CN115557682A - Ampoule bottle sealing device and method for volatile organic standard solution - Google Patents
Ampoule bottle sealing device and method for volatile organic standard solution Download PDFInfo
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- CN115557682A CN115557682A CN202211539797.3A CN202211539797A CN115557682A CN 115557682 A CN115557682 A CN 115557682A CN 202211539797 A CN202211539797 A CN 202211539797A CN 115557682 A CN115557682 A CN 115557682A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/18—Re-forming and sealing ampoules
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- Engineering & Computer Science (AREA)
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- Organic Chemistry (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
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Abstract
The invention discloses a volatile organic standard solution ampoule bottle sealing device and method, which relate to the technical field of ampoule bottle sealing and comprise the following steps: a frame body; the control switch is arranged on the frame body, and a controller is arranged in the frame body; the melting sealing cylinder is fixed in the frame body, and a rotating motor is fixed at the bottom axis position of the melting sealing cylinder; the melt sealing component is fixed inside the melt sealing cylinder; the cover plate assembly is placed on the upper end face of the melt sealing cylinder, and the space between the cover plate assembly and the melt sealing cylinder is in an unsealed state; according to the invention, a plurality of ampoule bottles can be sealed by melting through the sealing component, and the sealing cylinder can be closed through the cover plate component during sealing by melting, so that the danger of scalding in the sealing process is avoided.
Description
Technical Field
The invention relates to the technical field of ampoule bottle sealing, in particular to a volatile organic standard solution ampoule bottle sealing device and method.
Background
A standard substance is a substance or material that has been determined to have one or more sufficiently uniform characteristic values as a "gauge" in the analytical measurement industry, while a standard solution, as one of the standard substances, refers to a reagent solution having an accurately known concentration, a titrant commonly used in titration analysis. In other analytical methods, working curves or calculation standards are plotted against standard solutions, which are generally stored in ampoules (the translation of amplla latin) which are hard, sealable glass containers, which are commonly used for the storage of injectable drugs, vaccines, serum and the like. Need to seal it after its inside standard solution of placing, but current sealing device all is in the exposure environment when using, easily takes place the danger of scald, and need rotate ampoule when sealing by fusing, can lead to inside solution spill when its inside solution is too much, influences the sealing by fusing effect to current sealing by fusing device efficiency is low, is unfavorable for batch sealing by fusing.
Aiming at the problems, the invention provides a volatile organic standard solution ampoule bottle melt-sealing device to solve the problems.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: a voc standard solution ampoule fusion sealing apparatus comprising:
a frame body;
the control switch is arranged on the frame body, and a controller is arranged in the frame body;
the melt-sealing cylinder is fixed in the frame body, and a rotating motor is fixed at the bottom axis position of the melt-sealing cylinder;
the melt sealing component is fixed inside the melt sealing cylinder; and
and the cover plate component is placed on the upper end surface of the melt-sealing barrel, and an unsealed state is formed between the cover plate component and the melt-sealing barrel.
Further, preferably, the cover plate assembly includes:
a cover plate;
the rotating plate is rotatably arranged on the upper end face of the cover plate, and a plurality of bosses are fixed on the outer wall of the rotating plate;
a handle provided on the rotating plate;
the positioning column is eccentrically fixed on the lower end surface of the cover plate;
the pressing plates are arranged in a plurality, the number of the pressing plates is the same as that of the bosses, the pressing plates are hinged in the cover plate, the cover plate extends out of two ends of each pressing plate, and torsion springs are sleeved at the hinged positions of the pressing plates and the cover plate;
and the plugs are correspondingly arranged on the pressing plate and are rotatably arranged in the cover plate.
Further, preferably, the sealing component includes:
the fixed disc is fixed in the sealing cylinder by adopting a fixed strip, and a clamping assembly is fixed in the fixed disc;
the taking and placing assembly is detachably arranged on the fixed disc, a clamping assembly is rotatably arranged in the taking and placing assembly, and the clamping assembly in the fixed disc corresponds to the clamping assembly in the taking and placing assembly one by one;
the telescopic rod is fixed at the axial center of the upper end face of the fixed disc and is controlled by the control switch;
the positioning disc is fixed at the output end of the telescopic rod, and a positioning hole corresponding to the positioning column is formed in the positioning disc;
the flame-throwing heads are fixed on the circumference of the positioning plate and are consistent with the pressing plates in number;
and the driving gear is rotatably arranged on the lower end face of the fixed disc and is driven by the rotating motor.
