Cleaning device for filter screen of blast furnace Panbar drum

Abstract

A main box body of the cleaning device comprises an upper-layer box body and a lower-layer box body, the lower-layer box body comprises a pump set box and a water storage box which are divided left and right, the upper-layer box body is used for placing the drum filter screen to be cleaned, and a sliding rail is arranged on the upper edge of the upper-layer box body. The sliding table can reciprocate on the sliding rail, and a plurality of cleaning nozzles are fixed to the bottom face of the sliding table, so that the drum filter screen located in the upper-layer box body is subjected to water spraying cleaning. The multiple cleaning nozzles can cover the whole drum filter screen for cleaning in the width direction at a time and move while cleaning one end of the filter screen, operation is easy, covering is comprehensive, the cleaning speed is high, only the filter screen needs to be manually placed and replaced, and the labor efficiency and the safety coefficient are greatly improved. In addition, waste water after cleaning flows into the water storage tank and is filtered to reach the recycling standard to be recycled again, the cost is reduced, and sewage discharge is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water washing and cleaning, in particular to a cleaning device for a blast furnace Inba drum filter. Background Art

[0002] Blast furnace ironmaking plants use the Inba process. Slag enters the drum's distributor in the filtration area and is evenly distributed across the drum's baffles. When the drum rotates 180 degrees, it pours onto the discharge conveyor inside the drum. The discharge conveyor then transports the slag to the transfer conveyor and into the finished product tank. During this stage, the drum filter screen is directly impacted by the slag. Excessive slag content can cause the screen to clog. Long-term, extensive clogging can lead to compaction, rendering the screen incapable of functioning and requiring replacement.

[0003] The existing filter screen cleaning process involves maintenance personnel using a handheld high-pressure water gun to flush the entire drum while the equipment is running. This method has drawbacks: 1. Working near running equipment is dangerous. 2. The screen is not thoroughly flushed, and water residue can easily adhere to the screen during subsequent operation, forming a compacted surface. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the utility model provides a cleaning device for a blast furnace IMBA drum filter, the cleaning device comprising a main box, the main box comprising an upper box and a lower box, the lower box comprising a pump group box and a water storage tank divided into left and right parts, the pump group box and the upper box being separated by a watertight partition, and the water storage tank and the upper box being separated by a water tank filter;

[0005] The upper box is used to place the drum filter to be cleaned. The upper edge of the upper box is provided with a slide rail along the first direction. The slide arranged along the second direction can reciprocate along the first direction on the slide rail, and the first direction is perpendicular to the second direction; the bottom surface of the slide is fixed with multiple cleaning nozzles arranged along the second direction, so as to spray water to clean the drum filter located in the upper box.

[0006] Optionally, at least three fixing frames are provided on the inner wall of the upper box body, and the fixing frames include a support arm and a clamping block. The horizontally arranged support arm faces the inner cavity of the upper box body, and the clamping block is correspondingly located above the support arm. The edge of the drum filter is mounted on the support arm, and then the drum filter is clamped by a bolt passing through the clamping block.

[0007] Optionally, the watertight baffle is in an inclined state to collect the waste water after flushing to the water tank filter, and the flushing water flows into the water storage tank after being filtered by the water tank filter.

[0008] Optionally, the pump group box is provided with a booster pump, a filter, a high-pressure pump group, and a safety valve. The booster pump pumps the water in the water tank into the filter, and the filtered clean water enters the cleaning nozzle through the high-pressure pump group and the safety valve.

[0009] Optionally, the high-pressure pump group is driven by a first motor, and the first motor is transmission-connected to the high-pressure pump group via an elastic pin coupling.

[0010] Optionally, the pump assembly box is further provided with a control unit for controlling the operation of various electrical devices in the pump assembly box.

[0011] Optionally, the safety valve is connected to a fixed spray bar fixed to the bottom surface of the slide via a high-pressure hose, and the fixed spray bar is provided with a plurality of openings for mounting the cleaning nozzle.

[0012] Optionally, the high-pressure hose is connected to the fixed spray boom through a drag chain located on one side of the slide rail.

[0013] Optionally, a second motor is fixed to the top surface of the slide, and the second motor is used to drive the slide to reciprocate along the second direction.

