CN214474642U - Liquid level detection device for liquid pool - Google Patents
Liquid level detection device for liquid pool Download PDFInfo
- Publication number
- CN214474642U CN214474642U CN202120776164.9U CN202120776164U CN214474642U CN 214474642 U CN214474642 U CN 214474642U CN 202120776164 U CN202120776164 U CN 202120776164U CN 214474642 U CN214474642 U CN 214474642U
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- liquid level
- proximity switch
- trigger block
- liquid
- fixed pulley
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Abstract
The utility model provides a liquid pool liquid level detection device, includes float, wire rope, proximity switch, trigger block and two fixed pulleys, the float floats on the liquid level in the liquid pool, the trigger block is located the liquid pool outside, and two fixed pulleys are all installed on the support, and just first fixed pulley is located the float directly over, and the second fixed pulley is located the trigger block directly over, the trigger block is hung to wire rope's one end, and the other end is connected with the float after walking around second fixed pulley and first fixed pulley in proper order, proximity switch fixes on the support and corresponding with the lift route of trigger block, and proximity switch's contact inserts the control circuit of liquid level control pump. The utility model discloses with proximity switch and trigger block setting in the outside of liquid pool, do not receive the influence of materials such as contained acid, alkali, greasy dirt, organic solvent in liquid temperature and the liquid, only the float in the liquid pool does not receive the influence of scale deposit yet, greatly reduced liquid level detection device's fault rate, can guarantee liquid level control pump normal operating.
Description
Technical Field
The utility model relates to a liquid pool liquid level detection device for liquid level control, the device can reliably move in various adverse circumstances, belongs to and detects technical field.
Background
In the process of controlling the liquid level of the liquid pool by using the liquid level control pump, the liquid level of the liquid pool needs to be detected in real time by using a liquid level detection device. The conventional liquid level detection device can be roughly divided into two types, one type is a cable floating ball liquid level switch, and the device controls the on-off of a liquid level control pump loop by triggering a microswitch to act through a floater lifting along with the liquid level by utilizing the principles of gravity and buoyancy so as to achieve the purpose of controlling the starting and stopping of a pump body by the liquid level. Because the microswitch and the lead of the liquid level detection device are contacted with liquid, the liquid level detection device is easy to corrode and break down, and particularly when the temperature change range of the liquid is large or the liquid contains corrosive substances such as acid, alkali, oil stain, organic solvent and the like, the liquid level detection device is very easy to damage and even cause electric leakage accidents; the other type is a magnetic turning plate liquid level meter (also called a magnetic floater liquid level meter), which drives a turning column to rotate by a magnetic floater which rises and falls along with the liquid level according to the buoyancy and magnetic coupling principle, so that a liquid level switch arranged on a vertical pipe of the liquid level meter is actuated, and the purpose of controlling the starting and stopping of a pump body is achieved. The liquid level detection device has the defects that the liquid level detection device is not suitable for liquid with more steam and bubble content, and the content of the detection pipe is easy to scale in the using process, so that a magnetic float cannot normally lift, and the reliability of the liquid level detection device is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a liquid pool liquid level detection device to the drawback of prior art to reduce liquid level detection device's fault rate, guarantee liquid level control pump normal operating.
The problem of the utility model is solved with following technical scheme:
the utility model provides a liquid pool liquid level detection device, includes float, wire rope, proximity switch, trigger block and two fixed pulleys in the constitution, the float floats on the liquid level in the liquid pool, the trigger block is located the liquid pool outside, and two fixed pulleys are all installed on the support, and just first fixed pulley is located the float directly over, and the second fixed pulley is located the trigger block directly over, the trigger block is hung to wire rope's one end, and the other end is connected with the float after walking around second fixed pulley and first fixed pulley in proper order, proximity switch fixes on the support and corresponding with the lift route of trigger block, and proximity switch's contact inserts the control circuit of liquid level control pump.
According to the liquid level detection device for the liquid pool, the protective sleeve is sleeved outside the trigger block and vertically fixed on the ground, a gap is reserved between the trigger block and the inner wall of the protective sleeve, and the through hole corresponding to the proximity switch is formed in the side wall of the protective sleeve.
In the liquid level detection device for the liquid pool, the two proximity switches are respectively an upper-limit proximity switch and a lower-limit proximity switch, and the upper-limit proximity switch is positioned below the lower-limit proximity switch.
The utility model discloses with proximity switch and trigger block setting in the outside of liquid pool, do not receive the influence of materials such as contained acid, alkali, greasy dirt, organic solvent in liquid temperature and the liquid, only the float in the liquid pool does not receive the influence of scale deposit yet, greatly reduced liquid level detection device's fault rate, can guarantee liquid level control pump normal operating.
Drawings
The present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of the present invention;
figure 2 is a schematic diagram of the connection of a proximity switch in some level control circuit.
The reference numbers in the figures are: 1. the device comprises a floater, 2, a steel wire rope, 3, a first fixed pulley, 4, a second fixed pulley, 5, a trigger block, 6, a support, 7, a protective sleeve, KM, a contactor, KM-1, a main contact of the contactor, KM-2, an auxiliary contact of the contactor, QF, an air switch, SB1, a stop button, SB2, a start button, SL1, an upper limit approach switch, SL2, a lower limit approach switch, M and a liquid level control pump.
