阅读说明：本技术 一种线性预测式粉料计量秤称重装置及方法 (Linear prediction type powder material metering scale weighing device and method ) 是由 张祥宇 张�杰 于 2021-08-27 设计创作，主要内容包括：本发明公开了一种线性预测式粉料计量秤称重装置及方法,涉及装车物料下料称重技术领域。在本发明中：每个直道测压模块上都设置若干位于同一直线上的压力传感探头。分料塔以及分料塔外围的称重环的下侧设置有用于安装支撑分料塔和称重环的支撑底架,支撑底架下方配置有用于线性驱动调节支撑底架升降的主伺服驱动装置。称重环的外围设置有位于支撑底架下方的导料框,导料框上开设有回料通道,回料通道位置处配置有封堵环。本发明通过分料塔底部的直道测压模块对物料的垂向衰减特性进行监测,便于实现对未完成垂向速度衰减的下料物料进行分选回流,对完成垂向速度衰减的下料物料进行常态导流,实现更高精度的下料称重。(The invention discloses a linear prediction type powder material metering scale weighing device and method, and relates to the technical field of loading material blanking weighing. In the present invention: and each straight-way pressure measuring module is provided with a plurality of pressure sensing probes positioned on the same straight line. The lower sides of the weighing rings on the periphery of the material distributing tower and the material distributing tower are provided with supporting bottom frames for installing and supporting the material distributing tower and the weighing rings, and a main servo driving device for linearly driving and adjusting the lifting of the supporting bottom frames is arranged below the supporting bottom frames. The periphery of the weighing ring is provided with a material guiding frame positioned below the supporting bottom frame, a material returning channel is arranged on the material guiding frame, and a blocking ring is arranged at the position of the material returning channel. According to the invention, the vertical attenuation characteristic of the material is monitored by the straight pressure measuring module at the bottom of the material distributing tower, so that the sorting and backflow of the blanking material which does not finish the vertical velocity attenuation can be conveniently realized, the normal diversion of the blanking material which finishes the vertical velocity attenuation can be realized, and the blanking weighing with higher precision can be realized.)

1. The utility model provides a linear prediction formula powder weigher weighing device, includes feed bin introducing port (1), feed bin introducing port (1) below sets up unloading pipeline (2), its characterized in that:

the blanking pipeline (2) is provided with a speed sensing device (3) for sensing and monitoring the blanking speed of the material;

a material distribution tower (4) is arranged right below the blanking pipeline (2), the material distribution tower (4) comprises a ramp (401) and a straight channel (402), the straight channel (402) is positioned at the downstream of the ramp (401), and an annular weighing ring (7) is arranged on the periphery of the bottom of the material distribution tower (4) in a matched manner;

a plurality of groups of straight-way pressure measuring modules are arranged on a straight way 402 of the material distribution tower (4), and each straight-way pressure measuring module is provided with a plurality of pressure sensing probes (8) positioned on the same straight line;

a supporting underframe (5) for mounting and supporting the distributing tower (4) and the weighing ring (7) is arranged at the lower sides of the distributing tower (4) and the weighing ring (7) at the periphery of the distributing tower (4), and a main servo driving device (6) for linearly driving and adjusting the lifting of the supporting underframe (5) is arranged below the supporting underframe (5);

the material guiding frame (9) located below the supporting bottom frame (5) is arranged on the periphery of the weighing ring (7), a material returning channel (10) is formed in the material guiding frame (9), and a blocking ring (12) is arranged at the position of the material returning channel (10).

2. The linear predictive powder weigher weighing apparatus of claim 1, further comprising:

the cross section of the ramp (401) of the material distribution tower (4) is in an inwards concave arc shape, and the straight channel (402) is a ring-shaped plane plate.

3. The linear predictive powder weigher weighing apparatus of claim 1, further comprising:

the straight lines where the pressure sensing probes (8) on the straight-way pressure measuring module are located pass through the circle center of the annular structure of the straight way.

4. The linear predictive powder weigher weighing apparatus of claim 1, further comprising:

one side of the plugging ring (12) is provided with an auxiliary side servo driving device (11) used for stretching the plugging ring (12), and the auxiliary side servo driving device (11) is installed on the outer side wall of the pipeline of the feed back channel (10).

5. The linear predictive powder weigher weighing apparatus of claim 1, further comprising:

the outer edge of the weighing ring (7) protrudes out of the area right above the outer edge of the supporting chassis (5).

