Grading screening equipment for gypsum powder production

Abstract

The utility model relates to the technical field of gypsum powder screening, in particular to grading screening equipment for gypsum powder production. Comprising a screening box, and a screening mechanism is arranged in the screening box; wherein the screening mechanism comprises two sliding blocks which are in sliding connection with one side of the inner wall of the screening box, one side of each sliding block is rotationally connected with a screening plate, and the two screening plates with different pore diameters are driven by two vibration motors on the surfaces of the screening plates in the screening mechanism to vibrate in a reciprocating mode, so that classified screening operation of gypsum powder is achieved, and the screening efficiency is improved. And after screening, a rotary button is used for driving the screening plate to rotate by 180 degrees, the top end of the screening plate becomes the bottom end after rotation during screening, meanwhile, a vibration motor is used for making the rotated screening plate vibrate in a reciprocating mode, gypsum powder left on the screening plate falls down under the vibration effect, and therefore cleaning operation on the screening plate is completed. Meshes of the sieve plate are prevented from being blocked, and the gypsum powder screening efficiency of the sieve plate is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of gypsum powder screening technology, and in particular to a grading and screening device for gypsum powder production. Background Technology

[0002] Gypsum powder is a type of gelling material that is widely used in industries such as building decoration and medicine. During the processing of gypsum powder, in order to obtain gypsum powder products with different particle sizes to meet specific application requirements, grading and screening equipment is usually used to screen the gypsum powder.

[0003] According to the Chinese patent "A Screening Device for Building Gypsum Powder" (authorization announcement number CN220072374U), during screening, a drive component is used to drive the gypsum powder screens on both sides to swing up and down towards the side closer to the connecting component. Then, the vibration motor is started, transmitting the vibration force to the gypsum powder screens. Vibration screening is then carried out simultaneously with the up-and-down swing screening, which improves the screening effect of gypsum powder. At the same time, because the gypsum powder screens swing, the possibility of gypsum powder accumulating on the gypsum powder screens and causing clogging is greatly reduced.

[0004] Although the above-mentioned application can screen gypsum powder, some gypsum powder will remain on the surface of the screen and inside the mesh during screening. As the amount of retained gypsum powder gradually increases, it will still cause the mesh of the screen to become clogged, thereby affecting the screening efficiency of gypsum powder.

[0005] Therefore, a grading and screening device for gypsum powder production is proposed to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a grading and screening device for gypsum powder production to solve the above-mentioned problems. It improves the problem that gypsum powder will remain on the surface and inside the mesh of the screen during screening, and the mesh will still be blocked when the amount of gypsum powder remaining gradually increases, thus affecting the screening efficiency of gypsum powder.

[0007] The present invention achieves the above objectives through the following technical solution: a grading and screening device for gypsum powder production, comprising: a screening box, wherein a screening mechanism is provided inside the screening box;

[0008] The screening mechanism includes two sliders slidably connected to one side of the inner wall of the screening box. A screen plate is rotatably connected to one side of each slider. The surface of the screen plate is in contact with the inner wall of the screening box. The mesh diameter of the upper screen plate is larger than that of the lower screen plate. One end of the rotating shaft of the screen plate passes through the slider and is fixedly connected to a knob. Two rings are rotatably connected to the other side of the inner wall of the screening box. A vibration motor is fixedly connected to one end of each ring. The output shafts of the two vibration motors are respectively fixedly connected to the bottom ends of the two screen plates.

[0009] Preferably, the inner wall of the screening box is rotatably connected with multiple evenly distributed partitions, which are positioned between two screen plates. One end of the rotating shaft of each partition extends through the screening box and is fixedly connected to a gear. A rack is slidably connected to one side of the screening box, and the surfaces of the multiple gears mesh with the rack. This facilitates the interception of gypsum powder falling from the upper screen plate during cleaning, preventing it from falling onto the lower screen plate and thus improving the cleaning effect on the screen plates.

