JP3076823B2 - Liquid suction flow device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for sucking a liquid from a storage location and feeding it to a predetermined location.

[0002]

2. Description of the Related Art When feeding sludge from a storage location of dredged sludge to a filtration device or the like as a device of this type, sludge contains solid lumps of various sizes, and the sludge is directly fed by a vacuum pump. Because sludge cannot be suctioned and pumped,
The negative pressure generated by the vacuum pump is applied to the reservoir tank, and the sludge containing solid lumps is once sucked into the reservoir tank by the negative pressure, and is then supplied by pressure from a tube pump or the like to a desired place. I have.

[0003]

However, as described above, sludge containing solid lumps is sucked into a reservoir tank by negative pressure generated by a vacuum pump, and is supplied by pressure to a desired place by a tube pump or the like. According to the method described above, in addition to a suction means such as a vacuum pump, a pumping means such as a tube pump is required, so that not only the initial cost is increased, but also the running cost is increased, and the entire apparatus is also increased in size. There was a problem.

Further, the amount of suction sucked by suction means such as a vacuum pump and the amount of pressure pumped by a pumping means such as a tube pump must be substantially the same, and a complicated connection control device for that purpose is required. Not only is it necessary and the operation becomes complicated, but also the operating efficiency is poor because the total processing amount can be adjusted to the one with a lower capacity, either the suction amount or the pumping amount. Accordingly, an object of the present invention is to provide a liquid suction / feed device which has been proposed in view of the above problems, is compactly assembled, and can reduce initial costs and running costs.

[0005]

In order to achieve the above object, a liquid suction / feed device according to the present invention comprises a sealable suction / flow container, and a pressurizing device for pressurizing a liquid stored in the suction / flow container. A jet pump, comprising: a pump; and a jet pump configured to inject pressurized water of the pressurized pump from an injection nozzle to a negative pressure forming pipe to form a negative pressure, and to suction a fluid from a suction port with the negative pressure. The discharge port of the suction flow container is opened in the suction flow container, and the flow port for discharging the liquid in the suction flow container whose volume has been expanded by the fluid sucked from the suction port at the volume expansion pressure is provided by the pressure pump and the jet. Pump outlet
And provided in the suction flow container.

[0006] Further, the negative pressure forming pipe may be composed of an air-fuel mixture jet forming pipe provided with an intake port and a suction negative pressure forming pipe.
The suction port is opened in a filter drum rotatably supported in a sealable filter container, and an outer peripheral space of the filter drum of the filter container is connected to a liquid supply source for filtration. One.

[0007]

The liquid suction / flow device according to the present invention firstly closes the suction / flow container storing the liquid (eg, water).
The water in the suction flow container is suctioned and pressurized by a pressure pump, and the pressurized water is supplied to the injection nozzle. Next, when the pressurized water pressurized by the pressurizing pump is jetted from the injection nozzle to the negative pressure forming pipe, a negative pressure is formed at the injection nozzle side portion of the negative pressure forming pipe, so that the negative pressure is sucked. Liquid (eg, dredged sludge) is drawn from the suction port into the negative pressure forming tube. The sludge sucked into the negative pressure forming pipe is discharged to the suction flow container together with the jet stream jetted from the jet nozzle,
The inside of the suction flow container depends on the volume of sludge sucked from the suction port .
The volume expands, and the inside of the suction flow container is pressurized accordingly.
When the inside of the suction flow container is pressurized in this way, sludge and water in the suction flow container are fed and supplied from the discharge port to a desired location by this pressure.

In the case where the negative pressure forming pipe is composed of an air-mixing jet forming pipe provided with an intake port and a suction negative pressure forming pipe, the pressurized liquid is jetted as a jet stream from the jet nozzle to the air-mixing jet forming pipe. The outside air is sucked by the negative pressure formed in the mixture jet forming tube, and after the mixture jet flow is formed in the mixture jet forming tube, the mixture is jetted from the mixture jet forming tube to the suction negative pressure forming tube. A negative pressure is formed in the suction negative pressure forming tubing.

