JPH09133340A - Method for continuously supplying fluid and apparatus therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to supply sludge, etc., liquid supply vessel even when the head between the vessel for supplying a treating liquid and the liquid level of the sludge is large by charging the liquid from a liquid charging port to the vessel by feeding it under pressure. SOLUTION: A truck 2 is moved to the place of a treating sludge storage unit 4. Then, sludge 4 is stored in a sludge supply vessel 6. In this case, the head between the liquid level 5a of the sludge 5 of the unit 4 and the liquid charging port 11 of the vessel 6 exceeds, for example, 7 meters. In case that the sludge 5 is desired to be charged in the vessel 6 in a short time, a pressure feeding means P made of an underwater pump 14 provided at the end part of a hose 10 is driven to feed the sludge 5 of the unit 4 under pressure. When a plurality of the means P are provided, even if the port 11 of the vessel 6 is disposed in any height, the sludge 5 can be charged and fed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid constant quantity supply method for supplying a fluid such as a treatment liquid such as sludge dredged to a treatment means such as a filtration device so that the water level is always kept substantially constant. The present invention relates to a liquid constant quantity supply device.

[0002]

2. Description of the Related Art As an apparatus of this type, for example, a petroleum oil having a structure in which a fuel inlet / outlet is provided at the bottom of a closed container type fuel tank and the fuel inlet / outlet is closed by a cap whose supply hole is closed and urged Cartridge type fuel tanks mounted on stoves are well known.

In such a cartridge type fuel tank, when kerosene as a fuel is put in the fuel tank, the cap provided at the bottom of the fuel tank is turned up, the cap is removed, and a predetermined amount of kerosene is injected from the inlet / outlet of the fuel, and then the cap is capped again. To close the fuel inlet / outlet, and in this state, attach it to the oil stove with the bottom of the fuel tank facing down. Thus, in the fuel tank mounted on the oil stove, the supply hole of the cap is opened by the valve opening operation rod provided on the oil stove, the kerosene in the fuel tank is supplied, and the supplied liquid surface closes the supply hole. When the fuel tank becomes a closed container in, the weight from the liquid surface position of kerosene supplied to the oil stove to the liquid surface of kerosene in the fuel tank is balanced with the negative pressure formed above it, as the air flow is cut off. In this state, the kerosene supply stops from the supply hole.

Further, when the liquid level of kerosene supplied by the use of the oil stove is lowered and the supply hole opened by the valve opening operation rod is exposed to the air above the liquid level of kerosene, air enters from the supply hole. , The negative pressure above the fuel tank weakens and kerosene is supplied to the oil stove from the supply hole, so the liquid level of the oil stove rises, the supply hole is closed again, and the supply of kerosene from the supply hole is stopped. It is.

However, in the structure of the fuel tank mounted on the above-mentioned conventional oil stove, when kerosene is put in the fuel tank, the fuel tank is once inverted and the supply hole is opened up and then opened, and kerosene is put in from here. After that, it had to be closed and then turned over again and mounted on the oil stove, which was troublesome and had a problem of poor workability. Further, there is also a problem that kerosene is often soiled by the hands or scattered around when the supply holes are opened or closed.

Further, when kerosene is put in the fuel tank and the fuel tank is closed, the space above the kerosene is at atmospheric pressure. When the fuel tank is inverted and attached to the oil stove and the supply hole is opened, the fuel is opened. A large amount of kerosene in the fuel tank is supplied from the supply hole until the weight of kerosene in the tank is balanced with the negative pressure formed in the space above the kerosene, which may cause overflow.

[0007] Therefore, as a result of earnest research to solve the above problems, the present inventor first proposed what is shown in Japanese Patent Application No. 6-260417. According to this prior application, sludge or the like is supplied to a liquid receiving tank (fluid reservoir) of a filtering device (processing means), and sludge or the like is supplied from this liquid receiving tank to an intermediate device for dehydration /
It is for filtering and is equipped with a liquid receiving tank of the filtering device and a liquid supply container that can be sealed and is located above the liquid receiving tank.The liquid supply container communicates with the dredging sludge storage section via an on-off valve. And a negative pressure supply port communicating with the negative pressure forming device via an opening / closing valve, and a fluid supply port provided with an opening / closing valve at the bottom of the container, and the lower end opening of the fluid supply port. The section is configured to open below the storage upper limit position of the sludge stored in the liquid receiving tank.

[0008]

However, in this prior application, since the sludge is sucked into the liquid supply container by the negative pressure supplied from the negative pressure supply port, the liquid supply container and the sludge are not separated. When the drop with the liquid surface exceeds, for example, 7 meters, there is a problem that sludge cannot be sucked into the liquid supply container.

Therefore, the present invention has been proposed in view of the above problems, and has the advantage of the previous application that the fluid such as sludge to be supplied can be touched or scattered or overflowed can be eliminated by a simple operation. It is an object of the present invention to make it possible to supply the sludge and the like to the liquid supply container while making the best use of it, and further when the drop between the liquid supply container and the liquid surface of the sludge is large.

