Novel pipeline type powder material electrostatic measurement equipment

Abstract

The utility model relates to the technical field of real-time online monitoring of static electricity of powder, and discloses novel equipment for static electricity measurement of a pipeline type powder material. The novel pipeline type powder material electrostatic measurement equipment comprises a monitor body, the right side of the monitor body is provided with a cover plate fixedly connected and communicated with the monitor body, the left side of the cover plate is provided with an insulating plate fixedly connected with the cover plate, the left side of the insulating plate is fixedly connected with an inclined plate monitoring electrode located in the monitor body, and the left side of the inclined plate monitoring electrode is fixedly connected with an inclined plate. The inclined plate monitoring electrode is insulated from the cover plate, an electrode screw extending to the right side of the cover plate is arranged in the inclined plate monitoring electrode, and the device has the advantages that the measurement of the electric charge quantity Q is more accurate, real-time continuous measurement can be achieved, and the device is not restrained by the installation direction; the problems that when a traditional Faraday cup is used for conducting online static electricity measurement in the production environment, measurement of the electric charge quantity Q is not accurate, real-time continuous measurement cannot be achieved, and the traditional Faraday cup can only be vertically installed are solved.

Description

Technical Field

[0001] This utility model relates to the field of real-time online monitoring technology of powder electrostatics, specifically a new device for measuring the electrostatics of powder materials via a pipeline. Background Technology

[0002] Traditional pipeline-type powder electrostatic measurement uses a Faraday cylinder for sampling and measurement (see...). Figure 2 The material is sampled by opening and closing the sliding base plate of the cylinder within a specified time. The charge Q (uC) is obtained within the time between the start and end of sampling (e.g., within 2 seconds). The charge density ρ0 = Q / M (uc / Kg) of the material is calculated by multiplying the bulk density ρ1 of the powder material and the volume V of the Faraday cylinder to obtain the mass M = ρ1*V.

[0003] Traditional Faraday cylinder-based charge density measurements have the following problems:

[0004] 1. Inaccurate charge measurement Q: Sampling at fixed intervals within the pipeline is highly susceptible to the influence of material transport load, resulting in large errors in the measured charge Q and easily leading to oversampling or undersampling. Oversampling can also cause secondary static electricity due to continued collisions and friction of materials within the Faraday cage.

[0005] 2. Inaccurate mass measurement (M): Sampling at fixed intervals within the pipeline is highly susceptible to the influence of material transport load, resulting in a large error in the measured mass (M = ρ1 * V), which can easily lead to under-sampling. Similarly, switching between different material grades with varying bulk densities (ρ1) also significantly impacts the mass calculation.

[0006] 3. Cannot be measured continuously in real time: Because it is a sampling measurement, it can only be measured after the sampling is completed. The measured physical quantity, charge density ρ0=Q / M(uc / Kg), is a discontinuous physical quantity, which cannot be used for real-time feedback automatic control.

[0007] 4. Vertical installation only: Since Faraday cups can only be sampled by gravity falling naturally, they can only be installed vertically.

[0008] Therefore, traditional Faraday cylinder measurements are more suitable for precise measurements in the laboratory and not for online electrostatic measurements in the production environment. Hence, a new electrode plate electrostatic measurement device is proposed to solve the above problems. Utility Model Content

[0009] (a) Technical problems to be solved

[0010] To address the shortcomings of existing technologies, this utility model provides a new pipeline-type device for electrostatic measurement of powder materials. It has advantages such as more accurate measurement of charge Q, real-time continuous measurement capability, and no restrictions on installation direction. It solves the problems of inaccurate charge Q measurement, inability to perform real-time continuous measurement, and the limitation of vertical installation in traditional Faraday cylinders used for online electrostatic measurement in production environments.

[0011] (II) Technical Solution

[0012] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A new device for electrostatic measurement of pipeline powder materials includes a monitor body. A cover plate is fixedly connected and communicated with the right side of the monitor body. An insulating plate is fixedly connected to the left side of the cover plate. An inclined plate monitoring electrode located inside the monitor body is fixedly connected to the left side of the insulating plate. The inclined plate monitoring electrode is insulated from the cover plate. An electrode screw extending to the right side of the cover plate is provided inside the inclined plate monitoring electrode. The inclined plate monitoring electrode and the electrode screw are electrically connected. The electrode screw is insulated from the cover plate.

[0013] The beneficial effects of this utility model are:

[0014] This new pipeline-type electrostatic measurement device for powder materials only detects the charge Q carried by the material near the inclined plate monitoring electrode, without measuring the mass M of the material. This simplifies the measurement structure and enables real-time continuous measurement of physical quantities. Moreover, it has no requirements for the installation method and can be installed horizontally or vertically. The measured signal is converted into an industrial standard signal and transmitted to a PLC or DCS after passing through several parts, including charge measurement, signal conversion, signal filtering, and signal output. It has the advantages of more accurate charge Q measurement, real-time continuous measurement, and no restriction on installation direction.

[0015] Based on the above technical solution, the present invention can be further improved as follows.

[0016] Furthermore, a sealing gasket is provided between the monitor body and the cover plate, and a sealing screw is threadedly connected to the right side of the cover plate, passing through the sealing gasket and threadedly connected to the right side of the monitor body.

[0017] The advantage of adopting the above-mentioned further solution is that the gap between the monitor body and the cover plate is sealed by the sealing gasket, preventing material leakage.

[0018] Furthermore, the inclined plate monitoring electrode has an internal threaded connection to a fixing bolt extending to the right side of the monitor body. The outer side of the fixing bolt is fitted with a first insulating bushing that contacts both the inclined plate monitoring electrode and the insulating plate. The right end of the fixing bolt is threaded with a fixing nut that fits tightly against the right side of the cover plate.

[0019] The beneficial effect of adopting the above-mentioned further solution is that the inclined plate monitoring electrode is fixed to the left side of the cover plate by fixing bolts and fixing nuts, and a first insulating bushing is sleeved on the outside of the fixing bolts, which is in contact with both the inclined plate monitoring electrode and the insulating plate, thereby preventing the inclined plate monitoring electrode from conducting through the fixing bolts to the cover plate, thus making the inclined plate monitoring electrode and the cover plate insulated.

[0020] Furthermore, a second insulating bushing is fitted on the outer side of the electrode screw, which is in contact with both the cover plate and the insulating plate, and a conductive nut is threaded to the left end of the electrode screw, which fits tightly against the right arm of the inner cavity of the inclined plate monitoring electrode.

[0021] The beneficial effect of adopting the above-mentioned further solution is that the electrode screw and conductive nut are in contact with the inclined plate monitoring electrode. By sleeved a second insulating bushing on the outside of the conductive nut, which is in contact with both the cover plate and the insulating plate, the electrode screw is prevented from being in contact with the cover plate. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of a traditional Faraday cylinder structure;

[0024] Figure 3 This is a schematic diagram of the measurement signal conversion output of this utility model.

[0025] In the diagram: 1. Monitor body; 2. Cover plate; 3. Insulating plate; 4. Inclined plate monitoring electrode; 5. Electrode screw; 6. Sealing gasket; 7. Sealing screw; 8. Fixing bolt; 9. First insulating bushing; 10. Fixing nut; 11. Second insulating bushing; 12. Conductive nut. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In the embodiments, by Figure 1-3This invention discloses a novel device for electrostatic measurement of powder materials via a pipeline. The device includes a monitor body 1, a cover plate 2 fixedly connected and communicating with the right side of the monitor body 1, an insulating plate 3 fixedly connected to the left side of the cover plate 2, an inclined plate monitoring electrode 4 located inside the monitor body 1 fixedly connected to the left side of the insulating plate 3, the inclined plate monitoring electrode 4 being insulated from the cover plate 2, and an electrode screw 5 extending to the right side of the cover plate 2 being provided inside the inclined plate monitoring electrode 4, the inclined plate monitoring electrode 4 being electrically connected to the electrode screw 5, and the electrode screw 5 being insulated from the cover plate 2.

[0028] A sealing gasket 6 is provided between the monitor body 1 and the cover plate 2. A sealing screw 7 is threaded through the cover plate 2 and the sealing gasket 6 and threaded to the right side of the monitor body 1.

