CN216205367U

CN216205367U - Cupola furnace for rock wool production

Info

Publication number: CN216205367U
Application number: CN202122016461.6U
Authority: CN
Inventors: 杨胜辉; 金永杰; 曹保舫
Original assignee: Macheng Sunshine Energy Saving Thermal Insulation Material Co ltd
Current assignee: Macheng Sunshine Energy Saving Thermal Insulation Material Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2022-04-05
Anticipated expiration: 2031-08-25

Abstract

The utility model discloses a cupola furnace for rock wool production, and belongs to the technical field of rock wool production. Including cupola (1), tail gas processing apparatus and emergent chimney (2), the tail gas export of cupola (1) is connected with emergent chimney (2) through the pipeline that has the pressure detection structure, emergent chimney (2) are connected with tail gas processing apparatus through the pipeline that has the tail gas fan, be equipped with on the gas vent at emergent chimney (2) top and can be with its gas vent confined chimney lid (3), the bottom of emergent chimney (2) is equipped with star type tripper (12). The pressure in the cupola furnace is adjusted by arranging an emergency chimney to avoid the influence of overlarge pressure on the operation of the cupola furnace; meanwhile, partial dust in the cupola furnace tail gas can be separated, and the treatment pressure of the tail gas treatment device is reduced.

Description

Cupola furnace for rock wool production

Technical Field

The utility model belongs to the technical field of rock wool production, and particularly relates to a cupola furnace for producing rock wool.

Background

The rock wool is an inorganic fiber prepared from natural rocks such as basalt, gabbon, dolomite, iron ore, bauxite and the like as main raw materials through high-temperature melting and fiberization. The fibrous regenerated mineral tissue made from the raw materials through high temperature and high pressure is called rock wool because the shape is exactly like the shape of the rock wool, and is a common industrial heat-insulating material. Rock wool is typically manufactured into rock wool panels for packaging and sale.

Rock wool and mineral wool are ideal heat-insulating materials for building exterior wall heat insulation and pipeline tank body heat insulation in the industrial field, and raw materials of the rock wool and the mineral wool are natural ore and steelmaking blast furnace slag; the production process generally comprises the following steps of raw material melting (cupola furnace and electric furnace) → centrifugal fiber forming (binder adding) → cotton collecting and felt forming → felt spreading and pleating → pressure curing → cutting → packaging.

For example, patent No. CN201811628924.0 provides a method for producing environmental-friendly rock wool, which comprises the following steps:

s1, collecting raw materials, mixing basalt, blast furnace slag, process waste and coke, and ensuring that the weight percentages of the components are as follows: 50-60% of basalt, 8-20% of blast furnace slag, 8-20% of process waste and 0-12% of coke;

s2, smelting the raw material, namely feeding the mixed material obtained in the step S1 into a cupola furnace to be smelted into magma;

s3 centrifuging to form fiber, throwing the magma into fiber by a centrifuge, and blowing the fiber to a cotton collector;

s4, forming the cotton felt, namely forming the fibers in the step S3 into an initial cotton layer through a cotton collecting machine, and then forming the initial cotton layer into a plurality of layers of folded cotton felts through swinging blanking of a pendulum machine and transportation of a conveyor;

s5, molding the cotton board, namely, making the cotton felt in the step S4 into structural cotton through a pressurizing pleating machine, and then sending the structural cotton into a curing oven for pressurizing and molding to obtain the cotton board;

s6, cutting the cotton board into a specified size;

s7 packaging and shipment out of the warehouse, or off-line processing.

Among the prior art, rock wool production system includes cupola, centrifugal device, collection cotton drum, pendulum cloth cotton device, tucking device, curing oven, cooling device, side cut device, cuts a device, packing plant and pile up neatly device etc. that set gradually along the output direction of rock wool, and the tail gas that the cupola discharged is arranged outward after tail gas processing apparatus handles.

The applicant found two problems when using a cupola:

(1) the dust in the tail gas is more.

(2) The cupola furnace needs to have its gas pressure controlled to ensure good operation.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the embodiment of the utility model provides a cupola furnace for rock wool production, wherein an emergency chimney is arranged to adjust the pressure in the cupola furnace so as to avoid the influence of overlarge pressure on the operation of the cupola furnace; meanwhile, partial dust in the cupola furnace tail gas can be separated, and the treatment pressure of the tail gas treatment device is reduced. The technical scheme is as follows:

the embodiment of the utility model provides a cupola furnace for rock wool production, which comprises a cupola furnace 1, a tail gas treatment device and an emergency chimney 2; the tail gas outlet of the cupola 1 is connected with an emergency chimney 2 through a pipeline with a pressure detection structure, the emergency chimney 2 is connected with a tail gas treatment device through a pipeline with a tail gas fan, a chimney cover 3 capable of sealing the exhaust port of the emergency chimney 2 is arranged on the exhaust port at the top of the emergency chimney 2, and a star-shaped discharger 12 is arranged at the bottom of the emergency chimney 2.

