CN114632452A

CN114632452A - Double-cone mixer

Info

Publication number: CN114632452A
Application number: CN202210025842.7A
Authority: CN
Inventors: 曹建明
Original assignee: Zhengzhou Gubaojia Biotechnology Co ltd
Current assignee: Zhengzhou Gubaojia Biotechnology Co ltd
Priority date: 2022-01-11
Filing date: 2022-01-11
Publication date: 2022-06-17

Abstract

The invention discloses a double-cone mixer, which comprises mounting seats and a tank body, wherein the two mounting seats are connected through a connecting plate, a discharge hole is formed in the bottom end of the tank body, a detachable sealing cover is connected to the discharge hole in a threaded manner, the tank body is positioned between the two mounting seats, two sides of the tank body are rotatably connected with the corresponding mounting seats through connecting shafts, a driving mechanism capable of driving the connecting shaft on one side of the tank body to rotate is arranged on the mounting seat on one side of the tank body, the connecting shaft on one side, far away from the driving mechanism, of the tank body penetrates through the adjacent mounting seats, a connecting hole communicated with the inside of the tank body is formed in one end, far away from the tank body, of the tank body, and a material feeding mechanism convenient to convey materials into the tank body is arranged between the connecting hole and the tank body. The material mixing device has the advantages of convenience in feeding and high material mixing speed, meanwhile, the requirement on workers is low during feeding, the workers can convey materials into the tank body without being in a high position, and the material mixing device is safer.

Description

Double-cone mixer

Technical Field

The invention relates to the technical field of mixers, in particular to a double-cone mixer.

Background

A double cone mixer (double cone mixer) refers to a mixing device that mixes various powders uniformly by rotating a tank. The double-cone type mixer is a mechanical device which feeds powder or granular materials into a double-cone container through vacuum conveying or manual feeding, and the materials are subjected to complex impact motion in the container along with the continuous rotation of the container to achieve uniform mixing.

The existing double-cone mixer generally pumps a tank body of the mixer to a vacuum state before feeding, and then materials to be mixed are added into the tank body from a feeding port of the tank body by using pressure difference.

The prior art has the following defects that the feeding hole of the tank body is required to be kept upward when the material is fed into the tank body, so that a worker is required to connect a material output pipe to the feeding end of the tank body through climbing tools such as a lifting platform and the like when the material is fed, the feeding requirement is high, and the worker is required to be in a high position when the worker is connected with the material output pipe, so that certain danger is caused.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a double-cone mixer which has the advantages of convenience in feeding and high mixing speed, and meanwhile, the requirement on workers during feeding is low, and the workers can convey materials into a tank body without being in a high position.

The purpose of the invention is realized by the following technical scheme: the utility model provides a bipyramid blendor, including the mount pad and jar body, the mount pad is equipped with two, link to each other through the connecting plate between two mount pads, the bottom of the jar body is provided with the discharge gate, discharge gate department threaded connection has detachable closing cap, the jar body is located between two mount pads, and its both sides all rotate with the mount pad that corresponds through the connecting axle and are connected, be equipped with on the mount pad of jar body one side and drive this side connecting axle pivoted actuating mechanism, the mount pad that closes on is run through to one side connecting axle that keeps away from actuating mechanism on the jar body, and its one end of keeping away from the jar body is seted up with the communicating connecting hole of jar internal portion, be equipped with between connecting hole and the jar body and be convenient for to the jar body in carry material feed mechanism.

A further technical scheme is that the feeding mechanism comprises a feeding pipe, a feeding bent pipe and a connecting flange plate, the feeding pipe is parallel to the axial direction of the connecting shaft, the feeding bent pipe is arranged in the tank body, the feeding bent pipe is fixed on the side wall of the tank body through a fixed connecting block in the tank body, one end of the feeding bent pipe extends to the top of the tank body, the end port faces towards the material sealing cover, one end, away from the top of the tank body, of the feeding bent pipe extends to the connecting hole, the outer side pipe wall of the feeding bent pipe is abutted to the hole wall of the connecting hole, the feeding pipe is installed in the connecting hole through a bearing, one end, close to the tank body, of the feeding bent pipe extends to the feeding bent pipe and is communicated with the feeding bent pipe, the flange plate is installed at one end, away from the tank body, and a sealing cover is installed at one side, away from the feeding pipe.