6. A linear prediction type powder material metering scale weighing method is characterized in that the weighing device of the linear prediction type powder material metering scale of any one of claims 1-5 is adopted, and the weighing device comprises the following contents:

(1) the device comprises a main control system, wherein the main control system acquires the blanking speed information of the material in a blanking pipeline (2) monitored by a speed sensing device (3) in real time, acquires the pressure information monitored by a straight-way pressure measuring module in real time, and acquires the weight information monitored by a weighing ring (7) in real time;

(2) according to the blanking speed information of the material in the blanking pipeline (2) monitored by the speed sensing device (3), the main control system sends a control signal to the main servo driving device (6), and the main servo driving device (6) carries out initial section position adjustment on the material tower (4);

(3) the material is acted on through ramp (401) of branch material tower (4), and vertical speed continuously reduces, and a plurality of straight way pressure measurement module on straight way (402) carries out the constant voltage survey:

firstly, when pressure information detected by a plurality of continuous pressure sensing probes (8) in the most downstream area along the movement of the material in a plurality of pressure sensing probes (8) on any one straight-way pressure measuring module is continuously attenuated within a certain time, the attenuation degree of the vertical speed is insufficient;

secondly, when pressure information detected by two pressure sensing probes (8) at the tail end along the material moving direction in a plurality of pressure sensing probes (8) on each straight pressure measuring module in a certain time is the same, the vertical speed attenuation is finished;

(4) when the vertical speed attenuation degree is insufficient, the main control system drives the main servo driving device (6) to perform linear ascending action on the material distribution tower (4) until the vertical speed attenuation is completed;

(5) when the vertical speed attenuation degree is insufficient, the main control system drives the auxiliary side servo driving device (11) to pull back the plugging ring (12), the feed back channel (10) is opened, and materials which do not meet the accurate measurement degree flow back from the feed back channel (10);

(6) when the vertical speed attenuation is completed, the blocking ring (12) blocks the material returning channel (10), and the materials are normally led out downwards from the material guiding frame (9).

Technical Field

The invention belongs to the technical field of loading material blanking weighing, and particularly relates to a linear prediction type powder material metering scale weighing device and method.

Background

In the current material transportation industry, a basic link process of loading materials is carried out. In the existing loading process of containerized materials, the materials can be loaded by equipment such as a large-scale lifting appliance and a mechanical arm.

However, some granular materials are loaded by first weighing the flowing granules. If the powder is fed firstly and then weighed, the phenomenon of insufficient feeding amount or excessive feeding amount is easy to occur.

In the existing process of dynamically weighing the material during blanking, the weight weighed by the weighing device is inaccurate due to the gravity influence of the blanking of material particles due to vertical acceleration. This requires the vertical velocity of the particles of the feed material to be attenuated until the weight effect of the vertical velocity symmetry is minimal.

Prior patent document one, publication No.: CN110834746A, patent name: the three-bucket quantitative weighing filling machine system and the quantitative weighing method thereof mainly comprise the technical abstract: the automatic feeding device comprises a rack, a blanking hopper, a first, a second and a third weighing hopper and a controller, wherein a filling opening is formed in the bottom of the blanking hopper, the first, the second and the third weighing hoppers capable of independently discharging materials to the blanking hopper are arranged above the blanking hopper, and the controller is electrically connected with the first, the second and the third weighing sensors, the first, the second and the third discharging valves, and the first, the second and the third discharging valves respectively. The invention has reasonable and compact structure and convenient use, controls the first weighing hopper, the second weighing hopper and the third weighing hopper to carry out alternate and cyclic weighing operation through the controller, and further increases the quantitative weighing time compared with the traditional double-hopper type weighing filling machine system, namely improves the weighing precision, the product percent of pass and the production cost.

The first patent document (CN110834746A) does not provide a concrete solution to the problem of material blanking speed attenuation in the existing loading weighing device.

