CN210602588U

CN210602588U - Grit drying drum

Info

Publication number: CN210602588U
Application number: CN201921538928.XU
Authority: CN
Inventors: 张建国; 孙仁海; 张暄
Original assignee: Beijing Road New Asphalt Concrete Co Ltd
Current assignee: Beijing Road New Asphalt Concrete Co Ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-05-22
Anticipated expiration: 2029-09-16

Abstract

The utility model relates to a sand drying roller, which comprises a frame, a rotating drum, a middle supporting piece, an end supporting piece, a driving component and a flame thrower; the frame is arranged on the ground; the rotary drum is rotatably supported on the rack through the middle supporting piece and the end supporting piece, a certain included angle is formed between the axis of the rotary drum and the horizontal plane, and a plurality of blades are arranged on the inner wall of the rotary drum and are spirally arranged and uniformly distributed at intervals; the driving assembly is arranged on the frame and used for driving the rotary drum to rotate; the flame thrower is arranged at the lower end of the rotary drum and used for heating the air in the rotary drum; the device also comprises a fan; the fan and the flame thrower are arranged at the same end of the rotary drum, and the air outlet end of the fan corresponds to the interior of the rotary drum. The utility model discloses a set up the fan, can accelerate the circulation of hot air in the rotary drum, the extension stoving route can reduce to appear drying the incomplete condition to the grit, promotes the drying efficiency to the grit.

Description

Grit drying drum

Technical Field

The utility model relates to a drying equipment, in particular to grit drying roller.

Background

When asphalt concrete used for paving is manufactured, sand and stone materials are dried and heated, and then are mixed with hot asphalt and cold mineral powder, and a sand and stone drying roller is a device for drying the sand and stone materials.

The existing drying roller generally comprises a rack, a rotating drum, a driving assembly and a drying assembly, wherein the rack is arranged on the ground, the rotating drum is rotatably arranged on the rack, and the axis of the rotating drum is obliquely arranged; the driving assembly is arranged on the frame and used for driving the rotary drum to rotate; the rotary drum is internally provided with a turnover plate, the sand and stone are driven to rotate in the rotary drum through the turnover plate, the rotary drum has a certain inclination to drive the sand and stone therein to move from one end of the rotary drum to the other end, and the sand and stone are gradually dispersed in the process; the drying component is used for introducing hot air into the rotary drum, drying the sand and stone in the rotary drum and then discharging the dried sand and stone.

When the sandstone in the rotary drum is dried, heat is generated at one end of the rotary drum through a heat source, air nearby is changed into hot air through heat transfer, the sandstone rotates upwards along with the turnover plate in the rotating process of the rotary drum and then slides down to form a material curtain, the material curtain is fully contacted with the surrounding hot air, and the sandstone is dried; however, during drying, the sand is dried by air near the heat source, the generated heat only acts near the port, the circulation is poor, the drying distance is short in the sand conveying process, the phenomenon that the sand is discharged from the discharge port without being completely dried possibly exists, and the sand drying efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a grit drying roller, it is through setting up the fan, can accelerate the circulation of hot air in the rotary drum, and extension stoving route can reduce to appear drying incomplete condition to the grit, promotes the drying efficiency to the grit.

The above object of the present invention can be achieved by the following technical solutions: a sand drying roller comprises a frame, a rotating drum, a middle supporting piece, an end supporting piece, a driving assembly and a flame thrower; the frame is arranged on the ground; the rotary drum is rotatably supported on the rack through the middle supporting piece and the end supporting piece, a certain included angle is formed between the axis of the rotary drum and the horizontal plane, and a plurality of blades are arranged on the inner wall of the rotary drum and are spirally arranged and uniformly distributed at intervals; the driving assembly is arranged on the frame and used for driving the rotary drum to rotate; the flame thrower is arranged at the lower end of the rotary drum and used for heating the air in the rotary drum; the device also comprises a fan; the fan and the flame thrower are arranged at the same end of the rotary drum, and the air outlet end of the fan corresponds to the interior of the rotary drum.

