Feeding detection device for chemical safety

Abstract

The utility model provides a feeding detection device for chemical safety, which belongs to the technical field of chemical feeding detection and comprises a support, a tank is mounted in the support, a sealing cover is mounted on the tank, a motor is fixed on the upper side of the support, a stirring rod is fixed at the output end of the motor and extends into the tank, and the stirring rod is fixed on the support. The sealing cover is communicated with a feeding pipe, the bottom of the tank body is communicated with a discharging pipe, an endoscope is further arranged on the sealing cover, and a detection module is further arranged in the feeding pipe. The system solves the problems that in the existing chemical production process, an operator checks information through visual observation or scanning of a material packaging label, but actual material components cannot be verified, a component detection module is not arranged, the hidden danger that high-risk chemicals are mistakenly thrown exists, and when materials are polluted or packages are damaged, the system cannot recognize the risk in time, and the production efficiency is high. And the safety is not high.

Description

Technical Field

[0001] This utility model belongs to the field of chemical feeding detection technology, specifically relating to a chemical safety feeding detection device. Background Technology

[0002] In chemical production, the feeding stage is a high-risk period for accidents. Problems such as incorrect material feeding, component deviation, leakage, or uncontrolled reaction can lead to serious safety accidents.

[0003] In existing chemical production processes, operators check information by visually inspecting or scanning material packaging labels, but they cannot verify the actual composition of the materials. There is no component detection module, which poses a risk of accidentally dispensing high-risk chemicals. Furthermore, when materials are contaminated or packaging is damaged, the system cannot identify the risks in a timely manner, resulting in low safety. Summary of the Invention

[0004] This utility model provides a chemical safety feeding detection device, which aims to solve the problems in the existing chemical production process. Operators check information by visually inspecting or scanning the material packaging labels, but cannot verify the actual composition of the materials. The lack of a component detection module poses a risk of accidentally feeding high-risk chemicals. When materials are contaminated or the packaging is damaged, the system cannot identify the risks in time, resulting in low safety.

[0005] This utility model provides a chemical safety feeding detection device, including a bracket, a tank installed in the bracket, a sealing cover installed on the tank, a motor fixed on the upper side of the bracket, a stirring rod fixed at the output end of the motor, the stirring rod extending into the inside of the tank, a feed pipe connected to the sealing cover, a discharge pipe connected to the bottom of the tank, an endoscope also provided on the sealing cover, and a detection module also provided in the feed pipe.

[0006] Furthermore, the detection module includes a near-infrared spectral probe embedded in the inner wall of the feed tube, and the detection module also includes a LIBS module, which consists of a pulsed laser and a spectrometer. The pulsed laser is installed on the inner wall of the feed tube, and the spectrometer is installed on the surface of the endoscope.

[0007] By adopting the above technical solution, the near-infrared spectral probe is embedded in the inner wall of the feed pipe and directly contacts the flowing material. The composition is analyzed in real time by the absorption and reflection characteristics of the material to near-infrared light. The pulsed laser of the LIBS module vertically irradiates the material flow, breaks down the surface to generate plasma, and collects the emission spectrum through the spectrometer on the surface of the endoscope to detect metal elements or trace impurities.

[0008] Furthermore, the axis of the near-infrared spectral probe forms an angle of 30° to 45° with the material flow direction.

[0009] By adopting the above technical solution, the included angle of 30° to 45° allows the reflected light received by the probe to avoid specular reflection interference and enhance the diffuse reflection signal.

[0010] Furthermore, the laser beam of the pulsed laser is directed perpendicularly to the material flow direction.

[0011] By adopting the above technical solution, the laser beam can maximize energy density by being incident vertically, ensuring that it breaks down the material to form a stable plasma. The focal point is 10-20mm away from the inner wall of the feed tube to avoid interference from the tube wall material with the detection results. The laser pulse is matched with the material flow rate.

[0012] Furthermore, the feed pipe is equipped with a solenoid valve located below the near-infrared spectral probe and the pulsed laser. The solenoid valve includes a main solenoid valve and a secondary solenoid valve, with the main solenoid valve located below the secondary solenoid valve.

[0013] By adopting the above technical solution, when the detection module malfunctions, the main valve closes within 0.5 seconds, and the auxiliary valve closes again after a delay of 0.2 seconds to prevent leakage caused by pressure shock. The main solenoid valve and the auxiliary solenoid valve are located downstream of the detection module to ensure that abnormal materials are completely blocked and prevented from entering the tank.