[0010]

In order to achieve the above object, a liquid continuous supply method according to the present invention is such that, when a processing fluid filled in a container is supplied to the processing means for processing, a fluid reservoir from the container to the processing means. A liquid continuous supply method for continuously operating the processing means while keeping the liquid level of the processing fluid supplied to the chamber substantially constant, wherein the processing liquid is pumped or a negative pressure in the container is applied to the container from the fluid filling port. After closing, the fluid filling port is closed and sealed, the fluid supply port is located below, and the fluid reservoir of the processing means is arranged below the fluid supply port, and then the fluid supply port is opened or negative pressure is applied. After the negative pressure of the supply means is applied to the container, the fluid supply port is opened to suck the outside air from the lower end opening of the container or the processing fluid in the container is caused to flow out. Block the lower end of the fluid supply port Supplying fluid from the fluid supply port by cutting off the inflow of air into the container and balancing the negative pressure above the container and the weight due to the head difference from the liquid surface of the processing fluid in the container to the liquid surface of the fluid reservoir Is to stop.

Next, the fluid continuous supply apparatus according to the present invention comprises a processing means having a fluid storage section and a fluid supply means for supplying a processing fluid to the fluid storage section, and the fluid supply means supplies the fluid. A sealable container for storing, a fluid filling port for filling the processing liquid into the container, a negative pressure supply port for applying a negative pressure in the container, and a fluid supply port formed at the bottom of the container are provided. An on-off valve or / and a pressure feeding means is provided at the filling port, and an on-off valve is provided in the fluid supply port or the fluid supply path, and a fluid constant amount supply part is formed between the fluid supply port and the fluid reservoir of the processing means. However, the fluid supply means and the processing means are separable.

Further, the fixed amount fluid supply unit is constructed by opening the lower end opening of the fluid supply port to a prescribed liquid level of the fluid storage unit, or the processing means is a rotation for filtering the processing fluid stored in the fluid storage unit. It is also characterized in that it is constituted by a drum type filtration device.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION In the fluid continuous supply device according to the present invention, when the fluid supply port is submerged in the liquid such as sludge in the fluid storage part of the processing device such as a filter or a dehydrator, the fluid storage part is provided. The liquid supply from the fluid supply port is stopped in a state where the weight of the sludge from the liquid surface of the sludge to the upper surface of the sludge in the container storing the treatment fluid such as sludge and the negative pressure formed in the space above the sludge are balanced. .

Next, when the liquid level of the sludge in the fluid storage part is lowered and the fluid supply port is exposed and opened above the liquid level of the sludge in the fluid storage part, the outside air flows into the container from this fluid supply port. , Reducing the negative pressure above the liquid in the liquid supply container. As a result, the sludge in the container flows out from the fluid supply port to the fluid reservoir, and the liquid level of the sludge rises. When the liquid level in the fluid storage part rises and the fluid supply port is submerged in the sludge, the inflow of outside air into the container is stopped, and the sludge in the container that stores the treatment fluid such as sludge from the liquid level in the fluid storage part is stopped. Since the liquid supply from the fluid supply port is stopped in a state where the weight of the sludge up to the upper surface of the sludge and the negative pressure formed in the space above the sludge are balanced, the overflow is reliably prevented.

When the container is filled with sludge or the like,
The on-off valve in the fluid supply port or the fluid supply path is closed and sludge is filled from the fluid filling port. Here, when the difference between the container and the liquid surface of the sludge to be filled in the container is small, the negative pressure of the negative pressure supply means is applied to the container from the negative pressure supply port of the container to make the inside of the container a negative pressure. When the pressure in the container becomes negative, the negative pressure causes the sludge to be sucked from the fluid filling port and filled.

On the other hand, when there is a large drop between the container and the liquid surface of the sludge to be filled in the container, the sludge is injected into the container from the fluid filling port by the pumping means and is filled. It is also possible to apply the negative pressure of the negative pressure supply means to the container from the pressure supply port. When the storage location of sludge filled in the container and the fluid storage part of the processing device such as a filter or a dehydrator are separated, the container is separated from the fluid storage part of the processing device to store the sludge. It is carried to the vicinity of the place, where the sludge is filled in the container, and then the container is again connected to the fluid storage section of the processing apparatus for processing.

[0017]

An embodiment of the present invention will be described below with reference to the drawings. <Embodiment 1> FIG. 1 shows a schematic configuration of a sludge treatment system for quantitatively supplying the dredged sludge to a dehydrator. In the figure, reference numeral 1 generally indicates the sludge treatment system.

The sludge treatment system 1 is installed on the cargo bed portion 3 of the truck 2, and includes a sludge supply container 6 filled with sludge (treatment fluid) 5 in a dredging sludge storage unit 4 and a sludge supply container 6. A vacuum dehydrator (treatment means) D for dehydrating the supplied sludge 5, a sludge supply means (fluid supply means) S for supplying the sludge 5 to the vacuum dehydrator D, a vacuum dehydrator D and a sludge supply container 6. And a negative pressure forming device (negative pressure forming means) V for supplying a negative pressure to.

The sludge supply container 6 has a container body 9 formed in a substantially cylindrical hermetically sealed shape, and a fluid filling port 11 to which a suction hose 10 is connected to the upper end of the hermetic container body 9 and a negative pressure supply. A negative pressure supply port 13 to which the hose 12 is connected is formed, and each of the fluid filling port 11 and the negative pressure supply port 13 is provided with open / close valves 15 and 16 for opening and closing the passage thereof, and the sludge supply means S is provided. Are formed (see FIGS. 1 and 2).

