Intelligent safety pressure relief linkage device for lead electric furnace exhaust pipeline

Abstract

This invention discloses an intelligent safety pressure relief linkage device for lead-acid furnace exhaust gas pipelines, comprising an exhaust gas main pipe and a support platform. This invention relates to the field of pressure relief technology for lead-acid furnace exhaust gas pipelines. This intelligent safety pressure relief linkage device for lead-acid furnace exhaust gas pipelines, through the setting of adaptive pressure relief components, elbow anti-clogging mechanisms, and dust removal mechanisms, enables multiple sets of pressure relief branch pipes and pressure relief mechanisms to open pressure relief channels in stages according to the main pipe pressure when the device triggers pressure relief operation. It adaptively performs low-pressure single-path pressure relief and high-pressure multi-path synchronous exhaust. The dust removal mechanism drives the first scraper to continuously rotate and remove dust from the inner wall of the pressure relief branch pipe. The elbow anti-clogging mechanism eliminates the problem of easy clogging at elbow nodes, and the second scraper removes lead dust adhering to the walls of the transfer pipe and inlet end pipe. This achieves multi-section pipeline linkage automatic dust removal during pressure relief, maintaining pipeline diameter stability and preventing pressure relief failure due to lead dust blockage.

Description

Technical Field

[0001] This invention relates to the field of pressure relief technology for lead-fired electric furnace exhaust gas pipelines, specifically to an intelligent safety pressure relief linkage device for lead-fired electric furnace exhaust gas pipelines. Background Technology

[0002] Lead-containing electric furnace smelting produces high-temperature waste gas containing lead dust, which is collected and transported to the main pipeline for purification. Fluctuations in smelting conditions can easily cause a sudden increase in pressure inside the pipeline. Overpressure can lead to pipeline damage and leakage of toxic fumes, posing safety and environmental hazards.

[0003] Secondly, the main pressure relief flow is large and the dust is difficult to collect. A single point of failure will result in the loss of protection for the entire pipeline. Because existing technology usually uses branch pressure relief to release the local overpressure flue gas of a single electric furnace without interfering with the production of other furnaces.

[0004] Currently, conventional branch pressure relief systems are only configured with one start and one standby. Although they can relieve pressure, they lack an adaptive pressure relief mechanism and cannot adjust the pressure relief flow rate according to the real-time pressure levels of the pipeline. In addition, the equipment lacks a dust removal mechanism, which causes dust adhering to the inside of the branch pipe to reduce the pressure relief flow rate.

[0005] To overcome the above problems, an intelligent safety pressure relief linkage device for lead-acid furnace exhaust gas pipeline is provided to solve the existing problems. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides an intelligent safety pressure relief linkage device for lead-acid furnace exhaust gas pipelines, which solves the problems of inconvenient adaptive pressure relief and inconvenient ash removal inside the branch pipes, leading to a decrease in emission capacity.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution: an intelligent safety pressure relief linkage device for lead-acid furnace exhaust gas pipeline, comprising an exhaust gas main pipe and a support platform, wherein the support platform is installed on the surface of the exhaust gas main pipe, an adaptive pressure relief component is provided on the top of the exhaust gas main pipe, an elbow anti-clogging mechanism for use in conjunction with the adaptive pressure relief component is provided on the front side of the top of the support platform, and a dust removal mechanism is provided on the rear side of the top of the support platform.

[0008] Preferably, the adaptive pressure relief assembly includes a first rotary pipe, and several first rotary pipes are provided. Each of the several first rotary pipes is connected to a pressure relief port on the surface of the main exhaust pipe through a rotary joint. The top of the first rotary pipe is connected to a pressure relief branch pipe through a rotary joint. The rear side of the pressure relief branch pipe is connected to a transfer pipe. Several cyclone separators are fixedly connected to the top of the support platform through a support. The front side of each cyclone separator is connected to an inlet end. The inlet end and the transfer pipe on the same side are connected to a second rotary pipe through a rotary joint. The top of each cyclone separator is connected to an exhaust pipe, and a pressure relief mechanism is provided at the top of the exhaust pipe.

