Screening device for preparing calcium-zinc stabilizer

Abstract

The invention belongs to the technical field of calcium-zinc stabilizer processing, and discloses a screening device for calcium-zinc stabilizer preparation, which comprises a main body shell, and further comprises a turning and cleaning assembly, a screening assembly, a screening assembly, a screening assembly, a screening assembly and a screening assembly, and the turning and cleaning assembly is mounted in the main body shell and is used for turning powder in the main body shell; the adjusting assembly is arranged in the overturning cleaning assembly and used for adjusting the overturning cleaning assembly; according to the device, through cooperation of structures such as the overturning cleaning assembly and the adjusting assembly, the overturning cleaning assembly can be adjusted conveniently, the overturning cleaning assembly can be switched between an overturning scraping plate and a brush, and therefore the interior of the main body shell and the interior of the sieve plate can be cleaned conveniently and rapidly; and then, an adjusting rod pulls a sliding block to move through a push rod, so that the sliding block outwards pushes a sliding plate to move to abut against a limiting fixing plate, and at the moment, a brush can push an overturning scraping plate to overturn towards the two sides.

Description

Technical Field

[0001] The present invention belongs to the technical field of calcium-zinc stabilizer processing, and specifically relates to a screening device for preparing calcium-zinc stabilizer. Background Art

[0002] Calcium-zinc stabilizer is an additive widely used in plastic processing, mainly used to stabilize the performance of plastics during processing, prevent materials from degrading or deteriorating due to factors such as heat, light, and oxygen. Calcium-zinc stabilizer is a composite stabilizer composed of calcium salts and zinc salts, usually used in combination with organic or inorganic compounds. It is mainly used in the processing of polyvinyl chloride resin to improve the thermal stability, mechanical properties, and durability of materials.

[0003] After the calcium salts and zinc salts are pulverized, screening is required to screen out sufficiently small particle powders and recycle larger particles for secondary pulverization. For the screening equipment, during screening, due to the small particle powders, they are prone to sticking to the inner wall and the sieve plate. The traditional cleaning method is to disassemble and clean, which causes a certain waste of raw materials and is relatively cumbersome. Therefore, a screening device for preparing calcium-zinc stabilizer is proposed. Summary of the Invention

[0004] To solve the problems of cumbersome cleaning method and partial waste mentioned in the above background art, the present invention provides a screening device for preparing calcium-zinc stabilizer.

[0005] To achieve the above object, the present invention provides the following technical solution: A screening device for preparing calcium-zinc stabilizer, including a main body housing, and further including:

[0006] A turning and cleaning assembly, which is installed inside the main body housing for turning the powder inside the main body housing;

[0007] An adjustment assembly, which is arranged inside the turning and cleaning assembly for adjusting the turning and cleaning assembly;

[0008] A locking assembly, which is installed inside the turning and cleaning assembly for internally locking the turning and cleaning assembly;

[0009] Among them, the turning and cleaning assembly includes a rotating bracket movably connected inside the main body housing, a pair of turning scrapers are installed in the middle of the rotating bracket, and a sliding plate is slidably connected inside the rotating bracket;

[0010] The adjustment assembly includes an adjustment rod slidably connected inside the rotating bracket, a plurality of push rods are linearly distributed and rotatably connected to one side of the adjustment rod, and one end of the push rod is rotatably connected to a sliding block.

[0011] Preferably, the rotating bracket is rotatably connected to the main body housing, and both ends of the rotating bracket penetrate the main body housing and extend to the outside of the main body housing. A motor is installed on the side of the main body housing, and the output end of the motor is fixedly connected to one end of the rotating bracket. A sieve plate is installed inside the main body housing, and the sieve plate is installed in an arc shape on the lower side of the rotating bracket.

[0012] Preferably, support rods with corresponding positions are provided at both ends of the rotating bracket. The turning scraper is located at one end of the support rod away from the rotating bracket, and the turning scraper is rotatable with the rotating bracket. Limit bumps are fixedly connected in a linear distribution inside the rotating bracket, and all the limit bumps face away from the motor.

[0013] Preferably, a brush is fixedly connected to one side of the sliding plate, and a pair of limit baffles are fixedly connected to the sliding plate in the middle of the brush. The sliding plate is located in the middle of the turning scraper, and limit clamping blocks I are fixedly connected in a linear distribution in the middle of the turning scraper.

