Screening device of tablet press

Abstract

The utility model provides a screening device of a tablet press, which comprises a material box and a support arranged on the material box, the material box is provided with an opening, the screening device further comprises a screening assembly and a winnowing assembly, the screening assembly is rotatably arranged on the support, and the winnowing assembly is arranged on the material box; the winnowing assembly comprises a feeding hopper and an air outlet pipe, the feeding hopper is installed at the feeding end of the screening assembly and is obliquely arranged relative to the hopper, and the high end of the feeding hopper is fixedly connected with a material collecting box; the air outlet pipe is installed on the feeding hopper, the air outlet pipe is obliquely arranged in the direction facing the material collecting box, an air blower is installed on the feeding hopper, and the air inlet end of the air outlet pipe is connected with the air blower; the tablet screening mechanism can solve the problem that in the process of screening tablets through a screening mechanism in the prior art, powder contained in the tablets is prone to blocking the screening structure, and therefore effective screening cannot be conducted.

Description

Technical Field

[0001] The utility model relates to the technical field of screening devices, in particular to a screening device for a tablet press. Background Art

[0002] Before drug manufacturing begins, the required raw materials and auxiliary substances need to be prepared. Raw materials usually include active ingredients, fillers, stabilizers, solvents, etc. These raw materials need to meet the quality standards specified in the pharmacopoeia. According to the drug formulation requirements, the ratio and dosage of each raw material should be determined. The formulation design needs to take into account factors such as drug stability, solubility, bioavailability, etc., and make reasonable ratio calculations. The various raw materials should be mixed according to the formulation requirements to ensure that the drug ingredients are evenly distributed. The mixed drugs may need to be granulated to make the powdered raw materials into granules for subsequent processing and packaging. The mixed drugs are compressed with a tablet press to make solid dosage forms suitable for oral or other routes of administration.

[0003] The existing method for screening drugs is manual screening, which is not only time-consuming and labor-intensive but also inefficient. In order to solve the problems existing in the prior art, the utility model with announcement number CN221183691U discloses a drug screening device for a pharmaceutical tablet press (hereinafter referred to as: prior art 1) comprising a base plate and a body, the body being provided with a drug screening structure for a pharmaceutical tablet press, the drug screening structure for a pharmaceutical tablet press comprising a first shell, the inner wall of the first shell being fixedly connected to a first motor through a bracket, the output shaft of the first motor being fixedly connected to a disc through a reducer, the disc being movably connected to a thin rod through a pin, the thin rod being movably connected to a straight rod through a pin, the straight rod being movably connected to the inner wall of the first shell through a pin, the straight rod being movably connected to a first vertical rod through a pin, a cross bar being fixedly connected to the surface of the first vertical rod, the cross bar passing through the first shell and the body and being slidably connected to a slideway processed on the first shell and the body.

[0004] Although the working height of the machine body can be adjusted by the cooperation of the lifting safety structure and the machine body in the prior art 1, thereby improving the safety of the equipment; however, a large amount of powder will be generated in the tablets made by tabletting during the molding process. When the screening mechanism in the prior art 1 is screening the tablets, the powder contained in the tablets can easily block the screening structure, thereby making it impossible to perform effective screening. Utility Model Content

[0005] The utility model aims to provide a tablet screening device for a pharmaceutical tablet press, which, in actual use, can solve the problem in the prior art that, during the screening process of the tablets, the powder contained in the tablets easily blocks the screening structure, thereby causing ineffective screening.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A screening device for a tablet press comprises a material box and a bracket mounted on the material box, the material box is provided with an opening, and further comprises a screening component and a wind selection component, the screening component is rotatably mounted on the bracket, and the wind selection component is mounted on the material box;

[0008] The air selection assembly includes an inlet hopper and an outlet pipe, the inlet hopper is installed at the feed end of the screening assembly and is tilted, and the high end of the inlet hopper is fixedly connected to a collection box; the outlet pipe is installed on the inlet hopper, and the outlet pipe is tilted toward the collection box. A blower is installed on the inlet hopper, and the air inlet end of the outlet pipe is connected to the blower;

[0009] A driving device for driving the screening component to rotate is installed on the bracket, and an exhaust fan is installed in the collecting box.

[0010] Preferably, the screening assembly is installed on the bracket at an angle.

[0011] Preferably, the screening assembly includes a first sieve drum and a second sieve drum, and the first sieve drum is coaxially connected to the second sieve drum; a plurality of first sieve holes are arranged on the surface of the first sieve drum, and a plurality of second sieve holes are arranged on the surface of the second sieve drum, and the diameter of the second sieve holes is larger than the diameter of the first sieve holes; the driving device is used to drive the first sieve drum and the second sieve drum to rotate.

