KR102208778B1 - Displacement level sensor - Google Patents

Abstract

The present invention relates to a drainage level sensor. The drainage level sensor includes: a cylindrical body with a sealed upper part; a control pipe provided in a lower part of the body; a connection plate installed on the control pipe to be adjusted vertically in position; a float assembly having an upper part inserted into the inside of the body and the inside of the control pipe and having a lower part protruding to a lower part of the control pipe, and operating a warning switch and a drainage switch while being lifted in accordance with the water level of a sewage tank; the drainage switch installed in a lower part in the body, and operating a drainage pump installed on a discharge pipeline of the sewage tank; the warning switch installed in an upper part of the drainage switch in the body, and operating an alarm means sounding an alarm for drainage malfunction; and an operation display lamp installed on one side of an outer circumference of the body, and displaying a drainage pump operation condition and a warning means operation condition. By using such technical configurations, the stable drainage of the sewage tank can be promoted, the maintenance of the sewage tank can be facilitated, and the drainage of the sewage tank can be efficiently controlled.

Description

Drainage level sensor {DISPLACEMENT LEVEL SENSOR}

The present invention relates to a drainage level sensor installed in a wastewater tank, and in more detail, it is possible to operate a drainage pump when the level of wastewater flowing into the wastewater tank rises by a certain level, and the water level of the wastewater tank during the operation of the drainage pump It relates to a drainage level sensor capable of stopping the operation of the drainage pump when is lowered by a certain level.

In general, wastewater generated in various industrial sites is not discharged directly to rivers or rivers, but is purified to a certain level in a separate wastewater treatment facility, and then reused or disposed of.

In particular, the present invention operates a drainage pump that is installed in a discharge pipe of a wastewater tank that stores wastewater generated in an industrial site and allows the wastewater flowing into the wastewater tank to be drained to the wastewater treatment facility according to the level of the wastewater tank. Relate to the drainage level sensor for.

Various types of the drainage level sensor are used, and the present invention particularly relates to a drainage level sensor of a type that operates a drainage pump by turning on and off an operation limit switch through a float.

Drainage level sensor related to the present invention usually has a connection plate flanged to the connection pipe of the wastewater tank, and a plurality of floats for turning on and off the operation switch on the stem introduced into the interior of the wastewater tank can be lifted and lowered within a certain range. It has a freely installed form.

The following Patent Document 1 discloses a water level sensing device using a float level sensor, and the following Patent Document 2 discloses a float protection type water level sensor.

Republic of Korea Patent Publication No. 10-1123157 (registered on February 27, 2012) Republic of Korea Patent Publication No. 10-2015-0047237 (published on May 04, 2015)

The drainage level sensor according to the prior art has a problem in that the drain pump malfunctions because the float and switch operations are not smooth during the use process, and there is a concern that a lot of damage may occur due to overflow of the wastewater tank due to the non-operation of the drain pump.

In addition, since the drainage level sensor according to the prior art cannot adjust the input length of the stem and the float during the installation process of the wastewater tank, it is difficult to accurately set the operation position of the drainage pump.

In addition, the drainage level sensor according to the prior art has a problem in that it is difficult to respond quickly when a malfunction occurs because the normal operation state and abnormal state of the drainage pump cannot be visually confirmed.

The present invention is to solve the problem of the drainage level sensor according to the prior art, and an object thereof is to provide a drainage level sensor capable of operating a drainage pump more stably according to the level of the wastewater tank.

Another object of the present invention is to provide a drainage level sensor that facilitates management of a drainage pump by making it possible to visually check the operating state of the drainage pump.

Another object of the present invention is to provide a drainage level sensor that enables more efficient drainage control by allowing the input length of the stem and float to be adjusted during the installation process.

In order to achieve the object as described above, the water level sensor according to the present invention includes a cylindrical body having an upper end sealed; A control tube provided under the main body; A connection plate installed on the control tube to enable position adjustment in the vertical direction; A float assembly having an upper portion inserted into the inside of the control pipe and into the body, the lower portion protruding to the lower portion of the control pipe, and operating a drain switch and a warning switch while raising and lowering according to the level of the wastewater tank; A drain switch installed in the lower part of the main body and operating a drain pump installed in the discharge pipe of the waste water tank; It characterized in that it comprises a; is installed above the drain switch inside the main body, a warning switch for operating an alarm means for alarming the operation of abnormal drainage.

The drainage level sensor according to the present invention is installed on one side of the outer circumference of the main body, and includes an operation indicator lamp for displaying an operating state of a drain pump and an operating state of a warning means.

