CN109420548B

CN109420548B - Spiral conveying device with dust removal function and crushing equipment

Info

Publication number: CN109420548B
Application number: CN201710760563.4A
Authority: CN
Inventors: 刘长如; 钱月起
Original assignee: Heilongjiang Rubai Technology Co ltd
Current assignee: Heilongjiang Rubai Technology Co ltd
Priority date: 2017-08-30
Filing date: 2017-08-30
Publication date: 2024-03-22
Anticipated expiration: 2037-08-30
Also published as: CN109420548A

Abstract

The invention provides a spiral conveying device with a dust removing function and crushing equipment. The spiral conveying device with the dust removing function comprises a cylinder body, a screw rod arranged in the cylinder body, a dust removing cover and a dust collecting device, wherein at least one section of open section is arranged on the cylinder body along the axial direction, the dust removing cover is arranged on the open section, and a dust collecting pipeline of the dust collecting device is communicated with the inside of the dust removing cover. According to the spiral conveying device, the open section is arranged on the cylinder body, the dust hood is covered on the open section, and dust raised in the material conveying process is absorbed through the dust hood, so that the cleanliness of materials is improved on one hand, the production environment can be prevented from being influenced by overflow of dust on the other hand, the dust hood can be arranged to increase the dust collection space of the dust hood, and the dust collection effect of the dust hood is improved.

Description

Spiral conveying device with dust removal function and crushing equipment

Technical Field

The invention relates to the field of crushers, in particular to a spiral conveying device with a dust removing function and crushing equipment with the spiral conveying device.

Background

Screw conveyor is very common conveying equipment, can be applied to the transportation of granule material, stem class, bush, grass, shell class crushed aggregates, owing to the unavoidable doping of above-mentioned crushed aggregates is with more dust, influences the clean degree of material on the one hand, and on the other hand also overflows easily, seriously influences the production environment. The influence on the production environment is more obvious when the screw conveyor is used for continuously conveying materials which have just undergone processing (such as crushing, threshing and the like) in a production line.

Disclosure of Invention

Accordingly, one of the objectives of the present invention is to provide a screw conveyor and a pulverizing apparatus with dust removal function, which can improve the cleanliness of the conveyed materials and the production environment.

In order to achieve the above purpose, on one hand, the present invention adopts the following technical scheme:

the utility model provides a screw conveyer with dust removal function, includes the barrel and sets up the screw rod in the barrel, still includes dust excluding hood and dust extraction, the barrel is provided with at least one section and opens the section along the axial, the dust excluding hood cover is established open the section, dust extraction's dust absorption pipeline with the inside intercommunication of dust excluding hood.

Preferably, the dust hood is connected with the cylinder and formed as a unitary structure.

Preferably, the width of the cross section of the dust hood gradually increases radially outwardly of the screw.

Preferably, the screw conveyor is arranged obliquely with respect to the horizontal plane such that the conveying direction of the screw conveyor is obliquely upward.

Preferably, the width of the dust hood is gradually increased from bottom to top; and/or, on the same horizontal height, the width of the dust hood gradually decreases along the conveying direction of the spiral conveying device.

Preferably, the top of the dust hood is horizontally arranged.

Preferably, a material blocking structure is arranged in the dust hood and used for preventing materials in the cylinder from being sucked into the dust collection device.

Preferably, the material blocking structure comprises a plurality of dust collection baffles inclined to different directions.

Preferably, the dust collection baffle is arranged on the inner wall of the top and/or the side part of the dust hood.

Preferably, the dust collection baffle is arranged on two sides of the dust collection pipeline in the conveying direction of the spiral conveying device.

Preferably, the plurality of dust suction baffles inclined to different directions include a first dust suction baffle which is located on an upstream side of the dust suction pipe in a feeding direction of the screw conveyor and inclined to a direction approaching an inlet of the dust suction pipe.

Preferably, the plurality of dust suction baffles inclined to different directions further include a second dust suction baffle which is located on a downstream side of the dust suction pipe in a feeding direction of the screw conveyor and inclined to a direction approaching an inlet of the dust suction pipe.

Preferably, in the longitudinal section of the dust hood, the first dust collection baffle and the second dust collection baffle are staggered.

Preferably, the dust collection device comprises a plurality of dust collection pipelines, and the dust collection pipelines are arranged at intervals along the conveying direction of the spiral conveying device.

Preferably, the first dust collection baffle or the plurality of dust collection pipes are arranged on the upstream side of each dust collection pipeline, and/or the second dust collection baffle is arranged on the downstream side of each dust collection pipeline.