[0014] Preferably, chutes are opened on both sides of the sliding block, and extrusion blocks are slidably connected inside the chutes. One end of the extrusion block penetrates the rotating bracket and is slidably connected with the rotating bracket. Fixed abutting blocks are arranged at positions corresponding to the extrusion blocks on the outside of the turning scraper. The fixed abutting blocks can be clamped with the extrusion blocks after the turning scraper flips to abut against the rotating bracket.

[0015] Preferably, the sides of the sliding blocks away from the push rods are fixedly connected to the sliding plates. The push rods can abut against the limit bumps. One end of the push rod connected to the sliding block is also slidably connected with the rotating bracket. One end of the adjusting rod penetrates the rotating bracket and extends to the outside of the main body housing. A pair of fixing holes I are opened at one end of the adjusting rod located outside the main body housing. At the same time, fixing holes II matching the fixing holes I of the adjusting rod are opened on the outside of the same end of the rotating bracket.

[0016] Preferably, the locking assembly includes a limit fixing plate. A sliding rod is slidably connected to one side of the limit fixing plate. Limit clamping blocks II are fixedly connected in a linear distribution on one side of the sliding rod, and the length value of the limit clamping blocks II is less than the distance value between the middle of a pair of limit clamping blocks I.

[0017] Preferably, the end of the sliding rod away from the motor penetrates the rotating bracket and is movably connected with the rotating bracket. One end of the sliding rod can be turned and folded into the inside of the rotating bracket, and a fixing part is arranged at the same end of the sliding rod. The fixing part can be fixedly connected to the rotating bracket through bolts to fix the sliding rod.

[0018] Preferably, the limit fixing plate is located inside a pair of turning scrapers and abuts against the turning scrapers. The sliding rod can slide along the limit fixing plate toward the side of the motor, so that the limit clamping blocks II are clamped with the limit clamping blocks I, and a pair of turning scrapers are closed and fixed.

[0019] Preferably, after the second limiting block is disengaged from the flipping scraper, pulling the adjusting rod outward at this time can move the sliding block through the push rod by the adjusting rod, so that the sliding block pushes the sliding plate outward, and the flipping scraper is pushed by the sliding plate to flip to both sides.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] Through the cooperation of structures such as the flipping and cleaning assembly and the adjusting assembly, the present invention facilitates the adjustment of the flipping and cleaning assembly, enabling it to switch between the flipping scraper and the brush, thereby conveniently cleaning the inside of the main body housing and the sieve plate. By pulling the sliding rod outward, the first limiting block is disengaged from the second limiting block, and then the adjusting rod pulls the sliding block to move through the push rod, so that the sliding block pushes the sliding plate outward to abut against the limiting fixing plate. At this time, the brush will push the flipping scraper to flip to both sides, thereby replacing the brush and the flipping scraper;

[0022] Through the cooperation of structures such as the locking assembly and the flipping and cleaning assembly, the present invention facilitates the fixing of the flipping scraper. By sliding the sliding rod, the second limiting block moves along the limiting fixing plate towards the first limiting block, and the second limiting block is engaged with the first limiting block, thereby fixing the flipping scraper and preventing the flipping scraper from flipping, thus conveniently closing and fixing the flipping scraper. At the same time, the flipping scraper can protect the brush and prevent the brush from adhering to dust during screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 is a side cross-sectional view of the overall structure of the present invention;

[0025] Figure 3 is a middle cross-sectional view of the flipping and cleaning assembly of the present invention;

[0026] Figure 4 is a sectional and split view of the rotating bracket of the present invention;

[0027] Figure 5 is Figure 4 the enlarged view at A in

[0028] Figure 6 is a split schematic diagram of the locking assembly of the present invention.