The drainage level sensor according to the present invention has a plurality of ring-type fastening grooves formed in the vertical direction on the outer periphery of the control pipe, and the control is fastened to any one of the plurality of ring-type fastening grooves of the control pipe at the top of the wastewater tank fastening part of the connection plate It characterized in that the pipe fastening part is provided.

The float assembly of the drainage level sensor according to the present invention comprises: a first stem whose upper end is inserted into the interior of the control tube; An atmospheric water level float installed at the lower end of the first stem; A drain water level float installed above the atmospheric water level float of the first stem; A warning level float installed above the drainage level float of the first stem; A finishing disk installed on the top of the first stem inside the control tube; A spring support installed on the lower part of the finishing disk of the first stem; Compression spring installed between the finishing disk and the spring support; A second stem installed on the top of the finishing disk; A drain operation member installed to be movable in a vertical direction on an upper outer periphery of the second stem; It characterized in that it comprises a; warning operation member installed on the upper portion of the drain operation member of the outer periphery of the second stem.

In the drainage switch of the drainage level sensor according to the present invention, an elastic switch piece for operating a switch button is provided on the switch body, a magnet is fixedly installed at the inner tip of the elastic switch piece, and the warning switch is an elastic switch that operates the switch button on the switch body. A switch piece is provided, and a magnet is fixedly installed at the inner tip of the elastic switch piece.

According to the drainage level sensor according to the present invention, it is possible to achieve stable drainage of the wastewater tank by operating or stopping the drainage pump by turning on and off the drainage switch according to the water level of the wastewater tank.

According to the drainage level sensor according to the present invention, it is possible to check the drainage standby state, the drainage pump operation state, and the drainage pump non-operation state from the outside through the operation indicator lamp provided in the main body, thereby facilitating maintenance of the wastewater tank. There will be.

According to the drainage level sensor according to the present invention, it is possible to adjust the input length of the stem and the float during the installation process, and accordingly, the operating water level and the stop water level of the drainage pump can be adjusted within a certain range, so that the drainage control of the wastewater tank is efficient. You can do it.

1 is a perspective view of a water level sensor according to the present invention,
2 is a front view of the water level sensor according to the present invention,
3 is a longitudinal sectional view of the main part of the water level sensor according to the present invention,
4 is an installation state diagram of the water level sensor according to the present invention,
Figure 5 is an operating state diagram of the water level sensor according to the present invention.

Hereinafter, a drainage level sensor according to the present invention will be described in detail with reference to the accompanying drawings. For reference, the size of the constituent elements shown in the drawings referred to in describing the present invention, the thickness of the line, etc. may be somewhat exaggerated for convenience of understanding.

In addition, terms used in the description of the present invention are defined in consideration of functions in the present invention, and thus may vary according to user, operator intention, custom, and the like. Therefore, the definition of this term should be made based on the contents of the entire specification.

And in the present application, terms such as'include' and'have' refer to the existence of specific numbers, steps, actions, components, parts, or a combination thereof described in the specification, but one or more other It is to be understood that the presence or addition of features or numbers, steps, actions, components, parts, or combinations thereof, does not preclude the possibility of preliminary exclusion.

In addition, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, only the present embodiment makes the disclosure of the present invention complete, and the scope of the invention to those of ordinary skill in the art. It is provided to be fully informed.

Therefore, in the present invention, various changes can be made and various forms can be obtained, and implementation examples (aspects) (or embodiments) will be described in detail in the specification. However, this is not intended to limit the present invention to a specific form of disclosure, and should be understood to include all changes, equivalents, or substitutes included in the technical idea of the present invention, and the expression of the singular number used in the present specification is clearly different from the context. Includes plural expressions unless they are meant to be.

However, in describing the present invention, detailed descriptions of well-known or known functions or configurations will be omitted in order to clarify the subject matter of the present invention.

Hereinafter, “upward”, “downward”, “front” and “rear” and other directional terms are defined based on the state shown in the drawings.

1 is a perspective view of a drainage level sensor according to the present invention, FIG. 2 is a front view of a drainage level sensor according to the present invention, and FIG. 3 is a longitudinal sectional view of essential parts of the drainage level sensor according to the present invention.

The drainage level sensor 100 according to the present invention includes a main body 110, a control pipe 120, a connection plate 130, a float assembly 140, a drain switch 150, a warning switch 160, an operation indicator lamp ( 170).

The main body 110 is a part in which the drain switch 150 and the warning switch 160 are embedded, and has a cylindrical shape with an upper end portion sealed.

An elevating guide pipe 111 for guiding the elevating of the drainage operation member 147a and the warning operation member 147b of the float assembly 140 to be described later is installed in the lower center of the body 110.

