JPH0148400B2 - - 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 is not much of a problem 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 connection flange. This resulted in a decrease in the discharge amount due to water leakage from this section, and foreign matter getting caught in the discharged water in this section.

Therefore, methods to increase the moment that the pump weight acts on the connection flange surface include adding a heavy joist or increasing the distance from the connection flange surface to the center of gravity of the pump, 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 has an object to provide a pump device in which the moment based on the weight of the pump acting on the connection flange surface is small, but the connection surface does not separate even when used with a high-pressure pump. The pump is designed to be able to move up and down freely by being guided by a guide column installed upright on the connecting fitting for the discharge pipe fixed in the tank. In a device that can automatically connect the two flanges by engagement with the connecting fitting, a hook fitting is provided on the upper part of the pump side, and an engaging part of the flange is provided on the upper part of the discharge pipe connecting fitting side, and the hooks are provided on the upper side of the discharge pipe connecting fitting. An auxiliary hook is provided on at least one side so as to be able to freely swing up and down so that when the pump is connected, the auxiliary hook can be engaged with a fixed side locking device provided on the lower side of the discharge pipe connecting fitting in the downward movement position. The lower end is connected to the middle of the pump hanging member connected to the pump by an auxiliary hanging member, and the relationship between the pump hanging member and the auxiliary hanging member below the auxiliary hanging member connection point is the entire pump hanging member. When the pump suspension member is in a tense state and the engagement portion of the flange on the upper part of the discharge pipe connecting fitting side is engaged with the hook fitting on the upper part of the pump side, the pump suspension member below the connection point of the auxiliary suspension member loosens. According to the above, the auxiliary hook swings from the upward movement position to the downward movement position, and the fixed side locking device and the auxiliary hook fit engage with each other in the downward movement position of the auxiliary hook. Relating to a pump connection device.

The present invention will be described in detail based on the embodiment shown in the figures. 1 is a discharge pipe connecting fitting, one end of the pipe body can be connected to the discharge pipe, and the other end is an engagement part with the pump side. The connecting flange 2 is formed vertically, and the base 3 can be fixed to the tank bottom as appropriate.

The upper back surface of the connecting flange 2 is chamfered at an appropriate inclination angle to form a locking surface 2a, and the lower sides of both sides of the flange have fixed sides projecting outward by an appropriate length and having an inclined locking surface 4a on the back surface. A locking member 4 is formed.

Reference numeral 5 designates a set of two guide columns that are arranged upwardly in parallel at the back of the flange 2 of the discharge pipe connecting fitting 1.

Reference numeral 6 designates a submersible pump integrally provided with a submersible electric motor, and a connecting flange 7 formed at the tip of the discharge port of the pump casing projects from above the back beyond the flange, and the flange 7 is connected to the flange 2. A hook fitting 8 that engages with the locking surface 2a in the overlapping state to hold the pump in that position, and a guide fitting 9 that engages with the two guide columns 5 and guides the pump when it goes up and down. It is integrally equipped with.

Reference numeral 10 denotes an auxiliary hook fitting 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 connected to the hook fitting 8 and the locking surface 2a.
When the pump 6 is in the lower movement position, it engages with the locking surface 4a of the stationary side locking tool 4, thereby preventing the pump 6 from separating from the flange joint surface.

Reference numeral 11 denotes a pump suspension member, whose lower end is connected to the hook for suspending the pump 6, and whose upper end is connected to a chain block as appropriate to enable the pump to be raised and lowered.

Reference numerals 12 and 12 designate auxiliary hanging members of the same length that are connected to extend on both sides at an appropriate position above the lower end of the pump hanging member 11, and their lower ends are connected to the tip end portions of the auxiliary hook fittings 10, 10, respectively. There is.

