JP4486576B2 - Specially equipped vehicle - Google Patents

Description

  The present invention relates to a specially equipped vehicle. More specifically, the present invention relates to a specially equipped vehicle that sucks and collects a collected material in a receiver tank by suction air from a suction blower, and pumps and discharges the collected material in the receiver tank by pressure air from a compressor. Is related to a technique that enables suction recovery and pressure discharge of powder (dry) or liquid (wet) industrial waste with a single specially equipped vehicle and simplifies the installation equipment therefor. .

  Industrial waste such as dust collection ash, dust and sewage discharged from cement factories, steel mills, automobile factories, thermal power plants, etc. is recovered, and the contained useful components are reused as resources. Hazardous components are disposed of. Industrial waste, such as dust collection ash, dust and sewage discharged from factories, etc., is sucked and collected by a specially equipped vehicle, and is carried to a facility that extracts and decomposes useful components.

  The conventional specially equipped vehicle has a suction recovery means for sucking and collecting the collected matter (dry type) in the receiver tank by the suction air from the suction blower, and a pressure discharge means for pumping and discharging the dust in the receiver tank by the pressure air from the compressor. (For example, Patent Document 1).

  In Patent Document 1, when dust collected by pressure air from a compressor is transported by pressure to a silo or the like using a relay hose, and dust is thrown into a silo or the like from a specially equipped vehicle, the dust is prevented from scattering. ing. By the way, in patent document 1, the dust (dry type) sucked and recovered is pressure-transported and discharged by pressure air, and wet-collected materials such as sewage and sludge cannot be pressure-discharged by pressure air. is there. The specially equipped vehicle of Patent Document 1 is exclusively for the dry type.

  On the other hand, there is a tank vehicle as a specially equipped vehicle that performs wet recovery (for example, Patent Documents 2 and 3).

In Patent Documents 2 and 3, wet collected materials such as sewage and sludge are collected by suction, transported under pressure, and the collected portion is washed with washing water. Dust collection ash, dust, gravel, sand, etc. It is impossible to suck and collect the dry-type collected material and transport it with pressure air for discharge. The specially equipped vehicles of Patent Documents 2 and 3 are for wet use only.
Utility Model Registration No. 2528608 Japanese Patent Laid-Open No. 7-313995 Japanese Utility Model Publication No. 6-16138

  The present invention has been made in view of such a problem, and suction recovery and pressure transport of dry industrial waste such as dust collection ash, dust, and gravel, or wet industrial waste such as sewage and sludge ( It is an object of the present invention to provide a specially equipped vehicle that can be discharged) and can perform a dual role with one unit, and to simplify the mounting equipment for that purpose.

According to the first aspect of the present invention, the suction / collection means 3 sucks and collects the collected material in the receiver tank 2 by the suction air from the suction blower 1, and the collected material in the receiver tank 2 is pumped by the pressure air from the compressor 4. A specially equipped vehicle equipped with a pressure discharge means 5 for discharging, and as the pressure discharge means 5, a liquid discharge pressure air path 8 for discharging the liquid from the liquid discharge port 6 of the receiver tank 2 and the powder of the receiver tank 2 a powder discharge pressure air path 9 for discharging the powder from the body discharge port 7, in Rukoto includes a switching means 10 switches between the liquid discharging pressure air path 8 and the powder discharge pressure air path 9, In the liquid discharge state, the recovered liquid is pressurized with the pressure air blown into the receiver tank 2 from the liquid discharge pressure air path 8 and discharged from the liquid discharge port 6. Is, in a powder discharging state, and is characterized in Rukoto powder was drained through powder outlet 7 at a pressure air injected into the receiver tank 2 from the powder discharging pressure air path 9.

