Stroke type automatic online material sampling device

Abstract

The utility model discloses a stroke type material automatic on-line sampling device which comprises static equipment, conveying equipment, driving equipment and control equipment, and the stroke type material automatic on-line sampling operation is realized by pushing an auger, sampling, withdrawing the auger, reversely blowing and repeating the operations. The online sampling device is wide in application range, can be used for online sampling work of powdery, granular, blocky and wet materials in production industries such as building materials, chemical engineering, electric power, metallurgy, mining industry and food, accurately collects finished product material samples of each batch by setting sampling intervals and controlling sampling time, guarantees sample timeliness and detection accuracy, and improves sampling efficiency. And a reliable basis is provided for material quality improvement. Meanwhile, through synchronous online sampling, packaging and stacking, on one hand, the problems of overlarge sample difference, pollution and the like caused by human factors are relieved, and on the other hand, manpower and material resource losses caused by secondary packaging and stacking are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of production packaging material sampling equipment, in particular to a travel type material automatic online sampling device. Background Art

[0002] In order to ensure the stability of production line process parameters and product indicators, the existing production technology adopts process control. After multiple production processes, the materials are transported to the packaging section and then packaged into finished products through automatic unloading, packaging, and palletizing technology. After the finished products are palletized, they are placed in the inspection area. The quality inspectors take samples in batches according to the packaging bag codes. The sampling process will damage the outer packaging and finished product pallets. After the sampling is completed, secondary packaging and palletizing are required, which increases labor costs and reduces quality inspection efficiency. In addition, manual sampling is easily affected by the external environment, resulting in problems such as untimely sample collection and delivery, large differences, and contamination.

[0003] In view of the above problems, the utility model provides a travel-type automatic online material sampling device, which synchronizes material sampling with packaging and palletizing, thereby minimizing the risk of unrepresentative sampling inspection due to human factors, ensuring the fairness of sample inspection, and reducing the manpower and material losses caused by secondary packaging and palletizing. Summary of the invention

[0004] The utility model aims to provide a high-efficiency, low-cost, low-variability stroke-type material automatic online sampling device, which, on the one hand, alleviates the problems of excessive sample variability and contamination caused by human factors, and on the other hand, reduces the manpower and material losses caused by secondary packaging and palletizing.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A travel type material automatic online sampling device comprises: a stationary device, a conveying device, a driving device and a control device.

[0007] Furthermore, the static equipment includes: a closed sampling cylinder, a discharge hopper, a discharge pipe, a gas nozzle, a sleeve, and a coupling.

[0008] Furthermore, the conveying equipment includes: a feeding auger.

[0009] Furthermore, the driving device includes: an explosion-proof electric motor and an adjustable stroke cylinder.

[0010] Furthermore, the control equipment includes: a PLC controller, a frequency converter, a pneumatic control valve, and a position sensor.

[0011] Furthermore, the closed sampling barrel is welded into a combination by two sections of single pipes with different diameters, the feed auger is installed inside the closed sampling barrel and maintains coaxiality with the closed sampling barrel; the driving end of the closed sampling barrel is connected to the explosion-proof motor through the coupling, the top of the small diameter section is provided with a feed inlet, the port of the large diameter section is provided with a sealing cover, and the bottom is provided with a discharge port, the discharge hopper and the discharge pipe are welded in sequence, the top of the large diameter section is provided with an air inlet, which is radially perpendicular to the discharge hopper; the gas nozzle is installed at the air inlet of the closed sampling barrel, and the pneumatic control valve is provided at the air source end; the position sensor is installed at the top of the large diameter section of the closed sampling barrel; the sleeve is installed between the closed sampling barrel and the coupling, and is welded to the adjustable stroke cylinder to realize the stroke control of the device; the frequency converter is vertically installed at the casing of the explosion-proof motor.

[0012] Preferably, the difference between the inner diameter of the small diameter section of the closed sampling tube and the diameter of the feed auger blade is 2 to 6 mm, preferably 4 mm.

[0013] Preferably, the outer diameter of the small diameter section of the closed sampling tube is smaller than the inner diameter of the large diameter section of the tube, and a filler welding method is adopted.

[0014] Preferably, the feed auger shaft end is connected to the drive motor via the sealing cover of the port of the large diameter section of the closed sampling tube using the coupling, and a top screw structure is provided inside the coupling.

