CN111121914A - Sensing device for detecting material level - Google Patents
Sensing device for detecting material level Download PDFInfo
- Publication number
- CN111121914A CN111121914A CN202010002972.XA CN202010002972A CN111121914A CN 111121914 A CN111121914 A CN 111121914A CN 202010002972 A CN202010002972 A CN 202010002972A CN 111121914 A CN111121914 A CN 111121914A
- Authority
- CN
- China
- Prior art keywords
- long rod
- elastic long
- pressure sensor
- fulcrum
- elastic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- G01F23/14—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 measurement of pressure
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention relates to a material level detection sensing device, which belongs to the technical field of detection equipment and comprises an elastic long rod close to a blanking port, a fulcrum positioned at the upper end of the elastic long rod and at least one pressure sensor close to the upper end of the elastic long rod, wherein when materials are stacked to a certain height and contact with and push the bottom end of the elastic long rod, the bottom end of the elastic long rod inclines along the gradient formed by stacking the materials; the elastic long rod has no other moving parts, does not need electrical connection, is not afraid of hanging materials and burying, is not damaged when deformed, can continuously work and has strong durability; the operation is simple, the disassembly, the assembly and the maintenance are easy, the cost of enterprises is effectively saved, and the method has very wide applicability.
Description
Technical Field
The invention relates to the technical field of detection equipment, in particular to a material level detection sensing device.
Background
At present, the known high material level detection equipment comprises a rotation resistance switch, a radio frequency admittance switch, a radar material level meter, a tuning fork material level switch, a vibration material level switch, a weight type material level meter, an ultrasonic material level meter, a nuclear material level meter and a passive nuclear material level meter. The level detection sensing devices are classified into a top mount type, a side mount type and an outside bin mount type according to their mounting methods.
The side-loading type measuring scheme has the common problem that the side-loading type measuring scheme is far away from a blanking port and cannot reflect the material level of a blanking point, so that the detection precision is low; and when the material level in the storage bin is lowered, the measuring device is easily damaged.
Top-loading measurement schemes include contact and non-contact. The non-contact type includes a radar type and an ultrasonic type. The measuring points of the two parts cannot be too close to the blanking point, otherwise, the measurement points are easy to falsely report during blanking; the weight type charge level indicator senses the charge level through downward detection of a weight, cannot continuously monitor the charge level and is easy to break down due to burying of the discharged material; the rotation-resistant switch and the vibration type material level switch have short service life and high cost because moving parts are easy to damage; the radio frequency admittance switch is greatly influenced by the dielectric constant of the measured material, and the measurement precision is low; the tuning fork material level switch is easy to misreport due to the hanging of the probe. All contact type level switches are rigid and are easy to deform and damage due to blanking burying.
The nuclear level indicator and the passive nuclear level indicator are installed outside a bin. Nuclear level gauges have limited application in many situations due to the presence of radioactive sources. Passive nuclear level gauges have difficulty meeting practical measurement requirements due to insufficient accuracy and mounting locations far from the drop point.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the material level detection sensing device, the elastic long rod is arranged near the blanking port, the upper end of the elastic long rod is provided with a fulcrum and a pressure sensor, after blanking to a certain height, the material pushes the elastic long rod to generate pressure, and the pressure is transmitted to the pressure sensor through the lever principle, so that the rising height of the material is accurately sensed.
The technical scheme for realizing the purpose is as follows:
the invention provides a material level detection sensing device, which comprises an elastic long rod, wherein the elastic long rod is close to a blanking port of a storage bin, the upper end of the elastic long rod is provided with a fulcrum, and the lower end of the elastic long rod extends towards the interior of the storage bin along a blanking direction and is used for sensing the material stacking height at the blanking port;
still include a plurality of pressure sensor, wherein, at least one pressure sensor's sensing element is pressed close to the upper end of elasticity stock is located and is close to one side of blanking mouth, the pressure sensor electricity is connected with the signal transmission unit, piles up the bottom that can extrude and promote the elasticity stock after the take the altitude when the material, according to fulcrum lever effect, the elasticity stock bottom is owing to receive the extrusion of material to promote and lead to elasticity stock upper end extrusion pressure sensor, forms sensor pressure peak signal, transmits the processing for the signal transmission unit, is convenient for follow-up manual identification and manual stop feeding, or machine automatic control stops the feeding.