Preferably, the lower part of the emergency chimney 2 in the embodiment of the present invention is made of metal, and the heat exchange jacket 7 is sleeved outside the emergency chimney 2, and a hot air outlet of the heat exchange jacket 7 is connected with a hot air nozzle 6 of the cotton collecting drum 5 through a pipeline with a hot air blower 4.

Specifically, the hot air blow head 6 in the embodiment of the present invention is located below the lower portion of the condenser drum 5 and is disposed toward the condenser drum 5.

Specifically, the emergency chimney 2 in the embodiment of the utility model is sequentially divided into a lower conical pipe section 8, an upper conical pipe section 9 and a straight pipe section 10 from bottom to top, the inner diameter of the lower conical pipe section 8 is gradually increased from bottom to top, the inner diameter of the upper conical pipe section 9 is gradually decreased from bottom to top, the straight pipe section 10 is vertically arranged, the inner diameter of the straight pipe section is the same as the inner diameter of the top of the upper conical pipe section 9, and the cupola 1 and the tail gas treatment device are both connected with the lower conical pipe section 8 through pipelines.

Preferably, the lower conical pipe section 8 in the embodiment of the utility model is connected with the emergency fan 11 through a pipeline.

One side of a chimney cover 3 in the embodiment of the utility model is hinged to the top of an emergency chimney 2 through a rotating shaft, a support 13 is arranged at the top of the emergency chimney 2 and on one side close to the rotating shaft, a guide wheel 14 is arranged at the top end of the support 13, a pull rope pulling mechanism 15 is arranged on the emergency chimney 2 and under the support 13, a pull rope 16 is arranged at the other side of the chimney cover 3, the other end of the pull rope 16 bypasses the upper side of the guide wheel 14 and then is connected with the pull rope pulling mechanism 15 downwards, and the pull rope pulling mechanism 15 can pull the pull rope 16 upwards and downwards.

The technical scheme provided by the embodiment of the utility model has the following beneficial effects: the embodiment of the utility model provides a cupola furnace for rock wool production, which is characterized in that an emergency chimney is arranged to adjust the pressure in the cupola furnace so as to avoid the influence of overlarge pressure on the operation of the cupola furnace; meanwhile, partial dust in the cupola furnace tail gas can be separated, and the treatment pressure of the tail gas treatment device is reduced. Furthermore, the temperature of the tail gas can be reduced through heat exchange, normal use of a tail gas treatment device (such as a bag type dust collector) is guaranteed, and heat obtained through heat exchange can be used for the cotton collecting drum.

Drawings

FIG. 1 is a schematic view of a portion of a cupola furnace for rock wool production according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an emergency chimney.

In the figure: 1 cupola, 2 emergency chimneys, 3 chimney covers, 4 hot air fans, 5 cotton collecting drums, 6 hot air nozzles, 7 heat exchange jackets, 8 lower conical pipe sections, 9 upper conical pipe sections, 10 straight pipe sections, 11 emergency fans, 12 star-shaped dischargers, 13 supports, 14 guide wheels, 15 pull rope pulling mechanisms and 16 pull ropes.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1-2, an embodiment of the utility model provides a cupola furnace for rock wool production, which comprises a cupola furnace 1, a tail gas treatment device (for tail gas treatment, including a heat exchanger, an incinerator, a desulfurizing tower, a bag-type dust collector and the like), an emergency chimney 2 and the like. The tail gas outlet of the cupola 1 is connected with an emergency chimney 2 through a pipeline with a pressure detection structure (a pressure gauge or a pressure sensor and the like), the emergency chimney 2 is connected with a tail gas treatment device through a pipeline with a tail gas fan, a chimney cover 3 capable of sealing the exhaust port of the emergency chimney 2 is arranged on the exhaust port (normally sealed) at the top of the emergency chimney, and a star-shaped discharger 12 is arranged at the bottom of the emergency chimney 2 (the bottom end of a lower cone pipe section 8) to output separated dust at regular time. When the pressure detection structure detects that the pressure in the cupola 1 is greater than a certain threshold value, the chimney cover 3 is opened manually or automatically (correspondingly, an automatic opening mechanism is arranged between the emergency chimney 2 and the chimney cover 3 and can be linked with the pressure sensor).

Preferably, referring to fig. 1-2, in the embodiment of the present invention, the lower portion of the emergency chimney 2 (specifically, the lower conical pipe section 8 and the upper conical pipe section 9) is made of metal, and the heat exchange jacket 7 is sleeved outside the lower portion, and a hot air outlet of the heat exchange jacket 7 is connected to a hot air nozzle 6 of the cotton collecting drum 5 through a pipeline with a hot air blower 4 to blow the cleaned cotton collecting drum 5. Of course, the emergency chimney 2 can also be made of metal.

Specifically, referring to fig. 1, the hot air blow head 6 in the embodiment of the present invention is located below the lower portion of the condenser drum 5 and is disposed toward the condenser drum 5.