[0014] Optionally, two parallel slide rails are provided on the upper edge of the upper box body, and the cross-section of the slide rails is an inverted V shape.

[0015] As described above, the utility model provides a cleaning device for a blast furnace Inba drum filter, wherein the main housing of the cleaning device comprises an upper housing and a lower housing, wherein the lower housing comprises a pump group box and a water storage tank divided into left and right sections, and the upper housing is used to place the drum filter to be cleaned, and a slide rail is provided on the upper edge of the upper housing, and the slide can reciprocate on the slide rail, and a plurality of cleaning nozzles are fixed to the bottom surface of the slide, thereby spraying water to clean the drum filter located in the upper housing. The plurality of cleaning nozzles can cover the entire drum filter in the width direction at one time, and can move while cleaning from one end of the filter. The operation is simple, the coverage is comprehensive, and the cleaning speed is fast. Manual operation only requires the placement and replacement of the filter, which greatly improves labor efficiency and safety factor. In addition, the wastewater after cleaning flows into the water storage tank, and after filtration, it meets the recycling standards and is recycled again, thereby reducing costs and reducing sewage discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a side structural schematic diagram of the cleaning device in Example 1 of the present utility model.

[0017] Figure 2 Shown is a front view structural schematic diagram of the cleaning device in Example 1 of the present utility model.

[0018] Figure 3 Shown is a schematic structural diagram of the fixing bracket in the first embodiment of the present invention.

[0019] Figure 4 Shown is a side view structural diagram of the various electrical equipment in the pump group box in Example 1 of the present utility model.

[0020] Figure 5 Shown is a side structural schematic diagram of the drag chain and slide in Example 1 of the present utility model.

[0021] Figure 6 Shown is a schematic top view of the structure of the various electrical equipment in the pump group box in Example 1 of the present utility model.

[0022] Figure 7 Shown is a schematic top view of the structure of the drag chain and the slide in the first embodiment of the present invention.

[0023] Component number description

[0024] Upper housing 11; lower housing 12; water tank filter 13; drum filter 14; slide 15; fixed frame 16; watertight bulkhead 17; control unit 21; booster pump 22; filter 23; high-pressure pump unit 24; safety valve 25; high-pressure hose 26; drag chain 27; first motor 28; elastic pin coupling 29; second motor 31; transmission belt 32; driven pulley 33; slide rail 34; travel switch 35; cleaning nozzle 36; fixed spray rod 37; support arm 41; pressing block 42. DETAILED DESCRIPTION

[0025] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention.

[0026] It should be noted that the illustrations provided in this embodiment are only used to schematically illustrate the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0027] Example 1

[0028] like Figures 1 to 3 As shown, this embodiment provides a cleaning device for a blast furnace IMBA drum filter, comprising:

[0029] The main box includes an upper box 11 and a lower box 12. The lower box 12 includes a pump group box and a water storage tank divided into left and right parts. The pump group box is separated from the upper box 11 by a watertight partition 17, and the water storage tank is separated from the upper box by a water tank filter 13.

[0030] The upper box body 11 is used to place the drum filter 14 to be cleaned. The upper edge of the upper box body 11 is provided with a slide rail 34 along the first direction. The slide 15 provided along the second direction can reciprocate along the first direction on the slide rail 34, and the first direction is perpendicular to the second direction; the bottom surface of the slide 15 is fixed with a plurality of cleaning nozzles 36 arranged along the second direction, so as to spray water to clean the drum filter 14 located in the upper box body 11.

[0031] Furthermore, the inner wall of the upper housing 11 is provided with at least three fixing brackets 16. The fixing brackets 16 include supporting arms 41 and pressing blocks 42. The horizontally arranged supporting arms face the inner cavity of the upper housing 11, and the pressing blocks 42 are correspondingly positioned above the supporting arms 41. The edges of the rotary drum filter 14 are mounted on the supporting arms and then compressed by bolts passing through the pressing blocks 42. The number of the fixing brackets is at least three to ensure stability. In practice, the number of fixing brackets can also be set to four, six, etc., and this is not excessively limited here.

[0032] Furthermore, the watertight partition 17 is in an inclined state to collect the waste water after flushing to the water tank filter 13, and the filtered water after filtering by the water tank filter 13 flows into the water storage tank. The water storage tank is also provided with a sewage outlet to discharge the sewage settled at the bottom.

