JPH094045A - Guide pipe support means of plant submergible pump - Google Patents

Abstract

PURPOSE: To make it possible to install a plant submergible pump smoothly by fittingly supporting the upper end of a guide pipe on a cylinder-shaped fit-in member and placing supportingly the inner peripheral surface of the guide pipe in contact with the outer peripheral surface of the fit-in member. CONSTITUTION: A pair of support arms 41b are extended into a manhole 10 in parallel in a horizontal state from the lower end at each side of a support plate of an intermediate support means 41. A cylinder-shaped fit-in member 41c is installed to the upper side at the tip of a support arm 41b while the cylinder-shaped 41 is also installed to the lower side at the tip. The upper end of a lower guide pipe 44 is fittingly supported on the fit-in support member 41c on the lower side while the lower end of an upper guide pipe 43 is fittingly supported on the fit-in member 41c the upper side. This construction makes it possible to prevent a plant submergible pump from being separated from each of the fit-in members 41c and 42c even when the submergible pump is lowered along the upper guide pipe 43.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a submersible pump for equipment installed at the bottom of a pit such as a manhole so that it can be automatically connected to a connecting pipe installed at the bottom of the pit. The present invention relates to a support tool used to support the upper end of a guide pipe that guides in the vertical direction.

[0002]

2. Description of the Related Art A submersible pump for equipment for pumping up sewage stored in the manhole is installed in the manhole into which the sewage flows, and the sewage stored in the manhole is pumped by the submersible pump for equipment. It is designed to be used.

Such a submersible pump for equipment is lifted up and down along a guide mechanism vertically arranged in the manhole so that an operator can install the submersible pump in the narrow manhole without working. The submersible pump for equipment, which is guided by the guide mechanism, is automatically connected to the connecting pipe installed at the bottom of the manhole.

The guide mechanism usually has a pair of guide pipes arranged in the upward direction along the inner peripheral surface of the manhole, and both guide pipes support the submersible pump for equipment, and both guide pipes are supported. Be lowered along. When the equipment submersible pump descends along both guide pipes, the discharge port of the equipment submersible pump is automatically connected to the connecting pipe arranged at the bottom of the manhole. The connecting pipe is connected to the discharge pipe vertically arranged in the manhole,
It is installed at the bottom of the manhole.

In the manhole in which the submersible pump for equipment is installed in this manner, the position of the opening may be restricted depending on the installation location or the like, and the opening is eccentric to the bottom of the manhole. Sometimes. In such a case, because the opening of the manhole is displaced from the installation position of the equipment submersible pump at the bottom of the manhole, the pair of guide pipes arranged vertically in the manhole may cause The pump cannot be lowered into position at the bottom of the manhole. In particular, when a pre-swirl tank that swirls the inflowing sewage is arranged at the bottom of the manhole, it is necessary to accurately install the equipment submersible pump on the predetermined position in the pre-swivel tank where the sewage flows. However, if the bottom portion of the manhole is eccentric with respect to the opening portion, it is not possible to guide the equipment submersible pump to a predetermined position on the bottom portion only by vertically arranging the guide pipe in the manhole.

For this reason, it has been attempted to arrange the pair of guide pipes in the manhole in an inclined state.

[0007]

The guide pipe is usually constructed such that each end is supported in a state of being fitted to a cylindrical supporting member, and the supporting member and the inner peripheral surface of the guide pipe are connected to each other. The gap is provided only about 1 to 1.5 mm, and when the guide pipe is largely inclined with respect to the support member, the guide pipe may come off the support member. Therefore, the guide pipe can be tilted only about 1.5 ° with respect to the vertical, and with this tilt angle, the equipment submersible pump should be guided from the opening of the manhole to the predetermined position on the bottom. May not be possible.

If the gap between the support member and the guide pipe is increased, the guide pipe can be greatly tilted, but the guide pipe is not securely fixed and vibrates when supporting and guiding the submersible pump for equipment. May occur, or loud noise may occur when driving the submersible pump for equipment.

In Japanese Utility Model Publication No. 62-33816, a pair of guide pipes are bent and placed in a manhole.
A configuration is disclosed in which a submersible pump for equipment is lowered along a bent guide pipe. However, in such a configuration, it is not easy to bend the pair of guide pipes in parallel, and it is not easy to install the bent guide pipes in the manhole so as to be in a predetermined state. . Furthermore, the submersible pump for equipment may not slide smoothly along the pair of bent guide pipes.

The present invention is intended to solve such a problem, and an object thereof is to smoothly pit a submersible pump for equipment even when the opening of the pit such as a manhole is eccentric with respect to the bottom. It is to provide a submersible pump system for equipment that can be installed at the bottom of the.

