JPH05126085A - Sand pump with double wing vacuum pump and vacuum pump unit - Google Patents

Abstract

PURPOSE:To elongate the life of the shaft of a pump which treats waste water of sewer pipes, sewage-treatment plants, rivers, lakes, ponds, etc., and to substantially improve pump functions such as pumping power. CONSTITUTION:High vacuum generation pumps 8, 8 having a cool water suction opening 6 at the local part are provided in opposition to each other on both sides of the main shaft of a motor. In addition, a sand pump with a double wing vacuum pump integrally combined with a spiral sand pump 13 by extending one side of the shaft, a receiver tank 18 whose upper part is connected to the suction opening 14 of a high vacuum generation pump 8 via piping 24 and which suctions and stores sludge from a suction hose end connection 19, the sludge opening 20 of the tank, and the suction opening 16 of the sand pump 13 are connected via a connection pipe 21. A cooling tower 26 which separates steam from exhaust introduced via piping 25 from the exhaust opening of the high vacuum generation pumps 8 on both sides so that the exhaust can be reused is installed on a distilled water tank like a hollow block 33.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sand pump with a double-wing vacuum pump, which is a combination of a vacuum pump and a sand pump,
The present invention relates to a vacuum pump unit using this pump.

[0002]

2. Description of the Related Art Conventionally, vacuum pumps and sand pumps are well known and have been used independently. However, sand pumps are used in wastewater treatment such as sewer pipes, sewage treatment plants, and other rivers. Has been done.

[0003]

However, since air and air bubbles are mixed in the sludge water, it foams in the pump and causes a mechanical failure, or the gas is mixed so that the pump is unevenly pressurized. This causes vibration, failure of the bearing, failure of the shaft seal, etc., and there is a limit to lift.

In view of such a point, the present invention is a double blade in which a high vacuum generating pump is attached to both shaft portions of a main shaft of an electric motor so as to face each other, and a shaft on one side is further extended to integrally combine a sand pump. Formed as a sand pump with a vacuum pump, further, by the vacuum pump from the upper part of the receiver tank of the adjoining and negative pressure, sludge water is sucked into the receiver tank with a suction hose to be stored and separated into gas and sludge, The gas is pumped to the vacuum pump, the sludge water is pumped and discharged to another place from the sand pump connected to the drainage port, and the temperature of the gas and water extracted by the vacuum pump rises due to the compression heat of the vacuum pump. By installing a vacuum pump unit that is cooled in the cooling tower of
The balance of the shaft thrust is improved, the life of the shaft is extended, the generation of bubbles in the pump is reduced, the suction force and the lift are increased, and the pump function is improved. The purpose of the present invention is to significantly reduce the failure of the shaft sealing portion.

[0005]

In order to achieve the above object, the present invention provides a vacuum pump casing capable of sucking water from local parts in which both shaft portions of a main shaft of an electric motor are attached to opposite sides of a motor case. A high-vacuum generation pump that extends inside and has an impeller attached to its shaft part, and a spiral sand pump with an impeller attached to the shaft tip part that extends on one side of the shaft is integrated with the vacuum pump casing on one side. A sand pump with a double-wing vacuum pump combined with the shape is provided. The high vacuum generation pump has an intake port and an exhaust port, and the spiral sand pump has a mud suction port connected to a vacuum pump or the like on the front surface and a mud discharge port provided on the upper portion.

[0006] The above-mentioned sand pump with a double-blade type vacuum pump, a receiver tank which is connected to the high-vacuum generation pump and sucks and stores sludge from the suction hose connection port, and a high-vacuum generation pump on each side of the middle part. A cooling tower that has an inlet pipe for introducing exhaust gas and discharges and cools it inside is installed as an integral unit on a stand-type makeup water tank with a hollow interior. A suction port for sucking water in the makeup water tank is provided at a local portion of the high vacuum generating pump, and a suction pipe is connected to the suction port. Both shafts of the main shaft of the electric motor are sealed with a W seal type mechanical seal in the pump.

