Mixing and stirring kettle for preparing solid preparation

Abstract

The utility model relates to a mixing and stirring kettle for preparing a solid preparation, which comprises a kettle body, a flange plate arranged at the top of the kettle body, a sealing cover fixedly mounted at the top of the flange plate through a bolt, an inner cylinder rotatably connected to the inner wall of the kettle body, a first power mechanism arranged on the kettle body and used for driving the inner cylinder to rotate, and a plurality of feeding holes formed in the edge of the top of the sealing cover and extending into the inner cylinder, a second power mechanism for driving the stirring shafts to rotate is arranged at the top of the sealing cover, the rotating directions of the stirring shafts and the rotating direction of the inner cylinder are opposite, a discharging hopper is arranged at the center of the bottom of the kettle body, and a discharging opening with a valve is formed in the bottom of the inner cylinder. And scraping plates are detachably installed on the two sides of the inner wall of the flange plate, and the scraping plates make contact with the inner wall of the inner cylinder. The stirrer is sufficient in raw material stirring, good in mixing effect and convenient to use.

Description

Technical Field

[0001] The utility model relates to the field of drug preparation, in particular to a mixing and stirring kettle for preparing solid preparations. Background Art

[0002] The mixing and stirring kettle can ensure that the active pharmaceutical ingredients are fully and evenly mixed with various excipients such as fillers, disintegrants, lubricants, etc. This is crucial for the preparation of solid preparations with stable quality, because uneven mixing may lead to unstable preparation quality. The common mixing and stirring kettles currently have a fixed kettle body and an agitator installed inside to directly mix and stir the materials. The flow direction of the materials inside the kettle body is relatively single, the mixing effect is average, and the materials are easily attached to the inner wall during stirring, affecting the mixing quality. Summary of the invention

[0003] The utility model aims to solve the deficiencies of the prior art and provides a mixing and stirring kettle for preparing solid preparations.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a mixing and stirring kettle for preparing solid preparations, comprising a kettle body, a flange plate is provided on the top of the kettle body, a sealing cover is fixedly installed on the top of the flange plate by bolts, an inner cylinder is rotatably connected to the inner wall of the kettle body, a first power mechanism for driving the inner cylinder to rotate is provided on the kettle body, a plurality of feeding ports extending into the inner cylinder are provided on the top edge of the sealing cover, a plurality of stirring shafts uniformly distributed around the circumference of the inner cylinder axis are rotatably connected to the top of the sealing cover, a plurality of stirring shafts are provided with mutually staggered stirring blades, a second power mechanism for driving the stirring shaft to rotate is provided on the top of the sealing cover, the stirring shaft and the inner cylinder rotate in opposite directions, a discharging hopper is provided at the bottom center of the kettle body, a discharging port with a valve is provided at the bottom of the inner cylinder, the discharging port is rotatably connected to the discharging hopper through a bearing, scrapers are detachably installed on both sides of the inner wall of the flange plate, and the scrapers are in contact with the inner wall of the inner cylinder.

[0005] Particularly, slots are arranged on both sides of the inner wall of the flange plate, the scrapers are inserted into the slots, a connecting plate is arranged on the top of the scrapers, and the connecting plate is fixed to the top of the flange plate by bolts.

[0006] Particularly, a plurality of sliding rings are arranged on the outer wall of the inner cylinder from top to bottom, a plurality of sliding grooves corresponding to the sliding rings are arranged on the inner wall of the kettle body, and the sliding rings are slidably arranged in the sliding grooves.

[0007] Particularly, a circle of mounting blocks is arranged at the bottom of the inner cylinder, a circle of supporting blocks is arranged at the bottom of the kettle body, a plurality of rollers are arranged at the bottom of the mounting blocks, wheel grooves are arranged at the top of the supporting blocks, and the rollers roll in the wheel grooves.

