Cooling nozzle for controlled rolling and controlled cooling technology and deformed steel bar elbow tail bending prevention device
By designing a connected cavity structure and optimizing the shape of the water nozzle, the elbow bend problem caused by uneven cooling is solved, and the rapid and uniform cooling of the threaded steel bars is achieved, which improves the yield and safety.
Patent Information
- Application Number
- CN202422031559.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-08-21
AI Technical Summary
The existing cooling nozzle structure causes the cooling water to be unable to be replenished to the core body in time, resulting in uneven cooling of the threaded steel bars, resulting in serious problems with elbows and tails, affecting the material yield and safety.
A cooling nozzle for controlled rolling and cooling technology is designed. By providing a first cavity and a second cavity in the cooling nozzle, it ensures that cooling water can be introduced from the first cavity to the second cavity in a timely manner, and prepares for the water spray cooling of the intermediate substitute core. The water spray port is designed as a gradually shrinking structure to improve cooling uniformity, and a cross beam and oblique iron are provided in the device to compensate for installation errors.
The cooling of each part of the threaded steel bar is achieved faster and evenly, effectively preventing elbows and tails, improving the yield rate and reducing workers' labor intensity and safety risks.
Smart Images
Figure CN223171632U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steel rolling cooling, in particular to a cooling nozzle used in controlled rolling and controlled cooling technology and a device for preventing threaded steel from bending. Background Art
[0002] Multi-slice bar rolling is the process of rolling a single billet into multiple bars simultaneously along the longitudinal direction, thereby improving equipment utilization and production volume.
[0003] When cutting Φ12-Φ25 threaded steel bars during steel rolling production in the iron and steel metallurgical industry, there is a serious and difficult-to-control problem of bending ends on the cooling bed. After the steel is placed on the cooling bed, the head and tail are bent and cannot fall into the same tooth groove on the straightening plate as the main steel. As a result, a 40-50cm bent area needs to be cut off after cooling, which has a significant impact on the yield rate and sizing rate indicators. In order to reduce the head and tail cutting loss, manual auxiliary hooks are required to align the head and tail of the steel bars with the tooth groove where the main steel is located when they are placed on the cooling bed, which increases the labor intensity of the workers; at the same time, bending ends pose a safety risk to the steel stacking on the cooling bed. Therefore, the above problems unnecessarily increase the labor intensity of the workers, pose safety risks, and pose quality risks due to the poor selection of bent materials caused by the bending end problems.
[0004] During the cutting and rolling of rebar, excessively high and uneven temperatures are among the causes of twisting and bending. To prevent this, the cooling function and uniformity of the water-through cooling system need to be improved. The most critical component of the water-through cooling system is the cooling nozzle, which includes the central refill body. The current cooling nozzle structure prevents cooling water from reaching the refill body in a timely manner, resulting in the cooling nozzle's inability to uniformly cool the rebar passing through it, and poorly preventing twisting and bending. Utility Model Content
[0005] In order to solve the technical problem that the structure of the current cooling nozzle causes cooling water to be unable to be replenished to the core replacement body in time, resulting in the cooling nozzle being unable to uniformly cool the threaded steel bars passing through the inside in time, and preventing poor bending and tailing effects, the utility model provides a cooling nozzle for controlled rolling and controlled cooling technology and a threaded steel anti-bending and tailing device.
[0006] To achieve the above-mentioned purpose, the technical solution adopted by the cooling nozzle for controlled rolling and controlled cooling technology in the utility model is:
[0007] A cooling nozzle for controlled rolling and controlled cooling technology, comprising an inlet insert, an intermediate replacement core and an outlet insert. The overall cooling nozzle is cylindrical, and a cooling channel is opened inside the cooling nozzle. The cooling channel passes through the inlet insert, the intermediate replacement core and the outlet insert. A cooling water inlet is opened at the bottom of the inlet insert, and a first cavity is provided inside the inlet insert. The first cavity is arranged around the cooling channel in the circumferential direction of the cooling nozzle. The cooling water inlet is communicated with the first cavity. A water passing port is opened on the side wall of the first cavity close to the intermediate replacement core, and the water passing port communicates the first cavity and the cooling channel; a second cavity is provided inside the intermediate replacement core. The second cavity is arranged around the cooling channel in the circumferential direction of the cooling nozzle. The bottom of the first cavity is communicated with the second cavity; a water spraying port is opened on the side wall of the second cavity close to the cooling channel, and the water spraying port communicates the second cavity and the cooling channel.
