material moving from the tank 30 from the front to the rear of the vehicle, a conveyor enclosure 34 covering the rear end of the conveyor 31, a vent section 343 provided in the conveyor enclosure 34 that communicates with the outside of the conveyor enclosure 34 so that air present inside the conveyor enclosure 34 can be discharged to the outside of the conveyor enclosure 34, an air supply means for generating an airflow, and a multiphase mixer 370 for mixing the powdered material supplied from the conveyor 31 with the airflow from the air supply means for transport.

Description

Technical Field

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[0001] The present invention relates to an air conveyance vehicle that conveys powder and granular materials by air.

Background Art

[0002] An air conveyance vehicle that stores powder and granular materials inside and transports them to a destination is known (Patent Document 1). The air conveyance vehicle includes a tank fixed to a vehicle body frame and capable of storing powder and granular materials inside, a screw conveyor connected to the lower part of the tank, and a rotary valve that discharges the powder and granular materials discharged by the screw conveyor into a discharge pipe via a mixer. Further, the air conveyance vehicle includes a control device capable of controlling the operation of the screw conveyor and the rotary valve, and an air conveyance device capable of assisting the flow of the powder and granular materials discharged from the rotary valve through the mixer and into the discharge pipe with air pressure. That is, in the air conveyance vehicle, the powder and granular materials are transferred from the tank to a chute by a screw conveyor and dropped, and the powder and granular materials are conveyed by air using a mixer arranged under the chute.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above air conveyance vehicle, the air used for conveyance may leak out to the chute, causing the upper part of the chute (the end of the conveyor) to be at high pressure. Therefore, the upper part of the chute must have a strength to withstand high pressure, which may increase the manufacturing cost of the air conveyance vehicle.

[0005] An object of the present invention is to provide an air conveyance vehicle with suppressed manufacturing costs.

Means for Solving the Problems

[0006] The air transport vehicle of the present invention comprises a tank for containing powders and granules, a conveyor provided below the tank for transporting the powders and granules moving from the tank from the front to the rear of the vehicle, a conveyor enclosure covering the rear end of the conveyor, a vent provided in the conveyor enclosure that communicates with the outside so that air present inside the conveyor enclosure can be discharged to the outside of the conveyor enclosure, an air supply means for generating an airflow, and a multiphase mixer for mixing the powders and granules supplied from the conveyor with the airflow from the air supply means for transport.

[0007] With this configuration, the vent section can reduce the air pressure inside the conveyor enclosure, eliminating the need for high pressure resistance in the components of the conveyor enclosure and thus suppressing cost increases.

[0008] Furthermore, in the air transport vehicle, the conveyor may be a belt conveyor, and the vent may be positioned so as not to come into contact with the powder or granular material moving inside the conveyor enclosure.

[0009] This configuration makes it possible to prevent damage to components (such as filters) in the vent section due to collisions with powder or granular material.

[0010] Furthermore, in the air transport vehicle, at least a portion of the vent section may be provided above the uppermost position of the belt of the conveyor.

[0011] This configuration makes it possible to prevent damage to components (such as filters) in the vent section due to collisions with powder or granular material.

[0012] Furthermore, in the air transport vehicle, at least a portion of the vent section may be located above the discharge port from which the powder is removed in the storage chamber where the powder is stored in the tank.

[0013] This configuration makes it possible to prevent damage to components (such as filters) in the vent section due to collisions with powder or granular material.

[0014] Furthermore, in the air transport vehicle, at least a portion of the vent section may be positioned so as not to intersect with the parabola traced by the powder or granules falling from the upper surface of the conveyor belt.

[0015] This configuration makes it possible to prevent damage to components (such as filters) in the vent section due to collisions with powder or granular material.

[0016] Furthermore, in the air transport vehicle, the vent portion may be provided on the rear wall portion of the conveyor enclosure.

[0017] This configuration makes it possible to prevent damage to components (such as filters) in the vent section due to collisions with powder or granular material.

[0018] Furthermore, in the air transport vehicle, the conveyor may be a screw conveyor, and the conveyor enclosure may be a screw casing provided to surround the screws of the conveyor.

