CN113138010A - Coal storage quantity metering and weighing device for coal storage Euro bunker - Google Patents

Abstract

The invention relates to a coal storage quantity metering and weighing device for a coal storage Euro bin, which comprises a plurality of metering and weighing modules, wherein each metering and weighing module comprises a scale body, a scale platform and a weighing sensor, the scale body is of a box body structure with an opening at one end and is fixed at the bottom of a barrel body of the Euro bin, the scale platform is of a box body structure and is matched with the scale body, the scale platform is arranged in the scale body and forms a first cavity with the scale body, a pressure transmitting head positioned in the first cavity is arranged on the scale platform, the weighing sensor is arranged in the first cavity, one end of the weighing sensor is fixed on the scale body through a sensor fixing seat, and the other end of the weighing sensor is contacted with the pressure transmitting head. Compared with the prior art, the invention has the advantages of high precision, good accuracy, high reliability, real-time measurement, simple and convenient assembly and disassembly, no influence by coal states and contribution to accurately managing production.

Description

Coal storage quantity metering and weighing device for coal storage Euro bunker

Technical Field

The invention relates to a coal storage technology, in particular to a coal storage quantity metering and weighing device for a coal storage Euro bin.

Background

The Euro coal storage is the latest domestic coal storage mode and has the characteristics of small occupied area, energy conservation, consumption reduction, environmental protection. In foreign countries, the coal storage capacity of the coal stored in the euro bunker is always determined by measuring the coal stacking height in the bunker.

Referring to fig. 1, a silo top trestle 3 is arranged at the top of a barrel 1 of an Euro silo, a belt conveyor is arranged in the silo top trestle 3, a rotary trestle 4, a central telescopic blanking pipe 6, a spiral frame 8 and an A-shaped frame 11 are arranged in the barrel 1, the spiral frame 8 and the A-shaped frame 11 are hung on the rotary trestle 4 through a lifting steel wire rope 7 and a winch, the spiral frame 8 is connected with the A-shaped frame 11, the spiral frame 8 is provided with a spiral machine 9, the rotary trestle 4 is arranged on an annular track on the inner side wall of the barrel 1 through a travelling mechanism 5, the center of the rotary trestle 4 is provided with a central winch platform 12, the central telescopic blanking pipe 6 is coaxial with the barrel 1 and penetrates through the central winch platform 12, the upper end of the central telescopic blanking pipe 6 is aligned with a feed inlet 2 on the silo top trestle 3, the lower end is connected with the spiral machine 9 through a guide chute, the guide chute is provided with a guide chute 10, coal is conveyed to the feed inlet 2 through the belt conveyor, and the coal is conveyed to a screw machine 9 through a central telescopic blanking pipe 6, and falls into the cylinder body 1 from a blanking port of the screw machine 9. The spiral machine 9 rotates along with the rotation of the rotary trestle 4, and meanwhile, the lifting steel wire rope 7 is used for lifting, so that coal can be uniformly stored in the cylinder body 1, the central telescopic blanking pipe 6 is formed by concentrically connecting a plurality of sections of round pipes with different diameters and can be expanded or contracted section by section, and the distance between the two ends of the central telescopic blanking pipe 6 can be changed along with the change of the distance between the rotary trestle 4 and the spiral frame 8.

