KR19980068082U - Level Detector of Sedimentant Tank - Google Patents

Abstract

The present invention relates to an integrated level detection sensor that can simultaneously detect the high and low heads in a sedimentation tank containing sticky liquid material.

The present invention is a sediment tank (tank) level detector of a furnace thickener facility, the hollow body which is mounted through the flange and the liquid inlet pipe to facilitate detachment to the outer surface of the sediment tank bottom; A level control rubber plate is coupled to the upper portion of the body, and a plurality of circumferential grooves are formed on the upper portion of the rubber plate, and coupled to the body to position the level control rubber plate therein, and a plurality of air vent holes. Formed casing; A guide rod is mounted on the upper portion of the center of the casing and moves up and down inside the casing, and a contact plate mounted on the lower end of the guide rod, and detects high and low on the upper side and the one side. A guide tube equipped with a magnetic sensor capable of detecting a level of the guide rod which is raised and lowered proportionally according to the head of the liquid in the settling tank; And a control panel which is electrically connected to the sensor and receives a signal from each sensor to detect high and low heads in the sedimentation tank and to automatically control various devices connected to the sedimentation tank. To provide.

Description

Level Detector of Sedimentant Tank

The present invention relates to a level detector of a thickener settler tank, which is a water treatment facility installed in a furnace, and more specifically, high and low water head in a settler tank containing a sticky liquid substance. It relates to an integrated level detection sensor that can be detected.

In general, the gas containing dust generated in the blast furnace is cleaned by spraying high pressure water from a wet vibration damper. The dust generated in this process is stored in a large dust collecting storage tank, which is a water treatment storage device. In order to settle the sludge in the water, a sedimenting agent (a chemical for the purpose of sludge sediment having a characteristic of a sticky substance, a sedimenting agent or a polymer) is introduced.

A state in which a solid polymer is introduced into a dissolution tank (hereinafter referred to as a settling tank) and diluted with water is shown in FIG. It drives an agitator driving motor 12 in the settling tank 10 to mix the polymer 13a and water for a period of time, and then wets it through the settling transfer pump 11. It is supplied to a pond (not shown) that stores the water generated in the vibration suppressor.

In this process, the polymer 13a is introduced into the settling agent inlet 13 above the settling tank 10, and the agitator drive motor 12 is driven by the tank level switches 20a, 20b, 22a and 22c. Is started, and the impeller 12b is rotated along the shaft 12a to dissolve the solid polymer 13a and water introduced therein through dilution.

On the other hand, high and low level switches 20a and 20b of a float type coupled to a flange on one side of the settling tank 10 are settling tank 10. The polymer inside is made of a sticky substance due to the nature of the chemical, which prevents sensitive rise and fall along the liquid head in the level switch casing, causing it to stick and block the inlet pressure vessel, which does not match the actual head level. It is often repeated.

Another level switch different from the above is that the float guide shaft 22d is fixedly installed in the sedimentation tank 10 and the guide 22b and 22c 'are guided along the head level. When the position is located in the sensing units 22a and 22c by moving along), it is easy to cause malfunction as a method of detecting the head level.

However, the above level detection sensors have the following problems.

First, the polymer, which is a kind of sedimentation agent, becomes a sticky liquid as it is dissolved with water, so the level detection switch float should move up and down according to the head level. Due to the nature of the protop connection there is a problem of malfunction due to sticking.

Second, as a malfunction signal of the level detection signal, auxiliary equipments such as the pump 11 and the agitator 12, which are attached to the operation of the settling tank, are burned and damaged, which not only interrupts the continuous operation, but third, the level detection switch. In case of inoperability, high-level switchgear is often overhauled in the aerial area, which is accompanied by the problem of reducing the production cost due to the increase of the load of maintenance work as well as the risk of industrial accidents.

