KR20160064314A

KR20160064314A - Gate pump apparatus

Info

Publication number: KR20160064314A
Application number: KR1020140167373A
Authority: KR
Inventors: 황현진
Original assignee: (주)금강이엔지
Priority date: 2014-11-27
Filing date: 2014-11-27
Publication date: 2016-06-08

Abstract

The present invention provides a gate pump device capable of minimizing fluid resistance by expanding an inflow flow path of discharged water, minimizing a loss by facilitating the flow of a stream line, and improving pump efficiency by improving a flow rate of pumping. The gate pump device includes: a pump casing including a pump inlet which the water to be drained flows inside through, wherein the pump inlet is installed in a through hole formed on a sluice; an impeller installed on the outer circumference of an impeller casing in the pump casing to freely rotate to discharge the inner water to the outside when the sluice is closed; a motor rotating the impeller; and multiple rear guide blades radially arranged, wherein one end is fixed to the inner surface of the pump casing on the pump inlet which is spaced forward from the impeller casing, and the other end has a free end to form a space at the center and is extended towards the center of a pump shaft.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

The present invention relates to a gate pump apparatus, particularly a gate pump apparatus having a horizontal axis, capable of preventing foreign water from entering and discharging domestic water to the outside.

In order to prevent the infiltration of foreign water and to discharge the domestic water to the outside water, the water gate (gate) is installed in the river or the reservoir. At this time, An underwater pump is installed. However, a submersible pump that is disposed directly on a water gate or the like and installed in a waterway has been proposed in various ways as represented by, for example, a gate pump. This submersible pump generally comprises a pump inlet casing, an impeller, a motor, a pre-guiding or post-guiding wing, a discharge casing, a flap valve, .

Pumps are generally arranged vertically or horizontally, and for either type of pumping and drainage pump, it is inevitable to suck the foreign material into the pump. When this foreign matter, that is, the trash flow, is sucked into the pump, it adheres to the impeller, the hub, and the like, which hinders pump operation.

There is no problem if the trash is sucked into the pump and passed along with the water. However, when the impeller or the hub of the pump does not always adhere to the impeller or the hub, or when the impeller and the casing or the liner are caught in the gap, the safety device such as the overload prevention device operates by increasing the rotational power, This is a problem if it happens frequently.

In order to prevent these problems, conventionally, dust removal equipment is installed in the upstream water channel of the pump to prevent the flow of the waste so as to prevent foreign substances from being sucked into the pump as much as possible. It is also known on the pump side that a retracting blade is used to increase the clearance between the liner and the liner in order to improve the penetration of the waste into the pump. In addition, many water gates are installed in waterways such as rivers for purposes such as flood control. There are drain holes in this gate, and many gate are equipped with an underwater pump. A submersible pump is placed directly at the gate, which is to forcibly drain the running water of the channel when the gate is closed. There are many types of submersible pumps, and the pump, which is usually installed on the gate, is called a gate pump.

These submersible pumps are mainly of the type that is different depending on the direction in which the pump rotation shaft is installed, and there are those of the horizontal axis type and the vertical axis type. In addition, in order to improve the suction performance of the submersible pump, it is necessary to install the suction port as close as possible to the bed (or bottom of the water channel). When the water level of the underwater pump is lowered due to the water channel side, if the immersion depth required for the submersible pump is not secured, a swirl, an underwater swirling, a swirling flow, Inhalation of water becomes worse. The air intake vortex, the underwater vortex, and the swirling flow of the air swirl, the cavitation, the drop of the head are lowered, and the performance of the submersible pump, the noise, vibration, Causing mechanical problems such as wing erosion.

In the vertical axis type, since the pump inlet is opened toward the bottom, the pump device is not installed by deeply pouring the water to the bottom, and there is little fear of cavitation due to lack of water and the pump operation is stable. In recent years, most of the transverse axis gate pumps are used. In the present invention, the gate pump (axial pump, or the like) of the horizontal axis is used. Impeller pump).

The gate pump device is provided with a guide vane for guiding the vortical flow to the laminar flow in order to avoid the vortex flow of the water discharged from the impeller so that the pump efficiency is lowered, specifically, a so-called front or rear guide vane is radially installed before and after the impeller .

An example of installing the front guide vane (the side where the water is discharged from the impeller is referred to as "transposition") is an axial flow pump disclosed in Korean Patent Publication No. 1994-0021940. The guide wing is a hydraulic drive type gate pump disclosed in Korean Patent No. 10-0691508, and a system in which both a front and a rear guide wing are applied is disclosed in Korean Patent Publication No. 1995-0005003, .

