CN115318637A

CN115318637A - Horizontal air flow sieve

Info

Publication number: CN115318637A
Application number: CN202211116285.6A
Authority: CN
Inventors: 连千荣
Original assignee: Ningbo Ekm New Material Co ltd
Current assignee: Ningbo Ekm New Material Co ltd
Priority date: 2022-09-14
Filing date: 2022-09-14
Publication date: 2022-11-11
Anticipated expiration: 2042-09-14
Also published as: CN115318637B

Abstract

The application relates to a horizontal air current sieve includes: the screening bin comprises a screening bin shell, a screening bin body and a screening bin cover, wherein a cavity is formed in the screening bin shell, a partition plate is arranged in the screening bin shell to divide the cavity into a fine screening bin and a coarse screening bin, a communication channel for communicating the fine screening bin with the coarse screening bin is formed in the partition plate, and a feeding channel for communicating the fine screening bin is formed in one end of the screening bin shell; two ends of the fine screening cylinder are hermetically connected with the communicating channel and the feeding channel; the expansion rollers are arranged on the inner sides of the fine screening barrels, one ends of the expansion rollers penetrate through the fine screening barrels, are connected to the screening bin shell and are located in the circumferential direction of the feeding channel, the fine screening barrels are abutted to the partition plate through the other ends of the expansion rollers, and a first limiting baffle is arranged at one end, close to the feeding channel, of each expansion roller so as to abut against the inner wall, located in the circumferential direction of the feeding channel, of the screening bin shell; and the expansion driving mechanism is connected to the screening bin shell and used for driving the expansion roller to move towards the direction far away from the feeding channel. This application can be adjusted the aperture in thin screening hole.

Description

Horizontal air flow sieve

Technical Field

The utility model relates to a field of screening plant especially relates to a horizontal air current sieve.

Background

The air flow sieve is a sieving device for sieving two materials with different particle sizes, generally speaking, a horizontal air flow sieve is provided with a feeding mechanism with a spiral conveyer in a sieving bin, the materials enter a sieve drum from a hopper through the spiral conveyer and are continuously updated and pushed in a sieve box along with the continuous rotation of a splitter blade, fine materials are sieved out through a fine sieving drum and are discharged from a fine material port, and coarse materials are sieved out through a coarse sieving drum and are discharged from a coarse material port.

Generally, when screening materials with inconsistent thicknesses, the aperture of the fine screening cylinder is usually required to be adjusted, but generally, the adjustment of the aperture requires the whole fine screening cylinder to be removed and replaced, which results in low efficiency.

Disclosure of Invention

In order to adjust the aperture of the fine screening cylinder conveniently, the application provides a horizontal airflow screen.

The application provides a horizontal air current sieve adopts following technical scheme:

a horizontal airflow screen comprising:

the screening bin comprises a screening bin shell, a screening bin body and a coarse screening bin, wherein a cavity is formed in the screening bin shell, a partition plate is arranged in the screening bin shell to divide the cavity into the fine screening bin and the coarse screening bin, a communication channel for communicating the fine screening bin with the coarse screening bin is formed in the partition plate, and a feeding channel for communicating the fine screening bin is formed in one end of the screening bin shell;

the fine screening cylinder is made of elastic materials, two ends of the fine screening cylinder are respectively connected to the communicating channel and the feeding channel in a sealing mode, and a plurality of fine screening holes are formed in the fine screening cylinder;

the expansion roller is provided with a plurality of expansion rollers which are all positioned at the inner side of the fine screening barrel, one end of each expansion roller penetrates through the fine screening barrel, is connected to the screening bin shell and is positioned at the circumferential direction of the feeding channel, the other end of each expansion roller abuts against the fine screening barrel on the partition plate, and one end, close to the feeding channel, of each expansion roller is provided with a first limiting baffle so as to abut against the fine screening barrel on the inner wall, positioned at the circumferential direction of the feeding channel, of the screening bin shell;

and the expansion driving mechanism is connected to the screening bin shell and used for driving the expansion roller to move towards the direction far away from the feeding channel.

