CN113909117A

CN113909117A - Recycled aggregate multi-stage vibrating screen

Info

Publication number: CN113909117A
Application number: CN202111304324.0A
Authority: CN
Inventors: 张永梁; 王战; 徐连军; 王嘉晖; 徐强; 王迪; 缪文兵
Original assignee: Zhejiang Yubo New Material Co Ltd
Current assignee: Zhejiang Yubo New Material Co Ltd
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-01-11
Anticipated expiration: 2041-11-05
Also published as: CN113909117B

Abstract

The invention relates to the technical field of vibrating screen design, and discloses a recycled aggregate multistage vibrating screen which comprises a base, a screen box, a first support, a driving motor, a vibrator, a second support, a buffer spring, a first screen, a second screen and a third screen, wherein a support frame is arranged on the screen box and positioned at the lower side of the first screen, a support rod with the extending direction parallel to the extending direction of the support frame is arranged in the middle of the support frame, the first screen comprises two sub-screens positioned at two sides of the support rod respectively, two sides of the upper end of the support rod are provided with limiting plates extending downwards in an inclined mode, a connecting groove for embedding the side edge of the sub-screen is formed between the limiting plates and the support frame, and a connecting assembly for attaching the side edge of the sub-screen to the limiting plates is arranged on the support frame. The first screen mesh combined by the two side screen meshes can present a shape with a high middle and two low sides, so that the recycled aggregate is uniformly distributed on the surface of the first screen mesh, and the area of the first screen mesh is finally utilized.

Description

Recycled aggregate multi-stage vibrating screen

Technical Field

The invention relates to the technical field of design of vibrating screens, in particular to a recycled aggregate multistage vibrating screen.

Background

The vibrating screen is important equipment for grading solid materials, and is widely applied to industries such as mines, building materials, traffic, energy, chemical industry and the like; the working principle is as follows: the motor is flexibly connected with the coupling to enable the eccentric block of the vibration exciter in the vibrator to rotate at a high speed. The rotating eccentric block generates a large centrifugal force to excite the screen box to generate circular motion with certain amplitude, the oversize material is subjected to impulse transmitted by the screen box on the inclined screen surface to generate continuous throwing motion, and particles smaller than screen holes are enabled to pass through the screen in the process that the material meets the screen surface, so that classification is realized.

The recycled concrete aggregate contains aggregates with different particle sizes, and is usually screened by a vibrating screen during recycling, and meanwhile, particle shaping and physical strengthening are also carried out, so that high-quality recycled aggregate is obtained.

At present, publication number CN213825853, the chinese patent that the publication date is 2021, 7 months and 30 days discloses a shale shaker with multistage screening structure, including base component, motor and vibrator, base component top fixedly connected with screening subassembly, screening subassembly includes first hierarchical board, the top of first hierarchical board is through fixing clip fixedly connected with second hierarchical board, the top of second hierarchical board is through fixing clip fixedly connected with third hierarchical board, the left side fixedly connected with hopper of third hierarchical board, base component's top is provided with the motor, the other end fixedly connected with vibrator of motor, the outside fixedly connected with buffer spring of first hierarchical board.

The vibrating screen with the multi-stage screening structure utilizes the motor to drive the vibrator, the whole screening assembly is driven to vibrate through the vibrator, and meanwhile, the buffer spring is utilized to buffer the vibration of the screening assembly; wherein when the recycled aggregate was put in the screen assembly top, the intermediate position of screen assembly top was often selected to the input position of recycled aggregate, so recycled aggregate often spills the central point that falls in the screen cloth and puts, and the recycled aggregate along the screen cloth whereabouts often is located the center department of screen cloth this moment, so can make recycled aggregate at screen cloth surface uneven distribution, finally will be unfavorable for make full use of screen cloth area.

Disclosure of Invention

The invention aims to provide a recycled aggregate multistage vibrating screen which can be beneficial to fully utilizing the area of a first screen mesh, so that recycled aggregate falling on the first screen mesh is efficiently screened, and meanwhile, particle shaping and physical strengthening are carried out, so that high-quality recycled aggregate is obtained.

The technical purpose of the invention is realized by the following technical scheme: a recycled aggregate multistage vibrating screen comprises a base, a screen box positioned above the base, a first support arranged on the base, a driving motor arranged on the first support, a vibrator arranged on the screen box and connected with the driving motor through a belt, a second support arranged on the base and positioned at two sides of the screen box, a buffer spring arranged on the second support and connected with the screen box, a first screen positioned in the screen box and positioned at the upper side of the screen box, a second screen positioned in the screen box and positioned at the middle part of the screen box, and a third screen positioned in the screen box and positioned at the lower side of the screen box, wherein a support frame is arranged at the lower side of the first screen on the screen box, a support rod with an extending direction parallel to the extending direction of the support frame is arranged at the middle part of the support frame, the first screen comprises two sub-screen meshes respectively positioned at two sides of the support rod, and two sides of the upper end of the support rod are respectively provided with a limiting plate extending obliquely and downwards, the supporting frame is provided with a connecting assembly used for attaching the side edge of the screening net to the limiting plate.

The invention is further provided with: coupling assembling all is provided with the boss, sets up shaft hole, both ends on the boss including setting up on the support frame and being located the both ends of spread groove and pass the shaft hole respectively and penetrate the connecting axle in the spread groove, set up on the connecting axle and one side and connecting axle welded fastening turn over the board, set up on the side of dividing the screen cloth and supply the indent that the side rotation back embedding of turning over the board, the degree of depth of indent reduces gradually by outside orientation in the spread groove, the connecting axle is close to the week side of boss one side and is provided with the go-between, the cover is equipped with the reset spring that one end and go-between conflict and the other end contradict with the boss on the connecting axle, the connecting axle is close to reset spring's one end department and is provided with the profile of tooth post that is located the boss outside, the tooth groove that supplies the embedding of profile of tooth post and uses with the profile of tooth post cooperation is seted up in the week side that just is located the shaft hole on the boss.

The invention is further provided with: and one end of the tooth-shaped column, which is far away from the connecting shaft, is provided with a pull ring.

The invention is further provided with: be provided with many threaded shafts that are used for passing the branch screen cloth side on the side of support frame, many the threaded shafts is along the even interval distribution of extending direction of support frame, the epaxial lower extreme that is provided with of threaded shaft closes mouthful and upper end open-ended compresses tightly the cover, the lower extreme that compresses tightly the cover sets up the through-hole that supplies the threaded shaft to pass, threaded shaft goes up threaded connection has and is used for compressing tightly the gland nut that the cover compressed tightly on the branch screen cloth.

The invention is further provided with: the compressing sleeve is also provided with an end cover, and the periphery of the lower end of the end cover is provided with a mounting ring embedded in the compressing sleeve.

The invention is further provided with: the side of the end cover is provided with anti-skid stripes.

The invention is further provided with: the sieve incasement just is located the downside of second screen cloth and third screen cloth and all is provided with the mount, the upside that just is located second screen cloth and third screen cloth on the inner wall of sieve case both sides all is provided with the mounting panel, the cross-section of mounting panel is "Contraband" font and downside and sets up the bar groove that supplies second screen cloth or third screen cloth side embedding, be provided with the dead lever fixed with second screen cloth or third screen cloth side in the mounting panel, the regulation hole has all been seted up at the both ends of dead lever, the tip of mounting panel and the position department that corresponds the regulation hole have seted up threaded mounting hole, the mounting panel tip is provided with threaded connection and passes the screw thread adjusting lever of regulation hole at threaded mounting hole and lower extreme, the lower extreme of screw thread adjusting lever and the downside that is located the dead lever are provided with the stopper that the external diameter is greater than the regulation hole internal diameter.

The invention is further provided with: and the upper end of the threaded adjusting rod is provided with a knob.

The invention is further provided with: an operation opening is formed in one end position, close to the fixed rod, in the screen box, on the side wall of the screen box.

The invention is further provided with: the screen box is characterized in that third supports are arranged on the two sides of the screen box on the base, water spraying pipelines communicated with an external water network are arranged above the first screen and the second screen on the third supports, and a plurality of water spraying nozzles are arranged on the water spraying pipelines.

In conclusion, the invention has the following beneficial effects:

1. when the first screen is required to be arranged on the supporting frame, the first screen comprises two sub-screens which are respectively positioned at the two sides of the supporting rod, meanwhile, because the two sides of the upper end of the supporting rod are both provided with the limiting plates which extend obliquely downwards, after the side edges of the sub-screen meshes are embedded in the connecting grooves formed between the limiting plates and the supporting frames, the connecting component is further facilitated to attach the side edges of the screen separating nets to the limiting plate, the screen separating nets can be placed on the supporting frame along with the direction of the limiting plate in an inclined and downward mode, the first screen formed by combining the screen separating nets on the two sides can be in a shape with a high middle and two low sides, and therefore when the recycled aggregate is sprinkled on the center of the first screen, the recycled aggregate can be dispersed towards the two sides of the first screen, therefore, the recycled aggregate is uniformly distributed on the surface of the first screen, and the area of the first screen is finally utilized, so that the recycled aggregate falling on the first screen is screened efficiently;

2. when the side edge of the sub-screen is required to be attached to the limiting plate, an operator firstly embeds the side edge of the sub-screen into the connecting groove, then pulls the tooth-shaped column out of the tooth-shaped groove, then the tooth-shaped column can pull the connecting shaft, and the connecting ring on the connecting shaft can be pressed on the return spring, so that the return spring is elastically deformed; the tooth-shaped column can be rotated, so that the turning plate is driven to rotate through the connecting shaft, the depth of the press-in groove is gradually reduced from the direction from the inside to the outside of the connecting groove, the turning plate can be gradually turned towards the press-in groove along the direction of the press-in groove after rotating towards the connecting groove, and after the turning plate is turned into the end part of the press-in groove, the side edge of the sub-screen can be tightly pressed on the limiting plate, so that the side edge of the sub-screen is attached to the limiting plate; the tooth-shaped column can be loosened, the tooth-shaped column can be driven to be embedded into the tooth-shaped groove again under the action of the elastic restoring force of the return spring, the rotation of the tooth-shaped column can be limited through the matching of the tooth-shaped groove and the tooth-shaped column, and the tooth-shaped column is prevented from automatically rotating;

when the sub-screen is required to be disassembled, the tooth-shaped column is taken out from the tooth-shaped groove again, then the tooth-shaped column is rotated so that the turning plate is turned towards one side far away from the pressing groove, then the sub-screen can be loosened from the limiting plate, at the moment, the sub-screen can be quickly taken down from the supporting frame, and finally quick disassembly and replacement of the sub-screen can be facilitated;

3. the tooth-shaped column can be conveniently taken out from the tooth-shaped groove by utilizing the pull ring arranged on one end of the tooth-shaped column, which is far away from the connecting shaft;

4. because the sub-screen can be impacted repeatedly by the recycled aggregate in the using process, in order to stably fix the sub-screen on the support frame, the threaded shaft on the side edge of the support frame penetrates through the side edge of the sub-screen, then the through hole at the lower end of the compression sleeve is used for the threaded shaft to penetrate, and meanwhile, the compression nut is in threaded connection with the threaded shaft, so that the compression sleeve is compressed on the sub-screen through the compression nut, at the moment, the side edge of the sub-screen can be abutted against the support frame, and finally, the stable fixation of the sub-screen on the support frame can be facilitated;

5. after the compaction sleeve is compacted on the screening net by the compaction sleeve, the mounting ring at the lower end of the end cover is embedded in the compaction sleeve, so that the space in the compaction sleeve is sealed by the end cover, fine particles in the recycled aggregate are prevented from entering the compaction sleeve, and the assembly and disassembly of the compaction nut are prevented from being influenced;

6. the anti-slip stripes arranged on the peripheral side of the end cover are utilized, so that the end cover on the pressing sleeve can be conveniently taken down;

7. because the aperture ratio of the first screen is large, a steel plate material is often adopted, the apertures of the second screen and the third screen are small, the second screen and the third screen are often woven by metal wires or fiber wires, and are softer, so that after the second screen and the third screen are laid on the fixing frame, raised areas are easily formed on the surfaces of the second screen and the third screen, and the surfaces of the second screen and the third screen are uneven, and finally, the high-efficiency screening of recycled aggregates is not facilitated;

at the moment, the mounting plates which are arranged on the inner walls of the two sides of the screen box and are positioned at the upper sides of the second screen and the third screen are used for embedding the side edges of the second screen and the third screen into the strip-shaped grooves at the lower sides of the mounting plates, so that the side edges of the second screen and the third screen can be fixed at the lower sides of the fixed rods, the screw thread adjusting rods can move upwards in the screw thread mounting holes by rotating the screw thread adjusting rods, then the screw thread adjusting rods can drive the fixed rods to move upwards through the limiting blocks, finally, the second screen and the third screen can be tensioned, the smooth laying of the second screen and the third screen on the fixed frame is facilitated, and the efficient screening of the second screen and the third screen on the recycled aggregate is facilitated;

8. the knob arranged at the upper end of the threaded adjusting rod is utilized, and the threaded adjusting rod can be conveniently rotated due to the knob;

9. by utilizing the operation opening which is formed in the side wall of the screen box and is close to one end of the fixed rod in the screen box, when an operator needs to adjust the threaded adjusting rod which is positioned at one side in the screen box, the operator can screw the knob at the upper end of the threaded adjusting rod after passing through the operation opening;

10. because the regeneration aggregate has the dust when the whereabouts, will influence operational environment after these dusts scatter in the air, utilize the water spray pipeline that all set up with external water net intercommunication on the third support and the top that is located first screen cloth and second screen cloth this moment, can follow the water spray nozzle and spray out after the water spray pipeline intakes, finally can carry out the rivers to the regeneration aggregate of below and spray to the realization is to the clearance of dust.

Drawings

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

FIG. 2 is a schematic view of the present invention without the water spraying pipe;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a partial enlarged view of the connection among the supporting frames, the supporting rods, the limiting plates, the screening nets and the connecting components in the present invention;

FIG. 5 is a partial sectional view showing the connection among the support frame, the boss, the connecting shaft, the return spring, the tooth-shaped post and the flap in the present invention;

FIG. 6 is an enlarged view of portion B of FIG. 2;

FIG. 7 is a partial cross-sectional view showing the connection between the support frame, threaded shaft, clamping sleeve, end cap and sizing screen according to the present invention;

FIG. 8 is an enlarged view of portion C of FIG. 2;

FIG. 9 is a partial cross-sectional view showing the connection among the fixing frame, the mounting plate, the fixing rod, and the second screen according to the present invention;

FIG. 10 is a partial schematic view showing the connection between the water spray pipe and the water spray nozzle according to the present invention.

Reference numerals: 1. a base; 11. a first bracket; 111. a drive motor; 12. a second bracket; 121. a buffer spring; 13. a third support; 131. a water spray pipeline; 132. a water spray nozzle; 2. a screen box; 21. a vibrator; 22. a support frame; 221. a support bar; 222. a limiting plate; 223. connecting grooves; 224. a threaded shaft; 2241. a compression nut; 225. a compression sleeve; 2251. a through hole; 226. an end cap; 2261. a mounting ring; 2262. anti-skid stripes; 23. a fixed mount; 24. mounting a plate; 241. a strip-shaped groove; 242. a threaded mounting hole; 243. a threaded adjusting rod; 2431. a limiting block; 2432. a knob; 25. fixing the rod; 251. an adjustment hole; 26. an operation port; 3. a first screen; 31. separating a screen; 4. a second screen; 5. a third screen; 6. a connecting assembly; 61. a boss; 611. a toothed groove; 62. a shaft hole; 63. a connecting shaft; 631. a connecting ring; 632. a return spring; 633. a toothed column; 6331. a pull ring; 64. turning over a plate; 65. and pressing the groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A recycled aggregate multistage vibrating screen, referring to fig. 1 and 2, comprises a base 1, a screen box 2, a first support 11, a driving motor 111, a vibrator 21, a second support 12, a buffer spring 121, a first screen 3, a second screen 4 and a third screen 5, wherein the base 1 is fixed on the ground through anchor bolts, the screen box 2 is positioned above the base 1, the first support 11 is welded on the base 1 and positioned on one side of the screen box 2, and the driving motor 111 is fixed at the upper end of the first support 11 through bolts; wherein the vibrator 21 is installed on the sieve box 2 and is connected with the driving motor 111 through a belt, the vibrator 21 itself is a prior art, the specific structure of the vibrator is not repeated here, and the driving motor 111 drives the vibrator 21 to operate, so that the sieve box 2 vibrates.

Referring to fig. 1 and 2, the second support 12 is provided with four buffer springs 121, and the four buffer springs are welded to two sides of the base 1, wherein the buffer springs 121 are located at the upper end of the second support 12, one end of each buffer spring 121 is connected with the outer wall of the screen box 2, and the lower end of each buffer spring is connected with the second support 12; simultaneously first screen cloth 3 is located sieve case 2 and is located sieve case 2 upside, and second screen cloth 4 is located sieve case 2 and is located sieve case 2 middle part, and third screen cloth 5 is located sieve case 2 and is located sieve case 2 downside, can realize the multistage screening to the regeneration aggregate through first screen cloth 3, second screen cloth 4 and third screen cloth 5.

Referring to fig. 2, 3 and 4, the support frame 22 is welded on the lower side of the first screen cloth 3 on the screen box 2, the support frame 22 can support the first screen cloth 3, wherein a support rod 221 is integrally arranged on the upper side of the middle part of the support frame 22, the extending direction of the support rod 221 is parallel to the extending direction of the support frame 22, the first screen cloth 3 includes two sub-screens 31 respectively arranged on two sides of the support rod 221, a limit plate 222 extending obliquely and downwardly is integrally arranged on two sides of the upper end of the support rod 221, and a connecting groove 223 for embedding the side edge of the sub-screen 31 is formed between the limit plate 222 and the support frame 22.

Referring to fig. 2, 3, 4 and 5, the support frame 22 is further provided with a connecting assembly 6, the connecting assembly 6 can be used for attaching the side edge of the sub-screen 31 to the limiting plate 222, the connecting assembly 6 includes two bosses 61, a shaft hole 62, a connecting shaft 63, a turning plate 64 and a pressing groove 65, wherein the two bosses 61 are respectively welded on the support frame 22, the two bosses 61 are respectively located at two ends of the connecting groove 223, the shaft hole 62 is opened on the boss 61, two ends of the connecting shaft 63 respectively penetrate through the two shaft holes 62 and penetrate into the connecting groove 223, and at this time, the connecting shaft 63 can be rotatably connected between the bosses 61 at two sides; the turning plate 64 is provided with one side for the connecting shaft 63 to penetrate through and be welded and fixed with the connecting shaft 63, so that the connecting shaft 63 can drive the turning plate 64 to rotate, the pressing groove 65 is formed in the side edge of the sub-screen 31, the side edge of the turning plate 64 far away from the connecting shaft 63 can be embedded after being rotated by the pressing groove 65, and meanwhile, the depth of the pressing groove 65 is gradually reduced from the inside to the outside of the connecting groove 223; wherein, the connecting shaft 63 is welded with a connecting ring 631 on the side close to the boss 61, the connecting shaft 63 is sleeved with a return spring 632, one end of the return spring 632 abuts against the connecting ring 631 and the other end abuts against the boss 61, one end of the connecting shaft 63 close to the return spring 632 is welded with a tooth-shaped column 633 positioned outside the boss 61, wherein a tooth-shaped groove 611 for embedding the tooth-shaped column 633 is formed on the boss 61 and on the side close to the shaft hole 62, the tooth-shaped groove 611 is matched with the tooth-shaped column 633 for use, and one end of the tooth-shaped column 633 far away from the connecting shaft 63 is also welded with a pull ring 6331; when the return spring 632 is restored to a natural state, the tooth post 633 is embedded in the tooth groove 611.

Referring to fig. 2, 6 and 7, a plurality of threaded shafts 224 are further welded on the side edge of the support frame 22, the threaded shafts 224 can be used for penetrating through surface holes on the side edge of the sieving net 31, the plurality of threaded shafts 224 are uniformly distributed along the extending direction of the support frame 22 at intervals, wherein a pressing sleeve 225 with a closed lower end and an open upper end is further arranged on each threaded shaft 224, the pressing sleeve 225 is made of a plastic material, meanwhile, a through hole 2251 for the threaded shaft 224 to penetrate through is formed in the lower end of the pressing sleeve 225, and a pressing nut 2241 is connected to the threaded shaft 224 in a threaded manner; the pressing nut 2241 is located in the pressing sleeve 225 and is used for pressing the pressing sleeve 225 onto the screening net 31, and a gap is still reserved between the screening net 31 and the support frame 22 because the screening net 31 is in an inclined state at the moment; meanwhile, the pressing sleeve 225 is further provided with an end cover 226, the peripheral side of the lower end of the end cover 226 is integrally provided with a mounting ring 2261 embedded in the pressing sleeve 225, the mounting ring 2261 and the pressing sleeve 225 are in interference fit, and the peripheral side of the end cover 226 is provided with anti-slip stripes 2262.

Referring to fig. 2, 8 and 9, fixing frames 23 are welded on the lower sides of the second screen 4 and the third screen 5 in the screen box 2, the fixing frames 23 can be used for supporting the second screen 4 and the third screen 5, wherein mounting plates 24 are welded on the inner walls of the two sides of the screen box 2 and on the upper sides of the second screen 4 and the third screen 5, the extending direction of the mounting plates 24 is parallel to the extending direction of the mounting frames, the cross sections of the mounting plates 24 are in a shape of Contraband, strip-shaped grooves 241 for embedding the side edges of the second screen 4 or the third screen 5 are formed in the lower sides of the mounting plates 24, fixing rods 25 are further arranged in the mounting plates 24, the extending direction of the fixing rods 25 is parallel to the extending direction of the mounting plates 24, and the fixing rods 25 are tied up and fixed with the side edges of the second screen 4 or the third screen 5; the two ends of the fixed rod 25 are both provided with adjusting holes 251, the end of the mounting plate 24 is provided with a threaded mounting hole 242 at a position corresponding to the adjusting hole 251, the end of the mounting plate 24 is also provided with a threaded adjusting rod 243 which is in threaded connection with the threaded mounting hole 242, the lower end of the threaded adjusting rod 243 penetrates through the adjusting hole 251, the lower end of the threaded adjusting rod 243 is integrally provided with a limiting block 2431 which is positioned at the lower side of the fixed rod 25, and the limiting block 2431 is disc-shaped and has an outer diameter larger than the inner diameter of the adjusting hole 251; the knob 2432 is welded at the upper end of the threaded adjusting rod 243, an operation opening 26 is formed in one end of the side wall of the screen box 2, which is close to the fixing rod 25 and located in the screen box 2, and the knob 2432 at the upper end of the threaded adjusting rod 243 can be rotated through the operation opening 26.

Referring to fig. 1 and 10, third supports 13 are welded on the base 1 and located at two sides of the screen box 2, water spraying pipelines 131 are arranged on the third supports 13 and located above the first screen 3 and the second screen 4, the water spraying pipelines 131 are communicated with an external water network, a plurality of water spraying nozzles 132 are installed on the water spraying pipelines 131, the water spraying nozzles 132 are evenly distributed along the water spraying pipelines 131 at intervals, and the recycled aggregate screened below can be sprayed by the water spraying nozzles 132.

The principle is as follows: when the first screen 3 needs to be installed on the support frame 22, the first screen 3 is utilized to include two sub-screens 31 respectively located at two sides of the support rod 221, meanwhile, since the two sides of the upper end of the support rod 221 are both provided with the limit plates 222 extending obliquely downwards, after the side edges of the sub-screens 31 are embedded into the connecting grooves 223 formed between the limit plates 222 and the support frame 22, the tooth-shaped columns 633 are pulled out from the tooth-shaped grooves 611, then the connecting shafts 63 can be pulled by the tooth-shaped columns 633, and the connecting rings 631 on the connecting shafts 63 can be pressed on the return springs 632, so that the return springs 632 elastically deform; at this time, the tooth-shaped columns 633 can be rotated, so that the turning plate 64 is driven to rotate through the connecting shaft 63, because the depth of the press-in groove 65 is gradually reduced from the inward and outward direction of the connecting groove 223, the turning plate 64 can be gradually turned towards the press-in groove 65 along the direction of the press-in groove 65 after rotating towards the connecting groove 223, when the turning plate 64 is turned into the end part of the press-in groove 65, the side edge of the sub-screen 31 can be abutted against the limiting plate 222, so that the side edge of the sub-screen 31 is attached to the limiting plate 222, the sub-screen 31 can be obliquely and downwardly placed on the supporting frame 22 along the direction of the limiting plate 222, at this time, the first screen 3 formed by combining the sub-screens 31 at two sides can present a shape with a high middle and two low sides, therefore, when the recycled aggregate falls on the center position of the first screen 3, the recycled aggregate can be dispersed towards two sides of the first screen 3, so that the recycled aggregate is uniformly distributed on the surface of the first screen 3, it is finally advantageous to make full use of the area of the first screen 3 to efficiently screen the recycled aggregate falling on the first screen 3.

And when needs dismantle and divide screen cloth 31, take out tooth form post 633 from tooth form groove 611 again, thereby rotate tooth form post 633 consequently and make turn over board 64 towards far away the upset of indent 65 one side, divide screen cloth 31 to loosen with limiting plate 222 afterwards, divide screen cloth 31 to be taken off from support frame 22 fast this time, finally can be favorable to dividing quick assembly disassembly of screen cloth 31 to change.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a multistage shale shaker of recycled aggregate, including base (1), be located sieve case (2) of base (1) top, first support (11) of setting on base (1), driving motor (111) of setting on first support (11), set up on sieve case (2) and pass through vibrator (21) that the belt is connected with driving motor (111), set up second support (12) that just is located sieve case (2) both sides on base (1), set up buffer spring (121) that just is connected with sieve case (2) on second support (12), be located sieve case (2) and be located first screen cloth (3) of sieve case (2) upside, be located sieve case (2) and be located second screen cloth (4) at sieve case (2) middle part, be located sieve case (2) and be located third screen cloth (5) of sieve case (2) downside, its characterized in that: the utility model discloses a screen cloth, including screen box (2), support frame (22), bracing piece (221) that the extending direction is parallel of support frame (22) are provided with in the middle part of support frame (22), first screen cloth (3) include that two are located branch screen cloth (31) of bracing piece (221) both sides respectively, the both sides of bracing piece (221) upper end all are provided with slope downwardly extending's limiting plate (222), be formed with between limiting plate (222) and support frame (22) and supply to divide connecting groove (223) of screen cloth (31) side embedding, be provided with on support frame (22) and be used for will dividing coupling assembling (6) of laminating of screen cloth (31) side on limiting plate (222).

2. The recycled aggregate multistage vibrating screen of claim 1, wherein: the connecting assembly (6) comprises bosses (61) arranged at two ends of a support frame (22) and located in connecting grooves (223), shaft holes (62) formed in the bosses (61), connecting shafts (63) with two ends penetrating through the shaft holes (62) and penetrating into the connecting grooves (223), turning plates (64) arranged on the connecting shafts (63) and welded and fixed to one sides of the connecting shafts (63), and press-in grooves (65) formed in the side edges of the screening net (31) and used for being embedded after the side edges of the turning plates (64) rotate, the depth of the press-in grooves (65) is gradually reduced from the inward direction of the connecting grooves (223), connecting rings (631) are arranged on the side edges of the connecting shafts (63) close to one sides of the bosses (61), and return springs (632) with one ends abutted against the connecting rings (631) and the other ends abutted against the bosses (61) are sleeved on the connecting shafts (63), connecting axle (63) is close to the one end department of reset spring (632) and is provided with profile of tooth post (633) that are located boss (61) outside, on boss (61) and be located the week side of shaft hole (62) and offer supply profile of tooth post (633) embedding and with profile of tooth post (633) cooperation use tooth groove (611).

3. The recycled aggregate multistage vibrating screen of claim 2, wherein: and one end of the tooth-shaped column (633) far away from the connecting shaft (63) is provided with a pull ring (6331).

4. The recycled aggregate multistage vibrating screen of claim 1, wherein: be provided with many threaded shaft (224) that are used for passing sieve (31) side on the side of support frame (22), many threaded shaft (224) is along the even interval distribution of extending direction of support frame (22), be provided with on threaded shaft (224) lower extreme and close mouthful and upper end open-ended and compress tightly cover (225), the through-hole (2251) that supply threaded shaft (224) to pass are seted up to the lower extreme that compresses tightly cover (225), threaded shaft (224) is gone up threaded connection and is used for compressing tightly gland nut (2241) on sieve (31) with compressing tightly cover (225).

5. The recycled aggregate multistage vibrating screen of claim 4, wherein: the pressing sleeve (225) is further provided with an end cover (226), and a mounting ring (2261) embedded in the pressing sleeve (225) is arranged on the periphery of the lower end of the end cover (226).

6. The recycled aggregate multistage vibrating screen of claim 5, wherein: the periphery of the end cover (226) is provided with anti-skid stripes (2262).

7. The recycled aggregate multistage vibrating screen of claim 1, wherein: the sieve box (2) is internally provided with a fixing frame (23) at the lower sides of the second screen (4) and the third screen (5), the inner walls at the two sides of the sieve box (2) are arranged at the upper sides of the second screen (4) and the third screen (5) and are provided with mounting plates (24), the cross section of each mounting plate (24) is shaped like Contraband, the lower sides of the mounting plates are provided with strip-shaped grooves (241) for embedding the side edges of the second screen (4) or the third screen (5), fixing rods (25) fixed with the side edges of the second screen (4) or the third screen (5) are arranged in the mounting plates (24), adjusting holes (251) are respectively arranged at the two ends of each fixing rod (25), the end parts of the mounting plates (24) are provided with threaded mounting holes (242) at positions corresponding to the adjusting holes (251), threaded adjusting rods (243) which are in threaded connection in the threaded mounting holes (242) are arranged at the end parts of the mounting plates (24) and the lower ends of which pass through the adjusting holes (251) are arranged at the ends of the adjusting holes (251), and a limiting block (2431) with the outer diameter larger than the inner diameter of the adjusting hole (251) is arranged at the lower end of the threaded adjusting rod (243) and on the lower side of the fixing rod (25).

8. The recycled aggregate multistage vibrating screen of claim 7, wherein: the upper end of the threaded adjusting rod (243) is provided with a knob (2432).

9. The recycled aggregate multistage vibrating screen of claim 8, wherein: an operation opening (26) is formed in one end position, close to the fixing rod (25), in the screen box (2), on the side wall of the screen box (2).

10. The recycled aggregate multistage vibrating screen of claim 1, wherein: the sieve box is characterized in that third supports (13) are arranged on the base (1) and located on two sides of the sieve box (2), water spraying pipelines (131) communicated with an external water net are arranged above the third supports (13) and located on the first sieve net (3) and the second sieve net (4), and a plurality of water spraying nozzles (132) are arranged on the water spraying pipelines (131).