However, in the case of the above-mentioned front guide vane, the flow of the swirling flow passing through the impeller flows in the direction opposite to the rotation of the impeller, so that the efficiency deterioration can not be avoided. Recently, The flow through the impeller is made to flow in the same direction so that the water flowing through the impeller can flow stably and the pump efficiency can be improved.

However, as can be seen in Korean Patent Publication No. 10-0691508 and Korean Patent Publication No. 1995-0005003 which apply a posterior guide wing, the posterior guide vanes 5 formed of a plurality of radial vanes of FIG. 1, And the inner end portion is fixed to the outer periphery of the impeller mounting casing 7 made of a streamlined body such as a cockpit of an aircraft so that the posture guiding vanes 5 and the casing 7 are fixed to the outer periphery of the impeller mounting casing 7, Sectional area of the flow path is reduced by the cross-sectional area of the impeller mounting surface, the resistance of the fluid is increased, the flow of the stream is not smooth, and the pumping efficiency is decreased due to the decrease of the flow rate. (7) It is a side effect that is accompanied by stereotypes of designing to be fixed on the outer periphery. And a.

Korean Patent No. 10-0691508 Korea Notice No. 1995-0005003 Japanese government office No. 56-5883 Japanese Patent Laid-Open No. 52-136401 Korean Patent No. 10-0807944 Korea Publication No. 1994-0021940

Accordingly, the present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a pumping system that minimizes fluid resistance by minimizing fluid flow by expanding the inflow channel of water to be drained, The present invention provides a gate pump apparatus capable of improving the performance of a gate pump.

According to an aspect of the present invention, there is provided a pump casing including a pump casing having a pump inlet for introducing water for drainage into a through hole formed in a water gate, And a motor for rotationally driving the impeller, characterized in that the pump pump has a pump inlet at a position spaced forward from the front end hub cap of the impeller casing, And a plurality of posture guide vanes having one end fixed and the other end extending toward the center of the pump shaft and having a free end for forming a space at the center thereof are radially arranged.

In the present invention as described above, in the conventional posture guide vane, one end is fixed to the inner surface of the pump casing, and the other end is extended radially toward the center of the pump shaft to be supported on the outer circumferential surface of the impeller casing. One end of the pump casing is fixed to the inner surface of the pump casing at a position spaced forward from the impeller casing, and the other end of the pump casing is radially arranged so as to have a free end extending toward the pump shaft center, By providing a plurality of pipes, a space is formed at the center and the inflow channel is expanded, so that the flow of the wired line is smooth and the loss can be minimized, thereby improving the pump drainage efficiency.

Figure 1 is a prior art.
FIG. 2 is a view showing a water channel in which a gate pump device according to the present invention is installed at a gate.
3 is a cross-sectional view showing a gate pump apparatus according to the present invention.
4 is a side view (front view) of the casing of the gate pump apparatus according to the present invention.

In the following detailed description, reference is made to the accompanying drawings which show, by way of illustration, specific embodiments in which the invention may be practiced.

These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are not necessarily mutually exclusive, even if different. By way of example, certain aspects, structures, or features described herein in connection with one embodiment may be practiced by other embodiments without departing from the spirit and scope of the invention.

It is also to be understood that the position or arrangement of individual elements within each disclosed embodiment may be modified without departing from the spirit and scope of the invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the invention is defined only by the appended claims appropriately interpreted and by the full range of equivalents to which such claims pertain. In the drawings, like reference numerals refer to the same or similar functions in the various figures.

3 is a cross-sectional view of a gate pump apparatus according to the present invention, and Fig. 4 is a cross-sectional view of a casing of a gate pump apparatus according to the present invention. Fig. As seen from the side (front side), the term "posterior" in the present invention refers to the forward position of the impeller side into which water is introduced.

2, a conventional automatic vibration damper 61 is provided in front of the channel 60 to filter off the vibration of the water. The automatic vibration damper 61 is provided at the rear of the vibration damper 61 with a water passage 60, And a gate pump device 65 is provided in the water gate 64. The gate pump device 65 is provided in the water gate 64,

The water gate 64 rises by the water gate lifter 66 provided on the upper side of the hydrological structure 62 to open the drain port 63 to allow the domestic water 67 to be sent to the outside water 68 in a large amount, The water gate 64 is lowered by the operation of the lifting device 66 to block the drainage port 63 to block the domestic water 67 and to operate the gate pump device 65 when necessary so that the internal water 67 is supplied to the outside water 68 To be transported.

