JPS60217977A - Water tank - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] This invention installs a rod-shaped submersible pump in a water storage tank so that it is isolated from the water in the tank and can be pulled out from the tank, making maintenance and inspection of the submersible pump easy. Regarding the water tank that can be used.

The applicant for this patent is Tokugansho! ;'/-3A21t (JP-A-Sho), when assembling a water storage tank by connecting a large number of unit plates having flanges on all four sides adjacent to each other with flanges, there is no space inside the tank outside of one of the unit plates. A pump accommodating part that is isolated and expands in response to external force is provided, a rod-shaped submersible pump is installed penetrating this accommodating part, and a water supply pipe caged outside the tank is connected to the suction side of the pump and the inner bottom of the tank. We proposed that an on-off valve be connected in the middle of the pump, and when maintaining or inspecting the pump, the on-off valve would be closed, the water in the pump housing would be drained by fully opening the drain, and all submersible pumps would be removed from the pump housing. Conventionally, when a submersible pump is installed immersed in a tank, there are problems in that during maintenance and inspection of the pump, all the water in one tank must be drained by opening the drain, and the pump room is located outside the tank. This solved the problem of requiring space i for everything other than the tank when the tank was installed.

However, since the pump accommodating part that bulges out from the unit plate is installed at the bottom of the side wall or bottom wall of the tank, large water pressure is applied, and it is difficult to isolate the pump accommodating part from the inside of the tank watertight against this water pressure. There's a problem.

The present invention aims to solve the above problems, and includes a submersible pump with a discharge pipe protruding from one end of a rod-shaped pump body, and an opening slightly larger than the outer diameter of the pump body provided at the bottom of the side wall. a tank with a flange at one end, a sleeve whose inner diameter is slightly larger than the outer diameter of the pump body, and whose length is the same as that of the pump body, and which houses the entire pump body therein; a bolt for watertightly fixing the collar of the sleeve around the opening; a water supply pipe connected to the other end of the sleeve and leading into the tank; an on-off valve provided on the water supply pipe and operable from outside the sink; A discharge pipe that protrudes from the pump body, passes through the opening of the tank, and protrudes outward from the tank in a watertight manner, and is fixed to the outer surface of the tank by the bolt that fixes the collar of the sleeve to the side wall of the tank. The present invention is characterized by comprising a holding body, and a drain pipe provided on the holding body and capable of draining water in the sleeve. To do this, open the on-off valve by operating it from the outside, open the drain to drain the water in the water supply pipe from the sleeve to the on-off valve, and remove the submersible pump from inside the sleeve by removing the discharge pipe holder. The submersible pump can be easily maintained and inspected. What is decisively different from the previous proposal is that the pump body is housed in a sleeve whose inner diameter is slightly larger than the outer diameter of the pump body, and the flange at one end of this sleeve is opened at the bottom of the tank side wall. The pump body is watertightly fixed from the inside with bolts to a swivel with an opening slightly larger than the outside diameter of the pump body, and a water supply pipe with an on-off valve is watertightly connected to the other end of the pump. With this, when the on-off valve of the water supply pipe is closed, the sleeve is immersed in the bottom of the tank, but is completely isolated from the inside of the tank, and is separated watertight from the inside of the tank against the water pressure in the tank. It's extremely easy to do. Furthermore, the discharge pipe holder, which fits the pump's discharge pipe into the inner periphery and holds it watertight, is attached to the outer surface of the side wall using a sleeve that fixes the collar of the sleeve to the inner surface of the tank side wall. There is no need for separate bolts to fix the collar of the sleeve to the inner surface of the side wall and bolts to fix the discharge pipe holder to the outer surface of the side wall. The bolt that secures the sleeve is tightened to the side wall with a separate nut, so water inside the tank will not leak outside. Furthermore, since the amount of water in the sleeve and in the water supply pipe up to the on-off valve is small, the amount of water wasted is very small.

The illustrated embodiment will be described below. In the figures, the same components are given the same reference numerals.

In Figures 1 to 8, l is a tank, and \ is a rectangular box-shaped flange/' on the open surface of both upper and lower halves, which are connected with bolts and nuts, and are mounted on a pedestal. It is installed in The lower half has a recessed recess 2 that is open to the side and bottom at the bottom of the long side wall, and the submersible pump 3 is located between the end wall of one of the recesses and the short side wall /cL. to be installed.

