CN211199253U

CN211199253U - High-pressure water spraying device for blast furnace slag granulation

Info

Publication number: CN211199253U
Application number: CN201921845512.2U
Authority: CN
Inventors: 张志江; 刘利芳; 高志永; 赵永峰; 王磊
Original assignee: Xuanhua Iron and Steel Group Co Ltd
Current assignee: Xuanhua Iron and Steel Group Co Ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-08-07
Anticipated expiration: 2029-10-30

Abstract

A high-pressure water spraying device for blast furnace slag granulation belongs to the technical field of blast furnace slag treatment equipment and is used for blast furnace slag granulation. The technical scheme is as follows: the flange has been welded respectively at the both ends of collector pipe, the flange and the flange blind flange of collector pipe one end are connected and seal, the flange of the other end of collector pipe is connected with the inlet tube flange, inlet tube flange and inlet tube welded connection, there is the rectangle delivery port along collector pipe length direction on the collector pipe, one side of shower nozzle is connected with the delivery port of collector pipe, the opposite side equipartition of shower nozzle has a plurality of hole for water sprayings, collector pipe fixed connection is in high temperature slag swift current mouth below, the hole for water spraying of shower nozzle is relative with the high temperature slag of outflow. The utility model discloses it is small, simple structure, the installation and the dismantlement of being convenient for, it is all very convenient to clear away filth and maintenance, can adjust the pressure and the flow of water spray in the certain limit, adjusts nimble, stable, reliable, can satisfy actual production's multiple demand.

Description

High-pressure water spraying device for blast furnace slag granulation

Technical Field

The utility model relates to a high-pressure water spraying device for granulating blast furnace slag, belonging to the technical field of blast furnace slag treatment equipment.

Background

Blast furnace smelting is one of the most important methods for iron-making production. The main product of blast furnace smelting is pig iron, the byproduct is mainly blast furnace slag, and the blast furnace slag is produced along with iron making and generally has a weight ratio of 0.4: a slag iron ratio of 1. The finished granulated slag obtained by putting the high-temperature liquid blast furnace slag into water for rapid water quenching and cooling treatment is the first-class raw material for processing cement, so that the water quenching granulation of the blast furnace slag by using a hydraulic slag flushing system, namely hydraulic slag flushing, is the most main method for treating the blast furnace slag in China at present.

When the blast furnace slag is granulated by water quenching, at the moment that liquid high-temperature slag flows into the slag runner along the high-temperature slag runner, high-pressure granulating water sprayed by a high-pressure water spraying device arranged at the lower part of a spout of the high-temperature slag runner is quickly scattered and cooled by water quenching to form a slag-water mixture, and the slag-water mixture is conveyed to the next procedure by the kinetic energy of the granulating water to carry out slag-water separation. The slag runner is a groove-shaped device with a steel or concrete structure, is internally embedded with a liner plate, and is a device for completing water quenching and granulating of blast furnace slag and conveying slag-water mixture. The granulating water sprayed out of the high-pressure water spraying box body is supplied by a circulating water supply pump.

The high-pressure water spraying device is important equipment for a blast furnace slag water quenching and granulating process, and a pore plate of the high-pressure water spraying device sprays columnar, layered and granulated water with certain pressure and flow, so that liquid blast furnace slag falling from a high-temperature slag runner nozzle can be scattered, water quenched and cooled. The high-pressure water spraying device used in the existing equipment has the following disadvantages: the design is simple, the function is single, and the box size is great simultaneously, does not have the drain, blocks up very easily, adopts the welding installation, and installation, maintenance and maintenance are comparatively difficult, especially can not adjust discharge and pressure according to the production actual conditions is nimble. Therefore, it is necessary to improve the existing high-pressure water spraying device to meet the requirement of actual production.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a high pressure water jet equipment of blast furnace slag granulation is provided, this kind of high pressure water jet equipment can adjust the pressure and the flow of water spray in the certain limit, adjusts nimble, stable, reliable, and easy dismounting simultaneously maintains, overhauls easily, uses reliably, and strong adaptability can satisfy actual production's multiple demand.

The technical scheme for solving the technical problems is as follows:

the utility model provides a high-pressure water jet equipment that blast furnace slag is graining, it includes collector pipe and shower nozzle, the steel cylinder that the collector pipe was placed for the level, the flange has been welded respectively at the both ends of collector pipe, the flange and the flange blind flange of collector pipe one end are connected and seal, the flange of the other end of collector pipe is connected with the inlet tube flange, inlet tube flange and inlet tube welded connection, there is the rectangle delivery port along collector pipe length direction on the collector pipe, the shower nozzle is the rectangle box body, one side of the rectangle box body of shower nozzle is connected with the delivery port of collector pipe, the opposite side equipartition of the rectangle box body of shower nozzle has a plurality of hole for water spraying, collector pipe fixed connection is in high temperature slag swift current mouth below, the hole for water.

