A sieving apparatus for the production of powdered cosmetics

Abstract

The present application relates to the technical field of powder cosmetic production, and particularly relates to a screening device for powder cosmetic production. The present application provides a screening device for powder cosmetic production which can filter impurities of raw materials. The screening device for powder cosmetic production comprises a screening machine, a first filter screen, a brushing and grinding mechanism and a dredging mechanism. The screening machine is placed on the ground. The upper side of the screening machine is provided with a feeding port. The inside of the screening machine is connected with the first filter screen for filtering impurities in the raw materials. The inside of the screening machine is provided with the brushing and grinding mechanism for grinding the blocky raw materials. The inside of the screening machine is provided with the dredging mechanism for dredging the first filter screen. The blocky raw materials are ground by rotating the rotating brush plate. The impurities mixed in the blocky raw materials are filtered by the first filter screen. The first filter screen is dredged by the continuous up-and-down movement of the fine needle. Thus, the filtering of the impurities and the grinding of the raw materials are completed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of powder cosmetic production, and particularly relates to a screening equipment for powder cosmetic production. BACKGROUND

[0002] Raw materials of powder cosmetics include inorganic powder materials, organic powder materials and other powder materials, and the production process of powder cosmetics generally includes steps of sterilization, mixing, grinding, screening, perfuming, greasing and filling, etc. In actual production process, the raw materials can be mixed and ground and then screened, or the raw materials can be ground and screened and then mixed. At present, a screening machine is generally used to filter and screen the raw materials in the production of powder cosmetics.

[0003] Patent No. CN211802364U discloses a screening equipment for powder cosmetic production, which comprises a support seat, a screen box, a fixed plate, a rotating shaft and a grinding roller. The invention grinds and crushes coarse powder and caked powder through the grinding roller, and screens the powder through the screen mesh, thereby improving the amount of screened powder, making the screening of powder cosmetics more thorough, greatly reducing waste caused by caking and incomplete crushing and grinding, and improving the screening efficiency. However, when the equipment grinds, it cannot filter impurities in the raw materials, which will cause impurities and cosmetic powder to be crushed together during the grinding process, thereby mixing impurities in the cosmetics and reducing the quality of the cosmetics.

[0004] In view of the above-mentioned problems, it is necessary to design a screening equipment for powder cosmetic production which can filter impurities in raw materials. SUMMARY

[0005] In order to overcome the shortcomings of the conventional screening equipment that cannot screen impurities in raw materials during grinding, the technical problem to be solved is to provide a screening equipment for powder cosmetic production which can filter impurities in raw materials.

[0006] The technical scheme is as follows: a screening equipment for powder cosmetic production, comprising a screening machine, a first filter screen, a brushing mechanism and a dredging mechanism. The screening machine is placed on the ground, and the upper side of the screening machine is provided with a feeding port. The first filter screen for filtering impurities in the raw materials is connected inside the screening machine. The brushing mechanism for grinding blocky raw materials is arranged inside the screening machine. The dredging mechanism for dredging the first filter screen is arranged inside the screening machine.

[0007] As preferred, the brush grinding mechanism comprises a motor, a first fixed plate, a gear set, a fixed rod, a bearing and a rotating brush plate, the first fixed plate is connected to the left side of the inside of the screening machine, the motor is connected to the first fixed plate, the bearing is connected to the right side of the first fixed plate, the fixed rod is connected to the inner ring of the bearing, the gear set is connected between the output shaft of the motor and the fixed rod, the rotating brush plate for grinding the blocky raw materials is connected between the fixed rods, and the rotating brush plate is located on the lower side of the fixed rod and in contact with the first filter screen.

[0008] As preferred, the dredging mechanism comprises a telescopic screw rod, a sliding rod, a first spring, a moving plate, a fixed frame, a first wedge block, a pull rope, a multi-stage telescopic rod, a circular plate, a second filter screen, a fine needle and a second spring, the telescopic screw rod is connected to the inside of the right part of the gear set, the sliding rod is slidably connected to the lower side of the right part of the gear set, the sliding rod is in contact with the telescopic screw rod on the right side, the moving plate is connected to the left side of the sliding rod, the first spring is sleeved on the sliding rod, the two ends of the first spring are respectively connected to the moving plate and the gear set, the fixed frame is connected to the lower side of the gear set, the first wedge block is slidably connected to the lower side of the fixed frame, the multi-stage telescopic rod is connected between the rotating brush plate, the circular plate is rotatably connected between the multi-stage telescopic rod and the telescopic screw rod, the pull rope is connected between the circular plate and the first wedge block, the second filter screen is connected to the lower part of the telescopic screw rod and slidably connected to the screening machine, the second spring is sleeved on the lower side of the telescopic screw rod, the two ends of the second spring are respectively connected to the screening machine and the second filter screen, and the fine needles for dredging the first filter screen are evenly connected to the upper side of the second filter screen.

