Electrostatic interception system and method

Abstract

The present invention discloses an electrostatic interception system and method, wherein the electrostatic interception system comprises an electrostatic generator, a shunt, an electrostatic generating rod, a negative pressure system, an ion screen and a negative pressure generator; the electrostatic generator provides high voltage electricity to the electrostatic generating rod through the shunt, so that the electrodes on the surface of the electrostatic generating rod form an electrostatic force field; the negative pressure generator is connected to the negative pressure system, and is used to form a negative pressure airflow in the negative pressure system; the negative pressure system is used to provide a flow channel for charged particles under the action of the negative pressure airflow; the ion screen is arranged in the negative pressure system, and is arranged opposite to the electrostatic generating rod, and is used to intercept charged particles under the action of the electrostatic force field. The present invention can efficiently intercept charged particles.

Description

Technical Field

[0001] The present invention relates to the technical field of particle treatment, and in particular to an electrostatic interception system and method. Background Art

[0002] In industrial production and scientific research experiments, the treatment and collection of charged particles is an important technical issue. Currently, the commonly used methods for charged particle treatment mainly include mechanical filtration, electrostatic adsorption and chemical adsorption. Mechanical filtration is simple to operate, but the filtration efficiency is low and it is easy to cause filter material clogging; chemical adsorption will introduce new chemical substances, which is easy to interfere with subsequent experiments or treatments.

[0003] Existing electrostatic adsorption technology usually uses a single electrostatic force field to intercept particles. Since charged particles are unevenly distributed in space, it is difficult to achieve efficient interception by relying solely on the electrostatic force field. At the same time, the electrostatic force field has a limited range of action. For charged particles moving at a faster speed, a single electrostatic force is difficult to achieve effective capture.

[0004] In addition, the charged particle collection devices in the prior art generally have problems such as complex structure and high energy consumption. Some devices adopt a multi-stage filtration structure, which not only increases the equipment cost, but also increases the difficulty of maintenance. Due to the lack of effective control means, the strength of the electrostatic force field is difficult to accurately adjust, which affects the interception effect of charged particles. Especially for charged particles with smaller particle sizes, it is difficult for the prior art to simultaneously meet the requirements of efficient interception and energy conservation and environmental protection. In addition, most of the charged particle collection systems in the prior art lack effective control and monitoring means for the collection process, and cannot adjust the working parameters in time according to actual needs.

[0005] Therefore, it is urgent to propose an electrostatic interception system and method to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide an electrostatic interception system and method, which can efficiently intercept charged particles.

[0007] In order to solve the above technical problems, the present invention provides an electrostatic interception system, comprising an electrostatic generator, a splitter, an electrostatic generating rod, a negative pressure system, an ion screen and a negative pressure generator;

[0008] The electrostatic generator provides high voltage electricity to the electrostatic generating rod through the splitter, so that the electrodes on the surface of the electrostatic generating rod form an electrostatic force field; the negative pressure generator is connected to the negative pressure system, and is used to form a negative pressure airflow in the negative pressure system; the negative pressure system is used to provide a flow channel for charged particles under the action of the negative pressure airflow; the ion screen is arranged in the negative pressure system and is arranged opposite to the electrostatic generating rod, and is used to intercept charged particles under the action of the electrostatic force field.

[0009] Further, the ion screen includes a support frame, a conductive mesh arranged on the support frame, and a storage table located at the bottom of the support frame;

[0010] The storage platform screens the ions into a plurality of areas; the conductive net is connected to the electrostatic generating rod via a conductor to enhance the strength of the electrostatic force field.

[0011] Furthermore, it also includes a pipeline; the negative pressure system is connected to the negative pressure generator through the pipeline.

[0012] Further, the negative pressure system comprises a first chamber, a second chamber and a third chamber which are connected in sequence;

[0013] The ion sieve is arranged in the second chamber; one end of the pipe is connected to the third chamber, and the other end is connected to the negative pressure generator to form a negative pressure airflow; the first chamber is used to receive charged particles to be processed, the second chamber is used to intercept the charged particles under the action of the electrostatic force field using the ion sieve, and the third chamber is used to collect the intercepted charged particles.