[0033] Furthermore, if Figures 4 to 7 As shown, the pump assembly box is equipped with a booster pump 22, a filter 23, a high-pressure pump assembly 24, and a safety valve 25. The booster pump 22 pumps water from the water tank into the filter 23. The filtered clean water enters the cleaning nozzle 36 through the high-pressure pump assembly 24 and the safety valve 25. Because the impact force of the water spraying onto the filter surface is greater than the adhesion of the oxides / water residue on the filter surface, the oxides / water residue are peeled off the filter surface, achieving a cleaning effect. The pressure of the high-pressure pump assembly determines the impact force during filter cleaning. The required pressure needs to be determined based on the adhesion of the dirt on the filter surface and the material of the dirt. The cleaning efficiency also needs to be considered. If the speed requirement is high, the pressure can be appropriately increased. The flow rate of the high-pressure pump determines the number of nozzles designed and the cleaning width. The greater the flow rate, the more nozzles it can drive, making the cleaning width wider.

[0034] Furthermore, the safety valve 25 is connected to a fixed spray bar 37 secured to the bottom surface of the slide 15 via a high-pressure hose 26. The high-pressure hose 26 extends through a drag chain 27 located on one side of the slide rail 34 and connects to the fixed spray bar 37 to accommodate movement of the slide 15 in the second direction. The fixed spray bar 37 has multiple openings for mounting cleaning nozzles 36. These multiple cleaning nozzles can clean the entire width of the drum filter at once. The nozzles are set to automatically clean the entire filter screen while moving from one end. This fully covers the entire filter screen, making operation simpler and faster.

[0035] Furthermore, the high-pressure pump group 24 is driven by a first motor 28 , and the first motor 28 is transmission-connected to the high-pressure pump group 24 via an elastic pin coupling 29 .

[0036] Furthermore, a second motor 31 is fixed to the top surface of the slide 15 , and the second motor 31 is used to drive the slide 15 to reciprocate along the second direction.

[0037] Furthermore, two mutually parallel slide rails 34 are provided on the upper edge of the upper box body 11 , and the cross section of the slide rail 34 is an inverted V-shape to ensure sufficient rigidity and wear resistance.

[0038] A second motor 31 is fixed to one end of the slide, and a driven wheel 33 is fixed to the other end. The second motor 31 and the driven wheel 33 are connected by a transmission belt 32 to achieve synchronous movement of the two ends of the slide on the slide rail. A travel switch 35 is also fixed to the upper edge of the upper box 11 to control the operation of the slide.

[0039] Furthermore, the pump group box is also provided with a control unit 21 for controlling the operation of each electrical device in the pump group box. The control unit can be controlled to start and stop by remote control or on-site buttons. During operation, the filter is manually placed in the cleaning area, and then the equipment and cleaning device are turned on to realize the cleaning operation; after a group of filters are cleaned, the nozzle is temporarily set to spray water, and the filter is replaced and then restarted to continue cleaning; manual operation only requires the placement and replacement of the filter, which is intelligent, safe and reliable, with uniform cleaning speed and comprehensive coverage. In addition, the water circulation system is fully utilized, and a water / sewage sedimentation tank and a filtration system are provided. After filtration, the water meets the recycling standards and is recycled again, thereby reducing costs and reducing sewage discharge.

[0040] Currently, the cleaning device is being used in a drum filter screen cleaning project. One drum screen contains approximately 84 screens. Using the new process, two people complete the cleaning in two hours. This compares to the previous manual process, which required two people and seven hours to complete the task. The new process significantly improves labor efficiency and safety.

[0041] Before cleaning equipment applications:

[0042] Frequency of drum filter replacement: once every six months, of which 70% are replaced due to compaction problems. Each drum has 84 pieces of filter screens. Wuhan Iron and Steel's blast furnace equipment currently has 6 drums, and 504 filter screens need to be replaced at a time. The cost of each filter screen is 1,750 yuan.

[0043] The total replacement cost for the whole year is: 504*1750*2=1.764 million yuan. The cost of replacing due to hardening is: 176.4*70%=1.2348 million yuan.