A suction port is opened in a filter drum rotatably supported in a sealable filter container, and an outer peripheral space of the filter drum of the filter container is communicated with a supply source for filtrate. When a negative pressure is applied to the inside of the filtration drum, the negative pressure in the filtration drum acts on the outer peripheral space, and the liquid of the liquid supply source for filtration is sucked into the filtration container and filtered by the filtration drum. It is sucked into the flow container.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a liquid suction / flow device according to the present invention will be described below with reference to the drawings. FIG. 1 shows a schematic configuration of a sludge treatment system for sucking sludge and flowing the same to a filtration device, and reference numeral 1 in the figure generally indicates the sludge treatment system. The sludge treatment system 1 includes a filtration device 4 for filtering sludge (liquid) 3 from a filtration liquid supply source (for example, a port, a reservoir, and a container for storing sludge) 2 at the time of suction, and a filtration device 4 for aspiration. The apparatus is provided with a suction and flow means 5 for flowing in, and a sedimentation type filtration device 7 for filtering the filtered sludge fed from the suction and flow means 5 with a filter medium 6.

As shown in FIG. 2, the filtration device 4 interposed between the filtration liquid supply source 2 and the suction / flow means 5 is provided with a partition wall 9 for the interior of the closed filtration container 8 near the bottom. Forming an inflow chamber 10 in the upper part and a suction chamber 11 in the lower part,
A substantially cylindrical filter drum 12 is rotatably supported between the partition wall 9 and the upper wall 8a of the filter container 8, and the inside of the filter drum 12 communicates with the suction chamber 11,
The inflow chamber 10 has an inflow port 14 communicating with the filtration liquid supply source 2 through a sludge suction hose 13, and the suction chamber 11 has a negative pressure suction hose 1 connected to a negative pressure suction port 15 of a suction flow feeding means 5 described later.
The suction ports 17 communicating with each other at 6 are provided. The substantially cylindrical filter drum 12 is provided with a wedge wire having an inverted triangular cross section at a predetermined pitch, similar to that described in Japanese Patent Application No. 6-194290 previously proposed by the present applicant. An open and wound filtration surface 18 is formed, and a doctor blade 19 is provided in the inflow chamber 10 to remove solid mass adsorbed and held on the filtration surface 18 when the filtration drum 12 is rotated by the operation handle 20. Have been.

The suction / flow means 5 for feeding the filtered sludge from the filtration device 4 via the negative pressure suction hose 16 to the settling type filtration device 7 communicates with the closed water storage container 21 and the side thereof. A suction flow container 24 is formed by a water discharge container 23 having an upper part communicated with a pipe 22, and a submersible pump 26 for pressurizing water (including filtered sludge) 25 stored therein is disposed in the water storage container 21. A jet pump M. which forms a negative pressure for suction with pressure water is provided to a discharge pipe 27 for discharging pressure water pressurized by the submersible pump 26. J. P is provided,
Jet pump M. J. The discharge port 28 of the P
In the upper wall portion of the water storage container 21, there is provided a flow port 30 for flowing the filtered sludge 25 in the water storage container 21 to the sedimentation type filtration device 7 via the flow hose 29.

The jet pump M. J. P is provided with an injection nozzle 32 for injecting pressurized water from the submersible pump 26 with the flow control valve 31 interposed therebetween at the distal end of the water discharge pipe 33 of the submersible pump 26, and a negative pressure is provided in front of the injection nozzle 32 in the injection direction. The negative pressure suction port 15 is opened in a negative pressure space 35 between the injection nozzle 32 and the negative pressure forming pipe 34 by forming the forming pipe 34 concentrically.
And the suction port 15 of the filtration device 35 are connected to the negative pressure suction hose 1.
It is communicated at 6. The sedimentation type filtration device 7 includes a filtration layer 3 in which a vertically long cylindrical body 36 opening upward is filled with a filter medium 6.
7 is formed, and at the upper end, a feeding hose 29 which is once connected to the feeding port 30 is opened, and near the bottom, a take-out port 38 for taking out the filtered liquid is provided.
Reference numeral 39 in the figure denotes an outlet for discharging the water 25 of the water storage container 21, and reference numeral 40 denotes an outlet for discharging the filtered sludge of the water discharge container 23.

