Phosphoric acid electrostatic demisting corona equipment

Abstract

The invention relates to the technical field of environmental protection, in particular to phosphoric acid electrostatic demisting corona equipment which comprises a treatment bin, an output pipe is fixedly connected to the top of the treatment bin, an input pipe is fixedly connected to the bottom of the treatment bin, a filtering assembly is arranged at the top of the input pipe, and a sedimentation tank is fixedly connected to the bottom side of the treatment bin. A cleaning assembly is arranged on the surface of the treatment bin, a barrier plate is fixedly connected to the middle of an inner cavity of the treatment bin, a plurality of uniformly distributed precipitation electrodes are fixedly connected to the top of the barrier plate, and a corona electrode is fixedly connected to the top of the inner cavity of the treatment bin. Large-particle impurities are prevented from interfering with subsequent electrostatic treatment, shutdown maintenance of equipment caused by faults of the filtering assembly is avoided, the maintenance frequency and cost are reduced, impurities attached to the inner wall of the sedimentation tank are scraped away in time through the cleaning assembly, and unsmooth waste liquid discharge caused by accumulation of the impurities in the sedimentation tank is avoided.

Description

Technical Field

[0001] This invention relates to the field of environmental protection technology, specifically to a phosphoric acid electrostatic demisting and corona treatment device. Background Technology

[0002] In industrial production, especially in phosphoric acid-related processes, exhaust gases containing a large number of droplets, fine particles, and harmful impurities are generated. If these exhaust gases are emitted directly without effective treatment, they will cause serious pollution to the atmospheric environment. Electrostatic demisting technology is widely used in phosphoric acid exhaust gas treatment due to its advantages such as high purification efficiency and stable operation.

[0003] Existing phosphoric acid electrostatic demisters typically use a treatment chamber as the core carrier, with corona electrodes and precipitation electrodes inside to form a high-voltage electrostatic field. They use the principle of electrostatic adsorption to remove impurities from the exhaust gas. They are also equipped with input and output pipes to introduce and discharge the exhaust gas, respectively. Some equipment also includes a sedimentation tank to collect waste liquid and impurities generated during the treatment process, in order to reduce secondary pollution.

[0004] However, existing phosphoric acid electrostatic precipitator equipment lacks an efficient exhaust gas pretreatment mechanism. Larger particle sizes in the exhaust gas directly enter the electrostatic treatment area, which not only easily interferes with the electrostatic adsorption effect between the corona electrode and the precipitation electrode, but may also adhere to the electrode surface, affecting electrode conductivity and the overall processing efficiency of the equipment. Therefore, we propose a phosphoric acid electrostatic precipitator with corona treatment. Summary of the Invention

[0005] The purpose of this invention is to provide a phosphoric acid electrostatic defogging and corona treatment device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A phosphoric acid electrostatic demisting and corona treatment device includes a treatment chamber, an output pipe fixedly connected to the top of the treatment chamber, an input pipe fixedly connected to the bottom of the treatment chamber, a filter assembly disposed on the top of the input pipe, a sedimentation tank fixedly connected to the bottom side of the treatment chamber, a cleaning assembly disposed on the surface of the treatment chamber, a baffle plate fixedly connected to the middle of the inner cavity of the treatment chamber, a plurality of evenly distributed sedimentation electrodes fixedly connected to the top of the baffle plate, a corona electrode fixedly connected to the top of the inner cavity of the treatment chamber, the filter assembly including an electric push rod fixedly connected to the top of the input pipe, a brush plate fixedly connected to the telescopic end of the electric push rod, a filter plate fixedly connected inside the input pipe, and the brush plate abutting against one side of the filter plate.

[0007] Preferably, two brush plates are slidably connected inside the brush plate one, and two sliders are fixedly connected to the surface of the brush plate two. Multiple evenly distributed grooves are opened inside the brush plate one, and the sliders are slidably connected inside the grooves.

