JPS61112782A - Suction and exhaust device for fluid containing solids - Google Patents

Abstract

PURPOSE:To simplify the construction of a suction and exhaust device by using only a vacuum pump of water seal type, equipping the pump not only with fluid suction function but also fluid exhaust function, and thereby sucking and exhausting muddy water including soil and sand. CONSTITUTION:A sealed tank 10 is connected with the sendout hole of a water seal type vacuum pump 1 through a communication pipe 13. This sealed tank 10 is equipped with an flowout hole 12, and connected to inside the casing 4 of the vacuum pump 1 through a prime water feedback pipe 14. The vacuum pump 1 is operated by utilization of muddy water in the tank 10 as prime water, to suck the muddy water including soil and sund from a suction hole 2, and it is exhausted from said flowout hole 12 of the tank 10.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a device capable of suctioning and discharging a solid-containing fluid such as water containing earth and sand, or a gas-liquid mixed fluid.

[Conventional technology]

Conventionally, devices for the above purpose include a vacuum generator for generating suction force and a discharge device for discharging fluid such as muddy water containing earth and sand. During operation, a vacuum generator generates negative pressure, the negative pressure flows into the storage tank, and the fluid is further discharged from the storage tank to the outside by a discharge device.

[Problem that the invention seeks to solve]

However, the above device configuration requires a vacuum generator and a discharge device separately, resulting in high equipment costs.

The present invention provides a vacuum generating device with not only a fluid suction function but also a fluid discharge function, thereby simplifying the device configuration and making it possible to manufacture the device at low cost. The purpose is to provide

[Means for solving problems]

In order to solve the above problems, in the present invention, the suction/discharge device is a water ring vacuum pump having a suction port and a discharge port containing solids, and a sealed tank having an inflow port and a discharge port is installed in parallel. The outlet and inlet are connected by a continuous pipe, and the closed tank and water ring vacuum pump are connected by a priming water return pipe.

Here, the water ring vacuum pump includes not only Elmo type and Nasche type water ring vacuum pumps, but also water ring Roots pumps, water ring centrifugal pumps, and water ring rotary pumps.

〔Example〕

Hereinafter, means for solving the above problems will be specifically explained based on the embodiment shown in the attached drawings.

In the first embodiment shown in FIG. 1, l is a water-ring type vacuum pump, and the vacuum pump 1 includes a casing 4 having a suction port 2 and a discharge port 3, and a vane 5 attached to the periphery thereof. It has a configuration in which a wheel 6 is rotatably arranged at an eccentric position. In addition, the suction port 2 is a muddy water suction pipe 8 containing earth and sand, etc.
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Note that a strainer may be attached to the muddy water suction pipe 8 in order to remove coarse dirt particles and prevent failure of the water ring vacuum pump 1.

In addition, IO is a sealed tank installed in parallel with a water ring type vacuum pump l, and the tank lO has an inlet 11 and an outlet 12 on its side. It is connected in communication with the outlet port 3 of the sealed vacuum pump 1.

Furthermore, 14 is a priming water return pipe that connects the lower part of the sealed tank 10 and the water ring vacuum pump 1, and returns a part of the muddy water that has flowed into the sealed tank 10 into the casing 4 of the water ring vacuum pump 1. It is something.

Next, a description will be given of the muddy water processing operation performed by the suction/discharge device that has the above-mentioned configuration.

First, when the water ring vacuum pump 1 is driven, as the impeller 6 rotates, part of the muddy water in the sealed tank 10 flows back into the casing 4 of the water ring vacuum pump 1 through the priming water return pipe 14, and at the same time the muddy water is sucked. The water seal type vacuum bong supplies a mixture of muddy water and gas through a pipe 8 to a closed tank 1 through a communication pipe 13.
0 and then discharged to the outside from the outlet 12.

As described above, in the present invention, substantially the water ring type vacuum pump 1
By using a chisel, muddy water can be effectively sucked and discharged.