[0029] In the figure: 1. Main body housing; 2. Motor; 3. Turning and cleaning assembly; 301. Rotating bracket; 302. Turning scraper; 303. Limit bump; 304. Sliding plate; 305. Brush; 306. First limit clamping block; 307. Fixed abutting block; 4. Adjusting assembly; 401. Adjusting rod; 402. Push rod; 403. Sliding block; 404. Chute; 405. Extrusion block; 5. Locking assembly; 501. Limit fixing plate; 502. Sliding rod; 503. Second limit clamping block; 504. Fixing piece; 6. Sieve plate. Detailed implementation mode

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0031] As Figures 1 to 6 shown, the present invention provides a screening device for preparing calcium-zinc stabilizer, further comprising:

[0032] A turning and cleaning assembly 3, which is installed inside the main body housing 1 for turning the powder inside the main body housing 1;

[0033] An adjusting assembly 4, which is arranged inside the turning and cleaning assembly 3 for adjusting the turning and cleaning assembly 3;

[0034] A locking assembly 5, which is installed inside the turning and cleaning assembly 3 for internally locking the turning and cleaning assembly 3;

[0035] Among them, the turning and cleaning assembly 3 includes a rotating bracket 301 movably connected inside the main body housing 1. A pair of turning scrapers 302 are installed in the middle of the rotating bracket 301, and a sliding plate 304 is slidably connected inside the rotating bracket 301;

[0036] The adjusting assembly 4 includes an adjusting rod 401 slidably connected inside the rotating bracket 301. A plurality of push rods 402 are rotatably connected in a linear distribution on one side of the adjusting rod 401, and one end of the push rod 402 is rotatably connected to a sliding block 403.

[0037] Adopt the above solution: By pulling the sliding rod 502 to move outward, the first limiting block 306 and the second limiting block 503 are disengaged from the clamping connection, and the clamping connection of the turning scraper 302 is synchronously released. Then, the adjusting rod 401 pulls the sliding block 403 to move through the push rod 402, so that the sliding block 403 pushes the sliding plate 304 outward to abut against the limiting fixing plate 501. At this time, the brush 305 will push the turning scraper 302 to flip to both sides, so that the turning scraper 302 flips to abut against the rotating bracket 301. At the same time, the sliding block 403 will synchronously push the extrusion block 405 to move upward, and the extrusion block 405 is clamped with the fixed abutting block 307 to fix the turning scraper 302 and fix the brush 305 at the same time. Then, the motor 2 can be started again, and the inner wall of the main body housing 1 and the sieve plate 6 are cleaned by the brush 305;

[0038] As Figures 2 to 4 shown, the rotating bracket 301 is rotatably connected to the main body housing 1, and both ends of the rotating bracket 301 penetrate the main body housing 1 and extend to the outside of the main body housing 1. The motor 2 is installed on the side of the main body housing 1, and the output end of the motor 2 is fixedly connected to one end of the rotating bracket 301. The sieve plate 6 is installed inside the main body housing 1, and the sieve plate 6 is installed in an arc shape on the lower side of the rotating bracket 301;

[0039] Both ends of the rotating bracket 301 are provided with support rods corresponding in position. The turning scraper 302 is located at one end of the support rod away from the rotating bracket 301 and the turning scraper 302 rotates with the rotating bracket 301. The limiting convex blocks 303 are fixedly connected in a linear distribution inside the rotating bracket 301, and the limiting convex blocks 303 all face away from the motor 2.

[0040] Adopt the above solution: By setting the rotating bracket 301 and the turning scraper 302, the rotating bracket 301 drives the turning scraper 302 to rotate, so that the turning scraper 302 turns the powder inside the main body housing 1, so that the powder can be dispersed and screened out through the sieve plate 6. When the turning scraper 302 rotates, it can disperse the powder agglomerated by extrusion. The setting of the limiting convex blocks 303 is used to limit the push rod 402, so that the push rod 402 can be limited by the limiting convex blocks 303 to flip. At the same time, the limiting convex blocks 303 will abut against the sliding block 403 to limit the sliding block 403. The setting of the motor 2 is used to drive the rotating bracket 301 to rotate.

[0041] As Figures 2 to 4 shown, one side of the sliding plate 304 is fixedly connected with a brush 305, and a pair of limiting baffles are fixedly connected to the middle of the brush 305 and the sliding plate 304. The sliding plate 304 is located in the middle of the turning scraper 302, and the first limiting blocks 306 are fixedly connected in a linear distribution in the middle of the turning scraper 302.

