CN110774178A - Protection and guiding device of acidless descaling pill material flow - Google Patents
Protection and guiding device of acidless descaling pill material flow Download PDFInfo
- Publication number
- CN110774178A CN110774178A CN201911046646.2A CN201911046646A CN110774178A CN 110774178 A CN110774178 A CN 110774178A CN 201911046646 A CN201911046646 A CN 201911046646A CN 110774178 A CN110774178 A CN 110774178A
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- descaling
- shot
- flow
- acid
- protecting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
- B24C1/086—Descaling; Removing coating films
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention provides a device for protecting and guiding a material flow of an acid-free descaling pill, belonging to the technical field of metallurgical production equipment; the protection and guide device comprises a descaling box body, a shot blasting descaling machine is arranged on the descaling box body and connected with the inlet side of the shot flow protection pipeline, and a first rebound guide device and a second rebound guide device are sequentially arranged behind the outlet side of the shot flow protection pipeline. The protection and guide device can effectively realize the guidance and protection of shot blasting descaling shot material flow, avoids the impact interference of external shots, effectively improves the energy efficiency and descaling efficiency of a descaling system on the premise of not increasing energy consumption, reduces the production cost of the system, has a simple structure and low investment cost, and has wide market application prospect on a steel production line.
Description
Technical Field
The invention relates to the technical field of metallurgical production equipment, in particular to a device for protecting and guiding a material flow of an acid-free descaling pill.
Background
Dense and brittle iron scales (commonly called scale layers) are formed on the surface of the hot-rolled strip steel. The removal of the iron scale is an indispensable link before processes such as cold rolling, hot galvanizing or coating. Compared with the traditional acid washing process, the shot blasting impact-based acid-free descaling technology has the advantages of environmental friendliness, no pollution, small occupied area, strong controllability, flexible series combination production and the like.
At present, the most prominent problem in the application of the acid-free descaling technology is the high cost of descaling steel per ton. The shot flow accelerated by the shot blasting machine inevitably encounters the impact of other shots in the descaling box body in the descaling process, changes the impact direction of part of the shots, causes uneven descaling and simultaneously causes huge energy waste. As shown in fig. 3, a certain shot P1 in the shot flow is shot at high speed to the strip steel along the dotted line direction, and another shot P2 which has finished the descaling operation is shot to point P along the dotted line direction, so that the shot P1 collides with the shot P2 at point P, the P1 deviates from the original motion trajectory, and then, the shot P1 and the shot P2 may continue to collide with other shots in the shot flow again. These collisions change the motion trajectories of a large number of projectiles, which cannot impact the scale layer on the surface of the strip steel according to the original motion mode, causing a large amount of energy waste. Because the descaling is a continuous operation, the shots are continuously ejected from the shot blasting descaling machine, which means that the collision among the shots is permanent, namely the energy waste phenomenon is continuous.
On the other hand, the shot accelerated by the shot blasting machine rebounds at a high speed after the shot blasting machine impacts the strip steel to remove scale, namely, considerable kinetic energy is remained, and the part of energy cannot be fully utilized, which is also an important reason for low energy efficiency of the system.
Disclosure of Invention
The invention aims to provide a device for protecting and guiding the material flow of acid-free descaling pills to solve the problem of low energy efficiency of the conventional acid-free descaling equipment due to the fact that pills collide with each other and the kinetic energy of rebounded pills after descaling cannot be fully utilized.
In order to solve the technical problems, the invention provides the following technical scheme:
the protection and guide device for the acid-free descaling pill flow comprises a descaling box body, wherein a shot blasting descaling machine is arranged on the descaling box body, the shot blasting descaling machine is connected with the inlet side of a pill flow protection pipeline, and a first rebound guide device and a second rebound guide device are sequentially arranged behind the outlet side of the pill flow protection pipeline.