The rotary screw machine 9 can stack and pave coal falling to the bottom of the barrel body 1 along the circumference of the radius direction from the center, the stacked coal can keep the same horizontal height, after the screw machine 9 stacks the coal to the circumference until the inner wall of the bin, the rotary trestle 4 can move for a distance along the circumference direction under the driving of the walking mechanism 5, the spiral frame 8 rotates along with the rotation of the rotary trestle 4, after the coal is rotated for a certain angle, the coal entering the bin can be stacked from the center to the direction of the circumferential trestle wall, the operation is repeated until the coal in the barrel body 1 is stacked to the same horizontal height, at the moment, the lifting steel wire rope 7 enables the spiral frame 8 to do lifting motion through the winch, and after the coal is lifted for a certain height, the process of stacking the coal is repeated. In a word, when coal is fed into the silo for stacking, the equipment in the Euro silo can stack the coal fed into the silo into a coal pile consistent with the inner cylindrical space of the cylinder body 1, the upper surface of the coal pile can be kept to be a relatively horizontal plane all the time, and meanwhile, a blanking hole is formed in the center of the coal pile. When the coal is delivered out of the bin, the screw machine 9 rotates reversely, the coal on the upper surface of the coal pile is scraped to the central position along the radius direction, and falls to the coal dropping hopper 14 from the blanking hole, and is delivered out of the bin from the coal dropping hopper 14, and the surface of the scraped coal pile is still a horizontal plane. Therefore, the upper surface of the coal pile in the Euro bunker is always kept in a horizontal plane state no matter when the coal is fed into the bunker for stacking or taken out of the bunker for taking materials.

The quality of coal in the Euro bin, namely the coal storage amount, needs to be measured in the running process of the coal storage, the coal storage condition in the bin can be determined by measuring the coal storage amount, so as to determine when the bunker needs to be supplemented, otherwise, the situation that the coal entering the factory cannot be unloaded into the bunker in time due to the insufficient volume of the coal which can be loaded in the Euro bunker and has more coal can occur, if the coal is transported by ship, the ship cost is generated, the same problem exists in other vehicles, the coal consumption of power generation can be determined by measuring the coal storage quantity change value in the Euro bin in the thermal power plant, in addition, the change numerical value of the coal storage quantity in the Euro bunker can also reflect the change condition of the power generation cost, in a word, the coal storage quantity in the Euro bunker is very important production data for a thermal power plant, the accurate measurement of the coal storage quantity is favorable for scientific management of the production process of a power generation enterprise, and the economic benefit is determined.

Because the upper surface of coal in the Euro bin can be regarded as a horizontal plane, even if the upper surface of the coal pile is uneven after discharging, the upper surface of the coal pile can be leveled by the screw machine 9 to form a horizontal plane, and the coal pile in the whole bin is in a cylinder shape, the volume of the coal pile can be accurately determined as long as the height of the coal in the Euro bin is determined, namely the difference between the height of the coal which is accumulated from the bottom of the bin and the height of the coal which is finally accumulated is the actual height of the coal pile, because the screw machine 9 is close to the upper surface of the coal pile, the height of the spiral frame 8 can be determined by measuring the length of the lifting steel wire rope 7, and the measuring device is arranged on the winch, the value can be accurately determined, and the height of the coal pile in the Euro bin can be directly obtained.

However, although the coal entering the euro silo does not change position due to other forces and is basically in a static state, because the coal stacking height in the euro silo is very high and can reach as high as 42.5 meters, the coal on the upper layer of the coal pile can be gradually compacted when being stacked, the compactness of the coal between the upper surface of the coal pile and the lower bottom surface of the coal pile is in a gradient relation with the height of the coal, so the compactness of the coal pile is gradually increased from top to bottom, the coal with the same volume is taken out at different heights, the actual coal quality is different, in addition, along with the increase of the storage time of the coal stored in the euro silo, the external moisture of the coal can also flow to the lower part and finally flows out through a drainage pipeline at the bottom of the coal pile, the coal storage amount in the coal pile can also change, the density of the whole coal pile is difficult to determine, and the error of the method for determining the coal storage amount by simply determining the height of the coal pile in the coal pile is large, and the larger the coal storage quantity is, the higher the coal pile height is, the larger the error is, and the actual production requirement cannot be met.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide the coal storage quantity metering and weighing device for the coal storage Euro bin, which has the advantages of high precision, good accuracy, high reliability, real-time measurement, simple and convenient assembly and disassembly, is not influenced by the coal state and is beneficial to accurately managing production.

