阅读说明：本技术 物料静态计量的输送装置 (Conveying device for static material metering ) 是由 崔平 赵耀 何建平 李春侠 尚俊超 王正斌 汤巧琳 于 2020-12-02 设计创作，主要内容包括：本发明提供一种物料静态计量的输送装置,其特征在于:包括桁架,桁架与机架之间设置的称重计量传感器,桁架上设置有输送带,所述的桁架两端设置有称重计量传感器,称重计量传感器在所述的桁架每端对称设置两个。上述称重计量传感器设置在桁架与机架基础之间,桁架两端设置称重计量传感器并且每端对称设置两个,所以保证了对桁架及附加设备的计量称重的准确性,输送带上布设物料后实施静态称量,可以保证计量的准确性。(The invention provides a conveying device for static material metering, which is characterized by comprising a truss, weighing and metering sensors arranged between the truss and a rack, wherein a conveying belt is arranged on the truss, the weighing and metering sensors are arranged at two ends of the truss, and the weighing and metering sensors are symmetrically arranged at each end of the truss. The weighing and metering sensors are arranged between the truss and the frame foundation, the weighing and metering sensors are arranged at two ends of the truss, and each end is symmetrically arranged with two sensors, so that the accuracy of weighing the truss and the additional equipment is ensured, and the accuracy of metering can be ensured by implementing static weighing after materials are laid on the conveyor belt.)

1. The conveying device for the static metering of the materials is characterized by comprising a truss (20), weighing and metering sensors (40) arranged between the truss (20) and a rack, a conveying belt (21) is arranged on the truss (20), the weighing and metering sensors (40) are arranged at two ends of the truss (20), and the weighing and metering sensors (40) are symmetrically arranged at two ends of the truss (20).

2. The conveying device for static material metering according to claim 1, wherein the conveying belt (21) is arranged in a tilted manner with one end high and the other end low, and the high end is a discharge end.

3. The conveying device for static material metering according to claim 1, characterized in that the weighing and metering sensors (40) on the truss (20) are arranged at equal height positions.

4. The conveying device for static material metering according to claim 3, characterized in that the discharge end of the conveying belt (21) is provided with a downwardly extending buffer bin (50).

5. The conveying device for static material metering according to claim 4, characterized in that a bin (30) is arranged at the upper part of the conveying belt (21), and a discharge port at the lower end of the bin (30) is connected with a receiving part at the lower end of the conveying belt (21).

6. The conveying device for static material metering according to claim 2, 4 or 5, characterized in that the included angle alpha between the conveying belt (21) and the horizontal direction is 2-8 degrees.

7. The conveying device for static material metering according to claim 6, characterized in that the included angle alpha between the conveying belt (21) and the horizontal direction is 3-5 degrees.

Technical Field

The invention relates to a continuous accumulation automatic weighing apparatus, meter automation and metering and conveying of powdery materials.

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; and fourthly, the storage bin is selected as a weighing object, so that the measuring sensor is easily damaged, the storage bin stores materials for a long time, the phenomena of arching and the like easily occur, a depolymerization excitation or a vibration device is additionally arranged on the common storage bin, frequent vibration causes frequent shaking of the storage bin, and the sensor is damaged or the service life of the sensor is shortened.

Disclosure of Invention

The invention aims to provide a conveying device for static metering materials, which ensures static metering of the materials and provides guarantee for a continuous discharging process.

In order to achieve the purpose, the invention adopts the following technical scheme: the conveying device for the static material metering is characterized by comprising a truss, weighing and metering sensors arranged between the truss and a rack, wherein a conveying belt is arranged on the truss, the weighing and metering sensors are arranged at two ends of the truss, and the weighing and metering sensors are symmetrically arranged at each end of the truss.

The weighing and metering sensors are arranged between the truss and the frame foundation, the weighing and metering sensors are arranged at two ends of the truss, and each end is symmetrically arranged with two sensors, so that the accuracy of weighing the truss and the additional equipment is ensured, and the accuracy of metering can be ensured by implementing static weighing after materials are laid on the conveyor belt.

Drawings

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

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

fig. 3 is a right side view of fig. 2.

Detailed Description

Firstly, the cargo ship arriving at a wharf and a port unloads the powder materials carried by the cargo ship from the cargo hold through the conveying belt, firstly arrives at the upstream bidirectional conveying belt 10 of the invention, the bidirectional conveying belt 10 alternately conveys the powder materials to the downstream of the invention, and the bidirectional conveying belt 10 receives the powder materials from the cargo hold continuously, so that the problem of continuous conveying of the powder materials is firstly realized; then, the metering conveying unit A and the metering conveying unit B respectively carry out independent static metering on the received materials; the weighing and conveying units A, B each include a truss 20, weighing and metering sensors 40 are disposed between the truss 20 and the machine frame, a conveying belt 21 is disposed on the truss 20, weighing and metering sensors 40 are disposed at two ends of the truss 20, and two weighing and metering sensors 40 are symmetrically disposed at each end of the truss 20.

The metered material is taken up by the downstream conveying means of the invention and conveyed further downstream, for which purpose a transfer belt 60 is attached below the discharge end of the conveyor belt 21.

The static material metering and conveying device provided by the invention is the main equipment forming the metering and conveying unit A, B.

With reference to the figures, firstly, the arrangement of the conveyor belt 21 by the truss 20 substantially ensures the uniformity of material distribution to reduce the deformation of the middle section of the truss 20 due to excessive winding, and in order to improve the metering accuracy, the weighing and metering sensors 40 are symmetrically arranged at each end, that is, 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 of the four corner parts of the bottom surface of the truss 20 with the same height.

The slope form that conveyer belt 21 one end is high, one end is low is arranged and high-end is the discharge end, and weighing and metering sensor 40 arranges the equal altitude position department in the bottom of truss 20, and downwardly extending's buffering feed bin 50 has been arranged to the discharge end of conveyer belt 21, and buffering feed bin 50 links up with the material receiving position of the transport belt 60 of below. The arrangement has the advantages that on one hand, the material receiving end of the conveying belt 21 is lower in position, so that the material coming from the upper part of the conveying belt is lower, the height of the material coming from the conveying belt is reduced, and the energy consumption for conveying the material and the difficulty for arranging equipment on the upper space and the lower space are reduced; on the other hand, can reserve out suitable height and arrange buffer bin 50 between the discharge end of conveyer belt 21 and the material receiving position of the transport belt 60 of below, arrange buffer bin 50's benefit and lie in can avoiding the material raise dust phenomenon that the process of falling caused, can guarantee again that the material on the conveyer belt 21 of settlement is whole unloads away, guarantee that conveyer belt 21 is in the empty material state so that carry out next material receiving weighing task, buffer bin 50 remains a small part of material and continues to fall and arrive transport belt 60 and continue to accomplish subsequent transport task.

The upper part of the conveyer belt 21 is provided with a bin 30, and a discharge port at the lower end of the bin 30 is connected with a receiving part at the lower end of the conveyer belt 21. Referring to fig. 1, 2 and 3, a discharge port at the lower end of the bin 30 is connected with a material receiving part of the conveyor belt 21, and a discharge valve 33 is arranged at the discharge port at the lower end of the bin 30. 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, 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.

As the preferred scheme, the included angle alpha between the conveying belt 21 and the horizontal direction is 2-8 degrees. More preferably, the included angle alpha between the conveying belt 21 and the horizontal direction is 3-5 degrees. The above-mentioned range of the angle α is selected to satisfy the arrangement requirement of the buffer bin 50 in consideration of the length of the conveyor belt 21.