JP2544670B2 - Pumping equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The disclosed technology relates to a technical field of a structure of a flexible membrane that expands and contracts with the operation of supply and discharge in a pressure feeding device used for treatment of waste such as factory waste liquid. Belong to.

<Summary of the Summary> The invention of this application is such that the flexible membrane made of rubber swelling is installed inside the casing, and the inside of the casing is divided into the inside and outside of the movable membrane, and the casing and the lid. The body holds the end of the flexible membrane and has a suction port for hydraulic oil on one side and a suction port for liquid to be treated on the other side, allowing suction and drain ports for hydraulic oil and suction and drain for liquid to be treated. The present invention relates to a pumping device that is cut off from the inside and the outside of a flexible film, and in particular, an end portion of the flexible film is enlarged and shaped in a T shape in a bulging direction to form a peripheral portion, and the peripheral portion is formed on the peripheral portion. The invention relates to a pressure feeding device that is fitted in a casing in which grooves are provided in a lid body and a casing body in alignment with each other.

<Prior Art> As is well known, with the development of industry, a large amount of sludge and other wastes are discharged in various factories, and the swelling type is the invention and the invention of the applicant in the industrial waste treatment plant. The pressure-feeding device incorporating the flexible membrane is widely used.

As shown in FIG. 4, the pressure feeding device 1 has a support 2 such as a perforated plate which is integrally erected on the lid 2A on one side of the casing 2 and has a bulging type outside the support. The flexible membrane 4 is disposed, and the end portion 4E is sandwiched in the posture in which the lid 2A on one side of the casing 2 and the main body 2B are connected, and the end portion 4E is formed inside and outside the flexible membrane 4. The pump 5 is provided on the pressurizing side with respect to the inside.
As a result, the hydraulic oil 7 in the tank 6 is switched by the switching valve 8 to flow in and out, and on the other hand, on the operating side, the slurry 9 is contracted from the tank 10 via the one-way valve 11 due to the contraction of the flexible film 4. The one-way valve is applied to the filter press 13 by flowing into the working chamber 12 of the casing 2 and bulging the flexible membrane 4.
It is designed to be pumped through 11 '.

The flexible film 4 is formed as a swelling mold by integral molding, and the shape retention force of the flexible film 4 makes the end portion 4E of the casing 2 and the lid body on one side.
The casing 2 is sandwiched between the main body 2B and the casing 2A, and the casing 2 has a lid 2A that defines the inside of the flexible film 4 and a suction / discharge port for the hydraulic oil 7 that is provided in the casing 2A that forms the outside. An inlet and outlet for the liquid to be treated 9 are provided.

<Problems to be Solved by the Invention> However, the flexible membrane 4 that is repeatedly expanded and contracted in the casing 2 is preloaded inside so that the slurry 9 is sucked and discharged inside the working chamber 12 that is defined outside. However, if the end portion 4E of the flexible film 4 is excessively clamped, there is a drawback that the bending cannot be absorbed completely and the inside is distorted to be hardened to accelerate the deterioration.

When the working oil 7 is sucked and discharged under a high pressure inside the flexible membrane 4, the pressure leaks at the joining portion of the lid 2A and the casing body 2B, and the working oil 12 is supplied and discharged to the working chamber 12 side. There is a risk that the flexible film 4 will fall out of the holding of the casing 2 if this state is repeated, and the flexible film 4 falls off inside the pressure feeding device 1.

<Object of the Invention> An object of the invention of the present application is to solve the problem of supporting the flexible membrane at the time of high-pressure operation suction and discharge of the pressure feeding device based on the above-mentioned conventional technology, and to solve the problems inside and outside the flexible membrane. When the casing and the lid are mounted on the flexible membrane by respectively dividing the pressure side and the working chamber side with each other, the pressure leakage is suppressed by securely attaching the flexible membrane and the operation of the flexible membrane. It is an object of the present invention to provide an excellent pumping device which improves the durability and improves the durability of the pumping device, which is beneficial to the field of fluid treatment technology application in the waste treatment industry.

<Means and Actions for Solving the Problems> In order to solve the above-mentioned problems, the structure of the invention of the present application, which is based on the above-mentioned object and has the above-mentioned object as a gist, is made of a flexible film formed into a bulging type. The end portion is enlarged and shaped into a T shape along the bulging direction to form a peripheral edge portion, and the convex portion formed by the peripheral edge portion is held in a concave portion provided on the contact surface between the casing and the lid body, and the inside of the casing With the flexible membrane, the flexible membrane is securely squeezed so that the pressure leak of the hydraulic oil at the time of pressurization due to the hydraulic oil inside the flexible membrane is suppressed to ensure reliable suction and discharge. The technical measures were taken to prevent the flexible film from falling off.

<Example> Next, an example of the invention of this application will be described below with reference to Figs.

It should be noted that parts that are the same as those in FIG. 4 will be described using the same symbols.