Preferably, the cross section of the integral structure formed by the dust hood and the cylinder body is U-shaped.

On the other hand, the invention adopts the following technical scheme:

the utility model provides a crushing equipment, includes the casing, set up in crushing mechanism in the casing and the drive of crushing mechanism rotation, crushing mechanism is used for with the material in the casing is smashed, still includes screw conveyer as above, screw conveyer is used for with in the casing through the kibbling material output of crushing mechanism.

Preferably, the cylinder of the screw conveyor is connected to the housing, and the dust hood and the housing are spaced apart from each other.

Preferably, the cylinder body comprises a connecting section for connecting the dust hood and the shell, and a passage for communicating the shell and the dust hood is formed above the screw in the connecting section.

Preferably, the crushing device is a straw crushing device.

According to the spiral conveying device, the open section is arranged on the cylinder body, the dust hood is covered on the open section, and dust raised in the material conveying process is absorbed through the dust hood, so that the cleanliness of materials is improved on one hand, the production environment can be prevented from being influenced by overflow of dust on the other hand, the dust hood can be arranged to increase the dust collection space of the dust hood, and the dust collection effect of the dust hood is improved.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of embodiments of the present invention with reference to the accompanying drawings, in which:

FIG. 1 illustrates a front view of a comminution apparatus provided in accordance with an embodiment of the present invention;

FIG. 2 illustrates a left side view of a comminution apparatus provided in accordance with an embodiment of the present invention;

FIG. 3 is a schematic view showing the internal structure of the upper part of the casing of the crushing apparatus according to the embodiment of the present invention;

FIG. 4 is a schematic view showing the structure of a pulverizing mechanism according to an embodiment of the present invention;

FIG. 5 shows a front view of a comminution apparatus provided in accordance with an embodiment of the present invention at a feed inlet;

fig. 6 is a schematic view showing the internal structure of the lower part of the housing and the screw conveyor of the crushing apparatus according to the embodiment of the present invention;

FIG. 7 illustrates a top view of a comminution apparatus provided in accordance with an embodiment of the present invention;

fig. 8 is a schematic diagram showing an internal structure of a screw conveyor at a dust hood position according to an embodiment of the present invention;

fig. 9 shows a left side view of a dust hood provided in an embodiment of the invention.

In the figure, 1, a shell; 11. a feed inlet; 12. a volute-like structure; 13. a hood-like structure; 14. a sidewall; 15. a constriction section; 16. a second flared section; 3. a motor; 4. a crushing mechanism; 41. a main shaft; 42. a disc; 43. a shaft lever; 44. a hammer plate; 5. a screen; 6. screw thread steel; 7. a first material blocking structure; 71. a first baffle; 711. a body; 712. a bending part; 8. a second material blocking structure; 81. a second baffle; 811. an inclined section; 82. a door curtain-like structure; 91. a first dust collection pipeline; 911. a horn-like structure; 92. a second dust collection pipeline; 93. a third dust collection pipeline; 10. a belt; 20. a screw conveyor; 201. a cylinder; 2011. a first flared section; 2012. an open section; 2013. a connection section; 2014. a passage; 202. a screw; 203. a dust hood; 204. a third material blocking structure; 2041. a first dust collection baffle; 2042. and a second dust collection baffle.

Detailed Description

The present invention is described below based on embodiments, and it will be understood by those of ordinary skill in the art that the drawings provided herein are for illustrative purposes and that the drawings are not necessarily drawn to scale.

Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, it is the meaning of "including but not limited to".

As used herein, "upper", "lower", "top", "bottom", "vertical" and "horizontal" refer to the orientation of the comminution apparatus in a normal operating condition. The "inside" and "outside" as used herein are the inside of the crushing apparatus on the side closer to the inside of the crushing apparatus and the outside on the side farther from the inside of the crushing apparatus, with respect to the crushing apparatus itself.

