CN216663135U - Accurate type blast furnace airtight box that inclines - Google Patents
Accurate type blast furnace airtight box that inclines Download PDFInfo
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- CN216663135U CN216663135U CN202122744385.0U CN202122744385U CN216663135U CN 216663135 U CN216663135 U CN 216663135U CN 202122744385 U CN202122744385 U CN 202122744385U CN 216663135 U CN216663135 U CN 216663135U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The utility model provides an accurate tilting blast furnace airtight box, which comprises a rotary cylinder, a fixed cylinder and a distribution chute, wherein the fixed cylinder is sleeved outside the rotary cylinder, the distribution chute is fixed at the bottom of the rotary cylinder through a connecting rod mechanism, and the accurate tilting blast furnace airtight box also comprises a rotary mechanism and a tilting mechanism; the tilting mechanism comprises a tilting motor, a threaded lead screw and a backing ring; the supporting ring is arranged in the inner cavity of the fixed cylinder body, and the supporting ring is coaxially arranged with the rotary cylinder body and the fixed cylinder body; three threaded holes in the vertical direction are uniformly distributed in the backing ring, and a threaded lead screw is arranged in each threaded hole; the top end of each threaded lead screw penetrates through the top plate of the fixed cylinder and then is in transmission connection with a tilting motor, and the bottom end of each threaded lead screw is installed on a lower bearing seat on the bottom plate of the fixed cylinder. The utility model realizes the accurate positioning of the tilting angle of the distribution chute and ensures the distribution effect of the blast furnace.
Description
Technical Field
The utility model relates to the technical field of blast furnace ironmaking, in particular to a precise tilting type blast furnace airtight box.
Background
The airtight box is key equipment in the production process of the blast furnace, and is mainly used for distributing materials in the blast furnace. Through the rotation function and the tilting function of the airtight box, the ironmaking raw materials are uniformly distributed in the furnace through the distribution chute, so that the balance and the stability of the combustion of the raw materials in the furnace are improved, and the stable production of the blast furnace is ensured.
Through the organic combination of the rotation function and the tilting function of the airtight box, different cloth forms can be realized, such as annular cloth, spiral cloth, point type cloth, fan-shaped cloth and the like. The distribution angle of the distribution chute is very critical to ensure the sufficient distribution and the uniform distribution of the raw materials and the long-term stable operation of the blast furnace. The actual distributing angle of the distributing chute of the blast furnace is the same as the design angle in the automatic distributing system, so that the correct judgment of blast furnace operators is directly influenced, and the final influence is whether the blast furnace can stably produce or not and whether the predicted target molten iron yield can be achieved or not. In fact, the distribution angle of the distribution chute cannot be visually determined, the manual work cannot find the distribution angle in time, and if the deviation of the distribution angle cannot be found in time, the yield of molten iron in the blast furnace is seriously influenced.
At present, most blast furnace airtight boxes used by domestic iron and steel enterprises are arranged in a differential tilting rotation mode, planetary differential speed reducers are used as power transmission mechanisms, a plurality of gear rings are arranged in the airtight boxes, the matching requirement among the gear rings is high, and the manufacturing cost is high. In addition, a common airtight box adopts a hydraulic cylinder to be tilting power, and due to the fact that the hydraulic cylinder has the problems of synchronization, untimely pressure release and the like, the accuracy of a tilting angle is poor, a distribution angle in the furnace deviates from a design angle, a hydraulic valve needs to be adjusted and maintained manually in time, maintenance needs to be carried out in a production halt mode, and continuous operation of the blast furnace is seriously influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the utility model aims to provide the accurate tilting type blast furnace airtight box.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:
a precise tilting blast furnace airtight box comprises a rotary cylinder, a fixed cylinder and a distribution chute, wherein the fixed cylinder is sleeved outside the rotary cylinder, the distribution chute is fixed at the bottom of the rotary cylinder through a connecting rod mechanism, and the precise tilting blast furnace airtight box also comprises a rotary mechanism and a tilting mechanism; the rotating mechanism comprises a large gear ring fixedly arranged on the outer wall of the rotating cylinder, a small gear meshed with the large gear ring and a rotating motor used for driving the small gear to rotate;
the tilting mechanism comprises a tilting motor, a threaded lead screw and a backing ring; the supporting ring is arranged in the inner cavity of the fixed cylinder body, and the supporting ring is coaxially arranged with the rotary cylinder body and the fixed cylinder body; three threaded holes in the vertical direction are uniformly distributed in the backing ring, and a threaded lead screw is arranged in each threaded hole; the top end of each threaded lead screw penetrates through the top plate of the fixed cylinder and is in transmission connection with a tilting motor, and the bottom end of each threaded lead screw is installed on a lower bearing seat on the bottom plate of the fixed cylinder; three sliding blocks are fixedly arranged on the supporting ring, and a sliding groove is formed in the inner side wall, close to the center of the supporting ring, of each sliding block; correspondingly, three vertical slide rails are uniformly distributed on the fixed cylinder inner side plate pointed by the front end of the slide block, and the slide rails are connected with the slide grooves in a sliding fit manner.
