A method and apparatus for dust removal in calcium carbide production

Abstract

This invention relates to the field of dust removal technology, and in particular to a dust removal method and apparatus for calcium carbide production. The apparatus includes a dust collection box, with multiple steam generating pipes rotatably connected to the upper inner wall of the dust collection box. A water spraying mechanism is fixedly connected to the inner wall of the dust collection box. A driving mechanism is fixedly connected to one side of the dust collection box, and a transmission mechanism is rotatably connected to the rear side of the dust collection box. Multiple permanent magnet adsorption cylinders are rotatably connected to the lower inner wall of the dust collection box, and a dust scraper is located below each permanent magnet adsorption cylinder. By using the steam generating pipes and water spraying mechanism, when the steam generating pipes transport the high-temperature flue gas generated by the calcium carbide furnace, the rotating steam generating pipes cause the water spraying mechanism to intermittently spray water. The sprayed water cools the high-temperature flue gas inside the steam generating pipes, effectively protecting the magnetic properties of the permanent magnets in the permanent magnet adsorption cylinders, ensuring they operate within the normal temperature range, and extending the service life of the equipment.

Description

Technical Field

[0001] This invention relates to the field of dust removal technology, and in particular to a method and apparatus for dust removal in calcium carbide production. Background Technology

[0002] Dust control during calcium carbide production is a crucial step in protecting the environment, improving working conditions, and ensuring production safety. Calcium carbide is produced by reducing limestone and coke in an electric arc furnace at high temperatures, generating large amounts of smoke, dust, and toxic gases. Therefore, implementing effective dust control measures is essential.

[0003] The prior art publication CN109078435B provides a dust recovery system for a calcium carbide plant and its usage method. In this technology, a dry dust collector and iron removal box can dryly adsorb dust in the gas. The iron shell, magnetized by permanent magnet particles, is magnetic and adsorbs iron-containing particles in the dust. A bag filter cartridge adsorbs the dust. A driving device rotates the iron shell and the bag filter cartridge, achieving uniform adsorption and preventing uneven adsorption, thus improving dust adsorption efficiency. The rotation of the bag filter cartridge facilitates dust removal. A wet dust collector re-filters the dust not completely filtered in the dry dust collector and iron removal box. Water from a water storage tank is introduced into a water curtain plate to form a water curtain, filtering dust in the gas. A waste heat recovery box recovers and utilizes heat from the gas through water heat exchange.

[0004] In existing technologies, permanent magnets are used to adsorb particulate matter in dust. However, when using existing technologies to remove dust from high-temperature flue gas generated by calcium carbide furnaces, it is not convenient to cool down the high-temperature flue gas. The high-temperature flue gas generated by calcium carbide furnaces will cause the permanent magnets to approach or exceed the demagnetization temperature, resulting in a decrease in magnetic field strength, which weakens the adsorption force and affects the effective adsorption of dust.

[0005] In summary, the existing technology lacks a dust removal technology that pre-treats high-temperature flue gas. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of the prior art by proposing a dust removal method and apparatus for calcium carbide production.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a dust removal method and apparatus for calcium carbide production, comprising a dust removal box, wherein multiple steam generating pipes are rotatably connected through the upper inner wall of the dust removal box, a water spraying mechanism is fixedly connected to the inner wall of the dust removal box, a driving mechanism is fixedly connected to one side of the dust removal box, a transmission mechanism is rotatably connected to the rear side of the dust removal box, and multiple permanent magnet adsorption cylinders are rotatably connected to the lower inner wall of the dust removal box, and a dust scraper seat is provided below the permanent magnet adsorption cylinders.

[0008] Preferably, the inner wall of the dust collector is divided into a first dust collector chamber and a second dust collector chamber. An exhaust pipe is fixedly connected to the upper part of the second dust collector chamber. An air baffle is slidably fitted through the inner wall of the exhaust pipe. A tension spring is fixedly connected to the outer end of the air baffle. The other end of the tension spring is fixedly connected to the outer wall of the exhaust pipe. A contact wheel is rotatably connected to the outer end of the air baffle. An air guide pipe is fixedly connected through the inner wall of the dust collector chamber. A valve is fixedly connected through the outer wall of the dust collector chamber. The inner end of the valve is in communication with the inner wall of the second dust collector chamber.

