CN110203480B - Bottle washing spray needle - Google Patents
Bottle washing spray needle Download PDFInfo
- Publication number
- CN110203480B CN110203480B CN201910473906.8A CN201910473906A CN110203480B CN 110203480 B CN110203480 B CN 110203480B CN 201910473906 A CN201910473906 A CN 201910473906A CN 110203480 B CN110203480 B CN 110203480B
- Authority
- CN
- China
- Prior art keywords
- tube
- water spraying
- needle
- screw sleeve
- compression
- Prior art date
- 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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Links
- 239000007921 spray Substances 0.000 title claims abstract description 53
- 238000005406 washing Methods 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 134
- 238000005507 spraying Methods 0.000 claims abstract description 98
- 238000007906 compression Methods 0.000 claims abstract description 62
- 230000006835 compression Effects 0.000 claims abstract description 60
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000003814 drug Substances 0.000 description 20
- 238000004140 cleaning Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000005452 bending Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002923 metal particle Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/20—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought
- B08B9/28—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought the apparatus cleaning by splash, spray, or jet application, with or without soaking
- B08B9/34—Arrangements of conduits or nozzles
-
- 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
- B65B55/00—Preserving, protecting or purifying packages or package contents in association with packaging
- B65B55/24—Cleaning of, or removing dust from, containers, wrappers, or packaging ; Preventing of fouling
Abstract
The invention discloses a bottle washing spray needle which comprises a water spraying needle tube, a compression screw sleeve, a compression bushing and a screw sleeve seat, and is characterized in that the water spraying needle tube comprises a tube body and a tube seat at the bottom, the tube seat is arranged in an inner cavity of the screw sleeve seat, and the bottom end surface of the tube seat is matched with the wall spherical surface of the inner cavity of the screw sleeve seat to form a sealing area; the top of the water spraying needle tube is provided with a water spraying hole, and the inner cavity of the water spraying needle tube is communicated with the clean water pipe through a through hole formed in the bottom of the screw sleeve seat; the compression bushing is sleeved on the tube body of the needle tube, and the bottom end surface of the compression bushing is matched with the spherical surface of the upper end surface of the tube seat to form a first compression area; the compression screw sleeve is in threaded fit with the upper portion of the screw sleeve seat, and the bottom end face of the compression screw sleeve abuts against the upper end face of the compression bushing to form a second compression area. The thread part of the invention is outside the clean water area, thereby thoroughly solving the problem of secondary pollution.
Description
Technical Field
The invention relates to the field of medicine filling, in particular to the field of medicine bottle cleaning before medicine filling, and specifically relates to a bottle washing spray needle.
Background
Before filling, the medicine bottle needs to be cleaned. The conventional cleaning method is to insert a needle into a medicine bottle, spray high-pressure water at the top of the needle, and flush the inner wall of the medicine bottle.
The structure of the existing spray needle is shown in fig. 1, and comprises a water spray needle tube 1', a screw 2' and a screw seat 5'. The bottom of the water spraying needle tube 1 'is welded in the center of the screw 2'; the screw 2' is in threaded connection with the screw seat 5', and the middle is sealed by the sealing ring 3 '; the screw seat 5 'is welded on the clean water pipe 7'. The clean water pipe 7', the screw seat 5' and the water spraying needle tube 1 'are communicated, clean water sequentially passes through the clean water pipe 7', the screw seat 5 'and the water spraying needle tube 1', and finally is sprayed out from a water spraying hole 8 'at the top of the water spraying needle tube 1'. The needle with the structure has the following defects:
1. as is well known in the pharmaceutical field, the cleanliness requirements for pharmaceutical vials are high, and in particular for vials for filling medicaments to be directly injected into the human body, the requirements must be very clean and sterile. The screw 2 'and the screw seat 5' of the existing spray needle are in a clean water area, and the groove part of the screw increases the cleaning difficulty; in addition, the thread is made with certain roughness, so that the thread is difficult to clean. Meanwhile, during the assembly process of the screw 2 'and the screw seat 5', the pivoting of the screw thread causes friction of the internal and external screw threads, and tiny metal particles are likely to be generated. And the metal particles enter the clean water area to cause secondary pollution, thereby bringing potential safety hazard.
2. Because the water spraying needle tube 1' is welded on the screw 2', and simultaneously, the screw 2', the screw seat 5' and the clean water pipe 7' are rigidly connected, the bottom of the water spraying needle tube 1' cannot move or rotate, and can be inserted into a medicine bottle only after the pipe body is bent, so that the water spraying needle tube 1' has high material requirements, has certain elasticity, needs enough strength, is generally made of stainless steel materials, and has high cost. In addition, the water spraying needle tube 1' is usually aligned to the bottle mouth of the medicine bottle after being manually bent forcibly, and the needle is easily scrapped due to excessive bending, so that the service life of the needle is short.