The utility model provides a crushing apparatus, this application provides a crushing apparatus's structure is applicable to straw rubbing crusher, can be used to smash granule material (such as corn, maize, sorghum, barley etc.), stalk class (such as corn cob, peanut pole etc.) and bush, grass, shell class material to the inside material that current straw rubbing crusher exists and dust are easy to fly upward from the feed inlet is excessive, seriously influences the problem of production environment, also is applicable to other types rubbing crusher that have above-mentioned problem. As shown in fig. 1 and 3, the crushing apparatus includes a housing 1, a crushing mechanism 4 provided in the housing 1, and a driving device for driving the crushing mechanism 4 to rotate, which may include, for example, a motor 3. The shell 1 is provided with a feed inlet 11, and materials can be fed into the shell 1 through the feed inlet 11, so that the crushing mechanism 4 can crush the materials entering the shell 1. Specifically, as shown in fig. 3 and 4, a preferred embodiment of the pulverizing mechanism 4 includes, for example, a main shaft 41, a plurality of disks 42 sleeved on the main shaft 41 and arranged at intervals in the axial direction, a plurality of shafts 43 penetrating the disks 42, and a hammer plate 44 sleeved on the shafts 43, the disks 42 being fixedly connected to the main shaft 41. The disc 42 is provided with a plurality of mounting holes corresponding to the plurality of shaft rods 43, the shaft rods 43 sequentially pass through the mounting holes on the plurality of disc 42 and form fixed connection with the disc 42, and the number of the shaft rods 43 is not limited, for example, four shaft rods 43 can be uniformly distributed along the circumferential direction as shown in fig. 3. The hammer plate 44 is sleeved on the shaft 43 and forms clearance fit with the shaft 43. To ensure that the axial position of the hammer plates 44 on the shaft 43 is fixed, both sides of each hammer plate 44 are provided with, for example, bushings that fit over the shaft 43. The spindle 41 is connected to a drive shaft of the motor 3, for example by means of a belt 10, so that the motor 3 drives the spindle 41 to rotate, driving the disc 42 and the shaft 43 on the disc 42 to rotate around the spindle 41, and the hammer plate 44 is thrown by inertial force to crush the material entering the housing 1. Of course, any other suitable structural solution of the crushing mechanism 4 known in the art may be used.

As shown in fig. 3, a screen 5 is provided below the hammer plate 44, and the material meeting the crushing standard can fall to the lower portion of the housing 1 through the screen 5. Preferably, the screen 5 is provided with screw steels 6 on both circumferential sides, which screw steels 6 are arranged inside the housing 1 so as to be involved in crushing the material, for example, by assisting in grinding to break down and refine the straw or like forage fibers.

When crushing mechanism 4 smashes the material, rotate to the hammer plate 44 that the upper side was thrown (for example, in fig. 3, the hammer plate 44 of left side is thrown upward at this moment) and can raise the dust in material and the material, under the condition that does not block, material and dust spill over from feed inlet 11 easily, in this application, be provided with first fender material structure 7 in casing 1, first fender material structure 7 is located between feed inlet 11 and crushing mechanism 4 to will block the material and the dust that are raised because of hammer plate 44 is thrown, avoid material and dust to spill through feed inlet 11, improve production environment.

One side of the first material blocking structure 7 is close to the first inner side wall of the shell 1, and a certain interval distance is reserved between the other side and the second inner side wall opposite to the first inner side wall, so that a feeding space of the crushing equipment is formed, and the material and dust are reduced or even prevented from being raised on the premise of not influencing feeding. The first blocking structure 7 is arranged near the position where the hammer plate 44 can lift up the material, for example, in the embodiment shown in fig. 3, the crushing mechanism 4 rotates clockwise in the drawing, and the first blocking structure 7 is arranged on the left side in the drawing.

As the preferred scheme, the main part of first fender material structure 7 sets up for the horizontal plane slope, and the main part that first fender material structure 7 is personally submitted certain contained angle with the level and is set up, and first fender material structure 7 is kept away from one side of the first inside wall of casing 1 and is less than the one side setting that is close to first inside wall, so, on the one hand can improve the effect of stopping to the material that lifts back, on the other hand makes the material that gets into in the casing 1 even fall on first fender material structure 7, also can slide along its inclined upper surface under the action of gravity, avoids the material to form in the top of first fender material structure 7 and piles up. The included angle between the main body part of the first material blocking structure 7 and the horizontal plane is not too large or too small, the blocking effect on the material to be raised is affected by the too large included angle, the material is easy to form and pile up above the first material blocking structure, and the upper surface of the first material blocking structure 7 can be an inclined surface or a smooth curved surface. Preferably, as shown in fig. 3, the body portion of the first retaining structure 7 has an angle α of 35 ° to 45 °, further preferably 41 °, to the horizontal plane.

The first material blocking structure 7 may adopt any structure capable of blocking the material to be lifted, preferably a plate-like structure, and further preferably, as shown in fig. 3, the first material blocking structure 7 includes a first baffle 71, the first baffle 71 forms a main body portion of the first material blocking structure 7, one side of the first baffle 71 is adjacent to a first inner side wall of the housing 1, the other two ends adjacent to the side are connected to the remaining inner side wall of the housing 1, or the side is directly connected to the first inner side wall of the housing 1, the first baffle 71 is disposed obliquely with respect to a horizontal plane, i.e., the first baffle 71 is inclined downward in a direction from the side connected to the housing 1 to the opposite side thereof, thereby preventing the material from piling up above the first baffle 71.

