A sterile mounting structure for a powder dispensing apparatus

Abstract

The utility model relates to powder medicine production equipment field discloses a sterile installation structure for powder split charging equipment, including stirring drive shaft, paddle connecting piece, lower powder screw drive shaft and lower powder screw body, the bottom of stirring drive shaft has the connection male head, the top of paddle connecting piece has the connection female head, has the clamping groove on the connection male head, has the clamping pin on the connection female head, the clamping pin is compatible with the clamping groove and both can be jointed, the bottom of lower powder screw drive shaft has first connecting piece, the top of lower powder screw body has second connecting piece, first connecting piece includes the insertion slot, second connecting piece includes the insertion head, the insertion head is compatible with the insertion slot and both can be inserted and cooperated. The utility model discloses through first connecting piece and second connecting piece and connection male head and connection female head, make between lower powder screw drive shaft and lower powder screw body and between stirring drive shaft and paddle connecting piece can be connected and fixed through simple insertion cooperation, and the dismounting efficiency is improved greatly.

Description

Technical Field

[0001] This utility model relates to the field of powdered pharmaceutical production equipment, and in particular to a sterile installation structure for powder dispensing equipment. Background Technology

[0002] Powder filling machines are core equipment in powdered pharmaceutical production lines. Existing powder filling machines include a filling mechanism and a powder feeding mechanism. The main function of the powder feeding mechanism is to transfer the powder raw materials temporarily stored in the powder hopper to the powder silo via a feeding device, and then the powder raw materials are sent to the filling mechanism via a conveying mechanism in the powder silo. Finally, the filling mechanism delivers the powder raw materials into the packaging bags of the pharmaceuticals according to the set amount.

[0003] In existing powder dispensing mechanisms, only the stirring blades and the powder-discharging screw body are in direct contact with the drug for extended periods. The powder-discharging screw body is mounted on the powder-discharging screw drive shaft, which is coaxial and fixedly connected to the stirring drive shaft. A blade connector is also installed around the stirring drive shaft for mounting and fixing the stirring blades (the powder-discharging screw drive shaft passes vertically through the blade connector). The stirring drive shaft is used to transmit power to the stirring blades and the powder-discharging screw body.

[0004] The installation and fixing of the above-mentioned components generally adopts the connection method of fastening bolts. This traditional fixing method has two major drawbacks: First, the bolt connection has tiny thread gaps and mounting holes, which can easily trap powder and form a hygienic dead corner that is difficult to clean thoroughly, posing a risk of microbial contamination in aseptic production; Second, bolt fixing requires the use of tools in a Class A clean area for installation and removal, which is not only cumbersome and time-consuming, but also prone to introducing particles or contamination due to tool operation, posing a threat to the aseptic environment.

[0005] Since the mixing blades, blade connectors, and powder discharge screw body need to be disassembled regularly for cleaning and sterilization, the traditional threaded connection method is more cumbersome and time-consuming when dealing with such frequent disassembly and assembly, which delays the normal production schedule, and therefore needs to be improved. Utility Model Content

[0006] To address the problems existing in the prior art, the bolted connections between the paddle connector and the stirring drive shaft, and between the powder feeding screw drive shaft and the powder feeding screw body, are cumbersome and time-consuming during frequent disassembly and cleaning / sterilization, delaying normal production progress. The purpose of this invention is to provide a sterile installation structure for powder dispensing equipment. By setting a first connector and a second connector that can interlock at opposite ends of the powder feeding screw drive shaft and the powder feeding screw body, and by setting a male connector at the end of the stirring drive shaft and a female connector on the paddle connector, the connection and fixation between the powder feeding screw drive shaft and the powder feeding screw body, and between the stirring drive shaft and the paddle connector, can be achieved through simple plug-in fitting, significantly improving disassembly and assembly efficiency.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows: An aseptic installation structure for a powder dispensing device includes a stirring drive shaft, a paddle connector, a powder dispensing screw drive shaft, and a powder dispensing screw body with their axes coincident. The powder dispensing screw drive shaft is located below the stirring drive shaft and the two are fixedly connected. The powder dispensing screw drive shaft passes through the paddle connector. A male connector is provided at the bottom of the stirring drive shaft, and a female connector is provided at the top of the paddle connector. The male connector has a groove, and the female connector has a locking pin. The locking pin and the groove are adapted to each other and can be engaged. A first connector is provided at the bottom of the powder dispensing screw drive shaft, and a second connector is provided at the top of the powder dispensing screw body. The first connector includes a insertion groove, and the second connector includes a plug connector. The plug connector and the insertion groove are adapted to each other and can be engaged.

