Powder screening device for preparation
By using the screening assembly and vibration assembly of the screening powder device during the preparation process, efficient screening of drug raw materials and auxiliary materials is achieved, solving the problem of dispersing the mixture during transportation, ensuring product consistency and equipment safety.
Patent Information
- Application Number
- CN202422089200.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-27
AI Technical Summary
During the preparation process, the mixed drug raw materials and auxiliary materials are easily dispersed during the transportation process, resulting in the granulated drug mixture and the powdered drug mixture being sent to the pressed tablet process, affecting product consistency and may damage the equipment.
A powder screening device for preparation is adopted, including a base, a screen assembly and a vibration assembly. The mixture is vibrated at high frequency on the inclined table by a vibrator. The staggered powder and screening grooves and filter screens are used to realize the sieving of powder and granular substances. The powder is exported through the powder outlet port and the granular substances are exported through the discharge port.
The effective separation of powder and granular substances is achieved, ensuring product consistency in subsequent processing and preventing equipment damage.
Smart Images
Figure CN223043092U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of preparation equipment, and particularly relates to a powder screening device for preparation. Background Art
[0002] In the process of preparation, appropriate drug raw materials and excipients need to be selected first. The drug raw materials are the main active ingredients of the preparation, while the excipients are used to increase the stability of the preparation, improve the taste and appearance of the drug. The drug raw materials and excipients are mixed according to a certain formula ratio to ensure that the drug content and quality of each tablet or granule in the subsequent production are consistent. After mixing, the drug raw materials and excipients are granulated and pressed into granules of a certain size and shape. Only after granulation can the drug mixture enter the next process for further pressing into tablets to complete the production.
[0003] However, after the mixed drug raw materials and excipients are granulated, it is very likely that the medicament will be dispersed during transportation, resulting in the granulated drug mixture and the powdered drug mixture being sent into the tablet pressing process together, causing the subsequent produced tablets to carry the powdered mixture, which not only affects the consistency of the product, but also may cause damage to the machine due to the attached powder in the subsequent tablet pressing equipment. Content of the Utility Model
[0004] To solve the above technical problems, the utility model provides a powder screening device for preparation. After the mixed drug raw materials and excipients are sent into the screening tank, under the activation of the vibrating machine, the mixture is filtered through the filter screen, and the powder falls into the powder passing tank through the filter screen and is discharged from the powder outlet, while the granulated mixture is discharged from the discharge port on the screening tank. The discharged powder can be reprocessed into granules later, and the screened granulated mixture enters the tablet pressing process for further processing.
[0005] To achieve the above object, the technical solution adopted by the utility model is as follows:
[0006] A powder screening device for preparation, comprising a base, a screening assembly and a vibrating assembly. The screening assembly includes a base plate, a powder passing tank, a filter screen member, a screening tank and an inclined table. The base plate, the powder passing tank, the filter screen member and the screening tank are connected in sequence from bottom to top. The lower end surface of the inclined table is a horizontal plane, and the upper end surface of the inclined table is an inclined surface. The bottom of the powder passing tank is connected to the inclined surface, and the bottom of the inclined table is connected to the base plate. The output end of the vibrating machine points to the inclined table.
[0007] The powder passing trough has a horizontal lower end face and an arc-shaped plate facing downward at the top view. The two ends of the left end face of the powder passing trough are respectively connected to the upper end face and the lower end face, and the right end face of the powder passing trough is a powder outlet. The sieving trough has a horizontal upper end face and an arc-shaped plate facing upward at the top view. The two ends of the left end face of the sieving trough are respectively connected to the upper end face and the lower end face, and the right end face of the sieving trough is a discharge port. The powder passing trough and the sieving trough are in an interleaved state, and the upper opening of the powder passing trough is connected to the bottom intersection of the sieving trough. The filter sieve member includes a filter sieve plate, a filter sieve mesh, an upper side plate and a lower side plate. The filter sieve plate is horizontally placed in the sieving trough, and the filter sieve mesh is arranged in the filter sieve holes on the filter sieve plate. The top view projection surfaces of the filter sieve holes respectively cover the powder passing trough and the sieving trough. Under the top view of the filter sieve plate, the upper side plate and the lower side plate are respectively vertically connected to the filter sieve plate. The side surface of the upper side plate is parallel to the upper edge of the filter sieve hole, and the side surface of the lower side plate is parallel to the lower edge of the filter sieve hole. The upper side plate, the lower side plate, the left end face of the sieving trough and the filter sieve plate enclose a filter sieve cavity.
