CN208313519U - Positive seal experimental rig for syringe - Google Patents
Positive seal experimental rig for syringe Download PDFInfo
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- CN208313519U CN208313519U CN201820782904.8U CN201820782904U CN208313519U CN 208313519 U CN208313519 U CN 208313519U CN 201820782904 U CN201820782904 U CN 201820782904U CN 208313519 U CN208313519 U CN 208313519U
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- syringe
- support frame
- telescopic rod
- core bar
- counterweight
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Abstract
The utility model discloses a kind of positive seal experimental rig for syringe, detection device includes: the first support frame, and the upper end of the first support frame is equipped with the first mounting portion of mounting of syringe；Second support frame, positioned at the side of the first support frame, the second support frame upper end is equipped with the second mounting portion；Telescopic rod, on the second mounting portion of the second support frame, for the output end of telescopic rod towards the first support frame, core bar of the output end of telescopic rod for the syringe on the first support frame provides axial force；Counterweight frame, counterweight frame include a hook and counterweight carrier, and hook is removably attachable on the core bar of syringe, and for placing counterweight, the counterweight on counterweight carrier is used to provide lateral force to the core bar of syringe counterweight carrier.The positive seal experimental rig for syringe of the utility model can effectively detect syringe at the same time by axial force and lateral force when sealing performance, detection method is simple, easy to operate.
Description
Technical field
The utility model relates to the structure-design technique fields of syringe performance testing device, espespecially a kind of to be used for syringe
Positive seal experimental rig.
Background technique
Existing performing leak test is usually the test of the leakage situation to syringe in the case where axial force, but
Under actual conditions, syringe is also possible to will receive lateral force, if the sealing performance of syringe is only able to satisfy it by axial direction
The case where power, still can generate the case where leakage when it is by lateral force, at the piston or sealing ring of syringe, and existing
Detection device be unable to test syringe at the same time by axial force and lateral force when syringe sealing performance.
According to national standards, existing syringe needs to test its leakproofness, existing to by positive pressure
Syringe performing leak test, usually first pass through push rod to syringe core bar apply lateral force, then again to core bar
Apply lesser axial force, applies axial force completely again after removing lateral force, in other words, existing test device can not be provided and be held
Continue stable lateral force, which results in existing test device can not accurately test injection device it is close when by positive pressure
Seal effect.
Therefore, the application is dedicated to providing a kind of novel positive seal experimental rig for syringe.
Utility model content
The purpose of the utility model is to provide a kind of positive seal experimental rig for syringe, can simultaneously to
The core bar of syringe provides stable axial force and lateral force, thus accurate sealing of test injection device when by positive pressure
Effect, and experimental rig structure is simple, method is easy to operate.
The technical scheme that the utility model is provided is as follows:
A kind of positive seal experimental rig for syringe, comprising: the first support frame, first support frame it is upper
End is equipped with first mounting portion for being used for mounting of syringe；Second support frame, positioned at the side of first support frame, described
Two support frame upper ends are equipped with the second mounting portion；Telescopic rod, the telescopic rod are located on the second mounting portion of second support frame,
The output end of the telescopic rod is used for towards first support frame, the output end of the telescopic rod to first support frame
Syringe core bar provide axial force；Counterweight frame, the counterweight frame include a hook and a counterweight carrier, and the hook can
It is releasably connected on the core bar of the syringe, the counterweight carrier is for placing counterweight, on the counterweight carrier
Counterweight is used to provide lateral force to the core bar of the syringe.
Preferably, first mounting portion includes: supporting plate, and the supporting plate is set to the upper end of first support frame, and
The supporting plate has an arc-shaped depression portion for being used for support syringe；Pressing plate, the pressing plate are located at the top of the supporting plate, the pressure
The arc-shaped depression portion of the arc-shaped depression portion that plate is used to press syringe with one, the arc-shaped depression portion of the pressing plate and the supporting plate is with respect to shape
At one for installing the limiting section of the syringe；Nut, the nut thread are connected on third support frame, the nut
Lower end is equipped with a bearing, and the bearing is for installing the pressing plate.
