CN207502022U - Indirect Weighing type level-sensing device - Google Patents
Indirect Weighing type level-sensing device Download PDFInfo
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- CN207502022U CN207502022U CN201721695264.9U CN201721695264U CN207502022U CN 207502022 U CN207502022 U CN 207502022U CN 201721695264 U CN201721695264 U CN 201721695264U CN 207502022 U CN207502022 U CN 207502022U
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- weighing
- sensing device
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Abstract
The utility model discloses a kind of indirect Weighing type level-sensing devices, including being fixed on stress in upper bracket and undersetting in the support device of raw material cabin, it further includes mounted on the weighing sensor and transmission rod between upper bracket and undersetting, the weighing instrument being electrically connected with weighing sensor is further included, the weight of raw material cabin is shown on weighing instrument.This level-sensing device does not have mechanical movement, convenient for installation and maintenance, and service life is long, continuously displays, and reliability is high.Compared with radio frequency admittance level-sensing device, advantage is not influenced by environment and material properties this level-sensing device scheme, and performance is stablized, long lifespan, not upper silo roof installation, and installation maintenance is more convenient.It employs general purpose transducer and facilitates the dowel bar structure of adjusting, the scope of application is wider, and materials are easier for installation, are more easy to promote the use of.The utility model does not influence support device structure safety, is not weighed scope limitation by sensor, at low cost, is more easy to promote.
Description
Technical field
The utility model belongs to a kind of weighing device more particularly to a kind of indirect Weighing type level-sensing device.
Background technology
For a long time, liquid, powdery, granular material are stored, typically using enclosed drum magazine, that is, is expected
Storehouse.In this way, in feed bin material number, be exactly important information of concern, in order to know this information, just produce material position
Instrument.
Existing frequently-used level-sensing device can be divided into the type of continuously displaying and interruption display type, continuously display that type is common radio frequency
Admittance type, direct weighing type and sensor special.Interruption display type mainly has mechanical measurement type and damp type.
Radio frequency admittance type major defect is that its display precision and effect are usually influenced by material properties and environmental factor, can
It is poor by property, silo roof installation maintenance is often required to, so installation maintenance difficulty is big.
Direct weighing type is that large-scale weighing sensor is installed in support device, and advantage is that display is accurate, and shortcoming is exactly shadow
Support device structure safety is rung, while weighs and is limited by sensor capability.
The shortcomings that sensor special type is of high cost, limits the range of stress of support device, it is difficult to promote and apply.
Mechanical measurement type is weight to be driven to measure charge level height with mechanical device to calculate inventory, silo roof installation.Shortcoming
It is installation maintenance inconvenience, failure is more, short life, it is impossible to continuously display.
Damp type level-sensing device is to infer installation point either with or without material, bulkhead peace according to the rotary resistance size of measurement motor
Dress.Shortcoming is that installation maintenance is inconvenient, short life, it is impossible to continuously display.
Utility model content
The advantages of in order to retain any of the above mode, the shortcomings that overcoming any of the above mode, the utility model provide a kind of
Indirect Weighing type level-sensing device.
To achieve these goals, technical solution adopted in the utility model is：
Indirect Weighing type level-sensing device including stress in the support device of raw material cabin, further includes weighing sensor, is passed weighing
Transmission rod is threadedly coupled on sensor, the weighing instrument being electrically connected with weighing sensor is further included, raw material cabin is shown on weighing instrument
Weight.
Upper bracket and undersetting are equipped on the vertical direction of the side of support device, lower branch is fixed in transmission rod lower end
On seat, weighing sensor is fixed under upper bracket, and transmission rod upper end is threadedly coupled with weighing sensor.
The transmission rod upper and lower side is machined with external screw thread, and transmission rod upper end is connect with weighing sensor internal thread, power transmission
Bar lower end is fixed by two adjusting nuts with undersetting, and two adjusting nuts are located at the upper and lower of undersetting respectively.
The weighing sensor is common resistance strain weighing transducer.
The support device is located at the lower section of raw material cabin.
The beneficial effects of the utility model：This level-sensing device scheme is compared with resistance rotation type and mechanical type level-sensing device, without machinery
Movement, convenient for installation and maintenance, service life is long, continuously displays, and reliability is high.This level-sensing device scheme and radio frequency admittance level-sensing device ratio
Compared with advantage is not influenced by environment and material properties, and performance is stablized, long lifespan, and not upper silo roof installation, installation maintenance is more
It is convenient.It employs general purpose transducer and facilitates the dowel bar structure of adjusting, the scope of application is wider, and materials are easier for installation, more
Easily promote the use of.The utility model does not influence support device structure, safety, is not weighed scope limitation by sensor, at low cost, more
Easily promote.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Specific embodiment
The utility model is described further with reference to embodiment.
As shown in Figure 1, this level-sensing device scheme is suitable for the material using uniform material（Such as steel）Do support device
Each plant feed bin, such as cement bin, coal ash storehouse, feed bin, silo and various wet tanks use.The technical program had both been suitble to new
Feed bin uses, and is also suitable old material storehouse add-assembly.