[0019] With this configuration, even in an air-powered transport vehicle using a screw conveyor, the air pressure can be reduced at the vent section. [Effects of the Invention]

[0020] According to the present invention, it is possible to provide an air transport vehicle with reduced manufacturing costs. [Brief explanation of the drawing]

[0021] [Figure 1] Figure 1 is a side view of a special-purpose vehicle according to one embodiment of the present invention. [Figure 2] Figure 2 is a plan view of a special-purpose vehicle according to the same embodiment. [Figure 3] Figure 3 is a side view of the special-purpose vehicle according to the same embodiment. [Figure 4] Figure 4 is a plan view of the vehicle of the special equipment vehicle according to this embodiment. [Figure 5] Figure 5 is an enlarged view of the longitudinal cross-section side of the special equipment vehicle according to this embodiment. [Figure 6] Figure 6 is an explanatory view of the first mounted object of the special equipment vehicle according to this embodiment, and is an explanatory view of the state of the first mounted object seen from the rearward side. [Figure 7] Figure 7 is an explanatory view of the tank fairing part of the special equipment vehicle according to this embodiment. [Figure 8] Figure 8 is an explanatory view of the transport device of the special equipment vehicle according to this embodiment. [Figure 9] Figure 9 is an explanatory view of the second mounted object of the special equipment vehicle according to this embodiment. [Figure 10] Figure 10 is an explanatory view of the vent part of the special equipment vehicle according to this embodiment. [Figure 11] Figure 11 is an explanatory view of the discharge port of the special equipment vehicle according to this embodiment. [Figure 12] Figure 12 is an enlarged view of the longitudinal cross-section side of the special equipment vehicle according to the modified example.

Embodiments for Carrying out the Invention

[0022] Hereinafter, a special equipment vehicle according to an embodiment of the present invention will be described with reference to the accompanying drawings. <00 extraordinar000112>

[0023] As shown in FIGS. 1 and 2, the special equipment vehicle 1 according to this embodiment includes a vehicle 2 and a mounted object 3 mounted on the vehicle 2. Specifically, this special equipment vehicle 1 is an air conveyance vehicle.

[0024] In the following description, the direction corresponding to the front and rear of the special equipment vehicle 1 is referred to as the front-rear direction, the direction corresponding to the width of the special equipment vehicle 1 is referred to as the width direction, and the direction corresponding to the up and down of the special equipment vehicle 1 (the direction orthogonal to the front-rear direction and the width direction) is referred to as the up-down direction. Also, the direction facing forward in the front-rear direction (the traveling direction of the special equipment vehicle 1) is referred to as the front direction, and the direction facing backward in the front-rear direction is referred to as the rear direction. <0000 extraordinar000es000118>

[0025] As shown in Figures 3 and 4, vehicle 2 has a driver's cab 20 and a chassis frame 21 positioned rearward from the driver's cab 20.

[0026] As shown in Figure 4, the chassis frame 21 has a plurality of main frames 210 extending rearward from the driver's cab 20, and a plurality of cross members 211 extending along the width direction and fixed to each of the plurality of main frames 210.

[0027] Multiple mainframes 210 are arranged in the lateral direction and are spaced apart from each other in the lateral direction. Furthermore, the multiple mainframes 210 are parallel to each other. The chassis frame 21 of this embodiment has two mainframes 210.

[0028] Multiple cross members 211 are arranged in the front-to-back direction and are spaced apart from each other in the front-to-back direction. Furthermore, multiple cross members 211 are parallel to each other. The chassis frame 21 of this embodiment has three cross members 211.

[0029] The bodywork 3 of this embodiment includes a first bodywork B1 arranged in the rearward direction relative to the driver's cab 20, and a second bodywork B2 arranged in the rearward direction relative to the first bodywork B1 (see Figures 1 and 2).

[0030] As shown in Figure 5, the first structure B1 includes a tank 30 capable of accommodating transported goods, and a transport device 31 for transporting the goods contained in the tank 30 to the outside of the tank 30 (specifically, to a chute 35, which will be described later).

