CN206843515U - A kind of auto-closed ball valve and a kind of blast furnace coal-spraying gun - Google Patents
A kind of auto-closed ball valve and a kind of blast furnace coal-spraying gun Download PDFInfo
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- CN206843515U CN206843515U CN201720770053.0U CN201720770053U CN206843515U CN 206843515 U CN206843515 U CN 206843515U CN 201720770053 U CN201720770053 U CN 201720770053U CN 206843515 U CN206843515 U CN 206843515U
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- blast furnace
- bonnet
- ball valve
- ball
- spinner
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Abstract
The utility model discloses a kind of auto-closed ball valve and a kind of blast furnace coal-spraying gun, belong to steel equipment field.The main body of ball valve of the present utility model is the cast member with cavity, and metal ball can move freely therein, and when spray gun exits, metal ball, which is fallen, blocks passage, prevents blast furnace hot inside air from leaking；When spray gun enters ball valve, metal ball enters cavity, jet pipe is entered blast furnace through ball valve and performs coal powder injection operation；Utilize a kind of blast furnace coal-spraying gun of the pellet valve arrangement, also use with inclined plane fan-shaped latch be used as attachment structure, make spray gun use and change more facilitate, the utility model is reliable, operation is easy with changing, and has the advantages of simple in construction, reasonable in design, easily fabricated.
Description
Technical field
The utility model belongs to steel equipment field, more specifically to a kind of auto-closed ball valve and its in height
Application in stove coal powder injection spray gun.
Background technology
Pulverized coal injection in blast furnace is the coal dust for being directly blown levigate into stove from blast-furnace tuyere, is risen with substitute for coke and provides heat
The effect of amount and reducing agent, so as to reduce coke ratio, pig iron cost is reduced, it is an important technology during modern blast furnace is smelted.
Coal powder injection spray gun is the key component of Coalblowing system, and coal dust is sprayed by coal chute road and flow regulating and controlling valve through coal powder lance
Into blast furnace burner hearth.The coal dust sprayed into from spray gun in belly pipe is the transients sprayed into suddenly in hot blast by cold coal dust,
Now the rate of heat addition of coal dust is up to 103~106k/s, and the ignition temperature of coal dust is up to 2000 DEG C, the heating of near-by explosion flame
Speed and temperature, this causes the process such as preheating, dry, deaerating, volatilizing almost while intersecting progress for coal dust.As can be seen here, coal
Powder spray gun is worked in a high temperature, erosive wear and the adverse circumstances of corrosion, along with coal powder size, coal dust this body structure
The factor such as property and impurities, Geldart-D particle change influence, pulverized coal gun often with abrasion, high-temperature oxydation, high temperature corrosion and
Several damage types such as high temperature deformation occur.Existing frequently-used coal powder lance for blast furnace, typically using common seamless pipe or common stainless
Steel pipe, entirety or split welding, barral of a gun are particularly the pipette tips part to be worked in blast furnace burner hearth and wearability, heat resistance, heat be present
Stability deficiency, service life are short, change the defects of frequent, directly affect the yield, cost and pig iron quality of blast fumance.
The patented product being applied more at present, partly solves above-mentioned deficiency.If publication date is in September, 2015
The Chinese patent 201520110168.8 of 16 days discloses a kind of wear-resisting coal spouting gun of pressurization of blast furnace, and it includes the body of a gun, pipette tips, pipette tips
It is made up of the cermet of steel pipe and its liner, the bending of pipette tips front end；Body of a gun periphery sets fixing device, and fixing device includes spray
Spray gun clamp nut, the clamping block of rifle clamp threaded connection, oil immersion asbestos, card are set between spray gun clamp and spray gun clamp nut
The open metal hold-fast ring that cross section is triangle is installed between the tight block end face relative with spray gun nut, metal hold-fast ring
The coal powder injection long tube of inner ring surface and coal powder lance fits, and clamping block and spray gun nut are less than towards the internal diameter of one end of metal hold-fast ring
The maximum gauge of metal hold-fast ring, but the design does not provide the structure of ball valve.
And for example, publication date discloses a kind of ironmaking height for the Chinese patent CN200820077072.6 on January 14th, 2009
Stove coal powder injection spray gun, it includes barral of a gun, pipette tips, it is characterized in that one end connection ball valve of barral of a gun, the other end are connected by connector
Pipette tips, barral of a gun, pipette tips are circular cylinder, and the end of pipette tips is tilted, and internal thread is set on connector, the pipette tips being connected with connector
One end sets the external screw thread matched with the internal thread on connector, and barral of a gun welds with connector, ball valve.It is high with existing ironmaking
Stove coal powder injection spray gun is compared, and the utility model price is relatively low, and operating cost is relatively low, but still is coal dust the problem of exist in ball valve
Easily it is detained and blocks, and pulverized coal flow size is non-adjustable.
The content of the invention
1st, to solve the problems, such as
For existing coal powder lance service life is short, big, complex operation is worn in air port, replacing is frequent, staff labor intensity is big
The problem of, the utility model offer a kind of auto-closed ball valve and a kind of price is low, operating cost is low, replacement operation is easy,
Safe and reliable blast furnace coal-spraying gun.
2nd, technical scheme
To solve the above problems, the utility model adopts the following technical scheme that.
A kind of auto-closed ball valve, including valve body and metal ball, the both ends of described valve body are respectively equipped with access road
And exit passageway, the middle part of described valve body are provided with outstanding valve cavity, for accommodating described metal ball；Described
The end face that exit passageway is located in valve body is inclined-plane, and the diameter of the metal ball is more than the diameter of exit passageway, led to less than entrance
The diameter in road, the arrival end diameter of the access road are less than metal bulb diameter.
Further, the both ends of valve body are respectively equipped with valve flange disk.
Further, in addition to pellet bonnet, the matrix of described pellet bonnet is bonnet flange disk, bonnet flange disk
Side be provided with annular projection, the center of bonnet flange disk and annular projection is equipped with through hole, and the annular projection is insinuated into institute
State in access road, the through hole of bonnet flange disk center is the arrival end of access road.
Further, ball face sealing structure is used between the through hole at annular projection center and metal ball.
A kind of blast furnace coal-spraying gun, including jet pipe, include the ball valve of said structure, and one end of described jet pipe is from entering
Mouth passage is extend into blast furnace through exit passageway, and metal ball is pushed in valve cavity.
Further, in addition to spinner, it is tightly connected between spinner and pellet bonnet, one end of the jet pipe is worn successively
Spinner and pellet bonnet are crossed, is extend into by access road and exit passageway in blast furnace, sealing shroud is provided between spinner and jet pipe.
Further, fixed between the spinner and jet pipe by bolt.
Further, side relative with annular projection on the bonnet flange disk is provided with ring cavity, the spinner
One end be provided with the fan-shaped latch being distributed according to even circumferential, the spinner passes through fan-shaped latch and ring cavity and aligns trip.
Further, sealed between the through hole of the end of the spinner and bonnet flange disk center using spherical structure.
Further, the other end of described jet pipe is connected with ball valve, and ball valve is connected by mariages head with quick-release connector.
In practical operation, before spray gun use, ball valve is fixed on high furnace outer wall, and now metal ball is hot in blast furnace
It is close under the pressure of air and the gravity of its own at the horn mouth of pellet bonnet, because side wall is arc-shaped, metal ball
Sphere is brought into close contact with bell-mouthed side, hot-air in stove is not revealed.
In spray gun in use, the access road of jet pipe insertion ball valve, under the promotion of jet pipe, metal ball is along in valve body
Inclined plane toward cavity ionized motion, jet pipe is entered through ball valve in blast furnace, can then carry out coal powder injection operation.
