KR101234310B1 - Suction auxiliary apparatus for drainage pump and drainage pumping apparatus using the same - Google Patents

Abstract

The present invention relates to a suction auxiliary device for a drain pump and a drain pump device for a pumping station using the same. It relates to a suction auxiliary device for drainage pump that can effectively suppress the formation of deposits and a pumping station pumping device using the same.
The suction auxiliary device for the drainage pump of the present invention is located at the suction port side of the discharge pipe in which the drainage pump for discharging the water introduced into the sump is mounted therein, and interferes with the flow of the fluid generated by the suction force of the drainage pump. And a guide part for generating vibration, and an elastic support part for supporting the guide part so as to be spaced apart from the bottom of the sump tank and elastically supporting the guide part to allow the sediment of the bottom of the sump to flow by the vibration of the guide part.

Description

Suction auxiliary apparatus for drainage pump and drainage pumping apparatus using the same}

The present invention relates to a suction assisting device for a drainage pump and a drainage pumping device for a pumping station using the same, and more particularly, is installed at the inlet side of the drainage pump to generate vibration by the flow of fluid generated around the inlet and at the bottom of the sump. It relates to a suction auxiliary device for drainage pump that can effectively suppress the formation of deposits and a pumping station pumping device using the same.

In general, underground pumps, joint holes, underground walkways, drainage pumping stations, etc. are installed to be able to quickly drain the groundwater or rainwater inflow rain.

These drainage pumping stations are concrete structures that are laid underground, such as underground roads, and are installed to prevent flooding due to the inflow of groundwater or the rainwater during rainy weather depending on the underground water pressure around the underground structures and the degree of waterproofing of civil engineering structures. .

In general, the forced drainage method of the drainage pumping station is provided with a vibration suppressor installed on an inflow path into which water is introduced, and a drainage tank is installed at the rear of the vibration suppressor and a drainage pump pumping water stored in the sump to the drainage channel.

The drain pump is installed inside the column pipe which is fixed through the upper wall of the sump. The inlet of the column pipe is installed near the bottom of the sump. The drain pump is installed at the inlet side of the column pipe.

The conventional drainage pump is provided with a hermetically sealed motor at an upper portion thereof, and a rotating shaft extends downward from the center side of the motor. In addition, a pump casing fixed to the inlet of the column pipe and supporting the motor is provided below the motor.

The drain pump configured as described above is forced to flow the fluid while the impeller is rotated by the rotational force of the motor to suck the fluid through the inlet of the casing and discharge through the outlet.

However, in the case of soil inflowing with rainwater in rainy weather, the soil is not removed by the dust collector but flows into the sump, and as time passes, the soil is deposited at the bottom of the sump. It is inconvenient to periodically remove the deposits in the sump because the pump cannot operate.

The present invention has been made to improve the above problems, it is possible to suppress the formation of sediment on the bottom of the sump by generating vibration by the vortex generated around the inlet of the drain pump so that the inlet of the drain pump is not blocked by the sedimentation of soil. An object of the present invention is to provide a suction auxiliary device for a drain pump and a drain pump device for a pumping station using the same.

Suction auxiliary apparatus for drainage pump of the present invention for achieving the above object is located on the suction port side of the discharge pipe is mounted inside the drainage pump for discharging water introduced into the sump, generated by the suction force of the drainage pump A guide unit which interferes with the flow of the fluid to generate vibrations; And an elastic support part that supports the guide part so as to be spaced apart from the bottom of the sump and elastically supports the guide part so as to flow the deposits of the bottom of the sump by vibrating the guide part.

The elastic support portion is provided with a plurality of supports that are spaced apart from each other in the lower portion of the guide portion, the support is a first coupling portion formed in the lower portion of the guide portion, the second coupling portion fixed to the bottom of the sump; And an elastic member disposed between the first and second coupling parts so as to connect the first and second coupling parts to induce vibration of the guide part.

The guide portion is gradually narrowed as it progresses from the bottom to the top, characterized in that it is formed to vary from circular to square.