[0042] Adopting the above solution: By setting the sliding plate 304 and the brush 305, the brush 305 is used to clean the powder adhered to the inner wall of the main body housing 1 and the sieve plate 6, so that the powder is brushed off and then sieved out from the sieve plate 6. The limit baffle provided in the middle of the brush 305 is used to block the brush 305, so that after the brush 305 is deformed due to use, it will not bend towards the middle. When the brush 305 moves towards the limit fixing plate 501 during the second use, the brush 305 is squeezed by the limit fixing plate 501 and biased towards the middle to be blocked between the sliding plate 304 and the limit fixing plate 501. The setting of the first limit block 306 is used to fix the turning scraper 302, so that the turning scraper 302 remains fixed during operation.

[0043] As Figures 3 to 5 shown, sliding grooves 404 are formed on both sides of the sliding block 403. An extrusion block 405 is slidably connected inside the sliding groove 404. One end of the extrusion block 405 penetrates through the rotating bracket 301 and is slidably connected with the rotating bracket 301. A fixed abutting block 307 is provided at a position corresponding to the extrusion block 405 on the outer side of the turning scraper 302. The fixed abutting block 307 can be clamped with the extrusion block 405 after the turning scraper 302 is flipped to abut against the rotating bracket 301.

[0044] Both sides of the sliding block 403 away from the push rod 402 are fixedly connected to the sliding plate 304. The push rod 402 can abut against the limit convex block 303. One end of the push rod 402 connected to the sliding block 403 is simultaneously slidably connected with the rotating bracket 301. One end of the adjusting rod 401 penetrates through the rotating bracket 301 and extends to the outside of the main body housing 1. A pair of first fixing holes are formed at one end of the adjusting rod 401 located outside the main body housing 1. At the same time, second fixing holes matching the first fixing holes of the adjusting rod 401 are formed on the outer side of the same end of the rotating bracket 301.

[0045] Adopting the above solution: By setting the adjusting rod 401, the adjusting rod 401 drives the push rod 402 to move, so that the push rod 402 pushes or pulls the sliding block 403 to move, and the sliding block 403 drives the sliding plate 304 to move. When the sliding block 403 pushes the sliding plate 304 to move until it abuts against the limit fixing plate 501, at this time, the extrusion block 405 will be pushed to move upward synchronously. The extrusion block 405 is clamped with the fixed abutting block 307 to fix the turning scraper 302, so as to prevent the turning scraper 302 from shaking randomly when the brush 305 rotates to clean the inner wall of the main body housing 1 and the sieve plate 6.

[0046] The cooperation between the pair of first fixing holes provided at one end of the adjusting rod 401 and the second fixing holes on the rotating bracket 301 fixes the adjusting rod 401 through bolts, so as to adjust and lock the use of the turning scraper 302 and the brush 305.

[0047] As Figures 3 to 6As shown in the figure, the locking component 5 includes a limit fixing plate 501. One side of the limit fixing plate 501 is slidably connected with a sliding rod 502. On one side of the sliding rod 502, limit blocks two 503 are fixedly connected in a linear distribution, and the length value of the limit blocks two 503 is less than the distance value between a pair of limit blocks one 306.

[0048] One end of the sliding rod 502 away from the motor 2 penetrates through the rotating bracket 301 and is movably connected with the rotating bracket 301. One end of the sliding rod 502 can be turned and folded into the inside of the rotating bracket 301, and a fixing member 504 is arranged at the same end of the sliding rod 502. The fixing member 504 can be fixedly connected with the rotating bracket 301 through bolts to fix the sliding rod 502.

[0049] The limit fixing plate 501 is located inside a pair of turning scrapers 302 and abuts against the turning scrapers 302. The sliding rod 502 can slide along the side of the limit fixing plate 501 facing the motor 2, so that the limit blocks two 503 are clamped with the limit blocks one 306, and a pair of turning scrapers 302 are closed and fixed.

[0050] Adopting the above scheme: By setting the limit fixing plate 501, it is convenient to fix the turning scraper 302. Through the sliding of the sliding rod 502, the limit blocks two 503 move along the limit fixing plate 501 towards the limit blocks one 306, so that the limit blocks two 503 are clamped with the limit blocks one 306, thereby fixing the turning scraper 302 and making the turning scraper 302 unable to be turned over.

