Linear sieve combined sieve plate for screening coke particles and coke foam

Abstract

The utility model belongs to the technical field of linear screen equipment, and relates to a linear screen combined screen plate for screening coke particles and coke foam, which comprises a vibrating screen and is characterized in that the vibrating screen is provided with four rows of screen plates, namely a first row of screen plates, a second row of screen plates, a third row of screen plates and a fourth row of screen plates, the second row of sieve plates, the third row of sieve plates and the fourth row of sieve plates are all full sieve plates, the first row of sieve holes, the second row of sieve holes, the third row of sieve holes and the fourth row of sieve holes are formed in the first row of sieve plates, the second row of sieve plates, the third row of sieve holes and the fourth row of sieve plates respectively, and the first row of sieve holes, the second row of sieve holes, the third row of sieve holes and the fourth row of sieve holes are all square holes. The coke particle and coke foam screening device is efficient, flexible, reasonable in structure, suitable for screening requirements of coke particles and coke foam under various working conditions, capable of treating coke particles and coke foam of various forms and particle sizes by adopting the combination of the screening plates of various specifications, capable of prolonging the service life and capable of improving the screening effect.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the linear screen equipment technical field, concretely relates to a linear screen combined sieve plate for screening coke granule and coke scum. BACKGROUND

[0002] In the process of coke screening, coke needs to be classified according to particle size to obtain metallurgical coke and coke scum, and screening equipment is used for screening coke, and in the existing screening equipment, commonly used sieve plate types include round hole sieve plate, square hole sieve plate, bar sieve, horse's hoof type sieve plate and water drop type sieve plate.

[0003] Generally, linear screens are used to screen coke less than 25mm into coke scum less than 10mm and coke granule of 10-25mm, and square holes are generally used for sieve plate, but when selecting hole diameter, coke scum in 11*11mm coke granule exceeds the standard, still exceeds the standard in 12*12mm, and coke scum in 12*14mm coke granule also exceeds the standard; and the first sieve plate is easily broken by material impact at the discharging position.

[0004] Therefore, a linear screen combined sieve plate for screening coke granule and coke scum is provided. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a linear screen combined sieve plate for screening coke granule and coke scum, which has the screening function of coke granule and coke scum, and solves the problems of breakage of the sieve plate at the discharging position and screening exceeding the standard in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme that the utility model provides a linear screen combined sieve plate for screening coke granule and coke scum, which comprises a vibrating screen, characterized in that the vibrating screen is arranged as four rows of sieve plates, namely a first row of sieve plates, a second row of sieve plates, a third row of sieve plates and a fourth row of sieve plates, the first row of sieve plates is a half sieve plate, the second row of sieve plates, the third row of sieve plates and the fourth row of sieve plates are all full sieve plates, the first row of sieve plates, the second row of sieve plates, the third row of sieve plates and the fourth row of sieve plates are respectively provided with a first row of sieve holes, a second row of sieve holes, a third row of sieve holes and a fourth row of sieve holes, and the first row of sieve holes, the second row of sieve holes, the third row of sieve holes and the fourth row of sieve holes are all square holes.

[0007] Preferably, the vibrating screen is placed at an inclination angle of 4°, and the amplitude of the vibrating screen is 9mm.

[0008] Preferably, the first row of sieve plates is a half sieve plate with a front half blind plate and a rear half sieve plate.

[0009] Preferably, the first row of sieve holes and the third row of sieve holes are 12*14mm in size, and the second row of sieve holes and the fourth row of sieve holes are 11*11mm in size.

[0010] Preferably, the first row of sieve plates, the second row of sieve plates, the third row of sieve plates and the fourth row of sieve plates have a length of 1570mm and a width of 1270mm.

[0011] Compared with the prior art, the utility model has the advantages and positive effects that,

[0012] 1、The utility model discloses efficient, flexible and reasonable in structure is suitable for the coke particle coke scum screening demand under various working conditions, adopts the sieve plate combination of multiple specifications, can handle the coke particle coke scum of multiple forms and particle size, prolongs the service life and improves the screening effect.

[0013] 2、The utility model discloses the screening function of coke particle coke scum, solved the sieve plate unloading place of prior art and be easy to be impacted fracture and the problem of screening overproof of material. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be to the embodiment description needed to use the drawing a simple introduction, obviously, the following description in the drawing is some embodiments of the utility model, for the ordinary skilled person in the art comes, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0015] Figure 1 It is a kind of structure diagram of linear sieve combination sieve plate for screening coke particle coke scum;

[0016] In the above figure, 1, first row of sieve plates, 2, first row of sieve holes, 3, second row of sieve plates, 4, second row of sieve holes, 5, third row of sieve plates, 6, third row of sieve holes, 7, fourth row of sieve plates, 8, fourth row of sieve holes. DETAILED DESCRIPTION

[0017] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be to the embodiment description needed to use the drawing a simple introduction, obviously, the following description in the drawing is some embodiments of the utility model, for the ordinary skilled person in the art comes, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0018] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other ways different from the description herein, therefore, the present application is not limited to the specific embodiments disclosed in the following description.

