CN216677955U

CN216677955U - Large-scale continuous type blendor

Info

Publication number: CN216677955U
Application number: CN202220322741.1U
Authority: CN
Inventors: 谢美良; 伍政华
Original assignee: Xiangtan Weida Electrical And Machinery Manufacture Co ltd
Current assignee: Xiangtan Weida Electrical And Machinery Manufacture Co ltd
Priority date: 2022-02-17
Filing date: 2022-02-17
Publication date: 2022-06-07
Anticipated expiration: 2032-02-17

Abstract

The utility model discloses a large continuous mixer which comprises a roller, a stirring rotor, a supporting roller device, a discharging machine tail, a feeding machine head, a stirring rotor driving device, a roller driving device and a frame, wherein the roller is obliquely arranged on the supporting roller device, the feeding machine head and the discharging machine tail are respectively connected with two ends of the roller in a rotating matching way through a dynamic sealing mechanism, the stirring rotor comprises a rotating shaft, mixing blades and pushing spiral blades, the rotating shaft is offset in the roller, a plurality of groups of mixing blades are arranged on the rotating shaft at intervals, the pushing spiral blades are arranged at one end of the rotating shaft close to the discharging machine tail, the rotating direction of the rotating shaft is opposite to that of the roller, and the rotating speed of the rotating shaft is greater than that of the roller. The large continuous mixer provided by the utility model can repeatedly disperse and blend materials in the mixing and propelling processes, the materials can be uniformly and consistently mixed in a short time, the raw materials are propelled while being mixed, so that the mixing, continuous feeding and continuous discharging of the raw materials are realized, and the production efficiency and the productivity are improved.

Description

Large-scale continuous type blendor

Technical Field

The utility model relates to the technical field of raw material mixing equipment, in particular to a large continuous mixer suitable for mixing iron ores.

Background

The main raw materials for iron making are iron ore, coke, limestone and the like. The iron ore includes hematite, magnetite, etc. Before smelting, the ore is selected to remove other impurities and improve the grade of iron ore, then the ore is crushed and ground, a plurality of iron ore raw materials with different sizes and granularities are mixed by a mixer, particles with different shapes are produced by a granulating and agglomerating machine, and the produced granular iron ore raw materials are put into a sintering furnace to be sintered into iron-making raw materials. The traditional granulation and agglomeration method mainly comprises the following steps: the sintering method comprises the following steps: mixing the secondary mineral powder and the concentrate powder, heating at high temperature, and sintering under the condition of incomplete melting to form blocks; a pelletizing method: mixing fine ore powder, adding water to wet and roll the mixture on pelletizing equipment to form green pellets, and roasting and solidifying the green pellets; a briquetting method: pressing the mixed powder material in a mold to form a lump with certain shape and size. These several agglomeration methods have certain drawbacks: high energy consumption, high carbon emission, low production efficiency, high product porosity and the like.

Chinese patent publication No. 113862469a discloses a single-shaft vacuum strong blast furnace hematite extruder, which greatly improves productivity by replacing the conventional granulation method with an extrusion method. When the extruder is used for basic granulation, a plurality of iron ore raw materials are firstly blended and then uniformly mixed by a mixer and then sent into the extruder, but the traditional iron ore mixer is not provided with a rotor, so that the stirring is not uniform, and especially the mixing of the wet micropowder and water cannot meet the technical requirement of granulation by an extrusion method. Meanwhile, the single machine capacity of the traditional iron ore mixer is small, and the capacity requirement of granulation by an extrusion method is not met.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model provides a large continuous mixer which can realize uniform and consistent mixing of materials in a short time, realize continuous feeding and continuous discharging in the material mixing process and improve the mixing capacity.

The technical scheme adopted by the utility model is as follows: a large continuous mixer comprises a roller, a stirring and pushing rotor, a supporting and blocking roller device, a discharging machine tail, a feeding machine head, a stirring and pushing rotor driving device, a roller driving device and a rack;

the supporting and blocking roller device is fixedly arranged on the rack, and the roller is obliquely arranged on the supporting and blocking roller device;

the roller driving device is used for driving the roller to rotate;

the feeding machine head comprises a roller sealing cover, a feeding barrel connected with the roller sealing cover and a feeding barrel shaft end sealing cover connected with the feeding barrel, the discharging machine tail comprises a roller sealing cover, an oblique conical barrel connected with the roller sealing cover, an oblique conical barrel shaft end sealing cover connected with the oblique conical barrel and a discharging barrel connected with the oblique conical barrel, and the roller sealing covers are respectively connected with two ends of the roller in a rotating fit mode through a dynamic sealing mechanism;

