CN113731252A

CN113731252A - Drum mixer

Info

Publication number: CN113731252A
Application number: CN202111086759.2A
Authority: CN
Inventors: 顾逸; 顾根生; 高锐; 沈劲松
Original assignee: JIANGSU SAIDELI PHARMACEUTICAL MACHINE CO Ltd
Current assignee: JIANGSU SAIDELI PHARMACEUTICAL MACHINE CO Ltd
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2021-12-03

Abstract

The invention provides a roller mixer, which comprises a base and a roller, the speed reducer comprises a plurality of supporting columns, a first spiral belt and a second spiral belt, the supporting columns are fixedly connected with the inner wall of a roller, the first spiral belt and the second spiral belt are fixedly connected with the supporting columns, the rotating direction of the first spiral belt is left-handed, the outer surface of the first spiral belt is contacted with the inner wall of the roller, the outer surface of the second spiral belt is separated from the inner wall of the roller, a feeding hole is formed in one end of the roller, a feeding device is arranged at the feeding hole, a discharging hole is formed in the other end of the roller, a discharging device is arranged at the discharging hole, a material guide groove communicated with the discharging device is formed in the roller, one end of the first spiral belt is communicated with the material guide groove, a large chain wheel is arranged on the periphery of the roller, 1 small chain wheel is arranged on each of the two sides of the roller, the large chain wheel is connected with 2 small chain wheels through chains, a driving chain wheel is connected onto the speed reducer, and the driving chain wheel is connected with 1 small chain wheel through chains. The invention has the advantages of simple and easy operation, long service life, good sealing performance and high discharging efficiency.

Description

Drum mixer

Technical Field

The invention relates to a mixer, in particular to a roller mixer.

Background

The mixer is widely used in industry, and the current mixer has the following disadvantages: 1. most of mixing machines are provided with a main shaft in a cylinder, a helical ribbon is arranged on the main shaft, and then the main shaft is driven to rotate by a motor, so that the helical ribbon is driven to rotate, the main shaft is easily corroded by materials in the cylinder, and the materials are accumulated at the end part of the main shaft to easily cause blockage, so that the rotation is blocked, and the main shaft is inconvenient to maintain and install; 2. when the sealing structure at the feeding end and the sealing structure at the discharging end of the mixer work, material particles are very fine and easily run out from the rotating part, so that material leakage is generated, and parts can be corroded; 3. the discharge gate often sets up at the bottom, generally can all dig the groove at the scene for the convenience of ejection of compact, perhaps raises the mixer wholly, and is very inconvenient, influences production efficiency, and the bottom operation of mixing the machine is very unsafe moreover.

Disclosure of Invention

The invention aims to provide a roller mixer, which is convenient to maintain and install, high in discharging efficiency and good in sealing performance because a main shaft is not required to be arranged in a roller.

In order to achieve the technical purpose and achieve the technical requirements, the invention adopts the technical scheme that: a roller mixer comprises a base, a roller and a speed reducer, wherein the base is used for supporting the roller, the speed reducer further comprises a plurality of struts arranged in the roller, a first spiral belt and a second spiral belt which are arranged in the roller, the struts are fixedly connected with the inner wall of the roller, the first spiral belt and the second spiral belt are fixedly connected with the struts, the spiral directions of the first spiral belt and the second spiral belt are opposite, the spiral direction of the first spiral belt is left-handed, the outer surface of the first spiral belt is in contact with the inner wall of the roller, the outer surface of the second spiral belt is away from the inner wall of the roller, one end of the roller is provided with a feed inlet, the feed inlet is provided with a feed device communicated with the feed inlet, the other end of the roller is provided with a discharge outlet, the discharge outlet is provided with a discharge device communicated with the discharge outlet, a guide chute communicated with the discharge device is arranged in the roller, one end of the first spiral belt is communicated with the guide chute, the periphery of cylinder is equipped with big sprocket, the both sides of cylinder respectively set up 1 little sprocket, big sprocket passes through the chain and links to each other with 2 little sprockets, be connected with drive sprocket on the speed reducer, drive sprocket passes through the chain and links to each other with 1 little sprocket wherein, still be provided with 2 riding wheels on the frame, 2 the riding wheel is located the both sides of cylinder, riding wheel and big sprocket meshing.