Through adopting above-mentioned technical scheme, when using the stoving cylinder to dry the grit, put into the rotary drum with its higher one end from the rotary drum in, the grit removes to lower one end, at this in-process, the grit disperses gradually, in the lower one end of rotary drum, the flame thrower is to the inside flame projecting of rotary drum, heat near the air, the grit drops from the side down on the rotary drum, form the material curtain, fully contact with the hot-air, dry, through the fan, can blow the high temperature air of tip to the inside of rotary drum, can prolong the route of drying to the grit, the air circulation in the reinforcing rotary drum, it is more abundant to dry the grit in the rotary drum, reduce the not thorough phenomenon of drying appearing, promote drying efficiency.

The utility model discloses further set up to: the end support comprises a head support seat, an end cover and a bearing; the head supporting seat is arranged on the rack and is positioned at the higher end of the rotary drum; the bearing outer ring is embedded in the head supporting seat, and the inner ring of the bearing outer ring is in interference fit with the outer wall of the rotary drum; the end cover is fixed on the frame and positioned at the lower end of the rotating shaft, a bearing is also matched in the end cover, the outer ring of the bearing is in interference fit with the inner ring of the end cover, and the inner ring of the bearing is in interference fit with the outer ring of the rotating drum; the lower part of the side surface of the end cover is provided with a discharge hole.

By adopting the technical scheme, the two ends of the rotary drum are rotatably supported, and the rotary drum is supported by the bearing, so that friction in the rotating process of the rotary drum can be reduced, and the rotary drum can rotate more smoothly; in addition, carry out the port of the lower one end of rotary drum through setting up the end cover and carry out the sealed of certain degree, can reduce the thermal waste that the flame thrower produced, promote drying efficiency.

The utility model discloses further set up to: the flame-throwing end of the flame thrower is positioned in the middle of the end cover, extends into the end cover and faces the interior of the rotary drum, and spouts flame into the rotary drum; the fan has a plurality ofly, sets up on the end cover, and the interval evenly distributed is around the subassembly that spouts a fire.

Through adopting above-mentioned technical scheme, fan evenly distributed is in the periphery of flame projecting end, can with the more even inside conveying to the rotary drum of the heat that the flame thrower produced, can make high temperature air more even in the inside distribution of rotary drum, more even to the stoving of wherein grit, reduces the phenomenon that appears drying to one of them part grit.

The utility model discloses further set up to: the flame thrower comprises an air storage tank, a vent pipe and a flame throwing nozzle; the air storage tank is arranged on the outer side of the rotary drum; the flame-throwing nozzle is arranged on the end cover, and the flame-throwing end of the flame-throwing nozzle is communicated with the interior of the rotary drum; the two ends of the vent pipe are communicated with the gas storage tank and the flame nozzle.

Through adopting above-mentioned technical scheme, the structure of flame thrower is fairly simple, and the convenience is supplemented the combustible gas of flame thrower, and the size of the convenient control flame thrower of comparison is more convenient.

The utility model discloses further set up to: the middle support piece comprises a base, a support roller and a support ring; the base is fixed on the frame; the two support rollers are rotatably supported at two ends of the base, and the axes of the two support rollers are parallel to the axis of the rotary drum; the support ring is sleeved and fixed on the rotary drum, is coaxial with the rotary drum, and the outer side surface of the support ring is abutted against the side surface of the support roller.

Through adopting above-mentioned technical scheme, support the rotary drum in the centre of rotary drum, the atress that can less tip support piece makes the rotation of rotary drum more stable, and is less to the damage of part, increase of service life.

The utility model discloses further set up to: the driving assembly comprises a ring gear, a driving motor and a cylindrical gear; the ring gear has an outward tooth surface, is sleeved and fixed on the outer wall of the rotary drum and is coaxial with the rotary drum; the driving motor is fixed on the frame; the cylindrical gear is fixed on an output shaft of the driving motor and is meshed with the ring gear.

