CN214585158U - Sampling device for obtaining samples - Google Patents
Sampling device for obtaining samples Download PDFInfo
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- CN214585158U CN214585158U CN202120506565.2U CN202120506565U CN214585158U CN 214585158 U CN214585158 U CN 214585158U CN 202120506565 U CN202120506565 U CN 202120506565U CN 214585158 U CN214585158 U CN 214585158U
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- 238000005070 sampling Methods 0.000 title claims abstract description 46
- 238000000605 extraction Methods 0.000 claims abstract description 29
- 238000009434 installation Methods 0.000 claims abstract description 13
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 238000007906 compression Methods 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 abstract description 2
- 238000001467 acupuncture Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000000243 solution Substances 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a sampling device for obtaining sample, relate to experiment auxiliary assembly technical field, including the installation scute, the inner wall of installation scute right side is fixed with a slip track from top to bottom, the slip track top card is equipped with the upper sliding block that can slide, the slip track below card is equipped with the lower sliding block that can slide, be provided with the support subassembly on the upper sliding block, set up the lower support subassembly on the lower sliding block, the installation scute front side inner wall is provided with power component, power component bottom is connected with a lead screw that break through the support subassembly on, the mutual closure of upper support subassembly and lead screw; wherein an elastic component is arranged between the upper support component and the lower support component; the bottom of the lower supporting component is provided with a limiting body, the upper supporting component is provided with an extraction flow path, and the bottom of the extraction flow path is connected with a sampling needle. The utility model has the advantages of realize automatic acupuncture, accurate stable and high security.
Description
Technical Field
The utility model relates to an experiment auxiliary assembly technical field, concretely relates to a sampling device for acquireing sample.
Background
In a gas chromatographic analysis (hereinafter referred to as GC), in a GC process of a propellant stability test, a medical needle cylinder and a manual sample injection mode are used in a gas sample extraction and sample injection link, so that a test result has large fluctuation, poor test repeatability seriously affects objectivity of result analysis, and how to change complicated manual sample injection which is easy to make mistakes and has high error into ultrahigh-precision automatic sample injection is a research direction of technicians in the field.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model provides a sampling device for acquireing the sample.
A sampling device for obtaining a sample comprises an installation angle plate, wherein a sliding track is fixed on the inner wall of the right side of the installation angle plate from top to bottom, an upper sliding block capable of sliding is clamped above the sliding track, a lower sliding block capable of sliding is clamped below the sliding track, an upper supporting assembly is arranged on the upper sliding block, a lower supporting assembly is arranged on the lower sliding block, a power assembly is arranged on the inner wall of the front side of the installation angle plate, the bottom of the power assembly is connected with a lead screw penetrating through the upper supporting assembly, the extending direction of the lead screw is the same as that of the sliding track, and the upper supporting assembly and the lead screw are locked with each other; an elastic assembly is arranged between the upper support assembly and the lower support assembly, a blocking piece is arranged at the bottom of the sliding track, and the blocking piece is used for limiting the minimum height of the lower sliding block; the utility model discloses a sample extraction device, including lower support subassembly, upper support subassembly, lower support subassembly, upper support subassembly upper bracket is connected with the sample syringe needle, the lower support subassembly bottom is provided with spacing body, spacing body is used for supporting treats extraction sample bottle top, the upper support subassembly upper bracket is equipped with the extraction flow path, extraction flow path bottom is connected with the sample syringe needle, the sample syringe needle extends and wears out spacing body. In the whole device, the upper sliding block and the lower sliding block can move along the sliding track, the upper supporting assembly is integrated with the upper sliding block, and the lower supporting assembly is integrated with the lower sliding block; specifically, when sampling, the whole sampling device is positioned above a sample bottle to be extracted, the power assembly is started firstly, the power assembly drives the screw rod to rotate forwards, the screw rod rotates forwards to drive the upper supporting assembly locked with the screw rod to move downwards along the sliding track, under the action of the elastic assembly, the upper supporting assembly can push the lower supporting assembly to move downwards along the sliding track until the whole limiting body props against the sample bottle to be extracted, at the moment, the lower supporting assembly cannot move, so that the whole elastic assembly is continuously compressed during the continuous downward movement of the upper supporting assembly, meanwhile, the distance between the sampling needle head and the sample bottle to be extracted is closer and closer until the sampling needle head pricks into the sample bottle to be extracted, so that gas in the sample bottle to be extracted is extracted by utilizing the extraction flow path, after sampling is completed, the force applying assembly is started again, the power assembly drives the screw rod to rotate backwards, the screw rod drives the upper supporting assembly locked with the screw rod to move upwards along the sliding track after rotating backwards, in a certain period of time, because elastic component's elastic force effect, lower supporting component can not remove, and the spacing body supports all the time and treats extraction sample bottle to let the sample syringe needle take out and treat extraction sample bottle, until last supporting component along the certain distance of slip track upward movement after, go up supporting component and drive lower supporting component upward movement through elastic component, thereby let spacing body break away from and treat extraction sample bottle.
