CN211401363U - Liquid level detection device and liquid level control system - Google Patents
Liquid level detection device and liquid level control system Download PDFInfo
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- CN211401363U CN211401363U CN201922335121.2U CN201922335121U CN211401363U CN 211401363 U CN211401363 U CN 211401363U CN 201922335121 U CN201922335121 U CN 201922335121U CN 211401363 U CN211401363 U CN 211401363U
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Abstract
The utility model discloses a liquid level detection device and a liquid level control system, which comprises a fixed bracket, wherein the fixed bracket is provided with a guide cylinder, a slidable guide rod is sleeved in the guide cylinder, the upper end of the guide rod is provided with a switch striker, and the lower end of the guide rod is provided with a floating ball floating on the liquid level of a liquid collecting tank; and a travel switch is also fixed on the fixed support and is used for outputting liquid level information when colliding with the switch. When the technical scheme provided by the application is applied, the electric element does not need to be immersed in the liquid collecting tank, so that the electric element is not easy to be corroded by liquid in the liquid collecting tank and aged, and the service life is longer; meanwhile, the current liquid level condition is determined through the impact of the switch impactor and the travel switch, the problem of magnetic attenuation does not exist, and the detection precision is improved.
Description
Technical Field
The utility model relates to a liquid level control technical field, more specifically say, relate to a liquid level detection device and liquid level control system.
Background
The liquid level position detection mode of the existing liquid collecting tank mainly comprises a connecting rod magnetic liquid level switch and a cable floating ball liquid level switch. The magnetic liquid level switch of the connecting rod has the problems of magnetic attenuation and inaccurate position detection; the cable of the cable floating ball liquid level switch is aged in the liquid collecting tank quickly, so that the cable floating ball liquid level switch is insensitive to action, the switch can only provide a position signal, and the use is inconvenient.
In summary, how to improve the accuracy of liquid level detection and prolong the service life is a problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a liquid level detecting device, in which the electric components do not need to be immersed in the liquid collecting tank, so that the liquid level detecting device is not easy to be corroded by the liquid in the liquid collecting tank and is not easy to age, and has a long service life; meanwhile, the current liquid level condition is determined through the impact of the switch impactor and the travel switch, and the problem of magnetic attenuation does not exist, so that the liquid level detection device still has high detection precision after being used for a long time. Another object of the present invention is to provide a liquid level control system including the above liquid level detecting device.
In order to achieve the above object, the present invention provides the following technical solutions:
a liquid level detection device comprises a fixed support, wherein the fixed support is provided with a guide cylinder, a slidable guide rod is sleeved in the guide cylinder, the upper end of the guide rod is provided with a switch striker, and the lower end of the guide rod is provided with a floating ball floating on the liquid level of a liquid collecting tank; and a travel switch is further fixed on the fixed support and used for outputting liquid level information when the fixed support collides with the switch.
Preferably, the travel switch comprises an upper travel switch and a lower travel switch which are distributed at intervals up and down, the switch striker is arranged between the upper travel switch and the lower travel switch, the upper travel switch is used for outputting upper limit liquid level information when colliding with the switch striker, and the lower travel switch is used for outputting lower limit liquid level information when colliding with the switch striker.
Preferably, the upper travel switch and the lower travel switch are respectively fixed with a mounting bottom plate, the mounting bottom plate is fixed with the fixing support through bolts, and the fixing support is provided with strip-shaped holes extending in the vertical direction so as to adjust the mounting positions of the bolts.
Preferably, the switch striker is in a disc-shaped structure.
Preferably, the floating ball is a stainless steel floating ball.
A liquid level control system comprises a liquid collecting tank, a liquid inlet and outlet mechanism, a control device and any one of the liquid level detection devices, wherein the control device is electrically connected with a limit switch of the liquid level detection device, and the control device is used for controlling the liquid inlet and outlet mechanism to work according to liquid level information output by the limit switch so as to enable the liquid level in the liquid collecting tank to be within a preset range.