Through adopting above-mentioned technical scheme, can be more convenient control and adjust the rotational speed of rotary drum, simple structure easily controls.

The utility model discloses further set up to: the drum comprises an inner drum and an outer drum; be provided with many connecting plates between inner tube and urceolus, inner tube and urceolus pass through connecting plate fixed connection and are in the same place to middle part position at the connecting plate is provided with the shock pad, and the shock pad sets up along the length direction of connecting plate.

Through adopting above-mentioned technical scheme, when the grit is more heavier in the rotation, the grit falls the downside from the rotary drum upside, can make the inner tube produce great vibration, and inner tube and urceolus pass through the connecting plate and connect, and be provided with the shock pad on the connecting plate, can reduce the transmission of vibration to the urceolus, reduce the damage to support piece and drive assembly, increase of service life.

The utility model discloses further set up to: the drying roller also comprises a feeding piece; the feeding piece is arranged at a port of the higher end of the rotary drum and comprises a bracket and a feeding groove, and the bracket is fixed on the rack; the feed chute is arranged on the bracket, the larger opening of the feed chute faces upwards, the smaller opening faces downwards and inclines towards the direction of the rotary drum, and the lower opening of the feed chute extends into the interior of the rotary drum.

Through adopting above-mentioned technical scheme, when sending the grit to the rotary drum is inside, only need to the upside opening of feed chute send the grit can, the operation is more convenient, compares and carries the grit in the rotary drum to in the rotation, and this kind of mode is more convenient, also safer simultaneously.

To sum up, the utility model discloses following beneficial effect has:

1. by arranging the fan, when the drying roller is used for drying, high-temperature air near the end part can be blown to the inside of the rotating drum, so that the path filled with the high-temperature air is longer, the path for drying is prolonged, the sand and stone can be dried more thoroughly, in addition, the gas circulation in the rotating drum is enhanced, the sand and stone can be dried more fully, the condition of incomplete drying is reduced, and the drying efficiency is improved;

2. divide into inner tube and urceolus through setting up the rotary drum, connect through the connecting plate between inner tube and the urceolus to be provided with the shock pad at the middle part of connecting plate, when great degree vibration appears in the inner tube, can reduce the transmission of vibration to the urceolus, reduce the damage to support piece and drive assembly, increase of service life.

Drawings

Fig. 1 is a schematic front view of a drying drum;

FIG. 2 is a schematic view of a structure of a drying drum;

FIG. 3 is a schematic view of a burner and fan;

FIG. 4 is a schematic view of the structure of the drum.

In the figure, 1, a frame; 2. a rotating drum; 21. an inner barrel; 22. an outer cylinder; 23. a blade; 24. a connecting plate; 25. a shock pad; 3. a middle support; 31. a base; 32. supporting the rollers; 33. a support ring; 4. an end support; 41. a head support base; 42. an end cap; 421. a baffle ring; 422. a discharge port; 43. a bearing; 5. a drive assembly; 51. a ring gear; 52. a drive motor; 53. a cylindrical gear; 6. a flame thrower; 61. a gas storage tank; 62. a breather pipe; 63. a flame nozzle; 7. a fan; 8. a feeding member; 81. a support; 82. a feed chute.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Examples

Referring to fig. 1 and 2, the sand drying roller comprises a frame 1, a rotating drum 2, a middle supporting piece 3, an end supporting piece 4, a driving assembly 5 and a flame thrower 6; the bracket 1 is arranged on the ground; the rotary drum 2 is rotatably supported on the upper side surface of the frame 1 through a middle supporting piece 3 and an end supporting piece 4, and the axis of the rotary drum 2 is in an inclined state; the driving assembly 5 is arranged on the frame 1 and used for driving the rotary drum 2 to rotate; a torch 6 is provided at the port at the lower end of the bowl 2.