As a preferred technical scheme: the periphery of the roller is also provided with a first rolling ring and a second rolling ring, the first rolling ring is arranged at a short distance from the large chain wheel and is fixedly connected with the large chain wheel, the base is provided with a braking device, and the braking device brakes the roller by limiting the second rolling ring to rotate.

As a preferred technical scheme: the braking device is a clamping wheel, the number of the clamping wheels is 2, and the second rolling ring is arranged between the 2 clamping wheels.

As a preferred technical scheme: the discharging device comprises a housing, an air cylinder fixedly arranged at one end of the housing, a sealing cover assembly arranged in the housing, a connecting assembly and a fixing seat fixedly arranged at a discharging port, wherein a first opening is formed in the bottom end of the housing, a through discharging hole is formed in the fixing seat, the fixing seat comprises an installation seat and a discharging part integrated with the installation seat, a first bearing is sleeved on the discharging part, one end of the first bearing is attached to the surface of the installation seat, a first connecting flange is fixedly arranged at the other end of the first bearing, a second sealing ring is arranged in the first connecting flange, a flange cover is arranged on the first connecting flange and fixedly connected with one side of the housing, which faces the discharging port, a second opening is formed in one side of the housing, which faces the discharging port, the discharging part penetrates through the first connecting flange and the flange cover, and a piston rod is arranged in the air cylinder, one end of the piston rod is fixedly connected with the connecting assembly, the connecting assembly is rotatably connected with the sealing cover assembly, and the piston rod can push the sealing cover assembly to enter the discharge hole from the housing and seal the discharge hole.

As a preferred technical scheme: connect the assembly including the locking lid, establish the locking piece in the locking lid, with locking lid fixed connection's connection pad, with connection pad fixed connection's connecting block, second bearing, bearing cap, the one end and the locking piece threaded connection of piston rod, the one end of piston rod is equipped with lock nut, lock nut offsets with the one end of locking piece, the one end and the connection pad fixed connection of locking lid orientation discharge gate, connection pad and connecting block fixed connection, the cover is equipped with the second bearing on the connecting block, the one end of second bearing orientation discharge gate is equipped with the retaining plate, the retaining plate inlays to be established on the connecting block, connecting block and second bearing are established in the bearing cap.

As a preferred technical scheme: the sealing cover assembly comprises a sealing cover, a connecting seat arranged on the sealing cover and a sealing gasket arranged on the connecting seat, and the connecting seat is fixedly connected with the bearing cover.

As a preferred technical scheme: the feeding device comprises an inlet pipe, a second connecting flange, a fixing flange and a third bearing, wherein the fixing flange and the third bearing are arranged at the position of the inlet, a sealing ring is arranged in the fixing flange, the inlet pipe is fixedly connected with the second connecting flange, one end of the third bearing is fixedly connected with the second connecting flange, the other end of the third bearing is fixedly connected with the fixing flange, one end of the fixing flange is provided with a groove, a labyrinth mounting plate is arranged in the groove, the labyrinth mounting plate is fixedly connected with the fixing flange, and a labyrinth sealing ring is arranged on the labyrinth mounting plate.

As a preferred technical scheme: the discharge opening is a taper hole, and the diameter of the taper hole gradually increases from the mounting seat to the discharge part.

As a preferred technical scheme: and a gland is fixedly arranged on the sealing gasket.

As a preferred technical scheme: and air hammers are arranged on one side of the roller and one end of the roller.

The invention has the beneficial effects that: a drum mixer, compared to the traditional solution:

1) the speed reducer is arranged outside the roller, the pillar is arranged on the inner wall of the roller, the spiral belt is fixedly connected with the pillar, the speed reducer drives the small chain wheel to rotate, the small chain wheel drives the roller to rotate through chain transmission, and the speed reducer and the chain wheel are both outside and are convenient to install and maintain; the material guide groove is formed in the discharging opening, the first spiral belt is communicated with the material guide groove, the speed reducer is started to rotate reversely after the drum mixer is mixed, the first spiral belt rotates leftwards, the first spiral belt can convey materials to the material guide groove after the first spiral belt is started to rotate reversely, the materials enter the discharging device through the material guide groove, and discharging efficiency is high; the discharge port is arranged at one end of the roller, so that the material is convenient to discharge, and compared with the situation that the discharge port is arranged at the bottom, the discharging is obviously more convenient;

