CN211248319U - Air washing water gap - Google Patents
Air washing water gap Download PDFInfo
- Publication number
- CN211248319U CN211248319U CN201922029113.5U CN201922029113U CN211248319U CN 211248319 U CN211248319 U CN 211248319U CN 201922029113 U CN201922029113 U CN 201922029113U CN 211248319 U CN211248319 U CN 211248319U
- Authority
- CN
- China
- Prior art keywords
- nozzle
- wall
- refractory material
- gas
- steel sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
A gas washing nozzle comprises a hollow tubular nozzle body and a bell mouth arranged at the top of the nozzle body, wherein the bell mouth comprises a nozzle top inner wall and a nozzle top outer wall, and the diameter of the upper part of the nozzle top inner wall is larger than that of the lower part of the nozzle top inner wall; the inner wall of the top of the water gap is provided with a groove part, a porous refractory material is arranged in the groove part, the thickness of the top of the porous refractory material is smaller than that of the bottom of the porous refractory material, a first gas channel is formed between the top of the porous refractory material and the bottom of the groove part, and a second gas channel is formed between the bottom of the porous refractory material and the bottom of the groove part. The accuracy of air washing is further improved, the quality of steel can be improved, and the defect of air holes on the surface of the casting blank is avoided as much as possible.
Description
Technical Field
The utility model relates to a refractory material is used in the continuous casting, concretely relates to air purge mouth of a river.
Background
In the continuous casting operation, molten steel is generally poured into a tundish through a long nozzle at the bottom of the ladle, and a bagged loose covering agent is added into the tundish after the molten steel in the tundish reaches a certain height. After a period of time, the covering agent is melted on the surface of the molten steel in the tundish and the molten steel is completely covered, and at the moment, the molten steel in the tundish is completely isolated from the atmosphere, so that secondary oxidation can not occur any more. Meanwhile, molten steel enters the crystallizer through a submerged nozzle below the tundish, and the molten steel forms a casting blank after passing through the crystallizer.
The water gap for continuous casting has the functions of preventing secondary oxidation and splashing of molten steel, adjusting the pouring speed of the molten steel, promoting floating of impurities in the steel, preventing casting powder from being involved in steel billets and the like. Gas wash nozzles are a type of tundish casting nozzle for continuous casting of steel, the inner wall of which is porous refractory material. When the air-washing water gap is poured, argon is introduced from the outside and blown out through the porous fire-resistant layer on the inner wall, so that an air film is formed between the water gap wall and molten steel, the molten steel near the inner wall is stirred, and precipitates in the molten steel are prevented from being deposited on the inner wall of the water gap to block the normal pouring.
However, the inert gas is introduced into the water gap, so that the blockage of the water gap can be prevented, the upward floating separation of impurities in the tundish and the crystallizer can be promoted, and the improvement of the quality of steel is facilitated. On the other hand, if the blow amount is too large, there is a possibility that a void defect may be caused on the surface of the cast slab. The argon blowing anti-blocking strength is difficult to control, and the argon blowing amount is too large, so that subcutaneous pinholes are easy to appear on the casting blank, and the quality of the casting blank is influenced; if the argon blowing is insufficient, the submerged nozzle can be blocked.
SUMMERY OF THE UTILITY MODEL
In view of above situation, in order to solve the problem that above-mentioned technique exists, the utility model provides a gas washing mouth of a river can further improve the accurate nature of gas washing, can do benefit to the quality of improving the steel, avoids arousing the gas pocket defect on casting blank surface as far as possible again.
The gas washing nozzle comprises a hollow tubular nozzle body and a bell mouth arranged at the top of the nozzle body, wherein the bell mouth comprises a nozzle top inner wall and a nozzle top outer wall, and the diameter of the upper part of the nozzle top inner wall is larger than that of the lower part of the nozzle top inner wall; the inner wall of the top of the water gap is provided with a groove part, a porous refractory material is arranged in the groove part, the thickness of the top of the porous refractory material is smaller than that of the bottom of the porous refractory material, a first gas channel is formed between the top of the porous refractory material and the bottom of the groove part, and a second gas channel is formed between the bottom of the porous refractory material and the bottom of the groove part.