Further, as shown in FIG. 1, when there is a large drop to the liquid surface 5a of the sludge 5 in the sludge supply container 6 and the dredging sludge storage section 4 and in order to shorten the filling time, the submersible pump 14 is attached to the suction hose 10. And the like is provided with a pressure feeding means P.
The bottom portion 9a of the closed container body 9 is formed in a tapered shape with a downward constriction, and the lower end portion 18a of a sludge supply port (fluid supply port) 18 having an opening / closing valve 17 at its lower end portion is a fluid of a vacuum dehydrator D described later. (Sludge) The fluid quantitative stable supply part 8 is formed by opening the sludge 5 stored in the storage part 19 below the allowable upper limit position UL.

The vacuum dewatering device D installed below the sludge supply container 6 is a horizontal cylindrical filtration drum 20 which is rotationally driven by a drive device (not shown) as shown in FIG. 2, and the filtration drum 20. The suction port 22 is opened inward toward the bottom of the inner peripheral surface of the filtration drum 20 and the left quarter of the filtration surface 23 of the filtration drum 20 immediately below the sludge supply port 18 of the sludge supply container 6. The sludge storage section 19 is provided so as to surround the upper part.

In this case, the uppermost position of the filtration surface 23 of the filtration drum 20 in the sludge storage section 19 is the theoretically allowable upper limit position UL of sludge as described above. It is set at a position slightly lower than the uppermost position of the filtration surface 23 in the portion 19. A scraping plate 24 for scraping off the dehydrated sludge is provided below the lower end of the sludge storage section 19.

The negative pressure forming device V is, as shown in FIG.
A submersible pump (pressurizing pump) 27 is installed inside a vertically-closed cylindrical water storage tank 26 that stores water 25.
6, the tip of the water discharge pipe 28 of the submersible pump 27 that extends above 6 is bifurcated, and the branched and led pressure water supply pipe 2
A jet pump MJP for supplying a negative pressure to the sludge supply container 6 is provided at one end of the 9.29 (left side in the figure), and the other end (right side in the figure) of the pressure water supply pipe 29 is also provided. Jet pumps MJP for supplying a negative pressure to the inside of the filtration drum 20 are provided and formed.

Since both jet pumps MJP have substantially the same structure, the structure of one jet pump MJP will be described. The jet pump MJP has a pressure water supply pipe 29 branched from the tip of the water discharge pipe 28, and an injection nozzle 31 for injecting pressure water metered by a flow rate control valve 30 provided in the pressure water supply pipe 29. A negative pressure forming pipe 32 installed on the downstream side of the jet flow jetted from the jet nozzle 31, and a buffer pipe 34 that supports the negative pressure forming pipe 32 and communicates with the communication pipe 33 in the water tank 26, It is composed of a negative pressure port 35 opened between the injection nozzle 31 and the negative pressure forming pipe 32, and includes an underwater pump 27, a pressurized water supply pipe 29, and an injection nozzle 3.
1. The negative pressure forming pipe 32, the buffer pipe 34, and the communication pipe 33 form a circulation path R that circulates and uses the water in the water tank 26 in an inverted U shape.

The buffer pipe 34 and the communication pipe 33 are omitted by directly inserting the negative pressure forming pipe 32 of the one jet pump MJP into the water storage tank 26. In addition, the negative pressure port 3 opened between the injection nozzle 31 and the negative pressure forming pipe 32.
No. 5 is located above the liquid level L of the water 25 in the water tank 26. This is because the water 25 stored in the water tank 26 has a negative pressure due to the Sunphon principle when the jet pump MJP is stopped. This is to prevent the suction from the forming tube 32 through the negative pressure port 35.

The operation of the fluid continuous supply apparatus of the present invention through the sludge treatment system 1 having the above-mentioned structure will be described below. First, the truck 2 is moved to the location of the sludge storage unit 4 to be treated as shown in FIG. Next, sludge supply container 6
Sludge 5 is stored inwardly, the on-off valves 15 and 16 provided at the fluid filling port 11 and the negative pressure supply port 13 are closed, and the on-off valve 17 at the sludge supply port 18 is opened, and sludge is supplied. When the mouth 18 is submerged in the sludge 5 in the sludge storage unit 19, the weight of the sludge from the liquid surface 5c of the sludge 5 in the sludge storage unit 19 to the upper surface 5b of the sludge 5 in the sludge supply container 9 and the space 3 above it.
The negative pressure formed in 6 is in balance.

In this state, the submersible pump 27 is operated to pressurize the water in the water tank 26, and the sludge is supplied from the tip of the water discharge pipe 28 through the pressure water supply pipes 29, 29 and the flow rate control valves 30, 30. Jet pump MJ that supplies negative pressure to container 6
P is supplied to each injection nozzle 31, 31 of the air-fuel mixture jet pump MJP which supplies a negative pressure to the P and the filtration drum 20.

When the pressure water supplied to the jet nozzle 31 of the jet pump MJP is jetted into the negative pressure forming pipe 32 as a jet flow, the jet nozzle 3 of the negative pressure forming pipe 32 is injected.
Negative pressure due to cavitation is formed at a portion closer to 1. The negative pressure due to this cavity is due to the fact that the air-fuel mixture jet flow that spreads all over the negative pressure forming tube 32 acts like a piston that continuously acts inside the negative pressure forming tube 32 toward the opening at the lower end. Is.