[0008] Preferably, a spring is fixedly connected to the side of the second brush plate near the inside of the first brush plate, and the end of the spring away from the second brush plate is fixedly connected to the inside of the first brush plate.

[0009] Preferably, a collection plate is slidably connected to the inner side of the bottom of the input pipe. The collection plate is located at the bottom of the filter plate. Two guide rods are fixedly connected to the bottom side of the input pipe. The guide rods pass through the collection plate. An installation plate is fixedly connected to the bottom end of the two guide rods. A second spring is sleeved on the surface of the guide rod. The second spring is located on the side of the installation plate facing the collection plate. A push rod is fixedly connected to the bottom side of the brush plate. The push rod is located at the top of the collection plate.

[0010] Preferably, the cleaning assembly includes a motor mounted on the surface of the treatment chamber, a mounting frame fixedly connected inside the sedimentation tank, a rotating shaft rotatably connected to the middle of the mounting frame, bevel gears fixedly connected to the top of the rotating shaft and the motor drive end, the two bevel gears meshing together, and a scraper fixedly connected to the bottom of the rotating shaft, the scraper abutting against the inside of the sedimentation tank.

[0011] Preferably, a water supply pipe is fixedly connected to the top of the inner cavity of the treatment chamber, and multiple evenly distributed nozzles are fixedly connected to the surface of the water supply pipe.

[0012] Preferably, a discharge pipe is fixedly connected to the side of the sedimentation tank away from the treatment chamber, and a solenoid valve is provided on the surface of the discharge pipe.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. This phosphoric acid electrostatic demisting and corona treatment device intercepts larger impurities in the exhaust gas through a filter assembly, preventing large particles from interfering with subsequent electrostatic treatment. The electric push rod can drive brush plate one and brush plate two to thoroughly clean the impurities attached to the surface of the filter plate, effectively preventing filter plate blockage, ensuring smooth air intake through the input pipe, avoiding equipment downtime for maintenance due to filter assembly failure, and reducing maintenance frequency and cost.

[0014] 2. This phosphoric acid electrostatic demisting and corona treatment device uses a motor in the cleaning component to drive a rotating shaft through bevel gear transmission. The scraper at the bottom of the shaft rotates close to the inner wall of the sedimentation tank, which can promptly scrape off impurities attached to the inner wall of the sedimentation tank, preventing impurities from accumulating in the sedimentation tank and causing poor waste liquid discharge. This ensures that the sedimentation tank can continuously and stably collect the waste liquid and impurities after rinsing, and extends the overall service life of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the processing chamber structure in this invention; Figure 3 This is a schematic diagram of the output tube structure in this invention; Figure 4 This is a schematic diagram of the brush plate structure in this invention; Figure 5 This is a schematic diagram of the collecting plate structure in this invention; Figure 6 This is a schematic diagram of the scraper structure in this invention.