Further, preferably, a plurality of placing grooves are formed in the fixed disc and used for detachably placing the taking and placing assembly, a plurality of connecting tables are fixed on the circumference of the outer wall of the fixed disc and correspond to the flame-throwing heads one to one, a rotating ring is rotatably arranged at the bottom of the connecting table, a clamping assembly is fixed on the inner wall of the rotating ring, a driven gear is fixed on the outer wall of the rotating ring, and the driven gear is meshed with the driving gear.
Further, preferably, the taking and placing assembly comprises:
the taking and placing ring is inserted in the placing groove, and a lifting ring is fixed on the upper end surface of the taking and placing ring, so that the taking and placing are convenient; and
and the fixed table is circumferentially fixed on the outer wall of the taking and placing ring and corresponds to the plurality of connecting tables.
Further, preferably, the clamping assembly includes:
the clamping ring positioned in the taking and placing assembly is rotatably arranged in the fixed table, and the clamping ring positioned in the fixed disc is fixed in the rotating ring; and
the clamping blocks are at least three and are arranged in the clamping ring in a sliding manner, and clamping springs are arranged between the clamping blocks and the clamping ring;
and the clamping force of the clamping component in the taking and placing component is greater than that of the clamping component in the fixed disk.
The use method of the ampoule bottle melt-sealing device for the volatile organic standard solution comprises the following steps:
s1, installing an ampoule bottle; placing the ampoule bottles into the clamping assemblies in the taking and placing assembly in sequence, and inserting the taking and placing assembly on the fixed disc to complete installation;
s2, preparing for melt sealing; the positioning column of the cover plate component is inserted on the positioning disc in a sliding mode, the cover plate component is pressed downwards, the plug enters the bottle opening of the ampoule bottle, the ampoule bottle is pressed downwards into the clamping component in the fixing disc, the ampoule bottle is located on the same plane, and then the flame-throwing head is adjusted to reach the fusion-sealing position through the telescopic rod;
s3, sealing by fusing; the ampoule bottle sealing device is characterized in that a driving gear is driven to rotate through a rotating motor, and the driving gear drives a driven gear meshed with the driving gear to rotate, so that the ampoule bottle is sealed in a rotating and melting mode;
s4, completing melt sealing; the ampoule bottle mouth cutting device comprises a rotary motor, a rotating plate, a boss, a pressing plate, a cover plate, a fuse and a flame-throwing head, wherein the rotary motor is stopped at first, the rotating plate is rotated again, the boss is extruded to press the pressing plate, the ampoule bottle mouth is clamped by the pressing plate through matching with a plug, then a cover plate slides upwards to cut the bottle mouth at the upper end of the ampoule bottle, the fuse and fire-throwing head is stopped after the cut is finished, and the ampoule bottle which is sealed by the fuse is taken out.
Compared with the prior art, the invention provides a volatile organic standard solution ampoule bottle melt-sealing device, which has the following beneficial effects:
according to the ampoule bottle sealing device, a plurality of ampoule bottles can be placed into the taking and placing assembly at the same time during sealing, so that the ampoule bottles are sealed at the same time, the sealing efficiency is greatly improved, the ampoule bottles can be positioned in a relatively closed space during sealing through the cover plate assembly, the danger of scalding is avoided, the ampoule bottles can be sealed through the plugs, and the solution is prevented from splashing out during rotation.
