JPH05312143A - Booster pump device of high pressure water pump pumping water mixed with solid material - Google Patents

Abstract

PURPOSE:To avoid mixing-in of highly concentrated solid material and air even when the water level of a water tank for a pump is changed, and to pro vide a booster pump device of high pressure water pump for lifting water mixed with solid material which is reduced in the size of the entire unit so that it can be put on an automobile. CONSTITUTION:In a device for pumping a liquid including solid material into a water tank 9 by a high pressure water pump 1 through a fine suction strainer 6, a discharge port of a submerged pump 2 provided with a float in the water tank 9 and a filter provided outside of the water tank 9 are connected together through a flexible hose 5, so that the submerged pump 2 provided with the float is moved vertically following the water level of the water tank, and mixing-in of highly concentrated solid material and air is thus avoided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a booster pump device for a high pressure water pump for pumping water containing solid matter.

[0002]

2. Description of the Related Art As a conventional technique of this kind, Japanese Patent Laid-Open No. 63-
There is a water supply recirculation device to a jet nozzle in a recovery device for sludge of sewer disclosed in Japanese Patent No. 297640. FIG. 3 is a plan view showing the overall structure of a settling tank in the water supply / reflux device, FIG. 4 (a) is a front view of the primary and secondary settling tanks of the settling tank, and FIG. 4 (b) is a final settling tank. It is a front view of the final precipitating tank. As shown in FIG. 4, an intake pipe 33 having a float 32 is arranged in the lower part of the primary settling tank 31 a, and an intake port 33 a is provided in the vicinity of the float 32 of the intake pipe 33. The water supply port 33b is opened near the bottom of the secondary precipitation tank 31b.

Similarly, the secondary and tertiary settling tanks 31b, 31
An intake pipe with a float having the same structure is laid in c. Therefore, in the 1st-3rd settling tanks 31a-31c, as the water level rises, the water intake 33 of the water intake pipe 33
a also rises, and only the upper layer water of the water stored in the settling tank is sent to the next settling tank. And, as shown in FIG. 4, in the final settling tank 31d, the preceding third settling tank 31c is provided.
The water inlet 33b of the intake pipe is opened, and the final settling tank 31d is provided with a water purification tank 35 by a weir plate 34. A suction pipe 36 to a high pressure pump (not shown) is opened in the upper layer water of the final settling tank 31d so that only the upper layer water is fed to the high pressure water pump.

[0004]

In the settling tank of the above construction, the float 3 is placed in the first to third settling tanks 31a to 31c.
2 is provided, and the intake port 33a is provided in the vicinity of the float 32 of the intake pipe 33,
Even if the water level in the settling tank fluctuates, the upper layer water of the final settling tank 31d is sent to the high-pressure pump, and it is possible to avoid mixing of high-concentration solid matter and air. However, since the entire device is large and complicated, it is unsuitable for mounting on an automobile or the like.

The present invention has been made in view of the above points, and eliminates the above problems and avoids the inclusion of highly concentrated solid matter and air even if the water level of the pump water receiving tank fluctuates, and the entire apparatus It is an object of the present invention to provide a booster pump device for a high-pressure water pump that pumps down solid-state mixed water so that it can be mounted on an automobile or the like.

[0006]

In order to solve the above problems, the present invention relates to a device for pumping a solid-containing liquid from the inside of a water receiving tank to the outside through a fine suction strainer with a high-pressure water pump. By connecting the outlet of the submersible pump with a float and the filter provided outside the receiving tank with a flexible hose, the submersible pump with a float can follow the water level of the receiving tank and move up and down, so that high-concentration solids Also, it is characterized in that the inclusion of air is avoided.