3. The water spraying needle tube 1 'and the screw 2' are welded into a whole, and when the water spraying needle tube 1 'is damaged, the water spraying needle tube can only be replaced together with the screw 2', so that the use cost is further increased.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art and aims to provide an improved bottle washing spray needle.
In order to solve the problems, the invention adopts the following technical scheme: the bottle washing spray needle comprises a water spraying needle tube, a compression screw sleeve, a compression bushing and a screw sleeve seat, and is characterized in that the water spraying needle tube comprises a tube body and a tube seat at the bottom, the tube seat is arranged in an inner cavity of the screw sleeve seat, and the bottom end surface of the tube seat is matched with the wall spherical surface of the inner cavity of the screw sleeve seat to form a sealing area; the top of the water spraying needle tube is provided with a water spraying hole, and the inner cavity of the water spraying needle tube is communicated with the clean water pipe through a through hole formed in the bottom of the screw sleeve seat; the compression bushing is sleeved on the tube body of the needle tube, and the bottom end surface of the compression bushing is matched with the spherical surface of the upper end surface of the tube seat to form a first compression area; the compression screw sleeve is in threaded fit with the upper portion of the screw sleeve seat, and the bottom end face of the compression screw sleeve abuts against the upper end face of the compression bushing to form a second compression area.
According to the bottle washing spray needle, the inner cavity of the water spraying needle tube is communicated with the clean water pipe through the through hole formed in the bottom of the screw sleeve seat, and is not communicated with the threaded area at the upper part of the screw sleeve seat. Thus, the threaded part of the compression screw sleeve matched with the screw sleeve seat is outside the clean water area, and the problem of secondary pollution is thoroughly solved.
According to the bottle washing spray needle, the bottom end face of the spray needle tube is matched with the spherical surface of the screw sleeve seat, and the upper end face of the spray needle tube is matched with the spherical surface of the compression bushing, so that the spray needle tube can rotate around the tube seat within a certain angle range. When in use, the water spraying needle tube is only required to be rotated, or the water spraying needle tube is assisted by small-angle bending to be inserted into the medicine bottle. Therefore, the material requirement on the water spraying needle tube is not high, and the material with low equivalent lattice of plastic parts can be adopted, and the manufacturing cost of the product is reduced through one-time injection molding.
According to the bottle washing spray needle, the water spraying needle tube is detachably arranged in the inner cavity of the screw sleeve seat through the compression screw sleeve and the compression bushing, when the water spraying needle tube is damaged, only the part is needed to be replaced independently, and other parts can still be used continuously, so that the use and maintenance cost is reduced.
As an improvement of the invention, the water spraying hole arranged at the top of the water spraying needle tube comprises a central water spraying hole and peripheral oblique water spraying holes. The central water spraying hole is a straight hole and is directly sprayed to the bottom of the medicine bottle; the peripheral oblique water spraying holes are sprayed to the side wall of the medicine bottle close to the bottom, so that the cleaning capability can be improved.
As a further improvement of the invention, the number of the oblique water sprays Kong Yunbu is 4-6.
As a further improvement of the invention, the included angle between the inclined water spraying hole and the central line of the water spraying needle tube is 30-60 degrees.
As a further improvement of the invention, the water spraying needle tube is also provided with an oblique middle water spraying hole. The middle water spraying hole sprays to the side wall of the medicine bottle to clean the medicine bottle in all directions, thereby further improving the cleaning capability.
As a still further improvement of the invention, the number of the middle waist water sprays Kong Yunbu is 4-6.
As a further improvement of the invention, the included angle between the middle water spraying hole and the central line of the water spraying needle tube is 30-60 degrees.
As a further improvement of the invention, the middle water spraying hole is arranged on the middle step surface of the water spraying needle tube.
As a still further improvement of the invention, the middle step surface is an arc surface or an inclined surface.
As a further improvement of the invention, the water spraying needle tube is a straight tube or a taper tube.
Drawings
The invention is further described below with reference to the drawings and examples.
Fig. 1 is a schematic diagram of the structure of a conventional bottle washing needle.
FIG. 2 is a schematic view of the structure of the bottle washing needle of the present invention.
FIG. 3 is a schematic view of the structure of the water jet needle tube of the present invention.
Fig. 4 is an enlarged top view of fig. 3.