2) preferably, the discharging device has good sealing performance, and the sealing cover is pushed by the cylinder to seal the discharging hole, so that the sealing effect is good;

3) preferably, the labyrinth seal ring has good sealing effect, and when the roller works, the materials in the roller cannot escape from the rotating part, so that the particles are prevented from corroding parts, the service life is prolonged, and the maintenance rate is reduced;

4) preferably, the air hammer may vibrate the drum so that the material stuck on the inner wall of the drum falls.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a left side view of the present invention;

FIG. 3 is a top view of the present invention;

FIG. 4 is a structural view of a feeding device;

FIG. 5 is an enlarged view of portion A of FIG. 4;

FIG. 6 is a view showing the structure of a discharging device;

FIG. 7 is an enlarged view of detail B of FIG. 6;

fig. 8 is an enlarged view of a portion C of fig. 6.

In fig. 1-8, 1, a drum; 2. a second rolling ring; 3. a first rolling ring; 4. a large sprocket; 5. an access hole; 6. a first ribbon; 7. a second helical ribbon; 8. a pillar; 9. a feeding device; 10. a discharging device; 11. a material guide chute; 12. a machine base; 13. a speed reducer; 14. a drive sprocket; 15. a small sprocket; 16. a stopper cover; 17. A riding wheel; 18. a stopper block; 19. connecting blocks; 20. a pinch wheel; 21. a flange cover; 22. a labyrinth mounting plate; 23. an air hammer; 24. a feed pipe; 25. a second connecting flange; 26. a labyrinth seal ring; 27. a third bearing; 28. a first seal ring; 29. a fixed flange; 30. a cylinder; 3001. a piston rod; 31. a housing; 32. a sealing cover; 33. a fixed seat; 3301. a mounting seat; 3302. a discharge part; 3303. a discharge hole; 34. A first bearing; 35. a second seal ring; 36. a first connecting flange; 37. a connecting disc; 38. a second bearing; 39. a sheath; 40. a bearing cap; 41. a stop nut; 42. a stopper piece; 43. sealing gaskets; 44. A gland; 45. a connecting seat; 46. a first bracket; 47. a second bracket; 48. a first shield cover; 49. and a second cover.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if the terms "top", "bottom", "left", "right", "front", "back", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description of the present invention, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms described above will be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1-8, a drum mixer comprises a base 12 for supporting a drum 1, the drum 1, a speed reducer 13, a plurality of pillars 8 arranged in the drum 1, and a first spiral belt 6 and a second spiral belt 7 arranged in the drum 1, wherein the pillars 8 are connected with the inner wall of the drum 1 by welding or the like, the first spiral belt 6 and the second spiral belt 7 are fixedly connected with the pillars 8, the first spiral belt 6 and the second spiral belt 7 have opposite rotation directions, the first spiral belt 6 has a left rotation direction, the outer surface of the first spiral belt 6 is in contact with the inner wall of the drum 1, the outer surface of the second spiral belt 7 is away from the inner wall of the drum 1, a feed inlet is arranged at one end of the drum 1, a feed device 9 communicated with the feed inlet is arranged at the feed inlet, a discharge outlet is arranged at the other end of the drum 1, and a discharge device 10 communicated with the discharge outlet is arranged at the discharge outlet, a material guide groove 11 communicated with a discharging device 10 is arranged in the roller 1, one end of the first spiral belt 6 is communicated with the material guide groove 11, a large chain wheel 4 is arranged on the periphery of the roller 1, two sides of the roller 1 are respectively provided with 1 small chain wheel 15, the small chain wheels 15 are arranged at one end, close to a speed reducer 13, of the base, a platform for mounting the speed reducer 13 is arranged on one side of the base 12 in the length direction, the large chain wheel 4 is connected with 2 small chain wheels 15 through a chain, the speed reducer 13 is connected with a driving chain wheel 14, the driving chain wheel 14 is connected with 1 of the small chain wheels 15 through a chain, two riding wheels 17 are further arranged on the base 12, the two riding wheels 17 are arranged on two sides of the roller 1, and the riding wheels 17 are meshed with the large chain wheel 4; the mixer in the existing market adopts a main shaft axially installed in a cylinder body, a spiral belt is arranged on the main shaft, and the main shaft is driven by a motor to rotate, so that the mixing of materials is realized, and the inventor discovers that the mixer in the existing market has a plurality of problems in the actual production: firstly, because the main shaft is axially arranged, materials cannot be discharged axially, the best scheme is to discharge from the bottom of the cylinder, at the moment, the mixer needs to be lifted, or a trough needs to be dug on a working surface, so that the operation personnel obviously have trouble in handling and have certain risk; secondly, the main shaft is arranged in the cylinder body, so that the main shaft is easily corroded by materials, the service life is short, and the main shaft is inconvenient to maintain; the inventor considers that if the main shaft is taken off, the main shaft is not worried about to be corroded in the cylinder body, axial discharging can be carried out, and the production efficiency is improved, the inventor proposes a scheme that the roller 1 rotates, a large chain wheel 4 is sleeved on the roller 1, a driving chain wheel 14 is installed on a speed reducer 13, the speed reducer 13 drives the driving chain wheel 14 to rotate, the driving chain wheel 14 drives 2 small chain wheels 15 to rotate through a chain, so that the roller 1 can be driven to rotate, and a riding wheel 17 is meshed with the large chain wheel 4, so that the supporting effect is achieved, the rotation can be more stable, further, the position can be adjusted by the small chain wheel 15 which is closest to the speed reducer 13, and the tightness of the chain is adjusted; the method for realizing axial discharging of the invention is that the material is conveyed through the first ribbon 6 of the self, because the first ribbon 6 is rotated leftwards, the material is not conveyed to the guide chute 11 during forward rotation, the weight of the material can be measured through the weighing sensor, when the material in the mixer is mixed, the forward rotation is closed, the reverse rotation is opened, the rotating mode of the first ribbon 6 is opposite to that before, then the material is pushed to the guide chute 11 by the first ribbon 6, because one end of the first ribbon 6 is communicated with the guide chute 11, the material enters the housing 31 through the guide chute 11, the material adhered on the inner wall of the roller 1 can be scraped off by the first ribbon 6, the rotating speed of the reverse first ribbon 6 is fast, the discharging efficiency is high, the production efficiency can be obviously improved, meanwhile, the discharging is carried out from the housing 31 on the side, the discharging is not carried out from the bottom of the roller 1, a deep groove is not dug or the roller mixer is lifted, be convenient for connect containers such as hopper to connect the material, certainly under some special circumstances, also need rise to the take the altitude with the drum mixer, but also need conveniently more than the ejection of compact from the bottom, the operation is also safer, than the dead weight ejection of compact efficiency through the material moreover.

