KR102444811B1 - Submersible pump capable of handling foreign substances in the sump - Google Patents

Abstract

The present invention relates to a submersible pump located in the water of a sump to transfer a fluid in the sump to the outside. According to an embodiment of the present invention, the submersible pump capable of treating foreign substances in a sump comprises: a pump unit which suctions and discharges a fluid in a sump according to the rotation of an impeller; a pocket strainer which is installed in an inlet where the fluid of the pump unit is suctioned, is lifted up by a suction force when the fluid is suctioned to form a foreign substance pocket in which foreign substances are collected, and shakes off the foreign substances, collected in the foreign substance pocket, downward by drooping downward by its own weight when the suction force disappears; a foreign substance treatment chamber which is located in a lower portion of the inlet and into which the foreign substances dropped down by its own weight after being caught in the foreign substance pocket are introduced as the operation of the pump unit is stopped; a branch treatment pipe which connects a fluid discharge portion of the pump unit and the foreign substance treatment chamber to treat the foreign substances, collected in the foreign substance treatment chamber, by the discharged fluid; a foreign substance treatment pipe which discharges the foreign substances, collected in the foreign substance treatment chamber, from the foreign substance treatment chamber together with the fluid introduced through the branch treatment pipe; and a foreign substance accommodating unit for filtering and accommodating the foreign substances included in the fluid discharged through the foreign substance treatment pipe after floating in the sump, to collect and easily treat the foreign substances discharged to the foreign substance treatment pipe in the sump.

Description

Submersible pump capable of handling foreign substances in the sump

The present invention relates to a submersible pump for transferring a fluid of a water collecting tank to the outside by being located in the water of a water collecting tank.

In general, a submersible pump is located in the water of a water collecting tank, sucks the fluid in the water collecting tank, and discharges the sucked fluid to the outside of the water collecting tank through a discharge pipe and transfers it.

In particular, foreign substances are mixed and introduced into water collecting tanks such as storm water tanks, waste water tanks, sewage tanks, and drainage tanks. There was a problem in that the drive motor was burned out or the pump casing was damaged due to sudden stop.

Accordingly, by installing a strainer at the suction port of the pump casing to filter out foreign substances contained in the fluid flowing into the suction port and sucking only the fluid, it was possible to prevent malfunction of the submersible pump.

However, when the accumulation of foreign matter in the strainer is accumulated, the fluid cannot be sucked, and as the load of the submersible pump is increased, there is a problem in that the drive motor is damaged and the efficiency of the submersible pump is reduced.

In order to solve this problem, in the prior art, "a submersible pump with an automatic foreign matter removal function" of Korean Patent Publication No. 10-1325716 (notice on November 8, 2013) has been disclosed.

The conventional submersible pump with an automatic foreign matter removal function penetrates up and down to form an internal flow path, a pump is installed in the internal flow path, a column pipe having an outlet on one side of the upper end, and a column pipe at the bottom of the column pipe A plurality of through holes are formed to surround and open to the outer surface of the column pipe and extend downward from the column pipe to extend a predetermined distance and are installed, and a lifting mechanism for lifting and lowering the strainer along the column pipe.

The conventional submersible pump equipped with an automatic foreign matter removal function of this configuration was able to solve the problem caused by clogging of the strainer by lifting and lowering the strainer by the lifting mechanism, and cleaning it in the form of dropping the foreign matter accumulated on the strainer.

However, in the conventional submersible pump with an automatic foreign matter removal function, the foreign matter removed from the strainer flows back into the water collecting tank, and the foreign material in the water collecting tank cannot be treated.

In addition, by configuring the strainer to remove foreign substances from the strainer by moving up and down by the lifting mechanism, there was a problem in that the structure is complicated and the manufacturing cost is increased.

The present invention has been devised to solve the above problems, and the problem to be solved by the present invention is to install a pocket strainer at the suction port, and the shape is deformed convexly upward by the suction force to form a pocket space in which foreign substances are filtered, When the suction power is extinguished, the shape is deformed convexly downward by its own weight to discharge the foreign substances in the pocket space, so that the foreign substances accumulated in the pocket strainer can be easily removed as well as the foreign substances in the water collecting tank that can reduce the manufacturing cost. It aims to provide a possible submersible pump.