The purpose of the invention can be realized by the following technical scheme:

a coal storage amount metering and weighing device for a coal storage Euro bunker comprises a plurality of metering and weighing modules, wherein each metering and weighing module comprises a weighing body, a weighing platform and a weighing sensor, the weighing body is of a box body structure with an opening at one end and is fixed at the bottom of a barrel body of the Euro bunker, the weighing platform is of a box body structure and is matched with the weighing body, the weighing platform is arranged in the weighing body and forms a first cavity with the weighing body, a pressure transmission head positioned in the first cavity is arranged on the weighing platform, the weighing sensor is arranged in the first cavity, one end of the weighing sensor is fixed on the weighing body through a sensor fixing seat, and the other end of the weighing sensor is contacted with the pressure transmission head;

the compactness of the coal pile in the cylinder body is in gradient change in the vertical direction and is kept consistent in the horizontal direction, so that the pressure from the coal pile at each position of the bottom of the cylinder body is the same, the pressure borne in a limited area on the bottom of the cylinder body is measured only by the metering and weighing module, the total coal storage amount in the silo is obtained according to the area of the bottom of the cylinder body, the influence of the coal state is avoided, the precision and the reliability are high, the original structure of the Euro silo is not changed, the normal operation of the Euro silo is not influenced, and meanwhile, the metering and weighing module can measure in real time, so that the coal amount entering and leaving the silo at each time can be obtained, and the accurate management and production are facilitated;

the bottom of the cylinder body is provided with the plurality of metering and weighing modules, the coal quantity is respectively measured through the plurality of metering and weighing modules, and then comprehensive evaluation is carried out, so that the accuracy of the measuring result is improved.

Meanwhile, the scale body and the scale platform are two independent structural bodies, so that the scale body and the scale platform are convenient to disassemble and take out the weighing sensor to be maintained and calibrated under the condition that coal in the cylinder body is emptied;

because the compactness of the coal pile in the cylinder is kept consistent in the horizontal direction, and the compactness of the coal pile in the cylinder is in gradient change in the vertical direction, the pressure on the inner side wall of the cylinder is also in gradient change, so that the pressure borne by the position, which is positioned at the same height with the bottom of the cylinder, on the inner side wall of the cylinder is equal to the pressure measured by the metering weighing module and is the maximum value, when the pressure value is close to a limit value, the coal is stopped to enter a bin, or the coal is taken out as soon as possible, the safety of the cylinder is guaranteed, and the early warning function is achieved.

Furthermore, the upper surface of the weighing platform is flush with one end of the opening of the weighing body.

Further, the device still include scale platform clamp plate, scale body clamp plate and flexible sealing member, scale body opening one end be equipped with sealing flange, flexible sealing member set up gap department between scale body opening one end and scale platform upper surface, scale platform clamp plate, flexible sealing member and scale platform connect gradually through the bolt, scale body clamp plate, flexible sealing member and sealing flange connect gradually through the bolt, ensure that flexible sealing member can shield the seam of scale platform and scale body opening one end, prevent that water, gas or coal granule from getting into in the first cavity.

Further, the weighing platform lateral wall be equipped with the support protrusion, the weighing body inside wall be equipped with support protrusion assorted dislocation recess, the support protrusion locate in the dislocation recess, the dislocation recess support the weighing platform through the support protrusion, avoid the weight direct action of coal on flexible sealing member, but the lower part of flexible sealing member does not have any support yet to lead to flexible sealing member to take place to cut damage and the fracture, improved the life of flexible sealing member.

Further, the weighing platform lateral wall evenly be equipped with a plurality of locating piece, locating piece and the internal side wall of balance keep 1 ~ 3 mm's distance, guarantee during the installation that the interval between each side of weighing platform and the internal side wall of balance all equals, avoid the contact of weighing platform lateral wall and the internal side wall of balance, produce frictional resistance, influence measuring result.

Further, weighing sensor's terminal surface be equipped with pass the pressure circular arc surface that the pressure head tip matches, pass pressure head tip and contact of pressure circular arc surface, guarantee to pass the pressure head and only apply vertical decurrent effort to weighing sensor, guarantee weighing sensor normal work, improved measurement accuracy.