The control tube 120 is a part for adjusting the position of the connection plate 130 and is provided at the lower end of the main body 110.

A plurality of ring-shaped fastening grooves 121 are provided on the outer periphery of the adjustment tube 120 in the vertical direction.

The connection plate 130 is a part that is fastened to the flange 231 provided in the connection pipe 230 of the wastewater tank 200 and is installed in the control pipe 120 so that the position can be adjusted in the vertical direction.

The connection plate 130 has a control pipe fastening part 132 that is fastened to the control tube 120 through a plurality of fastening screws 133 at the upper end of the wastewater tank fastening part 131.

The float assembly 140 is a part that operates the drain switch 150 and the warning switch 160 while raising and lowering according to the water level of the wastewater tank 200.

The upper portion of the float assembly 140 is inserted into the interior of the control tube 120 and the body 110, and the lower portion of the float assembly 140 protrudes toward the lower portion of the control tube 120.

The float assembly 140 includes a first stem 141 whose upper end is inserted into the adjustment tube 120; An atmospheric water level float (142a) installed at the lower end of the first stem (141); A drainage level float (142b) installed above the atmospheric level float (142a) of the first stem (141); Warning water level float (142c) installed above the drainage level float (142b) of the first stem (141); A finishing disk 143 installed on the upper end of the first stem 141 inside the control tube 120; A spring support 144 installed under the finishing disk 143 of the first stem 141; Compression spring 145 installed between the finishing disk 143 and the spring support 144; A second stem 146 installed on the top of the finishing disk 143; A drainage operation member (147a) installed to be movable in the vertical direction on the upper outer periphery of the second stem 146; It includes; warning operation member (147b) installed on the upper portion of the drain operation member (147a) of the outer periphery of the second stem (146).

The drain operation member 147a and the warning operation member 147b of the float assembly 140 are formed of a material to which magnets can be adhered well, for example, in a cylindrical shape of iron.

The drain operation member 147a of the float assembly 140 is installed so as to be elevated in the vertical direction between the lower stopper 148a and the upper stopper 148b installed on the second stem 146, and the warning operation member 147b ) Is fixedly installed through a pair of stoppers.

The drain switch 150 is a part that operates the drain pump 300 installed in the discharge pipe 220 of the wastewater tank 200 and is installed in the lower part of the body 110.

The drain switch 150 is provided with an elastic switch piece 152 for operating the switch button on the switch body 151, and a magnet 153 is fixedly installed at the inner tip of the elastic switch piece 152.

The warning switch 160 is a part for operating an alarm means for alarming an abnormal operation of the drain pump, and is installed above the drain switch 150 inside the main body 110.

The warning switch 160 is provided with an elastic switch piece 162 for operating the switch button on the switch body 161, like the drain switch 150, and a magnet 163 is fixed to the inner tip of the elastic switch piece 162 It is installed.

Since the drain switch 150 and the warning switch 160 are a kind of limit switch and are self-evident in the technical field related to the present invention, a detailed description thereof will be omitted.

The operation indicator lamp 170 is a part for displaying the operation state of the drain pump and the operation state of the warning means, and is installed on one side of the outer circumference of the main body 110.

The operation display lamp 170 is connected to the drain switch 150 and the warning switch 160 through a control circuit (not shown).

Figure 4 is a state diagram of the installation of the water level sensor according to the present invention.

The drainage level sensor 100 according to the present invention is installed in the connection pipe 230 provided on the upper end of the wastewater tank 200 as shown in FIG. 4.

When installing the drainage level sensor 100 according to the present invention, the first stem 141 of the float assembly 140 is inserted into the wastewater tank 200 through the connection pipe 230, and the connection plate 130 After attaching the lower end of the wastewater tank fastening part 131 to the upper end of the flange 231 of the connection pipe 230, connect it with the wastewater tank fastening part 131 of the connection plate 130 with a fastening bolt (not shown). The flange 231 of the tube 230 is fastened.

In the drainage level sensor 100 according to the present invention, the atmospheric water level float 142a installed at the lower end of the outer periphery of the first stem 141 is related to the stoppage of the drain pump 300.

That is, when the water level of the wastewater tank 200 decreases to the position of the atmospheric water level float 142a while drainage is in progress by the operation of the drainage pump 300 at the drainage level, the operation of the drainage pump 300 is stopped. The water level of the wastewater tank 200 is the atmospheric level.

Since the water level sensor 100 according to the present invention can change the position of the connection plate 130 in the vertical direction, the position of the air level float 142a and the air level can be adjusted.

