Blasting and soot blowing combined valve

Abstract

The utility model relates to the technical field of metallurgical waste heat boilers, in particular to a blasting and soot blowing combined valve which comprises a lower barrel and an upper barrel arranged at the top of the lower barrel, and a sealing structure is arranged at the joint of the lower barrel and the upper barrel. The outer side of the lower cylinder body is communicated with an inlet pipeline, and the bottom of the lower cylinder body is communicated with an outlet pipeline; a heavy hammer sealing block is fixedly arranged in the lower cylinder body, a heavy hammer groove is formed in the top of the heavy hammer sealing block, and a through hole communicated with the heavy hammer groove is formed in the bottom of the heavy hammer sealing block; a lifting assembly is arranged at the top of the upper barrel, the output end of the lifting assembly extends into the upper barrel and is connected with a steel wire rope, and the lower end of the steel wire rope penetrates through the sealing structure, extends into the lower barrel and is connected with a heavy hammer; smoke dust in the waste heat boiler can be effectively prevented from entering the valve body, the service life of the valve is prolonged, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical waste heat boilers, in particular to a blasting sootblowing combined valve. Background Art

[0002] Bottom-blown furnaces are molten pool smelting metallurgical furnaces primarily used for slag formation of lead smelting raw materials and the production of crude lead. The high-temperature, high-sulfur flue gas generated during normal operation is discharged through the furnace's flue gas outlet into the waste heat boiler system for cooling before the subsequent dust removal and flue gas acid production processes. Cooling the waste heat boiler is a critical step in the lead smelting production line. After sufficient heat exchange and cooling through the waste heat boiler and circulating water, the flue gas reaches the rated temperature required for electrostatic precipitator operation and ensures normal production in the subsequent acid production process. Gas-fired blasting ash cleaning equipment is a crucial component for ensuring the normal operation of the waste heat boiler. The principle of gas-fired blasting ash cleaning in the waste heat boiler is to mix acetylene with air under special equipment or conditions. The mixed gas fills the flame duct and shock wave generator and is ignited. The resulting shock wave acts on the ash accumulation surface, effectively removing ash from the waste heat boiler's heating surface, restoring the boiler's good heat transfer performance, and improving the boiler's heat exchange efficiency.

[0003] The valves of existing gas blasting and dust cleaning equipment are prone to poor sealing of plugs. In addition, since the convection zone of the waste heat boiler is at a slightly positive pressure, the light smoke dust has high viscosity and high specific gravity, which causes the smoke dust in the waste heat boiler to easily enter the valve body, affecting the service life of the valve. The workload of repairing and disassembling the valve is large, and the labor intensity of the staff is high. Summary of the Invention

[0004] The utility model solves the problem that smoke and dust in the waste heat boiler easily enter the interior of the valve body when the valve of the existing gas blasting soot cleaning equipment is used, and provides a blasting soot blowing combined valve, which can effectively prevent smoke and dust in the waste heat boiler from entering the interior of the valve body, thereby extending the service life of the valve and reducing the labor intensity of the staff.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: a blasting sootblowing combination valve, comprising a lower cylinder and an upper cylinder arranged on the top of the lower cylinder, a sealing structure is provided at the connection between the lower cylinder and the upper cylinder, the lower cylinder and the upper cylinder are connected by the sealing structure, and the sealing structure also has a sealing effect on the upper cylinder.

[0006] The lower cylinder is connected to an inlet pipe on the outside and an outlet pipe on the bottom. A weight seal block is fixedly installed inside the lower cylinder. The weight seal block is lower than the inlet pipe. The top of the weight seal block is provided with a weight groove, and the bottom of the weight seal block is provided with a through hole connected to the weight groove. The gas shock wave can enter the lower cylinder through the inlet pipe and enter the waste heat boiler through the outlet pipe.

[0007] A lifting assembly is installed at the top of the upper cylinder. The output end of the lifting assembly extends into the interior of the upper cylinder and is connected to a wire rope. The lower end of the wire rope passes through the sealing structure and extends into the interior of the lower cylinder, where it is connected to a weight that matches the weight slot. The weight's fit within the weight slot of the weight sealing block effectively prevents smoke and dust from the waste heat boiler from entering the combination valve. The lifting assembly drives the weight up or down to control the opening and closing of the combination valve.

[0008] Furthermore, the sealing structure includes an upper plate, a lower plate, and a stuffing box. The upper plate is fixed to the top of the lower cylinder, the lower plate is fixed to the bottom of the upper cylinder, and the stuffing box is located at the bottom of the upper plate. The interior of the stuffing box is filled with wire mesh packing. The stuffing box and wire mesh packing effectively prevent smoke and dust from the waste heat boiler from entering the upper cylinder.