Preferably, the upper support assembly comprises: the upper supporting angle plate is arranged on the left side surface of the upper sliding block; and a lower support frame erected at the bottom of the upper support angle plate; the upper supporting angle plate is provided with a screw nut, the screw rod penetrates through the screw nut and is locked with the screw nut, the sampling needle is arranged on the lower supporting frame, and the elastic assembly is arranged between the lower supporting frame and the lower supporting assembly. The screw nut and the screw rod are in threaded fit.
Preferably, the elastic assembly comprises: a guide bar disposed on the lower support assembly and extending into the interior of the lower support frame; and a compression spring sleeved on the guide rod; wherein the compression spring is located between the lower support frame bottom surface and the lower support assembly top surface, the lower support frame being movable along the guide bar towards the lower support assembly. After the lower support frame moves towards the lower support assembly along the guide rod, the compression spring is compressed, the elastic force is increased, and otherwise, the elastic force is reduced.
Preferably, the guide rod top is provided with the screens head, the screens head is located inside the lower carriage. Through the effect of screens head, can guarantee that the lower carriage can not break away from the guide bar top.
Preferably, the sampling needle comprises: the fixed pipe head is fixed on the lower support frame; and a needle tube communicated with the bottom of the fixed tube head; the top of the fixed pipe head is communicated with the extraction flow path, and the needle tube extends out of the limiting body. The needle tube is pricked into or drawn out of the sample bottle to be extracted.
Preferably, a displacement sensor is arranged on the lower support frame, and the displacement sensor is opposite to the clamping head and used for detecting the displacement of the clamping head. The displacement sensor can judge whether the whole sampling device successfully props against the sample bottle to be extracted or not through the displacement of the clamping head; wherein, the sensor can cooperate with the encoder, and when the sample bottle had remained to be drawn to the below, the sensor had corresponding feedback, if do not have the feedback then prove that the below has not placed the sample, and equipment can indicate empty appearance and shut down.
Preferably, an electromagnetic on-off valve provided in the upper support assembly is connected to the extraction flow path. The extraction flow path can be switched on and off by an electromagnetic on-off valve.
The beneficial effects of the utility model are embodied in:
in the utility model, in the whole sampling process, the stable extraction of the sample bottle to be extracted is realized by the alternative movement of the upper supporting component and the lower supporting component, furthermore, the elastic component is arranged between the upper supporting component and the lower supporting component, on one hand, the accuracy can be improved in the process of propping against the sample bottle to be extracted, the empty prick and the prick error are prevented, on the basis of ensuring the full contact between the limiting body and the top of the sample bottle to be extracted, the reliable prick of the sampling needle head is realized, on the other hand, the stability can be improved in the process of extracting the sample bottle to be extracted, the limiting body can be separated from the top of the sample bottle to be extracted only after the sampling needle head leaves the whole sample bottle to be extracted, and when the sampling needle head is taken out from the sample bottle to be extracted, the sample bottle to be extracted is taken up due to the friction force existing between the sampling needle head and the top of the sample bottle to be extracted, and cause a malfunction.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a perspective view of the utility model and a sample bottle to be extracted;
FIG. 2 is a perspective view of the present invention without an upper support assembly;
fig. 3 is a perspective view of a portion of the structure of fig. 2 according to the present invention.