[0014] Furthermore, it also includes a control system for controlling the start and stop of the negative pressure generator and the working state of the electrostatic generating rod.

[0015] Furthermore, the control system includes a processor, a memory, a control bus, a communication device and a display terminal; the processor and the memory are connected to the communication device via the control bus, and the communication device is connected to the display terminal.

[0016] Furthermore, the static electricity generating rod includes an insulating rod, an interface arranged at one end of the insulating rod, and the electrode arranged on the surface of the insulating rod; the interface is connected to the shunt for receiving high voltage electricity.

[0017] In addition, the present invention also proposes an electrostatic interception method, using the electrostatic interception system described above, which specifically includes the following:

[0018] Start the negative pressure generator to form negative pressure airflow in the negative pressure system;

[0019] Start the electrostatic generator and provide high voltage electricity to the electrostatic generating rod through the splitter to form an electrostatic force field;

[0020] Under the combined effect of the negative pressure airflow and the electrostatic force field, the charged particles in the negative pressure system are intercepted by an ion screen.

[0021] Furthermore, the ion sieve's interception process for charged particles includes: the charged particles to be processed enter the first chamber of the negative pressure system under the action of the negative pressure airflow; the charged particles are intercepted by the ion sieve in the second chamber and transported to the third chamber for collection.

[0022] Furthermore, the particle size of the charged particles is less than 50 μm.

[0023] Through the above technical solution, the present invention has the following beneficial effects:

[0024] The synergistic effect of negative pressure airflow and electrostatic force field improves the interception efficiency of charged particles. The negative pressure system provides a directional flow channel for charged particles, and the coordinated use of electrostatic force field and ion screen enhances the interception ability of charged particles and achieves efficient interception.

[0025] The working stability of the system is improved through the partitioned ion screen and the negative pressure system with multi-chamber structure. The introduction of the control system realizes the precise control of the interception process, and the working parameters can be adjusted according to actual needs, further improving the applicability and reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of an electrostatic interception system in one embodiment of the present invention;

[0027] Figure 2 It is a schematic diagram of the structure of a negative pressure system and a negative pressure generator in an electrostatic interception system in one embodiment of the present invention;

[0028] Figure 3 It is a schematic diagram of the structure of the ion screen in the electrostatic interception system in the first embodiment of the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the ion screen in the electrostatic interception system in the second embodiment of the present invention;

[0030] Figure 5 It is a schematic diagram of the structure of the ion screen in the electrostatic interception system in the third embodiment of the present invention;

[0031] Figure 6 It is a schematic diagram of the structure of the ion screen in the electrostatic interception system in the fourth embodiment of the present invention;

[0032] Figure 7 It is a schematic diagram of the structure of the ion screen in the electrostatic interception system in the fifth embodiment of the present invention;

[0033] Figure 8 It is a schematic structural diagram of the electrostatic generating rod in the electrostatic interception system in the first embodiment of the present invention;

[0034] Fig. 9It is a schematic diagram of the overall structure of the electrostatic interception system in the first embodiment of the present invention;

[0035] Fig.10 It is a flow chart of the electrostatic interception method in the first embodiment of the present invention;

[0036] Fig.11 It is a specific flow chart of the electrostatic interception method in the first embodiment of the present invention.

[0037] In the figure, 1, electrostatic generator; 101, power supply;

[0038] 2. Splitter;

[0039] 3. static electricity generating rod; 301. insulating rod; 302. first interface; 303. electrode;

[0040] 4. Negative pressure system; 401. Second interface; 402. Pipeline; 403. Negative pressure generator; 404. First chamber; 405. Second chamber; 406. Third chamber; 407. Charged particles;

[0041] 5. ion screen; 501. conductive net; 502. storage table; 503. support frame;

[0042] 601, processor; 602, memory; 603, control bus; 604, communication device; 605, display terminal. DETAILED DESCRIPTION

[0043] The following will be described in more detail with reference to the accompanying drawings, wherein preferred embodiments of the present invention are shown, and it should be understood that those skilled in the art may modify the present invention described herein while still achieving the beneficial effects of the present invention. Therefore, the following description should be understood as being widely known to those skilled in the art and not as a limitation of the present invention.

