JP6000836B2 - Valve-type vacuum automatic opening and closing device installed in the sewage tank - Google Patents

Description

  The present invention relates to a valve-type vacuum automatic opening / closing device installed in a sewage tank.

  Conventionally, while replacing old sewer mains in urban areas with new pipes, each household sewage basin is vacuum-sucked and discharged to the downstream side. It is necessary to install an automatic opening / closing valve, and each is provided. (See Figure 1)

  This conventional device (Japanese Patent Application No. 2012-105269) is the invention of the applicant of the present application. In order to achieve the functions necessary for opening and closing the main valve, the small ball valve in the sealed container is opened and closed using buoyancy. 4 and 5, the buoyancy generated in the float opens and closes the small ball valve via the chain and sprocket, and the main valve is opened and closed by opening and closing the ball valve. It is configured to

  The conventional automatic vacuum switchgear shown in FIGS. 4 and 5 includes a sealed container (7), an open air ball valve (8), a chain drive disk (9), a spring (10), a chain (11), It is composed of rubber holding bellows (12), float (13), and sealing cap (14).

  On the other hand, the improved portion of the present invention greatly reduces the number of parts and the area occupied by the device installed in the sewage tank (X). That is, by adopting a mechanical valve (8), the conventional small air-release ball valve (8), chain-driven rotary disk (9), spring (10), and sealing cap (14) can be reduced. It became possible.

  Further, by placing the float (10) of the present invention under the hermetic container (7), the buoyancy generated in the float is used as a pressing force, so that the push button (9) can be moved with a small stroke (10 cm). Pushed up to allow port conversion.

  Since port conversion became possible with a small stroke amount, it became possible to place the float under the sealed container (7), resulting in a simple and compact structure. As a result, the cost can be greatly reduced.

  In the conventional example, since the valve was opened and closed by the pulling force, a stroke of 40 to 50 cm was required to completely open and close the small air release type ball valve (8). As a result, in order to make the best use of buoyancy, the float had to move to the top of the sewage basin, and it was a necessary condition to secure a large movement space.

  Therefore, the problem to be solved by the present invention is to improve the device installed in the sewage basin of the conventional device (hereinafter referred to as drive device) and incorporate a completely new structure into the drive device which is the most important part. This is a valve-type vacuum automatic opening / closing device that is installed in a sewage basin that improves its function, reduces the number of parts, reduces the sealing area, and can greatly reduce costs.

  And this invention installs the airtight container which incorporated the new valve which evacuates the sewage from the inside of the sewage tub, opens and closes the valve using the buoyancy acting on the float, and turns on the supplied vacuum pressure. This is a valve-type vacuum automatic opening / closing device that can be turned off and transmitted to a vacuum cylinder on the ground to open and close the main ball valve and discharge the sewage in a vacuum.

  According to the present invention, it has the same operating principle as the conventional device, but the number of parts can be reduced by incorporating a completely new mechanism into the drive device, which is the most important part installed in the sewage tank. Became possible.

  In addition, the area that needs to be sealed can be greatly reduced by reducing the occupied area, and the operating force can be effectively utilized by using the buoyancy of the float as a pushing force instead of the pulling force of the conventional method. Became possible.

  That is, the stroke amount necessary for opening and closing the valve in the sealed space is 45 to 50 cm in the conventional method, but according to this device, it is possible to cope with about 10 cm.

  Therefore, this device greatly improves the reliability by reducing the number of parts, reducing the sealing part, etc., and can be made compact, so that it can operate reliably with a small stroke, and There are excellent effects such as a significant cost reduction.

It is explanatory drawing which shows one Example of the construction used for this invention. It is a principal part expanded sectional view which shows one Example of the construction used for this invention. It is a partially broken perspective view showing an embodiment of the present invention. It is a partially broken perspective view showing a conventional example. It is a partial cutaway sectional view showing a conventional 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.

  First, one embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIG. 3, the present invention is a float installed in a ground device section (A) and a sewage tank (storage tank) (X). And a drive unit (B) composed of a part and an airtight container (7), and a ground unit (A) and a device unit (C) for linking a device in a sewage tank (X).

  The ground device section (A) includes a suction pipe (1) connected to a vacuum drive source, a main ball valve (2), and a rack (3) for opening and closing the valve (2). The rack (3) Is provided with a pinion (4) on the valve (2) side, and the pinion (4) is coupled to a cylinder rod (6a) of a single-acting vacuum cylinder (6).

  For the cylinder (6), a spring (5) for returning the rod to the initial position is mounted on the tip side of the cylinder rod (6a).