[0009] Furthermore, the diameter of the upper top plate is larger than that of the lower cylinder, the diameter of the lower bottom plate is larger than that of the upper cylinder, and the upper top plate and the lower bottom plate are bolted together to ensure that the upper cylinder and the lower cylinder are connected through the upper top plate and the lower bottom plate.

[0010] Furthermore, the lifting assembly is a pneumatic cylinder, the upper end of the steel wire rope is connected to the piston rod of the cylinder, and the lower end of the steel wire rope sequentially passes through the lower base plate, upper top plate, wire mesh packing, and stuffing box, and is connected to the weight. The steel wire rope passing through the wire mesh packing and connecting to the weight effectively prevents smoke and dust from adhering to the piston rod of the cylinder due to the action of the wire mesh packing.

[0011] Furthermore, the weight is located directly above the weight slot, the upper part of the weight is a cylindrical structure and the lower part is a truncated cone structure, the purpose of which is to improve the sealing effect between the weight and the weight sealing block, and effectively prevent smoke and dust in the waste heat boiler from entering the interior of the combination valve.

[0012] Furthermore, a first inspection hole is formed at the lower portion of the upper cylinder, and a first inspection door is provided at the first inspection hole; a second inspection hole is formed at the upper portion of the lower cylinder, and a second inspection door is provided at the second inspection hole. The first inspection door and the second inspection door facilitate replacement and maintenance of the wire rope and wire mesh packing.

[0013] Through the above technical solution, the beneficial effects of the utility model are:

[0014] The utility model has a reasonable structure and good use effect, solves the problem of loose sealing of the existing valve plug, can effectively prevent smoke and dust in the waste heat boiler from entering the interior of the combination valve, and prolongs the service life; it no longer requires staff to frequently repair and disassemble the valve, reducing the labor intensity of staff.

[0015] The utility model drives the weight to move up or down through the cooperation of the cylinder piston rod and the steel wire rope, thereby controlling the opening and closing action of the combination valve, thereby controlling the action of the gas shock wave entering the waste heat boiler; when the weight is located in the weight groove of the weight sealing block, the combination valve is in a closed state; when the weight leaves the weight groove of the weight sealing block, the combination valve is in an open state.

[0016] The utility model can effectively prevent smoke and dust in the waste heat boiler from entering the interior of the combination valve through the cooperation of the weight hammer and the weight hammer groove on the weight hammer sealing block; the upper part of the weight hammer is a cylindrical structure and the lower part is a frustum-shaped structure, and the weight hammer groove matches the weight hammer, so that smoke and dust are not easy to enter the lower cylinder of the combination valve, thereby extending the service life of the combination valve.

[0017] The utility model cylinder is connected to the heavy hammer by a steel wire rope passing through the stuffing box and the wire mesh stuffing. The wire mesh stuffing plays a sealing role, which can effectively prevent smoke and dust from entering the upper cylinder body and adhering to the piston rod of the cylinder, thereby extending the service life of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a blasting sootblowing combined valve of the utility model. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the structure of a blasting sootblowing combined valve of the utility model. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the structure of a blasting sootblowing combined valve of the utility model. Figure 3 ;

[0021] Figure 4 This is a structural diagram of the heavy hammer sealing block of the utility model;

[0022] Figure 5 It is a structural diagram of the heavy hammer of the utility model.

[0023] The numbers in the accompanying drawings are: 1 is the lower cylinder, 2 is the inlet pipe, 3 is the outlet pipe, 4 is the weight sealing block, 5 is the weight groove, 6 is the through hole, 7 is the upper top plate, 8 is the stuffing box, 9 is the wire mesh packing, 10 is the upper cylinder, 11 is the lower bottom plate, 12 is the cylinder, 13 is the wire rope, 14 is the weight, 15 is the first inspection door, and 16 is the second inspection door. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0025] like Figures 1 to 5 As shown, a combined blasting and sootblowing valve comprises a lower body 1 and an upper body 10 disposed on top of the lower body 1. A sealing structure is provided at the connection between the lower body 1 and the upper body 10. In this embodiment, the lower body 1 and the upper body 10 are both hollow cylindrical structures, connected by a sealing structure. The sealing structure also serves as a seal to prevent smoke and dust from entering the interior of the upper body 10.

