CN202631485U - Grain moisture on-line measuring device - Google Patents
Grain moisture on-line measuring device Download PDFInfo
- Publication number
- CN202631485U CN202631485U CN 201220270472 CN201220270472U CN202631485U CN 202631485 U CN202631485 U CN 202631485U CN 201220270472 CN201220270472 CN 201220270472 CN 201220270472 U CN201220270472 U CN 201220270472U CN 202631485 U CN202631485 U CN 202631485U
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- grain moisture
- moisture content
- storehouse
- measuring
- funnel
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Abstract
The utility model discloses a grain moisture on-line measuring device which comprises a base seat. A measuring bin is vertically arranged on the base seat, a hopper is fixed on the top of the measuring bin, a vertically-arranged funnel is arranged under the hopper, the funnel is fixed with the measuring bin through a support, the upper end and the lower end of the funnel are provided with openings, the opening in the lower end is smaller than the opening in the upper end, a microphone is fixed on a side wall of the measuring bin, a sound-absorbing layer is arranged on the inner surface of the side wall of the measuring bin, and a sound-insulating layer is arranged on the outer surface of the side wall of the measuring bin. The grain moisture on-line measuring device is suitable for quick on-spot and on-line grain moisture detection and can give an alarm when moisture content is abnormal. In addition, the grain moisture on-line measuring device is simple in structure and reasonable in design and has good practicability.
Description
Technical field
The utility model relates to a kind of measuring grain moisture content device, is specifically related to a kind of grain moisture content on-line measurement device.
Background technology
The standard method of measurement of grain moisture content is that the grain sample after weighing is placed on temperature is continuous drying 19 hours in 130 ℃ the baking oven; And then the weight of back sample is done in weighing; Calculate the water percentage of grain according to weightlessness; This method wastes time and energy, and therefore causes that people research and develop the very big interest of new, fast and convenient drimeter.Along with science and technology development; Successively various measuring method has been proposed, and corresponding surveying instrument or the equipment of having developed many advanced persons, at present; Method for measuring grain moisture content has electric-resistivity method, capacitance method, equilibrium relative humidity (ERH) method, nuclear magnetic resonance method, microwave method, infrared method, NEUTRON METHOD and Ka Erfeixiufa etc.; Measuring method wherein commonly used is electric-resistivity method and capacitance method, and all is off-line measurement, is not suitable for on-line measurement.Additive method or cost are high, or complex structure, and be not easy to operate, in reality, seldom uses.
The utility model content
The purpose of the utility model is to provide a kind of grain moisture content on-line measurement device, and said grain moisture content on-line measurement device is suitable for on-the-spot onlinely apace grain moisture content is detected.
For realizing above-mentioned purpose, the technical scheme of the utility model is a kind of grain moisture content on-line measurement device of design, comprises base; Perpendicular being equipped with measured the storehouse on the base, and the top of measuring the storehouse is fixed with hopper, is provided with the perpendicular funnel of putting under the hopper; Funnel is fixed with measuring the storehouse through support, and funnel is both ends open up and down, and lower ending opening is littler than lower ending opening; Also be fixed with microphone on the sidewall in measurement storehouse, measure the storehouse inside surface of side wall and be provided with sound absorbing layer, the outside surface of measuring the storehouse sidewall is provided with pugging.
Preferably, said microphone also is connected with signals collecting and disposal system.
Preferably, said signals collecting and disposal system comprise the audio signal analysis appearance.
Preferably, said signals collecting and disposal system also are connected with warning device.
Preferably, also be provided with weighing device on the said base.
Principle: produce vibration during object collision, send sound wave, sound wave can be used parameter characterizations such as its amplitude, frequency, because amplitude is very little, expression inconvenience is just represented with sound pressure level.Sound pressure level is defined as:
Wherein: P.Be reference acoustic pressure, size is 2 * 10
-5Pa;
The principal ingredient of grain seed is starch, water and mineral matter, can with its abstract be an elastomer model.Research shows that the elasticity of seed is relevant with grain moisture content with vibration characteristics.Therefore, when seed and body surface collision, can produce the sound wave of different frequency and amplitude.There is certain funtcional relationship between amplitude (or sound pressure level), frequency and the grain moisture content three of the sound wave that the seed collision produces; Be Lp=F (m; F), for specific grain moisture content, should there be definite funtcional relationship between the sound pressure level of the sound wave that the seed collision is produced and the frequency.Can find out the relation between the three through experimental study.