Furthermore, a second cavity is formed in the weighing platform, so that the weight of the weighing platform is reduced, a stiffening rib is arranged in the second cavity, the rigidity of the weighing platform is improved, and the rigidity of the weighing platform can meet the requirement that the weighing platform cannot deform under the action of pressure generated after coal is accumulated in the Euro bin.

Further, the balance in vivo be equipped with the cable box for the access with fixed output cable who is connected with weighing sensor, balance external side wall be equipped with cable output line coupling, through cable output line coupling with the signal line contact, the leakproofness is good, prevent that barrel bottom ponding from getting into in the balance, the security is good.

Furthermore, the scale body is fixed at the bottom of the barrel through a fixed foot.

Furthermore, the number of the weighing sensors is multiple, and the weighing sensors are symmetrically arranged on the scale body to form a stable supporting plane, so that the pressure borne by the weighing platform can be completely supported.

Compared with the prior art, the invention has the following beneficial effects:

(1) the invention comprises a metering and weighing module, the metering and weighing module comprises a scale body, a scale platform and a weighing sensor, the scale body is of a box body structure with an opening at one end and is fixed at the bottom of a cylinder body of an Euro bin, the scale platform is of a box body structure and is matched with the scale body, the scale platform is arranged in the scale body and forms a first cavity with the scale body, a pressure transmitting head is arranged on the scale platform and is positioned in the first cavity, the weighing sensor is arranged in the first cavity, one end of the weighing sensor is fixed on the scale body through a sensor fixing seat, the other end of the weighing sensor is contacted with the pressure transmitting head, the scale platform transmits the weight of coal borne by the upper surface of the scale platform to the weighing sensor through the pressure transmitting head, the weighing sensor generates an electric signal and transmits the electric signal to a control system and converts the electric signal into a corresponding weight reading, thereby obtaining a coal storage capacity value, the compactness of a coal pile in the cylinder body is in a gradient change in a vertical direction and is kept consistent in a horizontal direction, therefore, the pressure from the coal pile on each position of the bottom of the cylinder body is the same, the pressure born in a limited area on the bottom of the cylinder body is measured only by the metering and weighing module, the total coal storage amount in the silo is obtained according to the area of the bottom of the cylinder body and is not influenced by the coal state, and the weighing sensor is in a fully sealed environment, so that the influence of the coal state and the silo bottom environment is avoided, the precision and the reliability are high, the original structure of the Euro silo is not changed, the normal operation of the Euro silo is not influenced, and meanwhile, the metering and weighing module can measure in real time, so that the coal amount entering and leaving the silo at each time can be obtained, and the accurate management and production are facilitated;

(2) the scale body and the scale platform are two independent structural bodies, so that the scale body and the scale platform are convenient to disassemble under the condition of emptying coal in the cylinder body, a weighing sensor needing to be maintained and calibrated is taken out, or weights can be directly placed on the scale platform to calibrate the accuracy of the weighing device, and the calibration and the disassembly and assembly are simple and convenient;

(3) according to the invention, the bottom of the cylinder body is provided with the plurality of metering and weighing modules, the coal quantity is respectively measured through the plurality of metering and weighing modules, and then comprehensive evaluation is carried out, so that the accuracy of the measurement result is improved;

(4) the pressure born by the bottom of the side wall of the cylinder body can be known by measuring the pressure generated by the coal pile at the bottom of the cylinder body, and when the pressure is close to a limit value, the coal is stopped to enter the bin or is taken out as soon as possible, so that the safety of the cylinder body is guaranteed;

(5) the upper surface of the weighing platform is flush with one end of the opening of the weighing body, one end of the opening of the weighing body is provided with a sealing flange, a flexible sealing element is arranged at a gap between one end of the opening of the weighing body and the upper surface of the weighing platform, a weighing platform pressing plate, the flexible sealing element and the weighing platform are sequentially connected through bolts, the weighing platform pressing plate, the flexible sealing element and the sealing flange are sequentially connected through bolts, the flexible sealing element can shield the seam between the weighing platform and one end of the opening of the weighing body, and water, gas or coal particles are prevented from entering a first cavity;