FIG. 5 is a schematic view of another embodiment of the water jet needle cannula of the present invention.
Fig. 6 is an enlarged top view of fig. 5.
Fig. 7 is a schematic structural view of the compression sleeve of the present invention.
Fig. 8 is a schematic structural view of the screw insert of the present invention.
Fig. 9 is a schematic view of the structure of the compression bushing of the present invention.
In the figure, a 1' -water spraying needle tube, a 2' -screw, a 3' -sealing ring, a 4' -welding point, a 5' -screw seat, a 6' -welding point and a 7' clean water pipe are shown;
the device comprises a 1-water spraying needle tube, a 2-compression screw sleeve, a 3-compression bushing, a 4-screw sleeve seat, a 5-welding point, a 6-clean water pipe, a 7-spherical sealing area, an 8-first compression area and a 9-second compression area;
101-water spraying holes, 102-needle tube upper sections, 103-needle tube lower sections, 104-needle tube inner cavities, 105-upper end faces, 106-needle tube bases, 107-bottom end faces, 108-step faces, 109-middle water spraying holes, 110-central water spraying holes, 111-oblique water spraying holes and 112-central lines;
201-a central through hole, 202-a swivel head, 203-external threads;
301-a central through hole, 302-a bottom end face;
401-internal threads, 402-lumen, 403-bottom lumen wall, 404-spigot face, 405-through hole.
Detailed Description
Referring to fig. 1, the structure of the conventional bottle washing needle has been described above, and will not be described again.
Referring to fig. 2, the compression screw sleeve bottle washing spray needle of the present invention comprises a water spray needle tube 1, a compression screw sleeve 2, a compression bushing 3 and a screw sleeve seat 4.
Referring to fig. 3 and 4, the water jet needle tube 1 includes a tube body and a bottom tube seat 106. The tube holder 106 is disposed in the cavity 402 of the screw holder 4. The bottom end surface 107 of the tube seat is a spherical surface and is matched with the spherical surface of the inner cavity wall of the screw seat to form a sealing surface 7. The top of the water spraying needle tube is provided with a water spraying hole 101, and an inner cavity 104 of the water spraying needle tube is communicated with the clean water pipe 6 through a through hole 405 formed in the bottom of the screw sleeve seat. The upper end face 105 of the tube seat is spherical and is matched with the bottom end face of the compression bushing to form a first compression area 8.
In this embodiment, only one central water spraying hole is formed in the top of the water spraying needle tube 1.
On this basis, referring to fig. 5 and 6, the water spraying hole formed at the top of the water spraying needle tube 1 includes a central water spraying hole 110 and peripheral inclined water spraying holes 111. The central water spraying hole 110 is a straight hole and is directly sprayed to the bottom of the medicine bottle; the peripheral inclined water spraying holes 111 are sprayed to the side wall of the medicine bottle near the bottom, so that the cleaning ability can be improved.
The inclined water spraying holes 111 are uniformly distributed, and the number of the inclined water spraying holes is 4-6. The included angle between the inclined water spraying hole 111 and the central line 112 of the water spraying needle tube is 30-60 degrees.
Further, the pipe body of the water spraying needle pipe 1 is divided into an upper section 102 and a lower section 103, and a step surface 108 is arranged between the two pipe bodies. The step surface 108 is also provided with an oblique middle water spray hole 109. The middle water spraying hole 109 sprays to the side wall of the medicine bottle to clean the medicine bottle in all directions, thereby further improving the cleaning capability.
The middle water spraying holes 109 are evenly distributed, and the number of the water spraying holes is 4-6. The included angle between the middle water spraying hole 109 and the water spraying needle tube central line 112 is 30-60 degrees.
The middle step surface 108 may be an arc surface or an inclined surface.
The water spraying needle tube 1 can be a straight tube or a taper tube. In the present embodiment, the latter structure is adopted. The cone angle of the taper pipe is not excessively large, and is preferably less than 2 degrees.
The water spraying needle tube 1 can be made of a material with certain elasticity, such as stainless steel or plastic.
Referring to fig. 7, the compression screw sleeve 2 has a central through hole 201 through which the water spray needle tube 1 passes. The sleeve body of the compression screw sleeve 2 is provided with external threads 203, and the head 202 of the compression screw sleeve 2 is a truncated hexagon.