The first gas channel and the second gas channel penetrate through the porous refractory material to introduce inert gas into the water gap, so that the blockage of the water gap can be prevented, the upward floating separation of impurities in the tundish and the crystallizer can be promoted, and the improvement of the steel quality is facilitated. Because the first gas channel and the second gas channel are arranged in a partition way, the wall thickness of the porous refractory material is different, and the formed upper part has larger ventilation amount, so that the molten steel at the water inlet can be promoted to prevent blockage and play other roles. Meanwhile, the excessive blowing amount is avoided at the lower part, and the defect of air holes on the surface of the casting blank is avoided on the basis of strengthening the air washing effect. The accuracy of air washing is further improved through the improvement, the quality of steel can be improved, and the defect of air holes on the surface of a casting blank is avoided as much as possible.
Preferably, an air inlet is arranged in the bell mouth, one end of the air inlet penetrates through the groove bottom of the groove portion and is communicated with the first air channel and the second air channel, and the other end of the air inlet penetrates through the outer wall of the top of the water gap of the bell mouth. Being convenient for let in argon gas, the setting of air inlet position does benefit to simultaneously to first gas passage and second gas passage air feed.
Preferably, an argon pipe is arranged in the air inlet.
Preferably, a head steel sleeve is further arranged outside the bell mouth, the head steel sleeve is wrapped on the outer wall of the top of the water gap, and at least one part of the bottom of the head steel sleeve is positioned below the connecting part of the top wall connecting part and the outer wall of the water gap body; the argon pipe penetrates through a mounting hole formed in the head steel sleeve, and a pipe orifice at one end of the argon pipe is located outside the head steel sleeve and is communicated with an external gas supply device. On the one hand, the head steel sleeve and the argon pipe are convenient to set, and on the other hand, the stable and reliable connection of the argon pipe is also facilitated.
Preferably, the argon pipe is connected with the head steel sleeve in a welding mode. The setting operation is convenient.
Preferably, two multipurpose lugs are further arranged on the outer side of the head steel sleeve, the argon pipe is connected with the head steel sleeve between the two multipurpose lugs, and the argon pipe is perpendicular to the multipurpose lugs. Avoid the mutual interference of the two, also be convenient for carry.
Preferably, the porous refractory material is a mullite porous brick.
Preferably, the top and the bottom of the porous refractory material are respectively provided with a top porous fixing part and a bottom porous fixing part, and the top porous fixing part and the bottom porous fixing part are respectively in contact with the groove bottoms of the groove parts. The position of the porous refractory material in the bell mouth is convenient to fix, and the space of the first gas channel and the second gas channel is stabilized. The porous refractory material can be added as an insert when the water gap is manufactured after being manufactured and molded, or can be manufactured as a split part which is embedded after the water gap is manufactured and is sealed and fixed through a sealing material.
After the technology provided by the utility model, according to the utility model discloses the gas washing mouth of a river has following beneficial effect: the first gas channel and the second gas channel penetrate through the porous refractory material to introduce inert gas into the water gap, so that the blockage of the water gap can be prevented, the upward floating separation of impurities in the tundish and the crystallizer can be promoted, and the improvement of the steel quality is facilitated. Because the first gas channel and the second gas channel are arranged in a partition way, the wall thickness of the porous refractory material is different, and the formed upper part has larger ventilation amount, so that the molten steel at the water inlet can be promoted to prevent blockage and play other roles. Meanwhile, the excessive blowing amount is avoided at the lower part, and the defect of air holes on the surface of the casting blank is avoided on the basis of strengthening the air washing effect. The accuracy of air washing is further improved through the improvement, the quality of steel can be improved, and the defect of air holes on the surface of a casting blank is avoided as much as possible.
Drawings
Fig. 1 is a front view of a nozzle of embodiment 1 of the present application;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
fig. 3 is a perspective view of a nozzle in accordance with embodiment 1 of the present application;
fig. 4 is a structural diagram of a nozzle arrangement frame and a nozzle in cooperation in embodiment 1 of the present application;
fig. 5 is a structural view of a nozzle placement frame and a nozzle used in cooperation in embodiment 2 of the present application;
fig. 6 is a front view of the nozzle of embodiment 3 of the present application;
FIG. 7 is a cross-sectional view B-B of FIG. 2;
fig. 8 is a perspective view of a nozzle in accordance with embodiment 3 of the present application.