[0009] Preferably, the pressure relief mechanism includes a conical cover, which is connected to the top of the discharge pipe. A sealing ring is fixedly connected inside the discharge pipe. A receiving sleeve is fixedly connected inside the conical cover via a bracket. A sealing handle adapted to the sealing ring is slidably connected inside the receiving sleeve. A first spring is fixedly connected between the sealing handle and the receiving sleeve.

[0010] Preferably, the elbow anti-clogging mechanism includes a collection box, and several collection boxes are provided. All collection boxes are fixedly connected to the top of the support platform by a bracket. The top of the pressure relief branch pipe is connected to a jacking pipe, and one end of the jacking pipe extends into the interior of the collection box. A first motor is fixedly connected to the rear side of the jacking pipe and the top of the second rotary pipe by a bracket. The output shaft of the first motor is equipped with a screw shaft through a coupling, and one end of the screw shaft extends into the interior of the jacking pipe. A second motor is installed on the front side of the collection box. The output shaft of the second motor is fixedly connected to a limiting shaft through a coupling. One end of the limiting shaft extends into the interior of the collection box. A limiting slide cylinder is slidably connected to the surface of the limiting shaft. A sealing block adapted to the top pipe is fixedly connected to the rear side of the limiting slide cylinder. A material distribution plate is installed on the rear side of the sealing block.

[0011] Preferably, the dust removal mechanism includes a first gear, which is fixedly connected to the surface of the first rotary tube. A third motor is fixedly connected to the top of the support platform. The output shaft of the third motor is fixedly connected to a reciprocating screw via a coupling. One end of the reciprocating screw is rotatably connected to the top of the support platform. A threaded fitting is slidably provided on the surface of the reciprocating screw. A toothed plate that meshes with the first gear is fixedly connected to the front side of the threaded fitting. A plurality of first dust scraping plates are fixedly connected at equal intervals around the inner wall of the first rotary tube.

[0012] Preferably, the surfaces of the spiral shaft and the second rotary tube are both fixedly connected with meshing second gears, and the inner wall of the second rotary tube is fixedly connected with a plurality of second scraping plates.

[0013] Preferably, a slide is fixedly connected to the top of the support platform, a sliding sleeve is slidably disposed on the surface of the slide, and the top of the sliding sleeve is fixedly connected to the surface of the threaded assembly.

[0014] Preferably, the inside of the collection box is slidably connected to a limiting frame through a guide groove, and the inside of the limiting frame is rotatably connected to the surface of the sealing block. Limiting sleeves are fixedly connected to both sides of the front side of the inner cavity of the collection box. A sliding column is slidably connected inside the limiting sleeve, and the rear side of the sliding column is fixedly connected to the front side of the limiting frame. A second spring is fixedly connected between the sliding column and the limiting sleeve.

[0015] Preferably, a collection frame is placed inside the collection box.

[0016] Preferably, the collection box is provided with an inspection door on the front side.

[0017] Beneficial effects This invention provides an intelligent safety pressure relief linkage device for lead-acid furnace exhaust gas pipelines. Compared with existing technologies, it has the following advantages: (1) The intelligent safety pressure relief linkage device for the lead-fired furnace exhaust gas pipeline is equipped with an adaptive pressure relief component, an elbow anti-blocking mechanism and a dust removal mechanism. When the device triggers the pressure relief operation, multiple pressure relief branches and pressure relief mechanisms can also open the pressure relief channels in stages according to the main pressure. It can adaptively release pressure in a single low-pressure channel and release pressure in a multi-channel synchronous high-pressure channel. The dust removal mechanism can drive the first scraper to continuously rotate and remove dust from the inner wall of the pressure relief branch. The operation of the elbow anti-blocking mechanism can eliminate the problem of easy blockage at the elbow node. The second scraper can scrape off the lead dust attached to the transfer pipe and the inlet end pipe wall. It can realize automatic dust removal of multiple pipelines in linkage during the pressure relief process, maintain the stability of the pipeline diameter, and avoid the failure of pressure relief due to lead dust blockage.