[0009] Preferably, one end of one of the steam generating pipes is connected to the flue gas pipe of the calcium carbide furnace, and a connecting elbow is rotatably connected between two adjacent steam generating pipes. A transmission wheel is fixedly connected to the outer end of the steam generating pipe, and the two adjacent transmission wheels mesh with each other for transmission. One end of the steam generating pipe located inside the dust removal box is fixedly connected to a compression rod in an annular structure. One end of one of the steam generating pipes is rotatably connected to an air inlet pipe, and the other end of the air inlet pipe is connected to the inner wall of the first dust removal chamber.

[0010] Preferably, the water spraying mechanism includes a pipe joint, on which multiple water spray pipes are fixedly connected and penetrated. Multiple nozzles are fixedly connected and penetrated at the bottom end of each water spray pipe. A sliding rod is slidably fitted through the inner wall of the inner end of each water spray pipe. Multiple sealing plugs are fixedly connected and penetrated at the inner end of the sliding rod. The sealing plugs are slidably fitted with the inner wall of the water spray pipe. A conical block is fixedly connected and penetrated at the outer end of the sliding rod. A spring is fixedly connected and penetrated at one end of the conical block. The other end of the spring is fixedly connected and penetrated at one end of the water spray pipe. The outer wall of the conical block is in slidable contact with a squeezing rod.

[0011] Preferably, the driving mechanism includes a motor, which is fixedly connected to the outer wall of the dust collector. A convex-concave disc is fixedly connected to the output end of the motor. The outer wall of the convex-concave disc is in sliding contact with a contact wheel. A drive wheel is fixedly connected to one side of the convex-concave disc, and the drive wheel meshes with a transmission wheel therein for transmission.

[0012] Preferably, the transmission mechanism includes a universal joint, which is rotatably connected to the dust collector box. A driven wheel is fixedly connected to one end of the universal joint, and the driven wheel meshes with one of the transmission wheels for transmission. A worm gear is fixedly connected to the other end of the universal joint.

[0013] Preferably, one end of the permanent magnet adsorption cylinder extends through the inner wall of the dust collector to the outside, and the outer ends of two adjacent permanent magnet adsorption cylinders are connected by a belt friction drive. One of the permanent magnet adsorption cylinders is fixedly connected to a worm gear, and the worm gear meshes with a worm for transmission.

[0014] Preferably, one side of the top of the dust scraper seat is slidably in contact with the outer wall of the permanent magnet adsorption cylinder, a baffle is slidably fitted at the bottom opening of the dust scraper seat, a tension spring is fixedly connected to the outer end of the baffle, and the other end of the tension spring is fixedly connected to the dust scraper seat.

[0015] A method for using a dust removal device in calcium carbide production specifically includes the following steps:

[0016] S1. First, the high-temperature flue gas generated by the calcium carbide furnace is transported through a steam generation pipe.

[0017] S2. Then, the drive mechanism drives the steam generating pipe to rotate. At this time, the rotating steam generating pipe will cause the water spraying mechanism to spray water intermittently. When the water comes into contact with the high temperature steam generating pipe, it will cool down the high temperature flue gas inside.

[0018] S3. Then the cooled flue gas will be injected into the bottom of the dust collector. When the steam generating pipe rotates, it will drive the permanent magnet adsorption cylinder to rotate and adsorb through the transmission mechanism.

