Anti-blocking nozzle for slab continuous casting

Abstract

The utility model relates to an anti-blocking nozzle for slab continuous casting. Comprising a nozzle body, an air inlet and a water inlet which are located in the same plane are formed in the nozzle body, an air spraying channel and a water spraying channel which are perpendicular to each other and communicated with each other are arranged in the nozzle body, a water throttling connector is arranged at the front end of the water spraying channel, and a plug is arranged at the outer end of the water spraying channel. The rear end of the air injection channel is communicated with the air inlet through an air throttling opening, the front end of the air injection channel is connected with a mixing pipe, a spray head is installed at the front end of the mixing pipe, a built-in water filter is installed at the water inlet, and the front portion of the built-in water filter is located in the water spraying channel. The spraying device is convenient to manufacture, not easy to block, sufficient in air-water mixing, uniform in spraying and good in cooling effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to a nozzle, especially a kind of anti-blocking nozzle for slab continuous casting. BACKGROUND

[0002] Continuous casting process is actually the solidification heat transfer process from high-temperature molten steel to solid state, so the solidification heat transfer process of casting blank plays a crucial role in the quality of surface crack, internal crack, bulging and the like of casting blank.In the solidification heat transfer process of casting blank, water is mostly used as cooling medium, which means that, in a certain sense, continuous casting technology is water cooling technology, i.e., a solidification heat transfer process of casting blank by cooling water.Water cooling system is arranged around casting blank by many nozzles in a regular manner, when part of nozzles is blocked, the corresponding position of casting blank cannot be cooled, and the temperature of casting blank rises sharply, which can be as high as several hundred degrees Celsius, resulting in uneven cooling, thermal stress, and finally causing cracks in casting blank.The existing nozzle for continuous casting is prone to blockage when using substandard water medium, which leads to insufficient gas-water mixing, uneven spraying, serious compressed air energy consumption, low water mist impact force and poor cooling effect. SUMMARY

[0003] In view of the above defects, the utility model aims to provide an anti-blocking nozzle for slab continuous casting, which is simple in structure, easy to manufacture, not prone to blockage, has sufficient gas-water mixing, uniform spraying and good cooling effect.

[0004] To this end, the utility model adopts the following technical scheme:

[0005] An anti-blocking nozzle for slab continuous casting, comprising a nozzle body, an air inlet and a water inlet arranged on the same plane of the nozzle body, an air injection channel and a water injection channel arranged in the nozzle body and connected to each other, a water throttling connector arranged at the front end of the water injection channel, a plug arranged at the outer end of the water injection channel, the water inlet connected to the water injection channel, the air injection channel connected to the air inlet through an air throttling port at the rear end, a mixing pipe connected to the front end of the air injection channel, a spray head arranged at the front end of the mixing pipe, an internal water filter arranged at the water inlet, and the front part of the internal water filter arranged in the water injection channel.

[0006] As a further improvement of the above technical scheme, the internal water filter comprises a filter pipe and a connector, a plurality of filter holes are arranged on the pipe wall of the filter pipe, a hexagonal through hole is arranged at the outer end face of the center of the connector and connected to the filter pipe, the outer wall of the connector is connected to the inner wall of the water inlet through threads, and the filter pipe is arranged in the water injection channel.

[0007] As a further improvement of the above technical scheme, the filter holes are circular holes.

[0008] As a further improvement of the above technical solution, the built-in water filter is a whole built-in water filter, and the filter pipe and the connecting head are in an integrated structure.

[0009] As a further improvement of the above technical solution, the built-in water filter is a split built-in water filter, and the front end of the connecting head is provided with a mounting hole, and the rear end of the filter pipe is matched with the mounting hole.

[0010] As a further improvement of the above technical solution, two connecting holes are arranged on the nozzle body, and the nozzle body is fixedly connected with the air and water source supply equipment through bolts.

[0011] As a further improvement of the above technical solution, concentric grooves are arranged on the outer circumferences of the air inlet and the water inlet respectively, and O-shaped sealing rings are arranged in the grooves.

[0012] The utility model discloses the advantages are:

[0013] The utility model discloses simple structure, convenient to manufacture, and the water with certain pressure enters the nozzle body inside through the built-in water filter, is sprayed through the water throttle connector, and the compressed air that enters the air throttle in the air jet pipe is fully mixed, and is evenly sprayed through the spray head, the filter pipe of built-in water filter is provided with a plurality of filter holes, and the shape of the filter hole is a round hole, so that large particle impurities and long strip impurities are effectively intercepted, and the normal water pressure can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the structure schematic diagram of the utility model.

[0015] Figure 2 It is Figure 1 The sectional view of A-A in Fig.

[0016] Figure 3 It is the structure schematic diagram of the whole built-in water filter in the utility model.

[0017] Figure 4 It is the structure schematic diagram of the split built-in water filter in the utility model.

[0018] Fig. 1 is a nozzle body, 2 is an air inlet, 3 is a water inlet, 4 is an air jet channel, 5 is a water jet channel, 6 is a water throttle connector, 7 is a plug, 8 is an air throttle, 9 is a mixing pipe, 10 is a spray head, 11 is a built-in water filter, 12 is a filter pipe, 13 is a connecting head, 14 is a filter hole, 15 is an internal hexagonal through hole, 16 is a mounting hole, 17 is a connecting hole, 18 is a groove. DETAILED DESCRIPTION

[0019] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts under the premise that no creative efforts are made, belong to the scope of protection of the present application.