Through adopting above-mentioned technical scheme, fine screening section of thick bamboo makes it can have certain deformability through elastic material's setting, and makes fine screening section of thick bamboo wholly can be opened through expansion roller and expansion actuating mechanism's setting to make the sieve mesh on the fine screening section of thick bamboo also can be enlarged, thereby make the diameter increase of the granule that fine screening section of thick bamboo can sieve out, thereby conveniently adjust, need not wholly to change a fine screening section of thick bamboo.

Preferably, the one end that the expansion roller deviates from first limit baffle is provided with the second limit baffle parallel with the baffle, be provided with a plurality of balls on the second limit baffle, the inner wall butt of ball and fine screening section of thick bamboo is provided with a plurality of spacing grooves that are used for limiting ball movement track one by one on the baffle when expansion actuating mechanism drive expansion roller moves to the direction of keeping away from feedstock channel, the ball is spacing to slide in same spacing groove all the time.

Through adopting above-mentioned technical scheme, this kind of mode can be spacing to the both ends of expansion roller for expansion actuating mechanism is at the in-process of drive expansion roller one end, and the whole expansion roller that can move along established direction, simultaneously, because the other end of expansion roller needs to be with fine screening section of thick bamboo butt on the baffle, the friction when the setting mode of ball also can reduce the contact of the expansion roller other end.

Preferably, expansion actuating mechanism includes that a plurality of rotations are connected in the outer rolling disc and the drive of screening storehouse casing rolling disc pivoted drive arrangement, the rotation axle center of rolling disc is located outside the feedstock channel, the expansion roller runs through screening storehouse casing is connected in the outer fringe of rolling disc, be provided with on the screening storehouse casing and supply the expansion roller to run through and the spacing passageway that slides.

Through adopting above-mentioned technical scheme, this kind of mode makes to make the expansion roll remove along curved direction through rotating the rolling disc, and is corresponding simultaneously, and the orbit of spacing groove also can correspond and set up to curved orbit for the arc at the spacing groove also can be used for supporting partly gravity, thereby reduces and leads to the expansion roll to take place the condition of sliding because of the effect of gravity.

Preferably, drive arrangement connects in the outer cyclic annular carousel of screening storehouse casing including rotating, feed mechanism's the outside is located to cyclic annular carousel cover and is concentric setting, and is a plurality of with feedstock channel the rolling disc equipartition in the circumference of cyclic annular carousel, just the outer fringe of rolling disc has the external tooth face with cyclic annular carousel engaged with, be provided with the locking device who is used for locking cyclic annular carousel on the screening storehouse casing.

Through adopting above-mentioned technical scheme, this kind of setting can be so that at the in-process that rotates annular carousel, can all rotate in step with a plurality of rolling discs of annular carousel meshing to make all expansion rollers and connection structure of control fine screening section of thick bamboo expansion can move in step, make the circumference of fine screening section of thick bamboo all can be by even expansion.

Preferably, a fine screening section of thick bamboo just is connected and is extended to the outer first turn-ups portion of screening storehouse casing with the first extension of feedstock channel's inner wall butt and with first extension in extending to feedstock channel, first turn-ups portion clamp is located between annular turntable and the screening storehouse casing, locking device is including setting up in a plurality of locating parts of annular turntable week side and setting up the retaining member on the locating part, the locating part is used for restricting and breaks away from each other between annular turntable, first turn-ups portion and the screening storehouse casing, just the retaining member is used for compressing tightly annular turntable in first turn-ups portion or pine take off.

Through adopting above-mentioned technical scheme, this kind of mode not only can seal a fine screening section of thick bamboo and feed mechanism, also can make the granule material can not get into in the fine screening storehouse through the junction between a fine screening section of thick bamboo and the screening storehouse casing. Furthermore, the fine screening cylinder is integrally made of elastic materials, so that certain damping force can be applied to the annular turntable, the annular turntable can be pressed tightly by the locking piece, the state of the annular turntable can be limited, and the sealing effect between the fine screening cylinder and the screening bin shell can be improved.

Preferably, the outer edges of the first limiting baffle and the second limiting baffle are arranged in an arc shape, and the limiting channel is always located in the projection of the first limiting baffle in the process that the expansion roller slides in the limiting channel.

