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CN-224221917-U - Vibrating screen for hydroxypropyl methyl cellulose production

CN224221917UCN 224221917 UCN224221917 UCN 224221917UCN-224221917-U

Abstract

The utility model discloses a vibrating screen for producing hydroxypropyl methyl cellulose, which comprises a vibrating screen box, wherein the upper end of the vibrating screen box is sequentially and fixedly connected with a collecting hopper and a dispersing drying box, one side of the upper end of the dispersing drying box is provided with a feeding hopper, the vibrating screen box also comprises a screen and a vibrating screening mechanism, the screen is fixed at the joint of the collecting hopper and the dispersing drying box, the dispersing drying box above the screen is internally provided with the dispersing drying mechanism, the vibrating screening mechanism is arranged in the vibrating screen box and below the screen, the dispersing drying mechanism comprises rotating shafts which are rotatably connected to the inner walls of the two sides of the dispersing drying box, the rotating shafts are hollow, the side walls of the rotating shafts are uniformly provided with aeration holes and dispersing stirring rods, and the dispersing stirring rods and the rotating shafts are vertically arranged. The utility model belongs to the technical field of hydroxypropyl methyl cellulose production, and particularly relates to a vibrating screen for hydroxypropyl methyl cellulose production.

Inventors

  • SU CHAOJIAN
  • Zhao Zhancun
  • YU YAJIE
  • WU XIDONG
  • GAO QINGHUI
  • LI MINGMING
  • ZHU LIXIN
  • Su Suoli
  • SU YANXIAO

Assignees

  • 沧州渤海新区安信化学有限公司

Dates

Publication Date
20260512
Application Date
20250425

Claims (7)

  1. 1. The utility model provides a vibrating screen is used in hydroxypropyl methylcellulose production, includes vibrating screen case (1), the upper end of vibrating screen case (1) fixedly connected with collecting hopper (2) and dispersion drying cabinet (3) in order, one side of dispersion drying cabinet (3) upper end is equipped with loading hopper (4), its characterized in that: The device further comprises a screen (5) and a vibration screening mechanism (6), wherein the screen (5) is fixed at the joint of the collecting hopper (2) and the dispersing and drying box (3), a dispersing and drying mechanism (7) is arranged in the dispersing and drying box (3) above the screen (5), and the vibration screening mechanism (6) is arranged in the vibration screening box (1) and below the screen (5); The dispersing and drying mechanism (7) comprises rotating shafts (8) which are connected to the inner walls of the two sides of the dispersing and drying box (3), the rotating shafts (8) are arranged in a hollow mode, aeration holes (9) and dispersing stirring rods (10) are uniformly distributed on the side walls of the rotating shafts (8), and the dispersing stirring rods (10) are perpendicular to the rotating shafts (8).
  2. 2. The vibrating screen for producing hydroxypropyl methylcellulose according to claim 1, wherein the vibrating screen mechanism (6) comprises a telescopic guide rod (11), a screen bucket (12) and piezoelectric ceramic plates (13), the telescopic guide rod (11) is fixed on the inner wall of the vibrating screen box (1) and is distributed along the horizontal direction, the screen bucket (12) is fixed on the telescopic guide rod (11) and is arranged between the two symmetrical telescopic guide rods (11), and the piezoelectric ceramic plates (13) are fixed at the lower end of a filter screen at the bottom of the screen bucket (12) and are uniformly distributed along the length direction.
  3. 3. The vibrating screen for producing hydroxypropyl methylcellulose according to claim 1, wherein a rotating joint (14) is rotatably connected to the side wall of the dispersing and drying box (3), one end of the rotating joint (14) penetrating through the side wall of the dispersing and drying box (3) is connected with a rotating shaft (8), steam exhaust plates (15) are symmetrically arranged on the side wall of the dispersing and drying box (3) on two sides of the rotating shaft (8), and a filter screen is arranged on one side, close to the inner wall of the dispersing and drying box (3), of the steam exhaust plates (15) and used for preventing powder from flying out.
  4. 4. A vibrating screen for producing hydroxypropyl methylcellulose according to claim 1 or 3 is characterized in that a reducing motor (16) is fixed on one side of the dispersing drying oven (3) symmetrical to the rotary joint (14), and an output shaft of the reducing motor (16) is connected with the rotary shaft (8).
  5. 5. The vibrating screen for producing hydroxypropyl methylcellulose according to claim 2, wherein a reset spring (17) is arranged between the screen bucket (12) and the inner wall of the vibrating screen box (1), the reset spring (17) is arranged around the telescopic guide rod (11), a protective cover (18) is fixed on the inner wall of the vibrating screen box (1), the upper end of the protective cover (18) is rotatably connected with a cam (19), an arc-shaped wear-resistant elastic sheet (20) is fixed in the middle of the side wall of the screen bucket (12), and the cam (19) is attached to the wear-resistant elastic sheet (20).
  6. 6. The vibrating screen for producing hydroxypropyl methylcellulose according to claim 5, wherein a driving motor (21) is fixed on the outer wall of the vibrating screen box (1), an output shaft of the driving motor (21) penetrates through one end of the vibrating screen box (1) and the bottom of the cam (19) and is provided with bevel gears (22), and the bevel gears (22) of the two groups are meshed with each other.
  7. 7. The vibrating screen for producing hydroxypropyl methylcellulose according to claim 1, wherein the two side walls of the collecting hopper (2) are provided with viewing mirrors (23), the feeding hopper (4) is internally provided with a feeding roller (24), the side walls of the feeding roller (24) are uniformly provided with a plurality of rectangular thin plates, and powder can be prevented from flying out of the feeding hopper (4) while feeding can be realized through the feeding roller (24).