[0044] The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and are not in exact proportions, and are only used to facilitate and clearly assist in illustrating the purpose of the embodiments of the present invention.

[0045] like Figure 1-Figure 2 As shown, an embodiment of the present invention provides a convenient and practical electrostatic interception system, including an electrostatic generator 1, a splitter 2, an electrostatic generating rod 3, a negative pressure system 4, an ion screen 5 and a negative pressure generator 403.

[0046] Specifically, the electrostatic generator 1 provides high voltage electricity to the electrostatic generating rod 3 through the splitter 2, so that the electrode 303 on the surface of the electrostatic generating rod 3 forms an electrostatic force field; the negative pressure generator 403 is connected to the negative pressure system 4, and is used to form a negative pressure airflow in the negative pressure system 4; the negative pressure system 4 is used to provide a flow channel for charged particles 407 under the action of the negative pressure airflow; the ion screen 5 is arranged in the negative pressure system 4, and is arranged opposite to the electrostatic generating rod 3, and is used to intercept the charged particles 407 under the action of the electrostatic force field.

[0047] This embodiment forms a controllable electrostatic force field through the coordinated use of the electrostatic generator 1, the splitter 2 and the electrostatic generating rod 3, and significantly improves the interception efficiency of the charged particles 407 by combining the directional airflow generated by the negative pressure system 4. In a specific example, when the charged particles 407 with a particle size of 30 μm are processed, the interception efficiency can reach more than 95%. In addition, the design of the negative pressure system 4 avoids the diffusion and leakage of the charged particles 407, and improves the environmental protection and safety of the system.

[0048] In addition, in this embodiment, the electrostatic interception system further includes a power supply 101 ; the power supply 101 is electrically connected to the electrostatic generator 1 , and is used to provide a working voltage for the electrostatic generator 1 .

[0049] In addition, the present embodiment further includes a pipe 402. Specifically, the negative pressure system 4 is connected to the negative pressure generator 403 through the pipe 402. The pipe 402 can be made of insulating materials such as polytetrafluoroethylene, and the inner wall is specially treated to reduce static electricity accumulation. In a specific example, the inner diameter of the pipe 402 can be selected within the range of 30-100 mm according to the flow demand, and the pipe wall thickness is 3-5 mm. This design not only improves the insulation performance of the system, but also reduces energy loss.

[0050] In this embodiment, continue to refer to Figure 2 As shown, the negative pressure system 4 includes a first chamber 404 , a second chamber 405 and a third chamber 406 which are connected in sequence; the ion screen 5 is arranged in the second chamber 405 .

[0051] Specifically, the ion sieve 5 is arranged in the second chamber 405; one end of the pipe 402 is connected to the third chamber 406, and the other end is connected to the negative pressure generator 403 to form a negative pressure airflow; the first chamber 404 is used to receive the charged particles 407 to be processed, the second chamber 405 is used to use the ion sieve 5 to intercept the charged particles 407 under the action of the electrostatic force field, and the third chamber 406 is used to collect the intercepted charged particles 407.

[0052] The series design of the three chambers in this embodiment realizes the classification treatment of the charged particles 407. In a specific example, the first chamber 404 can be configured as a funnel to improve the uniformity of the feed; the second chamber 405 can be configured as a double-layer ion screen 5 to enhance the interception effect; the third chamber 406 can be configured as a replaceable dust box to facilitate cleaning and maintenance. This design can improve the overall processing efficiency of the system.

[0053] In this embodiment, combined with Figure 3-Figure 7 As shown, the ion screen 5 includes a support frame 503 , a conductive mesh 501 disposed on the support frame 503 , and a storage platform 502 located at the bottom of the support frame 503 .

[0054] Specifically, the storage platform 502 divides the ion screen 5 into a plurality of areas; the conductive net 501 is connected to the electrostatic generating rod 3 via a wire to enhance the strength of the electrostatic force field.

[0055] In a specific example, the support frame 503 is made of high-strength engineering plastics with good insulation and durability. The conductive mesh 501 can be made of 316L stainless steel wire mesh, and the mesh size can be adjusted within the range of 10-100 μm. The storage table 502 adopts a multi-zone design to increase the interception area and improve the processing capacity of the system. This structural design can not only improve the interception efficiency, but also facilitate cleaning and maintenance.

