KR101733109B1 - Drain pump with lifter for controller protecting - Google Patents

Drain pump with lifter for controller protecting Download PDF

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Publication number
KR101733109B1
KR101733109B1 KR1020150124852A KR20150124852A KR101733109B1 KR 101733109 B1 KR101733109 B1 KR 101733109B1 KR 1020150124852 A KR1020150124852 A KR 1020150124852A KR 20150124852 A KR20150124852 A KR 20150124852A KR 101733109 B1 KR101733109 B1 KR 101733109B1
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KR
South Korea
Prior art keywords
controller
mounting plate
pump
cable
pulley
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Application number
KR1020150124852A
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Korean (ko)
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KR20170028059A (en
Inventor
최용주
Original Assignee
인제대학교 산학협력단
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Priority to KR1020150124852A priority Critical patent/KR101733109B1/en
Publication of KR20170028059A publication Critical patent/KR20170028059A/en
Application granted granted Critical
Publication of KR101733109B1 publication Critical patent/KR101733109B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0686—Mechanical details of the pump control unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
    • B66F7/12—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by mechanical jacks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0693—Details or arrangements of the wiring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
    • F04D15/0218—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid the condition being a liquid level or a lack of liquid supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Power Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The present invention relates to a drain pump having a controller protection lifter and a controller that protects the controller from frequent faults in a harsh environment handling various kinds of wastewater so as not to be flooded by possible sewage, Can be separated and replaced from the relatively durable motor pump, thereby reducing the maintenance cost.
According to the present invention, there is provided a drain pump for sucking and transferring wastewater, comprising a motor pump, a lower portion formed with a suction port for sucking wastewater, and a discharge port for discharging wastewater sucked through the suction port A pump body; And a lifter installed to extend and retract in a vertical direction in a state of being supported by the pump main body and to raise and lower the controller provided for controlling the operation of the motor pump so as not to be submerged according to a change in water level.

Description

[0001] DRAIN PUMP WITH LIFTER FOR CONTROLLER PROTECTING [0002]

The present invention relates to a drainage pump, and more particularly to a drainage pump that protects a controller that is frequently in trouble in a harsh environment handling various kinds of wastewater from being immersed in possible wastewater, and a controller that is frequently in trouble in a harsh environment. The present invention relates to a drain pump provided with a controller protection lifter, which can be separated and replaced from a motor pump, thereby reducing maintenance costs.

Generally, a drain pump is a mechanical component having a function of sucking a fluid remaining in the underground or various tanks by the suction force of an impeller rotated by receiving power of the motor and sending the fluid to the outside.

 The conventional drain pump is automatically operated according to the water level in the water tank to adjust the water level, or the water drainage function is performed by water supply by a separate control unit.

 As shown in FIG. 1, the water level adjusting device is provided with a float 15, which is vertically moved up and down according to the water level fluctuation in the water tank 10, A contact 17 connected to the float 15 to be turned on and off and a controller 17 for turning on / off the drain pump 50 in accordance with the on / off operation of the contact switch 16, .

 The float 15 and the contact switch 16 are connected to each other by a connecting member 14, such as a lightweight thread, so that the float 15 and the contact switch 16 interlock with each other. The float 15 has a function of on / off operation of the contact switch 16 as the water level in the water tank 10 is raised and raised and then the connection member 14 is provided with a tension force.

 Therefore, when the fluid in the water tank 10 rises above a certain level, the float 15 is raised so that the contact switch 15 is turned on to input a signal to the control unit 17, The flow rate in the water tank 10 can be automatically adjusted by discharging the fluid in the water tank 10 by operating the pump 50. [

However, in spite of the basic sealing process, the drain pump of the prior art is continuously exposed to the harsh environment in which the sewage treated with various substances is handled, so that the drain pump is easily broken and disused. What is particularly lacking is that the electronic controller is disposing of the entire product including the relatively durable motor pump as the main cause of failure due to the corrosion caused by the sewage.

Korean Registered Utility Model Registration No. 0456609 (2011.11.02)

It is therefore an object of the present invention to provide a controller which can be frequently broken down in a harsh environment handling various kinds of wastewater, And a drain pump provided with a lifter for protecting the controller.

According to an aspect of the present invention, there is provided a drain pump including a motor pump, a suction port formed at a lower portion thereof for sucking wastewater, a discharge port for discharging wastewater sucked through the suction port, A pump main body; And a lifter which is installed to extend and retract in a vertical direction in a state of being supported by the pump main body and lifts up the controller provided for controlling the operation of the motor pump so as not to be submerged according to a change in water level. do.