And fourthly, if sticky liquid is attached around the operation subdivision outside the level switch shaft 222d while the head level of the sedimentation tank 10 is lowered, the prote 22b, 22c 'is sensitive to the high and low of the head level. Will not be able to move

The present invention has been proposed to solve the above problems, the purpose of which is to ensure the reliability of the level detection switch and to prevent damage to the auxiliary equipment that is attached to the settling tanks, The present invention provides a level detector of a sedimentation tank that can prevent risks and contribute to productivity.

1 is a cross-sectional view showing a tank structure and a level switch according to the prior art;

2 is a cross-sectional view of the sedimentation tank level detector according to the present invention;

Figure 3 is an exploded perspective view of the main portion of the sedimentation tank level detector according to the present invention;

4 is a cross-sectional view attached to the sedimentation tank level detector according to the present invention.

* Description of the symbols for the main parts of the drawings *

10: sedimentant 13a: polymer inlet

30: hollow body 32: rubber plate

32a: Contact plate 35: Guide rod

40: casing 43: guide tube

50: control panel

As a technical means for achieving the above object, the present invention, in the sediment tank level detector of the furnace thickener facility, the flange and the liquid so that the detachable to the outer surface of the lower end of the sediment tank easily A hollow body mounted through an inlet pipe; A level control rubber plate is coupled to the upper portion of the body, and a plurality of circumferential grooves are formed on the upper portion of the rubber plate, and coupled to the body to position the level control rubber plate therein, and a plurality of air vent holes. Formed casing; A guide rod mounted on the upper part of the center of the casing and moving up and down inside the casing, and a contact plate mounted on the lower end of the guide rod, and detects high and low on the upper side and the one side. A guide tube equipped with a magnetic detection sensor capable of detecting a level of the guide rod which is raised and lowered proportionally according to the head of liquid in the settling tank; And a control panel electrically connected to the sensor and receiving a signal from each sensor to detect high and low heads in the sedimentation tank and to automatically control various devices connected to the sedimentation tank. By providing a level detector for the forced tank.

Hereinafter, with reference to the drawings will be described in more detail the configuration of the subject innovation.

The level detector of the sedimentation tank according to the present invention, as shown in FIG. 2 and FIG. 3, has a flange 30b in the form of a flange 30b so as to be easily attached to and detached from the lower end of the sedimentation tank 10. It has a conical hollow body 30. And, the lower portion of the body 30 has a liquid drain pipe and a manual valve 31 for the foreign matter discharge and test test.

And, the upper side of the conical hollow body 30 is coupled to the level control rubber plate 32, the upper surface of the thin rubber plate 32 from the center so as to be sensitive to the high and low liquid head level A plurality of circumferential grooves 32a are formed that gradually become concentric circles, and inside the thin rubber plate 32, plies (not shown) are circumferentially oriented in order to prevent cracks during shrinkage and expansion. Listen to.

A casing 40 for enclosing the level control rubber plate 32 in the upper portion of the level control rubber plate 32 is coupled to the body 30 by bolts 30a and penetrates through the casing 40. Air vent holes (41a) (41b) are formed, the central portion of the casing 40 is equipped with a cylindrical guide tube 43, the inside of the guide rods 34 to be movable up and down, The lower end of the guide rod 35 is integrally mounted with a support plate 32b for maintaining a state in contact with the upper surface of the rubber plate 32. In addition, the upper level portion of the guide tube 43 is a magnetic level detection sensor 42a for detecting a high level external threaded groove (not shown) is machined and screwed inward, so that fine adjustment of the head level detection is possible. It is to. In addition, a low level sensor 42b is coupled to the groove guided inside the center of the guide tube 43. In addition, the guide pipe 43 is formed with air vent holes 41c and 42d so that moisture and ventilation of the sensors 42a and 42b are well formed, and a disc-shaped high at the upper portion of the guide rod 35. The level detection plate 33 is mounted, and the low level detection plate 34 is provided so as not to interfere in one side direction. The sensors 42a and 42b are electrically connected to the control panel 50, respectively.