Disclosure of Invention

The invention aims to provide a weighing device of a linear prediction type powder material metering scale, which monitors the vertical attenuation characteristic of materials through a straight-channel pressure measuring module at the bottom of a material distributing tower, is convenient to realize the separation and backflow of discharged materials which do not finish vertical speed attenuation, performs normal diversion on the discharged materials which finish vertical speed attenuation, and realizes higher-precision discharging and weighing.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a linear prediction type powder weigher weighing device. A material distributing tower is arranged right below the blanking pipeline, the material distributing tower comprises a ramp and a straight channel, the straight channel is positioned at the downstream of the ramp, and an annular weighing ring is arranged at the periphery of the bottom of the material distributing tower in a matched mode. A plurality of groups of straight-way pressure measuring modules are arranged on straight ways of the material distribution tower, and a plurality of pressure sensing probes positioned on the same straight line are arranged on each straight-way pressure measuring module. The lower sides of the weighing rings on the periphery of the material distributing tower and the material distributing tower are provided with supporting bottom frames for installing and supporting the material distributing tower and the weighing rings, and a main servo driving device for linearly driving and adjusting the lifting of the supporting bottom frames is arranged below the supporting bottom frames. The periphery of the weighing ring is provided with a material guiding frame positioned below the supporting bottom frame, a material returning channel is arranged on the material guiding frame, and a blocking ring is arranged at the position of the material returning channel.

As a preferred technical scheme of the weighing device of the metering scale, the weighing device comprises the following components: the cross section of the ramp of the material distribution tower is in an inwards concave arc shape, and the straight path is a ring-shaped plane plate.

As a preferred technical scheme of the weighing device of the metering scale, the weighing device comprises the following components: the straight lines where the pressure sensing probes on the straight-way pressure measuring module are located pass through the circle center of the annular structure of the straight way.

As a preferred technical scheme of the weighing device of the metering scale, the weighing device comprises the following components: one side of the plugging ring is provided with a secondary side servo driving device for the telescopic plugging ring, and the secondary side servo driving device is installed on the outer side wall of the pipeline of the feed back channel.

As a preferred technical scheme of the weighing device of the metering scale, the weighing device comprises the following components: the outer edge of the weighing ring protrudes out of the area right above the outer edge of the supporting underframe.

The invention relates to a weighing method of a linear prediction type powder material metering scale, which comprises the following steps:

(1) the device comprises a main control system, wherein the main control system acquires the blanking speed information of materials in a blanking pipeline monitored by a speed sensing device in real time, acquires the pressure information monitored by a straight-way pressure measuring module in real time, and acquires the weight information monitored by a weighing ring in real time. (2) According to the blanking speed information of the material in the blanking pipeline monitored by the speed sensing device, the main control system sends a control signal to the main servo driving device, and the main servo driving device carries out primary section position adjustment on the material distribution tower. (3) The material is through the ramp effect of dividing the material tower, and vertical speed continuously reduces, and a plurality of straight way pressure measurement module on the straight way carries out the constant voltage survey: firstly, when pressure information detected by a plurality of continuous pressure sensing probes in a downstream area along the movement of a material in a plurality of pressure sensing probes on any one straight-way pressure measuring module is continuously attenuated within a certain time, the attenuation degree of the vertical speed is insufficient; and secondly, when pressure information detected by two pressure sensing probes at the tail end of each straight pressure measuring module in a certain time is the same, the vertical speed attenuation is finished. (4) When the vertical speed attenuation degree is insufficient, the main control system drives the main servo driving device to perform linear ascending action on the material distribution tower until the vertical speed attenuation is completed. (5) When vertical speed attenuation is not enough, the main control system drives the auxiliary side servo driving device to pull back the plugging ring, so that the feed back channel is opened, and the material which does not meet the accurate measurement degree flows back from the feed back channel. (6) When the vertical speed attenuation is completed, the blocking ring blocks the feed back channel, and the materials are normally led out downwards from the material guide frame.

The invention has the following beneficial effects:

in the invention, the blanking in the blanking pipeline is subjected to speed sensing monitoring, and the primary distribution tower is matched through the main servo driving device, so that the vertical speed attenuation matching of the distribution tower on the blanking is primarily completed; and vertical decay characteristic of the material is monitored through a straight-line pressure measuring module at the bottom of the material distributing tower, so that separation and backflow of the discharged material which does not finish vertical velocity decay are conveniently realized, normal diversion is carried out on the discharged material which finishes vertical velocity decay, and discharging weighing with higher precision is realized.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of the overall structure of a weighing device of a linear prediction type powder material metering scale in the invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a schematic diagram of a system for weighing by a weighing scale according to the present invention;

FIG. 4 is a logic diagram of a system for weighing a scale (with insufficient vertical velocity decay) according to the present invention;

FIG. 5 is a logic diagram of the system for weighing a scale (vertical velocity decay is complete) according to the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1-a bin leading-in port; 2-a blanking pipeline; 3-a speed sensing device; 4-a material distribution tower; 401-ramp; 402-straight track; 5-supporting the chassis; 6-main servo drive; 7-a weighing ring; 8-a pressure sensing probe; 9-a material guiding frame; 10-a feed back channel; 11-secondary side servo drive; 12-plugging ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

The invention relates to a linear prediction type powder material metering scale weighing device.