As shown in fig. 1-8, a first rolling ring 3 and a second rolling ring 2 are further disposed on the outer periphery of the drum 1, the first rolling ring 3 is disposed at a short distance from the large chain wheel 4, the first rolling ring 3 is connected with the large chain wheel 4 by bolts, fixing pins, etc., a braking device is disposed on the machine base 12, the braking device brakes the drum 1 by limiting the rotation of the second rolling ring 2, further, a first blocking cover 48 and a second blocking cover 49 are disposed on the drum 1, the first blocking cover 48 is fixedly connected with the machine base 12 by bolts, the first blocking cover 48 and the second blocking cover 49 are arc-shaped, two ends of the arc-shaped blocking cover extend onto the machine base 12, the first rolling ring 3 and the large chain wheel 4 are disposed in the first blocking cover 48, the second rolling ring 2 is disposed in the second blocking cover 49, so that the first blocking cover 48 and the second blocking cover 49 can protect the first rolling ring 3, the second rolling ring 2 and the large chain wheel 4, and reduce air to the first rolling ring 3, and reduce air to the first rolling ring 3, The second rolls the corruption of circle 2 and big sprocket 4, and is further, arresting gear is pinch-off rollers 20, pinch-off rollers 20 quantity is 2, and two pinch-off rollers 20 are established on frame 12, second rolls circle 2 and establishes between 2 pinch-off rollers 20, and pinch-off rollers 20 rolls circle 2 through pressing from both sides tight second and rolls the braking, simple structure, easily operation, braking effect is good.

