CN112198907A - Device and method for automatically controlling level of pit sewage - Google Patents
Device and method for automatically controlling level of pit sewage Download PDFInfo
- Publication number
- CN112198907A CN112198907A CN202010999749.7A CN202010999749A CN112198907A CN 112198907 A CN112198907 A CN 112198907A CN 202010999749 A CN202010999749 A CN 202010999749A CN 112198907 A CN112198907 A CN 112198907A
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- China
- Prior art keywords
- pit
- sewage
- liquid level
- switch
- pump body
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- 239000010865 sewage Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 40
- 229920003023 plastic Polymers 0.000 claims abstract description 20
- 239000004033 plastic Substances 0.000 claims abstract description 20
- 230000006698 induction Effects 0.000 claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 32
- 229910052742 iron Inorganic materials 0.000 claims description 16
- 238000005086 pumping Methods 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000005097 cold rolling Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
- G05D9/12—Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
- G01F23/56—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using elements rigidly fixed to, and rectilinearly moving with, the floats as transmission elements
- G01F23/60—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using elements rigidly fixed to, and rectilinearly moving with, the floats as transmission elements using electrically actuated indicating means
- G01F23/606—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using elements rigidly fixed to, and rectilinearly moving with, the floats as transmission elements using electrically actuated indicating means using opto-electrically actuated indicating means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Fluid Mechanics (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The invention relates to an automatic control device and a control method for the level of sewage in a pit, wherein the device comprises the pit, a pump body is arranged in the pit close to the bottom, a bracket is arranged above the pit, an induction device and a limiting device are arranged on the bracket, a PV pipe penetrates through the limiting device, the bottom end of the PV pipe is connected with a plastic hollow sphere, the hollow sphere is arranged in the pit, the volume of liquid in the pit is changed, and the position of the PV pipe in the limiting device is changed; the control system is simultaneously communicated with the pump body and the sensing device, the sensing device timely acquires real-time conditions and transmits the real-time conditions to the control system, and the control system performs real-time identification and then sends an opening or closing instruction to the pump body; the invention utilizes the principle of the shielding switch grating to control the liquid level in the pit, thereby replacing the traditional floating ball control, automatically opening and closing the pump body and reducing the risk of flooding the basement.
Description
Technical Field
The invention relates to a device and a method for automatically controlling the sewage level in a pit, belonging to the field of automatic drainage control systems of pits.
Background
Each basement of a cold rolling plant is provided with a pit, when a pump body in the pit runs, sewage in the pit is extracted in time to prevent the basement from being submerged, the opening and closing signals of the pump body are controlled by the lifting of a floating ball in the pit body at present, and as the application with the application number of 201520977024.2, a rain-line pit drainage control system is disclosed, and the system comprises a floating ball type liquid level controller and a drainage pump in the pit, an intermediate relay, a remote input and output module and a master control PLC, wherein the intermediate relay, the remote input and output module and the master control PLC are arranged outside the pit, the remote input and output module is connected with the master control PLC through a bus, and the output end of the remote output; the floating ball type liquid level controller comprises three wiring terminals, a normally open contact and a normally closed contact are arranged in the floating ball type liquid level controller, the normally open contact is arranged at the height of a drainage liquid level, the normally closed contact is arranged at the height of a safe liquid level, a wiring terminal a is connected with the positive pole of a working power supply, a wiring terminal b is connected with the negative pole of the working power supply through an intermediate relay coil, the intermediate relay is provided with two normally open contacts KA1 and KA2, a wiring terminal c is connected with the positive pole of the working power supply through a normally open contact KA1, and the input end of a remote input module is; but instead of the other end of the tube
In the use because of the floater is in free state, lead to the floater to receive often that the exogenic action leads to the floater to damage or because of impurity, greasy dirt are many in the hole, lead to the floater to move inflexible or block scheduling problem, often can lead to the pump body can not in time start, cause the interior sewage overflow of pit, the basement is flooded.
Disclosure of Invention
The invention provides a device and a method for automatically controlling the level of sewage in a pit, which control the liquid level in the pit by utilizing the principle of a shielding switch grating so as to replace the traditional floating ball control, automatically open and close a pump body and reduce the risk of flooding a basement.