The operation of the liquid suction / feed device of the present invention through the sludge treatment system 1 configured as described above will now be described. First, the suction flow container 21 is closed, the water 25 in the suction flow container 21 is sucked by the submersible pump 26 and pressurized.
J. P is supplied to the injection nozzle 32. Then, when the fuel is injected from the injection nozzle 32 to the negative pressure forming pipe 34,
A high negative pressure due to cavitation is formed in the portion near the injection nozzle 32. When the negative pressure formed in the negative pressure forming pipe 34 is applied to the inside of the filtration drum 18 of the filtration device 4 via the negative pressure suction hose 16, this negative pressure changes the inflow chamber 10 to a negative pressure and the sludge suction hose 13 When the sludge 3 of the filtration liquid supply source 2 is sucked into the inflow chamber 10 and passes through the filtration surface 18 and is sucked into the suction chamber 11, solid matter in the sludge is removed from the filtration surface 18.
Is held by suction.

The filtered sludge thus filtered by the filtration drum 12 is supplied from the suction port 17 of the filtration device 4 to the negative pressure suction hose 1.
The liquid is sucked into the negative pressure forming tube 34 via the negative pressure suction port 15 and the jet pressure, and is discharged from the discharge port 28 to the water discharge container 23 together with the jet stream. Thereby, the volume of the filtered sludge sucked from the negative pressure suction port 15 and the pressure in the suction flow container 24 including the water discharge container 23 and the water storage container 21 are increased. When the pressure in the suction flow container 24 increases, the filtered sludge 25 of the water storage container 21 is sent from the flow port 30 to the sedimentation type filtration device 7 through the flow hose 29 at this pressure, where it is settled and filtered. Because The filtered liquid filtered by the settling filter 7 is supplied from the outlet 38 to the storage container or the drain pit 46.

In the above embodiment, the jet pump M. which generates a suction negative pressure is used. J. P is injected from the pressurizing pump 26 into the negative pressure forming pipe 34 by the injection nozzle 32 to form a negative pressure in the negative pressure forming pipe 34, and the negative pressure is taken out from the negative pressure suction port 15. However, as shown in FIG. 3, the compressed water from the submersible pump 26 is once jetted to the mixture jet forming tube 41, and this mixture jet forming tube 4
The external air is sucked from the intake port 42 by the negative pressure formed in 1 to form a mixed jet stream in the mixed jet forming tube 41,
It is a matter of course that the mixed jet stream may be jetted from the mixed jet forming tube 41 to the suction negative pressure forming tube 43 to form a negative pressure in the suction negative pressure forming tube 43. In this case, air bubbles mixed in the mixed air jet flowing in the suction negative pressure forming tube 43 have a cushioning effect to reduce the frictional resistance between the inner surface 43a of the suction negative pressure forming tube 43 and the jet water flow. A strong negative pressure can be formed by preventing the flow of the air jet stream from attenuating rapidly.

In addition, in the above embodiment, the case of sucking and flowing sludge is described as an example. However, the present invention is not limited to such a case, and the present invention can be applied to suction and feeding of concrete milk and other chemicals. It goes without saying. Further, in the above embodiment, the jet pump M.P. J. The pressurizing pump of P is constituted by a submersible pump, but instead of this submersible pump, a normal pump is installed outside the suction flow container, or the suction flow container is used as a water storage container. Instead of being formed with a spouting container, the two containers can be combined into one, or the filtration device interposed between the filtration liquid supply source and the suction and flow means can be omitted to provide the filtration liquid supply source with suction and Needless to say, it can be directly connected to the flow means.

