JPS5928760B2 - Submersible pump connection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in automatically connecting a pump and a discharge pipe underwater to make the connection stronger.

Conventionally, many inventions and ideas have been filed regarding automatic connection between a pump and a discharge pipe underwater.

However, with these types of pumps, there are not many problems when the discharge pressure is low, but when using a high-pressure pump, the reaction force of the discharge water causes the pump to float, creating a gap in the lower part of the connecting flange. There was a decrease in the discharge amount due to water leakage from the core, and there were foreign objects caught in the discharge water in the core.

Therefore, as a means to increase the moment that the pump weight acts on the connection flange surface, methods such as adding a weight or increasing the distance from the connection flange surface to the center of gravity of the pump have been proposed, but both methods are difficult to handle. This not only leads to an increase in prices, but depending on the level of pressure, it may not be possible to resist the above-mentioned measures alone.

In view of the above-mentioned current situation, the present invention, in addition to the conventional connection means, uses an auxiliary hook fitting provided on the pump side and a fixed side locking device provided on the discharge pipe connecting fitting side to engage with each other at the lower part of the flange side at the time of connection. To provide a pump device that does not cause separation of the connecting surface even when using a high-pressure pump, even though the moment based on the pump's own weight acting on the connecting flange surface is small by lashing. It is.

To explain in detail based on the embodiment shown in the figure, 1 is a discharge pipe connecting fitting;
One end of the pipe body can be connected to a discharge pipe, and the other end has a vertical pump connection flange 2, and the base 3 can be fixed to the bottom of the tank as appropriate.○ The connection flange 2 The upper back surface is chamfered at an appropriate inclination angle to form a locking surface 2a, and below both sides of the flange there are fixed side locking tools 4 that protrude outward to an appropriate length and have an inclined locking surface 4a on the back surface. Let it form.

Reference numeral 5 designates a pair of guide pipes as guide pillars which are arranged upwardly in parallel at the back of the flange 2 of the discharge pipe connecting fitting 1.

6 is a submersible pump integrally equipped with a submersible electric motor,
A connecting flange 7 formed at the tip of the pump casing discharge port protrudes from above the back beyond the flange, and when the flange 7 overlaps the flange 2, the locking surface 2
It is integrally provided with a hook fitting 8 that can engage with the pump to hold the pump in that position, and a guide fitting 9 that engages with the two guide pipes 5 and guides the pump when going up and down. .

Reference numeral 10 denotes an auxiliary hook that is pivotably pivoted in the vertical direction below both sides of the casing at the back of the connecting flange 7 of the pump 6, and is in the downward movement position when the hook 8 and the locking surface 2a are engaged. and engages with the locking surface 4a of the stationary side locking tool 4 to prevent the pump 6 from separating from the flange joint surface.

Reference numeral 11 denotes a pump suspension member, the upper part of which is connected to a chain block as appropriate, and the lower end connected to the central part of a strut member 12, and both ends of the strut member 12 are connected by tension members 14 and 14 of the same length. Connect with pump 6 hanging hook,
This allows the pump to move up and down.

Further, the tension member 12 has both ends and the auxiliary hook fitting 1.
0.10 are connected by an auxiliary hanging member 13.13 of the same length.

In this case, the relationship between the auxiliary hanging member 13 and the tensioning member 14 is such that when the tensioning member 14 is in the tensioned state with the tensioning member 12 raised, the auxiliary hanging member 13 moves the auxiliary hook 10 to the upward movement position; In addition, when the pump 6 and the discharge pipe connecting fitting 1 and the fixed side locking tool 4 and the auxiliary hook 10 are engaged, the auxiliary hanging member 13 and the tension member 14 are lowered by lowering the tension member 12 and the auxiliary hook 10. are both relaxed, and the length of relaxation is set such that the tension member 14 side is longer than the auxiliary hanging member 13 side by the stroke required for upward movement of the auxiliary hook 10.