[0012] Preferably, the first sieve cylinder and the second sieve cylinder are detachably connected.

[0013] Preferably, a stopper is connected to the feed hopper, and a material discharge channel is formed between the stopper and the material collection box.

[0014] Preferably, a discharge port is provided at the bottom end of the collecting box, and a sealing plug is slidably installed at the discharge port.

[0015] Preferably, a plurality of sealing protrusions are provided on the sealing plug.

[0016] Preferably, the driving device comprises a driving motor, a driving gear and a driven gear, the driving motor is mounted on the material box, and the driving motor is used to drive the driving gear to rotate; the driven gear is sleeved on the first screen cylinder, and the driving gear is meshed with the driven gear.

[0017] Preferably, a rotating rod is rotatably mounted on the bracket, and the rotating rod is fixedly connected to the driving motor; a supporting wheel is fixedly connected to the rotating rod, and guide grooves for cooperating with the supporting wheel are provided on the first sieve drum and the second sieve drum.

[0018] Preferably, a movable plate is slidably mounted on the feed hopper, the blower is fixedly mounted on the movable plate, the air outlet pipe is connected to the movable plate through the blower, and a fixing bolt is threadedly connected to the movable plate.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] In the utility model, the feed hopper is used to guide the tablets just made by tableting into the screening component, and the screening component rotates under the drive of the driving device installed on the bracket. The rotating screening component can screen the tablets of different sizes entering the screening component, thereby realizing the rapid screening and classification of the tablets, and improving the efficiency and effect of tablet screening;

[0021] After the blower installed on the feed hopper is started, the airflow blown out through the outlet pipe connected to the blower and the feed hopper can clean the powder and impurities present in the tablets placed on the surface of the feed hopper, and the exhaust fan installed in the collection box can make the powder and impurities generated in the tablet pressing process of the tablets be sucked into the collection box for collection under the action of the exhaust fan; at the same time, before the tablets in the feed hopper enter the screening component, the airflow blown out through the outlet pipe can remove part of the moisture contained in the tablets, thereby preventing the tablets from adhering to the inner wall of the screening component or clogging the screening component due to excessive water content in the screening component, resulting in the inability to effectively screen the screening component. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a three-dimensional diagram of the utility model.

[0024] Figure 2 It is a structural schematic diagram of the utility model.

[0025] Figure 3 For this utility model Figure 2 A partial enlarged view of point A in the middle.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 101-material box, 102-bracket, 103-screening component, 104-wind selection component, 105-feed hopper, 106-air outlet pipe, 107-collection box, 108-blower, 109-driving device, 110-first screen drum, 111-second screen drum, 112-block, 113-discharge port, 114-sealing plug, 115-sealing protrusion, 116-fixing bolt, 117-driving gear, 118-driven gear, 119-rotating rod, 120-support wheel, 121-guide groove, 122-moving plate, 123-fixing bolt. DETAILED DESCRIPTION

[0028] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0029] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0031] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0032] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the present utility model. In order to simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0034] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0035] See also Figure 1-Figure 3 This embodiment discloses a screening device for screening tablet-formed drugs, specifically a screening device for a tablet press, comprising a material box 101 and a bracket 102 mounted on the material box 101, the material box 101 is provided with an opening, and further comprising a screening component 103 and an air selection component 104, the screening component 103 is rotatably mounted on the bracket 102, and the air selection component 104 is mounted on the material box 101;

[0036] The air selection component 104 includes a feed hopper 105 and an air outlet pipe 106. The feed hopper 105 is installed at the feed end of the screening component 103 and is tilted. The high end of the feed hopper 105 is fixedly connected to a collection box 107; the air outlet pipe 106 is installed on the feed hopper 105, and the air outlet pipe 106 is tilted toward the direction of the collection box 107. A blower 108 is installed on the feed hopper 105, and the air inlet end of the air outlet pipe 106 is connected to the blower 108;

[0037] A driving device 109 for driving the screening assembly 103 to rotate is installed on the bracket 102 , and the blower 108 is used to draw external air into the air outlet pipe 106 .