A driving groove is arranged on the mounting seat on one side of the tank body far away from the feeding pipe, a bearing plate parallel to the connecting plate is arranged in the driving groove, the bearing plate divides the driving groove into a driving cavity and a steering cavity, the driving cavity is positioned below the steering cavity, a linkage hole is arranged on the bearing plate, the notch of the driving groove faces the tank body, a transmission groove is arranged on one side of the mounting seat far away from the driving groove, the transmission groove is positioned above the driving groove, a transmission hole communicated with the driving cavity is arranged on one side of the transmission groove close to the driving groove, the driving mechanism comprises a driving motor, a steering speed-reducing motor, a first transmission belt and a transmission assembly, the driving motor is arranged in the driving cavity, the steering speed-reducing motor is arranged in the steering cavity, a driving wheel is fixed on an output shaft of the driving motor, and a first steering wheel and a second steering wheel are respectively fixed on two output shafts of the steering speed-reducing motor, the driving wheel, the first steering wheel and the second steering wheel are vertically arranged and are parallel to each other, the driving wheel, the first steering wheel and the linkage hole vertically correspond to each other, the first transmission belt penetrates through the linkage hole and is sleeved on the driving wheel and the first steering wheel, the second steering wheel vertically corresponds to the transmission hole, the transmission assembly is arranged in the transmission groove, and the transmission assembly is connected with the second steering wheel belt of the steering speed reducing motor through the second transmission belt.

A further technical scheme is, transmission assembly includes fixed block, drive wheel and transmission shaft, and the fixed block is fixed the transmission groove is close to on the cell wall of one side of drive groove, and be located one side that the transmission groove tank bottom was kept away from to the transmission hole, the transmission shaft is fixed in one side that the fixed block is close to the transmission groove tank bottom, and the drive wheel suit is on the transmission shaft to vertical corresponding with the transmission hole, the second drive belt passes the transmission hole and the cover is established on drive wheel and second directive wheel, keeps away from a connecting axle of inlet pipe, its one end of keeping away from jar body extend to the transmission groove in with the transmission shaft keep away from the one end fixed connection of fixed block.

Still further technical scheme is, be provided with supplementary rabbling mechanism in the jar body, supplementary rabbling mechanism includes (mixing) shaft, stirring horizontal pole and connecting block, and the connecting block is fixed the feeding return bend is kept away from one side of inlet pipe, the connecting block with the coaxial setting of connecting axle, the one side of keeping away from the inlet pipe at the connecting block is fixed to stirring horizontal pole level, and the one end that the connecting block was kept away from to the stirring horizontal pole extends to relative internal wall of jar on to with internal wall fixed connection of jar, the (mixing) shaft is equipped with many, many (mixing) shafts evenly distributed on the stirring horizontal pole.

According to a further technical scheme, a sealing bearing is arranged between the feeding bent pipe and the feeding pipe, the sealing bearing is sleeved on the outer pipe wall of the feeding pipe, and the outer side ring wall of the sealing bearing is fixedly connected with the inner pipe wall of the feeding bent pipe.

