Split charging screw head and split charging device

Abstract

According to the split charging screw head and the split charging device, a first mounting hole is formed in the top of a split charging screw of the split charging screw head, a rotating shaft is surrounded in the split charging screw head through a fixing hole in the top, the distance S is formed between the lower surface of the rotating shaft and the bottom face of the first mounting hole, S is larger than 0, and a foreign matter collecting area is formed in the space where the distance S is located. When the split charging screw rod is fastened and mounted, chips can fall into a foreign matter collecting area even if the chips are generated, and cannot fall into the medicine powder, so that the risk of pollution of the medicine powder is reduced. The split charging device comprises a split charging screw head, a mounting seat and a stock bin, a rotating shaft of the split charging screw head is rotationally connected to the mounting seat and used for split charging of materials in the stock bin, and the split charging screw head is connected with the mounting seat through the rotating shaft. A medicine powder containing clearance space is not formed between the outer wall, in direct contact with the medicine powder, of the split charging screw and the mounting base, and the dismounting, cleaning and maintaining period of the split charging screw needs to be longer.

Description

Technical Field

[0001] The invention relates to the technical field of aseptic powder packaging, in particular to a packaging screw head and a packaging device. Background Art

[0002] The filling screw is mainly used for screw-type quantitative filling of various powders. It is widely used in the filling of medical powders, such as the aseptic production of cephalosporins, penicillins and other antibiotics. Due to the differences in the physical properties of the powders and the production requirements of different filling volumes, it is necessary to select the appropriate screw for installation according to the formula before production.

[0003] Chinese patent announcement number CN203698678U discloses a screw filling head, which connects the rotating shaft to the filling screw for quantitative filling through a rotating shaft sleeve. The applicant found that there are the following technical problems in this technical solution: the screw is docked upward from the bottom and fixed with exposed fastening bolts. Contaminants during the installation process can fall into the powder and cause contamination. At the same time, the fastening bolts will also rub against the screw during filling, increasing the risk of pollutant generation. Because the rotating shaft sleeve is coated on the outer wall of the filling screw, the powder may also enter the gap between the screw and the mounting seat along the outer wall of the screw during operation. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a packaging screw head and a packaging device which reduce the risk of drug powder contamination and are easy to clean and maintain.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: A sub-packing screw head comprises a sub-packing screw and a rotating shaft connected to the sub-packing screw, wherein a first mounting hole is provided at the top of the sub-packing screw, the lower part of the rotating shaft is inserted into the first mounting hole, and a distance is provided between the lower surface of the rotating shaft and the bottom surface of the first mounting hole.

[0006] As a further improvement of the above technical solution: A second mounting hole is horizontally opened at the lower part of the rotating shaft, and a third mounting hole is horizontally opened on the outer peripheral wall of the upper part of the sub-assembly screw. The third mounting hole is arranged corresponding to the second mounting hole and is connected to the first mounting hole. The sub-assembly screw head also includes a locking piece, which is inserted into the second mounting hole to connect the rotating shaft and the sub-assembly screw.

[0007] The inner wall of the second mounting hole is provided with an internal thread, the outer peripheral wall of the locking member is provided with an external thread, and the internal thread and the external thread match each other.

[0008] A positioning groove is provided on the inner wall of the first mounting hole, and the positioning groove is arranged opposite to the third mounting hole. One end of the locking member is engaged in the positioning groove, and the other end is located in the second mounting hole.

[0009] The locking piece is a positioning pin.

[0010] As a general inventive concept, the present invention also provides a filling device, including the aforementioned filling screw head, a mounting seat and a silo, wherein the rotating shaft of the filling screw head is rotatably connected to the mounting seat and is used for filling materials in the silo.

[0011] As a further improvement of the above technical solution: A convex ring is provided at the top of the sub-assembly screw along the outer circumferential direction of the first mounting hole, and a countersunk hole is provided at the bottom of the mounting seat, and the countersunk hole and the convex ring are matched with each other in a concave-convex manner.

[0012] The inner diameter of the convex ring is d1, and the inner diameter of the first mounting hole is d2, satisfying d2<d1.