The technical scheme adopted by the invention for solving the technical problems is as follows:
an automatic control device for the level of sewage in a pit comprises the pit, wherein a pump body is arranged in the pit close to the bottom, a support is arranged above the pit, an induction device and a limiting device are arranged on the support, a PV pipe penetrates through the limiting device, the bottom end of the PV pipe is connected with a plastic hollow ball body, the hollow ball body is arranged in the pit, the volume of liquid in the pit is changed, and the position of the PV pipe in the limiting device is changed;
the control system is simultaneously communicated with the pump body and the sensing device;
as a further preferred aspect of the present invention, the limiting device comprises a plurality of snap rings sequentially mounted on the bracket, and the PV tubes sequentially penetrate through the snap rings;
as a further preferred embodiment of the present invention, the sensing device includes a first switch grating and a second switch grating mounted on the bracket, where the first switch grating is located below the second switch grating, that is, the first switch grating is close to the surface of the pit;
arranging an iron hoop on the PV tube;
setting a high liquid level and a low liquid level in the pit, wherein when the plastic hollow sphere is positioned at the low liquid level, the iron hoop is matched with the first switch grating in position, and when the plastic hollow sphere is positioned at the high liquid level, the iron hoop is matched with the second switch grating in position;
as a further preferred aspect of the present invention, the control system includes a rectification power supply, a relay, a contactor, and an air switch, which are sequentially connected by a wire to form a closed circuit;
the relay is simultaneously communicated with the first switch grating and the second switch grating;
the contactor is communicated with the pump body;
a control method based on the device for automatically controlling the level of the sewage in the pit comprises the following specific steps:
when the liquid level of the sewage in the pit rises, the plastic hollow ball body drives the PV pipe to rise in the clamping ring, when the rising position reaches the high liquid level in the pit, the iron hoop blocks the second switch grating, the relay sends an instruction for closing the contactor at the moment, the contactor is closed, the control system is communicated, and the pump body is started to extract the sewage in the pit;
after sewage in the pit is extracted, the plastic hollow ball body drives the PV pipe to descend in the clamping ring, when the descending position reaches the low liquid level in the pit, the iron hoop blocks the first switch grating, the relay sends an instruction of disconnecting the contactor at the moment, the contactor is disconnected, the pump body is closed, and water pumping is stopped.
Through the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1. the limiting control structure is made by connecting the PV pipe with the plastic hollow ball body, a floating ball control structure is replaced, and the problems that the floating ball is damaged due to the free state of the floating ball or the floating ball is inflexible in action or blocked due to the fact that impurities, oil stains and the like are more in a pit are solved;
2. the PV tube is driven to move up and down by the plastic hollow ball body, and when the iron hoop on the PV tube shields the switch grating at the designated position in the moving process, the connection of a control system is realized, so that the automatic opening and closing of the pump body are realized.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic structural diagram of a preferred embodiment provided by the present invention.
In the figure: 1 is air switch, 2 is the contactor, 3 is the relay, 4 is the rectifier power supply, 5 is the support, 6 is the snap ring, 7 is the second switch grating, 8 is the first switch grating, 9 is the hollow spheroid of plastics, 10 is high liquid level, 11 is low liquid level, 12 is the PV pipe, 13 is the pump body, 14 is the hoop.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
This application aims at providing an automatic control pit sewage liquid level device, utilizes the principle that shelters from the switch grating to control the liquid level in the pit, can realize that the automation of the pump body is opened and is closed, has guaranteed that the sewage in the pit can in time be extracted.
Fig. 1 shows a preferred embodiment provided by the present application, which includes a pit, a pump body 13 is installed near the bottom in the pit, a bracket 5 is installed above the pit, an induction device and a position-limiting device are installed on the bracket 5, a PV tube 12 is inserted into the position-limiting device, the bottom end of the PV tube is connected to a plastic hollow sphere 9, the hollow sphere is arranged in the pit, the volume of liquid in the pit changes, and the position of the PV tube 12 in the position-limiting device changes; the device also comprises a control system which is simultaneously communicated with the pump body 13 and the sensing device.