The first rebounding guide device comprises a descaling rebounding plate, the descaling rebounding plate is connected with a rotating shaft through a supporting plate, and the rotating shaft is connected with the descaling box body through a bearing; the end part of the rotating shaft is provided with an angle control rod so as to adjust an included angle between the first rebounding guide device and the strip steel.
Preferably, the angle control rod is fixedly connected to the end of the rotating shaft, and the angle control rod is parallel to the descaling rebounding plate.
Furthermore, the first rebounding guide device further comprises an angle adjusting dial plate arranged on the descaling box body, and one end, far away from the rotating shaft, of the angle control rod is provided with an angle observation hole so as to observe an angle adjusting value on the angle adjusting dial plate.
Wherein the angle adjustment numerical range on the angle adjustment dial plate is 0-90 degrees; the 0-degree scale line of the angle adjustment dial plate and the axis of the rotating shaft are located on the same horizontal plane, and the 90-degree scale line of the angle adjustment dial plate and the axis of the rotating shaft are located on the same vertical plane.
The pellet flow protection pipeline is a hollow pipeline made of a composite plate, the inner layer is a wear-resistant cast iron plate, and the outer layer is a manganese steel plate.
And a purging nozzle for cleaning impurities on the surface of the descaled strip steel is arranged behind the second rebounding guide device.
And a rubber protective sleeve for protecting the bearing is arranged in the descaling box body.
Wherein the second bounce guide is structurally identical to the first bounce guide.
Wherein the descaling rebound plate is made of a manganese steel plate.
The technical scheme of the invention has the following beneficial effects:
in the scheme, the protection and guide device utilizes the shot flow protection pipeline, the first rebound guide device and the second rebound guide device to guide and protect shot blasting and descaling shot flows, so that the impact interference of external shots is avoided, the energy efficiency and the descaling efficiency of a descaling system are effectively improved on the premise of not increasing the energy consumption, the production cost of the system is reduced, the structure is simple, the investment cost is low, and the wide market application prospect is realized on a steel production line.
Drawings
FIG. 1 is a schematic view of the acid-free descaling shot stream protection and guidance apparatus of the present invention;
FIG. 2 is a schematic view of a pellet flow protection conduit of the present invention;
FIG. 3 is a schematic illustration of the collision between pellets;
FIG. 4 is a schematic diagram of the protective action of the pellet stream protective conduit of the present invention;
FIG. 5 is a schematic view of the first bounce guide of the present invention;
FIG. 6 is a cross-sectional view taken along line A1-A2 of FIG. 5;
FIG. 7 is a schematic view of the first bounce guide as viewed from the direction B1-B2 of FIG. 5;
FIG. 8 is a view illustrating the position adjustment of the angle control lever according to the present invention;
FIG. 9 is a partial perspective view of the angle control lever of the present invention.
[ reference numerals ]
1. A shot blasting descaler;
2. a pellet stream protection conduit;
2A, protecting the inlet side of the pipeline by the pill material flow;
2B, protecting the outlet side of the pipeline by the pill material flow;
3. a first bounce guide;
3A, descaling a rebound plate;
3B, a support plate;
3C, a rotating shaft;
3D, a bearing;
3E, an angle control rod;
3F, a rubber protective sleeve;
3G, adjusting the angle of the dial plate;
4. a second bounce guide;
5. a descaling box body;
6. a stream of pellets;
7. strip steel;
8. and (4) purging the nozzle.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, an embodiment of the present invention provides a protection and guidance device for an acid-free descaling shot flow, which includes a descaling box 5, wherein a shot blasting descaling machine 1 is disposed on the descaling box 5, the shot blasting descaling machine 1 is connected to an inlet side 2A of a shot flow protection pipeline, and a first rebound guide device 3 and a second rebound guide device 4 are sequentially disposed behind an outlet side 2B of the shot flow protection pipeline.
Compared with fig. 3 and 4, the pellet flow protection pipeline 2 plays a role in protecting pellets inside the pellet flow protection pipeline, and the pellets P2 bounce if impacting the pellet flow protection pipeline 2 in the motion process, so that the motion track of the pellets in the pellet flow protection pipeline 2 cannot be influenced, and energy waste caused by collision is effectively avoided.