The jet flow discharged from the lower end of the negative pressure forming pipe 32 is recirculated from the buffer pipe 34 into the water storage tank 26 and pressurized by the submersible pump 27 again to be used. When this negative pressure of the jet pump MJP is supplied to the suction pipe 22 of the filtration drum 20 from the negative pressure port 35, the inside of the filtration drum 20 becomes negative pressure, and the filtration surface 2 of the sludge storage portion 19 part.
The sludge 5 is sucked from 3 and the solid mass is adsorbed and held on the filtration surface 23.

The solid mass adsorbed and retained on the filtration surface 23 is accompanied by the rotation of the filtration drum 20 (in the direction of the arrow in the figure).
When it is rotated, it is further dehydrated and is scraped off in the form of a cake by the scraping plate 24 arranged below the sludge storage section 19. The sludge in the sludge storage section 19 is filtered and dehydrated, its liquid level is gradually lowered, and when the sludge supply port 18 is exposed and opened above the liquid level 5c of the sludge 5, the sludge supply port 18
Outside air flows into the sludge supply container 6 from the
The negative pressure in the space 36 above the sludge 5 therein is reduced.

As a result, the sludge 5 in the sludge supply container 6 is supplied from the sludge supply port 18 to the sludge storage section 19 to raise the liquid level 5c of the sludge storage section 19. Here, sludge supply port 1
8 is exposed on the liquid surface 5c of the sludge 5, and when the outside air flows from the sludge supply port 18 into the sludge supply container 6 and rises in the form of bubbles, it is settled in the sludge supply container 6 and has a high specific gravity. Since the agglomerates are agitated, sludge supply port 1 can be
It is prevented that 8 is clogged.

When the liquid level of the sludge storage unit 19 rises and the lower end 18a of the sludge supply port 18 of the sludge supply container 6 is immersed in the sludge 5, the inflow of outside air from the lower end 18a of the sludge supply port 18 is stopped. When the weight of the sludge 5 from the liquid surface 5c of the sludge storage unit 19 to the upper surface 5b of the sludge 5 in the sludge supply container 6 and the negative pressure of the space 36 above the balance, the lower end 18a of the sludge supply port 18 Sludge supply is stopped.

The amount of sludge stored in the sludge supply container 6 is reduced,
When the sludge supply container 6 is filled with sludge, the on-off valve 17 of the sludge supply port 18 is closed to make the sludge supply container 6 a closed container, and the dredging sludge storage section 4 is installed at a position lower than the sludge supply container 6. The opening / closing valve 15 of the fluid filling port 11 and the opening / closing valve 16 of the negative pressure supply port 13 which communicate with the dredged sludge storage section 4 are opened.

After that, the negative pressure supply port 13 of the sludge supply container 6
Of negative pressure forming device V for supplying negative pressure to jet pump MJ
When P is operated and the negative pressure formed by this jet pump MJP is made to act on the inside of the sludge supply container 6, the sludge 5 in the dredging sludge storage unit 4 enters the sludge supply container 6 from the fluid filling port 11 by this negative pressure. Suction. Here, when the drop between the liquid surface 5a of the sludge 5 in the dredging sludge storage unit 4 and the fluid filling port 11 of the sludge supply container 6 exceeds, for example, 7 meters, or when the sludge supply container 6 is filled with the sludge 5 When it is desired to perform in a short time, the sludge 5 in the dredging sludge storage section 4 is pressure-fed by driving the pressure feeding means P which is provided at the tip portion of the suction hose 10 and includes a submersible pump. In this way, by driving the pressure feeding means P to pressure feed the sludge 5 in the dredging sludge storage section 4, even if the fluid filling port 11 of the sludge supply container 6 is positioned at any height. Therefore, the sludge 5 can be filled and fed.

Thus, when the sludge 5 in the dredging sludge storage unit 4 is sucked into the sludge supply container 6 by a predetermined amount, the dredging sludge storage unit 6
After closing the on-off valve 15 of the fluid filling port 11 and the on-off valve 16 of the negative pressure supply port 13 communicating with the above, the on-off valve 17 of the sludge supply port 18 is opened. Then, when the dredging sludge storage unit 4 is located at a position lower than the sludge supply container 6 as in the present embodiment, the negative pressure when sucking the sludge 5 of the dredging sludge storage unit 4 into the sludge supply container 6 is the sludge supply. Since the on-off valve 15 of the fluid filling port 11 and the on-off valve 16 of the negative pressure supply port 13 are closed because the negative pressure is higher than the weight of the sludge 5 sucked into the container 6, the inside of the sludge supply container 4 is closed. The negative pressure is higher than the weight of the sludge.

Therefore, when the bottom opening 18a of the sludge supply port 18 of the sludge supply container 6 is submerged in the sludge 5 of the sludge reservoir 19 when the opening / closing valve 17 of the sludge supply port 18 is opened. The sludge 5 in the sludge reservoir 19 is sucked back until the weight of the sludge up to the liquid surface 5b of the sludge 5 in the sludge supply container 6 and the negative pressure in the space 36 above the sludge are balanced. On the contrary, when the sludge supply port 18 is exposed above the liquid surface 5c of the sludge 5 in the sludge storage unit 19, the ambient air is discharged to the sludge supply port 1
8 is sucked, the negative pressure in the sludge supply container 6 is reduced, and the sludge 5 is supplied from the sludge supply port 18 to the sludge storage section 19 in place of the outside air to raise the liquid level 5c thereof.