The invention has the following advantages:

(1) the feeding mechanism is arranged on the side surface of the tank body, so that a feeding hole is not reserved at the top of the tank body, and workers do not need to stand at a high position to convey materials to the tank body, so that the feeding to the tank body is facilitated, and meanwhile, the danger of the workers during feeding is reduced;

(2) when the tank body rotates, the feeding bent pipe can synchronously move along with the tank body, the feeding pipe can not rotate when the connecting shaft rotates, and when the tank body is still in a negative pressure state, a worker can connect a flange connecting plate at the end part of the feeding pipe to the material conveying pipe, so that the tank body can be turned and fed at the same time;

(3) the driving motor can drive a first steering wheel of the steering speed reducing motor to rotate through a first driving belt, so that a second steering wheel can rotate, the second steering wheel can drive a driving wheel to rotate through a second driving belt, the driving wheel can drive an adjacent connecting shaft to rotate through a driving shaft, the connecting shaft can drive the tank body to turn over between two mounting seats, and mixing of materials is realized;

(4) the sealed bearing between the feeding pipe and the feeding bent pipe can ensure that the connection between the feeding pipe and the feeding bent pipe is more stable.

Drawings

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

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is an enlarged schematic view of a portion a of fig. 2.

In the figure, 1, a mounting seat; 11. a connecting plate; 2. a tank body; 21. a discharge port; 22. sealing the material cover; 3. a connecting shaft; 12. a drive slot; 13. a bearing plate; 121. a drive chamber; 122. a steering cavity; 14. a transmission groove; 4. a drive mechanism; 41. a drive motor; 42. a steering gear motor; 43. a first drive belt; 44. a transmission assembly; 411. a drive wheel; 421. a first steering wheel; 422. a second steering wheel; 5. a second belt; 441. a fixed block; 442. a driving wheel; 443. a drive shaft; 31. connecting holes; 6. a feeding mechanism; 61. a feed pipe; 62. a feeding bent pipe; 63. connecting a flange plate; 621. fixing a connecting block; 71. sealing the bearing; 72. a sealing cover; 8. an auxiliary stirring mechanism; 81. a stirring shaft; 82. a stirring cross bar; 83. and (4) connecting the blocks.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that the products of the present invention conventionally lay out when in use, or orientations or positional relationships that are conventionally understood by those skilled in the art, which are merely for convenience of describing the present invention and simplifying the description, but do 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

Referring to fig. 1-4, a double-cone mixer comprises two mounting seats 1 and two tank bodies 2, wherein the two mounting seats 1 are connected through a connecting plate 11. Discharge gate 21 has been seted up to the bottom of jar body 2, and discharge gate 21 department has detachable closing cap 22 through going out feed cylinder threaded connection. The tank body 2 is positioned between the two mounting seats 1, the two sides of the tank body 2 are both fixed with connecting shafts 3, the connecting shafts 3 on the two sides of the tank body 2 are coaxially arranged, and the two connecting shafts 3 are rotatably connected with the mounting seats 1 corresponding to one side through bearings.

The mounting seat 1 on one side of the tank body 2 is provided with a driving groove 12, and the notch of the driving groove 12 faces the tank body 2. The driving groove 12 is provided with a supporting plate 12 parallel to the connecting plate 11, the supporting plate 12 divides the driving groove 12 into a driving cavity 121 and a steering cavity 122, the driving cavity 121 is located below the steering cavity 122, and the supporting plate 12 is provided with a linkage hole for communicating the driving cavity 121 and the steering cavity 122. The side of the mounting base 1, which is provided with the driving groove 12 and is far away from the driving groove 12, is provided with a transmission groove 14, the transmission groove 14 is positioned above the driving groove 12, and a transmission hole communicated with the driving cavity 121 is arranged on the groove wall of the side, which is close to the driving groove 12, of the transmission groove 14.

The mounting base 1 provided with the driving groove 12 is provided with a driving mechanism 4 capable of driving the connecting shaft 3 to rotate, and the driving mechanism 4 comprises a driving motor 41, a steering and speed reducing motor 42, a first transmission belt 43 and a transmission assembly 44. The driving motor 41 is installed in the driving chamber 121, and the steering reduction motor 42 is installed in the steering chamber 122. A driving wheel 411 is fixed to an output shaft of the driving motor 41, and a first steering wheel 421 and a second steering wheel 422 are fixed to two output shafts of the steering reduction motor 42, respectively. The driving wheel 411, the first steering wheel 421 and the second steering wheel 422 are all vertically disposed and the driving wheel 411 and the first steering wheel 421 are parallel to each other. The driving wheel 411, the first steering wheel 421 and the linkage hole vertically correspond to each other, the second steering wheel 422 and the transmission hole vertically correspond to each other, and the first transmission belt 43 penetrates through the linkage hole and is sleeved on the driving wheel 411 and the first steering wheel 421.