[0009] As preferred, the collecting mechanism for collecting impurities comprises a collecting frame, a collecting screen and a buckle, the collecting frame is slidably connected to the rotating brush plate, the collecting screen is connected to the rear side of the collecting frame, and the buckle is connected to the upper side of the collecting frame.

[0010] As preferred, the buckle is internally provided with a groove.

[0011] As preferred, the impact mechanism for impacting the collecting screen comprises an inclined arc block, a sliding plate, a sharp column and a ball block, the inclined arc block is connected to the right side of the inside of the screening machine, the sliding plate is slidably connected to the rear side of the collecting frame, the sharp columns are evenly connected to the lower side of the sliding plate, the ball block is connected to the outer side of the sliding plate, and the ball block is in contact with the inclined arc block.

[0012] As preferred, the scraping mechanism for scraping the raw materials on the inner wall of the screening machine comprises a second wedge block, a third spring and a fixed block, the fixed block is connected to the upper side of the rotating brush plate, the second wedge blocks are slidably connected to the outer side of the fixed block, the second wedge blocks are in contact with the screening machine, the third springs are sleeved on the second wedge blocks, and the two ends of the third springs are respectively connected to the second wedge blocks and the fixed block.

[0013] As preferred, the opening mechanism for taking out the cosmetic powder is further included, and the opening mechanism includes a baffle, a fourth spring and a second fixed plate, the second fixed plate is connected to the right side of the lower part of the sifter, the baffle is slidably connected to the second fixed plate, the fourth spring is sleeved to the right side of the baffle, and the two ends of the fourth spring are connected with the baffle and the second fixed plate respectively.

[0014] The beneficial effects of the present application are as follows: 1. The block-shaped raw material is ground by rotating the brush plate, the impurities mixed in the block-shaped raw material are filtered by the first filter screen, and the first filter screen is dredged by the continuous up-and-down movement of the fine needle, so that the impurities are filtered and the raw material is ground;

[0015] 2. The filter screen is rotated by the rotating brush plate to collect the particulate impurities, thereby improving the sifting efficiency;

[0016] 3. The cosmetic powder in the collection screen is caused to fall by the up-and-down movement of the sharp column on the collection screen, thereby improving the sifting efficiency and preventing the cosmetic powder from remaining in the collection screen;

[0017] 4. The raw material on the inner wall of the sifter is scraped off by the rotation of the wedge-shaped block, so as to prevent the cosmetic from remaining on the inner wall and affecting the sifting efficiency;

[0018] 5. The sifter is shielded and the material is taken out by the left-and-right movement of the baffle, so as to prevent the cosmetic powder from escaping. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application.

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the present application.

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the brush grinding mechanism of the present application.

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the first view angle of the dredging mechanism of the present application.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the second view angle of the dredging mechanism of the present application.

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the third view angle of the dredging mechanism of the present application.

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the first view angle of the collection mechanism of the present application.

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the second view angle of the collection mechanism of the present application.

[0027] Figure 9 This is a three-dimensional structural diagram of the impact mechanism of the present invention from a first-view perspective.

[0028] Figure 10 This is a three-dimensional structural diagram of the impact mechanism of the present invention from a second perspective.

[0029] Figure 11 This is a three-dimensional structural diagram of the scraping mechanism of the present invention from a first-view perspective.

[0030] Figure 12 This is a three-dimensional structural diagram of the scraping mechanism of the present invention from a second perspective.

[0031] Figure 13 This is a three-dimensional structural diagram of the opening mechanism of the present invention.

