Continuous quantitative constant-speed sample feeding powder sampling device

Abstract

The utility model relates to the technical field of sampling devices, and discloses a continuous quantitative constant-speed sample feeding powder sampling device which comprises a sampling execution pipe, a motor and a spiral reamer, the motor drives the spiral reamer to rotate, and the spiral reamer is located in the sampling execution pipe. A plurality of sampling holes are formed in the upper end of the sampling execution pipe at intervals in the length direction of the sampling execution pipe, a material falling opening of the sampling execution pipe is connected with a tee joint, one end of the tee joint is used for being connected with a material conveying pipeline, and the other end of the tee joint is used for being connected with a compressed air pipeline; the continuous quantitative constant-speed sample feeding powder sampling device provided by the utility model solves the problem of how to improve the sampling accuracy and continuity.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling devices, in particular to a continuous quantitative and constant speed powder sampling device. Background Art

[0002] With the advancement of factory intelligence projects, major powder industries are investing key resources to accelerate the construction of unmanned operation, online detection, and intelligent integrated management. As a result, powder particle size distribution and elemental analysis have gradually become standard configurations in factories and are rapidly becoming popular. Online detection is particularly important. One of the key factors affecting the accuracy of detection is whether the sample obtained is sufficiently representative. If the sample is not representative, the test results may deviate from the actual situation, leading to misjudgment or incorrect decision-making. The sampling device is affected by a series of factors such as the time, flow rate, flow rate, pressure, and humidity in the process pipeline. These factors can cause the sampler to obtain insufficient sample volume, uneven product mixing, powder agglomeration, excessive fine powder, etc., which in turn affects the accuracy of instrument detection.

[0003] To ensure product quality and process control during powder production, real-time sampling and testing of powders on the production line is essential. However, traditional samplers suffer from issues such as unstable sampling volume, uneven mixing, and residual material, failing to accurately reflect the actual production line conditions. Therefore, there is an urgent need to develop a continuous quantitative powder sampling device with constant sample delivery and continuous sampling capabilities to improve sampling accuracy and continuity. Utility Model Content

[0004] The purpose of the utility model is to provide a continuous quantitative constant speed sample feeding powder sampling device to solve at least one of the above problems existing in the prior art.

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

[0006] A continuous quantitative constant speed sample delivery powder sampling device includes a sampling execution tube, a motor and a spiral reamer. The motor drives the spiral reamer to rotate. The spiral reamer is located in the sampling execution tube. The upper end of the sampling execution tube is provided with a plurality of sampling holes spaced along its length. The drop-out port of the sampling execution tube is connected to a tee. One end of the tee is used to connect to a material conveying pipeline, and the other end of the tee is used to connect to a compressed air pipeline.

[0007] Currently, most samplers used on-site are timed sampling devices, which are only suitable for laboratory sampling. The sampling method usually requires manual operation, which is not only time-consuming but also inefficient. However, the present sampling device can continuously sample as the production line runs, without the need for manual intervention. It adopts a spiral reamer structure, which can quickly and continuously obtain powder samples, greatly improving the efficiency of sampling. Traditional sampling methods often cannot guarantee the uniformity of samples, affecting subsequent analysis and processing. However, in the present sampling device, the motor controls the rotation of the spiral reamer, which can achieve constant speed sample delivery, ensuring the continuity and uniformity of sampling. In addition, the rotating spiral reamer can stir and mix the powder, ensuring that the sample obtained is uniform, improving the accuracy and reliability of the analysis. In addition, because the upper end of the sampling execution tube is provided with multiple sampling holes spaced along its length, the material falls into the sampling execution tube through the multiple sampling holes, and the sampling of multiple sampling holes ensures the representativeness of the sample. The traditional sampling method requires complex operating steps and has high requirements for operators. Poor sealing of the barrel and unreasonable speed setting will cause changes in sample fineness. However, this sampling device is simple in design and easy to operate, which can be quickly mastered and operated. The traditional sampling method is timed sampling, that is, sampling is only performed during detection. In this sampling device, the material is brought out of the sampling execution tube at a constant speed by the spiral reamer and falls into the tee through the drop hole below the spiral reamer. Then, since one end of the tee is used to connect the material conveying pipeline and the other end of the tee is used to connect the compressed air pipeline, after the compressed air enters, the material is sucked into the sampling execution tube by the Venturi negative pressure and the material conveying pipeline enters the detection instrument. It can achieve continuous sampling for 24 hours, provide the detection instrument with real-time representative samples, ensure the stability of the injection volume, and realize the isokinetic injection function. The flow rate of compressed air can be adjusted to achieve isokinetic injection, which solves the problem of large fluctuations in sample concentration due to unstable pipeline pressure. Through isokinetic sampling, continuous and stable sampling can be achieved. After a sampling cycle of the sampling device is completed, the back-flushing function of the spiral reamer can be turned on, so that the residual material is brought back to the process pipeline by the compressed air.