[0008] The vibration assembly includes a vibrator, a spring and a connecting rod. The vibrator is arranged on the base, the output end of the vibrator faces upward and can be abutted and connected to the lower end face of the substrate. The connecting rod penetrates through the base and is detachably connected to the substrate. The spring is sleeved on the connecting rod, and the upper and lower end faces of the spring are respectively abutted against the substrate and the base. There are four groups of the spring and the connecting rod, and the four groups of the spring and the connecting rod are respectively arranged at the four corners of the base. The vibrator is arranged outside the square area enclosed by the four groups of the spring and the connecting rod.
[0009] For the powder sieving device for preparations adopting this structure, the base plays the most basic role of stability. The four groups of springs and connecting rods are respectively arranged at the four corners of the base, and support the substrate connected thereto from four points. Since both the powder passing trough and the sieving trough are arranged on the inclined table, the powder outlet and the discharge port are both located at the lower part of the inclined table and point obliquely downward. Therefore, the output end of the vibrator is abutted against the high end of the inclined surface of the inclined table, and the vibrator is arranged outside the square area enclosed by the four groups of springs and connecting rods. Therefore, when the vibrator is started, the high end of the inclined surface of the inclined table will vibrate at a high frequency with the low end of the inclined surface as the rotation center, and will perform reciprocating vibration under the compression force of the spring. Therefore, the mixture placed in the sieving trough will always move towards the lower part of the inclined table under vibration until the powder is vibrated out from the powder outlet and the granular material is vibrated out from the discharge port.
[0010] In order to achieve the sieving of powders and granular materials, it is necessary to layer the mixture. For better sieving and separate discharging at both ends, the powder passing trough is set with its arc surface facing downwards, and the sieving trough is set with its arc surface facing upwards, so that from a top-down perspective, the powder passing trough and the sieving trough are in a staggered state. The overlapping projection area of the powder passing trough and the sieving trough is the sieving position. Therefore, the filter sieve plate is horizontally placed in the sieving trough, and the top-down perspective projection surfaces of the sieving holes on it respectively cover the powder passing trough and the sieving trough. And a filter sieve mesh is placed in the sieving holes. Therefore, when the vibrator is working, the mixture placed on the filter sieve plate will continuously move towards the discharge port under high-frequency vibration. In order to ensure that the mixture can only pass through the position of the filter sieve mesh, upper side plates and lower side plates are added, restricting the path of the mixture in the filter sieve cavity. For the mixture passing through the filter sieve mesh, the powder will fall down into the powder passing trough, while the granular materials will enter the discharge port and fall out after passing through the filter sieve mesh under continuous vibration, and the powder will also fall out from the powder outlet under continuous vibration, achieving the sieving of powders and granular materials.
[0011] Further, the filter sieve component further includes a spray head. The spray head is arranged on the filter sieve plate. One end of the spray head penetrates through the upper side plate and points to the filter sieve cavity, and the other end of the spray head is connected to an air pump; the spray head points to the left end face of the sieving trough.
[0012] Compared with the prior art, the advantages of the present utility model are as follows: By the vibrator abutting against the high end of the inclined surface of the inclined table, the high end of the inclined surface of the inclined table will perform high-frequency vibration with the low end of the inclined surface as the rotation center, and will perform reciprocating vibration under the compression force of the spring, so that the mixture placed in the filter sieve cavity will continuously move towards the low end of the inclined table under vibration. And the powder passing trough and the sieving trough in a staggered state will make the top-down perspective projection surfaces of the sieving holes respectively cover the powder passing trough and the sieving trough. The mixture placed on the filter sieve plate will continuously move towards the discharge port under high-frequency vibration, achieving the sieving of powders and granular materials. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0014] Figure 1 It is a top-down perspective view of the present utility model;
[0015] Figure 2 It is a bottom-up perspective view of the present utility model;
[0016] Figure 3 It is an exploded schematic diagram of the present utility model;
[0017] Figure 4 This is a front top view exploded schematic diagram of the sieving component of the present utility model;
[0018] Figure 5 This is a rear top view exploded schematic diagram of the sieving component of the present utility model;
[0019] Figure 6 This is a front bottom view exploded schematic diagram of the sieving component of the present utility model.