The drainage port at the bottom of the receiver tank and the suction port provided at the front of the sand pump are connected by connecting pipes, and the intake ports of the high vacuum generating pump and the exhaust port at the top of the receiver tank are connected to each other. To each of the high-vacuum generation pumps so that the air and moisture from the exhaust ports of both high-vacuum generation pumps are sent to the inlet pipe port of the cooling tower. It is discharged from the upright pipe connected to the mouth toward the umbrella-shaped diffusion plate in the cooling tower, and the air flow sucked from the lower blind-shaped outside air intake part by the rotation of the cooling fan motor causes the gas to flow from the upper part to the outside and the water A double-bladed sand pump with a vacuum pump was used, which passed between the heat exchange packings cooled by the countercurrent of the air flow, dropped from the open lower part into the makeup water tank, and was circulated. Vacuum Po Constitute a Puyunitto.

[0008]

According to the present invention, the rotation of the main shaft of the electric motor increases the degree of vacuum in each of the high vacuum generating pumps mounted on the opposite sides of the electric motor by rotating the impeller. If the port is connected to the exhaust port in the upper part of the receiver tank, the inside of the receiver tank will have a low pressure, and the degree of vacuum will cause the suction hose attached to the connection port to suck and store the sludge water in the receiver tank. Then, the sludge water in the receiver tank is sucked into the spiral sand pump by the rotation of the impeller through the connecting pipe, and is pumped and discharged from the discharge port to another predetermined place.

At this time, since the temperature inside the high vacuum generation pump rises due to the compression heat of the vacuum pump, the water in the makeup water tank is sucked by the vacuum of the high vacuum generation pump itself from the suction pipe hanging down in the makeup water tank. In addition to cooling, the gas and water extracted from the upper part of the receiver tank by the high-vacuum generation pump pass through the piping from the inlet of the cooling tower to the inside of the cooling tower from the bottom to the top, and collide with the umbrella-shaped diffusion plate. When the cooling fan motor rotates, the outside air is sucked in from below, contacts the water droplets, and is cooled by the countercurrent flow of the air, and the water passes between the heat exchange fillers. Then, it falls into the lower makeup water tank and is circulated for reuse.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a sand pump with a double-blade vacuum pump according to the present invention, in which both shaft portions 3 and 4 of a main shaft 2 of an electric motor 1 are shown.
Is extended into the casings 9 and 9 of the high vacuum generating pumps 8 and 8 capable of sucking water from the local parts which are attached to the opposite sides of the motor case 5, and the impellers 10 and 10 are attached to the casings 9 and 9. Sand shaft casing 1 with shaft 4 extended
A spiral sand pump 13 having an impeller 12 mounted therein is integrally formed with the high vacuum generating pump casings 8 and 8.

Reference numeral 15 is an exhaust port of the high vacuum generating pump, 16 is a suction port of the sand pump 13, and 17 is a discharge port thereof. Bearings 34, 34 on both sides of the electric motor and the high vacuum generating pump 8,
The space between the shaft portion on the one side of the casing in 8 is sealed by W seal type mechanical seals 35, 35, respectively.

FIG. 2 is a front view showing a vacuum pump unit using a sand pump with a double-bladed vacuum pump.
FIG. 3 is a plan view excluding the receiver tank, in which 14 is an intake port of the high vacuum generation pump, 15 is an exhaust port,
Reference numeral 16 is a suction port of the sand pump 13, and 17 is a discharge port thereof. Reference numeral 18 is a receiver tank that is installed on the upper side of the sand pump with a double-blade type high vacuum generating pump and sucks up and stores sludge. Suction port 1 of sand pump 13
6 and 6 are connected by a connecting pipe 21.

