JP2565283Y2 - Tank vehicle - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention provides a pressure tank and a water tank, in which a contaminated fluid such as sludge is collected and treated in the pressure tank, and the water in the water tank can be used for washing water. The present invention relates to a tank vehicle.

[0002]

2. Description of the Related Art Conventionally, a negative pressure is generated in a closed tank to suck and collect sludge in a sewer in the tank, and the inside of the tank is maintained at high pressure to forcibly remove water sucked together with sludge from the tank. A device for collecting sludge and the like, which is designed to be fed under pressure to a sewer system, is known (Japanese Patent Application Laid-open No. 63-163).
-293244).

[0003]

However, in the above-mentioned conventional apparatus, a vacuum pump for reducing or increasing the pressure in the tank and a four-way valve interposed in a suction / discharge pipe connecting the tank and the vacuum pump are all provided in the tank. When mounted on a vehicle, they occupy the available space on the vehicle, which not only reduces the tank capacity, but also reduces the capacity of the tank, as well as the intake and exhaust pipes connecting the tank, vacuum pump and four-way valve. The length of the piping becomes longer and the handling of the pipes becomes troublesome, and the vacuum pump sucks the contaminated air in the tank directly through the four-way valve and discharges the contaminated air in the tank to the atmosphere. Therefore, there is another problem that the pump may fail or cause air pollution.

The present invention has been made in view of the above, and an object of the present invention is to provide a novel tank vehicle which solves all of the above problems.

[0005]

In order to achieve the above object,
The features of the present invention include a pressure tank and a water tank mounted on a vehicle body frame, a blower communicating with the pressure tank and capable of reducing or increasing the pressure in the pressure tank, and the pressure tank and the water tank. And a water pump capable of sucking water stored in the tanks in communication with the water tank. In the tank vehicle, the blower is disposed in the water tank, and the blower is disposed in an upper air chamber in the water tank. A suction / discharge valve device for selectively switching communication between the suction pipe and the discharge pipe between the pressure tank and the outside air; and providing the air between one of the suction pipe and the discharge pipe and the suction / discharge valve apparatus. The room was interposed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the tank vehicle of the present invention will be described below with reference to the drawings.

FIG. 1 is a fragmentary side view of the tank vehicle of the present invention, and FIG. 2 is a side view of the tank assembly of the vehicle in a state where the tank assembly is dumped.

The body frame F of the tank vehicle comprises a main frame M and a sub-frame S thereon. A tank frame Tf is mounted on the sub-frame S, and a rear end of the tank frame Tf is It is connected to the frame S.

A telescopic dump cylinder 2 is connected between the front end of the tank frame Tf and the sub-frame S, and the tank frame Tf can be tilted rearward around the hinge pin 1 by extension of the cylinder 2. It has become.

A tank assembly T is integrally mounted on the tank frame Tf. The tank assembly T has a closed large-capacity pressure tank Tp at the rear half thereof and a small-capacity pressure tank Tp at the front half thereof. It comprises a sealed fresh water tank Tw and a sealed separator chamber Cs formed between the two tanks Tp and Tw.

A liquid ring type blower B is provided below the fresh water tank Tw, and a water pump P is integrally mounted on the sub-frame S in front of the tank frame Tf.
The blower B and the water pump P are both driven to rotate by a traveling engine of the tank vehicle via a PTO (power take-out device).

The closed pressure tank Tp is formed on a cylinder, and a discharge port 3 is opened on a rear surface thereof. The discharge port 3 is opened and closed by a tail gate 5 pivotally supported on an upper portion thereof. . A free end of an opening / closing cylinder 7 pivotally supported by the pressure tank Tp 6 is connected to the tailgate 5, and the tailgate 5 can be opened / closed by the expansion / contraction operation of the cylinder 7. On the outer surface of the tailgate 5, a large hose reel 10 is rotatably supported via a stay 9, and below it, a small hose reel 12 is rotatably supported via another stay 11, A cleaning nozzle 14 is attached to a free end of a hose 13 wound around a large hose reel 10, and a cleaning gun 16 is attached to a free end of a hose 15 wound around a small hose reel 12. .

