Drainage water seal sealing device of converter primary dust removal purification system

Abstract

The utility model discloses a sewage water seal sealing device of a converter primary dedusting purification system, which comprises a water seal box body, a movable cover plate and a sealing insertion plate, the top of the water seal box body is provided with a manhole, the periphery of the manhole is encircled to form a first sealing groove, the lower end of the movable cover plate is arranged in the first sealing groove, and the lower end of the movable cover plate is arranged in the sealing insertion plate. A second sealing groove is defined by the top of the water seal box body around the control rod, the control rod penetrates through the sealing insertion plate, the lower end of the sealing insertion plate is arranged in the second sealing groove, and the first sealing groove and the second sealing groove are both filled with sealing media. The top of the water seal box body is provided with the first sealing groove and the second sealing groove which are filled with the sealing medium, the periphery of the operation rod is covered with the sealing insertion plate, the movable cover plate is inserted into the first sealing groove, the sealing insertion plate is inserted into the second sealing groove, sealing is achieved, and coal gas is prevented from overflowing; and meanwhile, the sealing insertion plate does not influence original normal action of the operating rod, the original structure is slightly transformed, and the cost is not greatly increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of steelmaking metallurgical equipment, and particularly to a blowdown water seal device of a converter primary dust removal purification system. BACKGROUND

[0002] The converter primary dust removal purification system mainly functions to cool and remove dust from the flue gas generated during the converter smelting process. The purification system includes two-stage Venturi scrubbers, a dehydrator, a blowdown water seal, and other equipment. After entering the OG system, the converter flue gas is sprayed into the coal gas washing water through the nozzles of the two-stage Venturi scrubbers, and the flue gas temperature is rapidly cooled from 900-1000℃ to 70-75℃. The fine dust in the flue gas aggregates and separates out after coming into contact with water, and is then discharged to the water station through the blowdown water seal. The blowdown water seal of the converter primary dust removal purification system uses various structural forms to discharge sewage containing a large amount of dust, prevent the escape of coal gas or the infiltration of air into the system, prevent mutual air leakage between the sewage discharge pipes, and prevent the reverse flow and overflow of coal gas, thereby causing a coal gas accident.

[0003] The existing blowdown water seal of the converter primary dust removal purification system is prone to mud accumulation. A manhole is provided on the side to facilitate cleaning. However, due to the excessive dust content in the converter flue gas, the blowdown water seal is prone to mud accumulation. After mud accumulation, the coal gas washing water needs to be stopped during the furnace shutdown process to enable the manhole to be opened for inspection and cleaning, thereby affecting production operation. In addition, the blowdown water seal is designed with a movable cover plate on the top and a blowdown weight control lever in the middle. Since the control lever needs to be moved up and down, the control lever is in the form of a hole around the periphery, which causes a gap to exist in the top cover plate of the blowdown water seal, and the water and coal gas in the coal gas washing water can overflow through the gap and drift to the working environment of the post personnel, thereby causing a coal gas poisoning accident. SUMMARY

[0004] To overcome the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a blowdown water seal device of a converter primary dust removal purification system.

[0005] The technical scheme adopted by the utility model to solve its technical problems is as follows: a blowdown water seal device of a converter primary dust removal purification system, comprising a water seal box body, a movable cover plate, and a sealing plug-in plate. A manhole is provided on the top of the water seal box body. A first sealing groove is formed around the periphery of the manhole. The lower end of the movable cover plate is arranged in the first sealing groove. A second sealing groove is formed around the control lever on the top of the water seal box body. The control lever is arranged in the sealing plug-in plate. The lower end of the sealing plug-in plate is arranged in the second sealing groove. Sealing medium is filled in the first sealing groove and the second sealing groove.

[0006] As a further improvement of the utility model, the sealing medium is water.

[0007] As a further improvement of the utility model, the sealing plug-in plate is welded to the outer peripheral wall of the control lever.

[0008] As a further improvement of the utility model: the movable cover plate is equipped with a handle.

[0009] As a further improvement of the utility model: the water seal box, the first sealing groove and the second sealing groove are integrally formed.

[0010] As a further improvement of the utility model: the depth of the sealing medium in the second sealing groove is greater than the maximum displacement of the upward movement of the sealing plug.

[0011] As a further improvement of the utility model: the first sealing groove is square in shape.

[0012] As a further improvement of the utility model: the second sealing groove is annular in structure.

