JP4698364B2 - Suction wheel and suction device - Google Patents

Description

The present invention relates to a suction wheel equipped with a suction device including a cyclone dust collector, and a suction device .

2. Description of the Related Art Conventionally, a suction device including a cyclone dust collector that collects dust contained in air sucked by a blower is known (see, for example, Patent Document 1). In such a suction device, for example, a receiver tank that collects a large mass of collection objects, a cyclone dust collector disposed on the downstream side of the receiver tank, and the pressure in the receiver tank by depressurizing the inside of the receiver tank. A blower or the like for sucking objects is provided.
Japanese Patent No. 3079217

  However, in the conventional suction device described above, the dust collection efficiency of the cyclone dust collector is insufficient. In order to improve the dust collection efficiency of this cyclone dust collector, for example, increasing the suction force of the blower has been studied. The fuel consumption of the engine that drives the engine will also deteriorate.

  This invention is made | formed in view of this point, The place made into the objective is to improve dust collection efficiency in the suction device provided with the cyclone dust collector.

A suction wheel according to the present invention includes a blower driven by a traveling engine of a vehicle body, a cyclone dust collector connected to the upstream side of the blower, a cyclone dust collector connected to the downstream side of the blower, and a collection object. A cyclone collecting unit, the two cyclone dust collectors are fixed to the tank, and separated separately by a partition in the tank, and each cyclone dust collector has a cylindrical portion in which a substantially cylindrical spiral chamber is formed. A processing chamber having a conical portion disposed below the cylindrical portion and having a substantially conical collecting chamber formed therein, and a discharge port formed below the conical portion of the processing chamber, disposed on the lower side of the conical portion so as to lie a gap between the airflow tip at the center axis on or near the said processing chamber is formed in a tapered shape which is arranged so that the top And your member, fixed to the lower surface of the airflow control member, in which is provided a support member for supporting the airflow control member.

According to the suction wheel, the swirl flow in the vicinity of the air flow control member is suppressed by arranging the air flow control member on or near the central axis of the processing chamber provided in the cyclone dust collector. As a result, dust or the like riding on the airflow can be suitably dropped, so that the dust collection efficiency of the cyclone dust collector can be dramatically improved.

  Further, since the airflow control member is supported by the support part, the discharge port for discharging the collection object collected by the cyclone dust collector to the outside is blocked by the collection object attached to the support part. Can be prevented. Moreover, it is possible to prevent the dust collection efficiency from deteriorating due to the collection of the collection object in the vicinity of the airflow control member.

In addition, according to the suction wheel, it is possible to suppress the enlargement of the apparatus by fixing the two cyclone dust collectors to the tank, and the air flow of the two cyclone dust collectors interferes with the installation of the partition wall in the tank. Can be prevented.

In addition, according to the suction vehicle, only a traveling engine is required to be mounted.

In the suction wheel, the air flow control member is preferably substantially conical.

  This is because the swirl flow in the vicinity of the airflow control member can be more suitably suppressed by adopting such a shape.

Further, in the suction wheel, the support member is disposed below the airflow control member and includes an elevating device that supports the airflow control member and can adjust the vertical position of the airflow control member. preferable.

  This is because the arrangement position of the airflow control member can be adjusted to a suitable or optimal position.

A suction device according to the present invention includes a blower driven by an independent engine, a cyclone dust collector connected to the upstream side of the blower, a cyclone dust collector connected to the downstream side of the blower, and a tank for collecting a collection target object The cyclone dust collectors are fixed to the tank and separated separately by a partition in the tank, and each cyclone dust collector has a cylindrical portion in which a substantially cylindrical spiral chamber is formed, A processing chamber disposed below the cylindrical portion and having a conical portion having a substantially conical collecting chamber formed therein, and a discharge port formed below the conical portion of the processing chamber disposed on the lower side of the conical portion so as to lie a gap, the upper central axis of the processing chamber or the air flow controller tip is formed on the arranged tapered so that the top at its vicinity When the fixed to the lower surface of the airflow control member, a support member for supporting the airflow control member, in which comprises a.

  The suction device also has the effect of dramatically improving the dust collection efficiency of the cyclone dust collector.