In addition, in the state that the foreign material of the pocket strainer is confined in the foreign material treatment chamber, it is transferred to the foreign material receiving unit that is floated on the water surface of the water collecting tank by the fluid discharged from the pump unit and locked, thereby preventing the failure of the pump unit due to foreign substances and preventing foreign substances from being damaged. An object of the present invention is to provide a submersible pump capable of treating foreign substances in a water collecting tank, which can prevent a failure of the pump unit and prevent a decrease in pump efficiency.

In addition, according to the shape deformation of the pocket strainer, the inlet opening and closing member is configured to operate by the interlocking member, thereby simplifying the structure according to the operation and reducing the manufacturing cost. .

The submersible pump capable of handling foreign substances in the water collection tank according to an embodiment of the present invention for achieving the above object is a pump unit that sucks and discharges the fluid of the water collection tank according to the rotation of the impeller, and is installed at the suction port through which the fluid of the pump unit is sucked. When the fluid is sucked in, it rises up by the suction force to form a foreign material pocket where foreign substances are collected, and when the suction power is extinguished, it sags downward by its own weight. As the start of the pump unit is stopped, the foreign material caught in the foreign material pocket is introduced into the foreign material processing chamber into which the foreign material falls to the lower part due to its own weight, and the foreign material collected in the foreign material treatment chamber is treated by the discharged fluid. A branch treatment pipe connecting the discharged portion and the foreign material treatment chamber, a foreign material treatment pipe for discharging foreign substances collected in the foreign material treatment chamber from the foreign material treatment chamber together with the fluid flowing in through the branch treatment tube, and in the water collection tank and a foreign material accommodating part which filters and accommodates foreign substances contained in the fluid discharged through the foreign material treatment pipe and floated in the water collecting tank to collect and easily process the foreign substances discharged through the foreign material treatment pipe.

The foreign material treatment chamber includes a foreign material inlet hole through which a foreign material is introduced into a position corresponding to the pocket strainer, a treatment inlet hole formed on one side of the foreign material treatment chamber to introduce a fluid through the branch treatment pipe, and the foreign material treatment It may include a treatment discharge hole formed on the other side of the chamber to discharge the foreign material by the fluid flowing into the interior of the foreign material treatment chamber through the foreign material treatment tube.

The foreign material treatment chamber may include an inlet opening/closing member installed in the foreign material inlet hole to selectively open and close the foreign material inlet hole to prevent the fluid discharged to the branch treatment pipe from being discharged through the foreign material inlet hole.

An interlocking member connecting the pocket strainer and the inlet opening and closing member so that the inlet opening and closing member interlocks to open and close the foreign material inlet hole when the pocket strainer is moved upward by the suction force of the pump unit or is struck downward can

According to the present invention, since the foreign material introduced into the foreign material treatment chamber is transferred to the foreign material receiving unit by the fluid discharged from the pump through the branch treatment pipe and the foreign material treatment pipe and processed, the foreign material in the water collecting tank is easily removed and the foreign material is pumped by the foreign material. It is possible to prevent the failure of the pump from occurring or the pump efficiency from being lowered.

In addition, the pocket strainer forms a pocket space in which foreign substances are accumulated in a convex state by the suction force of the fluid, and when the suction force is dissipated, the shape is deformed convexly to the bottom by its own weight, and the foreign substances accumulated in the pocket space are easily discharged. , it is possible to easily remove foreign substances accumulated in the pocket strainer, and to reduce the manufacturing cost.

In addition, when the shape of the pocket strainer is deformed by the suction force, since the inlet opening/closing member operates in conjunction with the interlocking member, it is possible to reduce the manufacturing cost by simplifying the operation structure.

