A screening device for gypsum board recycling

Abstract

The utility model discloses a kind of screening devices for gypsum board recycling, including rack, shell fixedly connected to rack, setting in shell one end's feed hopper, rotary installation in shell's sieve barrel, setting in shell lower part's collection hopper, setting in shell lower part, for the slagging-off hopper of paper scrap export, and the reduction motor of driving sieve barrel rotation;Spiral guide vane is provided in the inner wall of sieve barrel, drum brush is provided between shell and sieve barrel, drum brush is rotatably connected with shell, and contact with the outside of sieve barrel;Drum brush is located in the middle upper portion of shell.The utility model has the advantages that not only can maintain the high efficiency of screening process, but also prevent the problem of screening efficiency decline due to screen clogging, so as to comprehensively guarantee the quality and efficiency of entire screening work.

Description

Technical Field

[0001] This utility model relates to the technical field of gypsum board processing equipment, and in particular to a screening device for recycling gypsum board. Background Technology

[0002] Gypsum board is a commonly used material in interior decoration, mainly used for interior partition walls and ceilings. It has a gypsum core covered by a thick paper outer layer. This material is not only lightweight and strong, but also offers excellent sound and heat insulation, and is highly fire-resistant. A major advantage of gypsum board is its ease of cutting and installation, making it particularly popular in home decoration.

[0003] During the production of gypsum board, some defective gypsum board is produced. These substandard boards usually need to be crushed, screened, and recycled. Chinese utility model patent application CN 217165751 U discloses a waste gypsum board recycling system, which includes a screening mechanism. However, the screen of this mechanism is fixed to a stator, and during screening, the screen is prone to clogging, leading to reduced screening efficiency. Therefore, improvement is necessary. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a screening device for recycling gypsum board.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] A screening device for recycling gypsum board includes a frame, a housing fixed to the frame, a feed hopper at one end of the housing, a screen barrel rotatably installed inside the housing, a collection hopper at the lower part of the housing, a slag discharge hopper at the lower part of the housing for discharging paper scraps, and a geared motor for driving the screen barrel to rotate; the inner wall of the screen barrel is provided with spiral guide vanes, a roller brush is provided between the housing and the screen barrel, the roller brush is rotatably connected to the housing and contacts the outside of the screen barrel; the roller brush is located in the upper middle part of the housing.

[0007] Preferably, a screw conveyor is provided at the outlet of the hopper, a rotary feed valve is connected to the outlet of the screw conveyor, a pneumatic conveying pipe is connected to the outlet of the rotary feed valve, and a Roots blower is connected to one end of the pneumatic conveying pipe.

[0008] Preferably, a baffle ring is provided on the screen barrel at one end of the feed hopper.

[0009] Preferably, the screen barrel includes a rotating shaft rotatably connected to the housing, a cylindrical screen fitted onto the rotating shaft, and a bracket for fixing the rotating shaft and the cylindrical screen.

[0010] Preferably, the spiral guide vane is made of wear-resistant polytetrafluoroethylene sheet and is connected to the screen barrel by bolts.

[0011] The above technical solution has the following advantages:

[0012] This invention achieves a highly efficient screening process by employing a rotating screen drum and internally configured spiral blades. During screening, materials such as paper scraps inside the screen drum are moved towards the discharge hopper in a predetermined direction by the spiral blades. This design greatly ensures the smoothness and continuity of the material output process, effectively avoiding equipment malfunctions caused by material accumulation. In addition, this invention includes a cleaning roller brush device. This cleaning roller brush is primarily used to clean the cylindrical screen on the screen drum in real time, ensuring that the surface of the cylindrical screen remains clean and unclogging. This not only maintains the high efficiency of the screening process but also prevents a decrease in screening efficiency due to screen clogging, thus comprehensively guaranteeing the quality and efficiency of the entire screening operation. Attached Figure Description

[0013] Figure 1 This is a structural diagram of one embodiment of the present utility model;

[0014] Figure 2 for Figure 1 The left view;

[0015] Figure 3 for Figure 1 Top view;

[0016] Figure 4 for Figure 1 A three-dimensional image;

[0017] Figure 5 for Figure 3 Sectional view of AA;

[0018] Figure 6 for Figure 5 Enlarged view of section B;

[0019] In the picture:

[0020] 1-Frame, 2-Shell, 3-Feed hopper, 4-Screw barrel, 5-Collection hopper, 6-Slag discharge hopper, 7-Gear motor, 8-Spiral guide vane, 9-Roller brush, 10-Screw conveyor, 11-Rotary feed valve, 12-Pneumatic conveying pipe, 13-Roots blower, 14-Baffle ring, 41-Rotating shaft, 42-Cylindrical screen, 43-Support. Detailed Implementation

[0021] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] As shown in the attached figure, a screening device for recycling gypsum board includes a frame 1, a housing 2 fixed to the frame 1, a feed hopper 3 disposed at one end of the housing 2, a screen barrel 4 rotatably installed inside the housing 2, a collection hopper 5 disposed at the lower part of the housing 2, a slag discharge hopper 6 disposed at the lower part of the housing 2 for discharging paper scraps, and a reduction motor 7 for driving the screen barrel 4 to rotate; the inner wall of the screen barrel 4 is provided with spiral guide vanes 8, and a roller brush 9 is disposed between the housing 2 and the screen barrel 4, the roller brush 9 is rotatably connected to the housing 2 and contacts the outside of the screen barrel 4; the roller brush 9 is located in the upper middle part of the housing 2.