  According to such a configuration, when recovering a powdery recovered material and discharging it using pressure air, or when recovering a liquid recovered material, this is recovered using pressure air. When the pressure air from one compressor 4 is switched to the pressure air path 9 for discharging powder or the pressure air path 8 for discharging liquid, the powdered recovered material or the liquid recovered material is recovered. Each of the objects can be pressure-transported to a silo or the like, and a single unit can perform a dual role.

  In addition, by switching the pressure air path from the single compressor 4, it is possible to carry out pressure transportation of the powdered or liquid recovered material and simplify the installation equipment.

  In the invention according to claim 2, a powder filter 12 is provided in a powder discharge path 11 that receives supply of pressure air from the compressor 4 and discharges powder from the powder discharge port 7 inside the receiver tank 2, A liquid removal cover 13 for preventing the body filter 12 from being covered with liquid is detachably provided.

  According to such a configuration, by covering the powder filter 12 with the liquid removal cover 13, it is possible to prevent the liquid from covering the powder filter 12 during the suction recovery of the liquid recovery product, and the liquid recovery It is possible to collect and collect materials by pressure and transport (discharge) them, and remove the liquid cover 13 to carry out pressure transportation of the collected materials in powder form. As a result, the pressure transportation route can be shared and the installation equipment is simplified. .

  According to a third aspect of the present invention, a liquid discharge valve 14 is provided at the liquid discharge port 6 so as to be freely opened and closed, and a liquid injector nozzle 15 for injecting pressure air from the compressor 4 is provided on the discharge downstream side of the liquid discharge valve 14. A powder discharge valve 16 is provided at the body discharge port 7 so as to be openable and closable, and a powder injector nozzle 25 for injecting pressure air from the compressor 4 is provided downstream of the powder discharge valve 16. Is.

  According to such a configuration, pressure air is injected from the liquid injector nozzle 15 or the powder injector nozzle 25 to the downstream side of each of the discharge valves 14 and 16, and the pressure transport force of the liquid or powder-like recovered material. Increase (emission).

  In the invention according to claim 4, a large-diameter discharge port 17 is formed at the rear part of the receiver tank 2, a large-diameter hatch 18 is provided in the large-diameter discharge port 17 so as to be freely opened and closed, and a small-diameter discharge port 19 is provided in the large-diameter hatch 18. The small-diameter lid 20 is formed so as to be openable and closable in the small-diameter discharge port 19, and the powder filter 12 is detachably provided inside the small-diameter lid 20.

  According to such a configuration, the large-diameter hatch 18 is opened, and the receiver tank 2 is dumped up to discharge a large amount of collected material including sludge. By opening the small-diameter lid 20, a liquid-like collected material can be discharged. In particular, the powder filter 12 is detachably attached to the small-diameter lid 20 so that maintenance of the powder filter 12 is easy and the powder filter 12 is covered. The liquid avoidance cover 13 can be easily attached and detached, and the operation for changing the specifications of the specially equipped vehicle is facilitated.

  The invention according to claim 5 is characterized in that the powder discharge pressure air path 9 is connected from the outside to the inside of the small-diameter lid 20.

  According to such a configuration, the powder filter 12 attached to the inside of the small-diameter lid 20 can be easily faced in the receiver tank 2, and the powder filter 12 is provided with a pressure air path for discharging powder. 9 can be reached conveniently.

  According to the sixth aspect of the present invention, the large-diameter discharge port 17 is provided with a tightening ring 21 that reciprocates by a predetermined angle in the circumferential direction, and the tightening ring 21 can be driven to rotate by the hydraulic cylinder 22. A tightening cam surface 23 that forms a connecting / disengaging means 26 by reciprocating rotation of the tightening ring 21 between them and pulls the large-diameter hatch 18 toward the tightening ring 21 by driving rotation in the tightening direction of the tightening ring 21. Is formed between the fastening ring 21 and the large-diameter hatch 18.

  According to such a configuration, the tightening ring 21 is driven and rotated by the hydraulic cylinder 22, and the large-diameter hatch 18 can be strongly drawn toward the tightening ring 21 by the tightening cam surface 23. The closing force can be increased, and no leakage occurs during pressure transportation (discharge).

