Manual hot blast stove slag poking opening device in coal milling system

Abstract

The utility model belongs to the technical field of hot-blast stoves of coal milling systems, and particularly relates to a slag poking opening device of a manual hot-blast stove in a coal milling system, which comprises a hot-blast stove ash bucket, an access hole is arranged at the bottom of the hot-blast stove ash bucket and provided with a slag poking pipe, and the slag poking pipe is provided with a slag poking rod. A first protruding edge is arranged outside the top end of the slag poking pipe, a first blocking edge is arranged inside the bottom end of the slag poking pipe, a first inner sleeve is arranged in the slag poking pipe, a second protruding edge is arranged outside the top end of the first inner sleeve, a second blocking edge is arranged inside the bottom end of the first inner sleeve, a second inner sleeve is arranged in the first inner sleeve, and a cover plate is fixed to the bottom end of the second inner sleeve. A threaded sleeve is arranged in the bottom end of the second inner sleeve, a third protruding edge is arranged outside the top end of the first inner sleeve, and a fourth protruding edge is arranged outside the bottom end of the first inner sleeve. According to the device, the first inner sleeve and the second inner sleeve which are telescopic are used for deslagging the ash bucket of the hot-blast stove, dust escape in the deslagging process is reduced, the health of workers is protected, the sealing performance can be improved, and air is prevented from entering the hot-blast stove.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the hot blast stove technical field of coal mill system, concretely relates to a kind of manual hot blast stove slag poking opening device in coal mill system. BACKGROUND

[0002] In the operation of coal mill system, hot blast stove is needed for coal drying to provide dry process hot air for coal mill, and hot blast stove is composed of furnace body, burner and related electrical and mechanical components. In the operation of hot blast stove, slag is easy to accumulate at the bottom of hot blast stove and cannot be discharged from electro-hydraulic push rod, which gradually increases the slag accumulation at the bottom of hot blast stove, seriously affecting the safe and stable operation of coal mill system.

[0003] After searching, there is a kind of manual hot blast stove slag poking opening device in coal mill system disclosed in the prior art with application number CN202121467806.3, which uses a slag poking rod to penetrate into the bottom of the hot blast stove ash bucket along the slag poking pipe for slag discharge, which is convenient to operate and avoids blockage, effectively solving the problem of slag accumulation at the bottom of the hot blast stove. However, in this scheme, when the worker uses the slag poking rod to poke slag into the slag poking pipe, due to the gap between the slag poking rod and the slag poking pipe, some dust will escape from the gap and scatter into the air, forming dust and causing harm to the worker's body. In addition, the sealing performance of the slag poking pipe is not good, and the upper end of the slag poking pipe is only sealed by a cover plate with an iron chain. Once a large amount of slag is generated in the combustion area, a strong impact airflow will be generated when a large amount of slag falls into the hot blast stove ash bucket, which may push open the cover plate, causing dust to escape and causing environmental pollution.

[0004] Therefore, it is urgent to improve. UTILITY MODEL CONTENTS

[0005] In view of the above defects in the prior art, the utility model provides a kind of manual hot blast stove slag poking opening device in coal mill system, including hot blast stove ash bucket, the bottom of hot blast stove ash bucket is provided with access hole, the middle part of access hole is welded with slag poking pipe, slag poking pipe is equipped with slag poking rod, slag poking pipe is inclinedly arranged, the outside of the top end of slag poking pipe is provided with first convex edge, the inside of the bottom end of slag poking pipe is provided with first stop edge, first inner sleeve is arranged in the inside of slag poking pipe, the outside of the top end of first inner sleeve is provided with second convex edge matched with first stop edge, the inside of the bottom end of first inner sleeve is provided with second stop edge, second inner sleeve is arranged in the inside of first inner sleeve, the bottom end of second inner sleeve is fixed with cover plate, the inside of the bottom end of second inner sleeve is fixedly provided with threaded sleeve with internal thread hole, the outside of the top end of first inner sleeve is provided with third convex edge matched with second stop edge, the outside of the bottom end of first inner sleeve is provided with fourth convex edge.

[0006] Optionally, the length of the slag poking pipe is less than the length of the first inner sleeve, and the length of the first inner sleeve is less than the length of the second inner sleeve.

[0007] Optionally, two first half annular plates are arranged between the first convex edge of the slag poking pipe and the second convex edge of the first inner sleeve, and two second half annular plates are arranged between the second convex edge of the first inner sleeve and the third convex edge of the second inner sleeve.