[0032] Explanation of reference numerals in the attached drawings: 1_Sieving machine, 2_First filter screen, 3_Brushing mechanism, 31_Motor, 32_First fixed plate, 33_Gear set, 34_Fixed rod, 35_Bearing, 36_Rotating brush plate, 4_Unblocking mechanism, 41_Telescopic screw, 42_Slide rod, 43_First spring, 44_Moving plate, 45_Fixed frame, 46_First wedge block, 47_Pull rope, 48_Multi-stage telescopic rod, 49_Circular plate, 4 10_Second filter screen, 411_Fine needle, 412_Second spring, 5_Collection mechanism, 51_Collection frame, 52_Collection net, 53_Snap fastener, 6_Impact mechanism, 61_Slanted arc block, 62_Sliding plate, 63_Pointed column, 64_Ball block, 7_Scraping mechanism, 71_Second wedge block, 72_Third spring, 73_Fixing block, 8_Opening mechanism, 81_Baffle, 82_Fourth spring, 83_Second fixing plate. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0034] Example 1

[0035] A sieving device for the production of powder cosmetics, such as Figures 1-2 As shown, it includes a sieve 1, a first filter screen 2, a brushing mechanism 3, and a clearing mechanism 4. The sieve 1 is placed on the ground, and a feed inlet is provided on the upper side of the sieve 1. The brushing mechanism 3 for grinding blocky raw materials is provided inside the sieve 1. The first filter screen 2 is connected inside the sieve 1 and is used to filter impurities in the raw materials. The clearing mechanism 4 is provided inside the sieve 1 and is used to clear the first filter screen 2.

[0036] like Figure 3As shown, the brush grinding mechanism 3 comprises a motor 31, a first fixed plate 32, a gear set 33, a fixed rod 34, a bearing 35 and a rotating brush plate 36. The first fixed plate 32 is connected to the left side inside the screening machine 1. The right side of the first fixed plate 32 is connected with the bearing 35. Three fixed rods 34 are connected to the inner ring of the bearing 35. The motor 31 is connected to the first fixed plate 32. The gear set 33 is connected between the fixed rods 34 and the output shaft of the motor 31. The gear set 33 is composed of two gears. One gear is connected to the output shaft of the motor 31. One gear is connected between the fixed rods. The two gears are engaged. The rotating brush plate 36 is connected between the fixed rods 34. The rotating brush plate 36 is located at the lower side of the fixed rods 34. The rotating brush plate 36 is used for grinding the blocky raw materials. The rotating brush plate 36 is in contact with the first filter screen 2.

[0037] As shown in Figure 4 , Figure 5 and Figure 6 , the dredging mechanism 4 comprises a telescopic screw rod 41, a sliding rod 42, a first spring 43, a moving plate 44, a fixed frame 45, a first wedge block 46, a pull rope 47, a multi-stage telescopic rod 48, a circular plate 49, a second filter screen 410, a fine needle 411 and a second spring 412. The sliding rod 42 is slidingly connected to the right lower side of the gear set 33. The multi-stage telescopic rod 48 is connected to the upper side of the rotating brush plate 36. The multi-stage telescopic rod 48 has two. The circular plate 49 is connected between the multi-stage telescopic rods 48. The fixed frame 45 is connected to the lower side of the gear set 33. The first spring 43 is sleeved on the sliding rod 42. The moving plate 44 is connected to the left side of the sliding rod 42. The two ends of the first spring 43 are respectively connected with the gear set 33 and the moving plate 44. The telescopic screw rod 41 is connected inside the screening machine 1. The telescopic screw rod 41 is located inside the right part of the gear set 33. The circular plate 49 is rotationally connected with the telescopic screw rod 41. The right side of the sliding rod 42 is in contact with the telescopic screw rod 41. The first wedge block 46 is slidingly connected to the lower side of the fixed frame 45. The pull rope 47 is connected between the circular plate 49 and the first wedge block 46. The second filter screen 410 is connected to the lower part of the telescopic screw rod 41. The second filter screen 410 is slidingly connected with the screening machine 1. The fine needles 411 for dredging the first filter screen 2 are uniformly connected to the upper side of the second filter screen 410. The second spring 412 is sleeved on the lower side of the telescopic screw rod 41. One end of the second spring 412 is connected with the screening machine 1. The other end is connected with the second filter screen 410.

