JP5952633B2 - Buoyancy valve type automatic vacuum switchgear - Google Patents

Description

  The present invention relates to a buoyancy valve type vacuum automatic opening / closing device, and more particularly, to an automatic opening / closing device for vacuum discharge of sewage from a sewage tank which is a reservoir for fluid such as sewage.

  The existing automatic opening / closing device is composed of a combination of a position sensor and a solenoid valve. In other words, a change in the water level is detected by a position sensor, and when a certain level is reached, the sensor sends a signal to the solenoid valve, and the solenoid valve is turned on and off to open and close the valve.

  In general, the apparatus is used for renovation promotion work and is used for temporary drainage of renovation work. That is, while replacing the aging sewer main with a new pipe, it is adopted as a device for vacuuming the sewage from the sewage basin of each private house and discharging the sewage downstream.

  Accordingly, it is necessary to install one set of automatic opening / closing valves in each household sewage basin, and a large number of devices are inevitably required.

  However, the conventional apparatus requires three driving sources, that is, a vacuum generator, a compressed air generator, and an electricity generator, which inevitably has a disadvantage that the equipment is expensive.

  In addition, due to the size of the renovation work, the number of private houses to be constructed increases, and as a result, a large number of sets of automatic opening / closing valve devices are required, resulting in a large equipment cost.

  In addition, since an automatic release valve is set in each household sewage basin, it requires a variety of complicated electrical wiring, and requires a lot of time and man-hours for its preparation and installation.

  In addition, the renovation work using this device generally requires a period of at least one month, and has a drawback that the operation cost becomes large.

  The ordering side (owner) also tends to pay a second step to pay the construction cost for the secondary work called temporary drainage, although the renovation work is the main work, and cost reduction is required.

  In general, the size of a float in an object (sewage basin) whose volume is regulated is naturally limited, and basically it is difficult to obtain a large buoyancy.

  Therefore, an object of the present invention is to eliminate the above-mentioned drawbacks and to use Archimedes' principle that “the object is lightened by the weight of the liquid that it has pushed away (buoyancy)”. A float is installed in the storage tank, and the fluid stored in the storage tank for a while, that is, the sewage stored in the sewage tank is lifted by buoyancy. First, the small ball valve located in the storage tank is opened and closed by opening and closing means. As a result, automatic vacuum discharge is enabled by opening and closing the main ball valve located outside the storage tank, for example, above the ground, and various disasters (typhoons, floods, earthquakes, etc.) New buoyancy valve vacuum that can be discharged from each household into a living (undamaged) sewer pipe to ensure the environment and sanitation of each household due to sewer pipe damage caused by It is to develop and provide a dynamic switchgear.

  This invention makes it possible to discharge a fluid by utilizing a small buoyancy. A small air release type ball valve is incorporated in a sealed container installed in a fluid reservoir (sewage basin), and the buoyancy is small. The vacuum pressure of the drive source is sent to the vacuum cylinder, and the main valve is opened to discharge the fluid (sewage). When the buoyancy disappears after the fluid is discharged, the valve is sealed by the action of the spring. It is a buoyancy valve type automatic vacuum opening and closing device that opens and closes automatically.

  According to this invention, unlike the prior art, three drive sources (vacuum drive source / compressed air drive source and electric drive source) are not required, and one vacuum drive source required for discharge is used by utilizing the buoyancy by the float. It is very beneficial to automatically open and close the valve.

  That is, using only the discharge drive source (vacuum generator), the buoyancy acts on the float of the present invention by the fluid (sewage) accumulated in the storage tank, and the small ball valve is opened and closed by the buoyancy and connected to the valve. By transmitting the vacuum pressure in the suction hose to the vacuum cylinder, the main ball valve can be opened and closed, and wastewater can be discharged.

  Furthermore, after the fluid (sewage) is discharged, the two ball valves can be closed due to the absence of buoyancy, which eliminates the need for electrical wiring work and hose installation for compressed air. In addition, the cost of the entire apparatus can be reduced, and the running cost can be significantly reduced.

It is a partially broken perspective view showing an embodiment of the present invention. It is a partially cutaway sectional view showing a small air release type ball valve used in the present invention and a drive unit comprising a chain connected to a float. It is sectional drawing which shows the use condition of this invention. It is explanatory drawing which shows a prior art example.

  Hereinafter, it explains in detail as a suitable embodiment of this invention. The present invention is not limited to the following description, and can be appropriately changed without departing from the gist of the present invention.