The submersible pump 3 is of a well-known type having a water intake port 3' in the middle part of an elongated pump body 3α with one end closed, and a discharge pipe J6J screwed into the discharge port at the other end and fixed in an extended shape. be. The pump body 3α has a flange q′ at one end, and is housed in a sleeve q whose inner diameter is slightly larger than the outer diameter of the pump and whose length is equal to that of the pump body.

The tank has an opening 3 at the bottom of the short side wall/(L), which is equal to the inner diameter of the sleeve, and the collar ′ of the sleeve is brought into contact around the opening S from the inner surface of the tank through a packing, and the collar q′ and the side wall /α, a slightly longer bolt 6 is completely passed through from the inside of the tank, and tightened by screwing a nut tCL onto the bolt outside the tank.The other end of the sleeve is inserted into the recess through the hole in the end wall 2a of the recess and the end wall 2a of the recess. and water-tightly connect the water supply pipe s located inside the pipe and connected to the on-off valve 7 with a connecting pipe 9,
The above connecting tube if necessary? is penetrated and supported by a support plate 10 erected on the bottom wall of the tank. The center of the hole through which the water supply pipe 8 passes through in the end wall 2α, B and the support hole of the connecting cylinder in the support plate are at the same height as the center of the opening S in the side wall /α, so that the system sleeve q1 The water supply pipe 8 is placed horizontally at a distance slightly above the bottom wall of the tank.

The holding cylinder that seals and holds the connecting cylinder and the water supply pipe in the end wall and in the ab hole is optional, but in this embodiment, it is as follows.

The connecting cylinder (see Fig. 4.5) has a large diameter cylinder part deα that fits into the inner periphery of the sleeve, and a small diameter cylinder part 9bf whose inner diameter is slightly larger than that of the water supply pipe, and from the boundary between the two parts. The tsuba l/ is overhanging. And on the inner periphery of the large diameter cylindrical part, there is a stage L facing inward in the radial direction.
Three or more ribs/λ... having a radius of The small diameter cylindrical portion 9b is provided with a taper flnt3 on the inner periphery whose diameter increases toward the open end, and a packing ring/tawel with a wedge-shaped cross section is fitted into this tapered surface 13, and a taper ring/tawo with a wedge-shaped cross section is fitted on the outer periphery. has a male thread and is tightened against the collar //! ; a and the bag nut to be pushed into the above-mentioned packing ring L taper surface / J) /, t
b f is threaded. Incidentally, the front end of each of the ribs/2 is provided with an inclined surface L,b"f, and when the pump body is inserted into the entire sleeve, the blind end of the pump body is guided by the inclined surface/2 (L), and the inside surrounded by the ribs. so that it enters.

Therefore, fit the other end of the large diameter cylindrical part 9af sleeve before connection, fit the support plate /θ and backing to the small diameter front part, and then
/! ;a'? <Screw into the male thread on the outer periphery of the small diameter cylindrical part, back the support plate to the full valve, and then attach the collar to the l/ and Nara).
Tighten between the two and secure the support plate to the bottom wall of the tank. Then, pass the entire end of the water supply pipe 8 through the small-diameter cylinder part, and open the bag) i! f
b 2. Screw in the sealing ring/metal taper surface/JK and tighten the end of the water supply pipe 8 from around the circumference with the sealing ring/da to hold it in place (see Figure 3).

In addition, the holding cylinder /6 (see Fig. 6) is a cylinder whose inner diameter is slightly larger than that of the water supply pipe S, and has a collar /6α at one end, and the other end of the inner circumference has a tapered surface before connection. Tapered surface similar to /3 /6
b, a packing ring /7 with a wedge-shaped cross section is fitted on the tapered surface of the ring, and the outer periphery has a male thread, and the backing ring /7 is tightened against the collar (6a). A cap nut/b is screwed into the tapered surface/A b.

Therefore, the holding cylinder/Af fitted with a backing is passed through the hole for passing the water supply pipe in the end wall Co α and 2b, and its collar/6CL is brought into contact with the inner or outer surface of the tank on the end wall via the backing, and then the backing metal is fitted. Screw in the nut/zap α and tighten the collar/Aa between the end wall and the nut via the backing to fix the holding cylinder.