Through above-mentioned scheme, the liquid level detection device and liquid level control system's that this application provided beneficial effect lies in:
in the working process, the floating ball floats on the liquid in the liquid collecting tank, the floating ball floats up and down along with the change of the liquid level, the guide cylinder limits the guide rod, therefore, the switch striker moves up and down along with the floating ball under the driving of the floating ball, and the position of the switch striker corresponds to the liquid level of the liquid collecting tank. When the switch bumper reaches the position of the travel switch and impacts the travel switch, the travel switch can transfer liquid level information to indicate that the switch bumper moves in place at the moment, and then the current liquid level in the liquid collecting tank is determined.
Because the travel switch can be erected above the liquid level through the fixed bracket and is not immersed in liquid like a cable in the prior art, the travel switch is not easy to corrode and damage and has longer service life; simultaneously, because travel switch just can output liquid level information receiving the collision of switch collider, promptly: the travel switch realizes the output of liquid level information through a mechanical mode, and the problem of magnetic attenuation is avoided in the using process, so that the detection precision is high even after the travel switch is used for a long time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the liquid level detection device in a working state.
The reference numerals in fig. 1 are:
the device comprises an upper travel switch 1, a switch striker 2, a guide rod 3, a guide cylinder 4, a floating ball 5, a mounting bottom plate 6, a lower travel switch 7, a fixed support 8, a connecting piece 9, a liquid level 10 and a liquid collecting tank 11.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The application provides a liquid level detection device, which comprises a fixed support 8, wherein the fixed support 8 is provided with a guide cylinder 4, a slidable guide rod 3 is sleeved in the guide cylinder 4, the upper end of the guide rod 3 is provided with a switch striker 2, and the lower end of the guide rod 3 is provided with a floating ball 5 floating on a liquid level 10 of a liquid collecting tank 11; and a travel switch is further fixed on the fixed support 8 and used for outputting liquid level information when the fixed support collides with the switch striker 2.
Specifically, the fixed support 8 is generally erected and fixed above the liquid collecting tank 11, and mainly plays a role in supporting and fixing the travel switch and the guide cylinder 4.
The guide cylinder 4 is fixed on the side part of the fixed support 8 through a connecting piece 9, the guide cylinder 4 and the guide rod 3 both extend along the vertical direction, and the inner diameter of the guide cylinder 4 is slightly larger than the outer diameter of the guide rod 3, so that the guide rod 3 can move along the axial direction.
The switch striker 2 is arranged on top of the guide bar 3 and can be fixed by bolting, or snapping, or other means. In practical use, the switch striker 2 preferably adopts a disc-shaped structure, and the disc-shaped switch striker 2 is sleeved and fixed on the periphery of the guide rod 3.
The floating ball 5 is fixed at the bottom of the guide rod 3, and in practical use, the floating ball 5 needs to float in liquid, and the liquid collecting tank 11 may be specifically an oil tank, an acid tank or an alkali tank, so that in order to prevent the floating ball 5 from being corroded by the liquid, the floating ball 5 is preferably made of stainless steel.
The travel switch is fixed on the fixed support 8 and is positioned in the movable travel of the switch striker 2. The specific position of the travel switch is artificially constrained according to requirements. The travel switch can output liquid level information after being impacted, in the subsequent treatment process, the liquid level information can be transmitted to a prompting device and triggers the prompting device to start, and the prompting device can be a prompting element such as a prompting lamp and a buzzer; or the liquid level information can also be transmitted to the control device, and the control device controls the liquid inlet and outlet mechanism to work after processing so as to adjust the liquid level of the liquid collecting tank 11.
In the working process, the floating ball 5 floats on the liquid level 10 under the buoyancy of the liquid and synchronously rises and falls along with the rising and falling of the liquid level, namely the position of the floating ball 5 corresponds to the height of the liquid level; meanwhile, the floating ball 5, the guide rod 3 and the switch striker 2 are fixedly connected, so that the position of the floating ball 5 and the position of the switch striker 2 have a corresponding relation. That is, the liquid level height can be determined according to information such as the position of the switch striker 2, the length of the guide rod 3, the specification of the float ball 5, and the like. The position of the travel switch is a limit position, when the switch striker 2 impacts the travel switch, the current liquid level reaches an upper limit position and/or a lower limit position, and therefore the effect of detecting the liquid level is achieved.
