Rolling line demisting backflow device

Abstract

The utility model discloses a demisting and reflowing device for a rolling line. The demisting and reflowing device comprises an air suction cover, a fan assembly, a suction pipeline, a demister and a reflowing pipe, a horn-mouth-shaped air suction cover is horizontally erected at the position, where a large amount of water mist is formed, of an inlet and outlet of the rolling mill, the lower end of the air suction cover is a large-diameter end, the upper end of the air suction cover is communicated with one end of the suction pipeline in a sealed mode, and the other end of the suction pipeline and one end of the backflow pipe are both communicated with the lower end of the vertically-arranged demister in a sealed mode. The other end of the return pipe extends to the slag sluice; a draught fan assembly is further arranged in the air suction cover, on-site mist is sucked away through the draught fan assembly and sent into the demister to be subjected to gas-liquid separation, and formed liquid drops flow into the backflow pipe due to gravity and flow back to the slag flushing trough through the backflow pipe to be recycled. According to the demister, water mist generated on site can be effectively removed, liquid drops collected by the demister can flow back to the slag sluice, and the consumption of circulating water is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of steelmaking, in particular to a rolling line demisting reflux device. Background Art

[0002] At present, circulating water is generally used as roller cooling water for bar rolling. However, when the temperature is low in winter, especially in the northern region, a large amount of water vapor will be generated when the cooling water comes into contact with high temperature. When the water vapor is cooled and liquefied, a large amount of water mist will be formed, which will seriously affect the line of sight and endanger the safety of the site. In addition, the evaporation of a large amount of circulating water will also increase the water consumption. Therefore, the above problems need to be solved urgently. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a rolling line defogger and reflux device, which can not only effectively remove the water mist generated on site, avoid the water mist affecting the line of sight and reduce safety hazards, but also the droplets collected by the defogger can flow back to the slag flushing ditch, reducing the consumption of circulating water and reducing costs.

[0004] In order to solve the above technical problems, the utility model adopts the following technical scheme: a rolling line defogger reflux device of the utility model, its innovation lies in: comprising an air suction hood, a fan assembly, an intake pipe, a demister and a return pipe; a trumpet-shaped air suction hood is horizontally arranged at the position where a large amount of water mist is formed at the inlet and outlet of the rolling mill, the lower end of the air suction hood is a large-diameter end, and its upper end is sealed and connected with one end of the intake pipe, the other end of the intake pipe and one end of the return pipe are both sealed and connected with the lower end of the vertically arranged demister, and the other end of the return pipe extends to the slag flushing ditch; a fan assembly is also arranged in the air suction hood, and the on-site fog is sucked away by the fan assembly and sent to the demister for gas-liquid separation, and the formed droplets flow into the return pipe due to gravity, and flow back to the slag flushing ditch through the return pipe, and then recycled.

[0005] Preferably, it also includes a supporting bracket; the suction pipe and the return pipe are supported and fixed by the supporting bracket respectively, and it is necessary to ensure that the suction pipe and the return pipe do not interfere with the operation of the rolling mill.

[0006] Preferably, a plurality of matching corrugated plates are arranged horizontally and in parallel in sequence at a lower inner position of the demister, and each of the corrugated plates is arranged vertically to form a first gas-liquid separation layer, and then the mist is gathered into droplets through the inertial collision with the corrugated plates, and the droplets flow into the reflux pipe due to gravity.

[0007] Preferably, it also includes several curved baffles; a second gas-liquid separation layer matching the demister is also provided at the upper inner position of the demister, and the second gas-liquid separation layer adopts several curved baffles arranged horizontally and parallelly in sequence at intervals, and forms several vertically arranged curved flow channels, thereby performing secondary gas-liquid separation on the mist treated by the corrugated plate.

[0008] Preferably, each of the curved baffles is a vertically arranged V-shaped structure, and both ends thereof are arranged up and down.

[0009] Preferably, a plurality of hook-shaped liquid collecting grooves are sequentially arranged at intervals on both sides of each of the curved baffles, and each of the hook-shaped liquid collecting grooves is integrally formed with the corresponding curved baffle; the mist treated by the corrugated plate flows from bottom to top through the curved flow channel, collides with the corresponding curved baffle, and generates air flow vortex at the corresponding hook-shaped liquid collecting groove to perform gas-liquid separation.