1 is a schematic side cross-sectional view showing a submersible pump capable of treating foreign substances in a water collecting tank according to an embodiment of the present invention.
2 is a schematic side cross-sectional view showing a submersible pump capable of treating foreign substances in a water collecting tank according to an embodiment of the present invention, and shows a state in which a water collecting type fluid is transferred to the pump unit through a discharge pipe.
3 is a schematic side cross-sectional view showing a submersible pump capable of treating foreign substances in a water collecting tank according to an embodiment of the present invention, and shows a state in which foreign substances are transferred through a branch treatment pipe and a foreign substance treatment pipe.
4 is a schematic side cross-sectional view showing a submersible pump capable of treating foreign substances in a water collecting tank according to an embodiment of the present invention, and shows an operating state of the pocket strainer when the pump unit is not started.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 to 2 , the submersible pump 100 capable of treating foreign substances in the water collecting tank according to the embodiment of the present invention may include a pump unit 110 .

The pump unit 110 may provide a suction power for sucking the fluid and a discharge power for discharging the sucked fluid.

The pump unit 110 may include a driving motor 111 , an impeller 113 , and a pump casing 115 .

The driving motor 111 may be implemented as an electric motor rotating the driving shaft by electricity, and the impeller 113 may be coupled to the driving shaft to suck the fluid according to the rotation of the driving shaft and discharge the sucked fluid.

The driving motor 111 may be airtight wrapped in a motor casing to enable operation even in the water of the water collecting tank.

The impeller 113 may be configured in a form in which a plurality of vanes are formed in plurality along the circumferential direction around the driving shaft, or in a form in which one vane gradually increases in radius from the driving shaft to the circumference in the circumferential direction.

The impeller 113 may suck the fluid into the center to which the drive shaft is coupled, and discharge the sucked fluid to the periphery.

An impeller 113 is installed inside the pump casing 115 to guide the movement of the fluid introduced and discharged by the impeller 113 .

At a lower portion of the pump casing 115 , a suction port 116 through which the fluid is sucked is formed at a position corresponding to the portion where the fluid of the impeller 113 is sucked, and a discharge port through which the sucked fluid is discharged around the pump casing 115 . (117) may be formed.

The pump casing 115 forms a spiral flow space in which the inner space gradually becomes wider from the inlet 116 to the outlet 117, and the fluid discharged from the impeller 113 rotates through the flow space to change the flow rate and hydraulic pressure. Thus, it may be discharged to the discharge port 117 .

An oil chamber for supplying lubricating oil to the drive shaft may be configured between the pump casing 115 and the drive motor 111 , and a mechanical seal is installed in a portion through which the drive shaft passes in the oil chamber to perform airtightness.

In the pump unit 110 configured in this way, when the impeller 113 is rotated by the driving motor 111, suction and discharge power are generated by the vanes of the impeller 113, and the suction port 116 of the pump casing 115. The fluid is sucked and discharged to the discharge port 117 .

At this time, the discharge pipe 210 installed in the water collecting tank is connected to the discharge port 117 of the pump casing 115 to transfer the fluid to the outside of the water collecting tank.

2 to 4 , the submersible pump 100 capable of treating foreign substances in the water collecting tank according to the embodiment of the present invention may include a pocket strainer 120 .

The pocket strainer 120 is installed in the suction port 116 of the pump casing 115 to filter out foreign substances flowing into the suction port 116. It is possible to prevent damage to (113) or the drive motor 111 or the pump casing 115.

When the pocket strainer 120 is installed in the suction port 116 and suction force is generated by the impeller 113 inside the pump casing 115 , the pocket strainer 120 is installed in the suction port 116 by the suction force of the impeller 113 and the resistance of the fluid. As the impeller 113 is convexly formed upward in the direction in which the impeller 113 is located, it is possible to form a pocket space 121 in which foreign substances are caught and stored.

On the other hand, when the suction force is extinguished, the pocket strainer 120 is convexly hit downward by its own weight and gravity of the pocket strainer 120 , and the pocket space 121 is annihilated, and foreign substances accommodated in the pocket space 121 fall to the floor. can be removed.

The pocket strainer 120 may convexly form the pocket space 121 upward by suction force and the resistance of the fluid according to the operation of the pump, or may be convexly struck downward to discharge foreign substances in the pocket space 121 .

The pocket strainer 120 may be formed by weaving metal wires in the form of a net or metal rings in the form of a net to have durability.

The pocket strainer 120 may be formed of a metal having a relatively light weight among metals so that it can be lifted up to the suction port 116 side by the resistance and suction force of the fluid, and the pocket strainer 120 is a pocket space 121 by the suction force. When forming, it may have a depth of the pocket space 121 that does not enter to the inside where the impeller 113 is located.