Reference numerals:
1-installation angle plate, 11-sliding track, 111-blocking piece, 12-upper sliding block, 13-lower sliding block, 2-upper supporting component, 21-upper supporting angle plate, 211-lead screw nut, 22-lower supporting frame, 3-lower supporting component, 31-limiting body, 4-power component, 5-lead screw, 6-elastic component, 61-guide rod, 611-clamping head, 62-compression spring, 7-extraction flow path, 71-electromagnetic on-off valve, 8-sampling needle head, 81-fixed tube head, 82-needle tube, 9-displacement sensor and 10-sample bottle to be extracted.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by the ordinary operator in this field without creative work belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "up", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are conventionally placed when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 3, a sampling device for obtaining a sample includes an installation angle plate 1, a sliding rail 11 is fixed on the inner wall of the right side of the installation angle plate 1 from top to bottom, an upper sliding block 12 capable of sliding is clamped above the sliding rail 11, a lower sliding block 13 capable of sliding is clamped below the sliding rail 11, an upper supporting component 2 is arranged on the upper sliding block 12, a lower supporting component 3 is arranged on the lower sliding block 13, a power component 4 is arranged on the inner wall of the front side of the installation angle plate 1, a screw rod 5 penetrating through the upper supporting component 2 is connected to the bottom of the power component 4, the extending direction of the screw rod 5 is the same as the extending direction of the sliding rail 11, and the upper supporting component 2 and the screw rod 5 are locked with each other; an elastic component 6 is arranged between the upper support component 2 and the lower support component 3, a baffle 111 is arranged at the bottom of the sliding track 11, and the baffle 111 is used for limiting the minimum height of the lower sliding block 13; the bottom of the lower supporting component 3 is provided with a limiting body 31, the limiting body 31 is used for supporting the top of the sample bottle 10 to be extracted, the upper support component 2 is provided with an extraction flow path 7, the bottom of the extraction flow path 7 is connected with a sampling needle 8, and the sampling needle 8 extends out of the limiting body 31.
In the present embodiment, it should be noted that, in the whole device, the upper sliding block 12 and the lower sliding block 13 are both capable of moving along the sliding track 11, while the upper support assembly 2 is integrated with the upper sliding block 12, while the lower support assembly 3 is integrated with the lower sliding block 13; specifically, when sampling, the whole sampling device is positioned above a sample bottle 10 to be extracted, the power assembly 4 is started firstly, the power assembly 4 drives the screw rod 5 to rotate forwards, the screw rod 5 rotates forwards and then drives the upper supporting assembly 2 locked with the screw rod to move downwards along the sliding track 11, under the action of the elastic assembly 6, the upper supporting assembly 2 can push the lower supporting assembly 3 to move downwards along the sliding track 11 until the whole limiting body 31 abuts against the sample bottle 10 to be extracted and limits the top of the sample bottle 10, at the moment, because the lower supporting assembly 3 cannot move, the whole elastic assembly 6 is continuously compressed during the continuous downward movement of the upper supporting assembly 2, meanwhile, the distance between the sampling needle 8 and the sample bottle 10 to be extracted is closer and closer until the sampling needle 8 is pricked into the sample bottle 10 to be extracted, so that the gas in the sample bottle 10 to be extracted is extracted by using the extraction flow path 7, and after sampling is completed, the assembly is started again, the power component 4 drives the screw rod 5 to rotate reversely, the screw rod 5 drives the upper supporting component 2 locked with the screw rod 5 to move upwards along the sliding track 11 after rotating reversely, the lower supporting component 3 cannot move due to the elastic action of the elastic component 6 in a