Referring to fig. 4, a plurality of blades 23 are arranged on the inner wall of the rotating drum 2, the blades 23 are arranged in a spiral shape, the blades 23 are uniformly distributed at intervals, and the edges of the blades 23 tilt towards the rotating direction of the rotating drum 2; referring to fig. 1 and 2, two middle supports 3 are provided at both sides of the middle section of the drum 2, and each middle support 3 includes a base 31, a support roller 32, and a support ring 33; the base 31 is fixed on the frame 1 and positioned at the lower side of the rotary drum 2; two support rollers 32 are respectively rotatably supported at two ends of the base 31, and the axial direction of the support rollers 32 is the same as the axial direction of the rotary drum 2; the support ring 33 is sleeved on the rotary drum 2, the inner side surface of the support ring 33 is fixedly connected with the outer side wall of the rotary drum 2, the support ring 33 and the rotary drum 2 are coaxial, and the outer side surface of the support ring is abutted against the side surfaces of the two support rollers 32; the support roller 32 has two ends provided with retaining edges 321 protruding in the radial direction, and the support ring 33 is inserted between the two retaining edges 321 of the support roller 32 to prevent the drum 2 from sliding in the axial direction.

Referring to fig. 1 and 2, end supports 4 are provided at both ends of the drum 2, the end supports 4 including a head support base 41, an end cap 42, and a bearing 43; the head support seat 41 is fixed on the frame 1 and is positioned at the higher end of the rotary drum 2; the outer ring of the bearing 43 is in interference fit with the head support base 41, and the inner ring thereof is in interference fit with the rotary drum 2; the end cover 42 is fixed on the frame 1 and positioned at the lower end of the rotary drum 2, and a retaining ring 421 is arranged on the periphery of the end cover 42 in a protruding manner along the axial direction; the outer ring of the bearing 43 is in interference fit with the inner side of the baffle ring 421, and the inner ring thereof is in interference fit with the rotary drum 2; the driving component 5 is arranged in the middle of the drying roller and is used for driving the rotating drum 2 to rotate; the driving assembly 5 comprises a ring gear 51, a driving motor 52 and a cylindrical gear 53; the tooth surface of the ring gear 51 faces outwards, and is sleeved and fixed on the rotary drum 2 and coaxial with the rotary drum 2; the driving motor 52 is fixed on the frame 1; the cylindrical gear 53 is fixed on the output end of the driving motor 52, is meshed with the ring gear 51, and drives the rotary drum 2 to rotate through the rotation of the driving motor 52; the lower part of keeping off the side of ring 421 has seted up discharge gate 422, and the grit in the rotary drum 2 is seen off the back from discharge gate 422, and the accessible conveyer belt is with grit conveying away.

Referring to fig. 2 and 3, the flame end of the flame thrower 6 is arranged on the end cover 42, and the flame is sprayed into the rotary drum 2, so that the nearby air is dried and heated, and the sand conveyed to the position is dried; the flame thrower 6 includes an air tank 61, a breather pipe 62, and a flame spray nozzle 63; the air storage tank 61 is arranged outside the rotary drum 2; the flame nozzle 63 is arranged on the end cover 42 and extends into the inner side of the end cover 42; the vent pipe 62 communicates the burner 63 with the gas tank 61 to supply combustible gas to the burner 63.

The utility model discloses still include fan 7, fan 7 has 4, sets up on end cover 42 towards the inside terminal surface of rotary drum 2, and the interval evenly sets up, and its air-out end corresponds to the inside of rotary drum 2, makes wherein the air of dry high temperature circulate to the inside of rotary drum 2.

