CN209416995U - A kind of mounting structure of sample introduction needle - Google Patents
A kind of mounting structure of sample introduction needle Download PDFInfo
- Publication number
- CN209416995U CN209416995U CN201822058057.3U CN201822058057U CN209416995U CN 209416995 U CN209416995 U CN 209416995U CN 201822058057 U CN201822058057 U CN 201822058057U CN 209416995 U CN209416995 U CN 209416995U
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- China
- Prior art keywords
- needle
- sample introduction
- introduction needle
- needle stand
- syringe
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Abstract
The utility model discloses a kind of mounting structures of sample introduction needle, it is related to sample injector technical field, its key points of the technical solution are that: including cabinet, it is mounted on the intracorporal needle stand of case, sample introduction needle, sample introduction needle includes syringe, with handled needle core, needle stand is equipped with clip assembly, clip assembly includes two clamping bars, two clamping bars are symmetricly set on the two sides of needle stand, the distance between two opposite side walls of clamping bar are equal to the diameter of syringe, two clamping bars are extended towards far from the end of needle stand, syringe is connected between two clamping bars, clip assembly has multiple, multiple clip assemblies are uniformly distributed along the length direction of needle stand.Sample introduction needle is when being installed to needle stand, the limitation on position is carried out by multiple clip assemblies, it on the one hand is the contact area increased with sample introduction needle, sample introduction needle is set to be not easy to fall, on the other hand multiple clip assemblies respectively limit sample introduction needle in different height, make sample introduction needle uniform force, sample introduction needle is less prone to shift phenomenon.
Description
Technical field
The utility model relates to sample injector technical field, in particular to a kind of mounting structure of sample introduction needle.
Background technique
Gas chromatography-mass spectrometry is a kind of mass spectrograph applied to various fields such as industrial detection, environmental protections, gas
Phase chromatograph-mass spectrometer is actually to combine chromatograph and mass spectrograph, and the sample of detection is first into chromatograph
Interior progress chromatography detection carries out quality into mass spectrograph again and determines, and sample importing chromatograph is just needed using to sample injector.
Currently, the Chinese patent that notification number is CN202974959U discloses a kind of full-automatic gas-chromatography automatic sampling
Device comprising sample disc, sample introduction tower are installed on pedestal, the pedestal, sample introduction tower is equipped with sample introduction sliding block, stepper motor I, pulley
I, synchronous belt I, sliding dowel block, stepper motor I and pulley I are connected by synchronous belt I, and synchronous belt I passes through with sample introduction sliding block
Sliding dowel block connection, sample introduction sliding block are equipped with hub assemblies, and hub assemblies include needle stand, sample introduction needle, needle core fixed block, work
Plug, stepper motor III, pulley III, synchronous belt III, stepper motor III and pulley III are connected by synchronous belt III, synchronous belt III with
Piston is mutually fixed, and sample introduction needle is mounted in needle stand by needle core fixed block.
Above-mentioned autosampler is cooperated by the rotation of sample disc and the operation up and down of sample introduction sliding block, to realize to sample introduction
Needle washes needle, sample introduction, sampling, substitutes hand sampling, improves working efficiency.But it is only solid by needle core in above-mentioned autosampler
Determine block sample introduction needle is mounted on needle stand at the middle part of sample introduction needle, and replacement sample introduction needle for convenience, needle core fixed block can't
Sample introduction needle is completely fixed on needle stand, this results in autosampler during the work time, and sample introduction needle will appear the feelings of deflection
Condition bends so as to cause the needle point of sample introduction needle.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of mounting structure of sample introduction needle,
It is installed the more stable advantage of rear connection structure with sample introduction needle.
The above-mentioned technical purpose of the utility model has the technical scheme that a kind of installation of sample introduction needle
Structure, including cabinet, it is mounted on the intracorporal needle stand of case, sample introduction needle, the sample introduction needle includes syringe, with handled needle core, institute
Needle stand is stated equipped with clip assembly, the clip assembly includes two clamping bars, and two clamping bars are symmetricly set on the two of needle stand
Side, the distance between two opposite side walls of clamping bar are equal to the diameter of syringe, and two ends of the clamping bar far from needle stand are prolonged in opposite directions
It stretches, the syringe is connected between two clamping bars, and the clip assembly has multiple, and multiple clip assemblies are along the length side of needle stand
To being uniformly distributed.
