CN210711617U - Explosion-proof device for titanium slag smelting furnace charging pipe - Google Patents
Explosion-proof device for titanium slag smelting furnace charging pipe Download PDFInfo
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- CN210711617U CN210711617U CN201921753461.0U CN201921753461U CN210711617U CN 210711617 U CN210711617 U CN 210711617U CN 201921753461 U CN201921753461 U CN 201921753461U CN 210711617 U CN210711617 U CN 210711617U
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Abstract
The utility model relates to an explosion-proof device for titanium slag smelting furnace filling tube belongs to the reinforced technical field of electric arc furnace. A sleeve (2) is sleeved at a pressure relief opening of the feeding three-way pipe (1), and a sealing material (3) is filled in a gap between the sleeve (2) and the pressure relief opening; the anti-explosion device also comprises an anti-explosion cover (4), a bracket (11), a balancing rod (9) and a balancing weight (12), wherein the lower end of the anti-explosion cover (4) can extend into the sealing material (3); the upper end of the bracket (11) is connected with the balance rod (9), one end of the balance rod (9) is connected with the explosion-proof cover (4), the other end of the balance rod is connected with the balancing weight (12), and the clutch between the lower part of the explosion-proof cover (4) and the sealing material (3) can be realized by increasing or decreasing the balancing weight (12). The lower end of the explosion-proof cover (4) of the structure can be hermetically connected with the pressure relief opening, the explosion-proof cover (4), the balancing weight (12), the balancing rod (9) and the support (11) form a balance structure, the pressure relief opening is opened and closed through dynamic balance, and the service life of the feeding three-way pipe (1) is prolonged.
Description
Technical Field
The utility model relates to an explosion-proof device for titanium slag smelting furnace filling tube belongs to the reinforced technical field of electric arc furnace.
Background
Electric arc furnaces utilize high temperature melting of ores and metals produced by an electrode arc. When the gas discharge forms an electric arc, the energy is concentrated, and the temperature of the arc area is more than 3000 ℃. For smelting metal, the electric arc furnace has greater process flexibility than other steel furnaces, can effectively remove impurities such as sulfur, phosphorus and the like, has easily controlled furnace temperature and small equipment floor area, and is suitable for smelting high-quality alloy steel. The raw materials of the electric arc steel-making furnace are mainly solid scrap steel, and are added with alloy materials, pig iron for adjusting carbon content and the like, and direct reduced iron or a part of hot molten iron can be used, so that the selection range of the raw materials is wide; therefore, most of the steel grades can be smelted except for some ultra-low carbon grades, or grades and special alloy materials which must adopt special means such as vacuum treatment.
The raw materials are added into the furnace regularly along with the continuous change of the raw material form in the actual production process, the original design feeding points of a first-stage titanium slag smelting furnace of a steel titanium smelting plant are 4, the process progress needs 19 design points of two second-stage titanium slag smelting electric furnaces, the titanium slag smelting furnace enables an electric arc furnace to be in a special form of open arc smelting, the existing feeding pipe and a storage bin are connected through double-flange rubber flexible connection, the titanium slag smelting can not avoid material collapse positive pressure impact, the feeding pipe flexible connection is often damaged, the replacement time is long, and the production is influenced. And later optimization and transformation are carried out, a feeding pipe above the material nozzle is transformed into a feeding three-way pipe, and the lower end of the feeding three-way pipe is connected with a storage bin. One pipe orifice inclined above is a feeding port, the other pipe orifice above is a pressure relief port, and an explosion-proof membrane is arranged on the pressure relief port to complete pressure relief. However, the explosion-proof membrane is a disposable part, and although the pressure relief effect is good, the replacement cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the rupture membrane of the charging tube pressure relief opening of the existing titanium slag smelting furnace is high in cost, and the disassembly and assembly are required to be repeated after the pressure relief is completed, thereby influencing the actual production.
