Laboratory granularity detection system

Abstract

The utility model relates to the technical field of particle size detection equipment, and discloses a laboratory particle size detection system, which comprises a vibration feeder and a laser particle analyzer, a feeding hole of the vibration feeder is connected with a blanking pipe, and the blanking pipe is provided with a feeding funnel; a discharge port of the vibration feeder is connected with a sample introduction pipe, a sample introduction pinch valve is arranged on the sample introduction pipe, a discharge port of the sample introduction pinch valve is connected with a Venturi tube, a discharge port of the Venturi tube is connected with a feed port of the laser particle analyzer, a discharge port of the laser particle analyzer is connected with a sample return pipe, and the sample return pipe is connected with a feed port of the vibration feeder. A sample return pinch valve is arranged on the sample return pipe; the laboratory particle size detection system provided by the utility model solves the problem that the existing laboratory laser particle size analyzer has higher requirements on samples.

Description

Technical Field

[0001] The utility model relates to the technical field of particle size detection equipment, in particular to a laboratory particle size detection system. Background Art

[0002] Existing laboratory laser particle size analyzers have high sample requirements. For example, some samples may contain a large number of bubbles or impurities, which may affect the accuracy of particle size measurement. In addition, some samples may require pretreatment before measurement, which increases the complexity and cost of the measurement process. Utility Model Content

[0003] The purpose of the utility model is to provide a laboratory particle size detection system to solve at least one of the above problems existing in the prior art.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A laboratory particle size detection system includes a vibrating feeder and a laser particle size analyzer, wherein the feed port of the vibrating feeder is connected to a drop pipe provided with a feed funnel; the discharge port of the vibrating feeder is connected to a sample injection tube provided with a sample injection pinch valve, the discharge port of the sample injection pinch valve is connected to a venturi tube, the discharge port of the venturi tube is connected to the feed port of the laser particle size analyzer, the discharge port of the laser particle size analyzer is connected to a sample return tube provided with a sample return pinch valve.

[0006] In this technical solution, the feed funnel facilitates sample entry and is transported to the vibrating feeder through the drop tube. The vibrating feeder vibrates at a certain frequency to initially disperse the sample, and then evenly transports it to the sample pool of the laser particle size analyzer for detection through the sampling tube and venturi tube. When the sample passes through the sample pool of the laser particle size analyzer, the system automatically detects it and transmits the detection results to the host computer. After the sample enters the sampling tube, it is sucked in by the negative pressure of the venturi tube and fully dispersed. The sampling tube is equipped with a sampling pinch valve. At the beginning of the measurement, the sampling pinch valve opens and the sample enters the laser particle size analyzer. After the measurement is completed, the sampling pinch valve closes to prevent the material from contaminating the lens in the laser particle size analyzer. The discharge port of the laser particle size analyzer is connected to the return sample tube. The sample after detection is sent to the return sample pinch valve by the return sample tube. The return sample pinch valve opens during detection and closes after detection. The above structural design can realize fully automatic detection without manual intervention and has high detection efficiency. Among them, the vibrating feeder can fully disperse the sample entering the feed funnel. The device can make the sample uniform and then fall into the receiving tube, thus avoiding the situation where the sample is concentrated in one place or piled up. It completely solves the problems of sample dispersion, equal amount delivery and abnormal concentration fluctuations, thereby ensuring that the concentration of the sample is stable after entering the detection instrument, and improving the stability and accuracy of the measurement.

[0007] Furthermore, in order to be able to control the injection volume, a flow control valve is provided at the discharge port of the vibrating feeder.

[0008] Furthermore, it also includes a shell, and the feed funnel is arranged on the top of the shell.

[0009] Furthermore, a dust collection interface is provided at the end of the sample return tube. The dust collection interface needs to be connected to a dust collection device, and a standard dust collection interface is reserved to enable fully automatic sample return.

[0010] Furthermore, the vibrating feeder and the laser particle size analyzer are arranged in the housing, and the vibrating feeder is located above the laser particle size analyzer.

[0011] Furthermore, in order to facilitate connection with the dust collector, the dust collection interface is arranged on the side wall of the shell.

[0012] Furthermore, the laser particle size analyzer is provided with a solenoid valve, which is connected to a first compressed air pipeline. When the solenoid valve is opened, the laser particle size analyzer is supplied with the required compressed air through the first compressed air pipeline.

[0013] Furthermore, the device further comprises a second compressed air pipeline connected to the venturi tube, and a gas flow meter is connected to the second compressed air pipeline.

[0014] Furthermore, a power supply and a control circuit board are provided in the housing.