[0020] Wherein: 1. Base; 2. Sieving component; 21. Substrate; 22. Powder passing trough; 221. Powder outlet; 23. Filter screen member; 231. Filter screen plate; 2311. Filter screen holes; 232. Filter screen mesh; 233. Upper side plate; 234. Lower side plate; 235. Sprayer; 24. Sieving trough; 2411. Upper part; 2412. Lower part; 241. Discharge port; 25. Inclined table; 3. Vibration component; 31. Vibrator; 32. Spring; 33. Connecting rod. Detailed implementation manners
[0021] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope protected by the present utility model.
[0022] The following will describe the detailed implementation manners of the present utility model with reference to the drawings:
[0023] As Figure 1-6 shown, a powder sieving device for preparations includes a base 1, a sieving component 2 and a vibration component 3. The sieving component 2 includes a substrate 21, a powder passing trough 22, a filter screen member 23, a sieving trough 24 and an inclined table 25. The substrate 21, the powder passing trough 22, the filter screen member 23 and the sieving trough 24 are connected in sequence from bottom to top. The lower end surface of the inclined table 25 is a horizontal plane, the upper end surface of the inclined table 25 is an inclined surface, the bottom of the powder passing trough 22 is connected to the inclined surface, the bottom of the inclined table 25 is connected to the substrate 21, and the output end of the vibrator 31 points to the inclined table 25.
[0024] The powder passing trough 22 has a horizontal lower end face and an arc-shaped plate facing downward at the top view. Both ends of the left end face of the powder passing trough 22 are connected to the upper end face and the lower end face respectively. The right end face of the powder passing trough 22 is a powder outlet 221. The sieving trough 24 has a horizontal upper end face and an arc-shaped plate facing upward at the top view. Both ends of the left end face of the sieving trough 24 are connected to the upper end face and the lower end face respectively. The right end face of the sieving trough 24 is a discharge outlet 241. The powder passing trough 22 and the sieving trough 24 are in an interleaved state, and the intersection of the upper opening of the powder passing trough 22 and the bottom of the sieving trough 24 is connected and communicated. The filter sieve member 23 includes a filter sieve plate 231, a filter sieve mesh 232, an upper side plate 233 and a lower side plate 234. The filter sieve plate 231 is horizontally placed in the sieving trough 24. The filter sieve mesh 232 is arranged in the filter sieve holes 2311 on the filter sieve plate 231. The projection planes of the filter sieve holes 2311 at the top view respectively cover the powder passing trough 22 and the sieving trough 24. At the top view of the filter sieve plate 231, the upper side plate 233 and the lower side plate 234 are vertically connected to the filter sieve plate 231 respectively. The side surface of the upper side plate 233 is parallel to the upper edge of the filter sieve hole 2311, and the side surface of the lower side plate 234 is parallel to the lower edge of the filter sieve hole 2311. The upper side plate 233, the lower side plate 234, the left end face of the sieving trough 24 and the filter sieve plate 231 enclose a filter sieve cavity.
[0025] The vibration assembly 3 includes a vibrator 31, a spring 32 and a connecting rod 33. The vibrator 31 is arranged on the base 1. The output end of the vibrator 31 faces upward and can be abutted and connected to the lower end face of the substrate 21. The connecting rod 33 penetrates through the base 1 and is detachably connected to the substrate 21. The spring 32 is sleeved on the connecting rod 33. The upper and lower end faces of the spring 32 are respectively abutted against the substrate 21 and the base 1. There are four groups of the spring 32 and the connecting rod 33, and the four groups of the spring 32 and the connecting rod 33 are respectively arranged at the four corners of the base 1. The vibrator 31 is arranged outside the square area enclosed by the four groups of the spring 32 and the connecting rod 33.
[0026] Further, the filter sieve member 23 further includes a spray head 235. The spray head 235 is arranged on the filter sieve plate 231. One end of the spray head 235 penetrates through the upper side plate 233 and points to the filter sieve cavity. The other end of the spray head 235 is connected to an air pump. The spray head 235 points to the left end face of the sieving trough 24.