Preferably, a side edge of the first baffle 71, which is far away from the first inner sidewall of the housing 1, is provided with a bending structure that bends downward (including obliquely downward, for example, a direction away from the feed inlet 11), that is, the first baffle 71 includes a body 711 and a bending part 712 at the edge of the body 711, and the setting of the bending structure can further improve the blocking effect on the back-raised material. Too long or too short a length of the bending portion 712 in the longitudinal section affects the blocking effect, preferably the bending portion 712 has a length of one fourth to one sixth, preferably one fifth, of the length of the body 711 in the longitudinal section.

Preferably, the surface of the feed inlet 11 is inclined from top to bottom to the inner side of the crushing device, for example, the surface of the feed inlet 11 is an inclined surface gradually inclined from top to bottom to the inner side, and the inclined surface from top to bottom to the inner side can further reduce the lifting of materials. The angle between the inclined surface and the vertical direction is not too large or too small, the normal feeding of the feed inlet 11 is affected by too large, and the blocking effect on the material to be raised is affected by too small, preferably, as shown in fig. 3, the angle β between the inclined surface and the vertical direction is 6 ° to 10 °, and more preferably 8 °.

Preferably, as shown in fig. 2 and 3, the housing 1 is in a volute-shaped structure 12 at the position of the crushing mechanism 4, the axis of the main shaft 41 is preferably coincident with the axis of the volute, the inlet end of the volute-shaped structure 12 (i.e. the feeding end of the volute-shaped structure 12) is connected with a cover-shaped structure 13 which is bent laterally, the cover-shaped structure 13 is surrounded by two flat plates which are oppositely arranged and two curved plates which are oppositely arranged, so that two ports are formed, one port is connected with the inlet end of the volute-shaped structure 12, and the other port is the feeding port 11 which forms the crushing equipment. Of course, for convenience of processing, the curved plate may be replaced by a bending plate. The first baffle 71 preferably extends in the direction of the volute tongue of the volute shaped structure 12 to further enhance the retaining effect of the first retaining structure 7.

In order to further avoid the overflow of materials, a second material blocking structure 8 is further arranged at the edge of the feeding hole 11. Preferably, the second baffle structure 8 includes a second baffle 81, and the second baffle 81 may be, for example, a frame structure disposed around the feed inlet 11, or may be disposed on the left and right sides of the feed inlet 11 as shown in fig. 5, where two opposite sides of the second baffle 81 have inclined sections 811, and gradually incline from top to bottom toward each other, so that the blocking area is further increased while the smooth feeding of the feed inlet 11 is ensured, and the blocking effect on the returned material is improved. Preferably, the second blocking structure 8 further comprises a door curtain structure 82 disposed at the top of the feed inlet 11, and since the door curtain structure 82 is suspended on the feed inlet 11 and can swing freely, when feeding, the door curtain structure 82 can be continuously pushed to the inner side of the feed inlet by the material, and at this time, the door curtain structure 82 is difficult to be pushed out by the reverse force from the inner side of the feed inlet, so that the arrangement of the door curtain structure 82 does not affect the feeding and can block the material to be raised. The curtain-like structure may preferably comprise a plurality of depending plastic sheets or sheets, adjacent sheets or sheets preferably being partially overlapping.

Preferably, the crushing apparatus further comprises a dust suction device into which dust raised during the crushing of the material can be sucked, thereby further improving the production environment. The dust suction device may be disposed at any position where dust can be sucked, preferably, as shown in fig. 1 and 2, the dust suction device includes a first dust suction pipe 91 disposed outside the feed inlet 11, and the first dust suction pipe 91 is disposed above the feed side of the feed inlet 11 in order to ensure the dust suction effect of the first dust suction pipe 91 without affecting the feeding of the feed inlet 11. Further preferably, the free port of the first dust suction pipe 91 has a horn-shaped structure 911, thereby increasing the dust suction area and improving the dust suction effect. Preferably, the suction device further comprises a second suction line 92 extending into the housing 1, the second suction line 92 being arranged close to the feed opening 11, preferably extending into the housing 1 from the top of the hood-like structure 13. So, through the cooperation of first fender material structure 7, second fender material structure 8 and dust extraction, prevent the excessive of material and dust, improved production environment greatly.

Further, as shown in fig. 1 and 6, the crushing apparatus further includes a screw conveyor 20 for outputting the crushed material from the housing 1 through the crushing mechanism 4, for example, when the crushing apparatus is applied to a process of crushing and pulping straw, the crushed material may be conveyed into a separating screen through the screw conveyor 20 so as to realize automatic production.