  The invention according to claim 7 is characterized in that the small-diameter lid 20 is fastened to the large-diameter hatch 18 with a bolt 24 so as to be freely releasable.

  According to such a configuration, the small-diameter lid 20 can be strongly fastened to the large-diameter hatch 18 with a simple configuration and easy work, and no leakage occurs during pressure transportation (discharge).

  In short, according to the present invention, each of the powdery recovered material or the liquid recovered material can be pressure-transported to a silo or the like, and one unit can serve as a dual role. In addition, by switching the pressure air path from one compressor, it is possible to simplify the mounting equipment while enabling the pressure transportation of the powdered or liquid recovered material.

  Embodiments of the present invention will be described below. 1 is a system diagram of a specially equipped vehicle of the present invention, FIG. 2 is an overall side view, and FIG. 3 is an overall plan view.

  As shown in FIG. 1, the specially equipped vehicle A sucks and collects the collected material in the receiver tank 2 by the suction air from the suction blower 1 driven by the power take-off shaft 31 driven as necessary by the engine of the vehicle. The recovery means 3 and the pressure discharge means 5 for pumping and discharging the collected matter in the receiver tank 2 by the pressure air from the compressor 4 mounted on the vehicle are mounted.

  The suction recovery means 3 includes a cyclone-type secondary catcher 27 for the receiver tank 2, a tertiary catcher 29 having a bag filter 28, a roots-type suction blower 1, and a quaternary catcher that finally cleans the suction air. 30 are connected in this order by a suction recovery path 34. The suction blower 1 is driven by the rotation of the power take-off shaft 31, and industrial waste (collected material) is drawn from the suction hose 33 (FIG. 4) extending from the suction port 32 of the receiver tank 2 with negative pressure in the receiver tank 2. ) Is collected by suction.

  The suction recovery path 34 between the secondary catcher 27 and the suction blower 1 is provided with dry / wet switching valves 35 and 36 and a switching valve 69 in the suction recovery path 34 before and after the tertiary catcher 29 to allow the tertiary catcher 29 to pass therethrough. 37 and the bypass path 38 that does not allow the tertiary catcher 29 to pass through are switched so that the powder recovery specification (FIG. 5) or the liquid recovery specification (FIG. 4) can be supported.

  The quaternary catcher 30 cleans and silences the air exhausted from the suction blower 1 in water. In addition, water is circulated through the water supply path 40, and the suction blower 1 is hermetically sealed in order to cool the suction blower 1 and obtain a high vacuum of the suction blower 1 to increase efficiency. Reference numeral 76 denotes a water tank.

  In this manner, during wet suction, the dry / wet switching valves 35 and 36 are switched, and a bypass path 38 is formed between the secondary catcher 27 and the suction blower 1 as shown in the system diagram of FIG. By driving the suction blower 1, the wet collected material is sucked and collected in the receiver tank 2, fine dust mixed in the suction air is captured by the secondary catcher 27, and the suction air that has been considerably cleaned passes through the suction blower 1. Passed air that has passed through the quaternary catcher 30 and purified is discharged from the exhaust port 41.

  At the time of dry suction, the wet and dry switching valves 35 and 36 are switched to form a dust collection path 37 as shown in the system diagram of FIG. 5, and fine dust is captured by the bag filter 28 of the tertiary catcher 29. The suction air cleaned in the same manner as above is discharged from the exhaust port 41. In this case, when clogging occurs in the cylindrical bag filter 28 of the tertiary catcher 29, the backwash solenoid valve 39 is operated with air from the small compressor 63 as necessary, and air with the air from the small compressor 63 is used. The bag filter 28 can be backwashed and cleaned (FIG. 6). Reference numeral 64 denotes an air tank. The suction flow by the suction blower 1 as described above is indicated by white arrows in FIG.

