CN-117259209-B - Screening device

Abstract

The application provides a screening device which is used for screening materials to be screened and comprises a base, a clamping part and a screening device, wherein the clamping part is rotatably arranged on the base and is provided with a preparation state and a screening state, the clamping part comprises a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are arranged along the transverse direction when the clamping part is in the preparation state, the first clamping plate and the second clamping plate are arranged at an angle with the transverse direction when the clamping part is in the screening state, the first clamping plate and the second clamping plate are used for clamping the materials to be screened, the first clamping plate and the second clamping plate are provided with clamping positions and release positions, and the first clamping plate and the second clamping plate are kept at the clamping positions when the first clamping plate and the second clamping plate are in the screening state, so that defective materials are separated from the clamping part due to self gravity. The technical scheme of the application can effectively solve the problem that defective potash fertilizer particles are difficult to screen out in the related technology.

Inventors

• Zhu Xiongnian
• XIE SHUNRONG
• ZHAO YAN
• FANG XIAOYONG
• WANG HAIFENG
• WANG DELONG
• SUN YING
• HUO FENG
• DENG WEN
• GENG YONGXIA

Assignees

• 青海盐湖工业股份有限公司

Dates

Publication Date

20260508

Application Date

20230920

Claims (9)

1. 1. A screening apparatus for screening a material to be screened, wherein the material to be screened comprises a complete material and a defective material, the screening apparatus comprising: a base (10); A clamping part (20) rotatably arranged on the base (10) and having a preparation state and a screening state, the clamping part (20) comprising a first clamping plate (21) and a second clamping plate (22) arranged opposite to each other, the first clamping plate (21) and the second clamping plate (22) being arranged in a lateral direction when the clamping part (20) is in the preparation state, the first clamping plate (21) and the second clamping plate (22) being arranged at an angle to the lateral direction when the clamping part (20) is in the screening state, The first clamping plate (21) and the second clamping plate (22) are used for clamping the materials to be screened, the first clamping plate (21) and the second clamping plate (22) are provided with clamping positions close to each other and release positions far away from each other, and when the first clamping plate (21) and the second clamping plate (22) are in the screening state, the first clamping plate (21) and the second clamping plate (22) are kept in the clamping positions, so that the defective materials are separated from the clamping part (20) due to self gravity; The clamping part (20) further comprises a rotary driving piece (23) arranged on the base (10) and a connecting frame (24) in driving connection with the rotary driving piece (23), the connecting frame (24) comprises a first connecting rod (241) and a second connecting rod (242), the first clamping plate (21) is connected to the first connecting rod (241), and the second clamping plate (22) is connected to the second connecting rod (242).
2. 2. The screening device of claim 1, wherein the screening device comprises a plurality of screens, The clamping part (20) further comprises a first clamping drive (25) arranged between the first connecting rod (241) and the first clamping plate (21), and/or, The clamping portion (20) further comprises a second clamping drive (26) arranged between the second connecting rod (242) and the second clamping plate (22).
3. 3. The screening device according to claim 1, wherein the connecting frame (24) further comprises a main body rod (243), the first end of the first connecting rod (241) and the first end of the second connecting rod (242) are connected to two ends of the main body rod (243), the first connecting rod (241) and the second connecting rod (242) are arranged in parallel, and the rotation driving member (23) is connected to the middle part of the main body rod (243).
4. 4. A screening apparatus according to claim 2, wherein, The surface of the first clamping plate (21) facing the second clamping plate (22) is provided with a plurality of first convex teeth (211), and/or, A plurality of second convex teeth (221) are arranged on the surface of the second clamping plate (22) facing the first clamping plate (21).
5. 5. A screening arrangement according to any one of claims 1-4, further comprising a dust removal structure (30) arranged on the base (10), the dust removal structure (30) having an air outlet directed towards the clamping space between the first clamping plate (21) and the second clamping plate (22) for venting the clamping space.
6. 6. The screening device according to claim 5, wherein the first clamping plate (21) is provided with a hollow cavity, a plurality of air outlet holes communicated with the hollow cavity are formed in the surface of the first clamping plate (21) facing the second clamping plate (22), the air outlet holes form the air outlet, the dust removing structure (30) comprises a first air pump (31) and a ventilation pipeline (32), and the ventilation pipeline (32) is communicated with the air outlet of the first air pump (31) and the hollow cavity.
7. 7. The screening device according to claim 6, characterized in that the venting line (32) comprises a venting nipple (321) connected to the surface of the first clamping plate (21) remote from the second clamping plate (22) and a flexible tube (322) communicating the venting nipple (321) with the air outlet of the first air pump (31), the venting nipple (321) being arranged in the middle of the first clamping plate (21) and communicating with the hollow cavity.
8. 8. The sifting device according to any one of claims 1 to 4, further comprising a second air pump (41) and a collecting bag (42) provided on the base (10), the second air pump (41) having an air suction port and an air outlet port, the air suction port of the second air pump (41) being provided adjacent to the first clamping plate (21) and the second clamping plate (22) when the clamping portion (20) is in the ready state, the air outlet port of the second air pump (41) being connected to the collecting bag (42).
9. 9. The screening device according to any one of claims 1 to 4, further comprising a holding portion (50), the holding portion (50) being arranged below the clamping portion (20), the holding portion (50) comprising a defective material holding area (51) and a complete material holding area (52), the complete material holding area (52) being located downstream of the defective material holding area (51) in the rotational direction (a) of the clamping portion (20).