Even when the outside air flows into the sludge supply container 6 through the sludge supply port 18 and rises in the form of bubbles, the solid mass having a high specific gravity settled in the sludge supply container 6 is agitated. The sludge supply port 18 is prevented from being clogged with the settled solid mass. In this way, the liquid level 5c of the sludge 5 in the sludge storage unit 19 rises, and the lower end opening 1 of the sludge supply port 18
When 8a is submerged in the sludge 5, the flow of outside air from the sludge supply port 18 into the sludge supply container 6 is stopped, and the weight of the sludge up to the liquid surface 5b of the sludge 5 in the sludge supply container 6 and the upper portion thereof The supply of the sludge 5 from the sludge supply port 18 is stopped while the negative pressure in the space 36 is balanced.

After that, the sludge 5 in the sludge storage section 19 is filtered and
When the liquid surface 17a is dehydrated and the sludge supply port 18 is exposed and opened above the liquid surface 5c of the sludge 5, the above-described operation is repeated and the liquid surface of the sludge 5 in the sludge storage portion 19 is repeated. 5c is kept near the allowable upper limit position UL.
In this embodiment, the jet pump MJP forming the negative pressure forming means 8 directly injects the pressure water supplied from the pressure water supply pipe 29 from the injection nozzle 31 to the negative pressure formation pipe 32. As shown in FIG. 4, pressure water is once injected from the injection nozzle 31 into the air-fuel mixture forming tube 40, and the negative pressure formed in the air-fuel mixture forming tube 40 sucks the outside air from the intake port 41 to form the air-fuel mixture. After the mixed air jet flow is formed in the pipe 40, the mixed air jet flow may be injected into the negative pressure forming pipe 32.

In this case, the air bubbles mixed in the air-fuel mixture jet stream flowing in the negative pressure forming tube 32 have negative pressure forming tube 3
Since it has a cushioning effect that softens the frictional resistance between the inner surface 32a of 2 and the jet water flow, a strong negative pressure can be formed by preventing the flow force of the mixed air jet flow from being rapidly attenuated. In addition, in this embodiment, one sludge storage container 19 is provided with one sludge supply container 6, but as shown in FIG. 5, one sludge storage part 19 is provided with two or more sludge supply containers 6 and 6. It can be provided. In such a case, any one sludge supply container 6 supplies the sludge 5 to the sludge storage unit 19, and the other sludge supply container 6 receives the sludge 5
By alternately supplying and filling so as to fill the sludge, the liquid surface 5c of the sludge 5 in the sludge storage section 19 can always maintain a predetermined liquid level.

In this case, when the volumes of the plurality of sludge supply containers 6 are made different, the timing of supply / filling can be set arbitrarily. Further, when the sludge treatment system 1 is mounted on the truck 2 as in this example, in the case where the dredging sludge storage sections 4 are scattered, there is also an advantage that the sludge treatment system 1 can be sequentially moved for treatment. is there.

In the above embodiment, the lower end portion 18a of the sludge supply port 18 is opened in a state in which it is located below the allowable upper limit position UL of the sludge 5 stored in the sludge storage portion 19 of the vacuum dewatering device D, and the fluid is discharged. Although the supply means S is formed, instead of this, as shown in FIG. 6, the sludge storage part 19 is provided with the adsorption storage part 19a and the lower end part 18a of the sludge supply port 18 and the liquid level stable storage part is provided. Portion 19b, which is divided into a liquid level stable storage portion 19b and a supply pipe 17c with a ball valve 17a.
Can be extended to form the fluid supply means S. <Embodiment 2> In this embodiment, the sludge supply container 6 in the above Embodiment 1 is modified as follows.

That is, as shown in FIG. 7, support brackets 46, 46 are provided above and below a support member 45 standing upright, and a sludge supply port 18 is formed at the lower end of the support brackets 46, 46. The pipe material 47 is supported vertically in a detachable manner, and flanges 48, 48 are provided near the upper and lower end portions of the pipe material 47 near the support brackets 46, 46, and the sludge supply container 6 is provided between the flanges 48, 48. The transparent tubular member 49 forming the body of the device is sandwiched in an airtight manner.

A float ball valve type on-off valve 50 is provided near the upper end of the pipe member 47, a negative pressure supply port 13 is provided at the upper end of the pipe member 47, and a fluid filling port for sucking sludge is provided on the lower flange 48. The sludge supply container 6 provided with the discharge port 11 and the discharge port 51 is formed, and the open / close valve 50 of the float ball valve type opens into the valve body housing casing 52 formed near the upper end of the pipe material 47. A spherical ball valve body 54 is housed on the pipe port 53 so as to be slidable up and down. When the liquid surface 5b of the sludge 5 sucked into the sludge supply container 6 rises and the ball valve body 54 floats up, it becomes negative. The pressure supply port 13 is closed.