The utility model is further improved in that: the tail of the sliding block is fixed on the supporting ring at the inner side of the threaded hole.
The utility model is further improved in that: the thread screw is a trapezoidal thread screw, the tilting motor is a variable frequency motor with a brake, and a worm and gear reducer is further arranged between the variable frequency motor and the thread screw.
The utility model is further improved in that: and a ring groove used for connecting the connecting rod mechanism is formed in the inner side wall of the supporting ring close to the rotary cylinder.
The utility model is further improved in that: the connecting rod mechanism comprises a connecting arm used for connecting the distribution chute, an ear plate used for connecting the backing ring, a first connecting rod and a second connecting rod which are horizontally arranged between the connecting arm and the ear plate; the connecting arm and the lug plate are vertically arranged, the upper end of the lug plate is connected with the annular groove of the supporting ring in a sliding fit mode through the convex sliding protrusion, and the lower portion of the connecting arm is fixedly connected with the distribution chute.
The utility model is further improved in that: the first connecting rod is arranged right above the second connecting rod, and the first connecting rod and the second connecting rod penetrate through the fixed cylinder and the rotary cylinder.
The utility model is further improved in that: the through holes used for the first connecting rod and the second connecting rod to penetrate through on the fixed cylinder are round holes, and the through holes used for the first connecting rod to penetrate through on the rotary cylinder are arc-shaped long holes and are round holes.
Due to the adoption of the technical scheme, the utility model has the technical progress that:
the utility model provides an accurate tilting blast furnace airtight box, which takes a PLC (programmable logic controller) to drive a tilting motor as power, adopts the threaded fit of a backing ring and a threaded lead screw and the quick transmission of a connecting rod mechanism, realizes the accurate positioning of the tilting angle of a distribution chute, ensures that the actual distribution angle of the distribution chute is consistent with the design angle in an automatic distribution system, and ensures the distribution effect of a blast furnace.
The utility model has simple structure, reasonable design, high mechanical transmission efficiency and convenient and simple maintenance, and effectively solves the problems of high manufacturing cost of the differential gear tilting mechanism, incapability of accurately positioning the hydraulic cylinder form and the like in the prior art.
The adopted threaded screw rod is a trapezoidal threaded screw rod, the adopted tilting motor is a variable frequency motor with a brake, and the adopted speed reducer is a worm and gear speed reducer; because the trapezoidal thread and the worm gear speed reducer both have self-locking functions and are provided with the variable frequency motor with the brake, the aim of accurately positioning the cloth angle is fulfilled.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a connecting structure of a tilting mechanism and a link mechanism;
FIG. 3 is a schematic top view of the present invention;
FIG. 4 is a schematic sectional view taken along line A-A in FIG. 3;
FIG. 5 is a side view of the present invention;
FIG. 6 is a schematic cross-sectional view taken along line B-B of FIG. 5;
in the figure, 1 part of a rotary cylinder body, 2 parts of a fixed cylinder body, 3 parts of a distribution chute, 4-1 parts of a rotary motor, 4-2 parts of a pinion, 4-3 parts of a bull gear, 5-1 parts of a tilting motor, 5-2 parts of a threaded lead screw, 5-3 parts of a backing ring, 5-4 parts of a lower bearing seat, 5-5 parts of an upper bearing seat, 5-6 parts of a sliding block, 5-8 parts of a ring groove, 6-1 parts of a connecting arm, 6-2 parts of an ear plate, 6-3 parts of a first connecting rod, 6-4 parts of a second connecting rod, 6-5 parts of an arc-shaped long hole, 6-6 parts of a stay and 7 parts of an inspection port.