[0019] Example 1, as Figure 1As shown, a linear screen combination screen plate for screening coke granules and coke fines, comprising a vibrating screen, characterized in that the vibrating screen is arranged as 4 rows of screen plates, respectively first row screen plate 1, second row screen plate 3, third row screen plate 5 and fourth row screen plate 7, the first row screen plate 1 is a half screen plate, the second row screen plate 3, the third row screen plate 5 and the fourth row screen plate 7 are all full screen plates, the first row screen plate 1, the second row screen plate 3, the third row screen plate 5 and the fourth row screen plate 7 are respectively provided with first row screen hole 2, second row screen hole 4, third row screen hole 6 and fourth row screen hole 8, the first row screen hole 2, the second row screen hole 4, the third row screen hole 6 and the fourth row screen hole 8 are all square holes.

[0020] The first row screen plate 1 is a half screen plate, which prevents the material from directly impacting the bottom of the screen plate during the discharging process, thereby reducing the risk of screen plate breakage and increasing durability. The second row screen plate 3 is a full screen plate, which is used to carry the material and continue to pass the un-screened coke granules to the subsequent screening area. The third row screen plate 5 is also used to carry the material and guide the un-screened material to move forward. The fourth row screen plate 7 is the lowest row of screen plates, responsible for screening the remaining material into coke fines and coke granules, and guiding the qualified coke fines out.

[0021] Now let's talk about the specific design of the above key components:

[0022] The vibrating screen is placed at an angle of 4°. A proper inclination angle ensures the rapid flow of material on the screen plate, preventing excessive residence or stagnation of material on the screen plate, thereby improving screening efficiency. It can ensure that all particle sizes of material have enough movement distance and residence time while exciting vibration, promote the smooth passage of material through the screen hole, and reduce the residue of coke voids and coke fines. The amplitude of the vibrating screen is 9mm. The size of the amplitude determines the vibration amplitude and movement intensity of the material. Too large may cause the material to be lifted and not easy to screen, and too small may not be enough to drive the material to move. Therefore, the amplitude of 9mm ensures sufficient impact force during the screening process without causing excessive material bounce. Proper amplitude can efficiently loosen the material, increase the contact area between the material and the screen hole, and thus improve the effective screening rate.

[0023] The first row screen plate 1 is a half screen plate with a front half blind plate and a rear half screen plate. The front half is set as a blind plate to prevent large materials from directly impacting the lower part and reduce damage, while the rear half is provided with screen holes to push the material to screen by gravity and vibration, reducing the risk of breakage caused by direct impact of the material, and effectively guiding the flow of material to optimize the screening process.

[0024] The first row of screen holes 2 and the third row of screen holes 6 are 12*14mm specifications, and the second row of screen holes 4 and the fourth row of screen holes 8 are 11*11mm specifications. The first row of screen plates 1 has a large material passing amount and a fast material speed, and therefore a screen hole with a good screening effect is required. The first row of screen holes 2 is larger, i.e., 12*14mm. Through continuous testing, if all the other screen plates are 11*11mm screen plates, the coke fines content in coke particles is prone to exceed the standard (the coke fines content is 4-5%). Therefore, the third row of screen holes 6 is adjusted to be larger, i.e., 12*14mm.

[0025] The first row of screen plates 1, the second row of screen plates 3, the third row of screen plates 5 and the fourth row of screen plates 7 have a length of 1570mm and a width of 1270mm, so as to provide a large screening area, so that the material has sufficient contact area for screening, and the stability and durability of the structure are ensured.

[0026] Through long-term practical application, after the utility model is used, the coke fines (0-10mm) content in the screened coke particles (10-25mm) is 2.4% on average per year, and the coke particle content in the coke fines is 1.69% on average per year.

[0027] The standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be ordered according to the description and the drawings. The specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art. The mechanical parts and equipment adopt conventional types in the prior art. The circuit connection adopts the conventional connection mode in the prior art. The contents not described in detail in the description belong to the prior art known by the person skilled in the art.

[0028] The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model in other forms. Any person skilled in the art can modify or retrofit the above disclosed technical content to equivalent embodiments applied to other fields. However, any simple modification, equivalent change and retrofit of the above embodiments according to the technical essence of the utility model still belong to the protection scope of the technical scheme of the utility model.

Claims

1. A linear screen combination screen deck for screening coke breeze, comprising a vibrating screen, characterized in that, The vibrating screen is provided with four rows of screen plates, namely, a first row of screen plates, a second row of screen plates, a third row of screen plates and a fourth row of screen plates, the first row of screen plates is a half screen plate, the second, third and fourth rows of screen plates are full screen plates, the first, second, third and fourth rows of screen plates are respectively provided with a first row of screen holes, a second row of screen holes, a third row of screen holes and a fourth row of screen holes, and the first, second, third and fourth rows of screen holes are all square holes.

2. A linear screen assembly screen deck for screening coke breeze as claimed in claim 1 wherein, The vibrating screen has a placement inclination angle of 4° and a vibrating amplitude of 9 mm.

3. A linear screen assembly screen deck for screening coke breeze as claimed in claim 1 wherein, The first row of screen plates is a half screen plate with a front half blind plate and a rear half screen plate.

4. A linear screen assembly screen deck for screening coke breeze as claimed in claim 1 wherein, The first and third rows of screen holes are of a 12*14 mm specification, and the second and fourth rows of screen holes are of an 11*11 mm specification.

5. A linear screen assembly screen deck for screening coke breeze as claimed in claim 1 wherein, The first, second, third and fourth rows of screen plates have a length of 1570 mm and a width of 1270 mm.

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