Preferably, as shown in fig. 6, the screw conveying device 20 comprises a cylinder 201 and a screw 202 arranged in the cylinder 201, the cylinder 201 is connected with the shell 1, and the axis of the screw 202 is inclined relative to the horizontal plane, so that the conveying direction of the screw conveying device is inclined upwards, and therefore, part of conveyed materials fall back in the rising process, the situation that materials are blocked and equipment is stopped due to the fact that the positions, intersecting with the side walls 14 of the shell 1, in the cylinder 201 are avoided, and the reliability and fluency of the production process are ensured. The angle between the axis of the screw 202 and the horizontal is not too large or too small, which affects the conveying ability of the screw conveyor 20, and too small, which affects the anti-clogging effect, preferably the angle θ between the axis of the screw 202 and the horizontal is 30 ° to 50 °, further preferably 42 ° to 45 °.

Further preferably, the cylinder 201 is connected with the housing 1 and forms an integral structure, so that the discharging process of the cylinder 201 is performed in a closed space, material and dust overflow is avoided, and the production environment is improved. Specifically, as shown in fig. 6, the screw 202 of the screw conveyor 20 extends into the housing 1 from a side wall 14 of the housing 1 and extends to the lower side of the housing 1, the barrel 201 intersects with the side wall 14 of the housing 1, an opening is provided in the side wall of the barrel 201 (the opening is provided in the upper half-barrel portion of the barrel 201, which will be described later), and the lower portion of the housing 1 is connected to the opening, so that the barrel 201 and the housing 1 are formed into a unitary structure, and the crushed material at the upper portion of the housing 1 is facilitated to fall into the barrel 201 below and directly onto the initial portion of the screw 202. Preferably, the opening size in the circumferential direction of the barrel 201 occupies at least half of the circumference of the barrel 201, and the length of the opening in the axial direction of the barrel 201 includes at least 1.5 pitches of the screw.

At the location where the barrel 201 intersects the side wall 14, one side is a larger space within the housing and the other side is a smaller space within the barrel from where the space is sharply reduced, preferably, to further avoid clogging of the material at the location where the barrel 201 intersects the side wall 14, in the embodiment shown in fig. 6, the barrel 201 further includes a first flared section 2011 extending away from the housing 1 from the location where the first flared section 2011 intersects the housing side wall 14, the cross-sectional area of one end of the first flared section 2011 intersecting the housing side wall 14 being greater than the cross-sectional area of the other end. For convenience of processing and ensuring the conveying capability of the screw 202, preferably, the first flaring section 2011 includes an upper half cylinder section and a lower half cylinder section, where the cross-sectional shape and size of the lower half cylinder section are consistent and located on the same cylindrical surface, i.e. the lower half cylinder section is a part of the cylindrical surface, for example, a semi-cylindrical surface, and the cross-section of the upper half cylinder section is set to have a width larger than the diameter of the lower half cylinder section in at least a partial area, and/or a height larger than the radius of the lower half cylinder section in at least a partial area, so that a certain material accommodating space can be formed between the screw and the inner wall of the upper half cylinder section to avoid the material from being blocked at the intersection position of the cylinder 201 and the sidewall 14, for example, the cross-section of the upper half cylinder section may be rectangular, inverted trapezoid or circular arc. It will be appreciated that the upper and lower barrel halves herein refer to two-half structures separated along a plane parallel to the axis of the barrel 201, the interface of the two-half structures extending along the axis of the barrel 201, and the cross section herein refers to the plane taken from a plane perpendicular to the axis of the barrel 201. Further preferably, to achieve the transitional connection between the first flared section 2011 and the other part of the barrel 201, the cross-sectional area of the upper half barrel section gradually decreases in the direction away from the housing 1, for example, the half barrel section may be a half-cone-shaped, a half-cylinder-shaped and half-cone-shaped combined structure, a quadrangular prism-shaped, etc.

Because the size of the opening of the barrel 201 is smaller than that of the shell 1, preferably, as shown in fig. 6, in order to realize the transitional connection between the lower part of the shell 1 and the barrel 201, the lower part of the shell 1 includes a contraction section 15 gradually contracting in a direction close to the opening of the barrel 201, the contraction section 15 extends downwards until being connected to the edge of the opening of the barrel 201, the contraction section 15 can be any shape capable of realizing the transitional connection between the shell 1 and the barrel 201, and the contraction section 15 is preferably in an inverted quadrangular frustum shape, i.e. the upper end surface is large, the lower end surface is small, and the material can be ensured to smoothly slide into the barrel 201 while realizing the transitional connection between the shell 1 and the barrel 201, and the processing is convenient. In alternative embodiments, the constriction 15 may also be in the shape of an inverted cone. The angle between the side wall of the shrinkage section 15 and the vertical direction is not too large, which would affect the sliding of the material, preferably, as shown in fig. 6, the angle γ between the side wall of the shrinkage section 15 and the vertical direction is 30 ° or less, and more preferably 15 °.