[0031] The transported material contained inside the tank 30 consists of multiple (many) fluids, such as wood pellets, wood chips, or powder obtained by crushing wood, and is fluid.

[0032] As shown in Figure 6, the tank 30 includes a tank holding section 300 for temporarily holding the transported material, a tank guide section 301 for guiding the transported material placed in the tank holding section 300 to the transport device 31, a tank flow straightening section 302 (see Figure 7) for regulating the flow of the transported material placed in the tank holding section 300, and a tank erection section 303 erected on the chassis frame 21. The tank 30 also has a discharge port 304 from which the powdered material is removed.

[0033] The tank holding section 300 constitutes the upper end side of the tank 30. The tank holding section 300 also functions as a storage chamber for accommodating powders and granules in the tank 30. In this embodiment, the tank holding section 300 has an upper wall section 3000, a pair of side wall sections 3001 facing each other in the width direction, a front surface 3003 (see Figure 7), and a rear surface 3004.

[0034] The upper wall portion 3000 of the tank holding portion 300 has a vertically penetrating opening 3005 for loading. The upper wall portion 3000 of the tank holding portion 300 is also fitted with an opening / closing door 3006 that can open and close the opening 3005. A handle 3007 is provided on the door 3006, which allows the door 3006 to be opened and closed manually.

[0035] The tank guide section 301 is composed of a pair of inclined sections 3010 that are spaced apart in the lateral direction.

[0036] Each of the pair of inclined sections 3010 is plate-shaped. Furthermore, each of the pair of inclined sections 3010 is inclined such that its inner end, which is positioned inward in the lateral direction, is located lower than its outer end, which is positioned outward in the lateral direction. Therefore, the inner surfaces of each of the pair of inclined sections 3010 (the inner surfaces facing the tank holding section 300) are also inclined such that their inner ends, which are positioned inward in the lateral direction, are located lower than their outer ends, which are positioned outward in the lateral direction. In addition, each of the pair of inclined sections 3010 is fixed so that its outer end is in contact with the side wall section 3001 without any gaps.

[0037] The distance between the pair of inclined sections 3010 gradually narrows as it extends downwards. Therefore, the tank 30 is formed such that the width at its lower end is smaller than the width at its upper end, and the width at the lower end of the tank guide section 301 (i.e., the distance between the lower ends of the pair of inclined sections 3010) is smaller than the maximum width of the tank holding section 300. Note that width refers to the dimension in the lateral direction.

[0038] Furthermore, an opening region 3011, which is open in the vertical direction, is formed between the pair of inclined sections 3010, and this opening region 3011 extends straight along the front-rear direction. Thus, an opening region 3011 is formed at the lower end of the tank 30, penetrating the tank 30 in the vertical direction, both inside and outside the tank 30. The position of the end of the opening region 3011 in the front direction is determined by the position of the lower end of the slope that is continuous with the lower end of the front surface 3003, the position of the end of the opening region 3011 in the rear direction is determined by the position of the rear surface 3004, and the position of the opening region 3011 in the lateral direction is determined by the position of the lower end of the inclined section 3010 of the tank guide section 301. In addition, the opening region 3011 is in communication with the space located above the transport device 31.

[0039] The discharge port 304 is located at the lower center end of the rear surface 3004 of the tank holding section 300. The discharge port 304 also communicates with the space located above the transport device 31.

[0040] As shown in Figure 7, the tank flow straightening section 302 has a longitudinal flow straightening section 3020 extending along the front-rear direction and a transverse flow straightening section 3021 extending along the width direction.

[0041] The vertical flow straightening section 3020 is positioned above the opening region 3011 formed between the pair of inclined sections 3010. One end of the vertical flow straightening section 3020 in the longitudinal direction is fixed to the front surface 3003 of the tank holding section 300, and the other end of the vertical flow straightening section 3020 in the longitudinal direction is fixed to the back surface 3004. The vertical flow straightening section 3020 is formed in a curved shape. More specifically, the vertical flow straightening section 3020 is inclined so as to gradually slope downward from the central part in the lateral direction towards the outer end in the lateral direction.

