CN112896251A

CN112896251A - Hot pitch transports strorage device for municipal administration highway construction

Info

Publication number: CN112896251A
Application number: CN202110059604.3A
Authority: CN
Inventors: 岳丹
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2021-06-04

Abstract

The invention provides a hot asphalt conveying and storing device for municipal road construction, which relates to the technical field of road construction equipment and aims to solve the problems that although a stirring mechanism is additionally arranged in the use process of the existing asphalt conveying and storing device, the stirring mode is single, so that the stirring track is fixed, dead corners are easily generated in a tank, and the stirring is not fully performed, and meanwhile, when discharging, the materials are discharged by means of self gravity, and the materials are easily accumulated and piled, and comprises a conveying bottom support; a cuboid storage box is hinged to the edge of the left end of the plane of the top of the conveying bottom support; the middle part of the storage box is vertically and fixedly provided with a stirring mechanism, and the lower end of the stirring mechanism is arranged in the inner cavity of the storage box. According to the invention, the stirring shaft is vertically and rotatably arranged in the inner cavity of the storage box, and the regular tetrahedral scraping block is fixedly arranged at the tail end of the third stirring paddle, so that the stirring mechanism can stir and mix the asphalt in the storage box in multiple layers, and solidification is avoided.

Description

Hot pitch transports strorage device for municipal administration highway construction

Technical Field

The invention relates to the technical field of highway construction equipment, in particular to a hot asphalt conveying and storing device for municipal highway construction.

Background

The asphalt is a black-brown complex mixture composed of hydrocarbons with different molecular weights and nonmetal derivatives thereof, is one of high-viscosity organic liquids, is in a liquid state, has a black surface, and is soluble in carbon disulfide. Asphalt is a waterproof, moistureproof and anticorrosive organic cementing material. The asphalt can be mainly divided into coal tar asphalt, petroleum asphalt and natural asphalt: among them, coal tar pitch is a by-product of coking. Petroleum pitch is the residue of crude oil distillation. Natural bitumen is stored underground, and some forms a mineral layer or is accumulated on the surface of the crust. The asphalt is mainly used in the industries of paint, plastics, rubber and the like and pavement and the like.

At present in highway construction, hot pitch need place the storage tank in transport the construction point, transport strorage device with hot pitch as in patent application CN201710893207.X, including row's pitch case, discharging pipe and storage pitch case, store up pitch case setting inside the device shell, the inside heat preservation that is equipped with of device shell stores up the pitch case and is equipped with the zone of heating on the inner wall all around, stores up pitch incasement portion and is equipped with the heating mobile jib, is equipped with inferior heating rod on the heating mobile jib body, arrange pitch case and store up and be equipped with the interlayer between the pitch case, interlayer intermediate position department is equipped with electromagnetic switch, arranges pitch bottom of the case portion and is equipped with the flood dragon, the discharging pipe sets up on row pitch bottom of the case portion right side. The hot asphalt conveying and storing device for highway construction disclosed by the invention realizes long-distance asphalt storage and transportation, is comprehensive in heating and heat preservation, effectively reduces the influence of asphalt on quality and practical performance due to temperature reduction, is quick in discharging and high in efficiency, and solves the problems that a discharging pipe is quick in cooling and easy to block due to the fact that the discharging pipe is directly communicated with the outside due to arrangement.

Although the stirring mechanism is also added to the existing asphalt conveying and storing device in the using process, the stirring mode is single, so that the stirring track is fixed, dead corners are easily generated in the tank, the problem of insufficient stirring is solved, and meanwhile, when discharging, the problem of accumulated material stacking is easily caused by discharging materials by self gravity.

In view of the above, the present invention provides a hot asphalt conveying and storing device for municipal highway construction, which is developed and improved in view of the existing structure and defects, so as to achieve the purpose of higher practical value.