And the drain pump device for pumping station of the present invention for achieving the above object in the pumping station pumping device for discharging the water introduced into the sump through the discharge pipe, the suction port is installed in the sump in the vertical direction the bottom of the sump A discharge pipe spaced apart from the discharge port and connected to the discharge pipe; A drain pump installed inside the discharge pipe to suck water through the suction port and discharge the water toward the discharge port; A suction auxiliary device installed at a bottom of the sump facing the suction port and preventing sediment formation by flowing sediment at the bottom of the sump by vibration generated by interference with a flow of fluid generated by the suction force of the drain pump; Characterized in having a.

The drainage pump has a motor unit for rotating the pumping impeller and a pumping housing installed below the motor unit, and the pumping housing is coupled with the discharge pipe to surround the pumping impeller and flows through the inlet of the lower part. The main flow path through which the discharged water is transferred to the discharge pipe through the discharge pipe, and a part of the water rising by the rotation of the pumping impeller is discharged into the pumping area under the drain pump to form a vortex A partial discharge sub-channel is formed in the lower portion to discharge the pumped water to a path different from the main channel of the discharge pipe to the outside, and the discharge pipe is connected in communication with the discharge pipe, and the motor unit is provided therein. The delivery unit is installed so as to surround a portion of the pumping housing that faces the sub-channel. Further provided with an auxiliary pipe portion extending downward from the lower portion of the pipe, the auxiliary pipe portion is installed to be spaced apart from the bottom surface of the water collection tank, the outer circumferential surface partitioned from the main flow path to the outside of the water discharged through the sub-channel The vortex forming hole is formed to be discharged to the motor unit, and the motor unit is coupled to the motor body in which the stator and the rotor are installed inside the motor frame opened up and down, and closes the upper portion of the motor frame. An upper housing rotatably supporting the shaft coupled to the upper housing; a lower housing coupled to close the lower portion of the motor frame; and a lower bearing supporting the shaft; and a lower portion of the lower housing. Cooling filled with coolant, formed by enclosing the frame to have a main cooling space Burr and the cooling chamber is installed so as to extend upwardly toward the motor frame so that the cooling oil filled in the cooling chamber rises along the outer wall of the motor frame and forms a circulation flow path that descends to the inner wall of the cooling chamber. And a cooling impeller coupled to the formed coolant circulation partition wall and the shaft on the cooling chamber to rotate the coolant along the coolant circulation partition wall by rotation.

As described above, according to the present invention, the suction assisting device is installed at the bottom of the sump to induce the flow of the fluid to the bottom of the sump and at the same time vibrate the fluid to effectively prevent the sediment on the bottom of the sump.

1 is a cross-sectional view showing a drain pump station to which a drain pump device according to an embodiment of the present invention is applied;
2 is a cross-sectional view of the main portion of Figure 1,
3 is a perspective view showing a suction aid applied to FIG.
Figure 4 is a perspective view showing a suction assistant according to another embodiment of the present invention,
5 and 6 are cross-sectional views respectively extracting the main parts of the drain pump device according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail for a pump station drain pump device according to an embodiment of the present invention.

1 to 3, the pump station 100 includes a vibration suppressor 110, a collection tank 120, and a drain pump device 200.

The pumping station 100 is pumped by the drainage pump device 200 through the inflow path 102 and the water collected in the water collecting tank 120 via the vibration suppressor 110 to the drainage path 130 through the discharge pipe 125. It is equipped with a structure for discharge. Reference numeral 105 denotes a hydro drain for natural drainage.

The vibration damper 110 is a water collecting tank 120 and an inflow path 102 so that foreign matters contained in the water introduced through the inflow path 102 can be removed by a rake that rotates the foreign matter larger than the screen size of the screen in an endless track. Installed in between, the structure of the vibration damper 110 is known, and detailed description thereof will be omitted.

The water collecting tank 120 is formed to store water introduced through the vibration suppressor 110, and a drain pump device 200 is installed to be spaced apart from the bottom surface 122. The drain pump device 200 discharges water introduced into the sump tank 120 to the drainage path 130 through the discharge pipe 125 located above the sump tank 120.

