Grinding device for pharmaceutical production

Abstract

The utility model provides a medicine production grinding device which comprises a pushing chamber, a spiral pushing rod is arranged in the pushing chamber, a movable grinding disc is installed at one end of the spiral pushing rod, a fixed grinding disc matched with the movable grinding disc is arranged on one side of the movable grinding disc, and three ring lugs are annularly installed at the end, close to the fixed grinding disc, of the pushing chamber at equal intervals. Two supporting lugs are symmetrically installed at the end, close to the fixed grinding disc, of the pushing cavity, a U-shaped frame is arranged on the side, away from the fixed grinding disc, of the movable grinding disc, screw rods are rotationally installed at the two ends of the U-shaped frame, one ends of the screw rods penetrate through notches in the supporting lugs and are in threaded connection with nuts, and the two screw rods are sleeved with butt joint lugs; a supporting ring is installed between the two butt joint lugs, the supporting ring, the ring lugs and the fixed grinding disc are connected through three screws, and the fixed grinding disc assembly and disassembly device has the advantages that the number of the screws limiting the relative positions of the fixed grinding disc and the pushing cavity is reduced, and the fixed grinding disc assembly and disassembly efficiency is improved.

Description

Technical Field

[0001] This utility model is a grinding device for pharmaceutical production, belonging to the field of pharmaceutical processing. Background Technology

[0002] In pharmaceutical manufacturing, the use of a moving grinding disc and a stationary grinding disc in conjunction is a common method. The moving grinding disc is typically driven by a motor or other drive device, while the stationary grinding disc remains stationary. When the pharmaceutical raw material enters the gap between the moving and stationary grinding discs, the rotation of the moving disc generates friction and shearing forces. These forces subject the raw material particles to compression, grinding, and shearing. As the moving grinding disc continues to rotate, the raw material is continuously broken down and refined, ultimately achieving the desired powder particle size. To facilitate the replacement of the stationary grinding disc, a common installation method is to use multiple screws to restrict the relative position of the stationary grinding disc and the push chamber. Because the stationary grinding disc experiences a reaction force during the grinding process, a large number of screws are needed to restrict its position relative to the push chamber, distributing the reaction force across multiple areas within the push chamber and thus increasing the efficiency of disassembly and assembly of the stationary grinding disc. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a grinding device for pharmaceutical production to solve the problems mentioned in the background art. This utility model reduces the number of screws that restrict the relative position of the fixed grinding disc and the pushing chamber, and improves the efficiency of the fixed grinding disc disassembly and assembly.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a grinding device for pharmaceutical production, comprising a pushing chamber, a hopper installed on the upper part of the outer surface of the pushing chamber, a spiral pushing rod provided inside the pushing chamber, both ends of the spiral pushing rod extending to the outer side of the pushing chamber, a movable grinding disc installed at one end of the spiral pushing rod, a fixed grinding disc cooperating with the movable grinding disc on one side of the movable grinding disc, three ring lugs equidistantly installed in a ring shape at one end of the pushing chamber near the fixed grinding disc, two support lugs symmetrically installed at one end of the pushing chamber near the fixed grinding disc, a U-shaped frame provided on the side of the movable grinding disc away from the fixed grinding disc, screws rotatably installed at both ends of the U-shaped frame, one end of the screw passing through a notch on the support lug and threadedly connected to a nut, two mating lugs sleeved on the two screws, the nuts located on the side of the mating lugs away from the support lugs, a support ring installed between the two mating lugs, the support ring sleeved on the pushing chamber, and the support ring, ring lugs, and fixed grinding disc connected by three screws.

[0005] Furthermore, one side of the support ring has three small holes that are equidistant from each other and match the ring lugs. One end of the screw passes through the small holes and the ring lugs and is threadedly connected to the fixed grinding disc.

[0006] Furthermore, the side of the support ring facing the grinding disc and the side of the grinding disc facing the support ring are each provided with a plurality of blind holes arranged in a ring at equal intervals, and a post is inserted between two aligned blind holes.

