CN214516787U - Edge compensation device for shot blasting and descaling of hot-rolled strip steel and descaling system - Google Patents
Edge compensation device for shot blasting and descaling of hot-rolled strip steel and descaling system Download PDFInfo
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- CN214516787U CN214516787U CN202120419596.4U CN202120419596U CN214516787U CN 214516787 U CN214516787 U CN 214516787U CN 202120419596 U CN202120419596 U CN 202120419596U CN 214516787 U CN214516787 U CN 214516787U
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- descaling
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 50
- 239000010959 steel Substances 0.000 title claims abstract description 50
- 238000005422 blasting Methods 0.000 title claims abstract description 38
- 239000003082 abrasive agent Substances 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims description 21
- 230000008901 benefit Effects 0.000 abstract description 6
- 230000000295 complement effect Effects 0.000 abstract description 3
- 238000009826 distribution Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000005554 pickling Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 238000005098 hot rolling Methods 0.000 description 3
- 230000003116 impacting effect Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000006187 pill Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides an edge compensation device and a descaling system for shot blasting descaling of hot rolled strip steel, wherein the edge compensation device comprises an abrasive jet flow box, and a first jet flow frame and a second jet flow frame are arranged in the abrasive jet flow box at intervals; the first jet flow frame is provided with a plurality of first nozzles, the second jet flow frame is provided with a plurality of second nozzles, and the first nozzles and the second nozzles are connected with the abrasive material supply box through the abrasive material supply pipe; the first nozzles and the second nozzles are arranged in opposite directions, the first nozzles are distributed on two sides of the first jet flow frame, and the second nozzles are distributed on two sides of the second jet flow frame. According to the scheme, the shot blasting descaling device pretreats the scale layer on the surface of the strip steel, removes all the scale layer in the middle area, and leaves the residual scale layer in the edge area for the edge compensation device to remove, so that fine descaling is realized. The utility model discloses a throw ball descaling device and limit compensation arrangement cooperation branch worker, advantage complementary, effectively improved the efficiency of descaling.
Description
Technical Field
The utility model relates to the technical field of mechanical equipment, especially indicate a limit portion compensation arrangement and descaling system that is used for hot rolling belted steel to throw ball descaling.
Background
The removal of the surface scale layer of the hot-rolled strip steel before the subsequent processes of cold rolling, hot galvanizing or coating and the like is an indispensable link. The traditional strip steel descaling process is pickling, a large amount of acid liquor is needed, the discharge of three wastes is serious, the acid environment corrodes peripheral mechanical equipment and harms the health of workers, and the surface quality problems of over pickling, under pickling and the like often exist in pickling operation. Compared with the traditional pickling and shot blasting descaling technology, the method has the advantages of environmental friendliness, no pollution, small occupied area, strong controllability, flexible series combination production and the like, and has wide application prospect.
The shot blasting descaling mechanism is as follows: the thrust and centrifugal force of impeller of the shot blasting machine are used to accelerate the shots, so that the shots are continuously forced to the surface of the strip steel, and the brittle scale layer is broken and removed. The EPS acid-free descaling system put into production at present works by adopting a shot blasting descaling mechanism, and the main improvement is that the traditional shot materials are replaced by mixed slurry of steel grit and water.
However, shot blasting descaling and EPS descaling have low energy efficiency, and the processing cost of each ton of steel is far higher than that of pickling, so that the market competitiveness is poor. Among the many factors that contribute to energy inefficiency, two very important influencing factors are not considered in the design of existing descaling systems and are now explained.
1. The thickness distribution of the scale layer on the section of the strip steel is not uniform.
The existing research results and documents show that the oxygen supply capacity of the edge of the strip steel is far higher than that of the middle part in the processes of hot rolling, coiling and subsequent stacking and cooling, namely, the edge of the strip steel is more easily reacted with oxygen in the air to generate more scale layers, so that the thickness of the scale layers on the section of the strip steel is uneven, and the characteristic that the thickness of the edge is larger than that of the middle part is presented.
2. The shot material distribution on the scale layer of the section of the strip steel is not uniform.
The existing research results and documents show that the shot flow ejected by the shot blasting machine in an accelerating way is not uniformly distributed on the section of the strip steel, the shot obtained in the middle area is more, and the shot obtained in the edge area is less. The approximate distribution of the shot on the section of the strip is shown as a function y ═ f (x) curve in fig. 1. FIG. 1 illustrates the descaling of a strip on one side and the symmetry of the strip on the other side.