Disclosure of Invention

In order to solve the technical problems, the invention provides a hot asphalt conveying and storing device for municipal road construction, which aims to solve the problems that the stirring track is fixed and dead angles are easily generated in a tank and the stirring is not sufficient due to the fact that a stirring mechanism is additionally arranged in the existing asphalt conveying and storing device in the using process, and meanwhile, the materials are discharged by means of self gravity during discharging, and the materials are easily accumulated and piled.

The invention relates to a hot asphalt conveying and storing device for municipal road construction, which has the purpose and the effect achieved by the following specific technical means:

a hot asphalt conveying and storing device for municipal highway construction comprises a conveying bottom support; a cuboid storage box is hinged to the edge of the left end of the plane of the top of the conveying bottom support; the middle part of the storage box is vertically and fixedly provided with a stirring mechanism, and the lower end of the stirring mechanism is arranged in the inner cavity of the storage box; heating plates are fixedly arranged in the left end and the right end inclined side walls of the storage box, and the inner ends of the heating plates are butted with the side walls of the inner cavity of the storage box; an angle adjusting mechanism is transversely and fixedly arranged in the middle of the right end of the plane at the top of the conveying bottom support, and the left end of the angle adjusting mechanism is tangent to the edge of the bottom of the right end of the storage box; and a discharging mechanism is longitudinally and fixedly arranged at the edge of the left end of the plane at the bottom of the inner cavity of the storage box.

Further, it includes cardboard and spout to transport the collet, transport the planar middle part in collet top and transversely set up the spout of rectangle form, and angle adjustment mechanism then arranges the right-hand member of spout in, transports collet front end lateral wall and rear end lateral wall middle part and leans on the right side department respectively vertical cardboard that upwards fixed mounting has the rectangle form, and the inside wall of its cardboard is tangent with the lateral wall of depositing the case.

Further, deposit case and bag and include hinge, charge door and hinge axle seat, deposit the vertical rotation of left end bottom edge department of case and install the hinge, the middle part of its hinge passes through hinge axle seat fixed mounting in the lateral wall of chute bottom, deposits the case top and left and right sides both ends and offer the wide feed inlet of lower extreme narrow of upper end respectively.

Further, rabbling mechanism includes (mixing) shaft, first stirring rake, second stirring rake and third stirring rake, fixed mounting has the motor on the part that the rabbling mechanism was in to deposit the case top, and the lower extreme of motor passes through shaft coupling fixedly connected with (mixing) shaft, and its (mixing) shaft vertical rotation is installed and is being deposited in the incasement chamber, the middle part fixed mounting of (mixing) shaft has the first stirring rake of the umbrella stand structure of back taper, and its first stirring rake has eight to scrape the pole and constitutes, and the lower extreme fixed mounting of (mixing) shaft has the second stirring rake of flabellum form, and the upper end position department fixed mounting of (mixing) shaft will have the third stirring rake of umbelliform, and the lower extreme of its third stirring rake is connected with the outer end of first stirring rake border is fixed, and the terminal of third stirring rake then fixed mounting has the piece of scraping of regular body form.

Furthermore, the angle adjusting mechanism comprises an electric cylinder and an adjusting block, the electric cylinder is vertically and fixedly installed in the middle of the left end of the angle adjusting mechanism, the wedge-shaped adjusting block is fixedly installed at the left end of the electric cylinder, and the inclined surface of the adjusting block is tangent to the edge of the bottom of the right end of the storage box.

Further, discharge mechanism includes discharging pipe, row material hose, ejection of compact axle and ejection of compact screw, discharge mechanism's rear end fixed mounting has the motor, and the front end of motor is connected with the ejection of compact axle of vertically installing in depositing the case through the shaft coupling, the both ends of ejection of compact axle then respectively through bearing ring with lay the discharging pipe fixed connection of depositing incasement chamber bottom, the discharging pipe is located the first half of part of depositing the case and is the opening column structure, and lie in and deposit the outside part of case then be totally closed tubular structure, and the outer end fixed connection of discharging pipe has the row material hose of corrugate, the epaxial fixed mounting of ejection of compact screw, the outer end of its ejection of compact screw is tangent with the inner wall of discharging pipe.

