JPS6244105B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in self-connecting submersible blowers.

The present applicant previously proposed Japanese Patent Application Laid-Open No. 54-85405 as an installation device for a submersible blower in which the suction and discharge piping is fixed on the land side and the blower assembly and part of the suction and discharge pipes are immersed in the water tank. In this product, the flanges at the ends of the suction and discharge pipes on the blower side are opened downward, and are supported by upwardly opened flanges at the ends of the suction and discharge pipes fixed on the land side. The solid body was guided when going up and down by engaging with a guide device installed on the water tank side. Therefore, even if a cushioning material is interposed between the flange abutting portions, the vibration generated by the blower is and noise are all propagated to the aquarium wall.

There is no problem if the amount of vibration and noise is small or if there are no buildings above the tank, but for example in a hotel, etc.
When a condominium building, etc. is equipped with a blower for air conditioning, water treatment, or other purposes, and it is installed in an underground water tank for installation space or noise prevention purposes, Vibration and noise may propagate toward the building walls, causing unexpected noise pollution.

In view of the above-mentioned circumstances, the present invention also fixes the suction and discharge piping on the land side, and assembles the blower assembly and suction and discharge piping.
In order to immerse a part of the discharge pipe into the water tank, the piping section can be automatically connected and disconnected by raising and lowering without using bolts or nuts, etc., and the blower assembly is completely independent. The purpose is to prevent vibrations and noise generated from the main body from propagating to the tank wall.

In other words, when the blower assembly is lowered, the flange with a locking claw provided at the tip of the suction/discharge pipe on the blower side engages with the flange provided at the tip of the piping on the land fixed side on the center of gravity of the blower assembly, thereby being fixedly connected. At the same time, the blower side suction
By interposing a vibration-proof joint with an effective buffer in the tension direction in the middle of the discharge pipe, a direct connection between the metal parts of the blower assembly and the upper pipe is eliminated, and at the same time a buffering effect is provided. The first
Further, the blower assembly is guided when going up and down by engagement with a guide means provided on the land fixed side above the vibration-proof joint, and the blower assembly is guided to the water tank wall via the guide means during operation. The present invention relates to an automatically connected submersible blower having a second feature that there is no fear of vibration or noise propagation.

To explain in detail based on the embodiment shown in the figure, 1 and 2 are a suction pipe and a discharge pipe, respectively, which are placed on land and fixed by clamps 4 on a common platform 3 provided with an arcuate cut part, and the tip on the blower side is connected to a water tank. Connecting flanges 1a and 2 protrude above 5 and are horizontally bent inwardly toward each other, and each has an opening surface slightly inclined upward at the tip.
a is provided, and 6 is a silencer provided at the other end of the suction pipe 1.

Reference numeral 7 denotes a submersible Roots blower assembly in which a motor 8 and a blower main body 9 are directly connected in a watertight manner, and vibration-proof joints 12 are installed at the upper ends of a second muffler 10 and a muffler 11 connected to the suction port and the discharge port, respectively. Intermediate pipes 13 and 14 bent horizontally outward on the center of gravity of the blower assembly are connected through the pipes, and the ends of both pipes 13 and 14 have open end faces with the same inclination angle as the flanges 1a and 2a, respectively. slope downward,
Connection flanges 13 with substantially equal intervals
a, 14a are provided. Further, the intermediate pipe 1
3 and 14 are reinforcing materials 15 and 1 at the upper part, respectively.
6, and a locking pawl 15a, which bends and protrudes downward beyond the upper part of the flanges 13a, 14a.
16a are formed at both ends, and both locking claws 15a, 1
The flanges 1a and 2a are wedge-shaped by engagement with the inclined surfaces formed on the upper rear surfaces of the flanges 1a and 2a, thereby connecting the flanges 1a and 13a and the flanges 2a and 14a and holding the blower assembly 7. It has been made so that it can be done.

As shown in detail in FIG. 4, the anti-vibration joint 12 has a flanged rubber joint 12c between large flanges 12a and 12b connected to piping side flanges at both ends.
The large flange 12b
The long bolt 12d fixed to the large flange 12a
A commercially available product in which nuts 12e and 12f are screwed through the large flange 12a at positions slightly apart from the large flange 12a has a rubber cushioning material 12g interposed between the nut 12e and the large flange 12a.

Reference numeral 17 denotes two guide rods 15b, which are erected with appropriate lengths at the center distribution position of the common platform 3;
Reference numerals 16b denote arm fittings that protrude horizontally from the reinforcing members 15 and 16, respectively, and have semicircular guide portions 15c and 16c bent outward at their tips, and are fitted inside the two guide rods 17. They are fitted together so that they can guide the blower assembly 7 when it is raised and lowered. Further, both the intermediate pipes 13 and 14 have an annular member 15 integrally provided at the inner end of the reinforcing member in a facing manner.
A compression spring 18 is interposed between d and 16d to strengthen the clamping direction and the flange adhesion force. 19 is each reinforcing material 15, 1
6. This is a lifting hook protruding from the upper end.

Next, the effect will be explained. The blower assembly 7 is attached via a lifting hook 19 to a suitable chain block or the like.
and guide parts 15c and 16c on guide rod 1.
7, 17 and then lowered, the flanges 1a and 13a, guided by the guide rod 17,
2a and 14a automatically abut each other, and the locking claws 15a, 16a and the sloped portions of the back surfaces of the flanges 1a, 2a engage in a wedge shape, thereby holding the blower assembly 7 in that position.

