KR100917650B1 - Automatic gate - Google Patents

Abstract

The present invention is installed at the inlet of the drain pipe connecting passage that passes through the bank wall of the river flowing across the city center to prevent the intrusion into the drain pipe through the normal to prevent the intrusion into the drain pipe through the various life flow at the same time as the zoom It prevents odors and pollutants from the wastewater to be discharged to the outside, and rotates by the force generated by the fluctuation of water inflow into the drainage channel such as heavy rains, and opens the connection passage to automatically adjust the water level. The automatic door is used to reduce various damages caused by flooding of rivers,

At the same time, the upper end of the automatic door is connected to the hinge bracket installed in the upper structure of the drain pipe connecting passage through the bank wall of the river using a separate connecting bar so that the first hinge on the upper side and the second hinge on the lower side are formed. 1 By installing and installing a hydraulic cylinder between the hinge part and the automatic door,

When the water level in the drain pipe is usually high, the automatic door is opened around the first hinge of the upper side, so that the automatic door can be easily opened even if a small internal pressure is applied.

When the automatic door is forcibly opened and closed by using the hydraulic cylinder in case of emergency, the automatic door can be easily opened around the second hinge on the lower side to make the operation very smooth and accurate,

The hydraulic cylinder and the piston rod are covered with a cover body having a special structure so that they cannot be seen from the outside, so that the exterior is beautiful and at the same time prevents the damage of the hydraulic cylinder without damaging the lifting and lowering of the automatic door. There are main features.

Description

Automatic gate

The present invention is installed at the inlet of the drain pipe connecting passage that passes through the bank wall of the river flowing across the city center to prevent the intrusion into the drain pipe through the normal to prevent the intrusion into the drain pipe through the various life flow at the same time as the zoom It prevents the odors and pollutants from the waste water to be discharged to the outside, and it is rotated by the force generated by the fluctuation of the inflow of water flowing into the drainage, such as during heavy rains. The present invention relates to an automatic door used to reduce various damages caused by flooding of rivers.

In general, in the case of a river flowing across the city center, a connecting passage is formed on the dike wall to communicate with a drain pipe through which various living and waste water flows, which is always open.

Therefore, since the person can easily enter the drain pipe through the connection passage may be provided to the place and the movement passage of various crimes.

And through the connecting passage of the odor generated in the living wastewater and wastewater in the various drainage pipes are discharged to the outside of the impression of passers-by, of course,

Various pests and pathogens propagated in domestic wastewater and wastewater were discharged to the outside through mobile passages, causing various diseases.

In order to solve this problem, the connection passage entrance is normally sealed to the drainage pipe passage inlet through the bank wall of the river, and in case of emergency, the connection passage inlet is rotated by the force generated by the fluctuation of water inflow. By installing automatic doors that are configured to open,

Normally, the entrance of the connecting passage is blocked so that no person can enter the drain.

Odors and pollutants blowing out from various household waste and wastewater flowing into the drain pipe are blocked.

Various pests and pathogens propagated from domestic waste and wastewater are not discharged to the outside through mobile passages, so that a clean environment is created to reduce the risk of various diseases.

In case of an emergency such as heavy rainfall, the automatic door is rotated by the force generated by the fluctuations in the amount of water flowing into the river or the drainage channel, and the entrance of the connecting passage is opened to automatically control the water level to reduce the damage caused by the flooding of the river. .

However, such conventional automatic doors have a disadvantage in that the automatic door cannot be opened arbitrarily despite the need to selectively open and close the automatic door according to various needs such as observation of the automatic door itself or the internal condition of the drain pipe, cleaning and maintenance.

In this regard, those configured to selectively open and close automatic doors using hydraulic cylinders were also proposed.

In addition, almost all of them did not have smooth operation of opening and closing the automatic door by the hydraulic cylinder due to problems in the installation structure of the automatic door and the hydraulic cylinder.

The present invention has been made to solve the above problems,

Normally, the entrance of the connecting passage is blocked to prevent people from entering the drainage pipe, and at the same time, the odors and pollutants from the various living wastes and wastewater flowing into the drainage pipes and various pests or pathogens from them are not discharged to the outside. Giving,

When there is a large amount of water flowing into the drainage channel, the automatic door rotates to open the connection passage inlet and drain the water.