Drawings
FIG. 1 is a schematic overall view of a VOC standard solution ampoule fusion sealing apparatus;
FIG. 2 is a schematic view of a cover plate assembly of a VOC standard solution ampoule fusion sealing apparatus;
FIG. 3 is a schematic view of a sealing assembly of a VOC standard solution ampoule sealing apparatus;
FIG. 4 is an enlarged view of the point A in FIG. 3
In the figure: 1. a frame body; 2. a control switch; 3. fusing and sealing the cylinder; 4. a melt seal assembly; 5. a cover plate assembly; 6. an ampoule bottle; 51. a cover plate; 52. a rotating plate; 53. a handle; 54. a boss; 55. a positioning column; 56. a pressing plate; 57. a plug; 41. fixing the disc; 42. a fixing strip; 43. a picking and placing assembly; 44. a telescopic rod; 45. positioning a plate; 46. a flame projecting head; 47. a clamping assembly; 48. a driving gear; 49. a lifting ring; 411. a placement groove; 412. a connecting table; 413. a rotating ring; 414. a driven gear; 431. taking and placing the ring; 432. a fixed table; 471. a clamp ring; 472. and (4) clamping the block.
Detailed Description
Referring to fig. 1 to 4, the present invention provides a technical solution: a voc standard solution ampoule fusion sealing apparatus comprising:
a frame body 1;
the control switch 2 is installed on the frame body 1, and a controller is installed in the frame body 1;
the melt-sealing cylinder 3 is fixed in the frame body 1, and a rotating motor is fixed at the bottom axis position of the melt-sealing cylinder 3;
the melt sealing component 4 is fixed inside the melt sealing cylinder 3; and
and the cover plate component 5 is placed on the upper end face of the sealing cylinder 3, and the space between the cover plate component 5 and the sealing cylinder 3 is in an unsealed state.
That is, air flow is permitted between the cover plate assembly 5 and the sealing cylinder 3, so that sufficient air is available inside the sealing cylinder 3 to assist combustion.
In the present embodiment, the cover plate assembly 5 includes:
a cover plate 51;
a rotating plate 52 rotatably disposed on the upper end surface of the cover plate 51 and having a plurality of bosses 54 fixed to the outer wall thereof;
a handle 53 provided on the rotating plate 52;
a positioning column 55 eccentrically fixed to the lower end surface of the cover plate 51;
a plurality of pressing plates 56, which are the same as the bosses 54 in number and are hinged in the cover plate 51, wherein two ends of each pressing plate 56 extend out of the cover plate 51, and a torsion spring is sleeved at the hinged position of each pressing plate 56 and the cover plate 51; and
and the plugs 57 are arranged corresponding to the pressing plates 56 and are rotatably arranged in the cover plate 51.
It should be noted that when the boss 54 is not in contact with the pressing plate 56, the lower end of the pressing plate 56 is always away from the plug 57 through the torsion spring, so that the plug 57 can rotate conveniently, when clamping is required, the rotating plate 52 is rotated to enable the boss 54 to press the pressing plate 56, so that the lower end of the pressing plate 56 is close to the plug 57, the pressing plate 56 clamps the opening of the ampoule bottle 6 through matching with the plug 57, and then the cover plate 51 is slid upwards, so that the opening at the upper end of the ampoule bottle 6 is cut.
As a preferred embodiment, the sealing assembly 4 includes:
the fixed disc 41 is fixed in the sealing cylinder 3 by adopting a fixed strip 42, and a clamping component 47 is fixed in the fixed disc;
the taking and placing assembly 43 is detachably mounted on the fixed disc 41, a clamping assembly 47 is rotatably arranged in the taking and placing assembly 43, and the clamping assembly 47 in the fixed disc 41 corresponds to the clamping assembly 47 in the taking and placing assembly 43 one by one;
an extension rod 44 fixed at the axial center of the upper end surface of the fixed disk 41 and controlled by the control switch 2;
the positioning disc 45 is fixed at the output end of the telescopic rod 44, and a positioning hole corresponding to the positioning column 55 is formed in the positioning disc;
the fire-jet heads 46 are fixed on the circumference of the positioning plate 45, and the number of the fire-jet heads is consistent with that of the pressing plates 56; and a drive gear 48 rotatably provided on a lower end surface of the fixed disk 41 and driven by the rotating motor.
It should be noted that the number of the taking and placing assemblies 43 is at least two, and when one group of the taking and placing assemblies 43 performs the sealing operation in the sealing cylinder 3, the other group of the taking and placing assemblies 43 can mount the ampoule bottles 6, thereby greatly improving the working efficiency.