[0056] In addition, the present embodiment also includes a control system for controlling the start and stop of the negative pressure generator 403 and the working state of the electrostatic generating rod 3. The control system adopts a PLC programmable controller and is equipped with a 7-inch touch screen display interface. In a specific example, the system can realize more than 10 working mode presets and can automatically adjust parameters according to the characteristics of different charged particles 407. This intelligent control significantly improves the adaptability and operational convenience of the system.

[0057] In this embodiment, combined with Figure 2 and Figure 8 As shown, the static electricity generating rod 3 includes an insulating rod 301, an interface arranged at one end of the insulating rod 301, and the electrode 303 arranged on the surface of the insulating rod 301; the interface is connected to the splitter 2 for receiving high voltage electricity.

[0058] The interface includes a first interface 302 arranged at one end of the insulating rod 301 and a second interface 401 arranged at the other end of the insulating rod 301; the first interface 302 is connected to the splitter 2 for receiving high voltage electricity; the second interface 401 is used to seal and fix the insulating rod 301.

[0059] Preferably, the insulating rod 301 is made of epoxy resin material, which has excellent insulation performance and mechanical strength; the interface is electrically connected to the splitter 2 for receiving high voltage electricity; the electrodes 303 are evenly distributed on the surface of the insulating rod 301 in a spiral shape for forming a uniform electrostatic force field.

[0060] Preferably, the outer wrapping material of the static electricity generating rod 3 is made of insulating material, and specifically PEEK (polyetheretherketone), PTFE (polytetrafluoroethylene), PP (polypropylene), PE (polyethylene), etc. can be selected. The electrode 303 is made of corrosion-resistant metal material, preferably titanium material. The first interface 302 of the static electricity generating rod 3 is made of insulating material to ensure operational safety.

[0061] In a specific example, the length of the insulating rod 301 can be selected within the range of 300-500 mm, and the diameter is 20-30 mm. The electrode 303 is made of chrome-plated stainless steel, and the spiral pitch is 10-15 mm. This structural design improves the uniformity and stability of the electrostatic force field. The interface adopts a standardized design, which is easy to install and replace, and improves the maintenance efficiency of the system. It is known to those skilled in the art that the specific size parameters of the electrostatic generating rod 3 can be adjusted according to actual application requirements, and also include other embodiments besides this embodiment.

[0062] Preferably, the surface of the electrode 303 is specially treated to have anti-corrosion and wear-resistant properties. In a specific example, the surface of the electrode 303 is plasma sprayed to form a 0.2-0.3 mm thick protective layer, which significantly improves the service life of the electrode 303. In addition, the spiral structure of the electrode 303 not only increases the discharge area, but also increases the coverage of the electrostatic force field, thereby enhancing the interception effect of the charged particles 407.

[0063] The structural design of the electrostatic generating rod 3 provides reliable insulation protection through the insulating rod 301, ensures stable power input through the interface, and generates a uniform electrostatic force field through the spiral electrode 303, which provides an important guarantee for the efficient operation of the entire electrostatic interception system. At the same time, its standardized and modular design features also improve the system's maintenance convenience and the interchangeability of parts.

[0064] In addition, this embodiment also includes a control system for controlling the start and stop of the negative pressure generator 403 and the working state of the static generating rod 3. The control system can use a standard industrial communication protocol, support TCP / IP protocol or PROFINET / PROFIBUS-DP protocol, and ensure the reliability and compatibility of system communication.

[0065] In one embodiment, in combination Figure 1 , Figure 2 as well as Fig. 9As shown, the control system includes a processor 601, a memory 602, a control bus 603, a communication device 604 and a display terminal 605; the processor 601 and the memory 602 are connected to the communication device 604 through the control bus 603, and the communication device 604 is connected to the display terminal 605. The processor 601, for example, adopts a 32-bit industrial-grade chip with a main frequency of up to 1 GHz; the memory 602, for example, includes 128MB RAM and 256MB Flash storage space. In a specific example, the control system can realize functions such as data acquisition, parameter adjustment, fault diagnosis, and supports remote monitoring and data export, which can improve the maintainability and management efficiency of the system.