[0007]

According to the present invention, as described above, the outlet of the submersible pump with a float in the water receiving tank and the filter provided outside the water receiving tank are connected by a flexible hose, and the submersible pump with a float is connected to the water receiving tank. Since it can move up and down according to the water level, it is possible to avoid mixing of highly concentrated solid matter and air even if the water level of the water receiving tank fluctuates.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are views showing an example in which the booster pump device of the present invention is adopted in a washing vehicle. This device is a device for supplying water from the water receiving tank 9 to the plunger pump 1, and a centrifugal submersible pump 2 having a float 3 as a booster pump is arranged in the water receiving tank 9. Since the centrifugal submersible pump 2 is provided with a float 3, it can be operated by moving up and down and floating while following changes in the water surface.

Reference numeral 12 is a sluice valve provided on the wall surface of the water receiving tank 9. The sluice valve 1 is provided from the discharge port of the centrifugal submersible pump 2.
Flexible hoses 5 are connected between the two. This facilitates the vertical movement of the pump from the upper limit water level (HWL) to the lower limit water level (LWL) of the water receiving tank 9. Reference numeral 7 is a capturer cable that sends electric power to the drive motor of the centrifugal submersible pump 2. When hydraulic pressure is used for the drive of the centrifugal submersible pump 2, a hydraulic hose that replaces the capturer cable 7 is attached with sufficient slack.

Reference numeral 4 is a strainer with manual scraping. The strainer 4 with manual scraping detects clogging with a pressure gauge 17, and while turning the handle 4a, the sludge extraction valve 1
Open 4 and drain solids timely. Reference numeral 11 is a switching valve connected to the discharge port of the strainer 4 with manual scraping, and the switching valve 11 communicates with the water receiving tank 9 via a sluice valve 13. At the time of overhauling the strainer 4 with manual scraping, the switching valve 11 is switched and the sluice valve 13 is opened to continue the operation of the centrifugal submersible pump 2.

Reference numeral 6 denotes a strainer arranged between the plunger pump 1 and the switching valve 11. The strainer 6 is disassembled only when the plunger pump 1 is stopped to clean the clogging.

Reference numeral 15 denotes a plunger pump driving pulley. The plunger pump 1 is driven by a driving source such as a motor (not shown) via the plunger pump driving pulley 15.
Is designed to drive.

[0013]

As described above, according to the present invention, the time until the strainer becomes clogged is extended, air is not sucked, and the strainer can be miniaturized so that it can be mounted in an automobile or the like. When used for, it can be installed in a narrow space, and maintenance and inspection can be easily performed.

[Brief description of drawings]

FIG. 1 is a plan view showing an example in which a booster pump device of the present invention is adopted in a washing vehicle.

FIG. 2 is a front view showing an example in which the booster pump device of the present invention is adopted in a washing vehicle.

FIG. 3 is a plan view showing the overall configuration of a conventional settling tank in a water supply / reflux device.

FIG. 4 (a) is a first and second primary settling tank of the related art.
The front view of the next settling tank, FIG.4 (b) is a front view of the conventional last settling tank and the last front-stage | paragraph precipitation tank.

[Explanation of symbols]

 1 Plunger pump 2 Submersible pump 3 Float 4 Strainer with manual scraping 5 Flexible hose 6 Strainer 7 Hydraulic hose or captain ear cable 8 Manhole 9 Water receiving tank 10 Deposited solids 11 Switching valve 12 Gate valve 13 Gate valve 14 Sludge extraction valve 15 Plunger pump drive pulley 16 Chassis rear axle tire 17 Pressure gauge

Claims (1)

[Claims] 1. A device for pumping a solid-containing liquid from the inside of a water receiving tank to the outside through a fine suction strainer with a high-pressure water pump, the discharge port of a submersible pump with a float in the water receiving tank, and the outside of the water receiving tank. It is characterized in that the submersible pump with a float can be moved up and down by following the water level of the water receiving tank by connecting it to the filter provided on the flexible hose to avoid mixing of high-concentration solid matter and air. A booster pump device for a high-pressure water pump that pumps solid-state mixed water.