JP2569522Y2 - Cleaning device for filter in pressure tank - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided for cleaning a filter installed in a pressure tank, especially a pressure tank mounted on a vehicle, for filtering a fluid such as sludge stored therein.
The present invention relates to a device for cleaning a filter in a pressure tank.

[0002]

2. Description of the Related Art Conventionally, a closed pressure tank mounted on a vehicle is divided into front and rear by a partition wall, and a washing and sewage treatment is performed in which a washing water is stored in a front chamber and a sludge water is sucked and stored in a rear chamber. Vehicles are known (see Japanese Utility Model Publication No. Sho 56-11983).

[0003]

SUMMARY OF THE INVENTION The applicant of the present invention recycles such a vehicle by separating sludge water sucked into a pressure tank into solids and water, and reusing the separated water as washing water. Means have been proposed, but in order to filter sludge water in a pressure tank and separate it into water and solid matter, since the sludge contains various sticky and miscellaneous substances, a filter is required. There is a disadvantage that the filter function is impaired due to clogging within a short period of time, and that cleaning of the filter is extremely troublesome.

The present invention has been made in view of such circumstances, and can efficiently separate sludge water and water from solids in a pressure tank and clean a filter used for the separation. It is an object of the present invention to provide a novel pressure tank cleaning device for a filter in a pressure tank, which can be surely and efficiently performed.

[0005]

In order to achieve the above object,
The features of the present invention are a sealed pressure tank,
A partition wall for partitioning the inside of the pressure tank into a first chamber and a second chamber after and a first chamber and a second chamber provided on the partition wall;
A communication passage communicating with the chamber, and a filter provided in the communication passage, which pressurizes one of the first and second chambers to permit filtration and transfer of the fluid only from one of them to the other. And a check valve, and a cleaning device provided on the filter to clean the filter, wherein the cleaning device is provided slidably on a filter element of the filter so as to reciprocally adhere to the surface thereof. It consists of a filter cleaner for scraping off and an actuator for reciprocating the filter cleaner.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment in which a filter cleaning device for a pressure tank according to the present invention is applied to a washing and water absorbing vehicle.

FIG. 1 is a partially cutaway side view of a washing and water absorbing vehicle equipped with a filter cleaning device for a pressure tank according to the present invention, and FIG. 2 is a side view of the vehicle when the tank assembly is dumped. .

The body frame F of the vehicle for washing and absorbing water 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 provided with a hinge pin. 1 is linked to the sub-frame S. Tank frame T
A telescopic dump cylinder 2 is connected between the front end of the f and the sub-frame S, and the tank frame Tf can be tilted backward around the hinge pin 1 by the extension operation of the cylinder 2.

A tank assembly T is integrally mounted on the tank frame Tf. The tank assembly T has a closed large-capacity pressure tank Tp in the rear half thereof and a small-capacity pressure tank Tp in 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 blower B is integrally mounted on a tank frame Tf on one side of the fresh water tank Tw, and a water pump P is integrally mounted on a 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 washing and water absorbing vehicle via a PTO (power take-out device).

The pressure tank Tp is formed on a cylinder, and a discharge port 3 is opened on the rear surface thereof.
Is opened and closed by a tail gate 5 pivotally supported on the upper part thereof. The tailgate 5 has a pivot 6 on the pressure tank Tp.
The free end of the opening / closing cylinder 7 is connected 8, 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 washing nozzle 14 is attached to a free end of a hose 13 wound around the large hose reel 10.
A cleaning gun 16 is attached to a free end of a hose 15 wound around the hose.

The interior of the pressure tank Tp is divided by a partition wall 18 into a first chamber, ie, a separation chamber 19, and a second chamber, ie, a sludge chamber 20. The partition wall 18 includes a separation chamber 19.
The pressure chamber Tp is formed in a convex spherical shape on the side, and is supported by the support shaft 21 on both side walls of the pressure tank Tp so as to be openable and closable.
And the sludge chamber 20 are separated 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 the upper part 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 inside of the high-pressure tank Tp stands up in a fluid-tight manner 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 and the sludge chamber 20 is provided through the separation wall 18. In the communication passage 25, a filtration device Fi for transferring moisture in the sludge chamber 20 to the separation chamber 19 while filtering the water.
Is provided.