As shown in fig. 1-8, the discharging device 10 includes a housing 31, a cylinder 30 fixedly disposed at one end of the housing 31, a sealing cover assembly disposed in the housing 31, a connecting assembly, and a fixing seat 33 fixedly disposed at the discharging port, a first opening is disposed at a bottom end of the housing 31, a through discharging hole 3303 is disposed in the fixing seat 33, the fixing seat 33 includes a mounting seat 3301 and a discharging portion 3302 integrated with the mounting seat 3301, a first bearing 34 is sleeved on the discharging portion 3302, one end of the first bearing 34 is attached to a surface of the mounting seat 3301, a first connecting flange 36 is fixedly disposed at the other end of the first bearing 34, a second sealing ring 35 is disposed in the first connecting flange 36, a flange cover 21 is disposed on the first connecting flange 36, the flange cover 21 is fixedly connected to one side of the housing 31 facing the discharging port, a second opening is disposed at one side of the housing 31 facing the discharging port, the discharging part 3302 passes through the first connecting flange 36 and the flange cover 21, a piston rod 3001 is arranged in the cylinder 30, one end of the piston rod 3001 is fixedly connected with a connecting assembly, the connecting assembly is rotatably connected with the sealing cover 32 assembly, the piston rod 3001 can push the sealing cover 32 assembly to enter the discharging hole 3303 from the housing 31 and seal the discharging hole, further, the connecting assembly comprises a stop cover 16, a stop block 18 arranged on the stop cover 16, a connecting disc 37 fixedly connected with the stop cover 16, a connecting block 19 fixedly connected with the connecting disc 37, a second bearing 38 and a bearing cover 40, one end of the piston rod 3001 is in threaded connection with the stop block 18, one end of the piston rod 3001 is provided with a stop nut 41, the stop nut 41 abuts against one end of the stop block 18, one end of the stop cover 16 facing the discharging hole is fixedly connected with the connecting disc 37, the connecting disc 37 is fixedly connected with the connecting block 19, the second bearing 38 is sleeved on the connecting block 19, a stop piece 42 is arranged at one end, facing the discharge hole, of the second bearing 38, the stop piece 42 is embedded on the connecting block 19, the connecting block 19 and the second bearing 38 are arranged in the bearing cover 40, further, the sealing cover 32 assembly comprises a sealing cover 32, a connecting seat 45 arranged on the sealing cover 32, and a sealing gasket 43 arranged on the connecting seat 45, and the connecting seat 45 is fixedly connected with the bearing cover 40; the working principle of the discharging device 10 is as follows: the discharge hole 3303 in the fixed seat 33 communicates with the inside of the housing 31, during operation, the piston rod 3001 pushes the sealing cover assembly to enter the discharge hole 3303 from the housing 31 and form a seal to the discharge hole, the outer diameter of the sealing gasket 43 is larger than the minimum diameter of the discharge hole 3303, the inner wall of the discharge hole 3303 compresses the sealing gasket 43, thereby realizing the seal, after the seal is good, the sealing cover assembly will rotate along with the fixed seat 33 due to the action of the second bearing 38, and the fixed seat 33 will rotate along with the roller 1 due to the action of the first bearing 34; the interior of the guide chute 11 is further divided into an upper cavity and a lower cavity, so that the situation that too many materials are bonded into blocks during discharging is prevented, when discharging is performed, the piston rod 3001 retracts, the sealing cover assembly is pulled back into the housing 31, after the speed reducer 13 is started to rotate reversely, the first screw belt 6 conveys the materials to the guide chute 11, the materials coming out of the guide chute 11 enter the housing 31 through the discharge hole 3303, the bottom end of the housing 31 is provided with a second opening, the materials are discharged from the second opening, further, the discharge hole 3303 is a conical hole, the diameter of the conical hole is gradually increased from the mounting seat 3301 to the discharge part 3302, the conical hole has a certain angle, the discharging is faster, the bonding is prevented, and meanwhile, the sealing performance matched with the sealing gasket 43 is also better; the number of the second sealing rings 35 is two, and the second sealing rings are stacked, so that the sealing performance is improved; further, the piston rod 3001 is sleeved with a sheath 39 for protecting the piston rod 3001 from corrosion.