3 and 4 , the submersible pump 100 capable of treating foreign substances in the water collecting tank according to the embodiment of the present invention may include a foreign substance treatment chamber 130 .

The foreign material treatment chamber 130 is installed on the bottom of the water collecting tank corresponding to the suction port 116 to receive and accommodate foreign materials that are removed by falling to the floor while the pocket space 121 disappears from the pocket strainer 120 .

The foreign material treatment chamber 130 may have an empty space inside, and the foreign material inlet hole 131 through which the foreign material discharged from the pocket strainer 120 flows into the upper portion of the foreign material treatment chamber 130 penetrates to be formed. can

In addition, a treatment inlet hole 133 may be formed on one side of the foreign material treatment chamber 130 to supply a fluid for treating the foreign material flowing into the foreign material treatment chamber 130 to the outside, and the treatment inlet hole ( 133), a treatment discharge hole 135 for discharging foreign matter to the outside together with the fluid flowing into the treatment inlet hole 133 may be formed on the other side surface of the foreign material treatment chamber 130 located in the opposite direction to the treatment inlet hole 133.

The foreign material treatment chamber 130 has a circular cone shape whose area decreases from the bottom to the suction port 116 so that the fluid around the suction port 116 can smoothly flow into the suction port 116. The upper end may be formed in a truncated shape.

The foreign material processing chamber 130 may be formed in a curved surface with a concave outer surface so that the surrounding fluid naturally changes the direction to the suction port 116 to rotate, The inflowing foreign material inlet hole 131 may be located.

An inlet opening/closing member in the form of a rotating door that opens and closes the foreign material inlet hole 131 as it rotates may be installed in the foreign material inlet hole 131, and the inlet opening and closing member is rotatably coupled at one end by a hinge, and the other end is It is installed rotatably up and down around the hinge, and when the foreign material inlet hole 131 is opened, it rotates downward to open it, and when it rotates upward, the foreign material inlet hole 131 can be closed.

Here, when the inlet opening and closing member opens the foreign material treatment chamber 130 , the foreign material discharged from the pocket strainer 120 into the foreign material treatment chamber 130 is introduced into the foreign material treatment chamber 130 , and the foreign material treatment chamber 130 is closed. When sealed, it is possible to prevent a fluid for treating foreign substances from leaking through the foreign substance inlet hole 131 .

In addition, the inlet opening and closing member has an end opposite to the direction coupled by the hinge in a state in which the foreign material inlet hole 131 is opened, that is, an end in the opposite direction rotated to open and close the portion facing the treatment inlet hole 133 . By installing so as to be positioned at can

As shown in FIGS. 1 and 3 , the submersible pump 100 capable of treating foreign substances in the water collecting tank according to an embodiment of the present invention may include a branch treatment pipe 140 and a foreign substance treatment pipe 150 .

The branch treatment pipe 140 may be branched from the discharge pipe 210 or branched from the portion where the discharge port 117 for discharging the fluid from the pump casing 115 is located to supply the discharged fluid to the foreign material treatment chamber 130 . have.

One end of the branch treatment pipe 140 is connected to a portion where the discharge pipe 210 or the discharge port 117 of the pump casing 115 is located, and the other end is connected to the treatment inlet hole 133 of the foreign material treatment chamber 130 . The fluid discharged from the pump unit 110 may be supplied to the foreign material treatment chamber 130 to treat the foreign material.

The branch treatment pipe 140 may have a fixed shape or may be flexibly bent like a rubber hose, and the branch treatment pipe 140 may supply or block the fluid discharged from the pump unit 110 to the branch treatment pipe 140 . For the branch control valve 145 may be installed.

In addition, in the discharge pipe 210 , all fluids discharged from the pump unit 110 in a state in which the branch treatment pipe 140 is opened by the branch control valve 145 can be discharged into the branch treatment pipe 140 . A discharge control valve 170 for opening and closing the pipe 210 may be installed.

