Multi-particle-size microsphere screening device and screening method thereof

Abstract

According to the multi-particle-size microsphere screening device and the screening method thereof, particles needing to be screened are put into a first screening assembly, and then a water circulation assembly is started to impact the particles of the first screening assembly so that screening of the particles can be achieved. The adhesion removing assembly is started to separate part of attached particles in the first screening assembly so as to further improve the screening yield, then the drying assembly is used for drying the particles screened out in the first screening assembly and within the target size range, then the charge attaching assembly is started to spray electrolyte aerial fog to the dried particles, and the charge attaching assembly is started to spray electrolyte aerial fog to the dried particles. Therefore, the particles are provided with uniform charges. And then the second screening assembly is vacuumized through the vacuum pump. And then the second screening assembly is started to screen the particles again through the acting force between the charges on the particles and the magnetic field, so that further precise screening is completed.

Description

Technical Field

[0001] The present application relates to the technical field of multi-size microsphere screening, and in particular to a multi-size microsphere screening device and a screening method thereof. Background Art

[0002] In the field of medical aesthetic filling, injectable microspheres (such as polylactic acid microspheres, hydroxyapatite microspheres, polycaprolactone microspheres, etc.) are widely used in soft tissue filling, facial shaping and skin rejuvenation treatments.

[0003] Ideal microspheres should have good biocompatibility, an appropriate degradation rate, and be able to stimulate collagen regeneration to achieve a long-lasting filling effect. However, the particle size distribution of microspheres has a significant impact on therapeutic efficacy and safety. Microspheres with excessively large particle sizes (e.g., >100 μm) may cause foreign body granulomas, local inflammation, or nodule formation, and may also lead to uneven filling sites. Microspheres with excessively small particle sizes (e.g., <20 μm) are easily phagocytosed by macrophages and fail to provide sufficient support, resulting in a short-lived filling effect. Extremely small microspheres (e.g., <10 μm) may enter blood vessels and induce serious adverse reactions such as vascular embolism.

[0004] At present, due to the limitations of microsphere preparation methods and industrial production capacity, it is impossible to screen microspheres more finely, and thus it is impossible to meet different medical aesthetic filling needs (such as shallow fine part modification, middle layer reinforcement filling of contour depressions, deep filling of bone shaping and support, etc.). Summary of the Invention

[0005] Based on this, it is necessary to provide a multi-size microsphere screening device and its screening method to address the problem that traditional microsphere preparation methods and industrial production capacity are limited, which makes it impossible to screen microspheres more finely and thus cannot meet different medical and aesthetic filling needs.

[0006] The present application provides a multi-size microsphere screening device, comprising:

[0007] A first screening component is hollow inside and is used for screening particles to obtain particles within a target size range;

[0008] a water circulation assembly fixedly disposed on the first screening assembly, the water circulation assembly being in communication with the first screening assembly, and being used to impact particles in the first screening assembly;

[0009] a de-adhesion component, disposed on one side of the first screening component, the de-adhesion component being in communication with the first screening component, and being used to remove particles adhering to the first screening component;

[0010] a drying assembly, disposed at the bottom of the first screening assembly, the drying assembly being in communication with the first screening assembly, and being used to dry particles within a target size range dropped by the first screening assembly;

[0011] A charge attachment component is fixedly arranged on the drying component, and is used to attach charges to the dried particles in the drying component;

[0012] a second screening assembly, disposed at the bottom of the charge adhesion assembly, the second screening assembly being in communication with the charge adhesion assembly, and configured to further perform multi-stage screening on particles falling from the charge adhesion assembly;

[0013] The vacuum pump is fixedly arranged on the second screening component, and is used for drawing the interior of the second screening component into a vacuum state.

[0014] Furthermore, the first screening component includes:

[0015] a first screening pipe, the interior of which is hollow, and one end of which is fixedly connected to the de-adhesion component;

[0016] a first sealing member, provided at a connection between the first screening pipe and the de-adhesion assembly, the first sealing member being used to isolate the first screening pipe from the de-adhesion assembly;

[0017] a first filter element disposed inside the first screening pipe, the first filter element being disposed on a side of the first sealing element away from the de-adhesion assembly, the first filter element, the first sealing element, and the first screening pipe forming a first screening space;

[0018] a second filter element disposed inside the first screening pipe, the second filter element having the same structure as the first filter element, and disposed on a side of the first filter element away from the first sealing element, the first filter element, the second filter element, and the first screening pipe forming a second screening space;

[0019] The first closing member is arranged on a side of the second filter member away from the first filter member. The first closing member is fixedly connected to the first screening pipe. The first closing member, the second filter member and the first screening pipe form a third screening space.

[0020] Furthermore, the first sealing member includes:

[0021] a first sealing plate, disposed at a connection between the first screening pipe and the de-adhesion assembly, the first sealing plate being slidably connected to the first screening pipe, and the first sealing plate sealing the first screening pipe;

[0022] a first support rod, slidably disposed on the first screening pipe, the first support rod being fixedly connected to the first sealing plate;

[0023] The first fastening nut is sleeved on the first support rod, the first fastening nut is threadedly connected to the first support rod, and the first fastening nut abuts against the first screening pipe.