Here, the lifter may include: a base provided at an upper portion of the pump body; A plurality of antenna pawls folded upward in the base so as to extend and retract upward; And a mounting plate coupled to the upper end of the antenna pole to raise the antenna pole when the antenna pole is extended and descend upon contraction.

Further, when the water level rises through the control of the controller, the lifter lifts up the mounting plate to prevent the controller from being flooded.

In addition, a controller cartridge having the controller incorporated therein is detachably mounted on the mounting plate.

A pair of guide rails formed on the upper surface of the mounting plate so as to be spaced apart from each other and facing each other to mount the controller cartridge on the mounting plate, and the controller cartridge includes a cartridge body having the controller therein, And a sliding cabinet of a flat plate type which protrudes leftward from the bottom of the main body and by mail and is fitted in correspondence with the pair of guide rails.

A plurality of first fixed pulleys connected to a first cable connected to the controller and a second cable connected to the motor pump for electrical connection between the controller and the motor pump and fixed to the inside of the sliding cabinet; A first fixed pulley and a second fixed pulley, the first fixed pulley and the second fixed pulley being coupled to each other in a sliding cabinet, A plurality of first moving pulleys for allowing the first cable to be drawn out and for withdrawing the first cable that has been drawn away from the first fixing pulley; And a plurality of first springs elastically supporting the first moving pulley so that the first moving pulley has a tendency to move in a direction away from the first fixing pulley, and the first cable is inclined to be drawn into the sliding cabinet, When the external force is applied to the sliding cabinet, withdrawing from the inside of the sliding cabinet is allowed.

A plurality of second fixing pulleys fixed inside the mounting plate; Wherein the second fixing pulley is provided at a position spaced apart from the second fixing pulley in an upper end portion of the mounting plate and supports the second cable in a zigzag manner with the second fixing pulley so as to approach A plurality of second moving pulleys for allowing the second cable to be drawn out and for withdrawing the second cable that has been drawn away from the second fixing pulley; And a plurality of second springs elastically supporting the second moving pulleys such that the second moving pulleys tend to move in a direction away from the second fixing pulleys so that the second cables tend to be drawn into the mounting plate, And when the external force is applied, it is allowed to be drawn out from the inside of the mounting plate.

The controller periodically operates the motor pump, and stops operation of the motor pump when the motor pump idles due to no wastewater.

In addition, when the operation of the motor pump is stopped due to idling, the controller gradually increases the operation period of the motor pump to reduce energy consumption.

The drain pump according to the present invention can protect the controller which can not be frequently operated in a harsh environment handling various kinds of wastewater by immersing the wastewater in a possible sewer.

In addition, the present invention enables a controller, which is often in trouble in a harsh environment handling sewage, to be separated and replaced from a relatively durable motor pump, so that even if the controller fails, It is possible to use it for a long time by replacing only the corresponding part.

Further, the present invention is advantageous in that the controller can detect the wastewater through current detection, thereby eliminating the need for a separate device for detecting wastewater such as a float, and does not need to worry about the failure.

In addition, the present invention allows the cables connecting the controller and the motor pump to be withdrawn only when necessary. Since the cables can be expanded or contracted by a pulley structure, a plurality of pulleys constituting a pulley structure in a harsh environment, , There is an advantage in that even if some of the springs are damaged, they can be operated independently.

Brief Description of the Drawings Fig. 1 is a view for explaining a conventional drain pump;
2 is a perspective view for explaining a configuration of a drain pump according to an embodiment of the present invention;
3 is a perspective view for explaining a detachable configuration of a controller cartridge in a drain pump according to an embodiment of the present invention;
FIGS. 4A and 4B are a series of views for explaining a pulley structure of a first cable connected to a controller from a drain pump according to an embodiment of the present invention;
5 is a view for explaining a pulley structure of a second cable connected to a motor pump in a drain pump according to an embodiment of the present invention;
6A to 6C are a series of references for explaining the operation of a lifter for lifting and lowering a controller cartridge in response to a change in water level in a drain pump according to an embodiment of the present invention

The drain pump according to the embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. In the accompanying drawings, the dimensions of the structures are enlarged to illustrate the present invention, and are actually shown in a smaller scale than the actual dimensions in order to understand the schematic structure.

Also, the terms first and second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. On the other hand, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

FIG. 2 is a perspective view for explaining a construction of a drain pump according to an embodiment of the present invention, and FIG. 3 is a perspective view for explaining a detachable structure of a controller cartridge in a drain pump according to an embodiment of the present invention.