[0038] When the cosmetic raw materials need to be sieved, the raw materials are put into the sieving machine 1 from the inlet, the switch of the motor 31 is turned on, the output shaft of the motor 31 rotates to drive the gear set 33 to rotate, the gear set 33 rotates to drive the fixed rod 34, the inner ring of the bearing 35 and the rotating brush plate 36 to rotate, the rotating brush plate 36 rotates to grind the blocky raw materials on the first filter screen 2, and the impurities mixed in the blocky raw materials cannot be ground due to their high hardness. The cosmetic powder obtained after grinding falls into the bottom of the sieving machine 1 after passing through the first filter screen 2 and the second filter screen 410, and the impurities are blocked by the first filter screen 2 and cannot fall, thereby completing the filtration of the impurities in the raw materials and the grinding of the raw materials. When the gear set 33 rotates, the slide rod 42, the first spring 43, the moving plate 44, the fixed frame 45, the first wedge block 46, the pull rope 47, the multi-stage telescopic rod 48 and the circular plate 49 are driven to rotate. Since the right side of the slide rod 42 is in contact with the telescopic lead screw 41, the telescopic lead screw 41 is stretched when the slide rod 42 rotates. The telescopic lead screw 41 is stretched to drive the circular plate 49, the second filter screen 410 and the fine needle 411 to move upward, and the multi-stage telescopic rod 48 and the second spring 412 are stretched. When the fine needle 411 moves upward, the first filter screen 2 is dredged to prevent the first filter screen 2 from being blocked by the raw materials and impurities. When the circular plate 49 moves upward and contacts the lower side of the first wedge block 46, the upward movement of the circular plate 49 drives the first wedge block 46 to move upward. When the first wedge block 46 moves upward, the moving plate 44 and the slide rod 42 move to the left side, and the first spring 43 is stretched. At this time, the slide rod 42 is no longer in contact with the telescopic lead screw 41, and the telescopic lead screw 41 and the second spring 412 are reset. The circular plate 49, the second filter screen 410 and the fine needle 411 move downward under the resetting action of the telescopic lead screw 41, and the multi-stage telescopic rod 48 contracts. When the circular plate 49 moves downward, the first wedge block 46 is driven to move downward by the pull rope 47, and the first spring 43 is reset. The moving plate 44 and the slide rod 42 move to the right side to complete the reset under the resetting action of the first spring 43. At this time, the right side of the slide rod 42 is again in contact with the telescopic lead screw 41. During the grinding process, the gear set 33 rotates to repeatedly perform the above steps, so that the fine needle 411 continuously moves up and down to dredge the first filter screen 2, and the second filter screen 410 continuously moves up and down to sieve the cosmetic powder twice, thereby improving the sieving efficiency. After the grinding and sieving are completed, the switch of the motor 31 is turned off. At this time, the cosmetic powder and impurities can be taken out for treatment.

[0039] Example 2

[0040] On the basis of Example 1, as Figures 7-8As shown, the device also comprises a collecting mechanism 5 for collecting impurities, which comprises a collecting frame 51, a collecting net 52 and a buckle 53. The collecting frame 51 is slidingly connected to the rotating brush plate 36. The upper side of the collecting frame 51 is connected to the buckle 53. The buckle 53 is internally provided with a groove. The rear side of the collecting frame 51 is connected to the collecting net 52. The collecting net 52 is used for collecting impurities on the first filter screen.

[0041] When the rotating brush plate 36 rotates, the collecting frame 51 and the collecting net 52 rotate. When the collecting frame 51 and the collecting net 52 rotate, they are in contact with the first filter screen 2. At this time, the impurities that cannot be ground on the first filter screen 2 enter the interior of the collecting net 52, thereby completing the collection of impurities. After the grinding and sieving are completed, the rotating brush plate 36 no longer rotates. At this time, the groove of the buckle 53 can be hooked by a hook. The buckle 53 is taken out upward. When the buckle 53 moves upward, the collecting frame 51 and the collecting net 52 move upward. At this time, the filtered impurities can be treated. After the treatment is completed, the collecting frame 51, the collecting net 52 and the buckle 53 are reloaded into the sieving machine 1.

