A smoke and dust collection device for a reciprocating steel rolling mill

Abstract

The invention discloses a reciprocating type steel rolling mill smoke and dust collection device, comprising a dust hood and a dust extraction pipe, wherein the dust hood is formed by hingedly connecting two hood bodies, the hood body comprising an outer hood and an inner hood, the outer hood is connected to the inner hood on all sides, a cavity is arranged between the outer hood and the inner hood, dust suction holes are evenly arranged on the inner hood, the interior of the inner hood is divided into a plurality of dust suction chambers by a plurality of partitions, the lower end of the dust extraction pipe is connected to an equalizing pipe, a pull pipe corresponding to the number of dust suction chambers is connected to the equalizing pipe, an air outlet is arranged at the upper end of the outer hood, an arc suction pipe slidably connected to the pull pipe is connected to the air outlet, each dust suction chamber corresponds to a suction pipe, and a plug plate for adjusting the air volume is arranged on the side wall of the pull pipe. The opening size of the dust hood can be adjusted according to demand, the generated water vapor and dust can be fully absorbed, and the dust collection effect and efficiency of the dust hood are improved.

Description

Technical Field

[0001] The invention relates to the technical field of steel dust removal, in particular to a reciprocating type steel rolling mill smoke and dust collection device. Background Art

[0002] In the H-beam production process, a large amount of water vapor and iron oxide powder are generated during the rolling of the red-hot steel billet. Although part of the iron oxide dust is taken away by the high-pressure water, a large amount of ultrafine iron oxide dust still diffuses upward with the water vapor to form yellow-white steam pollutants. The main components are Fe2O3, FeO, water vapor, etc., which escape into the workshop. These large amounts of steam containing ultrafine iron oxide dust not only seriously pollute the working environment in the workshop and affect the health of the workers, but also cause large-scale dust pollution and water vapor corrosion to some production equipment in the workshop, such as transformers, sensors, high-precision hydraulic valve groups and other electrical components.

[0003] At present, the water mist dust removal equipment invested in the rough rolling mill of the medium-sized line of the steel plant adopts a fixed size structure. When processing steel sections of different sizes, some steel sections are relatively wide and some are relatively narrow. In order to meet the maximum size of steel sections, the dust hood is designed to be larger in size, the cost investment is higher, and it causes a waste of air volume when processing relatively narrow steel sections. The current dust collection device is only a simple hood body, the dust collection effect is not good, and it is easy to cause the overflow of water vapor and dust. Summary of the invention

[0004] The present invention is aimed at the above-mentioned deficiencies in the prior art and provides a smoke and dust collection device for a reciprocating steel rolling mill. The dust hood adopts an open-and-close structure, that is, the opening size of the dust hood can be adjusted according to demand, and the generated water vapor and dust can be fully absorbed. The dust hood is divided into dust chambers with adjustable suction force, and the suction force can be reasonably adjusted according to the amount of water vapor and dust generated in different parts of the steel, thereby achieving a reasonable distribution of suction force, ensuring the thoroughness of water vapor and dust absorption, and improving the dust collection effect and efficiency of the dust hood.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A reciprocating type steel rolling mill smoke and dust collection device comprises a dust suction hood and a dust extraction pipe, the dust suction hood is formed by hingedly connecting two hood bodies, the hood body comprises an outer hood and an inner hood, the outer hood is connected to the inner hood on all sides, a cavity is provided between the outer hood and the inner hood, dust suction holes are evenly provided on the inner hood, the interior of the inner hood is divided into a plurality of dust suction chambers by a plurality of partitions, an equalizing pipe is connected to the lower end of the dust extraction pipe, a pulling pipe corresponding to the number of the dust suction chambers is connected to the equalizing pipe, an air outlet is provided at the upper end of the outer hood, an arc-shaped suction pipe slidably connected to the pulling pipe is connected to the air outlet, each dust suction chamber corresponds to a suction pipe, and a plug plate for adjusting the air volume is provided on the side wall of the pulling pipe.

[0007] Preferably, the two outer covers are connected by a rotating shaft, an ear plate is provided at the upper end of each outer cover, and a hydraulic cylinder is hinged between the ear plates of the two outer covers.