Specifically, referring to fig. 1-2, the emergency chimney 2 in the embodiment of the present invention is sequentially divided into a lower conical pipe section 8, an upper conical pipe section 9, and a straight pipe section 10 from bottom to top, wherein the inner diameter of the lower conical pipe section 8 is gradually increased from bottom to top, the inner diameter of the upper conical pipe section 9 is gradually decreased from bottom to top, the straight pipe section 10 is vertically disposed, and the inner diameter of the straight pipe section is the same as the inner diameter of the top of the upper conical pipe section 9, and the cupola 1 and the tail gas treatment device are both connected to the lower conical pipe section 8 through a pipeline. The taper pipe is not only convenient for the separation and the discharge of dust, but also increases the area of heat exchange between the taper pipe and the heat exchange jacket 7.

Preferably, referring to fig. 1, the lower conical pipe section 8 in the embodiment of the present invention is connected with an emergency fan 11 through a pipeline (a valve may also be arranged thereon); the emergency fan 11 is not operated normally, and when the chimney cover 3 is opened and the pressure in the cupola 1 cannot be reduced, the emergency fan 11 exhausts air to reduce the pressure.

Referring to fig. 1-2, in the embodiment of the present invention, one side of a chimney cover 3 is hinged to the top of an emergency chimney 2 through a rotating shaft, a support 13 (vertical arrangement) is disposed at the top of the emergency chimney 2 and at a side close to the rotating shaft, a guide wheel 14 (perpendicular to a pull rope 16) is disposed at the top end of the support 13, a pull rope pulling mechanism 15 (specifically, an electric pulling structure, such as a winch or the like) is disposed on the emergency chimney 2 (specifically, a straight pipe section 10) and right below the support 13, a pull rope 16 is disposed at the top of the other side of the chimney cover 3, the other end of the pull rope 16 bypasses the upper side of the guide wheel 14 and then is connected to the pull rope pulling mechanism 15, and the pull rope pulling mechanism 15 can pull the pull rope 16 up and down. When the pull rope 16 is pulled downwards by the pull rope pulling mechanism 15, the chimney cover 3 is opened; when the pulling rope 16 is pulled by releasing the pulling rope pulling mechanism 15 upwards, the chimney cover 3 moves downwards due to the self weight to close the exhaust port of the emergency chimney 2.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A cupola furnace for rock wool production comprises a cupola furnace (1) and a tail gas treatment device; the device is characterized by further comprising an emergency chimney (2), wherein a tail gas outlet of the cupola furnace (1) is connected with the emergency chimney (2) through a pipeline with a pressure detection structure, the emergency chimney (2) is connected with a tail gas treatment device through a pipeline with a tail gas fan, a chimney cover (3) capable of sealing an exhaust port of the emergency chimney (2) is arranged on the exhaust port at the top of the emergency chimney, and a star-shaped discharger (12) is arranged at the bottom of the emergency chimney (2).

2. The cupola furnace for rock wool production according to claim 1, wherein the lower part of the emergency chimney (2) is made of metal and is externally sleeved with a heat exchange jacket (7), and a hot air outlet of the heat exchange jacket (7) is connected with a hot air nozzle (6) of the cotton collecting drum (5) through a pipeline with a hot air fan (4).

3. A cupola furnace for production of rock wool according to claim 2, wherein the hot blast jets (6) are located below the lower part of the collector drum (5) and are arranged towards the collector drum (5).

4. The cupola furnace for rock wool production according to claim 2, wherein the emergency chimney (2) is sequentially divided into a lower conical pipe section (8), an upper conical pipe section (9) and a straight pipe section (10) from bottom to top, the inner diameter of the lower conical pipe section (8) is gradually increased from bottom to top, the inner diameter of the upper conical pipe section (9) is gradually decreased from bottom to top, the straight pipe section (10) is vertically arranged and has the same inner diameter as the inner diameter of the top of the upper conical pipe section (9), and the cupola furnace (1) and the tail gas treatment device are both connected with the lower conical pipe section (8) through a pipeline.

5. The cupola furnace for rock wool production according to claim 4, wherein the lower cone section (8) is connected to an emergency fan (11) via a pipeline.

6. The cupola furnace for rock wool production according to claim 1, wherein one side of the chimney cover (3) is hinged to the top of the emergency chimney (2) through a rotating shaft, a support (13) is arranged on one side of the top of the emergency chimney (2) close to the rotating shaft, a guide wheel (14) is arranged at the top end of the support (13), a pull rope pulling mechanism (15) is arranged on the emergency chimney (2) and under the support (13), a pull rope (16) is arranged on the other side of the chimney cover (3), the other end of the pull rope (16) bypasses the upper side of the guide wheel (14) and then is downwards connected with the pull rope pulling mechanism (15), and the pull rope pulling mechanism (15) can pull the pull rope (16) up and down.