  In the present invention, the wet recovered material or the dry recovered material recovered in the receiver tank 2 is discharged with pressure air from the compressor 4. The pumping / discharging means 5 will be described in detail below.

  As shown in FIG. 1, the pressure discharge means 5 is a liquid for pressure discharging liquid from a compressor 4 driven as necessary by a power take-off shaft 31 equipped in the vehicle and a liquid discharge port 6 of the receiver tank 2. Pressure air path 8 for discharge, pressure air path 9 for discharging powder from the powder discharge port 7 of the receiver tank 2, pressure air path 8 for discharging liquid, and pressure air for discharging powder It is comprised by the switching means 10 which switches the path | route 9.

  The pressure air path 42 from the compressor 4 is configured to be switchable between a liquid discharge pressure air path 8 and a powder discharge pressure air path 9 by switching valves 43 and 44 constituting the switching means 10. The air path 8 is connected to the flow port 45 of the receiver tank 2, and the powder discharge pressure air path 9 is connected to the lower end of the bent pipe 47 formed at the tip of the powder discharge port 7 with a space therebetween. The powder filter 12 is provided in the powder discharge path 11 between the lower end of the bent pipe 47 and the powder discharge pressure air path 9.

  In this way, by switching the switching valves 43 and 44, it is possible to switch between the powder pumping state shown by the white arrow in FIG. 8 and the liquid pumping state shown by the white arrow in FIG. . In such a pressure feeding state, the switching valve 46 close to the flow port 45 of the receiver tank 2 is closed.

  A powder discharge valve 16 is provided at the powder discharge port 7 so as to be openable and closable, and a powder injector nozzle 25 for injecting pressure air from the compressor 4 is connected to the discharge downstream side of the powder discharge valve 16. Further, a liquid discharge valve 14 is provided at the liquid discharge port 6 so as to be freely opened and closed, and a liquid injector nozzle 15 for injecting pressure air from the compressor 4 is connected to the discharge downstream side of the liquid discharge valve 14.

  In this manner, in the powder pressure feeding state shown in FIG. 8, the pressure air from the compressor 4 passes through the powder filter 12 through the powder discharge pressure air path 9 and faces the powder filter 12 with an interval. The powder is ejected from the powder outlet 7 through the bent pipe 47, and in this case, pressure air is injected from the powder injector nozzle 25 in the vicinity of the powder outlet 7, It increases the pressure transport (discharge) power of the dry recovery. A relay hose (not shown) is connected to the powder discharge port 7 and the dry collected material is put into a silo (not shown) or the like.

  In the liquid pumping state shown in FIG. 9, the pressure air from the compressor 4 is blown into the receiver tank 2 via the flow port 45 from the pressure air path 8 for liquid discharge, pressurizing the liquid level of the recovered material, and the liquid discharge port In this case, pressure air is injected from the liquid injector nozzle 15 in the vicinity of the liquid discharge port 6 to further increase the pressure transport (discharge) force of the recovered liquid. If necessary, a relay hose is connected to the liquid discharge port 6 and the collected liquid is put into a silo or the like. If it is safe, it may be discharged into a river or pond.

  In this way, when recovering a powdered product and discharging it using pressurized air, or when recovering a liquid product and discharging it using pressurized air In addition, by switching the pressure air from one compressor 4 to the powder discharge pressure air path 9 or the liquid discharge pressure air path 8 and supplying them, each of the powdery recovered material or the liquid recovered material is supplied. It can be transported by pressure to a silo, etc., and a single unit can perform a dual role. In addition, by switching the pressure air path from the single compressor 4, it is possible to simplify the mounting equipment while performing the pressure transportation of the powdery or liquid recovered material.