Based on the structure, when the position of the PV tube 12 in the limiting device is changed, the sensing device timely acquires the real-time situation and transmits the real-time situation to the control system, and the control system conducts real-time identification and then sends an opening or closing instruction to the pump body 13. The limiting device comprises a plurality of clamping rings 6 which are sequentially arranged on the bracket 5, in the preferred embodiment, three clamping rings 6 are arranged, and the PV tubes 12 are sequentially inserted through the three clamping rings 6; the induction device comprises a first switch grating 8 and a second switch grating 7 which are arranged on the bracket 5, wherein the first switch grating 8 is positioned below the second switch grating 7, namely the first switch grating 8 is close to the surface of the pit; disposing an iron hoop 14 on the PV tube 12; a high liquid level 10 and a low liquid level 11 are arranged in the pit, when the plastic hollow sphere 9 is positioned at the low liquid level 11, the position of the iron hoop 14 is matched with that of the first switch grating 8, and when the plastic hollow sphere 9 is positioned at the high liquid level 10, the position of the iron hoop 14 is matched with that of the second switch grating 7; the control system comprises a rectification power supply 4, a relay 3, a contactor 2 and an air switch 1, wherein the four are sequentially connected through a lead to form a closed loop; the relay 3 is simultaneously communicated with the first switch grating 8 and the second switch grating 7; the contactor 2 is in communication with the pump body 13.
Based on the automatic control pit sewage liquid level device, the control method for controlling the automatic control pit sewage liquid level device comprises the following specific steps:
when the liquid level of sewage in the pit rises, the plastic hollow sphere 9 drives the PV tube 12 to rise in the clamping ring 6, when the rising position reaches a high liquid level 10 in the pit, the iron hoop 14 blocks the second switch grating 7, at the moment, the relay 3 sends an instruction for closing the contactor 2, the contactor 2 is closed, the control system is communicated, and the pump body 13 is started to extract the sewage in the pit;
after sewage in the pit is extracted, the plastic hollow sphere 9 drives the PV tube 12 to descend in the clamping ring 6, when the descending position reaches a low liquid level 11 in the pit, the iron hoop 14 blocks the first switch grating 8, at the moment, the relay 3 sends an instruction of disconnecting the contactor 2, the contactor 2 is disconnected, the pump body 13 is closed, and water pumping is stopped.
The device provided by the application is low in cost and simple to manufacture, automatic control can be realized without depending on manpower, and inaccurate measurement caused by damage or blockage of the floating ball is avoided; in the application, the plastic hollow sphere 9 is adopted to replace a floating ball liquid level controller in the traditional technical center, so that the use cost is reduced, if the floating ball is calculated according to 500 yuan, 50 floating balls are probably required to be replaced in a cold rolling plant all the year around, and the aim of reducing the annual production cost by 2.5 yuan is fulfilled.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The meaning of "and/or" as used herein is intended to include both the individual components or both.
The term "connected" as used herein may mean either a direct connection between components or an indirect connection between components via other components.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1. The utility model provides an automatic control pit sewage liquid level device, includes the pit, its characterized in that: a pump body is arranged in the pit close to the bottom, a support is arranged above the pit, an induction device and a limiting device are arranged on the support, a PV tube penetrates through the limiting device, the bottom end of the PV tube is connected with a plastic hollow sphere, the hollow sphere is arranged in the pit, the volume of liquid in the pit is changed, and the position of the PV tube in the limiting device is changed;
the device also comprises a control system which is communicated with the pump body and the sensing device simultaneously.
2. The automatic control pit sewage level device of claim 1, characterized in that: the limiting device comprises a plurality of clamping rings which are sequentially arranged on the support, and the PV tube is sequentially inserted through the plurality of clamping rings.
3. The automatic control pit sewage level apparatus of claim 2, wherein: the induction device comprises a first switch grating and a second switch grating which are arranged on the support, wherein the first switch grating is positioned below the second switch grating, namely the first switch grating is close to the surface of the pit;
arranging an iron hoop on the PV tube;
set up high liquid level and low liquid level in the pit, when the hollow spheroid of plastics is located low liquid level, this moment the iron hoop matches with first switch grating position, when the hollow spheroid of plastics is located high liquid level, this moment the iron hoop matches with second switch grating position.