[0016] In the diagram: 1. Processing chamber; 2. Output pipe; 3. Input pipe; 4. Filter assembly; 401. Electric push rod; 402. Filter plate; 403. Brush plate one; 404. Collection plate; 405. Mounting plate; 406. Brush plate two; 407. Slider; 408. Spring one; 409. Guide rod; 410. Spring two; 5. Solenoid valve; 6. Water supply pipe; 7. Nozzle; 8. Corona electrode; 9. Sedimentation electrode; 10. Baffle plate; 11. Sedimentation tank; 12. Cleaning assembly; 1201. Mounting frame; 1202. Motor; 1203. Bevel gear; 1204. Rotating shaft; 1205. Scraper; 13. Discharge pipe; 14. Push rod. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0019] Please see Figure 1 - Figure 6 As shown, the present invention provides a technical solution: An electrostatic demisting and corona treatment device for phosphoric acid includes a treatment chamber 1, which provides space for treating phosphoric acid tail gas. An output pipe 2 is fixedly connected to the top of the treatment chamber 1, and an input pipe 3 is fixedly connected to the bottom of the treatment chamber 1. The phosphoric acid tail gas to be treated enters the interior of the treatment chamber 1 through the input pipe 3, and the treated phosphoric acid tail gas is discharged through the output pipe 2. A sedimentation tank 11 is fixedly connected to the bottom side of the treatment chamber 1 for collecting waste liquid. A baffle plate 10 is fixedly connected to the middle of the inner cavity of the treatment chamber 1. The baffle plate 10 reduces the flow velocity of the tail gas, thereby ensuring sufficient contact between the tail gas and the corona electrode 8 and the sedimentation electrode 9. Multiple evenly distributed sedimentation electrodes 9 are fixedly connected to the top of the baffle plate 10, and the corona electrode 8 is fixedly connected to the top of the inner cavity of the treatment chamber 1. Electrode 8 and precipitation electrode 9 can form a high-voltage electrostatic field to adsorb impurities in the exhaust gas. A filter assembly 4 is provided at the top of the input pipe 3. The filter assembly 4 includes an electric push rod 401 fixedly connected to the top of the input pipe 3. The telescopic end of the electric push rod 401 can drive the first brush plate 403 and the second brush plate 406 to move. The telescopic end of the electric push rod 401 is fixedly connected to the first brush plate 403. A filter plate 402 is fixedly connected inside the input pipe 3. The first brush plate 403 abuts against one side of the filter plate 402. The filter plate 402 can filter larger impurities in the exhaust gas to facilitate subsequent exhaust gas treatment. The first brush plate 403 and the second brush plate 406 can clean the impurities attached to the surface of the filter plate 402 by moving along the filter plate 402, preventing the accumulation of impurities on the surface of the filter plate 402 from affecting the filtration effect.

[0020] In this embodiment, two brush plates 406 are slidably connected inside the brush plate 403. The brush plates 406 can slide inside the brush plate 403 to adapt the brush plate 403 to the shape of the filter plate 402, thereby enhancing the cleaning effect. Two sliders 407 are fixedly connected to the surface of the brush plates 406. Multiple evenly distributed grooves are opened inside the brush plate 403. The sliders 407 are slidably connected inside the grooves. The sliding of the sliders 407 inside the grooves can restrict the movement of the brush plates 406 and prevent the brush plates 406 from falling out of the brush plate 403.

[0021] In this embodiment, a spring 408 is fixedly connected to the side of the second brush plate 406 near the inside of the first brush plate 403. The end of the spring 408 away from the second brush plate 406 is fixedly connected to the inside of the first brush plate 403. The spring 408 pushes the second brush plate 406 to move to the outside of the first brush plate 403.

[0022] In this embodiment, a collection plate 404 is slidably connected to the inner bottom of the input pipe 3. The collection plate 404 is located at the bottom of the filter plate 402 and is used to collect impurities attached to the surface of the filter plate 402. Two guide rods 409 are fixedly connected to the bottom of the input pipe 3. The guide rods 409 pass through the collection plate 404 and are used to guide the collection plate 404 to move accurately. An installation plate 405 is fixedly connected to the bottom end of the two guide rods 409. A second spring 410 is sleeved on the surface of the guide rods 409. The second spring 410 is located on the side of the installation plate 405 facing the collection plate 404. The second spring 410 can push the collection plate 404 to fit tightly against the inner bottom of the input pipe 3. A push rod 14 is fixedly connected to the bottom of the brush plate 403 and is located on the top of the collection plate 404. The push rod 14 can move with the brush plate 403 and push the collection plate 404 out of the input pipe 3, thereby facilitating the cleaning of impurities.