Next, the structure of the filter Fi will be described with reference to FIG.
This will be described with reference to FIGS. 3 is an enlarged partial view taken along line 3 of FIG. 1, FIG. 4 is a partial view taken along line 4 of FIG. 3, and FIG.
In these figures, the open end of the communication passage 25 penetrating the partition wall 18 on the sludge chamber 20 side is
It communicates with a box-shaped filtration chamber 81 supported on the back of the partition wall 18 via a stay 80. A first filter 26 is provided on an opening surface of the filtration chamber 81 that opens into the sludge chamber 20. The first filter 26 has a rectangular frame 26.
₁ is constructed by fixing a mesh-shaped filter element 26 _2, the filter element 26 _{and second} surface is formed into a flat surface.

A half portion of the communication passage 25 on the side of the separation chamber 19 is bent upward, and a check valve 27 for allowing a fluid to flow only from the sludge chamber 20 to the separation chamber 19 is attached to an open end thereof. Pressurize the sludge chamber 20 as described later,
If the separation chamber 19 is communicated with the atmosphere, the water in the sludge water stored in the sludge chamber 20 can be transferred to the separation chamber 19 through the communication passage 25 and the check valve 27 after being filtered by the first filter 26.

The filtering device Fi includes a cleaning device Cl.
Is provided. The cleaning device Cl includes a filter cleaner 8.
2 and an actuator for operating the actuator 2, that is, an air cylinder 86. This filter cleaner 82
Is constructed by securing the frame 26 box-shaped cross section chevron-shaped scraper 84 to the cleaner frame 83 slidably fitted vertically to _1, so this scraper 84 for covering the filter element 26 _{and second} surface Formed approximately the same width as the
The upper and lower edges of the edge portions 84 ₁ abuts on the filter element 26 _second surface.

An upwardly extending stay 85 is fixed to the frame 26 ₁ of the first filter 26.
The actuator, that is, the base end of the air cylinder 86 is connected with a pin 87. The air cylinder 86 extends downwardly into the filter element 26 ₂ substantially, its lower end is connected to the center portion of the cleaner frame 83.

According to the expansion and contraction operation of the air cylinder 86, the scraper 84 slides up and down the filter cleaner 82 along the frame 26 ₁ is off the sludge adhering to the surface thereof slides on the filter element 26 ₂ Can be dropped.

Returning to FIG. 1, a turning cylinder 31 is supported on the rear upper wall of the pressure tank Tp so as to be freely rotatable.
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 in a communicating portion between the suction pipe 32 and the suction port 33, and extends outwardly from the support boom 30 at a distal end thereof.
It can be inserted inside.

FIG. 6 shows an air circuit Ca and a water circuit Cw.
Is shown in FIG.

Next, an air circuit Ca connected to the blower B and the tank assembly T will be described with reference to FIG.

Discharge pipe 35 connected to the discharge port of blower B
Is operated by the switching operation of the pressure switching valve 37.
Passed off換連₁ or through the atmosphere opening port 37 ₂ to the separator chamber Cs or air, also switching the suction tube 36 connected to the suction port of the blower B is also through the pressurized pressure switching valve 37 to the atmosphere or the separator chamber Cs It is designed to communicate.

The separator chamber Cs and the sludge chamber 20 communicate with each other via a first air pipe 38. A float valve 40 is provided at the open end of the first air pipe 38 on the sludge chamber 20 side.
Is provided. Further, the separator chamber Cs is communicated with the separation chamber 19 and the atmosphere via a second air pipe 39, and a float valve 41 is provided at a portion where the second air pipe 39 communicates with the separation chamber 19. Also, the second air pipe 39
First and second air bleed valves 42 and 43 are provided above and downstream of the communication portion to the separation chamber 19, respectively. If both the first and second air bleed valves 42 and 43 are opened, the separator chamber is opened. Cs is communicated with the atmosphere, and if only the second air release valve 43 is opened, the separator chamber Cs is separated from the separation chamber 19.
Is to be communicated with.

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 high-pressure water pipe 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.