[0010] Preferably, the inner wall of the knob is threaded with a threaded rod, and the other side of the slider has two threaded holes, with the included angle between the center points of the two threaded holes being 180 degrees. This helps to limit the movement of the screen plate during reciprocating vibration and prevents the screen plate from rotating during vibration.

[0011] Preferably, two fixed blocks are fixedly connected to one side of the screening box, and a lead screw is rotatably connected between the opposite sides of the two fixed blocks. A movable block is threadedly connected to the surface of the lead screw, and the top end of the movable block is fixedly connected to the bottom end of the rack. This facilitates the movement of the rack.

[0012] Preferably, a limiting plate is fixedly connected to the inner wall of the screening box. This helps to limit the rotation angle of the partition and reduces the difficulty for operators to rotate the partition to a horizontal position.

[0013] Preferably, the surface of the knob is fixedly connected with a plurality of protrusions arranged in a ring, the protrusions being rubber components. This makes it easier for workers to turn the knob without exerting force.

[0014] Preferably, one end of the lead screw passes through one of the fixing blocks and is fixedly connected to a rotating rod. This facilitates easier rotation of the lead screw by the operator.

[0015] The beneficial effects of this utility model are:

[0016] The screening mechanism described above uses two vibrating motors to drive two screen plates with different apertures to vibrate back and forth, which is beneficial for classifying and screening gypsum powder. After screening, the screen plates are rotated 180 degrees by a knob, which makes the top of the screen plate during screening become the bottom after rotation. At the same time, the vibrating motors make the rotated screen plates vibrate back and forth. Under the action of vibration, the gypsum powder stuck on the screen plates falls downward, thereby completing the cleaning operation of the screen plates, avoiding the clogging of the screen plate mesh, and ensuring the screening efficiency of the screen plates for gypsum powder.

[0017] When cleaning the sieve plate, the arrangement of multiple partitions helps to intercept the gypsum powder falling from the upper sieve plate during the cleaning process, preventing the gypsum powder from falling onto the lower sieve plate and thus improving the cleaning effect of the sieve plate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the screening mechanism of this utility model;

[0020] Figure 3 This is an exploded view of the sieve plate and sieve box of this utility model;

[0021] Figure 4 This is an exploded view of the threaded rod and knob of this utility model;

[0022] Figure 5 This is a schematic diagram of the partition installation structure of this utility model.

[0023] In the diagram: 1. Screening box; 2. Screening mechanism; 21. Screen plate; 22. Ring; 23. Vibrating motor; 24. Slider; 25. Knob; 26. Partition plate; 27. Gear; 28. Rack; 29. ​​Fixed block; 210. Lead screw; 211. Moving block; 212. Threaded hole; 213. Threaded rod; 214. Limiting plate; 215. Protrusion. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In practical implementation: such as Figure 1-5 As shown, a grading and screening device for gypsum powder production includes: a screening box 1, and a screening mechanism 2 is provided inside the screening box 1;

[0026] The screening mechanism 2 includes two sliders 24 that are slidably connected to one side of the inner wall of the screening box 1. Each slider 24 is rotatably connected to a screen plate 21. The surface of the screen plate 21 is in contact with the inner wall of the screening box 1. The mesh diameter of the upper screen plate 21 is larger than that of the lower screen plate 21. One end of the rotating shaft of the screen plate 21 passes through the slider 24 and is fixedly connected to a knob 25. Two rings 22 are rotatably connected to the other side of the inner wall of the screening box 1. One end of the ring 22 is fixedly connected to a vibration motor 23. The output shafts of the two vibration motors 23 are fixedly connected to the bottom ends of the two screen plates 21 respectively.

[0027] In this embodiment, the top of the screening box 1 is provided with a feed inlet. When screening gypsum powder, the gypsum powder is poured into the upper screen plate 21 through the feed inlet for screening. The center of the ring 22 coincides with the rotation center point of the screen plate 21. Therefore, when the screen plate 21 rotates, it will drive the ring 22 and the vibration motor 23 to rotate synchronously.