[0008] Specifically, the two first half annular plates can be combined into a complete first circular annular plate, the diameter of the central hole of the first circular annular plate is greater than the outer diameter of the first inner sleeve and less than the outer diameter of the second convex edge of the first inner sleeve, and the outer diameter of the first circular annular plate is greater than the inner diameter of the slag poking pipe, so as to fix the first inner sleeve; the two second half annular plates can be combined into a complete second circular annular plate, the diameter of the central hole of the second circular annular plate is greater than the outer diameter of the second inner sleeve and less than the outer diameter of the third convex edge of the second inner sleeve, and the outer diameter of the second circular annular plate is greater than the inner diameter of the first inner sleeve, so as to fix the second inner sleeve.

[0009] Optionally, one end of the slag poking rod is provided with external threads matched with the internal threaded hole of the threaded sleeve.

[0010] Optionally, the lower end of the hot blast furnace hopper is provided with a slag discharging electro-hydraulic push rod, and a material level meter is further installed in the hot blast furnace hopper.

[0011] Specifically, the slag discharging electro-hydraulic push rod is used for discharging slag for the hot blast furnace hopper, and the material level meter is used for detecting the material level height of the slag accumulation in the hot blast furnace hopper.

[0012] The utility model also includes other components which can make the manual hot blast furnace slag poking opening device in a coal grinding system normally used, and are all conventional technical means in the field. In addition, the devices or components not limited in the utility model all adopt conventional technical means in the field, such as the slag discharging electro-hydraulic push rod and the material level meter.

[0013] The working principle of the utility model is that when the hot blast furnace is running, the first inner sleeve is accommodated in the slag poking pipe, and the top end of the first inner sleeve slightly extends out of the slag poking pipe, two first half ring plates are embedded between the top ends of the two, the pipe opening of the first inner sleeve is fixed at the pipe opening of the slag poking pipe through the two first half ring plates, at the same time, the second inner sleeve is accommodated in the first inner sleeve, and the top end of the second inner sleeve slightly extends out of the first inner sleeve, two second half ring plates are embedded between the top ends of the two, the pipe opening of the second inner sleeve is fixed at the pipe opening of the first inner sleeve through the two second half ring plates, the cover plate fixed at the bottom end of the second inner sleeve and the convex edge and the blocking edge matched between the slag poking pipe, the first inner sleeve and the second inner sleeve play a sealing role, the upper part of the hot blast furnace ash bucket is the combustion zone of the hot blast furnace, the slag produced after the full combustion of the pulverized coal in the combustion zone falls into the hot blast furnace ash bucket and is accumulated here, the slag discharge electro-hydraulic push rod is opened periodically during the running to discharge the slag, if the pulverized coal burned in the hot blast furnace is easy to coke at this time, the slag falling into the hot blast furnace ash bucket cannot be discharged, which can cause the hot blast furnace ash bucket to be blocked, the slag in the hot blast furnace ash bucket can be accumulated more and more at this time, the high material level alarm of the material level meter is triggered, at this time, the worker can make the end with external threads of the slag poking rod extend into the second inner sleeve, screw the slag poking rod and the threaded sleeve to be fixed, then the first half ring plate and the second half ring plate are removed, the slag poking rod is poked inward, and then the first inner sleeve and the second inner sleeve are extended out to manually discharge the slag, the cover plate at the bottom end of the second inner sleeve and the sealing effect of the convex edge and the blocking edge between the slag poking pipe, the first inner sleeve and the second inner sleeve reduce the dust escaping outward and avoid the damage to the worker's body, after the operation is completed, the slag poking rod is withdrawn, the second inner sleeve is driven by the slag poking rod to shrink into the first inner sleeve, the fourth convex edge on the second inner sleeve drives the first inner sleeve to shrink into the slag poking pipe, until the first inner sleeve and the second inner sleeve are all shrunk into the slag poking pipe and are fixed by the first half ring plate and the second half ring plate, finally, the slag poking rod is screwed reversely, and the slag poking rod is removed to prevent the air from entering the hot blast furnace.

[0014] The utility model has the advantages of simple structure and convenient use, the first inner sleeve and the second inner sleeve are arranged in the slag poking pipe, the hot blast furnace ash bucket is manually discharged by the telescopic structure, the dust escaping during the slag discharge process is reduced, the worker is protected, the cover plate at the bottom end of the second inner sleeve and the convex edge and the blocking edge matched between the slag poking pipe, the first inner sleeve and the second inner sleeve can improve the sealing effect, the air can be prevented from entering the hot blast furnace, the dust escaping can be reduced, and the on-site environment is protected. ACCURATE DRAWING

[0015] The utility model is further described below in combination with the drawings and examples.

[0016] Figure 1 It is the whole structure schematic diagram of the utility model.

[0017] Figure 2 The structural schematic view of the first inner sleeve pipe and the second inner sleeve pipe when being retracted in the slag poking pipe.

[0018] Figure 3 The Figure 2 The enlarged schematic view of the A part structure.