For example, when the discharge control valve 170 is opened while the branch treatment pipe 140 is closed by the branch control valve 145 , the fluid discharged from the pump unit 110 is discharged through the discharge pipe 210 . When the discharge pipe 210 is closed by the discharge control valve 170 in a state in which all are transferred to the outside of the water collecting tank and the branch treatment pipe 140 is opened by the branch control valve 145, the pump unit 110 All of the discharged fluid may be provided to the foreign material treatment chamber 130 through the branch treatment pipe 140 .

The branch control valve 145 and the discharge control valve 170 are selection buttons for selecting whether or not the pump unit 110 is started or foreign substances are treated by a pump control panel (not shown) that controls the operation of the pump unit 110 . It may be controlled according to the operation of or automatically operated for a preset time after a preset idle time after the start of the pump unit 110 is stopped.

In the foreign material treatment tube 150 , the foreign material may be mixed with the fluid introduced into the foreign material treatment chamber 130 through the branch treatment tube 140 and discharged to the outside of the foreign material treatment chamber 130 .

The foreign material treatment tube 150 may be connected to the foreign material receiving unit 160 to be described below and provide the foreign material discharged together with the fluid from the foreign material treatment chamber 130 to the foreign material receiving unit 160 .

One end of the foreign material treatment tube 150 may be connected to the treatment discharge hole 135 of the foreign material treatment chamber 130 , and the other end of the foreign material treatment tube 150 may be connected to the foreign material receiving unit 160 .

The foreign material treatment pipe 150 may have a length that can extend from the foreign material treatment chamber 130 to the outside of the water collecting tank so that the foreign material receiving part 160 to be connected can be taken out of the water collecting tank. It can be flexibly bent like a hose so that the position of the foreign material accommodating part 160 can be changed.

As shown in FIG. 1 , the submersible pump 100 capable of treating foreign substances in the water collecting tank according to the embodiment of the present invention may include a foreign substance accommodating part 160 .

The foreign material receiving unit 160 may store the foreign material by filtering the foreign material transferred together with the fluid through the foreign material treatment pipe 150 .

The foreign material accommodating part 160 may be formed in the form of an empty box inside, and the foreign material accommodating part 160 is a pore of a preset size so that the fluid is drained from the fluid supplied to the foreign material accommodating part 160, and only foreign substances are filtered out. It may be composed of a mesh or a perforated plate formed of

The foreign material accommodating part 160 floats the foreign material accommodating part 160 from the water surface of the water collecting tank so that the foreign material accommodating part 160 can be easily taken out of the water collecting tub to handle the stored foreign substances. The buoyancy body 165 may be installed in the part 160 .

3 and 4 , the submersible pump 100 capable of treating foreign substances in the water collecting tank according to the embodiment of the present invention may include an interlocking member 125 .

The interlocking member 125 may interlock the pump unit 110 and the inflow opening/closing member so that the inlet opening/closing member seals or closes the foreign material inlet hole 131 according to the operation of the pump unit 110 .

For example, when the pump unit 110 is started, the foreign material inlet hole 131 is blocked, and when the start of the pump unit 110 is stopped, the inlet opening and closing member is interlocked to open the foreign material inlet hole 131. can

As an example of the interlocking member 125, a servo motor for opening and closing the inlet opening and closing member is installed on the inlet opening and closing member, and when the driving motor 111 operates, the servo motor is electronically controlled together to close the foreign material inlet hole 131, When the operation of the driving motor 111 is stopped, the servo motor may be electronically controlled together to open the foreign material inlet hole 131 .

However, when the interlocking member 125 is configured to be electronically controlled, it is preferable to configure it as in the embodiment because the manufacturing cost is relatively high.

The interlocking member 125 of the embodiment may be implemented as a rod or wire, so that one end of the interlocking member 125 is connected to the central portion of the pocket strainer 120, and the other end may be coupled to the open/closed end of the inlet opening/closing member.

When the interlocking member 125 of the embodiment forms the pocket space 121 convexly upward according to the operation of the pump unit 110, the interlocking member 125 is pulled while the inlet opening/closing member rotates. When the foreign material inlet hole 131 is closed and the start of the pump unit 110 is stopped, the pocket strainer 120 part convexly sags downward by its own weight and gravity, and the pulling force of the interlocking member 125 is released and introduced The opening and closing member may be configured to close the foreign material inlet hole 131 while rotating by its own weight.