[0018] (2) The intelligent safety pressure relief linkage device for the lead-acid furnace exhaust gas pipeline, by reserving a cavity between the sealing block and the spiral shaft, enables the spiral shaft to transmit and compress the accumulated dust in the cavity, forming a material seal inside the top pipe and blocking the leakage of normal flue gas.

[0019] (3) The intelligent safety pressure relief linkage device for the lead-acid furnace exhaust gas pipeline, by setting a material distribution plate on the surface of the sealing block and setting a collection frame inside the collection box, enables the ejected dust material to be broken and crushed and recycled into the inside of the collection frame. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the external structure of the present invention; Figure 2 This is a schematic diagram of the external structure of the present invention from another perspective; Figure 3 This is a schematic diagram of the adaptive pressure relief component structure of the present invention; Figure 4 This is a schematic diagram of the pressure relief mechanism structure of the present invention; Figure 5 This is a schematic diagram of the internal structure of the pressure relief branch pipe of the present invention; Figure 6 For the present invention Figure 5 A magnified view of a section at point A in the middle; Figure 7 This is a schematic diagram of the anti-clogging mechanism structure for elbows of the present invention; Figure 8 This is a schematic diagram of the material distribution plate structure of the present invention; Figure 9 This is a schematic diagram of the dust removal mechanism structure of the present invention.

[0021] In the diagram: 1. Main exhaust pipe; 2. Support platform; 3. Adaptive pressure relief assembly; 301. First rotary pipe; 302. Pressure relief branch pipe; 303. Transfer pipe; 304. Cyclone separator; 305. Inlet end; 306. Second rotary pipe; 307. Discharge pipe; 308. Pressure relief mechanism; 3081. Conical hood; 3082. Sealing ring; 3083. Receiving sleeve; 3084. Sealing handle; 3085. First spring; 4. Elbow anti-clogging mechanism; 401. Collection box; 402. Jacking pipe; 403. First motor 404. Spiral shaft; 405. Second motor; 406. Limiting shaft; 407. Limiting slide cylinder; 408. Sealing block; 409. Material distribution plate; 5. Dust removal mechanism; 501. First gear; 502. Third motor; 503. Reciprocating screw; 504. Threaded assembly; 505. Toothed plate; 506. First dust scraper; 6. Second gear; 7. Second dust scraper; 8. Slide frame; 9. Sliding sleeve; 10. Limiting frame; 11. Limiting sleeve; 12. Sliding column; 13. Second spring; 14. Collection frame; 15. Inspection door. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0023] Please see Figure 1-9 The present invention provides a technical solution: an intelligent safety pressure relief linkage device for lead-acid furnace exhaust gas pipeline, including an exhaust gas main pipe 1 and a support platform 2, wherein the support platform 2 is installed on the surface of the exhaust gas main pipe 1.

[0024] In a preferred embodiment, in order to achieve adaptive graded pressure relief of the exhaust gas main pipe 1 according to the flue gas pressure inside the pipe, an adaptive pressure relief component 3 is provided at the top of the exhaust gas main pipe 1. The adaptive pressure relief component 3 includes a first rotary pipe 301, and several first rotary pipes 301 are provided. All of the several first rotary pipes 301 are connected to the pressure relief port on the surface of the exhaust gas main pipe 1 through rotary joints. The top of the first rotary pipes 301 is connected to a pressure relief branch pipe 302 through rotary joints. The rear side of the pressure relief branch pipe 302 is connected to a transfer pipe 303. Several cyclone separators 304 are fixedly connected to the top of the support platform 2 through a support. The front side of the cyclone separator 304 is connected to an inlet end 305. The inlet end 305 and the transfer pipe 303 on the same side are connected to a second rotary pipe 306 through a rotary joint. The top of the cyclone separator 304 is connected to an exhaust pipe 307. A pressure relief mechanism 308 is provided at the top of the exhaust pipe 307. The pressure relief mechanism 308 includes a conical cover 3081, which is connected to the top of the discharge pipe 307. A sealing ring 3082 is fixedly connected inside the discharge pipe 307. A receiving sleeve 3083 is fixedly connected inside the conical cover 3081 through a bracket. A sealing handle 3084 adapted to the sealing ring 3082 is slidably connected inside the receiving sleeve 3083. A first spring 3085 is fixedly connected between the sealing handle 3084 and the receiving sleeve 3083. As explained in detail, the elastic force of the first spring 3085 in the multiple pressure relief mechanisms 308 is set in a gradient increasing manner, corresponding to the formation of a progressively increasing pressure relief opening threshold.