The operation of the level detection switch of the sedimentation tank according to the present invention will be described below.

In the present invention, the level detection switch of the sedimentation tank presses the sequence start button of the control panel 50 which receives the high and low level detection signals in the sedimentation tank 10 and transmits the next command. Begin with.

First, when lime water is replenished in the sedimentation tank 10 for dissolution of the solid polymer 13a in the sedimentation tank 10, it is installed at the bottom of the sedimentation tank 10 to detect high and low head. Liquid flows into the conical body 30 along the liquid inlet pipe 30a of the level detector to push up the level control rubber plate 32 in the form of a thin rubber plate to the upper side according to the head level of the sedimentation tank 10. . Therefore, the level control rubber plate 32 is elevated in height by sensitively increasing the small head difference according to the groove of the columnar shape that grows from the center in proportion to the head level.

Accordingly, the support plate 32a and the guide bar 35 in close contact with the center of the level control rubber plate 32 are operated up and down in accordance with the head at the center of the guide pipe 43. Therefore, when the high level detection plate 33 coupled to the upper end of the guide rod 35 approaches the magnetic material detection high level sensor 42a, the high head of the chicken pox detects the high (high) to generate an on signal and generates the signal. Is sent to the control panel 50 to generate a control signal. As the head gradually descends, the low level detection plate 34 approaches the low level sensor 42b, and the low level is controlled by an electric on signal. It is detected and sent to the control panel bell 50 to automatically determine the liquid head level of the sedimentation tank 10, based on this signal the control panel 50 is an auxiliary device attached to the sedimentation tank (10) To control them automatically.

According to the present invention as described above, has the following effects compared to the prior art. First, in the conventional float level detection method, due to the sticky material property of the settling agent, when the settling tank 10 is not used for a long time, the undissolved polymer is changed into a crystalline mass of the float. In the case of the present invention, the level control rubber plate 32 is sensitive to the head pressure in proportion to the head pressure in accordance with the high and low head level. Securing problems can be completely prevented, and since the sensors 42a and 42b are installed separately from the outside, reliability can be further improved in level detection. Second, the level detector is installed at the lowermost level. Can detect the high and low at one point, which can reduce the cost in terms of installation and processing compared to the conventional level switch It is possible to safely disassemble and assemble during the removal and repair of the high detection switch.

Third, the malfunction signal of the level detection operation can be prevented to prevent damage to the automation equipment connected thereto, and the productivity can be improved by increasing the efficiency of continuous operation. In addition, even if the fluid properties of the sedimentation tank 10 is not a sticky liquid material, it is a practical design that can be used in all liquid tanks used in industry and has a ripple application effect.

Claims (1)

In the sediment tank level detector of the furnace thickener facility, the hollow is mounted through the flange 30b and the liquid inlet pipe 30a so that attachment and detachment are possible on the outermost side of the lower end of the sediment tank 10. A body 30 of the mold; A level control rubber plate 32 is coupled to the upper portion of the body 30, and a plurality of columnar grooves 32a are formed on the upper portion of the rubber plate 32, and the level control rubber A casing 40 coupled to the body 30 to position the plate 32 therein, wherein a plurality of air vent holes 41a and 41b are formed; A guide rod 35 mounted on a central upper portion of the casing 40 and moving up and down inside the casing 40 and a contact plate 32a mounted on a lower end of the guide rod 35 are provided. The magnetic material detecting sensors 42a and 42b, which can detect high and low, are mounted to adjust the level of the guide rod 35 which is raised and lowered proportionally according to the head of the liquid in the settling tank 10. A guide tube 43 adapted to be detected; And, it is electrically connected to the sensors (42a, 42b) by receiving a signal from each sensor to detect the high and low head of the head in the sedimentation tank 10 to automatically control the various devices connected to the sedimentation tank (10) Control panel (50) to the level detector of the sedimentation tank comprising a.