4. The automatic control pit sewage level device of claim 3, characterized in that: the control system comprises a rectification power supply, a relay, a contactor and an air switch, wherein the rectification power supply, the relay, the contactor and the air switch are sequentially connected through a lead to form a closed loop;
the relay is simultaneously communicated with the first switch grating and the second switch grating;
the contactor is communicated with the pump body.
5. A control method of the automatic control device for the level of the sewage in the pit based on claim 4, which is characterized in that: the method comprises the following specific steps:
when the liquid level of the sewage in the pit rises, the plastic hollow ball body drives the PV pipe to rise in the clamping ring, when the rising position reaches the high liquid level in the pit, the iron hoop blocks the second switch grating, the relay sends an instruction for closing the contactor at the moment, the contactor is closed, the control system is communicated, and the pump body is started to extract the sewage in the pit;
after sewage in the pit is extracted, the plastic hollow ball body drives the PV pipe to descend in the clamping ring, when the descending position reaches the low liquid level in the pit, the iron hoop blocks the first switch grating, the relay sends an instruction of disconnecting the contactor at the moment, the contactor is disconnected, the pump body is closed, and water pumping is stopped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010999749.7A CN112198907A (en) | 2020-09-22 | 2020-09-22 | Device and method for automatically controlling level of pit sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010999749.7A CN112198907A (en) | 2020-09-22 | 2020-09-22 | Device and method for automatically controlling level of pit sewage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112198907A true CN112198907A (en) | 2021-01-08 |
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ID=74015848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010999749.7A Pending CN112198907A (en) | 2020-09-22 | 2020-09-22 | Device and method for automatically controlling level of pit sewage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112198907A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113521874A (en) * | 2021-07-20 | 2021-10-22 | 南通瑞永嘉精密机械有限公司 | Efficient central water outlet machine |
| CN114935381A (en) * | 2022-03-21 | 2022-08-23 | 华能武汉发电有限责任公司 | External liquid level meter for sewage pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206863596U (en) * | 2017-07-04 | 2018-01-09 | 中广核工程有限公司 | A kind of nuclear power station automatic sump-pit drainage device |
| CN207264210U (en) * | 2017-07-25 | 2018-04-20 | 上汽通用五菱汽车股份有限公司 | Tank level control system |
| CN108563251A (en) * | 2018-06-30 | 2018-09-21 | 神华国华广投（柳州）发电有限责任公司 | A kind of extension type floating ball liquid level control device |
| CN210769265U (en) * | 2019-07-09 | 2020-06-16 | 杭州开源环保工程有限公司 | Closed effluent water sump water level control device |
| CN111446108A (en) * | 2020-04-08 | 2020-07-24 | 内蒙古中钰泰德煤炭有限公司 | Novel float switch |
-
2020
- 2020-09-22 CN CN202010999749.7A patent/CN112198907A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206863596U (en) * | 2017-07-04 | 2018-01-09 | 中广核工程有限公司 | A kind of nuclear power station automatic sump-pit drainage device |
| CN207264210U (en) * | 2017-07-25 | 2018-04-20 | 上汽通用五菱汽车股份有限公司 | Tank level control system |
| CN108563251A (en) * | 2018-06-30 | 2018-09-21 | 神华国华广投（柳州）发电有限责任公司 | A kind of extension type floating ball liquid level control device |
| CN210769265U (en) * | 2019-07-09 | 2020-06-16 | 杭州开源环保工程有限公司 | Closed effluent water sump water level control device |
| CN111446108A (en) * | 2020-04-08 | 2020-07-24 | 内蒙古中钰泰德煤炭有限公司 | Novel float switch |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113521874A (en) * | 2021-07-20 | 2021-10-22 | 南通瑞永嘉精密机械有限公司 | Efficient central water outlet machine |
| CN114935381A (en) * | 2022-03-21 | 2022-08-23 | 华能武汉发电有限责任公司 | External liquid level meter for sewage pump |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210108 |
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| RJ01 | Rejection of invention patent application after publication |