  As described above, according to the present invention, it is possible to provide a suction wheel capable of dramatically improving the dust collection efficiency of the cyclone dust collector.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  As shown in FIGS. 1 to 3, the suction vehicle 1 according to the present embodiment includes a vehicle 10 and a suction device 20 mounted on the vehicle 10. The suction device 20 is used in a state where it is mounted on the vehicle 10.

  As shown in FIG. 1, the vehicle 10 includes a cab 12 and a chassis 13. A traveling engine 14, a power transmission device and a brake device (not shown), and the like are assembled to the chassis 13. In addition, wheels 15 are attached to the chassis 13.

  The suction device 20 includes a subframe 21. The subframe 21 extends in the front-rear direction of the vehicle 10. Hereinafter, the front side, the rear side, the right side, and the left side of the vehicle 10 are simply referred to as the front side, the rear side, the right side, and the left side, respectively. A receiver tank 22 is installed on the rear portion on the subframe 21.

  The receiver tank 22 includes a tank body 22b whose rear side is opened and a lid 22a provided on the rear side of the tank body 22b. The lid 22a is formed so as to be rotatable about the upper side as a fulcrum, and covers the open part of the tank body 22b so as to be freely opened and closed. A gate cylinder 81 made of a hydraulic cylinder is provided between the tank body 22b and the lid 22a. The gate cylinder 81 extends in the longitudinal direction of the receiver tank 22. The base end portion 81a of the gate cylinder 81 is rotatably attached to the tank body 22b, and the distal end portion 81b of the gate cylinder 81 is rotatably attached to the lid 22a. With such a configuration, the lid 22a is opened when the gate cylinder 81 is extended, and the lid 22a is closed when the gate cylinder 81 is contracted.

  A dump cylinder 82 made of a hydraulic cylinder is provided between the subframe 21 and the receiver tank 22. The dump cylinder 82 is arranged in a posture inclined from the longitudinal direction of the subframe 21 and the receiver tank 22. A tip end portion 82b of the dump cylinder 82 is rotatably attached to the tank body 22a, and a base end portion of the dump cylinder 82 is rotatably attached to the subframe 21 via a mounting bracket 82c. With such a configuration, when the dump cylinder 82 extends, the receiver tank 22 is tilted so that the rear side is lowered. Therefore, when the dump cylinder 82 extends with the lid 22a opened, the collected matter in the receiver tank 22 is discharged backward. On the other hand, when the dump cylinder 82 is contracted, the receiver tank 22 is returned to a horizontal posture.

  A tank 26 (see also FIG. 2) is disposed in the front portion of the subframe 21. In the tank 26, two cyclone dust collectors (cyclone dust collectors 24 and 25) are integrally formed. The upstream cyclone dust collector 24 and the downstream cyclone dust collector 25 are arranged in the left-right direction of the vehicle 10.

  Next, the piping system 60 of the suction device 20 will be described with reference to FIG.

  As shown in FIG. 4, the receiver tank 22 and the upstream cyclone dust collector 24 are connected to a hose 61a and a pipe 61b. The cyclone dust collector 24 and the roots blower 32 are connected via a pipe 62. The roots blower 32 and the downstream cyclone dust collector 25 are connected via a pipe 64.

  The midway part of the pipe 64 and the midway part of the pipe 61 b are connected by a branch pipe 65. Valves 70 are respectively provided on the downstream side of the branch part of the pipe 61 b, the downstream side of the branch part of the pipe 64, and the branch pipe 65.

  A pipe 90 is connected to the exhaust port 25f of the cyclone dust collector 25, and the other end of the pipe 90 is connected to the side of the tank 26 where the cyclone dust collector 25 is fixed. The suction device 20 includes a water tank 95 that stores water, and the water tank 95 is connected to a pipe 96. The other end of the pipe 96 is connected to the cyclone dust collector 24. The pipe 96 is connected to a branch pipe 97, and the other end of the branch pipe 97 is connected to the side of the tank 26 where the cyclone dust collector 25 is fixed. Therefore, the water in the water tank 95 is supplied for the mist-like water droplets of the cyclone dust collector 24 and as the stored water in the tank 26. Further, a pipe 99 is connected to the side of the tank 26 where the cyclone dust collector 25 is fixed, and the other end of the pipe 99 is connected to the roots blower 32. The water stored in the tank 26 is supplied to the roots blower 32 as cooling water.