The operation and effect between each configuration described above will be described.

The submersible pump 100 capable of treating foreign substances in the water collecting tub according to the embodiment of the present invention is typically a discharge control valve 170 installed in the discharge pipe 210 when transferring the fluid of the water collecting tank to the outside through the discharge pipe 210. The discharge pipe 210 is opened through the , and the branch treatment pipe 140 is closed through the branch control valve 145 .

When the pump unit 110 is started in this state, the fluid of the water collecting tank is introduced through the suction port 116 by the impeller 113 of the pump unit 110 and is discharged through the discharge port 117 while being connected to the discharge port 117. The fluid is transferred to the outside of the water collecting tank through the discharge pipe 210 .

At this time, in a state where the pocket strainer 120 installed in the suction port 116 is convexly positioned downward, a suction force is generated in the suction port 116 according to the operation of the pump unit 110, and the suction port 116 is caused by the resistance of the fluid. As the shape is deformed convexly to the side, a pocket space 121 for filtering foreign substances is formed, and the foreign substances contained in the fluid are located in the pocket space 121 of the pocket strainer 120 so that only the fluid from which the foreign substances are filtered is pumped 110 ), it is possible to prevent damage to the impeller 113, the pump casing 115, or the driving motor 111 by foreign substances.

Here, when the pocket strainer 120 is convexly deformed to form the pocket space 121 , the interlocking member 125 connected to the pocket strainer 120 moves upward according to the shape change of the pocket strainer 120 . While being pulled, the inlet opening/closing member connected to the interlocking member 125 is pulled together upward to close the foreign material inlet hole 131 of the foreign material treatment chamber 130 .

In addition, when the fluid is sucked into the suction port 116 , the fluid positioned around the lower portion of the suction port 116 naturally changes its direction toward the suction port 116 by the shape of the foreign material treatment chamber 130 and flows in, so suction resistance can be reduced to improve pump efficiency.

On the other hand, when removing foreign substances, the operator directly manipulates them through the pump control panel, or when the start of the pump unit 110 in the pump control panel is stopped, it is automatically controlled to process the foreign substances for a preset time after a preset time idle time. can

When the start of the pump unit 110 is stopped, the suction force of the suction port 116 and the resistance of the fluid disappear, and the pocket strainer 120, which formed the pocket space 121 convexly upward, is struck downward, and the pocket space The foreign material located at (121) falls to the bottom and is removed.

At the same time, when the pocket strainer 120 is lowered, the interlocking member 125 is also lowered and the inlet opening/closing member connected to the interlocking member 125 rotates downward to open the foreign material inlet hole 131 to open the pocket strainer ( The foreign material removed from 120 is introduced into the foreign material processing chamber 130 .

On the other hand, if the idle time according to the start of the pump unit 110 for a preset time is over or is operated through the pump control panel to process foreign substances, the pump control panel controls the discharge control valve 170 to the discharge pipe 210 and control the branch control valve 145 to open the branch treatment pipe 140 .

In this state, the pump unit 110 is started again, and as the pump unit 110 sucks the fluid of the water collecting tank through the suction port 116 , the pocket strainer 120 forms a pocket space 121 convexly upward again. And, as the shape of the pocket strainer 120 is changed to be convex upward, the interlocking member 125 is pulled upward, and the inlet opening and closing member connected to the interlocking member 125 closes the foreign material inlet hole 131 .

At the same time, the fluid discharged from the pump unit 110 is supplied to the inside of the foreign material treatment chamber 130 through the branch treatment pipe 140 , and the foreign material treatment tube 150 together with the foreign material accommodated in the foreign material treatment chamber 130 . ) is transferred to the foreign material accommodating part 160 that is floated on the water surface of the water collecting tank.

The fluid containing the foreign material transferred to the foreign material receiving unit 160 is drained back to the water collecting tank by the pores in the foreign material receiving unit 160 , and the foreign material is trapped in the foreign material receiving unit 160 .

When foreign substances are filtered out of the foreign material receiving unit 160 in this way, the operator forcibly takes the foreign material receiving unit 160 out of the water collecting tank, removes the foreign material, and places the foreign material receiving unit 160 on the water surface of the water collecting tank again. foreign matter can be easily treated.