Detailed Description
Referring to fig. 1, the present invention mainly includes two proximity switches (i.e., an upper limit proximity switch SL1 and a lower limit proximity switch SL2), a trigger block 5, a protection casing 7, a wire rope 2, two fixed pulleys (i.e., a first fixed pulley 3 and a second fixed pulley 4), a float 1, and a bracket 6.
The utility model discloses during the use, at first according to the float 1 of liquid pool medium selection relative material, avoid float 1 impaired in high temperature, acid-base, organic solvent's medium, then according to on-the-spot actual conditions installing support 6 and confirm on support 6 that the spacing is close switch SL1 and the approximate position of lower spacing close switch SL2, guarantee that two proximity switches are in the environment better position relatively, do not receive the influence of medium in the liquid pool, prolong its life, and the maintenance cost is reduced. Afterwards, two fixed pulleys are arranged on a support 6, a protective sleeve 7 is fixed below a second fixed pulley 4, a floater 1 is connected to one end of a steel wire rope 2 through a hook, and the other end of the steel wire rope 2 sequentially rounds a first fixed pulley 3 and the second fixed pulley 4 and then is connected with a trigger block 5 in the protective sleeve 7.
The working principle of the device is as follows: when the liquid level in the liquid pool changes, the floater 1 moves up and down along with the liquid level, as the floater 1 is connected with the trigger block 5 (the mass of the trigger block is slightly smaller than that of the floater 1) through the steel wire rope 2 on the first fixed pulley 3 and the second fixed pulley 4, the trigger block 5 moves up and down in the protective sleeve 7 under the action of the pulling force of the floater 1 and the self gravity, and when the floater moves to the position of the upper limit proximity switch SL1 or the lower limit proximity switch SL2, the corresponding proximity switch acts to control the liquid level control pump M to start or stop. The device can change the distance between the upper limit proximity switch SL1 and the lower limit proximity switch SL2 and the liquid pool by changing the distance between the first fixed pulley 3 and the second fixed pulley 4 and the length of the steel wire rope 2, so that the device is far away from a high-temperature and humid environment, the proximity switch and the connecting wires thereof are prevented from being corroded by acid-base and organic solvents, the potential hazards of electric leakage accidents are eliminated, and the safe and stable operation of the device is ensured.
Fig. 2 is a schematic connection diagram of a proximity switch in a certain liquid level control circuit, wherein a liquid level control pump M in the diagram is a drainage pump, when the liquid level of a liquid pool rises, a floater 1 rises, a trigger block 5 descends, when the trigger block 5 moves to the position of an upper limit proximity switch SL1, the upper limit proximity switch SL1 acts, a normally open contact of the upper limit proximity switch is closed, a contactor KM is powered on to act, a contactor main contact KM-1 is closed, the drainage pump is started, meanwhile, a contactor auxiliary contact KM-2 is closed to realize self-locking, and the drainage pump keeps in a running state; after the liquid discharge pump is started, the liquid level begins to descend, the floater 1 descends along with the water level, the trigger block 5 ascends, when the trigger block 5 moves to the position of the lower limit proximity switch SL2, the lower limit proximity switch SL2 acts, the normally closed contact is disconnected, the contactor KM is powered off, the main contact KM-1 of the contactor is opened, and the liquid discharge pump stops running.
The utility model discloses application range is wide, and factor of safety is high, and simple structure, it is not high to medium and environmental requirement, and later maintenance is convenient.
Claims (3)
1. A liquid level detection device of a liquid pool is characterized by comprising a floater (1), a steel wire rope (2), a proximity switch, a trigger block (5) and two fixed pulleys, the floater (1) floats on the liquid level in the liquid pool, the trigger block (5) is positioned outside the liquid pool, the two fixed pulleys are both arranged on the bracket (6), the first fixed pulley (3) is positioned right above the floater (1), the second fixed pulley (4) is positioned right above the trigger block (5), one end of the steel wire rope (2) is hung with the trigger block (5), the other end of the steel wire rope sequentially rounds the second fixed pulley (4) and the first fixed pulley (3) and then is connected with the floater (1), the proximity switch is fixed on the bracket (6) and corresponds to the lifting path of the trigger block (5), and the contact of the proximity switch is connected into a control loop of the liquid level control pump (M).
2. The liquid level detection device of claim 1, wherein a protective casing (7) is sleeved outside the trigger block (5), the protective casing (7) is vertically fixed on the ground, a gap is reserved between the trigger block (5) and the inner wall of the protective casing (7), and a through hole corresponding to the proximity switch is formed in the side wall of the protective casing (7).
3. A liquid pool level detection device according to claim 1 or 2, wherein the proximity switch is provided in two, respectively an upper proximity switch (SL1) and a lower proximity switch (SL2), the upper proximity switch (SL1) being located below the lower proximity switch (SL 2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120776164.9U CN214474642U (en) | 2021-04-16 | 2021-04-16 | Liquid level detection device for liquid pool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120776164.9U CN214474642U (en) | 2021-04-16 | 2021-04-16 | Liquid level detection device for liquid pool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214474642U true CN214474642U (en) | 2021-10-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120776164.9U Active CN214474642U (en) | 2021-04-16 | 2021-04-16 | Liquid level detection device for liquid pool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214474642U (en) |
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2021
- 2021-04-16 CN CN202120776164.9U patent/CN214474642U/en active Active
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