For example, the length of the first stem 141 that can be introduced into the wastewater tank 200 when the position of the connection plate 130 installed in the control pipe 120 so as to be movable in the vertical direction is moved downward Since the distance is shortened, the location of the atmospheric water level float (142a) and the atmospheric water level are set high. Conversely, when the location of the connection plate 130 is moved upward, the first that can be inserted into the wastewater tank 200 Since the length of the stem 141 becomes longer, the position of the atmospheric water level float 142a and the atmospheric water level are set high.

5 is an operational state diagram of the water level sensor according to the present invention.

When the drainage level sensor 100 according to the present invention is installed in the wastewater tank 200 and power is supplied to the control circuit, the operation indicator lamp 170 displays the standby operation.

At this time, the standby operation indication may be a state in which the operation indication lamp 170 is lit in green.

When the wastewater flows into the wastewater tank 200 through the inlet pipe 210 in the initial installation state, the water level of the wastewater tank 200 gradually rises.

In the initial installation state and the state in which the water level of the wastewater tank 200 has not risen to the position of the atmospheric water level float 142a installed at the lower outer circumference of the first stem 141, the first stem 141 The float assembly 140 including) is maintained in a state lowered to the maximum by its own weight, and at this time, the compression spring 145 installed between the finishing disk 143 and the spring support 144 is in a maximum compression state.

When wastewater flows into the wastewater tank 200 through the inlet pipe 210 and the water level rises to the position of the atmospheric water level float 142a installed at the lower outer circumference of the first stem 141, the atmospheric water level float 142a The entire float assembly 140 including the first stem 141 as shown in (b) of FIG. 5 is raised first due to the buoyancy generated by the submersion.

When the wastewater continues to flow in the first rising state and the water level of the wastewater tank 200 rises to the position of the drainage water level float 142b, the additional buoyancy generated when the drainage level float 142b is flooded is shown in FIG. ), the whole of the float assembly 140 including the first stem 141 is raised secondarily.

When the float assembly 140 is raised a second time, the magnet 153 of the drain switch 150 is attached to the drain operation member 147a installed on the outer periphery of the second stem 146 and the drain switch 150 is turned on ( on), and accordingly, the drainage pump 300 installed in the discharge pipe 220 of the wastewater tank 200 is operated, and the drainage of the wastewater tank 200 proceeds.

While the drainage pump 300 is operated and drainage is in progress, the operation indicator lamp 170 displays the drainage operation.

At this time, the drainage operation indication may be a state in which the operation indication lamp 170 blinks in blue, for example.

In the process of drainage by the operation of the drainage pump 300, the water level of the wastewater tank 200 gradually decreases, and when the water level of the wastewater tank 200 becomes lower than the position of the drainage level float 142b, the drainage level float As the additional buoyancy through (142b) disappears, the float assembly 140 except for the drainage operation member 147a is first lowered.

While the float assembly 140 is first descending, the drainage operation member 147a installed so as to be movable in the vertical direction on the upper outer circumference of the second stem 146 continues as shown in FIG. 5(d). Since the magnet 153 is attached, the drain switch 150 is maintained in an on state.

When the drainage continues in the first lowering state, the float assembly 140 descends secondly, and the upper stopper 148b of the drainage operation member 147a installed on the second stem 14 attaches the drainage operation member 147a together. As the drainage operation member 147 descends accordingly, it is separated from the magnet 153 of the drainage switch 150 at the atmospheric water level of FIG. 5(b), and at this time, the elastic switch piece of the drainage switch 150 As 152 is restored, the drain switch 150 is turned off, and the operation of the drain pump 150 is stopped.

When the drainage switch 150 is turned off and the drainage pump 300 is stopped at the atmospheric water level of FIG. 5B, the operation indicator lamp 170 stops, for example, a blue blinking drainage operation indication and displays a green normal operation indication. Is done.

After the drainage of the wastewater tank 200 is completed, when the wastewater flows into the wastewater tank 200 and rises to the drainage level of FIG. 5(c), the float assembly 140 rises again and the drain switch 150 is turned on. And the drainage pump 300 is operated so that the drainage proceeds to the atmospheric level of FIG. 5B.

As described above, when the drainage level sensor 100 according to the present invention is in a normal drainage state, the drainage pump 300 is operated at the drainage level of FIG. 5C to proceed to the atmospheric level of FIG. 5B. .

On the other hand, if drainage does not proceed normally at the drainage level of FIG. 5C due to a failure of the drainage pump 300, a blockage of the discharge pipe 220, or other failure, the water level of the wastewater tank 200 is It rises above the drainage level in (c) of.

