CN216361520U

CN216361520U - Energy-saving and environment-friendly melting and separating furnace

Info

Publication number: CN216361520U
Application number: CN202121577240.XU
Authority: CN
Inventors: 郭树玉
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-08
Filing date: 2021-07-08
Publication date: 2022-04-22
Anticipated expiration: 2031-07-08

Abstract

The utility model relates to an energy-saving and environment-friendly melting and separating furnace, wherein a feeding cylinder and a smoke exhaust cylinder are connected to the outside of a furnace mouth of the melting and separating furnace, the smoke exhaust cylinder is sleeved outside the feeding cylinder, one end of the smoke exhaust cylinder is connected with the furnace mouth through a first sealing shaft sleeve, the other end of the smoke exhaust cylinder is connected with a smoke exhaust cavity through a second sealing shaft sleeve, the top of the smoke exhaust cavity is provided with the smoke exhaust cylinder, one end of the feeding cylinder extends into the furnace body, the other end of the feeding cylinder is connected with a packing cavity through a sealing bearing, the top of the packing cavity is provided with a packing hopper, and a rotary driving assembly is arranged outside the smoke exhaust cylinder. The energy-saving and environment-friendly melting furnace disclosed by the utility model has the advantages that the feeding and the smoke discharging are separated, the furnace burden in the feeding cylinder can be fully preheated, the heating is uniform, the furnace burden can be continuously supplied, and the energy is saved and the environment is protected.

Description

Energy-saving and environment-friendly melting and separating furnace

Technical Field

The utility model belongs to the field of metallurgical devices, relates to a melting furnace, and particularly relates to an energy-saving and environment-friendly melting furnace.

Background

In the prior art, most melting furnaces continuously supply furnace materials by adopting a feeding screw, and in order to ensure that fuel can be fully combusted, the furnace body structure, an air supply port and air supply quantity are improved. The smoke vent is directly connected with the furnace body, and the heat of the discharged smoke can only be used for heating or heating external materials, but not for pretreating furnace charges, thereby promoting the combustion and decomposition of fuels and heating reduced iron materials.

The rotary kiln feeds and discharges smoke by rotating the feeding barrel, furnace burden is directly contacted with the smoke, and fuel in the furnace burden is heated by the smoke and is easy to coke and form rings, so that coking and carbon hanging in the barrel are caused. The oxygen in the flue gas can oxidize iron in the furnace burden. And the discharged flue gas and the furnace burden move reversely, the discharged flue gas has certain wind power, and the discharged flue gas blocks the forward movement of the material, so that the furnace burden is not suitable for supplying powder furnace burden.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and provides an energy-saving and environment-friendly melting furnace which can fully utilize waste heat to preheat furnace charge, promote fuel decomposition, ensure full combustion of the furnace charge and heating before melting reduced iron.

In order to solve the problems, the technical scheme adopted by the utility model is as follows:

energy-conservation, the environment-friendly melts and divides stove, a serial communication port, the furnace mouth external connection feeding section of thick bamboo and the chimney of melting and dividing the stove, the chimney sleeve is outside at the feeding section of thick bamboo, feeding section of thick bamboo and chimney slope set up, the chimney passes through the link with the feeding section of thick bamboo and is connected, chimney one end passes through first sealed axle sleeve with the furnace mouth and is connected, the chimney other end passes through second sealed axle sleeve with the chamber of discharging fume and is connected, the chamber top of discharging fume is equipped with the chimney, feeding section of thick bamboo one end stretches into in the furnace body, the feeding section of thick bamboo other end passes through sealed bearing with the chamber of packing and is connected, the inside defeated material screw rod that is equipped with of packing chamber, the chamber top of packing is equipped with the hopper of packing, the chimney outside is equipped with rotary driving subassembly.

Furthermore, the outer part of the feeding cylinder close to the furnace mouth is provided with blades, one end of each blade is fixed on the outer wall of the feeding cylinder, and the blades are obliquely arranged along the radial end face of the smoke exhaust cylinder.