[0014] Furthermore, it also includes a communication module, which employs 5G communication.

[0015] By adopting the above technical solutions, the 5G module can transmit spectral data and valve status to the cloud or central control room in real time.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. This utility model uses a near-infrared spectral probe embedded in the inner wall of the feed pipe to directly contact the flowing material and analyze its composition in real time by observing the absorption and reflection characteristics of near-infrared light by the material.

[0018] 2. This utility model uses a LIBS module. The pulsed laser of the LIBS module vertically irradiates the material flow, breaks down the surface to generate plasma, and collects the emission spectrum through a spectrometer on the surface of the endoscope to detect metal elements or trace impurities.

[0019] 3. By setting up solenoid valves, this utility model can close the main solenoid valve and the auxiliary solenoid valve when the detection module is abnormal, to prevent leakage caused by pressure shock. The main solenoid valve and the auxiliary solenoid valve are located downstream of the detection module to ensure that abnormal materials are completely blocked and prevented from entering the tank.

[0020] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a front view structural diagram of an embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the module connection structure of an embodiment of the present utility model;

[0024] Attached reference numerals: 1. Support; 2. Tank body; 3. Sealing cap; 4. Motor; 5. Stirring rod; 6. Feed pipe; 7. Discharge pipe; 8. Endoscope. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] Reference Figure 1-2 This utility model embodiment proposes a chemical safety feeding detection device, including a bracket 1, a tank 2 installed in the bracket 1, a sealing cover 3 installed on the tank 2, a motor 4 fixed on the upper side of the bracket 1, a stirring rod 5 fixed at the output end of the motor 4, the stirring rod 5 extending into the tank 2, a feed pipe 6 connected to the sealing cover 3, a discharge pipe 7 connected to the bottom of the tank 2, an endoscope 8 also provided on the sealing cover 3, and a detection module also provided in the feed pipe 6.

[0027] Reference Figure 1-2The detection module includes a near-infrared spectral probe embedded in the inner wall of the feed tube 6. The light source is an Ocean Insight HL-2000-HP, the spectral probe is an Ocean Insight QR400-7-VIS-NIR, and the near-infrared spectrometer is a Buchi NIRFlex. The N-500 directly contacts flowing materials and analyzes their composition in real time through the absorption and reflection characteristics of near-infrared light. The axis of the near-infrared spectral probe forms an angle of 30° to 45° with the material flow direction. This angle avoids specular reflection interference and enhances diffuse reflection signals. The near-infrared light source emits broadband near-infrared light, which is transmitted to the embedded probe via optical fiber. The probe illuminates the material surface at a 30° to 45° angle. The material absorbs / reflects specific wavelength light signals, and the reflected light returns through the fiber bundle inside the probe to the near-infrared spectrometer. The spectrometer converts the light signal into an electrical signal, generating an absorbance-wavelength curve (e.g., the characteristic absorption peak of moisture at 1450nm). The embedded controller calls a pre-stored standard spectral library for comparison, judging solely by a threshold. If the matching degree is ≥95%, it is determined to be "component qualified," and a feeding permission signal is sent to the main control system. The detection module also includes a LIBS module, which consists of a pulsed laser and a spectrometer. The pulsed laser uses a Quantel... The Q-Smart850 spectrometer uses the AvantesAvaSpec-ULS2048CL-EVO. A pulsed laser is mounted on the inner wall of the feed tube 6. The laser beam is directed perpendicularly to the material flow direction. Perpendicular incident laser beam maximizes energy density, ensuring the material is broken down to form a stable plasma. The focal point is 10-20 mm from the inner wall of the feed tube 6 to avoid interference from the tube wall material. The laser pulse is matched to the material flow rate. The spectrometer is mounted on the surface of the endoscope 8. The pulsed laser of the LIBS module perpendicularly irradiates the material flow, breaking down the surface to generate plasma. The emission spectrum is collected by the spectrometer on the surface of the endoscope 8 to detect metal elements or trace impurities. A high-energy laser, focused by a lens, is directed perpendicularly onto the material surface, creating an ablation pit approximately 100 μm in diameter. The laser energy causes localized vaporization and ionization of the material, generating high-temperature plasma. During plasma cooling, the characteristic emission spectra of atoms / ions de-excited are generated. The emitted light enters the optical fiber through the sapphire window of endoscope 8 and is transmitted to the LIBS spectrometer. The equipment is pre-loaded with the NIST element database, allowing for rapid matching via hardware lookup. After the spectrometer disperses the light, it generates a wavelength-intensity spectrum, which is compared with the NIST element database to identify the element types. If an element exceeding the standard is detected, it is marked as "abnormal composition." This effect can be achieved directly through threshold judgment, triggering interlock control and preventing the main and auxiliary solenoid valves from opening.