[0027] The working mode of the present utility model is described as follows:
[0028] The sifting device for the preparation using this structure has a base 1 that plays the most fundamental stabilizing role. Four groups of springs 32 and connecting rods 33 are respectively arranged at the four corners of the base 1, and they support the connected substrate 21 from four points. Since the powder passing trough 22 and the sieving trough 24 are both arranged on the inclined platform 25, and the powder outlet 221 and the discharge outlet 241 are both located at the lower part of the inclined platform 25 and point obliquely downward, the output end of the vibrator 31 is abutted against the higher end of the inclined surface of the inclined platform 25, and the vibrator 31 is arranged outside the square area enclosed by the four groups of springs 32 and the connecting rods 33. Therefore, when the vibrator 31 is started, the higher end of the inclined surface of the inclined platform 25 will vibrate at a high frequency with the lower end of the inclined surface as the rotation center, and will vibrate reciprocally under the compression force of the springs 32. Therefore, the mixture placed in the sieving trough 24 will continuously move towards the lower part of the inclined platform 25 under vibration until the powder is vibrated out from the powder outlet 221 and the granular material is vibrated out from the discharge outlet 241. The deformation force of the springs 32 can be changed by screwing the connecting rods 33, thereby changing the amplitude of vibration, so as to adapt to the sieving of various different mixtures.
[0029] In order to realize the sieving of the powder and the granular material, it is necessary to layer the mixture. In order to better sieve and export the two ends separately, the powder passing trough 22 is set with a downward arc surface, and the sieving trough 24 is set with an upward arc surface, so that from a top view, the powder passing trough 22 and the sieving trough 24 are in an interleaved state. The overlapping projection area of the powder passing trough 22 and the sieving trough 24 is the sieving position. Therefore, the filter sieve plate 231 is horizontally placed in the sieving trough 24, and the top view projection surfaces of the sieving holes on it respectively cover the powder passing trough 22 and the sieving trough 24, and a filter sieve mesh 232 is placed in the sieving holes. Therefore, when the vibrator 31 is working, the mixture placed on the filter sieve plate 231 will continuously move towards the discharge outlet 241 under high-frequency vibration. In order to ensure that the mixture can only pass through the position of the filter sieve mesh 232, the upper side plate 233 and the lower side plate 234 are added to limit the path of the mixture in the filter cavity. For the mixture passing through the filter sieve mesh 232, the powder will fall down into the powder passing trough 22, while the granular material will enter the discharge outlet 241 and fall out after passing through the filter sieve mesh 232 during continuous vibration, and the powder will also fall out from the powder outlet 221 during continuous vibration, realizing the sieving of the powder and the granular material.
[0030] Since the powder passing trough 22 and the sieving trough 24 are in an interleaved state, and the upper end opening of the powder passing trough 22 communicates with the bottom intersection of the sieving trough 24, actually the lower bottom surface of the sieving trough 24 is covered under the sieve holes 2311 of the sieve plate 231. When the mixture passes through the sieve mesh 232, in addition to the powder falling into the powder passing trough 22, a part of the slowly filtered powder will also fall onto the bottom of the sieving trough 24. During continuous vibration, this part of the powder will be mixed with the granular material and sent out through the discharge port 241, resulting in poor sieving effect. Therefore, the sieve plate 231 can be extended to the discharge port 241, and the discharge port 241 is divided into an upper part 2411 and a lower part 2412. The upper part 2411 abuts against the sieve plate 231 in the form of an inclined surface access port or a conveyor belt, while the lower part 2412 is directly connected to the powder outlet 221 through a guide groove or other forms. Thus, a part of the powder falling onto the bottom of the sieving trough 24 can still be led out to the powder outlet 221, improving the sieving accuracy.
[0031] In addition, in order to accelerate the filtration of the powder, a spray head 235 is added. The spray head 235 is arranged on the sieve plate 231 and penetrates through the upper side plate 233 and points to the left end surface of the sieving trough 24 in the sieve cavity. Therefore, after connecting an air pump, the blown gas will form an air flow in the sieve cavity, assisting the powder in the mixture during high-frequency vibration to enter the sieve mesh 232. Since the discharge port 241 is separated as described above, the powder blown into the lower part 2412 by the air flow can also be well collected. Covers can be added to the top ends of the upper side plate 233 and the lower side plate 234 in the shape of the upper end surface structure, and a transparent plate is covered between the upper side plate 233 and the lower side plate 234. In addition to enclosing the sieve cavity into a relatively closed space to avoid pollution, it can also ensure that the air flow sprayed by the spray head 235 is restricted within the sieve cavity, ensuring that the powder can pass through the filtration of the sieve mesh 232.