On the contrary, the purpose of preventing water from flowing back into the drainage channel and preventing the flooding of roads and houses located above the drainage path is basically achieved, as in the case of heavy rainfall, when the river level rises.

The most distinctive feature is that the upper hinge of the automatic door is connected to the hinge bracket installed on the upper structure of the drain pipe connecting passage through the bank wall of the river using a separate connecting bar so that the upper first hinge and the lower second hinge are formed. And at the same time by installing the hydraulic cylinder in a special structure between the first hinge portion and the automatic door,

When the water level in the drain pipe is usually high, the automatic door is opened around the first hinge of the upper side, so that the automatic door can be easily opened even if a small internal pressure is applied.

When the automatic door is forcibly opened and closed by using the hydraulic cylinder in case of emergency, the automatic door can be easily opened around the second hinge on the lower side to make the operation very smooth and accurate,

The high quality that the hydraulic cylinder and the piston rod is covered with a cover body having a special structure so that it can be seen from the outside, and the appearance is beautiful and at the same time prevents the damage of the hydraulic cylinder without damaging the lifting and lowering of the automatic door at all. Its main purpose is to provide high quality automatic doors.

Another object of the present invention is to further install the water level measuring device and the water level measuring sensor of a special structure, the automatic door operator directly checks the opening state and the water level measurement value displayed on the control panel of the control room installed at a long distance and more efficiently water management It is to provide a high quality high quality automatic door that can do.

The present invention for achieving the above object,

The top of the automatic door is connected to the hinge bracket installed on the upper structure of the inlet of the drain pipe connecting passage through the bank wall of the river,

The upper end of the connecting bar is coupled to the first hinge hinge bracket,

The bottom of the connection bar is coupled to the second hinge of the top of the automatic door,

The first hinge is coupled to the rear end of the hydraulic cylinder installed in conjunction with the hydraulic generating device and the control panel of the control room, and the piston rod front end of the hydraulic cylinder is made by combining the third hinge at the rear end between the fourth hinge coupled to the automatic door. have.

Another feature of the present invention comprises a cover body that can cover the hydraulic cylinder and the piston rod to prevent them from being exposed to the outside,

The cover body is separated into a first cover body and a second cover body so that the first cover body is fixed to the hydraulic cylinder and the second cover body is fixed to the piston rod end.

Among these first and second cover bodies, the cover body of one side is inserted into the other side of the cover body, and is configured.

The present invention additionally has a special opening degree measuring device and a water level measuring sensor is installed so that the automatic door operator can manage the water more efficiently while directly checking the opening state and the water level measurement value displayed on the control panel of the remote control room. There is another feature to this.

The present invention prevents people from invading into the drainage pipes at the same time by preventing the inlet of the connecting passage, and at the same time, the various odors and pollutants from the wastewater and wastewater flowing into the drainage pipes and various pests or pathogens propagated therefrom are discharged to the outside. To ensure that

When there is a large amount of water flowing into the drainage channel, the automatic door rotates to open the connection passage inlet and drain the water.

On the contrary, the basic purpose of maintaining the closed state by preventing the inflow of water into the drainage channel and preventing the flooding of roads and houses located in the upper part of the drainage drainage is as a matter of course.

In addition to this, when the water level in the drain pipe is increased, the automatic door is opened based on the first hinge on the upper side instead of the second hinge on the lower side.

In addition, when forcibly opening and closing the automatic door by using the hydraulic cylinder in an emergency, the hydraulic cylinder is connected to a special structure has the advantage that the automatic door is opened easily around the second hinge of the lower side.

On the other hand, the hydraulic cylinder and the piston rod are covered with a cover body having a special structure so that they cannot be seen from the outside, which not only looks beautiful but also fundamentally prevents the hydraulic cylinder from being damaged without causing any trouble to the lifting and lowering of the automatic door. There is this.

In addition, when opening and closing the automatic door while forcibly raising and lowering the automatic door by operating the hydraulic cylinder, it is operated at the same time, and the opening degree measuring device is installed to measure the automatic door opening and closing rate. It is easy to control while checking in, so there is an advantage to manage water more efficiently.

Meanwhile, the water level sensor connected to the control panel is fixedly installed on the inner side (drainage side) and the outer side (river) of the automatic door, and the level value detected by these level sensors is displayed on the remote control panel. In addition to being able to check in the control room, the automatic door can be controlled manually or can be easily controlled automatically by manipulating the set value, which also has the advantage of more efficient water management.