Further, except that the on-off valves (not shown) are provided on the fluid filling port 11 and the discharge port 51, respectively, the first embodiment described above.
The configuration is substantially the same as that of FIG. In the sludge supply container 6 formed as described above, the transparent tubular member 49 can be easily removed only by disassembling the flanges 48, 48 at the upper and lower ends, which is convenient for transportation, and the tubular member 49 can be replaced very easily, and at the time of use, the amount of sludge 5 in the sludge supply container 6 is reduced, the condition of stirring the sludge 5 in the sludge supply container 6 by the outside air sucked from the sludge supply port 18, the sludge supply container 6 It is possible to visually check the filling time and the filling amount of the sludge in the inside through the transparent cylindrical member 49.

The same action and effect can be obtained not only by making the entire tubular member 49 transparent as in the present embodiment, but also by forming a transparent portion in a part thereof, for example, in a slit shape. You can do it. Further, when the sludge supply container 6 is detached from the support member 45 and separable from the sludge storage section 19 as in this example, when the dredged sludge storage sections 4 are scattered, the scattered dredged sludge is scattered. There is also an advantage that it can be applied to a so-called "centralized processing method" in which the sludge 5 in the storage section 4 is filled in the sludge supply container 6 and only this is transported to the vacuum dehydrator D for processing. <Embodiment 3> In this embodiment, as shown in FIGS. 8 and 9, an on-off valve 15 and a sludge supply port 18 of a fluid filling port 11 of a sludge treatment system 1 for supplying a fixed amount of dredged sludge to a dehydrator.
The opening / closing valve 17 of FIG.

That is, the sludge treatment system 1 is basically the same in construction as that of the first embodiment, and the fluid filling port 11 for sucking the sludge in the dredging sludge storage section 4 through the suction hose 10 is sludge. The opening / closing valve 15 of the fluid filling port 11 is provided at the bottom of the supply container 6, and a flap valve 58 with a dead weight closing type is formed at the upper end of the fluid filling port 11 and a flap valve 60 with a float 59 is provided at the sludge supply port 18. The point that the submersible pump 14 is configured as described above and the point that the pumping means P is configured by the tube pump 14 that can feed the slurry containing the solid lumps, and particularly the flap valve 60 with the float 59 is different.
As shown in FIG. 9, an orifice 61 is formed in this.

A gauge 62 for displaying a negative pressure in the space 36 in the sludge supply container 4 is provided on a side surface of the sludge supply container 14.
Is installed. Next, the operation of the sludge treatment system 1 configured as described above, particularly the operation of the flap valve 58 of the fluid filling port 11 that is closed by its own weight and the flap valve 60 with the float 59 of the sludge supply port 18, will be mainly described.

First, the sludge 5 is stored inside the sludge supply container 6, and the sludge supply port 18 is submerged in the sludge 5 in the sludge storage section 19 with the opening / closing valve 16 of the negative pressure supply port 13 closed. During operation, the flap valve 58 of the fluid filling port 11 provided at the bottom of the sludge supply container 6 is closed due to its own weight and the weight of the sludge from the fluid filling port 11 to the dredging sludge storage unit 4. Is closed.

Since the sludge 5 in the sludge supply container 6 and the sludge 5 in the sludge storage section 19 communicate with each other through the orifice 61 of the flap valve 60 of the sludge supply port 18, the sludge 5 in the sludge storage section 19 is connected. From the liquid surface 5c of the sludge to the liquid surface 5b of the sludge 5 in the sludge supply container 6 and the space 36 above it.
It is in a state of balance with the negative pressure formed in. When the weight of sludge from the liquid surface 5c of the sludge 5 in the sludge storage section 19 to the liquid surface 5b of the sludge 5 in the sludge supply container 6 and the negative pressure formed in the space 36 above the float are in balance, the float floats. There is no inflow or outflow of sludge from the orifice 61 formed in the flap valve 60 with 59.

In this state, the negative pressure from the negative pressure forming device V is supplied from the negative pressure supply port 13 to the suction pipe 22 of the filtration drum 20, and the sludge 5 in the sludge storage section 19 is filtered and dehydrated by the filtration drum 20. When the liquid surface 5c is gradually lowered, the sludge supply port 18 is exposed on the liquid surface 5c of the sludge 5. When the sludge supply port 18 is exposed on the liquid surface 5c of the sludge 5, outside air flows into the sludge supply container 6 from the sludge supply port 15 through the orifice 61 formed in the flap valve 60 with the float 59, and the sludge supply container Space 3 above sludge 35 in 6
The negative pressure of 6 is reduced, and the flap valve 60 is swung by the weight of the float 59 and the own weight of the flap valve 60 from the position shown by the solid line in FIG.
8 is opened. As a result, the sludge 5 in the sludge supply container 6
Is supplied from the sludge supply port 18 to the sludge storage unit 19, and the liquid level 5c of the sludge 5 in the sludge storage unit 19 is moved to the position A of the imaginary line in FIG.
To the position B indicated by the solid line.

Here, the sludge supply port 18 is at the liquid level 5 of the sludge 5.
When exposed to the upper surface c, the outside air flows into the sludge supply container 6 from the sludge supply port 18 and rises in the form of bubbles, the solid mass with a large specific gravity is stirred in the sludge supply container 6,
As in the first embodiment, it is possible to prevent the sludge supply port 18 from being clogged with the settled solid mass. When the liquid level 5c of the sludge 5 in the sludge storage unit 19 rises and the lower end 18a of the sludge supply port 18 is submerged in the sludge 5, the sludge supply port 18 is closed by the flap valve 60 by the buoyancy of the float 59.