[0024] Furthermore, the first filter element includes:

[0025] a first screen, fixedly disposed inside the first screening pipe, and having a plurality of first screen holes;

[0026] a second screen, slidably disposed on the first screen, wherein a plurality of second screen holes are formed on the second screen, and each second screen hole corresponds to one of the first screen holes;

[0027] a first threaded rod, disposed on the first screening pipe, the first threaded rod being threadedly connected to the first screening pipe, and the first threaded rod being rotatably connected to the second screen;

[0028] a first support shaft rotatably disposed in the middle of the first screen;

[0029] a first stripping plate, disposed on one side of the first screen, the first stripping plate abutting against the first screen;

[0030] The first spur plate is arranged on the other side of the first screen, the first spur plate is slidably connected to the first screening pipe, and the first spur plate is gear-coupled with the first support shaft.

[0031] Furthermore, the water circulation component includes:

[0032] A first circulation pipeline is arranged in a U shape, the first circulation pipeline is arranged on the top of the first screening pipeline, and both ends of the first circulation pipeline are connected to the first screening space;

[0033] The second circulation pipeline is arranged in a U shape. The second circulation pipeline is arranged on the top of the first screening pipeline. Both ends of the second circulation pipeline are connected to the second screening space.

[0034] Furthermore, the de-adhesion component includes:

[0035] a first connecting pipe, arranged to be inclined, the first connecting pipe being arranged on a side close to the first sealing plate, one end of the first connecting pipe being in communication with the first screening pipe;

[0036] a first blower, disposed at the bottom of the first filter element, the first blower being in communication with the first screening pipe;

[0037] a first heating element, fixedly disposed at the other end of the first connecting tube;

[0038] The ultrasonic vibrator is fixedly mounted on the first connecting tube.

[0039] Furthermore, the drying component includes:

[0040] a first drying pipe having a hollow interior, the first drying pipe being arranged at the bottom of the first screening pipe, and the first drying pipe being in communication with the second screening space;

[0041] a first switch, disposed at the connection between the first drying pipe and the first screening pipe, the first switch being used to close or open an opening of the first drying pipe;

[0042] a second switch, disposed inside the first drying duct, the second switch being used to close or open another opening of the first drying duct;

[0043] a second blower, fixedly mounted on the first drying duct, the second blower being in communication with the first drying duct;

[0044] The charge attachment component is fixedly arranged on the first drying pipe.

[0045] Furthermore, the second screening assembly includes:

[0046] a second screening pipe, disposed at the bottom of the first drying pipe, the second screening pipe being in communication with the first drying pipe;

[0047] a first magnetic field generator, fixedly disposed at one end of the second screening pipe;

[0048] The collector is provided in plurality, and the plurality of collectors are fixedly provided at the bottom of the second screening pipe, and the plurality of collectors are equidistantly arranged along the length extension direction of the second screening pipe;

[0049] The vacuum pump is fixedly arranged on the second screening pipe, and the vacuum pump is communicated with the interior of the second screening pipe.

[0050] Furthermore, the multi-size microsphere screening device further includes a feeding port, which is arranged at the top of the first screening pipe and is communicated with the first screening space.

[0051] The present application provides a multi-size microsphere screening method, which is applied to the multi-size microsphere screening device described above, and is characterized in that the multi-size microsphere screening method includes:

[0052] S001, first activate the first sealing element to seal the connection between the first screening pipe and the de-adhesion assembly, then activate the first filter element and the second filter element to connect the first screening space, the second screening space, and the third screening space, and feed the particles to be screened into the first screening space through the feeding port;

[0053] S002, injecting water into the first screening space through the first circulation pipeline, so that the water impacts the particles in the first screening space, causing the particles to impact the first filter element, thereby causing some of the particles to pass through the first filter element and enter the second screening space;

[0054] S003, when the water in the first screening space flows into the second screening space, the water impacts the particles in the second screening space, causing the particles to impact the second filter element, and then causing some particles to pass through the second filter element and enter the third screening space;

[0055] S004, by pushing and pulling the first straight tooth plate back and forth to drive the first stripping plate to clean the particles stuck on the first screen, and similarly, the second filter element can also be cleaned;

[0056] S005, rotating the first threaded rod to drive the second screen to move relative to the first screen, thereby closing all the first screen holes on the first screen, and similarly activating the second filter element to close the first screening pipe;

[0057] S006, introducing water into the second screening space through the second circulation pipeline to impact the particles in the second screening space so that the particles in the second screening space are evenly distributed;

[0058] S007, rotating the first threaded rod to drive the second screen to move relative to the first screen, thereby opening all the first screen holes on the first screen, and similarly activating the second filter element to open the second filter element;

[0059] S008, repeat steps S001 to S007 three times;

[0060] S009, starting the first blower, the first heating element, and the first sealing element so that the particles in the first screening space are blown back and forth toward the first heating element, thereby separating the adhering particles;

[0061] S010, turning off the first blower and the first heating element, starting the ultrasonic vibrator to return the particles to the first screening space, and then closing the first sealing element;

[0062] S011, execute step S002;

[0063] S012, activating the first switch to allow the particles in the second screening space to fall into the first drying duct, and activating the second blower to dry the particles in the first drying duct;

[0064] S013, starting the first switch again to close the first drying duct;

[0065] S014, starting the charge attachment component to spray charged electrolyte mist onto the dried particles in the first drying pipe;

[0066] S015, starting the first magnetic field generator and the vacuum pump;

[0067] S016, starting the second switch to allow the particles in the first drying pipe to fall into different collectors.