[0008] Preferably, a guide groove is provided on the side wall of the inner cover, an inner baffle is provided in the cavity, and the inner baffle is connected to the partition through a pull plate.

[0009] Preferably, the partitions in the two covers are respectively marked as a first outer baffle and a second outer baffle, the first outer baffle is provided with an arc-shaped connecting hole, and the side wall of the second outer baffle is provided with a connecting column that slidably cooperates with the connecting hole.

[0010] Preferably, a guide rod is provided in the inner cover, a sliding hole cooperating with the guide rod is provided on the partition, the partitions at both ends of the cover body are fixedly connected to the guide rod and the cover body, and the remaining partitions are slidably matched with the guide rod, and a fixing mechanism for fixing the partitions is provided on the guide rod.

[0011] Preferably, the fixing mechanism includes a positioning plate and a positioning bolt, a guide hole is provided on the guide rod, positioning plates are provided on both sides of the guide rod, the two positioning plates are connected by a slider, the slider cooperates with the guide hole, a clamping plate is provided on the side wall of the positioning plate, and the two clamping plates are connected by a positioning bolt.

[0012] Preferably, sealing plates are provided at both ends of one of the cover bodies, and the width of the sealing plate is greater than the width of the cover body.

[0013] Preferably, the dividing pipe is divided into a plurality of flow channels by a dividing plate, each flow channel is connected to a pull tube, a support plate is provided on the side wall of the pull tube, and a locking bolt for fixing the plug plate is provided on the support plate.

[0014] Preferably, the upper end of the dust extraction pipe is connected to a delivery elbow, a condensing device is provided in the delivery elbow, the bottom of the delivery elbow is connected to a water collecting box, and a drainage pipe is provided on the water collecting box.

[0015] Preferably, the condensing device comprises a plurality of condensing plates, the interior of each condensing plate is a cavity structure, air holes are arranged on the condensing plates, the plurality of condensing plates are connected by connecting pipes, and the two ends of the condensing device are respectively connected with a water inlet pipe and a water outlet pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The dust hood of the present invention adopts an open-and-close structure, that is, the opening size of the dust hood can be adjusted according to needs, and the generated water vapor and dust can be fully absorbed. The dust hood is divided into dust collection chambers with adjustable suction force. The suction force can be reasonably adjusted according to the amount of water vapor and dust generated in different parts of the steel, thereby achieving a reasonable distribution of the suction force, ensuring the thoroughness of the absorption of water vapor and dust, and improving the dust collection effect and efficiency of the dust hood.

[0018] 2. The present invention arranges an inner baffle to synchronously separate the cavity between the outer cover and the inner cover according to the size of the dust collection chamber, thereby ensuring sufficient suction in different dust collection chambers and realizing rational use of wind force. The baffle is connected to the partition to realize synchronous adjustment. The first outer baffle and the second outer baffle rotate with the cover body while also satisfying the separation of different dust collection chambers, thereby increasing the convenience of device adjustment.

[0019] 3. The fixing mechanism of the present invention can fix and support the position of the partition. The partition can be clamped and fixed by the positioning plate, which not only ensures the reliability of the position but also supports the partition, thereby improving the stability and firmness of the partition.

[0020] 4. The cover body of the present invention comprises an inner cover and an outer cover, which increases the structural strength and heat insulation effect, improves the safety of use, and provides dust suction holes on the inner cover, which improves the uniform arrangement of suction force and increases the dust suction effect.

[0021] 5. The suction pipe of the present invention not only plays the role of conveying waste gas, but also can pull and fix the dust hood, and cooperate with the pulling pipe to follow the angle change of the dust hood. The suction pipes are symmetrically distributed to ensure the suction force and dust collection uniformity in each hood body, while ensuring the stability of the dust hood fixation.

[0022] 6. The present invention is provided with an equalizing pipe, and the suction force in each pull pipe is ensured to be the same through the equalizing plate. The wind force in each pull pipe can be adjusted through the plug plate. A total dust extraction pipe is divided into multiple pull pipes with adjustable suction force, making the device simpler, more convenient to use, and more reasonable in energy utilization.