Through the above technical solutions, sample introduction needle carries out the limitation on position when being installed to needle stand, by multiple clip assemblies,
On the one hand it is the contact area increased with sample introduction needle, sample introduction needle is made to be not easy to fall, on the other hand multiple clip assembly point
Sample introduction needle is not limited in different height, makes sample introduction needle uniform force, sample introduction needle is less prone to shift phenomenon.
Preferably, it is additionally provided with limit assembly on the needle stand, the limit assembly includes turning part, buckling plate, described to turn over
Transfer part is hinged on the side of needle stand, and the buckling plate is located at the other side of needle stand, and turning part, which is equipped with, to be buckled, on the buckling plate
Equipped with card slot, in the card slot that the buckle can snap fit onto buckling plate after overturning.
Through the above technical solutions, turning part is after sample introduction needle enters clip assembly, it can be by being fastened on buckling plate
On, the limitation to sample introduction needle is further strengthened, a possibility that sample introduction needle is detached from needle stand from needle stand side surface direction is reduced.
Preferably, turning part is equipped with cushion towards the side of sample introduction needle.
Through the above technical solutions, cushion squeezes sample introduction needle in turning part rotation process, cushion is from extruding
Deformation occurs in the process, and fills the gap between turning part and syringe, increases the contact area to syringe, to limit syringe
Offset.
Preferably, the upper surface of the syringe is equipped with supporting block, and the cross section of the supporting block is greater than the cross section of syringe,
The supporting block is for being against the clip assembly positioned at needle stand the top.
Through the above technical solutions, syringe will increase the abutting power of supporting block Yu corresponding clip assembly under the effect of gravity,
Syringe is supported on current location by supporting block simultaneously, reduces a possibility that syringe is detached from needle stand along needle stand length direction.
Preferably, it is equipped with sliding groove above the needle stand, sliding shoe is equipped in the sliding groove, the needle core has handle
End pass through sliding and groove sidewall and connect with sliding shoe；It is additionally provided with the first driving assembly for driving sliding shoe mobile.
Through the above technical solutions, needle core carries out inhaling sample or setting-out by the way of sliding up and down with sliding shoe, and
Sliding shoe is moved along sliding groove, the mobile stabilization of sliding shoe, to keep sample introduction needle suction sample or setting-out process similarly stable.
Preferably, the needle core is equipped with connector, and one end and the handled end of needle core band of the connector are mutually fitted
Match and be connected on the needle core end, the connector other end is cylindric and is inserted into sliding shoe that the sliding shoe is away from cunning
The side of dynamic seat is equipped with bolt, and the bolt is for pushing against the connector being in sliding shoe.
Through the above technical solutions, needle core is connected on sliding shoe using connector, the needle core of diameter very little is protected,
A possibility that needle core is impaired is reduced, and connector is connect in such a way that bolt pushes against with sliding shoe, has both guaranteed the jail of connection
Solidity, and disassembly can be rapidly completed.
Preferably, first driving assembly includes the first belt, the first driving wheel, the first driven wheel, the first stepping electricity
Machine, first driving wheel and the first driven wheel are located at the same side at sliding groove both ends, and the first belt coiling is main first
Between driving wheel and the first driven wheel and it is parallel to sliding groove, first belt is connect with sliding shoe, first stepper motor
For driving the first driving wheel to be rotated.
Through the above technical solutions, the movement of the i.e. controllable sliding shoe of the rotation of the first stepper motor of control, to realize
Control to sample introduction needle sample introduction speed makes sample introduction needle be able to maintain identical sample introduction speed when carrying out sample introduction to same group of sample, mentions
The accuracy of high subsequent analysis result.
Preferably, the middle part of the sample introduction needle is equipped with the square for sample introduction needle of conveniently taking.
Hurt caused by sample introduction needle during plugging sample introduction needle in clip assembly through the above technical solutions, reducing
Evil, extends the service life of sample introduction needle.