Preferably, to facilitate the processing of the barrel 201 and to ensure the feeding capability of the screw, the barrel 201 includes an upper half barrel portion and a lower half barrel portion, the lower half barrel portion being a part of a cylindrical surface so that the cross-sectional shape and size of the lower half barrel portion are kept uniform, for example, may be semicircular or inferior arc, the above-described structure connected to the housing 1 is achieved by changing the structure of the upper half barrel portion, and when the barrel 201 is processed, the upper half barrel portion and the lower half barrel portion may be first processed separately, and then the two half portions are welded together. Further preferably, the upper half cylinder part is smoothly connected with the lower half cylinder part, so that dead angles at the junction of the upper half cylinder part and the lower half cylinder part are avoided, and the material conveying is prevented from being influenced.

Still preferably, the screw conveyor 20 further has a dust removing function, specifically, as shown in fig. 1 and 6, a dust removing cover 203 is provided on the cylinder 201, an open section 2012 is provided on the cylinder 201 along the axial direction, that is, the cylinder 201 has one or more sections in the axial direction, an open structure is provided on the open section 2012, the dust removing cover 203 covers the open section 2012, a third dust collecting pipeline 93 of the dust collecting device is communicated with the inside of the dust removing cover 203, and dust raised in the material conveying process is absorbed by the dust collecting device, so that on one hand, the cleanliness of the material is improved, on the other hand, the production environment is influenced by the overflow of dust can be avoided, and the dust collecting space of the dust collecting device can be enlarged due to the arrangement of the dust removing cover 203, thereby improving the dust collecting effect of the dust collecting device.

Preferably, in order to simplify the structure, the first dust collection pipeline 91, the second dust collection pipeline 92 for collecting dust at the feeding port 11 of the crushing apparatus, and the third dust collection pipeline 93 for collecting dust at the screw conveyor 20 may share an induced draft fan, the induced draft fan is connected to a main pipeline, and the main pipeline is further branched to form the first dust collection pipeline 91, the second dust collection pipeline 92, and the third dust collection pipeline 93.

Preferably, the dust hood 203 is connected to the cylinder 201 and formed as a unitary structure, e.g., the dust hood 203 is welded to the cylinder 201. In order to facilitate processing and ensure the feeding capability of the screw 202, similarly to the structure in which the barrel 201 and the housing 1 are connected, the barrel 201 is kept in only half at the position where the dust hood 203 is provided, and the bottom edge of the dust hood 203 is connected to both side edges of the lower half, and further preferably, the dust hood 203 is connected to the barrel 201 in a smooth transition.

Preferably, in order to further increase the dust suction space of the dust suction device, the width of the cross section of the dust hood 203 gradually increases outward in the radial direction of the screw 202, and since the screw conveyor 20 in the present application is provided obliquely, and in order to facilitate the installation of the third dust suction pipe 93 and to satisfy space requirements, the top of the dust hood 203 is provided horizontally or obliquely at a small angle, so that, as shown in fig. 9, the dust hood 203 is provided with the width E gradually increasing from bottom to top, specifically, two side plates opposite to the dust hood 203 are inclined away from each other from bottom to top, preferably, the two side plates of the dust hood 203 include a plurality of inclined sections from bottom to top, for example, two inclined sections are included as shown in fig. 9, and the slopes of the plurality of inclined sections sequentially increase from bottom to top. As shown in fig. 7, the width E of the dust hood 203 gradually decreases in the feeding direction of the screw conveyor 20 at the same level. Through the optimization of the structure of the dust hood 203, the dust collection space of the dust collection device can be increased, and the dust hood 203 can be conveniently connected with the cylinder 201.

Preferably, in order to facilitate observation of the conditions inside the dust hood 203, the dust hood 203 is provided with an observation window structure.

