CN112758363A - Small screw shaft labyrinth seal device applied to sterile powder feeder - Google Patents
Small screw shaft labyrinth seal device applied to sterile powder feeder Download PDFInfo
- Publication number
- CN112758363A CN112758363A CN202011477249.3A CN202011477249A CN112758363A CN 112758363 A CN112758363 A CN 112758363A CN 202011477249 A CN202011477249 A CN 202011477249A CN 112758363 A CN112758363 A CN 112758363A
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- CN
- China
- Prior art keywords
- labyrinth seal
- small screw
- seal
- powder
- screw rod
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B1/04—Methods of, or means for, filling the material into the containers or receptacles
- B65B1/10—Methods of, or means for, filling the material into the containers or receptacles by rotary feeders
- B65B1/12—Methods of, or means for, filling the material into the containers or receptacles by rotary feeders of screw type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
- B01F27/906—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms with fixed axis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B65/00—Details peculiar to packaging machines and not otherwise provided for; Arrangements of such details
- B65B65/02—Driving gear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Screw Conveyors (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention provides a small screw rod shaft labyrinth seal device applied to an aseptic powder feeder, wherein a seal cavity of the seal device is arranged outside the upper parts of a transmission shaft and a small screw rod transmission shaft to ensure the seal of the two transmission shafts, an upper labyrinth seal is arranged below the lower part of the seal cavity, which is in contact with the small screw rod transmission shaft, a lower labyrinth seal is arranged below a stirring wing connecting seat, which is in contact with the small screw rod transmission shaft, and the lower labyrinth seal is positioned between the stirring wing connecting seat and the small screw rod connecting seat. According to the invention, the stirring fin connecting seat and the upper end transmission device are kept in aseptic sealing through the upper labyrinth seal, the small screw rod connecting rod and the stirring fin connecting seat and the upper end transmission device are kept in aseptic sealing through the lower labyrinth seal, and trace abrasion debris or oil stain and other pollution sources in a transmission device box are prevented from directly falling into medicinal powder through the upper labyrinth seal and the lower labyrinth seal, so that the medicinal powder is ensured to be filled in an environment meeting the national sanitary standard.
Description
Technical Field
The invention relates to a small screw shaft labyrinth seal device applied to an aseptic powder feeder, and belongs to the technical field of powder feeders.
Background
The sterile powder feeder is mainly applied to the medicine processing process and is used for conveying medicine powder. Because the product to be conveyed is in a powder shape, the aseptic operation during the conveying process must be ensured, and meanwhile, the impurity cannot be added during the conveying process, including the particles generated by friction during the movement process of a conveying device during the conveying process cannot enter the conveyed medicinal powder, because the medicinal powder requires that the doping of soluble particles cannot be more than 0.3 micron, the requirement is very strict.
The transmission shaft generates some scraps due to friction in the rotating process, and the scraps may not have any influence on general products, but is quite dangerous in the field of medicine processing, especially in the field of processing of powder injection medicines, because the powder injection medicines are input into the blood of a human body, and if fine particles enter the human body, life risks can be generated in the lung. Therefore, any situation where particulate contamination of the medicament is likely to occur must be avoided in the delivery apparatus for powdered medicaments.
The connecting part of the prior transmission structure, the transmission device and the medicine powder conveying device is provided with a sealing ring, so that the two parts are sealed and isolated, but the prior transmission structure has the following problems in practical application: 1. after pollutants in the mechanical transmission part are invaded from the sealing ring, the pollutants possibly enter the conveying device to pollute the medicines; 2. the powder particles in the conveying device are very small, the powder particles can invade from the sealing ring part to the mechanical transmission part to affect the mechanical transmission part, the powder in the part is polluted, and when the powder is invaded more and accumulated, the polluted powder in the part can invade the conveying device again to pollute the powder in the conveying device.
Disclosure of Invention
The invention provides a small screw shaft labyrinth seal device applied to an aseptic powder feeder, aiming at solving the technical problems of the seal device in the prior art mentioned in the background technology.
The invention provides a small screw rod shaft labyrinth seal device applied to an aseptic powder feeder, which comprises an upper labyrinth seal, a lower labyrinth seal and a seal cavity, wherein the seal cavity is arranged outside the upper parts of a transmission shaft and a small screw rod transmission shaft to ensure the seal of the two transmission shafts, the upper labyrinth seal is arranged below the lower part of the seal cavity, which is in contact with the small screw rod transmission shaft, the lower labyrinth seal is arranged below a stirring wing connecting seat, which is in contact with the small screw rod transmission shaft, and the lower labyrinth seal is positioned between the stirring wing connecting seat and the small screw rod connecting seat.
Preferably, the upper labyrinth seal is provided with an annular groove for receiving debris generated by the movement of the upper bearing.
Preferably, the lower labyrinth seal is provided with an annular groove for receiving dust generated by the movement of the lower bearing.