  Further, an exhaust port 52 a is formed on the upper surface of the cyclone dust collector 25. Exhaust from the exhaust port 52a to the outside of the suction device 20 is performed.

  When the collection object such as sludge is collected using the suction device 20, the suction hose 17 (see FIG. 1) connected to the receiver tank 22 is inserted into the collection place and the roots blower is used using the traveling engine 14. 32 is driven. Then, the air in the receiver tank 22 is sucked by the roots blower 32, and the pressure in the receiver tank 22 decreases. As a result, the collection object such as sludge is collected in the receiver tank 22.

  The air in the receiver tank 22 flows into the upstream cyclone dust collector 24 via the air path 61. The cyclone dust collector 24 collects dust having a relatively small specific gravity and a small mass that has not been collected by the receiver tank 22. The air that has flowed out of the cyclone dust collector 24 is sucked into the roots blower 32. The air discharged from the roots blower 32 passes through the pipe 64 and flows into the cyclone dust collector 25 on the downstream side. And this air is cleaned by the cyclone dust collector 25, and is discharged | emitted from the exhaust port 52a.

  During operation of the roots blower 32, the inside of the cyclone dust collector 24 is in a depressurized state, so that a venturi effect is achieved, and water in the water tank 95 is supplied from the pipe 96 to the cyclone dust collector 24 as mist droplets. At this time, the mist-like water droplets are negatively charged, while dust or the like that has not been captured on the upstream side is positively charged. Therefore, dust or the like that has not been captured on the upstream side is preferably supplemented by the mist-shaped water droplets.

  Further, during operation of the roots blower 32, water in the tank 26 is supplied from the pipe 99 to the roots blower 32 as mist-like water droplets. The water stored in the tank 26 is used as cooling water for the roots blower 32, and as a result, the temperature rise of the roots blower 32 is suppressed.

  Next, the roots blower 32 will be described with reference to FIG.

  As shown in FIG. 5, the Roots blower 32 includes two three-leaf rotors 37 in a casing 33, and a space formed by the casing 33 and the rotor 37 is a decompression forming space 38. Openings are formed in the central portions of the left and right sides of the casing 33, and these openings are opened to the outside. Thereby, outside air flows into the casing 33 as cooling air. In this embodiment, the roots blower 32 is driven by the traveling engine 14 (see FIG. 1).

  An opening is also formed in the upper central portion of the casing 33, and this opening communicates with a pipe 62 connected to the casing 33. This opening is an inlet of the roots blower 32. Furthermore, an opening is formed in the lower central portion of the casing 33, and this opening communicates with a pipe 64 connected to the casing 33. This opening is an exhaust port of the roots blower 32.

  Next, the tank 26 formed integrally with the two cyclone dust collectors 24 and 25 will be described with reference to FIG. The cyclone dust collectors 24 and 25 will be described with reference to FIGS. 7 and 8, respectively. In FIG. 6, in order to show the cyclone dust collectors 24 and 25 disposed inside the tank 26, a part of the tank 26 is cut away. As shown in FIG. 6, the tank 26 is integrally formed with the upstream cyclone dust collector 24 and the downstream cyclone dust collector 25.

  As shown in FIG. 6, the cyclone dust collector 24 has a cylindrical portion 24b in which a substantially cylindrical spiral chamber is formed and a lower portion of the cylindrical portion 24b, and a substantially conical collection chamber is formed in the cylindrical portion 24b. And a processing chamber 24a having a conical portion 24c. The cylindrical portion 24b and the conical portion 24c may be integrally formed or may be formed separately. Similarly, the cyclone dust collector 25 includes a processing chamber 25a having a cylindrical portion 25b and a conical portion 25c.