[0038] In this embodiment, the bracket 102 is symmetrically connected to the front and rear ends of the material box 101, and the opening is located below the gravel screening component 103; the feed hopper 105 is used to guide the tablets that have just been pressed into the screening component 103, and the screening component 103 is driven to rotate by a driving device 109 installed on the bracket 102. The rotating screening component 103 can screen tablets of different sizes entering the screening component 103, thereby realizing rapid screening and classification of tablets, and improving the efficiency and effect of tablet screening; after the blower 108 installed on the feed hopper 105 is started, the airflow blown out from the air outlet pipe 106 connected to the blower 108 and the feed hopper 105 can screen the tablets placed on the surface of the feed hopper 105. The existing powder and impurities are cleaned up, and the exhaust fan installed in the collecting box 107 can make the powder and impurities generated in the tablet pressing process of the tablets all be sucked into the collecting box 107 for collection under the action of the exhaust fan; at the same time, before the tablets in the hopper 105 enter the screening component 103, the air flow blown out by the outlet pipe 106 can remove part of the moisture contained in the tablets, thereby preventing the tablets from adhering to the inner wall of the screening component 103 or clogging the screening component 103 due to excessive water content in the screening component 103, resulting in the inability to effectively screen the screening component 103; in this embodiment, a filter is installed at the air inlet of the exhaust fan, and the filter can be set to prevent the dust entering the collecting box 107 from being sucked into the exhaust fan.

[0039] In some embodiments, the screening component 103 is installed obliquely on the bracket 102. By making the screening component 103 oblique, it is easy for the tablets entering the screening component to move in the screening component 103, so that the screening component 103 can effectively screen the tablets.

[0040] In some embodiments, the screening assembly 103 includes a first screen drum 110 and a second screen drum 111, the first screen drum 110 and the second screen drum 111 are coaxially connected; the surface of the first screen drum 110 is provided with a plurality of first screen holes, the surface of the second screen drum 111 is provided with a plurality of second screen holes, and the diameter of the second screen holes is greater than the diameter of the first screen holes; the driving device 109 is used to drive the first screen drum 110 and the second screen drum 111 to rotate. A partition is fixedly connected to the material box 101, and the partition divides the material box 101 into a first storage area and a second storage area; the first screen drum 110 is used to screen tablets with smaller shapes due to feeding errors or split and loose tablets in the tableting process, and the second screen drum 111 is used to screen tablets with qualified shapes and complete tablets; the screened tablets fall into the first storage area and the second storage area through the first screen hole and the second screen hole respectively for collection.

[0041] In some embodiments, the first sieve drum 110 and the second sieve drum 111 are detachably connected. The first sieve drum 110 and the second sieve drum 111 are detachably connected by bolts, so that the operator can easily disassemble and clean the first sieve drum 110 and the second sieve drum 111.

[0042] In some embodiments, a stopper 112 is connected to the feed hopper 105, and a material discharge channel is formed between the stopper 112 and the material collection box 107. The stopper 112 is provided with an arc surface, and the arc surface can guide the dust moving toward the material collection box 107 under the influence of the air flow blown out of the air outlet pipe 106, so that the dust falls into the material collection box 107 through the material discharge channel; in the process of the dust falling into the material collection box 107, the stopper 112 can also block the dust raised in the material collection box 107.

[0043] In some embodiments, a discharge port 113 is provided at the bottom of the material collecting box 107, and a sealing plug 114 is slidably installed at the discharge port 113. The dust collected in the material collecting box 107 can be cleaned through the discharge port 113 provided at the bottom of the material collecting box 107.

[0044] In some embodiments, the sealing plug 114 is provided with a plurality of sealing protrusions 115. The sealing protrusions 115 are annular protrusions, and the annular protrusions are arranged on the sealing plug 114 at equal intervals, so as to perform multiple sealing on the discharge port 113.

[0045] In some embodiments, the driving device 109 includes a driving motor, a driving gear 117 and a driven gear 118. The driving motor is installed on the material box 101, and the driving motor is used to drive the driving gear 117 to rotate; the driven gear 118 is sleeved on the first screen drum 110, and the driving gear 117 is meshed with the driven gear 118. The output end of the driving motor is fixedly connected to the driving gear 117. When the driving motor drives the driving gear 117 to rotate, the driven gear 118 meshed with the driving gear 117 rotates and drives the first screen drum 110 and the second screen drum 111 to rotate, so that the first screen drum 110 and the second screen drum 111 can screen the tablets.

[0046] In some embodiments, a rotating rod 119 is rotatably installed on the bracket 102, and the rotating rod 119 is fixedly connected to the driving motor; a support wheel 120 is fixedly connected to the rotating rod 119, and a guide groove 121 for cooperating with the support wheel 120 is provided on the first sieve drum 110 and the second sieve drum 111. The rotating rod 119 is fixedly connected to the output end of the driving motor. When the driving motor drives the rotating rod 119 to rotate, the supporting wheel 120 fixedly connected to the rotating rod 119 rotates accordingly; by providing the supporting wheel 120, the sliding friction between the bracket 102 and the first sieve drum 110 and the second sieve drum 111 can be converted into rolling friction; the supporting wheel 120 not only avoids the first sieve drum 110 and the second sieve drum 111 from scratching against the bracket 102, but also plays a further supporting role for the first sieve drum 110 and the second sieve drum 111, so that the rotation of the first sieve drum 110 and the second sieve drum 111 is more stable; by providing a guide groove 121 for limiting and guiding the supporting wheel 120, the horizontal deviation of the first sieve drum 110 and the second sieve drum 111 during the rotation process can be avoided.