As shown in fig. 5 to 7, the first bounce guide device 3 includes a scale removing bounce plate 3A, and the shot flow 6 bounces and is directed to the scale removing bounce plate 3A after the first impact descaling operation, and is again directed to the surface of the strip steel 7 at an angle after bounced by the scale removing bounce plate 3A, so as to perform a second descaling operation. The descaling rebounding plate 3A is connected with a rotating shaft 3C through a supporting plate 3B, and the rotating shaft 3C is connected with the descaling box body 5 through a bearing 3D; the end part of the rotating shaft 3C is provided with an angle control rod 3E so as to adjust the included angle between the first rebounding guide device 3 and the strip steel 7.
As shown in fig. 7, the actually observed rotation shaft 3C, bearing 3D, angle control lever 3E, and angle adjustment dial 3G are located above the curve Q1Q2, and the inside of the descaling box 5 is located below the curve Q1Q 2. The angle control rod 3E is fixedly connected to the end of the rotating shaft 3C, and the angle control rod 3E is always parallel to the descaling rebounding plate 3A. When the angle control rod 3E rotates, the rotating shaft 3C and the descaling rebounding plate 3A rotate synchronously, so that the motion trajectory of the pellet flow 6 rebounded by colliding with the descaling rebounding plate 3A is changed.
As shown in fig. 8 and 9, the first bounce guide 3 further includes an angle adjustment dial 3G disposed on the descaling box 5, and an angle observation hole is disposed at an end of the angle control lever 3E away from the rotating shaft 3C to observe an angle adjustment value on the angle adjustment dial 3G. An angle pointer is arranged on the angle observation hole, and if the angle pointed by the angle pointer is 45 degrees, the rotating angle of the angle control rod 3E is 45 degrees at the moment, namely the included angle between the descaling rebounding plate 3A and the plane of the strip steel 7 is 45 degrees.
Wherein the angle adjustment numerical range on the angle adjustment dial 3G is 0-90 degrees; the 0-degree scale line of the angle adjustment dial 3G and the axis of the rotating shaft 3C are located on the same horizontal plane, and the 90-degree scale line of the angle adjustment dial 3G and the axis of the rotating shaft 3C are located on the same vertical plane. Namely, when the angle pointer is positioned at the 0 ° scale mark of the angle adjustment dial 3G, the angle control lever 3E is positioned on the horizontal plane; when the angle pointer is located at the 90-degree scale mark of the angle adjustment dial 3G, the angle control rod 3E is located on a vertical surface.
The pellet flow protection pipeline 2 is a hollow pipeline made of a composite plate, the inner layer is a wear-resistant cast iron plate, and the outer layer is a manganese steel plate.
As shown in fig. 1, a purge nozzle 8 for cleaning impurities on the surface of the descaled strip steel 7 is provided behind the second bounce guide 4.
As shown in fig. 5, a rubber protective sleeve 3F for protecting the bearing 3D is provided inside the descaling housing 5.
Wherein the second bounce guide 4 has the same structure as the first bounce guide 3.
Wherein the descaling rebound plate 3A is made of a manganese steel plate.
The working process of the device for protecting and guiding the acid-free descaling pill material flow provided by the invention is as follows:
k1 ensures that the motor of the shot blasting descaling machine is in a closed state and the shot material supply switch is in a closed state;
k2, starting front and rear pinch rolls of the descaling box, and pinching the strip steel into the descaling box;
k3 stopping the pinch of the front pinch roll and the back pinch roll after the strip steel is clamped by the back pinch roll;
k4 according to the production requirement, the operation worker adjusts the included angle between the descaling rebounding plate and the strip steel through rotating the angle control rod;
k5 ensures that the shot material feeding switch is in a closed state, and turns on a motor of the shot blasting descaler;
k6 sets the motor speed, after the motor speed is stable, opens the pellet feeding switch, and starts the front and back pinch rolls to start the descaling operation.