In conclusion the utility model having the beneficial effect that in contrast to the prior art
1. the installation of sample introduction needle is stablized, it is not easy to the case where falling off or deviating occur；
2. the needle core of sample introduction needle is connect with sliding shoe, it can be precisely controlled the movement speed of needle core, so that sample introduction speed be made to obtain
To effective control, precision of analysis is improved；
3. reinforcing the protection to sample introduction needle by setting cushion, square, connector, operator in cargo handling process is reduced
Member is to the damage under sliding shoe pulling in the damage of sample introduction needle and operational process to needle core.
Detailed description of the invention
Fig. 1 is the overall structure diagram of embodiment；
Fig. 2 is the partial structural diagram of embodiment；
Fig. 3 is the enlarged drawing of A in Fig. 2；
Fig. 4 is the structural schematic diagram of sample introduction needle in embodiment.
Appended drawing reference: 1, sample introduction needle；11, syringe；111, needle point；112, square；113, supporting block；12, needle core；121,
Hand；2, cabinet；21, sample holes；22, cover board；23, sliding bar；3, attachment base；4, needle stand；41, limit assembly；411, turning part；
4111, it buckles；4112, cushion；412, buckling plate；4121, card slot；42, clip assembly；421, it is clamped bar；5, fixed block；
51, sliding groove；52, through-hole；53, through slot；6, the first driving assembly；61, the first stepper motor；62, the first belt；63, first
Driving wheel；64, the first driven wheel；7, sliding shoe；71, connecting plate；72, bolt；8, the second driving assembly；81, the second stepping electricity
Machine；82, the second belt；83, the second driving wheel；84, the second driven wheel；9, connector.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
A kind of mounting structure of sample introduction needle, as shown in Figure 1, including with open cabinet 2, cabinet 2 is interior to be equipped with sample introduction needle
1, needle stand 4, the first driving assembly 6, the second driving assembly 8, fixed block 5, supporting element, attachment base 3, cabinet 2 are equipped with for closing
Close open cover board 22, the lower end surface of cabinet 2 is equipped with sample holes 21, vertically set between the both ends medial surface of cabinet 2 there are two
Sliding bar 23, two sliding bars 23 are identical as the distance between opening and are close to 2 inner sidewall of cabinet of face opening, attachment base
3 are slidably attached on two sliding bars 23, and needle stand 4, fixed block 5, the first driving assembly 6 are installed on attachment base 3, needle
Seat 4 is located at the surface of sample holes 21, and sample introduction needle 1 is mounted on needle stand 4, and fixed block 5 is located at the top of needle stand 4, the first driving
Component 6 is located at side of the fixed block 5 far from sliding bar 23.Referring to Fig. 1, Fig. 2, fixed block 5 is equipped with sliding groove 51, sliding groove 51
Interior to be equipped with sliding shoe 7, the side wall of sliding groove 51 is equipped with through slot 53, and the side wall of sliding shoe 7 towards through slot 53 is equipped with connecting plate
71, connecting plate 71 passes through through slot 53 far from one end of sliding shoe 7 and is connected to the first driving assembly 6, and sliding groove 51 is towards sample introduction needle 1
Side be equipped with through-hole 52, sample introduction needle 1 includes syringe 11, needle core 12 with needle point 111,111 direction of needle point of syringe 11
Sample holes 21, the side wall of syringe 11 are equipped with the square 112 for syringe 11 of conveniently taking, and the needle core 12 of sample introduction needle 1 passes through logical
Hole 52 is connect with sliding shoe 7.First driving assembly 6 driving sliding shoe 7 moves up and down, and sliding shoe 7 drives needle core 12 mobile, thus
Realize that the suction sample or sample introduction of sample introduction needle 1, the second driving assembly 8 are drivingly connected seat 3 and slide up and down on two sliding bars 23, from
And it realizes sample introduction needle 1 and protrudes into sample holes 21 or lean out sample holes 21.
Referring to Fig. 1, Fig. 2, the first driving assembly 6 includes the first stepper motor 61, the first driving wheel 63, the first driven wheel
64, the first belt 62, the first driving wheel 63 and the first driven wheel 64 are respectively positioned on side of the sliding groove 51 far from sliding bar 23, and first
For 62 coiling of belt between the first driving wheel 63 and the first driven wheel 64, the first driving wheel 63 is located at the upper of the first driven wheel 64
Side, the first stepper motor 61 is connected to sliding groove 51 on the attachment base 3 of 23 side of sliding bar, the first stepper motor 61 it is defeated
Shaft and the first driving wheel 63 are coaxially connected, and the first belt 62 is connect by connecting plate 71 with sliding shoe 7.
