JPH0410399Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Industrial application field) This invention uses two pumps and controls their operation either automatically, alternately or in parallel, to pump water from a water tank. Concerning an operational water pumping device.

(Prior art) A sleeve housing the pump in a water storage tank so that it can be taken out outside the tank is installed with one end fixed to the tank wall, and the pump needs to be taken out of the tank for inspection or troubleshooting. If this occurs, the pump can be taken out of the tank from inside the sleeve by simply closing the on-off valve connected to the other end of the sleeve from outside the tank and draining the water in the sleeve, or even without draining the water. The applicant intends to
It was proposed in No. 60931.

It is also conventionally known to use two pumps to pump water from a water storage tank, and to control the operation of the pumps so that they can be operated individually and alternately, or in parallel and alternately.

(Problem that the invention aims to solve) Two pumps whose operation is controlled automatically, alternately or in parallel, are housed in two sleeves installed inside the water tank, and can be taken out from the tank. In this case, in order to take the pump out of the tank, it is necessary to provide an on-off valve for each sleeve that can be opened and closed by operation from outside the tank, which doubles the installation effort and cost.

(Means for solving the problem) Therefore, the present invention connects both sleeves each housing a pump by piping in a water storage tank, and has a water intake on the circumferential side in the middle of the piping, and connects it to the piping. The present invention is characterized in that a valve housing is provided with valve seats at both ends in the axial direction, and the valve plate can be moved in the axial direction within the valve housing by operation from outside the tank.

(Function) Normally, the valve plate is positioned approximately midway between the valve seats at both ends in the axial direction. This allows the water in the water tank to flow from the intake port of the valve housing to each valve seat,
It enters both sleeves via piping and can pump water from either pump whose operation is controlled alternately (in the case of automatic parallel alternating operation, both pumps).

In addition, when the operation is interrupted and the pump in either sleeve is taken out of the tank, the valve plate is pressed against the valve seat of the valve housing on the side connected to the sleeve through piping to block the valve seat.

(Example) In the illustrated example, A and B are two pumps whose operation is controlled to be automatic single alternate or automatic parallel alternate, and 1a and 1b are the above pumps that are removably housed outside the tank to store water. Sleeves 2a and 2b fixed at one end to the tank wall of the tank are piping connecting the other ends of the sleeves to each end of the valve housing 3, and the valve housing 3 has an open part 3' on the circumferential side. , valve seats 3a and 3b are provided at each end in the axial direction.

Reference numeral 4 denotes a valve plate that moves in the axial direction inside the valve housing 3 by operating a handle 5 from outside the tank. When the valve plate 4 is positioned between both valve seats 3a and 3b, the water in the tank flows out of the valve housing. From the open part 3' to the valve seat 3a piping 2a
into the sleeve 1a, and the valve seat 3b and the piping 2.
b, and enters the sleeve 1b.

In the first embodiment shown in Figs. 1 to 3, a motor and a pump are connected as proposed in Utility Model Application No. 61-60931, and rod-shaped submersible pumps A and B having suction ports in the middle are connected to sleeves 1a and 1b, respectively. This is a case in which the sleeves are housed inside the tank so that they can be removed outside the tank and placed horizontally at the bottom of the tank, and two holes approximately equal in size to the inner diameters of the sleeves 1a and 1b are formed in the lower part of the side wall of the tank 6. The flange 1' at one end of the sleeve is brought into contact with the inner surface of the edge of each hole and fixed with bolts and nuts 7, respectively.If necessary, the other end of each sleeve is fitted onto the bottom wall of the water tank. The sleeves 1a and 1b are held substantially horizontally by being supported by a stand 8, and a rod-shaped submersible pump is housed in each sleeve by being pushed in with the end on the motor side leading. Incidentally, a separator is provided on the outer periphery of the motor side so as to be in sliding contact with the inner periphery of the sleeve and spaced apart in the circumferential direction to maintain a distance between water flow and the inner periphery of the sleeve.

