CN219519557U

CN219519557U - Multistage vibrating screen structure

Info

Publication number: CN219519557U
Application number: CN202320004524.2U
Authority: CN
Inventors: 彭海平; 戴伟斌; 熊毅
Original assignee: Changsha Baoyang Environmental Protection Technology Co ltd
Current assignee: Changsha Baoyang Environmental Protection Technology Co ltd
Priority date: 2023-01-03
Filing date: 2023-01-03
Publication date: 2023-08-15
Anticipated expiration: 2033-01-03

Abstract

The utility model discloses a multistage vibrating screen structure which comprises a screen frame, wherein the screen frame is an inclined screen frame and is in power connection with a vibrating motor; the screen frame is a frame support, and a first screen body, a second screen body, a third screen body and a fourth screen body are sequentially arranged on the frame support from top to bottom; the first screen body and the fourth screen body are rigid screen plates, and the second screen body and the third screen body are flexible screen plates in a tensioning state; the screen frame is provided with a plurality of first type damping units on the outline of the outer frame body, and a plurality of second type damping units on the inner side of the outline of the outer frame body; the first damping unit is only connected with the first screen body and the fourth screen body; the second damping unit sequentially penetrates through the first screen body, the second screen body, the third screen body and the fourth screen body. The vibrating screen has the advantages of stable structure, high screening precision, long service life and convenient maintenance, and can be widely applied to screening operation of solid materials.

Description

Multistage vibrating screen structure

Technical Field

The utility model relates to the technical field of screening devices, in particular to a multistage vibrating screen structure.

Background

In the fields of chemical industry, mining and metallurgy, building materials, foods, medicines, plastic processing and the like in the prior art, a screen structure is often required to be used for screening and separating operation, and in order to improve screening efficiency, the screen is usually fixed on a screen frame, and a vibrating motor is utilized to drive the screen frame to vibrate so as to form a vibrating screen structure, so that separation is accelerated under the influence of vibration.

Prior art shakers typically include one or more screens having a plurality of fine apertures in the front face thereof, whereas commercially available screens typically employ wire to weave a metal mesh which itself has plasticity and in use, material depression will deform the screen, thereby affecting both the screening efficiency and quality, being non-durable, having a short life and affecting the life of the screen. In addition, in order to enable the materials to be screened more fully and effectively in the use process of the vibrating screen, the screen is required to have higher vibration frequency, and the materials can aggravate abrasion to screen holes under the high-frequency vibration condition, so that the mesh number of the screen is inaccurate, and the mesh number of the produced products is disordered; based on the above-mentioned circumstances, there is also the multistage shale shaker that adopts to solve above-mentioned problem, but traditional multistage shale shaker structural design is too simple generally, and its screen cloth structure is the same, and the buffer structure on the screen frame between screen cloth and the screen cloth is single and unreasonable, can make a large amount of noise because of the vibration during operation, and fatigue damage can appear in the hookup location of screen frame under the long-time continuous operation's condition.

Disclosure of Invention

The technical problem solved by the utility model is to provide a multistage vibrating screen structure so as to solve the defects of large noise and short service life of the traditional multistage vibrating screen, and the multistage vibrating screen structure has the advantage of simple overhaul and maintenance and can be used for solving the defects in the technical background.

The technical problems solved by the utility model are realized by adopting the following technical scheme:

the multistage vibrating screen structure comprises a screen frame, wherein the screen frame is an inclined screen frame, is in power connection with a vibrating motor and realizes vibration screening through driving of the vibrating motor;

the screen frame is a frame support, and a first screen body, a second screen body, a third screen body and a fourth screen body are sequentially arranged on the frame support from top to bottom; the mesh aperture of the first screen body is larger than or equal to the mesh aperture of the second screen body, the mesh aperture of the third screen body is larger than or equal to the mesh aperture of the fourth screen body; the first screen body and the fourth screen body are rigid screen plates, and the second screen body and the third screen body are flexible screen plates in a tensioning state; the first screen body, the second screen body, the third screen body and the fourth screen body are parallel to the setting plane of the screen frame, and the interval between the adjacent screen bodies is not less than 10mm;

the screen frame is provided with a plurality of first type damping units on the outline of the outer frame body, and a plurality of second type damping units on the inner side of the outline of the outer frame body; the first damping unit is only connected with the first screen body and the fourth screen body, and a first damping pad is arranged between the first screen body and the fourth screen body; the second type damping units sequentially penetrate through the first screen body, the second screen body, the third screen body and the fourth screen body, and second damping pads are lined between the adjacent screen bodies.

As a further limitation, the included angle between the inclined plane of the screen frame and the horizontal plane is adjustable, and the adjustment range of the included angle is 10-30 degrees.

As a further limitation, the first screen body is a ceramic screen plate or a stainless steel screen plate punched and formed by austenitic stainless steel plates.

As a further definition, the second screen and the third screen are metal screens.

As a further limitation, the fourth screen body is a stainless steel screen plate formed by punching austenitic stainless steel plates.

As a further limitation, the first screen, the second screen, the third screen, and the fourth screen are independently detachable assembled structures within the frame of the screen frame.

By way of further limitation, the first shock pad is preferably a rubber shock pad, the second shock pad is preferably a spring shock pad, and the modulus of elasticity of the first shock pad is greater than the modulus of elasticity of the second shock pad.

By way of further limitation, the first type of damper unit is maintained perpendicular to the horizontal plane when assembled and the second type of damper unit is maintained perpendicular to the incline of the frame when assembled.

As a further definition, the screen frame is a rectangular screen frame; the four first damping units are respectively arranged at four corner positions of the outline of the outer frame of the screen frame.

Due to the adoption of the structure, the utility model has the following beneficial effects:

the multistage vibrating screen structure has the advantages of both the screen plate and the screen mesh, the number of vibrating motors can be reduced in the screening process, a single vibrating motor can drive the multistage vibrating screen to perform screening operation, the screening area is more meticulous through superposition of a plurality of screen bodies, and the screening precision is improved;

the first contact surface of the material is a screen plate, so that the overall wear resistance of the screen body structure can be greatly increased, the design of the overlapped structure of the screen surfaces enables the flexible screen surface to have smaller wear speed of the material on the screen after tensioning, the corresponding screen can be directly replaced after wear, and the condition that the products are disordered due to different sizes of the worn screen holes is avoided, so that the product quality is influenced;

the combination of the damping units in different positions and types ensures that the damping effect is more ideal, the service life of the equipment is prolonged, and the noise is smaller during operation.

Compact structure, wholeness are good, conveniently carry out the bulk movement.

Drawings

FIG. 1 is a schematic diagram of a preferred embodiment of the present utility model.

Wherein: 1. a screen frame; 2. a first type of shock absorbing unit; 3. a first shock pad; 4. a first screen; 5. a second screen; 6. a third screen; 7. a second shock pad; 8. a fourth screen; 9. a second type of shock absorbing unit; 10. a screen fixing frame; 11. a vibration motor; 12. a frame.

Detailed Description

The utility model is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the utility model easy to understand.

Referring to a preferred embodiment of a multi-stage vibrating screen structure of fig. 1, in this embodiment, the multi-stage vibrating screen structure is provided on a frame 12 for screening and classifying sand and stone in a building material, and includes the frame 12 as a supporting structure, the frame 12 is assembled with vibrating motors 11 at upper portions of both sides through motor supports, and the vibrating motors 11 at upper portions of both sides are assembled and connected with a screen frame 1, and can drive the screen frame 1 to perform a vibrating screening operation of a screening device on the screen frame 1.

The screen frame 1 is a frame support, and is obliquely arranged and kept fixed through the frame 12 according to the pattern shown in fig. 1, in this embodiment, an included angle between an inclined plane corresponding to the screen frame 1 and a horizontal plane is 17 degrees, so that materials can be screened along the inclined planes of different screen frames on the screen frame 1 in the vibration process.

The screen frame 1 is provided with the assembly position of first screen frame 4 and fourth screen frame 8 on the frame body, the both sides of first screen frame 4 and fourth screen frame 8 are provided with horizontal side ear to wear to adorn fixedly at four angular positions of screen frame 1 frame body through first type damping unit 2 to first screen frame 4 and fourth screen frame 8 in the side ear position, first type damping unit 2 is including wearing the dress body of rod, wears to adorn the body of rod and is fixed after passing first screen frame 4 and fourth screen frame 8 in proper order, and wear the intermediate position of dress body of rod at first type damping unit 2 and be provided with first shock pad 3 and support and lean on in order to realize the vibration buffering between first screen frame 4 and the fourth screen frame 8 between first screen frame 4 and fourth screen frame 8, first shock pad 3 is the rubber shock pad.

And upper and lower screen holders 10 are formed on the inner side of the outer frame of the screen frame 1, the screen holders 10 are used for fixing the positions of the second screen body 5 and the third screen body 6, and the second screen body 5, the third screen body 6, the first screen body 4 and the fourth screen body 8 are kept parallel and keep an included angle of 17 degrees with a horizontal plane, and the spacing between two adjacent screen bodies in the four screen bodies arranged in parallel is 12mm.

In the embodiment of the utility model, the first screen body 4 is a ceramic screen plate, the second screen body 5 and the third screen body 6 are metal screen meshes, the fourth screen body 8 is a stainless steel screen plate formed by punching austenitic stainless steel plates, the mesh aperture of the first screen body 4 is larger than that of the second screen body 5, the mesh aperture of the second screen body 5 is larger than that of the third screen body 6, and the mesh aperture of the third screen body 6 is larger than that of the fourth screen body 8. The first screen body 4 and the fourth screen body 8 are kept in relative fixation by the first type damping unit 2, the second screen body 5 and the third screen body 6 are tensioned by the screen fixing frame 10 at the outer edge, the second type damping unit 9 is penetrated in the middle of the second screen body 5 and the third screen body 6, the second type damping unit 9 also comprises a retention rod body, and two ends of the retention rod body are respectively fixed with the first screen body 4 and the fourth screen body 8 by countersunk bolts during assembly and are kept vertical to the inclined plane of the screen frame.

And still the cover is equipped with three second shock pad 7 on every retention body of rod, and this second shock pad 7 is the spring shock pad, including the spring body, its spring body both ends set up the packing ring, and the elastic modulus of second shock pad 7 is less than the elastic modulus of first shock pad 3. Two ends of the second shock pad 7 are propped against the surfaces of the first screen body 4 and the second screen body 5 or the surfaces of the second screen body 5 and the third screen body 6 or the surfaces of the third screen body 6 and the fourth screen body 8 through gaskets; the second screen 5 and the third screen 6 can maintain a stable tensioning and screening state through the arrangement of the second type damping units 9, and the plate structure of the first screen 4 can reduce the impact of materials on the second screen 5 and the third screen 6.

In this embodiment, in order to improve usability of the vibrating screen, the first screen body 4, the second screen body 5, the third screen body 6, and the fourth screen body 8 are independently detachable assembled in the frame body of the screen frame 1.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be appreciated by those skilled in the art that these examples are for illustrative purposes only and are not intended to limit the scope of the present utility model. Furthermore, it is to be understood that various changes, modifications and/or variations may be made by those skilled in the art after reading the technical content of the present utility model, and that all such equivalents are intended to fall within the scope of the present utility model as defined in the appended claims.

Claims

1. The multistage vibrating screen structure is characterized by comprising a screen frame, wherein the screen frame is an inclined screen frame, is in power connection with a vibrating motor and realizes vibrating screening through driving of the vibrating motor;

2. The multi-stage vibrating screen structure according to claim 1, wherein an included angle between the inclined surface of the screen frame and the horizontal plane is adjustable, and the adjustment range of the included angle is 10-30 °.

3. The multi-stage vibrating screen structure of claim 1, wherein the first screen body is a ceramic screen plate or a stainless steel screen plate punched and formed of austenitic stainless steel plates.

4. The multi-stage vibrating screen structure of claim 1, wherein the second screen body and the third screen body are metal screens.

5. The multi-stage vibrating screen structure of claim 1, wherein the fourth screen body is a stainless steel screen plate punched and formed of austenitic stainless steel plates.

6. The multi-stage vibrating screen structure of claim 1, wherein the first screen, the second screen, the third screen, and the fourth screen are independently detachable assembled within the frame of the screen frame.

7. The multi-stage vibrating screen structure of claim 1, wherein the first shock pad is a rubber shock pad, the second shock pad is a spring shock pad, and the modulus of elasticity of the first shock pad is greater than the modulus of elasticity of the second shock pad.

8. The multi-stage vibrating screen structure of claim 1, wherein the first type of damper units are maintained perpendicular to a horizontal plane when assembled and the second type of damper units are maintained perpendicular to a sloped surface of the screen frame when assembled.

9. The multi-stage vibrating screen structure of claim 1, wherein the screen frame is a rectangular screen frame; the four first damping units are respectively arranged at four corner positions of the outline of the outer frame of the screen frame.