Referring to Fig. 1, the second driving assembly 8 is mounted on the inner sidewall of cabinet 2 face opening, and the second driving assembly 8
Between two sliding bars 23, the second driving assembly 8 includes second stepper motor 81, the second driving wheel 83, the second driven wheel
84, the second belt 82, the second driving wheel 83 is close to the bottom of cabinet 2, and the second driven wheel 84 is close to the top of cabinet 2, second step
The bottom of cabinet 2 is fixed on into motor 81, and its output shaft and the second driving wheel 83 are coaxially connected, 82 coiling of the second belt exists
Between second driving wheel 83 and the second driven wheel 84, the second belt 82 is connect with attachment base 3.
Referring to fig. 2, Fig. 3, needle stand 4 are additionally provided with clip assembly 42, limit assembly 41, and clip assembly 42 has multiple, multiple cards
Connected components 42 are uniformly arranged along the length direction of needle stand 4, and clip assembly 42 includes two clamping bars 421, and two clamping bars 421 are right
Claim the two sides that needle stand 4 is set, one end of clamping bar 421 is connected on needle stand 4, is clamped the other end direction opening side of bar 421
To two clamping bars 421 are extended towards far from the end of needle stand 4, and the syringe 11 of sample introduction needle 1 snaps fit onto clip assembly from outside to inside
In 42.Limit assembly 41 includes turning part 411, buckling plate 412, and it is close that turning part 411 with buckling plate 412 is located at needle stand 4
On the two sides at middle part, turning part 411 is L-type, and one end of turning part 411 is hinged on needle stand 4, on the other end of turning part 411
Equipped with buckle 4111, buckling plate 412 is equipped with corresponding card slot 4121, and for turning part 411 after overturning, buckle 4111 is embedded into card
To fix syringe 11 in slot 4121, turning part 411 is equipped with the cushion 4112 for filling gap towards the side of syringe 11.
The top of syringe 11 is equipped with supporting block 113, and supporting block 113 is whole to support on the clip assembly 42 of 11 the top of syringe for being against
A sample introduction needle 1.
Referring to fig. 2, Fig. 4, the top of needle core 12 are equipped with handle 121, and connector 9 is arranged on handle 121, and connector 9 is remote
One end from syringe 11 be it is cylindric, which is inserted into sliding shoe 7, and sliding shoe 7 is equipped with bolt towards open side
72, bolt 72 is screwed into sliding shoe 7 and the end of connector 9 is pushed against in sliding shoe 7.
In the actual operation process, the first belt 62 is pulled, makes sliding shoe 7 far from needle stand 4, then syringe 11 is snapped fit onto more
In a clip assembly 42, the support portion of syringe 11 is against on the end face of the clip assembly 42 of 4 the top of needle stand, rotates turning part
411, it is fastened on turning part 411 on buckling plate 412, end of the needle core 12 with handle 121 will connect in sliding groove 51
Part 9 is set on the handle 121 of needle core 12, and the columned end of connector 9 is made upward, the first belt 62 to be pulled to make to slide vertically
Motion block 7 is mobile towards sample introduction needle 1, and the cylindric end of connector 9 enters in sliding shoe 7, rotates the bolt 72 on sliding shoe 7,
Be pushed against bolt 72 connector 9 in sliding shoe 7, so that needle core 12 be made to move up and down with sliding shoe 7, then passes through first
Driving assembly 6 and the second driving assembly 8 complete the suction sample and sample introduction of sample introduction needle 1.When needing to remove sample introduction needle 1, turning part is turned on
411, the connection between turning part 411 and buckling plate 412 is released, then rotate backward bolt 72, bolt 72 is made no longer to abut connector
9, sliding bar 23 is moved up, connector 9 is removed, is finally grabbed entire sample introduction needle 1 on square 112 from 42 thinning of clip assembly
Out.
The above is only the exemplary embodiment of the utility model, the protection model rather than limited the present invention
It encloses, the protection scope of the utility model is determined by the attached claims.