[0007] Furthermore, an internally threaded sleeve is installed at the center of the side of the U-shaped frame facing the moving grinding disc. The internally threaded sleeve is internally threaded to a threaded push rod. One end of the threaded push rod is in sliding contact with the end of the spiral push rod near the moving grinding disc, and a ring handle is installed at the end of the threaded push rod away from the spiral push rod.

[0008] Furthermore, a connecting plate is installed at the end of the spiral push rod away from the threaded push rod, and one side of the connecting plate has a plurality of fixing holes for inserting bolts at equal intervals in an annular shape.

[0009] Furthermore, a support is installed on the lower part of the outer surface of the push chamber, and a base is fixedly connected to the lower end of the support.

[0010] Furthermore, two clamps are fixedly connected to both ends of the U-shaped frame, a shaft is installed between the two clamps at one end of the U-shaped frame, and a ring is fixedly connected to one end of the screw, with the ring sleeved on the shaft.

[0011] The beneficial effects of this utility model are:

[0012] 1. Connect one end of the spiral push rod to the output shaft of the motor. The motor drives the spiral push rod to rotate in the push chamber. As a result, the medicine in the hopper falls into the push chamber and is pushed by the spiral push rod to the space between the fixed grinding disc and the moving grinding disc. The moving grinding disc rotates with the spiral push rod, thereby grinding the medicine that has entered between the fixed grinding disc and the moving grinding disc. Tighten the threaded push rod. Under the pressure of the threaded push rod, the distance between the moving grinding disc and the fixed grinding disc changes, so as to adjust the grinding fineness of the medicine as needed.

[0013] 2. After the screw passes through the support ring and the ring lug, it is threaded to the fixed grinding disc. Then, the screws at both ends of the U-shaped frame pass through the corresponding support lugs and mating lugs, and the nuts are tightened. At this time, the screws and nuts cooperate with each other, which restricts the position of the U-shaped frame on the one hand, and restricts the relative position of the support ring and the push chamber on the other hand. At this time, part of the reaction force of the fixed grinding disc during the grinding process is applied to the screw, thereby reducing the load on the screw, which helps to reduce the amount of screws used and improve the efficiency of the fixed grinding disc assembly and disassembly.

[0014] 3. Because there is a gap between the support ring and the ring lug, when the screw cannot be disassembled normally due to rust or other reasons, the screw can be cut off using the gap between the support ring and the ring lug, which makes it easy to replace the damaged grinding disc. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the structure of a grinding device for pharmaceutical production according to this utility model;

[0017] Figure 2 This is a perspective view of a grinding device for pharmaceutical production according to the present invention.

[0018] Figure 3 This is an assembly diagram of the moving grinding disc, U-shaped frame, and spiral pusher rod in a grinding device for pharmaceutical production according to this utility model;

[0019] Figure 4 This is an exploded structural diagram of the support ring, insert column, and fixed grinding disc in a grinding device for pharmaceutical production according to this utility model.

[0020] Figure 5 This is an exploded view of the support ring, insert column, and fixed grinding disc in a grinding device for pharmaceutical production according to this utility model.