certain period of time, the limiting body 31 always supports against the sample bottle 10 to be extracted, the sampling needle 8 is allowed to extract the sample bottle 10 to be extracted, and the upper supporting component 2 drives the lower supporting component 3 to move upwards through the elastic component 6 until the upper supporting component 2 moves upwards along the sliding track 11 for a certain distance, so that the limiting body 31 is separated from the sample bottle 10 to be extracted; in conclusion, in the whole sampling process, the stable extraction of the sample bottle 10 to be extracted is realized by the alternative movement of the upper supporting component 2 and the lower supporting component 3, and further, the elastic component 6 is arranged between the upper supporting component 2 and the lower supporting component 3, so that on one hand, the accuracy can be improved in the process of propping against the sample bottle 10 to be extracted, the empty prick and the prick error are prevented, on the basis of ensuring that the limiting body 31 is fully contacted with the top of the sample bottle 10 to be extracted, the reliable prick of the sampling needle 8 is realized, on the other hand, the stability can be improved in the process of extracting the sample bottle 10 to be extracted, the limiting body 31 is separated from the top of the sample bottle 10 to be extracted after the sampling needle 8 leaves the whole sample bottle 10 to be extracted, and the sample bottle 10 to be extracted is prevented from being taken up due to the friction force existing between the sampling needle 8 and the top of the sample bottle 10 to be extracted, and cause a malfunction.
Specifically, the upper support assembly 2 includes: upper support angle plate 21 provided on the left side surface of upper slide block 12; and a lower support frame 22 erected at the bottom of the upper support angle plate 21; wherein, the upper supporting angle plate 21 is provided with a screw nut 211, the screw 5 passes through the screw nut 211 and is locked with the screw nut 211, the sampling needle 8 is arranged on the lower supporting frame 22, and an elastic component 6 is arranged between the lower supporting frame 22 and the lower supporting component 3.
In the present embodiment, the screw nut 211 is screwed to the screw 5.
Specifically, the elastic member 6 includes: a guide bar 61 provided on the lower support assembly 3 and extending into the interior of the lower support frame 22; and a compression spring 62 fitted over the guide rod 61; wherein the compression spring 62 is located between the bottom surface of the lower support frame 22 and the top surface of the lower support assembly 3, and the lower support frame 22 can move towards the lower support assembly 3 along the guide rod 61.
In the present embodiment, after the lower support frame 22 moves toward the lower support unit 3 along the guide rod 61, the compression spring 62 is compressed, and the elastic force increases, whereas the elastic force decreases.
Specifically, the top of the guide rod 61 is provided with a retaining head 611, and the retaining head 611 is located inside the lower supporting frame 22.
In the present embodiment, the function of the positioning head 611 can ensure that the lower support frame 22 does not come off the top of the guide rod 61.
Specifically, the sampling needle 8 includes: a fixed pipe head 81 fixed on the lower support frame 22; and a needle tube 82 connected to the bottom of the fixed tube head 81; wherein the top of the fixed pipe head 81 is connected with the extraction flow path 7, and the needle tube 82 extends out of the limiting body 31.
In the present embodiment, it should be noted that the needle tube 82 is inserted into or withdrawn from the sample bottle 10 to be extracted.
Specifically, the lower support frame 22 is provided with a displacement sensor 9, and the displacement sensor 9 is aligned with the position clamping head 611 and used for detecting the displacement of the position clamping head 611; wherein, the sensor can cooperate with the encoder, and when the sample bottle had remained to be drawn to the below, the sensor had corresponding feedback, if do not have the feedback then prove that the below has not placed the sample, and equipment can indicate empty appearance and shut down.