The utility model provides a technical scheme that its technical problem adopted is: an explosion-proof device for a titanium slag smelting furnace charging pipe comprises a three-way charging pipe, wherein a pressure relief opening of the three-way charging pipe is horizontally arranged, a sleeve is sleeved on the outer wall of the opening of the pressure relief opening, the lower end of the sleeve is sealed, and a gap between the inner wall of the sleeve and the outer wall of the pressure relief opening is filled with a sealing material; the anti-explosion cover is of a tubular structure with the upper end sealed, and the lower end of the anti-explosion cover can be sleeved in a gap between the sleeve and the pressure relief opening and extends into the sealing material; the balancing device comprises a support, a balancing rod and a balancing weight, the upper end of the support is connected with the balancing rod, the lower end of the support can be fixed, one end of the balancing rod is connected with the outer wall of the sealing end of the explosion-proof cover, the other end of the balancing rod is connected with the balancing weight, and the increase and decrease of the balancing weight can realize the clutch of the lower part of the explosion-proof cover and the sealing.
The device further comprises a lifting rope, the middle of the balancing rod is fixedly connected with the upper end of the support, two ends of the lifting rope are respectively connected with the outer wall of the sealing end of the explosion-proof cover and the balancing weight, and the middle of the lifting rope can be hung on the balancing rod.
Further, in the above device, the balance bar comprises a plurality of cotter pins, a connecting plate and two symmetrically arranged supporting plates, the supporting plates are arranged at intervals through the cotter pins, the lifting ropes are hung on the cotter pins, the connecting plate is arranged on the same side of the two supporting plates and connected with the two supporting plates, and the supporting plates are connected with the upper end of the support through the connecting plate.
Furthermore, in the device, a pulley is sleeved in the middle of the cotter pin, and the lifting rope is hung on the pulley.
Furthermore, the number of the pulleys in the device is two, and the pulleys are arranged on the split pins at two ends of the supporting plate.
Furthermore, the device also comprises a connecting rod and a supporting guide piece, wherein one end of the connecting rod is connected with one end of the lifting rope, and the other end of the connecting rod is connected with the middle part of the outer wall of the sealing end of the explosion-proof cover; the supporting guide piece comprises a guide ring and a plurality of inverted L-shaped supporting rods, the upper end portions of the supporting rods are respectively connected with the outer wall of the guide ring, the supporting rods are arranged at intervals along the circumference of the outer wall of the guide ring, the lower ends of the supporting rods are connected with the sleeve, and the connecting rod penetrates through the guide ring and is in sliding connection with the guide ring.
Furthermore, in the device, the connecting rod is sleeved with a spring, the lower end of the spring is in contact with the outer wall of the sealing end of the explosion-proof cover, and the upper end of the spring is positioned on the inner side of the supporting rod.
In the device, a plurality of rib plates are arranged on the outer wall of the sealing end at the upper end of the explosion-proof cover at intervals, and refractory materials are laid on the inner wall of the explosion-proof cover.
Wherein, the middle part of the balancing pole in the device is hinged with the upper end of the bracket.
Wherein, the sealing material in the device is fine sand.
The utility model has the advantages that: the device can prolong the service life of the material pipe, shorten the overhaul time, effectively reduce the production cost and be simple to operate and convenient to maintain. The lower end of the explosion-proof cover can be connected with the pressure relief opening in a sealing mode, the explosion-proof cover, the balancing weight, the balancing rod and the support form a balance structure, and the pressure relief opening is opened and closed through dynamic balance, so that the structure can be used repeatedly, and the service life of the feeding three-way pipe is prolonged greatly. Simultaneously, the explosion-proof cover is connected with the balancing weight through the lifting rope according to the structural design principle, the balancing weight is carried out through the calculated balancing weight ratio, when the positive pressure of the collapsed material in the electric arc furnace is larger than or equal to 200Pa, the smoke in the furnace directly impacts the explosion-proof cover of the feeding pipe, the explosion-proof cover is opened for pressure relief, the explosion-proof cover is buffered through the spring and automatically resets, and the lower end of the explosion-proof cover is inserted into fine sand to play a role in. After the consumption of the fine sand is reduced, post operators can supplement the fine sand by utilizing the furnace time gap, the explosion-proof effect is good, and the equipment maintenance cost and the labor intensity of workers can be effectively reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the present invention with a guide member;
FIG. 3 is a schematic structural view of the explosion-proof cover of the present invention laid with refractory material;
FIG. 4 is a schematic view of the connection structure of the bracket and the balance bar of the present invention;
fig. 5 is a schematic view of the present invention in which fig. 3 is provided with a guide member;
fig. 6 is a schematic top view of the structure of fig. 5 according to the present invention;
fig. 7 is a schematic structural diagram of the counterweight of the present invention.