When the storage amount of sludge 5 in the sludge supply container 6 is reduced by the operation of the filtration drum 20 and the sludge supply container 6 is filled with sludge, the jet pump MJ of the negative pressure forming device V is used.
P is operated, the on-off valve 16 of the negative pressure supply port 13 of the sludge supply container 6 is opened, and the negative pressure formed by the jet pump MJP is applied to the sludge supply container 6. This sludge supply container 6
The decrease of the sludge 5 in the inside can be detected only by visually observing the gauge 62 that indicates the change in the negative pressure inside the sludge supply container 6.

That is, as described above, the negative pressure in the sludge supply container 6 always balances the weight of the sludge from the liquid surface 5c of the sludge 5 in the sludge storage section 19 to the upper surface 5b of the sludge 5 in the sludge supply container 6. This is because the amount of the sludge 5 in the sludge supply container 6 decreases and the weight becomes lighter, and the negative pressure formed in the space 36 in the sludge supply container 6 also decreases accordingly.

When the opening / closing valve 16 of the negative pressure supply port 13 is opened and the negative pressure formed by the jet pump MJP is applied to the inside of the sludge supply container 6, the negative pressure causes the fluid filling port 11 to be closed. The flap valve 58 of the formula is opened, and the sludge 5 in the dredging sludge storage section 4 is sucked into the sludge supply container 6 via the suction hose 10. Sludge 5 in dredging sludge storage section 4
When a predetermined amount is sucked into the sludge supply container 6, the on-off valve 16 of the negative pressure supply port 13 is closed. Then, the dredging sludge storage unit 4
The strong negative pressure sucking the sludge 5 into the sludge supply container 6 causes the sludge 5 in the sludge storage section 19 to have an orifice 61 when the sludge supply port 18 is immersed in the sludge 5 in the sludge storage section 19.
And the negative pressure of the space 36 in the sludge supply container 6 is reduced, and the weight of the sludge from the liquid surface 5c of the sludge 5 in the sludge reservoir 19 to the liquid surface 5b of the sludge 5 in the sludge supply container 6 and its The negative pressure formed in the upper space 36 is in balance.

The sludge supply port 18 is the sludge 5 in the sludge storage section 19.
When the liquid is exposed on the liquid surface 5c of the flap valve, the outside pressure is sucked from the orifice 61 to reduce the negative pressure of the space 36 in the sludge supply container 6, and then the negative pressure of the space 36 is further reduced. The sludge supply port 18 is opened by swinging 60, and the sludge 5 in the sludge supply container 6 is transferred from the sludge supply port 18 to the sludge storage section 19
The liquid level 5c of the sludge 5 in the sludge storage section 19 is raised to near the upper limit allowable position UL where the sludge supply port 18 is submerged.

Thus, the liquid level 5 of the sludge 5 in the sludge storage section 19
When c rises and the sludge supply port 18 is immersed in the sludge, the inflow of outside air from the sludge supply port 18 into the sludge supply container 6 is stopped, and the sludge is supplied from the liquid surface 5c of the sludge 5 in the sludge storage unit 19. The supply of the sludge 5 from the sludge supply port 18 is stopped in a state where the weight of the sludge up to the liquid surface 5b of the sludge 5 in the container 6 and the negative pressure of the space 36 above the sludge are balanced.

Thereafter, the sludge 5 in the sludge storage section 19 is filtered and
It is dehydrated, its liquid level 5c gradually decreases, and the sludge supply port 1
When 8 is exposed and opens on the liquid surface 5c of the sludge 5, the above-described operation is repeated and the sludge is kept near the allowable upper limit position UL. In each of the above-mentioned embodiments, the case of filtering and dehydrating sludge is described as an example, but the invention is not limited to such a case.
It is needless to say that the negative pressure forming device can be constituted by a conventional vacuum pump in addition to the jet pump MJP, as a matter of course, it can be used when supplying other liquid.

[0058]

INDUSTRIAL APPLICABILITY As described above, according to the present invention, when the treatment fluid such as sludge is filled in the container by using the negative pressure generated by the negative pressure supply means, the container and the sludge filled in the container. When there is a large difference between the processing fluid and the liquid surface of the processing fluid, the processing fluid is injected into the container by the pumping means to fill the container. Even if there is a large difference between the container and the container, the processing fluid can be reliably filled in the container. As a result, there is an advantage that the work of filling the processing container with the processing fluid can be easily performed in a short time, and the workability thereof can be significantly improved.

Further, since the fluid supply means and the treatment means can be separated from each other, the treatment means, for example, the filtering device and the dredged sludge storage section are separated from each other, or the dredged sludge storage section is scattered. Even in such a case, since the sludge can be filled into the container of the fluid supply means by transporting the container to the place of the dredging sludge storage part, it is possible to fill the sludge into the container as compared with moving the entire sludge treatment system. There is an advantage that the sludge can be filled easily and inexpensively.