[0008] With the above structural scheme, the first cavity and the second cavity are communicated to ensure that after the cooling water enters from the cooling water inlet, the cooling water can be timely introduced from the first cavity into the second cavity to prepare for the water spraying cooling of the intermediate replacement core, ensure that the cooling water can be timely supplemented to the replacement core body, and timely cool the threaded steel bars in the cooling channel of the intermediate replacement core evenly, so that the cooling of each part of the threaded steel bars is faster and more uniform, and the effect of preventing the elbows and tails is improved.
[0009] As a preferred implementation manner of a cooling nozzle for controlled rolling and controlled cooling technology, the inlet insert, the intermediate replacement core and the outlet insert are arranged along the axial direction of the cooling nozzle. The length direction of the water spraying port is arranged along the axial direction of the cooling nozzle, and the opening width of the water spraying port gradually decreases in the direction from the second cavity to the cooling channel.
[0010] With the above structural scheme, the water spraying pressure of the water spraying port is ensured, laying a foundation for the uniformity of cooling.
[0011] As a preferred implementation manner of a cooling nozzle for controlled rolling and controlled cooling technology, the intermediate replacement core includes a replacement core body and a replacement core sleeve. The replacement core sleeve is a hollow cylinder, and the replacement core sleeve is sleeved outside the replacement core body. A second cavity is formed between the replacement core sleeve and the replacement core body.
[0012] As a preferred implementation manner of a cooling nozzle for controlled rolling and controlled cooling technology, the diameter of the cooling channel in the inlet insert is 36 mm.
[0013] With the above structural scheme, compared with the prior art, it is appropriately reduced, which can increase the pressure of the cooling water flow, ensure that the pressure is supplemented to the intermediate replacement core, and improve the uniformity of cooling.
[0014] As a preferred implementation manner of a cooling nozzle for controlled rolling and controlled cooling technology, the maximum width of the water spraying port is 2 mm, and the inclination angle of the water spraying port in the direction from the second cavity to the cooling channel is 60°.
[0015] Adopting the above structural solution ensures the final water spraying pressure and lays a foundation for the uniformity of cooling.
[0016] To achieve the above object, the technical solution adopted by a device for preventing the head and tail of deformed steel bars from bending in the utility model is as follows:
[0017] A device for preventing the head and tail of deformed steel bars from bending includes a box body, a box cover is arranged on the top of the box body, an inlet is opened at the front end of the box body, an outlet is opened at the rear end of the box body, the inlet and the outlet are coaxially arranged, and a plurality of cooling nozzles for any one of the above-mentioned controlled rolling and controlled cooling technologies are arranged between the inlet and the outlet. The inlet plug, the middle replacement core and the outlet plug in the cooling nozzle are arranged in sequence along the direction from the inlet to the outlet, and the cooling channels between two adjacent cooling nozzles are aligned and communicated.
[0018] Adopting the above structural solution, the box body is independently enclosed and safer.
[0019] As a preferred implementation manner of a device for preventing the head and tail of deformed steel bars from bending, a base is connected to the bottom of the box body.
[0020] Adopting the above structural solution makes the box body structure more stable.
[0021] As a preferred implementation manner of a device for preventing the head and tail of deformed steel bars from bending, the cooling water inlets of all the cooling nozzles are interconnected.
[0022] Adopting the above structural solution is beneficial to temperature uniformity.
[0023] As a preferred implementation manner of a device for preventing the head and tail of deformed steel bars from bending, a plurality of hanging lugs are connected to both sides of the box body.
[0024] Adopting the above structural solution facilitates the movement of the box body.