  Fig. 4 shows the composition of the renovation promotion work. As shown in FIG. 4, the sewer (Z) is a construction in which a stopcock (V) is attached to the attachment pipe (W) and the construction section is dry. Of course, since this sewer (Z) is also connected to the sewage basin (X) of each household, it is necessary to also stop the water of this attachment pipe.

  Next, an embodiment of the present invention will be described in detail with reference to the drawings. The buoyancy valve type automatic vacuum on-off valve device is used for renovation promotion work for replacing an old sewer pipe with a new pipe or for repairing the pipe. It is necessary to perform temporary drainage of the sewer pipes that are used, and for temporary drainage, the sewer pipes that need to be stopped are stopped and the work is adopted in a dry state.

  The open / close valve adopted in the present invention is installed in a sewage basin for each private house, and the conventional open / close valve sucks sewage collected in the sewage basin and does not flow into the construction section. It is configured to flow into the sewage pipe on the downstream side.

  The operation is performed when the float switch installed in the sewage basin reaches a water level where there is sewage in the slag, a signal is sent, the solenoid valve is activated, the valve is opened by compressed air, and the sewage is sucked by the vacuum pressure. .

  A communication device and a hose pipe for compressed air are built in the box of the solenoid valve, and it is necessary to install a communication cable, an electric cable, and a hose for compressed air pressure, which makes it difficult to install and remove the wiring. At present, there are many troubles.

Next, one embodiment of the present invention will be described in detail with reference to FIG. 1. The buoyancy valve type automatic vacuum on-off valve device includes a ground device section covered with a casing (Y) and a storage tank (sewage basin) (X). The float (13), the airtight container (7), and the device unit that connects the ground device and the storage tank (X) device.

  The ground unit is composed of a suction pipe (1) connected to a vacuum drive source, a main ball valve (2), and an opening / closing mechanism for opening and closing the valve, and these are housed in a casing (Y). .

  As an example of the opening / closing mechanism, it is composed of a rack and pinion. The rack (3) is on the main ball valve (2) side, and the pinion (4) is on the cylinder rod (6a) of the single-acting vacuum cylinder (6). Are combined.

  For the single-acting vacuum cylinder (6), a spring (5) for returning the rod (6a) to the initial position is set on the tip side of the cylinder rod (6a) for tension of the cylinder rod (6a). ing.

  The opening / closing mechanism of the main ball valve (2) may be an opening / closing mechanism using a combination of a rotating disk, a chain, a wire and a spring, instead of the rack and pinion (3), (4) and the spring (5). Good.

  The apparatus set in the storage tank (X) is provided with a hermetic container (7), a small air release type ball valve (8), and a chain drive type rotating disk (9) for opening and closing the valve.

  Further, after opening and closing, a spring (10) is fastened to the upper part of the hermetic container (7) and the chain drive type rotating disk (9) in order to return the ball valve (8) to its original position.

  The float (13) and the chain drive type rotary disk (9) are connected by a chain (or string) (11). A screw for adjusting a tensile force is attached to the upper part of the chain, and the screw is fitted with a sealing cap (14). In order to prevent intrusion of fluid from this part, it is connected with a rubber bellows (12) for sealing and holding.

  As a connecting part between the ground device and the inside of the storage tank (X), a suction hose (15) branched from the suction pipe (1) is coupled to a small air release type ball valve (8). The suction hose (16) is fastened to the other side of the valve (8) by a single-acting vacuum cylinder (6).

  A vacuum air adjustment valve (19) for adjusting the speed of the cylinder rod (6a) of the single-acting vacuum cylinder (6) is attached to the suction hose (16).

Further, in order to fill the sealed container (7) with atmospheric pressure, one end of the atmosphere communication hose (17) is connected to the sealed container (7), and the other end of the atmosphere communication hose (17) is connected to the ground device section. Are attached to the casing (Y).
Note that the suction hose (15), the suction hose (16), the air communication hose (17), and the sealed container (7) are joined to prevent fluid from entering. In particular, the suction hose (15) incorporates a backflow prevention device so that sewage from the suction pipe (1) does not reversely enter the sealed container (7). It has been inserted to the position below the storage tank (X).

  A suction pipe (18) for sucking fluid (sewage) from the other end of the main ball valve (2) from the storage tank (X) is inserted to a position below the storage tank (X).

  Next, the operation sequence of the present invention will be described. When the main ball valve (2) and the small air release type ball valve (8) are closed, the fluid flows into the storage tank (sewage tank) (X). come. At this time, the suction pipe (1) and the suction hose (15) are filled with vacuum pressure.