The transmission assembly 44 is disposed in the transmission groove 14, and the transmission assembly 44 is connected with the second steering wheel 422 of the steering speed reducing motor 42 through a second transmission belt. The transmission assembly 44 includes a fixing block 441, a transmission wheel 442, and a transmission shaft 443. The fixing block 441 is fixed on the groove wall of the transmission groove 14 at the side close to the driving groove 12 and is positioned at the side of the transmission hole far from the groove bottom of the transmission groove 14. The transmission shaft 443 is fixed on one side of the fixed block 441 close to the bottom of the transmission groove 14, and the transmission wheel 442 is sleeved on the transmission shaft 443 and vertically corresponds to the transmission hole. The second belt 5 passes through the transmission hole and is fitted over the transmission wheel 442 and the second steering wheel 422. One end of the connecting shaft 3 on the mounting seat 1 where the driving groove 12 is located extends into the transmission groove 14 and is fixedly connected with one end of the transmission shaft 443 away from the fixed block 441.

The connecting shaft 3 on one side of the tank body 2 far away from the driving mechanism 4 penetrates through the adjacent mounting seat 1, and one end of the connecting shaft far away from the tank body 2 is provided with a connecting hole 31 communicated with the inside of the tank body 2. A feeding mechanism 6 which is convenient for conveying materials into the tank body 2 is arranged between the connecting hole 31 and the tank body 2. The feeding mechanism 6 comprises a feeding pipe 61, a feeding elbow 62 and a connecting flange 63. The feed pipe 61 is parallel to the axial direction of the connecting shaft 3. The feed elbow 62 is arranged in the tank 2, and the feed elbow 62 is fixed on the side wall of the tank 2 by a fixed connecting block 621 in the tank 2. One end of the feed elbow 62 extends to the top of the tank 2 and the end port faces the closure cap 22. The end of the feed elbow 62 away from the top of the tank 2 extends into the connecting hole 31 and the outer wall of the feed elbow abuts against the wall of the connecting hole 31. The feed pipe 61 is bearing-mounted in the connection hole 31, and its end near the tank 2 extends into the feed elbow 62 to communicate with the feed elbow 62.

A sealing bearing 71 is arranged between the feeding bent pipe 62 and the feeding pipe 61, the sealing bearing 71 is sleeved on the outer pipe wall of the feeding pipe 61, the outer side ring wall of the sealing bearing 71 is fixedly connected with the inner pipe wall of the feeding bent pipe 62 through a connecting flange 63, the connecting flange 63 is arranged at one end of the feeding pipe 61, which is far away from the tank body 2, and a sealing cover 72 is arranged at one side of the sealing bearing, which is far away from the feeding pipe 61.

An auxiliary stirring mechanism 8 is arranged in the tank body 2, and the auxiliary stirring mechanism 8 comprises a stirring shaft 81, a stirring cross rod 82 and a connecting block 83. The connecting block 83 is fixed on one side of the feeding elbow 62 far away from the feeding pipe 61, and the connecting block 83 is coaxially arranged with the connecting shaft 3. The stirring cross rod 82 is horizontally fixed on one side of the connecting block 83 far away from the feeding pipe 61, and one end of the stirring cross rod 82 far away from the connecting block 83 extends to the inner wall of the tank body 2 opposite to the inner wall of the tank body 2 and is fixedly connected with the inner wall of the tank body 2. The stirring shaft 81 is fixed on the side wall of the stirring cross rod 82, and the axial direction of the stirring shaft 81 is vertical to the axial direction of the stirring cross rod 82. The stirring shafts 81 are provided with a plurality of stirring shafts 81, and the stirring shafts 81 are uniformly distributed on the stirring cross rod 82 along the axial direction thereof.