Further, the pressure sensor protection device comprises an overpressure protection device for the pressure sensor, and the overpressure protection device is used for protecting the pressure sensor, and when the pressure transmitted by the elastic long rod reaches the full range of the pressure sensor, the extra pressure cannot act on the pressure sensor.
Further, pressure sensor is three, and is evenly around locating at vertical direction interval 120 each other elasticity stock for the elasticity stock can freely swing in the feed bin, receives the pressure effect back at the elasticity stock, has at least one pressure sensor to sense, and through three pressure sensor's measured data's combination, not only can obtain the size that the elasticity stock bottom was stressed, can also judge the direction of force.
Furthermore, the three pressure sensors are wound at the same position of the elastic long rod, so that the structure is compact, the occupied space is saved, and the protection is easy.
Furthermore, the pivot is a self-aligning bearing, and the elastic long rod is embedded in an inner ring raceway of the self-aligning bearing.
Furthermore, the upper end sleeve of the elastic long rod is provided with a protective shell for fixing the fulcrum, and the pressure sensor is positioned in the protective shell, so that the pressure sensor can be protected while the fulcrum is effectively fixed.
Furthermore, the fulcrum is positioned at the top of the protective shell and connected to the top end of the long elastic rod, the pressure sensor is positioned below the fulcrum, and the top end is used as a lever fulcrum, so that the pressure applied to the bottom end of the long elastic rod is transmitted to the pressure sensor below the fulcrum after being proportionally reduced; or the fulcrum is close to the lower end of the protective shell and connected to the upper end of the elastic long rod, the pressure sensor is located above the fulcrum, and the upper end of the elastic long rod is used as the fulcrum, so that the pressure applied to the bottom end of the elastic long rod is proportionally reduced and then is transmitted to the pressure sensor above the fulcrum.
Furthermore, the elastic long rod is made of spring steel, carbon fiber, glass fiber reinforced plastic or stainless steel.
Further, the elastic long rod is a cylinder or a polygonal prism.
Has the advantages that: compared with the prior art, the material level detection sensing device provided by the invention is different in that the material level detection sensing device comprises an elastic long rod close to a blanking port, a fulcrum positioned at the upper end of the elastic long rod and at least one pressure sensor close to the upper end of the elastic long rod, when materials are stacked to a certain height to contact and push the bottom end of the elastic long rod, the bottom end of the elastic long rod inclines along the gradient formed by material stacking, according to the lever principle, the pressure is transmitted to the pressure sensor at the upper end of the elastic long rod after being reduced in proportion, the material level height of the materials at the blanking port, namely the position of the bottom end of the elastic long rod, can be effectively sensed, and the detection; the elastic long rod has no other moving parts, does not need electrical connection, is not afraid of hanging materials and burying, is not damaged when deformed, can continuously work and has strong durability; the pressure sensor is also a non-vulnerable element in the measuring range, and can be used for a long time; the operation is simple, the disassembly, the assembly and the maintenance are easy, the cost of enterprises is effectively saved, and the method has very wide applicability.
Drawings
FIG. 1 is a front view of a level sensing sensor apparatus according to a preferred embodiment of the present application.
Fig. 2 is a front view schematically illustrating a relative position between a fulcrum and a pressure sensor in an embodiment of the present application.
Fig. 3 is a schematic front view of the relative positions of the fulcrum and the pressure sensor in the second embodiment of the present application.
Fig. 4 is a schematic front view of the relative positions of the fulcrum and the pressure sensor in the third embodiment of the present application.
