CN213686742U

CN213686742U - Waste heat boiler special for non-ferrous smelting and capable of online ash removal

Info

Publication number: CN213686742U
Application number: CN202022594791.9U
Authority: CN
Inventors: 胡军锋; 裴本超; 胡军国
Original assignee: Zhejiang Jiangtong Fuye Heding Copper Co ltd; Zhejiang Fuye Group Co ltd
Current assignee: Zhejiang Jiangtong Fuye Heding Copper Co ltd; Zhejiang Fuye Group Co ltd
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2021-07-13
Anticipated expiration: 2030-11-11

Abstract

The utility model provides a supporting exhaust-heat boiler that can online deashing is exclusively used in nonferrous smelting, boiler smoke box afterbody is equipped with the back tailboard, the welding has the takeover of quantity and position and boiler heat exchange tube one-to-one on the back tailboard, and the takeover is installed and is opened the sealing device that opens soon that closes, is equipped with the deashing rifle and can stretch into boiler smoke box from the sealing device that opens soon and carry out the deashing to corresponding boiler heat exchange tube. The utility model discloses can carry out the deashing to the boiler heat exchange tube under the not burden of subtracting of system, the state of not stopping production, be fit for the online deashing mode of single deashing operation, solve the frequent loss of stopping production that original off-line deashing mode caused, improve the operating efficiency greatly and improve the operation environment.

Description

Waste heat boiler special for non-ferrous smelting and capable of online ash removal

Technical Field

The utility model relates to a waste heat boiler which is specially used for nonferrous smelting and can clean ash on line.

Background

In recent years, waste heat boilers in the form of fire (smoke) pipes are often used in the anode furnace production process of the nonferrous smelting industry in a matching manner to recycle the waste heat of high-temperature waste gas of various metallurgical furnaces, so that the exhaust gas temperature is reduced, the requirements of tail gas treatment and environmental protection emission are met, and the waste heat boilers are indispensable main waste heat recovery process equipment in the modern metallurgical process.

As the components of the nonferrous metallurgy high-temperature waste flue gas are complex, the flue gas contains high smoke dust, when the flue gas passes through a heat exchange tube of a boiler in normal production, a large amount of fine powder smoke dust is easy to be bonded, settled and blocked, so that the flue gas resistance is continuously increased, the heat exchange efficiency of the boiler is gradually reduced, the production energy consumption is increased, the operation cost is increased, and the system is frequently reduced in load or stopped in production.

According to the figure 1, the existing fire (smoke) pipe waste heat boiler only has a large manhole ash removal door at an inlet and outlet box body and an ash discharge pipe at the bottom of the box body for the regular ash removal operation of the boiler. According to the structural characteristics of the existing fire (smoke) tube waste heat boiler, a heat exchange tube generally adopts a steel tube with a small diameter specification, smoke is introduced into the tube, and the tube is externally contacted with a heat exchange medium (water vapor) for heat exchange. According to current boiler deashing operation mode, be off-line deashing promptly, must shut down the stove and produce the back and can operate, cause metallurgical technology production to break off, system's operating rate greatly reduced, and need open and resume manhole cover annular fastening bolt and change handhole cover seal gasket during the deashing, all smoke and dust are basically cleared out of the stove from putting ash pipe or manhole with the rake, waste time and energy, the operation labour increases, the dust that has the heavy metal particle easily drifts away along with the air, cause the site environment abominable, the production area low latitude area heavy metal dust pollution is serious, influence staff's health and clean environmental protection.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the not enough of above-mentioned current device, provide one kind and be exclusively used in nonferrous smelting supporting exhaust-heat boiler that can online deashing, can not subtract the burden, not shut down the state down to the boiler heat exchange tube deashing in the system, be fit for the online deashing mode of single deashing operation, solved the frequent loss of stopping production that original off-line deashing mode caused, improve the operating efficiency greatly and improve the operation environment.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a be exclusively used in waste heat boiler that supporting can online deashing of nonferrous smelting, boiler smoke box afterbody are equipped with the back tailboard, the welding has the takeover of quantity and position and boiler heat exchange tube one-to-one on the back tailboard, and the takeover is installed and is opened the sealing device that opens soon that closes, is equipped with the deashing rifle and can stretch into boiler smoke box from the quick sealing device department of opening and carry out the deashing to corresponding boiler heat exchange tube, and the clearance is accomplished the back, withdraws from the deashing rifle, closes quick sealing device.