The drain pump device 200 of the present invention includes a discharge pipe 210, a drain pump 220, and a suction assist device 20.

The discharge pipe 210 is vertically installed in the water collecting tank 120 in the vertical direction. The discharge pipe 210 is provided with a suction port 215 at a lower portion thereof, and a discharge hole (not shown) connected to the discharge pipe 125 at the upper portion thereof. The discharge pipe 210 is installed such that the suction port 215 is spaced apart from the bottom 122 of the water collecting tank 120 by a predetermined distance. The delivery pipe 210 is formed in a tubular shape of a hollow tube, and the lower portion of the drain pump 220 is built.

The drain pump 220 is installed inside the discharge pipe 210 to suck water through the suction port 215 to discharge water toward the discharge pipe 125. The drain pump 220 includes a motor unit 230 and a pumping housing 10.

The motor unit 230 rotates the pumping impeller 271 by the rotation of the motor. The motor unit 230 includes a motor body 240, an upper housing 251, a lower housing 252, a cooling chamber 260, a cooling impeller 263, and a cooling oil circulation partition 265.

The motor main body 240 is a hollow cylinder, and the stator 243 and the rotor 245 are installed inside the motor frame 241 that is opened up and down. Reference numeral 247 denotes a power supply line for supplying power to the stator 243. In the center of the rotor 245, a shaft 249 extending downward into the pumping housing 280 to be described later is integrally coupled to the rotor 245.

The upper housing 251 closes the upper part of the motor frame 241, and is formed to have an outer diameter greater than that of the motor frame 241, and is coupled to an upper end of the cooling chamber 260 to be described later. An upper bearing 253 is rotatably supported at the center bottom of the upper housing 251 to rotatably support the shaft 249 coupled with the rotor 245 of the motor body 240. Reference numeral 255 denotes a sealing ring installed between the upper end of the motor frame 241 and the upper housing 251.

The lower housing 252 is coupled to the lower portion of the motor frame 241 to close the lower portion of the motor frame 241. The lower bearing 257 which supports the shaft 249 is installed in the center upper part of the lower housing 252.

The cooling chamber 260 extends in a direction in which the inner diameter extends about the shaft 249 so as to be spaced apart from the lower portion of the lower housing 252 at the lower portion of the lower housing 252, and extends upward to be coupled to the upper housing 251. The motor frame 241 is coupled to surround the outer surface of the motor frame 241 so as to have a main cooling space 264. Reference numerals 268 and 269 are sealing members that can prevent leakage of cooling oil through a portion of the shaft 249 that rotates at high speed, and are fixed to the shaft 249 to rotate together with the shaft 249, and A mechanical seal may be applied to fit the joints of the fixing ring portions to be mated to prevent leakage.

Cooling oil, for example, oil is filled in the main cooling space 264 of the cooling chamber 260. The cooling impeller 263 is coupled to the shaft 249 in the main cooling space 264 formed by the cooling chamber 260 and forms a rising vortex in conjunction with the rotation of the shaft 249 to circulate the cooling oil. It is circulated along the partition 265.

The cooling oil circulation partition 265 is installed upward in the cooling chamber 260 in parallel with the outer surface of the motor frame 241 so that the cooling oil filled in the main cooling space 264 of the cooling chamber 260 is rotated. After rising along the outer wall of 241 is provided to form a circulating flow path that descends to the inner wall of the cooling chamber 260. A through hole 266 is formed at a lower end of the cooling oil circulation partition 265 so that the cooling oil descending on the inner wall of the cooling chamber 260 can be moved toward the cooling impeller 263.

In this cooling structure, the cooling oil is circulated by descending after passing through the outer surface and the upper frame 251 of the motor frame 241, thereby improving cooling capacity, and thus operating the motor main body 240 in a malfunction or inadvertent state even when water is not introduced. It provides the advantage of preventing overheating.