Preferably, second mounting portion includes a plate, and the plate is equipped with a guide pad, sets on the guide pad
There is the through-hole that the output end for the telescopic rod passes through, an adjusting nut, the adjusting nut are additionally provided on the guide pad
For applying lateral pressure to the output end for the telescopic rod being located in the guide pad.
Preferably, second support frame is retractable structure, and the output end of the retractable structure is described for installing
Second mounting portion, the retractable structure are used to adjust the height of second mounting portion.
Preferably, the positive seal experimental rig for syringe further includes a leading truck, the leading truck
Side is equipped with a sliding rail being arranged along the vertical direction, and the fixing end of the telescopic rod is equipped with a sliding block, the sliding block and the cunning
Rail cooperation, the sliding block are moved along the sliding rail.
Preferably, when the output end of the adjusting rod applies axial force to the core bar of the syringe, the adjusting rod
Output end supports the end of the core bar set on the syringe；Or；The output end of the adjusting rod is applied to the core bar of the syringe
When adding axial force, the output end of the adjusting rod is connect with the core bar of the syringe by retractable structure.
A kind of positive seal experimental rig for syringe provided by the utility model can bring following at least one
Kind the utility model has the advantages that
1, syringe is placed in the first support frame by the positive seal experimental rig for syringe of the utility model,
Telescopic rod is placed on the second support frame, telescopic rod provides axial compressive force to the core bar of syringe, and the counterweight on counterweight frame is to note
The core bar of emitter provides stable lateral force, so as to detect core bar by lateral force and simultaneously by stable lateral force and
Sealing effect under the action of stable axial force, also, by the weight of the pressure and counterweight that adjust telescopic rod, it can detecte
Syringe is in multiple substandard sealing performances.
2, in the utility model, the structure adjustable structure of the first mounting portion for mounting of syringe, to make this dress
Set the syringe test that can be applied to the multiple sizes of multiple specifications.
3, in the utility model, the second support frame for installing telescopic rod is retractable structure, when having replaced different rule
After the syringe of lattice, this structure allows to preferably be aligned the core bar of syringe convenient for the height of adjusting telescopic rod.
4, in the utility model, telescopic rod is limited by leading truck, telescopic rod can be made more rapidly accurately right
The core bar of quasi- syringe.
5, the positive seal test method operating procedure for syringe of the utility model is few, can be infused with validity test
Emitter by lateral pressure and simultaneously by axial compressive force and lateral pressure in the case where sealing performance, to effectively detect
Whether the sealing performance of syringe can achieve national standard.
Detailed description of the invention
Below by clearly understandable mode, preferred embodiment is described with reference to the drawings, to the above-mentioned spy of the utility model
Property, technical characteristic, advantage and its implementation are further described.
Fig. 1 is a kind of a kind of specific embodiment of positive seal experimental rig for syringe of the utility model
Structural schematic diagram；
Fig. 2 is the side view shown in Fig. 1 for the partial structurtes of the positive seal experimental rig of syringe.
Drawing reference numeral explanation:
First support frame 1, fixed block 11, supporting plate 12, pressing plate 13, nut 14, third support frame 15, bearing 16；
Syringe 2, core bar 21；
Second support frame 3, plate 31, guide pad 32, nut 33, threaded hole 34；
Telescopic rod 5, output end 51；
Bottom plate 6；
Hook 71, counterweight carrier 72；
Leading truck 8, sliding rail 81, sliding block 82.
Specific embodiment
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, attached drawing will be compareed below
Illustrate specific embodiment of the present utility model.It should be evident that the accompanying drawings in the following description is only the one of the utility model
A little embodiments for those of ordinary skill in the art without creative efforts, can also be according to these
Attached drawing obtains other attached drawings, and obtains other embodiments.To make simplified form, only schematically showing in each figure
Part relevant to the utility model, they do not represent its practical structures as product.