[0042] As shown in Figures 8-10 The device also comprises an impact mechanism 6 for impacting the collecting net 52. The impact mechanism 6 comprises an inclined arc block 61, a sliding plate 62, sharp columns 63 and a ball block 64. The sliding plate 62 is slidingly connected to the rear side of the collecting frame 51. The lower side of the sliding plate 62 is uniformly connected to five sharp columns 63. The outer side of the sliding plate 62 is connected to the ball block 64. The right side inside the sieving machine 1 is connected to the inclined arc block 61. The ball block 64 is in contact with the inclined arc block 61.

[0043] When the collecting frame 51 rotates, the sliding plate 62, the sharp columns 63 and the ball block 64 rotate. When the ball block 64 is in contact with the inclined arc block 61, the ball block 64 rotates upward. When the ball block 64 moves upward, the sharp columns 63 and the sliding plate 62 move upward. When the ball block 64 moves away from the inclined arc block 61, the sliding plate 62, the sharp columns 63 and the ball block 64 move downward under the action of gravity to complete resetting. During the rotation of the collecting frame 51, the ball block 64 continuously contacts and moves away from the inclined arc block 61 to drive the sharp columns 63 to continuously move upward and downward to impact the collecting net 52. This makes the cosmetic powder in the collecting net 52 fall, thereby improving the filtering efficiency and preventing the cosmetic powder from being left in the collecting net 52.

[0044] As shown in Figures 11-12 The device also comprises a scraping mechanism 7 for scraping raw materials on the inner wall of the sieving machine 1. The scraping mechanism 7 comprises second wedge blocks 71, third springs 72 and fixed blocks 73. The fixed blocks 73 are connected to the upper side of the rotating brush plate 36. There are three fixed blocks 73. The second wedge blocks 71 are slidingly connected to the outer side of the fixed blocks 73. The second wedge blocks 71 are in contact with the sieving machine 1. Two third springs 72 are sleeved on each second wedge block 71. One end of the third spring 72 is connected to the second wedge block 71. The other end of the third spring 72 is connected to the fixed block 73.

[0045] When the rotating brush plate 36 rotates, the second wedge block 71, the third spring 72 and the fixed block 73 are driven to rotate, and the second wedge block 71 is always in contact with the inner wall of the sifter 1 under the action of the third spring 72. The second wedge block 71 removes the cosmetic powder accumulated on the inner wall of the sifter 1 during rotation, preventing the inner wall from being left with cosmetic powder that affects the efficiency of sifting.

[0046] As shown in Figure 13 The opening mechanism 8 is used to take out the cosmetic powder, and the opening mechanism 8 comprises a baffle 81, a fourth spring 82 and a second fixed plate 83. The second fixed plate 83 is connected to the lower right side of the sifter 1, the baffle 81 is slidably connected to the left side of the second fixed plate 83, the fourth spring 82 is sleeved on the right side of the baffle 81, one end of the fourth spring 82 is connected to the baffle 81, and the other end of the fourth spring 82 is connected to the second fixed plate 83.

[0047] When a certain amount of cosmetic powder is accumulated in the sifter 1, the baffle 81 is pulled to the right, and the fourth spring 82 is compressed. At this time, the staff can take out the cosmetic powder in the sifter 1, preventing too much cosmetic powder from accumulating at the bottom of the sifter 1. After taking out, the baffle 81 is released, the fourth spring 82 is reset, and the baffle 81 moves to the left under the resetting action of the fourth spring 82 to shield the sifter 1 again, thereby preventing the cosmetic powder from escaping.

