JPS6045319B2 - Precipitation device in jet pump equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a precipitation device in a so-called jet pump device in which a jet main body is used in combination with a Bucal pump.

A jet pump device used in a deep well is equipped with a nozzle part and a throat tube that constitutes a differential user, and a jet body installed in the well water, and a jet pipe that supplies water to the nozzle part and a throat tube from the throat tube. It is combined with a Beaucal pump that is connected via a water suction pipe that becomes the discharge side and is installed on the ground.By injecting pressurized water from the Beaucal pump from the nozzle part of the jet, the suction pipe at the bottom of the jet body The water sucked in from the tank is pumped up through the differential user and water suction pipe.

In such jet pump equipment, the jet pipe and suction pipe are quite long, so
When removing the entire jet pump from the well due to a malfunction in the jet part or other reasons, if the jet pipe and suction pipe are full of water, the weight of water in both pipes may reach 20:9. It is extremely heavy and difficult to remove.

For this reason, jet pumps have conventionally been equipped with a precipitation device that drains the water inside the vibrator. As a conventional precipitation device, by lifting the valve body of the check valve located at the bottom of the jet body from the valve seat,
Some vibrators are designed to drain water from both the jet and water-absorbing vibrators.

For example, as shown in FIG.
30 and a protruding portion 131 protruding from the lever 130.
is applied to the center of the lower part of the valve body 108, and the valve body 108 is pushed up by pulling a string 119 such as a wire connected to the end of the lever 130 from the ground. However, in the case of the precipitation device configured as described above, since the lever 130 is pivotally attached to a part of the mouth pipe 104 below the valve seat 114, the lever ratio of the lever 130 cannot be made large; When the lift height is large, the valve body 108 always has 5
Since a water pressure of about 6 kg/Clt is applied, it is extremely heavy to lift the valve body 108 straight up even if you use the lever action of the lever 130, and the water inside the vibrator will come out. It may take some time,
Precipitation operations require considerable force.

Moreover, although a backing 115 is attached to the lower surface of the valve body 108, this backing 115 comes into close contact with the valve seat 114 due to water pressure, making it even harder to lift the valve body 108. If it is lifted straight up, a part of the backing 115 remains stuck to the valve seat 114 and does not rise completely, preventing precipitation or causing the backing 115 to peel or deform, which may interfere with future use. There were some drawbacks, such as: The present invention solves the above-mentioned drawbacks of the conventional device and enables the opening action of the check valve without requiring much force. It was invented to be easy and reliable.

That is, the present invention provides a jet pump device as described above, in which a valve stem is connected to the center of the lower part of the valve body of the check valve installed in the suction port pipe, and the valve stem is suctioned by a traction means connected to the valve stem. The check valve is provided so that it can be tilted relative to the axis of the mouth pipe, and the valve body is tilted by tilting the valve stem to open the check valve. Examples thereof will be described below with reference to the drawings. In Figures 1 to 4,
Reference numeral 1 denotes a jet main body having a well-known structure, which is equipped with a throat tube 2 constituting a differential user above the nozzle part 3 of the jet in the axial direction, and a water supply pipe that opens upward from the nozzle part 3 through a substantially U-shaped lower bent part. A jet vibrator 6 that sends pressurized water is connected to the side, and a throat tube 2 that serves as the discharge side
A water suction vibrator 6a is connected to the pump, and as shown in FIG. 7, it is further connected to a Hugal pump 20 installed on the ground via these two vibrators, thereby configuring a jet pump device by combining the two. In the lower part of the jet body 1, there is a suction port pipe 4 communicating with the ejection side of the nozzle part 3.
is provided, and the suction port pipe 4 is equipped with a check valve 5.

Reference numeral 7 denotes a valve stem connected to the center of the lower part of the valve body 8 of the check valve 5, and this valve stem 7 is connected to the center of a valve stem support 9 provided laterally below the valve body 8 and intersecting the valve stem 7. It is loosely fitted into the hole 11 of the part 10 and held with a spring 12 interposed between the lower end of the valve stem 7 and the valve stem support 9, so that the valve body 8 rises against the spring 12 when water is absorbed. When water is not being absorbed, the valve is returned to the closed state by a spring 12.

The valve stem support 9 is passed through the lower circumferential wall 4a of the suction port pipe 4 so as to be able to move laterally, and is inserted into the hole 1.
A spring 13 for positioning is provided between the central portion 10 having a diameter of 1 and the lower circumferential wall 4a, and the central portion 10 is normally located at the center of the suction port pipe 4 and prevents the valve body 8 and the valve seat 14 from coming into close contact with each other. We make it possible to maintain this without any problems. 15 is the backing.

16 is a traction lever formed in a dogleg shape, with one end facing downward and the other end facing sideways on the outside of the suction port pipe 4, with the bent portion pivoted at a position above the valve stem support 9; The end of the downward portion and one end of the valve stem support 9 are rotatably connected by a pin 17, and the horizontal portion of the traction lever 16 is pulled upward by a traction means, which will be described later, to the pivot point 18. By rotating the valve stem support 9 in the lateral direction against the spring 13, the valve stem 7 can be tilted with respect to the suction port pipe 4, and the valve body 8 can be tilted. .

Reference numeral 19 denotes a string such as a wire that serves as a traction means and is connected to the end of the horizontal portion of the traction lever 16, and this string 19 is extended above the ground so that the above-mentioned traction operation can be performed from the ground. It is.