[0025] In a preferred embodiment, to prevent lead dust accumulation and blockage at the elbow of the pressure relief branch pipe 302 and to ensure long-term unobstructed flow of the pipeline, an elbow anti-blockage mechanism 4, which is used in conjunction with the adaptive pressure relief component 3, is provided on the front side of the top of the support platform 2. The elbow anti-blockage mechanism 4 includes a collection box 401, and several collection boxes 401 are provided. All collection boxes 401 are fixedly connected to the top of the support platform 2 by a bracket. The top of the pressure relief branch pipe 302 is connected to a jacking pipe 402, and one end of the jacking pipe 402 extends into the interior of the collection box 401. The rear side of the jacking pipe 402 and the top of the second rotary pipe 306 are fixedly connected to a first motor 403 by a bracket. The output shaft of the first motor 403 is connected by a coupling. The device is equipped with a spiral shaft 404, one end of which extends into the interior of the jacking pipe 402. A second motor 405 is installed on the front side of the collection box 401. The output shaft of the second motor 405 is fixedly connected to a limiting shaft 406 via a coupling. One end of the limiting shaft 406 extends into the interior of the collection box 401. A limiting cylinder 407 is slidably connected to the surface of the limiting shaft 406. A sealing block 408 adapted to the jacking pipe 402 is fixedly connected to the rear side of the limiting cylinder 407. A material distribution plate 409 is installed on the rear side of the sealing block 408. As explained in detail: a positioning groove is provided inside the limiting cylinder 407, and a positioning slider is provided at the end of the limiting shaft 406 extending into the limiting cylinder 407. The inside of the collection box 401 is slidably connected to the limit frame 10 through a guide groove, and the inside of the limit frame 10 is rotatably connected to the surface of the sealing block 408. Limit sleeves 11 are fixedly connected to both sides of the front side of the inner cavity of the collection box 401. A sliding column 12 is slidably connected inside the limit sleeve 11, and the rear side of the sliding column 12 is fixedly connected to the front side of the limit frame 10. A second spring 13 is fixedly connected between the sliding column 12 and the limit sleeve 11. A collection frame 14 is placed inside the collection box 401. An inspection door 15 is provided on the front side of the collection box 401. As explained in detail: the sealing pre-tightening force provided by the second spring 13 is higher than that of the first spring 3085, ensuring that the jacking pipe 402 remains sealed and closed under normal working conditions. The surfaces of the spiral shaft 404 and the second rotating tube 306 are fixedly connected with meshing second gears 6, and the inner wall of the second rotating tube 306 is fixedly connected with several second scraping plates 7.

[0026] In a preferred embodiment, in order to automatically remove lead dust adhering to the inner wall of the pressure relief branch pipe 302 and prevent the pressure relief channel from shrinking and failing, a dust removal mechanism 5 is provided on the rear side of the top of the support platform 2. The dust removal mechanism 5 includes a first gear 501, which is fixedly connected to the surface of the first rotary pipe 301. A third motor 502 is fixedly connected to the top of the support platform 2. The output shaft of the third motor 502 is fixedly connected to a reciprocating screw 503 through a coupling. One end of the reciprocating screw 503 is rotatably connected to the top of the support platform 2. A threaded fitting 504 is slidably provided on the surface of the reciprocating screw 503. A toothed plate 505 that meshes with the first gear 501 is fixedly connected to the front side of the threaded fitting 504. Several first dust scraping plates 506 are fixedly connected at equal intervals around the inner wall of the first rotary pipe 301. The top of the support platform 2 is fixedly connected to the slide 8, and the surface of the slide 8 is slidably provided with a sliding sleeve 9, and the top of the sliding sleeve 9 is fixedly connected to the surface of the threaded kit 504.