[0032] The beneficial effects of the present utility model are as follows: The vibrator 31 abuts against the high end of the inclined surface of the inclined table 25. The high end of the inclined surface of the inclined table 25 will perform high-frequency vibration with the low end of the inclined surface as the rotation center, and will perform reciprocating vibration under the compression force of the spring 32, causing the mixture placed in the sieve cavity to continuously move towards the low end of the inclined table 25 under vibration. The powder passing trough 22 and the sieving trough 24 in an interleaved state will make the top view angle projection surfaces of the sieve holes cover the powder passing trough 22 and the sieving trough 24 respectively. The mixture placed on the sieve plate 231 will continuously move towards the direction of the discharge port 241 under high-frequency vibration, realizing the screening of powder and granular materials.
[0033] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A powder screening device for preparations, characterized in that: It includes a base, a screening component and a vibration component, wherein the screening component includes a base plate, a powder trough, a filter screen component and a screening trough, and the base plate, the powder trough, the filter screen component and the screening trough are connected in sequence from bottom to top; the vibration component includes a vibrator, a spring and a connecting rod, the vibrator is arranged on the base, the output end of the vibrator is upward and can be abutted against the lower end surface of the base plate, the connecting rod passes through the base and can be detachably connected to the base plate, the spring is sleeved on the connecting rod, and the upper and lower end surfaces of the spring are respectively abutted against the base plate and the base.
2. The powder sieving device for preparation according to claim 1, characterized in that: The springs and connecting rods include four groups, and the four groups of springs and connecting rods are arranged on four corners of the base. The vibrator is arranged outside the square area surrounded by the four groups of springs and connecting rods.
3. The powder sieving device for preparation according to claim 2, characterized in that: The screening assembly also includes an inclined table, the lower end surface of the inclined table is a horizontal surface, the upper end surface of the inclined table is an inclined surface, the bottom of the powder trough is connected to the inclined surface, the bottom of the inclined table is connected to a base plate, and the output end of the vibrator points to the inclined table.
4. The powder sieving device for preparation according to claim 3, characterized in that: The powder passing trough has a horizontal lower end surface when viewed from a top view, and an upper end surface is a downwardly facing arc-shaped plate, the two ends of the left end surface of the powder passing trough are respectively connected to the upper end surface and the lower end surface, and the right end surface of the powder passing trough is a powder outlet; the sieving trough has a horizontal upper end surface when viewed from a top view, and a lower end surface is an upwardly facing arc-shaped plate, the two ends of the left end surface of the sieving trough are respectively connected to the upper end surface and the lower end surface, and the right end surface of the sieving trough is a material outlet; the powder passing trough and the sieving trough are in a staggered state, and the upper end opening of the powder passing trough is connected to the bottom intersection of the sieving trough; the filter screen component includes a filter screen plate and a filter screen mesh, the filter screen plate is horizontally placed in the sieving trough, and the filter screen mesh is arranged in the filter screen hole on the filter screen plate.
5. The powder sieving device for preparation according to claim 4, characterized in that: The top-view projection surfaces of the filter holes respectively cover the powder slot and the sieving slot.
6. The powder sieving device for preparation according to claim 5, characterized in that: The filter screen component also includes an upper side plate and a lower side plate. When viewed from above, the upper side plate and the lower side plate are respectively vertically connected to the filter screen plate. The side surface of the upper side plate is parallel to the upper edge of the filter screen hole, and the side surface of the lower side plate is parallel to the lower edge of the filter screen hole. The upper side plate, the lower side plate, the left end surface of the screening slot and the filter screen plate together form a filter screen cavity.
7. The powder sieving device for preparation according to claim 6, characterized in that: The filter screen component also includes a nozzle, which is arranged on the filter screen plate. One end of the nozzle penetrates the upper side plate and points to the filter screen cavity, and the other end of the nozzle is connected to the air pump.
8. The powder sieving device for preparation according to claim 7, characterized in that: The nozzle is directed toward the left end surface of the screening tank.