[0047] In some embodiments, a movable plate 122 is slidably mounted on the feed hopper 105, the blower 108 is fixedly mounted on the movable plate 122, the air outlet pipe 106 is connected to the movable plate 122 through the blower 108, and a fixing bolt 116 is threadedly connected to the movable plate 122. In this embodiment, the movable plate 122 is symmetrically mounted on the front and rear sides of the feed hopper 105; a limiting groove is provided on the movable plate 122, and the movable plate 122 is slidably mounted on the feed hopper 105 through the limiting groove. By moving the movable plate 122, the position of the air outlet pipe 106 can be adjusted according to the actual needs. When the movable plate 122 is adjusted to the preset position, the fixing bolt 116 is rotated so that the end of the fixing bolt 116 close to the limiting groove is pressed against the outer wall of the feed hopper 105, and the fixing of the movable plate 122 can be achieved.

[0048] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A screening device for a tablet press, comprising a material box (101) and a bracket (102) mounted on the material box (101), wherein the material box (101) is provided with an opening, characterized in that: It also includes a screening component (103) and a wind selection component (104), wherein the screening component (103) is rotatably mounted on the bracket (102), and the wind selection component (104) is mounted on the material box (101); The air selection component (104) comprises an inlet hopper (105) and an air outlet pipe (106); the inlet hopper (105) is installed at the feed end of the screening component (103) and the inlet hopper (105) is tilted, and the high end of the inlet hopper (105) is fixedly connected to a material collection box (107); the air outlet pipe (106) is installed on the inlet hopper (105), and the air outlet pipe (106) is tilted toward the direction of the material collection box (107); a blower (108) is installed on the inlet hopper (105), and the air inlet end of the air outlet pipe (106) is connected to the blower (108); A driving device (109) for driving the screening assembly (103) to rotate is installed on the bracket (102), and an exhaust fan is installed in the collecting box (107).

2. A screening device for a tablet press according to claim 1, characterized in that: The screening assembly (103) is installed obliquely on the bracket (102).

3. A screening device for a tablet press according to claim 2, characterized in that: The screening assembly (103) comprises a first sieve drum (110) and a second sieve drum (111), wherein the first sieve drum (110) and the second sieve drum (111) are coaxially connected; a plurality of first sieve holes are arranged on the surface of the first sieve drum (110), and a plurality of second sieve holes are arranged on the surface of the second sieve drum (111), wherein the diameter of the second sieve holes is greater than the diameter of the first sieve holes; and the driving device (109) is used for driving the first sieve drum (110) and the second sieve drum (111) to rotate.

4. A screening device for a tablet press according to claim 3, characterized in that: The first sieve drum (110) and the second sieve drum (111) are detachably connected.

5. The screening device for a tablet press according to claim 1, characterized in that: The feed hopper (105) is connected to a stopper (112), and a material discharge channel is formed between the stopper (112) and the material collection box (107).

6. A screening device for a tablet press according to claim 5, characterized in that: A discharge port (113) is provided at the bottom end of the material collecting box (107), and a sealing plug (114) is slidably mounted at the discharge port (113).

7. A screening device for a tablet press according to claim 6, characterized in that: A plurality of sealing protrusions (115) are provided on the sealing plug (114).

8. The screening device for a tablet press according to claim 3, characterized in that: The driving device (109) comprises a driving motor, a driving gear (117) and a driven gear (118); the driving motor is mounted on the material box (101) and is used to drive the driving gear (117) to rotate; the driven gear (118) is sleeved on the first screen drum (110), and the driving gear (117) meshes with the driven gear (118).

9. A screening device for a tablet press according to claim 8, characterized in that: A rotating rod (119) is rotatably mounted on the bracket (102), and the rotating rod (119) is fixedly connected to the driving motor; a supporting wheel (120) is fixedly connected to the rotating rod (119), and guide grooves (121) for cooperating with the supporting wheel (120) are provided on the first sieve drum (110) and the second sieve drum (111).

10. The screening device for a tablet press according to claim 1, characterized in that: A movable plate (122) is slidably mounted on the feed hopper (105), the blower (108) is fixedly mounted on the movable plate (122), the air outlet pipe (106) is connected to the movable plate (122) via the blower (108), and a fixing bolt (116) is threadedly connected to the movable plate (122).

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