When the water level of the wastewater tank 200 rises above the drainage level of FIG. 5(c), it is possible to cause pollution or other large damage to the workplace due to overflow of wastewater.

When the drainage level sensor 100 according to the present invention is mounted on the wastewater tank 200, the water level of the wastewater tank 200 rises above the drainage level in FIG. 5(c) and rises to the position of the warning level float 142c. If so, the float assembly 140 rises third as shown in (e) of FIG. 5 due to the additional buoyancy generated as the warning water level float 142c is submerged.

When the float assembly 130 is raised for the third time, the magnet 163 of the warning switch 160 is attached to the warning operation member 147b of the second stem 146, and the warning switch 160 is turned on, Accordingly, the warning means is operated by the control circuit to notify the manager of the occurrence of a drainage abnormality by generating an alarm sound or sending a warning message.

After recognizing the occurrence of drainage abnormality due to the operation of the warning means, the manager prevents damage due to overflow of wastewater by blocking the inflow of additional wastewater into the wastewater tank 200, and inspects and inspects each part including the drainage pump 300. Repair and take other measures necessary for normal operation of drainage.

When the warning switch 160 is turned on and the alarm means operates, the operation indication lamp 170 displays a warning operation, and the warning operation indication may be a state in which the operation indication lamp 170 flashes red.

Although the invention made by the present inventor has been described in detail according to the above embodiment, the invention is not limited to the above embodiment, and can be changed in various ways without departing from the gist of the invention.

100: drainage level sensor
110: main body
120: control tube
130: connection plate
140: float assembly
150: drain switch
160: warning switch
170: operation indicator lamp

Claims (5)

The cylindrical body 110 with the upper end sealed;
An adjustment tube 120 provided under the main body 110;
A connection plate 130 installed on the control tube 120 to allow position adjustment in the vertical direction;
The upper part is inserted into the inside of the control pipe 120 and the inside of the main body 110, and the lower part protrudes to the lower part of the control pipe 120, and the drain switch 150 and the warning while ascending and descending according to the water level of the wastewater tank 200 Float assembly 140 actuating switch 160;
A drain switch 150 installed in the lower part of the main body 110 and operating the drain pump 300 installed in the discharge pipe 220 of the wastewater tank 200;
It is installed above the drain switch 150 inside the main body 110, and includes a warning switch 160 for operating an alarm means for alarming the abnormal drainage operation,
It is installed on one side of the outer circumference of the main body 110, and includes an operation indicator lamp 170 that displays the operation state of the drain pump and the operation state of the warning means,
A plurality of ring-shaped fastening grooves 121 are formed in the vertical direction on the outer periphery of the control tube 120,
A control tube fastening part 132 fastened to any one of a plurality of ring-type fastening grooves 121 of the control tube 120 is provided on the upper end of the wastewater tank fastening part 131 of the connection plate 130,
The float assembly 140,
A first stem 141 whose upper end is inserted into the interior of the control tube 120;
An atmospheric water level float (142a) installed at the lower end of the first stem (141);
A drainage level float (142b) installed above the atmospheric level float (142a) of the first stem (141);
Warning water level float (142c) installed above the drainage level float (142b) of the first stem (141);
A finishing disk 143 installed on the upper end of the first stem 141 inside the control tube 120;
A spring support 144 installed under the finishing disk 143 of the first stem 141;
Compression spring 145 installed between the finishing disk 143 and the spring support 144;
A second stem 146 installed on the top of the finishing disk 143;
A drainage operation member (147a) installed to be movable in the vertical direction on the upper outer periphery of the second stem 146;
Includes; warning operation member (147b) installed on the upper portion of the drain operation member (147a) of the outer periphery of the second stem (146),
The drain switch 150 has an elastic switch piece 152 for operating a switch button on the switch body 151, and a magnet 153 is fixedly installed at the inner tip of the elastic switch piece 152,
The warning switch 160 is provided with an elastic switch piece 162 for operating the switch button on the switch body 161, and the magnet 163 is fixedly installed at the inner tip of the elastic switch piece 162;
An elevation guide pipe 111 for guiding the elevation of the drainage operation member 147a and the warning operation member 147b of the float assembly 140 is installed in the lower center of the body 110,
The drainage operation member 147a of the float assembly 140 is installed so as to be able to move up and down between the lower stopper 148a and the upper stopper 148b installed on the second stem 146,
In the standby operation indication, the operation indication lamp 170 is lit green,
The drainage operation indication is a state in which the operation indication lamp 170 flashes in blue,
Drainage level sensor, characterized in that when the warning switch 160 is turned on, an alarm sound or a warning message is sent to notify the administrator of the occurrence of a drainage abnormality. delete delete delete delete

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