[0019] S4. When the permanent magnet adsorption cylinder rotates, the dust adsorbed on the surface of the permanent magnet adsorption cylinder will be scraped off by the dust scraper seat to ensure its filtration effect. Then, the flue gas after dust removal through the permanent magnet adsorption cylinder is discharged into the upper side of the dust collector. When water comes into contact with the high temperature steam generation pipe, water vapor will be generated, which can further remove dust from the flue gas.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] By setting up a steam generating pipe and a water spraying mechanism, when the steam generating pipe transports the high-temperature flue gas generated by the calcium carbide furnace, the rotating steam generating pipe will cause the water spraying mechanism to spray water intermittently. The sprayed water cools down the high-temperature flue gas in the steam generating pipe, which can effectively protect the magnetic properties of the permanent magnet in the permanent magnet adsorption cylinder, ensure that it works within the normal temperature range, extend the service life of the equipment, and reduce the flue gas temperature helps to improve the cohesion of dust particles in the flue gas, so that the dust removal device can capture and remove particulate matter in the flue gas more efficiently, thereby improving the overall dust removal efficiency.

[0022] By setting up a steam generating pipe and a water spraying mechanism, when the steam generating pipe transports the high-temperature flue gas generated by the calcium carbide furnace, the rotating steam generating pipe will cause the water spraying mechanism to spray water intermittently. The rotation design of the steam generating pipe avoids the problems of local overheating and uneven water cooling, which helps to extend the service life of the equipment. When the sprayed water comes into contact with the high-temperature steam generating pipe, it will generate water vapor. During the gasification process, it carries and condenses the fine dust particles in the flue gas, forming larger particles that are easier to settle, thereby improving the dust removal efficiency. The steam generation process utilizes the waste heat of the flue gas, eliminating the need for an external heat source, realizing energy reuse, and reducing operating energy consumption.

[0023] By setting up a transmission mechanism, the steam generating pipe and the permanent magnet adsorption cylinder are linked to rotate, so that the two core components do not need to be controlled separately, saving energy and control resources. At the same time, with the fixed dust scraper seat, the particles adsorbed on the permanent magnet adsorption cylinder can be scraped off in real time, maintaining its good adsorption performance and improving the continuous dust removal capability. In addition, a concave-convex disc is set up so that when the motor drives the steam generating pipe to rotate, the concave-convex disc can drive the air baffle in the exhaust pipe to open intermittently, realizing the timed release of steam in the exhaust pipe, ensuring that the steam and the dust-laden flue gas fully contact and react, and enhancing the condensation, wetting and coagulation effect of the steam on the dust. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the dust removal method and apparatus for calcium carbide production of the present invention when applied to a calcium carbide furnace;

[0025] Figure 2 This is a partial cross-sectional view of the overall structure of a dust removal method and apparatus for calcium carbide production according to the present invention;

[0026] Figure 3 This is a cross-sectional schematic diagram of the dust collector structure of a dust removal method and apparatus for calcium carbide production according to the present invention;

[0027] Figure 4 This is a schematic diagram of the steam generating pipe structure of a dust removal method and apparatus for calcium carbide production according to the present invention;

[0028] Figure 5This is a partial cross-sectional schematic diagram of the water spray mechanism structure of a dust removal method and apparatus for calcium carbide production according to the present invention;

[0029] Figure 6 This is a schematic diagram of the drive mechanism and other structures of a dust removal method and apparatus for calcium carbide production according to the present invention;

[0030] Figure 7 This is a schematic diagram of the transmission mechanism and permanent magnet adsorption cylinder structure of a dust removal method and apparatus for calcium carbide production according to the present invention.

[0031] Figure 8 This is a partial cross-sectional schematic diagram of the dust scraper seat structure of a dust removal method and apparatus for calcium carbide production according to the present invention.

[0032] The diagram shows: 1. Dust collector; 2. Steam generating pipe; 3. Water spray mechanism; 4. Drive mechanism; 5. Transmission mechanism; 6. Permanent magnet adsorption cylinder; 7. Dust scraper seat; 101. First dust collection chamber; 102. Second dust collection chamber; 103. Exhaust pipe; 104. Air baffle; 105. Tension spring one; 106. Contact wheel; 107. Air guide pipe; 108. Valve; 201. Connecting elbow; 202. Transmission wheel; 20 3. Extrusion rod; 204. Air inlet pipe; 301. Pipe connector; 302. Water spray pipe; 303. Nozzle; 304. Sliding rod; 305. Sealing plug; 306. Conical block; 307. Spring; 401. Motor; 402. Concave-convex disc; 403. Drive wheel; 501. Universal joint; 502. Driven wheel; 503. Worm gear; 601. Belt; 602. Worm wheel; 701. Baffle; 702. Tension spring II. Detailed Implementation

[0033] The following description is intended to disclose the invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will occur to those skilled in the art.

[0034] like Figures 1-8 The method and apparatus for dust removal in calcium carbide production shown includes a dust removal box 1. Multiple steam generating pipes 2 are rotatably connected through the upper inner wall of the dust removal box 1. A water spraying mechanism 3 is fixedly connected to the inner wall of the dust removal box 1. A driving mechanism 4 is fixedly connected to one side of the dust removal box 1. A transmission mechanism 5 is rotatably connected to the rear side of the dust removal box 1. Multiple permanent magnet adsorption cylinders 6 are rotatably connected to the lower inner wall of the dust removal box 1. A dust scraper seat 7 is provided below the permanent magnet adsorption cylinders 6.

[0035] The dust collector 1 is made of high-temperature resistant stainless steel and welded together. The inner wall is treated with anti-corrosion spraying, which can withstand the high temperature and corrosive gas erosion in the calcium carbide furnace flue gas, ensuring the long-term stable operation of the equipment.

[0036] like Figure 3As shown, the inner wall of the dust collector 1 is divided into a first dust collector chamber 101 and a second dust collector chamber 102. An exhaust pipe 103 is fixedly connected through the upper part of the second dust collector chamber 102. An air baffle 104 is slidably connected through the inner wall of the exhaust pipe 103. A tension spring 105 is fixedly connected to the outer end of the air baffle 104. The other end of the tension spring 105 is fixedly connected to the outer wall of the exhaust pipe 103. A contact wheel 106 is rotatably connected to the outer end of the air baffle 104. An air guide pipe 107 is fixedly connected through the inner wall of the dust collector 1. A valve 108 is fixedly connected through the outer wall of the dust collector 1. The inner end of the valve 108 is in communication with the inner wall of the second dust collector chamber 102.

[0037] The air baffle 104 is made of high-temperature resistant silicone material, which fits tightly against the inner wall of the exhaust pipe 103, providing excellent sealing performance and effectively preventing the premature discharge of flue gas; the tension spring 105 ensures the reliability of the air baffle 104's reset; the air guide pipe 107 is made of heat-resistant stainless steel and is used to connect the first dust removal chamber 101 and the second dust removal chamber 102; the valve 108 is a high-temperature resistant butterfly valve, which facilitates the periodic cleaning of the dust-containing wastewater that settles inside the dust removal box 1.

[0038] like Figure 4 As shown, one end of one steam generating pipe 2 is connected to the flue gas pipe of the calcium carbide furnace, and a connecting elbow 201 is rotatably connected between two adjacent steam generating pipes 2. A transmission wheel 202 is fixedly connected to the outer end of the steam generating pipe 2, and two adjacent transmission wheels 202 are meshed and driven. One end of the steam generating pipe 2 located in the dust removal box 1 is fixedly connected to a compression rod 203 in an annular structure. One end of one steam generating pipe 2 is rotatably connected to an air inlet pipe 204, and the other end of the air inlet pipe 204 is connected to the inner wall of the first dust removal chamber 101.

[0039] The extrusion rod 203 is made of alloy steel and the end is polished smooth, which can smoothly extrude the conical block 306 and avoid wear. A rotary sealing joint is set at the rotating connection between the air inlet pipe 204 and the steam generating pipe 2 to ensure that there is no leakage of high temperature flue gas during the rotating conveying process, while not affecting the rotation of the steam generating pipe 2.