In this case, the relationship between the pump hanging member 11a below the auxiliary hanging member connection point and the auxiliary hanging member 12 is such that when the entire pump hanging member 11 is under tension, the flange on the upper part of the discharge pipe connecting fitting 1 side The hook 8 on the upper part of the pump side can start to engage the engaging part 2, and when the engaging part 2 of the flange on the upper part of the discharge pipe connecting fitting 1 side and the hook 8 on the upper part of the pump side are engaged, the auxiliary suspension can be started. By loosening the pump hanging member 11a below the member connection point, the auxiliary hook fitting 10
swings from the upward movement position (dotted chain line position) to the downward movement position (solid line position), and in the downward movement position of the auxiliary hook 10, the fixed side locking tool 4 and the auxiliary hook 10 engage with each other. ing.

When the pump 6 is lowered to the connection position, the tension of the auxiliary hanging member 12 causes the auxiliary hook 10 to be in the raised position and lower along the guide column (as shown by the two-dot chain line in FIG. 1). When the hook 8 reaches the engagement position with the locking surface 2a as shown by the solid line in Figure 1, the auxiliary hook 10 is still in the raised position as shown by the dashed line in the same figure, but the movement continues after the pump stops descending. As the pump hanging member 11 is lowered, the pump hanging member 11a below the connection point gradually relaxes, and the auxiliary hook 10 descends. completely engages with the fixed side locking tool 4, and the auxiliary hanging member 12
It also relaxes.

Therefore, no matter how large the reaction force of the discharged pressurized water during operation of the pump 6 is, the flanges 2 and 7 will 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 12 becomes tense as the member 11 rises, and the auxiliary hook 10 As a result, the auxiliary locking with the fixed side locking tool 4 is released, and the hanging member 11a below the connection point is also tensed, and the pump 6 starts to rise, and the pump is pulled smoothly. It is fried.

Although it is possible to use only one of the auxiliary hook fittings 10 and fixed-side locking device 4 as an auxiliary locking means, it will be more reliable if they are provided on both sides. , Also, the pump hanging member 1
1 and the auxiliary hanging member 12 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. does not occur,
Moreover, no matter how lightweight the pump itself is, and no matter how close the center of gravity is to the flange joint surface, the pump will not separate. Therefore, all conditions on the pump side are advantageous, and excellent effects such as a reduction in the required space, a reduction in price, ease of handling, and no performance deterioration due to water leakage can be produced.

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 explanation of drawings]

Figure 1 is a side view showing one embodiment of the present invention, Figure 2 is a side view showing one embodiment of the present invention;
The figure is a sectional view from A to A in Fig. 1, and Fig. 3 is a sectional view of A to A in Fig. 1.
It is an enlarged detailed view of the main part in the figure. In the figure, 1 is a discharge pipe connecting 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, and 12 is an auxiliary hanging member.

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 fishing fitting provided on the pump side and the said discharge In a device in which the two flanges can be automatically connected by engagement with the pipe connecting fitting, a fishing fitting is provided at the upper part of the pump side, and a flange engagement part is provided at the upper part of the discharge pipe connecting fitting,
An auxiliary fishing 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 can be placed in a downward position and engaged with a fixed side locking fitting provided on the lower side of the discharge pipe connecting fitting. None, the lower end of the auxiliary fishing hardware is connected to the middle of the pump suspension member connected to the pump by an auxiliary suspension member, and the relationship between the pump suspension member and the auxiliary suspension member below the connection point of the auxiliary suspension member is ,
When the entire pump hanging member is under tension, the engagement portion of the flange on the upper side of the discharge pipe connecting fitting can be engaged with the fishing fitting on the upper side of the pump, and the flange on the upper side of the discharge pipe connecting fitting is engaged. When the pump suspension member is engaged with the upper part of the pump side, the pump suspension member below the connection point of the auxiliary suspension member is relaxed, so that the auxiliary fishing bracket swings from the upward position to the downward position. . A submersible pump connection device, characterized in that the fixed-side locking tool and the auxiliary metal fitting engage with each other in a lowered position of the auxiliary fishing metal fitting. 2. The submersible pump connection device according to claim 1, wherein the auxiliary fishing hardware and the fixed side locking device are provided in sets on both sides of the connection flange. 3. The engagement between the auxiliary fishing hardware and the fixed side locking device is as follows:
The submersible pump connection device according to claim 1 or 2, which is effective in preventing the pump from separating in a direction perpendicular to the connection flange surface.