Description of reference numerals:
Horn mouth 2 steel bushing horizontal part 34
Inner connecting segment 210 porous refractory 5
Outer connecting arc segment 220 top porous fixation 501
Top wall vertical portion 221 bottom porous retainer portion 502
Argon pipe 6 of steel sleeve vertical part 31
Air inlet 60 of steel sleeve connection 32
Shifting fork 86 of slag line reinforcing part 7
Reinforcing portion connecting arc segment 70 fork 860
First placing table 81 shifting fork connecting rod 862
First placing arc groove 810 shifting fork driving rod 863
Shifting fork fixing seat 87 with second placing arc groove 820
Detailed Description
The present invention will be described in further detail with reference to embodiments shown in the drawings. The described embodiments include various specific details to aid understanding, but they are to be construed as merely illustrative, and not restrictive of all embodiments of the invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. Meanwhile, in order to make the description more clear and concise, a detailed description of functions and configurations well known in the art will be omitted.
Example 1
As shown in fig. 1 to 4, a nozzle comprises a hollow tubular nozzle body 1 and a bell mouth 2 arranged at the top of the nozzle body 1, wherein the bell mouth 2 comprises a nozzle top inner wall 21 and a nozzle top outer wall 22, and the diameter of the upper part of the nozzle top inner wall 21 is larger than that of the lower part of the nozzle top inner wall 21; the outer wall 22 of the nozzle top comprises a top wall vertical part 221 and a top wall connecting part 222, the top wall connecting part 222 is respectively connected with the top wall vertical part 221 and the outer wall of the nozzle body 1, the connecting part of the top wall connecting part 222 and the top wall vertical part 221 is higher than the connecting part of the inner wall 21 of the nozzle top and the inner wall of the nozzle body 1, and the connecting part of the top wall connecting part 222 and the outer wall of the nozzle body 1 is lower than the connecting part of the inner wall 21 of the nozzle top and the inner wall of the nozzle body 1.
The connecting part of the inner wall 21 of the top of the water gap and the inner wall of the water gap body 1 is provided with a smooth inner connecting arc section 210.
The connecting part of the top wall connecting part 222 and the outer wall of the nozzle body 1 is provided with a smooth outer connecting arc section 220.
Through the improvement to the concrete structure of bellmouth and with mouth of a river body structural relationship, make the connecting portion of bellmouth and mouth of a river body promptly the turning point of the inner wall of the or called neck of reducing position and outer wall all be on same straight line, avoided stress concentration, increased the thickness at reducing position relatively simultaneously, generally improved the intensity at mouth of a river reducing position, avoided producing reducing position (neck) fracture phenomenon, improve mouth of a river life.
A head steel sleeve 3 is further arranged outside the bell mouth 2, the head steel sleeve 3 is wrapped on the outer wall 22 at the top of the water gap, and at least one part of the bottom of the head steel sleeve 3 is positioned below the connecting part of the top wall connecting part 222 and the outer wall of the water gap body 1.
The head steel sleeve 3 comprises a steel sleeve vertical part 31 wrapped outside the top wall vertical part 221, a steel sleeve connecting part 32 wrapped outside the top connecting part 222, and a steel sleeve reinforcing part 33 wrapped on the outer wall of the nozzle body 1 below the connecting part of the top wall connecting part 222 and the outer wall of the nozzle body 1.
The top of head steel bushing 3 still is equipped with steel bushing horizontal part 34, steel bushing horizontal part 34 laminating sets up the top of bellmouth 2.
The steel jacket horizontal portion 34 is welded to the top of the steel jacket vertical portion 31.
Two multipurpose ears 4 are arranged on the outer side of the head steel sleeve 3.
The multipurpose ears 4 are symmetrically welded on the outer side of the vertical part of the head steel sleeve 3.
Through the setting and the concrete structure of head steel bushing, effectively protect and strengthened the structure of mouth of a river top horn mouth and with the position of being connected of mouth of a river body, improved the intensity at mouth of a river reducing position, avoid producing reducing position (neck) fracture phenomenon, improve mouth of a river life. The steel bushing reinforcing part is directly matched with the steel bushing connecting part to provide reliable protection for the variable diameter part, and the steel bushing horizontal part is favorable for the reliability of the integral structure of the head steel bushing and is convenient to install and set. The iron ring-shaped multipurpose ears can be used for facilitating storage, carrying, taking, placing, installation, fixation on matched equipment and the like, and the use convenience is improved.