[0013] The rotating shaft includes a third matching portion, a second matching portion and a first matching portion, the diameters of which decrease from top to bottom. The first matching portion is inserted into the first mounting hole, the second matching portion is matched with the convex ring, and the third matching portion is matched with the inner hole of the mounting seat.

[0014] A clamping groove is provided on the inner hole wall of the mounting seat, and a slide rail is provided on the outer wall of the third matching portion, and the slide rail and the clamping groove match each other.

[0015] Compared with the prior art, the advantages of the present invention are: The dispensing screw head of the present invention has a first mounting hole at the top of the dispensing screw, and the rotating shaft is surrounded by the first mounting hole at the top, and there is a gap between the lower surface of the rotating shaft and the bottom surface of the first mounting hole, and the space where the gap is formed forms a foreign matter collection area. When the dispensing screw is fastened and installed, even if debris is generated, it will fall into the foreign matter collection area instead of falling into the medicine powder, thereby reducing the risk of medicine powder contamination.

[0016] The packing device of the present invention comprises the packing screw head of the present invention, a mounting seat and a silo, the rotating shaft of the packing screw head is rotatably connected to the mounting seat and is used to pack materials in the silo, the packing screw head is connected to the mounting seat via the rotating shaft, no clearance space for accommodating the powder is formed between the outer wall of the packing screw that is in direct contact with the powder and the mounting seat, and a raised annular structure is provided on the top of the packing screw. Compared with the prior art solution, the present invention can effectively reduce material residues, and pollutants are not easy to enter the silo to pollute the materials, and the interval period of disassembly, cleaning and maintenance is longer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the packing screw head of the present invention.

[0018] Figure 2 It is a partial cross-sectional view of the rotating shaft of the present invention.

[0019] Figure 3 It is a front view of the packing screw of the present invention.

[0020] Figure 4 It is a top view of the packing screw of the present invention.

[0021] Figure 5 It is a cross-sectional view of the packing screw of the present invention.

[0022] Figure 6 It is a structural schematic diagram of the packaging device of the present invention.

[0023] Figure 7 The present invention Figure 6 A partial enlarged view of point A in the middle.

[0024] The symbols in the figure represent: 1. Assembling screw; 11. First mounting hole; 111. Positioning groove; 12. Third mounting hole; 13. Convex ring; 2. Locking member; 3. Mounting seat; 31. Countersunk hole; 32. Slot; 4. Rotating shaft; 41. First matching part; 411. Second mounting hole; 42. Second matching part; 43. Third matching part; 431. Slide rail; 5. Bin; 6. Driving member. DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below. Unless otherwise specified, the instruments or materials used in the present invention are commercially available.

[0026] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “top”, “bottom”, “inside” and “outside” are 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. They do not indicate or imply 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 present invention.

[0027] 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 present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "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 or an electrical connection; 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 present invention can be understood according to specific circumstances.

[0029] like Figures 1 to 5 As shown, the packing screw head of this embodiment includes a packing screw 1 and a rotating shaft 4 connected to the packing screw 1. A first mounting hole 11 is provided at the top of the packing screw 1. The lower part of the rotating shaft 4 is inserted into the first mounting hole 11. There is a spacing S between the lower surface of the rotating shaft 4 and the bottom surface of the first mounting hole 11. The spacing S ranges from 0.5 mm to 5 mm. The space where the spacing S is located forms a foreign matter collection area. When the packing screw 1 is fastened and installed, even if debris is generated, it will fall into the foreign matter collection area instead of falling into the medicine powder, thereby reducing the risk of medicine powder contamination.

[0030] like Figure 1 , Figure 2 , Figure 5 As shown, a second mounting hole 411 is transversely opened at the lower part of the rotating shaft 4, and a third mounting hole 12 is transversely opened on the outer peripheral wall of the upper part of the dispensing screw 1. The third mounting hole 12 is arranged corresponding to the second mounting hole 411 and is connected to the first mounting hole 11. The dispensing screw head also includes a locking member 2, which is inserted into the second mounting hole 411 to connect the rotating shaft 4 and the dispensing screw 1. The locking member 2 of the present invention is a built-in type. When the locking member 2 is installed, no foreign matter will fall outside the dispensing screw 1, but stays inside the dispensing screw 1 to avoid drug powder contamination.