Therefore, when the pump 6 is lowered to the connection position, the auxiliary hook 10 is in the raised position due to the tension of the auxiliary hanging member 13 and the tension member 14, and is lowered along the guide pipe 5 (in the state indicated by the chain dotted line in Figure 1). ), when the hook 8 reaches the engagement position with the locking surface 2a as shown by the solid line in Figure 1, the pump stops descending even though the auxiliary hook 10 is still in the raised position as shown by the dashed line in the same figure. The rest is continued pump hanging member 11
When the tension member 14 is lowered, the tension member 14 is relaxed and the auxiliary hook 10 is lowered, and when the pump hanging member 110 is lowered by a predetermined amount or more, the auxiliary hook 10 is completely engaged with the fixed side locking tool 4,
The auxiliary hanging member 13 is also relaxed.

Therefore, no matter how large the reaction force of the discharged pressure water during operation of the pump 6 is, the flanges 2 and 7 do not separate.

In addition, when lifting the pump for inspection, repair, etc., when the pump suspension member 11 is lifted up while the operation is stopped, the auxiliary suspension member 13 becomes tense as the member 11 rises, causing the auxiliary hook fitting 10 to tighten. As a result, the auxiliary locking with the fixed side locking tool 4 is released, and then the tensioning member 14 is also tensed, and the pump 6 starts to rise, allowing the pump to be lifted up smoothly. .

Incidentally, as an auxiliary locking means using the auxiliary hook fitting 10 and the fixed side locking device 4, it is possible to use only one of them, but it will be more reliable if they are provided on both sides. , pump suspension member 11 - The auxiliary suspension member 13 and the tension member 14 may be cables or chains.

As detailed above, in the connecting device of the present invention, in addition to the conventional main locking part, an auxiliary locking part is also provided on the lower side, so no matter how large the reaction force of the discharged water is during operation, the pump floats up. Moreover, no matter how lightweight the pump itself is, and even if the center of gravity is still close to the flange joint surface, the pump will not separate.

Therefore, since the pump lateral properties are advantageous in all respects, it can produce excellent effects such as a reduction in the required space, a reduction in price, ease of handling, and no deterioration in performance due to water leakage.

Moreover, the auxiliary lashing means does not require any separate operation and can be operated automatically by simply raising and lowering the pump as the main suspension means, so it can be operated in the same time as conventional connecting devices. be.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a side view showing one embodiment of the present invention, and Fig. 2 is a side view showing an embodiment of the present invention.
3 is an enlarged detailed view of the main part in FIG. 1. In the figure, 1 is a discharge pipe connection fitting, 4 is a fixed side locking device, 6 is a submersible pump, 8 is a hook fitting, 9 is a guide fitting, 10 is an auxiliary hook fitting, 13 is an auxiliary hanging member, and 14 is a tension member. shows.

Claims (1)

[Scope of Claims] 1. When the pump, which is freely movable up and down by being guided by a guide column erected on the discharge pipe connecting fitting fixed in the tank, is lowered, an appropriate hook fitting provided on the pump side and the above-mentioned discharge pipe are attached. In the case where the two flanges can be automatically connected by engagement with the pipe connecting fitting, an auxiliary hook fitting is provided on at least one of both sides of the pump so as to be able to swing up and down, and when the pump is connected, it is in the downward position. The auxiliary hook fitting has a central portion connected to the lower end of the pump hanging member, and both ends connected to the pump by tension members. The end of the tension member is connected to the end of the tension member by an auxiliary suspension member, and the relationship between the auxiliary suspension member and the tension member is such that when the tension member is raised and the tension member is in a tensioned state, the auxiliary suspension member assists. As if the hook is in the upper position,
In addition, when the pump, the discharge pipe connecting fitting, the fixed side locking device, and the auxiliary hooking fitting are in a locked state, the tension member and the auxiliary hooking fitting are in the lowered position, and the auxiliary hanging member and the tensioning member are arranged so as to both relax. The submersible pump connection device is characterized in that the relaxed length is set to be larger on the tension member side than on the auxiliary hanging member side by the stroke required for upward movement of the auxiliary hook. 2. The submersible pump connection device according to claim 1, wherein one set of the auxiliary hook and the fixed side locking tool are provided on both sides of the connection flange. 3. The engagement between the auxiliary hook and the fixed side locking device is effective in preventing the pump from separating in a direction perpendicular to the connection flange surface,
Submersible pump connection device as described in section.