The inside of the pressure tank Tp is divided by a partition wall 18 into a separation chamber 19 and a sludge chamber 20. The partition wall 18 is formed in a spherical shape convex toward the separation chamber 19 side,
The support shaft 21 is rotatably supported on both side walls of the pressure tank Tp so as to be openable and closable, and a packing 24 is attached to the outer periphery thereof so as to partition the separation chamber 19 and the sludge chamber 20 in a fluid-tight manner. .

In the pressure tank Tp, an opening / closing cylinder 23 rotatably supported by the pressure tank Tp is connected to an upper portion of the partition wall 18, and according to the contraction operation of the cylinder 23, the partition wall 18 is As shown by the solid line in FIG. 1, the pressure tank Tp stands up and is fluid-tightly partitioned into a separation chamber 19 and a sludge chamber 20.
The partition wall 18 can be turned upside down by approximately 90 ° as shown by a chain line in FIG. 1 to allow the separation chamber 19 and the sludge chamber 20 to communicate with each other.

A communication passage 25 for communicating the separation chamber 19 with the sludge chamber 20 is provided through the separation wall 18. At the opening end of the communication passage 25 on the side of the sludge chamber 20, a primary filtration device 26 that can primarily filter the water in the sludge water stored in the sludge chamber 20 is provided. The primary filtration device 26 is constituted by a mesh filter element, and is constituted by a relatively coarse mesh for temporarily filtering the sludge water in the sludge chamber 20.

As shown in FIG. 1, a half of the communication passage 25 on the side of the separation chamber 19 is bent upward, and a check valve is provided at an open end thereof to allow a fluid to flow only from the sludge chamber 20 to the separation chamber 19. 27 is attached. If the sludge chamber 20 is pressurized as described later and the separation chamber 19 is communicated with the atmosphere, the water in the sludge water stored in the sludge chamber 20 is primarily filtered by the primary filtration device 26, and then the communication passage 25 and the check valve 27 to the separation chamber 19.

In FIG. 1, a secondary filtration device 28 is provided in the separation chamber 19. The secondary filtration device 28 is also formed of a mesh filter element, and is connected to the suction circuit 45 (FIG. 3) of the water pump P, as described later in detail. The filter is formed into a relatively dense mesh to be filtered.

In FIG. 1, a swivel cylinder 31 is pivotably supported on the rear upper wall of the pressure tank Tp.
The support boom 30 is supported so that it can be raised. A flexible suction pipe 32 is supported by the support boom 30, and a base end of the suction pipe 32 is suspended from a lower part of the swirl cylinder 31 and communicates with a suction port 33 opened in the sludge chamber 20. . An opening / closing valve 29 is interposed at a communicating portion between the suction pipe 32 and the suction port 33 and is extended outwardly from the support boom 30 so that a distal end thereof can be inserted into a sewer 34 as described later. Has become.

FIG. 3 is an overall schematic diagram of the air circuit Ca and the water circuit Cw.

The air circuit Ca is connected to the blower B and the pressure tank Tp so as to reduce or increase the pressure of the pressure tank Tp.
and p are connected via a suction / discharge valve device V described later. 4 is a schematic perspective view of the blower B, the suction / discharge valve device V and their piping system when the pressure tank Tp is depressurized, FIG. 5 is a cross-sectional view taken along line 5-5 in FIG. 4, and FIG. FIG. 7 is a schematic perspective view of the blower B, the suction / discharge valve device V, and a piping system thereof when the tank Tp is pressurized. FIG. 7 is a cross-sectional view taken along the line 7-7 in FIG. The structure of the blower B and the intake / exhaust valve device V will be described in detail with reference to FIGS.
In the lower part of the fresh water tank Tw, the liquid ring type blower B is
The suction / discharge valve device V is provided in a state of being immersed in fresh water, and an air chamber 37 is defined at an upper portion thereof, and the air chamber 37 is supported in the air chamber 37 by an upper wall of the fresh water tank Tw.
Is provided.