As shown in Figure 1, 2, this specific embodiment discloses the one of 2 sealing property detection device of syringe of the utility model
Kind more preferred embodiment, including the first support frame 1, the second support frame 3, telescopic rod 5 and counterweight frame 7, wherein the first support
The upper end of frame 1 is equipped with first mounting portion for being used for mounting of syringe 2, and the second support frame 3 is located at the side of the first support frame 1,
And 3 upper end of the second support frame is equipped with the second mounting portion, telescopic rod 5 is located on the second mounting portion of the second support frame 3, telescopic rod 5
Output end 51 towards the first support frame 1, core bar of the output end 51 of telescopic rod 5 for the syringe 2 on the first support frame 1
21 provide axial force, and counterweight frame 7 includes a hook 71 and a counterweight carrier 72, and hook 71 is removably attachable to syringe 2
Core bar 21 on, for counterweight carrier 72 for placing counterweight, the counterweight on counterweight carrier 72 is used for the core bar 21 to syringe 2
Lateral force is provided.
When being sealed performance detection, syringe 2 is placed in the first mounting portion of the first support frame 1, telescopic rod 5
Output end 51 provide axial compressive force to the core bar 21 of syringe 2, the counterweight on counterweight frame 7 provides lateral force to core bar 21, this
Sample can detect syringe 2 piston and sealing ring core bar 21 simultaneously by axial force and lateral force in the case where leakage
Situation.
Specifically, the first mounting portion includes supporting plate 12, pressing plate 13 and nut 14, supporting plate 12 is set to the first support frame 1
On one fixed block 11 of upper end, and supporting plate 12 has an arc-shaped depression portion for being used for support syringe 2；Pressing plate 13 is located at supporting plate 12
Top, pressing plate 13 have an arc-shaped depression portion for being used to press syringe 2, the arc-shaped depression portion of pressing plate 13 and the arc-shaped depression portion of supporting plate 12
It is opposite to form a limiting section for being used for mounting of syringe 2；Nut thread is connected on third support frame 15.In the present embodiment
The structure of one mounting portion allows to install the syringe 2 of different size, when the syringe diameter of syringe 2 becomes larger, passes through spiral shell
Master tape dynamic pressure plate 13 moves up, and when the syringe diameter of syringe 2 becomes smaller, is moved down by nut band dynamic pressure plate 13.
Specifically, in the first mounting portion, the third support frame 15 for installing nut is a L-type plate, the of the L-type plate
One flanging is fixedly connected on the fixed block 11 of 1 upper end of the first support frame, and the second flanging is perpendicular to the first flanging, and the second flanging
It is equipped with the threaded hole 34 passed through for nut, is moved up and down by 14 pressing plate of adjusting nut, to adjust pressing plate 13 and supporting plate
Spacing between 12.
Specifically, the lower end of nut 14 is equipped with a bearing 16, pressing plate 13 is mounted on bearing 16, the inner ring and spiral shell of bearing 16
Mother 14 connects, and the outer ring of bearing 16 is connect with pressing plate 13, under this configuration, when nut 14 rotates, is only capable of in dynamic bearing
Circle rotation, not will drive the outer ring rotating of bearing, so, when nut 14 rotates, moved up and down by bearing 16 with dynamic pressure plate 13,
The rotation of pressing plate 13 is not will drive.
In the present embodiment, the second mounting portion includes a plate 31, and plate 31 is equipped with a guide pad 32, on guide pad 32
Equipped with the through-hole that the output end 51 for telescopic rod 5 passes through, an adjusting nut 33 is additionally provided on guide pad 32, adjusting nut 33 is used
In applying lateral pressure to the output end 51 for the telescopic rod 5 being located in guide pad 32, to clamp the extension end 51 of telescopic rod 5.