[0023] In this embodiment, a cleaning component 12 is provided on the surface of the processing chamber 1. The cleaning component 12 includes a motor 1202 installed on the surface of the processing chamber 1. The driving end of the motor 1202 can drive one of the bevel gears 1203 to rotate. A mounting frame 1201 is fixedly connected inside the sedimentation tank 11. The mounting frame 1201 serves to install a rotating shaft 1204. The rotating shaft 1204 is rotatably connected to the middle of the mounting frame 1201. The top end of the rotating shaft 1204 and the driving end of the motor 1202 are both fixedly connected to bevel gears 1203. Two bevel gears 1203 are meshed together. The meshing of the two bevel gears 1203 can cause one bevel gear 1203 to drive the other bevel gear 1203 to rotate, and the other bevel gear 1203 can drive the rotating shaft 1204 to rotate. A scraper 1205 is fixedly connected to the bottom end of the rotating shaft 1204. The scraper 1205 abuts against the inner side of the sedimentation tank 11. The rotating shaft 1204 can drive the scraper 1205 to rotate. During the rotation of the scraper 1205, impurities attached to the inner wall of the sedimentation tank 11 can be cleaned.

[0024] In this embodiment, a water supply pipe 6 is fixedly connected to the top of the inner cavity of the treatment chamber 1. Multiple evenly distributed nozzles 7 are fixedly connected to the surface of the water supply pipe 6. Water can flow through the water supply pipe 6 to each nozzle 7 and be sprayed onto the corona electrode 8 and the precipitation electrode 9 through each nozzle 7, thereby cleaning the corona electrode 8 and the precipitation electrode 9.

[0025] In this embodiment, a discharge pipe 13 is fixedly connected to the side of the sedimentation tank 11 away from the treatment chamber 1. A solenoid valve 5 is provided on the surface of the discharge pipe 13. Waste liquid impurities in the sedimentation tank 11 can be discharged through the discharge pipe 13. The solenoid valve 5 can control the opening and closing of the discharge pipe 13.

[0026] In this embodiment, a phosphoric acid electrostatic demisting and corona treatment device is used such that the phosphoric acid tail gas to be treated is introduced into the treatment chamber 1 through the input pipe 3. The filter plate 402 in the input pipe 3 first filters the larger impurities in the tail gas. The impurities adhere to the surface of the filter plate 402. When the filter plate 402 needs to be cleaned, the electric push rod 401 is activated. The extension end of the electric push rod 401 drives the brush plate 1 403 and brush plate 2 406 to move along the surface of the filter plate 402 to clean the impurities attached to the surface of the filter plate 402. The cleaned impurities fall into the collection plate 404 below. When the brush plate 1 403 moves, the push rod 14 at its bottom pushes the collection plate 404 downward along the guide rod 409, thereby cleaning the impurities on the surface of the collection plate 404. After the impurities are cleaned, the rebound force of the spring 2 410 drives the collection plate 404 to reset.

[0027] After the pre-treated exhaust gas enters the treatment chamber 1, the flow velocity is reduced by the baffle plate 10, so that the exhaust gas can fully contact the corona electrode 8 at the top of the inner cavity of the treatment chamber 1 and the precipitation electrode 9 at the top of the baffle plate 10. The corona electrode 8 and the precipitation electrode 9 form a high-voltage electrostatic field, which ionizes and adsorbs impurities such as mist droplets and tiny particles in the exhaust gas onto the surface of the precipitation electrode 9, thereby achieving exhaust gas demisting and purification.

[0028] When impurities accumulate to a certain extent on the surface of the sedimentation electrode 9, water is supplied to each nozzle 7 through the water pipe 6. The nozzles 7 spray water onto the corona electrode 8 and the sedimentation electrode 9 to wash away the impurities on the electrode surfaces. The waste liquid and impurities generated during washing flow into the sedimentation tank 11 at the bottom. At the same time, the motor 1202 on the surface of the treatment chamber 1 is started. The drive end of the motor 1202 drives the rotating shaft 1204 inside the sedimentation tank 11 to rotate through two meshing bevel gears 1203. The rotating shaft 1204 drives the scraper 1205 to rotate close to the inner wall of the sedimentation tank 11, cleaning the impurities attached to the inner wall of the sedimentation tank 11 and preventing the accumulation of impurities.