[0010] Preferably, the fan assembly includes side panels, a first motor, a screw, a guide rail, a slider, a second motor, a rotating shaft, a fan blade and a fixing rod; side panels are vertically symmetrically arranged at left and right intervals in the air suction hood, and the two side panels are vertically and longitudinally symmetrically arranged; fixing rods are horizontally arranged at upper and lower intervals between the outer surface of each side panel and the corresponding inner side surface of the air suction hood, and the corresponding side panels are reinforced and fixed by the fixing rods; a screw is horizontally and transversely arranged in the middle position between the two side panels, and the two ends of the screw are respectively rotatably connected to the corresponding side panels, and the right end thereof extends horizontally and vertically to the right to the corresponding side panel, and is linked to the output end of the first motor; the first motor is horizontally and transversely arranged between the right inner side surface of the air suction hood and the corresponding side panel, and is screwed and fixed to the corresponding side panel; in the Guide rails are provided horizontally symmetrically and parallelly on the upper and lower sides of the screw rod relative to the two side plates, and the two ends of each guide rail are respectively screwed and fixed to the corresponding side plates; a slider is also sleeved on the screw rod, and the slider is vertically arranged between the two side plates, screwed to the screw rod, and horizontally and laterally slidably connected to each guide rail; the slider and the suction hood are arranged without interfering with each other, and a second motor is also vertically fixed on its upper surface, and the output end of the second motor is arranged vertically upward, and is coaxially linked to the lower end of the vertically arranged rotating shaft, and a number of fan blades are also horizontally evenly distributed and spaced along the circumferential direction of the upper end of the rotating shaft, each of the fan blades is linked to the second motor through the rotating shaft, and are respectively arranged without interfering with the suction hood, and then the on-site fog is sucked away by the fan blades and sent to the defogger.

[0011] Preferably, a filter screen matching the fan assembly is horizontally disposed in the air suction hood relative to the bottom of the fan assembly, and the filter screen does not interfere with the horizontal lateral movement of the slider.

[0012] Beneficial effects of the utility model:

[0013] (1) The utility model can not only effectively remove the water mist generated on site, avoid the water mist affecting the line of sight and reduce the potential safety hazard, but also the droplets collected by the demister can flow back to the slag flushing ditch, reducing the consumption of circulating water and reducing costs;

[0014] (2) The curved baffle of the utility model generally adopts a curved streamline shape, with a short flow channel and a small flow resistance; and the hook-shaped liquid collecting groove is provided to fully absorb the water in the mist, thereby further realizing gas-liquid separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 The utility model is a structural schematic diagram of a rolling line demisting reflux device.

[0017] Figure 2 for Figure 1 Schematic diagram of the structure of the blower assembly.

[0018] Figure 3 for Figure 1 Schematic diagram of the mid-surface flow channel.

[0019] Among them, 1-air suction hood; 2-fan assembly; 3-suction pipe; 4-demister; 5-corrugated plate; 6-curved baffle; 7-hook-shaped liquid collecting tank; 8-reflux pipe; 9-support bracket; 10-filter; 21-side plate; 22-first motor; 23-screw rod; 24-guide rail; 25-slider; 26-second motor; 27-rotating shaft; 28-fan blade; 29-fixing rod. DETAILED DESCRIPTION

[0020] The technical solution of the utility model will be clearly and completely described below through specific implementation methods.

[0021] The utility model discloses a rolling line demisting and reflux device, comprising a suction hood 1, a fan assembly 2, an intake pipe 3, a demisting device 4 and a reflux pipe 8; the specific structure is as follows Figures 1 to 3As shown, a trumpet-shaped suction hood 1 is horizontally installed at the position where a large amount of water mist is formed at the inlet and outlet of the rolling mill, the lower end of the suction hood 1 is a large-diameter end, and the upper end thereof is sealed and connected with one end of a suction pipe 3, the other end of the suction pipe 3 and one end of a return pipe 8 are sealed and connected with the lower end of a vertically arranged demister 4, and the other end of the return pipe 8 extends to the slag flushing ditch; wherein, the suction pipe 3 and the return pipe 8 are respectively supported and fixed by support brackets 9, and it is necessary to ensure that the suction pipe 3 and the return pipe 8 do not interfere with the operation of the rolling mill.

[0022] The utility model also has a fan assembly 2 in the air suction hood 1, and the fan assembly 2 sucks the on-site fog away and sends it to the demister 4 for gas-liquid separation. The formed droplets flow into the return pipe 8 due to gravity, and return to the slag flushing ditch through the return pipe 8, and then are recycled; Figure 1 , Figure 3 As shown, a number of matching corrugated plates 5 are arranged horizontally and in parallel in sequence at the lower inner position of the demister 4, and each corrugated plate 5 is arranged vertically to form a first gas-liquid separation layer, and then the mist is gathered into droplets through the inertial collision with the corrugated plates 5, and the droplets flow into the reflux pipe 8 due to gravity.