Funnel is both ends open up and down, and lower ending opening is than both ends open is little up and down, when the grain seed when hopper drops on the funnel, can form grain mass within a short period of time, grain seed that continues to flow down and grain mass collision, generation sound wave.Deliver to signals collecting and disposal system through microphone, measure amplitude (or sound pressure level), the frequency of the sound wave of seed collision generation, thereby calculate grain moisture content.In order to prevent that the grain seed from can run into microphone, therefore, grain seed fall area and microphone distance preferably are 20～50cm.In order to reduce the interference that external acoustic waves and inner acoustic reflection are caused, to measure the storehouse inside surface of side wall and be provided with sound absorbing layer, the outside surface of measuring the storehouse sidewall is provided with pugging.
As unusual moisture value appears, and signals collecting and disposal system are sent signal and are given warning device, and warning device sends warning.
The advantage and the beneficial effect of the utility model are: a kind of grain moisture content on-line measurement device is provided; Said grain moisture content on-line measurement device is suitable for on-the-spot onlinely apace grain moisture content is detected; And can unusual moisture make warning; And this grain moisture content on-line measurement apparatus structure is simple, and is reasonable in design, has good practicability.
Description of drawings
Fig. 1 is the synoptic diagram of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the embodiment of the utility model is further described.Following examples only are used for more clearly explaining the technical scheme of the utility model, and can not limit the protection domain of the utility model with this.
The technical scheme of the utility model practical implementation is:
A kind of grain moisture content on-line measurement device comprises base 1, and perpendicular being equipped with measured storehouse 2 on the base 1; The top of measuring storehouse 2 is fixed with hopper 3, is provided with the perpendicular funnel of putting 4 under the hopper 3, and funnel 4 is fixing with measurement storehouse 2 through support 5; Funnel is both ends open about in the of 4, and lower ending opening is littler than lower ending opening, also is fixed with microphone 6 on the sidewall in measurement storehouse 2; Measure storehouse 2 inside surface of side wall and be provided with sound absorbing layer 7, the outside surface of measuring storehouse 2 sidewalls is provided with pugging 8.Said microphone 6 also is connected with signals collecting and disposal system 9.Said signals collecting and disposal system 9 comprise the audio signal analysis appearance.Said signals collecting and disposal system 9 also are connected with warning device 10.Also be provided with weighing device 11 on the said base 1.
The above only is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model know-why, can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.
Claims (5)
1. a grain moisture content on-line measurement device is characterized in that, comprises base; Perpendicular being equipped with measured the storehouse on the base, and the top of measuring the storehouse is fixed with hopper, is provided with the perpendicular funnel of putting under the hopper; Funnel is fixed with measuring the storehouse through support, and funnel is both ends open up and down, and lower ending opening is littler than lower ending opening; Also be fixed with microphone on the sidewall in measurement storehouse, measure the storehouse inside surface of side wall and be provided with sound absorbing layer, the outside surface of measuring the storehouse sidewall is provided with pugging.
2. grain moisture content on-line measurement device according to claim 1 is characterized in that said microphone also is connected with signals collecting and disposal system.
3. grain moisture content on-line measurement device according to claim 2 is characterized in that said signals collecting and disposal system comprise the audio signal analysis appearance.
4. grain moisture content on-line measurement device according to claim 2 is characterized in that said signals collecting and disposal system also are connected with warning device.
5. grain moisture content on-line measurement device according to claim 1 is characterized in that, also is provided with weighing device on the said base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220270472 CN202631485U (en) | 2012-06-07 | 2012-06-07 | Grain moisture on-line measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220270472 CN202631485U (en) | 2012-06-07 | 2012-06-07 | Grain moisture on-line measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202631485U true CN202631485U (en) | 2012-12-26 |
Family
ID=47384676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220270472 Expired - Fee Related CN202631485U (en) | 2012-06-07 | 2012-06-07 | Grain moisture on-line measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202631485U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470740A (en) * | 2019-09-05 | 2019-11-19 | 中国烟草总公司四川省公司 | A kind of tobacco leaf sound occurs and acquisition device |
| CN113280593A (en) * | 2021-05-31 | 2021-08-20 | 安徽华谷机械科技有限公司 | Intelligent separation type grain dryer |
-
2012
- 2012-06-07 CN CN 201220270472 patent/CN202631485U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470740A (en) * | 2019-09-05 | 2019-11-19 | 中国烟草总公司四川省公司 | A kind of tobacco leaf sound occurs and acquisition device |
| CN110470740B (en) * | 2019-09-05 | 2024-05-17 | 中国烟草总公司四川省公司 | Tobacco sound generation and collection device |
| CN113280593A (en) * | 2021-05-31 | 2021-08-20 | 安徽华谷机械科技有限公司 | Intelligent separation type grain dryer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20130607 |