[0029] The purified exhaust gas is discharged through the output pipe 2 at the top of the treatment chamber 1. When the waste liquid and impurities collected in the sedimentation tank 11 reach a certain amount, the solenoid valve 5 on the surface of the discharge pipe 13 is opened, so that the waste liquid and impurities are discharged through the discharge pipe 13, thus completing one demisting treatment process for phosphoric acid exhaust gas.

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

Claims

1. A phosphoric acid electrostatic demisting and corona treatment device, comprising a treatment chamber (1), characterized in that: The processing chamber (1) is fixedly connected to the top of an output pipe (2), the processing chamber (1) is fixedly connected to the bottom of an input pipe (3), a filter assembly (4) is provided on the top of the input pipe (3), a sedimentation tank (11) is fixedly connected to the bottom side of the processing chamber (1), a cleaning assembly (12) is provided on the surface of the processing chamber (1), a baffle plate (10) is fixedly connected to the middle of the inner cavity of the processing chamber (1), a plurality of uniformly distributed sedimentation electrodes (9) are fixedly connected to the top of the baffle plate (10), a corona electrode (8) is fixedly connected to the top of the inner cavity of the processing chamber (1), the filter assembly (4) includes an electric push rod (401) fixedly connected to the top of the input pipe (3), a brush plate (403) is fixedly connected to the telescopic end of the electric push rod (401), a filter plate (402) is fixedly connected inside the input pipe (3), and the brush plate (403) abuts against one side of the filter plate (402).

2. The phosphoric acid electrostatic precipitator and corona discharge device according to claim 1, characterized in that: Two brush plates (406) are slidably connected inside the brush plate one (403). Two sliders (407) are fixedly connected to the surface of the brush plate two (406). Multiple evenly distributed grooves are opened inside the brush plate one (403), and the sliders (407) are slidably connected inside the grooves.

3. The phosphoric acid electrostatic demisting and corona treatment device according to claim 2, characterized in that: A spring (408) is fixedly connected to the side of the brush plate 2 (406) near the inside of the brush plate 1 (403), and the end of the spring 1 (408) away from the brush plate 2 (406) is fixedly connected to the inside of the brush plate 1 (403).

4. The phosphoric acid electrostatic demisting and corona treatment device according to claim 1, characterized in that: A collection plate (404) is slidably connected to the bottom inner side of the input pipe (3). The collection plate (404) is set at the bottom of the filter plate (402). Two guide rods (409) are fixedly connected to the bottom side of the input pipe (3). The guide rods (409) pass through the collection plate (404). An installation plate (405) is fixedly connected to the bottom end of the two guide rods (409). A second spring (410) is sleeved on the surface of the guide rod (409). The second spring (410) is set on the side of the installation plate (405) facing the collection plate (404). A push rod (14) is fixedly connected to the bottom side of the brush plate (403). The push rod (14) is set at the top of the collection plate (404).

5. The phosphoric acid electrostatic demisting and corona treatment device according to claim 1, characterized in that: The cleaning assembly (12) includes a motor (1202) installed on the surface of the processing chamber (1). A mounting frame (1201) is fixedly connected inside the sedimentation tank (11). A rotating shaft (1204) is rotatably connected in the middle of the mounting frame (1201). A bevel gear (1203) is fixedly connected to both the top end of the rotating shaft (1204) and the drive end of the motor (1202). The two bevel gears (1203) mesh with each other. A scraper (1205) is fixedly connected to the bottom end of the rotating shaft (1204). The scraper (1205) abuts against the inside of the sedimentation tank (11).

6. The phosphoric acid electrostatic demisting and corona treatment device according to claim 1, characterized in that: The top of the inner cavity of the treatment chamber (1) is fixedly connected to a water supply pipe (6), and a plurality of evenly distributed nozzles (7) are fixedly connected to the surface of the water supply pipe (6).

7. The phosphoric acid electrostatic precipitator and corona discharge device according to claim 1, characterized in that: The sedimentation tank (11) is fixedly connected to a discharge pipe (13) on the side away from the treatment chamber (1), and a solenoid valve (5) is provided on the surface of the discharge pipe (13).

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