[0026] The outer side of the lower cylinder 1 is connected to an inlet pipe 2, and the bottom of the lower cylinder 1 is connected to an outlet pipe 3; a weight sealing block 4 is fixedly installed inside the lower cylinder 1, and the height of the weight sealing block 4 is lower than the height of the inlet pipe 2. The top of the weight sealing block 4 is provided with a weight groove 5, and the bottom of the weight sealing block 4 is provided with a through hole 6 connected to the weight groove 5. In this embodiment, the inlet pipe 2 is installed in the middle of the lower cylinder 1. When the gas blasting and dust cleaning equipment is working, the generated gas shock wave can enter the lower cylinder 1 through the inlet pipe 2 and can enter the waste heat boiler through the outlet pipe 3. When the combination valve is in use, the outlet pipe 3 extends to the interior of the waste heat boiler; the through hole 6 allows the gas shock wave to enter the waste heat boiler through the outlet pipe 3.

[0027] A lifting assembly is provided at the top of the upper cylinder 10. The output end of the lifting assembly extends into the interior of the upper cylinder 10 and is connected to a steel wire rope 13. The lower end of the steel wire rope 13 passes through the sealing structure and extends into the interior of the lower cylinder 1, where it is connected to a weight 14. The weight 14 matches the weight slot 5. In this embodiment, the lifting assembly can drive the weight 14 to move up and down via the steel wire rope 13 to open and close the combination valve. When the weight 14 is located in the weight slot 5 of the weight sealing block 4, the combination valve is closed. The cooperation between the weight 14 and the weight sealing block 4 effectively prevents smoke and dust from the waste heat boiler from entering the combination valve.

[0028] The sealing structure includes an upper top plate 7, a lower bottom plate 11, and a stuffing box 8. The upper top plate 7 is fixedly mounted on the top of the lower cylinder 1, the lower bottom plate 11 is fixedly mounted on the bottom of the upper cylinder 10, and the stuffing box 8 is mounted on the bottom of the upper top plate 7. The interior of the stuffing box 8 is filled with wire mesh packing 9. In this embodiment, the stuffing box 8 is bolted to the bottom of the upper top plate 7 to facilitate removal of the stuffing box 8 and replacement of the wire mesh packing 9. The wire mesh packing 9 acts as a seal, effectively preventing smoke and dust from entering the interior of the upper cylinder 10.

[0029] The diameter of the upper top plate 7 is larger than that of the lower cylinder 1, and the diameter of the lower bottom plate 11 is larger than that of the upper cylinder 10. The upper top plate 7 and the lower bottom plate 11 are bolted together. In this embodiment, a plurality of bolts are arranged in a circular pattern on the lower bottom plate 11. The bolts and nuts cooperate to connect the upper top plate 7 and the lower bottom plate 11, thereby achieving the purpose of connecting the upper cylinder 1 and the lower cylinder 10.

[0030] The lifting assembly is a cylinder 12. The upper end of the wire rope 13 is connected to the piston rod of the cylinder 12. The lower end of the wire rope 13 sequentially passes through the lower base plate 11, the upper top plate 7, the wire mesh packing 9, and the stuffing box 8, and is connected to the weight 14. In this embodiment, the lower base plate 11, the upper top plate 7, and the stuffing box 8 are all provided with circular holes that match the wire rope 13. The wire rope 13 is connected to the weight 14 by passing through the wire mesh packing 9 to prevent smoke and dust from adhering to the piston rod of the cylinder 12, thereby extending the service life of the cylinder 12. After using the stuffing box 8 and the wire mesh packing 9, the service life of the cylinder 12 is extended from 15 days to 180 days.

[0031] The weight 14 is located directly above the weight slot 5. The weight 14 has a cylindrical upper portion and a truncated cone lower portion. In this embodiment, the weight slot 5 has a cylindrical upper portion and a truncated cone middle portion. The diameter of the lower portion of the weight 14 gradually decreases to improve the sealing effect between the weight 14 and the weight sealing block 4.

[0032] A first inspection hole is defined at the lower portion of the upper cylinder 10, and a first inspection door 15 is provided at the first inspection hole. A second inspection hole is defined at the upper portion of the lower cylinder 1, and a second inspection door 16 is provided at the second inspection hole. In this embodiment, the first inspection door 15 and the second inspection door 16 facilitate replacement and maintenance of the wire rope 13 and the wire mesh filler 9, thereby facilitating maintenance, reducing maintenance time, and lowering maintenance workload. The first inspection door 15 and the second inspection door 16 are connected to the upper cylinder 10 and the lower cylinder 1, respectively, via hinges. Both the first inspection door 15 and the second inspection door 16 have an arc-shaped structure and match the upper cylinder 10 and the lower cylinder 1, respectively. Asbestos ropes are installed on the inner edges of the first inspection door 15 and the second inspection door 16, so that the asbestos ropes can adhere to glass water during use, thereby improving the maintenance effect.