[0008] In summary, this sampling device can obtain representative samples 24 hours a day, improving the accuracy of instrumental testing for powder particle size analysis and elemental analysis, reducing errors caused by sample errors, lowering the frequency of on-site maintenance, and saving maintenance personnel time. Furthermore, this device can also automatically clean and discharge slag, preventing sample residue from affecting the next sampling, thus ensuring the continuity and accuracy of sampling data.

[0009] Furthermore, in order to control the opening and closing of the material conveying pipeline, a pneumatic pinch valve is provided between one end of the tee and the material conveying pipeline, and the pneumatic pinch valve is connected to one end of the tee through a third clamp.

[0010] Furthermore, in order to control the pipeline pressure, the gas pressure is adjusted to ensure the pressure balance in the sampling tube and achieve equal kinetic energy sampling. A pressure regulating port is provided at the other end of the tee, and the pressure regulating port is connected to the other end of the tee through a fourth clamp. A gas flow valve is provided on the compressed air pipeline.

[0011] Furthermore, in order to control the rotation speed of the spiral reamer, the motor is connected to the spiral reamer through a gear box.

[0012] Furthermore, in order to facilitate the assembly of the sampling execution tube, the sampling execution tube includes a connecting tube and a sampling tube, the two ends of the connecting tube are respectively connected to the gear transmission and the sampling tube, and a plurality of sampling holes are arranged at intervals along the length direction of the sampling tube at the upper end of the sampling tube, the blanking port is arranged at the lower end of the connecting tube, and the upper end of the tee is connected to the blanking port.

[0013] Furthermore, in order to facilitate the quick installation of the connecting pipe with the gear transmission and the sampling pipe respectively, the connecting pipe is connected to the gear transmission and the sampling pipe respectively through a first clamp and a second clamp.

[0014] Furthermore, in order to achieve a more uniform sampling effect, the sampling holes are circular holes, and the sampling holes are arranged at equal intervals on the upper end of the sampling tube.

[0015] The beneficial effects of the present invention are as follows: most of the samplers currently used on site are timed sampling and are only suitable for laboratory sampling. The sampling method usually requires manual operation, which is not only time-consuming but also has low sampling efficiency. However, the present sampling device can continuously sample as the production line runs without manual intervention. It adopts a spiral reamer structure, which can quickly and continuously obtain powder samples, greatly improving the efficiency of sampling. Traditional sampling methods often cannot guarantee the uniformity of samples, affecting subsequent analysis and processing. However, in the present sampling device, the motor controls the rotation of the spiral reamer, which can achieve constant speed sample delivery, ensuring the continuity and uniformity of sampling. In addition, the rotating spiral reamer can stir and mix the powder, ensuring that the sample obtained is uniform, improving the accuracy and reliability of the analysis. In addition, since the upper end of the sampling execution tube is provided with multiple sampling holes along its length, the material falls into the sampling execution tube through the multiple sampling holes, and the sampling of the multiple sampling holes ensures the representativeness of the sample. The traditional sampling method requires complex operating steps and has high requirements for operators. Poor sealing of the barrel and unreasonable speed setting will cause changes in sample fineness. However, this sampling device is simple in design and easy to operate, which can be quickly mastered and operated. The traditional sampling method is timed sampling, that is, sampling is only performed during detection. In this sampling device, the material is brought out of the sampling execution tube at a constant speed by the spiral reamer and falls into the tee through the drop hole below the spiral reamer. Then, since one end of the tee is used to connect the material conveying pipeline and the other end of the tee is used to connect the compressed air pipeline, after the compressed air enters, the material is sucked into the sampling execution tube by the Venturi negative pressure and the material conveying pipeline enters the detection instrument. It can achieve continuous sampling for 24 hours, provide the detection instrument with real-time representative samples, ensure the stability of the injection volume, and realize the isokinetic injection function. The flow rate of compressed air can be adjusted to achieve isokinetic injection, which solves the problem of large fluctuations in sample concentration due to unstable pipeline pressure. Through isokinetic sampling, continuous and stable sampling can be achieved. After a sampling cycle of the sampling device is completed, the back-flushing function of the spiral reamer can be turned on, so that the residual material is brought back to the process pipeline by the compressed air.