(6) according to the flexible sealing piece, the supporting bulge is arranged on the side wall of the weighing platform, the staggered groove matched with the supporting bulge is formed in the inner side wall of the weighing body, the supporting bulge is arranged in the staggered groove, and the staggered groove supports the weighing platform through the supporting bulge, so that the situation that the flexible sealing piece is sheared and damaged to crack due to the fact that the weight of coal directly acts on the flexible sealing piece is avoided, and the service life of the flexible sealing piece is prolonged;

(7) according to the invention, the outer side wall of the weighing platform is uniformly provided with a plurality of positioning blocks, the positioning blocks and the inner side wall of the weighing body keep a distance of 1-3 mm, so that the distances between each side edge of the weighing platform and the inner side wall of the weighing body are equal, and the outer side wall of the weighing platform is prevented from contacting with the inner side wall of the weighing body to generate friction resistance or deformation extrusion to influence the measurement precision;

(8) the weighing sensor is cylindrical, the center of the end face of the weighing sensor is provided with the pressed arc surface matched with the end part of the pressure transmission head, and the end part of the pressure transmission head is contacted with the pressed arc surface, so that the pressure transmission head is ensured to apply vertical and downward acting force to the weighing sensor only, the normal work of the weighing sensor is ensured, and the measurement precision is improved;

(9) the second cavity is arranged in the weighing platform, so that the weight of the weighing platform is reduced, and the stiffening ribs are arranged in the second cavity, so that the rigidity of the weighing platform is improved;

(10) the scale body is internally provided with the cable box which is used for connecting and fixing the output cable connected with the weighing sensor, the outer side wall of the scale body is provided with the cable output line pipe joint, the signal line is contacted through the cable output line pipe joint, the sealing performance is good, the accumulated water at the bottom of the cylinder body is prevented from entering the scale body, and the safety is good;

(11) according to the invention, the scale body is further fixed at the bottom of the barrel through the fixed feet, so that the scale body is prevented from moving;

(12) the weighing platform comprises a plurality of weighing sensors, and the weighing sensors are symmetrically arranged on the platform body to form a stable supporting plane.

Drawings

FIG. 1 is a schematic diagram of a Euro cabin;

FIG. 2 is a schematic structural diagram of a metering and weighing module;

FIG. 3 is a schematic view of the installation position of the metering and weighing module;

FIG. 4 is a schematic perspective view of the scale body;

FIG. 5 is a schematic perspective view of the weighing platform;

FIG. 6 is a cross-sectional view of a metering weighing module;

FIG. 7 is a schematic view of the installation position of the flexible seal;

FIG. 8 is a schematic perspective view of a load cell;

the reference numbers in the figures illustrate:

1. the coal mine underground, 17-1, a supporting protrusion, 17-2, a pressure transmission head, 17-3, a positioning block, 21-1, a pressed circular arc surface, 21-2, an output cable and 21-3, a second bolt hole.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

A coal storage amount metering and weighing device for a coal storage Euro bunker comprises 3 metering and weighing modules 15, each metering and weighing module 15 comprises a weighing body 16, a weighing platform 17 and a weighing sensor 21, the weighing body 16 and the weighing platform 17 are made of stainless steel, the weighing body 16 is of a box structure with an opening at one end and is fixed on a concrete foundation at the bottom of a barrel 1 through fixing feet 16-6 arranged on the side wall of the weighing body, the weighing platform 17 is of a box structure and is matched with the weighing body 16, the weighing platform 17 is arranged in the weighing body 16 and forms a first cavity with the weighing body 16, the upper surface of the weighing platform 17 is flush with the opening end of the weighing body 16, a pressure transmission head 17-2 positioned in the first cavity is arranged on the weighing platform 17, the weighing sensor 21 is arranged in the first cavity, one end of the weighing sensor is fixed on the weighing body 16 through a sensor fixing seat 16-3, the other end is contacted with a pressure transmission head 17-2;

