CN213996662U

CN213996662U - Vibrating screen

Info

Publication number: CN213996662U
Application number: CN202021929493.4U
Authority: CN
Inventors: 丁天武; 张永进; 丁力; 乐祥栋; 夏争辉; 杨坤鹏
Original assignee: Wuhan Chengyan Technology Co ltd
Current assignee: Wuhan Chengyan Technology Co ltd
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2021-08-20
Anticipated expiration: 2030-09-07

Abstract

The utility model relates to a vibrating screen, which comprises a fixed frame and a vibrating groove, wherein a sieve pore plate is arranged at the opening at the upper end of the vibrating groove, the lower end of the vibrating groove is open without a bottom plate, a conveying belt is arranged below the vibrating groove, the vibrating groove moves, and materials or powder screened out by the sieve pore plate fall onto the conveying belt from sieve pores; be equipped with the automatic cleaning device of sieve mesh between orifice plate and the conveyor belt, the automatic cleaning device of sieve mesh reciprocating motion all around shears and cleans and brushes the bottom surface sieve mesh of orifice plate through brush and sword strip, clears away the material that blocks up the sieve mesh on line. Through power unit drive sieve mesh automatic cleaning device reciprocating motion all around, make a round trip to cut and clean the bottom surface sieve mesh of orifice plate through brush and sword strip above that, clear away the material that blocks up the sieve mesh on line, in time will expect the clear discharge shale shaker export of end to overcome and expect that the end is hidden to be piled up and breed the cigarette worm in the sieve that shakes, avoided the quick-witted damage that cleans of tearing open, reduce intensity of labour, improve work efficiency, promote product quality.

Description

Vibrating screen

Technical Field

The utility model relates to a material processing technology field, in particular to shale shaker.

Background

A common vibrating screen comprises a fixed frame and a vibrating body, wherein a group of swing rods or reeds are respectively arranged on two sides of the fixed frame, two sides of a vibrating groove body are correspondingly connected and arranged at the upper ends of the swing rods or reeds, the middle parts of the swing rods are arranged on the fixed frame, and the lower ends of the swing rods are connected and arranged with a balance frame. And a sieve plate meeting the material sieving requirement is arranged in the vibration groove. The vibrating screen for screening multi-stage materials is respectively provided with a plurality of layers of screen plates with different models. The working process is as follows: the motor, the speed reducer and the crankshaft are arranged on the fixed frame, and the groove body is pushed to make an elliptical motion track through the transmission of the connecting rod so as to vibrate the vibrating screen.

When the screened materials are conveyed to the vibrating sieve pores through the equipment of the upper-stage process, the materials in the vibrating sieve are thrown upwards and forwards in the vibrating mode of the elliptic motion trail. The material that is less than the sieve mesh then falls on the bottom plate below the sieve mesh, then moves to ejection of compact direction than the material that the sieve mesh is big, makes its purpose of realizing evenly carrying and screening.

Because the process paths and the process sequences adopted by some materials (such as tobacco and other filiform materials) in the production process are different, the water content of each process section is different. The shapes of materials to be screened are irregular, the critical materials with the outer truncated circles close to the separation points have larger volume difference with the critical materials with the mesh sizes of the mesh holes, the weights of the materials with different densities are different, the bouncing capability of the materials on the vibrating screen hole plate is strong and weak, partial materials are easy to be clamped in the mesh holes of the mesh plate to block the mesh holes, and especially, cone-shaped materials and prod-shaped materials are clamped in the mesh holes and are difficult to fall.

In the continuous production process, the screen holes are cleaned before starting up, so that the screening function can be maintained for a period of time after the feeding is started. However, after the vibrating screen works on line for a period of time, the vibrating screen can reduce the screening effect or lose the screening function due to the reasons, and the quality of the product is seriously affected.

Moreover, the powdered material below the screen holes of the vibrating screen has weak elasticity and poor motion state. Particularly, the material powder with high moisture content is not easy to be completely conveyed out by the vibrating screen, and part of the material powder always remains on the inner bottom plate of the vibrating screen and is accumulated. In addition, the vibrating screen and the screen holes form a hexahedral cuboid, five faces of the cuboid are closed, and only the discharge hole is formed. If the powder of not clearing the material then can breed the cigarette worm in the shale shaker, clean the powder in the shale shaker and must dismantle the orifice plate and just can clean. The disassembly is complicated, the sieve plate is damaged at one time, and the labor intensity is high, and the cleaning is inconvenient.

SUMMERY OF THE UTILITY MODEL

For solving the above problem, the utility model provides a vibrating screen, this vibrating screen can clear up the sieve mesh on line and clear up the material end (powder) on line, make the vibrating screen ensure categorised screening function all the time in whole production process, avoid the sieve mesh to block up to improve the screening effect.

The utility model adopts the technical proposal that: the utility model provides a vibrating screen, includes fixed frame and the vibration groove of setting in fixed frame, be equipped with the vibration mechanism who is used for driving the vibration groove motion in the fixed frame, its characterized in that: a sieve plate is arranged at an opening at the upper end of the vibration groove, swing rod mechanisms are symmetrically arranged on two sides of the fixed rack, the upper ends of the swing rod mechanisms are correspondingly connected with two sides of the vibration groove, the middle parts of the swing rod mechanisms are arranged on the fixed rack, and the lower ends of the swing rod mechanisms are connected with the balance frame;

the lower end of the vibration groove is open without a bottom plate, a conveying belt is arranged below the vibration groove, the vibration groove moves, and materials or powder screened out through the sieve pore plate fall onto the conveying belt from the sieve pore; and an automatic sieve mesh cleaning device is arranged between the sieve mesh plate and the conveying belt and reciprocates back and forth, so that the sieve mesh on the bottom surface of the sieve mesh plate is sheared and cleaned back and forth through the hairbrush and the cutter bar, and materials blocking the sieve mesh are removed on line.

Preferably, the automatic sieve mesh cleaning device comprises a ladder frame, the longitudinal two sides of the ladder frame are arranged in ladder frame rails, the ladder frame rails are fixed on the inner side wall of the vibration groove, and the ladder frame is driven by a power mechanism to enable the whole ladder frame to move back and forth in the ladder frame rails.

Further, the ladder frame transversely evenly is equipped with many ladder frame cross linings, ladder frame cross lining and the strengthening rib synchronous arrangement of orifice plate set up a ladder frame cross lining between two adjacent orifice plate strengthening ribs at least, brush and sword strip set up on ladder frame cross lining.

Preferably, the swing rod mechanism adopts a swing rod or a reed.

Preferably, a feed hopper is arranged at a feed inlet of the sieve plate, and a receiving hopper is arranged at a discharge outlet of the sieve plate.

Preferably, the automatic cleaning device for the sieve pores is driven by electric power, pneumatic power or hydraulic pressure, and is controlled by the control unit to move back and forth repeatedly.

Preferably, the lower eaves of the vibration grooves on the two sides of the vibration grooves are connected with the upper eaves of the fixed frame on the two sides of the fixed frame through a closed soft curtain and are fixed through screws and closed pressing strips.

The utility model discloses the beneficial effect who gains is: set up the automatic cleaning device of sieve mesh between orifice plate bottom and conveyor belt, through power unit drive automatic cleaning device of sieve mesh reciprocating motion all around, make a round trip to cut and clean the bottom surface sieve mesh of orifice plate through brush and sword strip above that, clear away the material that blocks up the sieve mesh on line, in time will expect the clear discharge shale shaker export of end. Thereby overcome the material end and hide and pile up breeding the cigarette worm in shaking the sieve, avoided the quick-witted damage of cleaning of tearing open, reduce intensity of labour, improve work efficiency, it has positive meaning to promote product quality.

Drawings

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

FIG. 2 is an elevational view of FIG. 1;

FIG. 3 is a rear view of FIG. 1;

FIG. 4 is a plan view of the automatic cleaning device for sieve holes;

FIG. 5 is an elevational view of FIG. 4;

FIG. 6 is a rear view of FIG. 4;

FIG. 7 is a schematic view of a brush and blade configuration;

FIG. 8 is a schematic view of a belt conveyor configuration;

FIG. 9 is an enlarged view taken at A in FIG. 2;

reference numerals: 1. fixing the frame; 2. a swing reed; 3. vibrating the trough body; 4. the top of the upper end of the swing rod; 5. the middle part of the swing rod; 6. the tail part of the lower end of the swing rod; 7. a balancing stand; 8. a perforated screen; 9. a feed inlet; 10. a discharge port; 11. a vibration mechanism; 12. a belt conveyor motor; 13. a belt conveyor tensioning mechanism; 14. a belt supporting plate; 15. a receiving hopper; 16. a conveyor belt; 17. automatic cleaning device of the sieve pore; 18. a screen mesh plate reinforcing rib; 19. a ladder frame cross liner; 20. a ladder frame; 21. a brush; 22. a blade bar; 23. a ladder rail; 24. closing the soft curtain; 25. a lower edge of the vibration groove; 26. fixing the upper brim of the frame; 27. a layering screw; 28. and closing the pressing strip.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-9, the utility model discloses a vibrating screen, including fixed frame 1 and the vibration groove 3 of setting on fixed frame 1, be equipped with the vibration mechanism 11 that is used for driving the motion of vibration groove 3 on the fixed frame 1, the fixed band conveyer that is equipped with on the fixed frame 1, combine fig. 8 to show, band conveyer includes belt feeder motor 12, belt feeder straining device 13, belt layer board 14 and conveyor belt 16, belt feeder motor 12, belt feeder straining device 13, the equal fixed mounting of belt layer board 14 is on fixed frame 1, conveyor belt 16 is in vibration groove 3 below position, belt feeder motor 12 drives conveyor belt 16 through the belt pulley and moves, belt feeder straining device 13 is used for tensioning conveyor belt 16, belt layer board 14 is used for holding conveyor belt 16, prevent that conveyor belt 16 from weighing down.

The vibration groove 3 is positioned right above the conveying belt 16, the upper end is provided with a sieve plate 8, and the lower end is open without a bottom plate; the sieve mesh plate 8 can be multilayer, and different sieve mesh sizes can be selected for use on every layer, and the sieve mesh diameter diminishes gradually from top to bottom, carries out multistage screening to the material on the sieve mesh plate 8. Swing rod mechanisms 2 (adopting a swing rod or reed structure) are symmetrically arranged on two sides of the fixed rack 1, the upper ends 4 of the swing rod mechanisms are correspondingly connected with two sides of the vibration groove 3, the middle part 5 of the swing rod mechanism is arranged on the fixed rack 1, the lower ends 6 of the swing rod mechanisms are connected with a balance frame 7, and the balance frame 7 is arranged on the fixed rack 1.

The vibration mechanism 11 drives the vibration groove 3 to move, and materials or powder screened out through the sieve pore plate 8 fall onto the conveying belt 16 through sieve pores; an automatic sieve mesh cleaning device 17 is arranged between the sieve mesh plate 8 and the conveying belt 16, the automatic sieve mesh cleaning device 17 reciprocates back and forth, and the sieve mesh on the bottom surface of the sieve mesh plate 8 is sheared and cleaned back and forth through a hairbrush 21 and a cutter bar 22 on the automatic sieve mesh cleaning device, so that materials blocking the sieve mesh are removed on line.

In the embodiment shown in fig. 4-7, the automatic sieve mesh cleaning device 17 comprises the ladder frame 20, the longitudinal two sides of the ladder frame 20 are arranged in the ladder frame rails 23, the ladder frame rails 23 are fixed on the inner side wall of the vibration groove 3, and the ladder frame rails 23 can restrict the vertical movement of the ladder frame 20 and simultaneously ensure that the distance between the ladder frame 20 and the sieve mesh plate 8 is kept constant. The ladder frame 20 is driven by a power mechanism, so that the whole ladder frame 20 moves back and forth in the ladder frame rails 23. The ladder frame 20 is transversely evenly equipped with many ladder frame cross linings 19, and ladder frame cross lining 19 and sieve pore board strengthening rib 18 synchronous alignment set up a ladder frame cross lining 19 between two adjacent sieve pore board strengthening ribs 18 at least, and brush 21 and sword strip 22 set up on ladder frame cross lining 18.

In this embodiment, the automatic cleaning device 17 for sieve holes is driven by electric, pneumatic or hydraulic power, and is controlled by the control unit to move back and forth repeatedly.

Referring to fig. 9, the lower vibrating trough eaves 25 at the two sides of the vibrating trough 3 are connected with the upper fixed rack eaves 26 at the two sides of the fixed rack through a closed soft curtain, and are fixed through screws 27 and a closed pressing strip 28, so that the materials are prevented from flying apart from the gap between the vibrating trough 3 and the fixed rack 1 due to the airflow disturbance caused by the vibrating trough 3.

The feed inlet 9 of the sieve plate 8 is provided with a feed hopper, and the discharge outlet 10 is provided with a receiving hopper 15.

In the working process, materials to be screened are conveyed by equipment of the upper-stage process and are put into the feeding hopper to the sieve plate 8, and the materials on the sieve plate 8 are thrown upwards and forwards by vibration of the vibrating mechanism 11 to form an elliptical motion track. The materials smaller than the sieve holes fall below the sieve holes, and the materials larger than the sieve holes move forwards, so that the classified conveying and sieving functions are realized.

The utility model discloses a shale shaker can clear up the sieve mesh on line and clear up the material end (powder) on line, makes the shale shaker ensure classified screening function all the time in whole production process, avoids the sieve mesh to block up to improve the screening effect. The sieve export that shakes is just in time discharged with the material end on line like this to overcome the tobacco end and hide and pile up breeding the tobacco worm in the sieve that shakes, avoided the quick-witted damage of cleaning of tearing open, reduce intensity of labour, improve work efficiency, it has positive meaning to promote product quality.

The foregoing shows and describes the general principles and principal structural features of the invention. The present invention is not limited by the above-mentioned examples, and the present invention can be modified in various ways without departing from the spirit and scope of the present invention, and these modifications and improvements fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a vibrating screen, includes fixed frame and the vibration groove of setting in fixed frame, be equipped with the vibration mechanism who is used for driving the vibration groove motion in the fixed frame, its characterized in that: a sieve plate is arranged at an opening at the upper end of the vibration groove, swing rod mechanisms are symmetrically arranged on two sides of the fixed rack, the upper ends of the swing rod mechanisms are correspondingly connected with two sides of the vibration groove, the middle parts of the swing rod mechanisms are arranged on the fixed rack, and the lower ends of the swing rod mechanisms are connected with the balance frame;

2. The vibratory screen of claim 1, wherein: the automatic cleaning device for the sieve holes comprises a ladder frame, wherein the longitudinal two sides of the ladder frame are arranged in ladder frame rails, the ladder frame rails are fixed on the inner side walls of the vibration grooves, and the ladder frame is driven by a power mechanism to enable the whole ladder frame to move back and forth in the ladder frame rails.

3. The vibratory screen of claim 2, wherein: the ladder frame is transversely evenly equipped with many ladder frame cross liners, the reinforcing rib synchronous alignment of ladder frame cross liner and orifice plate sets up a ladder frame cross liner at least between two adjacent orifice plate reinforcing ribs, brush and sword strip setting are on the ladder frame cross liner.

4. The vibratory screen of claim 1, wherein: the swing rod mechanism adopts a swing rod or a reed.

5. The vibratory screen of claim 1, wherein: the feed inlet of orifice plate is equipped with the feeder hopper, and the discharge gate is equipped with and connects the hopper.

6. The vibratory screen of claim 1, wherein: the automatic cleaning device for the sieve pores is driven by electric, pneumatic or hydraulic pressure and is controlled by the control unit to move back and forth repeatedly.

7. The vibratory screen of claim 1, wherein: the lower eaves of the vibration grooves on the two sides of the vibration grooves are connected with the upper eaves of the fixed rack on the two sides of the fixed rack through a closed soft curtain and are fixed through screws and closed pressing strips.