[0068] The present application relates to a multi-particle size microsphere screening device and a screening method thereof, wherein the particles to be screened are put into a first screening component, and then the water circulation component is started to impact the particles of the first screening component to achieve screening of the particles. The de-adhesion component is started to separate some of the attached particles in the first screening component to further improve the screening yield, and then the drying component is used to dry the particles in the target size range screened out from the first screening component, and then the charge attachment component is started to spray the dried particles with electrolyte mist so that the particles have a uniform charge. The second screening component is then evacuated to a vacuum state by a vacuum pump. The second screening component is then started to screen the particles again using the force between the charge on the particles and the magnetic field to complete further precise screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] Figure 1 This is a schematic structural diagram of a multi-size microsphere screening device provided in one embodiment of the present application.

[0070] Figure 2 Schematic diagram of the positional relationship between the first fastening nut and the first support rod in the multi-size microsphere screening device provided in one embodiment of the present application.

[0071] Figure 3 This is a schematic diagram of the positional relationship between the first circulation pipeline and the second circulation pipeline in the multi-size microsphere screening device provided in one embodiment of the present application.

[0072] Figure 4 Schematic diagram of the positional relationship between the first switch and the second switch in the multi-size microsphere screening device provided in one embodiment of the present application.

[0073] Figure 5 This is a schematic diagram of the positional relationship between the second screening pipe and the first magnetic field generator in the multi-size microsphere screening device provided in one embodiment of the present application.

[0074] Figure 6 Schematic diagram of the positional relationship between the first screen and the second screen in the multi-size microsphere screening device provided in one embodiment of the present application.

[0075] Figure 7 Schematic diagram of the positional relationship between the first support shaft and the first spur plate in the multi-size microsphere screening device provided in one embodiment of the present application.

[0076] Reference numerals:

[0077] 11. First screening assembly; 111. First screening pipe; 112. First sealing member; 112a. First sealing plate; 112b. First support rod; 112c. First fastening nut; 113. First filter element; 113a. First screen; 113b. Second screen; 113c. First threaded rod; 113d. First support shaft; 113e. First stripping plate; 113f. First spur plate; 114. Second filter element; 115. First closing member; 115a. Closing plate; 115b. Drain pipe; 12. Water circulation assembly; 121. First circulation pipeline; 122. Second circulation pipeline. 13. De-adhesion component; 131. First connecting pipe; 132. First blower; 133. First heating element; 134. Ultrasonic vibrator; 14. Drying component; 141. First drying pipe; 142. First switch; 143. Second switch; 144. Second blower; 15. Charge attachment component; 16. Second screening component; 161. Second screening pipe; 162. First magnetic field generator; 163. Collector; 17. Vacuum pump; 18. First screening space; 19. Second screening space; 20. Third screening space; 21. Feeding port; 22. First sieve hole; 23. Second sieve hole. DETAILED DESCRIPTION

[0078] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0079] like Figures 1 to 2 As shown, in one embodiment of the present application, the multi-size microsphere screening device includes: a first screening component 11, a water circulation component 12, a de-adhesion component 13, a drying component 14, a charge attachment component 15, a second screening component 16 and a vacuum pump 17.

[0080] The interior of the first screening component 11 is hollow. The first screening component 11 is used to screen particles and obtain particles within a target size range.

[0081] The water circulation component 12 is fixedly disposed on the first screening component 11 . The water circulation component 12 is communicated with the first screening component 11 . The water circulation component 12 is used to impact particles in the first screening component 11 .

[0082] The de-adhesion component 13 is disposed on one side of the first screening component 11 . The de-adhesion component 13 is in communication with the first screening component 11 . The de-adhesion component 13 is used to remove particles adhered to the first screening component 11 .

[0083] The drying component 14 is disposed at the bottom of the first screening component 11 . The drying component 14 is in communication with the first screening component 11 . The drying component 14 is used to dry particles within a target size range that fall from the first screening component 11 .

[0084] The charge attachment component 15 is fixedly disposed on the drying component 14 , and is used to attach charges to the particles dried in the drying component 14 .

[0085] The second screening component 16 is disposed at the bottom of the charge adhesion component 15 . The second screening component 16 is in communication with the charge adhesion component 15 . The second screening component 16 is used to perform further multi-stage screening on particles falling from the charge adhesion component 15 .

[0086] The vacuum pump 17 is fixedly mounted on the second screening assembly 16 , and is used to evacuate the interior of the second screening assembly 16 into a vacuum state.

[0087] Specifically, the charge attachment component 15 is an electrolyte aerosol or active agent aerosol spray bottle, which will not be described in detail here.