the stirring and pushing rotor comprises a rotating shaft, mixing blades and a pushing spiral blade, the rotating shaft penetrates through the feeding machine head, the roller and the discharging machine tail, the rotating shaft is offset in the roller, a plurality of groups of mixing blades are installed on the rotating shaft at intervals, and the pushing spiral blade is installed at one end of the rotating shaft close to the discharging machine tail;

the stirring rotor driving device is used for driving the rotating shaft to rotate, the rotating direction of the rotating shaft is opposite to that of the roller, and the rotating speed of the rotating shaft is greater than that of the roller.

Furthermore, the oblique angle of the roller is 5-12 degrees.

Further, the outer wall of the roller is welded with a bearing rolling ring, the roller is matched with the supporting and blocking roller device through the bearing rolling ring, the supporting and blocking roller device comprises two groups of supporting wheel assemblies and a group of blocking wheel assemblies, the two groups of supporting wheel assemblies are respectively arranged on two sides of the bearing rolling ring and used for vertically supporting the roller, and the blocking wheel assemblies are arranged on one side of the bearing rolling ring and used for laterally supporting the roller.

Further, the dynamic sealing mechanism comprises conical surface dynamic rings which are fixedly arranged at two ends of the roller through angle steel rings respectively, the roller sealing cover comprises an end plate, a labyrinth sealing static conical ring, a conical surface static ring, a carbon silicon aluminum composite sealing plate, an elastic sheet, a sleeving cylinder and a nylon ring, the outer diameter of the end plate is larger than the caliber of the roller, the sleeving cylinder is fixedly connected with the end plate and sleeved at the port of the roller, the nylon ring is lined at the contact surface of the sleeving cylinder and the roller, the conical surface static ring is fixed at the outer edge of the end plate and inclines to one side close to the roller, the inclination angles of the conical surface dynamic ring and the conical surface static ring are consistent, the labyrinth sealing static conical ring is arranged between the sleeving cylinder and the conical surface static ring, a plurality of carbon silicon aluminum composite sealing plates and the elastic sheet are fixed on the conical surface static ring through screws, and a plurality of carbon silicon aluminum composite sealing plates are sequentially spliced through joint ports, the elastic sheet presses the carbon-silicon-aluminum composite sealing plate and tightly adheres to the conical surface static ring and the conical surface moving ring.

Furthermore, an ash leakage opening is formed in the end plate between the labyrinth seal static cone ring and the sleeve cylinder and below the roller seal cover, and an ash collecting cylinder is in butt joint with the ash leakage opening.

Furthermore, the mixing paddle and the rotating shaft are detachably mounted, and the deflection angle of the mixing paddle is adjustable.

Further, still install feeding spiral leaf and reverse-push spiral leaf in the pivot, feeding spiral leaf sets up at feeding section of thick bamboo front end, reverse-push spiral leaf sets up the end at oblique circular cone section of thick bamboo, and the spiral direction of reverse-push spiral leaf is opposite with pushing away material spiral leaf spiral direction.

Furthermore, the peripheries of the helical blades of the pushing helical blade, the feeding helical blade and the reverse pushing helical blade are embedded with high wear-resistant alloy.

Furthermore, the inner wall of the roller is pasted with high-abrasion-resistant ceramic tiles.

Furthermore, manholes are respectively formed in two ends of the roller, and the manholes are sealed through openable manhole covers.

The utility model has the beneficial effects that:

(1) the large continuous mixer provided by the utility model has the advantages that the stirring rotor is arranged in the roller in an offset manner (namely the rotor is not concentric with the roller), the stirring rotor rotates at a medium speed, the roller rotates at a low speed in the opposite direction, materials are continuously fed into the roller from the machine head, the roller and the stirring rotor rotate oppositely to each other, various raw materials are continuously thrown to enable the materials to be in a suspended state, the materials generate countercurrent motion, the materials are repeatedly dispersed and blended in the mixing and propelling processes by means of the interaction of the roller and the rotor, the materials can be uniformly mixed in a short time, and the required mixing degree can be achieved within 200 and 300 seconds. Meanwhile, the raw materials are continuously pushed forwards through the mixing blades on the stirring rotor, the pushing spiral blades and the oblique position of the roller, and the raw materials are continuously discharged from the tail of the discharging machine while being mixed, so that the raw materials are mixed and continuously fed and discharged, the mode of stopping the machine for charging and discharging the materials of the traditional mixer is changed, the production efficiency and the productivity are greatly improved, and a plurality of traditional mixers can be replaced under the condition of the same mixing productivity.