  By the way, FIG. 10 shows the liquid discharge state by the suction blower 1, and the load release valve 67, the dry / humidity switching valve 35, the switching valves 68, 46 are opened, the switching valves 65, 69, the dry / humidity switching valve 36, and the switching valve 66 are closed, As the suction blower 1 is driven, outside air is introduced from the load release valve 67 as indicated by the white arrow, outside air is blown into the receiver tank 2 from the blower exhaust passage 70 through the flow port 45, and the liquid level of the recovered material is increased by liquid. The liquid flows out from the discharge port 6. In this case, the compressor 4 is not driven. Incidentally, the pumping force by the compressor 4 is set to be about four times higher than the liquid pumping force using the suction force by the suction blower 1. Further, the valve operation as described above is performed in conjunction with a push button operation on the operation panel 71. The valve switching as described above is performed by pressure air from the small compressor 63.

  As shown in FIGS. 2, 3, and 19, a large-diameter discharge port 17 is formed at the rear of the receiver tank 2, and a large-diameter hatch 18 is provided in the large-diameter discharge port 17 so as to be freely opened and closed. As shown in FIG. 12, a small-diameter discharge port 19 is formed in a small-diameter member 77 formed in the large-diameter hatch 18. A small-diameter lid 20 is provided at the small-diameter discharge port 19 so as to be freely opened and closed. A felt-made powder filter 12 shown in FIG. 11 is detachably attached to the inside of the small-diameter lid 20 with a bolt by a pressing ring 48 shown in FIGS. 14 (a) and 14 (b). A liquid repellent cover 13 shown in FIG. 17 is detachably attached to the small-diameter lid 20 with a bolt 78 from above the powder filter 12. A handle 49 is formed on the liquid removal cover 13 to facilitate attachment / detachment of the liquid removal cover 13. FIG. 18 shows a packing 62 disposed on the back surface of the liquid-repellent cover 13 to achieve a watertight seal.

  In this way, by covering the powder filter 12 with the liquid removal cover 13, it is possible to prevent the liquid from covering the powder filter 12 during the suction and recovery of the liquid recovery product. The collected material can be sucked and collected and pressure transported (discharged). By removing the liquid-removing cover 13, the powdered material can be transported smoothly. As a result, it is possible to satisfactorily perform suction collection and pressure transport of the powdery or liquid collection.

  By the way, in the state where the drive of the compressor 4 is stopped and the supply of the pressure air for pressure transportation is stopped, the large-diameter hatch 18 is opened, and the receiver tank 2 is dumped up by the extension of the dump cylinder 50 to include sludge. A large amount of recovered material can be discharged. By opening the small-diameter lid 20, the liquid recovery product can be discharged from the bottom of the receiver tank 2, and the discharge efficiency can be increased.

  In particular, the powder filter 12 is detachably attached to the small-diameter lid 20, and the powder filter 12 is opened by rotating the small-diameter lid 20 around the rotation shaft 51 with respect to the large-diameter hatch 18. Can be easily attached and detached, and maintenance is facilitated, and the liquid avoidance cover 13 placed on the powder filter 12 can be easily attached and detached, and the operation of changing the specifications (dry type and wet type) of the specially equipped vehicle A is facilitated. Further, the powder discharge pressure air path 9 is connected from the outside to the inside of the small-diameter lid 20, and the powder filter 12 attached to the inside of the small-diameter lid 20 is easily arranged inside the receiver tank 2. Thus, the powder air 12 can be conveniently exposed to the powder filter 12.

  As shown in FIG. 19, a flange 53 is welded to the rear end of the cylindrical body plate 52 of the receiver tank 2 to form the large-diameter discharge port 17, and a recess is formed in the flange 53 so that an annular packing 54 is formed. It is inserted. A flange 56 is welded to the peripheral portion of the end plate 55 forming the large-diameter hatch 18, and an annular protrusion 57 is formed on the inner surface of the flange 56, and the protrusion 57 contacts the packing 54 to provide an airtight / watertight seal. I try to figure it out.