[0015] Preferably, the closed sampling tube and the feed auger are both made of 0Cr19Ni9N austenitic stainless steel.

[0016] It should be clear that the above-mentioned residues refer to the production raw materials, by-products and moisture that have not been completely removed from the materials.

[0017] Preferably, the cross section of the lower hopper is funnel-shaped or trapezoidal, being wider at the top and narrower at the bottom.

[0018] Furthermore, the adjustable stroke cylinder is electrically connected to a PLC controller.

[0019] A travel-type material automatic online sampling device comprises the following steps:

[0020] Step 1: Push the auger forward;

[0021] Step 2: Sampling;

[0022] Step 3: Withdraw the auger;

[0023] Step 4: Backflush;

[0024] Step 5: Repeat the above operation to realize automatic online sampling of travel-type materials.

[0025] Furthermore, in step 1, the auger is advanced, including: the PLC controller starts the explosion-proof motor, adjusts the inverter output frequency until the explosion-proof motor reaches a set speed, drives the feed auger to rotate clockwise, and at the same time, the PLC controller adjusts the adjustable stroke cylinder to advance the feed auger toward the feed end to the set position of the position sensor.

[0026] Furthermore, in step 2, sampling includes: the material falls into the feeding port of the closed sampling cylinder, is transported to the discharge port along the axial direction of the closed sampling cylinder under the clockwise rotation of the feeding auger, and flows out from the discharge pipe under the action of gravity.

[0027] Furthermore, in step 3, the auger is withdrawn, including: the PLC controller adjusts the adjustable stroke cylinder to push the auger toward the driving end to the position set by the position sensor, and after all the materials inside the closed sampling barrel flow out from the discharge pipe, the PLC controller sequentially turns off the frequency converter and the explosion-proof motor.

[0028] Furthermore, in step 4, backblowing includes: the PLC controller opens the pneumatic control valve to blow compressed air toward the feed auger through the gas nozzle.

[0029] Preferably, the PLC controller model is SIMATIC S7-200, which has high conversion accuracy and conversion rate, fast computing speed, multiple input / output points, fast response and high reliability.

[0030] Preferably, the PLC controller adjusts the inverter output frequency to a speed value of 20 to 150 r / min for the explosion-proof motor, preferably 50 to 150 r / min for powdery materials, 20 to 60 r / min for granular materials, and 20 to 40 r / min for block materials.

[0031] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0032] It has a wide range of applications and can be used for online sampling of powdery, granular, blocky and wet materials in production industries such as building materials, chemical industry, electric power, metallurgy, mining and food.

[0033] By setting the sampling interval and controlling the sampling time, samples of each batch of finished materials can be accurately collected to ensure the timeliness of samples and the accuracy of detection, providing a reliable basis for improving material quality.

[0034] By synchronizing online sampling, packaging and palletizing, the damage to finished product packaging caused by sampling work can be eliminated, and the manpower and material losses caused by secondary palletizing can be reduced.

[0035] The device automatically takes samples online throughout the entire process to ensure that the samples are not contaminated and are representative. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is the assembly drawing of the static equipment, conveying equipment and driving equipment of the utility model.

[0037] Figure 2 It is a schematic diagram of the process structure of an embodiment of the utility model.

[0038] Figure 3 This is a schematic diagram of the main circuit connection of an embodiment of the utility model.

[0039] Figure 4 This is a schematic diagram of the control structure circuit connection of an embodiment of the utility model.

[0040] Among them, 1 is a closed sampling tube, 2 is a discharge hopper, 3 is a discharge pipe, 4 is a gas nozzle, 5 is a sleeve, 6 is a coupling, 7 is a feed auger, 8 is an explosion-proof motor, 9 is an adjustable stroke cylinder, 10 is a PLC controller, 11 is a frequency converter, 12 is a pneumatic control valve, and 13 is a position sensor.

[0041] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] The following is a detailed description of the technical solutions in the examples of the utility model in conjunction with the drawings in the examples of the utility model. The reference numerals refer to the components and technologies in the utility model so that the advantages and features of the utility model are easier to understand. The following description is a concretization of the claims of the utility model, and other specific implementations related to the claims that are not described belong to the scope of the claims.

[0043] The contents not described in detail in the description of the utility model belong to the prior art known to the professional and technical personnel in this field.