In FIG. 1, the communication pipe 13 forms a bent portion 15 that extends into the closed tank IO and bends downward, and the open end of the bent portion 15 faces the bottom surface of the closed tank IO. With this configuration, it is possible to effectively prevent earth and sand in muddy water from accumulating on the bottom surface.

Further, other embodiments are shown in FIGS. 2 to 10.

The second embodiment shown in FIG.
2 is formed at the other end of a bent pipe 20 whose one end extends into the closed tank 10, and the stirred muddy water discharged to the bottom of the closed tank 10 can be effectively discharged. .

The third embodiment shown in FIG.
An opening 31 is also provided in the upper bent part of the bent pipe 30 having the same structure as above, so that muddy water can be taken in and discharged from both the upper and lower parts of the closed tank 10.

The fourth embodiment shown in FIG. 4 is characterized in that the bent portion 15 and bent tube 30 shown in FIGS. 1 to 3 are eliminated.

Furthermore, in the fifth embodiment shown in FIGS. 5 to 7, a side cover 40 having the same shape as the casing 4 of the water ring vacuum pump 1 is adjacent to the water ring vacuum pump 1 via a partition wall 40a. is divided into a suction chamber 42 and a delivery chamber 43 by a partition 41, a suction port 42M is provided in the suction chamber 42, and a suction boat 44 communicating with the inside of the casing 4 is provided in the partition 40a, while a delivery port 45 is provided in the delivery chamber 43. and a discharge port 4 communicating with the inside of the casing 4.
6 is provided on the partition wall 40a, and furthermore, the sealed tank 47 is connected to the suction chamber 42 through a priming water return pipe 48. Note that 49 is an outlet, and 50 is a communication pipe.

With this configuration, the suction/discharge action of the water ring vacuum pump 1 can be further improved.

In the sixth embodiment shown in FIGS. 8 to 10, a strainer 60 is provided in the closed tank 10 to prevent solid matter from flowing into the priming water. That is, FIG. 8 shows a case where a horizontal plate-shaped strainer 60 is installed in the closed tank IO, and FIG. 9 shows a case where the strainer 60 is installed at the opening of the priming water return pipe 14 on the side of the closed tank 10. FIG. 10 shows a case where a cylindrical strainer 60 is arranged concentrically within a cylindrical sealed tank IO.

〔Effect of the invention〕

As described above, in the present invention, fluid can be effectively sucked and discharged from solid anastomoses such as muddy water containing earth and sand using only a water ring vacuum pump, and equipment costs can be reduced. This effect is achieved.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional front view of a suction/discharge device according to a first embodiment of the present invention, FIG. 2 is a cross-sectional front view of a suction/discharge device according to a second embodiment, and FIG. 3 is a cross-sectional front view of a suction/discharge device according to a second embodiment. Suction applied to
4 is a cross-sectional front view of the suction/discharge device according to the fourth embodiment; FIG. 5 is a cross-sectional side view of the suction/discharge device according to the fifth embodiment; FIGS. FIG. 7 is a cross-sectional view taken along line 1--1 and line II--II in FIG. 5, and FIGS. 8 to 10 are front cross-sectional views of the sixth embodiment. In the figure, l: water ring vacuum pump 2: suction port 3: outlet port 4: casing 8: muddy water suction pipe lO: sealed tank 11: inlet 12X outlet 13: communication pipe 14: priming water return pipe 15: bent part 20: Bent pipe 40: Side cover 44; Suction boat 46: Discharge boat 47 Sealed tank 48 Priming water return pipe 49 Outlet 50 Communication pipe 60 Strainer Fig. 1 Fig. 2 Fig. 3 Fig. 5 Fig. 6 Fig. 8

Claims (1)

[Claims] 1. A water ring type vacuum pump having a suction port and a discharge port, a closed tank having an inlet and a discharge port is installed side by side, and the discharge port and the inlet are connected by a communicating pipe, and the closed tank and the water ring type vacuum pump are installed side by side. A suction/discharge device for solids-containing fluid, characterized in that a vacuum pump is connected through a priming water return pipe.