Further, the air conditioner is provided with a fan,
the inner wall 21 at the top of the water gap is provided with a groove part 50, the groove part 50 is internally provided with a porous refractory material 5, the thickness of the top of the porous refractory material 5 is smaller than that of the bottom of the porous refractory material 5, a first gas channel 51 is formed between the top of the porous refractory material 5 and the bottom of the groove part 50, and a second gas channel 52 is formed between the bottom of the porous refractory material 5 and the bottom of the groove part 50.
The first gas channel and the second gas channel penetrate through the porous refractory material to introduce inert gas into the water gap, so that the blockage of the water gap can be prevented, the upward floating separation of impurities in the tundish and the crystallizer can be promoted, and the improvement of the steel quality is facilitated. Because the first gas channel and the second gas channel are arranged in a partition way, the wall thickness of the porous refractory material is different, and the formed upper part has larger ventilation amount, so that the molten steel at the water inlet can be promoted to prevent blockage and play other roles. Meanwhile, the excessive blowing amount is avoided at the lower part, and the defect of air holes on the surface of the casting blank is avoided on the basis of strengthening the air washing effect. The accuracy of air washing is further improved through the improvement, the quality of steel can be improved, and the defect of air holes on the surface of a casting blank is avoided as much as possible.
An air inlet 60 is arranged in the bell mouth 2, one end of the air inlet 60 penetrates through the bottom of the groove portion 50 and is communicated with the first air channel 51 and the second air channel 52, and the other end of the air inlet 60 penetrates through the outer wall 22 at the top of the nozzle of the bell mouth 2. Being convenient for let in argon gas, the setting of air inlet position does benefit to simultaneously to first gas passage and second gas passage air feed.
An argon pipe 6 is arranged in the air inlet 60.
A head steel sleeve 3 is further arranged outside the bell mouth 2, the head steel sleeve 3 is wrapped on the outer wall 22 at the top of the water gap, and at least one part of the bottom of the head steel sleeve 3 is positioned below the connecting part of the top wall connecting part 222 and the outer wall of the water gap body 1; the argon pipe 6 penetrates through a mounting hole formed in the head steel sleeve 3, and a pipe opening at one end of the argon pipe 6 is located outside the head steel sleeve 3 and communicated with an external air supply device. On the one hand, the head steel sleeve and the argon pipe are convenient to set, and on the other hand, the stable and reliable connection of the argon pipe is also facilitated.
The argon pipe 6 is connected with the head steel sleeve 3 in a welding mode. The setting operation is convenient.
The outer side of the head steel sleeve 3 is further provided with two multipurpose lugs 4, the argon pipe 6 is connected with the head steel sleeve 3 between the two multipurpose lugs 4, and the argon pipe 6 is perpendicular to the multipurpose lugs 4. Avoid the mutual interference of the two, also be convenient for carry.
The porous refractory material 5 is a mullite porous brick.
The porous refractory material 5 is provided with a top porous fixing portion 501 and a bottom porous fixing portion 502 at the top and bottom thereof, respectively, and the top porous fixing portion 501 and the bottom porous fixing portion 502 are in contact with the bottom of the groove portion 50, respectively. The position of the porous refractory material in the bell mouth is convenient to fix, and the space of the first gas channel and the second gas channel is stabilized. The porous refractory material can be added as an insert when the water gap is manufactured after being manufactured and molded, or can be manufactured as a split part which is embedded after the water gap is manufactured and is sealed and fixed through a sealing material.
Further, the air conditioner is provided with a fan,
the embodiment also provides a nozzle placing frame matched with the nozzle, which comprises a placing frame base 80, wherein a first placing table 81 is arranged on the placing frame base 80, and a first placing arc groove 810 matched with the shape of the nozzle body 1 of the nozzle to be placed is arranged on the first placing table 81; the placing frame base 80 is further provided with a second placing table 82, and the second placing table 82 is provided with a second placing arc groove 820 matched with the shape of the nozzle top outer wall 22 of the nozzle to be placed or the head steel sleeve 3 arranged outside the nozzle top outer wall 22.
Two positioning platforms 83 are arranged on the second placing platform 82, and a second placing arc groove 820 matched with the head steel sleeve 3 of the water gap to be placed in shape is arranged between the positioning platforms 83; the positioning platforms 83 are respectively provided with positioning columns 830, and the upper parts of the positioning columns 830 are arranged in the multipurpose ears 4 arranged outside the head steel sleeve 3 in a penetrating manner. Through setting up first putting platform and second putting platform, can pertinence ground support the different positions in mouth of a river, prevent roll and collision to place the mouth of a river steadily, and take convenient to use. Through setting up the location cylinder and using with the cooperation of multi-purpose ear, can place the mouth of a river more reliable and more stable, avoid rocking to can effectively protect argon pipe position.
