Small-flow square nozzle for square and round billets

Abstract

The utility model relates to a small-flow square nozzle for square and round billets, which comprises a square nozzle body, a water inlet and an air inlet are arranged on the rear side surface of the nozzle body, a mixing cavity is arranged on the front side surface of the nozzle body, the mixing cavity corresponds to the air inlet and is communicated with the air inlet through a weather port, and a spray head is mounted at the front end of the mixing cavity. A side through hole perpendicular to the mixing cavity is formed in the side wall of the nozzle body, an impact bolt is installed on the side through hole, a transition flow channel communicated with the water inlet is formed in the side wall of the nozzle body, the front end of the transition flow channel is communicated with the mixing cavity through a water opening, the water opening is right opposite to the front end of the impact bolt, and a stepped hole is formed in the water inlet. And a built-in water filter is arranged at the stepped hole. The spraying device is convenient to manufacture, capable of effectively intercepting large-particle impurities, not prone to blocking, sufficient in air-water mixing, even in spraying and good in cooling effect.

Description

Technical Field

[0001] This utility model relates to a nozzle, and more particularly to a small-flow square nozzle for square and round billets. Background Technology

[0002] The continuous casting process is essentially a solidification heat transfer process where high-temperature molten steel transforms into a solid state. Therefore, the solidification heat transfer process of the billet has a crucial impact on the quality of the billet, including surface cracks, internal cracks, and bulging. Water is mostly used as the cooling medium in the solidification heat transfer process of the billet. In a sense, continuous casting technology is water-cooling technology, that is, a solidification heat transfer process in which high-temperature molten steel is solidified into a billet using cooling water. The water-cooling system consists of many nozzles arranged in a regular pattern around the billet. When some nozzles become blocked, the billet at the corresponding location cannot receive cooling and its temperature rises sharply, sometimes by hundreds of degrees Celsius. This uneven cooling creates thermal stress, ultimately causing cracks in the billet. Existing continuous casting nozzles are prone to blockage when using substandard water media, resulting in insufficient air-water mixing, uneven spraying, and poor cooling effect. Utility Model Content

[0003] To address the aforementioned shortcomings, the purpose of this utility model is to provide a small-flow square nozzle for square and round billets that is simple in structure, easy to manufacture, less prone to clogging, ensures thorough air-water mixing, uniform spraying, and good cooling effect.

[0004] Therefore, the technical solution adopted by this utility model is:

[0005] A small-flow square nozzle for round and square billets includes a square nozzle body. A water inlet and an air inlet are provided on the rear side of the nozzle body. A mixing chamber is provided on the front side of the nozzle body, corresponding to and connected to the air inlet via a gas inlet. A nozzle head is installed at the front end of the mixing chamber. A side through-hole perpendicular to the mixing chamber is provided on the side wall of the nozzle body, and an impact bolt is installed on the side through-hole. The front part of the impact bolt is located inside the mixing chamber. A transition channel communicating with the water inlet is provided on the side wall of the nozzle body. A locking plug is provided at the rear end of the transition channel. The front end of the transition channel is connected to the mixing chamber via a gas inlet, which is directly opposite the front end of the impact bolt. A stepped hole is provided inside the water inlet, and an internal water filter is provided at the stepped hole. The internal water filter has a barrel-shaped structure, and several filter holes are evenly distributed at the bottom of the internal water filter. A locking cap is provided on the outside of the internal water filter, located inside the water inlet. The outer circumference of the locking cap is threadedly connected to the inner wall of the stepped hole.

[0006] As a further improvement to the above technical solution, the central axis of the weather port is perpendicular to the impact bolt.

[0007] As a further improvement to the above technical solution, a spray chamber is provided at the front of the center line of the nozzle, and a core rod is provided inside the spray chamber. The rear end of the core rod passes through the nozzle and is connected to a nut. The rear end face of the nozzle is provided with several spray holes communicating with the spray chamber. A distribution cover is installed at the front end of the core rod. A conical hole is provided on the inner wall of the front end of the spray chamber. The inner wall of the conical hole and the outer circumference of the distribution cover form a spray ring.