The implementation principle of the invention is as follows: when a worker feeds materials into the tank body 2, firstly, a vacuumized pipe is connected to the connecting flange plate 63 to realize the vacuumization operation of the tank body 2, then, a material output pipe is connected to the connecting flange plate 63, the materials are sent into the tank body 2 by using pressure difference, when the vacuumized pipe or the material conveying pipe is connected, the worker only needs to stand on one side of the mounting seat 1 without using a climbing tool to lift to the top of the tank body 2, the work of the worker is facilitated, and meanwhile, the danger of conveying the materials is reduced;

in the process of conveying materials to the tank body 2, namely when the tank body 2 is still in a negative pressure state, a worker can start the driving motor 41, the driving motor 41 drives the steering speed-reducing motor 42 to act through the first driving belt 43, so as to drive the driving wheel 442 to rotate, so as to drive the tank body 2 to rotate through the connecting shaft 3, because the feeding pipe 61 is connected with an external material output pipe through the connecting flange 63, the feeding pipe 61 does not rotate, and the feeding elbow pipe 62 which is rotatably connected with the feeding pipe can rotate along with the rotation of the tank body 2, meanwhile, because the tank body 2 is in a negative pressure state, the external material output pipe can still convey the materials to the feeding elbow pipe 62 through the feeding pipe 61, and when the feeding elbow pipe 62 rotates along with the tank body 2, the materials also enter the tank body 2, so that the feeding and the mixing of the tank body 2 are synchronously carried out, the mixing efficiency is higher, and at the same time, stirring shaft 81 in the jar body 2 also rotates thereupon, can further accelerate the mixture of material, further promotes compounding efficiency.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a bipyramid blendor, includes mount pad (1) and jar body (2), its characterized in that: two mounting seats (1) are arranged, the two mounting seats (1) are connected through a connecting plate (11), a discharge hole (21) is arranged at the bottom end of the tank body (2), a detachable sealing cover (22) is connected at the discharge hole (21) through a thread, the tank body (2) is positioned between the two mounting seats (1), and both sides of the tank body are rotatably connected with the corresponding mounting seats (1) through connecting shafts (3), a driving mechanism (4) capable of driving the connecting shaft (3) at one side of the tank body (2) to rotate is arranged on the mounting seat (1), the connecting shaft (3) at one side of the tank body (2) far away from the driving mechanism (4) penetrates through the adjacent mounting seat (1), and one end of the connecting rod, which is far away from the tank body (2), is provided with a connecting hole (31) communicated with the inside of the tank body (2), and a feeding mechanism (6) which is convenient for conveying materials into the tank body (2) is arranged between the connecting hole (31) and the tank body (2).

2. A double-cone mixer according to claim 1, characterised in that: the feeding mechanism (6) comprises a feeding pipe (61), a feeding bent pipe (62) and a connecting flange plate (63), the feeding pipe (61) is parallel to the axial direction of the connecting shaft (3), the feeding bent pipe (62) is arranged in the tank body (2), the feeding bent pipe (62) is fixed on the side wall of the tank body (2) through a fixed connecting block (621) in the tank body (2), one end of the feeding bent pipe extends to the top of the tank body (2) and the port of the end faces the material sealing cover (22), one end, far away from the top of the tank body (2), of the feeding bent pipe (62) extends into the connecting hole (31) and the outer side pipe wall of the connecting hole (31) is abutted against the hole wall of the connecting hole (31), the feeding pipe (61) is installed in the connecting hole (31) through a bearing, one end, close to the tank body (2), of the feeding bent pipe extends into the feeding bent pipe (62) and is communicated with the feeding bent pipe (62), and the flange is installed at one end, far away from the tank body (2), of the feeding pipe (61), and a sealing cover (72) is arranged on one side of the feeding pipe (61).