Description

Vibrating screen for hydroxypropyl methyl cellulose production Technical Field The utility model belongs to the technical field of hydroxypropyl methyl cellulose production, and particularly relates to a vibrating screen for hydroxypropyl methyl cellulose production. Background Hydroxypropyl methylcellulose is a semisynthetic, inactive, viscoelastic polymer, and is widely used in multipurpose chemicals in the fields of construction, petroleum, food, medicine, cosmetics and the like, and is mainly prepared by alkalizing, etherifying, neutralizing, washing and the like cotton, and the finished product is white or white-like powder. In the hydroxypropyl methylcellulose production process, the hydroxypropyl methylcellulose is required to be screened and decontaminated by utilizing a vibrating screen, and an existing vibrating screen, such as a vibrating screen for producing hydroxypropyl methylcellulose disclosed in application number CN202221324945.5, is used for drying the hydroxypropyl methylcellulose through dry powder in an internal filtering and drying mechanism and classifying and screening the hydroxypropyl methylcellulose by utilizing a plurality of layers of screen plates. However, in practical use, the manner of drying the powder by using the dry powder not only needs frequent powder replacement, is complex in operation and wastes manpower, but also has poor drying effect, and in addition, because the hydroxypropyl methylcellulose is in powder form, powder particles are easy to adhere to each other and have certain viscosity, a single vibration is easy to cause blocking of filter holes, and particularly, in the production process, the hydroxypropyl methylcellulose powder is easy to wet and adhere to form blocks, so that the blocking risk is further increased. Disclosure of utility model Aiming at the situation, in order to overcome the defects of the prior art, the utility model provides the vibrating screen for producing the hydroxypropyl methylcellulose, which effectively solves the problems of poor drying effect and low efficiency of the conventional vibrating screen for producing the hydroxypropyl methylcellulose and solves the problem that a single vibration mode is easy to block a filter hole. The vibrating screen for producing the hydroxypropyl methylcellulose comprises a vibrating screen box, wherein the upper end of the vibrating screen box is fixedly connected with a collecting hopper and a dispersing drying box in sequence, one side of the upper end of the dispersing drying box is provided with a feeding hopper, the vibrating screen box further comprises a screen and a vibrating screening mechanism, the screen is fixed at the joint of the collecting hopper and the dispersing drying box, the dispersing drying mechanism is arranged in the dispersing drying box above the screen, the vibrating screening mechanism is arranged in the vibrating screen box and below the screen, the dispersing drying mechanism comprises rotating shafts which are rotatably connected to the inner walls of the two sides of the dispersing drying box, the rotating shafts are hollow, the side walls of the rotating shafts are uniformly provided with aeration holes and dispersing stirring rods, and the dispersing stirring rods are perpendicular to the rotating shafts. As this scheme improvement, vibration screening mechanism includes flexible guide arm, sieve fill and piezoceramics piece, flexible guide arm is fixed in on the inner wall of shale shaker case and along horizontal direction subsection, the sieve fill is fixed in on the flexible guide arm and locates between two flexible guide arms of symmetry, piezoceramics piece is fixed in the lower extreme of sieve fill bottom filter screen, and along length direction evenly distributed. As this scheme improvement, rotate on the lateral wall of dispersion drying cabinet and be connected with the rotation joint, and the one end that the rotation joint runs through dispersion drying cabinet lateral wall is connected with the pivot, the symmetry is equipped with the steam extraction board on the lateral wall of pivot both sides dispersion drying cabinet, steam extraction board is close to dispersion drying cabinet inner wall one side and is equipped with the filter screen for prevent powder departure. As an improvement of the scheme, a speed reducing motor is fixed on one side of the dispersing drying oven, which is symmetrical to the rotary joint, and an output shaft of the speed reducing motor is connected with a rotating shaft. As this scheme improvement, be equipped with reset spring between sieve fill and the shale shaker incasement wall, and reset spring encircles flexible guide arm setting, be fixed with the protection casing on the shale shaker incasement wall, the upper end rotation of protection casing is connected with the cam, the centre of sieve fill lateral wall is fixed with an curved wear-resisting shell fragment, and cam and wear-resisting shell fragment lami