Through adopting above-mentioned technical scheme, spacing passageway is arranged in the mode that sets up of first limit baffle's projection all the time, can be so that first limit baffle can mutually support with fine screening section of thick bamboo and seal up spacing passageway to make fine screening storehouse and external can not directly communicate through spacing passageway.

Preferably, the expansion roller comprises a windward section located between the first limit baffle and the second limit baffle, and the cross section of the windward section is in streamline arrangement.

Through adopting above-mentioned technical scheme for the air current sieve is in the work engineering, and the air current vortex condition in the fine screening section of thick bamboo diminishes, thereby makes screening efficiency be difficult to by the setting of expansion roll and is influenced.

Preferably, the expanding roller further comprises a connecting section used for being connected with the rotating disc, the windward section and the connecting section as well as the windward section and the second limiting baffle are connected in a rotating mode, the windward section is coaxially connected with an adjusting column penetrating through the connecting section, and the adjusting column is connected with the connecting section in a damping mode.

Through adopting above-mentioned technical scheme, this kind of setting makes after removing the expansion roller through rotating the rolling disc, can change the relative state of windward section in the bucket through rotating the regulation post to make the expansion roller after the adjustment, windward section can both be adjusted to a less state of resistance in the course of the work all the time.

Preferably, a fine screening section of thick bamboo has through the intercommunication passageway and extends to the second turn-ups portion in the coarse screening storehouse, be provided with a coarse screening section of thick bamboo in the coarse screening storehouse, a coarse screening section of thick bamboo includes coaxial flange portion, coarse screening portion and the top cap portion that connects gradually, flange portion circumference is provided with a plurality of hollow spacing posts, the top cap portion is connected to the connection piece that radially extends and with spacing post connection, flange portion compresses tightly second turn-ups portion on the baffle, run through in the spacing post and be provided with the fastening bolt who is connected with the baffle, the tip of fastening bolt and the tip butt of spacing post.

Through adopting above-mentioned technical scheme, this kind of mode of setting also can further improve the sealed effect of fine screening section of thick bamboo other end for the space in the fine screening section of thick bamboo can not directly communicate with fine screening storehouse.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the step of synchronously expanding each expansion roller by rotating the annular turntable drives the fine screening barrel to be integrally expanded, so that the sieve pores on the fine screening barrel can be enlarged, the diameter of particles which can be screened out by the fine screening barrel is increased, the fine screening barrel is convenient to adjust, and the fine screening barrel does not need to be integrally replaced;

2. the sealing effect is better;

3. the operation steps are simple.

Drawings

FIG. 1 is a cross-sectional view of a horizontal airflow screen.

FIG. 2 is a schematic view, partially in section, of the fine screen cylinder in cooperation with a spreader roll.

Fig. 3 is a schematic view of the arrangement of the expander roll in cooperation with the drive means.

Fig. 4 is a schematic partial cross-sectional view of the screening bin housing, particularly illustrating the configuration of the side of the partition facing the fine screening bin.

Fig. 5 is a schematic structural view of a driving device on a screening bin shell.

Fig. 6 is a schematic view of the structure of the expander roll.

Fig. 7 is an exploded view of the annular turntable, feed tube and screening bin housing.

Fig. 8 is a schematic diagram of the construction of the coarse screening cartridge installation.

Figure 9 is an exploded schematic view of a coarse screening cartridge and its installation.

Description of the reference numerals: 1. a screening bin housing; 2. a feeding mechanism; 11. fine screening and warehousing; 12. coarse screening and warehousing; 13. a communication channel; 14. a feed channel; 15. a partition plate; 3. a fine screening cylinder; 4. a coarse screening cylinder; 21. a conveying rotating main shaft; 5. an expanding roller; 6. an expansion drive mechanism; 51. a first limit baffle; 52. a second limit baffle; 53. a ball bearing; 16. a limiting groove; 61. rotating the disc; 62. a drive device; 17. a limiting channel; 621. an annular turntable; 54. a windward section; 55. a connecting section; 56. an adjustment column; 63. a locking device; 22. a feed pipe; 631. a limiting member; 632. a locking member; 31. a first extension portion; 32. a first burring part; 33. a second extension portion; 34. a second burring; 41. a flange portion; 42. a coarse screen section; 43. a top cover portion; 44. a limiting post; 45. and (7) connecting the sheet.