[0031] In this embodiment, even if some of the medicine powder adheres to the dispensing screw 1 through the third mounting hole 12, it will enter the foreign matter collection area between the dispensing screw 1 and the rotating shaft 4, reducing the risk of medicine powder contamination. Preferably, the height of the third mounting hole 12 on the outer wall side of the dispensing screw 1 is higher than the height on the inner wall side of the dispensing screw 1, so that when the medicine powder falls into the third mounting hole 12, it slides downward to the foreign matter collection area under the action of gravity.

[0032] In this embodiment, an inner wall of the second mounting hole 411 is provided with an internal thread, and an outer wall of the locking member 2 is provided with an external thread, and the internal thread and the external thread match each other.

[0033] The inner wall of the first mounting hole 11 is provided with a positioning groove 111, and the positioning groove 111 is arranged opposite to the third mounting hole 12. One end of the locking member 2 is engaged in the positioning groove 111, and the other end is located in the second mounting hole 411. The position of the locking member 2 is limited by the positioning groove 111 and the third mounting hole 12, thereby limiting the relative position of the rotating shaft 4 and the sub-assembly screw 1, which is conducive to the locking connection of the rotating shaft 4 and the sub-assembly screw 1.

[0034] In this embodiment, the locking member 2 is a fastening bolt. Preferably, the locking member 2 is provided with a cross-shaped groove or a straight-shaped groove on one side close to the third mounting hole 12 for easy tightening or loosening.

[0035] like Figure 6 and Figure 7 As shown, the dispensing device of this embodiment comprises a dispensing screw head, a mounting seat 3 and a silo 5, wherein a rotating shaft 4 of the dispensing screw head is rotatably connected to the mounting seat 3 and is used to dispense materials in the silo 5. In the dispensing device of this embodiment, no clearance space for accommodating the powder is formed between the screw outer wall of the dispensing screw 1 that is in direct contact with the powder and the mounting seat 3. Compared with the technical solution of forming a clearance space for accommodating the powder between the screw outer wall of the dispensing screw 1 and the mounting seat 3 in the prior art, the interval period for disassembly, assembly, cleaning and maintenance of the dispensing screw 1 of the present invention is longer.

[0036] like Figure 3 and Figure 5 As shown, a convex ring 13 is provided at the top of the dispensing screw 1 along the outer circumferential direction of the first mounting hole 11, and a countersunk hole 31 is provided at the bottom of the mounting seat 3, and the countersunk hole 31 and the convex ring 13 are matched in a concave-convex manner. The connection mode between the top of the dispensing screw 1 and the mounting seat 3 of the present invention is an inverted Z-shaped sealing connection, and a sealing structure is formed by the concave-convex matching, which is conducive to preventing the powder from entering the inside of the dispensing screw 1.

[0037] like Figure 2 , Figure 7 As shown, the rotating shaft 4 includes a third matching portion 43, a second matching portion 42 and a first matching portion 41, the diameters of which decrease from top to bottom. The first matching portion 41 is inserted into the first mounting hole 11, the second matching portion 42 is matched and connected with the convex ring 13, and the third matching portion 43 is matched and connected with the inner hole of the mounting seat 3. The rotating shaft 4 is stepped. When the length of the first mounting hole 11 is constant, the size of the spacing S is determined according to the length value of the first matching portion 41. Alternatively, a control member is set on the lower surface of the rotating shaft 4 to control the size of the spacing S. The control member can be a cone of a specific height or a sphere of a specific diameter, or a combination of the two.

[0038] In this embodiment, the second matching portion 42 and the convex ring 13 are interference fit, the first matching portion 41 is inserted into the first mounting hole 11 and there is a gap between the outer wall of the first matching portion 41 and the inner wall of the first mounting hole 11. The interference fit makes the sealing connection between the rotating shaft 4 and the top of the sub-assembly screw 1 tighter. The setting of the gap is relative to the technical solution of interference fit between the rotating shaft 4 and the sub-assembly screw 1, and the installation of the rotating shaft 4 and the sub-assembly screw 1 is more convenient.

