CN212903445U - Material level detection device - Google Patents
Material level detection device Download PDFInfo
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- CN212903445U CN212903445U CN202022500176.7U CN202022500176U CN212903445U CN 212903445 U CN212903445 U CN 212903445U CN 202022500176 U CN202022500176 U CN 202022500176U CN 212903445 U CN212903445 U CN 212903445U
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- powder
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- material level
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- level detection
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- 239000000463 material Substances 0.000 title claims abstract description 37
- 238000001514 detection method Methods 0.000 title claims abstract description 25
- 239000000523 sample Substances 0.000 claims abstract description 21
- 230000008859 change Effects 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 abstract description 43
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000004568 cement Substances 0.000 abstract description 5
- 230000006698 induction Effects 0.000 abstract description 5
- 239000000919 ceramic Substances 0.000 abstract description 4
- 238000003860 storage Methods 0.000 description 17
- 238000000034 method Methods 0.000 description 9
- 239000000428 dust Substances 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002592 echocardiography Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model discloses a material level detection device, including the inclosed body of planting in the feed bin, its characterized in that: the tube body is provided with a plurality of mutually insulated electrode probes at intervals along the longitudinal direction, and circuits which respectively respond the electrical property change of each electrode probe and output corresponding signals are arranged in the tube body. When the powder in the bin contacts the electrode probes with different heights, the micro-conductive powder conducts the electrode probes and the bin wall to form a loop, an electrical change signal is generated, the electrical change signal is output to the bin control terminal through a circuit, the material level of the powder is detected, and the weight of the powder is calculated. The distance between the induction heads determines the metering precision of the powder, and the metering precision can completely meet the requirements of production management when reaching 500Kg in the ceramic industry and the cement industry.
Description
Technical Field
The utility model relates to a material level check out test set technical field of feed bin.
Background
In the industrial production of powder, finished and semi-finished powder products, such as cement clinker, finished cement powder, ceramic powder and the like, are stored in a large storage bin. In the 4.0 era of industry today, big data of each production link is a necessary trend. Then, the powder in the storage bin needs to be measured, the production quantity of semi-finished products and finished products of the powder is timely mastered, and the powder is conveniently in wireless butt joint with a production management system.
Generally, the storage bins for storing powder are largeThe height of the cylinder is often more than 8 m, and the capacity is basically more than 40m3The powder conveyed to the storage bin, whether negative pressure feeding or positive pressure feeding or belt conveyor feeding (the most of belt conveyor feeding), raises very large dust when falling into the storage bin, so that too much dust in the storage bin, the uramiasma and the visibility are low to less than 0.5 m. At present, the measurement of the powder volume contained in a storage bin is divided into two main categories, namely contact type and non-contact type. The contact type material level measuring method comprises induction type material level detection, weight type material level detection and capacitance type material level detection, the non-contact type material level measuring method comprises ultraviolet ray material level detection, ultrasonic wave material level detection, laser material level detection, high frequency laser material level detection, microwave radar material level detection, weighing sensor detection and other methods, and the methods have self limitations and cannot really achieve the aim of detecting the powder capacity. The contact induction type level detector utilizes powder containing certain moisture to have certain conductivity, the circuit conduction indicates that materials exist, and the circuit disconnection indicates that no materials exist. The method is not influenced by the environment in the storage bin, is stable and reliable, but only has two detection points which can be used as a full material signal and a short material signal, and cannot measure the specific quantity of the powder. The weight hammer type material level detection adopts a steel wire rope with a sensor to hang a weight hammer, the weight hammer is contacted with powder, the sensor sends a signal, the mechanism action is that the weight hammer rises, after a certain time interval, the weight hammer falls, and the contacted powder rises again; the weight is circularly lifted, and the height position of the powder is calculated according to the length of the steel wire rope. The measuring method is often easy to break the steel wire rope due to frequent reciprocating action of the mechanism, the heavy hammer is buried in powder, the service life is short, and the normal use time is often only about one month. The capacitance type material level detection utilizes two parallel polar plates to form a capacitor, the filling amount of materials is in direct proportion to the relative dielectric constant of the capacitor, the relative dielectric constant is related to the potential drop of the polar plates of the capacitor, the relative dielectric constant is calculated by measuring the potential drop of the polar plates, and then the material amount is calculated. Obviously, the capacitor plate distance cannot be made large, the application range is greatly limited, and the used examples are few. The ultraviolet material level detection utilizes the penetration or reflection principle of ultraviolet rays, and the ultraviolet rays penetrate throughWhen the powder is transparent, the powder is received at the other end, and the height of the powder is calculated by the attenuation of ultraviolet rays. Ultraviolet rays have harm to human bodies, trouble in preventing ultraviolet rays from being leaked is avoided, and industrial application is few. The ultrasonic material level detection is to irradiate ultrasonic waves to the surface of the material and calculate the distance between the material and an ultrasonic emission source by receiving reflected waves; in a limited cylindrical storage bin, the echoes are large, often distorting the ultrasonic waveform, resulting in inaccurate measurements. The laser level detector directly measures the position of the powder by using the principle of light reflection; when the visibility in the storage bin is very low, the laser penetration is limited, the measurement is inaccurate, and the general measuring range is within 2 meters. The high-frequency laser level detector has stronger penetrating power than the former, and even if the high-frequency laser frequency of 80G is high, the measuring range can only be within 4 meters in a storage bin with low visibility of high dust. Above, there is a commonality in relation to the method of measurement using electromagnetic waves: waves of various frequencies are greatly affected by the dielectric constant, which varies significantly with high-dust environments, and is a variation that causes attenuation of electromagnetic waves. Therefore, various electromagnetic waves are not very accurate in detecting the level of material in the closed cylinder. The weight of the powder can be accurately measured by the detection of the weighing sensor, but the use of the weighing sensor is limited by the structure of the storage bin. On one hand, after the bin is provided with the weighing sensor, the bin is independent and cannot be interfered by other bins, so that the stability of the bin is poor, and the size of the bin is determined; on the other hand, in the past, powder bins are connected into a whole, and the powder bins cannot be modified and installed with sensors.