In the embodiment shown in FIG. 1, reference numeral 4'denotes a flexible film which forms the center of the gist of the invention of the present application, and is an end portion which is made into a bulge type by integral molding of a dove and is flared outward. The peripheral side portion 4E is enlarged and formed in a T shape before and after in the bulging direction.

The end 4E is thick-walled at the base 14 and has a pointed shape at the tip 15.

Further, the holding portion of the casing body 2B is a pointed protrusion of the flexible film 4 '.
A ring-shaped groove 16B having a substantially U-shaped cross-section is provided in conformity with the shape of 15, while the holding portion of the lid 2A has a ring-shaped groove having a substantially U-shaped cross-section according to the shape of the base 14. 16A is provided.

Thus, referring to FIG. 4, the flexible membrane 4'has an end portion 4E of the flexible membrane 4 ', and a holding portion 16A, 16A of the casing body 2B.
The flexible membrane 4 ′ is clamped by B and held between the inside and outside of the casing 2.

In the above-mentioned configuration, when the pumping device 1 is operated, the pump 5 is activated, and the switching valve 8 sucks and discharges the hydraulic oil 7 inside the flexible film 4 ′, so that the flexible film 4 flows as the hydraulic oil 7 flows out and in. The slurry 9 is sucked into the working chamber 12 and discharged from the slurry tank 10 through the expansion and contraction of 9 '.

Thus, the hydraulic oil 7 flows into the pumping device 1 at a high pressure to preload the flexible film 4 ', but the end 4E of the flexible film 4'is enlarged and formed in a T-shape to form the lid 2A. And grooves 16A, 16 in casing body 2B
Since it is closely fitted to B, the pressure leak of the hydraulic oil 7 is suppressed.

Then, the flexible film 4 ′ continuously expands and contracts to pump the slurry 9 flowing into the casing 2 to the filter press 13.

Further, the flexible film 4'is securely held by the cover 2A and the casing body 2B at the enlarged portion of the end 4E, so that the flexible film 4'is prevented from falling off in addition to suppressing the pressure leak.

The bending due to the expansion and contraction of the flexible film 4'is absorbed by the thick portion of the end portion 4E that is continuous from the flared portion, and the strain does not remain, and the operability is improved.

Needless to say, the embodiment of the invention of this application is not limited to the above-mentioned embodiment. For example, as shown in FIG. 2, the end portion 4E of the flare-shaped portion of the flexible membrane 4'is continuous. The joint portion should be thick, or as shown in FIG. 3, metal rings 17, 17 should be cast into the pointed convex portion 15 at the end to suppress circumferential twisting due to bending. Various modes such as improving the rigidity of the flexible film 4 ″ can be adopted.

And the target of use is not only slurry, but other liquids,
Alternatively, it goes without saying that it can also be used for sending water under pressure.

<Effects of the Invention> As described above, according to the invention of this application, since the pressure leak of the hydraulic oil is basically suppressed during the operation of the pressure feeding device having the flexible membrane, the suction / exhaust efficiency of the pressure feeding device used for the high pressure feeding. The excellent effect of being raised is exhibited.

Thus, since the flexible film installed in the pumping device is enlarged and formed in a T shape in the bulging direction at the end and is sandwiched between the casing body and the lid body, An excellent effect that liquid such as hydraulic oil that is sucked and discharged can be blocked, the flexible film can be reliably supported, and that the flexible film is prevented from falling off due to the shape of the end portion. Is played.

Further, since the end portion is enlarged and formed into a thick wall and integrally formed into a bulge type, the bending caused by the expansion and contraction operation is sufficiently absorbed in the thick portion, and the operability of the flexible film is enhanced. The excellent effect that the durability of the pressure feeding device is also improved is exhibited.

[Brief description of drawings]

1 is an explanatory view of an embodiment of the invention of this application, FIG. 1 is a partial sectional view of a flexible membrane, a lid and a casing,
FIG. 2 is a partially enlarged sectional view of a flexible film in another embodiment,
FIG. 3 is a sectional view corresponding to FIG. 2 in another embodiment, and FIG.
The figure is a schematic cross-sectional view of a general-purpose pumping device. 4,4 ', 4 "... flexible membrane, 2 ... casing, 4E ... end, 1 ... pumping device, 16A, 16B ... groove, 17 ... ring

Claims (2)

(57) [Claims] 1. A pumping device in which a bulging flexible membrane divides the inside of a casing into an inside and an outside, respectively, and the flexible membrane is held by the casing at an end thereof. Ends of the flexible film are enlarged and formed in a T shape along the bulging direction of the flexible film, and the ends of the flexible film are enlarged and formed in a thick-walled shape in a direction opposite to the bulging direction. A pumping device, which is mounted on the casing having an end portion of a main body and a groove for the end portion. 2. The pressure feeding device according to claim 1, wherein a metal ring is cast into an end portion of the end portion of the flexible film in the bulging direction.