When telescopic rod 5 provides preset axial compressive force to the core bar 21 of syringe 2, stretching in guide pad 32 is compressed by adjusting nut
The output end 51 of contracting bar 5 avoids detecting so that output end 51 be allow to provide sustainedly and stably axial compressive force to core bar 21
Cheng Zhong, output end 51 is mobile, so that the accuracy and reliability of detection structure be effectively ensured.
In the present embodiment, the second support frame 3 is a retractable structure, and the output end of retractable structure is for installing second
Mounting portion, retractable structure is by the height of adjustable second mounting portion that stretches, when the size of syringe 2 to be detected occurs
When variation, the height of the central axis of the core bar 21 of syringe 2 also changes therewith, at this point, by the height for adjusting the second mounting portion,
The telescopic rod 5 in the second mounting portion can be made to be directed at the core bar 21 of syringe 2, that is to say, that for the note to be checked of any model
Emitter, the telescopic rod in this detection device can provide stable axial force.
In the present embodiment, 2 sealing property detection device of syringe further includes a leading truck 8, and the side of leading truck 8 is equipped with
One sliding rail 81 being arranged along the vertical direction, the fixing end of telescopic rod 5 are equipped with a sliding block 82, and sliding block 82 and sliding rail 81 cooperate, sliding block
82 move along sliding rail 81.That is, when through the flexible height to adjust the second mounting portion of the second support frame, the second peace
Telescopic rod 5 in dress portion is moved by sliding block 82 and the cooperation of sliding rail 81 along leading truck 8, and in the process, leading truck 8 is to stretching
Contracting bar 5 has position-limiting action, and the central axis of the telescopic rod 5 in the second mounting portion is avoided to deviate in the horizontal direction, so as to
To guarantee that telescopic rod 5 can be directed at 21 center of core bar of syringe 2.
In the present embodiment, when the output end 51 of adjusting rod applies axial force to the core bar 21 of the syringe 2, adjusting rod
Output end 51 support set on syringe 2 core bar 21 end.That is, the output end 51 of adjusting rod directly bears against core bar 21
On to core bar 21 provide axial force, the two do not need connection structure directly and is fixed, and be arranged can simplify structure in this way.
In the present embodiment, the hook 71 in counterweight frame 7 is a ring elastic parts, in installation hook 71, by the elasticity
Part, which struts, to be covered in the end point of core bar 21, and counterweight carrier 72 also includes 71 structures of hook, by the extension on counterweight carrier 72
71 structure of hook is hung on ring elastic parts, and when being arranged in this way, the installation and removal of counterweight frame 7 are more flexibly.
In the present embodiment, the telescoping mechanism of the second support frame of telescopic rod and composition can be according to actual needs using electricity
The structure that dynamic push rod, hydraulic cylinder etc. can stretch.
It of courses, in other specific embodiments of the positive seal experimental rig for syringe of the utility model
In, the structure of the first mounting portion and the second mounting portion can be according to being actually adjusted, and pressing plate can be in the first mounting portion
Height is adjusted by the regulating device of other forms, the distance between pressing plate and supporting plate also can be set to uncontrollable fixed knot
Structure, the adjusting nut property of the can choose setting on the guide pad in the second mounting portion；Second support frame can be set to fixed height
Structure, the structure of leading truck also can according to need selective setting；When the second support frame is the structure of fixed height, the
One support frame can be set to telescopic structure, by the flexible height to adjust the first mounting portion of the first support frame, thus
The core bar of syringe in the first mounting portion is set to be directed at the output end of telescopic rod in the first mounting portion, if the first support frame is scalable
Structure when, leading truck matched with the first support frame can be set, for being oriented to the syringe on the first support frame；
When adjusting rod applies axial force to syringe, the output end of adjusting rod and the end of core bar can pass through connecting rope, fixed jaw
Etc. being connected, thus the connection status for keeping the holding of adjusting rod its output end and core bar during applying axial force stable；
In addition, the specific structure of counterweight frame can adjust according to actual needs, no longer repeat one by one herein.
