CN2189738Y

CN2189738Y - Impact-plate metering balance

Info

Publication number: CN2189738Y
Application number: CN 93246345
Authority: CN
Inventors: 柳昌庆; 韩正桐; 林卫国; 李威; 王茜; 孟繁喜
Original assignee: China University of Mining and Technology CUMT
Current assignee: China University of Mining and Technology CUMT
Priority date: 1993-11-27
Filing date: 1993-11-27
Publication date: 1995-02-15
Anticipated expiration: 2003-11-27

Abstract

The utility model relates to an impact-plate metering balance, which is suitable for the continuous metering of the bulk material. The impact-plate metering balance adopts a rectification hopper which is composed of a current blocking plate, a guiding plate and a current guiding pipe. The lower opening part of the rectification hopper is provided with a detection body, which is composed of a detection plate, a sensor, a support, etc. By the perpendicular component force generated by that the material impacts to the detection plate, a strain gauge load cell is directly converted into the output of the voltage signal, which realizes the detection for the perpendicular component force, and further more, the host machine of a digital display instrument can finish the calculation of the flow quantity and the accumulating weight, the display and other functions. The impact-plate metering balance has simple structure, low manufacture cost, higher precision and favorable stability when making continuous impact type metering for bulk materials, comprising the non-homogeneous bulk, such as the coal, etc.

Description

Impact-plate metering balance

The utility model relates to the shock plate weigher, is particularly useful for the continuous measurement of non-homogeneous bulk material.

Impulse type measuring instrument some developed countries abroad just successfully is applied in the energy seventies, mining industry, chemical industry, industrial sectors such as cereal product, China has also carried out the introduction of this respect the eighties, exploitation, and at cereal product, departments such as industrial chemicals are used, but the non-homogeneous bulk material that object coal is such, adopt the research and the instrument exploitation of impulse type continuous measurement then at the early-stage, existing detection mode of impacting flowmeter adopts detection level component force type structure, its displacement converted mechanism is in its manufacturing, install, structure, reliability, aspects such as the ability that withstands shocks and control survey error all can not obtain satisfying well simultaneously.

In view of the weak point of prior art, the purpose of this utility model provides a kind of shock plate weigher of detection of vertical component force type structure, and it directly converts voltage signal to by resistance strain weighing transducer, so simple in structure, reliable and stable, effective.

The utility model shock plate weigher, it is by a spoiler, and a guide plate adds the rectification bucket that a mozzle constitutes, and there is a tilting check-out console at the end opening place of hopper, be furnished with the corresponding digital Displaying Meter, it is characterized in that: have a sensor on the check-out console; The θ angle of check-out console can be 40～60 degree, and best θ angle is 45 degree; Be provided with a protective housing between support and the hopper, the rectification bucket adopts suspension type, joins with detection bodies, protective housing disengagement or flexibility.

The utility model shock plate weigher, the vertical stress component that utilizes material to impact to produce on the check-out console, directly convert voltage signal to by resistance strain weighing transducer, thereby realize detection to vertical stress component, carry out mass flow is detected and weight accumulative total, sensor on the check-out console is selected parallel beam type resistance strain sensor for use, and its elastic body is that the high-quality weighing apparatus plays aluminum alloy materials; Be welded with a bending plate and T shape gusset on the check-out console, sensor can be with between screw is connected to and check-out console is welded as a whole the T shape gusset and bearing support.Protective housing between support and the hopper is used to protect check-out console not to be subjected to foreign objects collision, extruding, and prevents that dust from overstocking in detection bodies, can remove from support, is convenient to maintenance.Stick on the check-out console for avoiding or reducing tested material, check-out console preferably selects for use stainless steel or aluminium alloy to manufacture.

The utility model shock plate weigher, be applicable to the continuous measurement of bulk material, comprise non-homogeneous bulk cargo, adopt direct detection of vertical component mode structure, prior art with respect to this technical field, do not have complicated displacement converted mechanism, replace range spring action in the displacement converted mechanism, eliminated because of the manufacturing of range spring, the influence that brings is installed by sensor elastomer itself.In addition, select parallel beam type resistance strain sensor for use, output valve is not subjected to the influence of center of effort position in theory, vertical stress component is more responsive to effect material on the check-out console, adopts this pick-up unit and respective digital Displaying Meter, and bulk material such as coal are carried out continuous impulse type metering, its precision is higher, general structure is simple, and cost is low, has wide practical use.

Description of drawings:

Fig. 1 is the utility model structural representation;

Fig. 2 is the utility model check-out console front view;

Fig. 3 is the utility model check-out console right view.

Below in conjunction with accompanying drawing an embodiment of the present utility model is further described:

The utility model shock plate weigher mainly contains rectification, power detection, read out instrument three parts composition, adopts a spoiler, and a guide plate adds the rectification bucket 1 that a mozzle constitutes, and the material rectification is controlled under certain flow velocity.One tilting check-out console 3 is set at the end opening place of hopper 1, the best angle θ of check-out console 3 is 45 degree, the middle part, behind of check-out console 3 is welded with a bending plate 7 and T shape gusset, one sensor 5 is set under it, sensor 5 is selected parallel beam type resistance strain sensor for use, one end of sensor 5 is screwed on T shape gusset, other end bottom is screwed on bearing support 6, when material impacts on the check-out console, its vertical stress component directly converts voltage signal output to by resistance strain weighing transducer 5, realization detects and accumulative total mass flow by read out instrument the detection of vertical stress component again.Be provided with a protective housing 2 between support 4 and the rectification bucket 1, be used to protect check-out console not to be subjected to foreign objects collision extruding, and prevent that dust from overstocking in detection bodies, protective housing 2 can remove from support 4, is convenient to maintenance.Detection bodies bearing support 6 adopts The shape structure, the pedestal channel-section steel has chute, is used to adjust the position of blanking on check-out console, makes drop point the best.Base rack 4 adopts table shape structure, and good stability, steady is mainly used to support detection bodies and protective housing 2.Check-out console 3 usefulness stainless steels are done material, and there is flanging on both sides, are used for fixing flow direction of material.The rectification bucket adopts lifting, itself and detection bodies, protective housing disengagement or flexibility is joined, to eliminate the influence of blanking excitation to signal output.

Claims

1, a kind of shock plate weigher, it is by a spoiler, and a guide plate adds the rectification bucket (1) that mozzle constitutes, and there is a tilting check-out console (3) at the end opening place of rectification bucket (1), be furnished with the corresponding digital Displaying Meter, it is characterized in that: have a sensor (5) on the check-out console (3); The θ angle of check-out console (3) can be 40～60 degree, best θ angle 45 degree; Be provided with a protective housing (2) between detection bodies support (4) and the hopper (1), rectification bucket (1) adopts suspension type, and joins with detection bodies, protective housing (2) disengagement type flexibility.

2, shock plate weigher according to claim 1 is characterized in that: sensor (5) is selected parallel beam type resistance strain sensor for use.

3, shock plate weigher according to claim 1 is characterized in that: the check-out console back is welded with a bending plate (7) and T shape gusset.

4, shock plate weigher according to claim 1 is characterized in that: sensor (5) can be with between screw is connected to and check-out console (3) is welded as a whole the T steel plate and bearing support (6).

5, shock plate weigher according to claim 1 is characterized in that: protective cover (2) can remove from support (4).

6, shock plate weigher according to claim 1 is characterized in that: check-out console (3) preferably selects for use stainless steel or aluminium alloy to manufacture.