Secondary anti-blocking nozzle for slab continuous casting
By introducing a two-stage filtration system into the nozzle, the nozzle clogging problem was solved, resulting in more uniform air-water mixing, improved cooling effect, and energy savings.
Patent Information
- Application Number
- CN202423133025.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-18
AI Technical Summary
Existing continuous casting nozzles are prone to clogging, resulting in insufficient air-water mixing, uneven spraying, poor cooling effect, and serious compressed air energy consumption.
A two-stage filtration system is adopted, including primary and secondary filters, which filter water and air media respectively to prevent large particles of impurities from entering the nozzle. Combined with a Y-type water distributor and mixer, it can achieve full mixing of air and water and secondary atomization.
It effectively avoids nozzle clogging, ensures uniform spray, improves cooling efficiency, and saves compressed air energy consumption.
Smart Images
Figure CN223655304U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a nozzle, especially a two-stage anti-blocking nozzle for slab continuous casting. BACKGROUND
[0002] The continuous casting process is actually a solidification heat transfer process from high-temperature molten steel to solid state, so the solidification heat transfer process of the casting blank plays a crucial role in the quality of surface cracks, internal cracks and bulging of the casting blank. In the solidification heat transfer process of the casting blank, water is mostly used as the cooling medium, which means that, in a certain sense, the continuous casting technology is a water cooling technology, that is, a solidification heat transfer process of solidifying high-temperature molten steel into a casting blank by cooling water. The water cooling system is arranged around the casting blank by a plurality of nozzles in a regular manner. When some nozzles are blocked, the corresponding position of the casting blank cannot be cooled, the temperature of the casting blank rises sharply, and the temperature rise can be as high as several hundred degrees Celsius, resulting in uneven cooling, thermal stress, and ultimately cracks in the casting blank. The existing nozzle for continuous casting is prone to blockage when using substandard gas-water medium, resulting in 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 a two-stage anti-blocking nozzle for slab continuous casting, which is convenient to manufacture, not prone to blockage, has sufficient gas-water mixing, uniform spraying, energy-saving gas consumption, improved spraying impact force, and better cooling effect.
[0004] To this end, the utility model adopts the following technical scheme:
[0005] A two-stage anti-blocking nozzle for slab continuous casting, comprising a nozzle seat, wherein a water inlet and an air inlet are arranged on the same plane of the nozzle seat, a water spraying channel is arranged in the nozzle seat, a water spraying pipe is connected to the front part of the water spraying channel, a stepped hole is arranged at the front end of the water spraying channel, an air spraying pipe is connected to the front part of the stepped hole, the water spraying pipe is located inside the air spraying pipe and the axes of the two pipes coincide, an annular space formed between the air spraying pipe and the water spraying pipe is an air spraying channel, the water inlet is connected to the rear part of the water spraying channel, the air inlet is connected to the rear part of the air spraying channel, a Y-shaped water distributor is installed at the front end of the water spraying pipe, a mixer is arranged inside the front end of the air spraying pipe, a spray head is installed at the front end of the air spraying pipe, a water throttling joint is arranged in the water inlet, an air throttling joint is arranged in the air inlet, a first-stage filter is installed on the water inlet and the air inlet and located outside the nozzle seat, a second-stage water filter is arranged in the rear end of the water spraying channel and located below the water inlet, and a second-stage air filter is arranged in the rear end of the air spraying channel and located below the air inlet.
[0006] As a further improvement of the above technical solution, the primary filter comprises a primary filter body, a filtering cavity is arranged in the primary filter body, a plurality of circular filtering holes are arranged in the side wall and the front end of the primary filter body, and the rear end of the primary filter body is connected to the inner wall of the water inlet and the air inlet through threads.
[0007] As a further improvement of the above technical solution, the secondary water filter comprises a filtering pipe and a connecting head, a plurality of circular water filtering holes are arranged on the pipe wall of the filtering pipe, and the front end outer wall of the connecting head is connected to the inner wall of the water spraying channel through threads.
[0008] As a further improvement of the above technical solution, the axis of the filtering pipe coincides with the axis of the water spraying pipe, and a water throttling joint is arranged between the filtering pipe and the water spraying pipe.