[0023] 7. The present invention is provided with a conveying network pipe and a condensing device to preliminarily recycle the water vapor and dust in the exhaust gas, thereby reducing the subsequent dust removal pressure and improving the purification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a left side view of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of the dust hood and the dust extraction pipe;

[0026] Figure 3 is a cross-sectional view of the present invention;

[0027] Figure 4 It is a schematic diagram of the three-dimensional structure of the present invention;

[0028] Figure 5 is a schematic diagram of the structure of a condensing device;

[0029] Figure 6 It is a structural schematic diagram of the condensation plate;

[0030] Figure 7 It is a schematic diagram of the structure of the dust hood;

[0031] Figure 8 A bottom view of the dust hood;

[0032] Fig. 9 is a schematic diagram of the structure of the guide rod;

[0033] Fig.10 It is a structural schematic diagram of the fixing mechanism.

[0034] In the figure: 1-dust hood; 101-outer cover; 102-air outlet; 103-hydraulic cylinder; 104-ear plate; 105-rotating shaft; 106-guide groove; 107-sealing plate; 108-inner cover; 109-dust suction hole; 2-partition plate; 201-inner baffle plate; 202-sliding hole; 203-first outer baffle plate; 204-connecting hole; 205-connecting column; 206-second outer baffle plate; 207-pull plate; 3-suction pipe; 301-limiting ring; 4-dust suction pipe; 401- Equalizing pipe; 402-equalizing plate; 403-pull pipe; 404-support plate; 405-locking bolt; 5-delivery elbow; 501-water collecting box; 502-drain pipe; 6-condensing device; 601-water inlet pipe; 602-condensing plate; 603-connecting pipe; 604-water outlet pipe; 605-air hole; 7-guide rod; 701-guide hole; 8-fixing mechanism; 801-positioning plate; 802-slider; 803-clamping plate; 804-positioning bolt; 9-insertion plate. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] like Figure 1 , 4As shown, a reciprocating steel rolling mill smoke and dust collection device includes a dust hood 1 and a dust extraction pipe 4. The dust hood 1 is formed by hingedly connecting two hood bodies, and the opening size of the dust hood 1 can be adjusted. The hood body includes an outer hood 101 and an inner hood 108. The outer hood 101 is connected to the inner hood 108 on all sides. A cavity is provided between the outer hood 101 and the inner hood 108. Dust holes 109 are evenly provided on the inner hood 108 to collect water vapor and dust. The interior of the inner hood 108 is divided into multiple dust chambers by multiple partitions 2. The dust extraction pipe 4 The lower end is connected to an equalizing pipe 401, and the equalizing pipe 401 is connected to a pull pipe 403 corresponding to the number of dust suction chambers. The upper end of the outer cover 101 is provided with an air outlet 102, and the air outlet 102 is connected to an arc-shaped suction pipe 3 slidably connected to the pull pipe 403. Each dust suction chamber corresponds to a suction pipe 3, and the side wall of the pull pipe 403 is provided with an air volume adjustment plate 9. The suction force of different dust suction chambers can be adjusted by the plug plate 9. The air volume is reasonably distributed according to the amount of water vapor and dust at different positions of the steel section, thereby improving the dust suction effect.

[0037] like Figure 7 As shown, the two outer covers 101 are connected by a rotating shaft 105, and an ear plate 104 is provided at the upper end of each outer cover 101. A hydraulic cylinder 103 is hinged between the ear plates 104 of the two outer covers 101. The angle between the two cover bodies is adjusted by the hydraulic cylinder 103. In order to improve the separation effect of the partition 2, an inner baffle 201 is provided in the cavity between the inner cover 108 and the outer cover 101, and the inner baffle 201 is connected to the partition 2 through a pull plate 207.

[0038] Sealing plates 107 are provided at both ends of one of the covers. The width of the sealing plate 107 is greater than the width of the cover, so that the gap between the two covers can be blocked to avoid waste of wind force.