  As shown in FIGS. 19 to 23, engaging claws 58 project from the outer periphery of the flange 56 of the large-diameter hatch 18 at intervals in the circumferential direction. A clamping ring 21 having a U-shaped cross section is provided on the outer peripheral portion of the large-diameter discharge port 17 of the receiver tank 2 so as to be slidable in a circumferential direction on the flange 53 of the receiver tank 2 and to be rotatable. Reference numeral 79 denotes a sliding contact rib. A fastening piece 59 extends inward from the edge of the fastening ring 21 on the side of the large-diameter hatch 18 (outside) in an inner circumferential direction. When the engaging claw 58 of the large-diameter hatch 18 passes between the adjacent fastening pieces 59, 59, the large-diameter hatch 18 can be rotated around the shaft 60 (FIG. 3) to close the large-diameter discharge port 17. I am doing so. A plurality of connecting pieces 61 are provided on the outer periphery of the tightening ring 21 at intervals in the circumferential direction, and the cylinder rod side of the hydraulic cylinder 22 with the bottom side fixed to the receiver tank 2 side is connected to the connecting piece 61. The tightening ring 21 can be reciprocated by a predetermined angle by expansion and contraction of the hydraulic cylinder 22.

  As shown in FIG. 21, the large-diameter hatch is formed on the sliding contact surface between the tightening piece 59 of the tightening ring 21 and the engaging claw 58 of the large-diameter hatch 18 by driving rotation of the tightening ring 21 in the tightening direction A by the hydraulic cylinder 22. A tightening cam surface 23 is formed to draw 18 to the tightening ring 21 side.

  In this way, the tightening ring 21 is driven and rotated by the hydraulic cylinder 22, and the large-diameter hatch 18 can be strongly pulled toward the tightening ring 21 side, that is, the receiver tank 2 side by the tightening cam surface 23. The closing force of the large-diameter hatch 18 can be increased, and no leakage occurs during pressure transportation.

  To open the large-diameter hatch 18, the hydraulic cylinder 22 is contracted and the fastening ring 21 is rotated in the loosening direction, the hatch opening / closing cylinder 75 is extended, the large-diameter hatch 18 is rotated around the shaft 60, and the fastening piece 59 , 59, the large claw hatch 18 can be opened. In this way, the engagement claw 58 passes between the fastening pieces 59 and 59 so that the large-diameter hatch 18 is opened and closed, and the fastening ring 21 and the large-diameter hatch 18 are connected and detached (means 26) in various designs. Can be changed.

  Further, as shown in FIG. 12, a bolt 24 is provided to be rotatable around a shaft 72 at intervals in the circumferential direction of a small-diameter discharge port 19 formed in the large-diameter hatch 18, and Notches 73 are formed at intervals in the direction, and the small-diameter lid 20 is rotated around the rotation shaft 51 to close the small-diameter discharge port 19, and then the bolt 24 is rotated around the shaft 72 to make the notches. 73, and then the nut 74 is tightened so that the small-diameter lid 20 is releasably fastened to the small-diameter discharge port 19, and the small-diameter lid 20 is secured to the large-diameter hatch with a simple configuration and easy work. 18 can be tightened strongly and no leakage occurs during pressure transportation.