[0040] like Figure 5 As shown, the water spraying mechanism 3 includes a pipe connector 301, on which multiple water spray pipes 302 are fixedly connected. Multiple nozzles 303 are fixedly connected to the bottom end of the water spray pipes 302. A sliding rod 304 is slidably fitted through the inner wall of the inner end of the water spray pipes 302. Multiple sealing plugs 305 are fixedly connected to the inner end of the sliding rod 304. The sealing plugs 305 are slidably fitted with the inner wall of the water spray pipes 302. A conical block 306 is fixedly connected to the outer end of the sliding rod 304. A spring 307 is fixedly connected to one end of the conical block 306. The other end of the spring 307 is fixedly connected to one end of the water spray pipe 302. The outer wall of the conical block 306 is in slidable contact with the extrusion rod 203.

[0041] The sealing plug 305 is made of high-temperature resistant rubber and fits tightly against the inner wall of the spray pipe 302, providing excellent sealing performance and effectively blocking water flow to achieve intermittent water spraying; the sliding rod 304 is made of stainless steel optical shaft with chrome plating and has a low coefficient of friction.

[0042] By setting up a steam generating pipe 2 and a water spraying mechanism 3, when the steam generating pipe 2 transports the high-temperature flue gas generated by the calcium carbide furnace, the rotating steam generating pipe 2 will cause the water spraying mechanism 3 to spray water intermittently. The sprayed water cools down the high-temperature flue gas in the steam generating pipe 2, which can effectively protect the magnetic properties of the permanent magnet in the permanent magnet adsorption cylinder 6, ensure that it works within the normal temperature range, extend the service life of the equipment, and reduce the flue gas temperature. This helps to increase the cohesion of dust particles in the flue gas, so that the dust removal device can more efficiently capture and remove particulate matter in the flue gas, thereby improving the overall dust removal efficiency.

[0043] like Figure 6 As shown, the drive mechanism 4 includes a motor 401, which is fixedly connected to the outer wall of the dust collection box 1. A convex-concave disc 402 is fixedly connected to the output end of the motor 401. The outer wall of the convex-concave disc 402 is in sliding contact with the contact wheel 106. A drive wheel 403 is fixedly connected to one side of the convex-concave disc 402. The drive wheel 403 meshes with the transmission wheel 202 therein for transmission.

[0044] The concave-convex disc 402 is made of alloy steel and has been hardened to be highly wear-resistant. Its concave-convex structure can precisely control the intermittent opening frequency of the air baffle 104.

[0045] like Figure 7 As shown, the transmission mechanism 5 includes a universal joint 501, which is rotatably connected to the dust collector box 1. One end of the universal joint 501 is fixedly connected to a driven wheel 502, which meshes with one of the transmission wheels 202 for transmission. The other end of the universal joint 501 is fixedly connected to a worm gear 503.

[0046] like Figure 7 As shown, one end of the permanent magnet adsorption cylinder 6 extends through the inner wall of the dust collector 1 to the outside. The outer ends of two adjacent permanent magnet adsorption cylinders 6 are connected by friction transmission via belt 601. One of the permanent magnet adsorption cylinders 6 has a worm wheel 602 fixedly connected to its outer end, and the worm wheel 602 meshes with the worm 503 for transmission.

[0047] The belt 601 is made of high-temperature resistant rubber synchronous belt, which provides smooth transmission and is not easy to slip, and can realize the synchronous rotation of multiple permanent magnet adsorption cylinders 6. The rotation direction of the permanent magnet adsorption cylinder 6 is opposite to the flue gas flow direction, which can increase the contact probability between dust and the surface of the adsorption cylinder and improve the adsorption efficiency.

[0048] like Figure 8As shown, the top side of the dust scraper seat 7 is slidably contacted with the outer wall of the permanent magnet adsorption cylinder 6. A baffle 701 is slidably fitted at the bottom opening of the dust scraper seat 7. A tension spring 702 is fixedly connected to the outer end of the baffle 701. The other end of the tension spring 702 is fixedly connected to the dust scraper seat 7.