[0018]

As described above, the liquid suction / flow device according to the present invention keeps the suction flow container closed, and jets the liquid in the suction flow container pressurized by the pressure pump. A negative pressure is formed in the negative pressure forming pipe by injecting it from the nozzle into the negative pressure forming pipe, and the volume and suction flow of the liquid sucked by the negative pressure
The volume of the liquid in the transfer container increases, and the inside of the suction flow transfer container is pressurized. Since the liquid in the suction / flow container is flowed from the discharge port to a desired location with this pressure, the liquid can be simultaneously suctioned and flowed by the pressure pump. Therefore, unlike the conventional case, it is not necessary to separately provide the suction unit and the flow-out unit, and the entire apparatus can be compacted, the initial cost can be reduced, and only the pressurizing pump needs to be driven. Another advantage is that the running cost can be greatly reduced.

Further, the liquid pressurized by the pressurizing pump is jetted from the jet nozzle to the negative pressure forming pipe, and the liquid for flowing is sucked by the negative pressure formed in the negative pressure forming pipe. Since the inside of the suction flow container is pressurized in a minute and the liquid in the suction flow container is flowed from the discharge port to a desired location, the suction amount sucked by the suction means and the pressure feed as in the related art It does not require a manual connection adjustment operation and an automatic connection control device to make the pumping amount fed by the means approximately the same, and the operation can be performed easily and the capability of the pressure pump can be fully demonstrated. There is also an advantage that the operation efficiency can be increased.

In the case where the negative pressure forming pipe is composed of a mixed air jet forming pipe provided with an intake port and a suction negative pressure forming pipe,
Bubbles mixed in the mixed jet flowing in the negative pressure forming pipe act as a cushion to reduce the frictional resistance between the inner surface of the negative pressure forming pipe and the jet water flow, so the flow of the mixed jet flow rapidly There is also an advantage that a strong negative pressure can be formed by preventing damping.

A suction port is opened in a filter drum rotatably supported in a sealable filter container, and an outer peripheral space of the filter drum of the filter container is communicated with a supply source for filtrate. When the liquid to be sucked is sucked, it can be filtered by the filter drum at the same time, and the wear of the pressure pump and the jet pump can be prevented as much as possible, and the durability can be greatly improved. There is also the advantage of being able to do it.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a sludge treatment system.

FIG. 2 is a vertical cross-sectional view of a filtration device interposed between a filtration liquid supply source and a suction and flow means of a sludge treatment system.

FIG. 3 is a mixture jet pump of the sludge treatment system.
J. It is a P longitudinal section side view.

[Explanation of symbols]

 2 ... supply source of liquid for filtration 8 ... filtration container 10 ... space part (inflow chamber) 18 ... filtration drum 24 ... suction flow container 25 ... liquid (filtration sludge) 26 ・··· Pressure pump (submersible pump) 28 ··· Discharge port 30 ··· Send port 32 ··· Injection nozzle 34 ··· Negative pressure forming pipe 41 ··· Aeration jet forming pipe material 42 ··· Intake Mouth 43 ... Suction negative pressure forming tube material ... Negative pressure suction port 35 ... Injection nozzle 36 ... Protective tube J. P ・ ・ ・ Jet pump

Claims (3)

(57) [Claims] A suction flow container capable of being sealed, a pressure pump for pressurizing a liquid stored in the suction flow container, and pressurized water of the pressure pump from an injection nozzle to a negative pressure forming pipe. A jet pump configured to eject to form a negative pressure, and to suction the fluid from the suction port with the negative pressure, wherein the discharge port of the jet pump is opened in the suction flow container, and suction is performed from the suction port. It has been pressurized Pont the Nagareoku port volume by fluid ejecting liquid in the container feed suction flow inflated by its volume expansion pressure
A liquid suction / flow device provided in a suction / flow container between a pump and a discharge port of a jet pump . 2. The liquid suction / flow device according to claim 1, wherein the negative pressure forming pipe comprises an air-mixing jet forming pipe provided with an intake port and a suction negative pressure forming pipe. 3. The filter container according to claim 1, wherein the suction port is opened in a filter drum rotatably supported in a sealable filter container, and an outer peripheral space of the filter drum of the filter container is communicated with a liquid supply source for filtration. The liquid suction / feed device according to claim 1 or 2, wherein: