CN214359104U - Material bin - Google Patents

Abstract

The utility model provides a material storage bin, the lower extreme discharge gate of feed bin comprises the region that the flange edge of four bounding walls of two liang of mutual disposition encloses, one of them is the first board that the lower plate limit of mutual disposition is the straight flange, another is the second board that the lower plate limit of mutual disposition is convex limit, the camber axle core on convex limit is located convex limit top, the blowing valve includes that the face is the upwards side arm board that extends that the arc limit of the valve plate of arc surface and valve plate is connected, the camber coincidence on valve plate and convex limit, the upper end of side arm board is articulated with the feed bin in camber axle core department, the last face of valve plate closes or opens the discharge gate along the removal of convex limit border when the valve plate swings around articulated axle core. In the above-mentioned scheme, not only the response is swift, has also avoided the valve plate to meet with the phenomenon of jamming, has ensured simultaneously that the phenomenon of no drop, hourglass material takes place when closing.

Description

Material bin

Technical Field

The utility model relates to a continuous accumulative automatic weighing apparatus, instrument automation and powdery material metering and conveying.

Background

The metering mode of the large-flow materials generally adopts a continuous accumulation automatic weighing machine and a discontinuous accumulation automatic weighing machine. The continuous accumulation automatic weighing apparatus refers to a belt conveyor metering scale, namely a belt scale, a spiral scale, a disc type metering rotor scale and a decrement scale (or a weightless scale). The continuous accumulation automatic weighing apparatus is also called a dynamic weighing apparatus, the materials are measured during movement, the materials are accumulated and measured in a calculus mode according to the weight of a unit length and the speed of a unit time, the deviation between the collected data and the weight of the actual material in the unit length is large at the moment of the operation state, the accuracy stability fluctuation of the measurement result of the accumulated calculation is large, and the measurement under the conditions of large flow and high accuracy requirement is difficult to meet. The discontinuous accumulation automatic weighing apparatus refers to a fixed electronic weighing apparatus, materials are measured in a static state, and the non-continuous accumulation automatic weighing apparatus generally comprises a hopper scale, a truck scale, a platform scale and other representative weighing apparatuses, has high measuring precision, can meet the requirement of material trade measuring precision, but cannot meet the requirements of large flow, high material price and capability of realizing continuous work and measurement. The transportation mode of port, wharf and material is generally the transportation of belt conveyor, and its characteristics are large transportation quantity and low operation cost. The commodity with high material trade settlement price is generally in a cargo ship waterline mode, the measurement error value is large, and the value loss of commodity purchasers is large, so the problems of high material price in trade settlement, continuous and stable precision and continuous accumulated measurement under the state of large flow must be solved.

The powdery material conveyed by the conveyor from a port or a wharf is continuously conveyed to the metering device, and the dynamic metering in the continuous conveying process can be realized by mounting the belt weigher on the conveyor. The belt conveyor belt is influenced by the flow of the powdery material and the ambient temperature due to large fluctuation of the transportation flow, the belt tension changes greatly, so that the fluctuation of two key technical parameters of the belt scale under the instantaneous conditions of a weight signal and a speed signal is abnormal, the metering precision of the belt scale is influenced, the chain code and weight verification adopted in a verification method of the belt scale in the daily use process is large in deviation compared with the actual metering precision, and the actual metering precision is more than 0.5% and is unstable. Although the belt weigher is widely used, the belt weigher cannot be accepted by both suppliers and suppliers as the trade settlement of the powdery materials, and for the purpose of realizing the settlement of the powdery materials of the belt conveyor, a metering system with the metering precision of more than 0.2 percent accepted by both suppliers and suppliers must be selected.

The Chinese patent discloses a patent document named as an on-line continuous static metering conveying system and a conveying process of a bulk cargo wharf, and aims to solve the technical problem of low metering precision existing in the process of calculating the unloading quantity through the draught level change of a ship body. The technical scheme adopted by the method comprises a plurality of static metering bins 1 which are arranged in parallel, a loading conveyor 2 which is arranged above the static metering bins 1 and used for loading materials into the static metering bins 1, a first belt conveyor 3 which is used for transferring the materials from a cargo ship to the loading conveyor 2, and a second belt conveyor 5 which is arranged below the static metering bins 1 and used for conveying the materials to a transfer station 4. The system further comprises a buffer bin 6, a charging hole of the buffer bin 6 is correspondingly arranged below a discharging hole of the static metering bin, and a feeding machine 7 for feeding materials to the second belt conveyor 5 is arranged at the discharging hole of the buffer bin 6.

This prior art has following technical problem at least, and one is a plurality of static measurement feed bins 1 that set up side by side and the linking problem between the material loading conveyer 2, owing to have a plurality of static measurement feed bins 1, must require material loading conveyer 2 to carry the material respectively to the hopper import department of corresponding static measurement feed bin 1 promptly. The necessary indexing of the engagement is based on which movement is achieved and is not disclosed in the literature. If the static metering bin 1 is displaceable and the loading conveyor 2 is fixed, the weighing device of the static metering bin 1 and the vehicle-mounted hydraulic opening and closing mechanism are displaced along with the static metering bin, all accessories are displaced together, and the direct result of the belt is that the pipeline arrangement and the guiding are complex; on the contrary, if the static metering bin 1 is fixed and the loading conveyor 2 is displaced, the problem of how to connect the loading conveyor 2 with the incoming material from the first conveying belt 3 will occur; secondly, the buffer bin 6 is correspondingly arranged below the static metering bin 1, the scheme of arranging the bins up and down is very difficult to do, because a plurality of layers of working (supporting) platforms are required to be arranged, the space height is too high, and meanwhile, the materials are conveyed to a high position, so that the equipment investment of the first conveying belt 3 and the occupied space field are increased undoubtedly; thirdly, the prior art does not disclose a specific scheme how to realize the metering process of the static metering bin 1 in the process of continuously conveying materials by the first conveying belt 3; fourthly, no matter whether the static metering bin 1 is used as a static metering purpose or not, even if the static metering bin is used as a general bin, the technical scheme adopted by the vehicle-mounted hydraulic opening and closing mechanism for opening and closing the outlet of the hopper cannot ensure the opening and closing reliability of the discharge port, particularly how to ensure the closing reliability cannot be ensured, and the material is easily accumulated on the track to cause difficult opening and closing operation or even impossible movement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a material feed bin guarantees the reliability of closed condition when possessing the agility of switching.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a material bin is characterized in that a discharge port at the lower end of the bin is formed by an area surrounded by four plate edges of enclosing plates which are oppositely arranged in pairs, one pair of the first plates is a first plate with a straight edge of a lower plate which is oppositely arranged, the other pair of the second plates is a second plate with a circular arc edge of the lower plate which is oppositely arranged, a curvature shaft core of the circular arc edge is positioned above the circular arc edge, a discharge valve comprises a valve plate with a circular arc surface and a side arm plate which extends upwards and is connected with the circular arc edge of the valve plate, the valve plate is superposed with the curvature of the circular arc edge, the upper end of the side arm plate is hinged with the bin at the curvature shaft core, and the discharge port is closed or opened by moving an upper plate surface of the valve plate along the circular arc edge when the valve plate swings around the hinged shaft core.

Among the above-mentioned scheme, the lower extreme discharge gate of feed bin is the arc region, and the valve plate that cooperates with it is corresponding arc to connect the side arm board on the arc edge, thereby the swing action by the side arm board realizes that the displacement process of valve plate closes or open the discharge gate, and not only the response is swift, has also avoided the valve plate to meet with the phenomenon of jamming, has ensured simultaneously that the phenomenon of no drop, hourglass material takes place when closing.

Drawings

FIG. 1 is a functional block diagram of the present invention in particular use;

FIG. 2 is a schematic view of the structure of the present invention in use;

FIG. 3 is a right side view of FIG. 2;

fig. 4 is an enlarged schematic view of the present invention in fig. 3;

fig. 5 is a schematic structural diagram of a discharge port of the storage bin in the present invention;

fig. 6 is a schematic view of the valve opening and closing driving mechanism of the present invention;

fig. 7 is a schematic structural view of the discharge port.

Detailed Description

The first explanation is that the utility model can be used in the material unloading and transporting places of the cargo ships at wharfs and ports, and can also be used in the storage and transportation places of other powdery materials. Powdery materials carried by a cargo ship at a wharf and a port are unloaded from a cargo hold through the conveying belt, the powdery materials firstly reach the bidirectional conveying belt 10 at the upstream of the utility model, the bidirectional conveying belt 10 at the upstream of the utility model alternately conveys the powdery materials to the downstream of the utility model, and the bidirectional conveying belt 10 receives the materials from the cargo hold continuously, so that the problem of continuous conveying and unloading of the materials is firstly realized; and then the metering conveying unit A and the metering conveying unit B respectively carry out independent static metering on the received materials, so that the metering precision is ensured, and then the materials are conveyed to the downstream. The utility model discloses both can add and establish the measurement sensor, also can the utility model discloses a low reaches equipment independently sets up the measurement sensor, constitutes measurement conveying unit A, measurement conveying unit B correspondingly.

For convenience of description, first, a scheme of the metering sensor independently installed on the downstream equipment of the present invention is briefly described as follows, the metering and conveying unit A, B includes a truss 20, a weighing and metering sensor 40 installed between the truss 20 and the frame, and a conveying belt 21 installed on the truss 20. The metered materials are received by a downstream conveying mechanism and are conveyed to the downstream continuously, and a transfer belt 60 is connected below the discharge end of the conveying belt 21. In order to ensure the accuracy of the measurement, the two ends of the truss 20 are provided with weighing and metering sensors 40. More preferably, the two ends of the truss 20 are provided with weighing and metering sensors 40, and one end of the truss is symmetrically provided with two weighing and metering sensors. Firstly, the arrangement of the conveyor belt 21 by the truss 20 basically ensures the uniformity of material distribution so as to reduce the deformation of the middle section of the truss 20 caused by excessive winding, and in order to improve the metering accuracy, the weighing and metering sensors 40 are symmetrically arranged at each end, namely at least two weighing and metering sensors 40 are arranged at each end, so that accurate metering and weighing can be realized by one weighing and metering sensor 40 at each corner part of the bottom surface with the same height of the truss 20. More preferably, one end of the conveying belt 21 is arranged in a high and low inclined manner, and the high end is a discharging end, the weighing and metering sensor 40 is arranged at the bottom of the truss 20 at the same height, and a buffer bin 50 is arranged between the discharging end of the conveying belt 21 and the receiving position of the transfer belt 60 below.

With reference to fig. 1, 2 and 3, the utility model discloses a scheme is: the lower end discharge port 34 of the storage bin 30 is connected with the material receiving part of the conveying belt 21, and the lower end discharge port 34 of the storage bin 30 is provided with a discharge valve 33. The bin 30 is arranged to have the function of blocking, so that the dust raising phenomenon in the falling process of the material is avoided; secondly, temporarily storing redundant materials after the surface of the conveying belt 21 is fully covered with the materials; thirdly, the materials on the bidirectional conveying belt 10 are prevented from directly falling onto the conveying belt 21, because the incoming materials received by the bidirectional conveying belt 10 are continuous, generally, the material receiving part of the bidirectional conveying belt 10 is the middle section part with the length, the two ends are the material discharging ends, when the time for firstly feeding the metering conveying unit A reaches the set time, the bidirectional conveying belt 10 needs to be stopped to stop feeding the metering conveying unit A, at the moment, one section of the belt surface of the bidirectional conveying belt 10 is provided with the materials, and one section of the belt surface is not provided with the materials, when the bidirectional conveying belt 10 runs reversely and turns to feed the metering conveying unit B, the material provided section on the belt surface of the bidirectional conveying belt 10 is covered with one layer of the materials, and then the normal single-layer materials are obtained, so that the phenomenon that the materials on the local belt surface of the conveying belt 21 on the side of the metering conveying unit B are excessive, namely, the materials on the belt surface of the conveying belt 21 cannot be uniformly distributed, in fact, the material unevenness of the conveyor belt 21 of the part A of the metering conveying unit exists. For this reason, it is also desirable to provide a conveyor belt with a wide belt width to accommodate the situation where there is a localized concentrated incoming material that might otherwise overflow over the belt edges. The storage bin 30 is arranged, the phenomenon can be completely avoided, namely, materials received by the conveying belt 21 come from the storage bin 30, the problem that the materials are uniformly distributed on the belt surface of the storage bin 30 is solved, and basic guarantee is provided for the accuracy of metering.

The discharge port 34 of the storage bin 30 is provided with a discharge valve 33, which can ensure that the materials are supplied to the conveying belt 21, and the feeding valve is closed after the feeding is finished, so that the static weighing of the materials on the conveying belt 21 is ensured.

Preferably, a material enclosing hopper 38 is further disposed between the lower end discharge port 34 of the storage bin 30 and the lower end material receiving portion of the conveying belt 21, that is, the material enclosing hopper 38 is further disposed between the discharge valve 33 and the lower end material receiving portion of the conveying belt 21.

In order to ensure the stability of the discharge of the storage bin 30 and the reliability when the storage bin is closed, the utility model provides the following storage bin 30 assembly, namely, the lower end discharge port 34 of the storage bin 30 is formed by an area enclosed by four surrounding plates which are arranged in pairs and oppositely, one pair of the first plates 31 is oppositely arranged, the lower plate edge of each first plate is a straight edge 311, the other pair of the second plates 32 is oppositely arranged, the lower plate edge of each second plate is an arc-shaped edge 3211, a curvature shaft core of the arc-shaped edge 321 is positioned above the arc-shaped edge 321, the discharge valve 33 comprises a valve plate 331 with an arc-shaped plate surface and a side arm plate 332 extending upwards and connected with the arc-shaped edge of the valve plate 331, the valve plate 331 is overlapped with the curvature of the arc-shaped edge 321, the upper end of the side arm plate 332 is hinged with the storage bin 30 at the curvature shaft core, and when the valve plate 331 swings around the hinged shaft core, the upper plate surface of the valve plate 331 moves along the edge of the arc-shaped edge 321 to close or open the discharge port 34.

It should be noted that the position shown by the broken line in fig. 5 is the position where it is open.

The key points of the above scheme are the discharge port shape of the bin 30, the shape of the valve plate, and the matching structure between the two, that is, the circular arc surface plate surface of the valve plate 331 and the mouth edge profile of the circular arc edge 3211 of the second plate 32 are arranged close to each other, so a gap with a proper distance is also kept between the straight edge 311 of the first plate 31 and the circular arc surface plate surface of the valve plate 331, the side arm plate 332 applies a pulling force to the circular arc surface plate edge of the valve plate 331 to overcome the gravity applied by the material, and in the closed state, the material cannot leak out through the gap, so that the reliability of closing the discharge port of the bin 21 is ensured, which provides guarantee for the static state of the material of the conveyor belt 21 on the metering and conveying unit A, B, thereby ensuring the realization of static metering.

When the discharging valve 33 is opened, in order to eliminate the falling flow change of the materials in the bin 30 through the discharging port 34 in a very short time, the uniformity of the distribution of the materials on the conveying belt 21 can be ensured, the following preferable scheme is selected, namely, the partition plate 322 is arranged at the edge of the inner side plate of the second plate 32 which is oppositely arranged at the discharging ports of the bin 30, the partition plate 322 divides the discharging ports into two discharging ports 34, two arc-shaped edges 3211 are symmetrically arranged on two sides taking the partition plate 322 as a boundary, and the discharging valve 33 is correspondingly arranged on two sides taking the partition plate 322 as a boundary.

The scheme has the remarkable advantages that firstly, the stable shape of the discharge hole 34 of the storage bin 30 is ensured, the deformation is reduced, and the matching state with the discharge valve 33 is maintained; secondly, the discharge port 34 of the storage bin 30 is arranged into two areas, namely, two valve plates 331 can be correspondingly arranged, and when the storage bin is opened or closed simultaneously, the response of blanking or stopping blanking is quick, so that the phenomenon of lack of uniformity of material arrangement is reduced; the swing of the two valve plates 331 when opened is resolved into two opposite directions, so the stress of each valve plate 331 is correspondingly shared and the arrangement of the power-driven mechanism is symmetrical and reasonable; when two valve plates 331 are closed, two adjacent plate edges are closely adjacent to the lower surface of partition 322, so that the tightness of closing is ensured, namely, materials cannot leak outwards and upwards through gaps.

In order to ensure smooth blanking, the partition 322 includes an angle plate with an upward angle tip in cross section, and when the two discharge valves 33 are in a closed position, two adjacent edges of the two valve plates 331 are located at the downward opening of the partition 322. By the scheme, the blanking reliability is ensured, and the premise is provided for the reliability of material sealing when the valve plate 322 is closed. The partition 322 is made of angle steel, and the included angle is matched with the inclination angle of the first plate 31 on the corresponding side.

As a drive mechanism for valve plate 332. It includes motor 35, has drive mechanism between motor 35 and the side arm board 332. The power drives the side arm plate 332 connected to the valve plate 332 through a transmission mechanism, the member to be restrained is the side arm plate 332, and the side arm plate 332 moves in an oscillating motion to realize opening and closing of the valve plate 332.

The specific transmission mechanism is that the rotating shaft of the motor 35 is arranged in parallel with the curvature shaft core and is connected with the rotary table 36, one end of the connecting rod 37 is hinged at the lower corner of the outer side of the side arm plate 332, and the other end of the connecting rod 36 is hinged at the position of the rotary table 36 close to the disc edge. The transmission mechanism is simple and reliable.

Because the utility model discloses a rationality of hoist mechanism design also can regard feed bin 30 as the measurement object, owing to adopted the valve plate structure of running from opposite directions the door, the material knot encircles the phenomenon and eliminates basically, even if appear slight knot occasionally and encircle the phenomenon, the vibrator also is occasionally and brief use, can not lead to the fact the influence to weighing transducer's performance and life-span, so set up weighing transducer 40 between feed bin 30 and the frame. The design can realize the effect of metering upstream and downstream simultaneously, can compare the metering errors of upstream and downstream, and can even be used as the judgment basis for judging whether the weighing and metering sensor 40 is invalid or damaged.

Claims (6)

1. A material bin, its characterized in that: the discharge port at the lower end of the storage bin (30) is formed by an area surrounded by the plate edges of four enclosing plates which are arranged in pairs in an opposite way, one pair of the first plates (31) is provided with a straight edge (311) at the lower plate edge which is arranged oppositely, the other pair of the first plates (32) is provided with a circular arc edge (321) at the lower plate edge which is arranged oppositely, the curvature axis core of the circular arc edge (321) is positioned above the circular arc edge (321), the discharge valve (33) comprises a valve plate (331) with a circular arc surface and an upward extending side arm plate (332) connected with the circular arc edge of the valve plate (331), the valve plate (331) is superposed with the curvature of the circular arc edge (321), the upper end of the side arm plate (332) is hinged with the storage bin (30) at the curvature axis core, and the discharge port (34) is closed or opened by the upper plate surface of the valve plate (331) moving along the circular arc edge (321) when the valve plate (331) swings around the hinged axis core.

2. The material bin according to claim 1, characterized in that a partition (322) is arranged at the edge of the inner side plate of the second plate (32) which is arranged oppositely, the partition (322) divides the discharge port into two discharge ports (34), two arc-shaped edges (321) are symmetrically arranged at two sides with the partition (322) as a boundary, and discharge valves (33) are correspondingly arranged at two sides with the partition (322) as a boundary.

3. The material storage bin as claimed in claim 2, wherein the partition (322) comprises an angle plate with an upward angle point section, and two adjacent edges of the two discharge valves (33) are positioned at a downward opening of the partition (322) when the two discharge valves are in a closed position.

4. The material storage bin according to claim 3, wherein the driving mechanism comprises a motor (10), and a transmission mechanism is arranged between the motor (10) and the side arm plate (332).

5. The material storage bin according to claim 4, characterized in that the rotating shaft of the motor (10) is arranged in parallel with the curvature shaft core and is connected with the rotating disc (20), one end of the connecting rod (21) is hinged at the lower corner of the outer side of the side arm plate (332), and the other end of the connecting rod (21) is hinged at the disc edge of the rotating disc (20).

6. A material silo according to claim 1 or 2 or 3 or 4 or 5, characterized in that a weighing and metering sensor (40) is arranged between the silo (30) and the frame.

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