[0088] In this embodiment, the particles to be screened are placed into the first screening component 11, and then the water circulation component 12 is started to impact the particles in the first screening component 11 to achieve particle screening. The de-adhesion component 13 is started to separate some of the attached particles in the first screening component 11 to further improve the screening yield. The drying component 14 is then used to dry the particles in the target size range screened out from the first screening component 11, and then the charge attachment component 15 is started to spray electrolyte mist on the dried particles so that the particles have a uniform charge. The second screening component 16 is then evacuated to a vacuum state by the vacuum pump 17. The second screening component 16 is then started to screen the particles again using the force between the charge on the particles and the magnetic field to complete further precise screening.

[0089] like Figures 3 to 6As shown, in one embodiment of the present application, the first screening assembly 11 includes: a first screening pipe 111 , a first sealing member 112 , a first filter member 113 , a second filter member 114 and a first closing member 115 .

[0090] The interior of the first screening pipe 111 is configured to be hollow, and one end of the first screening pipe 111 is fixedly connected to the de-adhesion component 13 .

[0091] The first sealing member 112 is disposed at the connection between the first screening pipe 111 and the de-adhesion assembly 13 . The first sealing member 112 is used to isolate the first screening pipe 111 from the de-adhesion assembly 13 .

[0092] The first filter element 113 is arranged inside the first screening pipe 111. The first filter element 113 is arranged on the side of the first sealing element 112 away from the de-adhesion component 13. The first filter element 113, the first sealing element 112 and the first screening pipe 111 enclose a first screening space 18.

[0093] The second filter element 114 is arranged inside the first screening pipe 111. The structure of the second filter element 114 is the same as that of the first filter element 113. The second filter element 114 is arranged on the side of the first filter element 113 away from the first sealing element 112. The first filter element 113, the second filter element 114 and the first screening pipe 111 form a second screening space 19.

[0094] The first closing member 115 is arranged on a side of the second filter member 114 away from the first filter member 113 . The first closing member 115 is fixedly connected to the first screening pipe 111 . The first closing member 115 , the second filter member 114 and the first screening pipe 111 form a third screening space 20 .

[0095] Specifically, the multi-size microsphere screening device further includes a feeding port 21 , which is disposed at the top of the first screening pipe 111 , and is communicated with the first screening space 18 .

[0096] The sieve aperture of the first filter element 113 is D, and the sieve aperture of the second filter element 114 is d, and D is larger than d. Therefore, after the overall sieve is completed, the particle size distribution of the particles in the second sieve space 19 is between D and d.

[0097] The first closing member 115 includes a closing plate 115 a and a drain pipe 115 b . The closing plate 115 a is fixedly connected to the first screening pipe 111 by bolts, and the drain pipe 115 b passes through the closing plate 115 a and communicates with the interior of the first screening pipe 111 .

[0098] In this embodiment, the particles are graded and filtered by the first filter element 113 and the second filter element 114 so that the size difference of the particles finally filtered into the second screening space 19 is extremely small.

[0099] like Figures 2 to 3 As shown, in one embodiment of the present application, the first sealing member 112 includes: a first sealing plate 112a, a first support rod 112b and a first fastening nut 112c.

[0100] The first sealing plate 112 a is disposed at the connection between the first screening pipe 111 and the de-adhesion assembly 13 . The first sealing plate 112 a is slidably connected to the first screening pipe 111 , and the first sealing plate 112 a seals the first screening pipe 111 .

[0101] The first support rod 112 b is slidably disposed on the first screening pipe 111 , and the first support rod 112 b is fixedly connected to the first sealing plate 112 a .

[0102] The first fastening nut 112 c is sleeved on the first support rod 112 b , the first fastening nut 112 c is threadedly connected to the first support rod 112 b , and the first fastening nut 112 c abuts against the first screening pipe 111 .

[0103] In this embodiment, the first fastening nut 112 c is rotated to move the first fastening nut 112 c on the first support rod 112 b , thereby facilitating control of sliding of the first support rod 112 b and the first sealing plate 112 a on the first screening pipe 111 .

[0104] like Figures 6 to 7 As shown, in one embodiment of the present application, the first filter element 113 includes: a first screen 113a, a second screen 113b, a first threaded rod 113c, a first support shaft 113d, a first stripping plate 113e and a first spur plate 113f.

[0105] The first screen 113 a is fixedly disposed inside the first screening pipe 111 , and a plurality of first screen holes 22 are defined on the first screen 113 a .

[0106] The second screen 113 b is slidably disposed on the first screen 113 a . The second screen 113 b is provided with a plurality of second screen holes 23 . Each second screen hole 23 corresponds to one of the first screen holes 22 .

[0107] The first threaded rod 113 c is disposed on the first screening pipe 111 , the first threaded rod 113 c is threadedly connected to the first screening pipe 111 , and the first threaded rod 113 c is rotatably connected to the second screen 113 b .

[0108] The first support shaft 113d is rotatably disposed in the middle of the first screen 113a.

[0109] The first peeling plate 113e is disposed on one side of the first screen 113a, and the first peeling plate 113e is in contact with the first screen 113a.

[0110] The first spur plate 113f is disposed on the other side of the first screen 113a. The first spur plate 113f is slidably connected to the first screening pipe 111. The first spur plate 113f is gear-coupled with the first support shaft 113d.