Further, the upper outlet 2 of the receiver tank 18
2 are provided with branch exhaust ports 23, 23, and these branch exhaust ports 2
3 and the intake ports 14, 14 of the high vacuum generating pumps 8, 8 on both sides are connected by pipes 24, 24, respectively, and the exhaust ports of both high vacuum generating pumps 8, 8 are pipes 2.
5, 25 are connected to an introduction pipe 27 of a cooling tower 26 that introduces the exhaust gas to separate and cool air and water.

Exhaust port 1 of the high vacuum generating pumps 8, 8
A cooling tower 26 for introducing air and water from 5 and 15 to separate water and water and cooling, and a sand pump with a double-blade type vacuum pump combined in the integral type are provided in a hollow flat bed-like makeup water tank 33. Install side by side on top.

The operation of the high vacuum generating pumps 8 and 8 causes a negative pressure in the receiver tank via the pipe 24 to generate a vacuum, so that sewage, sludge and the like to be treated enter the receiver tank from the suction hose connection port 19. It is sucked and stored, and the sludge water can be discharged from the discharge port 20 through the connecting pipe 21 to the discharge port 17 of the spiral sand pump 13 by a suitable hose to a predetermined place, about 80 m in depth and 1 km in the lateral direction. It is possible to suction the length of, and the pump has a high pumping and discharging capacity.

In the high vacuum generating pumps 8, 8, the temperature of the pumps rises due to the heat of compression, and the degree of vacuum decreases due to the temperature rise, so that water is sucked into the local parts of the high vacuum generating pumps 8, 8. A suction port 6 is provided, and a suction pipe 7 hanging in the makeup water tank is attached to the suction port 6 so that water is sucked up and cooled.

For example, a cooling fan motor 28 is installed in the upper portion of the cooling tower 26, and an upright pipe 30 connected to the introduction pipe 27 is provided inside the umbrella, and an umbrella-type diffusion plate 29 with which the emitted exhaust gas collides with the upper portion thereof. The structure is provided with a heat exchange filling material 31 in which a small corrugated sheet is wound and packed immediately below and a lattice type outside air suction portion 32, and a lower portion is opened to a makeup water tank 33.

The exhaust gas introduced into the cooling tower 26 is discharged from the upright pipe 30 in the cooling tower 26 toward the umbrella-shaped diffusion plate 29, dispersed by collision, and rotated by the cooling fan motor 28 to form a grid. Due to the counterflow of the air flow sucked from the fresh air intake portion 32, the air is discharged to the outside, the water passes through the heat exchange filling material 31, is cooled, and falls into the makeup water tank 33 at the lower part, Can be used in circulation.

The vacuum pump unit of the device of the present invention shown in FIGS. 2 and 3 is installed on a truck or other traveling vehicle so that it can be replenished even in a place where aftertreatment such as sewage or tunnel construction or cooling water cannot be taken. It sucks the water in the water tank and prevents the vacuum pump from overheating, so it can be used continuously for a long time.

The cooling water is supplied to the makeup water tank by
It is not particularly necessary during use, but when replenishing it, the cooling tower 26
It is designed such that the water flows in from the upper part of the tank and always maintains a predetermined amount of water by a gauge, and the makeup water tank 33 is appropriately provided with a drain port, a cleaning port, and the like. 4 and 5 are a right side view and a left side view of the vacuum pump unit.

[0021]

As described above, according to the present invention, the impellers are attached to both shaft portions of the main shaft of the electric motor, the high vacuum generating pumps are attached to both sides in a facing shape, and the shaft on one side is further extended to form a spiral blade. The double-blade type vacuum pump sand that is combined with the spiral-type sand pump that is attached is configured, and because of the double-wing type, the axial thrust is well balanced, the shaft life is extended, and an extremely high degree of vacuum can be obtained. You can get a lot of displacement,
Therefore, the suction force and the lift force can be increased to a depth of 80 m in the vertical direction,
The pumping function can be significantly improved by allowing 1 km of suction on the side.