[0019] Figure 4 The partial exploded view of the first half ring plate and the second half ring plate at the top end pipe opening of the slag poking pipe.

[0020] Figure 5 The structural schematic view of the first inner sleeve pipe and the second inner sleeve pipe when being retracted in the slag poking pipe.

[0021] Figure 6 The Figure 5 The enlarged schematic view of the B part structure.

[0022] In the figure: 1. hot blast furnace ash bucket, 2. access hole, 3. slag poking pipe, 4. slag poking rod, 5. first convex edge, 6. first stop edge, 7. first inner sleeve pipe, 8. second convex edge, 9. second stop edge, 10. second inner sleeve pipe, 11. threaded sleeve, 12. third convex edge, 13. fourth convex edge, 14. first half ring plate, 15. second half ring plate, 16. electric hydraulic push rod for discharging slag. DETAILED DESCRIPTION

[0023] The present application will be described in detail below with reference to the drawings and specific embodiments in the present application, and the description herein is only used to explain the present application, but not as a limitation to the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor, any modification, equivalent replacement, improvement, etc., should be included in the protection scope of the present application.

[0024] EMBODIMENT

[0025] As Figures 1-6The utility model discloses a kind of manual hot blast stove poking slag port devices in coal mill system, including hot blast stove ash bucket 1, the bottom of hot blast stove ash bucket 1 is provided with access hole 2, access hole 2 middle part is welded with poking slag pipe 3, poking slag pipe 3 is cooperatively provided with poking slag rod 4, poking slag pipe 3 is obliquely arranged, the outside of the top end of poking slag pipe 3 is provided with first convex edge 5, the inside of the bottom end of poking slag pipe 3 is provided with first stop edge 6, first inner sleeve 7 is arranged in the inside of poking slag pipe 3, the outside of the top end of first inner sleeve 7 is provided with second convex edge 8 matched with first stop edge 6, the inside of the bottom end of first inner sleeve 7 is provided with second stop edge 9, second inner sleeve 10 is arranged in the inside of first inner sleeve 7, the bottom end of second inner sleeve 10 is fixed with cover plate, the inside of the bottom end of second inner sleeve 10 is fixedly provided with threaded sleeve 11 with internal thread hole, the outside of the top end of first inner sleeve 7 is provided with third convex edge 12 matched with second stop edge 9, the outside of the bottom end of first inner sleeve 7 is provided with fourth convex edge 13.

[0026] In addition, the length of the poking slag pipe 3 is less than the length of the first inner sleeve 7, and the length of the first inner sleeve 7 is less than the length of the second inner sleeve 10. The first convex edge 5 of the poking slag pipe 3 and the second convex edge 8 of the first inner sleeve 7 are cooperatively provided with two first half-annular plates 14, and the second convex edge 8 of the first inner sleeve 7 and the third convex edge 12 of the second inner sleeve 10 are cooperatively provided with two second half-annular plates 15. The two first half-annular plates 14 can be combined into a complete first circular annular plate, the diameter of the central hole of the first circular annular plate is greater than the outer diameter of the first inner sleeve 7 and less than the outer diameter of the second convex edge 8 of the first inner sleeve 7, and the outer diameter of the first circular annular plate is greater than the inner diameter of the poking slag pipe 3, for fixing the first inner sleeve 7. The two second half-annular plates 15 can be combined into a complete second circular annular plate, the diameter of the central hole of the second circular annular plate is greater than the outer diameter of the second inner sleeve 10 and less than the outer diameter of the third convex edge 12 of the second inner sleeve 10, and the outer diameter of the second circular annular plate is greater than the inner diameter of the first inner sleeve 7, for fixing the second inner sleeve 10.

[0027] In addition, one end of the poking slag rod 4 is provided with an external thread matched with the internal thread hole of the threaded sleeve 11. The lower end of the hot blast stove ash bucket 1 is provided with a slag discharge electro-hydraulic push rod 16, and a level meter is also installed in the hot blast stove ash bucket 1. The slag discharge electro-hydraulic push rod 16 is used for discharging slag for the hot blast stove ash bucket 1, and the level meter is used for detecting the material level height of the accumulated slag in the hot blast stove ash bucket 1.