when coal is accumulated in the barrel body 1, the coal is accumulated on the upper surface of the weighing platform 17, the weighing platform 17 transfers the weight of the coal borne by the upper surface of the weighing platform to the weighing sensor 21 through the pressure transfer head 17-2, and the weighing sensor 21 generates an electric signal, transmits the electric signal to the control system through a signal cable and converts the electric signal into a corresponding weight reading.

The rotary trestle 4 drives the screw machine 9 on the spiral frame 8 to rotate, the coal fed into the bin from the central telescopic blanking pipe 6 is uniformly paved on the horizontal round surface of the coal pile layer by layer, the spiral frame 8 rises for a certain distance after the coal pile is paved for one layer, the screw machine 9 on the spiral frame 8 moves upwards at the same time, the requirement of secondary paving is met, the coal does not directly impact the coal pile in the process, and the compactness of the coal pile is not influenced, so that the compactness of the coal pile on the same horizontal height in the barrel body 1 is the same, but along with the continuous increase of the height of the coal pile, the coal on the upper layer can generate gravity pressure accumulation effect on the coal on the lower layer, so that the compactness of the coal on the lower layer is greater than that of the upper layer, and the compactness of the coal pile in the barrel body 1 presents the characteristic of gradient change in the vertical direction and keeps the consistency in the horizontal direction;

therefore, the pressure from the coal pile at each position of the bottom of the cylinder body 1 is the same, the pressure born in a limited area on the bottom of the cylinder body 1 only needs to be measured by the metering and weighing module 15, the total coal storage amount in the silo is obtained according to the area of the bottom of the cylinder body 1, the coal storage amount is not influenced by the coal state, the precision is high, the reliability is high, the original structure of the Euro silo is not changed, the normal operation of the Euro silo is not influenced, meanwhile, the metering and weighing module 15 can measure in real time, therefore, the coal amount entering and leaving the silo at each time can be obtained, and the accurate management production is facilitated.

3 metering and weighing modules 15 are arranged at the bottom of the barrel 1, the coal amount is measured by the 3 metering and weighing modules 15 respectively, and then comprehensive evaluation is carried out, so that the accuracy of the measuring result is improved.

The scale body 16 and the scale platform 17 are two independent metal structural bodies, are convenient to disassemble under the condition that coal in the cylinder body 1 is emptied, and take out the weighing sensor 21 which needs to be maintained and calibrated.

As shown in fig. 7, the device further comprises a weighing platform pressing plate 18, a weighing body pressing plate 19 and a flexible sealing element 20, wherein the weighing platform pressing plate 18 and the weighing body pressing plate 19 are both in a square ring shape, a sealing flange 16-1 is arranged at one end of an opening of the weighing body 16, the flexible sealing element 20 is arranged at a gap between one end of the opening of the weighing body 16 and the upper surface of the weighing platform 17, the weighing platform pressing plate 18, the flexible sealing element 20 and the weighing platform 17 are sequentially connected through bolts, the weighing body pressing plate 19, the flexible sealing element 20 and the sealing flange 16-1 are sequentially connected through bolts, so that the flexible sealing element 20 can shield the seam between the weighing platform 17 and the opening one end of the weighing body 16, water, gas or coal particles are prevented from entering the first cavity, and damage or interference to components in the first cavity is avoided.

The upper surface of the weighing platform 17 is matched with the maximum material taking depth of the screw machine 9, namely the screw machine 9 cannot touch the metering weighing module 15 when in the limit position, and the safe distance is kept.

The flexible sealing element 20 is made of elastic and extensible polymer materials or rubber, has the characteristics of stable performance, acid and alkali resistance and water resistance, does not chemically react with coal or various chemical substances carried by the coal, and has the advantages of long service life, good stability and good sealing property.

