JPS63143394A - Device for transportation with pressure - Google Patents

Abstract

PURPOSE:To prevent the damage of a mechanism part by installing a hydraulic cylinder between the cover body on a pressurizing chamber side and an elastic film for partitioning the inside of a casing into the pressurizing chamber and an intake/discharge chamber and introducing the pressurized oil in sealed state into between the pressurizing chamber and the hydraulic cylinder and connecting a reciprocating operation device. CONSTITUTION:A bulging type elastic film 4 is installed between a cover body 3 and a casing 2', and a pressurizing chamber 5 and an intake/discharge chamber 6 are formed in division. A hydraulic cylinder 19 is installed into the cover body 3', and the part between a piston 20 and the casing 2' is charged with the pressurized oil 14 in sealed state, and a hydraulic cylinder 21 is directly connected with the piston 20. Therefore, even if a crack is generated on the elastic film, intrusion of slurry, etc. into a hydraulic circuit is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The disclosed technology belongs to the field of structural technology for devices that pump slurry such as factory waste liquid under high pressure for solid-liquid separation or the like.

Summary of the Purpose> The invention of this application has a sealed bulging elastic membrane body interposed in a drum-shaped casing or the like with its proximal end tightly connected to the interior of the casing by pressurized oil. A pumping device that is separated into a pressurized chamber filled with slurry and a suction/discharge chamber that sucks and discharges the slurry, and the elastic membrane body is provided with a support so that the elastic membrane body maintains shape retention during contraction. In particular, a hydraulic cylinder is fixed on the side opposite to the elastic membrane of the pressurizing chamber, and a certain amount of pressurized oil is sealed between the hydraulic cylinder and the pressurizing chamber, and the hydraulic cylinder is connected to the pressurizing chamber. The elastic membrane body expands and contracts as the hydraulic cylinder moves forward and backward by the reciprocating device such as another hydraulic cylinder, which is intermittently transferred under high pressure from the tank of the liquid to be treated such as slurry to the solid-liquid separation device such as the filter press. This invention relates to a pressure feeding device that can perform pressure feeding.

<Prior art> As is well known, as citizens' lives improve, various industrial products flood the market, and waste treatment and recycling have become extremely important for both citizens' lives and businesses. This is becoming a problem.

Among these, solid-liquid separation of solid-containing processing liquids such as slurry is an extremely effective and important means for slurry processing, and therefore, highly efficient solid-liquid separation is required in secondary processing. In addition, a large amount of processing capacity is required.

Therefore, in order to process a large amount of liquid to be treated such as seed slurry, a high-pressure pumping device such as a solid-liquid separator is required, but conventional plunger-type pumping devices cannot pump the liquid under high pressure. Even if it were possible, there was the disadvantage that the discharge m per cycle was small, and the diaphragm type had the disadvantage of low pressure even though a large throughput was guaranteed.

To deal with this, many of the applicant's prior inventions, as shown in Figure 2, guarantee the pumping of a large amount of slurry under high pressure, so they are put into practical use as a powerful processing means for solid-liquid separation. It is becoming more and more common to see

That is, in the seed pressure feeding device 1, a bulging elastic membrane 4 made of rubber is sealed inside a drum-shaped casing 2 and lids 3 and 3' at both ends thereof. The inside of the pressurized chamber is separated into a suction/discharge chamber 6, and a sleeve-type support 7 is connected to the elastic membrane 4 and one lid in order to prevent the elastic membrane 4 from losing its shape retention when contracted. interposed between the body 3',
Regarding the pressurized chamber 5, a check valve 101 and a hydraulic pump 11 are connected to an oil tank 13 via an electromagnetic valve 12 from a pressurized oil intake/discharge port 8, and a check valve 10' and an oil pump 11 are connected to the other intake/discharge port 9. ’ is the solenoid valve 12
' to supply and discharge pressurized oil 14 to and from the pressurizing chamber 5 to apply and remove the pressing force to the elastic membrane body 4. On the other hand, to the suction and discharge chamber 6, The intake and exhaust ports 8' and 9' are connected to check valves io and io'.
, one side was connected to the slurry tank 17, and the other side was connected to the filter press 18 by means of electromagnetic valves 16 and 16', and the slurry 15 was sucked and discharged.

<Problems to be Solved by the Invention> However, in the conventional pressure feeding device 1, as shown in FIG.
Check valve 10.10' or solenoid valve 12.12
' etc. are installed, but it is directly connected to the oil tank 13, and therefore, the expansion and contraction of the elastic membrane body 4, which operates frequently, causes fatigue over time and causes unexpected damage. In such a case, the slurry 15 not only flows into the pressurizing chamber 5 from the suction/discharge chamber 6, but also leaks into the oil tank 13 if the device continues to be operated, which may damage various hydraulic mechanisms. There were drawbacks.

In addition, since a complicated hydraulic circuit is provided, there is a disadvantage that pressure oil leaks from each mechanism, resulting in consumption of valuable pressurized oil, resulting in increased costs.