Detailed Description
The present invention is described in detail below with reference to the accompanying drawings.
An accurate tilting type blast furnace airtight box is shown in figures 1-6 and comprises a rotary cylinder body 1, a fixed cylinder body 2, a distribution chute 3, a connecting rod mechanism, a rotary mechanism and a tilting mechanism. The fixed cylinder body 2 is sleeved outside the rotary cylinder body 1, and the rotary cylinder body 1 and the fixed cylinder body 2 are connected through a bearing and can relatively independently perform circumferential rotation and up-and-down tilting; the bottom of the rotary cylinder body 1 is fixedly connected with the distribution chute 3 through two groups of symmetrically arranged link mechanisms, and the distribution chute 3 rotates and tilts along with the rotary cylinder body 1.
The rotating mechanism comprises a rotating motor 4-1, a pinion 4-2 and a large gear ring 4-3. The large gear ring 4-3 is fixedly welded on the outer wall of the rotary cylinder body 1, and the large gear ring 4-3 is meshed and connected with the small gear 4-2; and a driving shaft of the pinion 4-2 is in transmission connection with a power shaft of a rotating motor 4-1 arranged outside the fixed cylinder 2. And a rotary speed reducer is also arranged between a power shaft of the rotary motor 4-1 and a driving shaft of the pinion 4-2. When the rotating motor 4-1 works, the rotating motor 4-1 drives the pinion 4-2 to drive the large gear ring 4-3, and the large gear ring 4-3 drives the rotating cylinder 1 and the distribution chute 3 to rotate.
The tilting mechanism comprises a tilting motor 5-1, a threaded lead screw 5-2 and a backing ring 5-3. The support ring 5-3 is arranged in the inner cavity of the fixed cylinder body 2, and the support ring 5-3 is coaxially arranged with the rotary cylinder body 1 and the fixed cylinder body 2. Three threaded holes in the vertical direction are uniformly formed in the backing ring 5-3, and a threaded lead screw 5-2 is assembled in each threaded hole; the top end of each threaded lead screw 5-2 penetrates through the top plate of the fixed cylinder 2 and then is in transmission connection with a tilting motor 5-1, and the bottom end of each threaded lead screw 5-2 is installed on a lower bearing seat 5-4 on the bottom plate of the fixed cylinder 2. The supporting ring 5-3 is also fixedly provided with three sliding blocks 5-6, the tail parts of the sliding blocks 5-6 are welded on the supporting ring 5-3, the front ends of the sliding blocks 5-6 extend out of the supporting ring 5-3, and the sliding blocks 5-6 are provided with sliding grooves close to the inner side wall of the rotary cylinder body 1; correspondingly, three vertical slide rails are uniformly distributed on the side wall of the fixed cylinder 2 pointing to the front end of the slide block 5-6, and the slide rails are matched with the slide grooves on the slide block 5-6 in a sliding manner. When the tilting motor 5-1 works, the tilting motor 5-1 drives the threaded screw rod 5-2 to rotate in the threaded hole of the support ring 5-3, and the support ring 5-3 is driven by the threaded screw rod 5-2 to move vertically along the chute, so that the material distribution chute 3 is driven to incline in the discharging direction. The three tilting motors 5-1 are all in control connection with the PLC, and the three tilting motors 5-1 are independently driven through signals of the PLC.
An upper bearing seat 5-5 is further arranged at the joint of the threaded lead screw 5-2 and the top plate of the fixed cylinder 2, and the threaded lead screw 5-2 smoothly rotates in the upper bearing seat 5-5 and the lower bearing seat 5-4.
Preferably, the tail part of the sliding block 5-6 is fixed on the backing ring 5-3 on the inner side of the threaded hole, the tilting force of the threaded lead screw 5-2 can be quickly transmitted to the sliding rail, and the tilting angle is more accurate and controllable.
Preferably, the threaded screw 5-2 is a trapezoidal threaded screw 5-2, the tilting motor 5-1 is a variable frequency motor with a brake, and a worm gear reducer is further arranged between the variable frequency motor and the threaded screw 5-2. Because the trapezoidal thread and the worm gear speed reducer both have self-locking functions and are provided with the variable frequency motor with the brake, the purpose of accurately positioning the material distribution angle is achieved.