Labeled as: the device comprises a feeding three-way pipe 1, a sleeve 2, a sealing material 3, an explosion-proof cover 4, a support rod 5, a connecting rod 6, a guide ring 7, a lifting rope 8, a balancing rod 9, a support plate 91, a cotter pin 92, a pulley 10, a support 11 and a counterweight 12.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 to 7, the utility model discloses an explosion-proof device for a titanium slag smelting furnace charging tube, which comprises a charging three-way pipe 1, wherein a pressure relief opening of the charging three-way pipe 1 is horizontally arranged, a sleeve 2 is sleeved on the outer wall of the pressure relief opening, the lower end of the sleeve 2 is sealed, and a sealing material 3 is filled in a gap between the inner wall of the sleeve 2 and the outer wall of the pressure relief opening; the anti-explosion cover 4 is of a tubular structure with the upper end sealed, and the lower end of the anti-explosion cover 4 can be sleeved into a gap between the sleeve 2 and the pressure relief port and extend into the sealing material 3; the balancing device comprises a support 11, a balancing rod 9 and a balancing weight 12, wherein the upper end of the support 11 is connected with the balancing rod 9, the lower end of the support can be fixed, one end of the balancing rod 9 is connected with the outer wall of the sealing end of the explosion-proof cover 4, the other end of the balancing rod is connected with the balancing weight 12, and the lower part of the explosion-proof cover 4 and the clutch of the sealing material 3 can be realized by increasing or decreasing the balancing. As can be understood by the technical personnel in the field, the device can prolong the service life of the material pipe, shorten the overhaul time, effectively reduce the production cost and facilitate the operation and maintenance. This structure is equipped with lower extreme sealed sleeve pipe 2 outside the pressure release mouth cover to pack sealing material 3 in the clearance between sleeve pipe 2 and the pressure release mouth, insert sealing material 3 with 4 lower extremes of explosion-proof lid, thereby realize the closure to the pressure release mouth, constitute balance structure with explosion-proof lid 4, balancing weight 12, balancing pole 9 and support 11 simultaneously, can realize the separation and reunion of 4 lower parts of explosion-proof lid and sealing material 3 through increase and decrease balancing weight 12, realize the opening and closing of pressure release mouth promptly. Meanwhile, the structure adopts the explosion-proof cover 4 to directly cover the pressure relief opening, and the lower end of the explosion-proof cover 4 is inserted into the sealing material 3 to realize the sealing of the pressure relief opening, so that the device can be repeatedly used, and the production cost of prolonging the service life of the feeding three-way pipe 1 is greatly reduced. The sealing material 3 of the device mainly prevents high-pressure gas from overflowing during normal operation, so the particles of the sealing material 3 are fine and have good fluidity. Meanwhile, when the device is used, the weight ratio which needs to be calculated is used for balancing, the actual weight of the explosion-proof cover 4 is larger than the weight of the balancing weight 12, when the positive pressure of the collapsed material in the electric arc furnace is larger than or equal to 200Pa, high-temperature gas in the furnace directly rushes to the explosion-proof cover 4 to enable the explosion-proof cover 4 to be opened for pressure relief, and the explosion-proof cover 4 moves downwards under the action of self gravity after pressure relief is completed to enable the lower end of the explosion-proof cover 4 to be inserted into the sealing material 3, so that the. Meanwhile, the sealing material 3 is actually consumed, and post operators can supplement the sealing material by utilizing the furnace clearance. The explosion-proof effect of the device is good, and the equipment maintenance cost and the labor intensity of workers can be effectively reduced. The lower end of the bracket 11 of the device can be directly fixed with the furnace wall of the electric arc furnace, the ground or the outer wall of the charging three-way pipe 1.
