A steel processing smoke dust collecting cloth bag dust collector device convenient to maintain

Abstract

The present application relates to the technical field of industrial pollution treatment, and provides a steel processing smoke dust collecting cloth bag dust collector device convenient to maintain, which comprises a shell, a top cover, a waste gas inlet pipe, a double-layer ventilation plate, a cloth bag dust collector body, an automatic dismounting module, a clean gas discharge pipe and a gas compression tank, arc-shaped limiting blocks one and two are arranged at the two ends of the framework in the cloth bag dust collector body, the arc-shaped limiting block two can penetrate the mounting hole, the automatic dismounting module comprises a control module, a movable ring and a sealing ring, the electromagnet unit in the control module is fixedly arranged on the surface of the annular base, the inner wall of the annular base is provided with a special-shaped groove, the movable ring and the sealing ring are connected with a spring, a magnetic core is embedded on one side of the movable ring, a limiting groove is arranged on the surface of the sealing ring, spherical protrusions are fixedly arranged on the side wall of the sealing ring, a movable pin is fixedly connected to the side of the sealing ring close to the annular base, the movable pin penetrates the movable ring, and the device has the characteristics of high replacement efficiency and simple maintenance.

Description

Technical Field

[0001] This invention relates to the field of industrial pollution control technology, specifically to a bag filter dust collector for collecting fumes from steel processing that is easy to maintain. Background Technology

[0002] The iron production process generates a large amount of scrap steel, such as the cut ends of continuously cast billets, scrap steel from tundish casting, and large pieces of scrap steel from steel slag processing. Currently, my country's steel yield is approximately 95%. Considering large pieces of steel slag and other scrap steel, tens of millions of tons of scrap steel need to be processed annually. For a medium-sized steel enterprise with an annual output of 5 million tons, the amount of scrap steel that needs to be processed annually often exceeds 200,000 tons. However, the scrap steel cutting process generates a large amount of high-temperature dust, which contains a large amount of iron oxide filings, making the production operating environment extremely harsh.

[0003] A baghouse dust collector is a dry dust filtration device. It is suitable for collecting fine, dry, non-fibrous dust. The filter bags are made of woven filter cloth or non-woven felt, utilizing the filtration effect of the fibrous fabric to filter dust-laden gas. When the dust-laden gas enters the baghouse dust collector, larger, heavier dust particles settle down due to gravity and fall into the ash hopper. The gas containing finer dust particles is purified as it passes through the filter media, as the dust is trapped.

[0004] A search revealed that CN215232796U discloses a detachable baghouse dust collector, comprising a dust collection box and dust collection bags. A control panel is located on the front of the dust collection box, an air inlet is located on the left side of the dust collection box, and a drying infrared generator is installed on the air inlet. A first fixing plate is located in the middle of the dust collection box, and a second fixing plate is located on the lower side of the dust collection box. A dust hopper is located at the bottom of the dust collection box, and a dust outlet is located below the dust hopper. An inner cavity is provided inside the dust collection box, and a bag mounting plate is located on the upper side of the dust collection box. A dust collection bag is located in the middle of the bag mounting plate, and a filter screen is installed at the bag opening. A flow guide box is located on the upper side of the bag mounting plate, and a clean air outlet is located on the left side of the flow guide box. An air box is located on the upper side of the flow guide box, achieving the purpose of disassembling and replacing the bag. Furthermore, because this utility model uses a threaded connection between the bag mounting plate and the dust collection box and the flow guide box, convenient and quick disassembly is achieved.

[0005] The existing bag filter dust collectors for collecting dust from steel processing still have the following defects: (1) Bolts, flanges and other fasteners need to be removed, which is difficult for a single person to operate and requires professional tools and protective equipment; (2) The single pulse cleaning effect is limited, especially for sticky dust, the filter bag is easy to clog, and frequent manual intervention is required, resulting in long downtime. Summary of the Invention