The pumping impeller 271 is coupled to the shaft 249 extending downward from the lower portion of the cooling chamber 260 to pump water introduced through the pumping housing 10 by the rotation of the shaft 249.

Pumping impeller 271 is a cooling chamber 26 by rotating the water introduced in conjunction with the rotation of the pumping impeller 271 on the upper surface of the pumping wing 272 to enable the cooling function of the cooling chamber 260 in addition to the pumping function An auxiliary cooling vane 274 protruding upward is formed to cool the bottom of the bottom.

The pumping housing 10 is installed to be coupled to the lower portion of the cooling chamber 260 of the motor unit 220 to surround the pumping impeller 271 and to be inserted into the delivery pipe 210. The lower end of the pumping housing 10 is seated on a fixing jaw 211 formed at the lower end of the delivery pipe 210. And the upper end of the pumping housing 10 is coupled to the lower portion of the cooling chamber 260 by a plurality of supports (282).

The flow path 11 through which water flows is formed in the pumping housing 10. The pumping impeller 271 is disposed at the center of the flow path 11. Water introduced through the inlet 215 of the delivery pipe 210 moves along the flow path 11 and is discharged to the discharge pipe 125. The guide piece 15 is formed inside the pumping housing 10 to guide the flow of water by the pumping impeller 271.

Suction aid 20 is installed on the bottom 122 of the sump tank to be located below the discharge pipe (210). That is, the suction assisting device 20 is installed at a position facing the suction port 215 of the delivery pipe 210. The suction assisting device 20 suppresses the formation of deposits such as mud, earth and sand by flowing the deposits of the bottom of the sump tank 122 by the vibration generated by the vortex.

The suction assisting device 20 is provided with a guide part 21 and an elastic support part.

The guide portion 21 is positioned to be adjacent to the lower side of the suction port 215. The upper portion of the guide portion 21 may be inserted into the delivery pipe 210 or spaced apart from the delivery pipe 210 to be adjacent to the suction port 215.

The guide channel 25 is formed inside the guide part 21 to guide the flow of the fluid to the suction port 215. The guide portion 21 has a shape that gradually narrows as it progresses from the bottom to the top. Preferably, the guide portion 21 is formed to vary from circular to square as it progresses from the bottom to the top. That is, the lower part of the guide part 21 is circular, and the upper part is formed in a rectangle. At this time, the left and right lengths of the rectangle are larger than the diameter of the suction port 215. And the front and rear width of the rectangle is formed smaller than the diameter of the inlet 215. Due to the configuration of the guide part 21, the water is partially sucked from the outside of the guide part 21 when the drain pump 220 is operated, and at the same time, a part of the discharge pipe 210 is provided along the guide channel 25 of the guide part. Is inhaled.

Unlike shown, the guide unit may have a structure as shown in FIG. 4. That is, the guide part 51 of the suction assisting device 50 has a shape that gradually narrows as it progresses from the bottom to the top. The lower part and the upper part of the guide part 51 are formed in a circular shape, and the cross-sectional area of the lower part is formed larger than the cross-sectional area of the upper part.

Referring back to Figures 1 to 3, the elastic support is formed in the lower portion of the guide portion 21. The elastic support part supports the guide part 21 to be spaced apart from the bottom 122 of the sump. The elastic support part induces vibration of the guide part 21 to flow the deposits of the bottom of the sump tank 122.

In the illustrated example, the elastic support is provided with a plurality of supports 34 are spaced apart from each other. A distribution hole 35 is formed between each support 34. The lower portion of the distribution hole 35 is formed to contact the bottom 122 of the sump.

Each support 34 has a first coupling portion 30 coupled to the lower portion of the guide portion 21, a second coupling portion 33 fixed to the bottom 122 of the sump, and the first and second couplings. It is made of an elastic member 31 disposed between the first and second coupling parts to connect the parts. The second coupling portion 33 is formed with a through hole into which the anchor bolt installed in the bottom of the sump tank 122 is inserted.