[0015] The beneficial effects of the present invention are as follows: in the present technical solution, the feeding funnel facilitates the entry of the sample, and the sample is transported to the vibrating feeder through the drop tube. The vibrating feeder vibrates at a certain frequency to initially disperse the sample, and then evenly transports the sample to the sample pool of the laser particle size analyzer through the sampling tube and the venturi tube for detection. When the sample passes through the sample pool of the laser particle size analyzer, the system automatically detects the sample and transmits the detection result to the host computer. After the sample enters the sampling tube, it is sucked in by the negative pressure of the venturi tube and the sample is fully dispersed. The sampling tube is provided with a sampling pinch valve. When the measurement starts, the sampling pinch valve opens and the sample enters the laser particle size analyzer. After the measurement is completed, the sampling pinch valve closes to prevent the material from contaminating the lens in the laser particle size analyzer. The discharge port of the laser particle size analyzer is connected to a return sample tube. The sample after detection is sent to the return sample pinch valve by the return sample tube. The return sample pinch valve opens during detection and closes after detection. The above structural design can realize fully automatic detection without manual intervention and has high detection efficiency. Among them, the vibrating feeder can fully disperse the sample entering the feed funnel. The device can make the sample uniform and then fall into the receiving tube, thus avoiding the situation where the sample is concentrated in one place or piled up. It completely solves the problems of sample dispersion, equal amount delivery and abnormal concentration fluctuations, thereby ensuring that the concentration of the sample is stable after entering the detection instrument, and improving the stability and accuracy of the measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the present utility model.

[0017] In the figure: vibrating feeder 1; laser particle size analyzer 2; drop pipe 3; feed funnel 4; sample injection tube 5; sample injection pinch valve 6; venturi tube 7; return sample tube 8; return sample pinch valve 9; flow control valve 10; housing 11; dust collection interface 12; solenoid valve 13; second compressed air pipeline 14; gas flow meter 15. DETAILED DESCRIPTION

[0018] 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.

[0019] Example 1:

[0020] like Figure 1 As shown, this embodiment provides a laboratory particle size detection system, including a vibrating feeder 1 and a laser particle size analyzer 2, the feed port of the vibrating feeder 1 is connected to a drop pipe 3, and the drop pipe 3 is provided with a feed funnel 4; the discharge port of the vibrating feeder 1 is connected to a sample injection tube 5, and the sample injection tube 5 is provided with a sample injection pinch valve 6, and the discharge port of the sample injection pinch valve 6 is connected to a venturi tube 7, and the discharge port of the venturi tube 7 is connected to the feed port of the laser particle size analyzer 2, and the discharge port of the laser particle size analyzer 2 is connected to a return sample tube 8, and the return sample tube 8 is provided with a return sample pinch valve 9.

[0021] In this technical solution, the feed funnel 4 facilitates sample entry and is transported to the vibrating feeder 1 through the drop tube 3. The vibrating feeder 1 vibrates at a certain frequency to initially disperse the sample. After that, the sample is evenly transported to the sample pool of the laser particle size analyzer 2 for testing through the sampling tube 5 and the venturi tube 7. When the sample passes through the sample pool of the laser particle size analyzer 2, the system automatically detects the sample and transmits the test results to the host computer. After the sample enters the sampling tube 5, it is sucked in by the venturi tube 7 under negative pressure and fully dispersed. The sampling tube 5 is equipped with a sampling pinch valve 6. At the beginning of the measurement, the sampling pinch valve 6 opens to allow the sample to enter the laser particle size analyzer 2. After the measurement is completed, the sampling pinch valve 6 closes to prevent the material from contaminating the lens in the laser particle size analyzer 2. The discharge port of the laser particle size analyzer 2 is connected to the return sample tube 8. The sample after testing is sent to the return sample pinch valve 9 by the return sample tube 8. The return sample pinch valve 9 opens during testing and closes after testing. The above structural design can realize fully automatic testing without manual intervention and has high detection efficiency. Among them, the vibrating feeder 1 can fully disperse the sample entering the feed funnel 4. The device can make the sample uniform and then fall into the receiving tube, thereby avoiding the situation where the sample is concentrated in one place or piled up, and completely solves the problems of sample dispersion, equal amount delivery and abnormal concentration fluctuations, thereby ensuring that the concentration of the sample is stable after entering the detection instrument, and improving the stability and accuracy of the measurement.

[0022] Example 2:

[0023] This embodiment is optimized based on the above embodiment 1.

[0024] In order to control the injection volume, a flow control valve 10 is provided at the discharge port of the vibrating feeder 1 .

[0025] Example 3:

[0026] This embodiment is optimized based on the above embodiment 2.

[0027] The apparatus further comprises a housing 11, a feed hopper 4 being disposed on top of the housing 11. A power supply and a control circuit board are disposed within the housing 11. A vibrating feeder 1 and a laser particle size analyzer 2 are disposed within the housing 11, with the vibrating feeder 1 being located above the laser particle size analyzer 2.