Referring to fig. 8, the screw socket 4 has a straight cylindrical structure, and is provided with a socket 106 for accommodating the water spraying needle tube and an inner cavity 402 for compressing the bushing 3, wherein the bottom inner cavity wall 403 is spherical and is matched with the bottom end surface 107 of the socket to form the sealing surface 7. The upper part of the screw sleeve seat 4 is provided with an internal thread 401 matched with the external thread 203 of the compression screw sleeve 2. The center of the bottom of the screw sleeve seat 4 is provided with a through hole 405 for communicating the inner cavity 104 of the water spraying needle tube with the clean water tube 6. The outer edge of the bottom of the screw sleeve seat 4 is also provided with a spigot surface 404 matched with the clean water pipe 6.
Referring to fig. 9, the compression bushing 3 has a central through hole 301, and a bottom end surface 302 of the compression bushing 3 is spherical and cooperates with the upper end surface 105 of the water spraying needle tube base to form a first compression surface 8. The upper end surface of the compression bushing 3 abuts against the bottom end surface of the compression screw sleeve 2 to form a second compression area 9.
The bottle washing spray needle is assembled according to the following method:
the compression bushing 3 and the compression screw sleeve 2 are sequentially sleeved on the pipe body of the water spraying needle pipe 1; the tube seat 106 is then placed in the inner cavity 402 of the screw seat 4 together with the compression sleeve 3; the compression screw sleeve 2 is screwed to be connected with the screw sleeve seat 4, and meanwhile, the compression screw sleeve 2 compresses the tube seat 106 of the water spraying needle tube 1 and the inner cavity wall 403 of the screw sleeve seat 4 through the compression bushing 3 to form a sealing area.
The bottle washing spray needle has the following beneficial effects:
1. according to the bottle washing spray needle, the inner cavity of the water spraying needle tube is communicated with the clean water pipe through the through hole formed in the bottom of the screw sleeve seat, and is not communicated with the threaded area at the upper part of the screw sleeve seat. Thus, the threaded part of the compression screw sleeve matched with the screw sleeve seat is outside the clean water area, and the problem of secondary pollution is thoroughly solved.
2. According to the bottle washing spray needle, the bottom end face of the spray needle tube is matched with the spherical surface of the screw sleeve seat, and the upper end face of the spray needle tube is matched with the spherical surface of the compression bushing, so that the spray needle tube can rotate around the tube seat within a certain angle range. When in use, the water spraying needle tube is only required to be rotated, or the water spraying needle tube is assisted by small-angle bending to be inserted into the medicine bottle. Therefore, the material requirement on the water spraying needle tube is not high, and the material with low equivalent lattice of plastic parts can be adopted, so that the manufacturing cost of the product is reduced.
3. According to the bottle washing spray needle, the water spraying needle tube is detachably arranged in the inner cavity of the screw sleeve seat through the compression screw sleeve and the compression bushing, when the water spraying needle tube is damaged, only the part is needed to be replaced independently, and other parts can still be used continuously, so that the use and maintenance cost is reduced.
4. The bottle washing spray needle, the central water spraying hole at the top of the water spraying needle tube, the peripheral inclined water spraying holes and the middle waist water spraying holes form omnibearing spray washing on the inner wall of the medicine bottle, so that the washing degree is greatly improved.
It should be understood that: the above embodiments are merely illustrative of the present invention, not limiting, and any invention that does not fall within the spirit and scope of the present invention falls within the scope of the present invention.
Claims (10)
1. The bottle washing spray needle comprises a water spraying needle tube, a compression screw sleeve, a compression bushing and a screw sleeve seat, and is characterized in that the water spraying needle tube comprises a tube body and a tube seat at the bottom, the tube seat is arranged in an inner cavity of the screw sleeve seat, and the bottom end surface of the tube seat is matched with the wall spherical surface of the inner cavity of the screw sleeve seat to form a sealing area; the top of the water spraying needle tube is provided with a water spraying hole, and the inner cavity of the water spraying needle tube is communicated with the clean water pipe through a through hole formed in the bottom of the screw sleeve seat; the compression bushing is sleeved on the tube body of the needle tube, and the bottom end surface of the compression bushing is matched with the spherical surface of the upper end surface of the tube seat to form a first compression area; the compression screw sleeve is in threaded fit with the upper portion of the screw sleeve seat, and the bottom end face of the compression screw sleeve abuts against the upper end face of the compression bushing to form a second compression area.
2. The bottle washing spray needle as claimed in claim 1, wherein the spray holes formed at the top of the spray needle tube comprise a central spray hole and peripheral oblique spray holes.
3. A bottle washing spray needle as claimed in claim 2, wherein the number of oblique water sprays Kong Yunbu is 4-6.
4. A bottle washing spray needle as claimed in claim 2, wherein the inclined water spray hole has an included angle of 30-60 degrees with the central line of the water spray needle tube.