The elastic member 31 induces vibration of the guide part 21 by the flow of the fluid. The spring may be applied to the elastic member 31. The upper end of the elastic member 31 is fixed to the first coupling portion 30, the lower end is fixed to the second coupling portion (33).

The suction assisting device 20 having the above-described configuration prevents deposits from accumulating on the bottom 122 of the sump when the drain pump 220 is operated. That is, when the drain pump 220 is operated, the water around the suction port 215 of the discharge pipe is sucked into the discharge pipe 210 by the suction force of the pumping impeller 271. On both sides of the guide portion 21, the fluid is sucked into the inlet 215 while forming a swirl flow, and the generated fluid flows into the inlet 215 through the inside of the guide 21. While vibrating, the guide unit 21 is vibrated. The guide part 21 supported by the elastic support part easily generates vibration by the flow of the fluid, and the vibration of the guide part 21 causes the deposits around the guide part 21 to flow and the suction port 215 together with the water. To be inhaled.

In addition, since water flows into the suction assisting device 20 through the distribution hole 35, the flow of the fluid comes into contact with the bottom 122 of the water collecting tank. Therefore, the deposit of the bottom 122 of the sump is more easily sucked into the delivery pipe 210.

Another embodiment of the present invention is illustrated in FIG. 5. Since the configuration of the suction assisting device 20 in the drain pump device of FIG. 3 is the same as that of the embodiment of FIG. 1, a detailed description thereof will be omitted, and the delivery pipe 210 and the drain pump 220 will be described.

Referring to Figure 3, the discharge pipe 210 is formed in communication with the inner space on the outer circumferential surface on which the drain pump 220 is mounted to guide a portion of the water introduced through the suction port 215 toward the bottom 122 of the sump tank The vortex forming hole 216 is provided. Vortex forming holes 216 are formed radially along the outer circumferential surface of the discharge pipe 210, the inner side is high and the outer side is inclined low so that the water introduced is discharged below the discharge pipe 210.

In addition, the drain pump 220 installed in the delivery pipe 210 includes a motor unit 230 and a pumping housing 280. The motor unit 230 is the same as the embodiment of FIG. 1.

The illustrated pumping housing 280 is installed to be coupled to the lower portion of the cooling chamber 260 of the motor unit 230 to surround the pumping impeller 271 is inserted into the delivery pipe 210.

The pumping housing 280 may include a main flow path 292 for allowing the water introduced through the inlet 282 below the discharge pipe 210 to be discharged to the discharge pipe 125 through the discharge pipe 210, and a pumping impeller 271. The partial discharge sub-flow path 294 is formed such that a part of the water rising by the rotation of the discharge pipe is discharged through the vortex forming through-hole 216 formed in the discharge pipe 210.

That is, the pumping housing 280 transfers water introduced from the lower portion of the pumping impeller 271 coupled to the shaft 249 extending below the cooling chamber 260 to the main flow passage 292 and the sub flow passage 294. It is coupled to the lower portion of the cooling chamber 260 to supply dividedly.

The pumping housing 280 may be divided into a main part 284 and a sub part 286.

The main part 284 has an inner diameter that extends from the cooling chamber 260 to be lowered so as to transfer the water rising by the rotation of the pumping impeller 271 between the cooling chamber 260 and the inner wall of the discharge pipe 210, but downwards. As it proceeds, the inner diameter gradually extends to form a main passage 292, and is coupled through the cooling chamber 260 and the plurality of coupling bars 282 so as not to close the main passage 292.

In addition, the upper edge portion of the main portion 284 is formed in a rib shape in close contact with the inner wall of the delivery pipe 210, and is sealed with the inner wall of the delivery pipe 210 by a packing member.

The sub portion 286 extends downwardly in combination with the main portion 284 so as to form a sub flow passage 294 communicating with the inner wall of the delivery pipe 210 between the end of the main portion 284. .

Reference numeral 288 denotes a coupling bar that couples the sub portion 286 and the main portion 284.

The lower end of the sub portion 286 is formed with a rib in close contact with the inner wall of the delivery pipe (210).