Preferably, an annular groove is formed below the lower labyrinth seal, and when powder intrudes upwards along a gap at the connecting part of the stirring fin and the small screw connecting rod, the powder can fall into the annular groove and does not further intrude upwards.
The small screw shaft labyrinth seal device applied to the sterile powder feeder has the beneficial effects that: the stirring wing connecting seat and the upper end transmission device are kept in aseptic sealing through the upper labyrinth seal, the small screw rod connecting rod, the stirring wing connecting seat and the upper end transmission device are kept in aseptic sealing through the lower labyrinth seal, and trace abrasion debris or oil stain and other pollution sources in the transmission device box are prevented from directly falling into the medicinal powder through the upper labyrinth seal and the lower labyrinth seal, so that the medicinal powder is filled in the environment meeting the national sanitary standard.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic structural view of a small screw shaft labyrinth seal device applied to an aseptic powder feeder according to the present invention;
FIG. 2 is an enlarged view of a portion of the upper and lower labyrinth seals;
the device comprises a corrugated pipe coupler 1, an upper labyrinth seal 2, a powder cylinder 3, a lower labyrinth seal 4, a stirring fin 5, a screw rod quick connection 6, a small screw rod 7, a powder feeding seal 8, a stirring fin connecting seat 9, a small screw rod connecting rod 10, a stirring fin motor 11, a sealing cavity 12, a transmission shaft 13, a small screw rod transmission shaft 14 and a small screw rod motor 15.
Detailed Description
The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings:
the first embodiment is as follows: the present embodiment is explained with reference to fig. 1-2. The small screw shaft labyrinth seal device applied to the sterile powder feeder comprises an upper labyrinth seal 2, a lower labyrinth seal 4 and a seal cavity 12, wherein the seal cavity 12 is arranged outside the upper parts of a transmission shaft 13 and a small screw transmission shaft 14 to ensure the seal of the two transmission shafts, the upper labyrinth seal 2 is arranged below the lower part of the seal cavity 12, which is in contact with the small screw transmission shaft 14, the lower labyrinth seal 4 is arranged below a stirring fin connecting seat 9, which is in contact with the small screw transmission shaft 14, and the lower labyrinth seal 4 is arranged between the stirring fin connecting seat 9 and the small screw connecting seat 10.
The annular groove of the upper labyrinth seal 2 arranged below the outer bearing is used for receiving scraps generated by the movement of the bearing, and the annular groove of the lower labyrinth seal 4 arranged below the inner bearing is used for receiving scraps generated by the movement of the bearing. The position that stirring wing 5 and little screw rod connecting rod 10 meet sets up the annular groove below the labyrinth 4 down, and when the powder upwards invaded along the gap of stirring wing 5 and little screw rod connecting rod 10 junction, can fall into this annular groove in, no longer continues upwards invasion.
The working principle of the small screw shaft labyrinth seal device applied to the sterile powder feeder is as follows:
aseptic powder feeder in practical application in-process, after the powder medicine partial shipment of every batch was accomplished, the partial shipment structure of this equipment, promptly: all structures that come into contact with the powder must be cleaned and then assembled and used.
The partial shipment device is the structure of "axle axis", the structure of axle sleeve axle, promptly: the powder medicine is conveyed to the medicine powder bin and is maintained at a certain height, and therefore the accuracy of split charging is guaranteed. There is a stirring structure in this powder cavity, and the drive structure of this structure passes through outside bearing and little screw partial shipment device driver part fixed connection, and little screw partial shipment device is coaxial with the stirring structure, and little screw partial shipment device passes through inside bearing fixed connection with the drive structure. In the practical application process, the bearing structure inevitably generates mechanical friction, and the mechanical friction generates a little tiny scraps which fall into the powder to pollute the medicine.
In the powder feeding device, a small screw motor 15 drives a small screw transmission shaft 14 to further drive a small screw 7 to rotate, a stirring wing motor 11 drives a transmission shaft 13 to further drive a stirring wing 5 to rotate, the rotation directions of the small screw 7 and the stirring wing 5 are opposite, namely the small screw sub-packaging device is coaxial with a stirring structure but the rotation directions are opposite, powder is ensured to be lifted, powder can conveniently and uniformly enter a medicine bottle below, powder in a powder cylinder 3 needs to be filled in a powder feeding manner under an aseptic environment, aseptic sealing is kept between a stirring wing connecting seat 9 and an upper end transmission device through an upper labyrinth seal 2, aseptic sealing is kept between the small screw connecting rod 10 and the stirring wing connecting seat 9 and the upper end transmission device through a lower labyrinth seal 4, and trace abrasion debris or oil stains and other pollution sources in a transmission device box are prevented from directly falling into the powder through the upper and lower labyrinth seals, so as to ensure that the medicinal powder is filled in the environment meeting the national sanitary standard.