(2) The tail end of the stirring and pushing rotor is provided with the reverse spiral blade, the mixing blade and the pushing spiral blade have the functions of stirring and pushing materials, and the reverse spiral blade can prevent the materials from entering a gap between the tail of the discharging machine and the rotating shaft.

(3) High-wear-resistance ceramic chips are adhered to the inner wall of the roller, and high-wear-resistance alloy is embedded on the periphery of the helical blade, so that the service life of the roller and the helix can be prolonged.

(4) The manhole has been seted up at the feed cylinder both ends to the cylinder, easy to assemble and maintenance.

(5) The machine head and the machine tail are provided with a labyrinth and a dynamic and static combined seal of the surface mount type carbon-silicon-aluminum composite sealing plate, so that dust is prevented from escaping into the air, and the surface mount type carbon-silicon-aluminum composite sealing plate is easy to replace.

(6) The lower end of the roller sealing cover is provided with a dust collecting cylinder which can collect a small amount of escaping dust.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic cross-sectional view of fig. 1.

Fig. 3 is a partial structure schematic diagram of a roller sealing cover of a feeding head.

Fig. 4 is a partial structure schematic diagram of the sealing cover of the tail roller of the discharging machine.

Fig. 5 is a schematic structural view of a drum sealing cover of a feeding head.

Detailed Description

In order to facilitate an understanding of the utility model, the utility model will be described more fully and in detail below with reference to the accompanying drawings and preferred embodiments, but the scope of the utility model is not limited to the specific embodiments below.

As shown in fig. 1, the large continuous mixer of this embodiment includes a drum 1, a stirring and pushing rotor 2, a supporting and blocking drum device 3, a discharging machine tail 4, a feeding machine head 5, a stirring and pushing rotor driving device 6, a drum driving device 7, and a frame 8. The outer wall of the roller 1 is welded with a bearing rolling ring 101, the roller 1 is obliquely arranged on a supporting and blocking roller device 3 fixedly arranged on the rack 8 through the bearing rolling ring 101, and the oblique angle of the roller 1 is 5-12 degrees. The supporting roller device 3 comprises two groups of supporting roller components and a group of blocking roller components, the two groups of supporting roller components are respectively arranged on two sides of the bearing rolling ring 101 and used for vertically supporting the roller 1, and the blocking roller components are arranged on one side of the bearing rolling ring 101 and used for laterally supporting the roller 1. Two ends of the roller 1 are respectively provided with a manhole, and the manhole is sealed by an openable manhole cover 102. In order to improve the wear resistance of the roller 1, the inner wall of the roller is adhered with high-wear-resistance tiles.

The roller driving device 7 comprises a large gear welded in the middle of the roller 1 and a driving motor fixedly installed on the rack 8, and the output end of the driving motor is meshed with the large gear on the roller 1 through a gear so as to drive the roller 1 to rotate.

The feeding machine head 5 comprises a roller sealing cover, a feeding barrel connected with the roller sealing cover and a feeding barrel shaft end sealing cover connected with the feeding barrel, the discharging machine tail 4 comprises a roller sealing cover, an oblique cone barrel connected with the roller sealing cover, an oblique cone barrel shaft end sealing cover connected with the oblique cone barrel and a discharging barrel connected with the oblique cone barrel, and the roller sealing covers are respectively connected with two ends of the roller 1 in a rotating fit mode through a dynamic sealing mechanism.

As shown in fig. 1 and fig. 2, the stirring and pushing rotor 2 of the present embodiment includes a rotating shaft 201, a material mixing blade 202, a material pushing spiral blade 203, a feeding spiral blade 204, and a reverse spiral blade 205, wherein the rotating shaft 201 penetrates through the feeding head 5, the drum 1, and the discharging tail 4, and the rotating shaft 201 is offset in the drum 1, a plurality of sets of material mixing blades 202 are installed at intervals on the rotating shaft 201, the material pushing spiral blade 203 is installed at one end of the rotating shaft 201 close to the discharging tail 4, the feeding spiral blade 204 is installed at the front end of the feeding cylinder, the reverse spiral blade 205 is installed at the tail end of the oblique cone cylinder, and the spiral direction of the reverse spiral blade 205 is opposite to the spiral direction of the material pushing spiral blade 203. The pushing spiral blade 203 mainly functions to push out the mixed materials, and the reverse pushing spiral blade 205 mainly functions to reversely push the materials into the discharge hole, so that the materials are prevented from entering a gap between the rotor shaft and the hole and leaking out.