[0008] In particular, the first power mechanism includes a first gear arranged on the outside of the mounting block, an opening corresponding to the first gear is provided at the lower part of one side of the kettle body, a motor seat is provided on one side of the kettle body and is located above the opening, a rotating shaft is rotatably connected to the bottom of the motor seat adjacent to one side of the kettle body, a second gear is provided at the bottom of the rotating shaft, one side of the second gear passes through the opening and engages with the first gear, a first motor is provided on the top of the motor seat, and a third gear meshing with the second gear is provided after the main shaft of the first motor passes through the motor seat.

[0009] In particular, the second power mechanism includes a protective cover and a second motor. The protective cover is fixed to the center of the top of the cover. The top of the stirring shaft passes through the cover and is rotatably connected to the top of the protective cover. A fourth gear is provided at the top of the stirring shaft. The second motor is installed on the top of the protective cover. The main shaft of the second motor passes through the protective cover and is provided with a fifth gear meshing with the fourth gear.

[0010] The beneficial effects of the utility model are:

[0011] 1. The utility model provides an inner cylinder, a first power mechanism, a stirring shaft, stirring blades, and a second power mechanism. The inner cylinder and the stirring shaft rotate in opposite directions. Multiple stirring shafts are provided. The relative rotation of the inner cylinder and the stirring shaft can create a more complex flow pattern, including shearing, convection, and tumbling. These dynamic flows help to break up material agglomerations and promote mutual penetration and uniform distribution among components. The rotation in opposite directions can effectively reduce the dead angle area in the inner cylinder, ensure that all materials are fully involved in the mixing process, and improve the mixing effect.

[0012] 2. The utility model provides a detachable scraper so that the inner wall of the inner cylinder can be continuously scraped when the inner cylinder rotates, thereby preventing the material from adhering to the inner wall of the inner cylinder and affecting the mixing quality of the materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 for Figure 1 The enlarged schematic diagram at A in the middle;

[0015] Figure 3 for Figure 1 The enlarged schematic diagram of point B in the middle;

[0016] Figure 4 This is a schematic diagram of the connection between the scraper and the flange plate of the utility model;

[0017] Figure 5 This is a schematic diagram of the positions of the fourth gear and the fifth gear of the utility model;

[0018] In the figure: 1- kettle body; 2- flange plate; 3- cover; 4- inner cylinder; 5- feed port; 6- stirring shaft; 7- stirring blade; 8- discharge hopper; 9- discharge port; 10- scraper; 11- slot; 12- connecting plate; 13- slide ring; 14- slide groove; 15- mounting block; 16- support block; 17- roller; 18- wheel groove; 19- first gear; 20- opening; 21- motor seat; 22- rotating shaft; 23- second gear; 24- first motor; 25- third gear; 26- protective cover; 27- second motor; 28- fourth gear; 29- fifth gear;

[0019] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0021] like Figure 1-Figure 5 As shown, a mixing and stirring kettle for preparing solid preparations comprises a kettle body 1, a flange plate 2 is provided on the top of the kettle body 1, a sealing cover 3 is fixedly installed on the top of the flange plate 2 by bolts, an inner cylinder 4 is rotatably connected to the inner wall of the kettle body 1, a first power mechanism for driving the inner cylinder 4 to rotate is provided on the kettle body 1, a plurality of sliding rings 13 are provided on the outer wall of the inner cylinder 4 from top to bottom, a plurality of sliding grooves 14 corresponding to the sliding rings 13 are provided on the inner wall of the kettle body 1, the sliding rings 13 are slidably arranged in the sliding grooves 14, a circle of mounting blocks 15 are provided at the bottom of the inner cylinder 4, a circle of supporting blocks 16 are provided at the bottom of the kettle body 1, a plurality of rollers 17 are installed at the bottom of the mounting block 15, and a wheel groove is provided at the top of the supporting block 16 18, the roller 17 is rotatably arranged in the wheel groove 18, the first power mechanism includes a first gear 19 arranged on the outside of the mounting block 15, an opening 20 corresponding to the first gear 19 is arranged at the lower part of one side of the kettle body 1, a motor seat 21 located above the opening 20 is arranged on one side of the kettle body 1, a rotating shaft 22 is rotatably connected to the bottom of the motor seat 21 adjacent to one side of the kettle body 1, a second gear 23 is arranged at the bottom of the rotating shaft 22, one side of the second gear 23 passes through the opening 20 and meshes with the first gear 19, a first motor 24 is arranged on the top of the motor seat 21, and a third gear 25 meshing with the second gear 23 is arranged after the main shaft of the first motor 24 passes through the motor seat 21.