Specific embodiment two
This specific embodiment discloses a kind of positive seal test method for syringe, and this method is using specific real
The positive seal experimental rig that syringe is used for disclosed in example one is applied, comprising steps of
S10: injection is greater than the water of nominal capacity volume in syringe；
S20: pressing the core bar of syringe, the air in exhaustjet device, and by the runoff investigation in syringe to its public affairs
Claim at capacity or be adjusted to the position less than or equal to its nominal capacity, the conehead of sealing injection device；
S30: syringe is flat in the first mounting portion on the first support frame；
S40: a counterweight frame is hung in the end of the core bar of syringe, is stepped up weight according to preset standard on counterweight frame
Code, counterweight apply lateral force to the core bar of syringe by self gravity；
S50: in the case where the lateral force that core bar is applied by counterweight, check at the piston or sealing ring of syringe whether
Leakage；
S60: axial force is applied to the core bar of syringe by telescopic rod；
S70: it in the case where the axial force of the application of lateral force and telescopic rod that core bar is applied by counterweight simultaneously, checks
At the piston or sealing ring of syringe whether leakage；
S80: after the syringe for replacing different size, by adjust the second support frame in extension end it is flexible flexible to adjust
The height of bar makes the end of telescopic rod alignment core bar.
It, can be by the water in syringe if the syringe for the use of nominal capacity volume being 5mL in step S20
It is adjusted at 5mL, by adjustable to 3mL or 4m.Also, in step S20, the water in syringe can be manually adjusted
Amount can also apply axial force to the core bar of syringe to adjust the water in syringe by telescopic rod.
In step S60, when the output end of telescopic rod applies axial force to core bar, by guide pad to output end
It is oriented to, and laterally-clamped power is applied to the output end of telescopic rod by the adjusting nut on guide pad.Setting can be in this way
The output end of telescopic rod is set to provide stable axial force to core bar, to keep test result more accurate reliable.
In step S60, when the output end of telescopic rod applies axial force to core bar, the output end of telescopic rod is direct
To the end for being located at core bar, the movement of the output end of telescopic rod is convenient in setting in this way, and can simplify structure.
In step S80, when adjusting the height of telescopic rod, the sliding block in the fixing end of telescopic rod is along setting on leading truck
Upright slide rail sliding, setting in this way can be such that telescopic rod position in the horizontal direction keeps centainly, to make telescopic rod
Output end is easier to be accurately aimed at the center of core bar.
It of courses, in other specific embodiments of the positive seal test method for syringe of the utility model
In, in step S20, the liquid volume after nominal capacity volume and exclusion air in syringe can be adjusted according to actual needs；
In step S60, when the extension end of telescopic rod applies axial force to core bar, output end can not be oriented to and be pressed from both sides
Tightly, furthermore it is also possible to the end of the core bar by the extension end and syringe of openable and closable connector connection expansion link；In step
In S80, when adjusting the height of telescopic rod, it can not be limited.
It should be noted that above-described embodiment can be freely combined as needed.The above is only the utility model
Preferred embodiment, it is noted that for those skilled in the art, do not departing from the utility model principle
Under the premise of, several improvements and modifications can also be made, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (6)
1. a kind of positive seal experimental rig for syringe characterized by comprising
First support frame, the upper end of first support frame are equipped with first mounting portion for being used for mounting of syringe；
Second support frame, positioned at the side of first support frame, second support frame upper end is equipped with the second mounting portion；
Telescopic rod, the telescopic rod are located on the second mounting portion of second support frame, the output end direction of the telescopic rod
First support frame, the output end of the telescopic rod provide axial for the core bar of the syringe on first support frame
Power；
Counterweight frame, the counterweight frame include that a hook and a counterweight carrier, the hook are removably attachable to the injection
On the core bar of device, for placing counterweight, the counterweight on the counterweight carrier is used for the syringe counterweight carrier
Core bar provide lateral force.