[0011]

A guide pipe support for an equipment submersible pump according to the present invention automatically connects an equipment submersible pump installed at the bottom of a pit to a connecting pipe installed in the pit. A support tool for supporting the upper end portion of the guide pipe that guides the inside of the pit in the vertical direction, and is supported so as to be fitted in the upper end portion of the guide pipe in the pit. The present invention is characterized in that it has a cylindrical fitting member whose outer peripheral surface bulges in an arc shape, thereby achieving the above object.

[0012]

In the guide pipe support of the submersible pump for equipment of the present invention, the outer peripheral surface of the upper end of the guide pipe, which is almost vertical with the lower end supported by the connecting pipe installed in the pit, is arcuate. Since the guide pipe is fitted to and supported by the cylindrical fitting member that bulges in the vertical direction, even if the guide pipe is tilted largely with respect to the vertical state, the inner peripheral surface of the guide pipe does not contact the outer peripheral surface of the fitting member. Since the guide pipe abuts and is supported, the guide pipe is firmly supported without wobbling or coming off the fitting member. The submersible pump for equipment is carried in from the opening of the pit, lowered along the guide pipe, and installed in a predetermined position while being automatically connected to the connecting pipe installed at the bottom.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a longitudinal sectional view of a manhole showing a state in which a submersible pump for equipment is installed in a manhole provided with a guide mechanism having a guide pipe support of the present invention,
FIG. 2 is a schematic plan sectional view thereof. A pre-swirl tank 20 is installed at the bottom of the manhole 10.
A pair of submersible pumps 30 for equipment are installed on the zero. Then, the submersible pump 30 for each facility is installed in the pre-swivel tank 20.
A pair of guide mechanisms 40 are arranged in the manhole 10 for installation at a predetermined upper position.

The manhole 10 has an opening 11 provided on an upper surface thereof eccentric to a bottom surface 12.

The pre-swirl tank 20 installed at the bottom of the manhole 10 is, for example, a fiber reinforced plastic (FR).
P) is integrally formed, and a pair of turning concave portions 21 are arranged in parallel in the central portion. Then, each turning concave portion 2
1, submersible pumps 30 for equipment are installed respectively. On the wall surface of the manhole 10, a pair of discharge pipes 51
Are arranged in a vertical state, and a check valve 52 and a sluice valve 53 are sequentially provided from the lower side on the upper portion of each discharge pipe 51.

The lower end of each discharge pipe 51 is attached to each of a pair of horizontal connecting pipes 54. Each connecting pipe 54 is installed in a horizontal state on the pre-swirl tank 20. In each connecting pipe 54, the end opening to which the discharge pipe 51 is connected is directed upward, and the other end opening is
It faces sideways so as to face each submersible pump 30.
The end portion opening of the connecting pipe 54 directed to the side is automatically connected to the discharge port of each submersible pump 30 installed on each swirling recess 21 of the pre-swirl tank 20.

FIG. 3 is a vertical cross-sectional view of one guide mechanism 40 arranged inside the manhole 10 along the vertical direction. The guide mechanism 40 is provided on the inner peripheral surface of the manhole 10 at an intermediate position in the vertical direction.
1, an upper support 42 attached to the inner peripheral surface of the opening 11 of the manhole 10, and a pair supported between the upper support 42 and the intermediate support 41 at an inclination angle of about 5 to 10 °. Upper guide pipe 43 and the intermediate support 41
And a pair of lower guide pipes 44 supported at an inclination angle of 1.5 ° or less.

The lower end portion of each lower guide pipe 44 is fitted and supported by each columnar supporting portion 56 provided on each side portion of each connecting pipe 54.

FIG. 4 is a plan view of an intermediate support 41 which is an example of the present invention in the guide mechanism 40. As shown in FIGS. 3 and 4, the intermediate support tool 41 includes a discharge pipe 51.
Has a long plate-shaped support plate 41a attached by a U-bolt 45, and a pair of support arms 41b extending horizontally from the lower end of each side of the support plate 41a into the manhole 10 in a horizontal state. ing. Each support arm 41b
Of the support arms 41b are provided with a cylindrical fitting member 41c on the upper side of each of the support arms 41b, and also on the lower side of the distal end of each of the support arms 41b.
A similar columnar fitting member 41c is provided.

The outer peripheral surface of each of the fitting members 41c bulges in an arc shape over the entire circumference, and the fitting members 41c arranged with the tip end portion of each support arm 41b sandwiched between them. Of the support arm 4 by a bolt 41d that passes through the shaft center portion of the support arm 41b and the tip of the support arm 41b, and a nut 41e screwed to the tip of the bolt 41d.
It is fixed to the tip of 1b. Then, the upper end of the lower guide pipe 44 is fitted and supported by the lower fitting member 41c, and the upper fitting member 41c is
The lower end of the upper guide pipe 43 is fitted and supported.