[0020] The utility model provides a kind of anti-blocking nozzle for slab continuous casting, including nozzle body 1, the air inlet 2 and water inlet 3 of being located in the same plane are equipped on the nozzle body 1, nozzle body 1 is equipped with the air injection channel 4 and water injection channel 5 that are perpendicular to each other and are connected, the front end of the water injection channel 5 is equipped with water throttle joint 6, the outer end of the water injection channel 5 is equipped with plug 7, the water inlet 3 is connected with water injection channel 5, the rear end of air injection channel 4 is connected with air inlet 2 by gas throttle 8, the front end of air injection channel 4 is connected with mixing pipe 9, the front end of mixing pipe 9 is equipped with nozzle 10, the water inlet 3 is equipped with built-in water filter 11, and the front part of built-in water filter 11 is located in the inside of water injection channel 5.

[0021] As a further improvement of the above technical solution, the built-in water filter 11 includes a filter tube 12 and a connecting head 13, a plurality of filter holes 14 are formed in the wall of the filter tube 12, the diameter of the filter holes 14 is smaller than the diameter of the water throttle joint 6, which effectively intercepts large particles and long-shaped impurities, preventing the water throttle joint 6 from being blocked, a hexagonal through hole 15 is formed in the outer end face of the center of the connecting head 13, which is connected with the filter tube 12, the outer wall of the connecting head 13 is connected with the inner wall of the water inlet 3 by threads, which facilitates the disassembly and installation of the connecting head 13, the front end of the filter tube 12 is open, and the filter tube 12 is located inside the water injection channel 5 with a distance of 0-2mm from the inner wall of the water injection channel 5, which also plays a role in filtering impurities in the pressure water.

[0022] As a further improvement of the above technical solution, the filter holes 14 are circular holes.

[0023] As a further improvement of the above technical solution, the built-in water filter 11 is a monolithic built-in water filter, and the filter tube 12 and the connecting head 13 are an integral structure.

[0024] As a further improvement of the above technical solution, the built-in water filter 11 is a split built-in water filter, the front end of the connecting head 13 is provided with a mounting hole 16, the rear end of the filter tube 12 is matched with the mounting hole 16, which plays a role in fixing the filter tube 12, and the split structure is convenient for manufacturing and processing.

[0025] As a further improvement of the above technical solution, two connecting holes 17 are provided on the nozzle body 1.

[0026] As further improvement of the above technical scheme, the outer periphery of the air inlet 2 and the water inlet 3 is respectively provided with a concentric groove 18, and an O-shaped sealing ring is placed in the groove 18, so that the air inlet 2 and the water inlet 3 can play a sealing role when connected with the surface of the air and water source equipment.

[0027] Working principle:

[0028] The water with certain pressure enters the nozzle body through the built-in water filter, is sprayed through the water throttling connector, is fully mixed with the compressed air entering the air throttling port in the air injection pipe, and is uniformly sprayed through the spray head; since a plurality of filtering holes are formed on the filtering pipe of the built-in water filter, the filtering holes are circular holes, large-particle impurities and long strip impurities are effectively intercepted, blockage can be effectively avoided, normal water pressure can be ensured, and thus a better cooling effect can be achieved.

[0029] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A clogging-preventing nozzle for slab continuous casting, characterized by, The nozzle body is provided with air inlet and water inlet in the same plane, and the nozzle body is provided with air jet channel and water jet channel which are perpendicular and connected with each other, the front end of the water jet channel is provided with water throttle joint, the outer end of the water jet channel is provided with plug, the water inlet is communicated with the water jet channel, the rear end of the air jet channel is communicated with the air inlet through air throttle, the front end of the air jet channel is connected with mixing pipe, the front end of the mixing pipe is provided with spray head, the water inlet is provided with built-in water filter, and the front part of the built-in water filter is located in the water jet channel.

2. The anti-blocking nozzle for slab continuous casting according to claim 1, characterized in that, The built-in water filter comprises a filter pipe and a connecting head, a plurality of filter holes are formed in the pipe wall of the filter pipe, a hexagonal through hole is formed in the outer end face of the center of the connecting head and communicated with the filter pipe, the outer wall of the connecting head is connected with the inner wall of the water inlet through threads, and the filter pipe is located in the water jet channel.

3. The anti-blocking nozzle for slab continuous casting according to claim 2, characterized in that, The shape of the filter hole is a circular hole.

4. The anti-blocking nozzle for slab continuous casting according to claim 2, wherein The built-in water filter is a whole built-in water filter, and the filter pipe and the connecting head are integrated.

5. The anti-blocking nozzle for slab continuous casting according to claim 2, wherein The built-in water filter is a split built-in water filter, the front end of the connecting head is provided with a mounting hole, and the rear end of the filter pipe is matched with the mounting hole.

6. The anti-blocking nozzle for slab continuous casting according to claim 1, wherein The nozzle body is provided with two connecting holes.

7. The anti-blocking nozzle for slab continuous casting according to claim 1, wherein The outer circumferences of the air inlet and the water inlet are respectively provided with concentric grooves, and O-shaped sealing rings are placed in the grooves.

Images