[0006] The purpose of this invention is to provide a bag filter dust collector for collecting fumes from steel processing that is easy to maintain, thus solving the problems of inconvenient maintenance and limited dust removal effect of traditional bag filters for collecting fumes from steel processing.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a bag filter dust collector for collecting fumes from steel processing, which is easy to maintain, includes a housing, wherein a top cover, an exhaust gas inlet pipe, a clean gas outlet pipe, and a gas compression tank are fixedly connected to the housing, and further includes: A double-layer ventilation panel is installed inside the outer casing. The surface of the double-layer ventilation panel is provided with mounting holes, which consist of round holes and arc-shaped holes. The three sets of arc-shaped holes are symmetrically distributed about the round holes. A sandwich layer is provided on the inner side of the double-layer ventilation panel. The bag filter body includes a filter bag and a frame. The frame is provided with an arc-shaped limiting block 1 and an arc-shaped limiting block 2 at both ends. The arc-shaped limiting block 2 can pass through the mounting hole. An automatic disassembly and assembly module includes a control module, a movable ring, and a sealing ring. The control module includes an annular base, an electromagnet unit, and a shaped groove. The annular base is fixedly connected inside the outer shell, the electromagnet unit is fixedly disposed on the surface of the annular base, and the inner wall of the annular base is provided with a shaped groove. A spring connects the movable ring and the sealing ring. A magnetic core is embedded on the side of the movable ring away from the sealing ring. The movable ring can slide along the axis of the annular base. The sealing ring surface is provided with a limiting groove, and the arc-shaped limiting block can enter the limiting groove. A spherical protrusion is fixedly provided on the side wall of the sealing ring, and the spherical protrusion can be slidably connected in the irregular groove. A movable pin is fixedly connected to the side of the sealing ring near the annular base, and the movable pin passes through the movable ring.

[0008] As a further embodiment of the present invention, the irregular groove includes a longitudinal groove one, a curved inclined groove one, a longitudinal groove two and a curved inclined groove two, the curved inclined groove one and the curved inclined groove two are connected between the longitudinal groove one and the longitudinal groove two, the curved inclined groove one is inclined upward and the curved inclined groove two is inclined downward.

[0009] As a further embodiment of the present invention, the movable ring and the annular base adopt a keyway and keyway mating structure.

[0010] As a further embodiment of the present invention, the surface of the movable ring is provided with an arc-shaped guide rail, and the movable pin is slidably disposed within the arc-shaped guide rail.

[0011] As a further aspect of the present invention, a fastener is fixedly connected to the bottom of the annular base, and the fastener is fixedly connected to the inside of the outer shell.

[0012] As a further embodiment of the present invention, a dustproof sleeve is provided at one end of the frame near the automatic disassembly and assembly module, the dustproof sleeve is movably fitted inside the automatic disassembly and assembly module, and a high-pressure air connector is provided at the other end of the frame.

[0013] As a further embodiment of the present invention, the gas compression tank is fixedly connected to a compressed gas discharge pipe, and a flexible pipe joint is connected between the high-pressure gas connector and the compressed gas discharge pipe.

[0014] The beneficial effects of the present invention are as follows: (1) The arc-shaped limiting block of the bag frame of this application is precisely matched with the special mounting hole of the double-layer ventilation plate. Through the combined drive of the electromagnet unit and the spring, it can be positioned by simply inserting it vertically. When the electromagnet unit is energized, it overcomes the spring force and drives the moving ring and sealing ring downward, and simultaneously realizes the bag rotation of 60°, so that the arc-shaped limiting block is misaligned with the mounting hole and locks it. When the electromagnet unit is de-energized, the spring resets, automatically unlocks and pushes out the bag, making it easy to take out. When the electromagnet fails, the bag body can be directly pressed to unlock it without additional tools, ensuring maintenance reliability, greatly reducing maintenance costs and labor intensity, and having the characteristics of high replacement efficiency and simple maintenance. (2) Based on the gas compression tank spraying compressed air into the bag to remove dust from the surface of the filter bag, this application uses the periodic control of the electromagnet to make the body of the bag dust collector shake up and down and rotate 60 degrees back and forth. Through the dual action of centrifugal force and mechanical vibration, the dust accumulated in the folds of the filter bag can be thoroughly removed. It has the characteristics of high dust removal efficiency and reduced downtime maintenance frequency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram illustrating the repair process of the present invention.

[0016] Figure 2 This is a perspective view of the present invention.

[0017] Figure 3 This is a top view during the repair of the present invention.

[0018] Figure 4 This is a perspective view of the bag filter body according to an embodiment of the present invention.

[0019] Figure 5 This is an exploded view of the automatic assembly / disassembly module according to an embodiment of the present invention.

[0020] Figure 6 This is a cross-sectional view of the control module in an embodiment of the present invention.

[0021] Figure 7 This is a cross-sectional view of the automatic disassembly and assembly module according to an embodiment of the present invention.

[0022] Figure 8This is a cross-sectional view of the bag filter body and the automatic disassembly module according to an embodiment of the present invention.

[0023] Figure 9 This is a planar sectional view of the present invention.

[0024] Figure 10 For the present invention Figure 9 A magnified view of a portion of point a.