Preferably, the device further comprises a lifting rope 8, the middle of the balance rod 9 is fixedly connected with the upper end of the support 11, two ends of the lifting rope 8 are respectively connected with the outer wall of the sealing end of the explosion-proof cover 4 and the balancing weight 12, and the middle of the lifting rope 8 can be hung on the balance rod 9. As can be understood by those skilled in the art, the device preferably realizes the opening and closing of the explosion-proof cover 4 through the lifting rope 8, specifically, the middle part of the balancing pole 9 is fixedly connected with the upper end of the bracket 11, meanwhile, the two ends of the lifting rope 8 are respectively connected with the outer wall of the sealing end of the explosion-proof cover 4 and the balancing weight 12, and then the middle part of the lifting rope 8 can be hung on the balancing pole 9, so that the lifting rope 8 is ensured not to slide off the balancing pole 9. It is preferable that the balance bar 9 is horizontally disposed after the middle portion of the balance bar 9 is fixedly connected to the upper end of the bracket 11. In order to facilitate hanging the counterweight 12, it is preferable that the counterweight 12 is provided with a strip-shaped groove 121, so that the counterweight 12 is in a scale pan structure and can be directly hung on the lifting rope 8.
Preferably, in the above device, the balancing bar 9 includes a plurality of cotter pins 92, a connecting plate and two symmetrically arranged supporting plates 91, the supporting plates 91 are arranged at intervals through the cotter pins 92, the lifting rope 8 is hung on the cotter pins 92, the connecting plate is arranged at the same side of the two supporting plates 91 and connected with the two supporting plates 91, and the supporting plates 91 are connected with the upper end of the bracket 11 through the connecting plate. It will be appreciated by those skilled in the art that the present device preferably has a particular configuration of the spreader beam 9 to facilitate the suspension and operation of the lifting line 8. Specifically include the backup pad 91 that a plurality of cotter pins 92, connecting plate and two symmetries set up, set up through cotter pin 92 interval between the backup pad 91, and lifting rope 8 hangs on cotter pin 92, and the connecting plate setting is connected with two backup pads 91 with one side of two backup pads 91, and backup pad 91 passes through the connecting plate to be connected with support 11 upper end.
Preferably, in the above device, a pulley 10 is sleeved in the middle of the cotter 92, and the lifting rope 8 is hung on the pulley 10. It will be appreciated by those skilled in the art that in order to reduce the friction of the lifting rope 8, the device preferably has a pulley 10 sleeved on the middle of the cotter pin 92, and the lifting rope 8 is hung on the pulley 10, so that the sliding friction of the lifting rope 8 is changed into rolling friction.
Preferably, the number of the pulleys 10 in the above device is two, and the pulleys are provided on the cotter pins 92 at both ends of the support plate 91. It will be understood by those skilled in the art that the present apparatus is only preferred for the number and arrangement positions of the pulleys 10, the number being two, and disposed on the cotter pins 92 at both ends of the support plate 91.
Preferably, the device also comprises a connecting rod 6 and a supporting guide piece, wherein one end of the connecting rod 6 is connected with one end of a lifting rope 8, and the other end of the connecting rod is connected with the middle part of the outer wall of the sealing end of the explosion-proof cover 4; the support guide piece comprises a guide ring 7 and a plurality of inverted L-shaped support rods 5, the upper end portions of the support rods 5 are respectively connected with the outer wall of the guide ring 7, the support rods 5 are arranged at intervals along the circumference of the outer wall of the guide ring 7, the lower ends of the support rods 5 are connected with the sleeve 2, and the connecting rod 6 penetrates through the guide ring 7 and is in sliding connection with the guide ring 7. As can be understood by those skilled in the art, in order to always ensure the vertical movement of the explosion-proof cover 4, the device preferably further comprises a connecting rod 6 and a supporting guide member, wherein one end of the connecting rod 6 is connected with one end of a lifting rope 8, the other end of the connecting rod is connected with the middle part of the outer wall of the sealing end of the explosion-proof cover 4, meanwhile, the connecting rod 6 penetrates through a guide ring 7 and is in sliding connection with the guide ring 7, the connection can be ensured to move axially along the guide ring 7, and the guide ring 7 is vertically arranged due to the horizontal arrangement of a pressure relief opening, so that the explosion-proof cover; in order to fix the guide ring 7, the upper end of the support rod 5 with the inverted-L-shaped structure is preferably connected with the outer wall of the guide ring 7, the support rods 5 are arranged at intervals along the circumference of the outer wall of the guide ring 7, and the lower end of the support rod 5 is connected with the sleeve 2, so that the guide ring 7 is fixed.