[0028] The surface of the screening box 1 has two openings, and the two openings are equipped with covers. When the two screen plates 21 have completed the screening of gypsum powder, the two covers can be opened to collect the gypsum powder on the two screen plates 21.

[0029] like Figure 2 , Figure 3 and Figure 5 As shown, the inner wall of the screening box 1 is rotatably connected with multiple evenly distributed partitions 26. The partitions 26 are located between two screen plates 21. One end of the rotating shaft of the multiple partitions 26 passes through the screening box 1 and is fixedly connected with a gear 27. A rack 28 is slidably connected to one side of the screening box 1. The surfaces of the multiple gears 27 are all meshed with the rack 28.

[0030] In this embodiment, a limiting block is fixedly connected to one side of the rack 28. The surface of the limiting block is slidably connected to the inner wall of the screening box 1, thereby limiting the movement of the rack 28. When the two sieve plates 21 are in a horizontal state to screen gypsum powder, and multiple partitions 26 are in a vertical state, the rack 28 can be pushed to move to drive multiple gears 27 to rotate synchronously, thereby causing the gears 27 to drive the corresponding partitions 26 to rotate 90 degrees counterclockwise and be in a horizontal state.

[0031] like Figure 4 As shown, the inner wall of the knob 25 is threaded with a threaded rod 213, and the other side of the slider 24 has two threaded holes 212, with an included angle of 180 degrees between the center points of the two threaded holes 212.

[0032] In this embodiment, in the initial state, the threaded rod 213 is threadedly connected to the upper threaded hole 212. Rotating the knob 25 drives the screen plate 21 to rotate and threadedly connects the threaded rod 213 to the lower threaded hole 212. At this time, the screen plate 21 rotates 180 degrees and returns to a horizontal state.

[0033] like Figure 5 As shown, two fixed blocks 29 are fixedly connected to one side of the screening box 1. A lead screw 210 is rotatably connected between the opposite sides of the two fixed blocks 29. A movable block 211 is threadedly connected to the surface of the lead screw 210. The top end of the movable block 211 is fixedly connected to the bottom end of the rack 28. One end of the lead screw 210 passes through one of the fixed blocks 29 and is fixedly connected to a rotating rod.

[0034] In this embodiment, the operator rotates the rotating rod to drive the lead screw 210 to rotate, thereby driving the moving block 211 to move, and the moving block 211 drives the rack 28 to move.

[0035] like Figure 5 As shown, a limit plate 214 is fixedly connected to the inner wall of the screening box 1.

[0036] In this embodiment, when the gear 27 drives the corresponding partition 26 to rotate counterclockwise, when one of the partitions 26 comes into contact with the limiting plate 214 and can no longer rotate, the partition 26 rotates to a horizontal state.

[0037] like Figure 4 As shown, the surface of the knob 25 is fixedly connected with a plurality of protrusions 215 arranged in a ring, and the protrusions 215 are rubber components.

[0038] In this embodiment, multiple protrusions 215 increase the friction between the operator and the surface of the knob 25 when the operator rotates the knob 25, making rotation easier.

[0039] In use, gypsum powder is poured onto the upper sieve plate 21, and the two vibrating motors 23 are started by the controller to drive the two sieve plates 21 to vibrate back and forth. At the same time, gypsum powder smaller than the mesh diameter of the upper sieve plate 21 will fall onto the lower sieve plate 21, and gypsum powder smaller than the mesh diameter of the lower sieve plate 21 will be discharged from the discharge port at the bottom of the screening box 1, thereby realizing the grading and screening of gypsum powder.