[0049] The dust scraping end of the dust scraper seat 7 is made of wear-resistant polyurethane material, which fits tightly against the outer wall of the permanent magnet adsorption cylinder 6, resulting in good dust scraping effect without damaging the stainless steel sleeve on the surface of the adsorption cylinder. The interior of the dust scraper seat 7 has a hollow structure, which can temporarily store the scraped dust for convenient centralized processing. The baffle 701 is made of stainless steel and is always kept closed under the action of the tension spring 702 to prevent the stored dust from leaking out. When the dust is stored to a certain amount, the baffle 701 can be manually pulled to open and discharge the dust, which is convenient to operate. The tension spring 702 ensures the sealing reliability of the baffle 701.

[0050] A method for using a dust removal device in calcium carbide production specifically includes the following steps:

[0051] S1. First, the high-temperature flue gas generated by the calcium carbide furnace is transported through steam generation pipe 2;

[0052] S2. Then, the drive mechanism 4 drives the steam generating pipe 2 to rotate. At this time, the rotating steam generating pipe 2 will cause the water spraying mechanism 3 to spray water intermittently. When the water comes into contact with the high temperature steam generating pipe 2, it will cool down the high temperature flue gas inside.

[0053] S3. Then the cooled flue gas will be injected into the bottom of the dust collector 1. When the steam generating pipe 2 rotates, it will drive the permanent magnet adsorption cylinder 6 to rotate and adsorb through the transmission mechanism 5.

[0054] S4. When the permanent magnet adsorption cylinder 6 rotates, the dust adsorbed on the surface of the permanent magnet adsorption cylinder 6 will be scraped off by the dust scraper seat 7 to ensure its filtration effect. Then, the flue gas after dust removal through the permanent magnet adsorption cylinder 6 is discharged into the upper side of the dust collector 1. When water comes into contact with the high temperature steam generation pipe 2, water vapor will be generated, which can further remove dust from the flue gas.

[0055] Working principle: After the equipment is started, the high-temperature dusty flue gas generated by the calcium carbide furnace is first introduced into the steam generating pipe 2. At the same time, the motor 401 of the drive mechanism 4 is started. The output end of the motor 401 drives the concave-convex disc 402 and the drive wheel 403 to rotate synchronously. The drive wheel 403 meshes with the transmission wheel 202 of one of the steam generating pipes 2. Through the mutual meshing of adjacent transmission wheels 202, the steam generating pipe 2 is driven to rotate synchronously. During the rotation of the steam generating pipe 2, the extrusion rod 203 at its end periodically extrudes the conical block 306 of the water spraying mechanism 3.

[0056] When the extrusion rod 203 extrudes the conical block 306, the conical block 306 pushes the sliding rod 304 to slide into the water spray pipe 302, the spring 307 is compressed, the sealing plug 305 disengages from the inner wall of the water spray pipe 302, and the external high-pressure water enters the water spray pipe 302 through the pipe joint 301. After being atomized by the atomizing nozzle 303, it is sprayed onto the outer wall of the high-temperature steam generating pipe 2. After the atomized water comes into contact with the high-temperature pipe wall, it quickly vaporizes into water vapor and absorbs the heat of the high-temperature flue gas in the steam generating pipe 2, so that the flue gas temperature is reduced to a safe range, avoiding high temperature damage to the magnetic properties of the permanent magnet adsorption cylinder 6.

[0057] While the steam generating pipe 2 rotates, its transmission wheel 202 drives the driven wheel 502 of the transmission mechanism 5 to rotate. The driven wheel 502 drives the worm 503 to rotate through the universal joint 501. The worm 503 meshes with the worm wheel 602 at the outer end of the permanent magnet adsorption cylinder 6, driving the permanent magnet adsorption cylinder 6 to rotate. Through the friction transmission of the belt 601, the other permanent magnet adsorption cylinders 6 rotate synchronously at low speed. The rotating permanent magnet adsorption cylinders 6 use strong magnetism to efficiently adsorb large particles of dust that have agglomerated in the first dust removal chamber 101, ensuring that the dust is captured quickly.