Preferably, the quick-opening sealing device comprises a cylinder body, a positioning pipe, a pressing cover and an operating rod, wherein the inner end of the cylinder body is welded with the connecting pipe, the positioning pipe is fixed inside the cylinder body, a circumferential groove is formed in the positioning pipe, a notch communicated with the front end is formed in the groove, the pressing cover abuts against the outer end of the cylinder body, the inner end of the operating rod vertically penetrates through the middle of the pressing cover, a thread is arranged at the end of the operating rod, and a positioning pin is sleeved at the inner end of the operating rod and fixed. When the device is closed, the end part of the positioning pin is located in the groove of the positioning tube to limit the axial movement of the operating rod, the operating rod limits the axial movement of the gland, the gland is made to be tightly attached to the barrel, when the device needs to be opened, the operating rod is rotated to enable the end part of the positioning pin to move to the notch, the operating rod and the gland can be taken down, the ash removal gun can stretch into ash removal from the opening, and the quick-opening sealing device is closed by reverse operation after the ash removal gun is completed.

Preferably, a sealing ring is arranged on the inner side of the gland and plays a role in sealing when the gland is closed and screwed down.

Preferably, a handle is arranged on the outer side of the gland and welded on the outer surface of the gland, so that the switch operation is facilitated.

Preferably, the outer end of the operating rod is provided with a cross rod which is vertically welded, so that the operating rod can be conveniently rotated.

Preferably, the ash removal rifle includes hollow barrel, and hollow barrel rear portion is connected with the air and takes over, and the front end is equipped with the air-cooled rifle head, and the last circumference of air-cooled rifle head arranges the aperture of a certain amount and spouts the mouth. After the external compressed air of air takeover, the inside cooling rifle head of ventilating of body of a gun, the rifle head thermal deformation when preventing to disclose the ash, and the flue dust disturbance in the heat exchange tube is strengthened from the spout ejection to take away along with flue gas and afterbody negative pressure suction, improve the deashing efficiency greatly, shorten the deashing time.

Preferably, the rear end of the hollow barrel is provided with an end cover which plays a role in sealing and is convenient to hold.

The beneficial effects of the utility model reside in that: 1. the utility model discloses can carry out the deashing to the boiler heat exchange tube under the not burden of subtracting of system, the state of not stopping production, be fit for the online deashing mode of single deashing operation, solve the frequent loss of stopping production that original off-line deashing mode caused, improve the operating efficiency greatly and improve the operation environment. The method has the advantages that the quick, efficient and reasonable ash removal operation method is realized, and the economical, energy-saving and environment-friendly long-term continuous production operation of the boiler is promoted.

2. The boiler heat exchange tube is mainly blocked at the front half part, but the quick-opening sealing device is particularly arranged at the tail part of the boiler, and ash is removed from the tail part of the boiler to the front part.

3. Because the number of the heat exchange tubes of the boiler is large, the independent ash removal is carried out one by one, the heat exchange performance of the boiler and the production load of the metallurgical furnace are not influenced completely, and the online ash removal mode in the real sense is realized.

4. The quick-opening sealing device is simple and small in structure, is composed of small parts, is convenient to process, simple and convenient to install on site, wide and reasonable in position, flexible, quick and labor-saving to operate, good in sealing performance and free of external cold air leakage.

5. Adopt hollow tube design, external compressed air's deashing rifle, the rifle head is heated and is warp when preventing to disclose the ash, strengthens the interior smoke and dust disturbance of heat exchange tube to take away along with flue gas and afterbody negative pressure suction, improve deashing efficiency greatly, shorten the deashing time.

Drawings

FIG. 1 is a schematic diagram of a prior art configuration;

fig. 2 is a schematic structural diagram of the present invention;

fig. 3 is a perspective view of the medium-fast opening sealing device of the present invention;

fig. 4 is a front view of the ash removal gun of the present invention.

The main elements in the figures are symbolically illustrated: 1. a boiler smoke box; 2. a rear tail plate; 3. taking over a pipe; 100. a quick-opening sealing device; 101. a barrel; 102. a positioning tube 102.1, a groove; 103. a gland; 104. an operating lever; 105. positioning pins; 106. a thin nut; 107. a seal ring; 108. a handle; 200. a soot cleaning gun; 201. a hollow barrel; 202. an air connection pipe; 203. an air-cooled lance head; 204. and (4) end covers.

Detailed Description

The invention will be further explained by means of the following description and the attached drawings.

The implementation mode is as follows: as shown in figure 2, the waste heat boiler special for non-ferrous smelting and capable of online ash removal is characterized in that a boiler smoke box 1 is arranged at the tail of the boiler, a rear tail plate 2 is arranged at the rear part of the boiler smoke box 1, connecting pipes 3 in one-to-one correspondence with boiler heat exchange pipes in quantity and direction are welded on the rear tail plate 2, and the connecting pipes 3 are provided with quick-opening sealing devices 100 capable of being opened and closed.