The side wall of the weighing platform 17 is provided with a supporting bulge 17-1, the inner side wall of the weighing body 16 is provided with a staggered groove 16-7 matched with the supporting bulge 17-1, the supporting bulge 17-1 is arranged in the staggered groove 16-7, and the staggered groove 16-7 supports the weighing platform 17 through the supporting bulge 17-1, so that the weight of coal is prevented from directly acting on the flexible sealing element 20, the flexible sealing element 20 is prevented from being sheared and damaged to crack, and the service life of the flexible sealing element 20 is prolonged.

The side wall of the weighing platform 17 is uniformly provided with 8 positioning blocks 17-5, two positioning blocks 17-5 are distributed on each side wall of the weighing platform 17, the positioning blocks 17-5 and the inner side wall of the weighing body 16 keep a distance of 1-3 mm, the distance between each side wall of the weighing platform 17 and the inner side wall of the weighing body 16 is guaranteed to be equal, and the outer side wall of the weighing platform 17 is prevented from contacting with the inner side wall of the weighing body 16 to generate friction resistance or deformation extrusion to influence the measurement precision.

The balance body 16 is internally provided with 4 weighing sensors 21, and the 4 weighing sensors 21 are arranged at four corners to form a stable supporting plane, so that the pressure born by the weighing platform 17 can be completely supported.

As shown in fig. 8, the weighing sensor 21 is cylindrical, the center of the end face of the weighing sensor 21 is provided with a pressed arc surface 21-1 matched with the end of the pressure transmission head 17-2, and the end of the pressure transmission head 17-2 is in contact with the pressed arc surface 21-1, so that the pressure transmission head 17-2 is ensured to apply a vertical downward acting force to the weighing sensor 21, the normal work of the weighing sensor 21 is ensured, and the measurement precision is improved.

The weighing sensor 21 is uniformly and symmetrically provided with a plurality of second bolt holes 21-3, the sensor fixing seat 16-3 is uniformly and symmetrically provided with a plurality of first bolt holes 16-5 matched with the second bolt holes 21-3, and the weighing sensor 21 is fixed on the sensor fixing seat 16-3 through hexagon socket head bolts penetrating through the second bolt holes 21-3 and the first bolt holes 16-5, so that the weighing sensor 21 is prevented from displacing in any direction, and the measurement precision and reliability are improved.

As shown in fig. 6, the second cavity 22 is provided in the weighing platform 17 to reduce the weight of the weighing platform 17, and the stiffening rib 23 is provided in the second cavity 22 to improve the rigidity of the weighing platform 17, so that the weighing platform is not easily deformed or damaged.

The inside of the scale body 16 is provided with a cable box 16-4 for connecting and fixing an output cable 21-2 connected with the weighing sensor 21, the outer side wall of the scale body 16 is provided with a cable output line connector 16-2, a signal line is contacted through the cable output line connector 16-2, the sealing performance is good, accumulated water at the bottom of the cylinder body 1 is prevented from entering the scale body 16, the safety is good, the cable output line pipe is protected by a metal sleeve and penetrates into an underground coal conveying gallery through the side wall of the coal hopper 14, and the phenomenon that the bottom of the cylinder body 1 is directly drilled to cause structural damage is avoided.

The bottom of the Euro bin barrel body 1 is of a concrete structure, a goose soft stone stack is laid on the bottom of the barrel body 1, a drainage pipeline is installed in the goose soft stone stack and is guided into an underground coal conveying gallery below the Euro bin, permeable cloth is laid on the goose soft stone stack, coal is stacked above the permeable cloth, a scale body 16 is fixed on the concrete bottom of the barrel body 1, and the upper surface of a scale platform 17 is vertical to the gravity direction of the coal stack.