3rd, beneficial effect
Compared to prior art, the beneficial effects of the utility model are：
(1) main body of ball valve of the present utility model is the cast member with cavity, and metal ball can move freely therein,
When spray gun exits, metal ball, which is fallen, blocks passage, prevents blast furnace hot inside air from leaking；When spray gun enters ball valve, gold
Category ball enter cavity, make jet pipe through ball valve enter blast furnace perform coal powder injection operate, this design and operation is reliable, facilitate it is easy-to-use,
When air pressure is smaller in blast furnace, remain able to ensure the air-tightness of blast furnace, and coal dust will not be caused to be accumulated in ball valve, nothing
Need worker to safeguard, alleviate the labor intensity of employee, improve labor productivity；
(2) the utility model employs instant open type ball valve, greatly simplify mode of operation, makes peace easy to operate
It is complete reliable；
(3) pellet bonnet of the present utility model is the design of ball face sealing using two sides, metal ball and ball face sealing
Side gluing, sealing, self sealss effect is good, and when stopping coal injection, steel ball is compressed with passage and is bonded, hot in blast furnace so as to ensure
Air is not revealed, it is ensured that the sealing and furnace pressure of blast furnace；Between spinner and pellet bonnet and ball face sealing designs, and enters
One step adds the sealing of spray gun；
(4) pellet bonnet and spinner of the present utility model are by the use of fan-shaped latch as fastener, not only safely and effectively, and
And the installation and removal of jet pipe are all very convenient；
(5) the utility model employs ball valve, makes the regulation of flow more safe and reliable, avoids delay and blocks, makes
Coal dust flowing is more smooth；Mariages head and quick-release connector are employed, makes the replacing of spray gun consumable accessory more convenient；
(6) the utility model is simple in construction, reasonable in design, easily fabricated.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model blast furnace coal-spraying gun；
Fig. 2 is the connected mode schematic diagram of ball valve of the present utility model and pellet bonnet；
In figure：1- quick-release connectors；2- mariages heads；3- ball valves；4- jet pipes；5- sealing shrouds；6- bolts；7- spinners；8-
Ball valve；9- pellet bonnets；801- valve bodies；802- valve flange disks；803- access roades；804- exit passageways；805- valve bodies
Cavity；901- annular projections；902- bonnet flange disks；903- ring cavities；904- ball face sealings；905- ball face sealings；906-
Fixture block；
Fig. 3 is ball valve schematic diagram of the present utility model；
In figure：A- front views；B- side views；
Fig. 4 is pellet bonnet schematic diagram of the present utility model；
In figure：C- front views；D- side views.
Embodiment
The utility model is further described below with reference to specific embodiment.
Embodiment
A kind of auto-closed ball valve as shown in Figure 2,3, 4, including valve body 801, valve flange disk 802, access road
803rd, exit passageway 804, pellet bonnet 9 and metal ball.Such as Fig. 3, the both ends of valve body 801 are respectively equipped with valve flange disk 802,
The both ends of valve body 801 further respectively have access road 803 and exit passageway 804, and the middle part of valve body 801 is provided with outstanding valve
Body cavity 805, for accommodating described metal ball；The end face that exit passageway 804 is located in valve body 801 is inclined-plane, metal ball
Diameter is more than the diameter of exit passageway 804, and is less than less than the diameter of access road 803, the arrival end diameter of access road 803
Metal bulb diameter, in use, metal ball is located in access road 803 for blocking its arrival end on blast furnace.
Such as Fig. 4, the matrix of pellet bonnet 9 is bonnet flange disk 902, and the side of bonnet flange disk 902 is provided with annular projection
901, the center of bonnet flange disk 902 and annular projection 901 is equipped with through hole, as shown in Fig. 2 the diameter of annular projection 901 with
The diameter of access road 803 is suitable, and annular projection 901 is just snapped onto in the access road 803 when in use, bonnet flange
The through hole at the center of disk 902 is the arrival end of access road 803, and the diameter of metal ball is more than the diameter of the arrival end, and ring-type is convex
Rise and use ball face sealing structure between the through hole at 901 centers and metal ball, enable the sphere and ball face sealing 904 of metal ball
Two side while gluing, sealing.