[0027] When in use, when the flue gas pressure inside the exhaust gas main pipe 1 is too high, the gas passes through the first rotary pipe 301, the pressure relief branch pipe 302, the transfer pipe 303, the second rotary pipe 306, the inlet end 305 and the cyclone separator 304 in sequence, and finally enters the exhaust pipe 307. When the flue gas pressure inside the exhaust pipe 307 increases step by step and reaches the spring sealing threshold preset by the corresponding pressure relief mechanism 308, the first spring 3085 with different elastic stiffness will be pushed open in sequence, driving the sealing handle 3084 to retract upward, so that it is disengaged from the sealing ring 3082, thereby relieving the pressure of the exhaust gas main pipe 1. During the pressure relief process, the dust particles in the flue gas are collected by the cyclone separator 304, and the flue gas after the particles are separated is transported from the top of the conical hood 3081 to the next process. When the flue gas is depressurized, the first motor 403 is started simultaneously. The first motor 403 drives the spiral shaft 404 to rotate. The rotating spiral shaft 404 continuously transports the dust entering from the bottom to the cavity between the sealing block 408 and the spiral shaft 404. With the accumulation and compression of the dust, a material seal is formed on the top pipe 402. Secondly, during the dust accumulation and compression process, the sealing block 408 will be opened by moving. The sealing block 408 will be retracted towards the limiting shaft 406 under force. Then, the second motor 405 is started. The second motor 405 drives the sealing block 408 to rotate through the limiting shaft 406 and the limiting slide 407. The sealing block 408 drives the material distribution plate 409 to rotate. The rotation of the material distribution plate 409 will break up the dust column that has entered the collection box 401 and let it fall into the collection frame 14 for collection. During the rotation of the first motor 403 driving the spiral shaft 404, the spiral shaft 404 synchronously drives two second gears 6 to mesh, causing the second gears 6 to drive several second scraper blades 7 through the second rotary tube 306 to scrape dust from the inner cavity of the transfer tube 303 and the inlet end 305. The scraped dust flows into the cyclone separator 304 along with the flue gas and is separated inside. Secondly, when the flue gas is depressurized, the third motor 502 is started simultaneously. The third motor 502 drives the reciprocating screw 503 to rotate. The corresponding threaded assembly 504 carries the toothed plate 505 to move back and forth on the surface of the reciprocating screw 503. The toothed plate 505 moves synchronously and repeatedly meshes with several first gears 501, causing the first gears 501 to drive the first scraper plate 506 to rotate repeatedly through the first rotary tube 301, thereby removing ash from the inner wall of the depressurization branch pipe 302.

Claims

1. A smart safety pressure relief linkage device for a lead-acid furnace exhaust gas pipeline, comprising an exhaust gas main pipe (1) and a support platform (2), wherein the support platform (2) is installed on the surface of the exhaust gas main pipe (1), characterized in that: An adaptive pressure relief assembly (3) is provided on the top of the exhaust gas main pipe (1), an elbow anti-clogging mechanism (4) is provided on the front side of the top of the support platform (2) in conjunction with the adaptive pressure relief assembly (3), and a dust removal mechanism (5) is provided on the rear side of the top of the support platform (2).

2. The intelligent safety pressure relief linkage device for lead-acid furnace exhaust gas pipeline according to claim 1, characterized in that: The adaptive pressure relief assembly (3) includes a first rotary pipe (301), which is provided in several parts. Each of the first rotary pipes (301) is connected to the pressure relief port on the surface of the exhaust gas main pipe (1) through a rotary joint. The top of the first rotary pipe (301) is connected to a pressure relief branch pipe (302) through a rotary joint. The rear side of the pressure relief branch pipe (302) is connected to a transfer pipe (303). The top of the support platform (2) is fixedly connected to several cyclone separators (304) through a support. The front side of the cyclone separator (304) is connected to an inlet end (305). The inlet end (305) and the transfer pipe (303) on the same side are connected to a second rotary pipe (306) through a rotary joint. The top of the cyclone separator (304) is connected to an exhaust pipe (307). The top of the exhaust pipe (307) is provided with a pressure relief mechanism (308).