Above-mentioned high pressure water jet equipment of blast furnace slag granulation, the shower nozzle comprises curb plate, end plate and roof, and curb plate, end plate and roof are the rectangle steel sheet respectively, and two curb plate parallels are relative, and two end plates are connected perpendicularly respectively at the both ends of two curb plates, and the roof is connected at the top surface of the rectangle frame that two curb plates and two end plates are constituteed, and the lower extreme of two end plates is convex, and convex radian and the cylinder circumference radian phase-match of collector pipe, the lower extreme of two curb plates and two end plates respectively with the both sides and the both ends welded connection of the rectangle delivery port of collector pipe, the equipartition has a plurality of hole for.

According to the high-pressure water spraying device for granulating the blast furnace slag, the plurality of water spraying holes in the top plate are respectively arranged in several rows, the diameters of the plurality of water spraying holes are various, the top plate is also provided with the screw plugging holes, the plurality of screw plugging holes are arranged among the water spraying holes at intervals, the inner hole wall of each screw plugging hole is provided with the threads, the threads of the water spraying screw plugs are matched with the inner hole threads of the screw plugging holes, and the water spraying screw plugs are screwed on the screw plugging holes.

The high-pressure water spraying device for blast furnace slag granulation comprises a mounting plate, wherein the mounting plate is two arc-shaped steel plates, the surfaces of the two mounting plates are parallel and opposite, the upper ends of the two mounting plates are respectively welded on a steel structure below a high-temperature slag spout, the distance between the two mounting plates is matched with the length of a water collecting pipe, arc-shaped long holes are respectively arranged on the two mounting plates, the width of each arc-shaped long hole is matched with the diameter of a flange connecting bolt at the two ends of the water collecting pipe, and the flange connecting bolts at the two ends of the water collecting pipe respectively penetrate through the arc-shaped long holes of the two mounting plates to.

The utility model has the advantages that:

the utility model discloses a collector pipe is connected with the inlet tube, and collector pipe side-mounting shower nozzle, the hole for water spraying of shower nozzle are relative with the high temperature slag that flows. Flanges are respectively arranged at two ends of the water collecting pipe, so that the water collecting pipe is convenient to open and clean dirt and maintain; the top plate is provided with a plurality of screw blocking holes which can be closed by the water spraying screw block, and the water spraying flow and the water spraying pressure of the spray head are adjusted by increasing or reducing the number of the screw blocking holes closed by the water spraying screw block; the water collecting pipe is connected with the mounting plate through a bolt, and is convenient to detach and mount.

The utility model discloses it is small, simple structure, the installation and the dismantlement of being convenient for, it is all very convenient to clear away filth and maintenance, can adjust the pressure and the flow of water spray in the certain limit, adjusts nimble, stable, reliable, can satisfy the multiple demand of actual production, is current high pressure water jet equipment's substitute product, has good using value widely.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a schematic of the face of the top plate;

FIG. 4 is a cross-sectional view B-B of FIG. 3;

FIG. 5 is a schematic view of the structure of the mounting plate;

fig. 6 is an installation schematic diagram of the present invention.

The figures are labeled as follows: the device comprises a water collecting pipe 1, a spray head 2, a flange 3, a flange blind plate 4, a flange connecting bolt 5, a water inlet pipe flange 6, a water inlet pipe 7, a side plate 8, an end plate 9, a top plate 10, a water spraying hole 11, a thread blocking hole 12, a water spraying thread blocking 13, a mounting plate 14, an arc-shaped long hole 15, a high-temperature slag runner 16, a high-temperature slag spout 17, high-temperature slag 18, a slag-water mixture 19, a water slag runner 20 and granulating water 21.

Detailed Description

The utility model discloses constitute by collector pipe 1 and shower nozzle 2.

The figure shows that the water collecting pipe 1 is a horizontally placed steel cylinder, and flanges 3 are welded to two ends of the water collecting pipe 1 respectively. A flange 3 welded at one end of the water collecting pipe 1 is connected with a flange blind plate 4 through a flange connecting bolt 5, and the flange blind plate 4 seals the end of the water collecting pipe 1. The flange 3 welded at the other end of the water collecting pipe 1 is connected with the flange 6 of the water inlet pipe through a flange connecting bolt 5, and the flange 6 of the water inlet pipe is connected with the water inlet pipe 7 in a welding way. The both ends of collector pipe 1 adopt flange 3 structure to be connected with flange blind flange 4, inlet tube flange 6 respectively, and not only the connection is convenient, still convenient to detach clears away filth and maintenance.