Furthermore, the first sealing shaft sleeve and the second sealing shaft sleeve are embedded with graphite shaft sleeves.

Furthermore, fluid slip rings are arranged on the side portions of the first sealing shaft sleeve and the second sealing shaft sleeve respectively, each fluid slip ring is provided with a cooling cavity, and the cooling cavities are connected with cooling water pipes.

Furthermore, the rotary driving assembly comprises an outer gear ring, a chain and a driving gear, the outer gear ring is arranged outside the smoke exhaust cylinder, the outer gear ring is radially arranged along the smoke exhaust cylinder, the driving gear is driven by the motor, and the chain is connected with the outer gear ring and the driving gear.

Furthermore, a positioning ring is arranged outside the smoke exhaust cylinder, the positioning ring is arranged along the radial direction of the smoke exhaust cylinder, carrier rollers are arranged at the bottom of the smoke exhaust cylinder, two groups of carrier rollers are arranged oppositely, and two carrier rollers of each group of carrier rollers are arranged on two sides of the positioning ring.

Furthermore, the middle part of the connecting frame is provided with a thermal expansion buffer section.

Furthermore, the thermal expansion buffer section is formed by spirally winding a steel wire.

The utility model has the beneficial effects that:

(1) according to the utility model, the rotary driving component can drive the feeding cylinder and the smoke exhaust cylinder to rotate together, the feeding cylinder supplies furnace materials into the furnace body in the rotating process of the feeding cylinder, and the furnace material supplying speed depends on the rotating speed of the feeding cylinder.

(2) According to the utility model, in the conveying process of the furnace burden, the flue gas in the smoke exhaust channel heats the furnace burden in the feeding cylinder, the furnace burden is preheated, the fuel in the furnace burden is heated and decomposed, the fuel entering the furnace can be fully combusted, and the external discharge of nitrogen, sulfur and carbon monoxide in the flue gas is reduced.

(3) According to the utility model, feeding and smoke discharging are separated, so that the furnace burden in the feeding cylinder can be fully preheated and uniformly heated, the direct contact between the smoke and the furnace burden is avoided, the furnace burden is prevented from forming rings, reduced iron in the furnace burden is oxidized by the smoke, and the furnace burden is suitable for supplying powder furnace burden.

(4) Compared with the prior art, the energy-saving and environment-friendly melting furnace can continuously supply powder furnace burden, the flue gas is discharged and separated from the feeding, the feeding can be continued, the heating is uniform, the furnace burden is prevented from forming rings, and the energy-saving and environment-friendly melting furnace is energy-saving and environment-friendly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a structural diagram of an environment-friendly alloy refining sealing furnace according to the present invention;

FIG. 2 is a front view of the feed cylinder of the present invention;

FIG. 3 is a right side view of the feed cylinder of the present invention;

FIG. 4 is a top view of the positioning assembly of the present invention;

reference numerals: the device comprises a melting furnace-1, a furnace mouth-11, a feeding cylinder-2, a connecting frame-21, a thermal expansion buffer section-211, blades-22, a smoke exhaust cylinder-3, a first sealing shaft sleeve-31, a smoke exhaust cavity-32, a second sealing shaft sleeve-33, a smoke exhaust cylinder-34, a fluid slip ring-35, a positioning ring-36, a filling cavity-41, a sealing bearing-42, a filling hopper-43, a material conveying screw-44, an outer gear ring-51, a chain-52, a driving gear-53, a positioning component-6 and a carrier roller-61.

Detailed Description

The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more readily understand the advantages and features of the present invention and to clearly and unequivocally define the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the present invention. Furthermore, in the description of the present invention, moreover, "first", "second", "third", and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be further noted that, unless otherwise specifically stated or limited, the terms "disposed," "mounted," "connected," and "connected" are used broadly and can be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, or connected through an intermediate medium, and can be used to connect two elements. It will be understood by those of ordinary skill in the art that the above terms in the present invention have the meaning of "a plurality" of two or more in each particular case unless specifically defined otherwise.