  The cylinder rod (6a) of the single-acting vacuum cylinder (6) is pulled to the initial position by the spring (5), and the main ball valve (2) is closed. On the other hand, the small air release type ball valve (8) attached to the chain drive rotary disk (9) is also closed by the spring (10).

  When fluid accumulates in the storage tank (X) and buoyancy begins to act on the float (13), tension is applied to the chain (11), the rotating disk (9) that overcomes the spring (10) rotates, and a small open air type The ball valve (8) begins to open. A string may be used instead of the chain.

  As a result, the vacuum pressure enters the single acting cylinder (6), the pinion (4) overcomes the spring (5), rotates the rack (3), and opens the ball valve (2). The vacuum pressure of the suction pipe (1) discharges fluid (sewage) via the suction pipe (18).

When both the main ball valve (2) and the small air release type ball valve (8) are fully opened, and the fluid is completely discharged, the buoyancy acting on the float (13) is not exhausted and the small atmosphere The open ball valve (8) closes against the spring (10). At this time, the ball valve (8) is replaced with the atmosphere of the sealed container (7) filled with the atmosphere by the atmosphere communication hose (17).

  Therefore, the vacuum pressure accumulated in the suction hose (16) becomes atmospheric pressure, the inside of the single-acting vacuum cylinder (6) also becomes atmospheric pressure, the inside of the single-acting vacuum cylinder (6) also becomes atmospheric pressure, Balance the pressure.

  For this reason, the pinion (4) of the rod rotates the rack (3) by the force of the spring (5) to shift the main valve (2) from the “open” state to the “closed” state.

During this series of operations, the sewage may flow backward from the suction hose (15) to the sealed container (7) due to the difference in the balance between atmospheric pressure and vacuum pressure. To prevent this, the suction hose (15) line Incorporates a backflow prevention device (20).

  By repeating the above, the on-off valve automatically operates to discharge the accumulated fluid (sewage) in vacuum. FIG. 2 shows an air-released small ball valve and a chain drive unit, and FIG. 3 shows a chain-type rotating disk.

  According to the present invention, the technology of the buoyancy valve type vacuum automatic opening / closing device is established, and there is industrial applicability by manufacturing and selling in large quantities based on this technology.

DESCRIPTION OF SYMBOLS 1 Suction pipe 2 Main ball valve 3 Rack 4 Pinion 5 Spring 6 Single acting vacuum cylinder 6a Cylinder rod 7 Sealed container 8 Small air release type ball valve 9 Chain drive type rotary disk
10 Spring
11 Chain (or string)
12 Rubber bellows for sealing and holding
13 Float
14 Seal cap
15 Branched suction hose
16 Cylinder rod suction hose
17 Atmospheric communication hose
18 Suction tube
19 Vacuum air adjustment valve
20 Backflow prevention device X Storage tank (sewage tank)
Y casing

Claims (8)

  In the storage tank, a small air release type ball valve is opened and closed by utilizing the buoyancy of the float located in the tank, and the vacuum pressure in the suction hose communicating with the valve is located outside the storage tank. A buoyancy valve type automatic vacuum opening / closing device which opens and closes the valve by transmitting to a cylinder of a main ball valve, and discharges the fluid in the storage tank in vacuum. 2. A buoyancy valve type automatic vacuum opening / closing device according to claim 1, wherein a small air release type ball valve is incorporated in a sealed container located in the storage tank and is opened and closed by buoyancy. An air communication hose and two suction hoses are installed in a sealed container in the storage tank, and a float and a rotating disk that opens and closes a small ball valve are connected to a chain and a spring that closes the valve when buoyancy stops working. The buoyancy valve type automatic vacuum switchgear according to claim 2, wherein the buoyancy valve type vacuum automatic switchgear is fastened. 4. The buoyancy valve vacuum according to claim 3, wherein the chain connecting the float and the rotating disk has a structure sealed with a rubber bellows for sealing and holding so that fluid does not enter the float and the sealed container. Automatic switchgear. Cylinder is a single acting type vacuum cylinder, buoyancy valve vacuum automatic opening and closing apparatus according to claim 1, characterized in that it is a type that returns in the spring.   4. The buoyancy valve type automatic vacuum opening / closing device according to claim 1, wherein the ball valve opening / closing means is one selected from a rack, a pinion, a rotating disk, a chain, and a wire.   2. A buoyancy valve type automatic vacuum opening / closing apparatus according to claim 1, wherein the suction hose for sucking the cylinder is equipped with an adjustment valve which makes the movement of the cylinder adjustable.   The buoyancy valve type vacuum automatic opening / closing device according to claim 1, wherein the branched suction hose is provided with a backflow prevention device so that sewage does not enter the sealed container.

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