Then, pass the water supply pipe 87 through the holding cylinder, screw in the cap nut 1gb, and push the packing ring 17 into the tapered surface /A b.
Tighten the water supply pipe from the turn with the packing ring to keep it watertight (see Figure 3).

In this way, the water supply pipe can be watertightly connected to the other end of the sleeve, and the water supply pipe can be fixed watertightly across the recess. The actual work involves attaching a connecting tube to the other end of the sleeve, and if necessary, also attaching a support plate, attaching holding tubes to the holes in the end walls λ and 2b of the recess, and passing a water supply pipe through each holding tube. After connecting each end of the water supply pipe facing each other in the recess to the on-off valve 7 by screwing, etc., the water supply pipe will be held by screwing into each cap nut of the holding cylinder and the connecting cylinder, but this procedure is optional. You can do it as you see fit.

Then, put the blind end of the pump body into the opening 3 of the side wall /α, push it into the sleeve, and insert the blind end into the inner circumference of the large-diameter cylindrical part of the connecting cylinder surrounded by the lip/yu as described above. ,2
Bring it into contact with cL. Incidentally, the ribs /, 2 may be triangular ones having no step /λα as shown as S' in the above-mentioned prior application.

After inserting the pump body into the sleeve in this manner, the holder tq (7th.
8) is fixed to the side wall, the discharge pipe 3bf protruding outward from the opening 3 is held watertight, and the pump body is placed concentrically with the sleeve in the sleeve holder. The collar /9' of the holder has the same thickness as the nut (Aa) in which the collar 1I1 at the front end of the sleeve is fixed to the side wall /α, and has holes 3 in which the nuts 6α are fitted, arranged in the same manner in the circumferential direction.

In this example, the holding body has a large diameter part/9 cL, which is the same diameter as the sleeve, and a small diameter part/9 cL, which has a slightly larger inner diameter than the discharge pipe.
b, the collar /9' is provided at the end of the large diameter part /9a, and a packing cylinder /wa is fitted on the inner periphery of the small diameter part, the inner diameter of which is equal to the outer diameter of the discharge pipe. A male thread is provided on the outer periphery of the cap nut 2, which is pushed into the above-mentioned packing tube.
A collar-shaped stopper 23 is provided in the middle of the outer periphery of the discharge pipe 3b.

Therefore, the small diameter part of the holding body /9 b f is fitted into the discharge pipe 3b (
(See Figure 3), and a large-diameter washer is placed in each hole (see Figure 3), and a large-diameter washer is placed in each bolt (B) that accommodates the bolt Aa in the hole I and contacts the outer surface of the side wall/a of the collar 79' (see Figure 3). , 21I
i Fit, then screw the nuts Abf onto the bolts B and tighten them to the outer surface of the collar/9"ii side wall/α to fix the holder to the side wall. Then screw the cap nuts 2- and secure the packing cylinder 2/f discharge pipe. While pressing against the stopper 23, the discharge pipe 3b is tightened by the packing tube 2/ to keep it watertight.As a result, the pump main body 3α is pushed by the bag nut, the packing tube 2/, the stopper 23,
Is the blind end the connecting tube mentioned above? The rib/:l step/2rL or the triangular slope can be pressed to fix the pump immovably in the axial direction.

In this embodiment, the tip of the discharge pipe 3b is located at the small diameter portion lq of the holding cylinder.
It's in b. For this reason, the cap nut 22 is integrally provided with a cylindrical portion 2' for connection to the external pipe, but the tip of the discharge pipe 3b is made to protrude outside from the cap nut 22, and the external pipe J is connected to the discharge pipe 3b. It can also be connected directly to the tip.

For example, this holder is provided with a drain pipe roller facing downward that can be opened by removing the plug on the large diameter part /9a, and also has a drain pipe roller connected to the pump motor, a ground wire, and an air vent. The ventilation pipe is drawn out from the upward outlet 27 in a watertight manner.