[0013] As a further improvement of the utility model: the sealing plug is cylindrical in structure.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] 1. The utility model inserts the lower end of the movable cover plate into the first sealing groove filled with the sealing medium to realize sealing, prevents coal gas from overflowing or air from permeating into the system, opens the movable cover plate to clean silt and check silt in the sewage water seal during production, and does not affect the long-period stable operation of production.

[0016] 2. The second sealing groove is formed on the outer periphery of the water seal box relative to the operating rod, the sealing plug is arranged on the outer periphery of the operating rod, the plug-type sealing structure is adopted, the entire sewage water seal is ensured to be in a sealed state, coal gas does not overflow during the up-down operation of the operating rod, and the safety of the post personnel is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the sewage water seal sealing device of the utility model.

[0018] Figure 2 It is a structural schematic view of the movable cover plate and the first sealing groove of the utility model.

[0019] Figure 3 It is a top view of the movable cover plate and the first sealing groove of the utility model.

[0020] Figure 4 It is a structural schematic view of the sealing plug and the second sealing groove of the utility model.

[0021] Figure 5 It is a top view of the sealing plug and the second sealing groove of the utility model.

[0022] Figure 6 It is a structure diagram of the original sewage sealing sealing device.

[0023] Reference signs:

[0024] 1, water seal box, 2, movable cover plate, 3, sealing plugboard, 4, manhole, 5, first sealing groove, 6, second sealing groove, 7, operating rod, 8, sealing medium, 9, coal gas washing water. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model technical scheme will be described clearly and completely below in combination with specific embodiments of the utility model and corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0026] In order to solve the technical problems in the prior art, the utility model will be further described in combination with drawings and embodiments:

[0027] As Figures 1 to 5 Indicated, the utility model embodiment discloses a converter primary dust removal purification system's sewage sealing sealing device, including water seal box 1, movable cover plate 2 and sealing plugboard 3, the top of water seal box 1 is equipped with manhole 4, and the outer periphery of manhole 4 is surrounded and formed with first sealing groove 5, and the lower end of movable cover plate 2 is located in first sealing groove 5, and the top of water seal box 1 is surrounded operating rod 7 and formed with second sealing groove 6, and operating rod 7 is arranged in sealing plugboard 3, and the lower end of sealing plugboard 3 is located in second sealing groove 6, and first sealing groove 5 and second sealing groove 6 are filled with sealing medium 8.

[0028] By surrounding first sealing groove 5 in the outer periphery of manhole 4 of the top plate of water seal box 1, the movable cover plate 2 is covered in manhole 4, and the lower end is located in the sealing medium 8 in first sealing groove 5, sealing is realized by using sealing medium 8, the movable cover plate 2 can be opened to clean silt and check silt in the water seal box 1 in the production process, which does not affect the long-period stable operation of production. Second sealing groove 6 is designed on the top of water seal box 1, second sealing groove 6 is arranged on the outer periphery of operating rod 7, and sealing plugboard 3 is covered on the outer side of operating rod 7, the lower end of sealing plugboard 3 is placed in the sealing medium 8 in second sealing groove 6 to seal, so that the hole in the top of operating rod 7 is in a closed state during the up-down action of operating rod 7, the effect of preventing coal gas from leaking is achieved, and the operation safety of post personnel is ensured.

[0029] The inside of the water seal box 1 is filled with coal gas washing water 9, and the entry of the coal gas into the water seal box 1 is prior art and not the improvement direction of the present application, which will not be described here.

[0030] In some embodiments, the sealing medium 8 is water. By using the sealing principle of water, the first sealing groove 5 and the second sealing groove 6 are designed to achieve sealing, and at the same time, the original normal operation of the device body can be realized in the first sealing groove 5 and the second sealing groove 6 by using the plug-in plate form, that is, the sealing plug-in plate 3 does not affect the up-down operation of the lever 7, and the movable cover plate 2 does not affect manual blowdown and detection.

[0031] In some embodiments, the first sealing groove 5 is square in shape. Correspondingly, the movable cover plate 2 is designed in a square basin structure, the manhole 4 originally provided on the side of the blowdown water seal is changed to the top, the first sealing groove 5 is provided on the outer periphery of the manhole 4, and the movable cover plate 2 in the square basin structure is covered on the first sealing groove 5, and the four edges of the movable cover plate 2 can be inserted into the sealing medium 8 such as water for sealing.

[0032] Since there is basically no pressure inside the drain, the manhole 4 at the top of the water seal box 1 is sealed by using a sealed water groove + movable cover plate 2 to achieve the effect of coal gas escaping. After improvement, the original manhole 4 door of the blowdown water seal is removed and plugged, which is small in transformation amount, easy to implement, simple to maintain during operation, and safe and reliable.