The figure shows that the water collecting pipe 1 is provided with a rectangular water outlet along the length direction of the water collecting pipe 1, the spray head 2 is a rectangular box body, and one side of the rectangular box body of the spray head 2 is connected with the water outlet of the water collecting pipe 1. Shower nozzle 2 is by curb plate 8, end plate 9 and roof 10 are constituteed, curb plate 8, end plate 9 and roof 10 are the rectangle steel sheet respectively, two curb plate 8 parallels are relative, two end plate 9 are connected perpendicularly respectively at two 8 both ends of curb plate, roof 10 connects the top surface at the rectangle frame that two curb plates 8 and two end plate 9 are constituteed, the lower extreme of two end plate 9 is arc, arc's radian and collector pipe 1's cylinder circumference radian phase-match, the lower extreme of two curb plates 8 and two end plate 9 respectively with the both sides and the both ends welded connection of collector pipe 1's rectangle delivery port, the equipartition has a plurality of hole for water sprayings 11 on the roof 10.

It is shown that the diameters of the water discharge holes 11 formed in the top plate 10 are various, the water discharge holes 11 having different diameters are divided into three rows, the diameter of the water discharge hole 11 of the lowermost row is 25mm, and the diameter of the water discharge holes 11 of the middle and uppermost rows is 20mm, and the water discharge holes 11 are used to discharge water to the outside.

The figure shows that the top plate 10 is also provided with screw plugging holes 12, a plurality of screw plugging holes 12 are arranged among the water spray holes 11 at intervals, the inner hole wall of each screw plugging hole 12 is provided with threads, the threads of the water spray screw plug 13 are matched with the inner hole threads of the screw plugging holes 12, and the water spray screw plug 13 is screwed on the screw plugging holes 12. The water spraying pipe plug 13 has the function of changing the water spraying sectional area of the top plate 10 by removing or installing the number of the water spraying pipe plugs 13, and effectively adjusting the water outlet flow and pressure of water sprayed by the top plate 10 so as to adapt to different production requirements.

The mounting plates 14 are two arc-shaped steel plates, the plate surfaces of the two mounting plates 14 are parallel and opposite, the distance between the two mounting plates 14 is matched with the length of the water collecting pipe 1, the two mounting plates 14 are respectively provided with arc-shaped long holes 15, the width of each arc-shaped long hole 15 is matched with the diameter of each flange connecting bolt 5 at two ends of the water collecting pipe 1, and the flange connecting bolts 5 at two ends of the water collecting pipe 1 respectively penetrate through the arc-shaped long holes 15 of the two mounting plates 14 to fixedly connect the water collecting pipe 1 with the mounting plates 14.

The upper ends of two mounting plates 14 are respectively welded on the steel structure below the high-temperature slag spout 17, the water collecting pipe 1 is fixedly connected below the high-temperature slag spout 17 by the mounting plates 14, and the water spraying holes 11 of the spray head 2 are opposite to the flowing high-temperature slag 18.

The utility model discloses a use as follows:

after entering the closed space of the water collecting pipe 1 through the water inlet pipe flange 6 connected with the water inlet pipe 7, the high-pressure granulating water 21 enters the spray head 2 from the rectangular water outlet at the front part of the water collecting pipe 1, and the high-pressure granulating water 21 is sprayed out from the water spraying holes 11 on the top plate 10 of the spray head 2 under pressure to carry out water quenching and granulating on the high-temperature slag 18. During the production process, the flow rate and the pressure of the granulated water 21 can be adjusted by changing the number of the water spraying pipe plugs 13 according to the requirements of pressure and flow rate. The water flow and the water pressure of the existing granulation are changed within a certain range, the pressure is between 0.2 and 0.3MPa, and the flow is between 1100 and 1600m³The pressure and flow rate of the slag flushing device are adjusted to completely meet the actual requirements of pressure and flow rate in normal slag flushing production.

If foreign matters are arranged in the spray head 2 to block the water spray holes 11 of the top plate 10, the flange connecting bolts 5 of the flange blind plate 4 at one end of the water collecting pipe 1 can be detached, the flange blind plate 4 is taken down, the flange blind plate 4 is installed in place after the foreign matters are removed, and the operation is very simple.