The application provides a liquid level detection device has that the trouble is low, the security is high, be convenient for the installation, easily be under construction, characteristics that the practicality is strong, has higher spreading value in the control of tank liquor. The components such as the travel switch, the guide rod 3, the guide cylinder 4 and the like are arranged above the liquid level 10, and the components are not corroded by liquid, so that the components are not easy to damage, and the service life is prolonged. Meanwhile, the liquid level detection device determines the liquid level height through the collision of the travel switch and the switch striker 2, magnetism is not needed to be used during detection, the problem of magnetic attenuation does not exist, and therefore the detection precision is high.
Further, in order to optimize the use effect of the liquid level detection device, in an embodiment provided by the application, the travel switch includes an upper travel switch 1 and a lower travel switch 7 which are distributed at intervals up and down, the switch striker 2 is arranged between the upper travel switch 1 and the lower travel switch 7, the upper travel switch 1 is used for outputting upper limit liquid level information when colliding with the switch striker 2, and the lower travel switch 7 is used for outputting lower limit liquid level information when colliding with the switch striker 2.
Specifically, two travel switches are provided, namely an upper travel switch 1 provided above the switch striker 2 and a lower travel switch 7 provided below the switch striker 2. In the working process, after the switch striker 2 moves upwards and impacts the upper travel switch 1, the upper travel switch 1 is triggered to output upper limit liquid level information, which indicates that the liquid level is too high at the moment and reaches the upper limit position, and the liquid in the liquid collecting tank 11 needs to be discharged; after the switch striker 2 moves downwards and strikes the lower stroke switch 7, the lower stroke switch 7 is triggered to output lower limit liquid level information, which indicates that the liquid level is too low and reaches the lower limit position at the moment, and liquid needs to be supplemented into the liquid collecting tank 11. Two travel switches make liquid level detection device have two detection site of upper limit and lower limit, improve the convenience of using.
Further, in order to optimize the use effect of liquid level detection device, in the embodiment that this application provided, upward travel switch 1, down travel switch 7 are fixed with a mounting plate 6 respectively, and mounting plate 6 passes through the bolt fastening with fixed bolster 8, and fixed bolster 8 is equipped with along the bar hole of vertical direction extension so that the mounted position of adjusting bolt.
Specifically, mounting plate 6 sets up in the front side of fixed bolster 8, and the lock nut setting of bolt is in the rear side of fixed bolster 8 simultaneously, and the bolt passes the bar hole, and the nut is fixed travel switch on fixed bolster 8 with the 6 cooperation of mounting plate. In addition, when in actual use, the installation positions of the two travel switches are adjusted, so that the liquid level difference of the upper limit position, the lower limit position, the upper limit position and the lower limit position of the liquid level can be manually controlled, the liquid level control requirement is better met, and the adjusting process is simple and convenient.
Except the above-mentioned liquid level detection device, this application still provides a liquid level control system, and this liquid level control system includes collecting tank 11, advances drainage mechanism, controlling means, above-mentioned arbitrary liquid level detection device. The control device is electrically connected with a limit switch of the liquid level detection device and used for controlling the liquid inlet and outlet mechanism to work according to liquid level information output by the limit switch so as to enable the liquid level in the liquid collecting tank 11 to be within a preset range.
Specifically, the liquid inlet and outlet mechanism can control the liquid inlet and outlet of the liquid collecting tank 11. In the process of automatic production, travel switch provides liquid level information to controlling means, and this liquid level information includes liquid feeding signal and/or flowing back signal, and controlling means can control into drainage mechanism according to liquid level information and carry out the operation that corresponds to make the liquid level in the catch basin 11 be in safe position all the time.