In the blower B, a pair of suction ports 35s and a discharge port 36d are opened, and a suction pipe 35 connected to the pair of suction ports 35s extends upward to open directly to the air chamber 37. The discharge pipe 36 connected to the discharge port 36d is connected to the suction / discharge valve device V. Inlet and exhaust valve device V
Is composed of a valve box 81 and a valve body 82. The valve box 81
Is supported by the upper wall of the fresh water tank Tw, and is vertically divided into four parts as shown in FIGS. _{1, p 2, p 3,} p 4 and are provided in parallel, the upper surface of these passages _{p 1, p 2, p 3} , p 4 is open to the outside either. The first lower fluid passageway p ₁ is an air passage 8
3 communicates with the upper portion of the separator chamber Cs through the second lower fluid passageway p ₂ is directly open to the air chamber 37, the third fluid passage p ₃ is of the blower B, the pair of the discharge pipe 36 communicates with the further lower portion of the fourth fluid passage p ₄ is opened to the atmosphere via the other air passage 84 and a silencer 85.

On the upper surface of the valve box 81, a cap-shaped valve element 82 is provided.
Are rotatably supported by a valve shaft 87 which is covered and is provided upright at the center of the valve box 81. The inside of the valve body 82 is partitioned into a first valve chamber 89 and a second valve chamber 90 by a radial partition plate 88. . An operating arm 91 is fixed to the upper end of the valve body 82, and the tip of the operating arm 91 is fixed to an upper wall of the fresh water tank Tw at an appropriate position.
The distal end of the air cylinder 93 is connected, and the valve body 82 is reciprocated about 90 ° around the valve shaft 87 to be switched by the expansion and contraction operation of the air cylinder 93. When the valve body 82 is at the pressure reducing position as shown in FIGS. 4 and 5, the valve body 82 is connected to the first and second fluid passages p ₁ and p ₁ ,
p ₂ and the third, every fourth fluid passage p _3, p ₄ and in communication with Te respectively, also the valve body 82 is controlled to about 90 ° rotation, switching to the pressure position as shown in FIGS. 6 and 7 When
The valve body 82 can keep the first and third fluid passages p ₁ and p ₃ and the second and fourth fluid passages p ₂ and p ₄ in communication with each other.

As shown in FIG. 3, the separator chamber Cs and the sludge chamber 20 communicate with each other via a first air pipe 38, and the opening end of the first air pipe 38 on the separator chamber Cs side is connected to the separator chamber. The float valve 40 is provided at the lower end of the Cs and at the open end of the sludge chamber 20 side.
Further, the separator chamber Cs is connected to the separation chamber 19 and the atmosphere via a second air pipe 39, and the second air pipe 3
9 is provided with a float valve 41 at a portion communicating with the separation chamber 19. The first and second air release valves 4 are provided above and downstream of the communication portion of the second air pipe 39 with the separation chamber 19.
When the first and second air release valves 42 and 43 are both opened, the separator chamber Cs is communicated with the atmosphere. When only the second air release valve 43 is opened, the separator chamber Cs is opened. Cs is communicated with the separation chamber 19.

Next, the water circuit Cw connected to the water pump P, the tank assembly T and the hoses 13 and 15 will be described with reference to FIG.

A discharge circuit 46 is connected to a discharge port of the water pump P, a four-way branch joint 47 is connected to an end thereof, and an external cleaning circuit 17 is connected to one of the connection ports.
This circuit 17 is provided with a cleaning valve 44 in the middle thereof.
Hose 13 through the communication passage 13 ₁ provided on the large hose reel 10 is communicated at its end. The other two connection ports of the branch joint 47 are connected to another external cleaning circuit 48 and a cleaning circuit 49 in the tank, and the other external cleaning circuit 48 is connected to the hose 15. The end of 49 is connected to a jet nozzle 50 provided on the bottom wall at the front end of the separation chamber 19 of the pressure tank Tp. Other external cleaning circuit 48 and tank cleaning circuit 49
Are connected to open / close valves 51 and 52, respectively.