As a result, the present invention is a very innovative invention that is easy to install and use, smooth to operate, very convenient to maintain, and almost without any trouble, and can be used safely and conveniently for a long time.

Hereinafter, an embodiment of the present invention will be described in more detail based on the accompanying drawings, FIGS. 1A to 6B.

The present invention is as shown in the accompanying drawings, Figures 1a to 1c and 2 to 3d,

The upper end of the automatic door (10) is connected to the hinge bracket (20) installed in the upper structure of the inlet (2a) of the inlet (2a) of the connecting passage through the bank wall of the river (1) is connected to the connection bar 30,

The upper end of the connecting bar 30 is coupled to the hinge bracket 20, the first hinge 31,

The lower end of the connection bar 30 is coupled to the second hinge 32 at the upper end of the automatic door 10.

The rear end of the hydraulic cylinder 40 installed in connection with the hydraulic generator 310 and the control panel 320 of the control room 300 is coupled to the first hinge 31 coupling part.

The front end of the piston rod 41 of the hydraulic cylinder 40 is coupled to the third hinge 42 at the rear end of the operation interval 50 coupled to the fourth hinge 51 to the automatic door.

Hydraulic pressure of the said hydraulic cylinder 40 is normally released.

On the other hand, in this invention, the said hydraulic cylinder 40 and the piston rod 41 are covered with the cover body 60 so that it may not be seen from the outside.

The cover body 60 is formed by separating the first cover body 61 and the second cover body 62. The first cover body 61 is fixed to the hydraulic cylinder 40 and the second cover body ( 62 is fixedly installed at the tip of the piston rod 41, one of the first and second cover bodies 61 and 62 is inserted into the other, but in the present invention, the lower end of the first cover body 61 is The upper end of the second cover body 62 is inserted.

On the other hand, the present invention is an opening degree measurement connected to the control panel 320 of the control room 300 at one end of the second hinge 32 of the connecting bar 30 as shown in Figure 4 and 4a to 4b of the accompanying drawings. The device 100 is fixedly installed and one side thereof is installed in connection with the automatic door 10 to measure the opening state (opening and closing angle) of the automatic door 10 when opening and closing the automatic door 10, and to the control panel 320 installed at a long distance. It is configured to display in text, symbol or graph form.

Wherein the opening degree measuring device 100 is integrally bolted to the upper side of the knob flange 120, the lower end is fixed to the automatic door 10 to the knob body 110 is inserted into the outer surface of one end of the second hinge (32). (130) fasten,

A plurality of permanent magnets (magnetics) 33 are inserted into and installed inside the outer surface of the second hinge 32 and connected to the control panel 320 and the wire 321 inside the inner surface of the knob body 110. Two reed switches 111, i.e. each reed switch 111a, 111b, 111c, 111d, 111e, 111f, are provided at regular intervals,

Reed switches 111a, 111b, 111c, respectively provided in the knob body 110, which rotate at the same time by the rotation of the knob flange 120, the lower end of which is fixed to the automatic door 10 when the automatic door 10 is opened and closed. Opening state of the automatic door 10 on the control panel 320 while being turned on by the suction force of the permanent magnet 33 as the 111d, 111e, and 111f are adjacent to the permanent magnet 33 provided in the second hinge 32. It is configured to display.

In addition, the present invention is the water level measurement sensor 200 is connected to the control panel 320 on the inner side (drainage side) and the outer side (river) of the automatic door 10 as shown in Figure 4 and 6a to 6b of the accompanying drawings, respectively. Fixed installation and display the water level value detected by the water level measurement sensor 200 to the control panel 320 installed at a remote location to operate the hydraulic cylinder 40 manually or automatically to open and close the automatic door (10) It is configured to be

Here, the water level measurement sensor 200 is embedded in the automatic door installation structure and the front fixed box 210 is coupled to the cover body 211 is provided with a water distribution hole (211a) bolt 212,

Floating body 220, which is lifted and lowered by buoyancy of water flowing into the fixed box 210 while being inserted into the guide rod 221 fixedly installed in the fixed box 210 and the permanent magnet 222 is provided on the inner surface. )Wow,

The guide rod 221 is installed inside and connected to the control panel 320 and the electric wire 322 to increase the water level while being turned on / off by the suction force due to the proximity of the permanent magnet 222 when the lifting and lowering It is composed of a float switch including a reed switch 230 to sense and display on the control panel (320).