[0022] The top of the cover 3 is rotatably connected to a plurality of stirring shafts 6 uniformly distributed around the axis of the inner cylinder 4, and a plurality of stirring shafts 6 are provided with stirring blades 7 that are staggered with each other. The top of the cover 3 is provided with a second power mechanism that drives the stirring shaft 6 to rotate, and the second power mechanism includes a protective cover 26 and a second motor 27. The protective cover 26 is fixedly connected to the center of the top of the cover 3, and the top of the stirring shaft 6 passes through the cover 3 and is rotatably connected to the top inside the protective cover 26. A fourth gear 28 is provided at the top end of the stirring shaft 6, and the second motor 27 is installed on the top of the protective cover 26. The main shaft of the second motor 27 passes through the protective cover 26 and is provided with a fifth gear 29 that meshes with the fourth gear 28.

[0023] A plurality of stirring shafts 6 are provided, so that during stirring, the inner tube 4 is divided into a plurality of stirring zones, and the stirring is more complete.

[0024] The stirring shaft 6 and the inner cylinder 4 rotate in opposite directions. The relative rotation of the inner cylinder 4 and the stirring shaft 6 can create more complex flow patterns, including shear, convection and tumbling. These dynamic flows help to break up material agglomerations and promote mutual penetration and uniform distribution among the components. The rotation in opposite directions can effectively reduce the dead angle area in the inner cylinder, ensure that all materials are fully involved in the mixing process, and improve the mixing effect. When the stirring blades 7 move relative to the materials in the inner cylinder 4, additional shear force will be generated, which will help to disperse fine particles and crush large particles, thereby improving the fineness of the mixing. This design can speed up the circulation frequency and exchange rate of the materials, making the mixing process more efficient and reducing the time required to reach the ideal mixing state. The stirring blades 7 on the stirring shaft 6 push the materials, while the reverse rotation of the inner cylinder 4 has a pulling effect on the materials. This two-way force enhances the three-dimensional movement of the materials in the mixing space and improves the mixing uniformity.

[0025] A plurality of feed ports 5 extending into the inner tube 4 are arranged at the top edge of the cover 3, a discharge hopper 8 is arranged at the bottom center of the kettle body 1, and a discharge port 9 with a valve is arranged at the bottom of the inner tube 4, and the discharge port 9 is rotatably connected to the discharge hopper 8 through a bearing.

[0026] Scrapers 10 are detachably mounted on both sides of the inner wall of the flange plate 2. The scrapers 10 are in contact with the inner wall of the inner cylinder 4. Slots 11 are arranged on both sides of the inner wall of the flange plate 2. The scrapers 10 are inserted into the slots 11. A connecting plate 12 is arranged on the top of the scraper 10. The connecting plate 12 is fixed to the top of the flange plate 2 by bolts. The scrapers 10 are easy to disassemble and assemble, and are easy to clean. When the inner cylinder 4 rotates, the inner wall of the cylinder can be scraped to prevent the attached materials from affecting the mixing quality.