When the drying roller is used for drying the sand, the wet sand is put into the rotating drum 2 from the higher end of the rotating drum 2, the driving motor 52 is started to enable the rotating drum 2 to start to rotate, the sand in the rotating drum 2 is driven by the blades 23 to rotate upwards, and when the blades 23 start to incline downwards, the sand falls from the upside, because the rotating drum 2 is arranged obliquely, the sand can gradually move to the lower end, in the process, the sand can gradually become dispersed, and the sand falls from the blades 23 on the upper side of the rotating drum 2 to form a material curtain; as the gravel moves towards one end close to the end cover 42, the temperature of the air in the rotary drum 2 gradually rises, the gravel forms a material curtain and is fully contacted with the high-temperature air for drying, and the gravel is dried; finally, the dried sand is discharged from the discharge port 422 at the lower side of the drum 2, and the drying of the sand is completed.

Through setting up fan 7, can accelerate the circulation of air in the rotary drum 2, the air of 6 heats through the flame thrower can stretch longer distance to the other end of rotary drum 2, has prolonged the stoving route, makes the grit can have longer drying time, can promote the stoving process to the grit, makes more thoroughly that the grit was dried, has promoted the drying efficiency of grit.

The drying roller is used for drying mineral aggregates such as sand and stones, the sand and stones fall from the upper side to the lower side in the rotary drum 2 and can generate certain impact on the rotary drum 2, and when the amount of the sand and stones is large, more sand and stones fall together, so that the rotary drum 2 can generate large vibration; the rotary drum 2 is mainly supported by the support ring 33 and the bearing 43 and is driven by gear engagement, and the stability of the support part is affected by large vibration of the rotary drum 2, so that the gear is easily damaged; in order to solve the problem, the utility model discloses set up once.

Referring to fig. 4, the drum 2 includes an inner cylinder 21 and an outer cylinder 22; the inner cylinder 21 and the outer cylinder 22 are coaxially arranged, and a connecting plate 24 is arranged between the inner cylinder 21 and the outer cylinder 22; a plurality of connecting plates 24 are uniformly arranged and fixed between the inner cylinder 21 and the outer cylinder 22 and extend from one end to the other end of the rotary drum 2; the middle part of the connecting plate 24 is provided with a shock pad 25, and the shock pad 25 is arranged along the length direction of the connecting plate 24; the blades 23 are arranged on the inner wall of the inner cylinder 21; the support ring 33 and the bearing 43 are connected to the outer wall of the outer cylinder 22.

Include inner tube 21 and urceolus 22 through setting up rotary drum 2, set up the shock pad 25 in the middle part of connecting plate 24, when great vibration appears in inner tube 21, can reduce the transmission of vibration to urceolus 22 through shock pad 25, can make urceolus 22 more stable with being connected of support piece, be difficult to wherein spare part production damage increase of service life.

In order to feed sand into the rotary drum 2 conveniently, referring to fig. 1 and 2, the sand drying drum is provided with a feeding member 8; the feed member 8 includes a support 81 and a feed chute 82; the support 81 is arranged at the port of the higher end of the drum 2; the feed chute 82 is fixed to the support 81, and the feed chute 82 is funnel-shaped with a larger opening facing upward and a smaller opening facing downward and inclined toward the inside of the inner cylinder 21. When the drying device is used, sand is placed into the feeding groove 82, the sand can directly enter the inner barrel 21 and is conveyed downwards for drying, the inner barrel 21 in the rotating process does not need to be fed in the feeding process, and the drying device is convenient to operate and safer.

The embodiment of this embodiment is the utility model discloses preferred embodiment is not according to this restriction the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A sand drying roller comprises a rack (1), a rotary drum (2), a middle supporting piece (3), an end supporting piece (4), a driving assembly (5) and a flame thrower (6); the frame (1) is arranged on the ground; the rotary drum (2) is rotatably supported on the rack (1) through the middle supporting piece (3) and the end supporting piece (4), a certain included angle is formed between the axis of the rotary drum and the horizontal plane, a plurality of blades (23) are arranged on the inner wall of the rotary drum (2), and the blades (23) are spirally arranged and uniformly distributed at intervals; the driving component (5) is arranged on the frame (1) and is used for driving the rotary drum (2) to rotate; the flame thrower (6) is arranged at the lower end of the rotary drum (2) and is used for heating the air in the rotary drum (2); the method is characterized in that: also comprises a fan (7); the fan (7) and the flame thrower (6) are arranged at the same end of the rotary drum (2), and the air outlet end of the fan corresponds to the interior of the rotary drum (2).

