CN219073548U - Double-shaft complex frequency multielement sieve - Google Patents

Abstract

The utility model provides a double-shaft complex-frequency multi-element sieve, which belongs to the technical field of screening equipment, and comprises a box body, wherein a feed inlet is formed in the box body, a plurality of screening mechanisms for screening materials are arranged in the box body in a vertically staggered manner, a plurality of driving mechanisms for driving the screening mechanisms to operate are arranged on the side surface of the box body, and a cab apron for enabling the materials to slide onto the screening mechanisms is obliquely arranged at the feed inlet in the box body; the materials on the third sieve plate and the fourth sieve plate after screening jump to downstream equipment, and the materials which pass through the sieve enter the material receiving bin as well, so that the high-efficiency screening of the materials is realized, and the multi-granularity classification can be realized by a single equipment, so that the cost and the space on site of a customer are saved.

Description

Double-shaft complex frequency multielement sieve

Technical Field

The utility model relates to the technical field of screening equipment, in particular to a double-shaft complex frequency multi-element screen.

Background

The domestic circulating fluidized bed power plant coal conveying technology sometimes needs materials with various granularity, when small-granularity materials such as small-granularity raw coal, coke and the like with the granularity of about 3-10mm are screened, common vibrating screens, drum screens and oscillating screens are generally used for screening the small-granularity materials such as the small-granularity raw coal, the coke and the like, but the devices cannot screen large amounts of fine-granularity raw coal with high efficiency and cannot realize multi-granularity classification, and if the multi-granularity classification of the materials is realized, the multi-granularity classification cannot be realized only by combining a plurality of vibrating screens.

Disclosure of Invention

In view of the above, the utility model provides a double-shaft complex frequency multi-element screen, which not only can screen large amounts of fine-grained materials with high efficiency, but also can realize multi-granularity classification by a single device, thereby saving cost and customer site space.

In order to solve the technical problems, the utility model provides a double-shaft complex-frequency multi-element sieve, which comprises a box body, wherein a feed inlet is formed in the box body, a plurality of screening mechanisms for screening materials are arranged in the box body in a vertically staggered manner, a plurality of driving mechanisms for driving the screening mechanisms to operate are arranged on the side surface of the box body, and a cab apron for enabling the materials to slide onto the screening mechanisms is obliquely arranged at the feed inlet in the box body.

Preferably, the number of screening mechanisms is two, a first screening assembly and a second screening assembly, respectively.

Preferably, the first screening assembly comprises a first screening plate movably mounted in the box body, a second screening plate is movably connected below the first screening plate, and the first screening plate and the second screening plate are arranged at intervals.

Preferably, the second screening assembly comprises a third screening plate movably connected in the box, a fourth screening plate is movably connected to the lower portion of the third screening plate at intervals, one end of the third screening plate facing the first screening plate is located below the first screening plate so as to receive materials on the first screening plate, and one end of the fourth screening plate facing the second screening plate is located below the second screening plate so as to receive materials on the second screening plate.

Preferably, the number of the driving mechanisms is two, namely a first driving assembly and a second driving assembly, wherein the first driving assembly is used for driving the first screening assembly to operate, and the second driving assembly is used for driving the second screening assembly to operate.

Preferably, the first driving assembly comprises a first support, a first driving motor is arranged on the first support, a first vibration exciter for driving the first sieve plate to vibrate is arranged at the output end of the first driving motor through a first coupling, first supporting plates are respectively arranged at two sides corresponding to the box body, first spring seats are arranged on the first supporting plates, the first vibration exciter is fixedly arranged on the first spring seats, a second support is arranged at one side of the first support at intervals, a second driving motor is arranged on the second support, a second vibration exciter for driving the second sieve plate to vibrate is arranged at the output end of the second driving motor through a second coupling, second supporting plates are respectively arranged on the corresponding side faces of the box body, a second spring seat is arranged on the second supporting plates, and the second vibration exciter is fixedly arranged on the second spring seats.

Preferably, the second driving assembly comprises a third support, a third driving motor is arranged on the third support, third supporting plates are symmetrically arranged on the corresponding side faces of the box body, third spring seats are arranged on the third supporting plates, third vibration exciters for driving the third sieve plates to vibrate are fixedly arranged on the third spring seats, the third driving motor drives the third vibration exciters to operate through third couplings, a fourth spring seat is arranged on one side of the third support, a fourth vibration exciter for driving the fourth sieve plates to vibrate is fixedly arranged on the fourth spring seat, and a fourth driving motor is arranged on the side face of the box body and drives the fourth vibration exciters to operate through the fourth couplings.

The technical scheme of the utility model has the following beneficial effects: when the material (raw coal or other small-granularity materials) is required to be screened, the material is poured into a feed inlet and falls onto a first screen plate through a cab apron, a first driving motor drives a first vibration exciter to generate eccentric exciting force to drive the first screen plate to vibrate, the material to be screened is screened, a second driving motor drives the second screen plate to vibrate through the second vibration exciter, the material to be screened falls into a receiving bin, the material positioned on the first screen plate and the second screen plate respectively jumps onto a third screen plate and a fourth screen plate to be screened again, the material positioned on the third screen plate and the fourth screen plate after screening jumps onto downstream equipment, the material to be screened also enters into the receiving bin, and further high-efficiency screening of the material is realized, multiple-granularity classification can be realized by a single equipment, and the cost and the space on site of a customer are saved.

Drawings

FIG. 1 is a schematic diagram of a front view of a dual-axis complex frequency multi-element screen according to the present utility model;

FIG. 2 is a schematic diagram of a cross-sectional front view of a dual-axis complex frequency multi-element screen according to the present utility model;

FIG. 3 is a schematic top view of a dual-axis multiple-frequency multi-element screen of the present utility model;

fig. 4 is an enlarged schematic view of the structure of fig. 2 at a in the present utility model.

In the figure: 1. a case; 2. a feed inlet; 3. a ferry plate; 4. a first screen plate; 5. a second screen plate; 6. a third screen plate; 7. a fourth screening plate; 8. a first bracket; 9. a first driving motor; 10. a first coupling; 11. a first vibration exciter; 12. a first pallet; 13. a first spring seat; 14. a second bracket; 15. a second driving motor; 16. a second coupling; 17. a second vibration exciter; 18. a second pallet; 19. a second spring seat; 20. a third bracket; 21. a third driving motor; 22. a third pallet; 23. a third spring seat; 24. a third vibration exciter; 25. a third coupling; 27. a fourth driving motor; 29. a fourth spring seat; 30. a fourth vibration exciter; 31. and a fourth coupling.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to fig. 1 to 4 of the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the utility model, fall within the scope of protection of the utility model.

As shown in fig. 1-4: the double-shaft complex-frequency multi-element sieve comprises a box body 1, wherein a feed inlet 2 is formed in the box body 1, a plurality of screening mechanisms for screening materials are arranged in the box body 1 in a vertically staggered mode, a plurality of driving mechanisms for driving the screening mechanisms to operate are arranged on the side face of the box body 1, and a cab apron 3 for enabling the materials to slide onto the screening mechanisms is obliquely arranged at the feed inlet 2 in the box body 1.

In this embodiment, the quantity of screening mechanism is two, is first screening subassembly and second screening subassembly respectively, and first screening subassembly is used for carrying out first screening to the material, and the material that is located on first sieve 4 and second sieve 5 after the screening slides to third sieve 6 and fourth sieve 7 and carries out the screening again, and then realizes the multistage screening to the material.

In this embodiment, the first screening assembly includes a first screening deck 4 movably mounted in the casing 1, a second screening deck 5 is movably connected to a lower portion of the first screening deck 4, and the first screening deck 4 and the second screening deck 5 are disposed at intervals.

Specifically, the second screening assembly includes a third screening plate 6 movably connected in the box 1, a fourth screening plate 7 is movably connected at intervals below the third screening plate 6, one end of the third screening plate 6, which faces the first screening plate 4, is located below the first screening plate 4 so as to receive materials on the first screening plate 4, and one end of the fourth screening plate 7, which faces the second screening plate 5, is located below the second screening plate 5 so as to receive materials on the second screening plate 5.

Wherein, the installation mode of first sieve 4, second sieve 5, third sieve 6 and fourth sieve 7 movable mounting in box 1 is prior art, and detailed description is not repeated here, in addition, the below that is located second sieve 5 and fourth sieve 7 in box 1 has placed the receipts feed bin respectively to be used for receiving the material that sieves from second sieve 5 and fourth sieve 7 and fall down.

In this embodiment, the number of the driving mechanisms is two, and the driving mechanisms are a first driving assembly and a second driving assembly respectively, where the first driving assembly is used to drive the first screening assembly to operate, and the second driving assembly is used to drive the second screening assembly to operate.

Specifically, the first driving assembly comprises a first support 8, a first driving motor 9 is arranged on the first support 8, a first vibration exciter 11 for driving the first sieve plate 4 to vibrate is arranged at the output end of the first driving motor 9 through a first coupler 10, first supporting plates 12 are respectively arranged on two corresponding sides of the box body 1, first spring seats 13 are arranged on the first supporting plates 12, the first vibration exciter 11 is fixedly arranged on the first spring seats 13, second supports 14 are arranged on one sides of the first support 8 at intervals, a second driving motor 15 is arranged on the second supports 14, a second vibration exciter 17 for driving the second sieve plate 5 to vibrate is arranged at the output end of the second driving motor 15 through a second coupler 16, second supporting plates 18 are respectively arranged on corresponding sides of the box body 1, second spring seats 19 are arranged on the second supporting plates 18, and the second vibration exciter 17 is fixedly arranged on the second spring seats 19.

Specifically, the second driving assembly comprises a third support 20, a third driving motor 21 is arranged on the third support 20, a third supporting plate 22 is symmetrically arranged on the corresponding side face of the box body 1, a third spring seat 23 is arranged on the third supporting plate 22, a third vibration exciter 24 for driving the third sieve plate 6 to vibrate is fixedly arranged on the third spring seat 23, the third driving motor 21 drives the third vibration exciter 24 to operate through a third coupling 25, a fourth spring seat 29 is arranged on one side of the third support 20, a fourth vibration exciter 30 for driving the fourth sieve plate 7 to vibrate is fixedly arranged on the fourth spring seat 29, a fourth driving motor 27 is arranged on the side face of the box body 1, and the fourth driving motor 27 drives the fourth vibration exciter 30 to operate through a fourth coupling 31.

The specific structure and installation manner of the first exciter 11, the second exciter 17, the third exciter 24 and the fourth exciter 30 are well known to those skilled in the art, and thus are not described in detail herein.

Under the conditions of lower moisture and lower ash content of raw coal, as the raw coal has no binding force or very small binding force between the raw coal and the screen, the raw coal has good fluidity, and as long as the raw coal particles are smaller than the size of the screen holes, the particles and the screen have relative movement speed, and the raw coal particles smaller than the screen holes can be thoroughly screened. However, the screening process for wet raw coal is quite different. The viscosity of raw coal is increased, so that loosening and layering are difficult, the fluidity of the raw coal is poor, and at the moment, the raw coal and a screen mesh are required to have enough acceleration so as to be likely to be loosened and layered. However, the acceleration is insufficient, because the wet-sticky raw coal needs space and time in the process of sieving, the sieve surface vibrates too fast, the raw coal cannot be thrown, and the sieving effect is not achieved finally. In addition, the particle screening is completed in a time required, so that the first screening component and the second screening component are driven by the first driving component and the second driving component respectively to realize the effects of large amplitude, large vibration intensity and low vibration frequency of the low-frequency screen, and wet sticky raw coal can be screened.

The working principle of the utility model is as follows: when the material (raw coal or other small-granularity materials) is required to be screened, the material is poured into the feed inlet 2, the material slides onto the first screen plate 4 through the cab apron 3, the first driving motor 9 drives the first vibration exciter 11 to generate eccentric exciting force to drive the first screen plate 4 to vibrate, the screened material falls onto the second screen plate 5, the second driving motor 15 drives the second screen plate 5 to vibrate through the second vibration exciter 17, the screened material falls into the receiving bin, the materials on the first screen plate 4 and the second screen plate 5 respectively jump onto the third screen plate 6 and the fourth screen plate 7 to be screened again, the screened material on the third screen plate 6 and the fourth screen plate 7 also jump onto downstream equipment, the screened material also enters into the receiving bin, further high-efficiency screening of the material is realized, multiple granularity classification can be realized by a single equipment, and cost and space on site of customers are saved.

In the present utility model, unless explicitly specified and defined otherwise, for example, it may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the present utility model.

Claims (7)

1. A biax complex frequency multiple element sieve, characterized by: the screening device comprises a box body, wherein a feed inlet is formed in the box body, a plurality of screening mechanisms for screening materials are arranged in the box body in a vertically staggered mode, a plurality of driving mechanisms for driving the screening mechanisms to operate are arranged on the side face of the box body, and a cab apron for enabling the materials to slide onto the screening mechanisms is obliquely arranged at the feed inlet in the box body.

2. The dual-axis complex frequency multi-element screen of claim 1, wherein: the number of screening mechanisms is two, namely a first screening assembly and a second screening assembly.

3. The dual-axis complex frequency multi-element screen of claim 2, wherein: the first screening component comprises a first screening plate movably arranged in the box body, a second screening plate is movably connected below the first screening plate, and the first screening plate and the second screening plate are arranged at intervals.

4. A dual-axis complex frequency multi-element screen as recited in claim 3, wherein: the second screening subassembly includes swing joint's third sieve in the box, the below interval swing joint of third sieve has the fourth sieve, the one end of third sieve orientation first sieve is located the below of first sieve to receive the material on the first sieve, the one end of fourth sieve orientation second sieve is located the below of second sieve, so as to receive the material on the second sieve.

5. The dual-axis complex frequency multi-element screen of claim 4, wherein: the number of the driving mechanisms is two, namely a first driving assembly and a second driving assembly, wherein the first driving assembly is used for driving the first screening assembly to operate, and the second driving assembly is used for driving the second screening assembly to operate.

6. The dual-axis complex frequency multi-element screen of claim 5, wherein: the first driving assembly comprises a first support, a first driving motor is arranged on the first support, a first vibration exciter for driving the first sieve plate to vibrate is arranged at the output end of the first driving motor through a first coupling, first supporting plates are respectively arranged on two sides corresponding to the box body, first spring seats are arranged on the first supporting plates, the first vibration exciter is fixedly arranged on the first spring seats, a second support is arranged on one side of the first support at intervals, a second driving motor is arranged on the second support, a second vibration exciter for driving the second sieve plate to vibrate is arranged at the output end of the second driving motor through a second coupling, second supporting plates are respectively arranged on the corresponding side faces of the box body, second spring seats are arranged on the second supporting plates, and the second vibration exciter is fixedly arranged on the second spring seats.

7. The dual-axis complex frequency multi-element screen of claim 6, wherein: the second driving assembly comprises a third support, a third driving motor is arranged on the third support, a third supporting plate is symmetrically arranged on the corresponding side face of the box body, a third spring seat is arranged on the third supporting plate, a third vibration exciter for driving a third sieve plate to vibrate is fixedly arranged on the third spring seat, the third driving motor drives the third vibration exciter to operate through a third coupler, a fourth spring seat is arranged on one side of the third support, a fourth vibration exciter for driving a fourth sieve plate to vibrate is fixedly arranged on the fourth spring seat, a fourth driving motor is arranged on the side face of the box body, and the fourth driving motor drives the fourth vibration exciter to operate through the fourth coupler.

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