In a preferred embodiment, a plurality of placing slots 411 are formed in the fixed tray 41 for detachably placing the pick-and-place assembly 43, a plurality of connecting platforms 412 are fixed on the circumference of the outer wall of the fixed tray 41, the connecting platforms 412 correspond to the fire-jet heads 46 one by one, a rotating ring 413 is rotatably disposed at the bottom of the connecting platforms 412, a clamping assembly 47 is fixed on the inner wall of the rotating ring 413, a driven gear 414 is fixed on the outer wall of the rotating ring 413, and the driven gear 414 is engaged with the driving gear 48.
In a preferred embodiment, the pick-and-place assembly 43 includes:
the taking and placing ring 431 is inserted into the placing groove 411, and the lifting ring 49 is fixed on the upper end face of the taking and placing ring 431, so that the taking and placing are convenient; and
and a fixing stand 432 circumferentially fixed to an outer wall of the pick-and-place ring 431 and corresponding to the plurality of connection stands 412.
It should be noted that when the ampoule bottle 6 is placed in the pick-and-place assembly 43, it is not necessary to keep the ampoule bottle 6 on the same plane, and when the pick-and-place assembly 43 is placed on the fixing plate 41, the ampoule bottle 6 can be pressed by the cover plate assembly 5, so that the ampoule bottle 6 is on the same plane.
As a preferred embodiment, the clamping assembly 47 comprises:
the clamping ring 471 is arranged in the fixed table 432 in a rotating way, the clamping ring 471 in the taking and placing assembly 43 is arranged in the fixed disc 41 in a rotating way, and the clamping ring 471 in the fixed disc 41 is fixed in the rotating ring 413; and
at least three clamping blocks 472, which are slidably disposed inside the clamping ring 471 and between which the clamping ring 471 is disposed with a clamping spring;
and the clamping force of the clamping component 47 in the taking and placing component 43 is greater than that of the clamping component 47 in the fixed disk 41.
It should be noted that, the spigot surface has been seted up to the up end of grip block 472, the entering of ampoule 6 of being convenient for, and the centre gripping dynamics of grip block 472 does not influence ampoule 6 and slides about its inside carries out, that is to say, ampoule 6 is through pressing down the entering in the centre gripping subassembly 47 that is arranged in fixed disk 41, and after the completion melts and seals, because of being located get and put the centre gripping dynamics of holding subassembly 47 in subassembly 43 and be greater than and be located the centre gripping dynamics of the holding subassembly 47 in fixed disk 41 can be convenient for the ampoule break away from fixed disk 41.
The use method of the ampoule bottle melt-sealing device for the volatile organic standard solution comprises the following steps:
s1, installing an ampoule bottle; putting the ampoule bottles 6 into the clamping assemblies 47 in the taking and placing assembly 43 in sequence, and inserting the taking and placing assembly 43 on the fixed disc 41 to finish installation;
s2, preparing for melt sealing; the positioning column 55 of the cover plate assembly 5 is inserted on the positioning disc 45 in a sliding manner, the cover plate assembly 5 is pressed downwards, the plug 57 enters the bottle mouth of the ampoule bottle 6, the ampoule bottle 6 is pressed downwards into the clamping assembly 47 in the fixed disc 41, the ampoule bottle 6 is positioned on the same plane, and then the flame-projecting head 46 is adjusted to reach a sealing position through the telescopic rod 44;
s3, sealing by fusing; the driving gear 48 is driven to rotate by the rotating motor, and the driving gear 48 drives the driven gear 414 meshed with the driving gear to rotate, so that the ampoule bottle 6 is sealed in a rotating and melting mode;
s4, completing melt sealing; firstly, the rotating motor is stopped, the rotating plate 52 is rotated again, the boss 54 extrudes the pressing plate 56, the opening of the ampoule bottle 6 is clamped by the pressing plate 56 through matching with the plug 57, then the cover plate 51 is upwards slid to intercept the opening at the upper end of the ampoule bottle 6, the flame-throwing head 46 is stopped to spray flame after the interception is finished, and the ampoule bottle 6 which is sealed by melting is taken out.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (6)
1. A volatile organic standard solution ampoule fusion sealing device is characterized by comprising:
a frame body (1);
the control switch (2) is installed on the frame body (1), and a controller is installed in the frame body (1);
the melt-sealing cylinder (3) is fixed in the frame body (1), and a rotating motor is fixed at the bottom axis position of the melt-sealing cylinder (3);
the melt sealing component (4) is fixed inside the melt sealing cylinder (3); and
the cover plate assembly (5) is placed on the upper end face of the melt sealing cylinder (3), and the space between the cover plate assembly (5) and the melt sealing cylinder (3) is in an unsealed state;
the cover plate assembly (5) comprises:
a cover plate (51);
a rotating plate (52) which is rotatably arranged on the upper end surface of the cover plate (51) and is fixed with a plurality of bosses (54) on the outer wall;
a handle (53) provided on the rotating plate (52);
the positioning column (55) is eccentrically fixed on the lower end surface of the cover plate (51);
the pressing plates (56) are arranged in a plurality, the number of the pressing plates is the same as that of the bosses (54), the pressing plates are hinged in the cover plate (51), the cover plate (51) extends out of two ends of each pressing plate (56), and torsion springs are sleeved at the hinged positions of the pressing plates (56) and the cover plate (51);
and the plugs (57) are arranged corresponding to the pressing plates (56) and are rotatably arranged in the cover plate (51).
2. The voc standard solution ampoule sealing device of claim 1, wherein the sealing assembly (4) comprises:
the fixed disc (41) is fixed in the sealing cylinder (3) by adopting a fixed strip (42), and a clamping assembly (47) is fixed in the fixed disc;
the taking and placing assembly (43) is detachably arranged on the fixed disc (41), clamping assemblies (47) are rotatably arranged in the taking and placing assembly (43), and the clamping assemblies (47) in the fixed disc (41) correspond to the clamping assemblies (47) in the taking and placing assembly (43) one by one;
the telescopic rod (44) is fixed at the axial center of the upper end face of the fixed disc (41) and is controlled by the control switch (2);
the positioning disc (45) is fixed at the output end of the telescopic rod (44), and a positioning hole corresponding to the positioning column (55) is formed in the positioning disc;
the flame-throwing heads (46) are fixed on the circumference of the positioning disc (45) and are consistent with the pressing plates (56) in number;
and a drive gear (48) rotatably provided on the lower end surface of the fixed disk (41) and driven by the rotating motor.
3. The ampoule bottle sealing device for the volatile organic standard solution according to claim 2, wherein a plurality of placing grooves (411) are formed in the fixed tray (41) for detachably placing the taking and placing assembly (43), a plurality of connecting tables (412) are fixed on the circumference of the outer wall of the fixed tray (41), the connecting tables (412) correspond to the fire-spraying heads (46) in a one-to-one manner, a rotating ring (413) is rotatably arranged at the bottom of the connecting tables (412), a clamping assembly (47) is fixed on the inner wall of the rotating ring (413), a driven gear (414) is fixed on the outer wall of the rotating ring (413), and the driven gear (414) is meshed with the driving gear (48).
4. The VOC ampoule sealing apparatus of claim 3, wherein said pick-and-place module (43) comprises:
the taking and placing ring (431) is inserted into the placing groove (411), and a lifting ring (49) is fixed on the upper end face of the taking and placing ring, so that the taking and placing are facilitated; and
and a fixing table (432) circumferentially fixed to an outer wall of the pick-and-place ring (431) and corresponding to the plurality of connecting tables (412).
5. The VOC standard solution ampoule sealing apparatus of claim 4, wherein said clamping assembly (47) comprises:
the clamping ring (471) is positioned in the taking and placing assembly (43), the clamping ring (471) is rotatably arranged in the fixed table (432), and the clamping ring (471) positioned in the fixed disc (41) is fixed in the rotating ring (413); and
at least three clamping blocks (472) are slidably arranged in the clamping ring (471), and clamping springs are arranged between the clamping blocks and the clamping ring (471);
and the clamping force of the clamping component (47) positioned in the picking and placing component (43) is greater than that of the clamping component (47) positioned in the fixed disc (41).