As shown in the drawing, the drain pump according to the embodiment of the present invention is a portable drain pump manufactured to be portable and easy to move, and includes a pump body 110, a controller cartridge 130 having a built-in PCB including a controller, And a lifter 120 for lifting and lowering the controller cartridge 130. The controller cartridge 130 can be lifted and lowered in response to a change in water level so that the controller is not flooded by the lifter 120, The controller can be easily separated from the main body 110 and replaced so as to protect the controller from being damaged for a long period of time. In case of failure, the motor pump including the driving motor and the impeller can be replaced without replacing the entire motor pump .

Hereinafter, a drain pump according to an embodiment of the present invention will be described in detail with reference to the above components.

The pump main body 110 includes a motor pump including a driving motor and an impeller. A suction port 111 for sucking wastewater is formed in a lower portion of the pump main body 110, and wastewater sucked through the suction port 111 is discharged to a side thereof An outlet 112 is formed. The discharge port 112 is connected to a hose for guiding discharged sewage to the outside. The lower portion of the pump main body 110 in which the suction port 111 is formed serves as a substantial filter for filtering solids of a certain size or more contained in the wastewater.

The lifter 120 serves to mount and lift the controller cartridge 130. To this end, the lifter 120 includes a base 123, an antenna pole 122, and a mounting plate 121.

The base 123 is provided at one side of the upper portion of the pump body 110 to provide an internal space for supporting the antenna pawls 122 so that they can be drawn in and out. Although the base 123 has a cylindrical shape and is formed to protrude from one side of the upper portion of the pump body 110, the base 123 may be formed in other various forms or may be combined.

The antenna pawl 122 functions to raise and lower the mounting plate 121 on which the controller cartridge 130 is mounted and has a plurality of unit pawls folded / . The antenna pole 122 adopts the structure of the antenna pole which was installed in the vehicle until the early 2000's in the country. The antenna pole 122 is provided with a motor and a gear assembly inside the base 123, A guide reel or a rack belt for folding and operating the antenna pawl 122 may be installed up to the inside of the antenna pawl 122 (see Korean Registered Utility Model No. 0162462, Korean Registered Utility Model No. 0142383). It is the antenna pole 122 that induces the lifting and lowering of the controller cartridge 130 mounted on the mounting plate 121 while actually operating among the constituent elements of the lifter 120. The antenna pawl 122 is controlled by a controller so that the mounting plate 121 is moved up and down according to the change of the water level so that the controller is not flooded. That is, when the water level rises, the controller causes the antenna pawl 122 to be extended by the controller to raise the controller cartridge 130 mounted on the mounting plate 121, and conversely, when the water level is lowered, The controller cartridge 130 mounted on the mounting plate 121 is lowered. Such operation will be described later in detail. It should be noted that the antenna pawl 122 may be configured to be manually operated only by eliminating the configuration of a motor, a gear assembly, and a rack belt provided inside the antenna pawl 122.

The mounting plate 121 is mounted on the upper surface of the antenna pawl 122 so that the controller cartridge 130 is mounted on the upper surface of the mounting pawl 121. When the antenna pawl 122 is extended, do. As shown in the figure, the guide rails 121a are formed in a circular plate shape corresponding to the base 123, and a pair of guide rails 121a having a substantially L-shaped cross section are formed for mounting the controller cartridge 130. Here, the material of the guide rail 121a may be made of a synthetic resin rather than a rigid metallic material, and is preferably formed integrally with the mounting plate 121. When the pair of guide rails 121a are provided, the sliding cabinet 130b formed in a flat plate shape below the controller cartridge 130 can be inserted and fixed along the guide rails 121a in a sliding manner.

The lifter 120 is provided with a cylindrical protective cap 125 which is open at the bottom and protects the controller cartridge 130 mounted on the upper surface of the mounting plate 121 by covering the upper surface of the mounting plate 121 .

The controller cartridge 130 incorporates a PCB including a controller to protect the controller and detachably mount the controller on the upper surface of the mounting plate 121. [ To this end, the controller cartridge 130 includes a cartridge body 130a having the controller built therein, and a pair of guide rails 121a protruding from the lower side of the cartridge body 130a in the left- And a sliding cabinet 130b having a flat plate shape. 2 shows a state in which the controller cartridge 130 is attached to the mounting plate 121 by a sliding method and FIG. 3 shows a state in which the controller cartridge 130 is detached from the mounting plate 121 by a sliding method. Show the figure. The first cable 131 connected to the controller and the second cable 114 connected to the motor pump for electrical connection between the controller and the motor pump in the process of mounting the controller cartridge 130 are connected to each other, The first cable 131 and the second cable 114 can be drawn out by applying an external force only when the first cable 131 and the second cable 114 are required for convenience of installation, Such a configuration will be described later in detail.