In the following specific embodiment, the material of the feeding cylinder 2, the smoke exhaust cylinder 3, the smoke exhaust cavity 32, the filling cavity 41 and the filling hopper 43 is carbon steel, and the inner and outer surfaces of the carbon steel are coated with high-temperature resistant anticorrosive paint. The first sealing shaft sleeve 31 and the second sealing shaft sleeve 33 are embedded graphite shaft sleeves, the graphite shaft sleeves are carbon steel surfaces coated with graphite layers, the graphite layers have high temperature resistance and wear resistance effects, gaps between the shaft sleeves are filled with temperature-resistant lubricating oil, and the graphite layers ensure that the lubricating oil is not melted and leaks.

Referring to the attached figure 1 of the specification, an energy-saving and environment-friendly melting furnace 1 is externally connected with a feeding cylinder 2 and a smoke exhaust cylinder 3 at a furnace mouth 11. The smoke exhaust cylinder 3 is sleeved outside the feeding cylinder 2, the feeding cylinder 2 and the smoke exhaust cylinder 3 are arranged in an inclined mode, and the inclination of the feeding cylinder 2 and the inclination of the smoke exhaust cylinder 3 are 3-3.5%. The feeding cylinder 2 is used for conveying furnace burden to the interior of the furnace body, a smoke exhaust channel is formed in a gap between the smoke exhaust cylinder 3 and the feeding cylinder 2, and the smoke exhaust channel is used for discharging smoke outwards. Referring to the attached

drawings

2 and 3 in the specification, the smoke exhaust cylinder 3 is connected with the feeding cylinder 2 through a connecting frame 21, the connecting frame 21 is arranged along the radial direction of the smoke exhaust cylinder 3, one end of the connecting frame 21 is welded with the outer wall of the feeding cylinder 2, the other end of the connecting frame 21 is welded with the inner wall of the smoke exhaust cylinder 3, and the smoke exhaust cylinder 3 and the feeding cylinder 2 are connected into a whole through the connecting frame 21. Under the rotary driving of the smoke exhaust cylinder 3, the smoke exhaust cylinder 3 and the feeding cylinder 2 rotate together, and in the rotating process of the feeding cylinder 2, furnace burden enters the furnace body along with the inclination of the feeding cylinder. Referring to the attached figure 1 of the specification, one end of the smoke exhaust tube 3 is connected with the furnace mouth 11 through a first sealing shaft sleeve 31, the other end of the smoke exhaust tube 3 is connected with a smoke exhaust cavity 32 through a second sealing shaft sleeve 33, and a smoke exhaust tube 34 is arranged at the top of the smoke exhaust cavity 32. The smoke exhaust cavity 32 is fixedly arranged on the fixed frame, the smoke exhaust cavity 32 and the smoke exhaust tube 34 are fixed, and the smoke exhaust tube 3 independently rotates relative to the smoke exhaust cavity 32 and the furnace mouth 11. One end of the feeding cylinder 2 extends into the furnace mouth 11, and when the feeding cylinder 2 rotates along with the smoke exhaust cylinder 3, furnace burden moves forwards along with the inclination of the feeding cylinder 2 and continuously feeds to the furnace body. Referring to the attached drawing 1 in the specification, the other end of the feeding cylinder 2 is connected with the packing cavity 41 through a sealing bearing 42, the sealing bearing 42 is fixed on the left side wall of the smoke exhaust cavity 32, and the sealing bearing 42 plays a role in supporting, lifting and fixing the feeding cylinder 2. A material conveying screw 44 is arranged in the packing cavity 41, a packing hopper 43 is arranged at the top of the packing cavity 41, furnace burden is conveyed into the feeding barrel 3 through the material conveying screw 44, and the material conveying screw 44 is beneficial to conveying at a constant speed. The top of the packing hopper 43 is provided with a cover body, and when the material does not need to be fed, the cover body is covered by the packing hopper 43, so that the smoke leakage of the packing hopper is avoided. Referring to the attached figure 1 of the specification, a rotary driving assembly is arranged outside the smoke exhaust tube 3 and is used for driving the smoke exhaust tube 3 to rotate.