2. the positive seal experimental rig according to claim 1 for syringe, it is characterised in that: first peace
Dress portion includes:
Supporting plate, the supporting plate is set to the upper end of first support frame, and the supporting plate has one to be used for support syringe
Arc-shaped depression portion；
Pressing plate, the pressing plate are located at the top of the supporting plate, and the pressing plate has an arc-shaped depression portion for being used to press syringe, institute
The arc-shaped depression portion of the arc-shaped depression portion and the supporting plate of stating pressing plate is opposite to form one for installing the limiting section of the syringe；
Nut, the nut thread are connected on third support frame, and the lower end of the nut is equipped with a bearing, and the bearing is used for
The pressing plate is installed.
3. the positive seal experimental rig according to claim 1 for syringe, it is characterised in that: second peace
Dress portion includes a plate, and the plate is equipped with a guide pad, and the guide pad is equipped with the output end for the telescopic rod
The through-hole passed through, is additionally provided with an adjusting nut on the guide pad, and the adjusting nut is used for being located in the guide pad
The output end of telescopic rod applies lateral pressure.
4. the positive seal experimental rig according to claim 1 for syringe, it is characterised in that: described second
Support is retractable structure, and the output end of the retractable structure is for installing second mounting portion, the retractable structure
For adjusting the height of second mounting portion.
5. the positive seal experimental rig according to claim 3 for syringe, it is characterised in that: further include leading
To frame, the side of the leading truck is equipped with a sliding rail being arranged along the vertical direction, and the fixing end of the telescopic rod is equipped with a sliding block,
The sliding block and the sliding rail cooperate, and the sliding block is moved along the sliding rail.
6. the positive seal experimental rig according to any one of claim 1 to 5 for syringe, feature exist
In:
When the output end of the telescopic rod applies axial force to the core bar of the syringe, the output end of the telescopic rod, which supports, to be set to
The end of the core bar of the syringe；
Or；
The output end of the telescopic rod to the core bar of the syringe apply axial force when, the output end of the telescopic rod with it is described
The core bar of syringe is connected by retractable structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820782904.8U CN208313519U (en) | 2018-05-24 | 2018-05-24 | Positive seal experimental rig for syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820782904.8U CN208313519U (en) | 2018-05-24 | 2018-05-24 | Positive seal experimental rig for syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208313519U true CN208313519U (en) | 2019-01-01 |
Family
ID=64716019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820782904.8U Active CN208313519U (en) | 2018-05-24 | 2018-05-24 | Positive seal experimental rig for syringe |
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| Country | Link |
|---|---|
| CN (1) | CN208313519U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108444646A (en) * | 2018-05-24 | 2018-08-24 | 上海市医疗器械检测所 | Positive seal experimental rig and method for syringe |
| RU2801547C2 (en) * | 2019-04-08 | 2023-08-10 | Феттер Фарма-Фертигунг Гмбх Унд Ко. Кг | Transition element for connecting a medical hollow body with a measuring device of extension/compression, a checking system, a method of checking the tightness of a medical hollow body and use of the measuring device of extension/compression |
-
2018
- 2018-05-24 CN CN201820782904.8U patent/CN208313519U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108444646A (en) * | 2018-05-24 | 2018-08-24 | 上海市医疗器械检测所 | Positive seal experimental rig and method for syringe |
| RU2801547C2 (en) * | 2019-04-08 | 2023-08-10 | Феттер Фарма-Фертигунг Гмбх Унд Ко. Кг | Transition element for connecting a medical hollow body with a measuring device of extension/compression, a checking system, a method of checking the tightness of a medical hollow body and use of the measuring device of extension/compression |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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| CB03 | Change of inventor or designer information |
Inventor after: Hua Songhe Inventor after: Yu Hongyi Inventor before: Hua Songhe |