Preferably, in the above device, the connecting rod 6 is sleeved with a spring 13, the lower end of the spring 13 is in contact with the outer wall of the sealing end of the explosion-proof cover 4, and the upper end is located inside the supporting rod 5. It will be understood by those skilled in the art that in order to prevent the high-pressure gas from directly impacting the explosion-proof cover 4 against the support rod 5, impact damage is caused to the support rod 5. Therefore, the device is preferably provided with the spring 13 sleeved on the connecting rod 6, the lower end of the spring 13 is ensured to be in contact with the outer wall of the sealing end of the explosion-proof cover 4, and the upper end of the spring is positioned on the inner side of the supporting rod 5, so that the upper end of the spring can be in contact with the joint of the supporting rod 5 and the guide ring 7, and the buffering is realized. Meanwhile, the elastic force of the compressed spring can provide the acting force for the downward movement of the explosion-proof cover 4, so that the recovery of the explosion-proof cover 4 is realized. It is preferable that both ends of the spring are respectively in contact connection with the explosion-proof cover 4 and the lower end of the guide ring 7.
Preferably, in the device, a plurality of rib plates are arranged on the outer wall of the upper end sealing end of the explosion-proof cover 4 at intervals, and a refractory material 14 is laid on the inner wall of the explosion-proof cover 4. As can be understood by those skilled in the art, in order to prolong the service life of the explosion-proof cover 4, it is preferable that a plurality of ribs are provided at intervals on the outer wall of the upper end sealing end of the explosion-proof cover 4, and since the explosion-proof cover 4 is directly contacted with high-temperature gas, it is preferable that the inner wall of the explosion-proof cover 4 is laid with a refractory material 14.
Preferably, the balance bar 9 is hinged to the upper end of the bracket 11 at the middle part of the device. As can be understood by those skilled in the art, the device only prefers that the middle part of the balancing rod 9 is hinged with the upper end of the bracket 11, so that the whole balancing rod 9 is of a balance cross rod structure, and the dynamic balance of the balancing weight 12 and the explosion-proof cover 4 is realized.
Preferably, the sealing material 3 in the above apparatus is fine sand. It will be appreciated by those skilled in the art that the present device preferably has the sealing material 3 as fine sand. Because the pressure relief port is mainly high-temperature gas, in actual use, the fine sand particles are smaller, and the fluidity is better. Along with the play of the explosion-proof cover 4, the fine sand can quickly fill the gap between the explosion-proof cover 4 and the sleeve 2 and the pressure relief opening, so that the sealing effect is better.
Claims (10)
1. The utility model provides an explosion-proof equipment for titanium slag smelting furnace filling tube, includes reinforced three-way pipe (1), its characterized in that: a pressure relief opening of the feeding three-way pipe (1) is horizontally arranged, a sleeve (2) is sleeved on the outer wall of the opening of the pressure relief opening, the lower end of the sleeve (2) is sealed, and a gap between the inner wall of the sleeve (2) and the outer wall of the pressure relief opening is filled with a sealing material (3); the anti-explosion pressure relief valve further comprises an anti-explosion cover (4) and a balancing device, wherein the lower end of the anti-explosion cover (4) can be sleeved into a gap between the sleeve (2) and the pressure relief port and extends into the sealing material (3); the balancing device comprises a support (11), a balancing rod (9) and a balancing weight (12), the upper end of the support (11) is connected with the balancing rod (9), the lower end of the support can be fixed, one end of the balancing rod (9) is connected with the outer wall of the sealing end of the explosion-proof cover (4), the other end of the balancing rod is connected with the balancing weight (12), and the increase and decrease of the balancing weight (12) can realize the clutch between the lower part of the explosion-proof cover (4) and the sealing material (3).