When the liquid level detection device of the liquid level control system is simultaneously provided with the upper travel switch 1 and the lower travel switch 7, after the upper travel switch 1 outputs upper limit liquid level information to the control device, the control device sends a liquid discharge signal to the liquid inlet and discharge mechanism, so that the liquid level of the liquid collecting tank 11 is controlled to be reduced; after the lower limit liquid level information is output to the control device by the lower travel switch 7, the control device sends a liquid adding signal to the liquid inlet and outlet mechanism, so that the liquid level of the liquid collecting tank 11 is controlled to rise.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
It is right above the utility model provides a liquid level detection device and liquid level control system have carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (4)
1. The liquid level detection device is characterized by comprising a fixed support (8), wherein the fixed support (8) is provided with a guide cylinder (4), a slidable guide rod (3) is sleeved in the guide cylinder (4), the upper end of the guide rod (3) is provided with a switch striker (2), and the lower end of the guide rod is provided with a floating ball (5) floating on the liquid level (10) of a liquid collecting tank (11); a travel switch is further fixed on the fixed support (8), and the travel switch is used for outputting liquid level information when colliding with the switch collider (2);
the travel switch comprises an upper travel switch (1) and a lower travel switch (7) which are distributed at intervals up and down, the switch collision member (2) is arranged between the upper travel switch (1) and the lower travel switch (7), the upper travel switch (1) is used for outputting upper limit liquid level information when colliding with the switch collision member (2), and the lower travel switch (7) is used for outputting lower limit liquid level information when colliding with the switch collision member (2);
go up travel switch (1) travel switch (7) are fixed with a mounting plate (6) respectively down, mounting plate (6) with fixed bolster (8) pass through the bolt fastening, fixed bolster (8) are equipped with along the bar hole of vertical direction extension so that adjust the mounted position of bolt.
2. The liquid level detection device according to claim 1, wherein the switch striker (2) has a disc-like structure.
3. The device for detecting the level of a liquid according to claim 2, characterized in that the floating ball (5) is a stainless steel floating ball.
4. A liquid level control system, comprising a liquid collecting tank (11), a liquid inlet and outlet mechanism, a control device, and a liquid level detection device as claimed in any one of claims 1 to 3, wherein the control device is electrically connected with a limit switch of the liquid level detection device, and the control device is used for controlling the liquid inlet and outlet mechanism to operate according to liquid level information output by the limit switch so as to enable the liquid level in the liquid collecting tank (11) to be within a preset range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922335121.2U CN211401363U (en) | 2019-12-23 | 2019-12-23 | Liquid level detection device and liquid level control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922335121.2U CN211401363U (en) | 2019-12-23 | 2019-12-23 | Liquid level detection device and liquid level control system |
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| CN211401363U true CN211401363U (en) | 2020-09-01 |
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| CN201922335121.2U Active CN211401363U (en) | 2019-12-23 | 2019-12-23 | Liquid level detection device and liquid level control system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114020053A (en) * | 2021-10-18 | 2022-02-08 | 一拖（洛阳）福莱格车身有限公司 | Steam condensate water liquid level detection and control device and detection method |
| CN114802637A (en) * | 2022-04-29 | 2022-07-29 | 华北水利水电大学 | But height-adjusting's boats and ships buffer stop |
| CN114963011A (en) * | 2022-06-27 | 2022-08-30 | 泰山玻璃纤维有限公司 | Novel circulation oil feeding system of treating compound for glass fiber |
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2019
- 2019-12-23 CN CN201922335121.2U patent/CN211401363U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114020053A (en) * | 2021-10-18 | 2022-02-08 | 一拖（洛阳）福莱格车身有限公司 | Steam condensate water liquid level detection and control device and detection method |
| CN114802637A (en) * | 2022-04-29 | 2022-07-29 | 华北水利水电大学 | But height-adjusting's boats and ships buffer stop |
| CN114963011A (en) * | 2022-06-27 | 2022-08-30 | 泰山玻璃纤维有限公司 | Novel circulation oil feeding system of treating compound for glass fiber |
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