A flange 10 is provided in the middle of the discharge pipe 9 of each submersible pump 1a, 1b extending from the pump side end and is large enough to close the hole in the side wall.
The flange 1' of the sleeve is inserted into the nut receiving hole on the peripheral edge of the sleeve.
The nut 7 for fixing is accommodated, the flange 10 is brought into watertight contact with the outer surface of the edge of the hole in the side wall through packing etc., a washer larger than the nut receiving hole is fitted into the protrusion of the bolt, and then the nut 11 is fixed again.
to fix the flange 10 to the outer surface of the side wall, and connect the tip of the discharge pipe 9 of each pump to the upward elbow and flange connection 12 to the respective pumping pipes 13a, 1.
Connect to 3b.

In this first embodiment, the handle 5 is connected to the sleeve 1a.
The collar 1' of 1b is attached to the tank wall that intersects at right angles to the fixed tank wall. For this purpose, the other end of the sleeve 1a is connected to the end of the valve housing 3 having the valve seat 3a through a pipe 2a having an elbow, and the other end of the sleeve 1a is connected to the end of the valve housing 3 having the valve seat 3a.
is connected to the end of the valve housing having the valve seat 3b with a pipe 2b having a T-shaped fitting 14, and the T-shaped fitting 14
The auxiliary pipe 15 is connected in the opposite direction to the valve housing, and the joint cylinder 16 having a flange in the middle is fitted into a hole in the tank wall that intersects at right angles to the tank wall to which the flange 1' of the sleeves 1a and 1b is fixed. The collar is pressed against the outer surface of the tank wall through the gasket, and the nut 16' is screwed onto the outer periphery of the joint tube 16 from inside the tank and tightened, thereby fixing the joint tube to the tank wall in a watertight manner. A spindle 17, which passes through the joint cylinder 16 through threaded engagement with the valve plate 4, is screwed into the inner periphery of the joint cylinder 16 from the outer end, and the valve plate 4 is adjustable with a nut 18' connected to the threaded portion on one end of the connecting rod 18. The other end is connected to the tip of the handle shaft 5', and the tip of the auxiliary tube 15 is connected directly or indirectly to the joint tube 1 through the socket tube 15'.
Install it by screwing it into the inner circumference of 6 from the inner end.

As a result, when the handle shaft 5' is turned with the handle 5 until it cannot be rotated in one direction, the handle shaft 5' is screwed in one direction relative to the spindle 17, and presses the valve plate 4 against the valve seat 3a of the valve housing 3, for example. Seat 3
Block a. Therefore, the drain plug on the flange 10 of the discharge pipe of the submersible pump A in the sleeve 1a is opened to drain the water in the sleeve 1a and the pipe 2a, and the flange connection between the discharge pipe and the pumping pipe 13a is removed. The submersible pump A, including the discharge pipe 9 and flange 10, can be removed from the sleeve 1a for inspection and repair (see broken lines in Figure 2).Once this is completed, repair can be carried out by performing the above operations in reverse. .

Further, by turning the handle shaft 5' in the opposite direction with the handle 5, the valve seat 3b is closed with the valve plate, and the submersible pump B in the sleeve 1b can be taken out of the tank in the same manner.

At all times, the valve plate 4 is attached to both valve seats 3a and 3b.
By placing the pumps A and B in a position away from each other, the water in the water tank enters the sleeves 1a and 1b from both valve seats through the pipes 2a and 2b, so pumps A and B are operated alternately. Both pumps can pump water. Please note that it is not possible to visually see that the valve plate is located far from both valve seats.
A mark 19 is attached to the handle shaft 5', and this mark 1
It is preferable that when the valve plate 9 is aligned with the tip of the spindle 17, the valve plate 4 is located in the center of the interval between both valve seats 3a and 3b.

The embodiment shown in FIG. 4 is almost the same as those shown in FIGS. 1 to 3, except that the handle 5 is attached to the tank wall opposite to the tank wall to which the flanges 1' of the sleeves 1a and 1b are fixed.

For this reason, the other end of one sleeve 1b is connected to the end of the valve housing having the valve seat 3b by a straight pipe 2b, and the other end of the other sleeve 1a is connected to an elbow,
A hook-shaped pipe 2a with a T-joint 14 connects to the end of the valve housing with the valve seat 3a. Then, the auxiliary pipe 15 is similarly connected to the T-shaped joint 14 in the opposite direction to the valve housing, the tip of which is fixed watertight to the tank wall, and the spindle 17 into which the shaft of the handle 5 is threaded is attached, and the spindle 17 is attached to the valve housing. The other end of a connecting rod having a valve plate attached to one end that moves with the other end is connected to the handle shaft 5'.