2. The explosion-proof device for the feeding tube of the titanium slag smelting furnace according to the claim 1, characterized in that: still include lifting rope (8), balancing pole (9) middle part and support (11) upper end fixed connection, lifting rope (8) both ends are connected with explosion-proof cover (4) seal end outer wall and balancing weight (12) respectively, and lifting rope (8) middle part can be hung on balancing pole (9).
3. The explosion-proof device for the feeding pipe of the titanium slag smelting furnace according to the claim 2, characterized in that: the balance bar (9) comprises a plurality of cotter pins (92), a connecting plate and two symmetrical supporting plates (91), the supporting plates (91) are arranged at intervals through the cotter pins (92), the lifting ropes (8) are hung on the cotter pins (92), the connecting plate is arranged on the same side of the two supporting plates (91) and connected with the two supporting plates (91), and the supporting plates (91) are connected with the upper end of the support (11) through the connecting plate.
4. The explosion-proof device for the feeding tube of a titanium slag smelting furnace according to the claim 3, characterized in that: the middle part of the cotter pin (92) is sleeved with a pulley (10), and the lifting rope (8) is hung on the pulley (10).
5. The explosion-proof device for the feeding tube of the titanium slag smelting furnace according to the claim 4, characterized in that: the number of the pulleys (10) is two, and the pulleys are arranged on cotter pins (92) at two ends of the supporting plate (91).
6. The explosion-proof device for the feeding pipe of the titanium slag smelting furnace according to the claim 2, characterized in that: the anti-explosion device is characterized by further comprising a connecting rod (6) and a supporting guide piece, wherein one end of the connecting rod (6) is connected with one end of a lifting rope (8), and the other end of the connecting rod is connected with the middle part of the outer wall of the sealing end of the anti-explosion cover (4); the supporting guide piece comprises a guide ring (7) and a plurality of inverted L-shaped supporting rods (5), the upper end portions of the supporting rods (5) are connected with the outer wall of the guide ring (7) respectively, the supporting rods (5) are arranged at intervals along the circumference of the outer wall of the guide ring (7), the lower ends of the supporting rods (5) are connected with the sleeve (2), and the connecting rod (6) penetrates through the guide ring (7) and is in sliding connection with the guide ring (7).
7. The explosion-proof device for the feeding tube of the titanium slag smelting furnace according to the claim 6, characterized in that: the connecting rod (6) is sleeved with a spring (13), the lower end of the spring (13) is in contact with the outer wall of the sealing end of the explosion-proof cover (4), and the upper end of the spring is positioned on the inner side of the supporting rod (5).
8. The explosion-proof device for the feeding tube of the titanium slag smelting furnace according to the claim 1, characterized in that: a plurality of rib plates are arranged on the outer wall of the sealing end at the upper end of the explosion-proof cover (4) at intervals, and refractory materials (14) are laid on the inner wall of the explosion-proof cover (4).
9. The explosion-proof device for the feeding tube of the titanium slag smelting furnace according to the claim 1, characterized in that: the middle part of the balancing rod (9) is hinged with the upper end of the bracket (11).
10. The explosion-proof device for the feeding tube of the titanium slag smelting furnace according to the claim 1, characterized in that: the sealing material (3) is fine sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921753461.0U CN210711617U (en) | 2019-10-18 | 2019-10-18 | Explosion-proof device for titanium slag smelting furnace charging pipe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921753461.0U CN210711617U (en) | 2019-10-18 | 2019-10-18 | Explosion-proof device for titanium slag smelting furnace charging pipe |
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| CN210711617U true CN210711617U (en) | 2020-06-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110564913A (en) * | 2019-10-18 | 2019-12-13 | 攀钢集团钛业有限责任公司 | Explosion-proof device for titanium slag smelting furnace charging pipe |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110564913A (en) * | 2019-10-18 | 2019-12-13 | 攀钢集团钛业有限责任公司 | Explosion-proof device for titanium slag smelting furnace charging pipe |
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