[0039] like Figure 8 As shown, the partitions 2 at both ends of the cover body and the inner baffle 201 are fixedly connected to the cover body, and at the same time, the two ends of the cover body are blocked, so that the cover body forms a box structure with only an open bottom. Except for the partitions 2 and the inner baffle 201 at both ends, the remaining partitions 2 can drive the connected inner baffle 201 to slide, thereby realizing the adjustment of the size of the dust chamber. A guide rod 7 is provided in the inner cover 108, and a sliding hole 202 cooperating with the guide rod 7 is provided on the partition 2. The partitions 2 at both ends of the cover body are fixedly connected to the guide rod 7 and the cover body, while the remaining partitions 2 are slidably matched with the guide rod 7. A guide groove 106 is provided on the side wall of the inner cover 108, and a pull plate 207 cooperates with the guide groove 106. A fixing mechanism 8 for fixing the partition 2 is provided on the guide rod 7.

[0040] like Figure 3As shown, the partitions 2 in the two covers are respectively marked as the first outer baffle plate 203 and the second outer baffle plate 206. The first outer baffle plate 203 is close to the second outer baffle plate 206. A circular arc connecting hole 204 is provided on the first outer baffle plate 203. The center of the circular arc connecting hole 204 is located on the center line of the rotating shaft 105. A connecting column 205 that slidably cooperates with the connecting hole 204 is provided on the side wall of the second outer baffle plate 206. A blocking cap is provided on the end of the connecting column 205. The first outer baffle plate 203 is located between the second outer baffle plate 206 and the blocking cap. The connecting column 205 revolves around the rotating shaft 105 and slides in the connecting hole 204. The first outer baffle plate 203 and the second outer baffle plate 206 are pulled by the connecting column 205, so that the first outer baffle plate 203 and the second outer baffle plate 206 are pulled tightly and do not separate.

[0041] According to the above records, the partitions 2 at both ends cannot slide, but can rotate around the rotating shaft 105 following the adjustment of the cover body. Therefore, the partitions 2 at both ends fix the guide rod 7. After removing the partitions 2 at both ends, the remaining partitions 2 can also slide on the guide rod 7 to adjust the size of the dust collection chamber, thereby adjusting the size of the dust collection chamber according to the different lengths of profiles and the amount of gas and dust generated at different processing positions, and adjusting the suction force of different dust collection chambers.

[0042] The partition 2 is fixed by a fixing mechanism 8, such as Fig.10 As shown, the fixing mechanism 8 includes a positioning plate 801 and a positioning bolt 804. Fig. 9 As shown, a guide hole 701 is provided on the guide rod 7, and positioning plates 801 are provided on both sides of the guide rod 7. The two positioning plates 801 are connected by a slider 802, and the slider 802 cooperates with the guide hole 701. A clamping plate 803 is provided on the side wall of the positioning plate 801. The positioning bolt 804 passes through the guide hole 701 to tighten and fix the two clamping plates 803. Fixing mechanisms 8 are provided on both sides of the first outer baffle plate 203 and the second outer baffle plate 206 for clamping and fixing, which not only realizes the fixation of the partition 2, but also improves the stability of the support of the partition 2.

[0043] like Figure 2 As shown, the dividing tube 401 is divided into a plurality of flow channels by the dividing plate 402, each flow channel is connected with a pull tube 403, a support plate 404 is provided on the side wall of the pull tube 403, a locking bolt 405 for fixing the plug plate 9 is provided on the support plate 404, the plug plate 9 is located above the suction pipe 3, and the opening size of the pull tube 403 can be adjusted by sliding the plug plate 9, thereby adjusting the air volume; wherein, the suction pipe 3 is an arc tube, and the center of the arc suction pipe 3 is located on the center line of the rotating shaft 105, and when the cover body rotates to adjust the angle, the suction pipe 3 slides between the pull tube 403, and a limiting ring 301 is provided at one end of the suction pipe 3 located in the pull tube 403.