In addition, the controller included in the controller cartridge 130 periodically controls the motor pump to stop operation of the motor pump immediately when the motor pump idles due to no wastewater. According to this configuration, it is possible to judge whether or not the wastewater is accumulated in the hull without an additional device such as a float sensor having many troubles, and to operate the motor pump efficiently only when necessary.

In the control method of the controller, the controller can determine whether the motor pump is idling by the fine voltage determined by the consumed current of the motor pump. If it is determined that the motor pump is idling, . Further, when the operation of the motor pump is stopped due to idling, the controller gradually increases the operation period of the motor pump to reduce the number of operations during the reference time, thereby reducing energy consumption.

4A and 4B are a series of reference views illustrating a pulley structure of a first cable connected to a controller in a drain pump according to an embodiment of the present invention. Fig. 6 is a reference view for explaining the pulley structure of the second cable connected to the pump; Fig.

As described above, the drain pump according to the embodiment of the present invention includes a first cable 131 connected to the controller for electrical connection between the controller and the motor pump in the process of mounting the controller cartridge 130, and a second cable 131 connected to the motor pump The second cable 114 is connected to each other so that the first cable 131 and the second cable 114 can be drawn out by an external force only when the first cable 131 and the second cable 114 are required for convenience of connection and a neat design.

In order to allow the first cable 131 to be drawn out, a first fixed pulley 132a and a second fixed pulley 132b are provided in the sliding cabinet 130b of the controller cartridge 130 as shown in FIGS. 4a to 4b, A pulley 132b, and a first spring 133 are provided. The first fixed pulley 132a is fixedly installed in the sliding cabinet 130b. The first moving pulley 132b is installed in the sliding cabinet 130b so as to be movable at a position spaced apart from the first fixing pulley 132a and rotates together with the first fixing pulley 132a, The cable 131 is supported in a staggered manner so as to allow the first cable 131 to be drawn out when it approaches the first fixing pulley 132a and to be pulled out when it is moved away from the first fixing pulley 132a So that the first cable 131 can be recovered. The first spring 123 elastically supports the first moving pulley 132b so as to have a tendency to move in a direction away from the first fixing pulley 132a.

According to the pulley structure, as shown in FIGS. 4A to 4B, when the first cable 131 tends to be drawn into the sliding cabinet 130b and an external force equal to or greater than a predetermined value is applied to the sliding cabinet 130b, 130b. A first connection terminal 134 is provided at an end of the first cable 131 for connection with the second cable 114.

5, a second fixing pulley 126a and a second moving pulley 126b are provided in the mounting plate 121 of the lifter 120 to allow the second cable 114 to be drawn out, And a second spring 127 are provided. The second fixing pulley 126a is fixed to the inside of the mounting plate 121. [ The second moving pulley 126b is installed movably in a position spaced apart from the second fixing pulley 126a in the mounting plate 121 and is rotatably supported by the second fixing pulley 126a, The cable 114 is supported in a staggered manner so as to allow the second cable 114 to be drawn out when it approaches the second fixing pulley 126a and to be pulled out of the second fixing pulley 126a So that the second cable 114 can be recovered. The second spring 116 elastically supports the second moving pulley 126b so as to have a tendency to move in a direction away from the second fixed pulley 126a.

According to such a pulley structure, the second cable 114 tends to be drawn into the mounting plate 121 of the lifter 120 as in the case of the first cable 131, 121 through the through-hole 121d. A second connection terminal 113 is provided at an end of the second cable 114 for connection with the first cable 131.

In the case of the above-mentioned pulley structure, there is a somewhat complicated surface in consideration of only the structure for pulling in and out the first cable 131 and the second cable 114. However, a large width is not required in the vertical direction in terms of the installation space, Even if one of the pulleys and the springs of the pulleys is disengaged or damaged, there is an advantage that the durability can be relied on to the extent that there is no problem in terms of the entire function. This highly reliable configuration is suitable for harsh environments handling sewage.

Hereinafter, the operation of the drain pump according to the present invention will be described in detail with reference to the accompanying drawings. 6A to 6C are a series of reference views for explaining the operation of the lifter for lifting and lowering the controller cartridge in response to a change in the water level in the drain pump according to the embodiment of the present invention.

6A shows a state of low water level where drainage is necessary but is not flooded up to the controller cartridge 130. [ In this case, a motor pump (motor 140 + impeller 150) built in the pump body is operated to suck wastewater through the suction port 111 and discharge it through the hose connected to the discharge port 112. On the other hand, the controller that determines that the water level sensor is installed through the sensing of the installed water level sensor maintains the shrunk state without operating the antenna pawl 122 of the lifter 120.

