CN202158891U

CN202158891U - Continuously weighing apparatus

Info

Publication number: CN202158891U
Application number: CN2011202721567U
Authority: CN
Inventors: 郑贻端; 梁俊
Original assignee: GUANGDONG HIGH DREAM INTELLECTUALIZED MACHINERY CO Ltd
Priority date: 2011-07-29
Filing date: 2011-07-29
Publication date: 2012-03-07
Anticipated expiration: 2021-07-29

Abstract

The utility model relates to a continuously weighing apparatus, comprising a conveying unit, a weighing unit, a control unit and an elevating unit, wherein the conveying unit is provide with a conveying surface used for conveying material, the weighing unit is contacted with the conveying surface in the state of weighing and used for weighing the material conveyed by the conveying surface, the elevating unit controls the contact state of the weighing unit and the conveying surface, the weighing unit is contacted with the conveying surface when being in the state of weighing, and the elevating unit elevates the conveying surface to enable the weighing unit not to be contacted with the conveying surface thereby enabling the load of the weighing unit to be zero, when the weighing unit is in the state of zero setting. The arrangement of the elevating unit enables the continuously weighing apparatus to perform accurate calibration and zero setting operation without interrupting the material conveying, and the continuously weighing apparatus is simple and reasonable in structure and low in manufacture cost.

Description

Continuous weighing device

Technical field

The utility model relates to a kind of continuous weighing device.

Background technology

At present, be applied to continuous weighing device on the Ingredient Production Line of industries such as harbour, iron and steel, food processing, chemical industry and medicine manufacturing.

Tradition is the main flow through solid granule in the measurement course of conveying of weighing device continuously; Accumulative total is tried to achieve the general assembly (TW) that is transferred material; Its ultimate principle is; The weight of material value of continuous coverage through unit distance measured the unit distance that moves continuously simultaneously, and in time t, the gravimetric value of unit distance being added up is exactly the general assembly (TW) of the material that belt is carried in the time t.Material metage is realized that by LOAD CELLS the measuring accuracy of LOAD CELLS receives the influence of environmental factor such as temperature, humidity, wind, vibration and electromagnetic interference (EMI) etc. easily.At present, the accuracy of weighing device depends on frequent daily calibration zero setting to a great extent continuously, and accuracy grade is high more to be relied on this more.Existing calibration zero setting method; Most of interruption streams that needs is carried out; Make continuous weighing device quit work, not only can not eliminate the error under the actual working state fully, and the interruption streams is calibrated zero setting; Greatly reduce the utilization factor of continuous weighing device, influence the enterprise production benefit.

Summary of the invention

The purpose of the utility model is to provide a kind of mass transport of can not interrupting just can calibrate zero setting, and continuous weighing device simple and reasonable, low cost of manufacture.

A kind of continuous weighing device comprises delivery section, the portion of weighing, control part, lifting unit.Said delivery section has conveyor surface, and said conveyor surface is used for convey materials.The said portion of weighing contacts with said conveyor surface, is used for the material that said conveyor surface is carried is weighed.Said control part comprises controller and drive motor, is used for control and drives said delivery section and the said portion of weighing.Said lifting unit is controlled by said control part; Said continuous weighing device is in when weighing state; Said control part is controlled said lifting unit, makes the said portion of weighing contact said conveyor surface, when said continuous weighing device is in the zero setting state; Said control part is controlled said lifting unit, makes the said portion of weighing away from said conveyor surface.

Further, said delivery section comprises at least one pair of fixedly carrying roller, said at least one pair of fixedly carrying roller be positioned at the both sides of the said portion of weighing, said fixedly carrying roller and the said portion of weighing are positioned at the same side of said conveyor surface.

Further; Said lifting unit also comprises at least one synchronous carrying roller, reaches at least one lifting drive; The corresponding setting of each said synchronous carrying roller with at least one lifting drive; Said at least one synchronous carrying roller is positioned at the one or both sides of the said portion of weighing, and said lifting drive is connected with said control part.