As shown in the figure, the connecting portion between the valve stem support 9 and the traction lever 16 is formed by forming a long hole 20 on the traction lever 16 side and loosely fitting a connecting pin 17 into the hole 20 to prevent the rotation of the traction lever 16. This ensures that the movement of the valve stem support 9 due to movement is not hindered.
In the embodiment configured as described above, J.I. When it is necessary to pull up the pump from inside the well, in order to discharge the water in the jet vibrator 6 and the water suction vibrator 6a, that is, to make it rain, connect it to the traction lever 16 and pull the string 19 pulled out above the ground. By traction lever 1
6 as shown in FIG. 4, and the valve stem support 9 connected to the end of the downward part is pulled laterally against the positioning spring 13. By moving the rod support 9 laterally, the valve rod support 9
Tilt the valve stem 7 loosely fitted into the hole 11 in the center of the valve stem 7.
The valve body 8, which is integrated with the valve body 8, moves in conjunction with the tilting movement to tilt the tilting side of the valve stem so as to lift it above the valve seat 14, thereby opening the valve. Water can also be reliably discharged. Note that the hole 11 must be formed so that the valve stem 7 and the hole 11 in the central portion 10 of the valve stem support 9 are loosely fitted so that the valve stem 7 can be tilted.
In the above case, the valve stem support 9 can be easily moved laterally using the rotation of the traction lever 16, and the valve stem 7 can be reliably tilted.

Moreover, the positioning spring 13 can normally maintain the valve stem support 9 in a predetermined position, and the valve body 8 can be maintained in a state convenient for close contact with the valve seat 14.
If the tensioning operation is released, it can be automatically returned to its original state. In the embodiment shown in FIG. 5, the traction lever is omitted, and the string 19 serving as the traction means is directly connected to the lower end of the valve stem 7, and the string 19 is pulled out laterally and the suction port pipe is 4 shows a case in which the string 19 is bent outside and pulled out upward, and 21 is a roller provided to eliminate friction at the bent portion of the string 19.

In this case, by pulling the string 19, the valve stem 7 can be directly
It means that you can tilt it. In the case of this embodiment, the valve stem support 9 can also be formed to be able to move laterally as in the previous embodiment, but as shown in the figure, the valve stem support 9 can be If the hole 11 is formed to a size that allows the valve stem 7 to tilt, the valve stem support 9 does not need to be moved laterally.

Note that the valve stem 7 can also be tilted in other configurations not shown.

As described above, in the present invention, the valve stem 7 connected to the center of the lower part of the valve body 8 of the check valve 5 can be arbitrarily tilted with respect to the 4-axis center of the suction port pipe by means of a traction means connected thereto. By tilting the valve stem 7, the valve body 8 can be tilted and the check valve 5 can be opened. 7 is simply tilted, so even if the water pressure applied to the valve body 8 is large, the valve stem 7 acts as a kind of lever by pulling the lower part of the valve stem 7 in the lateral direction and tilting it. Combined with this, the valve body can be easily and reliably tilted and the check valve can be opened without applying much force to the valve stem.

Therefore, even if it takes some time for the water in the vibrator to drain out, it is not a burden to maintain the check valve in an open state, and the precipitation operation becomes very easy to perform. Furthermore, since the valve body is lifted and tilted from the side as described above, there is very little chance that the backing remains in close contact with the valve seat, or that it peels off or deforms, increasing its durability. .

Further, since the valve stem is connected to the lower part of the valve body, a valve stem support and other members for tilting the valve stem are provided below the valve seat, and the structure can be easily constructed without the need for a seal. Therefore, the present invention is an excellent invention that is highly effective in solving the conventional drawbacks as a precipitation device for a jet pump.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing an embodiment of the present invention, Fig. 27 is an enlarged sectional view of the main part of the previous figure, Fig. 3 is a sectional view taken along the line ■-■ in the previous figure, and Fig. 4 is a longitudinal cross-sectional view during precipitation. 5 is a longitudinal cross-sectional view showing another embodiment, FIG. 6 is a cross-sectional view showing a conventional precipitation device, and FIG. 7 is a schematic diagram of a jet pump device. 1... Jet body, 4... Suction port pipe, 5... Check valve, 7... Valve stem, 8...
... Valve body, 9 ... Valve stem support, 13 ...
Positioning spring, 16... Traction lever, 19.
·····string.

Claims (1)

[Claims] 1. A jet main body 1 which is provided with a throat tube 2 constituting a differential user above the nozzle part 3 of the jet and installed in well water, and a water supply side to the nozzle part 3 with respect to the jet main body 1. It is a combination of a jet pipe 6 and a Hugal pump 20 which is connected via a water suction pipe 6a which is the discharge side from the throat tube 2 and is installed on the ground. In a jet pump device that pumps water sucked from a suction port pipe 4 at the bottom of the jet body 1 through the differential user and the water suction pipe 6a by injecting water from the nozzle part 3, the suction port pipe 4 at the bottom of the jet body 1 The check valve 5 provided inside has a valve stem 7 connected to the center of the lower part of the valve body 8, and the valve stem 7 is tilted with respect to the 4-axis center of the suction port pipe by a traction means connected to the valve stem 7. A precipitation device for a jet pump device, characterized in that it is provided so that it can be opened by tilting a valve body 8 by tilting the valve stem 7. 2 The valve stem 7 is held by a valve stem support 9 provided below the valve body 8 so as to be movable in the lateral direction, and is provided so as to tilt as the valve stem support 9 is moved in the lateral direction by the traction means. A precipitation device in a jet pump device according to claim 1. 3. A precipitation device in a jet pump device according to claim 2, wherein the valve stem support 9 is positioned by a spring 13. 4. Claim 2 or 3, wherein the valve stem support 9 is connected to a string 19, which is a traction means, via a traction lever 16, and is provided to move laterally by pulling the string 19. Precipitation device in the jet pump device described in 2. 5. A precipitation device in a jet pump apparatus according to claim 1, wherein a string 19 serving as a traction means is connected to the valve stem 7, and the valve stem 7 is provided so as to be tilted directly by the tension of the string 19.