KR200173852Y1 - Water-level sensing equipment - Google Patents

Abstract

The present invention relates to a water level sensing device, and to provide a water level sensing device in which a switch is installed in a waterproof housing on the surface of the water so as to eliminate the risk of flooding and to simplify the setting of the adjustment level.

The water level detecting device is a float that moves up and down according to the water level change in the reservoir, a rod that guides the up and down movement of the float and performs the up and down movement, and if necessary, is connected to the lower side of the rod to increase the rod length. An auxiliary rod, a stator which is installed at a predetermined position of the rod to limit the up / down movement range of the float and moves the rod like the float when it comes in contact with the float, and a rod holder which prevents the rod from moving laterally in the water; Is installed away from the water surface, and has a contact portion electrically connected to the drainage (or water supply) device, and receives the up / down movement of the rod to intermittently contact the contact portion to selectively transmit an electrical signal to the drainage (or water supply) device. It comprises a switch box having a bar and a housing in which the switch box is accommodated.

The switch box is constructed in a waterproof housing and mounted on the surface of the water so that there is no risk of flooding into the switch box, the rod holders are adjustable in length, and the stators are mutually adjustable and the rod can be further extended by the secondary rod. As a result, the range of choice of setting water level is wider, and the level is easy to adjust.

Description

Water-level sensing equipment

The present invention relates to a water level detection device that controls the operation of the drainage device (or water supply) according to the change of the water level to maintain an appropriate water level. Particularly, the limit width of the highest / lowest water level that can be detected is large, and It is easy to adjust the minimum water level and switch box is installed in the switch box in the device to prevent malfunction and malfunction due to flooding. It relates to a water level sensor which is waterproofed to the housing and installed completely away from the surface of the water.

Currently, various devices are used as a sensing device for maintaining an appropriate level in a means of storing water such as a reservoir tank. One example is an apparatus using an electrical sensor.

When the water level reaches the lower limit position, the sensor attached to the lower limit position transmits the operation signal to the water supply device and drives it to raise the water level, and the water supply is continued. It is a device that maintains the water level by stopping the operation of the water supply device by transmitting the stop signal from the sensor attached to the upper limit to the water supply device. This device is inconvenient because the sensor must be removed and re-installed in the water tank when the set water level is changed at the upper / lower limit. Especially, when the sensor is installed in the water, there is a risk of failure or malfunction due to the inundation into the sensor. there was.

It is an object of the present invention to provide a water level sensing device that can be set without the risk of flooding in the switch, and to easily set the level of detection in order to improve this problem with the conventional water level sensing device.

The water level detecting device is a float that moves up and down according to the water level change in the reservoir, a rod that guides the up and down movement of the float and performs the up and down movement, and if necessary, is connected to the lower side of the rod to increase the rod length. The auxiliary rod, which is installed at a predetermined position of the rod, limits the up / down movement range of the float, and prevents the rod from moving laterally in the water, and the stator for allowing the rod to move with the float when it comes in contact with the float. Has a rod holder and a contact part which is installed away from the water surface and electrically connected to the water supply (or drainage) device, and receives the up / down movement of the rod to intermittently contact the contact part to selectively drain the electric signal (or water supply). A switch box having a switching bar sent to the device and a housing in which the switch box is housed.

In addition, since the switch box is constructed in a waterproof housing and installed on the water surface, there is no fear of flooding. In addition, the rod holder is adjustable in length, the stator can be mutually adjustable and the rod length can be further extended by the auxiliary rod can easily adjust the setting level.

Figure 1a is a side view of the water level detection device according to the present invention

Figure 1b is a rear view from the rear of the water level sensor according to the present invention

Figure 1c is a perspective view showing the inclined state that the first rod holder and the second rod holder of the water level sensing device according to the present invention inclined

Figure 2 is a rear cross-sectional view of the water level sensor according to the present invention

Figure 3a is a perspective view of the connector portion and the rod one side of the water level sensor according to the present invention obliquely

Figure 3b is a cross-sectional view showing a state in which the rod, the connector portion and the bellows coupled to the lower case of the water level sensor according to the present invention

Figure 4a, b is a cross-sectional view and a perspective view showing a state in which the connector portion of the water level sensor according to the present invention is coupled to the bellows through the lower case inlet

Figure 4c is a perspective view showing a combined appearance of the lever and the fixed piece fixed to the upper bellows of the water level sensor according to the present invention

Figure 5a, b is a perspective view and a plan view of a switch box of the water level sensor according to the present invention

FIG. 5C is a simplified illustration of the principal connection of FIG. 5A. FIG.