[0051] The setting of the limit fixing plate 501 can also limit the sliding plate 304, so that the sliding plate 304 is clamped with the limit fixing plate 501, thereby keeping the extended sliding plate 304 and the brush 305 fixed and avoiding shaking during operation.

[0052] By setting the fixing member 504, the sliding rod 502 can be fixed. When the limit blocks two 503 are disengaged from the clamping with the limit blocks one 306 during the sliding of the sliding rod 502, one end of the sliding rod 502 will be turned and folded at this time. At this time, the bent end of the sliding rod 502 can be fixed through the fixing member 504.

[0053] As Figures 2 to 6 As shown in the figure, after the limit blocks two 503 are disengaged from the clamping with the turning scraper 302, at this time, pulling the adjusting rod 401 to move outward can push the sliding block 403 to move through the push rod 402 by the adjusting rod 401, so that the sliding block 403 pushes the sliding plate 304 to move outward, and the turning scraper 302 is pushed by the sliding plate 304 to turn to both sides.

[0054] Adopting the above solution: When the second limit catch 503 is disengaged from the flipping scraper 302, at this time, pulling the adjusting rod 401 to move outward can drive the push rod 402 to move by the adjusting rod 401, so that the push rod 402 pushes the sliding block 403 to move upward, causing the sliding block 403 to push the sliding plate 304 to move, so that the flipping scraper 302 is pushed by the sliding plate 304 to flip to both sides, and the brush 305 is exchanged with the flipping scraper 302.

[0055] The working principle and usage process of the present invention: When in use, start the motor 2 to rotate the rotating bracket 301, so that the rotating bracket 301 drives the flipping scraper 302 to rotate, flip the powder inside the main body housing 1, and make the powder pass through the top of the sieve plate 6 for screening.

[0056] When it is necessary to clean the inner wall of the main body housing 1, at this time, adjust the rotating bracket 301 to the state where the flipping scraper 302 is vertically upward, then unlock the sliding rod 502, pull the sliding rod 502 to move outward, so that the first limit catch 306 is disengaged from the second limit catch 503, and the flipping scraper 302 is simultaneously disengaged. Then drive the push rod 402 to move through the adjusting rod 401, so that the push rod 402 pulls the sliding block 403 to move, make the sliding block 403 drive the sliding plate 304 to move outward, and make the sliding block 403 push the sliding plate 304 to move until it abuts against the limit fixing plate 501. At this time, the brush 305 will push the flipping scraper 302 to flip to both sides, so that the flipping scraper 302 flips until it abuts against the rotating bracket 301. At the same time, the sliding block 403 will simultaneously push the extrusion block 405 to move upward, and the extrusion block 405 is engaged with the fixed abutting block 307 to fix the flipping scraper 302, and at the same time fix the brush 305. Then the motor 2 can be started again, and the inner wall of the main body housing 1 and the sieve plate 6 are cleaned by the brush 305.

[0057] When it is necessary to retract the brush 305, at this time, adjust the brush 305 to the vertically downward direction, and then perform the above operations in reverse to complete the closing and fixing of the flipping scraper 302.

[0058] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0059] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A screening device for preparing a calcium zinc stabilizer, comprising a main housing (1), characterized in that: Also includes: A stirring and cleaning component (3) is installed inside the main body shell (1) and is used to stir the powder inside the main body shell (1); An adjustment component (4) is arranged inside the turning and cleaning component (3) and is used to adjust the turning and cleaning component (3); A locking assembly (5) installed inside the flipping and cleaning assembly (3) for internally locking the flipping and cleaning assembly (3); The turning and cleaning assembly (3) comprises a rotating bracket (301) movably connected to the inside of the main housing (1), a pair of turning scrapers (302) are installed in the middle of the rotating bracket (301), and a sliding plate (304) is slidably connected to the inside of the rotating bracket (301); The adjustment assembly (4) comprises an adjustment rod (401) slidably connected inside the rotating bracket (301), one side of the adjustment rod (401) is linearly distributed and rotatably connected to a plurality of push rods (402), and one end of the push rod (402) is rotatably connected to a sliding block (403).