[0023] like Figure 1 , Figure 3 As shown, a second gas-liquid separation layer matching the demister 4 is provided at an upper inner position thereof, and the second gas-liquid separation layer adopts a plurality of curved baffles 6 which are arranged horizontally and in parallel in sequence at intervals, and form a plurality of vertically arranged curved flow channels, thereby performing secondary gas-liquid separation on the mist treated by the corrugated plate 5; wherein each curved baffle 6 is a vertically arranged V-shaped structure, and its two ends are arranged up and down.

[0024] like Figure 1 , Figure 3 As shown, a number of hook-shaped liquid collecting grooves 7 are sequentially arranged on both sides of each curved baffle 6, and each hook-shaped liquid collecting groove 7 is integrally formed with the corresponding curved baffle 6; in the utility model, the mist treated by the corrugated plate 5 flows from bottom to top through the curved flow channel, collides with the corresponding curved baffle 6, and generates air flow vortex at the corresponding hook-shaped liquid collecting groove 7 to separate gas and liquid.

[0025] The fan assembly 2 of the utility model includes a side plate 21, a first motor 22, a screw rod 23, a guide rail 24, a slider 25, a second motor 26, a rotating shaft 27, a fan blade 28 and a fixing rod 29; Figure 1 , Figure 2As shown, side panels 21 are vertically symmetrically arranged at intervals on the left and right inside the air suction hood 1, and the two side panels 21 are vertically and longitudinally symmetrically arranged; fixing rods 29 are horizontally arranged at intervals on the upper and lower sides between the outer surface of each side panel 21 and the corresponding inner side surface of the air suction hood 1, and the corresponding side panel 21 is reinforced and fixed by the fixing rods 29; a screw rod 23 is horizontally and transversely arranged in the middle position between the two side panels 21, and the two ends of the screw rod 23 are respectively rotatably connected to the corresponding side panels 21, and the right end thereof extends horizontally and vertically to the right out of the corresponding side panel 21, and is linked to the output end of the first motor 22; the first motor 22 is horizontally and transversely arranged between the right inner side surface of the air suction hood 1 and the corresponding side panel 21, and is screwed and fixed to the corresponding side panel 21;

[0026] like Figure 1 , Figure 2 As shown, guide rails 24 are horizontally symmetrically and parallelly arranged at intervals between the upper and lower sides of the screw rod 23 relative to the two side plates 21, and the two ends of each guide rail 24 are respectively screwed and fixed to the corresponding side plates 21; a slider 25 is also sleeved on the screw rod 23, the slider 25 is vertically arranged between the two side plates 21, and is screwed to the screw rod 23, and is respectively horizontally and laterally slidably connected to each guide rail 24; the slider 25 and the suction hood 1 are arranged without interfering with each other, and a second motor 26 is also vertically fixed on its upper surface, the output end of the second motor 26 is arranged vertically upward, and is coaxially linked to the lower end of the vertically arranged rotating shaft 27, and a number of fan blades 28 are also horizontally evenly distributed and spaced along the circumferential direction of the upper end of the rotating shaft 27, each fan blade 28 is linked to the second motor 26 through the rotating shaft 27, and is respectively arranged without interfering with the suction hood 1, and then the on-site fog is sucked away by the fan blades 28 and sent to the defogger 4. The utility model can suck the mist on site into the defogger 4 through the fan blades 28 under the drive of the second motor 26, and the fan blades 28 can make horizontal reciprocating motion with the slider 25 under the drive of the first motor 22, thereby increasing the working range of the fan blades 28 and achieving a better effect of sucking away the water mist.

[0027] like Figure 1 , Figure 2 As shown, a filter screen 10 matching with the fan assembly 2 is horizontally arranged in the air suction hood 1 directly below the fan assembly 2 , and the filter screen 10 does not interfere with the horizontal lateral movement of the slider 25 .

[0028] The working principle of the utility model is as follows: the fan assembly 2 sucks the on-site fog and sends it to the demister 4, where it first collides with the inertia of the corrugated plate 5 to gather into droplets, and the droplets flow into the return pipe 8 due to gravity; then, secondary gas-liquid separation is carried out through the cooperation of the curved baffle plate 6 and the hook-shaped liquid collecting groove 7; then the droplets in the return pipe 8 flow back to the slag flushing ditch, thereby realizing recycling.

[0029] Beneficial effects of the utility model:

[0030] (1) The utility model can not only effectively remove the water mist generated on site, avoid the water mist affecting the line of sight, and reduce the potential safety hazards, but also the droplets collected by the demister 4 can flow back to the slag flushing ditch, reducing the consumption of circulating water and reducing costs;

[0031] (2) The curved baffle 6 of the utility model generally adopts a curved streamline shape, with a short flow channel and a small flow resistance; and the hook-shaped liquid collecting groove 7 is provided to fully absorb the water in the mist, thereby further realizing gas-liquid separation.