[0021] In the diagram: 1-Pushing chamber, 2-Spiral push rod, 3-Connecting disc, 4-Hopper, 5-Support ring, 6-Pin post, 7-Fixed grinding disc, 8-Moving grinding disc, 9-U-shaped frame, 10-Internal threaded sleeve, 11-Ring handle, 12-Threaded push rod, 13-Screw, 14-Support lug, 15-Matching lug, 16-Base, 17-Support, 18-Nut, 19-Screw, 20-Small hole, 21-Blind hole. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Please see Figures 1-3This utility model provides a technical solution: a grinding device for pharmaceutical production, including a pushing chamber 1, a support 17 installed on the lower part of the outer surface of the pushing chamber 1, and a base 16 fixedly connected to the lower end of the support 17. The base 16 is installed at the desired position to restrict the position of the pushing chamber 1. A hopper 4 is installed on the upper part of the outer surface of the pushing chamber 1. A spiral pushing rod 2 is provided inside the pushing chamber 1, with both ends of the spiral pushing rod 2 extending to the outside of the pushing chamber 1. A moving grinding disc 8 is installed at one end of the spiral pushing rod 2, and a fixed grinding disc 7 that cooperates with the moving grinding disc 8 is provided on one side of the moving grinding disc 8. An internally threaded sleeve 10 is installed in the middle of the side of the U-shaped frame 9 facing the moving grinding disc 8. A threaded push rod 12 is internally threaded and connected to the internal thread of the internally threaded sleeve 10. One end of the threaded push rod 12 slides against the end of the spiral pushing rod 2 near the moving grinding disc 8. The threaded push rod 12 has a ring handle 11 installed at the end away from the spiral push rod 2, and a connecting plate 3 is installed at the end away from the threaded push rod 12. The connecting plate 3 has multiple fixing holes for inserting bolts at equal intervals on one side in a ring shape, so that one end of the spiral push rod 2 is connected to the output shaft of the motor. The motor drives the spiral push rod 2 to rotate in the pushing chamber 1, so that the medicine in the hopper 4 falls into the pushing chamber 1 and is pushed by the spiral push rod 2 to the space between the fixed grinding plate 7 and the moving grinding plate 8. The moving grinding plate 8 rotates with the spiral push rod 2, thereby grinding the medicine that has entered between the fixed grinding plate 7 and the moving grinding plate 8. Twisting the threaded push rod 12 changes the distance between the moving grinding plate 8 and the fixed grinding plate 7 under the pressure of the threaded push rod 12, so as to adjust the grinding fineness of the medicine as needed.

[0024] See Figures 1-5The push chamber 1 has three ring lugs installed in an annular shape at equal intervals near the fixed grinding disc 7. Two support lugs 14 are symmetrically installed at the same end of the push chamber 1 near the fixed grinding disc 7. A U-shaped frame 9 is provided on the side of the moving grinding disc 8 away from the fixed grinding disc 7. Two clamping lugs are fixed to both ends of the U-shaped frame 9. A shaft is installed between the two clamping lugs at one end of the U-shaped frame 9. A ring is fixed to one end of a screw 13, allowing the ring to fit onto the shaft, thus achieving a rotatable connection between the screw 13 and the end of the U-shaped frame 9. One end of the screw 13 passes through a notch in the support lug 14 and is threaded with a nut 18. Both screws 13 are fitted with mating lugs 15. The nut 18 is located on the side of the mating lug 15 away from the support lug 14. A support ring 5 is installed between the two mating lugs 15 and is fitted onto the push chamber 1. The support ring 5, the ring lugs, and the fixed grinding disc 7 are connected by three screws 19. One side of the support ring 5 has three ring lugs installed in an annular shape at equal intervals. The small hole 20, which mates with the ring lug, allows one end of the screw 19 to pass through the small hole 20 and the ring lug before being threaded onto the fixed grinding disc 7. The screw 19 then passes through the support ring 5 and the ring lug before being threaded onto the fixed grinding disc 7. Next, the screws 13 at both ends of the U-shaped frame 9 pass through the corresponding support lugs 14 and mating lugs 15, and are then screwed on with nuts 18. At this point, the screws 13 and nuts 18 cooperate, restricting the position of the U-shaped frame 9 on one hand, and restricting the relative position of the support ring 5 and the pushing chamber 1 on the other. During the grinding process, a portion of the reaction force experienced by the fixed grinding disc 7 acts on the screw 13, thereby reducing the load on the screw 19. This helps reduce the amount of screw 19 used and improves the efficiency of disassembling and assembling the fixed grinding disc 7. Because there is a gap between the support ring 5 and the ring lug, if the screw 19 cannot be disassembled normally due to corrosion or other reasons, the screw 19 can be cut off using the gap between the support ring 5 and the ring lug, facilitating the replacement of the damaged fixed grinding disc 7.