[0008] The present invention is further configured such that: the inner diameter of the female connector is adapted to the outer diameter of the male connector, and when the male connector and the female connector are inserted and engaged, the locking pin enters the slot and engages with the slot.

[0009] The present invention is further configured such that: the slot includes an inlet section and a locking section, the length direction of the inlet section is vertical and the axial direction of the stirring drive shaft is vertical, the length direction of the locking section is perpendicular to the inlet section, and the end of the inlet section is connected to the locking section.

[0010] The present invention is further configured such that: the card slot further includes a limiting segment, the length direction of the limiting segment is the same as the length direction of the guiding segment, and the limiting segment and the guiding segment are respectively located at both ends of the locking segment, and the limiting segment and the locking segment are connected.

[0011] The present invention is further configured such that: the locking pin enters the slot from the inlet section, and the length of the limiting section is less than the length of the inlet section.

[0012] The present invention is further configured such that: the first connector further includes a biting head, and the second connector further includes a biting groove, wherein the biting head is embedded in the biting groove while the plug and the plug groove form a plug-in engagement.

[0013] The present invention is further configured to include a sleeve, which is sleeved on the powder-feeding screw drive shaft. The second connecting member also includes a sleeve portion, the diameter of which is equal to the diameter of the powder-feeding screw drive shaft. When the plug and the plug groove are inserted and engaged, the sleeve can slide up and down along the powder-feeding screw drive shaft and the sleeve portion.

[0014] The present invention is further configured such that: the second connector further includes a snap-fit ​​portion, the snap-fit ​​portion being located below the sleeve portion and the diameter of the snap-fit ​​portion being larger than the inner diameter of the sleeve.

[0015] The present invention is further configured such that the length of the sleeve is greater than the height between the bottom of the sleeve and the top surface of the plug.

[0016] The present invention is further configured such that the sleeve is made of a metal material.

[0017] In summary, the beneficial effects achieved by this utility model are as follows: (1) The male and female connectors are connected by a plug-in fitting method, and the male and female connectors are locked by a locking pin and a locking groove; at the same time, the first connector and the second connector can be engaged with each other by the plug-in fitting between the plug and the plug groove. The operation is simple and quick, and the mixing blade and the powder feeding screw body can be disassembled and assembled without any tools, which completely eliminates the threaded connection and thus eliminates the sanitary dead corners caused by it. (2) The male connector is directly set on the stirring drive shaft, and the female connector is directly set on the blade connector. The connection between the stirring drive shaft and the blade connector can be realized without adding any other extra structures. (3) The sleeve is used to limit the first connector and the second connector to prevent them from separating on their own. The sleeve's own weight is used to maintain the limiting effect of the sleeve on the first connector and the second connector. The structure is simple and reliable, and the operation is convenient and efficient. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the specification will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the structure of the stirring drive shaft and the connecting male head in this utility model; Figure 2 This is a schematic diagram of the structure of the blade connector and the connecting female head in this utility model; Figure 3 This is a schematic diagram of the structure of the male connector and the female connector in this utility model when they are plugged in and mated. Figure 4 This is a schematic diagram of the structure of the powder-feeding screw drive shaft and the powder-feeding screw body before installation in this utility model; Figure 5 This is a schematic diagram of the structure of the first connector and the second connector when they are engaged with each other in this utility model; Figure 6 This is a schematic diagram of the structure of the present invention when the sleeve is fitted around the first connector and the second connector; Figure 7 This is a schematic diagram of the combined state of the aseptic installation structure in this utility model.