[0033] The working principle of the utility model is as follows: when the gas blasting ash cleaning equipment of the waste heat boiler is working, the gas shock wave generated by the gas blasting ash cleaning equipment enters the combination valve through the inlet pipe 2. At this time, the combination valve is in the open state, and the combination valve is opened by the piston rod of the cylinder 12. The piston rod of the cylinder 12 retracts, and the piston rod of the cylinder 12 lifts the weight 14 through the wire rope 13 so that the weight 14 completely leaves the weight groove 5. The gas shock wave enters the waste heat boiler through the outlet pipe 3, realizing the gas shock wave soot blowing operation.

[0034] When the gas blasting ash cleaning equipment of the waste heat boiler is not working, the combination valve is in a closed state, and the combination valve is closed by the piston rod of the cylinder 12. The piston rod of the cylinder 12 extends, and the piston rod of the cylinder 12 lowers the weight 14 through the wire rope 13, so that the weight 14 completely enters the weight groove 5, and the weight 14 cooperates with the weight sealing block 4 to achieve the effect of sealing.

[0035] When the combination valve needs to be inspected and the wire rope 9 needs to be replaced, the first inspection door 15 is opened, the upper end of the wire rope 13 is removed from the piston rod end of the cylinder 12, and then the second inspection door 16 is opened, the wire rope 13 and the weight 14 are taken out, and then the wire rope 13 is separated from the weight 14, and the inspection and maintenance work of replacing the wire rope 13 online can be realized.

[0036] When the combination valve needs to be inspected and the wire mesh packing 9 is replaced, the second inspection door 16 is opened, the bolts fixing the stuffing box 8 are removed, and then the stuffing box 8 and the old wire mesh packing 9 are taken out through the second inspection hole 16. After the old wire mesh packing 9 is taken out of the stuffing box 8, the wire mesh packing 9 can be replaced, and the inspection and maintenance work of replacing the wire mesh packing 9 online can be realized.

[0037] The embodiments described above are only preferred embodiments of the utility model and do not limit the scope of implementation of the utility model. Therefore, any equivalent changes or modifications made according to the technical solutions described in the patent scope of the utility model should be included in the scope of the patent application of the utility model.

Claims

1. A blasting sootblowing combined valve, characterized in that: It comprises a lower cylinder (1) and an upper cylinder (10) arranged on the top of the lower cylinder (1), and a sealing structure is provided at the connection between the lower cylinder (1) and the upper cylinder (10); The outer side of the lower cylinder (1) is connected to an inlet pipe (2), and the bottom of the lower cylinder (1) is connected to an outlet pipe (3); a weight sealing block (4) is fixedly provided inside the lower cylinder (1), the height of the weight sealing block (4) is lower than the height of the inlet pipe (2), a weight groove (5) is provided on the top of the weight sealing block (4), and a through hole (6) connected to the weight groove (5) is provided on the bottom of the weight sealing block (4); A lifting assembly is provided on the top of the upper cylinder (10), the output end of the lifting assembly extends to the interior of the upper cylinder (10) and is connected to a steel wire rope (13), the lower end of the steel wire rope (13) passes through a sealing structure and extends to the interior of the lower cylinder (1) and is connected to a weight (14), and the weight (14) matches the weight groove (5).

2. The blasting sootblowing combined valve according to claim 1, characterized in that: The sealing structure comprises an upper top plate (7), a lower bottom plate (11) and a stuffing box (8), wherein the upper top plate (7) is fixedly arranged on the top of the lower cylinder (1), the lower bottom plate (11) is fixedly arranged on the bottom of the upper cylinder (10), the stuffing box (8) is arranged on the bottom of the upper top plate (7), and the interior of the stuffing box (8) is filled with a wire mesh filler (9).

3. The blasting sootblowing combined valve according to claim 2, characterized in that: The diameter of the upper top plate (7) is greater than the diameter of the lower cylinder (1), the diameter of the lower bottom plate (11) is greater than the diameter of the upper cylinder (10), and the upper top plate (7) and the lower bottom plate (11) are connected by bolts.

4. The blasting sootblowing combined valve according to claim 2, characterized in that: The lifting assembly is a cylinder (12), the upper end of the steel wire rope (13) is connected to the piston rod of the cylinder (12), and the lower end of the steel wire rope (13) passes through the lower base plate (11), the upper top plate (7), the wire mesh filler (9) and the stuffing box (8) in sequence, and is connected to the weight (14).

5. The blasting sootblowing combined valve according to claim 1, characterized in that: The weight (14) is located directly above the weight slot (5), and the upper portion of the weight (14) is a cylindrical structure, and the lower portion is a truncated cone structure.

6. The blasting sootblowing combined valve according to claim 1, characterized in that: A first inspection hole is provided at the lower portion of the upper cylinder (10), and a first inspection door (15) is provided at the first inspection hole; a second inspection hole is provided at the upper portion of the lower cylinder (1), and a second inspection door (16) is provided at the second inspection hole.

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