[0040] After the gypsum powder is graded, when cleaning the sieve plate 21, first rotate the rotating rod to drive the lead screw 210 to rotate, thereby causing the moving block 211 to drive the rack 28 to move and drive multiple gears 27 to drive the corresponding partitions 26 to rotate counterclockwise to a horizontal state. At this time, the multiple partitions 26 form a whole. After completing this operation, disconnect the threaded rod 213 from the corresponding threaded hole 212, and drive the corresponding sieve plate 21 to rotate 180 degrees through the two knobs 25 respectively. Then connect the threaded rod 213 to another threaded hole 212. At this time, the sieve plate... The top of screen 21 becomes the bottom after rotation during screening, and the controller starts two vibrating motors 23 to drive the corresponding screen plate 21 to vibrate back and forth, so that the gypsum powder retained on the screen plate 21 falls off. The gypsum powder retained on the upper screen plate 21 will fall onto multiple partitions 26, and the gypsum powder retained on the lower screen plate 21 will be discharged from the discharge port. After cleaning, the lower screen plate 21 is rotated to a vertical state, and the multiple partitions 26 are also rotated to a vertical state. At this time, the gypsum powder on the partitions 26 will be discharged through the discharge port, thus completing the cleaning operation.

[0041] It should be noted that the vibration motor 23 and other components mentioned above are all devices with relatively mature existing technologies. The specific model can be selected according to actual needs. In addition, the vibration motor 23 can be powered by an internal power supply or by AC power. The specific power supply method should be selected according to the situation, and will not be elaborated here.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A grading and screening device for gypsum powder production, characterized in that, include: Screening box (1), the screening box (1) is provided with a screening mechanism (2); The screening mechanism (2) includes two sliders (24) that are slidably connected to one side of the inner wall of the screening box (1). Each slider (24) is rotatably connected to a screen plate (21). The surface of the screen plate (21) is in contact with the inner wall of the screening box (1). The mesh diameter of the upper screen plate (21) is larger than that of the lower screen plate (21). One end of the rotating shaft of the screen plate (21) passes through the slider (24) and is fixedly connected to a knob (25). Two rings (22) are rotatably connected to the other side of the inner wall of the screening box (1). One end of the ring (22) is fixedly connected to a vibration motor (23). The output shafts of the two vibration motors (23) are fixedly connected to the bottom ends of the two screen plates (21).

2. The grading and screening equipment for gypsum powder production according to claim 1, characterized in that: The inner wall of the screening box (1) is rotatably connected with a plurality of evenly distributed partitions (26). The partitions (26) are arranged between two screen plates (21). One end of the rotating shaft of the plurality of partitions (26) passes through the screening box (1) and is fixedly connected with a gear (27). A rack (28) is slidably connected to one side of the screening box (1). The surfaces of the plurality of gears (27) are all meshed with the rack (28).

3. The grading and screening equipment for gypsum powder production according to claim 1, characterized in that: The inner wall of the knob (25) is threaded with a threaded rod (213), and the other side of the slider (24) has two threaded holes (212), with the included angle between the center points of the two threaded holes (212) being 180 degrees.

4. The grading and screening equipment for gypsum powder production according to claim 1, characterized in that: Two fixed blocks (29) are fixedly connected to one side of the screening box (1). A screw (210) is rotatably connected between the opposite sides of the two fixed blocks (29). A movable block (211) is threadedly connected to the surface of the screw (210). The top end of the movable block (211) is fixedly connected to the bottom end of the rack (28).

5. A grading and screening device for gypsum powder production according to claim 1, characterized in that: The inner wall of the screening box (1) is fixedly connected to a limiting plate (214).

6. A grading and screening device for gypsum powder production according to claim 1, characterized in that: The surface of the knob (25) is fixedly connected with a plurality of protrusions (215) arranged in a ring, and the protrusions (215) are rubber components.

7. A grading and screening device for gypsum powder production according to claim 4, characterized in that: One end of the lead screw (210) passes through one of the fixing blocks (29) and is fixedly connected to a rotating rod.

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