For the embodiment, the processes of conveying, heating and decomposing the furnace burden inside the feeding cylinder are as follows: the furnace burden rises together with the feeding cylinder as a whole under the action of friction force, and when the furnace burden rotates to a certain height, namely an angle formed by the surface of the furnace burden layer and a horizontal plane is equal to a stacking angle of the furnace burden, furnace burden particles slide down along the furnace burden layer under the action of gravity. The charging barrel has a certain inclination, and when the charging material particles roll, the charging material particles descend along the maximum direction of the inclination, so that the charging material particles move forwards for a certain distance. When the charge material moves in the charging barrel, the movement mode of charge material particles is changed periodically, and the charge material particles are either buried in the material layer and move upwards together with the charging barrel wall or fall down on the surface of the material layer. But only during the descent of the charge material particles along the surface layer can they move forward in the axial direction of the feeder. When the furnace burden is lifted and dropped, the furnace burden is heated by the hot gas, and the furnace burden is fully preheated and decomposed.

In order to avoid the flue gas from entering the feeding cylinder, the structure of the energy-saving and environment-friendly melting and separating furnace is improved, referring to the attached

drawings

2 and 3 in the specification, blades 22 are arranged outside the feeding cylinder 2 close to the furnace mouth 11, one end of each blade 22 is fixed on the outer wall of the feeding cylinder 2, and the blades 22 are obliquely arranged along the radial end face of the smoke exhaust cylinder. In the rotating process of the feeding cylinder 2, the blades drive the air pressure in the smoke exhaust channel to be reduced, and the smoke enters the smoke exhaust channel, so that the smoke entering the feeding cylinder is reduced.

In order to ensure that the smoke exhaust tube does not leak smoke in the rotating process, the first sealing shaft sleeve 31 and the second sealing shaft sleeve 33 adopt embedded graphite shaft sleeves. The main body of the device is of a carbon steel structure, solid lubricating oil is coated at the butt joint of the shaft sleeves, the solid lubricating oil has a lubricating effect on the rotation of the first sealing shaft sleeve 31 and the second sealing shaft sleeve 33, and meanwhile, the device has a sealing effect and avoids the leakage of smoke. The surface of the butt joint of the shaft sleeve is covered with a graphite layer, and the graphite is high-temperature resistant and wear resistant, so that the lubricating oil is not melted.

In order to further cool the first sealing shaft sleeve 31 and the second sealing shaft sleeve 33 and avoid melting of the solid lubricant, referring to fig. 1 in the specification, the fluid slip ring 35 is respectively disposed on the side portions of the first sealing shaft sleeve 31 and the second sealing shaft sleeve 33, the fluid slip ring 35 is provided with a cooling cavity, and the cooling cavity is connected to the cooling water pipe. The cooling water flows into the cooling cavity, so that the first sealing shaft sleeve 31 and the second sealing shaft sleeve 33 are cooled, and the solid lubricating oil can be further prevented from being melted due to the fact that the main bodies of the first sealing shaft sleeve 31 and the second sealing shaft sleeve 33 are carbon steel.

In order to enable the smoke exhaust tube to rotate stably, the structure of the top-most embodiment is improved. Referring to the description and the attached drawing 1, the rotary driving assembly includes an outer gear ring 51, a chain 52 and a driving gear 53, the outer gear ring 51 is arranged outside the exhaust pipe 3, the outer gear ring 51 is arranged along the radial direction of the exhaust pipe 3, the driving gear 53 is driven by a motor, and the chain 52 is connected with the outer gear ring 51 and the driving gear 53. The driving gear drives the outer gear ring to rotate through the chain, the outer gear ring drives the whole smoke exhaust cylinder to rotate, and the outer gear ring is located in the middle of the smoke exhaust cylinder and radially arranged on the smoke exhaust cylinder, so that the whole smoke exhaust cylinder is stable in rotation.