A kind of blast furnace coal-spraying gun as shown in Figure 1, including jet pipe 4, spinner 7, pellet bonnet 9 and ball valve 8, ball valve
8 use aforementioned structure, and one end of jet pipe 4 sequentially passes through spinner 7, the central through hole of pellet bonnet 9, led to from the entrance of ball valve 8
Road 803 is extend into blast furnace through exit passageway 804, and now metal ball is pushed into valve cavity 805, and jet pipe 4 is circular cylinder
Shape structure, one end of spinner 7 are slightly larger than the circular cylinder of the external diameter of jet pipe 4 for internal diameter, and the end is provided with bolt 6, the edge of bolt 6
Spinner 7 is radially arranged, and fixes the relative position of spinner 7 and jet pipe 4, and the junction of spinner 7 and jet pipe 4 is provided with sealing shroud
5, the other end of spinner 7 is connected with the pellet bonnet 9 in ball valve 8, and the end is provided with the fan-shaped latch being distributed according to even circumferential,
Spinner 7 aligns trip, end and the bonnet flange disk 902 of spinner 7 by the ring cavity 903 of fan-shaped latch and pellet bonnet 9
Using spherical structure sealing (in figure 905 shown in) between the through hole at center, make the tight silk in junction of spinner 7 and pellet bonnet 9
Joint close, the leakage of coal dust will not occur.
The other end of jet pipe 4 is also connected with ball valve 3, mariages first 2 and quick-release connector 1 in turn, and it is defeated that quick-release connector 1 connects coal dust
Send equipment, ball valve 3 is adjusting pulverized coal flow size.
In the present embodiment, the contact surface of the fan-shaped latch of spinner 7 and ring cavity 903 is inclined plane, and spinner 7 can be made to exist
A direction is gradually tightened on (forward or reversely), ensure that the fixing that spinner 7 and pellet bonnet 9 connect.Concretely, ring
For shape cavity 903 by being formed between fixture block 906 and bonnet flange disk 902, the one side of fixture block 906 against bonnet flange disk 902 is to incline
Inclined-plane, hence in so that the section of the cavity between fixture block 906 and bonnet flange disk 902 is right-angled trapezium shape, in the present embodiment
Fixture block 906 have three, be symmetrical arranged, form neck between each two fixture block 906, the fan-deck card odontoid on spinner 7 and card
The shape of groove and fixture block is approximate, and when mounted, fan-shaped latch is correspondingly placed into neck, then according to clockwise or counterclockwise
Direction rotate, fan-shaped latch is entered clamping in the cavity between fixture block 906 and bonnet flange disk 902.The end face of spinner 7
Ball face sealing is carried out with the end face of the central through hole on bonnet flange disk 902.
Spinner 7 and the sealing shroud 5 of the junction of jet pipe 4 are resistant to elevated temperatures elastomeric material, in the present embodiment, sealing shroud 5
For resistant to elevated temperatures elastomeric material, the compactness connected between spinner 7 and jet pipe 4 ensure that.
In the present embodiment, ball valve 8 is fixed on high furnace outer wall, the internal diameter of the exit passageway 804 of the ball valve 8 with
The external diameter of jet pipe 4 is identical, prevents hot-air of the spray gun in injection in blast furnace from being let out by the gap between ball valve and jet pipe
Leakage.
In practical operation, before spray gun use, ball valve is fixed on high furnace outer wall, the valve cavity 805 of ball valve
Place upward, now metal ball is led in blast furnace under the pressure of hot-air and the gravity of its own into the entrance in ball valve
Road, the central through hole (i.e. arrival end) of pellet bonnet is blocked, because the side wall of arrival end is arc-shaped, the sphere of metal ball is with entering
The side at mouth end is brought into close contact, so as to ensure that hot-air is not revealed in blast furnace, it is ensured that the sealing and furnace pressure of blast furnace.