The mixing paddle 202 and the rotating shaft 201 are detachably mounted, and the deflection angle of the mixing paddle 202 is adjustable. The mixing paddle 202 on the full axis can be segmentally provided with different deflection angles to adapt to different materials and mixing process requirements, and meanwhile, each mixing paddle 202 and the spiral blade can be detached and replaced. In order to prolong the service life of the spiral, the peripheries of the spiral blades of the pushing spiral blade 203, the feeding spiral blade 204 and the reverse spiral blade 205 are embedded with high abrasion-resistant alloy.

The stirring rotor driving device 6 is used for driving the rotating shaft 201 to rotate, the rotating direction of the rotating shaft 201 is opposite to that of the roller 1, and the rotating speed of the rotating shaft 201 is greater than that of the roller 1.

As shown in fig. 3 and 4, the dynamic sealing mechanism includes conical moving rings 103 respectively fixedly mounted at two ends of the drum 1 through angle steel rings 104, the drum sealing cover includes an end plate 901, a labyrinth sealing static conical ring 902, a conical static ring 903, a carbon-silicon-aluminum composite sealing plate 904, a spring plate 905, a sleeved cylinder 906, and a nylon ring 907, the outer diameter of the end plate 901 is larger than the caliber of the drum 1, the sleeved cylinder 906 is fixedly connected with the end plate 901 and sleeved at a port of the drum 1, the nylon ring 907 is lined on the contact surface between the sleeved cylinder 906 and the drum 1, the conical static ring 903 is fixed at the outer edge of the end plate 901 and is inclined towards one side close to the drum 1, the inclined angles of the conical moving ring 103 and the conical static ring 903 are the same, the labyrinth sealing static conical ring 902 is arranged between the sleeved cylinder 906 and the static ring 903, and a plurality of the carbon-silicon-aluminum composite sealing plates 904 are fixed on the two ends of the drum 1, and the drum sealing cover is covered with the end plate 901, The elastic sheet 905 is fixed on the conical surface stationary ring 903 through screws, a plurality of carbon silicon aluminum composite sealing plates 904 are sequentially spliced through joint openings, and the elastic sheet 905 presses the carbon silicon aluminum composite sealing plates 904 and tightly clings to the conical surface stationary ring 903 and the conical surface movable ring 103, so that the sealing purpose is achieved.

As shown in fig. 1 and 5, an ash leakage port is formed in an end plate 901 below the roller sealing cover and between the labyrinth sealing static cone ring 902 and the sleeve cylinder 906, and an ash collection cylinder 10 is butted at the ash leakage port, so that a small amount of escaping dust can be collected and cleaned regularly.

The speed reduction motors of the stirring rotor driving device 6 and the roller driving device 7 of the embodiment adopt parallel shaft-helical gear speed reduction motors with high modular design, and have the advantages of high mechanical efficiency, large transmission ratio, low noise, high strength, small volume and long service life. The stirring rotor driving device 6 drives the stirring rotor through a speed reducing motor and a pair of V-belt wheels. The drum driving device 7 drives the drum by a reduction motor and a pair of large and small gears.

Many modifications and other embodiments of the utility model will come to mind to one skilled in the art to which this invention pertains having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is to be understood that the utility models are not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. The utility model provides a large-scale continuous type blendor, includes frame (8), cylinder (1), its characterized in that: the automatic material feeding device also comprises a stirring and pushing rotor (2), a supporting and blocking roller device (3), a discharging machine tail (4), a feeding machine head (5), a stirring and pushing rotor driving device (6) and a roller driving device (7);

the supporting and blocking roller device (3) is fixedly arranged on the rack (8), and the roller (1) is obliquely arranged on the supporting and blocking roller device (3);

the roller driving device (7) is used for driving the roller (1) to rotate;

the feeding machine head (5) comprises a roller sealing cover, a feeding barrel connected with the roller sealing cover and a feeding barrel shaft end sealing cover connected with the feeding barrel, the discharging machine tail (4) comprises a roller sealing cover, an inclined conical barrel connected with the roller sealing cover, an inclined conical barrel shaft end sealing cover connected with the inclined conical barrel and a discharging barrel connected with the inclined conical barrel, and the roller sealing covers are respectively connected with two ends of the roller (1) in a rotating fit manner through dynamic sealing mechanisms;