Further, said lifting drive comprises a screw mandrel, a motor, and said screw mandrel is installed on the output shaft of said motor, and said screw mandrel is connected with said synchronous carrying roller.

Further, said continuous weighing device also comprises frame, and said delivery section also comprises driving wheel, engaged wheel and is connected across the conveying belt on said driving wheel, the engaged wheel.

Further, said continuous weighing device also comprises regulating device, and said regulating device one end is connected on the said engaged wheel, and the other end is arranged on the said frame.

Further, said regulating device is an adjusting screw(rod), and the screw thread that matches with said adjusting screw(rod) is set on said frame or the said engaged wheel.

Further, the said portion of weighing comprise weighing carrier roller, with the LOAD CELLS that said weighing carrier roller is connected, said weighing carrier roller through said lifting unit the adjustment contact or away from said conveyor surface.

Further, said delivery section also comprises feeder hopper, said feeder hopper be arranged at said conveyor surface directly over, at said conveyor surface and the different side of said feeder hopper at least one impact idler is set.

Compared with prior art, the beneficial effect of present technique scheme is following:

Set up lifting unit on the weighing device continuously, need not interrupt streams and can realize zero-setting operation, simple and reasonable, low cost of manufacture.Regulate the contact condition of weigh portion and conveying belt through lifting unit, can realize any moment to the zero-setting operation of LOAD CELLS and can keep the feeding state of conveying belt, and the zero setting frequency is unrestricted; During zero setting; Conveying belt need not to quit work, and reset time is short, and automaticity is high; Easy to control, improve the transfer efficiency of continuous weighing device greatly.

Description of drawings

Fig. 1 is the structural representation of the continuous weighing device of present technique scheme implementation example;

Fig. 2 is the partial schematic diagram of the continuous weighing device of present technique scheme implementation example;

Fig. 3 is the user mode figure of the continuous weighing device of present technique scheme implementation example.

Embodiment

To combine a plurality of accompanying drawings and embodiment that the present technique scheme is done further explanation below.

See also Fig. 1, Fig. 2, continuous weighing device 1 comprises delivery section 2, the portion 3 of weighing, control part 4, lifting unit 5 and frame 6, leg 7.Frame 6 is used to install and fix delivery section 2, weigh portion 3 and lifting unit 5.In the present embodiment, leg 7 be shaped as column, be used to support whole continuous weighing device 1.

Delivery section 2 is used for convey materials, comprises driving wheel 21, engaged wheel 22, conveying belt 23, regulating device 24, feeder hopper 25, impact idler 26 and fixing carrying roller 27.Conveying belt 23 is connected across on driving wheel 21 and the engaged wheel 22, and driving wheel 21 is connected with control part 4, and driving wheel 21 drives engaged wheels 22 with suitable speed rotation under the control of control part 4, thereby the material that drives on conveying belt 23 and the conveying belt 23 rotates.Device for installing and adjusting 24 between engaged wheel 22 and frame 6.One end of regulating device 24 is installed on the engaged wheel 22, and the other end is installed on the frame 6, is used to regulate the distance between engaged wheel 22 and the driving wheel 21, to regulate the tension force of conveying belt 23.Regulating device 24 can be draw runner to be set be slidingly connected, and telescoping mechanism also can be set carry out telescopic adjustment.In the present embodiment, for realizing tension adjustment effectively efficiently, regulating device 24 adopts adjusting screw(rod), and an end of adjusting screw(rod) is arranged on the engaged wheel 22, and the other end is arranged on the frame 6.Wherein end on the adjusting screw(rod) is provided with screw thread, frame 6 or engaged wheel 22 is provided with the setting nut that matches with adjusting screw(rod).Feeder hopper 25 is arranged on the top of conveying belt 23 and near an end of engaged wheel 22, is used for carrying endlessly material to be claimed.Opposite side at the conveying belt 23 relative with feeder hopper 25 is provided with at least one impact idler 26.Impact idler 26 also is installed on the frame 6.When required volume of material of weighing and quality were big, 23 buffer actions of 26 pairs of conveying belt of impact idler were avoided the suffered impulse force of conveying belt 23 excessive, and are produced bigger vibration and tension variation, influence effective measuring accuracy.Fixedly carrying roller 27 is arranged on the frame 6 in couples, two fixedly carrying roller 27 lay respectively at the both sides of the portion of weighing 3, fixedly carrying roller 27 and the portion 3 of weighing are positioned at the same side of conveying belt 23, two fixedly carrying roller 27 constitute effective metering section with the portion 3 of weighing.Fed distance and speed according to institute's weighing weight of material and material in the practical application can be set with the number of imitating metering section by demand, in the present embodiment, only are provided with an effective metering section, and promptly fixedly the number of carrying roller 27 only is provided with two.Certainly delivery section 2 is not limited to the form in the present embodiment, has the conveyor surface of continuable transmission, and a side of conveyor surface can be installed effective metering section and got final product.