[0025] Figure 11 This is a partially enlarged view of the bag filter body of the present invention when it is fixed.

[0026] Reference numerals: 1 - Outer shell; 2-Double-layer ventilation panel, 21-Mounting hole, 22-Interlayer; 3- Bag filter body, 31- Frame, 311- Arc-shaped limiting block one, 312- Arc-shaped limiting block two, 313- Dustproof sleeve, 32- High-pressure air connector; 4-Automatic disassembly and assembly module, 41-Control module, 411-Annular base, 412-Electromagnet unit, 413-Irregular groove, 4131-Longitudinal groove one, 4132-Curved inclined groove one, 4133-Longitudinal groove two, 4134-Curved inclined groove two, 414-Fastener, 42-Moving ring, 421-Arc guide rail, 422-Spring, 423-Magnetic core, 43-Sealing ring, 431-Limiting groove, 432-Spherical protrusion, 433-Moving pin; 5-Top cover.

[0027] 6-Exhaust gas inlet pipe; 7-Clean gas exhaust pipe; 8-Gas compression tank, 81-Compressed gas discharge pipe, 82-Flexible pipe fitting. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0029] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0030] Please see Figures 1 to 11 In one embodiment of the present invention, a bag filter for collecting fumes from steel processing, which is easy to maintain, includes a housing 1. The housing 1 is fixedly connected to a top cover 5, a waste gas inlet pipe 6, a clean gas outlet pipe 7, and a gas compression tank 8. It also includes: A double-layer ventilation plate 2 is disposed inside the outer casing 1. The surface of the double-layer ventilation plate 2 is provided with mounting holes 21, which are composed of round holes and arc-shaped holes. Three sets of arc-shaped holes are symmetrically distributed about the round holes. A sandwich layer 22 is disposed on the inner side of the double-layer ventilation plate 2. The bag filter body 3 includes a filter bag and a frame 31. The frame 31 is provided with an arc-shaped limiting block 311 and an arc-shaped limiting block 312 at both ends. The arc-shaped limiting block 312 can pass through the mounting hole 21. The automatic disassembly and assembly module 4 includes a control module 41, a movable ring 42, and a sealing ring 43. The control module 41 includes an annular base 411, an electromagnet unit 412, and a shaped groove 413. A fastener 414 is fixedly connected to the bottom of the annular base 411 and is fixedly connected to the inside of the outer shell 1. The electromagnet unit 412 is fixedly disposed on the surface of the annular base 411. A shaped groove 413 is provided on the inner wall of the annular base 411. The shaped groove 413 includes a first longitudinal groove 4131, a first curved groove 4132, a second longitudinal groove 4133, and a second curved groove 4134. The first curved groove 4132 and the second curved groove 4134 are connected between the first longitudinal groove 4131 and the second longitudinal groove 4133. The first curved groove 4132 is inclined upward and the second curved groove 4134 is inclined downward. The movable ring 42 and the annular base 411 can be connected by a key bar and keyway structure (not shown in the figure) to prevent the movable ring 42 from rotating and make it only perform linear motion. A spring 422 is connected between the movable ring 42 and the sealing ring 43. A magnetic core 423 is embedded on the side of the movable ring 42 away from the sealing ring 43. The movable ring 42 can slide along the axis of the annular base 411. The sealing ring 43 has a limiting groove 431 on its surface, and the arc-shaped limiting block 311 can enter the limiting groove 431. The sealing ring 43 has a spherical protrusion 432 fixedly provided on its side wall, and the spherical protrusion 432 can be slidably connected in the irregular groove 413. The sealing ring 43 has a movable pin 433 fixedly connected on its side near the annular base 411. The movable ring 42 has an arc-shaped guide rail 421 on its surface, and the movable pin 433 is slidably disposed in the arc-shaped guide rail 421.