As shown in fig. 1-8, the material guiding groove 11 is fixedly connected with the roller 1, a connecting plate is welded on the material guiding groove 11, and then the material guiding groove is welded with the roller 1 through the connecting plate, one end of the first spiral belt 6 is communicated with the material guiding groove 11, after the material guiding groove is opened and reversed, the first spiral belt 6 drives the material to enter the material guiding groove 11, the second spiral belt 7 is separated from the inner wall of the roller 1, the first spiral belt 6 is in contact with the inner wall of the roller 1, thus, staggered stirring is formed, different vortexes are formed, and the mixing effect is better.

As shown in fig. 1 to 8, the feeding device 9 includes a feeding pipe 24, a second connecting flange 25, a fixing flange 29 disposed at the feeding port, and a third bearing 27, a valve is generally disposed in the feeding pipe 24, a first sealing ring 28 is disposed in the fixing flange 29, the feeding pipe 24 is fixedly connected to the second connecting flange 25, one end of the third bearing 27 is fixedly connected to the second connecting flange 25, the other end of the third bearing 27 is fixedly connected to the fixing flange 29, a groove is disposed at one end of the fixing flange 29 close to the feeding port, a labyrinth mounting plate 22 is disposed in the groove, the labyrinth mounting plate 22 is fixedly connected to the fixing flange 29 by bolts, and a labyrinth sealing ring 26 is disposed on the labyrinth mounting plate 22; labyrinth sealing ring 26 installs in feed inlet department, can form fine sealed to mounting flange 29, and the material gets into labyrinth sealing ring 26, through labyrinth processing, during the material can't reach mounting flange 29, sealed effect promotes obviously, and the material can not run into spare part, has prolonged the life that the cylinder mixes the machine greatly.

As shown in fig. 1-8, the feeding device 9 is fixedly connected with the base 12 through the first bracket 46, and the discharging device 10 is fixedly connected with the base 12 through the second bracket 47, so that the structure is simple, the support performance is good, and the installation and the disassembly are easy.

As shown in fig. 1-8, a pressing cover 44 is fixedly disposed on the sealing gasket 43 to press the sealing gasket 43 and protect the sealing gasket 43, so as to prolong the service life of the sealing gasket 43.

As shown in fig. 1-8, the air hammer 23 is arranged on one side of the roller 1 and one end of the roller 1, when the inner wall of the roller 1 still has the material which can not be scraped completely, the air hammer 23 vibrates the roller 1 to drop the material, so that the collection amount is increased, and the material waste is avoided.

As shown in fig. 1-8, the upper end of the roller 1 is also provided with an access hole 5 for convenient access.

As shown in fig. 1 to 8, the first bearing 34 and the third bearing 27 are rotary supports with different outer diameters, which are also called as turntable bearings, so that the rotary performance is better, and the bearings are not easy to fall off during rotation, and the second bearing 38 is a roller bearing.

The foregoing examples are given solely for the purpose of illustrating the invention and are not to be construed as limiting the embodiments, and other variations and modifications in form thereof will be suggested to those skilled in the art upon reading the foregoing description, and it is not necessary or necessary to exhaustively enumerate all embodiments and all such obvious variations and modifications are deemed to be within the scope of the invention.

Claims

1. A roller mixer comprises a machine base for supporting a roller, the roller and a speed reducer, and is characterized by further comprising a plurality of pillars arranged in the roller, a first spiral belt and a second spiral belt arranged in the roller, the pillars are fixedly connected with the inner wall of the roller, the first spiral belt and the second spiral belt are fixedly connected with the pillars, the spiral directions of the first spiral belt and the second spiral belt are opposite, the spiral direction of the first spiral belt is left-handed, the outer surface of the first spiral belt is in contact with the inner wall of the roller, the outer surface of the second spiral belt is away from the inner wall of the roller, one end of the roller is provided with a feed inlet, a feed device communicated with the feed inlet is arranged at the feed inlet, a discharge outlet is arranged at the other end of the roller, a discharge device communicated with the discharge outlet is arranged at the discharge outlet, a guide chute communicated with the discharge device is arranged in the roller, one end of the first spiral belt is communicated with the guide chute, the periphery of cylinder is equipped with big sprocket, the both sides of cylinder respectively set up 1 little sprocket, big sprocket passes through the chain and links to each other with 2 little sprockets, be connected with drive sprocket on the speed reducer, drive sprocket passes through the chain and links to each other with 1 little sprocket wherein, still be provided with 2 riding wheels on the frame, 2 the riding wheel is located the both sides of cylinder, riding wheel and big sprocket meshing.