The installation position of the water level measurement sensor 200 is installed at the most suitable height depending on the site conditions and can be installed in a plurality, and may be installed on a vertical or inclined surface depending on the installation place, but the guide rod ( 221 is installed vertically so that the subsidiary body 220 is fixed to be able to measure the water level while moving up and down vertically along the guide rod 221.

The unexplained reference numeral 11 is index rubber.

Referring to the operating state of the present invention configured as described above are as follows.

First, the automatic door 10 of the present invention is installed at the inlet port 2a of the drain pipe 2 passing through the bank wall surface of the river 1, but releases the hydraulic pressure.

Then, the state in which the lower end of the automatic door 10 normally closes the connection passage inlet 2a by its own weight is continuously maintained.

Therefore, not only a person cannot enter the drain pipe 2 through the connecting passage inlet 2a,

Odors and pollutants from the various household waste and wastewater flowing into the drain pipe 2 are not discharged to the outside.

On the other hand, when a large amount of water is introduced into the drain pipe (2) as shown in Figure 2 when the water level is increased, the internal pressure acts on the lower end of the automatic door 10 by the pressure of the water, in this case the upper end of the automatic door 10 As the automatic door 10 is lifted around the first hinge 31 located much higher than the second hinge 32 because it is connected to the hinge bracket 20 by using the connecting bar 30. The connecting passage inlet 2a is automatically opened.

Therefore, even if a smaller amount of water flows into the internal pressure is small, the automatic door 10 is easily opened.

As the automatic door 10 is raised around the first hinge 31 as described above, the connection passage inlet 2a is automatically opened to be discharged into the river, and the water level is lowered again. Seal 2a).

At this time, when the automatic door 10 is opened and closed as described above, a piece of wood, a piece of grass or a boulder may be caught in the door gap. In such a situation, the automatic door 10 is connected to the inlet 2a of the drain pipe 2. In case of an emergency in which the water level of the river (1) becomes higher than the water level inside the drain pipe (2), the water flows back into the drain pipe (2) inside the drain pipe (2), causing flooding of roads and houses. Can also be.

Therefore, when the automatic door 10 is opened and closed as described above, when a piece of wood or a piece of grass or a boulder is put into the door gap, the hydraulic generator 310 is operated to operate the piston rod 41 of the hydraulic cylinder 40. Retract the hydraulic cylinder 40 into the body.

Then, as shown in FIG. 3B, the rear end of the operation period 50 is pulled while the third hinge 42, to which the front end of the piston rod 41 is coupled, is also retracted, so that the operation between the operation and the fourth hinge 51 is performed. The tip of the lower portion 50 descends and comes into close contact with the automatic door 10.

In this case, the first hinge 31, the second hinge 32, and the third hinge 42 form a substantially straight line in the case of FIG. 3A, but are largely opened in a triangular form in FIG. 3B.

When the piston rod 41 continues to retreat in such a state, as shown in FIGS. 3C and 3D, the lower end of the automatic door 10 is easily lifted about the second hinge 32, forcibly connecting the drain pipe 2. The inlet 2a is open.

Therefore, when a piece of wood or a piece of grass or boulder is fitted in the door gap of the automatic door (10) by operating the hydraulic cylinder 40 forcibly elevating the automatic door (10) and then remove these pieces of wood or piece of grass or boulder By removing the gap, it can prevent the flow of water from the stream back into the gap in an emergency.

In the present invention, the automatic door 10 is forcibly lifted even during normal operation to perform the observation, cleaning, and maintenance of the internal state of the automatic door 10 or the drain pipe 2.

In addition, in the present invention, since the hydraulic cylinder 40 and the piston rod 41 are covered with a cover body 60 formed separately from the first cover body 61 and the second cover body 62 so as not to be seen from the outside,

When the automatic door 10 is raised and lowered by using the hydraulic cylinder 40, at the same time as the piston rod 41 emerges, the lower end of the first cover body 61 emerges inside the upper end of the second cover body 62. While the length of the cover body 60 is automatically adjusted, without damaging the lifting and lowering of the automatic door 10, the damage of the hydraulic cylinder 40 is fundamentally prevented as well as beautiful in appearance.