  As shown in FIG. 7, the pipe 61b communicates with the suction port 24e formed in the cylindrical portion 24b of the processing chamber 24, and is installed so as to extend in the tangential direction of the cylindrical portion 24b. A substantially cylindrical exhaust pipe 24d is provided at the central portion inside the cylindrical portion 24b, and an exhaust port 24f (see FIG. 6) communicating with the pipe 62 (see FIG. 4) is provided in the exhaust pipe 24d. Is formed. The exhaust pipe 24d extends upward from a lower portion than the center in the axial direction of the cylindrical portion 24b, and is provided so that a part protrudes from the upper surface of the cylindrical portion 24b.

  As indicated by an arrow in FIG. 7, when the roots blower 32 is activated, air containing dust and the like is introduced from the suction port 24e in a tangential direction along the side wall surface of the cylindrical portion 24b. And this air advances spirally downward along the inner wall surface of the cylindrical part 24b. This spiral movement of air continues to the vicinity of the lower end of the conical portion 24c. Part of the air traveling in the cylindrical portion 24b travels upward from the lower portion of the exhaust pipe 24d and is discharged from the exhaust port 24f (see FIG. 6).

  Air containing dust and the like is carried radially outward by centrifugal force. And dust etc. fall below from the discharge port 24g formed in the lower end of the cone part 24c along the cylindrical part 24b and the cone part 24c. And the dust etc. which fell below the discharge port 24g are collect | recovered by the tank 26. FIG.

  As shown in FIG. 8, the cyclone dust collector 25 includes a cylindrical portion 25b and an exhaust pipe 25d. The suction port 25e formed in the cylindrical portion 25b communicates with the pipe 64 (see FIG. 4). Further, the drain port 25f formed in the cylindrical portion 25b communicates with the pipe 90. Furthermore, an exhaust port 52a (see FIG. 4) communicating with the outside is formed in the exhaust pipe 25d.

  A substantially donut-shaped partition wall 25j is formed between the exhaust pipe 25d and the cylindrical portion 25b at the upper part of the cylindrical portion 25b. With this partition wall 25j, a space 25i is formed between the partition wall 25j and the upper surface of the cylindrical portion 25b. The partition wall 25j is installed to be inclined downward toward the pipe 90 side. A plurality of drain holes 25h are formed in the peripheral wall of the exhaust pipe 25d. The drain hole 25h is formed in the entire peripheral wall from the partition wall 25j to the upper surface of the cylindrical portion 25b in the exhaust pipe 25d.

  During operation of the roots blower 32, moisture contained in the air passing through the exhaust pipe 25d adheres to the inner wall surface and is collected in the space 25i. The water collected in the space 25i travels on the partition wall 25j provided at an inclination toward the pipe 90 and is discharged from the pipe 90. The components of the cyclone dust collector 25 other than those described above are the same as those of the cyclone dust collector 24 described with reference to FIG.

  As shown in FIG. 6, a partition wall 27 is formed at a substantially central portion of the tank 26 in the longitudinal direction. The partition wall 27 separates the upstream cyclone dust collector 24 from the downstream cyclone dust collector 25, and the interior of the tank 26 is separated into two chambers by the partition wall 27. Thus, by installing the partition wall 27 separating the two cyclone dust collectors, it is possible to prevent the air currents of the cyclone dust collectors 24 and 25 from interfering with each other. Further, it is possible to prevent the collection object (mainly sludge) collected by the cyclone dust collector 24 and the collection object (mainly water) collected by the cyclone dust collector 25 from being mixed.

  The cyclone dust collector 24 and the cyclone dust collector 25 include substantially conical airflow control members 41 and 42 disposed below the collection chambers 24c and 25c, respectively. Moreover, the cyclone dust collector 24 and the cyclone dust collector 25 are respectively provided with lifting devices 45 and 46 for adjusting the vertical positions of the airflow control members 41 and 42 below the airflow control members 41 and 42. The airflow control members 41 and 42 are installed such that the tips thereof are on the top and the tips are positioned on the central axis of the processing chamber 24a. Further, the airflow control members 41 and 42 are arranged at their tips slightly above the discharge port 24g (see FIG. 7) of the cyclone dust collector 24 and the discharge port 25g of the cyclone dust collector 25.