[0025] As a preferred implementation manner of a device for preventing the head and tail of deformed steel bars from bending, a plurality of parallel cross beams are arranged inside the box body. The cross beams are connected to both sides inside the box body, the cross beams correspond to the cooling nozzles one by one, the cross beams are located above the cooling nozzles, and wedges are installed between the cross beams and the tops of the cooling nozzles.
[0026] Adopting the above structural solution, the wedges can compensate for the installation errors of each cooling nozzle and ensure that each cooling nozzle is stably installed in the box body.
[0027] The beneficial effects of the utility model include:
[0028] Connect the first cavity and the second cavity in the cooling nozzle to ensure that after the cooling water enters from the cooling water inlet, the cooling water can be timely introduced from the first cavity into the second cavity, preparing for the spray cooling of the intermediate replacement core, ensuring that the cooling water can be timely replenished into the replacement core body, and timely and uniformly cooling the threaded steel bars in the cooling channels of the intermediate replacement core, so that the cooling of each part of the threaded steel bars is faster and more uniform, improving the effect of preventing the elbows and tails. Description of the Drawings
[0029] In order to more clearly illustrate the technical solutions of the present invention, the drawings required for description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0030] Figure 1 Semi-sectional structure schematic diagram of the cooling nozzle in the prior art;
[0031] Figure 2 Front view structure schematic diagram of the replacement core body in the prior art;
[0032] Figure 3 Cross-sectional structure schematic diagram of the replacement core body in the side direction in the prior art;
[0033] Figure 4 Semi-sectional structure schematic diagram in the main view direction of a device for preventing elbows and tails of threaded steel bars under a controlled rolling and controlled cooling technology in the specific embodiment of the present invention;
[0034] Figure 5 Top view structure schematic diagram of a device for preventing elbows and tails of threaded steel bars under a controlled rolling and controlled cooling technology in the specific embodiment of the present invention;
[0035] Figure 6 Side view structure schematic diagram of a device for preventing elbows and tails of threaded steel bars under a controlled rolling and controlled cooling technology in the specific embodiment of the present invention;
[0036] Figure 7 Semi-sectional structure schematic diagram of the cooling nozzle in the specific embodiment of the present invention;
[0037] Figure 8 Front view structure schematic diagram of the replacement core body in the specific embodiment of the present invention;
[0038] Figure 9 Cross-sectional structure schematic diagram of the replacement core body in the side direction in the specific embodiment of the present invention.
[0039] List of components and reference numerals:
[0040] 1. Box body; 2. Box cover; 3. Entrance; 4. Base; 5. Suspension nose; 6. Cooling nozzle; 7. Inlet plug; 8. Intermediate replacement core; 81. Replacement core body; 82. Replacement core sleeve; 9. Outlet plug; 10. Cooling channel; 11. Cooling water inlet; 12. First cavity; 13. Second cavity; 14. Water spray opening; 15. Cross beam; 16. Wedge; 17. Reverse nozzle. Detailed implementation manners
[0041] To make the objectives, features, and advantages of the present utility model more obvious and understandable, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the specific embodiments of the present utility model. Obviously, the embodiments described below are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.
[0042] Refer to Figures 4-9 , in this embodiment, a cooling nozzle 6 for controlled rolling and controlled cooling technology and a device for preventing the head and tail of deformed steel bars from bending are proposed. Among them, a device for preventing the head and tail of deformed steel bars from bending includes a box body 1, a box cover 2 is provided on the top of the box body 1, an entrance 3 is opened at the front end of the box body 1, an outlet is opened at the rear end of the box body 1, the entrance 3 and the outlet are coaxially arranged, and a base 4 is connected to the bottom of the box body 1. A plurality of suspension noses 5 are connected to both sides of the box body 1.