On the other hand, the present invention measures the opening and closing of the automatic door 10 while operating at the same time when opening and closing the automatic door 10 while forcibly lifting and lowering the automatic door 10 by operating the hydraulic cylinder 40.

That is, when the lower end of the automatic door 10 is raised and lowered around the second hinge 32, the knob flange 120 having the lower end fixed to the automatic door 10 rotates and the knob body 110 rotates.

Then, the plurality of reed switches 111 provided in the knob body 110, that is, the positions of the respective reed switches 111a, 111b, 111c, 111d, 111e, and 111f are changed and the second hinge ( At the same time as the permanent magnet 33 provided at 32, and turned on by the suction force of the permanent magnet 33, these reed switches 111a, 111b, 111c, 111d, 111e, 111f and electric wires are connected. The opening state of the automatic door 10 is displayed on the control panel 320 installed by 321 in a text, symbol, or graph form.

Therefore, the automatic door operator can easily control the opening and closing degree of the automatic door 10 in the control room 300 according to the opening degree measurement value measured by the opening degree measurement device 100 of the present invention, so that the water management can be more efficiently. can do.

In addition, the present invention is fixed to the water level measurement sensor 200 connected to the control panel 320 on the inner side (drainage pipe) and the outer side (river) of the automatic door 10 is detected by the water level measurement sensor 200 The level value is displayed on the control panel 320 installed at a long distance.

That is, through the water distribution hole (211a) provided in the cover body 211 coupled to the bolt 212 in front of the fixed box 210 constituting each of the water level measurement sensor 200 as a float switch ( When the water is introduced into the 210, the subsidiary body 220 is moved up and down under the guidance of the guide rod 221. At this time, the permanent magnet 222 is provided on the inner surface of the subsidiary body 220. The level of the water level is detected as the reed switch 230 provided inside the guide rod 221 is turned on by suction force due to the proximity of 222, and the detected level is connected to the reed switch 230 and the wire 322. It is transmitted to and displayed on the control panel 320.

Therefore, the automatic door operator can check the level measurement value measured by each of the water level measurement sensor 200 in the control room 300, as well as control the automatic door 10 manually or easily by automatically controlling the set value. This can also make water management more efficient.

The automatic door 10 of the present invention may be installed and used in the connection passage of the drain pipe 2 as described above, as well as may be installed and used to open and close the automatic door 10 upstream of the river (1).

That is, when the measurement value detected by the water level measurement sensor 200 in the rain is lower than the water level of the upstream lower than the hydraulic cylinder 40 automatically operates to open the automatic door 10,

When the water level in the downstream is higher than the upstream water level it is also possible to control the water management such as forcibly closing the automatic door 10 by operating the hydraulic cylinder (40).

Therefore, the automatic door 10 of the present invention can be conveniently used without restriction depending on the installation place.

Figures 1a, 1b, 1c is an embodiment of the present invention,

Figure 1a is a side view of the installation state.

Figure 1b is a front view showing the main configuration.

Figure 1c is a plan view showing a main configuration

Figure 2 is a side view of the state in which the automatic door is opened by the internal pressure of the water inside the drain pipe as usual.

3a, 3b, 3c, 3d is a state diagram in which the automatic door of the present invention is opened by the operation of the hydraulic cylinder,

Figure 3a is a state diagram before the operation of the hydraulic cylinder.

Figure 3b is a state in which the operation between the operation by the operation of the hydraulic cylinder.

Figure 3c is a state in which the automatic door is forcibly opened by the operation of the hydraulic cylinder.

3d is a state in which the automatic door is completely opened by the operation of the hydraulic cylinder.

Figure 4 is a state diagram further configured the opening degree measuring device and the water level measuring sensor as the present invention.

5A and 5B are diagrams showing one configuration of the opening degree measuring apparatus applied to the present invention;

5A is a front view.

Figure 5b is a side cross-sectional view.

6A and 6B are diagrams illustrating one configuration of a water level sensor applied to the present invention.

Figure 6a is a front view of some cut state.

Figure 6b is a side view of some cut state.