The top of the positioning cylinder 830 is provided with a round head. The multipurpose ear cap is convenient to be arranged on the positioning cylinder.
The placing frame base 80 is a plate-shaped base, and the first placing table 81 and the second placing table 82 are fixed on the plate-shaped base through welding or screw connection. The placing frame can be manufactured more simply and conveniently, and the structure is stable and reliable.
The placing frame base 80 is a frame type base, and the first placing table 81 and the second placing table 82 are fixed on a support rod piece arranged on the frame type base through welding or screw connection. Can form through angle steel or channel-section steel welding, it is more convenient to make, and first putting platform and second putting platform can be fixed on frame construction's both sides, also can fix on the connecting rod that the centre set up. The frame type structure also brings convenience for hoisting, besides integral hoisting to the plate-shaped base, the hoisting rope can be wound on angle steel or channel steel on the frame, and the field work is flexible.
The periphery or four corners of the placing frame base 80 are provided with wall boards or a plurality of upright posts. The wall plate or the upright post is arranged, so that on one hand, an outer protection structure can be formed, and the water gap is ensured not to be collided from the outside; meanwhile, the water gap placing frames can be stacked, and the base on the upper layer is placed at the top end of the wallboard or the stand column, so that the storage and transportation efficiency is improved.
The application the mouth of a river structure mainly be applicable to the quartz mouth of a river, also can be used to the aluminium carbon mouth of a river, need carry out corresponding technology according to the material characteristic when designing the mould and handle.
Example 2
As shown in fig. 5, the difference between this embodiment and embodiment 1 is that a fork 86 capable of rotating relative to the rack base 80 is further disposed on the rack base 80, the fork 86 has a fork opening 860, the fork opening 860 is disposed below the multi-purpose ear 4, and the positioning cylinder 830 is located in the fork opening 860.
A shifting fork fixing seat 87 is arranged on the placing frame base 80, and a shifting fork shaft 870 is arranged in the shifting fork fixing seat 87 through a bearing; the shifting fork 86 comprises a shifting fork sleeve 861 provided with a mounting hole, a shifting fork connecting rod 862 and a shifting fork driving rod 863 are respectively connected to the shifting fork sleeve 861, and a fork opening 860 is arranged at the end part of the shifting fork connecting rod 862; the fork cover 861 is mounted on the fork shaft 870 through a mounting hole thereof. The shifting fork device is convenient to fix and operate.
The shift fork driving rod 863 is provided with a shift fork operating plate 864. The shifting fork driving rod pressing device can provide a larger operation area on the basis of the shifting fork driving rod, and is beneficial to pressing or treading the shifting fork driving rod.
The fork shaft 870 is provided with two forks 86, and fork openings 860 of the two forks 86 are respectively positioned below the multipurpose lugs 4 on the two positioning cylinders 830; the fork driving rods 863 of the two forks 86 are provided with an integrated fork operating plate 864. Do benefit to and push down simultaneously or step on the shift fork actuating lever to lift up multi-purpose ear from the location cylinder from both sides simultaneously, be convenient for take and use the mouth of a river.
Through setting up first putting platform and second putting platform, can pertinence ground support the different positions in mouth of a river, prevent roll and collision to place the mouth of a river steadily, and take convenient to use. Through setting up the location cylinder and using with the cooperation of multi-purpose ear, can place the mouth of a river more reliable and more stable, avoid rocking to can effectively protect argon pipe position.
Through establishing the shift fork, can be when putting the mouth of a river of taking on the frame from the mouth of a river, rotate through the drive shift fork and make the fork mouth upwards promote multi-purpose ear to provide ascending power to the mouth of a river, the mouth of a river of more being convenient for take. On the one hand, upward assistance is provided; on the other hand, because there is the location cylinder, must have a section vertical ascending distance so that multi-purpose ear and location cylinder break away from the contact when causing the mouth of a river of taking, cause the operation in this section distance can only have a application of force direction, can implement the application of force in this section distance by the shift fork through the setting of shift fork to convenient operation. After the multi-purpose ear is separated from the positioning cylinder, the operation in the free direction can be carried out as required.
The top of the positioning cylinder 830 is provided with a round head. The multipurpose ear cap is convenient to be arranged on the positioning cylinder.