[0042] Furthermore, the lower end of the vertical flow straightening section 3020 is positioned away from the pair of inclined sections 3010 in the upward direction. As a result, a region through which the transported material can pass is formed between the vertical flow straightening section 3020 and the pair of inclined sections 3010.

[0043] The lateral flow straightening section 3021 is positioned at an upward distance from the longitudinal flow straightening section 3020. One end of the lateral flow straightening section 3021 in the longitudinal direction is fixed to one inclined section 3010, and the other end of the lateral flow straightening section 3021 in the longitudinal direction is fixed to the other inclined section 3010. The lateral flow straightening section 3021 is formed in a curved shape. More specifically, the lateral flow straightening section 3021 is inclined so that it gradually slopes downward from the central part in the front-rear direction towards the outer end in the front-rear direction.

[0044] As shown in Figure 6, the tank mounting section 303 has a pair of vertical wall sections 3030 that extend downward from the lower ends of different inclined sections 3010. The pair of vertical wall sections 3030 are positioned far apart from each other in the lateral direction. Therefore, a space is formed between the pair of vertical wall sections 3030.

[0045] As shown in Figure 8, the transport device 31 is installed at the bottom of the tank 30 (see Figure 5) and is a conveyor that moves powder and granular material from the tank 30 from the front of the vehicle to the rear of the vehicle. In this embodiment, the transport device 31 is a belt conveyor. Specifically, the transport device 31 has a transport belt section 310, a transport drive section 311 that rotates the belt, and a transport base section 312 (see Figure 6) that is erected on the cross member 211 and to which the belt and drive section are attached.

[0046] The conveyor belt section 310 is an endless annular and strip-shaped. The conveyor belt section 310 extends along the front-rear direction and is positioned between a pair of vertical wall sections 3030. Therefore, the conveyor belt section 310 is positioned inward from the pair of inclined sections 3010 in the lateral direction. Furthermore, the conveyor belt section 310 is positioned at a downward distance from the vertical flow straightening section 3020.

[0047] Furthermore, the rear end of the transport belt section 310 extends to the outside of the tank 30 from the opening on the rear side 3004 of the tank 30 and is located inside the second mounting structure B2 (specifically, inside the housing section 33, which will be described later).

[0048] The transport drive unit 311 includes a pair of rollers 3110 arranged at intervals in the front-rear direction, and a drive source 3111 that rotates the pair of rollers 3110 (see Figure 8).

[0049] The pair of rollers 3110 are configured to rotate around a rotation axis that extends along the width direction. One of the rollers 3110 is located inside the tank 30, and the other roller 3110 is located inside the housing 33.

[0050] As shown in Figure 6, the transport base section 312 has a pair of base wall sections 3120 that extend along the front-rear direction and are erected on the cross member 211. The pair of base wall sections 3120 face each other, separated in the lateral direction. The rear ends of the pair of base wall sections 3120 extend beyond the tank 30 through the opening of the tank 30 and are located inside the cover 34, which will be described later. The rotation axes of the pair of rollers 3110 are attached to the pair of base wall sections 3120.

[0051] As shown in Figure 9, the second mounting structure B2 includes a housing section 33 arranged in a line on the rear side of the tank 30, a cover 34, a chute 35 located inside the housing section 33 into which the transport material (powder and granular material) transported out of the tank 30 by the transport device 31 is fed, a transport device 36 that sends out the transport material that has passed through the chute 35, and a transport device 37 that transports the transport material sent out from the transport device 36 to a location separate from the special vehicle 1.

[0052] The housing section 33 is positioned away from the tank 30 in the rearward direction.

[0053] The cover 34 functions as a conveyor enclosure that covers the rear end of the transport device 31 (conveyor). In this embodiment, the cover 34 has an upper wall 340 which is the upper wall portion, a rear wall 341 which is the rear wall portion, and a side wall 342 which is the lateral wall portion. The cover 34 also has a vent portion 343 provided in any of the wall portions 340, 341, or 342.