When the screw conveyor 20 conveys lighter materials, the dust collector is easy to suck the materials together, in order to avoid the situation, as shown in fig. 8, a third material blocking structure 204 is further arranged in the dust hood 203, the third material blocking structure 204 can be arranged on the top or the inner wall of the side part of the dust hood 203, the third material blocking structure 204 is blocked between the inlet of the dust hood 203 and the dust collection inlet of the dust collector, and the air flow entering from the inlet of the dust hood 203 must bypass the third material blocking structure 204 to reach the dust collection inlet of the dust collector, so that the materials are difficult to bend in the air even if being blown up by the air flow, and the materials in the cylinder 201 are prevented from being sucked into the dust collector by the third material blocking structure 204.

The third material blocking structure 204 may be any structure capable of playing a role in blocking materials, preferably, the third material blocking structure 204 includes a plurality of dust collection baffles inclined towards different directions, the dust collection baffles inclined towards different directions can form a tortuous airflow channel, the airflow can change the moving direction in the channel, and materials are difficult to change the moving direction in the channel and blocked by the dust collection baffles, so that the materials are prevented from being mistakenly introduced into the dust collection device. In a specific embodiment, as shown in fig. 8, the third material blocking structure 204 includes two types of dust absorbing baffles, namely a first dust absorbing baffle 2041 and a second dust absorbing baffle 2042, in the material conveying direction of the screw conveying device 20, the first dust absorbing baffle 2041 and the second dust absorbing baffle 2042 are respectively disposed at two sides of the third dust absorbing pipeline 93, the first dust absorbing baffle 2041 is disposed at an upstream side of the third dust absorbing pipeline 93, the second dust absorbing baffle 2042 is disposed at a downstream side of the third dust absorbing pipeline 93, and the first dust absorbing baffle 2041 and the second dust absorbing baffle 2042 are inclined towards a direction close to an inlet of the third dust absorbing pipeline 93, so that blocking is formed at two sides of the third dust absorbing pipeline 93, and a material blocking effect is further improved. Further preferably, in the longitudinal section of the dust hood, the first dust collection baffle 2041 and the second dust collection baffle 2042 are staggered, and the extension line of the second dust collection baffle 2042 falls on the first dust collection baffle 2041, so that the blocking effect on materials is further improved. When a plurality of third dust suction pipes 93 are provided, the plurality of third dust suction pipes 93 are preferably arranged at intervals along the conveying direction of the screw conveying device, and the first dust suction baffle 2041 and the second dust suction baffle 2042 may be disposed at two sides of each third dust suction pipe 93, or the plurality of third dust suction pipes 93 may share one first dust suction baffle 2041 or share one second dust suction baffle 2042, when the baffles are shared, the shared baffles are appropriately lengthened to meet the material blocking requirement of the plurality of third dust suction pipes 93, for example, in the embodiment shown in fig. 8, two third dust suction pipes 93 are included, and the two third dust suction pipes 93 share one first dust suction baffle 2041, and the length of the first dust suction baffle 2041 is greater than that of the second dust suction baffle 2042, so that the first dust suction baffle 2041 is located at the most upstream, and when the material entering the dust hood 203 floats under the action of the air flow, most of the material can be blocked by the first dust suction baffle 2041, and thus the material can be prevented from being sucked by the two third dust suction pipes 93 from the two third dust suction pipes 93 in the embodiment shown in fig. 8. The angles of the first dust collection baffle 2041 and the second dust collection baffle 2042 relative to the horizontal plane are not too large nor too small, and too large affects the dust collection effect of the dust collection pipeline, while too small affects the blocking effect of the material, preferably, an angle δ between the first dust collection baffle 2041 and the horizontal plane is 35 ° or more and 45 ° or less, more preferably 40 °, and an angle ε between the second dust collection baffle 2042 and the horizontal plane is 35 ° or more and 45 ° or less, still more preferably 42 °.

Crushing apparatus is crushing the in-process of material, the material can be detained on screen cloth 5 owing to light in weight, glue reasons such as wet, arouse the jam of screen cloth 5, influence crushing apparatus's normal operating, in this application, as shown in fig. 1, be formed with the passageway 2014 of intercommunication casing 1 and dust excluding hood 203 in barrel 201, under dust extraction's suction effect, form the air current promptly between casing 1 and dust excluding hood 203, thereby guarantee that the material on the screen cloth 5 can in time break away from with screen cloth 5 under dust extraction's produced air current's effect, make the material in time get into screw conveyor 20, guaranteed the continuity of production, improved production efficiency.

Specifically, as shown in fig. 1, the dust hood 203 and the housing 1 are spaced apart from each other, and the cylinder 201 includes a connection section 2013 connecting the dust hood 203 and the housing 1, that is, the connection section 2013 connects the sidewall 14 of the housing 1 and the sidewall of the dust hood 203, and a passage communicating the housing 1 and the dust hood 203 is formed above the screw 202 in the connection section 2013. For ease of machining, the connecting section 2013 is part of the upper half cylinder portion. The cross section of the connecting section 2013 may be rectangular, inverted trapezoidal or circular arc, for example. Further preferably, the minimum distance F from the radially outer edge of the screw 202 to the top of the connecting section 2013 is 0.5 to 1.5 times the screw radius in the radial direction.