Water suction pipe 4 connected to the suction port of water pump P
5 is the first, second and third branch pipes 53, 54 and 5
5, the first branch pipe 53 is opened to the atmosphere via a first opening / closing valve 57, and the second branch pipe 54 is communicated with the lower part of the separation chamber 19 via a second opening / closing valve 58. The third branch pipe 55 is connected to a lower portion of the fresh water tank Tw via a third opening / closing valve 59 and a first recycle valve 60. Furthermore, the third branch pipe 55
A fourth branch pipe 56 is branched from the middle of the opening / closing valve 59 and the first recycle valve 60, and a second recycle valve 61 is interposed in the middle of the branch pipe 56. The open end of the fourth branch pipe 56 is opened in the separation chamber 19, and the second filter 62 is connected thereto.

First, second, third, and fourth drain valves 64, 65, 66, and 67 are connected to the water pump P, the pressure switching valve 37, the fresh water tank Tw, and the bottom of 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 tail gate 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.

In FIGS. 7 to 12, 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 the black ones 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.

[0032] Washing action of sewer (FIG. 7) This is an action of washing sewers, drain pipes, and the like by high-pressure water from the water pump P. According to the driving of the water pump P, the separating chamber 19 of the pressure tank Tp is described later. The stored water previously stored by the pressurized recycling action is filtered by the second filter 62, and then passes through the fourth and third branch pipes 56 and 55 and the water absorption pipe 45 as shown by an arrow a in FIG. Sucked into water pump P. By opening the cleaning valve 44, the high-pressure water from the water pump P is pressure-fed to the cleaning nozzle 14 through the high-pressure water pipe 46, the external cleaning circuit 17 and the hose 13 as shown by an arrow b in FIG. After the hose 13 is pulled out from the large hose reel 10 and the washing nozzle 14 is inserted into the sewer or the drain pipe, if this is opened, high-pressure water is jetted from there, and the sewer 34 is cleaned efficiently and efficiently. The cleaning nozzle 14 can be advanced in the sewer 34 by the reaction force of the cleaning water injected behind the cleaning nozzle 14.

[0033] The suction operation of the sludge water in the pressure tank (FIG. 8) This is an operation of sucking the sludge water stored in the sewer 34 into the sludge chamber 20. The switching operation of the pressurization switching valve 37 causes the suction pipe 36 of the blower B to move. communicates with the separator chamber Cs through and out port 37 ₁ and by driving the blower B after communicating with the atmosphere and the discharge pipe 35 through the air open port 37 _2, the separator chamber Cs is depressurized by vacuum The air in the sludge chamber 20 of the pressure tank Tp is indicated by an arrow c in FIG.
As shown in the figure, the first air pipe 38 and the float valve 4
0, and is sucked into the separator chamber Cs through the sludge chamber 2.
The pressure inside 0 is reduced. Here, when the open / close valve 29 is opened and the open end of the suction pipe 32 is inserted into the sludge water in the sewer 34, the sludge water is discharged into the sludge chamber 20 as shown by an arrow d in FIG.
Can be sucked and stored inside.

[0034] Pressurized recycling operation (FIG. 9) This is an operation in which the water in the sludge water stored in the sludge chamber 20, that is, tap water, is transferred from the sludge chamber 20 to the separation chamber 19 under pressure and the water is reused as washing water or the like. After the opening and closing valve 29 is closed, the blower B
Of the suction tube 36 open to the atmosphere through the atmospheric air open port 37 _2, and communicates with the separator chamber Cs through and out port 37 ₁ and the discharge pipe 35, separated by further opening of the first vent valve 42 When the blower B is driven after the chamber 19 is opened to the atmosphere through the second air pipe 39, the pressurized air therefrom is supplied to the separator chamber C as shown by an arrow e in FIG.
s through the first air pipe 38 and the float valve 40 to the sludge chamber 20, and the inside of the sludge chamber 20 is pressurized to a high pressure. As a result, the tap water in the sludge water is filtered through the first filter 26 as shown by the arrow f in FIG. 9 to separate the sludge, and then passes through the communication passage 25 and the check valve 27 to separate the separation chamber 1.
9 to be pumped. At that time, the air in the separator chamber Cs is discharged to the atmosphere through the first 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 window provided above the pressure tank Tp is reached,
The pressurization of the sludge chamber 20 is stopped.

As the above operation is continued, sludge gradually accumulates on the surface of the first filter 26 and finally blocks the surface, impairing the filtration function. In this case, the cleaning device Cl is operated. That is, if the air cylinder 86 is extended and retracted, the filter cleaner 82 is reciprocated along the frame 26 ₁ , whereby the scraper 84 can scrape off the sludge attached to the surface of the first filter 26.