This level-sensing device structure as shown in drawings, in the support device 1 of raw material cabin, has been fixedly secured upper bracket 3 and lower branch
Seat 7, fixes general weighing sensor 4 with fixing screws 2 on upper bracket 3, is used between weighing sensor 4 and undersetting 7
Adjusting nut 8 installs transmission rod 6, and there is screw thread at 6 both ends of transmission rod, and transmission rod upper end is threadedly coupled with weighing sensor 4, biography of weighing
The signal wire connection universal weighing instrument 5 of sensor 4.
According to Hooke's law, for solid material in elastic limit, the deformation of object is directly proportional with deformed external force.Material
When how much material changes in storehouse, stress suffered by support device 1 can occur to change accordingly, so as in upper bracket 3 and lower branch
Support device position between seat 7, can generate corresponding deformation,（That is the length of that section of support device between two bearings
Short to change, object between can be compressed or be stretched, we are by transmission rod and weighing sensor, this
A compression or stretching detected, and indirectly extrapolate the size of support device stress, also just indirectly detected in storehouse
The number of material）The deformation then by transmission rod 6, is accurately transferred to weighing sensor 4, weighing sensor 4 is then to weighing instrument 5
Corresponding signal is sent out, weighed instrument 5 handles the variation for just accurately showing material is how many in discharging bin, realizes real-time display
The purpose of material position.
Embodiment one
If support device is steel part, elasticity modulus 210000MPa, area 10000mm2, spacing between two bearings
300mm, material increases by 100 tons in storehouse（Pressure 1000000N）.
Compression strain between two bearings is：Pressure/area/elasticity modulus=1000000/10000/210000=
0.000476mm/mm；
Total compression deflection is between two bearings：Strain * spacing=0.000476*300=0.1428mm.
Two bearings and between sensor, transmission rod be screwed connection.Spacing between two bearings can reduce
0.1428mm, for transmission rod compared with sensor, transmission rod is considered as incompressible, such sensor meeting compressive deformation 0.1428mm.
Small deformation signal is changed into the function of digital signal, exactly sensor and measuring instrument, then is handled by calibration, in this way
We will see showing for 100 tons of materials on measuring instrument.
Change the length of transmission rod 6, the distance between upper bracket 3 and undersetting 7 can be changed, make total deformation in biography of weighing
Within the deformation range that sensor 4 allows.Adjusting nut 8 both for fixing force transfer bar 6, is also adjusted for zero.
The advantages of basic principle, main feature and the utility model of the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Only illustrate the principle of the utility model, it is on the premise of not departing from the spirit and scope of the utility model, in the art common
Technical staff simple change and to replace all be within the scope of protection of the utility model.
Claims (5)
1. indirect Weighing type level-sensing device, it is characterised in that：Including stress in the support device of raw material cabin（1）, further include biography of weighing
Sensor（4）, weighing sensor（4）Under be threaded with transmission rod（6）, further include and weighing sensor（4）Electrical connection is weighed
Instrument（5）, weighing instrument（5）The weight of upper display raw material cabin.
2. indirect Weighing type level-sensing device according to claim 1, it is characterised in that：In support device（1）Side it is perpendicular
Nogata is equipped with upper bracket upwards（3）And undersetting（7）, transmission rod（6）Lower end is fixed on undersetting（7）On, weighing sensor（4）
It is fixed on upper bracket（3）Lower end, transmission rod（6）Upper end and weighing sensor（4）It is threadedly coupled.
3. indirect Weighing type level-sensing device according to claim 1 or 2, it is characterised in that：The transmission rod（6）Upper and lower side
It is machined with external screw thread, transmission rod（6）Lower end passes through two adjusting nuts（8）With undersetting（7）It is fixed, and two adjusting nuts（8）Point
It Wei Yu not undersetting（7）Upper and lower.
4. indirect Weighing type level-sensing device according to claim 3, it is characterised in that：The weighing sensor（4）As
Common resistance strain weighing transducer.
5. indirect Weighing type level-sensing device according to claim 1, it is characterised in that：The support device is located at raw material cabin
Lower section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721695264.9U CN207502022U (en) | 2017-12-08 | 2017-12-08 | Indirect Weighing type level-sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721695264.9U CN207502022U (en) | 2017-12-08 | 2017-12-08 | Indirect Weighing type level-sensing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207502022U true CN207502022U (en) | 2018-06-15 |
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ID=62509213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721695264.9U Active CN207502022U (en) | 2017-12-08 | 2017-12-08 | Indirect Weighing type level-sensing device |
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| CN (1) | CN207502022U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110354980A (en) * | 2019-08-20 | 2019-10-22 | 中粮工程装备（张家口）有限公司 | A kind of flour mill feeding altitude measurement system |
-
2017
- 2017-12-08 CN CN201721695264.9U patent/CN207502022U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110354980A (en) * | 2019-08-20 | 2019-10-22 | 中粮工程装备（张家口）有限公司 | A kind of flour mill feeding altitude measurement system |
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