[0008] As a further improvement to the above technical solution, the impact bolt is connected to the side through hole via a thread.

[0009] As a further improvement to the above technical solution, an annular groove is provided on the rear end face of the nozzle body, which is located around the water inlet and air inlet, and a sealing ring is placed in the annular groove.

[0010] As a further improvement to the above technical solution, the outer end face of the locking plug and locking cap is lower than the side face of the nozzle body.

[0011] As a further improvement to the above technical solution, the filter hole is circular.

[0012] The advantages of this utility model are:

[0013] This invention features a simple structure and is easy to manufacture. Pressurized water passes through a built-in water filter with round filter holes, effectively intercepting large particles and elongated impurities to prevent clogging. The filtered pressurized water then flows through a transition channel and water inlet, jetting onto the impact nozzle for initial atomization. It then collides with compressed air entering through the air inlet along the axis, mixing in the mixing chamber and undergoing secondary atomization. The mixed fluid enters the spray chamber inside the nozzle for further thorough mixing and is then evenly sprayed by the spray ring at the nozzle's front end, achieving a better cooling effect. This improves the nozzle's online service life, reduces on-site maintenance time, and increases work efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 yes Figure 1 A schematic diagram of the internal water filter.

[0016] Figure 3 yes Figure 2 A bottom view.

[0017] Figure 4 This is a schematic diagram of the locking cap structure.

[0018] In the diagram, 1 is the nozzle body, 2 is the water inlet, 3 is the air inlet, 4 is the mixing chamber, 5 is the air outlet, 6 is the nozzle, 7 is the impact plug, 8 is the transition channel, 9 is the locking plug, 10 is the water outlet, 11 is the built-in water filter, 12 is the filter hole, 13 is the locking cap, 14 is the spray chamber, 15 is the core rod, 16 is the nut, 17 is the spray hole, 18 is the distribution cover, and 19 is the sealing ring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Reference Figure 1-4 A small-flow square nozzle for round and square billets includes a square nozzle body 1. The nozzle body 1 has a water inlet 2 and an air inlet 3 on its rear side. The nozzle body 1 has a mixing chamber 4 on its front side, which corresponds to and is connected to the air inlet 3 via an air outlet 5. A nozzle head 6 is installed at the front end of the mixing chamber 4. A side through-hole perpendicular to the mixing chamber 4 is provided on the side wall of the nozzle body 1, and an impact bolt 7 is installed on the side through-hole. The front part of the impact bolt 7 is located inside the mixing chamber 4. A transition channel 8 connected to the water inlet 2 is provided on the side wall of the nozzle body 1, and a locking plug 9 is provided at the rear end of the transition channel 8, allowing the transition channel to... The transition channel 8 is easy to process. The front end of the transition channel 8 is connected to the mixing chamber 4 through the water inlet 10. The water inlet 10 is directly opposite the front end of the impact plug 7. The inlet 2 has a stepped hole inside. The stepped hole has an internal water filter 11. The internal water filter 11 has a barrel-shaped structure. The bottom of the internal water filter 11 has several filter holes 12 evenly distributed. The outside of the internal water filter 11 has a locking cap 13 located inside the inlet 2. The outer circumference of the locking cap 13 is connected to the inner wall of the stepped hole by a thread to prevent the internal water filter 11 from loosening. The upper end face of the locking cap 13 has an internal hexagonal hole for easy disassembly and replacement.

[0021] As a further improvement to the above technical solution, the central axis of the weather port 5 is perpendicular to the impact bolt 7.

[0022] As a further improvement to the above technical solution, a spray chamber 14 is provided at the front of the center line of the nozzle 6. A core rod 15 is provided inside the spray chamber 14. The rear end of the core rod 15 passes through the nozzle 6 and is connected to a nut 16. A plurality of spray holes 17 communicating with the spray chamber 14 are provided on the rear end face of the nozzle 6. A distribution cover 18 is installed at the front end of the core rod 15. A conical hole is provided on the inner wall of the front end of the spray chamber 14. The inner wall of the conical hole and the outer circumference of the distribution cover 18 form a spray ring. The mixed fluid enters the spray chamber 14 inside the nozzle 6 and is fully mixed again. It is then evenly sprayed by the spray ring at the front end of the nozzle 6, thereby achieving a better cooling effect.