An annular groove 5-8 used for connecting a link mechanism is formed in the inner side wall, close to the rotary cylinder body 1, of the backing ring 5-3, and when the rotary motor 4-1 works, the rotary motor 4-1 drives the large gear ring 4-3 through the small gear 4-2 so as to drive the rotary cylinder body 1 to rotate; when the rotary cylinder body 1 rotates, the upper end of the connecting rod mechanism slides in the annular grooves 5-8, and then the distribution chute 3 is driven to rotate.
The connecting rod mechanism comprises a connecting arm 6-1 used for connecting the distribution chute 3, an ear plate 6-2 used for connecting the backing ring 5-3, a first connecting rod 6-3 and a second connecting rod 6-4 which are horizontally arranged between the connecting arm 6-1 and the ear plate 6-2. The connecting arm 6-1 and the lug plate 6-2 are both vertically arranged, the upper end of the lug plate 6-2 is connected with the annular groove 5-8 of the supporting ring 5-3 in a sliding fit mode through a convex sliding protrusion, the cloth chute 3 is fixedly connected below the connecting arm 6-1, and transmission is achieved between the lug plate 6-2 and the connecting arm 6-1 through the first connecting rod 6-3 and the second connecting rod 6-4.
The first connecting rod 6-3 is arranged right above the second connecting rod 6-4, and the first connecting rod 6-3 and the second connecting rod 6-4 penetrate through the fixed cylinder 2 and the rotary cylinder 1. The through holes for the first connecting rod 6-3 and the second connecting rod 6-4 to penetrate through on the fixed cylinder 2 are all round holes, the through hole for the first connecting rod 6-3 to penetrate through on the rotary cylinder 1 is an arc-shaped long hole 6-5, the through hole for the second connecting rod 6-4 to penetrate through is a round hole, and the first connecting rod 6-3 can slide in the arc-shaped long hole 6-5. When the backing ring 5-3 tilts under the action of the tilting motor 5-1, the backing ring 5-3 drives the lug plate 6-2 to move, and the connecting arm 6-1 drives the material distribution chute 3 to tilt by taking the second connecting rod 6-4 as a rotating shaft and the first connecting rod 6-3 as a rocker, so that the adjustment of the material distribution angle is realized.
The lower parts of the two connecting arms 6-1 are fixedly connected with the distribution chute 3, and the bottom parts of the two connecting arms 6-1 are also provided with supporting strips 6-6 so as to increase the connecting strength of the distribution chute 3 and the stability of the feeding process.
The outer wall of the fixed cylinder body 2 is also provided with access holes 7, as shown in fig. 1, the three access holes 7 are arranged in the embodiment and are uniformly distributed along the circumferential direction of the fixed cylinder body 2.
And a lubricating mechanism is also arranged in the precise tilting blast furnace airtight box and is used for automatically lubricating transmission parts such as a threaded lead screw 5-2, an upper bearing seat 5-5, a lower bearing seat 5-4, a slide rail and the like at regular intervals, so that the stability and reliability of the transmission process are ensured.
The working process of the utility model is as follows:
rotation of the distribution chute:
the PLC drives the rotating motor to act, and an output shaft of the rotating motor drives the pinion to further drive the large gear ring and the rotating cylinder to rotate; when the rotary cylinder body rotates, the lug plate sliding protrusions slide in the annular grooves of the support rings, and the first connecting rod and the second connecting rod drive the connecting arms and the distribution chute to realize circumferential rotation of the distribution chute.