[0111] In this embodiment, the first threaded rod 113c is rotated to control the depth of the first threaded rod 113c inserted into the first screening pipe 111. At the same time, the first threaded rod 113c drives the second screen 113b to move relative to the first screen 113a to control the opening or closing of the entire first filter element 113.

[0112] By pushing and pulling the first spur plate 113f, the gear transmission between the first spur plate 113f and the first support shaft 113d is used to drive the first support shaft 113d and the first stripping plate 113e to rotate, so as to clean the particles stuck on the first screen 113a.

[0113] like Figures 3 to 4 As shown, in one embodiment of the present application, the water circulation component 12 includes a first circulation pipeline 121 and a second circulation pipeline 122 .

[0114] The first circulation pipeline 121 is configured to be U-shaped. The first circulation pipeline 121 is disposed at the top of the first screening pipe 111 . Both ends of the first circulation pipeline 121 are connected to the first screening space 18 .

[0115] The second circulation pipeline 122 is configured to be U-shaped. The second circulation pipeline 122 is disposed at the top of the first screening pipe 111 . Both ends of the second circulation pipeline 122 are connected to the second screening space 19 .

[0116] In this embodiment, water is supplied to the first screening space 18 through the first circulation pipeline 121 , and water is supplied to the second screening space 19 through the second circulation pipeline 122 .

[0117] like Figure 4As shown, in one embodiment of the present application, the de-adhesion assembly 13 includes: a first connecting pipe 131 , a first blower 132 , a first heating element 133 and an ultrasonic vibrator 134 .

[0118] The first connecting pipe 131 is arranged to be inclined. The first connecting pipe 131 is arranged on a side close to the first sealing plate 112 a . One end of the first connecting pipe 131 is connected to the first screening pipe 111 .

[0119] The first blower 132 is disposed at the bottom of the first filter element 113 , and the first blower 132 is in communication with the first screening pipe 111 .

[0120] The first heating element 133 is fixedly disposed at the other end of the first connecting tube 131 .

[0121] The ultrasonic vibrator 134 is fixed on the first connecting pipe 131 .

[0122] Specifically, the first heating element 133 is an electric heating rod, which will not be described in detail here.

[0123] A plurality of ventilation holes are defined on the top of the first connecting pipe 131 .

[0124] In this embodiment, the first heating element 133 and the first blower 132 are started to dry the particles in the first screening space 18 so that the particles adhering together can be separated. The first heating element 133 and the first blower 132 are stopped after running for a period of time, and then the ultrasonic vibrator 134 is started to make the particles in the first connecting pipe 131 fall into the first screening space 18. At the same time, the ultrasonic vibrator 134 can further help separate the particles adhering together.

[0125] like Figures 4 to 5 As shown, in one embodiment of the present application, the drying component 14 includes: a first drying pipe 141 , a first switch 142 , a second switch 143 and a second blower 144 .

[0126] The interior of the first drying pipe 141 is hollow. The first drying pipe 141 is disposed at the bottom of the first screening pipe 111 . The first drying pipe 141 is communicated with the second screening space 19 .

[0127] The first switch 142 is disposed at the connection between the first drying pipe 141 and the first screening pipe 111 . The first switch 142 is used to close or open an opening of the first drying pipe 141 .

[0128] The second switch 143 is disposed inside the first drying duct 141 , and is used to close or open the other opening of the first drying duct 141 .

[0129] The second blower 144 is fixedly mounted on the first drying duct 141 , and the second blower 144 is in communication with the first drying duct 141 .

[0130] The charge attachment component 15 is fixedly disposed on the first drying pipe 141 .

[0131] The second screening assembly 16 includes a second screening pipe 161 , a first magnetic field generator 162 and a plurality of collectors 163 .

[0132] The second screening pipe 161 is disposed at the bottom of the first drying pipe 141 , and the second screening pipe 161 is communicated with the first drying pipe 141 .

[0133] The first magnetic field generator 162 is fixedly disposed at one end of the second screening pipe 161 .

[0134] The collectors 163 are provided in plurality, and the plurality of collectors 163 are all fixedly disposed at the bottom of the second screening pipe 161 , and the plurality of collectors 163 are equidistantly arranged along the length extension direction of the second screening pipe 161 .

[0135] The vacuum pump 17 is fixedly mounted on the second screening pipe 161 , and the vacuum pump 17 is in communication with the interior of the second screening pipe 161 .

[0136] Specifically, the structure of the first switch 142 is the same as that of the second switch 143. The first switch 142 includes a first rotating plate and a first electric push rod. The first rotating plate is rotatably disposed inside the first drying duct 141 to seal the first drying duct 141.

[0137] The first electric push rod is disposed inside the first drying pipe 141 , one end of the first electric push rod is rotatably connected to the first rotating plate, and the other end of the first electric push rod is rotatably connected to the first drying pipe.

[0138] In this embodiment, the first switch 142 is activated to allow the particles of relatively uniform size in the second screening space 19 to fall into the first drying duct 141, and then the second blower 144 is activated to dry the particles in the first drying duct 141, and then the first switch 142 is activated again to close the first drying duct 141.

[0139] The charge adhering assembly 15 is activated to allow the particles in the first drying duct 141 to be uniformly charged.