A speed sensing device 3 is configured on the blanking pipeline 2, the speed sensing device 3 carries out sensing monitoring on the blanking speed of the materials in the blanking pipeline 2, and information detected by sensing is transmitted to the main control system.

Be provided with the branch material tower 4 under unloading pipeline 2, divide material tower 4 to be bamboo hat form, divide material tower 4 to include ramp 401 and straight way 402, and straight way 402 is located branch material tower 4 bottom, and the peripheral cooperation of straight way 402 is provided with annular ring 7 of weighing, and the material granule is weighed through ring 7 of weighing again behind straight way 402.

A plurality of straight pressure measuring modules are embedded in the straight channel 402 of the material distribution tower 4, each straight pressure measuring module is provided with a plurality of pressure sensing probes 8, the pressure sensing probes 8 are arranged on the same straight line, and the straight line where the pressure sensing probes 8 on the straight pressure measuring modules are located passes through the circle center of the straight channel annular structure.

Example two

Based on the first embodiment, in the invention:

the lower sides of the distributing tower 4 and the weighing ring 7 are both arranged on the supporting underframe 5, a main servo driving device 6 is arranged below the supporting underframe 5, and the main servo driving device 6 can linearly drive the supporting underframe 5 to lift.

The material guiding frame 9 is positioned below the supporting bottom frame 5, and the material guiding frame 9 is also positioned in the peripheral area of the weighing ring 7 from the top view. In addition, the overall span [ width ] of the support chassis 5 is smaller than the overall span [ width ] dimension of the weighing ring 7. The material guiding frame 9 is provided with a material returning channel 10, the position of the material returning channel 10 is provided with a blocking ring 12, when the material returning channel 10 is opened, material particles return to the storage bin before being unweighted along the material returning channel 10 again to prepare to enter the discharging pipeline again for weighing for a new time.

EXAMPLE III

Based on the second embodiment, in the invention:

the cross section of the ramp 401 of the material distribution tower 4 is an inward concave arc, material particles fall onto the ramp 401 from the blanking pipeline 2, the vertical speed of the material particles is gradually reduced by resistance along with the movement on the ramp 401, after the material particles reach the planar straight channel 402, only the transverse speed is basically achieved, and the vertical speed attenuation is basically completed.

Example four

Based on the first embodiment, in the invention:

a secondary servo driving device 11 for extending and retracting the plugging ring 12 is arranged on one side of the plugging ring 12, and the secondary servo driving device 11 is installed on the outer side wall of the pipeline of the feed back channel 10.

EXAMPLE five

Based on the above embodiments, in the present invention:

the main control system sends a control signal to the main servo driving device 6 according to the blanking speed information of the material in the blanking pipeline 2 monitored by the speed sensing device 3, and the main servo driving device 6 carries out primary section position adjustment on the material distribution tower 4.

The material is through the effect of the ramp 401 of dividing material tower 4, and vertical speed continuously reduces, and a plurality of straight way pressure measurement module on the straight way 402 carries out the constant voltage survey: firstly, when the pressure sensing probes 8 on any one straight-way pressure measuring module and the continuous pressure sensing probes 8 in the downstream area along the movement of the material, the pressure information detected by the first pressure sensing probe 8 is P₁And the pressure information detected by the second pressure sensing probe 8 after 0.2 second is P₂And the pressure information detected by the third pressure sensing probe 8 after 0.4 second is P₃..., if it is P₁>P₂>P₃The degree of vertical velocity attenuation is insufficient. Secondly, when the pressure sensing probes 8 on each straight pressure measuring module are arranged at the two pressure sensing probes 8 at the tail end along the material moving direction, the pressure information detected by the previous pressure sensing probe 8 is P_qAnd the pressure information detected by the second pressure sensing probe 8 after 0.2 second is P_hThen, the vertical speed attenuation of the material particles falling from the ramp 401 of the material distribution tower 4 is completed, and the information accuracy of the material particles falling on the weighing ring 7 for weighing is high.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.