[0032] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field should fall within the protection scope of the present invention. The technical contents for which protection is sought in the present invention have been fully recorded in the technical requirements.

Claims

1. A rolling line demisting reflux device, characterized in that: It includes an air suction hood, a fan assembly, an intake pipe, a demister and a return pipe; a trumpet-shaped air suction hood is horizontally installed at the position where a large amount of water mist is formed at the inlet and outlet of the rolling mill, the lower end of the air suction hood is a large-diameter end, and its upper end is sealed and connected with one end of the intake pipe, the other end of the intake pipe and one end of the return pipe are both sealed and connected with the lower end of the vertically arranged demister, and the other end of the return pipe extends to the slag flushing ditch; a fan assembly is also arranged in the air suction hood, and the on-site fog is sucked away by the fan assembly and sent to the demister for gas-liquid separation, and the formed droplets flow into the return pipe due to gravity, and flow back to the slag flushing ditch through the return pipe, and then recycled.

2. A rolling line demisting reflux device according to claim 1, characterized in that: It also includes a supporting bracket; the suction pipe and the return pipe are supported and fixed by the supporting bracket respectively, and it is necessary to ensure that the suction pipe and the return pipe do not interfere with the operation of the rolling mill.

3. A rolling line demisting reflux device according to claim 1, characterized in that: A number of matching corrugated plates are arranged horizontally and in parallel in sequence at a lower inner position of the demister, and each of the corrugated plates is arranged vertically to form a first gas-liquid separation layer, and then the mist is gathered into droplets through the inertial collision with the corrugated plates, and the droplets flow into the reflux pipe due to gravity.

4. A rolling line demisting reflux device according to claim 3, characterized in that: It also includes several curved baffles; a second gas-liquid separation layer matching the demister is also provided at the upper inner position of the demister, and the second gas-liquid separation layer adopts several curved baffles arranged horizontally and parallelly in sequence, and forms several vertically arranged curved flow channels, thereby performing secondary gas-liquid separation on the mist treated by the corrugated plate.

5. A rolling line demisting reflux device according to claim 4, characterized in that: Each of the curved baffles is a vertically arranged V-shaped structure, and both ends thereof are arranged up and down.

6. A rolling line demisting reflux device according to claim 5, characterized in that: A number of hook-shaped liquid collecting grooves are arranged in sequence on both sides of each of the curved baffles, and each of the hook-shaped liquid collecting grooves is integrally formed with the corresponding curved baffle. The mist treated by the corrugated plate flows from bottom to top through the curved flow channel, collides with the corresponding curved baffle, and generates airflow vortex at the corresponding hook-shaped liquid collecting groove to separate gas and liquid.

7. A rolling line demisting reflux device according to claim 1, characterized in that: The fan assembly comprises side panels, a first motor, a screw rod, a guide rail, a slider, a second motor, a rotating shaft, a fan blade and a fixing rod; side panels are vertically symmetrically arranged at left and right intervals in the air suction hood, and the two side panels are vertically and longitudinally symmetrically arranged; fixing rods are horizontally arranged at upper and lower intervals between the outer surface of each side panel and the corresponding inner side surface of the air suction hood, and the corresponding side panels are reinforced and fixed by the fixing rods; a screw rod is also horizontally and transversely arranged in the middle position between the two side panels, and the two ends of the screw rod are respectively rotatably connected to the corresponding side panels, and the right end thereof extends horizontally and vertically to the right to the corresponding side panel, and is linked to the output end of the first motor; the first motor is horizontally and transversely arranged between the right inner side surface of the air suction hood and the corresponding side panel, and is screwed and fixed to the corresponding side panel; at the middle position of the screw rod Guide rails are also horizontally symmetrically and parallelly arranged at intervals between the two side panels on the upper and lower sides, and the two ends of each guide rail are respectively screwed and fixed to the corresponding side panels; a slider is also sleeved on the screw rod, and the slider is vertically arranged between the two side panels, screwed to the screw rod, and horizontally and laterally slidably connected to each guide rail; the slider and the suction hood are arranged without interfering with each other, and a second motor is also vertically fixed on its upper surface, and the output end of the second motor is arranged vertically upward, and is coaxially linked to the lower end of the vertically arranged rotating shaft, and a number of fan blades are also horizontally evenly distributed and spaced along the circumferential direction of the upper end of the rotating shaft, and each of the fan blades is linked to the second motor through the rotating shaft, and are respectively arranged without interfering with the suction hood, so that the on-site fog is sucked away by the fan blades and sent to the defogger.

8. A rolling line demisting reflux device according to claim 7, characterized in that: A filter screen matching the fan assembly is also horizontally arranged in the air suction hood relative to the lower part of the fan assembly, and the filter screen does not interfere with the horizontal lateral movement of the slider.

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