[0028] Example 4:

[0029] This embodiment is optimized based on the above embodiment 3.

[0030] The end of the sample return tube 8 is provided with a dust collection interface 12. The dust collection interface 12 needs to be connected to a dust collection device, and a standard dust collection interface 12 is reserved for fully automatic sample return. In order to facilitate connection with the dust collector, the dust collection interface 12 is set on the side wall of the housing 11.

[0031] Example 5:

[0032] This embodiment is optimized based on the above-mentioned embodiment 4.

[0033] Laser particle size analyzer 2 is equipped with a solenoid valve 13, which is connected to a first compressed air line (not shown). When solenoid valve 13 is opened, the first compressed air line supplies the laser particle size analyzer 2 with the required compressed air. A second compressed air line 14 is also connected to the venturi tube 7 and is connected to a gas flowmeter 15.

[0034] Specific workflow:

[0035] Turn on the electrical switch - turn on the host computer - the system starts self-test - self-test is completed - the robotic arm sends the material to be tested into the feed port - the system automatically turns on the vibrating feeder 1 - the sample pinch valve 6 automatically opens - the material is sucked in and dispersed by the negative pressure of the venturi tube 7 - the laser particle size analyzer 2 tests the material - the return sample pinch valve 9 opens - the tested material enters the factory dust collection device.

[0036] This technical solution primarily integrates a vibrating sampling system, a detection system, analysis software, an electrical control system, and a dust collection system. It fully meets the requirements for material particle size testing in intelligent laboratories, achieving true unmanned operation. The implementation of this equipment can streamline laboratory staffing, especially in factories with multiple production lines within a single facility, reducing travel time and eliminating occupational safety risks associated with manual sampling. Test data is more accurate, eliminating human influence and reducing quality errors. This stabilizes operating conditions, reduces unreliable downtime, and improves the consistency of material quality across all production links. It plays a significant role in energy conservation and carbon reduction, helping the cement and steel industries achieve dual energy and carbon control targets. The intelligent laboratory particle size testing system enables fully automated sampling and testing, providing accurate guidance for automated production. The intelligent laboratory laser particle size analyzer 2 performs fully automated testing without manual intervention, outputting up to 144 sets of test data per day. The system can be equipped with an industrial-grade dust collector or a standard sample return port for fully automated sample return. The system provides data fitting, fluctuation trending, outlier alarms, and mean analysis. Users can set the required test data based on quality control requirements, such as less than 3um, 3-32um, 45um, 80um, and 200um. The system automatically saves the data, and customers can review the test data at any time. The electrical control system, detection system, and dust collection system are highly integrated, fully meeting the requirements of smart laboratories for small space, high detection frequency, and system stability. The smart laboratory particle size detection system can completely replace manual testing, reducing the workload of 4-6 laborers in the laboratory. The system can be connected to the factory APC system to meet the requirements of intelligent production.

[0037] 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 laboratory particle size detection system, characterized by: The invention comprises a vibrating feeder and a laser particle size analyzer, wherein the feed port of the vibrating feeder is connected to a drop pipe, and the drop pipe is provided with a feed funnel; the discharge port of the vibrating feeder is connected to a sample injection tube, and the sample injection tube is provided with a sample injection pinch valve, and the discharge port of the sample injection pinch valve is connected to a venturi tube, and the discharge port of the venturi tube is connected to the feed port of the laser particle size analyzer, and the discharge port of the laser particle size analyzer is connected to a sample return tube, and the sample return tube is provided with a sample return pinch valve.

2. A laboratory particle size detection system according to claim 1, characterized in that: A flow control valve is provided at the discharge port of the vibrating feeder.

3. A laboratory particle size detection system according to claim 1, characterized in that: The utility model further comprises a shell, wherein the feeding funnel is arranged on the top of the shell.

4. A laboratory particle size detection system according to claim 3, characterized in that: A dust collection interface is provided at the end of the sample return tube.

5. A laboratory particle size detection system according to claim 3, characterized in that: The vibrating feeder and the laser particle size analyzer are arranged in the housing, and the vibrating feeder is located above the laser particle size analyzer.

6. A laboratory particle size detection system according to claim 4, characterized in that: The dust collection interface is arranged on the side wall of the shell.

7. A laboratory particle size detection system according to claim 1, characterized in that: The laser particle size analyzer is provided with a solenoid valve, and the solenoid valve is connected to a first compressed air pipeline.

8. A laboratory particle size detection system according to claim 1, characterized in that: The device further comprises a second compressed air pipeline connected to the venturi tube, wherein the second compressed air pipeline is connected to a gas flow meter.

9. A laboratory particle size detection system according to claim 3, characterized in that: A power supply and a control circuit board are arranged in the shell.

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