[0031] In this embodiment of the invention, the installation steps are as follows: S100. Open the top cover 5. Since the limiting groove 431 and the arc-shaped hole of the mounting hole 21 are aligned vertically in the initial state, simply align the arc-shaped limiting block 311 of the bag filter body 3 with the arc-shaped hole and place it into the mounting hole 21 to ensure that the arc-shaped limiting block 311 is accurately inserted into the limiting groove 431. (Refer to the attached document.) Figure 9-10 Finally, the top of the bag filter body 3 is flush with the top of the double-layer ventilation plate 2; S200, the control electromagnet unit 412 is energized. After being energized, the electromagnet unit 412 overcomes the upward elastic force of the spring 422 and magnetically adheres to the magnetic core 423. On the one hand, it drives the movable ring 42, the sealing ring 43, and the bag filter body 3 to descend a certain distance along the irregular groove 413 through the spherical protrusion 432. The spherical protrusion 432 first descends from the longitudinal groove 4131 to the position of the curved inclined groove 4132. Descending to this position means that the arc-shaped limiting block 312 is located below the arc hole (or the clamp of the double-layer ventilation plate 2). When the spherical protrusion 432 continues to slide along the curved groove 4132 to the longitudinal groove 4133, the sealing ring 43 and the bag filter body 3 rotate 60 degrees, which means that the arc-shaped limiting block 312 is misaligned with the arc-shaped hole. The control electromagnet is de-energized, and the upward elastic force of the spring 422 drives the spherical protrusion 432 to move upward along the longitudinal groove 4133 a certain distance until the arc-shaped limiting block 312 contacts the top of the interlayer 22. At this time, the bag filter body 3 is elastically fixed in the interlayer 22 by the spring 422.

[0032] When the pressure difference between the inside and outside of the bag filter body 3 is abnormal (the pressure difference is monitored by a differential pressure sensor installed on the bag filter body 3), the control equipment shuts down and automatically controls the corresponding electromagnet unit 412 to be energized. According to the principle of step S200, the spherical protrusion 432 first descends to the bottom along the second longitudinal groove 4133, and then slides along the second curved groove 4134 to the bottom of the first longitudinal groove 4131. At this time, the movable ring 42, the sealing ring 43 and the bag filter body 3 rotate 60 degrees in opposite directions, which means that the second arc-shaped limit block 312 is aligned with the arc-shaped hole. The electromagnet is de-energized, and the upward elastic force of the spring 422 drives the spherical protrusion 432 to move upward and reset along the second longitudinal groove 4133. At this time, the top of the bag filter body 3 is once again level with the top of the double-layer ventilation plate 2. The top cover 5 is opened, and the operator can directly take it out from the mounting hole 21.

[0033] When the electromagnet unit 412 is damaged or an abnormal power outage occurs, under the premise that the control equipment is closed and the top cover 5 is opened, the user can use a tool to directly press down on the bag dust collector body 3. The principle is the same as step S100. The movable ring 42, the sealing ring 43 and the bag dust collector body 3 can still rotate 60 degrees in the opposite direction, so that the arc-shaped limit block 312 is manually aligned with the arc-shaped hole, which has the characteristics of easy disassembly and maintenance.

[0034] Please see Figure 3 and Figure 10 In another embodiment of the present invention, a dustproof sleeve 313 is provided at one end of the frame 31 near the automatic disassembly and assembly module 4, the dustproof sleeve 313 is movably fitted inside the automatic disassembly and assembly module 4, and a high-pressure air connector 32 is provided at the other end of the frame 31.

[0035] Please see Figure 10 Furthermore, the gas compression tank 8 is fixedly connected to a compressed gas discharge pipe 81, and a flexible pipe joint 82 is connected between the high-pressure gas connector 32 and the compressed gas discharge pipe 81.

[0036] In this embodiment of the invention, during operation, as the dust adsorbed on the surface of the filter bag increases, although the weight of the filter bag body 3 also increases, the upward elastic force of the spring 422 is greater than the weight of the filter bag body under extreme conditions. Therefore, the filter bag body 3 adsorbing dust will not fall due to the elastic force of the spring 422. In addition to using the gas compression tank 8 to discharge compressed air into the filter bag body 3 through the flexible pipe joint 82 to remove the adsorbed dust, this application can also intermittently control the electromagnet to turn on and off, thereby controlling the filter bag body 3 to perform reciprocating rotation and up-and-down shaking actions, thereby playing a mechanically assisted role in shaking off the dust. The dustproof sleeve 313 can play a sealing role in the process of dust entering the filter bag body 3, and the sealing ring 43 can play a sealing role in the process of shaking off the dust. Both can prevent dust from entering the automatic disassembly module 4.

[0037] In summary, the arc-shaped limiting block of the bag frame 31 of this application precisely matches the special mounting hole 21 of the double-layer ventilation plate 2. Through the combined drive of the electromagnet unit 412 and the spring 422, positioning can be completed simply by vertical insertion. When the electromagnet unit 412 is energized, it overcomes the elastic force of the spring 422, driving the movable ring 42 and the sealing ring 43 downward, simultaneously rotating the bag by 60°, so that the arc-shaped limiting block is misaligned with the mounting hole 21, thus completing the locking. When the electromagnet unit 412 is de-energized, the spring 422 resets, automatically unlocking and pushing out the bag for easy removal. In case of electromagnet failure, the bag body can be directly pressed to unlock it without additional tools, ensuring maintenance reliability, significantly reducing maintenance costs and labor intensity, and featuring high replacement efficiency and simple maintenance.