<Brief description of the main parts of the drawings>

17: lever 10: housing

10-1: Upper Case 10-2: Lower Case

15: Bellows 16: Snap Ring

18: fixed piece 20: switch box

25: switching bar 25-1: protrusion plate for connection

25-2: Ω-type elastic plate 41, 42, 43: first, second, third lead connection portion

51, 52: first and second contact portions 61, 62: first and second fixing portions

100: load 100-1: secondary load

105: float 107,108: upper and lower stator

110: connector 110-1: connector

110-2: connector groove 120: housing fixing plate

130: rod guide 130-3: rod groove

150: retaining pin

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In particular, among the various embodiments of the present invention will be described as a system for preventing the rise of the water level is driven by the drainage device when the water level detection device is connected to the drainage device reaches the upper limit set water level in the reservoir.

1A, 1B, 1C, and 2, the water level sensing device of the present invention includes a switch box 20, a rod 100, and a connector unit 110 in which stators 107 and 108 and floats 105 are installed. , The housing fixing plate 120 and the rod holder 130-1.

The switch box 20 is installed in the housing 10, and the housing is mounted on the housing fixing plate 120 and fixed with bolts. The housing fixing plate 120 is L-shaped, and as shown in FIG. 1B, two bolt fastening holes 120-3 and a rib (RIB) 120 for reinforcing the housing fixing plate are provided at the top of the rear surface. 5) is formed in the lower part of each of the two bolt fastening holes An annular clamp support ring 120-2 is formed to cut a portion of the fixing plate and protrude toward the front of the housing fixing plate in order to support the clamp for connection with the water storage pipe that emerges above the water surface.

As shown in Figure 1a and 1b rod rod 130 is installed on the bottom surface 120-1 of the housing fixing plate 120 to fix the rod. The rod holder 130 has a two-stage structure, and includes a first rod fixing rod 130-1 at the upper portion and a second rod fixing rod 130-2 at the lower portion.

A rod groove 130-3 is formed in the first rod fixing rod 130-1 on the upper side, and a fixing bolt 130-6 is provided on the upper side of the second rod fixing rod 130-2 on the lower side. The first and second rod guides by connecting the first and second rod guides by tightening the front and the rear of the guide by the nut 130-7 additionally provided by inserting the rod groove into the rod groove. By adjusting the length of the rod holder 130 is enabled. If the nut is a butterfly nut can be tightened by hand without a separate tightening equipment is more convenient. In addition, as shown in Figure 1c is provided with a coupling reinforcing piece (130-5) that can be freely changed position along the first rod holder on the outside of the first rod holder to be positioned above the bolt when connecting the first and second rod holders Strengthen the connection.

A protrusion plate 130-4 protruding in parallel with the surface of the housing fixing plate bottom 120-1 is formed below the second rod holder 130-2, and the protrusion plate 130-4 A hole is formed so that the lower side of the long rod-shaped rod 100 is inserted to prevent the rod from moving laterally to the left / right side after rod insertion.

A female thread is formed in the lower surface of the rod 100, and a male thread is formed at one end if necessary. The length of the rod can be increased by connecting with the auxiliary rod (100-1).

The rod 100 is fitted with stators 107 and 108 for determining the upper and lower limit levels, and a float 105 is installed between the stators 107 and 108 to move up and down along the rod due to the water level change in the reservoir. At this time, when the float 105 contacts the stators 107 and 108, the rod moves in the same direction as the float movement. That is, when the float 105 contacts the upper stator 107, the rod 100 also rises when the float rises, and when the float 105 contacts the lower stator 108, the rod 100 descends.

The upper side of the rod is in the form of a tong-shaped protruding plate 100-1, as shown in Figure 3a, b and the hole (100-2) for fastening the pin 150 in the center of both protruding plate (100-1) Formed. The connector groove 110-2 formed at the lower side of the connector unit 110 is inserted between the protruding flat plates 100-1, and the center of the groove has a pin hole 110-3. The upper side is coupled by the pin 150.