[0140] Then, start the vacuum pump 17 to evacuate the second screening pipe 161 and the first drying pipe 141, then start the first magnetic field generator 162, and finally start the second switch 143 to allow the particles in the first drying pipe 141 to fall evenly. Under the action of the magnetic field generated by the first magnetic field generator 162, the particles in the first drying pipe 141 are screened again into different collectors 163.

[0141] Specifically, the density of each particle is considered equal, and each particle is considered to be approximately spherical.

[0142] When the particles in the first drying pipe 141 enter the second vacuum screening pipe 161, the force analysis of the particles is as follows:

[0143] ;

[0144] Among them, a is the vertical downward acceleration of the particle; F is the gravity acting on the particle; m is the mass of the particle; g is the acceleration due to gravity; therefore, the acceleration of particles of different sizes is equal to g; the time for each particle from entering the vacuum second screening pipe 161 to landing is equal, which is t.

[0145] The horizontal acceleration of the particle is:

[0146]

[0147] Where F2 is the electric field force on the particle; m is the mass of the particle; the electric field force is proportional to the charge intensity, and the charge intensity is proportional to the surface area of ​​the particle, so the formula can be derived:

[0148]

[0149] Where r is the radius of the particle and the mass formula of the particle is:

[0150]

[0151] in, is the density of the particles. Particles of the same material have the same density. Therefore, the acceleration of the particles in the horizontal direction is:

[0152]

[0153] Among them, A is a constant, that is, the particle acceleration in the horizontal direction is proportional to the inverse of the particle size. The formula for calculating the horizontal movement distance of the microsphere is:

[0154] L=(1 / 2)*a*t^2

[0155] The distance a particle moves horizontally is proportional to the inverse of its size. The larger the particle radius, the closer the particle lands to the first magnetic field generator 162. The smaller the microsphere radius, the farther it lands from the first magnetic field generator 162. The precise size of the particles at different positions within the electric field can then be calculated, enabling further precise size separation of the particles.

[0156] In one embodiment of the present application, the present application further provides a multi-size microsphere screening method, which is applied to the multi-size microsphere screening device described above, and is characterized in that the multi-size microsphere screening method includes:

[0157] S001, first start the first sealing element 112 to seal the connection between the first screening pipe 111 and the de-adhesion component 13, then start the first filter element 113 and the second filter element 114 to connect the first screening space 18, the second screening space 19 and the third screening space 20, and feed the particles to be screened into the first screening space 18 through the feeding port 21.

[0158] S002, injecting water into the first screening space 18 through the first circulation pipeline 121, so that the water flow impacts the particles in the first screening space 18, causing the particles to impact the first filter element 113, and then allowing some particles to pass through the first filter element 113 into the second screening space 19.

[0159] S003, when the water flow in the first screening space 18 flows into the second screening space 19, the water flow impacts the particles in the second screening space 19, causing the particles to impact the second filter element 114, and then some of the particles pass through the second filter element 114 into the third screening space 20.

[0160] S004, the first spur plate 113f is pushed and pulled back and forth to drive the first stripping plate 113e to clean the particles stuck on the first screen 113a. Similarly, the second filter element 114 can also be cleaned.

[0161] S005 , rotating the first threaded rod 113 c to drive the second screen 113 b to move relative to the first screen 113 a , thereby closing all the first screen holes 22 on the first screen 113 a , and similarly starting the second filter element 114 to close the first screening pipe 111 .

[0162] S006 , introducing water into the second screening space 19 through the second circulation pipeline 122 to impact the particles in the second screening space 19 so that the particles in the second screening space 19 are evenly distributed.

[0163] S007, rotating the first threaded rod 113c to drive the second screen 113b to move relative to the first screen 113a, thereby opening all the first screen holes 22 on the first screen 113a, and similarly starting the second filter element 114 to open the second filter element 114.

[0164] S008, repeat steps S001 to S007 three times.

[0165] S009 , starting the first blower 132 , the first heating element 133 and the first sealing element 112 so that the particles in the first screening space 18 are blown back and forth toward the first heating element 133 , thereby separating the adhering particles.

[0166] S010 , turning off the first blower 132 and the first heating element 133 , starting the ultrasonic vibrator 134 to return the particles to the first screening space 18 , and then closing the first sealing element 112 .

[0167] S011, execute step S002.

[0168] S012 , starting the first switch 142 to allow the particles in the second screening space 19 to fall into the first drying duct 141 , and starting the second blower 144 to dry the particles in the first drying duct 141 .

[0169] S013 , starting the first switch 142 again to close the first drying duct 141 .

[0170] S014 , starting the charge attachment assembly 15 to spray the charged electrolyte mist onto the dried particles in the first drying pipe 141 .

[0171] S015 , starting the first magnetic field generator 162 and the vacuum pump 17 .

[0172] S016 , starting the second switch 143 to allow the particles in the first drying duct 141 to fall into different collectors 163 .

[0173] In this embodiment, the first sealing element 112 is first activated to seal the connection between the first screening pipe 111 and the de-adhesion component 13, and then the first filter element 113 and the second filter element 114 are activated to connect the first screening space 18, the second screening space 19 and the third screening space 20, and the particles to be screened are fed into the first screening space 18 through the feeding port 21.