In this case, the entire weight of the blower assembly 7 is supported by 12 g of cushioning material interposed in the anti-vibration joint 12, but the buoyancy of the sealed blower assembly 7 and the hollow silencers 10 and 11 Since a considerable amount of load reduction occurs under water, a small 12g cushioning material is enough to withstand the load.

If you start operation in this state, the blower body 9
All of the vibrations and noise generated are absorbed by the vibration-proof joint 12 and hardly transmitted to the upper pipes after the intermediate pipes 13 and 14 and to the wall surface of the water tank 5.

Of course, the intake noise and air supply noise of the blower and the gear noise generated in the timing gear room are eliminated by the silencers 6 and 1 shown in the figure.
0, 11, and although not shown, the sound can be muffled by a separately provided soundproofing means.

In this way, all vibrations are blocked by the anti-vibration joint 12, so the arm fitting 15 serves as a guide means when going up and down.
b, 16b, guide rod 17, etc., and therefore the connection flanges 1a, 13a, 2a, 14
No jumping phenomenon occurs in part a.

In the above explanation, a guide device for lifting is provided, but even if the guide device is not used, connection can still be made visually because the flange connection part is on land, and the connection flange is inclined. Although it is best for close contact, even if it is vertical, it will be subjected to the wedge action by the locking claws 15a, 16a with the degree of freedom given by the vibration-proof joint 12, and also by the compression spring 18. Since it is given pressure bonding force, it can adhere well.

Also, although it is best to have two guide rods 16,
It is also possible to use a rectangular one, or a round one provided with an appropriate key-shaped detent.

Although the blower body 9 was explained as a roots type,
It can be carried out in the same manner using other formats.

As described in detail above, when using the submersible blower of the present invention, the blower assembly and the water tank, which are the sources of vibration and noise, are not directly connected, and an effective cushioning material in the tensile direction is provided in the middle of the piping. Since all the vibration from the blower assembly side is absorbed by the vibration joint, there is no vibration propagation to the water tank wall, and the guide device when raising and lowering the blower assembly can also be installed at a position where vibration is not transmitted by the vibration-proof joint. It is possible to obtain a self-connecting submersible blower device that is relatively inexpensive and free of pollution.

[Brief explanation of the drawing]

Figure 1 is a front view showing one embodiment of the present invention, Figure 2 is a front view showing one embodiment of the present invention;
The figure is a plan view, FIG. 3 is a partially cutaway side view, and FIG. 4 is an enlarged partially sectional view showing details of the vibration-proof joint. In the figure, 1 and 2 are suction and discharge pipes, 5 is a water tank, and 7
is a blower assembly, 12 is a vibration-proof joint, 12g is a buffer material, 13 and 14 are intermediate pipes, 15a and 16a are locking claws, 17 is a guide rod, 15c and 16c are guide parts, 1a, 2a, 13a, 14a indicates a connecting flange.

Claims (1)

[Scope of Claims] 1. In a blower assembly and a part of the suction/discharge piping that are submerged in water, the ends of the automatic connection side of the suction/discharge piping fixed on land in a parallel manner protrude an appropriate length above the water tank, and A connecting flange is fixed at the tip of the inwardly bent horizontally, and in addition to this, the suction/discharge pipe connected to the blower assembly is a vibration-proof joint with a cushioning material added in the middle that is effective in the tensile direction. The upper end is bent horizontally outward on the center of gravity of the blower assembly, and a connecting flange is fixed to the tip, and the distance between the end faces of the flanges on the land side and the blower side is approximately equal, and An automatic connection type characterized in that each flange has a locking pawl protruding outward from the top, so that the blower assembly can be held when both pipes are connected by engagement with the land side connection flange. Submersible blower. 2. The self-connecting submersible blower according to claim 1, wherein the land-side connection flange has an end surface slightly inclined upward, and the blower-side connection flange has an end surface inclined downward at the same angle as the land side. 3. For blower assemblies and parts of the suction/discharge piping that are submerged in water, the ends of the automatic connection side of the suction/discharge piping fixed on land in parallel should protrude an appropriate length above the water tank and be horizontal inward. A connecting flange is fixed at the tip of the suction/discharge pipe, which is bent to the side, and separately connected to the blower assembly. The flange is bent horizontally outward on the center of gravity, and a connecting flange is fixed to the tip, and the distance between the end faces of the flanges on the land side and the blower side is approximately equal, and the flange on the blower side is bent outward from the top. A protruding locking claw is provided on each side, and the blower assembly can be held in the state where both pipes are connected by engagement with the land side connecting flange.Furthermore, a locking pawl is provided on each of the land side connecting flanges so that the blower assembly can be held in the state where both pipes are connected. Two guide rods are erected, arm fittings are appropriately protruded from the blower side piping, and a guide portion is provided at the tip to guide the blower assembly when it is raised or lowered by engagement with the two guide rods. An automatic connection submersible blower characterized by: 4. The self-connecting submersible blower according to claim 3, wherein the land-side connection flange has an end surface slightly inclined upward, and the blower-side connection flange has an end surface inclined downward at the same angle as the land side.