[0009] As a further improvement of the above technical solution, the secondary water filter is a whole secondary water filter, and the filtering pipe and the connecting head are in an integrated structure.
[0010] As a further improvement of the above technical solution, the secondary water filter is a split secondary water filter, the front end of the connecting head is provided with a mounting hole, the rear end of the mounting hole is closed, and the rear end of the filtering pipe is matched with the mounting hole.
[0011] As a further improvement of the above technical solution, the secondary gas filter comprises a circular pipe body, a plurality of circular gas filtering holes are arranged on the pipe wall of the circular pipe body, and the circular pipe body is sleeved outside the water spraying pipe and the axes thereof coincide.
[0012] As a further improvement of the above technical solution, the Y-shaped water distributor comprises a water distributor body, a water inlet hole is arranged at the center of the water distributor body, a plurality of downwardly inclined water distribution holes are uniformly distributed around the water distributor body, the water distribution holes are symmetrically arranged relative to the water inlet hole, and the upper ends of the water distribution holes are communicated with the water inlet hole.
[0013] As a further improvement of the above technical solution, a pin hole is arranged on the side wall of the nozzle seat, a pin is arranged in the pin hole, and the lower end of the pin is locked to the outer wall of the water spraying pipe.
[0014] As a further improvement of the above technical solution, an elliptical flow stabilizing cavity is arranged in the nozzle.
[0015] The advantages of the utility model are:
[0016] The utility model discloses manufacture is convenient, through adopting the utility model structure, the water medium with certain pressure is filtered out big granule impurity through primary filter before entering the water inlet, and the filtered pressure water is filtered into the water spraying channel again through secondary water filter, and simultaneously, the compressed air is filtered into the air jet channel again through secondary air filter before entering the air inlet, and the filtered compressed air is filtered into the air jet channel again through secondary air filter, and the pressure water enters the Y type water distributor center from the water spraying pipe, and carries out Y type jet flow around, and carries out primary atomization, and at this time, the compressed air that comes in through the air jet pipe is fully mixed with the axis direction, and carries out secondary atomization, and the gas water mixture with certain pressure enters the mixing cavity of the mixer and is sprayed from the nozzle, because the gas water all adopts secondary filter, and the filter hole is all circular filter hole, can effectively intercept big granule impurity and long strip impurity, effectively avoid the jamming phenomenon, guarantee the spray impact force, save the energy consumption of compressed air energy, improve the cooling efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is the structure schematic diagram of the utility model.
[0018] Figure 2 It is the structure schematic diagram of the utility model.
[0019] Figure 3 It is the structure schematic diagram of the utility model.
[0020] Figure 4 It is the structure schematic diagram of the utility model.
[0021] Figure 5 It is the structure schematic diagram of the utility model.
[0022] In the drawing, 1 is the nozzle seat, 2 is the water inlet, 3 is the air inlet, 4 is the water spraying channel, 5 is the water spraying pipe, 6 is the air jet pipe, 7 is the air jet channel, 8 is the Y type water distributor, 9 is the mixer, 10 is the nozzle, 11 is the water throttle connector, 12 is the air throttle connector, 13 is the primary filter, 14 is the secondary water filter, 15 is the secondary air filter, 16 is the filter cavity, 17 is the circular filter hole, 18 is the filter pipe, 19 is the connecting head, 20 is the circular water filter hole, 21 is the mounting hole, 22 is the circular air filter hole, 23 is the water inlet hole, 24 is the water distribution hole, 25 is the pin, 26 is the oval steady flow cavity. DETAILED DESCRIPTION
[0023] 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.