Description

Screening device Technical Field The invention relates to the technical field of fertilizer manufacturing, in particular to a screening device. Background Potash fertilizer refers to a generic term for various mined and manufactured salts containing water-soluble potassium. In the related art, potash fertilizers are generally spherical structures produced by a granulating apparatus. In the production process of the potash fertilizer, the produced potash fertilizer is a mixture comprising powder, dust, defective potash fertilizer particles and complete potash fertilizer particles due to the influence of the processing technology, the impurity content of raw materials and other factors, wherein the defective potash fertilizer particles are partially defective potash fertilizer particles which are not round. Uneven potash fertilizer particles can directly affect the use by the user. Generally, staff usually adopts the screening machine to screen potash fertilizer, and current common screening machine is vibratory screening machine, and this kind of vibratory screening machine can screen out powder, the dust in the potash fertilizer, but can't screen out defective potash fertilizer granule in the potash fertilizer, still can influence user's follow-up use. Thus, there is a problem in the art in that it is difficult to screen out defective potash fertilizer particles. Disclosure of Invention The invention mainly aims to provide a screening device which is used for solving the problem that defective potash fertilizer particles are difficult to screen out in the related art. In order to achieve the above object, the invention provides a screening device for screening a material to be screened, wherein the material to be screened comprises a complete material and a defective material, the screening device comprises a base, a clamping part rotatably arranged on the base and provided with a preparation state and a screening state, the clamping part comprises a first clamping plate and a second clamping plate which are oppositely arranged, when the clamping part is in the preparation state, the first clamping plate and the second clamping plate are arranged along the transverse direction, when the clamping part is in the screening state, the first clamping plate and the second clamping plate are arranged at an angle with the transverse direction, wherein the first clamping plate and the second clamping plate are used for clamping the material to be screened, the first clamping plate and the second clamping plate are provided with clamping positions close to each other and release positions far away from each other, and when the first clamping plate and the second clamping plate are in the screening state, the first clamping plate and the second clamping plate are kept at the clamping positions so that the defective material is separated from the clamping part due to self gravity. Further, the clamping part further comprises a rotary driving piece arranged on the base and a connecting frame in driving connection with the rotary driving piece, the connecting frame comprises a first connecting rod and a second connecting rod, the first clamping plate is connected to the first connecting rod, and the second clamping plate is connected to the second connecting rod. Further, the clamping part further comprises a first clamping driving piece arranged between the first connecting rod and the first clamping plate, and/or the clamping part further comprises a second clamping driving piece arranged between the second connecting rod and the second clamping plate. Further, the link still includes the main part pole, and the first end of head rod and the first end of second connecting rod are connected at the both ends of main part pole, head rod and second connecting rod parallel arrangement, and rotary driving spare is connected at the middle part of main part pole. Further, a plurality of first convex teeth are arranged on the surface of the first clamping plate facing the second clamping plate, and/or a plurality of second convex teeth are arranged on the surface of the second clamping plate facing the first clamping plate. Further, the screening device further comprises a dust removing structure arranged on the base, and the dust removing structure is provided with an air outlet facing the clamping space between the first clamping plate and the second clamping plate so as to ventilate the clamping space. Further, the first clamping plate is provided with a hollow cavity, a plurality of air outlet holes communicated with the hollow cavity are formed in the surface, facing the second clamping plate, of the first clamping plate, the plurality of air outlet holes form an air outlet, the dust removing structure comprises a first air pump and a ventilation pipeline, and the ventilation pipeline is communicated with the air outlet of the first air pump and the hollow cavity. Further, the ventilation pipeline comprises a ventilation j