In summary, on the one hand, the scale layers on the strip edges are thicker, and on the other hand, the shot distribution on the strip edges is less, which results in that the scale layers in the middle of the strip are easily removed during the descaling process, while the edges are difficult to remove. Therefore, in the actual production, when the scale layer in the middle of a certain section of the strip steel is completely removed, the edge scale layer still has more residues.
In order to ensure the surface quality, the scale layer on the section of the strip steel needs to be cleaned, so that the condition of middle invalid striking inevitably occurs, which belongs to continuous energy waste and seriously influences the energy efficiency and market competitiveness of the descaling system.
If the upper surface and the lower surface of the strip steel are descaled, a plurality of impeller heads are adopted, and the shots obtained from different areas on the surface of the strip steel are in a composite mode, so that the nonuniformity of the shot distribution can be weakened, the total energy consumption of the system is increased, and the problem is not solved from the original source.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an edge compensation arrangement and descaling system for hot rolling belted steel is thrown ball and is descaled to solve the uneven thickness distribution on belted steel section scale layer that present ball blasting descaling system exists, the uneven problem that causes the energy waste of the continuation, the system efficiency is low of pill material distribution on the belted steel section scale layer.
In order to solve the technical problem, the utility model provides a following technical scheme:
an edge compensation device for shot blasting descaling of hot rolled strip steel comprises an abrasive jet flow box, wherein a first jet flow frame and a second jet flow frame are arranged in the abrasive jet flow box at intervals; the first jet flow frame is provided with a plurality of first nozzles, the second jet flow frame is provided with a plurality of second nozzles, and the first nozzles and the second nozzles are connected with the abrasive material supply box through abrasive material supply pipes; the first nozzles and the second nozzles are arranged in opposite directions, the first nozzles are distributed on two sides of the first jet flow frame, and the second nozzles are distributed on two sides of the second jet flow frame.
The number of the first nozzles is even, and the even first nozzles are symmetrically distributed on the first jet flow frame.
The second nozzles correspond to the first nozzles one to one.
The utility model also provides a descaling system, including throwing the ball descaling device, it includes the descaling case to throw the ball descaling device, the last relative first impeller head and the second impeller head that is provided with of descaling case, be provided with foretell limit portion compensation arrangement after throwing the ball descaling device.
The descaling system further comprises a control device, a first detection device is arranged between the shot blasting descaling device and the edge compensation device, the first detection device is electrically connected with the input end of the control device, and the output end of the control device is electrically connected with the first shot blasting machine and the second shot blasting machine respectively.
Furthermore, a second detection device is arranged behind the edge compensation device, the second detection device is electrically connected with the input end of the control device, and the output end of the control device is electrically connected with the first nozzle and the second nozzle respectively.
The utility model discloses an above-mentioned technical scheme's beneficial effect as follows:
according to the scheme, the shot blasting descaling device pretreats the scale layer on the surface of the strip steel, removes all the scale layer in the middle area, and leaves the residual scale layer in the edge area for the edge compensation device to remove, so that fine descaling is realized. The utility model discloses a throw ball descaling device and limit compensation arrangement cooperation branch worker, advantage complementary, effectively improved the efficiency of descaling.
Drawings
FIG. 1 is a schematic diagram of the distribution of shot materials ejected by an impeller head in an accelerating way on a section of strip steel;
FIG. 2 is a schematic view of the descaling system of the present invention;
fig. 3 is a schematic structural view of the edge compensating device of the present invention;
FIG. 4 is a schematic view of the detection signal collection of the descaling system of the present invention;
fig. 5 is a schematic diagram of the control signal of the descaling system according to the present invention.
[ reference numerals ]
1. A shot blasting descaling device; 101. a descaling box; 102. a first impeller; 103. a second impeller;
2. a first detection device;
3. an edge compensation device; 301. an abrasive jet box; 302. a first jet mount; 303. a second fluidic carriage; 304. an abrasive supply tube; 305. a first nozzle; 306. a second nozzle;
4. a second detection device;
5. and a control device.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 2 to 5, an embodiment of the present invention provides a descaling system, which includes a shot blasting descaling device 1 and an edge compensation device 3, wherein the shot blasting descaling device 1 is used to complete the preliminary descaling operation on the surface of the strip steel, and the edge compensation device 3 is used to complete the fine descaling operation on the surface of the strip steel.