The device comprises a storage bin 1, a material 11, a blanking port 2, an elastic long rod 3, a fulcrum 4, a pressure sensor 5 and a protective shell 6.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
The first embodiment is as follows:
referring to fig. 1 and 2, the present invention provides a material level detection sensing device, including a long elastic rod 3 located on the right side of a blanking port 2 of a storage bin 1, wherein the upper end of the long elastic rod 3 is provided with a fulcrum 4, and the lower end of the long elastic rod 3 extends vertically to the interior of the storage bin 1 along a blanking direction, so as to sense the height of the material 11 stacked at the blanking port 2;
still include a pressure sensor 5, this pressure sensor 5's sensing element is pressed close to the left side of the upper end of elasticity stock 3, 5 electricity of pressure sensor is connected with the signal transmission unit, can contact and promote the bottom of elasticity stock 3 after the material 11 piles up the take the altitude, the slope that 11 piles up of material is followed to the right side skew in the bottom of elasticity stock 3, according to lever principle, the upper end of elasticity stock 3 can be corresponding to the left side skew, to the direction skew of blanking mouth 2 promptly, thereby can extrude the pressure sensor 5 of the 3 upper ends of elasticity stock, form sensor pressure peak signal, transmit and handle for the signal transmission unit, be convenient for follow-up artifical discernment and manual feed stopping, or machine automatic control stops the feeding.
Preferably, an overpressure protection device, preferably a pressure overload protector, is further included for the pressure sensor 5, so as to protect the pressure sensor, and when the pressure transmitted by the flexible long rod 3 reaches the full range of the pressure sensor 5, the additional pressure will not act on the pressure sensor 5.
Preferably, the pivot 4 is a self-aligning bearing, and the long elastic rod 3 is embedded in an inner ring raceway of the self-aligning bearing, so that the long elastic rod 3 can rotate in a certain axial range.
Preferably, the elastic long rod 3 is made of spring steel, carbon fiber, glass fiber reinforced plastic or stainless steel.
Preferably, the long elastic rod 3 is a cylinder or a polygonal prism, obviously, on the basis of not influencing the existing function of the long elastic rod 3, the long elastic rod 3 can also be configured as a rod body with a non-standard shape, such as a cone-like body with a thin upper end and a thick upper end, and is also within the protection scope of the invention.
Preferably, the upper end of the long elastic rod 3 is sleeved with a protective shell 6 for fixing the fulcrum 4, the pressure sensor 5 is located in the protective shell 6, and the pressure sensor 5 can be protected from external influences while the fulcrum 4 is effectively fixed.
Preferably, the fulcrum 4 is located at the top of the protective housing 6 and connected to the top end of the long elastic rod 3, and the pressure sensor 5 is located below the fulcrum 4, and the top end is used as a lever fulcrum, so that the pressure applied to the bottom end of the long elastic rod 3 is transmitted to the pressure sensor 5 below the fulcrum 4 after being proportionally reduced.
Example two:
the same parts of this embodiment as those of the first embodiment will not be described again, and only the differences will be described.
Referring to fig. 3, in this embodiment, the fulcrum 4 is close to the lower end of the protective housing 6 and is connected to the upper end of the long elastic rod 3, and the pressure sensor 5 is located above the fulcrum 4, and the upper end of the long elastic rod 3 is used as the fulcrum, so that the pressure applied to the bottom end of the long elastic rod 3 is reduced proportionally and then transmitted to the pressure sensor 5 above the fulcrum 4.
Example three:
the same parts of this embodiment as those of the second embodiment will not be described again, and only the differences will be described.
Referring to fig. 4, in this embodiment, the three pressure sensors 5 are uniformly wound around the elastic long rod 3 at intervals of 120 ° in the vertical direction, so that the elastic long rod 3 can swing freely in the storage bin, and the position of the pressure sensor 5 on the elastic long rod 3 relative to the blanking port 2 does not need to be considered, after the elastic long rod 3 is stressed, at least one pressure sensor 5 can sense the stress, and through the combination of the measurement data of the three pressure sensors 5, not only can the stress of the bottom end of the elastic long rod 3 be obtained, but also the stress direction can be judged.
Preferably, the three pressure sensors 5 are wound at the same position of the elastic long rod 3, so that the structure is compact, the occupied space is saved, and the protection is easy.