[0044] The upper end of the dust extraction pipe 4 is connected to a delivery elbow 5, in which a condensing device 6 is arranged, and the bottom of the delivery elbow 5 is connected to a water collecting box 501, on which a drainage pipe 502 is arranged. Figure 5 , 6 As shown, the condensation device 6 includes a plurality of condensation plates 602, the interior of the condensation plate 602 is a cavity structure, and an air hole 605 is provided on the condensation plate 602. The plurality of condensation plates 602 are connected by a connecting pipe 603, and the two ends of the condensation device 6 are respectively connected with a water inlet pipe 601 and a water outlet pipe 604, and the water inlet pipe 601 is connected to cold water, such as tap water, etc. Cold water continuously flows in the condensation plate 602, and the water vapor in the conveying elbow 5 condenses into water droplets on the condensation plate 602 and drips into the water collecting box 501 for collection, and at the same time, the condensation plate 602 covered with water droplets can adsorb dust in the exhaust gas, thereby realizing preliminary filtration of the exhaust gas, and the exhaust gas is finally transported to the terminal exhaust gas treatment device for exhaust gas treatment.

[0045] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A smoke and dust collection device for a reciprocating steel rolling mill, comprising a dust hood and a dust extraction pipe, characterized in that: The dust suction hood is formed by hingedly connecting two hood bodies, and the hood body includes an outer hood and an inner hood. The two outer hoods are connected by a rotating shaft, and an ear plate is provided at the upper end of each outer hood. A hydraulic cylinder is hinged between the ear plates of the two outer hoods, and the outer hood is connected to the inner hood on all sides, and a cavity is provided between the outer hood and the inner hood. Dust suction holes are evenly provided on the inner hood, and the interior of the inner hood is divided into multiple dust suction chambers by multiple partitions. A guide groove is provided on the side wall of the inner hood, and an inner baffle is provided in the cavity, and the inner baffle is connected to the baffle through a pull plate. The baffles in the two hood bodies are respectively recorded as a first outer baffle and a second outer baffle, and the first outer baffle is provided with an arc-shaped connecting hole, and the side wall of the second outer baffle is provided with a connecting column that slides with the connecting hole. The lower end of the dust extraction pipe is connected with an averaging pipe, and the The equalizing pipe is connected with a pull pipe corresponding to the number of dust suction chambers, and the upper end of the outer cover is provided with an air outlet, and the air outlet is connected with an arc-shaped suction pipe slidably connected to the pull pipe, each dust suction chamber corresponds to a suction pipe, and the side wall of the pull pipe is provided with a plug plate for adjusting the air volume; a guide rod is provided in the inner cover, and a sliding hole matching the guide rod is provided on the partition, the partitions at both ends of the cover body are fixedly connected to the guide rod and the cover body, and the remaining partitions are slidably matched with the guide rod, and a fixing mechanism for fixing the partition is provided on the guide rod, and the fixing mechanism includes a positioning plate and a positioning bolt, a guide hole is provided on the guide rod, and positioning plates are provided on both sides of the guide rod, and the two positioning plates are connected by a slider, and the slider matches the guide hole, and a clamping plate is provided on the side wall of the positioning plate, and the two clamping plates are connected by a positioning bolt.

2. A reciprocating steel rolling mill smoke and dust collection device as claimed in claim 1, characterized in that: Sealing plates are provided at both ends of one of the covers, and the width of the sealing plates is greater than the width of the cover.

3. A reciprocating steel rolling mill smoke and dust collection device as claimed in claim 1, characterized in that: The interior of the equalizing pipe is divided into a plurality of flow channels by an equalizing plate, each flow channel is connected with a pull tube, a support plate is provided on the side wall of the pull tube, and a locking bolt for fixing the plug plate is provided on the support plate.

4. A reciprocating steel rolling mill smoke and dust collection device as claimed in claim 1, characterized in that: The upper end of the dust extraction pipe is connected with a delivery elbow pipe, a condensing device is arranged in the delivery elbow pipe, the bottom of the delivery elbow pipe is connected with a water collecting box, and a drainage pipe is arranged on the water collecting box.

5. A reciprocating steel rolling mill smoke and dust collection device as claimed in claim 4, characterized in that: The condensing device comprises a plurality of condensing plates, the interior of each condensing plate is a cavity structure, air holes are arranged on the condensing plates, the plurality of condensing plates are connected by connecting pipes, and the two ends of the condensing device are respectively connected with a water inlet pipe and a water outlet pipe.

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