The inner peripheral surface of the lower guide pipe 44 is in contact with the arcuate outer peripheral surface of the lower fitting member 41c.

Another example of the upper support 42 of the present invention is
As shown in FIG. 3, the support plate 42a fixed to the inner peripheral surface of the opening 11 of the manhole 10 by a pair of anchor bolts 46, and the lower end of each side of the support plate 42a in the manhole 10 in a horizontal state. It has a pair of support arms 42b extending in parallel. The tip ends of the respective support arms 42b are bent so as to approach each other, and the cylindrical fitting members 42c are provided only below the tip ends of the respective support arms 42b.

The fitting member 42c also has an outer peripheral surface bulging in an arc shape over the entire circumference, and the bolt 42
It is attached to the tip of each support arm 42b by d and a nut 42e. The upper end portion of the upper guide pipe 43 is fitted and supported by each fitting member 42c.

Since the upper support 42 is attached to the inner peripheral surface of the opening 11 of the manhole 10, each fitting member 42c is positioned inside the opening 11. Therefore, the upper end portion of the upper guide pipe 43 fitted and supported by each fitting member 42 c is also located inside the opening 11 of the manhole 10.

The inner peripheral surface of the upper end of the upper guide pipe 43 is
The upper support member 42 is in contact with the arcuately bulged outer peripheral surface of the fitting member 42c, and the lower end portion of the upper guide pipe 43 also corresponds to the upper fitting member 41c of the intermediate support member 41. It is in a state of being in contact with the outer peripheral surface which bulges in an arc shape.

As shown in FIG. 1, the submersible pump 30 for each facility is provided with a motor 31 at the upper portion and a pump portion 32 at the lower portion. An impeller rotated by the motor 31 is arranged in the pump part 32, and the sewage that has entered each swirling concave portion 21 of the pre-swirl tank 20 enters the pump part 32 by the impeller in the pump part 32. Be sucked. The sewage sucked into the pump section 32 is
It is discharged from a discharge portion 33 (see FIG. 2) that extends laterally in a straight line.

A slide member 34 is attached to the upper surface of the discharge portion 33, as shown by the chain double-dashed line in FIG.
The slide member 34 is in a state of extending above the discharge port provided on the end surface of the discharge portion 33, and each side portion thereof has each upper guide pipe 4 in the guide mechanism 40.
3 and fitting recesses 34a into which the respective lower guide pipes 44 can be fitted are respectively formed. Then, the fitting recesses 34 a are formed in the upper guide pipes 43 of the guide mechanism 40.
Also, the lower guide pipes 44 are fitted into and guided by the respective lower guide pipes 44.

The submersible pump 30 for each facility is a manhole 1.
When installing from the opening 11 of 0 to the bottom of the manhole 10, the fitting recesses 34a of the slide member 34 are aligned on the upper guide pipes 43 of the one guide mechanism 40, and the entire submersible pump 30 for equipment is set. To lower. As a result, the slide member 3 is attached to each upper guide pipe 43.
When the fitting recess 34 a of No. 4 is fitted, the submersible pump 30 for equipment is supported by the pair of upper guide pipes 43.

In this state, the submersible pump 30 for equipment
Are lowered along the upper guide pipes 43 that are inclined with respect to the vertical.

The inner peripheral surfaces of the upper and lower ends of the upper guide pipe 43 are in contact with the outer peripheral surface of the fitting member 42c of the upper support tool 42 and the outer peripheral surface of the upper fitting member 41c of the intermediate support tool 41. The upper guide pipe 43
Even if the submersible pump 30 for equipment is lowered along the above, there is no risk of the upper guide pipe 43 wobbling or coming off the fitting members 41c and 42c.

When reaching the lower end of the upper guide pipe 43, the fitting recesses 34a of the slide member 34 are fitted into the lower guide pipes 44, the upper ends of which are supported by the intermediate support tool 42, respectively. State and the submersible pump 30 for equipment is in a state of being supported by the respective lower guide pipes 44, and is in a substantially vertical state.
Is descended along.

Although the lower guide pipe 44 is slightly inclined with respect to the vertical state, its upper end has an inner peripheral surface on the outer peripheral surface of the lower fitting member 41c of the intermediate support 41. Because it is supported in abutting state,
When the equipment submersible pump 30 descends, it wobbles,
There is no risk of it coming off the fitting member 41c.