[0174] Water is injected into the first screening space 18 through the first circulation pipeline 121, so that the water impacts the particles in the first screening space 18, causing the particles to impact the first filter element 113, and then some of the particles pass through the first filter element 113 and enter the second screening space 19. When the water in the first screening space 18 flows into the second screening space 19, the water impacts the particles in the second screening space 19, causing the particles to impact the second filter element 114, and then some of the particles pass through the second filter element 114 and enter the third screening space 20.

[0175] The first stripping plate 113 e is driven to clean particles stuck on the first screen 113 a by pushing and pulling the first spur plate 113 f back and forth. Similarly, the second filter element 114 can also be cleaned.

[0176] The first threaded rod 113c is rotated to move the second screen 113b in alignment with the first screen 113a, thereby closing all first sieve holes 22 on the first screen 113a. Similarly, the second filter element 114 is activated to close the first screening pipe 111. Water is introduced into the second screening space 19 through the second circulation pipe 122, impacting the particles in the second screening space 19 and evenly distributing the particles therein. The first threaded rod 113c is rotated to move the second screen 113b in alignment with the first screen 113a, thereby opening all first sieve holes 22 on the first screen 113a. Similarly, the second filter element 114 is activated to open the second filter element 114.

[0177] Repeat steps S001 to S007 three times.

[0178] Start the first blower 132, the first heating element 133, and the first sealing element 112 to blow the particles in the first screening space 18 back and forth toward the first heating element 133, thereby separating the adhering particles. Turn off the first blower 132 and the first heating element 133, start the ultrasonic vibrator 134 to return the particles to the first screening space 18, and then close the first sealing element 112. Execute step S002. Activate the first switch 142 to allow the particles in the second screening space 19 to fall into the first drying duct 141. Then, activate the first switch 142 again to seal the first drying duct 141.

[0179] The second blower 144 is activated to dry the particles in the first drying duct 141. The charge attachment assembly 15 is activated to spray the dried particles in the first drying duct 141 with a charged electrolyte mist. The first magnetic field generator 162 and the vacuum pump 17 are activated. The second switch 143 is activated to allow the particles in the first drying duct 141 to fall into different collectors 163.

[0180] The various technical features of the above-described embodiments can be combined arbitrarily, and the execution order of the method steps is not restricted. In order to make the description concise, not all possible combinations of the various technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0181] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A multi-size microsphere screening device, characterized in that: The multi-size microsphere screening device comprises: A first screening component is hollow inside and is used for screening particles to obtain particles within a target size range; a water circulation assembly fixedly disposed on the first screening assembly, the water circulation assembly being in communication with the first screening assembly, and being used to impact particles in the first screening assembly; a de-adhesion component, disposed on one side of the first screening component, the de-adhesion component being in communication with the first screening component, and being used to remove particles adhering to the first screening component; a drying assembly, disposed at the bottom of the first screening assembly, the drying assembly being in communication with the first screening assembly, and being used to dry particles within a target size range dropped by the first screening assembly; A charge attachment component is fixedly arranged on the drying component, and is used to attach charges to the dried particles in the drying component; a second screening assembly, disposed at the bottom of the charge adhesion assembly, the second screening assembly being in communication with the charge adhesion assembly, and configured to further perform multi-stage screening on particles falling from the charge adhesion assembly; The vacuum pump is fixedly arranged on the second screening component, and is used for drawing the interior of the second screening component into a vacuum state.

2. The multi-size microsphere screening device according to claim 1, characterized in that: The first screening assembly comprises: a first screening pipe, the interior of which is hollow, and one end of which is fixedly connected to the de-adhesion component; a first sealing member, provided at a connection between the first screening pipe and the de-adhesion assembly, the first sealing member being used to isolate the first screening pipe from the de-adhesion assembly; a first filter element disposed inside the first screening pipe, the first filter element being disposed on a side of the first sealing element away from the de-adhesion assembly, the first filter element, the first sealing element, and the first screening pipe forming a first screening space; a second filter element disposed inside the first screening pipe, the second filter element having the same structure as the first filter element, and disposed on a side of the first filter element away from the first sealing element, the first filter element, the second filter element, and the first screening pipe forming a second screening space; The first closing member is arranged on a side of the second filter member away from the first filter member. The first closing member is fixedly connected to the first screening pipe. The first closing member, the second filter member and the first screening pipe form a third screening space.

3. The multi-size microsphere screening device according to claim 2, characterized in that: The first sealing member comprises: a first sealing plate, disposed at a connection between the first screening pipe and the de-adhesion assembly, the first sealing plate being slidably connected to the first screening pipe, and the first sealing plate sealing the first screening pipe; a first support rod, slidably disposed on the first screening pipe, the first support rod being fixedly connected to the first sealing plate; The first fastening nut is sleeved on the first support rod, the first fastening nut is threadedly connected to the first support rod, and the first fastening nut abuts against the first screening pipe.