The utility model discloses be applied to production since, blast furnace slag pelletization is respond well, and finished product sediment has realized that the grain slag benefit promotes greatly by 85% improvement to 100% in the past. The production of the water granulated slag per day of the blast furnace is 1400 t/day, and the annual benefit is 10.52 ten thousand yuan due to the improvement of the production condition.

The utility model discloses an embodiment as follows:

the water collecting pipe 1 adopts a phi 325 × seamless steel pipe, the length is 1700mm, and a rectangular hole 1168 × mm is formed in the middle of the water collecting pipe;

the length of the upper side plate of the spray head 2 is 1160mm, the width is 231mm, the length of the lower side plate is 1160mm, and the width is 272 mm;

the length of the upper end of the end plate 9 of the spray head 2 is 231mm, the length of the lower end is 272mm, the height is 200 mm, and the circular arc is R152.5 mm

The top plate 10 of the nozzle 2 has a length of 1160mm and a width of 200 mm

The number of the water spraying holes 11 in the lowest row of the top plate 10 is 20, the diameter is 25mm, the number of the middle and the highest rows is 32, and the diameter is 20 mm;

the number of the thread blocking holes 12 is 6, and the diameter is 44 mm;

the flange 3, the flange blind plate 4 and the water inlet pipe flange 6 use DN300/1.0MPa standard flanges;

the flange connecting bolt 5 is a hexagon bolt with the specification of M20 × 80;

the length of the mounting plate 14 is 180mm, the width is 60mm, and the length of the arc-shaped long hole 15 is 120mm, and the width is 22 mm.

Claims

1. A high-pressure water spraying device for granulating blast furnace slag is characterized in that: it includes collector pipe (1) and shower nozzle (2), the steel cylinder that collector pipe (1) was placed for the level, flange (3) have been welded respectively at the both ends of collector pipe (1), flange (3) and flange blind plate (4) of collector pipe (1) one end are connected and seal, flange (3) of the other end of collector pipe (1) are connected with inlet pipe flange (6), inlet pipe flange (6) and inlet tube (7) welded connection, there is the rectangle delivery port along collector pipe (1) length direction on collector pipe (1), shower nozzle (2) are the rectangle box body, the one side of the rectangle box body of shower nozzle (2) is connected with the delivery port of collector pipe (1), the opposite side equipartition of the rectangle box body of shower nozzle (2) has a plurality of hole for water spraying (11), collector pipe (1) fixed connection is below high temperature slag swift current mouth (17), hole for water spraying (11) of shower nozzle (2) are relative with the high temperature slag (18) that flow.

2. The high pressure waterjet apparatus for blast furnace slag granulation as set forth in claim 1, wherein: shower nozzle (2) by curb plate (8), end plate (9) and roof (10) are constituteed, curb plate (8), end plate (9) and roof (10) are the rectangle steel sheet respectively, two curb plate (8) parallels are relative, two end plate (9) are connected perpendicularly respectively at the both ends of two curb plate (8), roof (10) are connected at the top surface of the rectangle frame that two curb plate (8) and two end plate (9) are constituteed, the lower extreme of two end plate (9) is arc, arc's radian and the cylinder circumference radian phase-match of collector pipe (1), the lower extreme of two curb plate (8) and two end plate (9) respectively with the both sides and the both ends welded connection of the rectangle delivery port of collector pipe (1), the equipartition has a plurality of hole for water sprayings (11) on roof (10).

3. The high-pressure water injection apparatus for blast furnace slag granulation according to claim 2, characterized in that: a plurality of hole for water jets (11) of roof (10) are arranged into several rows respectively, and the diameter of a plurality of hole for water jets (11) has the multiple, and plug hole (12) in addition on roof (10), a plurality of plug hole (12) interval arrangement are between hole for water jets (11), have the screw thread on the interior pore wall of plug hole (12), and the screw thread of water spray plug (13) and the interior hole screw thread phase-match of plug hole (12), and water spray plug (13) is twisted on plug hole (12).

4. The high pressure waterjet apparatus for blast furnace slag granulation as set forth in claim 1, wherein: it also has mounting panel (14), mounting panel (14) are two arc steel sheets, the face parallel of two mounting panels (14) is relative, the upper end of two mounting panels (14) is welded respectively on the below steel construction of high temperature slag swift current mouth (17), distance between two mounting panels (14) and the length phase-match of collector pipe (1), there are arc slot hole (15) on two mounting panels (14) respectively, the width of arc slot hole (15) and the diameter phase-match of flange joint bolt (5) at collector pipe (1) both ends, flange joint bolt (5) at collector pipe (1) both ends pass arc slot hole (15) of two mounting panels (14) respectively with collector pipe (1) and mounting panel (14) fixed connection.