[0044] After cleaning equipment application:

[0045] Drum filter screen replacement frequency: Every six months, with 70% of replacements due to compaction. Each drum has 84 screens. Wuhan Iron and Steel's blast furnaces currently have six drums, and a total of 504 screens need to be replaced at a time, costing 1,750 yuan per screen. After the screen cleaning device is put into operation, 80% of the compacted screens can be recycled.

[0046] The total replacement cost for the whole year is: 504*1750*2=1.764 million yuan.

[0047] The cost savings from filter cleaning and recycling each year is: (176.4*70%)*80%=987,800 yuan.

[0048] In summary, the utility model provides a cleaning device for a blast furnace Inba drum filter, wherein the main housing of the cleaning device comprises an upper housing and a lower housing, wherein the lower housing comprises a pump group box and a water storage tank divided into left and right sections, and the upper housing is used to place the drum filter to be cleaned, and a slide rail is provided on the upper edge of the upper housing, and the slide can reciprocate on the slide rail, and a plurality of cleaning nozzles are fixed on the bottom surface of the slide, thereby spraying water to clean the drum filter located in the upper housing. The plurality of cleaning nozzles can cover the entire drum filter in the width direction at one time, and can move while cleaning from one end of the filter. The operation is simple, the coverage is comprehensive, and the cleaning speed is fast. Manual operation only requires the placement and replacement of the filter, which greatly improves labor efficiency and safety factor. In addition, the wastewater after cleaning flows into the water storage tank, and after filtration, it meets the recycling standards and is recycled again, thereby reducing costs and reducing sewage discharge.

[0049] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A cleaning device for a blast furnace IMBA drum filter, characterized in that: The cleaning device includes a main box body, the main box body includes an upper box body and a lower box body, the lower box body includes a pump group box and a water storage tank divided into left and right parts, the pump group box and the upper box body are separated by a watertight partition, and the water storage tank and the upper box body are separated by a water tank filter; The upper box is used to place the drum filter to be cleaned. The upper edge of the upper box is provided with a slide rail along the first direction. The slide arranged along the second direction can reciprocate along the first direction on the slide rail, and the first direction is perpendicular to the second direction; the bottom surface of the slide is fixed with multiple cleaning nozzles arranged along the second direction, so as to spray water to clean the drum filter located in the upper box.

2. The cleaning device according to claim 1, characterized in that: At least three fixing frames are provided on the inner wall of the upper box body, and the fixing frames include a supporting arm and a pressing block. The horizontally arranged supporting arm faces the inner cavity of the upper box body, and the pressing block is correspondingly located above the supporting arm. The edge of the drum filter is mounted on the supporting arm, and then the drum filter is pressed by a bolt passing through the pressing block.

3. The cleaning device according to claim 1, characterized in that: The watertight partition is in an inclined state to collect the waste water after flushing to the water tank filter screen, and the flushing water flows into the water storage tank after being filtered by the water tank filter screen.

4. The cleaning device according to claim 1, characterized in that: The pump group box is provided with a booster pump, a filter, a high-pressure pump group, and a safety valve. The booster pump pumps the water in the water tank into the filter, and the filtered clean water enters the cleaning nozzle through the high-pressure pump group and the safety valve.

5. The cleaning device according to claim 4, characterized in that: The high-pressure pump group is driven by a first motor, and the first motor is transmission-connected to the high-pressure pump group via an elastic pin coupling.

6. The cleaning device according to claim 4, characterized in that: The pump assembly box is also provided with a control unit for controlling the operation of various electrical equipment in the pump assembly box.

7. The cleaning device according to claim 1, characterized in that: The safety valve is connected to a fixed spray bar fixed to the bottom surface of the slide through a high-pressure hose. The fixed spray bar is provided with a plurality of openings for installing the cleaning nozzles.

8. The cleaning device according to claim 7, characterized in that: The high-pressure hose is connected to the fixed spray boom through a drag chain located on one side of the slide rail.

9. The cleaning device according to claim 1, characterized in that: A second motor is fixed to the top surface of the slide, and the second motor is used to drive the slide to reciprocate along the second direction.

10. The cleaning device according to claim 1, characterized in that: Two parallel slide rails are provided on the upper edge of the upper box body, and the cross section of the slide rails is an inverted V shape.

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