[0054] The upper wall 340 extends in the front-to-back direction and also in the width direction. The rear wall 341 extends in the width direction and also in the vertical direction. The side wall 342 extends in the front-to-back direction and also in the vertical direction. In this embodiment, the wall portions 340, 341, and 342 are all flat plates.

[0055] A space is formed in the chute 35 that penetrates vertically. The upper wall 340 of the cover 34 is positioned above the space formed in the chute 35. In this embodiment, the upper end of the chute 35 is connected to the lower end of the cover 34 by bolts (not shown).

[0056] The dispensing device 36 is a so-called rotary valve. Therefore, as shown in Figure 10, the dispensing device 36 has an input section 360 into which the transported material (powder and granules) is fed through the chute 35, a valve case 361 into which the transported material flows from the input section 360, a valve body 362 located inside the valve case 361, a discharge section 363 that discharges the transported material sent out from the valve case 361 by the valve body 362 to the outside of the dispensing device 36, and a rotary drive unit 364 that rotates the valve body 362.

[0057] The input section 360 is tapered at the bottom than at the top. The valve case 361 is joined to the lower end of the chute 35 via a sealing member (not shown). The valve body 362 has a shaft fixing section (not shown) to which a rotating shaft (a drive shaft described later) extending in the front-rear direction is fixed, and a plurality of vane sections 3620 extending outward from the shaft fixing section along the radial direction of the rotating shaft.

[0058] As shown in Figure 9, the rotary drive unit 364 includes a drive shaft 3640 which is the rotation center of the valve body 362, and a drive source 3641 which rotates the drive shaft 3640.

[0059] The drive shaft 3640 extends along the front-rear direction and is fixed to the shaft fixing portion of the valve body 362.

[0060] The drive source 3641 is positioned away from the valve case 361 in the rearward direction. Therefore, the rotary drive unit 364 and the valve case 361 are aligned in the front-to-back direction.

[0061] The transfer device 37 is configured to transfer the material (powder or granules) using air.

[0062] As shown in Figure 9, the transfer device 37 includes a multiphase unit 370 configured to receive the transported material discharged from the discharge unit 363 and the air used for transfer, and an air supply means (not shown) for supplying air to the multiphase unit 370.

[0063] The multiphase mixer 370 mixes the powder and granular material supplied from the conveying device 31 with the airflow from the transfer device 37 for conveying purposes. In this embodiment, the multiphase mixer 370 includes a material supply section 3700 to which the material discharged from the discharge section 363 is supplied, and a flow section 3701 to which air is supplied from an air supply means and the material (powder and granular material) and air flow in a mixed state. The air supply means is, for example, a blower, specifically a Roots blower.

[0064] The material supply unit 3700 is attached to the discharge unit 363. An air supply means is connected to the air supply unit. The distribution unit 3701 is connected to the material supply unit 3700 and the air supply unit. In addition, a transfer unit (not shown) connected to the destination of the transported material can be connected to the distribution unit 3701.

[0065] In the cover 34, the vent section 343 communicates with the outside of the cover 34 so that air present inside the cover 34 can be discharged to the outside of the cover 34. As shown in Figure 10, the vent section 343 has an opening 344 provided in one of the wall sections 340, 341, or 342 of the cover 34, and a filter 345 such as a bag filter installed inside the opening 344.

[0066] In this embodiment, the opening 344 is rectangular, but it may be a polygon, elliptical, circular, or other shape. The filter 345 is made of fibers, such as paper, resin, or cloth. The filter 345 also has a frame, which is attached to the cover 34 using fastening members. The filter 345 can be any sheet or plate with pores finer than those of the conveyed material or the dust generated by its damage, and may be made of metal such as steel plate, in addition to fibers.

[0067] According to the special-purpose vehicle 1 described above, the vent section 343 allows air to be discharged to the outside of the cover 34, thereby reducing the air pressure inside the cover 34. Therefore, it is not necessary to make the pressure resistance of the components of the cover 34 high, and a less rigid structure can be used, thus suppressing the increase in manufacturing costs for the special-purpose vehicle 1.