See also Fig. 2, the portion 3 of weighing is used for weighing of material on the conveying belt 23, and the portion 3 of weighing comprises weighing carrier roller 31, the LOAD CELLS 32 that is connected with weighing carrier roller 31.The portion 3 of weighing is installed in conveying belt 23 and the different side of material, and weighing carrier roller 31 contacts with conveying belt 23.Weighing carrier roller 31, LOAD CELLS 32 and control part 4 connect in order, and control part 4 is handled the weight of material signal of LOAD CELLS 32 and signal is changed into concrete video data.

See also Fig. 1, Fig. 2 and Fig. 3; Lifting unit 5 is in when weighing state away from conveying belt 23 in the portion of weighing 3; Lifting conveying belt 23 when the portion of weighing 3 is in the zero setting state; The feasible portion 3 of weighing does not contact with conveying belt 23 mutually, and 23 runnings of alternative weighing carrier roller 31 support belt, is zero thereby make the portion's of weighing 3 loads.Lifting unit 5 comprises at least one synchronous carrying roller 51, and the corresponding lifting drive 50 that is provided with.Wherein, each synchronous carrying roller 51 can be provided with one, two or more lifting drives 50.Lifting drive 50 drives synchronous carrying roller 51 and vertically moves up and down, and its structure can be a mechanical transmission structure, also can be the pneumatic drive structure.In the present embodiment, for realizing elevating movement fast and effectively, lifting drive 50 adopts mechanical transmission structures, specifically comprises a screw mandrel 53, a motor 54, each synchronous carrying roller 51, screw mandrel 53, with the corresponding one by one setting of motor 54.The lifting unit 5 and the portion 3 of weighing are positioned at the same side of conveying belt 23, and at least one lifting unit 5 is positioned at the one or both sides of the portion of weighing 3.Screw mandrel 53 is installed on the output shaft of motor 54, and screw mandrel 53 is connected with synchronous carrying roller 51, accordingly, between screw mandrel 53 and synchronous carrying roller 51, nut 52 is installed.Control part 4 is controlled motion under synchronous carrying roller 51 in the vertical directions through the rotating of control motor 54.Motor 54 starts the back and drives nut 52 risings, and nut 52 drives synchronous carrying roller 51 and moves up, and lifting conveying belt 23 makes conveying belt 23 separate with weighing carrier roller 31.This moment, carrying roller 51 replaced weighing carrier roller 31 support belt 23 synchronously; Simultaneously, 4 pairs of LOAD CELLSs of control part 32 carry out zero-setting operation, after zero setting finishes; Motor 54 starts once more and drives synchronous carrying roller 51 and move down, and weighing carrier roller 31 is contacted with conveying belt 23 again and weighs.