[0028] Reference Figure 1-2The feed pipe 6 is equipped with a solenoid valve located below the near-infrared spectral probe and pulsed laser. The solenoid valve includes a main solenoid valve and a secondary solenoid valve. The main solenoid valve uses an ASCO 8320G004, and the secondary solenoid valve uses a Burkert 6013. The main solenoid valve is located below the secondary solenoid valve. When the detection module malfunctions, the main control system sends a shutdown command to both the main and secondary solenoid valves within 0.5 seconds. The main solenoid valve closes within 0.5 seconds, and the secondary solenoid valve closes a second time with a 0.2-second delay, forming a redundant seal to prevent leakage caused by pressure surges. This ensures proper closure and complete blocking of abnormal materials, preventing them from entering the tank. A communication module using 5G communication is also included. The 5G module can transmit spectral data and valve status to the cloud or central control room in real time. All electrical equipment is controlled by a unified Siemens SIMATIC S7-1500 control module. The system is controlled by a PLC and uses an Advantech UNO-2484G edge computing gateway for spectral data preprocessing, 5G communication management, and local storage. The composition of the materials to be added to the tank is pre-set in the control module for comparison. All the above components are electrically connected via a communication module. Both of these features are existing technologies.

[0029] The specific implementation method is as follows: During use, the material enters the tank 2 through the feed pipe 6. When it passes through the preset area of ​​the detection module of the feed pipe 6, the near-infrared spectral probe irradiates the material, and the material reflects light signals of a specific wavelength. The light signals are then absorbed and compared by the near-infrared spectrometer. If the composition is qualified, the material is fed in. At the same time, the pulsed laser will break down the material to form a stable plasma. During the plasma cooling process, it will emit a characteristic spectrum. The emitted light will enter the optical fiber through the endoscope and be transmitted to the LIBS spectrometer. The LIBS spectrometer will then compare it with the element database. If an element exceeding the standard is detected, it will be marked as "abnormal composition". Then the main solenoid valve and the auxiliary solenoid valve will be closed to prevent the material with abnormal composition from entering the tank and causing safety hazards.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A chemical safety feeding detection device comprising a support (1), characterized in that, The bracket (1) is equipped with a tank (2), and a sealing cover (3) is installed on the tank (2). A motor (4) is fixed on the upper side of the bracket (1), and a stirring rod (5) is fixed at the output end of the motor (4). The stirring rod (5) extends into the tank (2). A feed pipe (6) is connected to the sealing cover (3), and a discharge pipe (7) is connected to the bottom of the tank (2). An endoscope (8) is also provided on the sealing cover (3), and a detection module is also provided in the feed pipe (6).

2. The feeding detection device for chemical industry safety according to claim 1, characterized in that: The detection module includes a near-infrared spectral probe embedded in the inner wall of the feed tube (6). The detection module also includes a LIBS module, which consists of a pulsed laser and a spectrometer. The pulsed laser is installed on the inner wall of the feed tube (6), and the spectrometer is installed on the surface of the endoscope (8).

3. The chemical safety feeding detection device according to claim 2, characterized in that: The axis of the near-infrared spectroscopy probe forms an angle of 30° to 45° with the direction of material flow.

4. The chemical safety feeding detection device according to claim 2, characterized in that: The laser beam of the pulsed laser is directed perpendicularly to the material flow direction.

5. The chemical safety feeding detection device according to claim 1, characterized in that: The feed pipe (6) is equipped with a solenoid valve located below the near-infrared spectral probe and the pulsed laser. The solenoid valve includes a main solenoid valve and a secondary solenoid valve, with the main solenoid valve located below the secondary solenoid valve.

6. The chemical safety feeding detection device according to claim 1, characterized in that: It also includes a communication module, which uses 5G communication.

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