In the example shown, the upper end of the sub-part 286 has a larger inner diameter than the lower end of the main part 284, so that the gap between the upper end of the sub-part 286 and the lower end of the main part 284 is sub-flow path 294. To form. The sub channel 294 may be formed in the form of a plurality of through holes spaced apart from each other.

In contrast, as shown in FIG. 6, the upper end of the sub-part 286 has a smaller inner diameter than the lower end of the main part 284, so that a gap between the upper end of the sub-part 286 and the lower end of the main part 284 is formed. Of course, it can be formed to be a sub-channel (294).

In this case, an empty space is formed in an area between the outer circumferential surface of the main portion 284 and the outer circumferential surface of the sub portion 286. ) May be formed along the wall to extend to the vortex forming hole 216 of the delivery pipe 210.

According to the drainage pump device, a part of the water rising through the inlet 282 when the pumping impeller 271 rotates, the bottom 122 of the sump (120) through the sub-flow path 294 and the vortex forming hole 216 The discharge is caused to cause vortex around the suction assistant. Thus, the flow of the deposit becomes easier.

Meanwhile, components not described above in the embodiments illustrated in FIGS. 3 to 6 are the same as the embodiments illustrated in FIGS. 1 and 2, and thus detailed descriptions thereof will be omitted.

In the above, the present invention has been described with reference to one embodiment, which is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible.

Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.

21: guide portion 25: guide channel
30: support 31: elastic member
100: pump station damper 120: water tank
200: drain pump device 220: drain pump

Claims (5)

delete delete delete delete In the drain pump device for pumping station for discharging water introduced into the sump through the discharge pipe,
A discharge pipe installed in the water collecting tank in a vertical direction and spaced apart from a bottom of the water collecting tank, and a discharge hole connected to the discharge pipe;
A drain pump installed inside the discharge pipe to suck water through the suction port and discharge the water toward the discharge port;
A suction auxiliary device installed at a bottom of the sump facing the suction port and preventing sediment formation by flowing sediment at the bottom of the sump by vibration generated by interference with a flow of fluid generated by the suction force of the drain pump; Equipped with
The drain pump includes a motor unit for driving a pumping impeller and a pumping housing installed below the motor unit.
The pumping housing is combined with the discharge pipe to enclose the pumping impeller so that water introduced through a lower inlet is transferred to the discharge pipe through the discharge pipe, and water rising by rotation of the pumping impeller. Part of the sub-discharge for discharging the pumped water from the lower part of the main flow path to a path different from the main flow path of the discharge pipe to the outside to form a vortex by discharging a portion of the discharge pump to the pumping area below the drain pump The euro is prepared,
The discharge pipe is connected in communication with the discharge pipe and the motor unit is installed therein,
And an auxiliary pipe portion extending downward from a lower portion of the discharge pipe so as to surround a portion of the pumping housing opposite to the sub flow path.
The auxiliary pipe part is installed to be spaced apart from the bottom surface of the water collection tank, the vortex forming hole is formed on the outer circumferential surface partitioned with the main flow path to discharge the water discharged through the sub-channel to the outside,
The motor unit includes a motor main body having a stator and a rotor installed inside the motor frame vertically open, and an upper bearing rotatably supporting a shaft coupled to the upper part of the motor frame and coupled to the rotor of the motor main body. An upper housing to be installed, a lower housing coupled to close the lower part of the motor frame, and a lower bearing supporting the shaft, and a lower portion of the lower housing to surround the motor frame to have a main cooling space. A cooling passage filled with a cooling oil and a cooling passage filled upwardly toward the motor frame in the cooling chamber so that the cooling oil filled in the cooling chamber rises along the outer wall of the motor frame and then descends to the inner wall of the cooling chamber. Cooling oil circulation partition formed to form a, Pumping station drain pump apparatus comprising the cooling impeller for that group is to be coupled to the shaft on a circular cooling chamber by rotation along the oil cooling the cooling oil circulation bulkhead.

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