JPS61223286A - Fluid ring pump - Google Patents

Abstract

PURPOSE:To prevent the occurrence of noises by forming a discharge port of a fluid ring pump with an aggregate of fine paths to discharge fine bubbles of discharged gas into enclosed liquid. CONSTITUTION:A discharge port 5 of a fluid ring pump is formed of an aggregate of fine paths and formed on the outside with a discharge chamber 7 in which enclosed liquid is reserved. Gas compressed in a pump chamber is changed into fine bubbles as it passes through the discharge port 5 and injected into the enclosed liquid in the discharged chamber 7 to be discharged from a discharge pipe 3. As the discharged gas is discharged as fine bubbles, noises then are not produced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a fluid ring pump having a discharge control plate with an impeller located on its side, and particularly relates to measures suitable for low-noise operation.

[Background of the invention]

Among the methods for setting discharge holes on the partition wall following the discharge pipe, a known example for the purpose of noise reduction is Japanese Patent Publication No. 51-45082. The water surface in the pressure chamber formed by Further consideration should be given to the formation of bubbles in the discharged gas, which is a major factor in reduction.

[Purpose of the invention]

An object of the present invention is to provide a measure that can reduce the discharge noise when compressible gas and fluid are simultaneously discharged in a fluid ring pump, and the unpleasant lumps caused by mid-yavitation when a high vacuum is created on the suction side. be.

[Summary of the invention]

Therefore, in the present invention, the discharge port has a slit shape, a plurality of small diameter holes,
It is possible to create bubbles by creating microscopic parts using mesh IK and releasing the discharged gas into the liquid following the microscopic parts. Because the gas pressure rises above the liquid level in the pressure chamber, the gas that has passed through the discharge port above the liquid level in the pressure chamber is allowed to pass through the liquid in the discharge pipe, allowing the gas to pass through the partition wall above the node of the pressure chamber. A fluid ring that has a small passage section on the top and a discharge port that communicates with the discharge pipe, allowing the discharged gas in the pressure chamber to be discharged as bubbles into the liquid in the discharge pipe, resulting in a noise-reducing effect. It provides pumps.

[Embodiments of the invention]

One embodiment of the present invention will be explained below mainly with reference to FIG. 1 and FIG. 8.

FIG. 1 shows a cross section of a fluid ring pump, showing a discharge control plate 1, a partition wall 2, a discharge pipe a, a discharge control,
A pressure chamber 4 (which has a discharge port 5 that communicates the pressure chamber and a discharge pipe as a component) is sandwiched between a plate and a spacer.

The discharge port 5 has a slit at the top! , j) As it extends downward, the width of the slit increases, and they come together at a large opening.

The reason why the width of the slit is widened as the discharge port 5 extends downward is because as the amount of discharged gas increases, the velocity of the gas passing through the discharge port 5 increases, thereby reducing the velocity loss that occurs. be. Also, if the slit has a wide opening, 1) K will occur.

Fluid ring pumps suck gas and liquids including mist,
Since it can be compressed, the part of the rice mist attached to the narrow slit was moved to the large opening to make it easier to remove.

This shape of the ejection opening includes one in which the number of slits increases toward the bottom as shown in Fig. 5, one that uses multiple small diameter holes as shown in Fig. 6, and one that uses a combination of holes and slits as shown in Fig. 7. It is also possible to do so.

You can also use ivy, small pieces with slits or holes to pass through the holes.

Figure 8 shows an example where the gas outlet and water outlet are almost separated.
The mist, which has a higher specific gravity than the gas, is discharged from the water outlet together with water, and is characterized by the fact that the gas outlet is less likely to become clogged with mist. The discharge port may have a shape with a slit or a large number of small diameter holes, or a shape where a large opening is covered with a net, a small piece with slits, or small holes.

〔Effect of the invention〕

According to the present invention, a fluid ring pump having an intake/exhaust control plate on the side surface of the blade is attached, and discharged gas is made into bubbles of a size suitable for noise absorption and discharged into the fluid.
It has the effect of reducing noise.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of a fluid ring pump according to one embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1, and FIG. 8 is another embodiment of a fluid ring pump according to the present invention. A vertical cross-sectional view showing an example, FIG. 4 is a view showing the A-A cross section of FIG. 8, and FIG.
9 to 9 are diagrams showing the shapes corresponding to the discharge ports in FIGS. 1 and 8, respectively, and in particular, FIG. 9 is a diagram showing a cross section taken along line AA in FIG. 8. l...discharge control board, 2...partition wall, 8...discharge pipe,
4...Pressure chamber, 5...Discharge port, 6...Bubble. $ 5 Figure $ 6 Figure $ 7 z q Mouth

Claims (1)

[Claims] A partition wall that forms a pressure chamber by a combination of an impeller, a discharge control plate located on a side surface of the impeller, and the discharge control plate, a discharge pipe that is continuous with the partition wall, and a pressure chamber and the discharge pipe are communicated with each other. A fluid ring pump having a discharge port as a component, characterized in that all or part of the discharge port above the liquid surface of the pressure chamber has a minute passage section configured in the form of a slit, a small diameter hole, or a mesh. Fluid ring pump.