[0027] When the utility model is working, the material to be mixed is added into the inner cylinder 4 through the feed port 5, the first motor 24 and the second motor 27 are started, the inner cylinder 4 and the stirring shaft 6 rotate simultaneously, and the material begins to be stirred, and the scraper 10 scrapes the inner wall of the inner cylinder 4 during the stirring process, and after the mixing is completed, it can be discharged through the discharge port 9 and the discharge hopper 8, and the stirring shaft 6 and the stirring blade 7 can be cleaned after the cover 3 is removed, and then the scraper 10 can be directly removed from the flange plate 2. The utility model stirs the material fully, has a good mixing effect, and is easy to use.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] 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 at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In the present invention, 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 one; it can be a mechanical connection, an electrical connection, or communication with each other; 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A mixing and stirring kettle for preparing solid preparations, comprising a kettle body (1), characterized in that: A flange plate (2) is provided on the top of the kettle body (1), a sealing cover (3) is fixedly installed on the top of the flange plate (2) by bolts, an inner cylinder (4) is rotatably connected to the inner wall of the kettle body (1), a first power mechanism for driving the inner cylinder (4) to rotate is provided on the kettle body (1), a plurality of feed ports (5) extending into the inner cylinder (4) are provided on the top edge of the sealing cover (3), a plurality of stirring shafts (6) evenly distributed around the axis of the inner cylinder (4) are rotatably connected to the top of the sealing cover (3), and the plurality of stirring shafts (6) are provided with corresponding The stirring blades (7) are interlaced with each other. A second power mechanism for driving the stirring shaft (6) to rotate is arranged on the top of the cover (3). The stirring shaft (6) and the inner cylinder (4) rotate in opposite directions. A discharge hopper (8) is arranged at the center of the bottom of the kettle body (1). A discharge port (9) with a valve is arranged at the bottom of the inner cylinder (4). The discharge port (9) is rotatably connected to the discharge hopper (8) through a bearing. Scrapers (10) are detachably installed on both sides of the inner wall of the flange plate (2). The scrapers (10) are in contact with the inner wall of the inner cylinder (4).

2. A mixing and stirring kettle for preparing a solid preparation according to claim 1, characterized in that: Slots (11) are provided on both sides of the inner wall of the flange plate (2), the scraper (10) is inserted into the slots (11), a connecting plate (12) is provided on the top of the scraper (10), and the connecting plate (12) is fixed to the top of the flange plate (2) by bolts.

3. The mixing and stirring kettle for preparing a solid preparation according to claim 1, characterized in that: The outer wall of the inner cylinder (4) is provided with a plurality of sliding rings (13) from top to bottom, and the inner wall of the kettle body (1) is provided with a plurality of sliding grooves (14) corresponding to the sliding rings (13), and the sliding rings (13) are slidably arranged in the sliding grooves (14).

4. The mixing and stirring kettle for preparing a solid preparation according to claim 1, characterized in that: A circle of mounting blocks (15) is arranged at the bottom of the inner cylinder (4), a circle of supporting blocks (16) is arranged at the bottom of the kettle body (1), a plurality of rollers (17) are arranged at the bottom of the mounting blocks (15), a wheel groove (18) is arranged at the top of the supporting blocks (16), and the rollers (17) are rotatably arranged in the wheel groove (18).

5. A mixing and stirring kettle for preparing a solid preparation according to claim 4, characterized in that: The first power mechanism comprises a first gear (19) arranged outside the mounting block (15); an opening (20) corresponding to the first gear (19) is arranged at the lower part of one side of the kettle body (1); a motor seat (21) located above the opening (20) is arranged on one side of the kettle body (1); a rotating shaft (22) is rotatably connected to the bottom of the motor seat (21) adjacent to one side of the kettle body (1); a second gear (23) is arranged at the bottom of the rotating shaft (22); one side of the second gear (23) passes through the opening (20) and meshes with the first gear (19); a first motor (24) is arranged on the top of the motor seat (21); a third gear (25) meshing with the second gear (23) is arranged after the main shaft of the first motor (24) passes through the motor seat (21).

6. The mixing and stirring kettle for preparing a solid preparation according to claim 1, characterized in that: The second power mechanism comprises a protective cover (26) and a second motor (27). The protective cover (26) is fixedly connected to the top center of the sealing cover (3). The top of the stirring shaft (6) passes through the sealing cover (3) and is rotatably connected to the top of the protective cover (26). The top end of the stirring shaft (6) is provided with a fourth gear (28). The second motor (27) is installed on the top of the protective cover (26). The main shaft of the second motor (27) passes through the protective cover (26) and is provided with a fifth gear (29) meshing with the fourth gear (28).

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