Moreover, since the operation of filling the processing fluid such as sludge into the container can be performed only by operating the negative pressure supply means, the pressure feeding means, and the opening / closing valve, when the fluid storage part is the sludge tank of the dehydrator, the inside of the container The sludge can be prevented from contacting the operator's hand or skin or splashing around when it is filled with the sludge, which can greatly improve the safety and prevent environmental pollution due to splashing around. There is also an advantage that it can be done.

Further, when the solid mass contained in the fluid in the container is settled and deposited at the bottom of the container, such as when restarting the processing apparatus that has been stopped for a long time, the When the on-off valve of the fluid supply port is opened after increasing the pressure, outside air or the sludge in the fluid reservoir is sucked back into the container from the fluid supply port, and at the time of this sucking back, the solid mass that has settled and accumulated at the bottom of the container. Is stirred and the sedimentation and accumulation of solid mass can be eliminated,
There is an advantage that the processing fluid can be stably and reliably supplied.

In addition, in the case of the jet pump which forms the negative pressure in the negative pressure forming pipe by injecting the pressure water from the injection nozzle into the negative pressure forming pipe, a strong negative pressure can be formed,
There is also an advantage that the processing fluid can be surely sucked into the container by this negative pressure. Incidentally, as in the present invention, in the container in which the negative pressure from the negative pressure supply means is applied,
For example, when starting the supply of the treatment fluid such as sludge from the container transported in a state where the treatment fluid such as sludge is less than half of the container, the weight of the treatment fluid and its There is also an advantage that a large amount of processing fluid can be prevented from flowing out of the fluid supply port to the fluid reservoir until the negative pressure in the inner space is balanced.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a sludge treatment system according to a first embodiment.

FIG. 2 is a vertical cross-sectional front view of a fluid quantitative supply portion of the sludge treatment system according to the first embodiment.

FIG. 3 is a vertical cross-sectional view of a jet pump MJP portion that constitutes negative pressure supply means of the sludge treatment system according to the first embodiment.

FIG. 4 is a sectional view of essential parts showing a modified example of the jet pump MJP forming the negative pressure forming device of the sludge treatment system according to the first embodiment.

FIG. 5 is a cross-sectional view of a sludge treatment system according to a first embodiment in which a plurality of containers are provided in a fluid reservoir.

FIG. 6 is a vertical cross-sectional front view showing a modified example of the fluid constant quantity supply unit.

FIG. 7 is a vertical cross-sectional view of a liquid supply container portion of a sludge treatment system according to a second embodiment.

FIG. 8 is a schematic configuration diagram of a sludge treatment system according to a third embodiment.

FIG. 9 is a sectional view of a liquid supply port portion of a sludge treatment system according to a third embodiment.

[Explanation of symbols]

 1 ... Sludge treatment system 5 ... Treatment fluid (sludge) 8 ... Stable fluid supply unit 9 ... Vessel 11 ... Fluid supply port 13 ... Negative pressure supply port 14 ... Pressure feeding means 15 ... Suction hose opening / closing valve 16 ... Negative pressure supply port opening / closing valve 17 ... Fluid supply pipe opening / closing valve 18 ... Fluid supply pipe D ... Processing means (filtering device) P・ ・ ・ Pressurizing means (submersible pump) S ・ ・ ・ Fluid supplying means

Claims (4)

[Claims] 1. When the processing fluid filled in a container is supplied to the processing means for processing, the processing means is continuously supplied while keeping the liquid level of the processing fluid supplied from the container to the fluid reservoir of the processing means substantially constant. A continuous liquid supply method for operating,
After the processing liquid is filled into the container from the fluid filling port by pressure feeding or negative pressure in the container, the fluid filling port is closed and sealed, the fluid supply port is located below, and the fluid of the processing means is located below the fluid supply port. The fluid supply port is opened after the reservoir is arranged, or the negative pressure of the negative pressure supply means is applied to the container, and then the fluid supply port is opened to suck the outside air from the lower end opening or the processing fluid in the container. Flow out, and the lower surface of the fluid supply port is blocked by the liquid surface of the fluid reservoir that changes with the flow-out fluid to block the inflow of outside air into the container, and the negative pressure above the container and the processing fluid in the container The fluid continuous supply method is characterized in that the fluid supply from the fluid supply port is stopped by the balance with the weight due to the head difference from the liquid surface to the liquid surface of the fluid reservoir. 2. A processing means having a fluid reservoir, and a fluid supply means for supplying a processing fluid to the fluid reservoir,
The fluid supply means includes a sealable container that stores a fluid, a fluid filling port that fills the container with a processing liquid, a negative pressure supply port that applies a negative pressure to the container, and a fluid supply formed at the bottom of the container. And an opening / closing valve or / and a pressure feeding means at the fluid filling port, and an opening / closing valve at the fluid supply port or the fluid supply path, and between the fluid supply port and the fluid reservoir of the processing means. A continuous fluid supply device, characterized in that a fluid constant quantity supply unit is formed and the fluid supply means and the processing means are separable. 3. The liquid constant quantity supply device according to claim 2, wherein the constant quantity fluid supply part is constituted by opening a lower end opening of the fluid supply port to a prescribed liquid level of the fluid storage part. 4. The liquid constant quantity supply device according to claim 2, wherein the processing means comprises a rotary drum type filtering device for filtering the processing fluid stored in the fluid storage portion.