2. The drum mixer according to claim 1, wherein the drum further comprises a first rolling ring and a second rolling ring on the outer periphery of the drum, the first rolling ring is located at a position short of the large chain wheel, the first rolling ring is fixedly connected with the large chain wheel, and the base is provided with a braking device which brakes the drum by limiting the rotation of the second rolling ring.

3. The drum mixer according to claim 2, wherein said braking means are pinch wheels, said pinch wheels being 2 in number, said second roller ring being provided between 2 pinch wheels.

4. The drum mixer according to claim 1, wherein the discharging device comprises a housing, a cylinder fixedly disposed at one end of the housing, a sealing cover assembly disposed in the housing, a connecting assembly, and a fixing seat fixedly disposed at the discharging port, the bottom end of the housing is provided with a first opening, the fixing seat is provided with a discharging hole therethrough, the fixing seat comprises a mounting seat and a discharging portion integrated with the mounting seat, the discharging portion is sleeved with a first bearing, one end of the first bearing is attached to the surface of the mounting seat, the other end of the first bearing is fixedly provided with a first connecting flange, a second sealing ring is disposed in the first connecting flange, the first connecting flange is provided with a flange cover fixedly connected to one side of the housing facing the discharging port, the housing is provided with a second opening facing the discharging port, the discharging part penetrates through the first connecting flange and the flange cover, a piston rod is arranged in the cylinder, one end of the piston rod is fixedly connected with the connecting assembly, the connecting assembly is rotatably connected with the sealing cover assembly, and the piston rod can push the sealing cover assembly to enter the discharging hole from the housing and seal the discharging hole.

5. The drum mixer of claim 4, wherein the connection assembly comprises a stop cover, a stop block arranged in the stop cover, a connecting disc fixedly connected with the stop cover, a connecting block fixedly connected with the connecting disc, a second bearing and a bearing cover, one end of the piston rod is in threaded connection with the stop block, one end of the piston rod is provided with a stop nut, the stop nut abuts against one end of the stop block, one end of the stop cover towards the discharge port is fixedly connected with the connecting disc, the connecting disc is fixedly connected with the connecting block, a second bearing is sleeved on the connecting block, one end of the second bearing towards the discharge port is provided with a stop sheet, the stop sheet is embedded on the connecting block, and the connecting block and the second bearing are arranged in the bearing cover.

6. The mixing drum of claim 5, wherein the seal cover assembly comprises a seal cover, a connecting seat disposed on the seal cover, and a sealing gasket disposed on the connecting seat, and the connecting seat is fixedly connected to the bearing cover.

7. The drum mixer according to claim 1, wherein the feeding device comprises a feeding pipe, a second connecting flange, a fixing flange arranged at the feeding port, and a third bearing, the fixing flange is internally provided with a first sealing ring, the feeding pipe is fixedly connected with the second connecting flange, one end of the third bearing is fixedly connected with the second connecting flange, the other end of the third bearing is fixedly connected with the fixing flange, one end of the fixing flange is provided with a groove, a labyrinth mounting plate is arranged in the groove, the labyrinth mounting plate is fixedly connected with the fixing flange, and a labyrinth sealing ring is arranged on the labyrinth mounting plate.

8. The drum mixer according to claim 4, wherein the discharge hole is a tapered hole having a diameter gradually increasing from the mounting seat to the discharge portion.

9. The drum mixer according to claim 6, wherein said sealing gasket is fixedly provided with a gland.

10. A drum mixer according to claim 1, wherein one side of the drum and one end of the drum are provided with air hammers.