It is a systematic diagram of one embodiment of the present invention. It is a whole side view same as the above. It is a whole top view same as the above. It is explanatory drawing at the time of the wet suction same as the above. It is explanatory drawing at the time of dry-type attraction | suction same as the above. It is explanatory drawing of the tertiary catcher same as the above. It is a systematic diagram which shows the flow of the suction by a suction blower same as the above. It is a systematic diagram which shows the flow of the powder pumping by a compressor same as the above. It is a systematic diagram which shows the flow of the liquid pumping by a compressor same as the above. It is a systematic diagram which shows the flow of the liquid discharge by a suction blower same as the above. (A) is a front view of a powder filter same as the above, (b) is a side view. (A) is a side view of a small-diameter lid to which the above powder filter is attached, and (b) is a front view of a bolt that fixes the small-diameter lid to a small-diameter discharge port formed in a large-diameter hatch. It is a fragmentary sectional view same as the above. (A) is a partial front view of a pressing ring for attaching the above powder filter to a small-diameter lid, and (b) is a sectional view. It is a back view of a small aperture lid same as the above. It is a front view of a small aperture lid same as the above. (A) is a front view of the same liquid repellent cover, (b) is a side view. (A) is a front view of the packing which aims at the watertight seal between the liquid-removable cover and powder filter same as the above, (b) is a side view. It is sectional drawing which shows the coupling | bonding / separation means and clamping ring of a large aperture hatch same as the above. It is a side view which shows the relationship between the fastening piece of a fastening ring same as the above, and the engaging claw of the flange by the side of a large diameter hatch. It is explanatory drawing which shows the tightening cam surface same as the above. It is a front view of a clamping ring same as the above. It is a front view of the flange by the side of the large diameter hatch same as the above. It is the front view which connected the hydraulic cylinder to the clamp ring same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Suction blower 2 Receiver tank 3 Suction collection means 4 Compressor 5 Pressure discharge means 6 Liquid discharge port 7 Powder discharge port 8 Liquid discharge pressure air path 9 Powder discharge pressure air path 10 Switching means

Claims (7)

It is a specially equipped vehicle equipped with suction collection means for sucking and collecting the collected material in the receiver tank by suction air from the suction blower, and pressure feeding and discharging means for pumping and discharging the collected material in the receiver tank by pressure air from the compressor. as pumping discharge means, and for discharging liquid pressure air path for discharging the liquid from the liquid outlet of the receiver tank, and the powder discharge pressure air path for discharging the powder from the powder outlet of the receiver tank in Rukoto comprising a switching means switches between the liquid discharging pressure air path and the powder discharge pressure air path, the liquid discharge condition, the recovered product at sparged pressure air to the receiver tank from the liquid discharging pressure air path The liquid level is pressurized and discharged from the liquid discharge port. In the powder discharge state, the receiver is connected via the pressure air path for powder discharge. Specially equipped vehicles, characterized in Rukoto powder is discharged to a pressure air injected into the tank through the powder outlet.   A liquid-removal cover that prevents the liquid from covering the powder filter by providing a powder filter in the powder discharge path that receives the pressure air supplied from the compressor and discharges the powder from the powder discharge port inside the receiver tank. The specially equipped vehicle according to claim 1, wherein the vehicle is detachably provided.   A liquid discharge valve can be opened and closed freely at the liquid discharge port, a liquid discharge injector nozzle that injects pressurized air from the compressor downstream of the liquid discharge valve, and a powder discharge valve can be opened and closed at the powder discharge port. 2. The specially equipped vehicle according to claim 1, further comprising a powder discharge injector nozzle for injecting pressure air from a compressor on a downstream side of the discharge of the powder discharge valve.   A large-diameter outlet is formed at the rear of the receiver tank, a large-diameter hatch is provided on the large-diameter outlet, and a small-diameter outlet is formed on the large-diameter hatch. A small-diameter lid is openable on the small-diameter outlet. The specially equipped vehicle according to claim 1, wherein a powder filter is detachably provided inside the small-diameter lid.   5. The specially equipped vehicle according to claim 4, wherein a pressure air path for discharging powder is connected from the outside to the inside of the small-diameter lid.   A large-diameter discharge port is provided with a tightening ring that reciprocates by a predetermined angle in the circumferential direction. The tightening ring can be driven and rotated by a hydraulic cylinder. A tightening cam surface is formed between the tightening ring and the large-diameter hatch that pulls the large-diameter hatch toward the tightening ring by driving rotation in the tightening direction of the tightening ring. The specially equipped vehicle according to claim 4.   The specially equipped vehicle according to claim 4, wherein a small-diameter lid is fastened to the large-diameter hatch with a bolt so as to be freely releasable.

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