[0043] A plurality of cooling nozzles 6 for controlled rolling and controlled cooling technology are arranged between the entrance 3 and the outlet of the box body 1. The cooling nozzle 6 is integrally cylindrical. The cooling nozzle 6 sequentially includes an inlet plug 7, an intermediate replacement core 8, and an outlet plug 9 along the direction from the entrance 3 to the outlet. The inlet plug 7, the intermediate replacement core 8, and the outlet plug 9 are arranged along the axial direction of the cooling nozzle 6. A cooling channel 10 is opened in the cooling nozzle 6. The cooling channel 10 passes through the inlet plug 7, the intermediate replacement core 8, and the outlet plug 9. The diameter of the cooling channel 10 in the inlet plug 7 is 36 mm. The cooling channels 10 between two adjacent cooling nozzles 6 are aligned and communicated. A plurality of parallel cross beams 15 are arranged inside the box body 1. The cross beams 15 are connected to both sides in the radial direction inside the box body 1. The cross beams 15 correspond to the cooling nozzles 6 one by one. The cross beams 15 are located above the cooling nozzles 6. A wedge 16 is installed between the cross beams 15 and the tops of the cooling nozzles 6. A plurality of reverse nozzles 17 are provided on the outlet side of the box body 1. The reverse nozzles 17 have the same structure as the cooling nozzles 6, but the arrangement direction is opposite to prevent water from being carried out.
[0044] The bottom of the inlet insert 7 is provided with a cooling water inlet 11. A first cavity 12 is arranged inside the inlet insert 7. The first cavity 12 is arranged around the cooling channel 10 in the circumferential direction of the cooling nozzle 6. The cooling water inlet 11 is communicated with the first cavity 12. A water passing port is formed in the side wall of the first cavity 12 close to the middle replacement core 8. The water passing port communicates the first cavity 12 and the cooling channel 10. The cooling water inlets 11 of a plurality of cooling nozzles 6 are communicated with each other.
[0045] A second cavity 13 is arranged inside the middle replacement core 8. The second cavity 13 is arranged around the cooling channel 10 in the circumferential direction of the cooling nozzle 6. The bottom of the first cavity 12 is communicated with the second cavity 13. Specifically, the middle replacement core 8 includes a replacement core body 81 and a replacement core sleeve 82. The replacement core sleeve 82 is a hollow cylinder. The replacement core sleeve 82 is sleeved outside the replacement core body 81. A second cavity 13 is formed between the replacement core sleeve 82 and the replacement core body 81. A water spraying port 14 is formed in the side wall of the second cavity 13 close to the cooling channel 10. The water spraying port 14 communicates the second cavity 13 and the cooling channel 10. The length direction of the water spraying port 14 is arranged along the axial direction of the cooling nozzle 6. The opening width of the water spraying port 14 gradually decreases in the direction from the second cavity 13 to the cooling channel 10. The maximum width of the water spraying port 14 is 2 mm. The inclination angle of the water spraying port 14 in the direction from the second cavity 13 to the cooling channel 10 is 60°.
[0046] The working principle of this embodiment is as follows:
[0047] The ribbed steel bar penetrates into the box body 1 from the inlet 3 at the front end of the box body 1, and then penetrates into the cooling channel 10 of the cooling nozzle 6. During this period, all the cooling nozzles 6 between the inlet 3 and the outlet are sequentially penetrated in the order of the inlet insert 7, the middle replacement core 8 and the outlet insert 9, and finally penetrates out from the reverse nozzle 17 and the outlet at the rear end of the box body 1. While the ribbed steel bar penetrates into the box body 1, the cooling water enters from the cooling water inlet 11 of the cooling nozzle 6, and the first cavity 12 and the second cavity 13 are communicated. The cooling water can be timely introduced from the first cavity 12 into the second cavity 13, preparing for the water spraying cooling of the water spraying port 14 in the middle replacement core 8, ensuring that the cooling water can be timely supplemented into the replacement core body 81, and timely cooling the ribbed steel bar in the cooling channel 10 in the middle replacement core 8 evenly, so that the cooling of each part of the ribbed steel bar is faster and more uniform, and the effect of preventing the bending of the head and tail is improved.
[0048] In this embodiment, Figure 7 A sealing structure is installed in the gap at the leftmost side of the inlet insert 7.
[0049] Referring to Figures 1-3 , in the prior art, the inlet insert 7 of the cooling nozzle 6 and the bottom of the middle replacement core 8 are not communicated, and the water spraying port 14 is a plurality of hole-shaped ports.