[0058] During the rotation of the permanent magnet adsorption cylinder 6, its surface is always in close contact with the wear-resistant dust scraping end of the dust scraper seat 7. The adsorbed dust is scraped off in real time and falls into the interior of the dust scraper seat 7. Under the action of the tension spring 702, the baffle 701 remains closed, and the dust is temporarily stored to avoid secondary dust generation.

[0059] Then, the flue gas in the first dust removal chamber 101 enters the second dust removal chamber 102 through the air guide pipe 107. In the second dust removal chamber 102, the water vapor molecules generated by the atomizing nozzle 303 and sprayed on the outer wall of the high-temperature steam generating pipe 2 are adsorbed on the surface of fine dust particles, causing the dust to agglomerate and form large flocs, thereby improving the adsorption capacity of the dust.

[0060] Meanwhile, the convex-concave disc 402 driven by the motor 401 periodically presses the contact wheel 106 at the outer end of the baffle 104. When the protruding part of the convex-concave disc 402 presses the contact wheel 106, the contact wheel 106 drives the baffle 104 to slide outward of the exhaust pipe 103, the tension spring 105 is stretched, the exhaust pipe 103 is opened, and the purified flue gas in the second dust removal chamber 102 is discharged. The dust-laden water vapor is condensed by the condensation equipment connected to the exhaust pipe 103. When the concave part of the convex-concave disc 402 contacts the contact wheel 106, the tension spring 105 returns to its original position, driving the baffle 104 to close the exhaust pipe 103, ensuring that the water vapor and flue gas have enough time to mix and react fully, thus improving the dust removal effect.

[0061] When the dust accumulates to a certain amount in the dust scraper seat 7, the baffle 701 can be manually pulled to open the bottom opening of the dust scraper seat 7 and discharge the dust. After the dust discharge is completed, the baffle 701 is released and the tension spring 702 drives the baffle 701 to reset and close.

[0062] 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 process, method, article, or apparatus.

[0063] 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 principles of 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 claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A dust removal device for calcium carbide production, comprising a dust collection box (1), characterized in that: Multiple steam generating pipes (2) are rotatably connected to the upper inner wall of the dust collector (1). A water spraying mechanism (3) is fixedly connected to the inner wall of the dust collector (1). A driving mechanism (4) is fixedly connected to one side of the dust collector (1). A transmission mechanism (5) is rotatably connected to the rear side of the dust collector (1). Multiple permanent magnet adsorption cylinders (6) are rotatably connected to the lower inner wall of the dust collector (1). A dust scraper seat (7) is provided below the permanent magnet adsorption cylinders (6). The inner wall of the dust collector (1) is divided into a first dust collection chamber (101) and a second dust collection chamber (102). An exhaust pipe (103) is fixedly connected to the upper part of the second dust collection chamber (102). An air baffle is slidably connected to the inner wall of the exhaust pipe (103). A stopper (104) is provided with a tension spring (105) fixedly connected to its outer end. The other end of the tension spring (105) is fixedly connected to the outer wall of the exhaust pipe (103). A contact wheel (106) is rotatably connected to the outer end of the stopper (104). A guide pipe (107) is fixedly connected through the inner wall of the dust collector (1). A valve (108) is fixedly connected through the outer wall of the dust collector (1). The inner end of the valve (108) is connected to the inner wall of the second dust collector (102). One end of one of the steam generating pipes (2) is connected to the flue gas pipe of the calcium carbide furnace. A connecting elbow (201) is rotatably connected between two adjacent steam generating pipes (2). The outer end of the steam generating pipe (2) is fixed. A transmission wheel (202) is connected and connected. Two adjacent transmission wheels (202) are meshed and connected for transmission. One end of the steam generating pipe (2) located inside the dust collector (1) is fixedly connected to a compression rod (203) in a ring structure. One end of one of the steam generating pipes (2) is rotatably connected to an air inlet pipe (204). The other end of the air inlet pipe (204) is connected to the inner wall of the first dust collector (101). The water spraying mechanism (3) includes a pipe joint (301). Multiple water spraying pipes (302) are fixedly connected through the pipe joint (301). Multiple nozzles (303) are fixedly connected through the bottom end of the water spraying pipes (302). A sliding fit is provided through the inner wall of the inner end of the water spraying pipe (302). The sliding rod (304) has multiple sealing plugs (305) fixedly connected to its inner end. The sealing plugs (305) are slidably fitted with the inner wall of the water spray pipe (302). The sliding rod (304) has a conical block (306) fixedly connected to its outer end. A spring (307) is fixedly connected to one end of the conical block (306). The other end of the spring (307) is fixedly connected to one end of the water spray pipe (302). The outer wall of the conical block (306) is in slidable contact with the extrusion rod (203). The driving mechanism (4) includes a motor (401). The motor (401) is fixedly connected to the outer wall of the dust collector (1). A concave-convex disc (402) is fixedly connected to the output end of the motor (401).The outer wall of the convex-concave disc (402) is in sliding contact with the contact wheel (106). A drive wheel (403) is fixedly connected to one side of the convex-concave disc (402), and the drive wheel (403) meshes with one of the transmission wheels (202) for transmission.