The water suction circuit 45 connected to the suction port of the water pump P is branched into first, second and third branch pipes 53, 54 and 55, and the first branch pipe 53 is connected to a first opening / closing valve 57. The second branch pipe 54 is opened to the atmosphere through
It communicates with the lower part of the separation chamber 19 via the opening / closing valve 58,
Further, the third branch pipe 55 is connected to the third opening / closing valve 59 and the first
The tank is connected to a lower portion of the fresh water tank Tw via a recycle valve 60. Further, a fourth branch pipe 56 is branched from the third branch pipe 55 in the middle of the third opening / closing valve 59 and the first recycle valve 60.
A second recycle valve 61 is interposed midway.
The open end of the fourth branch pipe 56 is opened into the separation chamber 19, and the secondary filtration device 28 is connected thereto.

Drain valves 64, 66 and 67 are connected to the bottoms of the water pump P, the fresh water tank Tw and the separator chamber Cs, respectively.

A suction valve 70 and a discharge valve 71 are provided at the upper, lower, middle and lower portions of the tailgate 5, and the suction valve 70 is used to suction a fluid other than sludge into the sludge chamber 20, The discharge valve is used to discharge the fluid contained in the pressure tank Tp.

Next, the operation of this embodiment will be described mainly with reference to FIGS.

8 to 13, the open / close valve, the air release valve, the cleaning valve, the recycle valve, the drain valve, etc., when their ports are white, indicate the open state, and when the ports are black, indicate the closed state. In the water piping, a hatched portion on the lower left indicates the flow of water, and in the air piping, a hatched portion on the lower right indicates the flow of air, and further, a portion with spots on the hatched lower left indicates the flow of sludge water.

[0031]. Suction of the sludge water in the pressure tank (FIG. 8)
The sludge is stored in the 4 by the action of sucking the sludge chamber 20 together with the sewage, by switching operations of the intake and exhaust valve device V in the pressure reducing position as shown in FIGS. 4 and 5, first, second fluid passage p _1, p ₂ and the third, placing fourth fluid passage p _3, p ₄ to the respective communication status. Thereby, the suction pipe 35 of the blower B
Communicates with the separator chamber Cs through the air chamber 37, the suction / discharge valve device V, and the air passage 83, and the discharge pipe 36 of the separator chamber Cs.
Is a suction / discharge valve device V, another air passage 84 and a silencer 8
It communicates with the atmosphere via 5. Thereby, the separator chamber C
s is reduced to a negative pressure, and the air in the sludge chamber 20 of the pressure tank Tp is supplied to the first air pipe 3 as shown by arrow c in FIG.
8 and the separator chamber Cs via the float valve 40
And the pressure inside the sludge chamber 20 is reduced. Here, the open / close valve 29 is opened, and the open end of the suction pipe 32 is connected to the sewer 3
When the sludge is inserted into the sludge water in 4, the sludge can be sucked and stored in the sludge chamber 20 as shown by an arrow d in FIG. In this case, the check valve 27 is closed by the negative pressure in the sludge chamber 20, so that sludge water does not flow into the separation chamber 19.

In the meantime, in the air suction operation in the pressure tank Tp, the air in the pressure tank Tp is guided to the lower part in the separator chamber Cs through the first air pipe 38, and the contaminants such as dusts are temporarily removed. You. The air in the separator chamber Cs is guided to the suction / discharge valve device V in the air chamber 37 through the air passage 83. It entered the air in the valve V, fresh water tank T through than the second passage p ₂ first passage p ₁ as described above
The air enters the air chamber 37 at the top of the w, where dust and other contaminants in the air are secondarily removed and fall on the water surface in the tank Tw. The air in the air chamber 37 is sucked into the blower B through the suction pipe 35. In this case, since the blower B is a liquid ring type, its operation is performed without any trouble. The pressurized air from the blower B flows from the discharge pipe 36 to the third passage p ₃ of the suction and discharge valve device V,
Through the fourth passage p _4, it is released to the atmosphere still further air passage 84, through the silencer 85.

As described above, in the air sucked from the pressure tank Tp, the contaminants such as dust mixed therein are removed, so that clean air can be released to the atmosphere.