[0023] As a further improvement to the above technical solution, the impact bolt 7 is connected to the side through hole by a thread, which facilitates installation, disassembly and replacement.

[0024] As a further improvement to the above technical solution, the rear end face of the nozzle body 1 is provided with an annular groove located around the water inlet 2 and the air inlet 3, and a sealing ring 19 is placed in the annular groove.

[0025] As a further improvement to the above technical solution, the outer end faces of the locking plug 9 and the locking cap 13 are lower than the side of the nozzle body 1, making its appearance flat.

[0026] As a further improvement to the above technical solution, the filter hole 12 is round, and the diameter of the round hole is smaller than the diameter of the water inlet, which can effectively intercept large particulate impurities and long strip-shaped impurities.

[0027] Working principle:

[0028] Pressurized water enters the inlet and passes through the built-in water filter, which intercepts large particles of impurities in the water medium to prevent clogging. The filtered pressurized water then passes through the transition channel and the water inlet, and is jetted onto the impact plug for a first atomization spray. At this point, it collides with the compressed air entering from the air inlet along the axis, and is mixed inside the mixing chamber, undergoing a second atomization. The mixed fluid then enters the spray chamber inside the nozzle and is fully mixed again. It is then evenly sprayed by the spray ring at the front of the nozzle, thereby achieving a better cooling effect.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A small-flow square nozzle for square and round blanks, characterized in that, The nozzle includes a block-shaped nozzle body. A water inlet and an air inlet are located on the rear side of the nozzle body. A mixing chamber is located on the front side of the nozzle body, corresponding to and connected to the air inlet via a gas outlet. A nozzle head is installed at the front end of the mixing chamber. A side through-hole perpendicular to the mixing chamber is provided on the side wall of the nozzle body, and an impact bolt is installed on the side through-hole. The front part of the impact bolt is located inside the mixing chamber. A transition channel connected to the water inlet is provided on the side wall of the nozzle body. A locking plug is provided at the rear end of the transition channel. The front end of the transition channel is connected to the mixing chamber via a gas outlet, which is directly opposite the front end of the impact bolt. A stepped hole is provided inside the water inlet, and an internal water filter is provided at the stepped hole. The internal water filter has a barrel-shaped structure, and several filter holes are evenly distributed at the bottom of the internal water filter. A locking cap located inside the water inlet is provided on the outside of the internal water filter, and the outer circumference of the locking cap is threadedly connected to the inner wall of the stepped hole.

2. The small-flow square nozzle for square and round blanks according to claim 1, characterized in that, The central axis of the weather vent is perpendicular to the impact bolt.

3. The small-flow square nozzle for square and round blanks according to claim 1, characterized in that, The nozzle has a spray chamber at the front of its centerline, and a core rod is provided inside the spray chamber. The rear end of the core rod passes through the nozzle and is connected to a nut. The rear end face of the nozzle has several spray holes that communicate with the spray chamber. A distribution cover is installed at the front end of the core rod. A conical hole is provided on the inner wall of the front end of the spray chamber. The inner wall of the conical hole and the outer circumference of the distribution cover form a spray ring.

4. A small-flow square nozzle for square and round blanks according to claim 1, characterized in that, The impact bolt is connected to the side through hole via a thread.

5. A small-flow square nozzle for square and round blanks according to claim 1, characterized in that, The nozzle body has an annular groove on its rear end face, located around the water inlet and air inlet, and a sealing ring is placed in the annular groove.

6. A small-flow square nozzle for square and round blanks according to claim 1, characterized in that, The outer end faces of the locking plug and locking cap are lower than the side face of the nozzle body.

7. A small-flow square nozzle for square and round blanks according to claim 1, characterized in that, The filter hole is round.

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