2. The dust removal device for calcium carbide production according to claim 1, characterized in that: The transmission mechanism (5) includes a universal joint (501), which is rotatably connected to the dust collector (1). One end of the universal joint (501) is fixedly connected to a driven wheel (502), which meshes with one of the transmission wheels (202) for transmission. The other end of the universal joint (501) is fixedly connected to a worm gear (503).

3. The dust removal device for calcium carbide production according to claim 2, characterized in that: One end of the permanent magnet adsorption cylinder (6) extends through the inner wall of the dust collector (1) to the outside. The outer ends of two adjacent permanent magnet adsorption cylinders (6) are connected by friction transmission via belt (601). One of the permanent magnet adsorption cylinders (6) is fixedly connected to a worm wheel (602), and the worm wheel (602) is meshed with a worm (503) for transmission.

4. A dust removal device for calcium carbide production according to claim 1, characterized in that: The top side of the dust scraper seat (7) is slidably contacted with the outer wall of the permanent magnet adsorption cylinder (6). A baffle (701) is slidably fitted at the bottom opening of the dust scraper seat (7). A tension spring (702) is fixedly connected to the outer end of the baffle (701). The other end of the tension spring (702) is fixedly connected to the dust scraper seat (7).

5. A method of using a dust removal device for calcium carbide production, comprising the following steps: (The method uses the dust removal device for calcium carbide production as described in any one of claims 1-4) S1. First, the high-temperature flue gas generated by the calcium carbide furnace is transported through the steam generation pipe (2); S2. Then, the drive mechanism (4) drives the steam generating pipe (2) to rotate. At this time, the rotating steam generating pipe (2) will cause the water spraying mechanism (3) to spray water intermittently. When the water comes into contact with the high temperature steam generating pipe (2), it will cool down the high temperature flue gas inside. S3. Then the cooled flue gas will be injected into the bottom of the dust collector (1). When the steam generating pipe (2) rotates, it will drive the permanent magnet adsorption cylinder (6) to rotate and adsorb through the transmission mechanism (5). S4. When the permanent magnet adsorption cylinder (6) rotates, the dust adsorbed on the surface of the permanent magnet adsorption cylinder (6) will be scraped off by the dust scraper seat (7) to ensure its filtration effect. Then, the flue gas after dust removal by the permanent magnet adsorption cylinder (6) is discharged into the upper side of the dust removal box (1). When water comes into contact with the high temperature steam generation pipe (2), water vapor will be generated, which can further remove dust from the flue gas.

Images