As shown in fig. 2, the shot blasting descaling device 1 comprises a descaling box 101, and a first impeller 102 and a second impeller 103 are oppositely arranged on the descaling box 101, wherein the first impeller 102 is located above the strip steel and used for completing the pre-descaling operation of the upper surface of the strip steel, and the second impeller 103 is located below the strip steel and used for completing the pre-descaling operation of the lower surface of the strip steel.
As shown in fig. 3, the edge compensating device 3 includes an abrasive jet box 301, a first jet frame 302 and a second jet frame 303 are arranged in the abrasive jet box 301 at intervals, a plurality of first nozzles 305 are arranged on the first jet frame 302, a plurality of second nozzles 306 are arranged on the second jet frame 303, and the first nozzles 305 and the second nozzles 306 are connected to an abrasive supply box through an abrasive supply pipe 304.
The first nozzles 305 and the second nozzles 306 are arranged opposite to each other, as shown in fig. 3, the first nozzles 305 are distributed on two sides of the first jet flow frame 302, and the second nozzles 306 are distributed on two sides of the second jet flow frame 303, so that the spraying areas of the first nozzles 305 and the second nozzles 306 are ensured to be positioned at the edge of the strip steel.
Specifically, the first jet frame 302 is located above the strip steel, the second jet frame 303 is located below the strip steel, the first nozzle 305 is used for completing the descaling operation of the edge of the upper surface of the strip steel, and the second nozzle 306 is used for completing the descaling operation of the edge of the lower surface of the strip steel.
In this embodiment, the number of the first nozzles 305 is even, and the even number of the first nozzles 305 are symmetrically distributed on the first jet rack 302.
As shown in fig. 3, the second nozzles 306 correspond to the first nozzles 305 one to one.
As shown in fig. 4 and 5, the descaling system further includes a control device 5, a first detection device 2 is disposed between the shot blasting descaling device 1 and the edge compensation device 3, the first detection device 2 is electrically connected to an input end of the control device 5, and an output end of the control device 5 is electrically connected to the first impeller 102 and the second impeller 103, respectively.
The first detection device 2 detects the upper surface and the lower surface of the strip steel after the descaling operation of the shot blasting descaling device 1, and transmits the detection results to the control device 5, the control device 5 outputs electric signals to the first shot blasting machine 102 and the second shot blasting machine 103 respectively according to the detection results of the first detection device 2, and the first shot blasting machine 102 and the second shot blasting machine 103 can adjust the flow rate of shot material flow according to the electric signals output by the control device 5.
The specific adjusting method comprises the following steps:
when the descaling rate of the middle part of the surface of the strip steel is less than 100 percent, increasing the flow of the shot material flow impacting the corresponding surface;
when the descaling rate of the middle part of the surface of the strip steel is equal to 100 percent and the descaling rate of the edge part of the surface of the strip steel is equal to 100 percent, reducing the flow of the shot material flow impacting the corresponding surface;
when the descaling rate of the middle part of the surface of the strip steel is equal to 100 percent and the descaling rate of the edge part of the surface of the strip steel is less than 100 percent, the flow of the pill material flow impacting the corresponding surface is kept unchanged.
Further, a second detection device 4 is disposed behind the edge compensation device 3, the second detection device 4 is electrically connected to an input end of the control device 5, and an output end of the control device 5 is electrically connected to the first nozzle 305 and the second nozzle 306, respectively.
The second detecting device 4 detects the upper and lower surfaces of the strip steel after the descaling operation by the edge compensating device 3, and transmits the detection result to the control device 5, the control device 5 outputs an electric signal to each of the first nozzles 305 and each of the second nozzles 306 according to the detection result of the second detecting device 4, and the first nozzles 305 and the second nozzles 306 are both controllable nozzles, and the flow rate of the abrasive flow can be adjusted according to the electric signal output by the control device 5.
The specific adjusting method comprises the following steps:
when the descaling rate of a certain area of the edge part of the surface of the strip steel is lower than 100%, increasing the flow of the abrasive flow acting on the area;
when the descaling rate of a certain area of the edge part of the surface of the strip steel is equal to 100 percent and the surface roughness is greater than the quality requirement standard, reducing the flow of the abrasive flow acting on the area;
when the descaling rate of a certain area of the edge of the surface of the strip steel is equal to 100 percent and the surface roughness is not more than the quality requirement standard, the flow rate of the abrasive flow acting on the area is maintained.