the stirring and pushing rotor (2) comprises a rotating shaft (201), material mixing blades (202) and a material pushing spiral blade (203), wherein the rotating shaft (201) penetrates through the feeding machine head (5), the roller (1) and the discharging machine tail (4), the rotating shaft (201) is offset in the roller (1), a plurality of groups of material mixing blades (202) are arranged on the rotating shaft (201) at intervals, and the material pushing spiral blade (203) is arranged at one end, close to the discharging machine tail (4), of the rotating shaft (201);

the stirring rotor driving device (6) is used for driving the rotating shaft (201) to rotate, the rotating direction of the rotating shaft (201) is opposite to that of the roller (1), and the rotating speed of the rotating shaft (201) is greater than that of the roller (1).

2. A large continuous mixer according to claim 1, characterized in that: the inclined angle of the roller (1) is 5-12 degrees.

3. A large scale continuous mixer according to claim 1, characterized in that: the outer wall welding of cylinder (1) has bearing rolling ring (101), and cylinder (1) passes through bearing rolling ring (101) with hold in the palm and keep off cylinder device (3) cooperation, hold in the palm and keep off cylinder device (3) and include two sets of riding wheel subassemblies and a set of fender wheel subassembly, two sets of riding wheel subassemblies are divided and are established and are used for vertical support cylinder (1) on the both sides of bearing rolling ring (101), keep off the wheel subassembly and set up and be used for side direction supporting roller (1) in one side of bearing rolling ring (101).

4. A large scale continuous mixer according to claim 1, characterized in that: the dynamic sealing mechanism comprises conical surface dynamic rings (103) which are fixedly arranged at two ends of the roller (1) through angle steel rings (104), the roller sealing cover comprises an end plate (901), a labyrinth sealing static conical ring (902), a conical surface static ring (903), a carbon silicon aluminum composite sealing plate (904), an elastic sheet (905), a sleeving cylinder (906) and a nylon ring (907), the outer diameter of the end plate (901) is larger than the caliber of the roller (1), the sleeving cylinder (906) is fixedly connected with the end plate (901) and sleeved at the port of the roller (1), the nylon ring (907) is lined on the contact surface of the sleeving cylinder (906) and the roller (1), the conical surface static ring (903) is fixed at the outer edge of the end plate (901) and is inclined towards one side close to the roller (1), and the inclined angles of the dynamic rings (103) and the static rings (903) are consistent, the labyrinth seal static cone ring (902) is arranged between a sleeve cylinder (906) and a conical surface static ring (903), a plurality of carbon silicon aluminum composite sealing plates (904) and an elastic sheet (905) are fixed on the conical surface static ring (903) through screws, the plurality of carbon silicon aluminum composite sealing plates (904) are sequentially spliced through joint openings, and the elastic sheet (905) presses the carbon silicon aluminum composite sealing plates (904) and tightly clings to the conical surface static ring (903) and the conical surface moving ring (103).

5. A large scale continuous mixer according to claim 4, wherein: an ash leakage opening is formed in an end plate (901) between the labyrinth seal static cone ring (902) and the sleeved cylinder (906) below the roller seal cover, and an ash collection cylinder (10) is in butt joint with the ash leakage opening.

6. A large continuous mixer according to claim 1, characterized in that: the mixing paddle (202) and the rotating shaft (201) are detachably mounted, and the deflection angle of the mixing paddle (202) is adjustable.

7. A large continuous mixer according to claim 1, characterized in that: the feeding spiral blade (204) and the reverse-pushing spiral blade (205) are further mounted on the rotating shaft (201), the feeding spiral blade (204) is arranged at the front end of the feeding cylinder, the reverse-pushing spiral blade (205) is arranged at the tail end of the oblique conical cylinder, and the spiral direction of the reverse-pushing spiral blade (205) is opposite to the spiral direction of the pushing spiral blade (203).

8. A large continuous mixer according to claim 1, characterized in that: the peripheries of the helical blades of the pushing helical blade (203), the feeding helical blade (204) and the reverse pushing helical blade (205) are embedded with high-wear-resistant alloy.

9. A large continuous mixer according to claim 1, characterized in that: the inner wall of the roller (1) is pasted with high wear-resistant ceramic chips.

10. A large continuous mixer according to claim 1, characterized in that: two ends of the roller (1) are respectively provided with a manhole, and the manhole is sealed by an openable manhole cover (102).