Compared with the prior art, the invention has the following beneficial effects:

because the vertical rotation of (mixing) shaft is installed in depositing the incasement chamber, the middle part fixed mounting of (mixing) shaft has the first stirring rake of the umbrella stand structure of back taper, its first stirring rake has eight to scrape the pole and constitutes, the lower extreme fixed mounting of (mixing) shaft has the second stirring rake of flabellum form, the upper end position department fixed mounting of (mixing) shaft will have the third stirring rake of umbelliform, the lower extreme of its third stirring rake is connected with the outer end border fixed connection of first stirring rake, and the end of third stirring rake then fixed mounting has the piece of scraping of regular tetrahedron form, can make the rabbling mechanism will deposit the pitch in the case and carry out multi-level stirring and mix, avoid solidifying.

Because the middle part of the left end of the angle adjusting mechanism is vertically and fixedly provided with the electric cylinder, the left end of the electric cylinder is fixedly provided with the wedge-shaped adjusting block, the inclined plane of the adjusting block is tangent with the edge of the bottom of the right end of the storage box, and the adjusting block can be pushed to move by the electric cylinder, so that the storage box is extruded and turned upwards.

Because discharge mechanism's rear end fixed mounting has the motor, and the front end of motor is connected with the ejection of compact axle of vertically installing in depositing the case through the shaft coupling, the both ends of ejection of compact axle then respectively through bearing ring with lay the discharging pipe fixed connection of depositing incasement chamber bottom, the discharging pipe is located the first part of the part of depositing the case and is the opening column structure, and the part that is located to deposit the case outside is totally closed tubular structure then, and the outer end fixed connection of discharging pipe has the row material hose of corrugate, the epaxial fixed mounting of ejection of compact screw of unloading, the outer end of its ejection of compact screw is tangent with the inner wall of discharging pipe, the rotation of accessible ejection of compact screw makes pitch orderly discharge, and can mutually support with angle adjustment mechanism, make the more thorough of pitch discharge in depositing the case.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a front right upper axial view of the present invention.

Fig. 2 is a schematic diagram of the left rear upper axial view structure of the invention.

Fig. 3 is a left side view of the present invention.

Fig. 4 is a schematic view of the half-section axial structure of the present invention.

Fig. 5 is a schematic diagram of an enlarged portion a of fig. 4 according to the present invention.

FIG. 6 is an axial view of the present invention with the half section partially separated from the conveyor shoe.

Fig. 7 is a front view of the present invention showing a half-section state and a state of separating the conveying shoe portion.

FIG. 8 is a schematic axial view of a portion of the stirring mechanism of the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. conveying the bottom support; 101. clamping a plate; 102. a chute; 2. a storage box; 201. a hinge shaft; 202. a feed inlet; 203. a hinge shaft seat; 3. a stirring mechanism; 301. a stirring shaft; 302. a first stirring paddle; 303. a second stirring paddle; 304. a third stirring paddle; 4. an angle adjusting mechanism; 401. an electric cylinder; 402. an adjusting block; 5. a discharging mechanism; 501. a discharge pipe; 502. a discharge hose; 503. discharging the material shaft; 504. a discharging propeller; 6. heating the plate.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in figures 1 to 8:

the invention provides a hot asphalt conveying and storing device for municipal highway construction, which comprises a conveying bottom support 1; a cuboid storage box 2 is hinged at the edge of the left end of the plane at the top of the conveying bottom support 1; the middle part of the storage box 2 is vertically and fixedly provided with a stirring mechanism 3, and the lower end of the stirring mechanism 3 is arranged in the inner cavity of the storage box 2; heating plates 6 are fixedly arranged in the left end and the right end inclined side walls of the storage box 2, and the inner ends of the heating plates 6 are butted with the side walls of the inner cavity of the storage box 2; an angle adjusting mechanism 4 is transversely and fixedly arranged in the middle of the right end of the plane at the top of the conveying bottom support 1, and the left end of the angle adjusting mechanism 4 is tangent to the edge of the bottom of the right end of the storage box 2; a discharging mechanism 5 is longitudinally and fixedly arranged at the edge of the left end of the plane at the bottom of the inner cavity of the storage box 2; the discharging mechanism 5 comprises a discharging pipe 501, a discharging hose 502, a discharging shaft 503 and a discharging screw 504, a motor is fixedly installed at the rear end of the discharging mechanism 5, the front end of the motor is fixedly connected with the discharging shaft 503 which is longitudinally installed in the storage box 2 through a coupler, two ends of the discharging shaft 503 are respectively and fixedly connected with the discharging pipe 501 which is laid at the bottom of the inner cavity of the storage box 2 through bearing rings, the upper half part of the discharging pipe 501 which is positioned in the storage box 2 is of an open structure, the part which is positioned outside the storage box 2 is of a fully-closed tubular structure, the outer end of the discharging pipe 501 is fixedly connected with the corrugated discharging hose 502, the discharging screw 504 is fixedly installed on the discharging shaft 503, the outer end of the discharging screw 504 is tangent to the inner wall of the discharging pipe 501, asphalt can be sequentially discharged through the rotation of the discharging screw 504 and can be matched with the angle, the asphalt in the storage tank 2 is discharged more thoroughly; the stirring mechanism 3 comprises a stirring shaft 301, a first stirring paddle 302, a second stirring paddle 303 and a third stirring paddle 304, a motor is fixedly installed on the uppermost part of the storage box 2 of the stirring mechanism 3, the lower end of the motor is fixedly connected with the stirring shaft 301 through a coupler, the stirring shaft 301 is vertically and rotatably installed in the inner cavity of the storage box 2, the first stirring paddle 302 with an inverted cone-shaped umbrella frame structure is fixedly installed in the middle of the stirring shaft 301, the first stirring paddle 302 is composed of eight scraping rods, the lower end of the stirring shaft 301 is fixedly installed with the second stirring paddle 303 with a fan blade shape, the third stirring paddle 304 with an umbrella shape is fixedly installed at the upper end position of the stirring shaft 301, the lower end of the third stirring paddle 304 is fixedly connected with the outer end edge of the first stirring paddle 302, the tail end of the third stirring paddle 304 is fixedly installed with a scraping block with a regular tetrahedron shape, so that the stirring mechanism 3 can stir and mix asphalt in the storage box 2 in a multi-level manner, and solidification is avoided.

Wherein, it includes cardboard 101 and spout 102 to transport collet 1, transport the planar middle part in collet 1 top and transversely offer the spout 102 of rectangle form, and the right-hand member of spout 102 is then arranged in to angle adjustment mechanism 4, movable part that angle adjustment mechanism 4 then can remove in spout 102, thereby can adjust the inclination of depositing case 2, it leans on the cardboard 101 of the vertical upwards fixed mounting respectively of right department to transport collet 1 front end lateral wall and rear end lateral wall middle part to have the rectangle form, the inside wall of its cardboard 101 is tangent with the lateral wall of depositing case 2, can correct the position through depositing case 2 when counterpointing when depositing case 2.

Wherein, deposit case 2 and include hinge 201, charge door 202 and hinge seat 203, deposit the vertical rotation of left end bottom edge department of case 2 and install hinge 201, the middle part of its hinge 201 passes through hinge seat 203 fixed mounting in spout 102 bottom lateral wall, deposit case 2 top left and right sides both ends and offer the wide narrow charge door 202 of lower extreme in upper end respectively, accessible hinge 201 and hinge seat 203 make deposit case 2 can use left end bottom edge to rotate as the axle center.

Wherein, angle adjustment mechanism 4 includes electric cylinder 401 and adjusting block 402, and the perpendicular fixed mounting in left end middle part of angle adjustment mechanism 4 has electric cylinder 401, and the left end fixed mounting of its electric cylinder 401 has wedge-shaped adjusting block 402, and the inclined plane of adjusting block 402 is tangent with the right-hand member bottom edge department of depositing case 2, and accessible electric cylinder 401 promotes adjusting block 402 and removes to the case 2 is deposited in the extrusion, makes and deposits case 2 upturns.