To inspect the pump, close the on-off valve, remove the plug from the drain pipe, and drain the front end of the sleeve and water from the drain pipe comb up to the on-off valve in the water supply pipe S. Next Natsu)A
b'& to remove the holder/9 from the tank side wall/a, and pull the discharge pipe 3b2 to take out the pump 3 from the opening S. Also, after completing the inspection, perform the operations in the reverse order of the above. This allows inspection of the pump to be carried out with significantly less water being wasted.

In the above embodiment, the opening/closing valve 7 is located in the recess of the tank, so that opening/closing operations can be performed by directly touching the nondle 7'. However, the present invention is not limited to this, and in the case of IPiJ, as shown in FIG.
You can connect everything and touch it with your hands to open and close it. Also, the first
As shown in Figure 0, the end 8' of the water supply pipe S inside the tank
A spherical g that opens upward and can close the end 8' from the upper wall of the tank is suspended in the water using a string g', and the on-off valve 7 is connected to the spherical 2g and the upward end of the water supply pipe. When assembling and closing, use the string 2g'f long by operating it from a manhole in the earthen wall, block the upward end of the water supply pipe with the sphere, and after checking the pump, pull up the sphere a little with the string 2g' and place it. You can.

Furthermore, as shown in Fig. 11, an on-off valve 7 is connected to the middle or end of the water supply pipe inside the tank, and the shaft of the handle 7' is passed through the side wall or bottom wall of the tank in a watertight manner, so that it can be connected to the outside of the tank. It may also be possible to open and close by operating the nondle. In order to support the shaft of the nondle by penetrating the entire tank wall in a watertight manner, use a retaining cylinder 29 with a flange through which the handle shaft passes, similar to the water supply pipe 8 which is supported by penetrating the tank wall in a watertight manner. While fixing the seal cylinder to the tank wall, use a cap nut to compress the O-ring and backing to hold the handle shaft watertight from the rotation.

Alternatively, the handle shaft may be cut in the middle, the part with the non-drug' held through the tank wall as described above, and the part attached to the valve connected together with a connecting tube so that they rotate together. good.

In addition to the tank shown in Figure 1, the tank is an assembly in which a large number of square or long sword-shaped plastic or metal plate unit plates/α with flanges on the periphery are joined together with bolts and nuts, with the flanges butted against each other. It may also be a type tank (see Figures 9 to 11).

[BRIEF DESCRIPTION OF THE DRAWINGS] Figures 1 to 8 show a first embodiment of the present invention. Figure 1 is a partially cutaway perspective view of the entire tank, Figure 2 is a plan view of the main parts of the same, and Figure 5 is an enlarged sectional view of the main part of Figure 2, Figure 4 is a front view before connection, Figure 5 is a longitudinal sectional view of the same as above, Figure 6 is a longitudinal sectional view of the holding cylinder, and Figure 7 is the holding cylinder. 8 is a longitudinal sectional view of the same as above, FIG. 9 is a plan view taken across the tanks of the second embodiment, and FIG. 10 is a side view taken longitudinally of the tanks of the third embodiment.
Figure 11 is a plan view of another embodiment across the tank;
In the figure, No is the tank, 3 is the submersible pump, 3CL is the pump body, 3b is the discharge pipe, Da is the sleeve, q' is the collar, 3 is the opening of the tank, Mi is the bolt, Ri is the on-off valve, and 8 19 represents a water supply pipe, 19 represents a holding body, and 26 represents a drain pipe.

Claims (1)

[Claims] A submersible pump with a discharge pipe protruding from one end of a rod-shaped pump body, a tank having an opening slightly larger than the outer diameter of the pump body at the bottom of the side wall, and a flange at one end, the inner diameter of which is the same as that of the pump body. a sleeve whose outer diameter is slightly larger than that of the pump body and whose length is equal to that of the pump body, and which houses the pump body therein; and a bolt which watertightly fixes the collar of the sleeve to the opening of the opening on the inner surface of the tank. , a water supply pipe connected to the other end of the sleeve and leading into the tank; an on-off valve provided on the water supply pipe and operable from outside the tank; and a valve that protrudes from the pump body and passes through the opening of the tank to the outside. The protruding discharge pipe is held watertight from around it, and the sleeve hook is fixed to the outer surface of the tank by the bolt fixed to the side wall of the tank. A water storage tank characterized by being equipped with a drain pipe capable of draining water.