In order to enable the whole smoke exhaust tube to be in a stable state in the rotating process, the structure of the specific embodiment is further improved, referring to the attached drawing 1 in the specification, a positioning ring 36 is arranged outside the smoke exhaust tube 3, the positioning ring 36 is arranged along the radial direction of the smoke exhaust tube 3, and a positioning assembly 6 is arranged at the bottom of the smoke exhaust tube 3. referring to the attached drawing 4 in the specification, the positioning assembly 6 comprises two groups of carrier rollers 61, the two groups of carrier rollers 61 are arranged oppositely, the two groups of carrier rollers 61 are arranged at two axial sides of the smoke exhaust tube, and the two groups of carrier rollers 61 play roles in radial centering, supporting and lifting on the smoke exhaust tube. Two carrier rollers of each group of carrier rollers are arranged at two sides of the positioning ring 36, and the carrier rollers positioned at two sides of the positioning ring play a role in axially positioning the smoke exhaust tube.

Because the flue gas in the chimney has certain temperature, the link will produce the expansion deformation, in order to eliminate the link expansion influence, refer to the description and show in figure 2, link 21 middle part is equipped with thermal expansion buffer section 211, thermal expansion buffer section 211 is that the steel wire is the heliciform winding.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, that the preferred embodiments of the present invention are described above and the present invention is not limited to the preferred embodiments, and that various changes and modifications may be made without departing from the spirit and scope of the present invention and these changes and modifications are within the scope of the utility model as claimed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Energy-conservation, the environment-friendly melts and divides stove, a serial communication port, the furnace mouth external connection feeding section of thick bamboo and the chimney of melting and dividing the stove, the chimney sleeve is outside at the feeding section of thick bamboo, feeding section of thick bamboo and chimney slope set up, the chimney passes through the link with the feeding section of thick bamboo and is connected, chimney one end passes through first sealed axle sleeve with the furnace mouth and is connected, the chimney other end passes through second sealed axle sleeve with the chamber of discharging fume and is connected, the chamber top of discharging fume is equipped with the chimney, feeding section of thick bamboo one end stretches into in the furnace body, the feeding section of thick bamboo other end passes through sealed bearing with the chamber of packing and is connected, the inside defeated material screw rod that is equipped with of packing chamber, the chamber top of packing is equipped with the hopper of packing, the chimney outside is equipped with rotary driving subassembly.

2. The energy-saving and environment-friendly melting furnace as claimed in claim 1, wherein blades are arranged outside the feeding barrel near the furnace mouth, one end of each blade is fixed on the outer wall of the feeding barrel, and the blades are obliquely arranged along the radial end face of the smoke exhaust barrel.

3. The energy-saving and environment-friendly melting furnace as claimed in claim 1, wherein the first sealing shaft sleeve and the second sealing shaft sleeve are embedded graphite shaft sleeves.

4. The energy-saving and environment-friendly melting furnace as claimed in claim 1, wherein the first sealing shaft sleeve and the second sealing shaft sleeve are respectively provided with a fluid slip ring at the side part, the fluid slip ring is provided with a cooling cavity, and the cooling cavity is connected with a cooling water pipe.

5. The energy-saving and environment-friendly melting furnace as claimed in claim 1, wherein the rotary driving assembly comprises an outer gear ring, a chain and a driving gear, the outer gear ring is arranged outside the smoke exhaust pipe, the outer gear ring is arranged along the radial direction of the smoke exhaust pipe, the driving gear is driven by a motor, and the chain is connected with the outer gear ring and the driving gear.

6. The energy-saving and environment-friendly melting furnace as claimed in claim 5, wherein a positioning ring is arranged outside the smoke exhaust tube, the positioning ring is arranged along the radial direction of the smoke exhaust tube, the bottom of the smoke exhaust tube is provided with carrier rollers, two sets of carrier rollers are oppositely arranged, and two carrier rollers of each set of carrier rollers are arranged on two sides of the positioning ring.

7. The energy-saving and environment-friendly melting furnace as claimed in claim 1, wherein a thermal expansion buffering section is arranged in the middle of the connecting frame.

8. The energy-saving and environment-friendly melting furnace as claimed in claim 7, wherein the thermal expansion buffering section is formed by spirally winding steel wires.