The placing frame base 80 is a plate-shaped base, and the first placing table 81 and the second placing table 82 are fixed on the plate-shaped base through welding or screw connection. The placing frame can be manufactured more simply and conveniently, and the structure is stable and reliable.
The placing frame base 80 is a frame type base, and the first placing table 81 and the second placing table 82 are fixed on a support rod piece arranged on the frame type base through welding or screw connection. Can form through angle steel or channel-section steel welding, it is more convenient to make, and first putting platform and second putting platform can be fixed on frame construction's both sides, also can fix on the connecting rod that the centre set up. The frame type structure also brings convenience for hoisting, besides integral hoisting to the plate-shaped base, the hoisting rope can be wound on angle steel or channel steel on the frame, and the field work is flexible.
The periphery or four corners of the placing frame base 80 are provided with wall boards or a plurality of upright posts. The wall plate or the upright post is arranged, so that on one hand, an outer protection structure can be formed, and the water gap is ensured not to be collided from the outside; meanwhile, the water gap placing frames can be stacked, and the base on the upper layer is placed at the top end of the wallboard or the stand column, so that the storage and transportation efficiency is improved.
Example 3
As shown in fig. 6 to 8, the present embodiment is different from embodiment 1 or 2 in that the outer wall of the nozzle body 1 is further provided with a protruding annular slag line reinforced part 7, and the slag line reinforced part 7 is arranged at a middle lower part of the nozzle body 1.
The slag line reinforcing part 7 is a protrusion which is arc-shaped along the axial direction of the nozzle body 1, and reinforcing part connecting arc sections 70 which are smoothly connected with other parts of the nozzle body 1 are arranged at the upper end and the lower end of the slag line reinforcing part 7.
The slag line reinforcing part 7 and the water gap body 1 are of an integral structure.
By arranging the annular slag line reinforcing part, the erosion bearing capacity of the water gap is improved under the condition that other technological conditions are not changed, and the service life of the water gap is prolonged as much as possible. The slag line reinforcing part is arranged at the middle lower part of the nozzle body, so that the erosion bearing capacity of the nozzle can be improved, and the gap between the nozzle and the wall of the crystallizer can be ensured as much as possible. Through the arc-shaped arrangement of the slag line reinforcing part and the arrangement of the connecting arc section, the smoothness of the surface of the water gap is ensured, and steel hanging or cold steel formation is avoided. The slag line reinforcing part realizes the integrated structure with the nozzle body through transforming the mould, does not additionally increase process or materials, does not need the cooperation of other equipment in the use, and the cost of manufacture and use is lower, can independently low-cost implement to refractory material producer. Of course, in actual use, the position of the slag line can be changed for many times through the slag line changing process and the lifting process, and the service life is further prolonged on the basis.
The terms "upper", "lower" or "above", "below" or the like are used herein in a relative relationship with respect to a normal use in a placed state, i.e., a positional relationship as generally shown in the drawings of the present application. When the placement state changes, for example, when the placement state is turned over, the corresponding positional relationship should be changed accordingly to understand or implement the technical solution of the present application.
Claims (8)
1. The gas washing nozzle is characterized by comprising a hollow tubular nozzle body (1) and a bell mouth (2) arranged at the top of the nozzle body (1), wherein the bell mouth (2) comprises a nozzle top inner wall (21) and a nozzle top outer wall (22), the nozzle top outer wall (22) comprises a top wall connecting part (222), the top wall connecting part (222) is connected with the outer wall of the nozzle body (1), and the diameter of the upper part of the nozzle top inner wall (21) is larger than that of the lower part of the nozzle top inner wall (21); the novel gate nozzle is characterized in that a groove portion (50) is formed in the inner wall (21) of the top of the gate nozzle, a porous refractory material (5) is arranged in the groove portion (50), the thickness of the top of the porous refractory material (5) is smaller than that of the bottom of the porous refractory material (5), a first gas channel (51) is formed between the top of the porous refractory material (5) and the bottom of the groove portion (50), and a second gas channel (52) is formed between the bottom of the porous refractory material (5) and the bottom of the groove portion (50).
2. A gas wash nozzle as claimed in claim 1, wherein a gas inlet (60) is provided in said bell mouth (2), one end of said gas inlet (60) penetrating the bottom of said recessed portion (50) and communicating with said first and second gas passages (51, 52), the other end of said gas inlet (60) penetrating the nozzle top outer wall (22) of said bell mouth (2).