[0016] In summary, this sampling device can obtain representative samples 24 hours a day, improving the accuracy of instrumental testing for powder particle size analysis and elemental analysis, reducing errors caused by sample errors, lowering the frequency of on-site maintenance, and saving maintenance personnel time. Furthermore, this device can also automatically clean and discharge slag, preventing sample residue from affecting the next sampling, thus ensuring the continuity and accuracy of sampling data. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model.

[0019] In the figure: motor 1; screw reamer 2; sampling hole 3; tee 4; pneumatic pinch valve 5; connecting pipe 6; sampling tube 7; first clamp 8; second clamp 9; gear box 10; pressure regulating port 11; third clamp 12; fourth clamp 13; fifth clamp 14. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be briefly introduced below in conjunction with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structures of the drawings is only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0021] Example 1:

[0022] like Figure 1-Figure 2 As shown, this embodiment provides a continuous quantitative constant speed sample delivery powder sampling device, including a sampling execution tube, a motor 1 and a spiral reamer 2. The motor 1 drives the spiral reamer 2 to rotate. The spiral reamer 2 is located in the sampling execution tube. The upper end of the sampling execution tube is provided with a plurality of sampling holes 3 spaced along its length. The drop-out port of the sampling execution tube is connected to a tee 4. One end of the tee 4 is used to connect to a material conveying pipeline, and the other end of the tee 4 is used to connect to a compressed air pipeline.

[0023] Currently, most samplers used on-site are timed sampling devices, which are only suitable for laboratory sampling. The sampling method usually requires manual operation, which is not only time-consuming but also inefficient. However, the present sampling device can continuously sample as the production line runs, without manual intervention. It adopts the structure of the spiral reamer 2, which can quickly and continuously obtain powder samples, greatly improving the sampling efficiency. Traditional sampling methods often cannot guarantee the uniformity of the sample, affecting subsequent analysis and processing. However, in the present sampling device, the motor 1 controls the rotation of the spiral reamer 2, which can achieve constant speed sample delivery, ensuring the continuity and uniformity of sampling. In addition, the rotating spiral reamer 2 can stir and mix the powder, ensuring that the sample obtained is uniform, improving the accuracy and reliability of the analysis. In addition, because the upper end of the sampling execution tube is provided with multiple sampling holes 3 spaced along its length, the material falls into the sampling execution tube through the multiple sampling holes 3, and the multiple sampling holes 3 are sampled to ensure the representativeness of the sample. The traditional sampling method requires complex operating steps and has high requirements for operators. Poor sealing of the barrel and unreasonable speed setting will cause changes in sample fineness. However, the present sampling device is simple in design and easy to operate, and can be quickly mastered and operated. The traditional sampling method is timed sampling, that is, sampling is only performed during detection. In the present sampling device, the material is brought out of the sampling execution tube at a constant speed by the spiral reamer 2 and falls into the tee 4 through the drop hole below the spiral reamer 2. Then, since one end of the tee 4 is used to connect the material conveying pipeline and the other end of the tee 4 is used to connect the compressed air pipeline, after the compressed air enters, the material is sucked into the sampling execution tube by the venturi negative pressure and the material conveying pipeline enters the detection instrument. It can achieve continuous sampling for 24 hours, provide the detection instrument with real-time representative samples, ensure the stability of the injection volume, and realize the isokinetic injection function. The flow rate of the compressed air can be adjusted to achieve isokinetic injection, which solves the problem of large fluctuations in sample concentration due to unstable pipeline pressure. Through isokinetic sampling, continuous and stable sampling can be achieved. After a sampling cycle of the sampling device is completed, the back-flushing function of the spiral reamer 2 can be turned on, so that the residual material is brought back to the process pipeline by the compressed air.

[0024] In summary, this sampling device can obtain representative samples 24 hours a day, improving the accuracy of instrumental testing for powder particle size analysis and elemental analysis, reducing errors caused by sample errors, lowering the frequency of on-site maintenance, and saving maintenance personnel time. Furthermore, this device can also automatically clean and discharge slag, preventing sample residue from affecting the next sampling, thus ensuring the continuity and accuracy of sampling data.

[0025] Example 2:

[0026] This embodiment is optimized based on the above embodiment 1.

[0027] In order to control the opening and closing of the material conveying pipeline, a pneumatic pinch valve 5 is provided between one end of the tee 4 and the material conveying pipeline. The pneumatic pinch valve 5 is connected to one end of the tee 4 through a third clamp 12 .

[0028] Example 3:

[0029] This embodiment is optimized based on the above embodiment 1.

[0030] In order to control the pipeline pressure, the gas pressure is adjusted to ensure the pressure balance in the sampling tube and achieve equal kinetic energy sampling. A pressure regulating port 11 is provided at the other end of the tee 4. The pressure regulating port 11 is connected to the other end of the tee 4 through a fourth clamp 13. A gas flow valve is provided on the compressed air pipeline.

[0031] Example 4:

[0032] This embodiment is optimized based on the above embodiment 1.

[0033] In order to control the rotation speed of the spiral reamer 2 , the motor 1 is connected to the spiral reamer 2 via a gear box 10 .

[0034] Example 5:

[0035] This embodiment is optimized based on the above-mentioned embodiment 4.

[0036] In order to facilitate the assembly of the sampling execution tube, the sampling execution tube includes a connecting tube 6 and a sampling tube 7. The two ends of the connecting tube 6 are respectively connected to the gear transmission 10 and the sampling tube 7. A plurality of sampling holes 3 are arranged at intervals along the length direction of the sampling tube 7 at the upper end of the sampling tube 7. The blanking port is arranged at the lower end of the connecting tube 6. The upper end of the tee 4 is connected to the blanking port through the fifth clamp 14.

[0037] Example 6:

[0038] This embodiment is optimized based on the above embodiment 5.

[0039] In order to facilitate quick installation of the connecting pipe 6 with the gear transmission 10 and the sampling pipe 7 , the connecting pipe 6 is connected to the gear transmission 10 and the sampling pipe 7 through a first clamp 8 and a second clamp 9 .

[0040] Example 7:

[0041] This embodiment is optimized based on the above embodiment 1.

[0042] In order to achieve a more uniform sampling effect, the sampling holes 3 are circular holes, and the sampling holes 3 are arranged at equal intervals on the upper end of the sampling tube 7 .

[0043] The working steps of this sampling device:

[0044] 1. Turn on motor 1, adjust the speed of motor 1, and set the sampling volume and feeding speed;

[0045] 2. The material falls into the sampling tube 7 from the sampling hole 3 at the upper end of the sampling tube 7. Multiple sampling holes 3 are used to ensure the representativeness of the sample;

[0046] 3. The material is brought out of the sampling tube 7 at a constant speed by the spiral reamer 2 and then falls into the tee 4 below;

[0047] 4. Open the pneumatic pinch valve 5, and the material is sucked into the sampling tube 7 and the detection instrument by the Venturi negative pressure;

[0048] 5. Turn on the gas flow controller and adjust the gas pressure to ensure pressure balance in the sampling tube 7 to achieve equal kinetic energy sampling;

[0049] 6. After a sampling cycle is complete, the backflush function for the spiral reamer 2 is activated. That is, the pneumatic pinch valve 5 is closed, and compressed air is backflushed from the tee 4 to the sampling tube 7. The residual material is carried back into the process pipeline by the compressed air, achieving a carryover prevention function and preventing the influence of residual material from the previous sampling on the next sampling when producing different batches of products. Repeat the above steps to perform continuous quantitative isokinetic powder sampling.