3. A double-cone mixer according to claim 2, characterised in that: the tank body (2) is far away from the side of the feeding pipe (61), the mounting seat (1) is provided with a driving groove (12), the driving groove (12) is internally provided with a bearing plate (13) parallel to the connecting plate (11), the bearing plate (13) divides the driving groove (12) into a driving cavity (121) and a steering cavity (122), the driving cavity (121) is positioned below the steering cavity (122), the bearing plate (13) is provided with a linkage hole, a notch of the driving groove (12) faces the tank body (2), one side of the mounting seat (1) far away from the driving groove (12) is provided with a transmission groove (14), the transmission groove (14) is positioned above the driving groove (12), and one side of the mounting seat (1) close to the driving groove (12) is provided with a transmission hole communicated with the driving cavity (121), the driving mechanism (4) comprises a driving motor (41), a steering speed reducing motor (42), a first transmission belt (43) and a transmission assembly (44), driving motor (41) is installed in drive chamber (121), turn to gear motor (42) and install in turning to chamber (122), be fixed with drive wheel (411) on the output shaft of driving motor (41), turn to gear motor (42) and be fixed with first directive wheel (421) and second directive wheel (422) on two output shafts respectively, drive wheel (411), first directive wheel (421) and second directive wheel (422) are vertical setting and drive wheel (411) and first directive wheel (421) are parallel to each other, drive wheel (411), first directive wheel (421) and interlock hole vertical correspondence, first transmission belt (43) wear to establish in the interlock hole and overlap and establish on drive wheel (411) and first directive wheel (421), second directive wheel (422) and the vertical correspondence of transmission hole, transmission assembly (44) set up in transmission groove (14), transmission assembly (44) are connected with second directive wheel (422) that turns to gear motor (42) through second transmission belt (5).

4. A double-cone mixer according to claim 3 wherein: the transmission assembly (44) comprises a fixed block (441), a transmission wheel (442) and a transmission shaft (443), the fixed block (441) is fixed on a groove wall of one side, close to the driving groove (12), of the transmission groove (14), the transmission hole is located on one side, far away from the bottom of the transmission groove (14), the transmission shaft (443) is fixed on one side, close to the bottom of the transmission groove (14), of the fixed block (441), the transmission wheel (442) is sleeved on the transmission shaft (443) and vertically corresponds to the transmission hole, the second transmission belt (5) penetrates through the transmission hole and is sleeved on the transmission wheel (442) and the second steering wheel (422), the connection shaft (3) far away from the feeding pipe (61) is connected with one end, far away from the tank body (2), of the connection shaft extends into the transmission groove (14) and is fixedly connected with one end, far away from the fixed block (441), of the transmission shaft (443).

5. A double-cone mixer according to claim 2, characterised in that: be provided with supplementary rabbling mechanism (8) in jar body (2), supplementary rabbling mechanism (8) include (mixing) shaft (81), stirring horizontal pole (82) and connecting block (83), and connecting block (83) are fixed feeding return bend (62) are kept away from one side of inlet pipe (61), connecting block (83) with the coaxial setting of connecting axle (3), stirring horizontal pole (82) horizontal fixation is in one side of keeping away from inlet pipe (61) in connecting block (83), and the one end that connecting block (83) were kept away from in stirring horizontal pole (82) extends to on the relative jar body (2) inner wall to with jar body (2) inner wall fixed connection, (mixing) shaft (81) are equipped with many, (many) mixing shaft (81) evenly distributed on stirring horizontal pole (82).

6. A double-cone mixer according to claim 2, characterised in that: a sealing bearing (71) is arranged between the feeding bent pipe (62) and the feeding pipe (61), the sealing bearing (71) is sleeved on the outer pipe wall of the feeding pipe (61), and the outer side ring wall of the sealing bearing is fixedly connected with the inner pipe wall of the feeding bent pipe (62).