The connector part 110 is inserted into the lower case inlet part 10-3 protruding from the lower case 10-2 in the form of a square pipe. The bellows 15 fixed by the snap ring 16 to the lower case inner protrusion 10-4 formed at the center of the lower case bottom has a bellows inner protrusion 15-1 having a circular concave groove. It accommodates the connector formed on the connector unit 110 above.

The hole 110-4 of the pin to which the connector 110 and the lower case inlet 10-3 is coupled may form a groove in the longitudinal direction so that the entire connector 110 may move up and down. As shown in Figs. 4A, 4B, and 4C, holes 15-2 are formed in the upper portion of the bellows 15. A rod-shaped lever 17 fitted vertically in the center of the fixing piece 18 installed inside the high bellows is led upward through the above-mentioned hole and connected to the connecting protrusion 25-1 of the switching bar 25. .

Figures 1a, 2 and 5a, 5b shows the switch box portion of the water level sensing device according to the present invention.

The switch box 20 is installed on the upper case 10-1 side of the housing 10, and forms an outer lead inlet 12 by forming a semi-circular groove at an abutting position on each side of the upper and lower sides of the housing 10. At this time, the space outside the conductive wire of the conductive wire inlet 12 is filled with a bushing 13 made of rubber material, and the upper case and the lower case are bonded by melting the contact surface by ultrasonic bonding so that the housing is completely waterproofed.

FIG. 5C schematically shows the switch box structure of FIG. 5A.

The switch box 20 is for connecting the third conductor connecting portion 42 connected to the external drainage through the conductor, the second conductor connecting portion 43 used as a common terminal, and other equipment (water supply device, etc.) if necessary. Up / down movement between the extra first wire connection part 41, the first and second contact parts 51 and 52 which refer to the other ends of the first and third wire connection parts 41 and 42, and the first and second contact parts. And a switching bar 25 which is selectively contacted, and a first fixing portion 61 of the switching bar that refers to the other end of the second lead connection portion. However, in the present embodiment, no wire is connected to the first wire connection part. Therefore, when the switching bar contacts the first contact portion 51, which is the other end of the first lead connection portion, the switch is turned off. That is, in the present embodiment, the first wire connection part and the first contact part may be omitted. But second When it is necessary to drive an external device (water supply device, etc.), the conductor of the second external device is connected to the first lead connecting portion, and the switching bar alternately drives the first and second contact parts while alternately driving the two devices.

The switching bar 25 has a rectangular long thin plate, a narrow connecting protrusion 25-1 that can be coupled to the groove of the lever 17 protruding from the side of the thin plate, and on one side of the thin plate. It is composed of a small Ω-shaped elastic plate 25-2 that is protruded and curved in a circle.

One side of the switching bar 25 is fixed to the first fixing part 61 and is installed between the first contact part 51 and the second contact part 52. The Ω-type elastic plate formed on the opposite side is also attached to the switch box body. It is fixed to form the switching bar second fixing portion 62. However, the first fixing part and the second fixing part have different horizontal heights.

The connecting protrusion 25-1 of the switching bar is coupled with the lever 17 to receive the up / down movement of the rod, and the switching bar connected to the protrusion plate 25-1 moves up and down, and the second contact portion ( 52) to turn the drain on and off. If the water supply device is connected to the first wire connection part, the switching bar alternately contacts the first and second contact parts and alternately drives the water supply / drainage device.

The Ω-type elastic plate 25-2 increases the speed of interruption of the switching bar and the contact portion by using the elastic force of the ring structure, and serves to further strengthen the contact state during contact.

Hereinafter, the operation of the water level detecting device of the present invention.

As the water surface rises, the float 105 rises and comes into contact with the upper stator 107, As the rod 100 rises together, the connector 110 connected to the rod is raised, and the connector bar pushes the bellows 15 to raise the connected lever 17 so that the switching bar 25 connected to the lever is moved to the second contact portion. Contact with 52. The switch is turned on and the drainage is activated so that the water level is lowered from the set upper limit level.

On the contrary, when the water surface comes down, the float 105 descends and comes into contact with the lower stator 108, and the rod 100 descends together to lower the connector unit 110 connected to the rod, and the connector unit lowers the bellows 15. By lowering the lever 17 connected downwards, the switching bar 25 connected to the lever is brought into contact with the first contact part 51.

As soon as the switch falls off the second contact, the drainage device ceases operation. At this time, if a second external device such as a water supply device is connected to the first wire connection part 41, the second external device is operated at the moment when the switching bar contacts the first contact part.