♣ Explanation of symbols for the main parts of the drawing

1: river 2: drain pipe

2a: Entrance 10: Automatic door

20: Hinge bracket 30: Connecting bar

31: First hinge 32: Second hinge

33,222: permanent magnet 40: hydraulic cylinder

41: piston rod 42: third hinge

50: Between operation 51: Fourth hinge

60,211: cover body 61: first cover body

62: second cover body 100: opening degree measuring device

110: knob body 111, 230: lead switch

120: knob flange 130,212: bolt

200: water level sensor 210: fixed box

211a: water distribution hole 220: part

221: guide rod 300: control room

310: hydraulic generator 320: control panel

321,322: wire

Claims (7)

While connecting the upper end of the automatic door (10) to the hinge bracket (20) installed in the upper structure of the inlet (2a) of the drainage pipe (2) connecting passage passing through the bank wall of the river (1) by a separate connecting bar (30), The upper end of the connecting bar 30 is coupled to the hinge bracket 20, the first hinge 31, The lower end of the connection bar 30 is coupled to the second hinge 32 to the upper end of the automatic door 10, The first hinge 31 is coupled to the rear end of the hydraulic cylinder (40) installed in conjunction with the hydraulic generator 310 and the control panel 320 of the control chamber 300 and the end of the piston rod 41 of the hydraulic cylinder (40) Automatic door, characterized in that made by combining the third hinge (42) to the rear end of the operation section 50 is coupled to the fourth hinge (51) to the automatic door (10). The method of claim 1, Automatic door, characterized in that the hydraulic cylinder (40) and the piston rod (41) to the upper side to cover the cover body 60 so that they are not exposed to the outside. The method of claim 2, The cover body 60 is separated into a first cover body 61 and a second cover body 62 so that the first cover body 61 is fixedly installed on the hydraulic cylinder 40 and the second cover body 62. Is fixed to the piston rod (41) end, An automatic door comprising a cover body on one side of the first and second cover bodies (61) (62) inserted into the other cover body. The method of claim 1, The opening degree measurement apparatus 100 installed in connection with the control panel 320 of the control room 300 is fixedly installed at one side end of the second hinge 32 of the connection bar 30, and one side end thereof is connected to the automatic door 10. Automatic door characterized in that it is configured to measure the opening and closing degree (opening and closing angle) of the automatic door 10 when opening and closing the automatic door 10 and to display it in a character, symbol or graph form on the control panel 320 installed at a long distance. The method of claim 4, wherein The opening degree measuring device 100 is The upper end of the knob flange 120, the lower end of which is fixed to the automatic door 10, is integrally bolted to the knob body 110 inserted into one outer end of the second hinge 32, A plurality of permanent magnets (magnetics) 33 are inserted into and installed inside the outer surface of the second hinge 32 and connected to the inner surface of the knob body 110 by a control panel 320 and an electric wire 321. Two reed switches 111a, 111b, 111c, 111d, 111e, and 111f at regular intervals, Reed switch 111a, 111b, 111c, 111d provided in the knob body 110 which rotates simultaneously by the rotation of the knob flange 120 having the lower end fixed to the automatic door 10 when the automatic door 10 is opened and closed. The opening state of the automatic door 10 to the control panel 320 is turned on by the suction force of the permanent magnet 33 as the (111e) and 111f are close to the permanent magnet 33 provided in the second hinge 32. Automatic door, characterized in that configured to display. The method of claim 1, The water level measurement sensor 200 connected to the control panel 320 of the control room 300 is fixedly installed on the inner side (drainage side) and the outer side (river) of the automatic door 10 and sensed by the water level measurement sensors 200. Automatic door, characterized in that configured to be able to open and close the automatic door (10) by operating the hydraulic cylinder (40) by giving the displayed water level to the control panel (320) installed in the remote. The method of claim 6, The water level measurement sensor 200 The fixed box 210 is installed in the automatic door installation structure and the front cover body 211 is provided with a water distribution hole (211a) is coupled to the bolt 212, Floating body 220 which is lifted and lowered by buoyancy of water flowing into the fixed box 210 while being inserted into the guide rod 221 fixed inside the fixed box 210 and the permanent magnet 222 is provided on the inner surface. Wow, The guide rod 221 is installed inside and connected to the control panel 320 and the wire 322, the subsidiary body 220 is turned on / off by the suction force due to the proximity of the permanent magnet 222 during the ascent, descent Automatic door, characterized in that consisting of a float switch comprising a reed switch 230 to detect and display on the control panel (320).

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