Furthermore, between the pressurizing chamber 5 and the oil tank 13, two hydraulic pumps 11.1 are installed, one each on the pressurizing side and the discharging side.
1 has to be interposed, and the device becomes large, making it difficult to install a movable pressure feeding device into a plant by mounting it on a truck or the like.Also, it is heavy and costly, and maintenance is complicated. There was this inconvenience.

<Objective of the Invention> The object of the invention of this application is to make the elastic membrane body of the pumping device based on the above-mentioned prior art into a bulging type. The problems of mechanical damage, large weight, and high cost during the process are considered technical issues to be solved, and although the structure is simple and based on an extremely rational design, troubles in the hydraulic path on the pressurizing side can be avoided even in unexpected situations. Because it does not generate electricity and has a simple structure, it is possible to reduce costs, requires almost no maintenance, and increases operating efficiency over time, making it an excellent product that will benefit the field of separation technology application in various industries. The purpose is to provide a pressure feeding device.

<Means/effects for solving the problems> In order to solve the above-mentioned problems, the structure of the invention of this application, which is based on the above-mentioned claims, is to solve the above-mentioned problems by supplying a liquid to be treated such as slurry by a pressure feeding device. When transporting the liquid under high pressure to the next stage processing equipment such as a solid-liquid separator, an elastic membrane inserted inside the drum-shaped casing separates the inside of the casing into a pressurizing chamber on one side and a suction/discharge chamber on the other. In the pressurizing chamber, a set amount of pressurized oil is interposed in a sealed state between the piston of the hydraulic cylinder directly connected to the casing, the casing, and the elastic membrane, and the hydraulic cylinder is connected to other hydraulic cylinders, etc. When the reciprocating actuator moves forward and backward, the elastic membrane inserted in the casing expands due to the negative pressure in the pressurized chamber during the reciprocating operation, sucks the liquid to be treated into the suction and discharge chamber, and at the end of the stroke. The shape retention of the elastic membrane is maintained by adhering closely to a support such as a porous wire mesh provided on the pressurizing chamber side, and the pressure in the pressurizing chamber increases due to the advance movement of the hydraulic cylinder by the reciprocating actuator, resulting in high pressure. The pressurized oil in the state is pushed out using an elastic membrane body, and the process of pumping the slurry and other processed materials in the suction and discharge chamber to the next stage equipment such as a solid-liquid separator is repeated. If the system is damaged, the liquid to be treated from the suction/discharge chamber will only infiltrate the pressurized oil between the elastic membrane and the hydraulic cylinder, and there is no complicated hydraulic system, so maintenance, maintenance, and repairs will be difficult. Technical measures have been taken to reduce the number of conditions and ensure that the process can be carried out quickly.

<Embodiment - Configuration> Next, one embodiment of the invention of this application will be described as follows based on FIG. 1. Note that the same parts as in FIG. 2 will be explained using the same reference numerals.

The illustrated embodiment is a mode in which slurry such as factory waste liquid is separated into solid and liquid with high efficiency by a filter press, and 1' is a pressure feeding device which forms the center of the gist of the invention of this application, in front of the casing 2'. A slurry tank 17 is installed in the lid 3 of the section.
, and suction/exhaust ports 8' and 9' connected to the filter press 18 at the next stage via check valves 18 and electromagnetic valves 16 and 16' are provided, and between the lid body 3 and the casing 2', A bulging type elastic membrane 4 made of rubber is interposed and fastened together in a manner opposite to that shown in FIG. On the side of the suction/discharge chamber 6, a sleeve-type support 7 similar to the conventional one is interposed to maintain the shape retention of the elastic membrane 4 during contraction.

A metal porous bulging support body 7' is interposed on the pressurizing chamber 5 side to regulate the posture of the elastic membrane body 4 at the end of the stroke, and the other lid body 3' is integrally provided with a hydraulic cylinder 19, and a predetermined amount of pressurized oil 14 is hermetically sealed between the piston 20, the elastic membrane 4, and the casing 2'. For the forward and backward movement of the piston 20, another hydraulic cylinder 21 is directly connected.

In addition, there is a nipple 22 for supplying pressurized oil on the upper part of the casing 2' near the lid 3', and a nipple 22 on the lower side for supplying pressurized oil to the pressurized oil 14 side in case the elastic membrane 4 is accidentally damaged. The nipple 23 for discharging the mixed liquid of slurry 15 and pressurized oil 14 that has flowed in is connected, and in the normal operating state, both nipples 22.
23 are closed.

Therefore, in the pressure feeding device 1', the hydraulic cylinder 19 is substantially not equipped with complicated hydraulic piping, valves, etc., and is cut off from the slurry system.

<Embodiment - Effect> In the above configuration, when the slurry 15 from the slurry tank 17 is fed under high pressure to the filter press 18 for solid-liquid separation, the hydraulic cylinder 19 is moved by the piston 20 of the other hydraulic cylinder 21. When the piston 20 and the casing 2' are moved back and forth in a predetermined manner, the pressurized oil 14 interposed in a predetermined amount in the pressurizing chamber 5 of the elastic membrane body 4 is an incompressible liquid. 20, the elastic membrane body 4 is expanded and contracted between its stroke ends via the porous support body 7', and the check valve 10
．． The slurry 15 is intermittently pumped under high pressure from the slurry tank 17 to the filter press 18 via the filter 10 .