Preferably, the cross section of the barrel 201 is approximately U-shaped, so that the upper space of the screw 202 is increased, the blocking of materials is further avoided, and the combination of the third material blocking structure 204 ensures that the materials are not sucked away by the dust suction device, and the screw conveyor 20 can smoothly convey the materials.

It is easy to understand by those skilled in the art that the above preferred embodiments can be freely combined and overlapped without conflict.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The spiral conveying device with the dust removing function comprises a cylinder body and a screw rod arranged in the cylinder body, and is characterized by further comprising a dust removing cover and a dust collecting device, wherein at least one section of open section is arranged on the cylinder body along the axial direction, the dust removing cover is arranged on the open section, and a dust collecting pipeline of the dust collecting device is communicated with the inside of the dust removing cover;

the width of the cross section of the dust hood is gradually increased outwards along the radial direction of the screw rod, two opposite side plates of the dust hood incline from bottom to top in a direction away from each other, the two side plates comprise a plurality of inclined sections from bottom to top, and the slopes of the inclined sections from bottom to top are sequentially increased, so that the dust hood is gradually increased in width from bottom to top.

2. The screw conveyor of claim 1, wherein the dust hood is connected to the barrel and is formed as a unitary structure.

3. Screw conveyor according to claim 1, characterized in that the screw conveyor is arranged obliquely with respect to the horizontal plane such that the conveying direction of the screw conveyor is obliquely upwards.

4. A screw conveyor according to claim 3, characterized in that the width of the dust hood is gradually reduced in the conveying direction of the screw conveyor at the same level.

5. The screw conveyor of claim 4, wherein the top of the dust hood is horizontally disposed.

6. The screw conveyor according to claim 1, wherein a material blocking structure is provided in the dust hood for preventing material in the cylinder from being sucked into the dust suction device.

7. The screw conveyor of claim 6, wherein the material blocking structure includes a plurality of dust collection baffles inclined in different directions.

8. The screw conveyor according to claim 7, wherein the dust collection baffle is provided on an inner wall of the top and/or side of the dust hood.

9. The screw conveyor according to claim 7, wherein the dust suction baffles are disposed on both sides of the dust suction pipe in a conveying direction of the screw conveyor.

10. The screw conveyor according to claim 7, wherein the plurality of dust suction baffles inclined in different directions include a first dust suction baffle that is located on an upstream side of the dust suction pipe in a conveying direction of the screw conveyor and inclined in a direction approaching an inlet of the dust suction pipe.

11. The screw conveyor according to claim 10, wherein the plurality of dust suction baffles inclined to different directions further includes a second dust suction baffle which is located on a downstream side of the dust suction pipe in a conveying direction of the screw conveyor and inclined to a direction approaching an inlet of the dust suction pipe.

12. The screw conveyor of claim 11, wherein the first dust extraction baffles are staggered from the second dust extraction baffles in a longitudinal cross section of the dust extraction hood.

13. A screw conveyor according to claim 11 or 12, wherein the dust extraction device comprises a plurality of said dust extraction lines spaced apart along the conveying direction of the screw conveyor.

14. The screw conveyor according to claim 13, wherein the upstream side of each of the suction lines is provided with the first suction baffle or the plurality of suction lines share one of the first suction baffles, and/or the downstream side of each of the suction lines is provided with the second suction baffle.

15. The screw conveyor according to claim 2, wherein the cross section of the integral structure of the dust hood and the cylinder is U-shaped.

16. A crushing apparatus comprising a housing, a crushing mechanism provided in the housing, and a driving device for driving the crushing mechanism to rotate, wherein the crushing mechanism is used for crushing a material in the housing, and further comprising a screw conveyor according to any one of claims 1 to 15, wherein the screw conveyor is used for outputting the crushed material in the housing.

17. A comminution apparatus as claimed in claim 16 in which the barrel of the screw conveyor is connected to the housing, the dust hood and housing being spaced apart from one another.

18. A crushing apparatus according to claim 17, wherein the cylinder includes a connecting section connecting the dust hood and the housing, the connecting section forming a passage therein above the screw that communicates the housing with the dust hood.

19. A comminution apparatus as claimed in any one of claims 16 to 18 in which the comminution apparatus is a straw comminution apparatus.