[0028] The working principle of the utility model is that when the hot blast furnace is running, the first inner sleeve pipe 7 is accommodated in the slag poking pipe 3, and the top end of the first inner sleeve pipe 7 slightly extends out of the slag poking pipe 3, two first half ring plates 14 are embedded between the top ends of the two, the pipe opening of the first inner sleeve pipe 7 is fixed at the pipe opening of the slag poking pipe 3 through the two first half ring plates 14, at the same time, the second inner sleeve pipe 10 is accommodated in the first inner sleeve pipe 7, and the top end of the second inner sleeve pipe 10 slightly extends out of the first inner sleeve pipe 7, two second half ring plates 15 are embedded between the top ends of the two, the pipe opening of the second inner sleeve pipe 10 is fixed at the pipe opening of the first inner sleeve pipe 7 through the two second half ring plates 15, the cover plate fixed at the bottom end of the second inner sleeve pipe 10 and the convex edge and the blocking edge matched between the slag poking pipe 3, the first inner sleeve pipe 7 and the second inner sleeve pipe 10 play a sealing role; the upper part of the hot blast furnace ash bucket 1 is the combustion zone of the hot blast furnace, the slag produced after the full combustion of the pulverized coal in the combustion zone falls into the hot blast furnace ash bucket 1 and is accumulated here, when running, the slag discharge electro-hydraulic push rod 16 is opened periodically to discharge slag, if the pulverized coal burned in the hot blast furnace is easy to coke at this time, the slag falling into the hot blast furnace ash bucket 1 cannot be discharged, which can cause the hot blast furnace ash bucket 1 to be blocked, at this time, the slag in the hot blast furnace ash bucket 1 can be accumulated more and more, and the high material level alarm of the material level meter is triggered, at this time, the worker can make the end with external threads of the slag poking rod 4 extend into the second inner sleeve pipe 10, screw the slag poking rod 4 and the threaded sleeve 11, then disassemble the first half ring plate 14 and the second half ring plate 15, and stir the slag poking rod 4 inward, then the first inner sleeve pipe 7 and the second inner sleeve pipe 10 are extended out to manually discharge slag, the sealing role of the cover plate at the bottom end of the second inner sleeve pipe 10 and the convex edge and the blocking edge matched between the slag poking pipe 3, the first inner sleeve pipe 7 and the second inner sleeve pipe 10 reduces the dust escaping outward and avoids causing damage to the body of the worker; after the operation is completed, the slag poking rod 4 is withdrawn, the second inner sleeve pipe 10 is driven by the slag poking rod 4 to shrink into the first inner sleeve pipe 7, the fourth convex edge 13 on the second inner sleeve pipe 10 drives the first inner sleeve pipe 7 to shrink into the slag poking pipe 3, until the first inner sleeve pipe 7 and the second inner sleeve pipe 10 are all shrunk into the slag poking pipe 3, and are fixed by the first half ring plate 14 and the second half ring plate 15, finally, the slag poking rod 4 is screwed reversely, and the slag poking rod 4 is taken down to prevent air from entering the hot blast furnace.

[0029] The above has described the embodiments of the utility model, the above description is exemplary, is not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A manual hot blast furnace slag poking opening device in a coal grinding system, comprising a hot blast furnace ash bucket, a bottom of the hot blast furnace ash bucket is provided with an inspection opening, a middle of the inspection opening is welded with a slag poking pipe, and the slag poking pipe is matched with a slag poking rod, characterized in that: The slag poking pipe is obliquely arranged, the outer portion of the top end of the slag poking pipe is provided with a first convex edge, the inner portion of the bottom end of the slag poking pipe is provided with a first blocking edge, the inner portion of the slag poking pipe is provided with a first inner sleeve, the outer portion of the top end of the first inner sleeve is provided with a second convex edge matched with the first blocking edge, the inner portion of the bottom end of the first inner sleeve is provided with a second blocking edge, the inner portion of the first inner sleeve is provided with a second inner sleeve, the bottom end of the second inner sleeve is fixed with a cover plate, the inner portion of the bottom end of the second inner sleeve is fixedly provided with a threaded sleeve with an inner threaded hole, the outer portion of the top end of the first inner sleeve is provided with a third convex edge matched with the second blocking edge, and the outer portion of the bottom end of the first inner sleeve is provided with a fourth convex edge.

2. The manual stoking opening device for hot blast stove in coal grinding system according to claim 1, characterized in that: The length of the slag poking pipe is less than the length of the first inner sleeve, and the length of the first inner sleeve is less than the length of the second inner sleeve.

3. The manual stoking opening device for hot blast stove in coal grinding system according to claim 2, characterized in that: Two first half-ring plates are arranged in cooperation between the first convex edge of the slag poking pipe and the second convex edge of the first inner sleeve, and two second half-ring plates are arranged in cooperation between the second convex edge of the first inner sleeve and the third convex edge of the second inner sleeve.

4. The manual stoking opening device for hot blast stove in coal grinding system according to claim 3, characterized in that: One end of the slag poking rod is provided with an outer thread matched with the inner threaded hole of the threaded sleeve.

5. The manual stoking opening device for hot blast stove in coal grinding system according to claim 4, characterized in that: The lower end of the hot blast furnace ash bucket is provided with a slag discharging electro-hydraulic push rod.

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