[0020] In the diagram: 1. Stirring drive shaft; 11. Male connector; 111. Inlet section; 112. Locking section; 113. Limiting section; 2. Paddle connector; 21. Female connector; 211. Locking pin; 3. Powder discharge screw drive shaft; 31. First connector; 311. Insertion groove; 312. Engaging head; 4. Powder discharge screw body; 41. Second connector; 411. Insertion joint; 412. Engaging groove; 413. Sleeve; 414. Locking part; 5. Sleeve. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. For ease of explanation, the terms "vertical", "horizontal", "left", "right", "upper", "lower", "inner", "outer", "bottom", etc., used in this specification to indicate 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 this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0022] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] As attached Figure 1-7 As shown, an aseptic installation structure for a powder dispensing equipment includes a sleeve 5, a stirring drive shaft 1 with its axes aligned, a paddle connector 2, a powder feeding screw drive shaft 3, and a powder feeding screw body 4.

[0024] The impeller connector 2, stirring drive shaft 1, powder feeding screw body 4, and powder feeding screw drive shaft 3 are all existing structures. In the powder dispensing machine, all of these structures are vertically arranged and their axes coincide. The powder feeding screw drive shaft 3 is located below the stirring drive shaft 1 and the two are fixedly connected. The powder feeding screw drive shaft 3 vertically passes through the impeller connector 2. At least two stirring blades (not shown in the figure) are welded and fixed to the outer sidewall of the impeller connector 2. The stirring drive shaft 1 transmits power to the impeller connector 2 and the powder feeding screw drive shaft 3, and the powder feeding screw drive shaft 3 transmits power to the powder feeding screw body 4.

[0025] As attached Figure 1-3 As shown, the bottom end of the stirring drive shaft 1 is a male connector 11, and the top opening of the blade connector 2 is a female connector 21. The inner diameter of the female connector 21 is adapted to the outer diameter of the male connector 11, so that the male connector 11 and the female connector 21 can be plugged into each other.

[0026] The outer wall of the male connector 11 is symmetrically provided with two recessed slots, each of which includes an inlet section 111, a locking section 112, and a limiting section 113.

[0027] The length directions of both the inlet section 111 and the limiting section 113 are the same as the axis of the stirring drive shaft 1, and the length direction of the locking section 112 is perpendicular to the inlet section 111. The limiting section 113 and the inlet section 111 are located at the two ends of the locking section 112, and the top ends of both the limiting section 113 and the inlet section 111 are connected to the locking section 112. Moreover, the length of the limiting section 113 is less than the length of the inlet section 111.

[0028] Two protruding locking pins 211 are symmetrically arranged on the inner wall of the connecting female head 21. The locking pins 211 are adapted to the locking groove and can slide smoothly in the locking groove.

[0029] The bottom end of the guide section 111 of the slot extends directly to the bottom end of the male connector 11. Therefore, during the insertion and engagement of the male connector 11 and the female connector 21, the locking pin 211 can enter the slot from the bottom end of the guide section 111. When the locking pin 211 reaches the top of the guide section 111, the blade connector 2 is rotated horizontally, and the locking pin 211 enters the locking section 112. At this time, the locking pin 211 engages with the slot, thereby restricting the movement of the blade connector 2 relative to the stirring drive shaft 1 in the vertical direction.

[0030] As attached Figure 4-6 As shown, a first connector 31 is provided at the bottom of the powder feeding screw drive shaft 3, and a second connector 41 is provided at the top of the powder feeding screw body 4. The first connector 31 and the second connector 41 are compatible and can be plugged into each other.

[0031] Specifically, the first connector 31 has a T-shaped groove, which includes a insertion groove 311 and a snap-fit ​​head 312; the second connector 41 has a T-shaped protrusion, which includes a insertion head 411 and a snap-fit ​​groove 412. The insertion head 411 cannot pass through the gap between the two snap-fit ​​heads 312, so the insertion head 411 can only enter the insertion groove 311 horizontally, and at the same time as the insertion head 411 enters the insertion groove 311, the snap-fit ​​head 312 is also just inserted into the snap-fit ​​groove 412.

[0032] The bottom surface of the socket 311 and the top surface of the connector 411 are both horizontal. Therefore, when the top surface of the connector 411 and the bottom surface of the socket 311 are at the same height in the vertical direction, the connector 411 can be inserted into the socket 311 in the horizontal direction.