In this embodiment, it should be noted that the displacement sensor 9 can determine whether the whole sampling device successfully abuts against the sample bottle 10 to be extracted by the displacement amount of the positioning head 611.
Specifically, an electromagnetic on-off valve 71 provided in the upper support assembly 2 is connected to the extraction flow path 7.
In the present embodiment, the electromagnetic on-off valve 71 can be used to turn on and off the extraction flow path 7.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (7)
1. A sampling device for obtaining samples is characterized by comprising an installation angle plate, wherein a sliding track is fixed on the inner wall of the right side of the installation angle plate from top to bottom, an upper sliding block capable of sliding is clamped above the sliding track, a lower sliding block capable of sliding is clamped below the sliding track, an upper supporting component is arranged on the upper sliding block, a lower supporting component is arranged on the lower sliding block, a power component is arranged on the inner wall of the front side of the installation angle plate, a lead screw penetrating through the upper supporting component is connected to the bottom of the power component, the extending direction of the lead screw is the same as the extending direction of the sliding track, and the upper supporting component and the lead screw are locked with each other; wherein,
an elastic assembly is arranged between the upper support assembly and the lower support assembly, a blocking piece is arranged at the bottom of the sliding track, and the blocking piece is used for limiting the minimum height of the lower sliding block;
the utility model discloses a sample extraction device, including lower support subassembly, upper support subassembly, lower support subassembly, upper support subassembly upper bracket is connected with the sample syringe needle, the lower support subassembly bottom is provided with spacing body, spacing body is used for supporting treats extraction sample bottle top, the upper support subassembly upper bracket is equipped with the extraction flow path, extraction flow path bottom is connected with the sample syringe needle, the sample syringe needle extends and wears out spacing body.
2. The sampling device for taking a sample according to claim 1, wherein the upper support assembly comprises:
the upper supporting angle plate is arranged on the left side surface of the upper sliding block; and
the lower support frame is erected at the bottom of the upper support angle plate; wherein,
the upper supporting angle plate is provided with a screw nut, the screw rod penetrates through the screw nut and is locked with the screw nut, the sampling needle head is arranged on the lower supporting frame, and the elastic assembly is arranged between the lower supporting frame and the lower supporting assembly.
3. The sampling device for taking a sample according to claim 2, wherein the resilient assembly comprises:
a guide bar disposed on the lower support assembly and extending into the interior of the lower support frame; and
the compression spring is sleeved on the guide rod; wherein,
the compression spring is located between the bottom surface of the lower support frame and the top surface of the lower support assembly, and the lower support frame can move towards the lower support assembly along the guide rod.
4. The sampling device for obtaining a sample according to claim 3, wherein a position-retaining head is arranged at the top of the guide rod, and the position-retaining head is positioned inside the lower support frame.
5. The sampling device for obtaining a sample according to claim 4, wherein the sampling needle comprises:
the fixed pipe head is fixed on the lower support frame; and
a needle tube at the bottom of the fixed tube head is communicated; wherein,
the top of the fixed pipe head is communicated with the extraction flow path, and the needle tube extends out of the limiting body.
6. The sampling device for obtaining samples according to claim 4, wherein a displacement sensor is disposed on the lower support frame, and the displacement sensor faces the position-clamping head for detecting the displacement of the position-clamping head.
7. A sampling device according to any one of claims 1 to 6, wherein an electromagnetic on-off valve provided in the upper support assembly is connected to the extraction flow path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120506565.2U CN214585158U (en) | 2021-03-10 | 2021-03-10 | Sampling device for obtaining samples |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120506565.2U CN214585158U (en) | 2021-03-10 | 2021-03-10 | Sampling device for obtaining samples |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214585158U true CN214585158U (en) | 2021-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120506565.2U Active CN214585158U (en) | 2021-03-10 | 2021-03-10 | Sampling device for obtaining samples |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214585158U (en) |
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2021
- 2021-03-10 CN CN202120506565.2U patent/CN214585158U/en active Active
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