[0025] See Figures 1-5 Multiple blind holes 21 arranged in an annular pattern are provided on both the side of the support ring 5 facing the fixed grinding disc 7 and the side of the fixed grinding disc 7 facing the support ring 5. Insert pins 6 are inserted between two relatively aligned blind holes 21. At this time, the insert pins 6 and screws 19 cooperate with each other, so that the reaction force on the fixed grinding disc 7 is distributed in multiple places in the pushing chamber 1, thereby improving the stability of the structure.

[0026] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A mill for pharmaceutical production, comprising a push chamber (1), characterized in that: A hopper (4) is installed on the upper part of the outer surface of the pushing chamber (1). A spiral pushing rod (2) is provided inside the pushing chamber (1). Both ends of the spiral pushing rod (2) extend to the outside of the pushing chamber (1). A moving grinding disc (8) is installed at one end of the spiral pushing rod (2). A fixed grinding disc (7) that cooperates with the moving grinding disc (8) is provided on one side of the moving grinding disc (8). Three ring lugs are installed in a ring at equal intervals at one end of the pushing chamber (1) near the fixed grinding disc (7). Two support lugs (14) are symmetrically installed at one end of the pushing chamber (1) near the fixed grinding disc (7). The moving grinding disc (8) is away from the fixed grinding disc. A U-shaped frame (9) is provided on one side of the disc (7). Both ends of the U-shaped frame (9) are rotatably mounted with screws (13). One end of the screw (13) passes through the notch on the support ear (14) and is threaded with a nut (18). Both screws (13) are fitted with mating ears (15). The nut (18) is located on the side of the mating ear (15) away from the support ear (14). A support ring (5) is installed between the two mating ears (15). The support ring (5) is fitted on the pushing chamber (1). The support ring (5), the ring ear and the fixed grinding disc (7) are connected by three screws (19).

2. A mill for pharmaceutical production according to claim 1, characterized in that: The support ring (5) has three small holes (20) that are equally spaced on one side and match the ring lugs. One end of the screw (19) passes through the small holes (20) and the ring lugs and is threaded to the fixed grinding disc (7).

3. A mill for pharmaceutical production according to claim 2, characterized in that: The support ring (5) facing the fixed grinding plate (7) and the fixed grinding plate (7) facing the support ring (5) are provided with a plurality of blind holes (21) arranged in a ring at equal intervals. A plug (6) is inserted between two aligned blind holes (21).

4. The mill device for pharmaceutical production according to claim 1, characterized in that: An internal threaded sleeve (10) is installed in the middle of the side of the U-shaped frame (9) facing the moving grinding disc (8). The internal threaded sleeve (10) is internally threaded and connected to a threaded push rod (12). One end of the threaded push rod (12) is in sliding contact with the end of the spiral push rod (2) near the moving grinding disc (8). A ring handle (11) is installed at the end of the threaded push rod (12) away from the spiral push rod (2).

5. A mill for pharmaceutical production according to claim 4, characterized in that: The spiral push rod (2) is equipped with a connecting plate (3) at one end away from the threaded push rod (12). The connecting plate (3) has multiple fixing holes for inserting bolts on one side in an annular shape.

6. A mill for pharmaceutical production according to claim 1, characterized in that: A support (17) is installed on the lower part of the outer surface of the push chamber (1), and a base (16) is fixedly connected to the lower end of the support (17).

7. A pharmaceutical production mill according to claim 1, characterized in that: Two clamps are fixed at both ends of the U-shaped frame (9). A shaft is installed between the two clamps at one end of the U-shaped frame (9). A ring is fixed at one end of the screw (13). The ring is sleeved on the shaft.

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