In spray gun in use, one end of jet pipe 4 sequentially passes through spinner 7, the central through hole of pellet bonnet 9, from ball valve 8
Access road 803 is extend into blast furnace through exit passageway 804, and under the promotion of jet pipe, metal ball is along the inclined plane in valve body
Toward cavity ionized motion, enter in valve cavity, jet pipe is entered through ball valve in blast furnace, can then carry out
Coal powder injection operates.
Claims (10)
- A kind of 1. auto-closed ball valve, it is characterised in that including valve body (801) and metal ball, the two of described valve body (801) End is respectively equipped with access road (803) and exit passageway (804), and the middle part of described valve body (801) is provided with outstanding valve Body cavity (805), for accommodating described metal ball；The end face that described exit passageway (804) is located in valve body (801) is oblique Face, the diameter of the metal ball are more than the diameter of exit passageway (804), and less than the diameter of access road (803), the entrance The arrival end diameter of passage (803) is less than metal bulb diameter.
- 2. auto-closed ball valve according to claim 1, it is characterised in that the both ends of valve body (801) are respectively equipped with Valve flange disk (802).
- 3. auto-closed ball valve according to claim 2, it is characterised in that also including pellet bonnet (9), described bullet The matrix of sub- bonnet (9) is bonnet flange disk (902), and the side of bonnet flange disk (902) is provided with annular projection (901), bonnet The center of ring flange (902) and annular projection (901) is equipped with through hole, and the annular projection (901) is insinuated into the entrance and led to In road (803), the through hole at bonnet flange disk (902) center is the arrival end of access road (803).
- 4. auto-closed ball valve according to claim 3, it is characterised in that the through hole at annular projection (901) center with Ball face sealing structure is used between metal ball.
- 5. a kind of blast furnace coal-spraying gun, including jet pipe (4), it is characterised in that also including any one institute in Claims 1 to 4 The ball valve stated, one end of described jet pipe (4) is extend into blast furnace from access road (803) through exit passageway (804), by gold Category ball is pushed in valve cavity (805).
- 6. blast furnace coal-spraying gun according to claim 5, it is characterised in that also including spinner (7), spinner (7) and pellet Bonnet is tightly connected between (9), and one end of the jet pipe (4) sequentially passes through spinner (7) and pellet bonnet (9), is led to by entrance Road (803) and exit passageway (804) are extend into blast furnace, and sealing shroud (5) is provided between spinner (7) and jet pipe (4).
- 7. blast furnace coal-spraying gun according to claim 6, it is characterised in that pass through between the spinner (7) and jet pipe (4) Bolt (6) is fixed.
- 8. the blast furnace coal-spraying gun according to claim 6 or 7, it is characterised in that on the bonnet flange disk (902) and ring The relative side of shape projection (901) is provided with ring cavity (903), and one end of the spinner (7) is provided with to be distributed according to even circumferential Fan-shaped latch, the spinner (7) passes through fan-shaped latch and ring cavity (903) and aligns trip.
- 9. blast furnace coal-spraying gun according to claim 8, it is characterised in that the end of the spinner (7) and bonnet flange Sealed between the through hole at disk (902) center using spherical structure.
- 10. blast furnace coal-spraying gun according to claim 8, it is characterised in that the other end and ball valve of described jet pipe (4) (3) connect, ball valve (3) is connected by mariages head (2) with quick-release connector (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720770053.0U CN206843515U (en) | 2017-06-29 | 2017-06-29 | A kind of auto-closed ball valve and a kind of blast furnace coal-spraying gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720770053.0U CN206843515U (en) | 2017-06-29 | 2017-06-29 | A kind of auto-closed ball valve and a kind of blast furnace coal-spraying gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206843515U true CN206843515U (en) | 2018-01-05 |
Family
ID=60803023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720770053.0U Expired - Fee Related CN206843515U (en) | 2017-06-29 | 2017-06-29 | A kind of auto-closed ball valve and a kind of blast furnace coal-spraying gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206843515U (en) |
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2017
- 2017-06-29 CN CN201720770053.0U patent/CN206843515U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180105 Termination date: 20180629 |