During this time, the elastic membrane body 4 is fully stroked and the support body 7'
The sleeve-type support body 7 is moved back and forth to maintain its shape at the end of the contraction stroke.

Then, solid-liquid separation under high pressure is performed by the filter press 18 as in the conventional mode.

And the piston 20 in operation. Or hydraulic cylinder 2
Since the amount of pressurized oil 14 is fixed in advance in detecting the first stroke end, it is easy to mechanically design the stroke end and switch the other hydraulic cylinders 21 as appropriate.

Since the elastic membrane body 4 repeatedly expands and contracts extremely frequently during operation, fatigue tends to occur over time, and to cope with this, the elastic membrane body 4 must be replaced at an appropriate time. However, if cracks or the like occur unexpectedly during that time, there is a risk that the slurry 6 will infiltrate into the pressurizing chamber 5 side. Since a certain amount of the pressurized oil 14 is sealed, no leakage occurs outside the system, and only the pressurized oil 14 between the piston 20 and the elastic membrane body 4 is contaminated. When the slurry 15 is detected by the detection device shown in the numerous prior inventions of , the entire device is stopped and the lower nipple 23 and upper nipple 22 of the pressurizing chamber 5 are detected. The mixed liquid of the contaminated pressurized oil 14 and slurry 15 is drained and cleaned appropriately, the elastic membrane body 4 is replaced, the nipple 23 is closed, a certain amount of new pressurized oil 14 is sealed through the nipple 22, and the operation is restarted. Serve.

Therefore, even if there are complex hydraulic circuits, contaminated slurry will not infiltrate those systems, and there will be no need to replace expensive equipment.

It goes without saying that the embodiments of the invention of this application are not limited to the above-mentioned embodiments, and various embodiments can be adopted, such as a porous net for the support in the suction/exhaust dormitory.

It goes without saying that the slurry to be applied can also be applied to slurries other than factory waste slurry.

In terms of design changes, it is of course possible to use a motor or the like as the reciprocating device for the piston of the hydraulic cylinder in addition to the hydraulic cylinder.

Further, the pressure feeding device can be mounted on a truck or the like to make it portable.

<Effects of the Invention> As described above, according to the invention of this application, in a pumping device that basically has a bulging elastic membrane inside a drum-shaped casing, the inside of the casing is divided into a pressurizing chamber and a suction/discharge chamber. A hydraulic cylinder is connected between the elastic membrane body and the lid body on the pressurized chamber side,
By connecting a reciprocating actuating device such as another hydraulic cylinder to the hydraulic cylinder and sealing a predetermined amount of pressurized oil between the piston, the elastic membrane, and the casing, the elastic Even if cracks occur in the membrane and slurry, etc. infiltrates the pressurized oil in the pressurizing chamber, the slurry will not enter the complex hydraulic circuit and destroy the hydraulic system of the complex circuit.
It has the excellent effect of not making it unusable and eliminating the need for maintenance, inspection, repair, etc.

Contaminated pressurized oil only needs to be extracted from the pressurized chamber of the casing and reprocessed or replaced with new pressurized oil, which dramatically increases equipment life. Moreover, an excellent effect is obtained in that the initial cost in manufacturing and assembling the device can be significantly reduced.

In addition, because the pressurized oil was sealed inside the pressurized chamber of the casing,
It does not require a complicated hydraulic circuit, so it can be used as a portable pumping device that can be mounted on a truck, and has the excellent effect of significantly expanding the range of action.

Moreover, by making it portable, the range of action and use of the pressure feeding device of the invention of this application is dramatically increased, which has the advantage of greatly contributing to waste treatment.

[Brief explanation of the drawing]

FIG. 1 is a partial cross-sectional schematic side view of one embodiment of the invention of this application, and FIG. 2 is a partial cross-sectional schematic side view of a conventional pumping device. 2...Casing, 4...Elastic membrane body, 5...
Pressurizing chamber, 7′...support body, 1′...pressure feeding device,
6... Suction and exhaust chamber, 19... Hydraulic cylinder, 14
... Pressurized oil, 21 ... Reciprocating operating device

Claims (4)

[Claims] (1) In a pumping device in which an elastic membrane inserted in a casing separates the inside of the casing into a pressurizing chamber and a suction/discharge chamber, and a support is attached to the elastic membrane, the pressurizing chamber and A pressure feeding device characterized in that pressurized oil is sealed between hydraulic cylinders and a reciprocating operating device is connected to the hydraulic cylinders. (2) The pressure feeding device according to claim 1, wherein the reciprocating operating device is a hydraulic cylinder. (3) In a pumping device in which an elastic membrane interposed in a casing separates the inside of the casing into a pressurizing chamber and a suction/discharge chamber, and a support is attached to the elastic membrane, the pressurizing chamber and Pressurized oil is sealed between hydraulic cylinders, a reciprocating actuator is connected to the hydraulic cylinders, and a support for the elastic membrane is provided on the pressurizing chamber side within the casing. A pressure feeding device. (4) The pressure feeding device according to claim 3, wherein the support body has a porous bulging shape.