[0050] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.
Claims
1. A cooling nozzle for controlled rolling and controlled cooling technology, comprising an inlet insert (7), an intermediate replacement core (8) and an outlet insert (9), characterized in that, The cooling nozzle (6) is cylindrical as a whole. A cooling channel (10) is formed inside the cooling nozzle (6). The cooling channel (10) passes through the inlet plug (7), the intermediate core (8) and the outlet plug (9). A cooling water inlet (11) is formed at the bottom of the inlet plug (7). A first cavity (12) is provided inside the inlet plug (7). The first cavity (12) is arranged around the cooling channel (10) in the circumferential direction of the cooling nozzle (6). The cooling water inlet (11) is communicated with the first cavity (12). A water passing port is formed on the side wall of the first cavity (12) close to the intermediate core (8). The water passing port communicates the first cavity (12) and the cooling channel (10); A second cavity (13) is provided inside the intermediate core (8). The second cavity (13) is arranged around the cooling channel (10) in the circumferential direction of the cooling nozzle (6). The bottom of the first cavity (12) is communicated with the second cavity (13); A water spraying port (14) is formed on the side wall of the second cavity (13) close to the cooling channel (10). The water spraying port (14) communicates the second cavity (13) and the cooling channel (10).
2. The cooling nozzle for controlled rolling and controlled cooling technology according to claim 1, characterized in that, The inlet plug (7), the intermediate core (8) and the outlet plug (9) are arranged along the axial direction of the cooling nozzle (6). The length direction of the water spraying port (14) is arranged along the axial direction of the cooling nozzle (6). The opening width of the water spraying port (14) gradually decreases in the direction from the second cavity (13) to the cooling channel (10).
3. The cooling nozzle for the controlled rolling and controlled cooling technology according to claim 1, characterized in that, The intermediate core (8) includes a core body (81) and a core sleeve (82). The core sleeve (82) is a hollow cylinder. The core sleeve (82) is sleeved outside the core body (81). A second cavity (13) is formed between the core sleeve (82) and the core body (81).
4. The cooling nozzle for the controlled rolling and controlled cooling technology according to claim 1, characterized in that, The diameter of the cooling channel (10) in the inlet plug (7) is 36 mm.
5. A cooling nozzle for a controlled rolling and controlled cooling technology according to claim 2, characterized in that, The maximum width of the water spraying port (14) is 2 mm. The inclination angle of the water spraying port (14) in the direction from the second cavity (13) to the cooling channel (10) is 60°.
6. A device for preventing the bending of the head and tail of ribbed steel bars, characterized in that, It includes a box body (1). A box cover (2) is provided at the top of the box body (1). An inlet (3) is formed at the front end of the box body (1). An outlet is formed at the rear end of the box body (1). The inlet (3) and the outlet are coaxially arranged. Between the inlet (3) and the outlet, there are a plurality of cooling nozzles (6) for the controlled rolling and controlled cooling technology as described in any one of claims 1-5. The inlet plug (7), the intermediate core (8) and the outlet plug (9) in the cooling nozzle (6) are arranged in sequence along the direction from the inlet (3) to the outlet. The cooling channels (10) between adjacent two cooling nozzles (6) are aligned and communicated.
7. The thread bar anti-bending head and tail device according to claim 6, characterized in that A base (4) is connected to the bottom of the box body (1).
8. A device for preventing the bending of the head and tail of deformed steel bars according to claim 7, characterized in that, The cooling water inlets (11) of all the cooling nozzles (6) are communicated with each other.
9. The thread steel anti-bending head and tail device according to claim 6, characterized in that, A plurality of hanging lugs (5) are connected to both sides of the box body (1).
10. A device for preventing the bending of the head and tail of threaded steel according to claim 6, characterized in that, A plurality of parallel cross beams (15) are provided inside the box body (1). The cross beams (15) are connected to both sides inside the box body (1). The cross beams (15) correspond to the cooling nozzles (6) one by one. The cross beams (15) are located above the cooling nozzles (6). A wedge iron (16) is installed between the cross beams (15) and the tops of the cooling nozzles (6).