Referring to fig. 3, the quick-opening sealing device 100 includes a cylinder 101, a positioning tube 102, a gland 103 and an operating rod 104, the inner end of the cylinder 101 is welded to the adapter 3, the positioning tube 102 is fixed inside the cylinder, the positioning tube 102 is provided with a circumferential groove 102.1, the groove 102.1 is provided with a notch communicated with the front end, the gland 103 abuts against the outer end of the cylinder 101, the inner end of the operating rod 104 vertically passes through the middle of the gland 103, the end of the operating rod is provided with a thread, and the inner end of the operating rod 104 is sleeved with a positioning pin 105 and fixed by a thin nut 106.

Wherein, the gland 103 is provided with a sealing ring 107 at the inner side and a handle 108 at the outer side. In addition, the outer end of the operating rod 104 is provided with a cross bar welded vertically.

Referring to fig. 4, the ash removal lance 200 can extend into the boiler smoke box 1 from the opened quick-opening sealing device 100 to remove ash from the corresponding boiler heat exchange tube. The ash removal gun 200 comprises a hollow gun barrel 201, an end cover 204 is arranged at the rear end of the hollow gun barrel 201, an air connecting pipe 202 is connected to the position, close to the end cover 204, of the rear portion, an air cooling gun head 203 is arranged at the front end, and a certain number of small-bore nozzles are circumferentially arranged on the air cooling gun head 203.

The ash removal operation step: firstly, external high-pressure air is connected into the ash removal gun 200 for standby; then the gland 103 in the quick-opening sealing device 100 is opened, namely the operating rod 104 is screwed anticlockwise by one hand, the positioning pin 105 is rotated to the position of the notch 102.1 of the groove of the positioning tube 102, and then the gland 103 can be taken down; then horizontally inserting the prepared ash cleaning gun 200 into the heat exchange tube from the tail part along the cylinder body 101, and dredging the ash blocking smoke tube; after cleaning, the deashing gun 200 is withdrawn, the gland 103 is sleeved, namely the operating rod 104 is screwed clockwise, and the pin 105 to be positioned is rotated out of the notch and clamped into the groove 102.1. All the heat exchange tubes are operated according to the method.

The above description is only the specific embodiments of the present invention, but the structural features of the present invention are not limited thereto, the present invention can be used in similar products, and any person skilled in the art is in the field of the present invention, and all the changes or modifications made are covered by the claims of the present invention.

Claims

1. The utility model provides a be exclusively used in nonferrous smelting supporting exhaust-heat boiler that can online deashing, the boiler afterbody is boiler smoke box (1), and boiler smoke box (1) rear portion is equipped with back tailboard (2), its characterized in that: the boiler heat exchange tube dust removing device is characterized in that connecting tubes (3) in the number and the directions corresponding to the boiler heat exchange tubes one to one are welded on the rear tail plate (2), the connecting tubes (3) are provided with quick-opening sealing devices (100) capable of being opened and closed, and dust removing guns (200) are arranged and can extend into boiler smoke boxes (1) from the opened quick-opening sealing devices (100) to remove dust of the corresponding boiler heat exchange tubes.

2. The waste heat boiler special for nonferrous smelting matched online ash removal according to claim 1, characterized in that: the quick-opening sealing device (100) comprises a cylinder body (101), a positioning pipe (102), a gland (103) and an operating rod (104), the inner end of the cylinder body (101) is welded with a connecting pipe (3), the positioning pipe (102) is fixed inside the positioning pipe, a circumferential groove (102.1) is formed in the positioning pipe (102), a notch communicated with the front end is formed in the groove (102.1), the gland (103) is abutted to the outer end of the cylinder body (101), the inner end of the operating rod (104) vertically penetrates through the middle of the gland (103), a thread is arranged at the end of the operating rod, and a positioning pin (105) is sleeved at the inner end of the operating rod (104) and fixed through a thin nut (106).

3. The waste heat boiler special for nonferrous smelting matched online ash removal according to claim 2 is characterized in that: and a sealing ring (107) is arranged on the inner side of the gland (103).

4. The waste heat boiler special for nonferrous smelting matched online ash removal according to claim 2 is characterized in that: and a handle (108) is arranged on the outer side of the gland (103).

5. The waste heat boiler special for nonferrous smelting matched online ash removal according to claim 4, characterized in that: and a cross rod which is vertically welded is arranged at the outer end of the operating rod (104).

6. The exhaust-heat boiler special for nonferrous smelting matched online ash removal according to any one of claims 2 to 5, characterized in that: the deashing rifle (200) is connected with air connection pipe (202) including hollow barrel (201), hollow barrel (201) rear portion, and the front end is equipped with air-cooled rifle head (203), and the circumference arranges the aperture nozzle of a certain amount on air-cooled rifle head (203).

7. The waste heat boiler special for nonferrous smelting matched online ash removal according to claim 6, characterized in that: an end cover (204) is arranged at the rear end of the hollow gun tube (201).