5. The bottle washing spray needle as claimed in claim 1, wherein the water spray needle tube is also provided with an oblique middle water spray hole.
6. A bottle washing spray needle as claimed in claim 5, wherein the number of the middle water sprays Kong Yunbu is 4-6.
7. The bottle washing spray needle as claimed in claim 5, wherein the included angle between the middle water spraying hole and the central line of the water spraying needle tube is 30-60 degrees.
8. The bottle washing spray needle as claimed in claim 5, wherein the middle water spraying hole is formed on a middle step surface of the water spraying needle tube.
9. The bottle washing spray needle as claimed in claim 8, wherein the middle step surface is an arc surface or an inclined surface.
10. A bottle washing needle as claimed in any one of claims 1 to 9 wherein the water spraying needle tube is a straight tube or a conical tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910473906.8A CN110203480B (en) | 2019-06-02 | 2019-06-02 | Bottle washing spray needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910473906.8A CN110203480B (en) | 2019-06-02 | 2019-06-02 | Bottle washing spray needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110203480A CN110203480A (en) | 2019-09-06 |
| CN110203480B true CN110203480B (en) | 2024-03-22 |
Family
ID=67790226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910473906.8A Active CN110203480B (en) | 2019-06-02 | 2019-06-02 | Bottle washing spray needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110203480B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5009241A (en) * | 1986-12-29 | 1991-04-23 | Hideyuki Nishizawa | Apparatus for washing narrow neck bottles |
| CN2870995Y (en) * | 2005-08-23 | 2007-02-21 | 广州广富包装机械有限公司 | Flushing shower header of bottle washer |
| CN101653774A (en) * | 2008-08-19 | 2010-02-24 | 上海华东制药机械有限公司 | Needle head of bottle cleaning machine |
| CN202377252U (en) * | 2011-12-28 | 2012-08-15 | 楚天科技股份有限公司 | Spray needle frame component for bottle washing machine |
| CN202893758U (en) * | 2012-09-21 | 2013-04-24 | 长沙嘉华包装机械有限公司 | Spray needle head of bottle washing machine |
| CN203816827U (en) * | 2014-02-12 | 2014-09-10 | 合肥博玛轻工装备制造有限公司 | Injection needle component of bottle washing device in packaging machinery |
| CN203842900U (en) * | 2014-06-04 | 2014-09-24 | 浙江新亚迪制药机械有限公司 | Medicine bottle cleaning device |
| CN203991583U (en) * | 2014-05-29 | 2014-12-10 | 楚天科技股份有限公司 | Bottle washing machine nozzle needle assembly and bottle washing machine |
| CN210284851U (en) * | 2019-06-02 | 2020-04-10 | 严秉华 | Spray needle for washing bottle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4438450B2 (en) * | 2003-04-07 | 2010-03-24 | 株式会社デンソー | Piping joint device and assembly method thereof |
-
2019
- 2019-06-02 CN CN201910473906.8A patent/CN110203480B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5009241A (en) * | 1986-12-29 | 1991-04-23 | Hideyuki Nishizawa | Apparatus for washing narrow neck bottles |
| CN2870995Y (en) * | 2005-08-23 | 2007-02-21 | 广州广富包装机械有限公司 | Flushing shower header of bottle washer |
| CN101653774A (en) * | 2008-08-19 | 2010-02-24 | 上海华东制药机械有限公司 | Needle head of bottle cleaning machine |
| CN202377252U (en) * | 2011-12-28 | 2012-08-15 | 楚天科技股份有限公司 | Spray needle frame component for bottle washing machine |
| CN202893758U (en) * | 2012-09-21 | 2013-04-24 | 长沙嘉华包装机械有限公司 | Spray needle head of bottle washing machine |
| CN203816827U (en) * | 2014-02-12 | 2014-09-10 | 合肥博玛轻工装备制造有限公司 | Injection needle component of bottle washing device in packaging machinery |
| CN203991583U (en) * | 2014-05-29 | 2014-12-10 | 楚天科技股份有限公司 | Bottle washing machine nozzle needle assembly and bottle washing machine |
| CN203842900U (en) * | 2014-06-04 | 2014-09-24 | 浙江新亚迪制药机械有限公司 | Medicine bottle cleaning device |
| CN210284851U (en) * | 2019-06-02 | 2020-04-10 | 严秉华 | Spray needle for washing bottle |
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| Publication number | Publication date |
|---|---|
| CN110203480A (en) | 2019-09-06 |
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