It should be noted that in the implementation of the above technical solution, the number of the first jet flow frames 302 and the second jet flow frames 303 in the edge compensation device 3 may be adjusted according to the thickness of the scale layer on the surface of the strip steel, the organization of the scale layer, and the like, that is, when the scale layer on the edge is hard to remove, the number of the first jet flow frames 302 and the number of the second jet flow frames 303 may be set to be plural.
According to the scheme, the shot blasting descaling device pretreats the scale layer on the surface of the strip steel, removes all the scale layer in the middle area, and leaves the residual scale layer in the edge area for the edge compensation device to remove, so that fine descaling is realized. The utility model discloses a throw ball descaling device make full use of throw ball descaling work area big, descale characteristics fast, that the controllability is strong, limit compensation arrangement then full play abrasive material efflux descale the work area little, the concentration is good, the strong advantage of controllability, two sets of device cooperation divide worker, advantage complementary, have effectively improved the efficiency of descaling. Moreover, the utility model discloses online adjustable, the controllability is strong, and it is fast to descale, and the efficiency is high, has wide market potential.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. An edge compensation device for shot blasting descaling of hot rolled strip steel is characterized by comprising an abrasive jet flow box, wherein a first jet flow frame and a second jet flow frame are arranged in the abrasive jet flow box at intervals;
the first jet flow frame is provided with a plurality of first nozzles, the second jet flow frame is provided with a plurality of second nozzles, and the first nozzles and the second nozzles are connected with the abrasive material supply box through abrasive material supply pipes;
the first nozzles and the second nozzles are arranged in opposite directions, the first nozzles are distributed on two sides of the first jet flow frame, and the second nozzles are distributed on two sides of the second jet flow frame.
2. The edge compensation apparatus for shot blasting descaling of hot rolled strip as claimed in claim 1, wherein the number of the first nozzles is an even number, and the even number of the first nozzles are symmetrically distributed on the first jet frame.
3. The edge compensation apparatus for shot blasting descaling of hot rolled strip as claimed in claim 1, wherein the second nozzles correspond to the first nozzles one to one.
4. A descaling system comprising a shot blasting descaling device, wherein the shot blasting descaling device comprises a descaling box, a first shot blasting device and a second shot blasting device are oppositely arranged on the descaling box, and the edge compensation device of any one of claims 1-3 is arranged behind the shot blasting descaling device.
5. The descaling system according to claim 4, further comprising a control device, wherein a first detection device is arranged between the shot blasting descaling device and the edge compensation device, the first detection device is electrically connected with an input end of the control device, and an output end of the control device is electrically connected with the first shot blasting machine and the second shot blasting machine respectively.
6. The descaling system of claim 5, wherein the edge compensation device is followed by a second detection device, the second detection device being electrically connected to an input of the control device, and an output of the control device being electrically connected to the first nozzle and the second nozzle, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120419596.4U CN214516787U (en) | 2021-02-25 | 2021-02-25 | Edge compensation device for shot blasting and descaling of hot-rolled strip steel and descaling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120419596.4U CN214516787U (en) | 2021-02-25 | 2021-02-25 | Edge compensation device for shot blasting and descaling of hot-rolled strip steel and descaling system |
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| Publication Number | Publication Date |
|---|---|
| CN214516787U true CN214516787U (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120419596.4U Expired - Fee Related CN214516787U (en) | 2021-02-25 | 2021-02-25 | Edge compensation device for shot blasting and descaling of hot-rolled strip steel and descaling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214516787U (en) |
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2021
- 2021-02-25 CN CN202120419596.4U patent/CN214516787U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211223 Address after: Building 6, zone 5, No. 188, South Fourth Ring West Road, Fengtai District, Beijing 100160 Patentee after: Beijing Steele Luo Lin Technology Development Co.,Ltd. Address before: 100176 No.9, Liangshuihe 1st Street, Yizhuang Economic and Technological Development Zone, Daxing District, Beijing Patentee before: BEIJING POLYTECHNIC |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211029 |
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| CF01 | Termination of patent right due to non-payment of annual fee |