[0039] The inner diameter of the convex ring 13 is d1, and the inner diameter of the first mounting hole 11 is d2, satisfying d2<d1. Since the rotating shaft 4 is stepped, the convex ring 13 and the first mounting hole 11 with different inner diameters are arranged to facilitate the installation and cooperation with the rotating shaft 4.

[0040] like Figure 7 As shown, a slot 32 is provided on the inner hole wall of the mounting seat 3, and a slide rail 431 is provided on the outer wall of the third matching portion 43, and the slide rail 431 matches with the slot 32, thereby achieving the connection between the rotating shaft 4 and the mounting seat 3.

[0041] like Figure 7 As shown, the packaging device of the present invention also includes a silo 5 and a driving member 6. The silo 5 is located below the packaging screw head, and the driving member 6 is located above the packaging screw head. The driving member 6 is connected to the rotating shaft 4 and is used to drive the rotating shaft 4 to rotate. When the rotating shaft 4 rotates, it drives the packaging screw 1 to rotate together, thereby the packaging screw 1 packages the material in the silo 5.

[0042] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A packing screw head, comprising a packing screw (1) and a rotating shaft (4) connected to the packing screw (1), characterized in that: A first mounting hole (11) is formed at the top of the subassembly screw rod (1), and the lower portion of the rotating shaft (4) is inserted into the first mounting hole (11). There is a distance between the lower surface of the rotating shaft (4) and the bottom surface of the first mounting hole (11).

2. The packing screw head according to claim 1, characterized in that: A second mounting hole (411) is transversely opened at the lower portion of the rotating shaft (4), a third mounting hole (12) is transversely opened on the upper peripheral wall of the sub-assembling screw (1), the third mounting hole (12) being arranged corresponding to the second mounting hole (411) and being communicated with the first mounting hole (11), the sub-assembling screw head further comprising a locking member (2), the locking member (2) being inserted into the second mounting hole (411) and used for connecting the rotating shaft (4) and the sub-assembling screw (1).

3. The packing screw head according to claim 2, characterized in that: The inner wall of the second mounting hole (411) is provided with an internal thread, and the outer wall of the locking member (2) is provided with an external thread, and the internal thread and the external thread match each other.

4. The packing screw head according to claim 2, characterized in that: A positioning groove (111) is provided on the inner wall of the first mounting hole (11), the positioning groove (111) being arranged opposite to the third mounting hole (12), one end of the locking member (2) being engaged in the positioning groove (111) and the other end being located in the second mounting hole (411).

5. The packing screw head according to claim 2, characterized in that: The locking piece (2) is a positioning pin.

6. A packaging device, characterized in that: It comprises a filling screw head, a mounting seat (3) and a silo (5) according to any one of claims 1 to 5, wherein the rotating shaft (4) of the filling screw head is rotatably connected to the mounting seat (3) and is used for filling materials in the silo (5).

7. The packaging device according to claim 6, characterized in that: A convex ring (13) is provided at the top of the subassembly screw rod (1) along the outer circumferential direction of the first mounting hole (11), and a countersunk hole (31) is provided at the bottom of the mounting seat (3). The countersunk hole (31) and the convex ring (13) are matched in a concave-convex manner.

8. The packaging device according to claim 7, characterized in that: The inner diameter of the convex ring (13) is d1, and the inner diameter of the first mounting hole (11) is d2, satisfying d2<d1.

9. The packaging device according to claim 8, characterized in that: The rotating shaft (4) comprises a third matching portion (43), a second matching portion (42) and a first matching portion (41) whose diameters decrease in sequence from top to bottom; the first matching portion (41) is inserted into the first mounting hole (11); the second matching portion (42) is matched and connected to the convex ring (13); and the third matching portion (43) is matched and connected to the inner hole of the mounting seat (3).

10. The packaging device according to claim 9, characterized in that: A slot (32) is provided on the inner hole wall of the mounting seat (3), a slide rail (431) is provided on the outer wall of the third matching portion (43), and the slide rail (431) matches the slot (32).

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