  In addition, as connecting parts between the ground device part (A) and the sewage tank (X), the suction hose (13) branched from the suction pipe (1), the air communication hose (15), and the cylinder rod suction hose (14) 3 of the mechanical valve (8) [3-port valve: normally closed type] set in the hermetic container (7) through the storage pipe (12). It is fastened to each of the two ports (R, A, P).

  The drive device (B) is in contact with a mechanical valve storage sealed container (7), a mechanical valve (8), and a push button (9) provided at the tip of the valve (8) installed in the sewage tank (X). It consists of a float storage cylinder (11) that stores the float (10).

  Next, the operation sequence of the present invention will be described. First, the operation of the three-port valve which is the mechanical valve (8) will be described.

  The valve (8) is normally closed, and the P port is connected by a branched vacuum pressure hose (13), the A port is connected by a cylinder rod suction hose (14), and the R port is connected by an atmospheric communication hose (16).

  When the buoyancy pushing force is applied, the P port and the A port are connected, and the vacuum pressure acts on the single acting vacuum cylinder (6), opens the main ball valve (2), and sucks sewage. When the buoyancy is lost, the initial state is reached and normal close is performed. Note that the P port remains open to the atmosphere.

  Next, the operation sequence of the entire apparatus will be described. When the main ball valve (2) and the mechanical valve (8) are normally closed, fluid (sewage) flows into the sewage basin. At this time, the suction pipe (1) and the branched vacuum pressure hose (13) are filled with vacuum pressure.

  The cylinder rod 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.

  When sewage accumulates in the sewage basin and buoyancy begins to act on the float (10), the push button (9) of the mechanical valve (8) is pushed, and the port is switched. As a result, the P port and A port are connected, and the vacuum pressure enters the single-acting vacuum 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 sewage through the suction pipe (16). When both valves are fully opened and the sewage is completely discharged, the buoyancy acting on the float (10) is lost and the mechanical valve (8) is normally closed.

  At this time, the vacuum pressure of the cylinder rod suction hose (14) is replaced with the atmosphere of the sealed container filled by the atmosphere communication hose (15) in the sealed container. Accordingly, the inside of the single-acting vacuum cylinder (6) is also atmospheric pressure, and the rod side and the pressure are balanced. The cylinder rod suction hose (14) is provided with a vacuum air adjustment valve (17) in the vicinity of the single-acting vacuum cylinder (6).

  As a result, 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, sewage may flow backward from the suction hose (13) to the sealed container (7) due to the difference in the balance between atmospheric pressure and vacuum pressure. To prevent this, the line of the suction hose (13) Incorporates a backflow prevention device (18). By repeating the above, the on-off valve is automatically actuated to discharge the accumulated sewage to a vacuum.

  According to this device, the technology of a valve-type vacuum automatic opening / closing device installed in a sewage basin is established, and it is industrially applicable 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 Mechanical valve storage airtight container 8 Mechanical valve [3 port valve: Normally closed type]
9 Push button
10 Float
11 Float storage cylinder
12 Hose storage pipe
13 Branched suction hose
14 Cylinder rod suction hose
15 Air communication hose
16 Suction tube
17 Vacuum air adjustment valve
18 Backflow prevention device A Ground device unit B Drive device C Device unit that connects the ground device unit (A) and the device inside the sewage basin (X) R, A, P Port X Sewage basin

Claims (4)

In the case of renovation promotion work or pipe repair work that replaces an old sewer pipe with a new pipe, temporary drainage of the sewer pipe used is stopped, or the sewer pipe that needs to be stopped for temporary drainage is stopped. In order to receive the sewage discharged from each household in order to carry out construction in a dry state, the sewage basin installed in each household is used, and the sewage discharged from the sewage basin is temporarily downstream from the construction section. It is construction for flowing to the side,
In the automatic vacuum switchgear installed in the sewage basin (X) of each household to suck and discharge sewage,
The attachment position of the float (10) in the sewage basin (X) is provided in the lower part of the sealed container (7), the mechanical valve (8) is provided in the sealed container (7), and the float (10) is moved up and down. Thus, the valve-type vacuum automatic opening / closing device provided with the push button (9) of the mechanical valve facing.   The float (10) is provided in the float storage cylinder (11), and is provided in the storage cylinder so as to be in contact with the push button (9) of the mechanical valve (8) provided in the sealed container (7). The valve-type vacuum automatic opening / closing device according to claim 1, wherein   The valve-type vacuum automatic opening / closing device according to claim 2, wherein the float storage cylinder (11) is provided at the bottom of the sewage tank (X).   The mechanical valve (8) is a three-port valve and is normally closed. The P port is connected to a vacuum hose, the A port is connected to a vacuum cylinder hose, and the R port is connected to an atmospheric hose. 3. The valve-type vacuum automatic opening / closing device according to claim 1, wherein each hose is inserted into a hose storage pipe.

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