[0024] Referring to Figures 1-5 The utility model provides a two -stage anti -blocking nozzle for slab continuous casting, including nozzle seat 1, be equipped with water inlet 2 and air inlet 3 in the same plane on the nozzle seat 1, be equipped with a water spraying channel 4 in the nozzle seat 1, the front of water spraying channel 4 is connected with water spraying pipe 5, and the front end of water spraying channel 4 is equipped with ladder hole, and the front of ladder hole is connected with air jet pipe 6, and water spraying pipe 5 is located inside air jet pipe 6 and the axis of both coincides, and the annular space formed between air jet pipe 6 and water spraying pipe 5 is air jet channel 7, water inlet 2 is connected with the rear of water spraying channel 4, air inlet 3 is connected with the rear of air jet channel 7, the front end of water spraying pipe 5 is equipped with Y type water distributor 8, the inside of the front end of air jet pipe 6 is equipped with mixer 9, the front end of air jet pipe 6 is equipped with spray head 10, water inlet 2 is equipped with water throttle joint 11, and air inlet 3 is equipped with gas throttle joint 12, the water inlet 2 and air inlet 3 are all installed with the first filter 13 located in the outside of nozzle seat 1, the rear end in water spraying channel 4 is equipped with the second water filter 14 located below water inlet 2, and the rear end inside air jet channel 7 is equipped with the second gas filter 15 located below air inlet 3.
[0025] As a further improvement of the above technical solution, the first filter 13 includes a first filter body, the inside of the first filter body is provided with a filter cavity 16, the side wall and the front end of the first filter body are both provided with a plurality of circular filter holes 17, the diameter of the circular filter holes 17 is smaller than the size of the water throttle joint 11, so as to prevent the water throttle joint 11 from being blocked, and the rear end of the first filter body is connected with the inner wall of the water inlet 2 and the air inlet 3 through threads, so as to facilitate installation and disassembly.
[0026] As a further improvement of the above technical solution, the second water filter 14 includes a filter pipe 18 and a connecting head 19, a plurality of circular water filter holes 20 are formed on the pipe wall of the filter pipe 18, and the front end of the outer wall of the connecting head 19 is connected with the inner wall of the water spraying channel 4 through threads, so as to facilitate installation and disassembly.
[0027] As a further improvement of the above technical solution, the axis of the filter pipe 18 coincides with the axis of the water spraying pipe 5, the water throttle joint 11 is arranged between the filter pipe 18 and the water spraying pipe 5, the diameter of the circular water filter hole 20 is smaller than the size of the water throttle joint 11, so as to prevent the water throttle joint 11 from being blocked.
[0028] As a further improvement of the above technical solution, the secondary water filter 14 is a whole secondary water filter, and the filter pipe 18 and the connecting head 19 are in a one-piece structure.
[0029] As a further improvement of the above technical solution, the secondary water filter 14 is a split secondary water filter, the front end of the connecting head 19 is provided with a mounting hole 21, the rear end of the mounting hole 21 is closed, and the rear end of the filter pipe 18 is matched with the mounting hole 21.
[0030] As a further improvement of the above technical solution, the secondary gas filter 15 includes a circular pipe body, a plurality of circular gas filter holes 22 are formed in the pipe wall of the circular pipe body, the hole diameter of the circular gas filter hole 22 is smaller than the hole size of the gas throttle joint 12, so as to prevent the gas throttle joint 12 from being blocked, the circular pipe body is sleeved outside the water spraying pipe 5 and the axes of the two coincide, and the circular pipe body can be composed of two semicircular bodies.
[0031] As a further improvement of the above technical solution, the Y-shaped water distributor 8 includes a water distributor body, the water distributor body is provided with a water inlet hole 23 at the center, a plurality of downwardly inclined water distribution holes 24 are uniformly distributed around the water distributor body, the plurality of water distribution holes 24 are symmetrically arranged relative to the water inlet hole 23, and the upper ends of the water distribution holes 24 are in communication with the water inlet hole 23.
[0032] As a further improvement of the above technical solution, the side wall of the nozzle seat 1 is provided with a pin hole, a pin 25 is arranged in the pin hole, and the lower end of the pin 25 locks the outer wall of the water spraying pipe 5.
[0033] As a further improvement of the above technical solution, the inside of the nozzle 10 is provided with an oval flow stabilizing cavity 26 at the outlet end.