[0044] The standard parts used in the present invention are all purchased from outside, and the non-standard parts are obtained by customization according to the instructions and the drawings. The specific connection methods between the various parts all adopt conventional means such as bolt connection, welding, key connection, etc. in the prior art; the machinery, parts and equipment all adopt conventional models in the prior art; the circuit connection adopts conventional connection means in the prior art, and the specific embodiments of the above methods are not described in detail.

[0045] See attached Figures 1 to 4 , a travel type material automatic online sampling device, including: static equipment, conveying equipment, driving equipment and control equipment.

[0046] Specifically, the static equipment includes: a closed sampling tube 1, a discharge hopper 2, a discharge pipe 3, a gas nozzle 4, a sleeve 5, and a coupling 6; the conveying equipment includes: a feed auger 7; the driving equipment includes: an explosion-proof motor 8, an adjustable stroke cylinder 9; the control equipment includes: a PLC controller 10, a frequency converter 11, a pneumatic control valve 12, and a position sensor 13.

[0047] Specifically, the closed sampling tube 1 is welded into a combination by two sections of single pipes with different diameters. The feed auger 7 is installed inside the closed sampling tube 1 and maintains coaxiality with the closed sampling tube 1; the driving end of the closed sampling tube 1 is connected to the explosion-proof motor 8 through the coupling 6, the top of the small diameter section is provided with a feed inlet, the port of the large diameter section is provided with a sealing cover, and the bottom is provided with a discharge port. The discharge hopper 2 and the discharge pipe 3 are welded in sequence, and the top of the large diameter section is provided with an air inlet, which is radially perpendicular to the discharge hopper 2; the gas nozzle 4 is installed at the air inlet of the closed sampling tube 1, and a pneumatic control valve 12 is provided at the air source end; the position sensor 13 is installed at the top of the large diameter section of the closed sampling tube 1; the sleeve 5 is installed between the closed sampling tube 1 and the coupling 6, and is welded to the adjustable stroke cylinder 9 to realize the stroke control of the device; the frequency converter 11 is vertically installed on the casing of the explosion-proof motor 8.

[0048] This embodiment provides a travel-type material automatic online sampling device, comprising the following steps:

[0049] Step 1: Push the auger forward;

[0050] Step 2: Sampling;

[0051] Step 3: Withdraw the auger;

[0052] Step 4: Backflush;

[0053] Step 5: Repeat the above operation to realize automatic online sampling of travel-type materials.

[0054] Specifically, in step 1, the auger is pushed forward, including: the PLC controller 10 starts the explosion-proof motor 8, adjusts the output frequency of the frequency converter 11 to the motor set speed of 60r / min, drives the feed auger 7 to rotate clockwise, and at the same time, the PLC controller 10 adjusts the adjustable stroke cylinder 9 to push the feed auger 7 toward the feed end to the position L set by the position sensor 13.

[0055] Specifically, in step 2, sampling includes: the material falls into the feeding port of the closed sampling tube 1, is transported to the discharge port along the axial direction of the closed sampling tube 1 under the clockwise rotation of the feeding auger 7, and flows out from the discharge pipe 3 under the action of gravity.

[0056] Specifically, in step 3, the auger is withdrawn, including: the PLC controller 10 adjusts the adjustable stroke cylinder 9, pushes the auger toward the driving end to the position R set by the position sensor 13, and after all the materials inside the closed sampling tube 1 flow out from the discharge pipe 3, the PLC controller 10 turns off the inverter 11 and the explosion-proof motor 8 in sequence.

[0057] Specifically, in step 4 , backblowing includes: the PLC controller 10 opens the pneumatic control valve 12 , and blows compressed air toward the feed auger 7 through the gas nozzle 4 .

[0058] In this embodiment, the difference between the inner diameter of the small diameter section of the closed sampling tube 1 and the blade diameter of the feed auger 7 is 4 mm, which reduces the wear between parts during material transportation and improves transportation efficiency.

[0059] In this embodiment, the outer diameter of the small diameter section of the closed sampling tube 1 is smaller than the inner diameter of the large diameter section of the pipe, and a filler welding method is adopted to reduce the conveying dead angle and improve the conveying efficiency.