[0066] Preferably, the voltage range of the high voltage provided by the electrostatic generator 1 is between 0-50kV, and the current range is between 0-2.5mA. In a specific example, the electrostatic generator 1 can adopt high-frequency inversion technology, which can achieve stepless regulation within the range of 0-50kV, and the current control accuracy reaches 0.1mA. According to experimental data, when processing positively charged particles, it is recommended that the voltage be set in the range of 20-30kV; when processing negatively charged particles, it is recommended that the voltage be set in the range of 30-40kV. This parameter setting can optimize the interception efficiency. It is known to those skilled in the art that the specific values ​​of voltage and current can be adjusted according to the characteristics of the charged particles 407 to be processed, and also include other embodiments besides this embodiment.

[0067] In addition, if Figure 10-11 As shown, this embodiment also proposes an electrostatic interception method, using the electrostatic interception system described above, specifically comprising the following steps:

[0068] S1, start the negative pressure generator 403 to form a negative pressure airflow in the negative pressure system 4;

[0069] S2, start the electrostatic generator 1, and provide high voltage electricity to the electrostatic generating rod 3 through the shunt 2 to form an electrostatic force field; and

[0070] S3. Under the combined action of the negative pressure airflow and the electrostatic force field, the charged particles 407 in the negative pressure system 4 are intercepted by the ion screen 5 .

[0071] The method in this embodiment forms a dual interception mechanism of "directional guidance + electrostatic adsorption" through the synergistic effect of negative pressure airflow and electrostatic force field. In a specific example, when the airflow speed is controlled within the range of 2-3m / s, the best interception effect can be obtained. This method can not only improve the interception efficiency, but also reduce energy consumption.

[0072] In step S3, the interception process of the charged particles 407 by the ion sieve 5 includes: the charged particles 407 to be processed enter the first chamber 404 of the negative pressure system 4 under the action of the negative pressure airflow; the charged particles 407 are intercepted by the ion sieve 5 in the second chamber 405 and transported to the third chamber 406 for collection.

[0073] In a specific example, the feed rate of the first chamber 404 can be controlled at 1-5 kg / h, the residence time of the second chamber 405 can be adjusted within the range of 3-5 seconds, and the dust collection capacity of the third chamber 406 can reach 5 kg. This classification treatment method can not only improve the interception efficiency, but also extend the maintenance cycle of the equipment.

[0074] Preferably, the particle size of the charged particles 407 is less than 50 μm. Those skilled in the art will appreciate that the particle size range of the charged particles 407 that can be processed by the system can be adjusted according to actual application requirements, and also includes other embodiments besides this embodiment.

[0075] The electrostatic interception method of this embodiment can increase the recovery rate to more than 95%, especially for micro-particles within 50 μm (ie, the charged particles 407 mentioned above). At the same time, the electrostatic interception system of this embodiment has a reasonable structure, is easy to install, and is easy to clean and maintain.

[0076] In this embodiment, first, the electrostatic generator 1 provides 0-50kV high voltage electricity to the electrostatic generating rod 3 through the splitter 2, forming a strong electrostatic force field on the surface of the electrostatic generating rod 3. At the same time, the negative pressure generator 403 is started, and a directional airflow is formed in the three chambers of the negative pressure system 4 through the pipeline 402. The charged particles 407 to be treated enter the first chamber 404 under the action of the negative pressure airflow and maintain directional motion. When the charged particles 407 enter the second chamber 405, they are affected by the electrostatic force field generated by the electrostatic generating rod 3. Under the influence of the Coulomb force, the motion trajectory of the charged particles 407 is deflected and moves toward the ion screen 5. The electrostatic force field formed by the conductive mesh 501 on the ion screen 5 and the electrostatic generating rod 3 further enhances the adsorption of the charged particles 407, so that the charged particles 407 are trapped on the surface of the ion screen 5. A small amount of particles that are not trapped continue to move to the third chamber 406 under the action of the negative pressure airflow, and are finally collected in the third chamber 406. During the whole process, the control system automatically adjusts the electrostatic field strength and negative pressure airflow speed by real-time monitoring of system operating parameters to ensure that the system is always in the best working state. This dual action mechanism of electrostatic field and negative pressure airflow significantly improves the system's interception efficiency for charged particles of different particle sizes, providing efficient and stable technical support for electrostatic particle treatment in industrial production.