Meanwhile, when processing foreign substances, the pump unit 110 operates only for a preset time and stops the start of the pump unit 110 to enter an idle state.

Therefore, the submersible pump 100 capable of treating foreign substances in the water collecting tank according to the embodiment of the present invention traps and collects foreign substances accumulated in the pocket strainer 120 in the foreign substance processing chamber 130 and branches the foreign substances collected in the foreign substance processing chamber 130 . As the fluid discharged from the pump unit 110 through the discharge pipe 210 and the foreign material treatment pipe 150 is transferred to the foreign material accommodating unit 160, the foreign material in the water collecting tank is easily removed and the pump unit 110 caused by the foreign material ) to prevent failure and improve pump efficiency.

In addition, as the shape of the pocket strainer 120 is changed by the suction force of the pump, it is possible to form a pocket space 121 in which foreign substances are accumulated, or to automatically discharge foreign substances accumulated in the pocket space 121 .

In addition, foreign substances to be treated can be accommodated in the foreign substances accommodating part 160 that is floated on the water surface of the water collecting tank, so that the foreign substances can be easily treated.

In addition, since the pocket strainer 120 and the inlet opening/closing member operate in conjunction with the interlocking member 125, the operation is easy, and the manufacturing cost can be reduced because of the easy manufacturing.

Although the embodiment of the present invention has been described above, the scope of the present invention is not limited thereto, and it is easily changed from the embodiment of the present invention by a person skilled in the art to which the present invention belongs and recognized as equivalent. including all changes and modifications to the scope of

100: submersible pump 110: pump unit
111: drive motor 113: impeller
115: pump casing 116: inlet
117: outlet 120: pocket strainer
121: pocket space 125: interlocking member
130: foreign material processing chamber 131: foreign material inlet hole
133: treatment inlet hole 135: treatment discharge hole
140: branch treatment pipe 145: branch control valve
150: foreign material treatment pipe 160: foreign material receiving unit
165: buoyancy body 170: discharge control valve
210: discharge pipe

Claims (4)

A pump unit that sucks and discharges the fluid in the water tank according to the rotation of the impeller,
It is installed at the suction port where the fluid of the pump part is sucked, and when the fluid is sucked, it rises up by the suction force to form a foreign material pocket where foreign substances are collected. pocket strainer,
A foreign material treatment chamber located in the lower portion of the suction port and into which foreign matter, which is caught in the foreign material pocket, falls to the lower portion due to its own weight as the start of the pump unit is stopped, is introduced;
a branch treatment pipe connecting a portion from which the fluid is discharged from the pump unit to the foreign material treatment chamber so as to treat the foreign substances collected in the foreign material treatment chamber by the discharged fluid;
a foreign material treatment tube for discharging foreign matter collected in the foreign material treatment chamber from the foreign material treatment chamber together with the fluid flowing in through the branch treatment tube; and
and a foreign material accommodating part for filtering and receiving foreign substances contained in the fluid that is floated from the water collecting tank and discharged through the foreign material treatment pipe to collect and easily process the foreign substances discharged from the water collecting tank to the foreign material treatment pipe. Submersible pump capable of handling foreign substances. The method of claim 1,
The foreign material processing chamber is
a foreign material inlet hole through which foreign material flows into the position corresponding to the pocket strainer;
A treatment inlet hole formed on one side of the foreign material treatment chamber through which the fluid flows through the branch treatment pipe, and
and a treatment discharge hole formed on the other side of the foreign material treatment chamber to discharge foreign materials by the fluid flowing into the foreign material treatment chamber through the foreign material treatment pipe. 3. The method of claim 2,
The foreign material processing chamber is
and an inlet opening/closing member installed in the foreign material inlet hole and selectively opening and closing the foreign material inlet hole to prevent the fluid discharged to the branch treatment pipe from being discharged through the foreign material inlet hole. Submersible pump available. 4. The method of claim 3,
When the pocket strainer is moved upward by the suction force of the pump unit or is struck downward, the inlet opening and closing member interlocks to open and close the foreign material inlet hole. A submersible pump capable of handling foreign substances in the water collecting tank.

Images