Particularly, the material is from blanking mouth feeding in to the feed bin, can contact the bottom of elasticity stock after the material piles up the take the altitude, along with the further interpolation of material, the slope that the elasticity stock piled up the formation along the material squints gradually, according to lever principle, the elasticity stock is under the fulcrum effect, the upper end of elasticity stock has the skew of opposite direction, this moment will produce certain extrusion pressure to this ascending pressure sensor of side, form sensor pressure peak signal, and transmit and carry out corresponding processing for signal transmission unit.
According to the principle, the height of the material level in the storage bin, namely the height of the position of the bottom end of the long elastic rod can be obtained, and the height of the material level is very close to the height of the material level of a blanking point because the long elastic rod is arranged at the position close to the blanking port, so that the detection sensing device has higher accuracy compared with the conventional material level detection equipment; the device simple structure, convenient operation to elasticity stock does not have the moving part, does not need electrical connection, is afraid of to hang the material, is afraid of to bury, takes place deformation and can not damage yet, and pressure sensor is also not quick-wear component in the range, has very long life, easy dismouting, easy maintenance, and is with low costs, has very extensive suitability.
The above embodiments are merely preferred embodiments of the present disclosure, which are not intended to limit the present disclosure, and any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present disclosure, should be included in the scope of the present disclosure.
Claims (10)
1. The material level detection sensing device is characterized by comprising an elastic long rod close to a blanking port of a storage bin, wherein the upper end of the elastic long rod is provided with a fulcrum, and the lower end of the elastic long rod extends towards the interior of the storage bin along the blanking direction;
still include a plurality of pressure sensor, wherein, at least one pressure sensor's sensing element is pressed close to the upper end of elasticity stock is located and is close to one side of blanking mouth, pressure sensor electricity is connected with signal transmission unit.
2. The level sensing transducer of claim 1, wherein:
an overpressure protection device for the pressure sensor is also included.
3. The level sensing transducer of claim 1, wherein:
the number of the pressure sensors is three, and the pressure sensors are uniformly wound on the elastic long rod at intervals of 120 degrees in the vertical direction.
4. The level sensing transducer of claim 3, wherein:
the three pressure sensors are wound at the same position of the elastic long rod.
5. The level sensing transducer of claim 1, wherein:
the pivot is a self-aligning bearing, and the elastic long rod is embedded in an inner ring raceway of the self-aligning bearing.
6. Level sensing sensor apparatus according to any one of claims 1 to 5, wherein:
the upper end sleeve of the elastic long rod is provided with a protective shell for fixing the fulcrum, and the pressure sensor is positioned in the protective shell.
7. The level sensing transducer of claim 6, wherein:
the fulcrum is positioned at the top of the protective shell and connected to the top end of the elastic long rod, and the pressure sensor is positioned below the fulcrum.
8. The level sensing transducer of claim 6, wherein:
the fulcrum is close to the lower end of the protective shell and connected to the upper end of the elastic long rod, and the pressure sensor is located above the fulcrum.
9. The level sensing transducer of claim 1, wherein:
the elastic long rod is made of spring steel, carbon fiber, glass fiber reinforced plastic or stainless steel.