Therefore, its handling is the same as in the first embodiment. The embodiment shown in FIG.
As proposed in No. 127104, the pump parts of two pumps A and B, whose motor parts are placed outside the water tank, are inserted into sleeves 1a and 1b from above, respectively, so that they can be taken out of the tank. This is the case when it is accommodated.

Pump parts a and b of each pump A and B hang down from the center of a collar-shaped base plate 20 on which a motor part is mounted, respectively. A pump installation part 21 with a low upper wall is provided in a part of the water tank, and each sleeve 1a, 1 is installed there.
Two holes with approximately the same inner diameter as b are opened, and the collar 1' at the upper end of each sleeve is brought into contact with the lower surface of the edge of each hole, and the sleeves 1a and 1b are hung by fixing them with bolts and nuts 22, respectively. Then, the pump parts a and b of each pump A and B are hung into the respective sleeves 1a and 1b, and the nut receiving holes 20' in the peripheral edge of the base plate 20 are inserted.
The nut 22 is accommodated in the hole, the lower surface of the base plate is brought into watertight contact with the upper surface of the edge of the hole, a washer larger than the nut accommodating hole is fitted into the protrusion of the bolt, and then the nut 23 is tightened again to connect each pump A. B base plate 2
0 is fixed on the pump installation part 21, and the tip of the discharge pipe 9 of each pump is connected to the respective pumping pipes 13a and 13b by a flange connection 12.

Also, the lower end of each sleeve 1a, 1b is made vertical in the same manner as in FIG. 1 of the first embodiment.
A and 2b are connected to each end of the valve housing 3, and the valve plate 4 can be moved in the axial direction in the valve housing by a handle 5 attached to the side wall of the installation part 21. Since the details are the same as in FIG. 1, the same parts as in FIG. 1 are given the same reference numerals and explanations will be omitted.

Figure 5 shows that the valve seat 3a is closed with the valve plate 4, and the pumping pipe 1
3a and the discharge pipe 9, remove the nut 23, and attach the base plate 20 of the pump A to the installation part 2.
1 and lifting the pump A and removing the pump part a from the sleeve 1a. A state is shown in which part a is being accommodated in sleeve 1a, and pump B is in an installed state.

After repairing pump A, mark 19 on handle shaft 5
The valve plate 4 is moved to the left to open both valve seats 3a and 3b until the valve is aligned with the tip of the spindle 17, and both pumps A and B are operated in automatic single alternation or automatic parallel alternation. In this embodiment, when the pump parts a and b of the pumps A and B are pulled upward from the sleeves 1a and 1b, there is no need to discard the water in the sleeves and piping.

(Effects of the invention) According to the invention, one valve is required to take two pumps whose operation is controlled alternately out of each sleeve, and the number of valves used can be halved.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the first embodiment of the present invention, Fig. 2 is a cross-sectional side view of the sleeve shown in Fig. 1, and Fig. 3 is an enlarged sectional view of the main parts as seen in the direction of the arrow in Fig. 1. ,
Fig. 4 is a plan view of a second embodiment of the present invention, and Fig. 5 is a side view of another embodiment of the present invention.
1 is a pump, 1a and 1b are sleeves, 2a and 2b are pipes, 3 is a valve housing, 4 is a valve plate, and 5 is a handle.

Claims (1)

[Scope of Claim for Utility Model Registration] Alternate operation in a water tank in which two sleeves each housing a pump that can be taken out from the tank are installed, and the pumps in each sleeve are alternately controlled to pump water. In the type water pumping device, the above-mentioned sleeves are connected by piping in the water storage tank, and the valve has a water intake on the circumferential side in the middle of the piping, and has valve seats at both ends in the axial direction connected to the piping. An alternate operation type water pumping device for a water storage tank, characterized in that a housing is provided and a valve plate can be moved in the axial direction within the valve housing by operation from outside the tank.