The above-mentioned embodiments further explain the objects, technical solutions and advantages of the present invention in detail. It should be understood that the above-mentioned embodiments are only examples of the present invention, and are not intended to limit the present invention, and that the reasonable combination of the features described in the above-mentioned embodiments can be made, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The small screw shaft labyrinth seal device applied to the powder feeder is characterized by comprising an upper labyrinth seal (2), a lower labyrinth seal (4) and a seal cavity (12), wherein the seal cavity (12) is arranged outside the upper parts of a transmission shaft (13) and a small screw transmission shaft (14) to ensure the sealing of the two transmission shafts, the upper labyrinth seal (2) is arranged below the lower part of the seal cavity (12) in contact with the small screw transmission shaft (14), the lower labyrinth seal (4) is arranged below the stirring fin connecting seat (9) in contact with the small screw transmission shaft (14), and the lower labyrinth seal (4) is positioned between the stirring fin connecting seat (9) and a small screw connecting rod (10).
2. The small screw shaft labyrinth seal device applied to the powder feeder according to the claim 1 is characterized in that the upper labyrinth seal (2) is provided with an annular groove for receiving scraps generated by the movement of an upper bearing.
3. The small screw shaft labyrinth seal device applied to the powder feeder according to the claim 1 is characterized in that the lower labyrinth seal (4) is provided with an annular groove for receiving scraps generated by the movement of a lower bearing.
4. The small screw shaft labyrinth seal device applied to the powder feeder according to the claim 1 is characterized in that an annular groove is arranged below the lower labyrinth seal (4), and when powder intrudes upwards along a gap at the connecting part of the stirring fin (5) and the small screw connecting rod (10), the powder can fall into the annular groove and does not further intrude upwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011477249.3A CN112758363A (en) | 2020-12-15 | 2020-12-15 | Small screw shaft labyrinth seal device applied to sterile powder feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011477249.3A CN112758363A (en) | 2020-12-15 | 2020-12-15 | Small screw shaft labyrinth seal device applied to sterile powder feeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112758363A true CN112758363A (en) | 2021-05-07 |
Family
ID=75693850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011477249.3A Pending CN112758363A (en) | 2020-12-15 | 2020-12-15 | Small screw shaft labyrinth seal device applied to sterile powder feeder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112758363A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030111135A1 (en) * | 2001-12-18 | 2003-06-19 | Societe De Prospection Et D'inventions Techniques Spit | Connector for a compressed-gas canister and a fastening appliance |
| JP3126097U (en) * | 2002-08-30 | 2006-10-12 | アクチボラゲット エス ケイ エフ | Bearing housing |
| CN203865020U (en) * | 2014-05-23 | 2014-10-08 | 上海华东制药机械有限公司 | Hoisting screw mechanism used for subpackage machine |
| CN205675266U (en) * | 2016-06-08 | 2016-11-09 | 深圳立健药业有限公司 | A kind of screw agitator device of racking machine |
| CN205841775U (en) * | 2016-07-27 | 2016-12-28 | 苏州东菱科技有限公司 | The high-low pressure sealing device of high-speed rotating shaft |
| CN209781675U (en) * | 2019-01-27 | 2019-12-13 | 中石化石油工程技术服务有限公司 | Single-bearing bidirectional combined sealing device |
| CN209796642U (en) * | 2019-04-30 | 2019-12-17 | 河北豪尔洁环保科技有限公司 | Double-sealing carrier roller |
-
2020
- 2020-12-15 CN CN202011477249.3A patent/CN112758363A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030111135A1 (en) * | 2001-12-18 | 2003-06-19 | Societe De Prospection Et D'inventions Techniques Spit | Connector for a compressed-gas canister and a fastening appliance |
| JP3126097U (en) * | 2002-08-30 | 2006-10-12 | アクチボラゲット エス ケイ エフ | Bearing housing |
| CN203865020U (en) * | 2014-05-23 | 2014-10-08 | 上海华东制药机械有限公司 | Hoisting screw mechanism used for subpackage machine |
| CN205675266U (en) * | 2016-06-08 | 2016-11-09 | 深圳立健药业有限公司 | A kind of screw agitator device of racking machine |
| CN205841775U (en) * | 2016-07-27 | 2016-12-28 | 苏州东菱科技有限公司 | The high-low pressure sealing device of high-speed rotating shaft |
| CN209781675U (en) * | 2019-01-27 | 2019-12-13 | 中石化石油工程技术服务有限公司 | Single-bearing bidirectional combined sealing device |
| CN209796642U (en) * | 2019-04-30 | 2019-12-17 | 河北豪尔洁环保科技有限公司 | Double-sealing carrier roller |
Non-Patent Citations (1)
| Title |
|---|
| 杨林英: "注射用灭菌粉末剂螺杆分装机的清洁验证", 《中国药师》 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210507 |