[0068] The vent section 343 is positioned so as not to come into contact with the powder or granular material moving inside the cover 34. In this embodiment, the vent section 343 is provided on the rear wall 341 of the cover 34. Furthermore, as shown in Figure 9, at least a portion of the vent section 343, specifically the entire vent section 343, is positioned so as not to intersect with the parabola L traced by the powder or granular material falling from the upper surface of the conveyor belt section 310. The parabola L is a parabola that originates from the rear end edge 310P of the upper edge of the conveyor belt section 310 (the rear end edge of the horizontal portion of the conveyor belt section 310). This starting point is located directly above the rotation axis of the other roller 3110 of the pair of rollers 3110, which is located inside the housing section 33. Moreover, at least a portion of the vent section 343 is provided above the uppermost position of the conveyor belt section 310 of the conveying device 31.

[0069] Furthermore, at least a portion of the vent section 343 is located above the discharge port 304 from which the powder is removed in the tank holding section 300, which contains the powder in the tank 30. In this embodiment, as shown in Figure 11, a notch 3008 is formed on the back surface 3004 of the tank 30 above the transport device 31. This notch 3008 constitutes a part of the discharge port 304. At least a portion of the vent section 343 may be located above the upper edge of the notch 3008.

[0070] In this special vehicle 1, it is possible to suppress (prevent or reduce) damage or premature deterioration of components (filters, etc.) of the vent section 343 due to collision with powder or granular material.

[0071] It should be noted that the powder and granular material transport vehicle according to the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0072] In the above embodiment, the vent section 343 was composed of a combination of an opening 344 and a filter 345, but it may be composed of multiple combinations of the opening 344 and the filter 345. Also, although one vent section 343 was provided on the cover 34, multiple vent sections may be provided on the cover 34.

[0073] In the above embodiment, the vent portion 343 was provided on the rear wall 341 of the cover 34, but it may also be provided on the upper wall 340 of the cover 34, or on the side wall 342 of the cover 34. When multiple vent portions 343 are provided on the cover 34, they may be arranged on the same wall portion among the wall portions 340, 341, and 342, or they may be arranged on at least two different wall portions.

[0074] Furthermore, the effect of suppressing damage or premature deterioration of the components (filter, etc.) of the vent section 343 due to collision with granular material can be achieved if the vent section 343 is positioned so as not to come into contact with the granular material moving inside the cover 34. Specifically, this effect can be achieved if the vent section 343 is positioned such that it is located on the rear wall 341 of the cover 34, in a position that does not intersect with the parabola L traced by the granular material falling from the upper surface of the conveyor belt section 310, above the highest point of the conveyor belt section 310, or above the discharge port 304 of the tank 30.

[0075] For example, in a configuration where the vent section 343 is provided on the rear wall 341 of the cover 34, it is preferable that the vent section 343 is provided above the uppermost position of the transport belt section 310, and even more preferable that it is provided above the discharge port 304 of the tank 30.

[0076] Furthermore, even in a configuration where the vent portion 343 is provided on the side wall 342 of the cover 34, it is preferable that the vent portion 343 is provided above the uppermost position of the transport belt portion 310, and even more preferably above the discharge port 304 of the tank 30. In this configuration, it is also preferable that the vent portion 343 is provided behind the discharge port 304 of the tank 30, and even more preferably behind the rear end edge of the upper edge of the transport belt portion 310.

[0077] In the above embodiment, the conveying device 31 was a belt conveyor, but it may be a different type of conveyor, for example, a screw conveyor as shown in Figure 12. In this configuration, the cover 34 (conveyor enclosure) comprises a substantially cylindrical screw casing 346 provided to surround the screw 313 of the conveying device 31, and a disc portion 347 that covers the rear end of the screw casing 346. In this embodiment, the vent portion 343 is located on the disc portion 347 of the cover 34. The vent portion 343 is also located in a position that does not come into contact with the powder or granular material moving inside the cover 34. Furthermore, in this configuration, at least a portion of the vent portion 343 is located above the rotation axis 314 of the screw conveyor. The vent portion 343 is also located behind the front edge of the chute 35. The vent portion 343 may also be provided on the screw casing 346. In this configuration as well, it is preferable that the vent section 343 is located above the rotating shaft 314 of the screw conveyor.