Tilting of the distribution chute:
when the blast furnace needs to be discharged and the chute angle needs to be adjusted, the PLC drives the three tilting motors to synchronously act, the three tilting motors drive the corresponding threaded screws to rotate in the threaded holes, the backing ring is driven by the threaded screws to vertically move along the chutes, the lifting or the downward movement of the backing ring is realized, and then the angle of the distribution chute is driven by the connecting rod mechanism to change.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (7)
1. The utility model provides an accurate tilting type blast furnace gas-tight box, includes rotatory barrel (1), fixed barrel (2) and cloth chute (3), fixed barrel (2) cover is put in the outside of rotatory barrel (1), cloth chute (3) are fixed in rotatory barrel (1) bottom through link mechanism, its characterized in that: the device also comprises a rotating mechanism and a tilting mechanism; the rotating mechanism comprises a large gear ring (4-3) fixedly arranged on the outer wall of the rotating cylinder body (1), a small gear (4-2) meshed with the large gear ring (4-3), and a rotating motor (4-1) for driving the small gear (4-2) to rotate;
the tilting mechanism comprises a tilting motor (5-1), a threaded lead screw (5-2) and a backing ring (5-3); the supporting ring (5-3) is arranged in the inner cavity of the fixed cylinder body (2), and the supporting ring (5-3) is coaxially arranged with the rotary cylinder body (1) and the fixed cylinder body (2); three threaded holes in the vertical direction are uniformly formed in the backing ring (5-3), and a threaded lead screw (5-2) is arranged in each threaded hole; the top end of each threaded lead screw (5-2) penetrates through a top plate of the fixed cylinder (2) and then is in transmission connection with a tilting motor (5-1), and the bottom end of each threaded lead screw (5-2) is installed on a lower bearing seat (5-4) on a bottom plate of the fixed cylinder (2); the supporting ring (5-3) is also fixedly provided with three sliding blocks (5-6), and the inner side wall of each sliding block (5-6) close to the center of the supporting ring (5-3) is provided with a sliding groove; correspondingly, three vertical slide rails are uniformly distributed on the inner side plate of the fixed cylinder (2) pointed by the front ends of the slide blocks (5-6), and the slide rails are connected with the slide grooves in a sliding fit manner.
2. The blast furnace gas-tight box of the accurate tilting type according to claim 1, characterized in that: the tail part of the sliding block (5-6) is fixed on the backing ring (5-3) at the inner side of the threaded hole.
3. The blast furnace gas-tight box of the accurate tilting type according to claim 1, characterized in that: the thread screw (5-2) is a trapezoidal thread screw (5-2), the tilting motor (5-1) is a variable frequency motor with a brake, and a worm and gear reducer is further arranged between the variable frequency motor and the thread screw (5-2).
4. The blast furnace gas-tight box of the accurate tilting type according to claim 1, characterized in that: and an annular groove (5-8) for connecting the link mechanism is formed in the inner side wall of the supporting ring (5-3) close to the rotary cylinder body (1).
5. The blast furnace gas-tight box of the accurate tilting type according to claim 4, characterized in that: the connecting rod mechanism comprises a connecting arm (6-1) used for connecting the distribution chute (3), an ear plate (6-2) used for connecting the backing ring (5-3), and a first connecting rod (6-3) and a second connecting rod (6-4) which are horizontally arranged between the connecting arm (6-1) and the ear plate (6-2); the connecting arm (6-1) and the lug plate (6-2) are vertically arranged, the upper end of the lug plate (6-2) is connected with the annular groove (5-8) of the supporting ring (5-3) in a sliding fit mode through a convex sliding bulge, and the lower portion of the connecting arm (6-1) is fixedly connected with the distributing chute (3).
6. The blast furnace gas-tight box of the accurate tilting type according to claim 5, characterized in that: the first connecting rod (6-3) is arranged right above the second connecting rod (6-4), and the first connecting rod (6-3) and the second connecting rod (6-4) penetrate through the fixed cylinder (2) and the rotary cylinder (1).
7. The blast furnace gas-tight box of the accurate tilting type according to claim 6, characterized in that: the through holes for the first connecting rods (6-3) and the second connecting rods (6-4) to penetrate through on the fixed cylinder body (2) are round holes, and the through holes for the first connecting rods (6-3) to penetrate through on the rotary cylinder body (1) are arc-shaped long-strip holes (6-5) and the through holes for the second connecting rods (6-4) to penetrate through are round holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122744385.0U CN216663135U (en) | 2021-11-10 | 2021-11-10 | Accurate type blast furnace airtight box that inclines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122744385.0U CN216663135U (en) | 2021-11-10 | 2021-11-10 | Accurate type blast furnace airtight box that inclines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216663135U true CN216663135U (en) | 2022-06-03 |
Family
ID=81783676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122744385.0U Active CN216663135U (en) | 2021-11-10 | 2021-11-10 | Accurate type blast furnace airtight box that inclines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216663135U (en) |
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2021
- 2021-11-10 CN CN202122744385.0U patent/CN216663135U/en active Active
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