[0023] As a preferred technical solution in this embodiment, to facilitate the rapid recovery of materials to the raw material workshop, a screw conveyor 10 is installed at the outlet of the collecting hopper 5. A rotary feed valve 11 is connected to the outlet of the screw conveyor 10, and a pneumatic conveying pipe 12 is connected to the outlet of the rotary feed valve 11. One end of the pneumatic conveying pipe 12 is connected to a Roots blower 13. The recovered gypsum powder is transported to the raw material workshop via the pneumatic conveying pipe 12. The raw material workshop has a cyclone separator to collect the transported gypsum powder, thereby achieving the recycling and reuse of the gypsum powder.

[0024] As a preferred technical solution in this embodiment, a baffle ring 14 is provided on the screen barrel 4 at one end of the feed hopper 3. The baffle ring 14 can prevent material from leaking from this end of the screen barrel 4 and ensure that the paper scraps are completely separated.

[0025] As a preferred embodiment, the sieve barrel 4 includes a rotating shaft 41 rotatably connected to the housing 2, a cylindrical screen 42 fitted onto the rotating shaft 41, and a support 43 that fixes the rotating shaft 41 and the cylindrical screen 42 together. Obviously, the sieve barrel 4 can also adopt other suitable screening structures.

[0026] As a preferred technical solution in this embodiment, the spiral guide vane 8 is made of wear-resistant polytetrafluoroethylene sheet and is connected to the screen barrel 4 by bolts. This method has higher wear resistance and lower operating noise.

[0027] During operation, the gypsum board is crushed into granules, which are continuously fed into the screen barrel 4 through the feed hopper 3. Driven by the reduction motor 7, the screen barrel 4 rotates continuously, ensuring that the material moves steadily towards the discharge hopper 6 under the effective guidance of the spiral guide vanes 8. During this process, finer gypsum powder can fall smoothly into the collection hopper 5 through the holes in the screen barrel 4, while impurities such as paper scraps are gradually pushed to the other end of the screen barrel 4 and eventually fall into the discharge hopper 6 for removal. Once the gypsum powder enters the collection hopper 5, it is further conveyed by the screw conveyor 10 to the rotary feed valve 11. This rotary feed valve 11 not only precisely controls the discharge speed of the gypsum powder but also effectively seals the pneumatic conveying pipe 12, preventing a drop in air pressure. After being precisely controlled by the rotary feed valve 11, the gypsum powder released then enters the pneumatic conveying pipe 12. Driven by the powerful airflow generated by the Roots blower 13, it is transported efficiently and quickly along the conveying pipe to the raw material workshop for subsequent processing or application. This process ensures the purity of the material and improves production efficiency and the reliability of material transmission.

[0028] The screw conveyor 10, rotary feeder valve 11, and Roots blower 13 involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art and need not be described in detail. Furthermore, the scope of protection of this utility model does not involve improvements to the software and methods.

[0029] In the description of the above embodiments, for the sake of brevity and clarity, some components and their specific structural details that are not directly related to the core innovations of this invention have been omitted. These omitted parts all fall within the scope of existing technology, and those skilled in the art can fully implement the design and manufacture of these parts based on their professional knowledge and existing technical materials. Therefore, they will not be described in detail here.

[0030] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A screening device for recycling gypsum board, comprising a frame (1), a housing (2) fixedly connected to the frame (1), a feed hopper (3) disposed at one end of the housing (2), a screen barrel (4) rotatably installed inside the housing (2), a collection hopper (5) disposed at the lower part of the housing (2), a slag discharge hopper (6) disposed at the lower part of the housing (2) for discharging paper scraps, and a reduction motor (7) for driving the screen barrel (4) to rotate; characterized in that: The inner wall of the sieve barrel (4) is provided with a spiral guide plate (8), and a roller brush (9) is provided between the shell (2) and the sieve barrel (4). The roller brush (9) is rotatably connected to the shell (2) and in contact with the outside of the sieve barrel (4). The roller brush (9) is located in the upper middle part of the shell (2). A screw conveyor (10) is provided at the outlet of the hopper (5). A rotary feed valve (11) is connected to the outlet of the screw conveyor (10). A pneumatic conveying pipe (12) is connected to the outlet of the rotary feed valve (11). A Roots blower (13) is connected to one end of the pneumatic conveying pipe (12).

2. The screening device for gypsum board recycling according to claim 1, characterized in that: A baffle ring (14) is provided on the screen barrel (4) at one end of the feed hopper (3).

3. The screening device for gypsum board recycling according to claim 1, characterized in that: The sieve barrel (4) includes a rotating shaft (41) rotatably connected to the housing (2), a cylindrical screen (42) fitted onto the rotating shaft (41), and a bracket (43) that fixes the rotating shaft (41) and the cylindrical screen (42).

4. The screening device for gypsum board recycling according to claim 1, characterized in that: The spiral guide vane (8) is made of wear-resistant polytetrafluoroethylene sheet and is connected to the screen barrel (4) by bolts.

Images