Microwave radar level detection is a new level detection method developed in recent years. People add a plurality of methods while applying the advantages of electromagnetic wave non-contact detection, try to change the unstable condition of relative dielectric constant, all achieve certain effects, and have a plurality of application places. However, the fluctuation of the relative dielectric constant caused by the high-dust environment in the closed container is large, and the problem is not solved well.
SUMMERY OF THE UTILITY MODEL
The invention aims to solve the technical problem of providing a device which is not influenced by the environment in a storage bin and reasonably measures the position of powder in the storage bin in the process of loading, unloading and storing the powder in the storage bin so as to calculate the weight of the powder in the storage bin.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a material level detection device, is including inserting the inclosed body in the feed bin, its characterized in that: the tube body is provided with a plurality of mutually insulated electrode probes at intervals along the longitudinal direction, and circuits which respectively respond the electrical property change of each electrode probe and output corresponding signals are arranged in the tube body.
On the basis, the electrode probe is fixed on the tube body through the insulating plate.
Adopt the utility model discloses the beneficial effect who brings: when the powder in the bin contacts the electrode probes with different heights, the micro-conductive powder conducts the electrode probes and the bin wall to form a loop, an electrical change signal is generated, the electrical change signal is output to the bin control terminal through a circuit, the material level of the powder is detected, and the weight of the powder is calculated. The distance between the induction heads determines the metering precision of the powder, and the metering precision can completely meet the requirements of production management when reaching 500Kg in the ceramic industry and the cement industry.
Drawings
Fig. 1 is a schematic structural diagram of the material level detecting device of the present invention.
Detailed Description
As shown in fig. 1, a material level detecting device comprises a closed tube body 1 inserted into a storage bin 5, wherein a plurality of mutually insulated electrode probes 2 are distributed at intervals along the longitudinal direction of the tube body 1, and a circuit 3 which respectively responds to the electrical change of each electrode probe 2 and outputs corresponding signals is installed in the tube body 1.
The circuit 3 can adopt a conventional signal detection amplifying circuit and adopts a parallel circuit structure, each branch circuit is connected with a large resistor in series, one amplifier with signal output is connected with one branch circuit, and one electrode probe 2 is connected with one branch circuit. The common end of the parallel circuit is connected to the conductive silo wall. The electrode probes with different heights correspond to different material levels respectively. Adding a stable micro-voltage on the parallel circuit, when no powder exists in the bin, all the electrode probes 2 are not connected, and the micro-voltage is kept unchanged; when the powder in the bin rises to contact with a certain electrode probe 2, the micro-conductive powder conducts the electrode probe 2 and the bin wall to form a loop, and the micro-voltage drops rapidly. Or the micro voltage drop is kept stable, and the logic judges that the point is material. The detection signal is output to a bin control terminal through an amplifying circuit, and the control terminal judges the electrode probe 2 corresponding to the material level, so that the material level of the powder is detected, and the weight of the powder is calculated. The distance between the induction heads determines the metering precision of the powder, and the metering precision can completely meet the requirements of production management when reaching 500Kg in the ceramic industry and the cement industry.
In this embodiment, the electrode probe 2 is fixed to the tubular body 1 through an insulating plate 4. For ease of assembly, the tubular body 1 may be formed by assembling a channel-shaped profile and an insulating plate 4.
Claims (2)
1. The utility model provides a material level detection device, is including inserting the inclosed body in the feed bin, its characterized in that: the tube body is provided with a plurality of mutually insulated electrode probes at intervals along the longitudinal direction, and circuits which respectively respond the electrical property change of each electrode probe and output corresponding signals are arranged in the tube body.
2. The level detecting device according to claim 1, wherein: the electrode probe is fixed on the tube body through an insulating plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022500176.7U CN212903445U (en) | 2020-11-02 | 2020-11-02 | Material level detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022500176.7U CN212903445U (en) | 2020-11-02 | 2020-11-02 | Material level detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212903445U true CN212903445U (en) | 2021-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022500176.7U Expired - Fee Related CN212903445U (en) | 2020-11-02 | 2020-11-02 | Material level detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212903445U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113945254A (en) * | 2021-10-12 | 2022-01-18 | 北京惠朗时代科技有限公司 | Continuous quantity sectional type resistance direct measurement charge level indicator |
-
2020
- 2020-11-02 CN CN202022500176.7U patent/CN212903445U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113945254A (en) * | 2021-10-12 | 2022-01-18 | 北京惠朗时代科技有限公司 | Continuous quantity sectional type resistance direct measurement charge level indicator |
| CN113945254B (en) * | 2021-10-12 | 2024-04-09 | 北京惠朗时代科技有限公司 | Continuous sectional resistance direct measurement charge level indicator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210406 |