[0050] It should be noted that when sampling with the spiral reamer 2, the pitch of the spiral reamer 2 and the spacing between the sampling holes 3 should be designed according to the characteristics of each material. The sampling volume is set according to the testing requirements, and the sampling operation is automatically performed. In the specific implementation of this technical solution, the pitch of the spiral reamer 2 can be set differently according to the characteristics of different materials such as glass fiber, cement, and battery materials.

[0051] During the sampling process, the sample conveying speed should remain stable to ensure that the particle size distribution of the sample is consistent with that of the overall powder. This sampling device can perform continuous sampling operations through preset parameters, continuously and quantitatively obtain samples from the powder, ensure that the sampling volume remains stable, and at the same time avoid destructive effects on the sample during the sampling process. This sampling device has the ability to properly handle the powder, such as stirring and mixing, to ensure the uniformity of the sample. In addition, it also prevents the powder from agglomerating or segregating during the sampling process. In order to improve efficiency and reduce human errors, the device can introduce advanced control algorithms and sensor technology to achieve automatic control and adjustment, thereby realizing fully automated operation.

[0052] It should be noted that during the sampling process, the safe operation of the sampling device itself should be ensured to prevent accidents caused by failures or other reasons. Safety protection mechanisms such as overload protection and fault alarms can be introduced.

[0053] The sampling device can be used in practical applications to deliver samples at a constant rate. Based on parameters such as pressure, flow rate, and flow rate within the process pipeline, the sampling speed is controlled to maintain a constant level, ensuring continuous and uniform sampling. Adding a control system to achieve intelligent control can also improve production efficiency and product quality control by linking with the powder production process control system.

[0054] This sampling device can be designed in various models. Different product models can be selected based on parameters such as pressure, flow rate, and flow rate within the on-site process pipeline to ensure that representative samples can be obtained under various process conditions. During the powder production process, this sampling device automatically performs sampling operations without manual intervention, continuously extracting representative samples, and can automatically and quantitatively and uniformly feed the samples into the testing instrument for testing, while also preventing the influence of residual samples from the previous sampling on the next sampling.

[0055] The sampling device is compact in design, small in size and easy to maintain. It can be easily maintained by one person, while traditional samplers require 2-3 people to maintain.

[0056] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A continuous quantitative constant speed powder sampling device, characterized by: It includes a sampling execution tube, a motor and a spiral reamer. The motor drives the spiral reamer to rotate. The spiral reamer is located in the sampling execution tube. The upper end of the sampling execution tube is provided with a plurality of sampling holes spaced along its length. The blanking port of the sampling execution tube is connected to a tee. One end of the tee is used to connect to a material conveying pipeline, and the other end of the tee is used to connect to a compressed air pipeline.

2. The continuous quantitative constant speed powder sampling device according to claim 1, characterized in that: A pneumatic pinch valve is provided between one end of the tee and the material conveying pipeline, and the pneumatic pinch valve is connected to one end of the tee through a third clamp.

3. The continuous quantitative constant speed powder sampling device according to claim 1, characterized in that: The other end of the tee is provided with a pressure regulating port, and the pressure regulating port is connected to the other end of the tee through a fourth clamp. A gas flow valve is provided on the compressed air pipeline.

4. The continuous quantitative constant speed powder sampling device according to claim 1, characterized in that: The motor is connected to the spiral reamer through a gear box.

5. The continuous quantitative constant speed powder sampling device according to claim 4, characterized in that: The sampling execution tube includes a connecting tube and a sampling tube. The two ends of the connecting tube are respectively connected to the gear transmission and the sampling tube. A plurality of sampling holes are arranged at intervals along the length direction of the sampling tube at the upper end of the sampling tube. The blanking port is arranged at the lower end of the connecting tube, and the upper end of the tee is connected to the blanking port.

6. The continuous quantitative constant speed powder sampling device according to claim 5, characterized in that: The connecting pipe is connected to the gear box and the sampling pipe respectively through a first clamp and a second clamp.

7. The continuous quantitative constant speed powder sampling device according to claim 1, characterized in that: The sampling holes are circular holes, and the sampling holes are arranged at equal intervals on the upper end of the sampling tube.

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