  FIG. 9 is a view showing the lifting device 45. FIG. 9 shows a state where a part of the lifting device 45 is cut away. The lifting device 46 is the same as the lifting device 45 shown in FIG.

  The lifting device 45 includes a screw rod 45c fixed to the base 45a, and the screw rod 45c extends vertically upward from the base 45a. The lifting device 45 includes a substantially cylindrical pipe 45d fixed to the lower surface of the airflow control member 41, and a nut 45e fixed to the lower end of the pipe 45d. The nut 45e is screwed to the screw rod 45c. Further, the lifting device 45 includes a lock nut 45f that is disposed below the nut 45e and is screwed into the screw rod 45c.

  By loosening the lock nut 45f and rotating the airflow control member 41, the airflow control member 41 fixed to the nut 45e can be slid up and down along the screw rod 45c. Further, the position of the airflow control member 41 can be fixed by tightening the lock nut 45f with respect to the nut 45e. In the present invention, the lifting device is not limited to the lifting device 45 shown in FIG. 9 as long as the vertical position of the airflow control member can be adjusted, and includes various lifting mechanisms. It is possible to employ a device.

  As described above, according to the present embodiment, the air flow control member having a substantially conical shape on the central axis of the processing chambers 24a and 25a provided in the cyclone dust collectors 24 and 25 and below the conical portions 24c and 25c, respectively. 41 and 42 are installed such that the tips are on the top. Therefore, the swirling flow in the vicinity of the airflow control members 41 and 42 is suppressed, and dust and the like included in the swirling flow are easily dropped from the swirling flow. As a result, the amount of dust and the like discharged from the discharge ports 24g and 25g and collected in the tank 26 increases, so that the dust collection efficiency can be dramatically improved. In addition, since the dust collection efficiency can be improved, the cyclone dust collectors 24 and 25 can suitably remove moisture contained in the air. As a result, the exhaust from the exhaust port 52a is sufficiently free of moisture, so that there is no inconvenience to people around because the exhaust contains a lot of moisture. In addition, since moisture and the like discharged from the conical portions 24c and 25c are collected in the tank 26 along with the dust and the like through the airflow control members 41 and 42, the moisture and the like are scattered on the swirling flow. Can be suppressed.

  Further, since the airflow control members 41 and 42 are respectively supported by the lifting devices 45 and 46 disposed on the lower side thereof, the discharge port 24g of the cyclone dust collector 24 and the discharge port 25g of the cyclone dust collector 25 are connected to the lifting device. It is possible to prevent the recovery object attached to 45 and 46 from being blocked. In addition, it is possible to prevent the dust collection efficiency from being lowered due to the collection of the collection target object in the vicinity of the airflow control members 41 and 42.

  Further, according to the present embodiment, the two cyclone dust collectors 24 and 25 are integrally fixed to the tank 26, and the partition wall 27 that separates the two cyclone dust collectors 24 and 25 is installed in the tank 26. . Therefore, the enlargement of the suction device 20 can be suppressed, and the air currents of the two cyclone dust collectors 24 and 25 can be prevented from interfering with each other. Moreover, it can prevent that the collection thing of the cyclone dust collector 24 and the collection thing of the cyclone dust collector 25 mix.

  Moreover, according to this embodiment, since the airflow control members 41 and 42 have a substantially conical shape, the swirl flow in the vicinity of these airflow control members 41 and 42 can be suppressed more suitably. As a result, the dust collection efficiency can be further improved.

  Moreover, according to this embodiment, the airflow control members 41 and 42 are arrange | positioned under the cone parts 24c and 25c, respectively. Therefore, the swirl flow in the vicinity of the discharge ports 24g and 25g can be suppressed, and dust and the like can be suitably dropped from the discharge ports 24g and 25g. As a result, the dust collection efficiency can be further improved.

  Further, according to the present embodiment, the suction device 20 includes the lifting devices 45 and 46 that can adjust the vertical positions of the airflow control members 41 and 42, respectively. Therefore, even if the optimal arrangement positions of the airflow control members 41 and 42 are slightly different due to manufacturing errors or the like, the vertical positions of the airflow control members 41 and 42 are respectively set using the lifting devices 45 and 46. By adjusting, it becomes possible to arrange the airflow control members 41 and 42 at a better position or an optimum position.