3. A gas wash nozzle as claimed in claim 2, characterised in that an argon tube (6) is provided in the gas inlet (60).
4. The gas washing nozzle according to claim 3, characterized in that a head steel sleeve (3) is further arranged outside the bell mouth (2), the head steel sleeve (3) is wrapped on the outer wall (22) at the top of the nozzle, and at least a part of the bottom of the head steel sleeve (3) is positioned below the connecting part of the top wall connecting part (222) and the outer wall of the nozzle body (1); the argon pipe (6) penetrates through a mounting hole formed in the head steel sleeve (3), and a pipe orifice at one end of the argon pipe (6) is located outside the head steel sleeve (3) and communicated with an external gas supply device.
5. A gas washing nozzle according to claim 4, characterized in that the argon pipe (6) is welded to the head steel sleeve (3).
6. The gas washing water gap according to claim 4, characterized in that two multipurpose lugs (4) are further arranged on the outer side of the head steel sleeve (3), the argon pipe (6) is connected with the head steel sleeve (3) between the two multipurpose lugs (4), and the argon pipe (6) is perpendicular to the multipurpose lugs (4).
7. A gas wash nozzle as claimed in any one of claims 1 to 6, wherein the porous refractory material (5) is mullite brick.
8. A gas wash nozzle as claimed in any one of claims 1 to 6, wherein the porous refractory material (5) is provided with a top porous retaining portion (501) and a bottom porous retaining portion (502) at the top and bottom, respectively, and the top porous retaining portion (501) and the bottom porous retaining portion (502) are in contact with the bottom of the recessed portion (50), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922029113.5U CN211248319U (en) | 2019-11-22 | 2019-11-22 | Air washing water gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922029113.5U CN211248319U (en) | 2019-11-22 | 2019-11-22 | Air washing water gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211248319U true CN211248319U (en) | 2020-08-14 |
Family
ID=71966886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922029113.5U Active CN211248319U (en) | 2019-11-22 | 2019-11-22 | Air washing water gap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211248319U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113857470A (en) * | 2021-09-15 | 2021-12-31 | 昆明理工大学 | Water gap protection device for metallurgical container |
-
2019
- 2019-11-22 CN CN201922029113.5U patent/CN211248319U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113857470A (en) * | 2021-09-15 | 2021-12-31 | 昆明理工大学 | Water gap protection device for metallurgical container |
| CN113857470B (en) * | 2021-09-15 | 2022-12-16 | 昆明理工大学 | Water gap protection device for metallurgical container |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101342580B (en) | Vacuum casting mold apparatus capable of continuously manufacturing and cleaning fine equiax crystal casting ingot | |
| CN104364032B (en) | Method for manufacturing high-purity steel casting, and tundish | |
| CN106881457A (en) | Molten steel pours device and part is sealed with argon and the method that part carries out argon envelope is sealed using argon | |
| CN111136256A (en) | Molten steel continuous casting equipment and continuous casting method | |
| CN211248319U (en) | Air washing water gap | |
| US11684969B2 (en) | Tundish | |
| CN204842961U (en) | Get rid of immersion nozzle of inclusion | |
| CN211248317U (en) | Reinforced water gap | |
| CN211248316U (en) | Quartz water gap | |
| CN210877530U (en) | Frame is put at mouth of a river convenient to take | |
| CN210943045U (en) | Frame is put at mouth of a river | |
| CN210587055U (en) | Aluminum bar casting platform | |
| CN201728357U (en) | Magnesium alloy sacrificial anode pouring system | |
| CN201020531Y (en) | Stopper type fixed diameter nozzle quick-changing casting device | |
| JPH09308950A (en) | Long nozzle for continuous casting | |
| KR100986053B1 (en) | Well block for molten metal molding | |
| JP5082700B2 (en) | Steel continuous casting method | |
| CN115635072A (en) | Pouring device and method for stably controlling liquid level of tundish | |
| CN201442088U (en) | Deflection casting combined device for large square billet water gap | |
| CN110216273B (en) | Sealing device for direct pouring of refining ladle in vacuum state | |
| CN210730971U (en) | Tundish | |
| JPH08290261A (en) | Method and device for automatic metal pouring | |
| CN218361911U (en) | Device for improving quality of cast product | |
| CN213350795U (en) | Molten steel purification and storage device | |
| CN211367631U (en) | Refining ladle for direct pouring in vacuum state |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |