Improved structure of electrostatic dust collector

Abstract

The utility model discloses an improved structure of an electrostatic dust collector, a cathode wire is coated with a protective sleeve, the root of a barbed wire is arranged in the protective sleeve, and barbs on the barbed wire are arranged outside the protective sleeve. The protective sleeve comprises a left protective sleeve and a right protective sleeve which are made of an insulating material; the left protective sleeve and the right protective sleeve are respectively buckled on two sides of the cathode wire; a dilution structure for blowing away concentrated dust is arranged on the air inlet pipe; the diluting structure comprises a dust concentration sensor, a gas mixing part, an electromagnetic valve, a gas source and a controller; the controller is in signal connection with the dust concentration sensor and the electromagnetic valve. The beneficial effects of the utility model are that through the arrangement of the protective sleeve, dust is prevented from corroding the roots of the barbed wires; through the arrangement of the mixing part, the situation that dust cannot be discharged after being subjected to corona and left on a polar plate due to the fact that the dust concentration in the dust remover is too high is avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of dust removal equipment, and specifically relates to an improved structure of an electrostatic precipitator. Background Technology

[0002] Electrostatic precipitators are widely used in steel plants. They are an indispensable front-end environmental protection dust removal device in the sintering vertical furnace roasting process of raw material plants. Given the increasingly serious environmental situation, electrostatic precipitators are generally designed with a dual-chamber, four-field structure, which has a relatively high dust removal efficiency and stable operation. The operating principle of an electrostatic precipitator is mainly based on cathode discharge, which ionizes and charges the air, which then combines with the dust, causing the dust to become charged. Finally, the charged dust moves to the anode grounding end, forming a dust layer. The dust is then shaken off by a rapping system and slid smoothly into the ash hopper by gravity, thereby achieving the purpose of dust collection.

[0003] The main components of a dry electrostatic precipitator include cathode wires, anode plates, a rapping system, an insulating hanging system, a housing, a dust hopper, a dust discharge system, and a transformer control system. Among these, the cathode wires and plates are the core components of the dust collector, consisting of multiple sets of plates and wires. Generally, the cathode wires are RS barbed wires or four-barbed wires, and the plates are made of C480 cold-rolled steel plates with a plate-to-wire spacing of 225mm. After prolonged use, the barbs of the cathode wires corrode, affecting the discharge charge and dust collection efficiency, causing the electric field to malfunction.

[0004] Currently, the cathode wires of electrostatic precipitators are generally RS barbed wires, which have high discharge efficiency, high concentration density, and are easy to charge and attract dust. However, the cathode wires correspond to the anode plates. The sintered anode plates are generally about 14m long and are integrated plates, but the cathode wires are installed in layers with a length of 3m-4m. They are extremely prone to thermal deformation and bending, which affects the plate spacing and makes replacement difficult. If a single electrode wire breaks and becomes stuck, it will cause a short circuit in the entire electric field. In addition, even if there is no short circuit, bending of the electrode wire will lead to a decrease in voltage and failure to boost the voltage. Therefore, how to prevent corrosion damage at the root of the barbed wires on the cathode wire has become a technical problem to be solved.

[0005] Among existing patents, application number 201710454361.7, entitled "Electrostatic Precipitator," discloses multiple alternating anode sections and multiple cathode sections, which extend along the airflow direction; a front baffle is arranged at intervals on the anode sections on the air inlet side, and a rear baffle is arranged at intervals on the anode sections on the air outlet side; the rear baffle is staggered from the front baffle, so that the multiple anode sections form alternating primary and secondary dust collection zones; wherein the anode sections are mesh-like, and the cathode wires in this application are not protected, making them prone to barbed corrosion.

[0006] Another application, numbered 201910730706.6, discloses an electrostatic precipitator, which includes: an inner support unit comprising a support body, a first support frame, a second support frame, and a third support frame; the first, second, and third support frames are fixed sequentially from bottom to top on the support body; and a cathode rapping unit comprising a rapping motor, a vertical rapping shaft, a transmission gear, a horizontal rapping shaft, and rapping hammers; the rapping motor is installed at the top of the support body; the rapping motor drives the vertical rapping shaft to rotate, the vertical rapping shaft drives the horizontal rapping shaft to rotate via the transmission gear, and the horizontal rapping shaft drives multiple rapping hammers mounted thereon to rotate. However, the cathode wire in this application lacks protection, making it prone to corrosion at the root of the barbed wire. Utility Model Content

[0007] The purpose of this invention is to provide an improved structure for an electrostatic precipitator, specifically addressing how to protect the roots of the barbs on the cathode wire to prevent corrosion and ensure proper operation of the electric field.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] An electrostatic precipitator includes a dust collection chamber, a dust hopper, and an air inlet pipe connected to the chamber. The chamber contains several cathode wires, and the cathode wires are equipped with several barbed wires.

[0010] An improved structure for an electrostatic precipitator is provided, wherein the cathode wire is covered with a protective sleeve, the root of the barbed wire is located inside the protective sleeve, and the barbs of the barbed wire are located outside the protective sleeve.

[0011] Furthermore, the protective sleeve includes a left protective sleeve and a right protective sleeve made of insulating material, which are respectively fastened to both sides of the cathode wire.

[0012] Furthermore, the cathode wire is fixed to the housing via a small cathode frame.

[0013] Furthermore, the air intake pipe is equipped with a dilution structure to disperse dense dust.

[0014] Furthermore, the dilution structure includes a dust concentration sensor installed on the air intake pipe, a mixing section with one end connected to the air intake pipe, a solenoid valve connected to the mixing section, an air source fixedly connected to the solenoid valve, and a controller; the controller is connected to the dust concentration sensor and the solenoid valve respectively; the other end of the mixing section is connected to the housing.

[0015] Furthermore, the diameter of the mixing section is 2-4 times the diameter of the intake pipe, and the length of the mixing section is 6 times the diameter of the intake pipe.

[0016] Furthermore, the solenoid valve is connected to the mixing section via a connecting pipe, which is perpendicular to the mixing section.

[0017] Compared with the prior art, the significant beneficial effects achieved by this utility model are as follows:

[0018] The protective sleeves are fastened to both sides of the cathode wire to protect the root of the barbed wire, preventing dust from corroding the root of the barbed wire, causing the barbed wire to break or bend, and thus preventing the electric field from operating normally.

[0019] When the dust concentration in the air inlet pipe is high due to the mixing section, the solenoid valve is opened to introduce air and disperse the dust. This prevents the dust concentration in the dust collector from being too high, which would prevent the dust from being corona-electrolyzed and remain on the electrode plates, thus allowing the dust to be discharged. Attached Figure Description

[0020] Appendix Figure 1 This is a schematic diagram of the structure of this application;

[0021] Appendix Figure 2 for Figure 1 Enlarged view of point A;

[0022] Appendix Figure 3 This is a cross-sectional view of the cathode wire and the protective sleeve;

[0023] Appendix Figure 4 This is a schematic diagram of the dilution structure;

[0024] In the attached diagram,

[0025] 1-Box body, 2-Ash hopper, 3-Mixing section, 4-Gas source, 5-Inlet pipe, 6-Round and square connector;

[0026] 11-Left protective sleeve, 12-Barbed wire, 13-Cathode wire, 14-Right protective sleeve;

[0027] 41-Solenoid valve, 51-Dust concentration sensor. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0029] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0030] Example 1

[0031] like Figure 1 , 2 As shown in Figure 3,

[0032] The electrostatic precipitator includes a dust collection chamber 1, a dust hopper 2, and an air inlet pipe 5 connected to the chamber 1. The chamber 1 contains several cathode wires 13, and each cathode wire 13 has several barbed wires 12.

[0033] An improved structure for an electrostatic precipitator includes a protective sleeve covering the cathode wire 13, the root of a barbed wire 12 being disposed inside the protective sleeve, and the barbs on the barbed wire 12 being disposed outside the protective sleeve.

[0034] Detailed structure as follows Figure 3 As shown, the protective sleeve includes a left protective sleeve 11 and a right protective sleeve 14 made of insulating material, which are respectively fastened to both sides of the cathode wire 13. The protective sleeve is preferably made of fiberglass. By adding two channel-shaped fiberglass plates (left protective sleeve 11 and right protective sleeve 14) that fasten together, the root of the cathode wire 13 is fixed inside, while the burr wire 12 is exposed outside the fiberglass plates. Because the fiberglass plates are strong and not easily deformed, the cathode wire 13 is fixed and the distance from the anode remains unchanged, resulting in a normal and stable voltage. Furthermore, even if the cathode wire 13 corrodes and breaks, it will not cause a short circuit.

[0035] The cathode wire 13 is fixed to the housing 1 through the cathode frame.

[0036] Insulating sealant is applied to the joints of the left protective sleeve 11 and the right protective sleeve 14 with the cathode wire 13, making the left protective sleeve 11 and the right protective sleeve 14 more stable; the upper and lower ends of the left protective sleeve 11 and the right protective sleeve 14 are bonded and fixed to the housing 1, making the protective sleeves stable.

[0037] Example 2

[0038] The structure of this embodiment is largely the same as that of Embodiment 1.

[0039] The difference is that,

[0040] During the use of the electrostatic precipitator, it was found that occasionally unclean gas would be discharged from the housing 1. After long-term observation by technicians, it was found that this was caused by occasional clumps of dust in the air inlet pipe 5, which were not completely removed by the electrostatic precipitator in a short time. In order to solve the problem of unclean gas being discharged from the housing occasionally, we adopted the following technical solution.

[0041] like Figure 4 As shown, the air intake pipe 5 is equipped with a dilution structure to disperse clumps of dense dust.

[0042] The dilution structure includes a dust concentration sensor 51 mounted on the air inlet pipe 5, a mixing section 3 connected to the air inlet pipe 5 at one end, a solenoid valve 41 connected to the mixing section 3, an air source 4 fixedly connected to the solenoid valve 41, and a controller. The controller is connected to the dust concentration sensor 51 and the solenoid valve 41 respectively. The other end of the mixing section 3 is connected to the housing 1 via a round-to-square connector 6. The round-to-square connector 6 is provided because the mixing section 3 is a round pipe, while the housing 1 is square. This design ensures that the dust gas passes evenly through the gaps between the electrode plates inside the housing 1, achieving thorough dust removal.

[0043] The solenoid valve 41 is connected to the gas mixing section 3 via a connecting pipe, and the connecting pipe is perpendicular to the gas mixing section 3.

[0044] The dust concentration sensor 51 employs the principle of light absorption technology: when light waves pass through a linear material, they interact with the material. Part of the light wave is absorbed by the medium and converted into heat energy; part is scattered by the medium, deviating from its original propagation direction; and the remaining part continues to propagate through the medium in its original direction. The intensity of the transmitted light conforms to the Lambert-Beer law. Based on the Lambert-Beer law, the light absorption type dust concentration sensor calculates the dust concentration by measuring the incident and emitted light intensities. This method is characterized by accurate measurement even under high dust concentration conditions.

[0045] During operation, a dust concentration threshold is set in the controller. The dust concentration sensor 51 transmits the measured dust concentration of the dust-laden gas to the controller in real time. When the real-time dust concentration sensor exceeds the set threshold, the controller sends a signal to the solenoid valve 41, which opens. The gas in the high-pressure gas source 4 disperses the clumps of dust, and then the controller sends a closing signal to the solenoid valve 41.

[0046] Example 3

[0047] The structure of this embodiment is largely the same as that of embodiment 2.

[0048] The difference is that,

[0049] like Figure 4 As shown, the diameter of the mixing section 3 is 2-4 times the diameter of the air inlet pipe 5. If the diameter of the mixing section 3 is too small, it will not be conducive to the diffusion of dust gas; if it is too large, it will take up space. After exploration, the most reasonable diameter is three times the diameter of the air inlet pipe 5.

[0050] The length of the mixing section 3 is 6 times the diameter of the inlet pipe 5, which allows the dust gas to be sufficiently decelerated, enabling the clumps of dust to be fully dispersed. To ensure that the dust concentration sensor 51 measures an accurate signal, the distance between the dust concentration sensor 51 and the mixing section 3 is not less than the diameter of the inlet pipe 5.

[0051] Currently, the technical solution of this application has undergone pilot testing, which is a small-scale experiment before the product is mass-produced. After the pilot testing was completed, a user survey was conducted on a small scale, and the survey results showed that user satisfaction was high. Now, preparations have begun for the formal production and industrialization of the product (including intellectual property risk warning surveys).

Claims

1. An improved structure for an electrostatic precipitator, comprising a housing (1) for dust removal, a dust hopper (2), and an air inlet pipe (5) communicating with the housing (1), wherein the housing (1) contains a plurality of cathode wires (13), and the cathode wires (13) are provided with a plurality of barbed wires (12), characterized in that: The cathode wire (13) is covered with a protective sleeve, the root of the barb wire (12) is arranged in the protective sleeve, and the barb on the barb wire (12) is arranged outside the protective sleeve.

2. An electrostatic precipitator improvement as defined in claim 1 wherein: The protective sleeve comprises a left protective sleeve (11) and a right protective sleeve (14) made of insulating material, and the left protective sleeve (11) and the right protective sleeve (14) are respectively buckled on both sides of the cathode wire (13).

3. An electrostatic precipitator improvement as defined in claim 2 wherein: The cathode wire (13) is fixed to the box (1) through a cathode small frame.

4. An electrostatic precipitator improvement as defined in claim 3 wherein: The air inlet pipe (5) is provided with a dilution structure for dispersing dense dust.

5. An electrostatic precipitator improvement as defined in claim 4 wherein: The dilution structure comprises a dust concentration sensor (51) mounted on the air inlet pipe (5), a gas mixing part (3) in communication with one end of the air inlet pipe (5), an electromagnetic valve (41) in communication with the gas mixing part (3), an air source (4) in fixed communication with the electromagnetic valve (41), and a controller; the controller is in signal connection with the dust concentration sensor (51) and the electromagnetic valve (41) respectively; the other end of the gas mixing part (3) is in communication with the box (1).

6. An electrostatic precipitator improvement as defined in claim 5 wherein: The diameter of the gas mixing part (3) is 2-4 times the diameter of the air inlet pipe (5), and the length of the gas mixing part (3) is 6 times the diameter of the air inlet pipe (5).

7. An electrostatic precipitator improvement as defined in claim 6 wherein: The electromagnetic valve (41) is in communication with the gas mixing part (3) through a connecting pipe, and the connecting pipe is perpendicular to the gas mixing part (3).

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