  In the above-described embodiment, the case where the suction device 20 is driven by the traveling engine 14 of the vehicle 10 has been described. However, in the present invention, an independent engine is provided separately from the traveling engine 14 and this independent engine is used. Then, the suction device 20 may be driven. When the suction device 20 is driven by a separate independent engine, the suction device 20 can be used while being separated from the vehicle 10.

  In the above-described embodiment, the case where the airflow control members 41 and 42 have a substantially conical shape has been described. However, in the present invention, the shape of the airflow control member is not limited to the conical shape as long as the shape is a tapered shape. For example, a quadrangular pyramid shape or a triangular pyramid shape may be used.

  In the above-described embodiment, the case where the tips of the airflow control members 41 and 42 are disposed slightly above the discharge ports 24g and 25g of the cyclone dust collectors 24 and 25 has been described. The arrangement position of the control member is not limited to this. For example, the tips of the airflow control members 41 and 42 may be disposed below the discharge ports 24g and 25g. In the present invention, “the airflow control member is disposed below the conical portion” means that part or all of the airflow control member is disposed below the conical portion.

  As described above, the present invention is useful for a suction wheel.

It is a side view of a suction wheel. It is a top view of a suction wheel. It is a rear view of a suction wheel. It is a piping system diagram of a suction device. It is sectional drawing of a Roots blower. It is a partially cutaway side view of a tank formed integrally with two cyclone dust collectors. It is a perspective view which shows the cyclone dust collector of an upstream. It is sectional drawing which shows a cyclone dust collector of a downstream side. It is a partially cutaway side view showing the lifting device.

DESCRIPTION OF SYMBOLS 1 Suction wheel 10 Vehicle 14 Engine 20 Traveling device 24, 25 Cyclone dust collector 24a, 25a Processing chamber 24b, 25b Cylindrical part 24c, 25c Conical part 24d, 25d Exhaust pipe 25h Drain hole 26 Tank 27 Bulkhead 32 Roots blower (blower)
41, 42 Airflow control member 45, 46 Lifting device (supporting part)

Claims (4)

A blower driven by a vehicle running engine;
A cyclone dust collector connected to the upstream side of the blower;
A cyclone dust collector connected to the downstream side of the blower;
A tank for collecting the collection object,
The two cyclone dust collectors are fixed to the tank and separated separately by a partition in the tank,
Each cyclone dust collector is
A processing chamber having a cylindrical portion in which a substantially cylindrical spiral chamber is formed, and a conical portion that is disposed below the cylindrical portion and in which a substantially conical collection chamber is formed;
It is disposed on the lower side of the conical portion so that there is a gap with the discharge port formed on the lower side of the conical portion of the processing chamber, and the tip is on the central axis of the processing chamber or in the vicinity thereof. An airflow control member formed in a tapered shape arranged so as to become ,
A support member fixed to the lower surface of the airflow control member and supporting the airflow control member;
A suction wheel characterized by comprising:   The suction wheel according to claim 1, wherein the airflow control member has a substantially conical shape. The said support member is arrange | positioned under the said airflow control member, and consists of the raising / lowering apparatus which can adjust the up-down position of the said airflow control member while supporting the said airflow control member. 2. The suction wheel according to 2. A blower driven by an independent engine;
A cyclone dust collector connected to the upstream side of the blower;
A cyclone dust collector connected to the downstream side of the blower;
A tank for collecting the collection object,
The two cyclone dust collectors are fixed to the tank and separated separately by a partition in the tank,
Each cyclone dust collector is
A processing chamber having a cylindrical portion in which a substantially cylindrical spiral chamber is formed, and a conical portion that is disposed below the cylindrical portion and in which a substantially conical collection chamber is formed;
It is disposed on the lower side of the conical portion so that there is a gap with the discharge port formed on the lower side of the conical portion of the processing chamber, and the tip is on the central axis of the processing chamber or in the vicinity thereof. An airflow control member formed in a tapered shape arranged so as to become ,
A support member fixed to the lower surface of the airflow control member and supporting the airflow control member;
A suction device comprising:

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