[0033] The sleeve 5 is fitted onto the screw drive shaft 3 of the powder feeder, and the sleeve 5 is used to prevent the connector 411 from coming out of the connector slot 311 on its own.

[0034] The second connector 41 also includes a sleeve portion 413 and a snap-fit ​​portion 414. Both the sleeve portion 413 and the snap-fit ​​portion 414 are cylindrical and their axes coincide with the axis of the powder lowering screw body 4. The sleeve portion 413 is located below the plug-in portion 411, and the snap-fit ​​portion 414 is located below the sleeve portion 413.

[0035] The diameter of the sleeve portion 413 is equal to the diameter of the powder-feeding screw drive shaft 3, and the inner diameter of the sleeve 5 is slightly larger than the outer diameter of the powder-feeding screw drive shaft 3. Therefore, when the connector 411 enters the connector groove 311, the sleeve 5 can slide up and down along the powder-feeding screw drive shaft 3 and the sleeve portion 413.

[0036] Furthermore, the diameter of the snap-fit ​​portion 414 is larger than the inner diameter of the sleeve 5, and the length of the sleeve 5 is greater than the height between the bottom of the sleeve portion 413 and the top surface of the connector 411. This ensures that when the sleeve 5 slides down to the point where its bottom end contacts the top of the snap-fit ​​portion 414, the snap-fit ​​portion 414 can prevent the sleeve 5 from sliding further down, and the sleeve 5 can completely cover the first connector 31 and the second connector 41.

[0037] In this utility model, the sleeve 5 is made of metal material and is relatively heavy. Therefore, the sleeve 5 can maintain the limiting effect of the sleeve 5 on the first connector 31 and the second connector 41 by its own weight.

[0038] The implementation principle of the above embodiments is as follows: When the paddle connector 2 and the powder feeding screw body 4 are to be installed on the powder dispensing machine after cleaning and sterilization, first adjust the posture of the paddle connector 2 so that the connecting female head 21 at the top of the paddle connector 2 is facing upwards, and then lift the paddle connector 2 upwards so that it passes through the powder feeding screw drive shaft 3. Then align the paddle connector 2 with the connecting male head 11 at the bottom of the stirring drive shaft 1. Continue to lift the paddle connector 2 so that the two locking pins 211 in the connecting female head 21 respectively enter the inlet section 111 of the two slots on the side wall of the connecting male head 11. Continue to lift the paddle connector 2 until the locking pins 211 reach the top of the inlet section 111, then rotate the paddle connector 2 horizontally, and the locking pins 211 enter the locking section 112 from the inlet section 111. Continue rotating until the locking pin 211 reaches the top of the limiting section 113, then release or pull the blade connector 2 vertically downwards, causing the locking pin 211 to enter the bottom of the limiting section 113. At this point, the locking pin 211 is completely engaged with the slot, and the blade connector 2 can rotate circumferentially under the drive of the stirring drive shaft 1. Under the action of the weight of the blade connector 2 and the stirring blade itself, the locking pin 211 cannot disengage from the limiting section 113, and the connection between the blade connector 2 and the stirring drive shaft 1 is stable. Then, the sleeve 5 is placed on the powder-feeding screw drive shaft 3 and lifted vertically upwards. Then, the powder-feeding screw body 4 and the second connector 41 are lifted vertically upwards, so that the top surface of the plug 411 is at the same height as the bottom surface of the plug groove 311 on the first connector 31. After that, the plug 411 is aligned with the plug groove 311 and inserted horizontally into the plug groove 311. After the connector 411 is fully inserted into the socket 311, the sleeve 5 is released. The sleeve 5 slides down above the locking part 414, completely covering the first connector 31 and the second connector 41, thus completing the installation between the powder-feeding screw drive shaft 3 and the powder-feeding screw body 4. At this time, the connector 411 is limited by the sleeve 5 and cannot be detached from the socket 311 on its own.