This embodiment has provided a coal storage volume measurement weighing device for stored coal euro storehouse, the compactness degree that utilizes the coal pile in barrel 1 presents the gradient change in vertical direction, keep unanimous characteristics in the horizontal direction, set up a plurality of measurement weighing module 15 in barrel 1 bottom, measure the pressure that bears in the last limited region in barrel bottom through measurement weighing module 15, try to get the total coal storage volume in the storehouse according to barrel 1 bottom area again, do not receive the influence of coal state, the precision is high, the reliability is high, do not change the original structure in euro storehouse simultaneously, do not influence the normal operating in euro storehouse, measurement weighing module 15 can real-time measurement simultaneously, consequently, can acquire the coal volume of advancing the storehouse and going out of the storehouse at every turn, be favorable to managing production accurately.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims (10)

1.A coal storage quantity metering and weighing device for a coal storage Euro bunker is characterized by comprising a plurality of metering and weighing modules (15), each metering and weighing module (15) comprises a scale body (16), a scale platform (17) and a weighing sensor (21), the scale body (16) is of a box body structure with an opening at one end, and is fixed at the bottom of the cylinder body (1) of the Euro bin, the weighing platform (17) is of a box body structure, and is matched with the scale body (16), the scale platform (17) is arranged in the scale body (16), a first cavity is formed between the weighing platform and the weighing body (16), a pressure transmitting head (17-2) positioned in the first cavity is arranged on the weighing platform (17), the weighing sensor (21) is arranged in the first cavity, one end of the sensor is fixed on the scale body (16) through a sensor fixing seat (16-3), and the other end of the sensor is contacted with a pressure transmitting head (17-2).

2. The coal storage quantity measuring and weighing device for the coal storage Euro bin is characterized in that the upper surface of the weighing platform (17) is flush with the open end of the weighing body (16).

3. The coal storage quantity metering and weighing device for the coal storage Euro bunker of claim 1, further comprising a weighing platform pressing plate (18), a weighing body pressing plate (19) and a flexible sealing element (20), wherein a sealing flange (16-1) is arranged at one end of an opening of the weighing body (16), the flexible sealing element (20) is arranged at a gap between one end of the opening of the weighing body (16) and the upper surface of the weighing platform (17), the weighing platform pressing plate (18), the flexible sealing element (20) and the weighing platform (17) are sequentially connected through bolts, and the weighing body pressing plate (19), the flexible sealing element (20) and the sealing flange (16-1) are sequentially connected through bolts.

4. The coal storage quantity metering and weighing device for the coal storage Euro bunker of claim 1, characterized in that the side wall of the weighing platform (17) is provided with a supporting protrusion (17-1), the side wall of the weighing body (16) is provided with a staggered groove (16-7) matched with the supporting protrusion (17-1), and the supporting protrusion (17-1) is arranged in the staggered groove (16-7).

5. The coal storage quantity metering and weighing device for the coal storage Euro bunker of claim 1, characterized in that a plurality of positioning blocks (17-5) are uniformly arranged on the outer side wall of the weighing platform (17).

6. The coal storage quantity metering and weighing device for the coal storage Euro bunker of claim 1, characterized in that the end face of the weighing sensor (21) is provided with a pressure circular arc face (21-1) matched with the end of the pressure head (17-2), and the end of the pressure head (17-2) is contacted with the pressure circular arc face (21-1).

7. A coal storage euro bunker coal storage quantity measuring and weighing apparatus according to claim 1, characterized in that said weighing platform (17) is provided with a second cavity (22), and said second cavity (22) is provided with a stiffening rib (23).

8. The coal storage quantity metering and weighing device for the coal storage Euro bin is characterized in that a cable box (16-4) is arranged in the scale body (16), and a cable output line connector (16-2) is arranged on the outer side wall of the scale body (16).

9. The coal storage quantity metering and weighing device for the coal storage Euro bunker of claim 1, characterized in that the scale body (16) is fixed at the bottom of the barrel (1) through fixing feet (16-6).

10. The coal storage quantity metering and weighing device for the coal storage Euro bunker of claim 1, characterized in that the number of the weighing sensors (21) is multiple, and the weighing sensors (21) are symmetrically arranged on the scale body (16).

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