[0033] In some embodiments, the second sealing groove 6 is in a ring structure. Further, the sealing plug-in plate 3 is in a cylindrical structure. The plug-in plate type water seal structure is designed outside the hole around the heavy lever 7 of the blowdown water seal, specifically the sealing plug-in plate 3 is installed on the body of the lever 7, and the second sealing groove 6 is installed on the top of the water seal box 1. The sealing plug-in plate 3 on the body of the lever 7 can follow the up-down operation of the lever 7 in the second sealing groove 6, and the sealing medium 8 such as water in the second sealing groove 6 plays a sealing role.

[0034] Of course, the second sealing groove 6 can also be designed in a square shape, and the sealing plug-in plate 3 is not limited to a cylindrical structure. The depth of the sealing medium 8 in the second sealing groove 6 is greater than the maximum displacement of the upward movement of the sealing plug-in plate 3.

[0035] In some embodiments, the sealing plug-in plate 3 is welded to the outer peripheral wall of the lever 7. The upper end of the sealing plug-in plate 3 is welded to the outside of the lever 7, and the lower end of the sealing plug-in plate 3 is kept in the sealing medium 8 in the second sealing groove 6. The sealing plug-in plate 3, the outer peripheral wall of the lever 7, and the second sealing groove 6 form a sealed space, achieving the prevention of coal gas escaping or air entering the system.

[0036] In some embodiments, the movable cover plate 2 is provided with a handle. The movable cover plate 2 can be lifted by the handle during production to clean the silt and check the silt in the blowdown water seal.

[0037] In some embodiments, the water seal box 1, the first sealing groove 5 and the second sealing groove 6 are integrally formed.

[0038] The embodiment cancels the existing blowdown water seal manhole 4 door, and adopts a welded sealing integral form, specifically, the first sealing groove 5 and the second sealing groove 6 are welded and integrated on the top of the water seal box 1.

[0039] The main function of the utility model is that the existing water seal side manhole is changed to the top of the water seal box, a first sealing groove is designed, a movable cover plate is inserted into the sealing medium of the first sealing groove, a sealing plug plate is installed on the outer periphery of the operating rod, a second sealing groove is designed on the top of the water seal box relative to the outer periphery of the operating rod, the sealing plug plate is inserted into the sealing medium of the second sealing groove for sealing, the device can be cleaned online, the operation rate of the device is improved, coal gas overflow is prevented, and the operation environment safety of post personnel is protected.

[0040] In summary, the ordinary skilled in the art can make other various corresponding transformation schemes according to the technical scheme and technical concept of the utility model without creative mental labor after reading the utility model document, and all belong to the range protected by the utility model.

Claims

1. A wastewater discharge sealing device for a converter primary dust removal and purification system, characterized in that, The device includes a water seal tank, a movable cover plate, and a sealing insert plate. The top of the water seal tank has a manhole, and a first sealing groove is formed around the outer periphery of the manhole. The lower end of the movable cover plate is located in the first sealing groove. The top of the water seal tank is surrounded by a control lever to form a second sealing groove. The control lever passes through the sealing insert plate, and the lower end of the sealing insert plate is located in the second sealing groove. Both the first and second sealing grooves are filled with a sealing medium.

2. The wastewater sealing device for a converter primary dust removal and purification system according to claim 1, characterized in that, The sealing medium is water.

3. The wastewater sealing device for a converter primary dust removal and purification system according to claim 1, characterized in that, The sealing plate is welded to the outer peripheral wall of the control lever.

4. The wastewater sealing device for a converter primary dust removal and purification system according to claim 1, characterized in that, The movable cover is equipped with a handle.

5. The wastewater sealing device for a converter primary dust removal and purification system according to claim 1, characterized in that, The water seal box, the first sealing groove, and the second sealing groove are integrally formed.

6. The wastewater sealing device for a converter primary dust removal and purification system according to claim 1 or 3, characterized in that, The depth of the sealing medium in the second sealing groove is greater than the maximum upward displacement of the sealing insert.

7. The wastewater sealing device for a converter primary dust removal and purification system according to claim 1, characterized in that, The first sealing groove is square in shape.

8. The wastewater sealing device for a converter primary dust removal and purification system according to claim 1, characterized in that, The second sealing groove has an annular structure.

9. A wastewater sealing device for a converter primary dust removal and purification system according to any one of claims 1, 2, 3, and 8, characterized in that, The sealing insert has a cylindrical structure.

Images