[0039] When it is necessary to disassemble the blade connector 2 and the powder discharge screw body 4, the operation is reversed: first, lift the sleeve 5 to release the limit, then pull the second connector 41 horizontally to make the plug 411 disengage from the plug groove 311. Then remove the sleeve 5, then lift the blade connector 2 so that the locking pin 211 moves from the limiting section 113 into the locking section 112. Then rotate the blade connector 2 horizontally so that the locking pin 211 moves from the locking section 112 into the guiding section 111. Finally, pull down the blade connector 2 to remove it from the stirring drive shaft 1.

[0040] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the present invention. Clearly, those skilled in the art can make various alterations and modifications to the present invention without departing from its spirit and scope. Thus, if such modifications and modifications fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include such modifications and modifications.

Claims

1. A sterile installation structure for a powder dispensing device, comprising a stirring drive shaft (1) with coincident axes, a paddle connector (2), a powder feeding screw drive shaft (3), and a powder feeding screw body (4), wherein the powder feeding screw drive shaft (3) is located below the stirring drive shaft (1) and the two are fixedly connected, and the powder feeding screw drive shaft (3) passes through the paddle connector (2), characterized in that, The bottom of the stirring drive shaft (1) is provided with a male connector (11), and the top of the blade connector (2) is provided with a female connector (21). The male connector (11) is provided with a slot, and the female connector (21) is provided with a pin (211). The pin (211) is adapted to the slot and the two can be engaged. The bottom of the powder feeding screw drive shaft (3) is provided with a first connector (31), and the top of the powder feeding screw body (4) is provided with a second connector (41). The first connector (31) includes a plug groove (311), and the second connector (41) includes a plug connector (411). The plug connector (411) is adapted to the plug groove (311) and the two can be engaged.

2. The aseptic mounting structure for powder dispensing equipment according to claim 1, characterized in that, The inner diameter of the female connector (21) is adapted to the outer diameter of the male connector (11). When the male connector (11) and the female connector (21) are inserted and engaged, the locking pin (211) enters the slot and engages with the slot.

3. The aseptic mounting structure for powder dispensing equipment according to claim 1 or 2, characterized in that, The slot includes an inlet section (111) and a locking section (112). The length direction of the inlet section (111) is vertical to the axis direction of the stirring drive shaft (1). The length direction of the locking section (112) is perpendicular to the inlet section (111). The end of the inlet section (111) is connected to the locking section (112).

4. The aseptic mounting structure for powder dispensing equipment according to claim 3, characterized in that, The slot also includes a limiting section (113), the length direction of the limiting section (113) is the same as the length direction of the guiding section (111), and the limiting section (113) and the guiding section (111) are located at the two ends of the locking section (112), and the limiting section (113) and the locking section (112) are connected.

5. The aseptic mounting structure for powder dispensing equipment according to claim 4, characterized in that, The locking pin (211) enters the slot from the inlet section (111), and the length of the limiting section (113) is less than the length of the inlet section (111).

6. The aseptic mounting structure for powder dispensing equipment according to claim 1, characterized in that, The first connector (31) further includes a biting head (312), and the second connector (41) further includes a biting groove (412). When the plug (411) and the plug groove (311) form a plug-in engagement, the biting head (312) is embedded in the biting groove (412).

7. The aseptic mounting structure for powder dispensing equipment according to claim 1, characterized in that, It also includes a sleeve (5), which is sleeved on the powder-feeding screw drive shaft (3). The second connector (41) also includes a sleeve part (413), the diameter of which is equal to the diameter of the powder-feeding screw drive shaft (3). When the plug (411) is inserted into the plug groove (311), the sleeve (5) can slide up and down along the powder-feeding screw drive shaft (3) and the sleeve part (413).

8. The aseptic mounting structure for powder dispensing equipment according to claim 7, characterized in that, The second connector (41) further includes a snap-fit ​​portion (414), which is located below the sleeve portion (413) and has a diameter greater than the inner diameter of the sleeve (5).

9. The aseptic mounting structure for powder dispensing equipment according to claim 7 or 8, characterized in that, The length of the sleeve (5) is greater than the height between the bottom of the sleeve (413) and the top surface of the plug (411).

10. The aseptic mounting structure for powder dispensing equipment according to claim 7 or 8, characterized in that, The sleeve (5) is made of metal.

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