[0034] Working principle:
[0035] The water medium with a certain pressure is filtered by the primary filter to remove large particle impurities before entering the water inlet, the filtered pressure water enters the water spraying channel through the secondary water filter, and the compressed air is filtered by the primary filter to remove large particle impurities before entering the air inlet, the filtered compressed air enters the air spraying channel through the secondary gas filter, the pressure water enters the Y-shaped water distributor from the water spraying pipe, and the Y-shaped jet is formed around the center to perform primary atomization, and then the compressed air from the air pipe in the axial direction is fully mixed to perform secondary atomization, and the gas-water mixture with a certain pressure enters the mixing cavity of the mixer and is sprayed out of the nozzle; since the gas and water are both filtered by the secondary filter and the filter holes are circular, large particle impurities and long strip impurities can be effectively intercepted, the blocking phenomenon can be effectively avoided, the spraying impact force can be ensured, the consumption of compressed air energy can be saved, and the cooling efficiency can be improved.
[0036] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.
Claims
1. A two-stage anti-clogging nozzle for slab continuous casting, comprising a nozzle seat, wherein the nozzle seat has a water inlet and an air inlet located on the same plane, a water spray channel is provided inside the nozzle seat, a water spray pipe is connected to the front part of the water spray channel, a stepped hole is provided at the front end of the water spray channel, an air spray pipe is connected to the front part of the stepped hole, the water spray pipe is located inside the air spray pipe and the axes of the two coincide, the annular space formed between the air spray pipe and the water spray pipe is the air spray channel, the water inlet is connected to the rear part of the water spray channel, the air inlet is connected to the rear part of the air spray channel, a Y-type water distributor is installed at the front end of the water spray pipe, a mixer is provided inside the front end of the air spray pipe, a nozzle is installed at the front end of the air spray pipe, a water throttling connector is provided inside the water inlet, and an air throttling connector is provided inside the air inlet, characterized in that... Both the water inlet and the air inlet are equipped with a primary filter located outside the nozzle seat. The rear end of the water spray channel is equipped with a secondary water filter located below the water inlet, and the rear end of the air spray channel is equipped with a secondary air filter located below the air inlet.
2. The two-stage anti-clogging nozzle for slab continuous casting according to claim 1, characterized in that, The primary filter includes a primary filter body, which has a filter chamber inside. The side walls and front end of the primary filter body are provided with several circular filter holes. The rear end of the primary filter body is connected to the inner walls of the water inlet and the air inlet by threads.
3. The two-stage anti-clogging nozzle for slab continuous casting according to claim 1, characterized in that, The secondary water filter includes a filter tube and a connector. The filter tube has several circular water filtration holes on its wall. The outer wall of the front end of the connector is connected to the inner wall of the water spray channel by a thread.
4. A two-stage anti-clogging nozzle for slab continuous casting according to claim 3, characterized in that, The axis of the filter pipe coincides with the axis of the spray pipe, and a water throttling connector is provided between the filter pipe and the spray pipe.
5. A two-stage anti-clogging nozzle for slab continuous casting according to claim 3, characterized in that, The secondary water filter is an integrated secondary water filter, and the filter tube and connector are an integral structure.
6. A two-stage anti-clogging nozzle for slab continuous casting according to claim 3, characterized in that, The secondary water filter is a split-type secondary water filter. The front end of the connector is provided with an installation hole, the rear end of the installation hole is closed, and the rear end of the filter tube is matched with the installation hole.
7. A two-stage anti-clogging nozzle for slab continuous casting according to claim 1, characterized in that, The secondary air filter includes a circular tube body with several circular air filter holes on the tube wall. The circular tube body is fitted around the water spray pipe with the axes of the two coinciding.
8. A two-stage anti-clogging nozzle for slab continuous casting according to claim 1, characterized in that, The Y-type water distributor includes a water distributor body, with an inlet hole at the center of the water distributor body. Several downward-sloping water distribution holes are evenly distributed around the water distributor body, and the water distribution holes are symmetrically arranged relative to the inlet hole. The upper end of the water distribution holes is connected to the inlet hole.
9. A two-stage anti-clogging nozzle for slab continuous casting according to claim 1, characterized in that, A pin hole is provided on the side wall of the nozzle seat, and a pin is provided in the pin hole. The lower end of the pin locks the outer wall of the water spray pipe.
10. A two-stage anti-clogging nozzle for slab continuous casting according to claim 1, characterized in that, The nozzle has an elliptical flow stabilizing cavity located at the outlet end.