6. The method for using the volatile organic standard solution ampoule sealing device according to claim 5, which comprises the following steps:
s1, installing an ampoule bottle; the ampoule bottles (6) are sequentially placed into the clamping assemblies (47) in the taking and placing assemblies (43), and the taking and placing assemblies (43) are inserted into the fixed disc (41) to complete installation;
s2, preparing for melt sealing; the positioning column (55) of the cover plate component (5) is inserted on the positioning disc (45) in a sliding mode, the cover plate component (5) is pressed downwards, a plug (57) enters the bottle opening of the ampoule bottle (6), the ampoule bottle (6) is pressed downwards into the clamping component (47) in the fixing disc (41), the ampoule bottle (6) is located on the same plane, and then the flame spray head (46) is adjusted to reach a sealing position through the telescopic rod (44);
s3, sealing by fusing; the ampoule bottle sealing machine is characterized in that a driving gear (48) is driven to rotate through a rotating motor, and the driving gear (48) drives a driven gear (414) meshed with the driving gear to rotate, so that an ampoule bottle (6) is sealed in a rotating and melting mode;
s4, completing melt sealing; firstly, stopping a rotating motor, then rotating a rotating plate (52), enabling a boss (54) to extrude a pressing plate (56), clamping the opening of the ampoule bottle (6) through the cooperation of the pressing plate (56) and a plug (57), then upwards sliding a cover plate (51), intercepting the opening at the upper end of the ampoule bottle (6), stopping a flame-jet head (46) to carry out flame-jetting after intercepting is finished, and taking out the ampoule bottle (6) which is sealed by melting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211539797.3A CN115557682B (en) | 2022-12-03 | 2022-12-03 | Ampoule bottle sealing device and method for volatile organic standard solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211539797.3A CN115557682B (en) | 2022-12-03 | 2022-12-03 | Ampoule bottle sealing device and method for volatile organic standard solution |
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| Publication Number | Publication Date |
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| CN115557682A true CN115557682A (en) | 2023-01-03 |
| CN115557682B CN115557682B (en) | 2023-03-07 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111170256A (en) * | 2020-01-15 | 2020-05-19 | 连云港市计量检定测试中心 | Ampoule washing, moistening, filling and sealing integrated device |
| CN212149381U (en) * | 2020-04-23 | 2020-12-15 | 中国农业科学院饲料研究所 | Filling device and filling and melt-sealing system for solution standard substance |
| CN212425860U (en) * | 2020-05-08 | 2021-01-29 | 广州佳途科技股份有限公司 | Accuse temperature prevents volatile standard substance ampoule fusion sealing equipment of liquid |
| CN215712597U (en) * | 2021-08-04 | 2022-02-01 | 河北凯威恒诚制药有限公司 | Ampoule bottle sealing device |
| CN216273742U (en) * | 2021-10-22 | 2022-04-12 | 常州大业能源科技有限公司 | Rotary fusion sealing machine for oxyhydrogen ampoule bottle |
-
2022
- 2022-12-03 CN CN202211539797.3A patent/CN115557682B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111170256A (en) * | 2020-01-15 | 2020-05-19 | 连云港市计量检定测试中心 | Ampoule washing, moistening, filling and sealing integrated device |
| CN212149381U (en) * | 2020-04-23 | 2020-12-15 | 中国农业科学院饲料研究所 | Filling device and filling and melt-sealing system for solution standard substance |
| CN212425860U (en) * | 2020-05-08 | 2021-01-29 | 广州佳途科技股份有限公司 | Accuse temperature prevents volatile standard substance ampoule fusion sealing equipment of liquid |
| CN215712597U (en) * | 2021-08-04 | 2022-02-01 | 河北凯威恒诚制药有限公司 | Ampoule bottle sealing device |
| CN216273742U (en) * | 2021-10-22 | 2022-04-12 | 常州大业能源科技有限公司 | Rotary fusion sealing machine for oxyhydrogen ampoule bottle |
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| CN115557682B (en) | 2023-03-07 |
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