According to the scheme, the protection and guide device effectively utilizes energy of the shot flow by weakening mutual collision among the shots and controlling the motion track and the impact angle of the shot flow, so that the energy efficiency and the descaling efficiency of the descaling system are effectively improved on the premise of not increasing energy consumption, the production cost of the system is reduced, the structure is simple, the investment cost is low, and the protection and guide device has a wide market application prospect on a steel production line.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. The protection and guide device for the acid-free descaling pill flow comprises a descaling box body, wherein a shot blasting descaling machine is arranged on the descaling box body, and the protection and guide device is characterized in that the shot blasting descaling machine is connected with the inlet side of a pill flow protection pipeline, and a first rebound guide device and a second rebound guide device are sequentially arranged behind the outlet side of the pill flow protection pipeline.
2. The apparatus for protecting and directing the flow of acid-free descaling shot according to claim 1, wherein the first rebound guide comprises a descaling rebounding panel connected to a rotating shaft through a support plate, the rotating shaft connected to the descaling box through a bearing; the end part of the rotating shaft is provided with an angle control rod so as to adjust an included angle between the first rebounding guide device and the strip steel.
3. The apparatus for protecting and directing the flow of acid-free descaling shot according to claim 2, wherein the angle control rod is fixedly connected to the end of the rotating shaft and is parallel to the descaling rebounding panel.
4. The apparatus for protecting and directing the flow of acid-free descaling shot according to claim 3, wherein the first rebounding guide further comprises an angle adjustment dial disposed on the descaling box body, and an end of the angle control lever away from the rotating shaft is provided with an angle observation hole for observing an angle adjustment value on the angle adjustment dial.
5. The acid-free descaling shot stream protection and guidance device of claim 4, wherein the angular adjustment value on the angular adjustment dial ranges from 0 ° to 90 °; the 0-degree scale line of the angle adjustment dial plate and the axis of the rotating shaft are located on the same horizontal plane, and the 90-degree scale line of the angle adjustment dial plate and the axis of the rotating shaft are located on the same vertical plane.
6. The apparatus for protecting and directing the flow of acid-free descaling shot material according to claim 1, wherein the shot material flow protection pipe is a hollow pipe made of composite plate, the inner layer is wear-resistant cast iron plate, and the outer layer is manganese steel plate.
7. The apparatus for protecting and directing the flow of acid-free descaling shot according to claim 1, wherein a purge nozzle for cleaning impurities on the surface of the descaled strip is disposed behind the second bounce guide.
8. The acid-free descaling shot flow protecting and guiding device according to claim 2, wherein the descaling box body is internally provided with a rubber protective sleeve for protecting the bearing.
9. The apparatus for protecting and directing the flow of acid-free descaling shot according to any of claims 1 to 8, wherein the second bounce guide is identical in structure to the first bounce guide.
10. The apparatus for protecting and directing the flow of acid-free descaling shot according to claim 2, wherein the descaling rebounding sheet is manganese steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911046646.2A CN110774178A (en) | 2019-10-30 | 2019-10-30 | Protection and guiding device of acidless descaling pill material flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911046646.2A CN110774178A (en) | 2019-10-30 | 2019-10-30 | Protection and guiding device of acidless descaling pill material flow |
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| Publication Number | Publication Date |
|---|---|
| CN110774178A true CN110774178A (en) | 2020-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911046646.2A Pending CN110774178A (en) | 2019-10-30 | 2019-10-30 | Protection and guiding device of acidless descaling pill material flow |
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| CN (1) | CN110774178A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112743456A (en) * | 2020-11-27 | 2021-05-04 | 北京电子科技职业学院 | Acid-free descaling device for strip steel |
-
2019
- 2019-10-30 CN CN201911046646.2A patent/CN110774178A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112743456A (en) * | 2020-11-27 | 2021-05-04 | 北京电子科技职业学院 | Acid-free descaling device for strip steel |
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