Claims (8)
1. a kind of mounting structure of sample introduction needle, including cabinet (2), the needle stand (4) being mounted in cabinet (2), sample introduction needle (1), institute
Stating sample introduction needle (1) includes syringe (11), the needle core (12) for having handle (121), it is characterized in that: the needle stand (4) is equipped with card
Connected components (42), the clip assembly (42) include two clamping bars (421), and two clamping bars (421) are symmetricly set on needle stand
(4) two sides, the distance between opposite side wall of two clamping bars (421) are equal to the diameter of syringe (11), two clamping bars (421)
End far from needle stand (4) extends towards, and the syringe (11) is connected between two clamping bars (421), the clip assembly
(42) have multiple, multiple clip assemblies (42) are uniformly distributed along the length direction of needle stand (4).
2. the mounting structure of a kind of sample introduction needle according to claim 1, it is characterized in that: being additionally provided with limit on the needle stand (4)
Hyte part (41), the limit assembly (41) include turning part (411), buckling plate (412), and turning part (411) are hinged on
The side of needle stand (4), the buckling plate (412) are located at the other side of needle stand (4), and turning part (411) is equipped with buckle (4111),
The buckling plate (412) is equipped with card slot (4121), and the buckle (4111) can snap fit onto buckling plate (412) after overturning
In card slot (4121).
3. a kind of mounting structure of sample introduction needle according to claim 2, it is characterized in that: turning part (411) towards into
The side of sample needle (1) is equipped with cushion (4112).
4. the mounting structure of a kind of sample introduction needle according to claim 1, it is characterized in that: the upper surface of the syringe (11) is set
Have supporting block (113), the cross section of the supporting block (113) is greater than the cross section of syringe (11), and the supporting block (113) is used for
It is against on the clip assembly (42) of needle stand (4) the top.
5. a kind of mounting structure of sample introduction needle according to claim 1 is slided it is characterized in that: being equipped with above the needle stand (4)
Dynamic slot (51), the sliding groove (51) is interior to be equipped with sliding shoe (7), and end of the needle core (12) with handle (121), which passes through, to be slided
Dynamic slot (51) side wall is simultaneously connect with sliding shoe (7)；It is additionally provided with the first driving assembly (6) for driving sliding shoe (7) mobile.
6. the mounting structure of a kind of sample introduction needle according to claim 5, it is characterized in that: the needle core (12) is equipped with connection
One end of part (9), the connector (9) is adapted with the end of handle (121) with needle core (12) and is connected to needle core (12)
On the end, connector (9) other end is cylindric and is inserted into sliding shoe (7) that the sliding shoe (7) is away from sliding seat
Side is equipped with bolt (72), and the bolt (72) is for pushing against the connector (9) being in sliding shoe (7).
7. the mounting structure of a kind of sample introduction needle according to claim 6, it is characterized in that: first driving assembly (6) wraps
Include the first belt (62), the first driving wheel (63), the first driven wheel (64), the first stepper motor (61), first driving wheel
(63) the same side at sliding groove (51) both ends is located at the first driven wheel (64), the first belt (62) coiling is in the first active
Between wheel (63) and the first driven wheel (64) and it is parallel to sliding groove (51), first belt (62) connect with sliding shoe (7),
First stepper motor (61) is for driving the first driving wheel (63) to be rotated.
8. a kind of mounting structure of sample introduction needle described in -7 any one according to claim 1, it is characterized in that: the sample introduction needle
(1) middle part is equipped with the square (112) for sample introduction needle (1) of conveniently taking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822058057.3U CN209416995U (en) | 2018-12-08 | 2018-12-08 | A kind of mounting structure of sample introduction needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822058057.3U CN209416995U (en) | 2018-12-08 | 2018-12-08 | A kind of mounting structure of sample introduction needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209416995U true CN209416995U (en) | 2019-09-20 |
Family
ID=67937054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822058057.3U Expired - Fee Related CN209416995U (en) | 2018-12-08 | 2018-12-08 | A kind of mounting structure of sample introduction needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209416995U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916583A (en) * | 2020-07-10 | 2022-01-11 | 郑州安诺科学仪器有限公司 | Knob type needle core flexible pressing device |
-
2018
- 2018-12-08 CN CN201822058057.3U patent/CN209416995U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916583A (en) * | 2020-07-10 | 2022-01-11 | 郑州安诺科学仪器有限公司 | Knob type needle core flexible pressing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190920 Termination date: 20211208 |