The water stored in the separation chamber 19 is used as washing water by the above-described operation.

[0037] 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.

[0038] 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 opening / closing valve 59 are opened, and the water pump P is driven, the fresh water stored in the fresh water tank Tw in FIG. As shown by the arrow i, the water is sucked into the water pump P through the third branch pipe 55 and the water suction pipe 45, and the pressurized water therefrom is fed by the high-pressure water pipe 46, the branch joint 47, and the cleaning in the tank as shown by the arrow j in FIG. Circuit 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.

[0039] 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 to the cleaning gun 16 through the hose 15 from the high-pressure water pipe 46, the branch joint 47 and the other external cleaning circuit 48, 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.

In the above embodiment, the case where the filter cleaning device in the pressure tank according to the present invention is applied to a washing and water absorbing vehicle has been described. However, it is needless to say that this may be applied to another pressure tank. The cleaning device may be operated by another actuator, for example, a hydraulic cylinder, in addition to the air cylinder.

Further, in the above-mentioned embodiment, the case where the sludge water in the sewerage or the like is sucked into the pressure tank has been described. However, another external fluid may be sucked.

The pressure tank and fresh water tank can be used in various other ways. For example, the partition wall may be opened, and the first and second chambers of the pressure tank may be both sludge water storage tanks, and the first chamber of the fresh water tank and the pressure tank may be both fresh water tanks. Each of the first and second chambers of the fresh water tank and the pressure tank may be a fresh water tank.

[0043]

As described above, according to the present invention, a sealed pressure tank, a partition wall for partitioning the inside of the pressure tank into a first chamber and a second chamber after and behind the pressure tank are provided on the partition wall. And a communication path communicating the first chamber and the second chamber, and one of the first and second chambers being provided in the communication path and pressurizing one of the first and second chambers, from one of them to the other. Only fluid filtration,
The filter comprises a filter and a check valve permitting transfer, and a cleaning device provided on the filter to clean the filter. The cleaning device is provided on the filter element of the filter so as to be reciprocally slidable and provided on the surface thereof. Since it is composed of a filter cleaner that scrapes off adhering substances and an actuator that reciprocates the filter cleaner, the fluid such as sludge water stored in the pressure tank is efficiently filtered in the pressure tank to form water and solids. A filter which can be separated into an object and filters the fluid can be automatically and simply and easily cleaned by a cleaning device, and the efficiency of filtering and separating the fluid can be greatly improved.

[Brief description of the drawings]

FIG. 1 is a partially broken side view of a washing and water absorbing vehicle.

FIG. 2 is a side view at the time of dumping the tank assembly of the washing and water absorbing vehicle.

FIG. 3 is an enlarged partial view taken along line 3 of FIG. 1;

FIG. 4 is a partial view taken along line 4 of FIG. 3;

FIG. 5 is a partial view taken along line 5 of FIG. 3;

FIG. 6 is an air and water circuit diagram of a washing and water absorbing vehicle.

FIG. 7 is a diagram showing a cleaning operation of a sewer.

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.

[Explanation of symbols]

Reference Signs List 18 Partition wall 19 First chamber (separation chamber) 20 Second chamber (sludge chamber) 25 Communication passage 26 Filter (first filter) 26 ₂ Filter element 27 Check valve 82 Filter cleaner 86 Actuator (air cylinder) Tp Pressure tank Cl Cleaning apparatus

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI B01D 29/04 530D 35/02 F

Claims (1)

(57) [Scope of request for utility model registration] 1. A sealed pressure tank (Tp), and a first chamber (19) before and after inside the pressure tank (Tp).
A partition wall (18) for partitioning into a second chamber (20); and a first wall (19) provided on the partition wall (18).
A communication path (25) that communicates with the second chamber (20); and a communication path (25) provided in the communication path (25) to pressurize one of the first and second chambers (19, 20). A filter (26) and a check valve (27) permitting the filtration and transfer of the fluid only from one side to the other; and a filter (26) provided on the filter (26).
And a cleaning device (Cl) for cleaning the filter (2).
6) a filter cleaner (82) which is slidably reciprocated on the filter element (26 ₂ ) to scrape off the deposits adhering to the surface of the filter element (26 ₂ );
2. An apparatus for cleaning a filter in a pressure tank, comprising: an actuator (86) for reciprocally operating 2).