4. The multi-size microsphere screening device according to claim 3, characterized in that: The first filter element comprises: a first screen, fixedly disposed inside the first screening pipe, and having a plurality of first screen holes; a second screen, slidably disposed on the first screen, wherein a plurality of second screen holes are formed on the second screen, and each second screen hole corresponds to one of the first screen holes; a first threaded rod, disposed on the first screening pipe, the first threaded rod being threadedly connected to the first screening pipe, and the first threaded rod being rotatably connected to the second screen; a first support shaft rotatably disposed in the middle of the first screen; a first stripping plate, disposed on one side of the first screen, the first stripping plate abutting against the first screen; The first spur plate is arranged on the other side of the first screen, the first spur plate is slidably connected to the first screening pipe, and the first spur plate is gear-coupled with the first support shaft.

5. The multi-size microsphere screening device according to claim 2, characterized in that: The water circulation component includes: A first circulation pipeline is arranged in a U shape, the first circulation pipeline is arranged on the top of the first screening pipeline, and both ends of the first circulation pipeline are connected to the first screening space; The second circulation pipeline is arranged in a U shape. The second circulation pipeline is arranged on the top of the first screening pipeline. Both ends of the second circulation pipeline are connected to the second screening space.

6. The multi-size microsphere screening device according to claim 3, characterized in that: The de-adhesion component comprises: a first connecting pipe, arranged to be inclined, the first connecting pipe being arranged on a side close to the first sealing plate, one end of the first connecting pipe being in communication with the first screening pipe; a first blower, disposed at the bottom of the first filter element, the first blower being in communication with the first screening pipe; a first heating element, fixedly disposed at the other end of the first connecting tube; The ultrasonic vibrator is fixedly mounted on the first connecting tube.

7. The multi-size microsphere screening device according to claim 2, characterized in that: The drying component comprises: a first drying pipe having a hollow interior, the first drying pipe being arranged at the bottom of the first screening pipe, and the first drying pipe being in communication with the second screening space; a first switch, disposed at the connection between the first drying pipe and the first screening pipe, the first switch being used to close or open an opening of the first drying pipe; a second switch, disposed inside the first drying duct, the second switch being used to close or open another opening of the first drying duct; a second blower, fixedly mounted on the first drying duct, the second blower being in communication with the first drying duct; The charge attachment component is fixedly arranged on the first drying pipe.

8. The multi-size microsphere screening device according to claim 7, characterized in that: The second screening assembly comprises: a second screening pipe, disposed at the bottom of the first drying pipe, the second screening pipe being in communication with the first drying pipe; a first magnetic field generator, fixedly disposed at one end of the second screening pipe; The collector is provided in plurality, and the plurality of collectors are fixedly provided at the bottom of the second screening pipe, and the plurality of collectors are equidistantly arranged along the length extension direction of the second screening pipe; The vacuum pump is fixedly arranged on the second screening pipe, and the vacuum pump is communicated with the interior of the second screening pipe.

9. The multi-size microsphere screening device according to claim 8, characterized in that: The multi-size microsphere screening device further includes a feeding port, which is arranged at the top of the first screening pipe and is communicated with the first screening space.

10. A multi-size microsphere screening method, applied to the multi-size microsphere screening device according to any one of claims 1 to 9, characterized in that: The multi-size microsphere screening method comprises: S001, first activate the first sealing element to seal the connection between the first screening pipe and the de-adhesion assembly, then activate the first filter element and the second filter element to connect the first screening space, the second screening space, and the third screening space, and feed the particles to be screened into the first screening space through the feeding port; S002, injecting water into the first screening space through the first circulation pipeline, so that the water impacts the particles in the first screening space, causing the particles to impact the first filter element, thereby causing some of the particles to pass through the first filter element and enter the second screening space; S003, when the water in the first screening space flows into the second screening space, the water impacts the particles in the second screening space, causing the particles to impact the second filter element, and then causing some particles to pass through the second filter element and enter the third screening space; S004, by pushing and pulling the first straight tooth plate back and forth to drive the first stripping plate to clean the particles stuck on the first screen, and similarly, the second filter element can also be cleaned; S005, rotating the first threaded rod to drive the second screen to move relative to the first screen, thereby closing all the first screen holes on the first screen, and similarly activating the second filter element to close the first screening pipe; S006, introducing water into the second screening space through the second circulation pipeline to impact the particles in the second screening space so that the particles in the second screening space are evenly distributed; S007, rotating the first threaded rod to drive the second screen to move relative to the first screen, thereby opening all the first screen holes on the first screen, and similarly activating the second filter element to open the second filter element; S008, repeat steps S001 to S007 three times; S009, starting the first blower, the first heating element, and the first sealing element so that the particles in the first screening space are blown back and forth toward the first heating element, thereby separating the adhering particles; S010, turning off the first blower and the first heating element, starting the ultrasonic vibrator to return the particles to the first screening space, and then closing the first sealing element; S011, execute step S002; S012, activating the first switch to allow the particles in the second screening space to fall into the first drying duct, and activating the second blower to dry the particles in the first drying duct; S013, starting the first switch again to close the first drying duct; S014, starting the charge attachment component to spray charged electrolyte mist onto the dried particles in the first drying pipe; S015, starting the first magnetic field generator and the vacuum pump; S016, starting the second switch to allow the particles in the first drying pipe to fall into different collectors.

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