As shown in Fig. 4, the gate pump device 65 has a structure in which a pump 69 on the left side and a flap valve 70 on the right side, which are provided in the drain port of the water gate, are coupled with each other with a fastening flange 71 interposed therebetween The pump 69 includes a pump casing 73 having an inlet 72 at the front end thereof, an impeller (propeller) 74 provided inside the casing 73, and a motor assembly 74 for rotationally driving the impeller 74 Side flange 76 is formed at the rear end of the casing 73 and a valve-side flange 78 is also formed at the valve body 77 of the flap valve 70, And the flanges 76 and 78 are fastened to both sides of the flange 71 by fastening bolts 79.

The fastening flange 71 is a rectangular or circular plate member having a circular hole at the center and larger than the flanges 76 and 78 at both sides. The fastening flange 71 is provided on the water gate 64, And a hooking member 81 having a hooking hole 80 is formed at the upper end of the front face of the fastening flange 71 so as to protrude therefrom.

The ring member 81 formed on the fastening flange 71 is installed on the ceiling of the hydrological structure 62 at a previous time as shown in FIG. 2 when the gate pump apparatus 65 needs to be lifted for the purpose of trouble or inspection 3) hooked to the lower end of the pulling wire rope in the hoist 82 device is engaged with the hooking hole 80 of the ring member 81 to connect the gate pump device 65, The fastening bolt 83 fastening the fastening flange 71 to the hoistway 64 wall is fastened to the hoist 82 by the pulling wire rope through the hoop member 81. Therefore, There is no fear that the heavy gate pump device 65 will fall down even if it is disassembled and loosened, so that a separate supporting structure or manpower is not necessary to prevent the gate pump device 65 from falling down, and all of the fixing bolts 83 are released When the gate pump device 65 The hoist 82 is wound around the pulling wire rope and lifts the gate pump device 65 to the upper side of the water surface to perform inspection and maintenance work on the ground. The presence of the ring member 81 makes it easy and easy to carry and assemble the gate pump device 65, and in particular, greatly enhances convenience in maintenance work.

4 is a view of the casing of the gate pump apparatus according to the present invention viewed from a front position in which water is introduced. The inlet port 72 of the pump casing 73, more precisely, the front end of the impeller casing 84, And a posture guide vane 85 is formed on the side of the inlet port 72. The posture guide vane 85 constitutes a substantial part of the present invention. So that the outer end thereof is fixed to the inner circumferential surface 86 of the pump casing 73 and the inner end thereof is extended toward the center of the pump so as to have the space 87 which displays the region by the alternate long and short dash line in Fig. And thus the free end 85A is extended and thus the free end 85A is not supported or interfered with by any member by the space 87 forming the inflow path.

In the present invention as described above, a guide collar, that is, a posterior guide vane 85 is radially formed in the pump casing 73 of the gate pump device (axial flow pump) installed in the hydrological gate and is not fixed to the impeller casing 84, The cross sectional area of the inflow path is expanded by the space 87 formed at a distance spaced forward from the hub cap 84a which is the front end of the impeller 74 and the flow of the swirling flow is the same The fluid can flow smoothly and smoothly along the guide of the streamlined surface of the hub cap 84a at the front end of the impeller casing 84 while flowing through the space 87 secured by the inflow channel The water that has passed through the impeller 74 and forms a stable laminar flow opens the flap valve 70 located at the rear of the water gate, It will be forced to discharge.

The above-described embodiments are merely illustrative of the technical structure of the present invention, and are not intended to limit the scope of the present invention. Although the present invention has been described in detail with reference to exemplary embodiments thereof, it is to be understood that such detailing embodiments of the invention may be modified by those skilled in the art and that part of the technical features may be modified without departing from the spirit of the invention, And such subject matter should be included within the scope of the technical method of the invention claimed below.

60: Waterway (lagoons) 61: Automatic dust collector
62: Hydraulic structure 63: Drain
64: Water gate 65: Gate pump device
66: Hydrological relief 67: Domestic water (side)
68: Outer water (side) 69: Pump
70: flap valve 71: fastening flange
72: inlet 73: casing
74: impeller 75: motor assembly
76: pump side flange 77: valve body
78: Valve side flange 79: Bolt
80: filtering hole 81: fastening means for lifting (ring member)
82: Hoist 83: Fixing bolt
84: impeller casing 84a: hub cap
85: post guide guide vane 85A: free end of post guide guide vane
86: inner diameter surface 87: space (inflow channel)

Claims

An impeller installed on the outer circumferential surface of the impeller casing so as to be rotatable to discharge the water to the outside during closing of the water inlet; And a motor for rotationally driving the impeller, wherein one end of the pump casing is fixed to the inner surface of the pump casing at a position spaced forward from the front end hub cap of the impeller casing, And a plurality of posture guide vanes extending in a radial direction and having a free end for forming a space in the center thereof are provided in a radial array.