[0078] The cover 34 does not necessarily have to be composed of a cylindrical screw casing 346 and a disc portion 347; for example, it may have a shape that is located above the upper end of the screw 313. Specifically, the cover 34 may consist of a flat upper wall portion that covers the screw 313 from above, and a pair of side wall portions that extend downward from each end edge in the lateral direction of the upper wall portion. In this case as well, it is preferable that the vent portion 343 be located above the rotating shaft 314 of the screw conveyor. Furthermore, it is even more preferable that the discharge port 304 on the back surface 3004 of the tank holding portion 300 be approximately circular (the same shape as the screw 313), and that the vent portion 343 be located above the upper end of the discharge port 304.

[0079] With this configuration, even in a special-purpose vehicle 1 using a screw conveyor, the air pressure inside the cover 34 can be reduced by the vent section 343. [Explanation of Symbols]

[0080] 1...Special vehicle, 2...Vehicle, 3...Motorized body, 20...Driver's cab, 21...Chassis frame, 30...Tank, 31...Conveyor device, 33...Housing section, 34...Cover (conveyor enclosure), 35...Cute, 36...Discharge device, 37...Transfer device, 210...Main frame, 211...Cross member, 300...Tank holding section, 301...Tank guide section, 302...Tank flow straightening section, 303...Tank erection section, 304...Discharge port, 310...Conveyor belt section, 310P...Rear edge, 311...Conveyor drive section, 312...Conveyor base section, 313...Screw, 314...Rotating shaft, 340...Top wall, 341...Rear wall, 342...Side wall, 343...Vent section, 344...Opening, 345...Filter, 346...Screw Lucasing, 347…Disc section, 360…Inlet section, 361…Valve case, 362…Valve body, 363…Discharge section, 364…Rotating drive section, 370…Mixer, 3000…Top wall section, 3001…Side wall section, 3003…Front, 3004…Back, 3005…Opening, 3006…Gate, 3007…Handle, 3008…Notch, 3010… Inclined section, 3011…Opening area, 3020…Vertical flow straightening section, 3021…Horizontal flow straightening section, 3030…Upright wall section, 3110…Roller, 3111…Drive source, 3120…Base wall section, 3620…Blade section, 3640…Drive shaft, 3641…Drive source, 3700…Material supply section, 3701…Flow section, B1…First frame, B2…Second frame, L…Parabola

Claims

1. A tank for containing powders and granules, A conveyor is provided at the bottom of the tank and transfers the powdered material moving from the tank from the front of the vehicle to the rear of the vehicle. A conveyor enclosure covering the rear end of the conveyor, A vent section is provided in the conveyor enclosure and communicates with the outside of the conveyor enclosure so that air present inside the conveyor enclosure can be discharged to the outside of the conveyor enclosure, An air supply means for generating airflow, The system includes a multiphase mixer that mixes the powdered material supplied from the conveyor with the airflow from the air supply means for transport, Air transport vehicle.

2. The aforementioned conveyor is a belt conveyor. The air conveying vehicle according to claim 1, wherein the vent section is positioned so as not to come into contact with the powder or granular material moving inside the conveyor enclosure.

3. The air transport vehicle according to claim 2, wherein at least a portion of the vent section is provided above the uppermost position of the belt of the conveyor.

4. The air transport vehicle according to claim 1 or 2, wherein at least a portion of the vent section is located above the discharge port from which the powdered material is removed in the storage chamber for storing the powdered material in the tank.

5. The air conveying vehicle according to claim 1 or claim 2, wherein at least a portion of the vent section is provided at a position that does not intersect with the parabola traced by the powder or granules falling from the upper surface of the belt of the conveyor.

6. The air transport vehicle according to claim 2, wherein the vent section is provided on the rear wall of the conveyor enclosure.

7. The aforementioned conveyor is a screw conveyor. The air transport vehicle according to claim 1, wherein the conveyor enclosure is a screw casing provided so as to surround the screw of the conveyor.

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