10. The level sensing transducer of claim 1 or 9, wherein:
the elastic long rod is a cylinder or a polygonal prism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010002972.XA CN111121914A (en) | 2020-01-02 | 2020-01-02 | Sensing device for detecting material level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010002972.XA CN111121914A (en) | 2020-01-02 | 2020-01-02 | Sensing device for detecting material level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111121914A true CN111121914A (en) | 2020-05-08 |
Family
ID=70507595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010002972.XA Pending CN111121914A (en) | 2020-01-02 | 2020-01-02 | Sensing device for detecting material level |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111121914A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112880767A (en) * | 2021-01-11 | 2021-06-01 | 安徽工程大学 | Anti-overflow electric system for filtrate tank |
| CN114683411A (en) * | 2020-12-30 | 2022-07-01 | 三一汽车制造有限公司 | Material level detection device, mixer truck and cooperative operation method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2363272Y (en) * | 1998-08-28 | 2000-02-09 | 宝山钢铁(集团)公司 | Pneumatic type liquid material level meter |
| CN101451871A (en) * | 2007-12-07 | 2009-06-10 | 郭云昌 | Blanking stack height measuring device |
| CN104359526A (en) * | 2014-11-08 | 2015-02-18 | 胡桂标 | State induction type intelligent level indicator |
| JP2018017661A (en) * | 2016-07-29 | 2018-02-01 | 株式会社デンソー | Liquid surface level detector |
| CN208852945U (en) * | 2018-08-13 | 2019-05-14 | 晨光生物科技集团股份有限公司 | A kind of material-level detecting device for roller-crushing mill powder machine |
-
2020
- 2020-01-02 CN CN202010002972.XA patent/CN111121914A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2363272Y (en) * | 1998-08-28 | 2000-02-09 | 宝山钢铁(集团)公司 | Pneumatic type liquid material level meter |
| CN101451871A (en) * | 2007-12-07 | 2009-06-10 | 郭云昌 | Blanking stack height measuring device |
| CN104359526A (en) * | 2014-11-08 | 2015-02-18 | 胡桂标 | State induction type intelligent level indicator |
| JP2018017661A (en) * | 2016-07-29 | 2018-02-01 | 株式会社デンソー | Liquid surface level detector |
| CN208852945U (en) * | 2018-08-13 | 2019-05-14 | 晨光生物科技集团股份有限公司 | A kind of material-level detecting device for roller-crushing mill powder machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114683411A (en) * | 2020-12-30 | 2022-07-01 | 三一汽车制造有限公司 | Material level detection device, mixer truck and cooperative operation method |
| CN112880767A (en) * | 2021-01-11 | 2021-06-01 | 安徽工程大学 | Anti-overflow electric system for filtrate tank |
| CN112880767B (en) * | 2021-01-11 | 2023-10-27 | 安徽工程大学 | Anti-overflow electrical system for liquid filtering tank |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9377340B2 (en) | Monitoring of floating roof tank | |
| CN111121914A (en) | Sensing device for detecting material level | |
| CN203287788U (en) | Control system for identifying undesirable situation in operation of floating top of container and monitoring system | |
| US8776596B2 (en) | Apparatus for the monitoring of floating roof position for storage tank roofs | |
| KR830001925B1 (en) | Measuring device for use with tubular products | |
| EP3276190A1 (en) | A bearing arrangement with sensor and an associated method | |
| US8531304B2 (en) | Device and method for measuring material level in bin using flexible resistant members | |
| CN109061722A (en) | A kind of substation's Seismic Evaluation system and method | |
| CN105466521A (en) | Method for measuring liquid level of liquid in container | |
| JP2001153879A (en) | Optical wind vane and anemometer | |
| CN101650213A (en) | Device for monitoring storage amount of container | |
| CN219694310U (en) | Intelligent water level measuring device for hydraulic engineering | |
| CN105758560A (en) | Load sensor containing split type I-shaped elastic element | |
| CN214470681U (en) | 3D measuring head supporting mechanism | |
| CN208251052U (en) | Multi-functional static sounding visits tool | |
| CN106403798A (en) | Device and system for measuring internal displacement of concrete and installation method of system | |
| CN215064809U (en) | Belt coal leakage monitoring and weighing alarm system | |
| CN216246921U (en) | Stress sensor | |
| CN110319989B (en) | Nondestructive testing method for spring stiffness in-service spring support and hanger | |
| CN205209600U (en) | Yellow phosphorus liquid level measurement device | |
| CN209589268U (en) | A kind of inserted-link type temperature monitor | |
| CN112065368A (en) | Oil well measuring tool | |
| CN207180588U (en) | A kind of displacement transducer | |
| CN204214514U (en) | State induction type Intelligent Charge Level Indicator | |
| JP5699400B1 (en) | Liquid level indicator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200508 |
|
| WD01 | Invention patent application deemed withdrawn after publication |