[0029] The inclined plate monitoring electrode 4 has an internal threaded connection to a fixing bolt 8 extending to the right side of the monitor body 1. The outer side of the fixing bolt 8 is fitted with a first insulating bushing 9 that contacts both the inclined plate monitoring electrode 4 and the insulating plate 3. The right end of the fixing bolt 8 is threaded with a fixing nut 10 that fits tightly against the right side of the cover plate 2.

[0030] The outer side of the electrode screw 5 is fitted with a second insulating bushing 11 that contacts both the cover plate 2 and the insulating plate 3. The left end of the electrode screw 5 is threaded with a conductive nut 12 that fits tightly against the right arm of the inner cavity of the inclined plate monitoring electrode 4.

[0031] The conductive nut 12 transmits the charge obtained by the inclined plate monitoring electrode 4 to the charge transmitter. The charge transmitter converts the measured signal into an industrial standard signal through several parts, including charge measurement, signal conversion, signal filtering, and signal output, and then transmits it to a PLC or DCS. This device does not measure charge density, but only the amount of charge Quc collected by the inclined plate monitoring electrode 4. It does not measure mass, so the device can accurately measure the amount of charge carried by the material at a certain moment. Since the device does not have a process of receiving material in a barrel, there is no problem of over- or under-measurement, and it can perform continuous charge measurement. Moreover, the inclined plate monitoring electrode 4 is not restricted by the installation direction and can be installed vertically or horizontally.

[0032] Working principle:

[0033] Implementation steps for the first innovation point:

[0034] Step 1: Connect electrode screw 5 to charge transmitter electrically. During the material conveying process inside monitor body 1, inclined plate monitoring electrode 4 contacts the material to obtain the material charge.

[0035] Step 2: The charge obtained by the inclined plate monitoring electrode 4 is transmitted to the charge transmitter through the electrode screw 5;

[0036] Step 3: The charge transmitter converts the measured signal into an industrial standard signal through several parts, including charge measurement, signal conversion, signal filtering, and signal output, and then transmits it to the PLC or DCS.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A new device for electrostatic measurement of powder materials in pipes, comprising a monitor body (1), characterized in that: The right side of the monitor body (1) is provided with a cover plate (2) fixedly connected therewith and in communication, the left side of the cover plate (2) is provided with an insulating plate (3) fixedly connected therewith, the left side of the insulating plate (3) is fixedly connected with an inclined plate monitoring electrode (4) located in the monitor body (1), the inclined plate monitoring electrode (4) is insulated from the cover plate (2), the inside of the inclined plate monitoring electrode (4) is provided with an electrode screw (5) extending to the right side of the cover plate (2), the inclined plate monitoring electrode (4) is in electrical conduction with the electrode screw (5), and the electrode screw (5) is insulated from the cover plate (2).

2. A novel apparatus for electrostatically measuring a powder material in a pipe according to claim 1, characterized in that: The monitor body (1) and the cover plate (2) are provided with a sealing gasket (6), and the right side of the cover plate (2) is threadedly connected with a sealing screw (7) penetrating through the cover plate (2) and the sealing gasket (6) and threadedly connected with the right side of the monitor body (1).

3. A novel apparatus for electrostatically measuring a powder material in a pipe according to claim 1, characterized in that: The inside of the inclined plate monitoring electrode (4) is threadedly connected with a fixing bolt (8) extending to the right side of the monitor body (1), the outside of the fixing bolt (8) is sleeved with a first insulating bushing (9) in contact with the inclined plate monitoring electrode (4) and the insulating plate (3), and the right end of the fixing bolt (8) is threadedly connected with a fixing nut (10) tightly fitted with the right side of the cover plate (2).

4. A novel apparatus for electrostatically measuring a powder material in a pipe according to claim 1, characterized in that: The outside of the electrode screw (5) is sleeved with a second insulating bushing (11) in contact with the cover plate (2) and the insulating plate (3), and the left end of the electrode screw (5) is threadedly connected with a conductive nut (12) tightly fitted with the right arm of the inner cavity of the inclined plate monitoring electrode (4). The outside of the electrode screw (5) is sleeved with a second insulating bushing (11) in contact with the cover plate (2) and the insulating plate (3), and the left end of the electrode screw (5) is threadedly connected with a conductive nut (12) tightly fitted with the right arm of the inner cavity of the inclined plate monitoring electrode (4).

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