6B shows a state of heavy water level to the extent that it floods up to the controller cartridge 130 as well as the drain water. In this case, the motor pump built in the pump body is operated as described above to suck wastewater through the suction port 111 and discharge it through the hose connected to the discharge port 112. The controller which determines the heavy water delegation through sensing of the water level sensor operates the antenna pawl 122 of the lifter 120 to be stretched in a contracted state to adjust the height of the mounting plate 121 on which the controller cartridge 130 is mounted So that it can be maintained higher than the water level.

FIG. 6C shows the water level to such an extent that the sewage is overflowed. In this case, the motor pump incorporated in the pump main body operates as much as possible to discharge the wastewater, and the controller that determines the high delegation through the sensing of the water level sensor further operates the antenna pawl 122 of the lifter 120, The height of the mounting plate 121 on which the controller cartridge 130 is mounted is elevated so as to be maintained higher than the water level.

As described above, the drain pump of the present invention can safely protect the controller from being flooded by the operation of raising and lowering the controller cartridge 130 in which the controller is built in correspondence with the water level as well as the operation of discharging the waste water.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is clear that the present invention can be suitably modified and applied in the same manner. Therefore, the above description does not limit the scope of the present invention, which is defined by the limitations of the following claims.

110: pump body 111: inlet
112: outlet 120: lifter
121: mounting plate 122: antenna pole
123: base 125: protective cap
130: controller cartridge 130a:
130b: sliding cabinet 132a: first fixed pulley
132b: first moving pulley 133: first spring

Claims (10)

A drain pump for sucking and discharging wastewater, comprising:
A pump main body having a built-in motor pump, a suction port for sucking wastewater in a lower portion thereof, and a discharge port for discharging wastewater sucked through the suction port;
And a lifter which is installed to extend and retract in a vertical direction in a state of being supported by the pump main body and lifts up the controller provided for controlling the operation of the motor pump so as not to be submerged according to a change in water level,
The lifter includes: a base provided at an upper portion of the pump body; A plurality of antenna pawls folded upward in the base so as to extend and retract upward; And a mounting plate connected to the upper end of the antenna pole and rising when the antenna pole is extended and contracted when the antenna pole is extended. When the water level is increased based on the sensing of the water level sensor, A controller raises the mounting plate to prevent the controller from being submerged,
A pair of guide rails provided on the upper surface of the mounting plate and spaced apart from each other and facing each other to face each other is provided on the mounting plate to mount the controller cartridge on the mounting plate, Wherein the controller cartridge is composed of a cartridge body having the controller and a flat-type sliding cabinet protruding from the left side of the cartridge body in the lower portion of the cartridge body in correspondence with the pair of guide rails,
A plurality of first fixed pulleys connected to a first cable connected to the controller and a second cable connected to the motor pump for electrical connection between the controller and the motor pump and fixed to the inside of the sliding cabinet; A first fixed pulley and a second fixed pulley, the first fixed pulley and the second fixed pulley being coupled to each other in a sliding cabinet, A plurality of first moving pulleys for allowing the first cable to be drawn out and for withdrawing the first cable that has been drawn away from the first fixing pulley; And a plurality of first springs elastically supporting the first moving pulley so that the first moving pulley has a tendency to move in a direction away from the first fixing pulley, and the first cable is inclined to be drawn into the sliding cabinet, A plurality of second fixing pulleys fixedly installed in the mounting plate to allow the sliding of the sliding cabinet from the inside of the sliding cabinet when an external force is applied thereto; Wherein the second fixing pulley is provided at a position spaced apart from the second fixing pulley in an upper end portion of the mounting plate and supports the second cable in a zigzag manner with the second fixing pulley so as to approach A plurality of second moving pulleys for allowing the second cable to be drawn out and for withdrawing the second cable that has been drawn away from the second fixing pulley; And a plurality of second springs elastically supporting the second moving pulleys such that the second moving pulleys tend to move in a direction away from the second fixing pulleys so that the second cables tend to be drawn into the mounting plate, Or more is applied to the inside of the mounting plate so as to be allowed to be drawn out from the inside of the mounting plate. delete delete delete delete delete delete The method according to claim 1,
Wherein the controller periodically operates the motor pump and stops operation of the motor pump when the motor pump idles due to no wastewater. 9. The method of claim 8,
Wherein when the operation of the motor pump is stopped due to an idle rotation, the controller gradually increases an operation cycle of the motor pump to reduce energy consumption. delete
KR1020150124852A 2015-09-03 2015-09-03 Drain pump with lifter for controller protecting KR101733109B1 (en)

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KR101733109B1 true KR101733109B1 (en) 2017-05-08

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