[0048] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A sieving apparatus for the production of powdered cosmetics, characterized in that, The application relates to a screening machine, which comprises a screening machine (1), a first filter screen (2), a brush grinding mechanism (3) and a dredging mechanism (4), wherein the screening machine (1) is arranged on the ground, the upper side of the screening machine (1) is provided with a feeding port, the inside of the screening machine (1) is connected with the first filter screen (2) for filtering impurities in raw materials, the inside of the screening machine (1) is provided with the brush grinding mechanism (3) for grinding block-shaped raw materials, and the inside of the screening machine (1) is provided with the dredging mechanism (4) for dredging the first filter screen (2). The brush grinding mechanism (3) comprises a motor (31), a first fixed plate (32), a gear set (33), a fixed rod (34), a bearing (35) and a rotating brush plate (36), the left side of the inside of the screening machine (1) is connected with the first fixed plate (32), the first fixed plate (32) is connected with the motor (31), the right side of the first fixed plate (32) is connected with the bearing (35), the inner ring of the bearing (35) is connected with the fixed rod (34), the output shaft of the motor (31) and the fixed rod (34) are connected with the gear set (33), the fixed rod (34) is connected with the rotating brush plate (36) for grinding block-shaped raw materials, the rotating brush plate (36) is located on the lower side of the fixed rod (34), and the rotating brush plate (36) is in contact with the first filter screen (2). The dredging mechanism (4) comprises a telescopic screw rod (41), a sliding rod (42), a first spring (43), a moving plate (44), a fixed frame (45), a first wedge block (46), a pull rope (47), a multi-stage telescopic rod (48), a circular plate (49), a second filter screen (410), a fine needle (411) and a second spring (412), the inside of the screening machine (1) is connected with the telescopic screw rod (41), the telescopic screw rod (41) is located on the right inner side of the gear set (33), the lower side of the right part of the gear set (33) is slidingly connected with the sliding rod (42), the right side of the sliding rod (42) is in contact with the telescopic screw rod (41), the left side of the sliding rod (42) is connected with the moving plate (44), the sliding rod (42) is sleeved with the first spring (43), the two ends of the first spring (43) are connected with the moving plate (44) and the gear set (33) respectively, the lower side of the gear set (33) is connected with the fixed frame (45), the lower side of the fixed frame (45) is slidingly connected with the first wedge block (46), the upper side of the rotating brush plate (36) is connected with the multi-stage telescopic rod (48), the multi-stage telescopic rod (48) is connected with the circular plate (49), the circular plate (49) is rotationally connected with the telescopic screw rod (41), the circular plate (49) and the first wedge block (46) are connected with the pull rope (47), the lower part of the telescopic screw rod (41) is connected with the second filter screen (410), the second filter screen (410) is slidingly connected with the screening machine (1), the lower side of the telescopic screw rod (41) is sleeved with the second spring (412), the two ends of the second spring (412) are connected with the screening machine (1) and the second filter screen (410) respectively, and the upper side of the second filter screen (410) is uniformly connected with the fine needles (411) for dredging the first filter screen (2).

2. The sieving apparatus for producing a powder cosmetic according to claim 1, wherein The collecting mechanism (5) for collecting impurities comprises a collecting frame (51), a collecting net (52) and a buckle (53), the collecting frame (51) is slidably connected to the rotating brush plate (36), the collecting net (52) is connected to the rear side of the collecting frame (51), and the buckle (53) is connected to the upper side of the collecting frame (51).

3. The sieving apparatus for producing a powder cosmetic according to claim 2, wherein The buckle (53) is internally provided with a groove.

4. The sieving apparatus for producing a powder cosmetic according to claim 3, wherein The impact mechanism (6) for impacting the collecting net (52) comprises an inclined arc block (61), a sliding plate (62), a sharp column (63) and a ball block (64), the inclined arc block (61) is connected to the right side of the inside of the sifter (1), the sliding plate (62) is slidably connected to the rear side of the collecting frame (51), the sharp columns (63) are uniformly connected to the lower side of the sliding plate (62), the ball block (64) is connected to the outer side of the sliding plate (62), and the ball block (64) is in contact with the inclined arc block (61).

5. The sieving apparatus for producing a powder cosmetic according to claim 4, wherein The scraping mechanism (7) for scraping the raw materials on the inner wall of the sifter (1) comprises a second wedge block (71), a third spring (72) and a fixed block (73), the fixed block (73) is connected to the upper side of the rotating brush plate (36), the second wedge blocks (71) are slidably connected to the outer side of the fixed block (73), the second wedge blocks (71) are in contact with the sifter (1), the third springs (72) are sleeved on the second wedge blocks (71), and two ends of the third spring (72) are connected to the second wedge block (71) and the fixed block (73) respectively.

6. The sieving apparatus for producing a powder cosmetic according to claim 5, wherein The opening mechanism (8) for taking out the cosmetic powder comprises a baffle (81), a fourth spring (82) and a second fixed plate (83), the second fixed plate (83) is connected to the right side of the lower part of the sifter (1), the baffle (81) is slidably connected to the upper side of the second fixed plate (83), the fourth spring (82) is sleeved to the right side of the baffle (81), and two ends of the fourth spring (82) are connected to the baffle (81) and the second fixed plate (83) respectively.

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