[0034] Pressurized recycle operation (FIG. 9) This is to pressurize the pressure tank Tp to first-filtrate the sewage in the sludge stored in the sludge chamber 20 while separating and transferring the sewage from the sludge chamber 20 to the separation chamber 19 by pressure. Is filtered and purified again, and the valve 29 is switched to the pressurized position as shown in FIGS. by controlling the body 82 approximately 90 ° rotation, the intake valve device V and the discharge pipe 36 and the first passage p ₁ and the third passage p ₃ and the second passage p ₂ a fourth passage p ₄ as communicating state respectively It communicates with the separator chamber Cs via the air passage 83, communicates the suction pipe 35 with the atmosphere via the suction / discharge valve V device, the other air passage 84 and the silencer 85, and is further separated by opening the first air release valve 42. The chamber 19 is connected via a second air pipe 39 After opening the gas, by driving the blower B, the first air pipe 38 from the separator chamber Cs as pressurized air is indicated by an arrow e in FIG. 9 therefrom, through the float valve 40 sludge chamber 20
And the inside of the sludge chamber 20 is pressurized to a high pressure. As a result, the sewage in the sludge is primarily filtered through the primary filtration device 28 as shown by arrow f in FIG.
The pressure is sent to the separation chamber 19 through the communication passage 25 and the check valve 27. At that time, the air in the separator chamber Cs is discharged to the atmosphere through the second air pipe 39 as shown by an arrow g in FIG. When the stored water in the separation chamber 19 reaches a predetermined level, that is, when the water reaches the window provided above the pressure tank Tp, the pressurization of the sludge chamber 20 is stopped.

[0035] Pressurizing and discharging operation (FIG. 10) The sludge that has been sucked and stored in the sludge chamber 20 and from which water has been separated is dumped as shown in FIG. 2 where the tank assembly T can be dumped as described above. Although the sludge is discharged, the sludge in the sludge chamber 20 is discharged by the following pressurizing action where the tank assembly T cannot be dumped, such as in a room.
When the first recycle valve 60 is opened, the second recycle valve 61 is closed, and the discharge valve 71 is further opened from the state shown in FIG. 9, the sludge in the sludge chamber 20 as shown by an arrow h in FIG. Can be discharged under pressure. In this case, the water pump P is not driven.

[0036] Cleaning action in the pressure tank (FIG. 11) This is an action of cleaning the pressure tank Tp with fresh water, and the partitioning wall 18 is rotated about 90 ° from the closed position by the extension operation of the open / close cylinder 23 (FIG. 1) to be substantially horizontal. In the open position. After the second recycle valve 61 is closed, the first recycle valve 60 and the third open / close valve 59 are opened, and the water pump P is driven, the fresh water stored in the fresh water tank Tw in advance becomes the arrow in FIG. As shown in i, the water is sucked into the water pump P through the third branch pipe 55 and the suction circuit 45, and the pressurized water therefrom is discharged as shown by an arrow j in FIG. 4
9, the gas is jetted from the jet nozzle 50 into the pressure tank Tp, and the inside of the pressure tank Tp can be cleaned.

[0037] Cleaning action outside the tank (FIG. 12) This is an action of cleaning the outside of the tank, such as the outer surface of the tank assembly T and its surroundings, with fresh water in the fresh water tank Tw, by closing the open / close valve 52 from the state of FIG. 51
, The high-pressure water can be supplied from the discharge circuit 46, the branch joint 47 and the other external cleaning circuit 48 to the cleaning gun 16 through the hose 15 as shown by the arrow k in FIG. By pulling out the hose from the reel 12, the outer surfaces of the pressure tank Tp and other devices can be washed with pressure washing water.