[0038] This application utilizes compressed air injected into the filter bag by the gas compression tank 8 to remove dust from the surface of the filter bag. By periodically controlling the electromagnet to turn on and off, the filter bag dust collector body 3 is made to shake up and down and rotate 60 degrees back and forth. Through the dual action of centrifugal force and mechanical vibration, the dust accumulated in the folds of the filter bag can be thoroughly removed. It has the characteristics of high dust removal efficiency and reduced downtime maintenance frequency.

[0039] While several embodiments and examples of the present invention have been described for those skilled in the art, these embodiments and examples are provided as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A baghouse dust collector for collecting fumes from steel processing, easy to maintain, comprising a housing (1), wherein the housing (1) is fixedly connected to a top cover (5), a waste gas inlet pipe (6), a clean gas outlet pipe (7), and a gas compression tank (8), characterized in that, Also includes: A double-layer ventilation plate (2) is provided inside the outer shell (1). The surface of the double-layer ventilation plate (2) is provided with mounting holes (21). The mounting holes (21) are composed of round holes and arc-shaped holes. The three sets of arc-shaped holes are symmetrically distributed about the round holes. A sandwich layer (22) is provided on the inner side of the double-layer ventilation plate (2). The bag filter body (3) includes a bag and a frame (31). The frame (31) is provided with an arc-shaped limiting block one (311) and an arc-shaped limiting block two (312) at both ends. The arc-shaped limiting block two (312) can pass through the mounting hole (21). Automatic disassembly and assembly module (4), the automatic disassembly and assembly module (4) includes a control module (41), a movable ring (42) and a sealing ring (43). The control module (41) includes an annular base (411), an electromagnet unit (412) and a shaped groove (413). The annular base (411) is fixedly connected inside the outer shell (1). The electromagnet unit (412) is fixedly disposed on the surface of the annular base (411). The inner wall of the annular base (411) is provided with a shaped groove (413). A spring (422) is connected between the movable ring (42) and the sealing ring (43). A magnetic core (423) is embedded on the side of the movable ring (42) away from the sealing ring (43). The movable ring (42) can slide along the axis of the annular base (411). The sealing ring (43) has a limiting groove (431) on its surface. The arc-shaped limiting block (311) can enter the limiting groove (431). The sealing ring (43) has a spherical protrusion (432) fixedly provided on its side wall. The spherical protrusion (432) can slide in the irregular groove (413). The sealing ring (43) has a movable pin (433) fixedly connected to the side of the sealing ring (43) near the annular base (411). The movable pin (433) passes through the movable ring (42).

2. The bag filter dust collector for collecting fumes from steel processing, as described in claim 1, is characterized in that... The irregular groove (413) includes a longitudinal groove one (4131), a curved inclined groove one (4132), a longitudinal groove two (4133), and a curved inclined groove two (4134). The curved inclined groove one (4132) and the curved inclined groove two (4134) are connected between the longitudinal groove one (4131) and the longitudinal groove two (4133). The curved inclined groove one (4132) is inclined upward, and the curved inclined groove two (4134) is inclined downward.

3. The bag filter dust collector for collecting fumes from steel processing, as described in claim 2, is characterized in that... The movable ring (42) and the annular base (411) are connected by a keyway and keyway structure.

4. The bag filter dust collector for collecting fumes from steel processing, as described in claim 3, is characterized in that... The surface of the movable ring (42) is provided with an arc-shaped guide rail (421), and the movable pin (433) is slidably disposed in the arc-shaped guide rail (421).

5. A bag filter dust collector for collecting fumes from steel processing, as described in claim 4, is characterized in that... The bottom of the annular base (411) is fixedly connected to a fastener (414), and the fastener (414) is fixedly connected to the inside of the outer shell (1).

6. A bag filter dust collector for collecting fumes from steel processing, as described in claim 1, is characterized in that... The frame (31) is provided with a dustproof sleeve (313) at one end near the automatic disassembly module (4), and the dustproof sleeve (313) is movably fitted inside the automatic disassembly module (4). The other end of the frame (31) is provided with a high-pressure air connector (32).

7. A bag filter dust collector for collecting fumes from steel processing, as described in claim 6, is characterized in that... The gas compression tank (8) is fixedly connected to a compressed gas discharge pipe (81), and a flexible pipe joint (82) is connected between the high-pressure gas connector (32) and the compressed gas discharge pipe (81).

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