When the equipment submersible pump 30 reaches the bottom of the manhole 10 in this way, the equipment submersible pump 30
The discharge port at the tip of the discharge unit 33 is automatically connected to the end face opening of the connecting pipe 54 installed at the bottom of the manhole 10. As a result, the submersible pump 30 for equipment is used in
It is installed at a predetermined position above the predetermined turning concave portion 21 at 0.

The submersible pumps 30 for each equipment installed on the bottom of the manhole 1 in this manner are
When the sewage flowing into 0 is stored to a predetermined level, either one is driven. By driving one of the equipment submersible pumps 30, the sewage stored in the swirl recess 21 is sucked by the equipment submersible pump 30 and discharged to the discharge pipe 51 through the discharge portion 33 and the connecting pipe 54. .

When the submersible pump 30 for each facility is to be maintained and inspected, each lower guide pipe 4 of the guide mechanism 40 is used.
The submersible pump 30 for facilities is pulled up along 4 and each upper guide pipe 43. Therefore, even if the opening 11 is provided eccentrically with respect to the bottom surface 12 of the manhole 10, the facility submersible pump 30 can be reliably pulled up into the opening 11 and easily carried out from the opening 11. You can

FIG. 5 is a longitudinal sectional view showing another embodiment of the manhole provided with the guide pipe support of the submersible pump for equipment of the present invention. In this embodiment, a pair of guide pipes 48 are provided by the upper support 42 of the present invention shown in FIG.
Are supported at their upper ends. Each guide pipe 4
The upper end of 8 is fitted to the fitting member 42c of the upper support 42. The fitting member 42c has a cylindrical shape whose outer peripheral surface bulges in an arc shape, and the inner peripheral surface of the guide pipe 48 is supported in a state of being in contact with the outer peripheral surface of the fitting member 42c. The lower end portion of the guide pipe 48 is fitted and supported by each support portion 56 provided on the connecting pipe 54 installed in the manhole 10. The guide pipe 48 has an inclination angle of about 3 ° with respect to the vertical state.

As described above, the guide pipe 48 inclined to the inclination angle of about 3 ° has the opening 1 of the manhole 10.
Even when 1 is inclined with respect to the bottom surface 12, the upper end portion thereof can be positioned inside the opening portion 11 of the manhole 10. Moreover, the guide pipe 48 in the inclined state
The inner peripheral surface of the guide pipe 48 is in contact with the outer peripheral surface of the fitting member 42c that bulges in an arc shape.
Even if the equipment submersible pump 30 is supported and slid on the guide pipe 48, the guide pipe 48 rattles or the fitting member 42
There is no danger of coming off from c.

[0039]

As described above, according to the guide pipe support of the submersible pump for equipment of the present invention, the upper end of the guide pipe is fitted and supported by the cylindrical fitting member whose outer peripheral surface bulges in an arc shape. Therefore, even if the guide pipe is inclined at a large angle with respect to the vertical, the guide pipe wobbles,
There is no risk of the fitting member coming off. Therefore, even if the opening of the pit is eccentric to the bottom, the submersible pump for equipment can be stably guided to the bottom of the pit, and the submersible pump for equipment installed at the bottom of the pit. Can be surely guided to the opening.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a manhole provided with a guide pipe supporting member of a submersible pump for equipment of the present invention.

FIG. 2 is a schematic plan view of the manhole.

FIG. 3 is a vertical cross-sectional view of a guide mechanism having a guide pipe support of the submersible pump for equipment of the present invention.

FIG. 4 is a plan view of an intermediate support of the guide mechanism.

FIG. 5 is a vertical cross-sectional view showing another embodiment of the manhole provided with the guide pipe support of the submersible pump for equipment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Manhole 11 Opening 12 Bottom 20 Pre-swivel tank 21 Swivel recess 30 Submersible pump for equipment 31 Motor 32 Pump chamber 33 Discharge part 34 Slide member 34a Fitting recess 40 Guide mechanism 41 Intermediate support 41a Support plate 41b Support arm 41c Fit Member 41d Bolt 41e Nut 42 Upper support 42a Support plate 42b Support arm 42c Fitting member 42d Bolt 42e Nut 43 Upper guide pipe 44 Lower guide pipe 48 Guide pipe 51 Discharge pipe 54 Connection pipe

Claims (1)

[Claims] 1. A guide pipe for vertically guiding the submersible pump for equipment installed at the bottom of the pit in the vertical direction so as to be automatically connected to a connecting pipe installed in the pit. A support tool for supporting the upper end portion, which is supported so as to be fitted in the upper end portion of the guide pipe in the pit, and has a cylindrical fitting member whose outer peripheral surface bulges in an arc shape. Guide pipe support for submersible pump for facility characterized by having