The specific use mode and function of the embodiment are as follows:

in the using process, a hinge shaft 201 is longitudinally and rotatably installed at the bottom edge of the left end of the storage box 2, the middle part of the hinge shaft 201 is fixedly installed in the side wall of the bottom of the chute 102 through a hinge shaft seat 203, the left and right ends of the top of the storage box 2 are respectively provided with a feeding port 202 with a wide upper end and a narrow lower end, the storage box 2 can rotate by taking the bottom edge of the left end as an axis through the hinge shaft 201 and the hinge shaft seat 203, after the stirring mechanism 3 is started, the part of the stirring mechanism 3 at the uppermost end of the storage box 2 is fixedly provided with a motor, the lower end of the motor is fixedly connected with a stirring shaft 301 through a coupler, the stirring shaft 301 is vertically and rotatably installed in the inner cavity of the storage box 2, the middle part of the stirring shaft 301 is fixedly provided with a first stirring paddle 302 with an inverted cone-shaped umbrella frame structure, the first stirring paddle 302 is composed of eight scraping rods, the, an umbrella-shaped third stirring paddle 304 is fixedly installed at the upper end position of the stirring shaft 301, the lower end of the third stirring paddle 304 is fixedly connected with the outer end edge of the first stirring paddle 302, a regular tetrahedral scraping block is fixedly installed at the tail end of the third stirring paddle 304, so that the stirring mechanism 3 can stir and mix asphalt in multiple layers in the storage box 2 to avoid solidification, a motor is fixedly installed at the rear end of the discharging mechanism 5, the front end of the motor is fixedly connected with a discharging shaft 503 which is longitudinally installed in the storage box 2 through a coupler, two ends of the discharging shaft 503 are respectively and fixedly connected with a discharging pipe 501 which is laid at the bottom of an inner cavity of the storage box 2 through a bearing ring, the upper half part of the discharging pipe 501 which is positioned in the storage box 2 is of an open structure, the part which is positioned outside the storage box 2 is of a fully-closed tubular structure, and a corrugated discharging hose 502 is fixedly connected at the outer end of the discharging pipe 501, discharging shaft 503 is provided with discharging propeller 504, the outer end of discharging propeller 504 is tangent with the inner wall of discharging pipe 501, the rotation of accessible discharging propeller 504 makes pitch discharge in order, and can mutually support with angle adjusting mechanism 4, make the pitch of depositing in case 2 discharge more thoroughly, finally, the perpendicular fixed mounting in left end middle part of angle adjusting mechanism 4 has electric cylinder 401, the left end fixed mounting of its electric cylinder 401 has wedge-shaped adjusting block 402, and the inclined plane of adjusting block 402 is tangent with the right-hand member bottom edge department of depositing case 2, accessible electric cylinder 401 promotes adjusting block 402 and removes, thereby case 2 is deposited in the extrusion, make and deposit case 2 and upwards turn up.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a storage device is transported with hot pitch to municipal administration highway construction which characterized in that: comprises a conveying bottom support (1); a cuboid storage box (2) is hinged to the edge of the left end of the top plane of the conveying bottom support (1); the conveying bottom support (1) comprises a sliding groove (102), the middle of the top plane of the conveying bottom support (1) is transversely provided with a rectangular sliding groove (102), and the angle adjusting mechanism (4) is arranged at the right end of the sliding groove (102); the middle part of the storage box (2) is vertically and fixedly provided with a stirring mechanism (3), and the lower end of the stirring mechanism (3) is arranged in the inner cavity of the storage box (2); heating plates (6) are fixedly arranged in the left end and right end inclined side walls of the storage box (2), and the inner ends of the heating plates (6) are butted with the side walls of the inner cavity of the storage box (2); an angle adjusting mechanism (4) is transversely and fixedly installed in the middle of the right end of the top plane of the conveying bottom support (1), and the left end of the angle adjusting mechanism (4) is tangent to the edge of the bottom of the right end of the storage box (2); and a discharging mechanism (5) is longitudinally and fixedly arranged at the edge of the left end of the bottom plane of the inner cavity of the storage box (2).