Further, a high-vacuum generation pump is used to extract air from the upper part of the adjacent receiver tank, and a suction hose sucks sludge water into the receiver tank under negative pressure. The air in the sludge water can be reliably separated by the receiver tank to the high vacuum generation pump and the sludge water can be sent to the sand pump by the receiver tank. As a result, pulsation, vibration of the shaft, etc. can be prevented, and failures of the bearing portion, the shaft, and the shaft sealing portion can be reduced, and the above conventional problems can be solved.

Further, since the temperature of the air and water extracted by the high vacuum generating pump rises due to the compression heat of the high vacuum generating pump, cooling is performed by the suction of water by the vacuum degree of the pump itself and the high vacuum generating pump. By making the system that recycles the water by cooling the exhaust gas from the
As a vacuum pump unit, it can be installed on a running vehicle such as a truck, and it can move freely and has a large pumping power, so it can easily handle sewage, sludge, post-treatment of subways, tunnel construction, etc. Even in places where it cannot be removed, it has the effect of reducing pump overheating and allowing smooth pump operation for a long time.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a sand pump with a double-bladed vacuum pump according to the present invention.

FIG. 2 is a front view of a vacuum pump unit using a sand pump with a double-blade vacuum pump showing an embodiment of the present invention, with a part cut away.

FIG. 3 is a plan view with the receiver tank removed.

FIG. 4 is a right side view of FIG.

FIG. 5 is a left side view of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Electric motor 2 ... Main shaft 3, 4 ... Both shaft parts 6 ... Water suction port 8 ... High vacuum generation pump 13 ... Spiral sand pump 14 ... High vacuum generation pump suction port 15 ... High vacuum generation pump exhaust port 16 ... Sand pump suction port 17 ... Sand pump discharge port 18 ... Receiver tank 19 ... Suction hose connection port 20 ... Receiver tank drainage port 21 ... Connection pipes 24,25 ... Piping 26 ... Cooling tower 33 ... Replenishment water tank

Claims (3)

[Claims] Claims: 1. A main shaft of an electric motor is provided with a vacuum pump casing, which is attached to both sides of an electric motor case, and a left and right symmetrical high vacuum generating pumps by impellers, on both shaft portions, and the shaft on one side is further extended. A sand pump with a double-bladed vacuum pump that combines a spiral sand hone with an impeller integrated with a high vacuum generating pump casing. 2. A vacuum pump casing having a suction port for cooling water locally attached to opposite sides of a motor case on both shafts of a main shaft of the motor, and a bilaterally symmetrical high vacuum generation pump by an impeller. , A double-blade sand pump with a double-blade vacuum pump in which a spiral sand pump with one side shaft extended and an impeller attached is combined with a high-vacuum generation pump casing, and a receiver tank for sucking and storing sludge, Connect the exhaust port at the bottom of the receiver tank and the intake port of the sand pump, the intake ports of the vacuum pumps on both sides and the upper part of the receiver tank by piping, and further exhaust the exhaust from the exhaust ports of both high vacuum generation pumps. A vacuum pump unit consisting of a cooling tower that introduces and discharges via a pipe and separates water and water by a counterflow of air by a cooling fan motor and performs cooling. 3. A sand pump with a double-blade type vacuum pump and a cooling tower are installed on a make-up water tank in the form of a hollow flat base plate, and a suction port at a local part of a high vacuum generating pump and an inside of the make-up water tank are sucked. The cooling tower, which is connected by pipes and is connected to the exhaust ports of the high vacuum generation pumps on both sides via pipes and inlet pipe ports, diffuses the exhaust gas by ejecting it to the umbrella-type diffusion plate in the tower to collide and diffuse it. The vacuum pump unit according to claim 2, wherein water is cooled by a counterflow of air sucked by the rotation of the fan motor, and water is dropped from between the heat exchange fillers into the makeup water tank for circulating use.