Control part 4 also comprises controller (figure does not show); Calculate the instantaneous delivery of convey materials and the conveying general assembly (TW) that material is calculated in accumulation under the normal condition; When synchronous carrying roller 51 substitutes 23 runnings of weighing carrier roller 31 support belt; No longer calculate the instantaneous delivery value, and the instantaneous delivery value of the average flow value of last one-period as this moment; Zero-setting operation to be accomplished, weighing carrier roller 31 contacts again with conveying belt 23 and weighs, and calculates the instantaneous delivery value again.Wherein, the conveying belt 23 operations used time in one week is regarded as one-period.

The present technique scheme is set up lifting unit, need not interrupt streams and can realize zero-setting operation, and is simple and reasonable, low cost of manufacture.Regulate the contact condition of weigh portion and conveying belt through lifting unit, can realize any moment to the zero-setting operation of LOAD CELLS and guarantee conveying belt maintenance feeding state, and the zero setting frequency is unrestricted.During zero setting, conveying belt need not to quit work, and reset time is short, and automaticity is high, and is easy to control, improves the transfer efficiency of continuous weighing device greatly.

Above-listed detailed description is specifying to one of the utility model possible embodiments; This embodiment is not the claim in order to restriction the utility model; Allly do not break away from the equivalence that the utility model does and implement or change, all should be contained in the claim of this case.

Claims

1. a continuous weighing device is characterized in that, comprises;

Delivery section, said delivery section has conveyor surface, and said conveyor surface is used for convey materials;

The portion of weighing, the said portion of weighing contacts with said conveyor surface, is used for the material that said conveyor surface is carried is weighed;

Control part, said control part comprises controller and drive motor, is used for control and drives said delivery section and the said portion of weighing;

And lifting unit; Said lifting unit is controlled by said control part, and said continuous weighing device is in when weighing state, and said control part is controlled said lifting unit; Make the said portion of weighing contact said conveyor surface; When said continuous weighing device was in the zero setting state, said control part was controlled said lifting unit, made the said portion of weighing away from said conveyor surface.

2. continuous weighing device as claimed in claim 1; It is characterized in that; Said delivery section comprises at least one pair of fixedly carrying roller, said at least one pair of fixedly carrying roller be positioned at the both sides of the said portion of weighing, said fixedly carrying roller and the said portion of weighing are positioned at the same side of said conveyor surface.

3. continuous weighing device as claimed in claim 1; It is characterized in that; Said lifting unit also comprises at least one synchronous carrying roller, reaches at least one lifting drive; The corresponding setting of each said synchronous carrying roller with at least one lifting drive, said at least one synchronous carrying roller is positioned at the one or both sides of the said portion of weighing, and said lifting drive is connected with said control part.

4. continuous weighing device as claimed in claim 3 is characterized in that, said lifting drive comprises a screw mandrel, a motor, and said screw mandrel is installed on the output shaft of said motor, and said screw mandrel is connected with said synchronous carrying roller.

5. continuous weighing device as claimed in claim 1 is characterized in that, said continuous weighing device also comprises frame, and said delivery section also comprises driving wheel, engaged wheel and is connected across the conveying belt on said driving wheel, the engaged wheel.

6. continuous weighing device as claimed in claim 5 is characterized in that, said continuous weighing device also comprises regulating device, and said regulating device one end is connected on the said engaged wheel, and the other end is arranged on the said frame.

7. continuous weighing device as claimed in claim 6 is characterized in that, said regulating device is an adjusting screw(rod), and the screw thread that matches with said adjusting screw(rod) is set on said frame or the said engaged wheel.

8. continuous weighing device as claimed in claim 1 is characterized in that, the said portion of weighing comprise weighing carrier roller, with the LOAD CELLS that said weighing carrier roller is connected, said weighing carrier roller through said lifting unit the adjustment contact or away from said conveyor surface.

9. continuous weighing device as claimed in claim 1 is characterized in that said delivery section also comprises feeder hopper, said feeder hopper be arranged at said conveyor surface directly over, at said conveyor surface and the different side of said feeder hopper at least one impact idler is set.