Detailed Description

The present application is described in further detail below with reference to figures 1-9.

The embodiment of the application discloses horizontal air current sieve. Referring to fig. 1, the horizontal airflow screen includes a screening bin housing 1 and a feeding mechanism 2 disposed at one end of the screening bin housing 1, wherein an opening for adding particles is disposed above the feeding mechanism 2 and communicates with the screening bin housing 1. The screening bin shell 1 is internally provided with a cavity which is divided into a fine screening bin 11 and a coarse screening bin 12 by a partition plate 15, the partition plate 15 is provided with a communicating channel 13 for communicating the fine screening bin 11 with the coarse screening bin 12, and one side of the screening bin shell 1, which is positioned on the fine screening bin 11 and is far away from the coarse screening bin 12, is provided with a feeding channel 14 for communicating the fine screening bin 11 with the feeding mechanism 2. The screening bin comprises a screening bin shell 1 and is positioned in a fine screening bin 11, a fine screening barrel 3 is arranged in the fine screening bin 11, two ends of the fine screening barrel 3 are respectively communicated with a feeding mechanism 2 and a coarse screening barrel 12, a coarse screening barrel 4 which is connected to the screening bin shell 1 and one end of the coarse screening barrel is communicated with the fine screening barrel 3 is arranged in the coarse screening bin 12, a conveying rotating main shaft 21 is arranged in the fine screening barrel 3 in an extending mode through the feeding mechanism 2, one end, close to the feeding mechanism 2, of the conveying rotating main shaft 21 is a spiral section, a plurality of shunt blades are circumferentially arranged on one side, far away from the feeding mechanism 2, materials are continuously conveyed into the fine screening barrel 3 through the spiral section under the effect of the conveying rotating main shaft 21, then the materials are turned up through continuous stirring of the shunt blades, finer particles are screened out through screen holes in the fine screening barrel 3 and enter the fine screening bin 11, and other materials are continuously pushed forward to enter the coarse screening barrel 4 and are screened into the coarse screening bin 12.

Referring to fig. 1 and 2, the fine screening cylinder 3 is made of an elastic material, a plurality of fine screening holes are formed in the circumferential direction of the fine screening cylinder 3, an expansion roller 5 for expanding the fine screening cylinder 3 is arranged in the fine screening cylinder 3, and an expansion driving mechanism 6 for driving the expansion roller 5 to move so as to expand the fine screening cylinder 3 is arranged outside the screening bin housing 1. The expansion roller 5 is provided with a plurality of and all is located the inboard of a fine screening section of

thick bamboo

3, and 5 one end of expansion roller runs through a fine screening section of thick bamboo 3 and slides and connect on screening storehouse casing 1, and wherein, the part that 5 one end of expansion roller slided with screening storehouse casing 1 and is connected is located feedstock channel 14 circumference, and the other end extends and will fine screening section of thick bamboo 3's part butt on baffle 15 to the direction in coarse screening storehouse 12 places. The expanding roller 5 is provided with a first limit baffle 51 in the fine screening cylinder 3, and the first limit baffle 51 is arranged on one side close to the feeding mechanism 2 so as to support the fine screening cylinder 3 tightly on the inner wall of the screening bin shell 1 in the circumferential direction of the feeding channel 14.

Here, in the process that the expansion driving mechanism 6 drives the expansion roller 5 to move, the expansion roller 5 moves in the direction away from the feeding channel 14, so that the inner diameter of the fine screening cylinder 3 is expanded, and the portions at the two ends of the fine screening cylinder 3 are also driven by the two ends of the expansion roller 5 to abut against the partition 15 and the inner wall of the screening bin housing 1, and in the process that the expansion roller 5 moves in the direction away from the feeding channel 14, the area of the fine screening cylinder 3 on the partition 15 and the screening bin housing 1 is gradually increased, so that the expansion roller 5 not only stretches the circumferential direction of the fine screening cylinder 3 (i.e. the radius of the cross section is increased, the circumference of the cross section is increased), but also stretches the axial direction of the fine screening cylinder 3 in the process of outward expansion. The fine screen cylinder 3 is stretched around its circumference so that the fine screen holes in the fine screen cylinder 3 are enlarged. When the expansion driving mechanism 6 drives the expansion roller 5 to move reversely, the fine screening cylinder 3 contracts under the deformation action of the material of the fine screening cylinder, so that the aperture of the fine screening hole is reduced, and the purpose of adjusting the aperture of the fine screening hole is achieved.

Here, the circumferential direction of the fine screen holes of the fine screen cylinder 3 may not be uniformly expanded due to uneven stretching, so that the fine screen holes may deviate to an elliptical shape as a whole after being expanded, and as the expanding roller 5 moves one unit distance in the axial direction away from the feed passage 14, the axial direction of the fine screen cylinder may be stretched two unit distances, and the circumferential length of the cross section of the fine screen cylinder may be stretched approximately 2 pi unit distances. Therefore, the axial stretching distance of the fine screen cylinder 3 is shorter, and the size of the fine screen holes through which the material can pass is largely changed by the change of the distance of the fine screen holes along the axial direction of the fine screen cylinder 3.

In one possible implementation, the size of the material allowed to pass through the changed fine screening holes can be determined experimentally, for example, by putting the material with known particle size into a horizontal screening machine to perform screening to determine whether the adjusted size of the fine screening holes meets the required requirement. And after the experiment meets the requirements, the corresponding adjusting position can be recorded to represent the particle size of the corresponding material which can be sieved after the expanding roller is adjusted to the position.

Referring to fig. 2 to 4, on the basis, a second limiting baffle 52 parallel to the partition plate 15 is arranged at one end of the expansion roller 5 away from the first limiting baffle 51, three balls 53 are arranged at one end of the second limiting baffle 52 towards the partition plate 15 along the circumferential direction of the axis of the expansion roller 5, and the balls 53 are abutted with the inner wall of the fine screening cylinder 3 and abut against the corresponding part of the fine screening cylinder 3 on the partition plate 15. The partition 15 is provided with three limiting grooves 16 for limiting the movement tracks of the balls 53 one by one, and the balls 53 can still be limited by the limiting grooves 16 because the fine screening cylinder 3 is made of elastic material and has certain deformation capacity. And because the arrangement of the elastic material of the fine screening cylinder 3, the first limit baffle 51 and the second limit baffle 52 on the two sides can be extruded by the elastic material to improve respective friction force, and the overall stability of the expanding roller 5 is improved. The outer contours of the first limit baffle 51 and the second limit baffle 52 overlap each other along the extending direction of the expander roller 5. In the process of abutting against the fine screening cylinder 3, a part of the outer edge of each of the first limit baffle 51 and the second limit baffle 52 abuts against the fine screening cylinder 3 to limit the degree of expansion or reduction of the fine screening cylinder 3.

Referring to fig. 3 and 5, the expansion driving mechanism 6 includes a plurality of rotating discs 61 rotatably connected to the outside of the screening bin housing 1 and a driving device 62 for driving the rotating discs 61 to rotate, the rotating axis of the rotating discs 61 is located at the circumferential direction of the feeding channel 14, and the rotating discs 61 and the driving device 62 are both connected to the outer surface of the screening bin housing 1. One end of the expanding roller 5 penetrates through the screening bin shell 1 and is welded and fixed on the outer edge of the rotating disc 61, and a limiting channel 17 for the expanding roller 5 to penetrate and slide is correspondingly arranged on the screening bin shell 1. Under the action of the driving device 62, the rotating disc 61 is driven to rotate synchronously, so that the expanding roller 5 fixed on the outer edge of the rotating disc 61 moves correspondingly. Here, the path of the stopper passage 17 is circular arc-shaped and coaxial with the rotary disk 61, and the fine sieving cylinder 3 also needs to be provided with the stopper passage 17 through which the expanding roller 5 passes. However, it should be noted that, in the process that the expanding roller 5 slides in the limiting channel 17, the axial projection of the limiting channel 17 always needs to fall into the position of the first limiting baffle 51, so that the position of the limiting channel 17 is blocked under the mutual cooperation of the three, the communication between the fine screening bin 11 and the outside of the screening bin housing 1 is cut off, and the screened particles in the fine screening bin 11 cannot leak out of the screening bin housing 1 through the limiting channel 17.

The driving device 62 includes an annular turntable 621 rotatably connected to the outside of the screening bin housing 1, the annular turntable 621 is sleeved on the outer side of the feeding pipe 22 of the feeding mechanism 2 and concentrically arranged with the feeding channel 14, wherein, the expansion rollers 5 are provided with four groups in the present embodiment, the four groups of expansion rollers 5 are correspondingly connected with a rotating disc 61, the four rotating discs 61 are uniformly distributed on the circumference of the annular turntable 621, and the outer edge of the rotating disc 61 has an outer tooth surface meshed with the annular turntable 621. Here, the annular turntable 621 may be formed in a gear shape as a whole, or may be provided with outer teeth only at a portion that meshes with the turntable 61. Therefore, during the rotation of the ring-shaped turntable 621, the four rotating disks 61 can be synchronously driven to move in the same direction, so that the four sets of expanding rollers 5 can synchronously expand along the predetermined direction. Here, the annular turntable 621 may be marked to indicate the particle size of the material that the fine screening holes can allow to screen when the annular turntable 621 rotates to the corresponding angle.

Referring to fig. 6, the expanding roller 5 includes a windward section 54 and a connecting section 55 coaxially and rotatably connected, the windward section 54 is located in the fine screening cylinder 3, the connecting section 55 is used for connecting with the rotating disc 61, the first limit baffle 51 is fixed on the connecting section 55, and the second limit baffle 52 is rotatably connected with the windward section 54. The cross section of the windward section 54 is in a streamline arrangement, the windward section 54 is coaxially connected with an adjusting column 56 penetrating through the connecting section 55, the adjusting column 56 extends out of the connecting section 55 and is in damping connection with the connecting section 55, and the specific damping connection mode can be realized by wrapping a rubber sleeve outside the adjusting column 56. Thus, after the ring-shaped rotating disc 621 drives the four expanding rollers 5 to perform corresponding movements, the relative posture of the windward section 54 in the fine screening drum 3 can be changed by rotating the adjusting column 56, so that the influence on the air flow in the fine screening drum 3 during the stirring of the splitter blades is small.

The screening bin shell 1 is provided with a locking device 63 for locking the annular rotary table 621, the feeding pipe 22 of the feeding mechanism 2 is connected with the screening bin shell 1 in a flange connection mode, and the annular rotary table 621 is located in the outer circumferential direction of the flange end of the feeding pipe 22 and limited by the flange end. The locking device 63 includes a limiting member 631 disposed in the circumferential direction of the annular turntable 621 and a locking member 632 disposed on the limiting member 631, wherein the limiting member 631 is disposed in an L-shape to extend to the end surface of the annular turntable 621 to limit the annular turntable 621. Here, the locking member 632 may adopt a bolt so that the locking member 632 and the limiting member 631 cooperate with each other to lock the ring-shaped rotating disc 621 in a tight manner, and thus when the ring-shaped rotating disc 621 rotates by a desired angle to adjust the fine screening cylinder 3 to a proper state, the state of the ring-shaped rotating disc 621 may be locked by the locking member 632 so that the state of the fine screening cylinder 3 is not easily changed during the operation.

Referring to fig. 7, as a specific installation manner of the fine screening drum 3, the fine screening drum 3 has a first extending portion 31 extending into the feeding channel 14 and abutting against the inner wall of the feeding channel 14, and a first flanging portion 32 connected to the first extending portion 31 and extending outside the screening bin housing 1, the first flanging portion 32 is sandwiched between the annular turntable 621 and the screening bin housing 1, and the first flanging portion 32 is also sandwiched between the flange end of the feeding pipe 22 of the feeding mechanism 2 and the screening bin housing 1. The arrangement of the first flanging part 32 not only seals the feeding pipe 22 of the feeding mechanism 2 and the screening bin housing 1, but also can exert a certain damping effect on the annular turntable 621, so that the feeding mechanism 2 is directly communicated with the space in the fine screening barrel 3.

Referring to fig. 8 and 9, the fine screening cylinder 3 further has a second extending portion 33 extending into the communicating passage 13 and abutting against the inner wall of the communicating passage 13, and a second turned-over portion 34 passing through the communicating passage 13 and extending into the coarse screening bin 12, the coarse screening bin 12 is provided therein with the coarse screening cylinder 4, and the coarse screening cylinder 4 is connected to the partition 15 with the second turned-over portion 34 interposed between the coarse screening cylinder 4 and the partition 15 to seal a portion of the coarse screening cylinder 4. Specifically, coarse screening section of thick bamboo 4 is including coaxial flange portion 41 that connects gradually, coarse screening net portion 42 and top cap portion 43, coarse screening net portion 42's sieve mesh is located side circumference, flange portion 41 circumference is integrative to be provided with a plurality of hollow spacing posts 44, top cap portion 43 is connected to the connection piece 45 that radially extends and be connected with spacing post 44, connection piece 45 is connected between flange portion 41 and the top cap portion 43 in order to form a relatively fixed whole, and coarse screening net portion 42 and flange portion 41 and with top cap portion 43 between all can fix through the mode that glues. In the installation process, the flange part 41 presses the second flanging part 34 against the partition 15, and the fastening bolt penetrates through the limiting column 44 and then is connected with the partition 15, and the coarse screening cylinder 4 is integrally fixed on the partition 15 in a manner that the fastening bolt is abutted against the end part of the limiting column 44, wherein the other end of the conveying rotating main shaft 21 of the feeding mechanism 2 can penetrate through the top cover part 43 to support the conveying rotating main shaft 21.

Therefore, under the action of the first extension part 31 and the second extension part 33 on the two sides of the fine screening cylinder 3, the space in the fine screening cylinder 3 can be communicated with the fine screening bin 11 only through the fine screening holes, and meanwhile, in the process of expanding the fine screening bin 11 by the expanding roller 5, the structural arrangement of the first extension part 31 and the second extension part 33 can improve the connection strength between the two ends of the fine screening bin 11 and the partition 15 as well as the screening bin shell 1, so that the fine screening bin 11 is more stable in the process of being expanded.

The implementation principle of the horizontal airflow screen in the embodiment of the application is as follows:

when the aperture of the fine screening cylinder 3 needs to be adjusted, the bolt locking the annular turntable 621 is loosened, the circumferential expansion rollers 5 expand the fine screening cylinder 3 to a proper size by rotating the annular turntable 621 to a proper angle, then the bolt is tightened, and then the adjusting columns 56 of the expansion rollers 5 are adjusted to adjust the windward section 54 to a proper state.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A horizontal airflow screen, comprising:

the screening bin comprises a screening bin shell (1) and a screening bin body, wherein a cavity is formed in the screening bin shell (1), a partition plate (15) is arranged in the screening bin shell (1) to divide the cavity into a fine screening bin (11) and a coarse screening bin (12), a communication channel (13) for communicating the fine screening bin (11) with the coarse screening bin (12) is formed in the partition plate (15), and a feeding channel (14) for communicating the fine screening bin (11) is formed in one end of the screening bin shell (1);

the fine screening cylinder (3) is made of elastic materials, two ends of the fine screening cylinder are respectively connected with the communicating channel (13) and the feeding channel (14) in a sealing mode, and a plurality of fine screening holes are formed in the fine screening cylinder (3);

the expansion roller (5) is provided with a plurality of expansion rollers which are all located on the inner side of the fine screening barrel (3), one end of each expansion roller (5) penetrates through the fine screening barrel (3) and is connected to the screening bin shell (1) and located in the circumferential direction of the feeding channel (14), the fine screening barrel (3) is abutted to the partition plate (15) by the other end of each expansion roller (5), and a first limiting baffle (51) is arranged at one end, close to the feeding channel (14), of each expansion roller (5) so as to enable the fine screening barrel (3) to be abutted to the inner wall, located in the circumferential direction of the feeding channel (14), of the screening bin shell (1);

and the expansion driving mechanism (6) is connected to the screening bin shell (1) and is used for driving the expansion roller (5) to move towards the direction far away from the feeding channel (14).

2. The horizontal airflow screen of claim 1, wherein: one end of the expansion roller (5) deviating from the first limit baffle (51) is provided with a second limit baffle (52) parallel to the partition plate (15), a plurality of balls (53) are arranged on the second limit baffle (52), the balls (53) are abutted to the inner wall of the fine screening barrel (3), a plurality of limit grooves (16) used for limiting the movement tracks of the balls (53) one by one are arranged on the partition plate (15), and when the expansion driving mechanism (6) drives the expansion roller (5) to move towards the direction far away from the feeding channel (14), the balls (53) are always limited and slid in the same limit groove (16).

3. The horizontal airflow screen of claim 2, wherein: expansion actuating mechanism (6) include that a plurality of rotations are connected in rolling disc (61) and the drive outside screening storehouse casing (1) rolling disc (61) pivoted drive arrangement (62), the rotation axle center of rolling disc (61) is located outside feed channel (14), expansion roller (5) run through screening storehouse casing (1) is connected in the outer fringe of rolling disc (61), be provided with on screening storehouse casing (1) and supply expansion roller (5) to run through and spacing passageway (17) that slide.

4. The horizontal airflow screen of claim 3, wherein: drive arrangement (62) are including rotating annular carousel (621) of connecting outside screening storehouse casing (1), the outside of feed mechanism (2) is located and be concentric setting, a plurality of with feedstock channel (14) to annular carousel (621) cover rotating-disc (61) equipartition in the circumference of annular carousel (621), just the outer fringe of rotating-disc (61) has the outer tooth face that meshes mutually with annular carousel (621), be provided with locking device (63) that are used for locking annular carousel (621) on screening storehouse casing (1).

5. The horizontal airflow screen of claim 4, wherein: fine screening section of thick bamboo (3) have extend to in feed channel (14) and with first extension (31) of the inner wall butt of feed channel (14) and be connected and extend to screening storehouse casing (1) first turn-over portion (32) outside with first extension (31), first turn-over portion (32) press from both sides and locate between annular carousel (621) and screening storehouse casing (1), locking device (63) are including setting up in a plurality of locating parts (631) of annular carousel (621) week side and setting up retaining member (632) on locating part (631), locating part (631) are used for restricting and break away from each other between annular carousel (621), first turn-over portion (32) and the screening storehouse casing (1), just retaining member (632) are used for compressing tightly annular carousel (621) in first turn-over portion (32) or the pine takes off.

6. The horizontal airflow screen of claim 3, wherein: the outer edges of the first limiting baffle (51) and the second limiting baffle (52) are arranged in an arc shape, wherein the limiting channel (17) is always located in the projection of the first limiting baffle (51) in the process that the expansion roller (5) slides in the limiting channel (17).

7. The horizontal airflow screen of claim 3, wherein: the expanding roller (5) comprises a windward section (54) located between a first limiting baffle (51) and a second limiting baffle (52), and the cross section of the windward section (54) is in streamline arrangement.

8. The horizontal airflow screen of claim 7, wherein: the expanding roller (5) further comprises a connecting section (55) connected with the rotating disc (61), the windward section (54) is rotationally connected with the connecting section (55) and the windward section (54) is rotationally connected with the second limiting baffle (52), the windward section (54) is coaxially connected with an adjusting column (56) penetrating through the connecting section (55), and the adjusting column (56) is in damping connection with the connecting section (55).

9. The horizontal airflow screen of claim 1, wherein: the fine screening section of thick bamboo (3) have through intercommunication passageway (13) and extend to second turn-ups portion (34) in coarse screening storehouse (12), be provided with coarse screening section of thick bamboo (4) in coarse screening storehouse (12), coarse screening section of thick bamboo (4) are including coaxial flange portion (41), coarse screening portion (42) and the overhead cap portion (43) that connect gradually, flange portion (41) circumference is provided with a plurality of hollow spacing posts (44), overhead cap portion (43) are connected with to connecting piece (45) that radially extend and be connected with spacing post (44), flange portion (41) compress tightly second turn-ups portion (34) on baffle (15), run through in spacing post (44) and be provided with the fastening bolt who is connected with baffle (15), the tip of fastening bolt and the tip butt of spacing post (44).