[0038] Washing action of sewerage (FIG. 13) This is an action of washing the sewerage with high-pressure water from the water pump P, and the water after the primary filtration has already been stored in the separation chamber 19 by the above-described pressurized recycling action. . According to the driving of the water pump P, the stored water after the primary filtration is used for the secondary filtration device 2
8, after the secondary filtration and purification, the arrow a in FIG.
As shown by, the water is sucked into the water pump P from the fourth and third branch pipes 56 and 55 through the suction circuit 45. Cleaning valve 44
The high-pressure water from the water pump P is opened by the arrow b in FIG.
As shown in (1), it is pressure-fed to the cleaning nozzle 14 through the discharge circuit 46, the external cleaning circuit 17 and the hose 13. After the hose 13 is pulled out from the large hose reel 10 and the washing nozzle 14 is inserted into the sewer 34, and this is opened,
High-pressure water is sprayed from there, and the sewer 34 is cleaned cleanly and efficiently. At this time, the cleaning nozzle 14 can move forward in the sewer 34 due to the reaction force of the cleaning water injected behind the cleaning nozzle 14. it can.

Although one embodiment of the present invention has been described above, the present invention is not limited to the embodiment, and various embodiments are possible within the scope of the present invention. For example, in addition to the sludge water, another contaminated fluid may be collected by suction.

[0040]

As described above, according to the present invention, a pressure tank and a water tank mounted on a vehicle body frame, and a blower communicating with the pressure tank and capable of reducing or increasing the pressure in the pressure tank, And a water pump communicating with the pressure tank and the water tank and capable of sucking water stored in the tanks. In the tank vehicle, the blower is disposed in the water tank, and an upper part of the water tank is provided. A suction / discharge valve device for selectively switching communication between the suction pipe and the discharge pipe of the blower between the pressure tank and the outside air in the air chamber; and either one of the suction pipe and the discharge pipe and the suction / discharge valve apparatus The air chamber is interposed between the blower and the intake / exhaust valve device without reducing the effective volume on the vehicle body frame. As a result, the loading efficiency of the pressure tank and the water tank on the vehicle body frame is reduced. The air pipe structure between the blower and the suction and exhaust valve device can be simplified, the exposed portion of the air pipe can be reduced, and contaminants such as dust mixed into the suction air can be reduced. It can be removed in a water tank, preventing the release of polluted air to the atmosphere and without damaging the surrounding environment.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view of the tank vehicle of the present invention.

FIG. 2 is a side view of a tank vehicle when dumping a tank assembly.

FIG. 3 is an overall schematic diagram of an air circuit and a water circuit.

FIG. 4 is a schematic perspective view of a blower, a suction / discharge valve device, and a piping system thereof when the pressure tank is depressurized.

FIG. 5 is a transverse sectional view taken along line 5-5 in FIG. 4;

FIG. 6 is a schematic perspective view of a blower, a suction / discharge valve device, and a piping system thereof when the pressure tank is pressurized.

FIG. 7 is a cross-sectional view taken along the line 7-7 in FIG. 6;

FIG. 8 is a drawing of the suction action of sludge water.

FIG. 9 is a pressurized recycling action diagram.

FIG. 10 is a pressurized discharge action diagram.

FIG. 11 is a diagram showing a cleaning operation in a pressure tank.

FIG. 12 is a diagram showing a cleaning operation outside the pressure tank.

FIG. 13 is a diagram of a sewer cleaning operation.

[Explanation of symbols]

 35 ... suction pipe 36 ... discharge pipe 37 ... air chamber B ... blower Cs ... separator chamber F ... body frame Tp ... pressure tank Tw ... water tank ( (Shimizu tank) V: Inlet and exhaust valve device

Claims (1)

(57) [Scope of request for utility model registration] 1. A pressure tank (Tp) and a water tank (Tw) mounted on a vehicle body frame (F) communicate with the pressure tank (Tp), and the pressure in the pressure tank (Tp) is reduced or increased. And a water pump (P) which communicates with the pressure tank (Tp) and the water tank (Tw) and which can suck the water stored in the tanks (Tp, Tw). In the tank vehicle, the blower (B) is disposed in the water tank (Tw), and the suction pipe (35) of the blower (B) is provided in an air chamber (37) in the upper part of the water tank (Tw). A suction / exhaust valve device (V) for selectively switching the discharge pipe (36) between the pressure tank (Tp) and the outside air is provided, and one of the suction pipe (35) and the discharge pipe (36) is provided; Between the air chamber (37) and the suction / discharge valve device (V). ). A tank vehicle characterized by interposing.