2. The screening device for preparing calcium zinc stabilizer according to claim 1, characterized in that: The rotating bracket (301) is rotatably connected to the main shell (1), and both ends of the rotating bracket (301) penetrate the main shell (1) and extend to the outside of the main shell (1). A motor (2) is installed on the side of the main shell (1), and the output end of the motor (2) is fixedly connected to one end of the rotating bracket (301). A sieve plate (6) is installed inside the main shell (1), and the sieve plate (6) is installed in an arc shape on the lower side of the rotating bracket (301).

3. The screening device for preparing calcium zinc stabilizer according to claim 1, characterized in that: Support rods corresponding to the positions are arranged at both ends of the rotating bracket (301); the flipping scraper (302) is located at one end of the support rod away from the rotating bracket (301); the flipping scraper (302) rotates with the rotating bracket (301); and the rotating bracket (301) is linearly distributed with fixedly connected limiting protrusions (303) inside, and the limiting protrusions (303) are all facing the side away from the motor (2).

4. The screening device for preparing calcium zinc stabilizer according to claim 1, characterized in that: A brush (305) is fixedly connected to one side of the sliding plate (304), and a pair of limit baffles are provided in the middle of the brush (305) and fixedly connected to the sliding plate (304). The sliding plate (304) is located in the middle of the flipping scraper (302), and a limit block (306) is fixedly connected to the middle of the flipping scraper (302) in a linearly distributed manner.

5. The screening device for preparing calcium zinc stabilizer according to claim 1, characterized in that: Slide grooves (404) are provided on both sides of the sliding block (403), and an extrusion block (405) is slidably connected inside the slide groove (404). One end of the extrusion block (405) penetrates the rotating bracket (301) and is slidably connected to the rotating bracket (301). A fixed stop block (307) is provided on the outer side of the flipping scraper (302) at a position corresponding to the position of the extrusion block (405). The fixed stop block (307) can be engaged with the extrusion block (405) after the flipping scraper (302) is flipped to contact the rotating bracket (301).

6. The screening device for preparing calcium zinc stabilizer according to claim 5, characterized in that: The side of the sliding block (403) away from the push rod (402) is fixedly connected to the sliding plate (304), and the push rod (402) can contact the limiting protrusion (303). The end of the push rod (402) connected to the sliding block (403) is also slidably connected to the rotating bracket (301). One end of the adjustment rod (401) penetrates the rotating bracket (301) and extends to the outside of the main shell (1). A pair of fixing holes (1) are opened at one end of the adjustment rod (401) located on the outside of the main shell (1), and a fixing hole (2) matching the fixing hole (1) of the adjustment rod (401) is opened on the outside of the same end of the rotating bracket (301).

7. The screening device for preparing calcium zinc stabilizer according to claim 1, characterized in that: The locking assembly (5) comprises a limit fixing plate (501), one side of the limit fixing plate (501) is slidably connected to a sliding rod (502), one side of the sliding rod (502) is linearly and fixedly connected to a limit clamping block 2 (503), and the length of the limit clamping block 2 (503) is less than the spacing between a pair of limit clamping blocks 1 (306).

8. The screening device for preparing calcium zinc stabilizer according to claim 7, characterized in that: The end of the sliding rod (502) away from the motor (2) penetrates the rotating bracket (301) and is movably connected to the rotating bracket (301); one end of the sliding rod (502) can be turned and bent to enter the interior of the rotating bracket (301); and a fixing piece (504) is provided at the same end of the sliding rod (502); the fixing piece (504) can be fixedly connected to the rotating bracket (301) by bolts and fix the sliding rod (502).

9. The screening device for preparing calcium zinc stabilizer according to claim 7, characterized in that: The limit fixing plate (501) is located inside the pair of flipping scrapers (302) and contacts the flipping scrapers (302). The sliding rod (502) can slide along the limit fixing plate (501) toward the side of the motor (2), so that the limit clamping block 2 (503) is clamped with the limit clamping block 1 (306), so that the pair of flipping scrapers (302) are closed and fixed.

10. The screening device for preparing calcium zinc stabilizer according to claim 7, characterized in that: After the second limit block (503) is released from the engagement with the flipping scraper (302), the adjusting rod (401) is pulled outward to move, and the adjusting rod (401) can push the sliding block (403) to move through the push rod (402), so that the sliding block (403) pushes the sliding plate (304) to move outward, and the flipping scraper (302) is pushed by the sliding plate (304) to flip to both sides.

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