2. A sand drying drum as claimed in claim 1, wherein: the end support (4) comprises a head support seat (41), an end cap (42) and a bearing (43); the head supporting seat (41) is arranged on the rack (1) and is positioned at the higher end of the rotary drum (2); the outer ring of the bearing (43) is embedded in the head supporting seat (41), and the inner ring of the bearing is in interference fit with the outer wall of the rotary drum (2); the end cover (42) is fixed on the frame (1) and positioned at the lower end of the rotating shaft, a bearing (43) is also matched in the end cover (42), the outer ring of the bearing (43) is in interference fit with the inner ring of the end cover (42), and the inner ring of the bearing is in interference fit with the outer ring of the rotating drum (2); and the lower part of the side surface of the end cover (42) is provided with a discharge hole (422).

3. A sand drying drum as claimed in claim 2, wherein: the flame-throwing end of the flame thrower (6) is positioned in the middle of the end cover (42), and the flame-throwing end of the flame thrower extends into the end cover (42) and faces the interior of the rotary drum (2) to spray flame therein; the fans (7) are arranged on the end cover (42) and are evenly distributed around the flaming component at intervals.

4. A sand drying drum as claimed in claim 3, wherein: the flame thrower (6) comprises an air storage tank (61), a vent pipe (62) and a flame spray nozzle (63); the air storage tank (61) is arranged outside the rotary drum (2); the flame nozzle (63) is arranged on the end cover (42), and the flame spraying end of the flame nozzle is communicated with the interior of the rotary drum (2); both ends of the vent pipe (62) are communicated with the gas storage tank (61) and the flame projecting nozzle (63).

5. A sand drying drum as claimed in claim 1, wherein: the middle support (3) comprises a base (31), a support roller (32) and a support ring (33); the base (31) is fixed on the frame (1); two support rollers (32) are rotatably supported at two ends of the base (31), and the axes of the support rollers are parallel to the axis of the rotary drum (2); the support ring (33) is sleeved and fixed on the rotary drum (2) and coaxial with the rotary drum (2), and the outer side surface of the support ring is abutted against the side surface of the support roller (32).

6. A sand drying drum as claimed in claim 1, wherein: the driving assembly (5) comprises a ring gear (51), a driving motor (52) and a cylindrical gear (53); the tooth surface of the ring gear (51) faces outwards, and the ring gear is sleeved and fixed on the outer wall of the rotary drum (2) and is coaxial with the rotary drum (2); the driving motor (52) is fixed on the frame (1); the cylindrical gear (53) is fixed to an output shaft of the drive motor (52) and meshes with the ring gear (51).

7. A sand drying drum as claimed in claim 1, wherein: the drum (2) comprises an inner cylinder (21) and an outer cylinder (22); a plurality of connecting plates (24) are arranged between the inner cylinder (21) and the outer cylinder (22), the inner cylinder (21) and the outer cylinder (22) are fixedly connected together through the connecting plates (24), a shock pad (25) is arranged in the middle of each connecting plate (24), and the shock pad (25) is arranged along the length direction of each connecting plate (24).

8. A sand drying drum as claimed in claim 1, wherein: the drying drum further comprises a feeding member (8); the feeding piece (8) is arranged at a port of the higher end of the rotary drum (2), the feeding piece (8) comprises a bracket (81) and a feeding groove (82), and the bracket (81) is fixed on the rack (1); the feed chute (82) is arranged on the bracket (81), the larger opening of the feed chute faces upwards, the smaller opening faces downwards and inclines towards the direction of the rotary drum (2), and the lower side opening of the feed chute extends into the interior of the rotary drum (2).