2. The apparatus for transporting and storing hot asphalt for town road construction according to claim 1, wherein: transport collet (1) and still include cardboard (101), transport collet (1) front end lateral wall and rear end lateral wall middle part and lean on right department vertical upwards fixed mounting respectively and have cardboard (101) of rectangle form, the inside wall of its cardboard (101) is tangent with the lateral wall of depositing case (2).

3. The apparatus for transporting and storing hot asphalt for town road construction according to claim 1, wherein: deposit case (2) including hinge (201), charge door (202) and hinge seat (203), deposit the vertical rotation of left end bottom edge department of case (2) and install hinge (201), the middle part of its hinge (201) is passed through hinge seat (203) fixed mounting in spout (102) bottom lateral wall, deposits case (2) top left and right sides both ends and has seted up the narrow charge door (202) of upper end wide lower extreme respectively.

4. The apparatus for transporting and storing hot asphalt for town road construction according to claim 1, wherein: rabbling mechanism (3) are including (mixing) shaft (301), first stirring rake (302), second stirring rake (303) and third stirring rake (304), fixed mounting has the motor on the part that rabbling mechanism (3) were in to deposit case (2) the top, and shaft coupling fixedly connected with (mixing) shaft (301) are passed through to the lower extreme of motor, and its (mixing) shaft (301) vertical rotation is installed in depositing case (2) inner chamber, and the lower extreme fixed mounting of (mixing) shaft (301) has second stirring rake (303) of flabellum form, and the upper end position department fixed mounting of (mixing) shaft (301) will have umbelliform third stirring rake (304).

5. The apparatus for transporting and storing hot asphalt for town road construction according to claim 4, wherein: the stirring mechanism (3) comprises a first stirring paddle (302), the middle part of the stirring shaft (301) is fixedly provided with the first stirring paddle (302) of the inverted cone-shaped umbrella stand structure, and the first stirring paddle (302) is provided with eight scraping rods.

6. The apparatus for transporting and storing hot asphalt for town road construction according to claim 4, wherein: the lower end of the third stirring paddle (304) is fixedly connected with the outer end edge of the first stirring paddle (302), and the tail end of the third stirring paddle (304) is fixedly provided with a regular tetrahedral scraping block.

7. The apparatus for transporting and storing hot asphalt for town road construction according to claim 1, wherein: the angle adjusting mechanism (4) comprises an electric cylinder (401) and an adjusting block (402), the electric cylinder (401) is vertically and fixedly mounted in the middle of the left end of the angle adjusting mechanism (4), the wedge-shaped adjusting block (402) is fixedly mounted at the left end of the electric cylinder (401), and the inclined surface of the adjusting block (402) is tangent to the edge of the bottom of the right end of the storage box (2).

8. The apparatus for transporting and storing hot asphalt for town road construction according to claim 1, wherein: the discharging mechanism (5) comprises a discharging pipe (501), a discharging hose (502), a discharging shaft (503) and a discharging propeller (504), a motor is fixedly arranged at the rear end of the discharging mechanism (5), the front end of the motor is fixedly connected with a discharging shaft (503) which is longitudinally arranged in the storage box (2) through a coupling, two ends of the discharging shaft (503) are respectively and fixedly connected with a discharging pipe (501) which is laid at the bottom of the inner cavity of the storage box (2) through bearing rings, the upper half part of the discharging pipe (501) which is positioned in the storage box (2) is of an open structure, the part positioned outside the storage box (2) is of a fully-closed tubular structure, the outer end of the discharge pipe (501) is fixedly connected with a corrugated discharge hose (502), a discharge propeller (504) is fixedly arranged on the discharge shaft (503), the outer end of the discharging propeller (504) is tangent to the inner wall of the discharging pipe (501).