Therefore, the present invention simply adjusts the high and low water level by simply adjusting the rod holder and the stator, and if necessary, by connecting the auxiliary rod, the range of the adjustable water level becomes longer, and the switch box is completely fixed away from the water, Since the housing housing the switch box is completely waterproof, there is no risk that the switch may malfunction due to flooding and vibration, thereby providing a level sensing device with a more stable function.

Claims (12)

In the water level sensing device for detecting the water level in the reservoir, Float 105 which moves up and down in accordance with the change in the water level in the reservoir, A rod 100 for guiding the up and down movement of the float and performing up and down movement; If necessary, the secondary rod (100-1) connected to the lower side of the rod to increase the length of the rod, Stators 107 and 108 installed at a predetermined position of the rod to limit the up / down movement range of the float and to move the rod like the float when in contact with the float 105; A rod holder 130 for preventing the rod from moving in the lateral direction; A switch having a contact part which is installed away from the water surface and electrically connected to the drainage device, and which receives the up / down movement of the rod to intervene with the contact part and selectively sends an electric signal to the water supply device. With box 20, Level sensing device comprising a housing (10) in which the switch box (20) is accommodated. The method according to claim 1, The switch box 20 is a body made of an insulating material, A wire connection part (41, 42, 43) installed on the body to connect the wire drawn from the drainage device and the outside; A means for receiving the up / down movement of the rod and by the received up / down movement And a switching bar (25) for selectively interrupting the contact portion (52) provided at the other end of the lead connecting portion to selectively operate the drainage device. The method according to claim 2, The switching bar 25 is formed in a rectangular thin plate shape, Protruding one side to form a small Ω-type elastic plate 25-2 to be fixed to the body of the switch box 20 to form a first fixing portion 61, The other side is also fixed to the switch box body by varying the height and the first fixing portion to form a second fixing portion 62, One side of the switching bar can be moved up / down by the height difference of the first and second fixing parts, A water level sensing device characterized in that the intermittent operation is accelerated by the elastic force caused by the Ω-type structure when the contact part is interrupted. The method according to claim 1, The rod holder 130 is The first and second fixtures 130-1 and 130-2 are combined, The first rod fixing rod 130-1 is provided with a rod groove 130-3 extending in the longitudinal direction. The fixing bolt 130-6 is provided above the second rod holder 130-2, Insert the fixing bolts into the rod grooves and connect the first and second rod fixing rods by tightening them with nuts 130-7. The water level sensing device, characterized in that the length of the rod holder 130 can be changed by adjusting the position where the fixing bolt is inserted into the rod groove. The method according to claim 4, The rod holder has a coupling reinforcing piece (130-5) that can be moved freely from the first holder to be positioned on the fixing bolt (130-6) to reinforce the connecting portion when connecting the first and second rod guides Characteristic level sensing device. The method according to claim 4, The rod holder is a water level sensing device, characterized in that the nut tightening the fixing bolt (130-6) is a butterfly nut (130-7). The method according to claim 1, The stator (107, 108) is a water level detection device, characterized in that the mutual space can be adjusted. The method according to claim 1, The housing 20 is a water level detection device characterized in that the waterproof treatment. In the switch device A body made of an insulating material, first, second and third terminals 31, 32 and 33 forming a space for connecting to an external device on one side of the body; First, second, and third conductor connection portions 41, 42, and 43 installed at entrances of the terminals to connect with external devices; 1,2 contact parts 51 and 52 which protrude in parallel with one end of the first and third conductive line connecting parts and are positioned above and below, respectively; A switching bar 25 positioned between the first and second contacts and fixed by one side of the second wire connection part to selectively contact the first and second contacts; And a motion transmission means connected between the switching bar and the external motion generating device to transfer external motion to the switching bar and to move the switching bar up and down to allow selective contact between the switching bar and the two contact portions. The method according to claim 9, Switching device is characterized in that the switching bar (25) is formed in the form of a leaf spring. The method according to claim 9, The switching bar 25 forms a small Ω-type elastic plate 25-2 on one side to the body A switch device, characterized in that the switching bar is to maintain a quick contact and a firm contact by the elastic force when the switching bar selectively contacts between the contacts (51, 52). The method according to claim 9, The movement transmission means is provided with a protrusion plate (25-1) on the side of the switching bar, it characterized in that the transfer of the movement of the external exercise device.