[0060] In the present embodiment, the shaft end of the feed auger 7 is connected to the drive motor via the sealing cover of the large diameter section port of the closed sampling tube 1 using the coupling 6. A top screw structure is provided inside the coupling 6 to reduce the shaft gap between the coupling 6 and the feed auger 7, assist in the transmission torque, and ensure the coaxiality of the feed auger 7 and the closed sampling tube 1 to the greatest extent.

[0061] In this embodiment, the closed sampling tube 1 and the feed auger 7 are both made of 0Cr19Ni9N austenitic stainless steel, which have good corrosion resistance, wear resistance and high strength, and minimize the wear of the device caused by material friction and the degree of corrosion of the device by material residues.

[0062] In this embodiment, the cross-section of the lower hopper 2 is a funnel shape that is wide at the top and narrow at the bottom, which reduces material accumulation caused by unstable material flow and channel flow, eliminates the stagnant area inside the closed sampling tube 1, has a high material discharge rate, low maintenance cost, and strong adaptability.

[0063] In this embodiment, the interaction between the frequency converter 11 and the position sensor 13 is adopted, and an independent SIMATIC S7-200 PLC control system is installed to realize the fully automatic control of material sampling.

[0064] In this embodiment, after the feeding auger 7 completes sampling, it is withdrawn under the action of the adjustable stroke cylinder 9. During the withdrawal process, the residual material in the closed sampling tube 1 is brought out together and flows out along the discharge pipe 3 through the discharge hopper 2, thereby ensuring the authenticity and accuracy of the next sampling sample.

[0065] In this embodiment, after the feed auger 7 is completely withdrawn to the position R set by the position sensor 13, the PLC controller 10 opens the pneumatic control valve 12 to blow compressed air into the closed sampling cylinder 1 to ensure that the residual material in the closed sampling cylinder 1 and on the feed auger 7 is cleaned to ensure the authenticity and accuracy of the next sampling sample.

[0066] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "axial", "radial", etc. are based on the orientations or positional relationships shown in the drawings, and are only simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the equipment or components referred to must have a specific orientation or be constructed in a specific orientation to complete the operation, and therefore cannot be understood as limitations on the present invention. In the claims, any reference symbols and numbers between brackets should not be understood as limitations on the claims.

[0067] The above description is a preferred embodiment of the present invention, which is not exhaustive or limits the present invention to the disclosed form. Those skilled in the art can design alternative embodiments with various modifications suitable for specific purposes without departing from the scope of the attached claims. Changes such as addition or equivalent replacement based on the technical solution and utility model concept of the present invention should be included in the protection scope of the present invention.

Claims

1. A travel-type material automatic online sampling device, characterized in that: include: Static equipment, conveying equipment, driving equipment and control equipment, wherein the static equipment comprises: a closed sampling barrel (1), a discharge hopper (2), a discharge pipe (3), a gas nozzle (4), a sleeve (5), and a coupling (6); the conveying equipment comprises: a feed auger (7); the driving equipment comprises: an explosion-proof motor (8), an adjustable stroke cylinder (9); the control equipment comprises: a PLC controller (10), a frequency converter (11), a pneumatic control valve (12), and a position sensor (13); the closed sampling barrel (1) is welded into a combination of two sections of a single pipe with different diameters; the feed auger (7) is installed inside the closed sampling barrel (1) and maintains coaxiality with the closed sampling barrel (1); the driving end of the closed sampling barrel (1) is connected to the closed sampling barrel (1) through the coupling The device (6) is connected to the explosion-proof motor (8), the top of the small diameter section is provided with a feed inlet, the port of the large diameter section is provided with a sealing cover, and the bottom is provided with a discharge port. The discharge hopper (2) and the discharge pipe (3) are welded in sequence, and the top of the large diameter section is provided with an air inlet, which is radially perpendicular to the discharge hopper (2). The gas nozzle (4) is installed at the air inlet of the closed sampling cylinder (1), and the pneumatic control valve (12) is provided at the air source end. The position sensor (13) is installed at the top end of the large diameter section of the closed sampling cylinder (1). The sleeve (5) is installed between the closed sampling cylinder (1) and the coupling (6), and is welded to the adjustable stroke cylinder (9) to realize the stroke control of the device. The frequency converter (11) is vertically installed on the shell of the explosion-proof motor (8).

2. The automatic online sampling device for travel-type materials according to claim 1 is characterized in that: The adjustable stroke cylinder (9) is electrically connected to the PLC controller (10).

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