3. The intelligent safety pressure relief linkage device for lead-acid furnace exhaust gas pipeline according to claim 2, characterized in that: The pressure relief mechanism (308) includes a conical cover (3081), which is connected to the top of the discharge pipe (307). A sealing ring (3082) is fixedly connected inside the discharge pipe (307). A storage sleeve (3083) is fixedly connected inside the conical cover (3081) via a bracket. A sealing handle (3084) adapted to the sealing ring (3082) is slidably connected inside the storage sleeve (3083). A first spring (3085) is fixedly connected between the sealing handle (3084) and the storage sleeve (3083).

4. The intelligent safety pressure relief linkage device for lead-acid furnace exhaust gas pipeline according to claim 2, characterized in that: The elbow anti-blocking mechanism (4) includes a collection box (401), and there are several collection boxes (401). All collection boxes (401) are fixedly connected to the top of the support platform (2) by a bracket. The top of the pressure relief branch pipe (302) is connected to the jacking pipe (402), and one end of the jacking pipe (402) extends into the inside of the collection box (401). The rear side of the jacking pipe (402) and the top of the second rotary pipe (306) are fixedly connected to the first motor (403) by a bracket. The output shaft of the first motor (403) is equipped with a spiral shaft (404) through a coupling, and one end of the spiral shaft (404) extends into the inside of the jacking pipe (402). A second motor (405) is installed on the front side of the collection box (401). The output shaft of the second motor (405) is fixedly connected to a limiting shaft (406) via a coupling. One end of the limiting shaft (406) extends into the interior of the collection box (401). A limiting cylinder (407) is slidably connected to the surface of the limiting shaft (406). A sealing block (408) adapted to the top pipe (402) is fixedly connected to the rear side of the limiting cylinder (407). A material distribution plate (409) is installed on the rear side of the sealing block (408).

5. The intelligent safety pressure relief linkage device for lead-acid furnace exhaust gas pipeline according to claim 2, characterized in that: The dust removal mechanism (5) includes a first gear (501), which is fixedly connected to the surface of the first rotary tube (301). A third motor (502) is fixedly connected to the top of the support platform (2). The output shaft of the third motor (502) is fixedly connected to a reciprocating screw (503) via a coupling. One end of the reciprocating screw (503) is rotatably connected to the top of the support platform (2). A threaded assembly (504) is slidably provided on the surface of the reciprocating screw (503). A toothed plate (505) that meshes with the first gear (501) is fixedly connected to the front side of the threaded assembly (504). Several first dust scraping plates (506) are fixedly connected at equal intervals around the inner wall of the first rotary tube (301).

6. The intelligent safety pressure relief linkage device for lead-acid furnace exhaust gas pipeline according to claim 4, characterized in that: The surfaces of the spiral shaft (404) and the second rotary tube (306) are both fixedly connected with meshing second gears (6), and the inner wall of the second rotary tube (306) is fixedly connected with several second scraper plates (7).

7. The intelligent safety pressure relief linkage device for lead-acid furnace exhaust gas pipeline according to claim 5, characterized in that: The top of the support platform (2) is fixedly connected to a slide (8), and a sliding sleeve (9) is slidably provided on the surface of the slide (8), and the top of the sliding sleeve (9) is fixedly connected to the surface of the threaded assembly (504).

8. The intelligent safety pressure relief linkage device for lead-acid furnace exhaust gas pipeline according to claim 4, characterized in that: The inside of the collection box (401) is slidably connected to a limiting frame (10) through a guide groove, and the inside of the limiting frame (10) is rotatably connected to the surface of the sealing block (408). Limiting sleeves (11) are fixedly connected to both sides of the front side of the inner cavity of the collection box (401). A sliding column (12) is slidably connected inside the limiting sleeve (11), and the rear side of the sliding column (12) is fixedly connected to the front side of the limiting frame (10). A second spring (13) is fixedly connected between the sliding column (12) and the limiting sleeve (11).

9. The intelligent safety pressure relief linkage device for lead-acid furnace exhaust gas pipeline according to claim 4, characterized in that: The collection box (401) contains a collection frame (14).

10. The intelligent safety pressure relief linkage device for lead-acid furnace exhaust gas pipeline according to claim 4, characterized in that: The collection box (401) is provided with an inspection door (15) on the front side.

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