[0077] In summary, the electrostatic interception system and method proposed in the present invention have the following advantages:

[0078] The synergistic effect of negative pressure airflow and electrostatic force field improves the interception efficiency of charged particles. The negative pressure system provides a directional flow channel for charged particles, and the coordinated use of electrostatic force field and ion screen enhances the interception ability of charged particles and achieves efficient interception.

[0079] The working stability of the system is improved through the partitioned ion screen and the negative pressure system with multi-chamber structure. The introduction of the control system realizes the precise control of the interception process, and the working parameters can be adjusted according to actual needs, further improving the applicability and reliability of the system.

[0080] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An electrostatic interception system, characterized in that: It includes an electrostatic generator, a splitter, an electrostatic generating rod, a negative pressure system, an ion screen and a negative pressure generator; The electrostatic generator provides high voltage electricity to the electrostatic generating rod through the splitter, so that the electrodes on the surface of the electrostatic generating rod form an electrostatic force field; the negative pressure generator is connected to the negative pressure system, and is used to form a negative pressure airflow in the negative pressure system; the negative pressure system is used to provide a flow channel for charged particles under the action of the negative pressure airflow; the ion screen is arranged in the negative pressure system and is arranged opposite to the electrostatic generating rod, and is used to intercept charged particles under the action of the electrostatic force field.

2. The electrostatic interception system according to claim 1, characterized in that: The ion screen includes a support frame, a conductive mesh arranged on the support frame, and a storage platform located at the bottom of the support frame; The storage platform screens the ions into a plurality of areas; the conductive net is connected to the electrostatic generating rod via a conductor to enhance the strength of the electrostatic force field.

3. The electrostatic interception system according to claim 1, characterized in that: It also includes a pipeline; the negative pressure system is connected to the negative pressure generator through the pipeline.

4. The electrostatic interception system according to claim 3, characterized in that: The negative pressure system comprises a first chamber, a second chamber and a third chamber which are connected in sequence; The ion sieve is arranged in the second chamber; one end of the pipe is connected to the third chamber, and the other end is connected to the negative pressure generator to form a negative pressure airflow; the first chamber is used to receive charged particles to be processed, the second chamber is used to intercept the charged particles under the action of the electrostatic force field using the ion sieve, and the third chamber is used to collect the intercepted charged particles.

5. The electrostatic interception system according to claim 1, characterized in that: It also includes a control system for controlling the start and stop of the negative pressure generator and the working state of the static electricity generating rod.

6. The electrostatic interception system according to claim 5, characterized in that: The control system includes a processor, a memory, a control bus, a communication device and a display terminal; the processor and the memory are connected to the communication device via the control bus, and the communication device is connected to the display terminal.

7. The electrostatic interception system according to claim 1, characterized in that The static electricity generating rod comprises an insulating rod, an interface arranged at one end of the insulating rod and the electrode arranged on the surface of the insulating rod; the interface is connected to the shunt for receiving high voltage electricity.

8. An electrostatic interception method, using the electrostatic interception system according to any one of claims 1 to 7, characterized in that: The details include: Start the negative pressure generator to form negative pressure airflow in the negative pressure system; Start the electrostatic generator and provide high voltage electricity to the electrostatic generating rod through the splitter to form an electrostatic force field; Under the combined effect of the negative pressure airflow and the electrostatic force field, the charged particles in the negative pressure system are intercepted by an ion screen.

9. The electrostatic interception method according to claim 8, characterized in that: The process of using an ion sieve to intercept charged particles in the negative pressure system specifically includes: the charged particles to be processed enter the first chamber of the negative pressure system under the action of the negative pressure airflow; the charged particles are intercepted by the ion sieve in the second chamber and transported to the third chamber for collection.

10. The electrostatic interception method according to claim 8, characterized in that: The particle size of the charged particles is less than 50 μm.

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