CN211205983U - Nitrogen blowing instrument for detection - Google Patents
Nitrogen blowing instrument for detection Download PDFInfo
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- CN211205983U CN211205983U CN201921997240.8U CN201921997240U CN211205983U CN 211205983 U CN211205983 U CN 211205983U CN 201921997240 U CN201921997240 U CN 201921997240U CN 211205983 U CN211205983 U CN 211205983U
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- test tube
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- rack
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Abstract
The utility model discloses a nitrogen blowing instrument for detection, which comprises a bracket, wherein a blowing device is arranged above the bracket, a test tube rack is arranged below the bracket, and a water bath heating device is arranged at the bottom of the bracket; the test tube rack is provided with a plurality of placing units, and each placing unit comprises a test tube hole, a test tube support and a lifting knob; the test tube support is positioned in the test tube hole, one side of the test tube support is connected with a lifting rack, and the lifting rack is vertically arranged; the lifting knob is rotatably arranged on the side face of the test tube rack, a lifting gear is arranged at the tail end of the lifting knob, and the lifting gear is correspondingly matched with the lifting rack; the lifting knob rotates and drives the test tube holder to vertically displace. The utility model discloses make things convenient for operating personnel to adjust the relative distance of blowing needle syringe needle and test tube liquid level, and judge the liquid level height of test tube inside more easily for prior art.
Description
Technical Field
The utility model relates to a chemical analysis device especially relates to a nitrogen blows appearance for detection.
Background
The nitrogen blowing instrument is an experimental device for blowing nitrogen into the surface of a heating sample to concentrate the sample. The nitrogen blowing instrument has the advantages of convenient operation, time and labor saving, easy control and the like, and is widely applied to the fields of biology, food, pharmacy and the like.
In the working process of the nitrogen blowing instrument, the volatilization rate of the solvent in the sample test tube is related to the relative distance between the needle head of the blowing needle and the liquid level, and after the solvent in the sample test tube is volatilized, the liquid level in the test tube is reduced, so that the relative distance between the needle head and the liquid level is changed. Based on the above two points, it is necessary to control and adjust the relative distance between the needle and the liquid level in the test tube. The reciprocating of control syringe needle among the prior art comes the adjustment distance, but the lower extreme of sample test tube is placed more and is heated in the water bath, and when the liquid level in the test tube descends, because the interference of water bath, hardly accurate judgement syringe needle and the relative distance of test tube liquid level brought the inconvenience in operation for the experimenter.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the not enough of existence among the prior art, the utility model provides a detect and blow the appearance with nitrogen makes things convenient for operating personnel adjustment to blow the relative distance of needle syringe needle and the liquid level in the test tube, and judges the liquid level of test tube inside more easily for prior art.
The technical scheme is as follows: in order to achieve the purpose, the nitrogen blowing instrument for detection comprises a support, wherein a blowing device is arranged above the support, a test tube rack is arranged below the support, and a water bath heating device is arranged at the bottom of the support; the test tube rack is provided with a plurality of placing units, and each placing unit comprises a test tube hole, a test tube support and a lifting knob; the test tube support is positioned in the test tube hole, one side of the test tube support is connected with a lifting rack, and the lifting rack is vertically arranged; the lifting knob is rotatably arranged on the side face of the test tube rack, a lifting gear is arranged at the tail end of the lifting knob, and the lifting gear is correspondingly matched with the lifting rack; the lifting knob rotates and drives the test tube holder to vertically displace.
Further, the test tube rack is circular, and the plurality of test tube holes are arranged at the edge of the test tube rack to form a circle.
Furthermore, the outer side of the test tube rack is rotatably connected with a reset ring, a plurality of reset holes are formed in the lateral outline of the reset ring, the reset holes correspond to the placing units one by one, and the knob end of the lifting knob is located in the reset holes; the orifice of the reset hole comprises a positioning section and a reset section; the positioning sections on the plurality of reset holes are all positioned on the same positioning circle, the reset sections protrude outwards compared with the positioning circle, and smooth transition is formed between the reset sections and the positioning sections; a reset spring is arranged between the lifting knob and the test tube rack in an abutting mode, and the end of the knob abuts against the orifice of the reset hole; the test tube carrier is characterized in that the reset ring rotates, the knob end moves to the reset section from the positioning section, the lifting knob is integrally pushed outwards, the lifting gear is separated from the lifting rack, and the test tube carrier descends and resets.
Further, the test-tube rack with reset ring is last to be provided with respectively and to end the groove and to end the hole of changeing, still be provided with on the side profile surface of reset ring and end the commentaries on classics bolt, it passes to end the commentaries on classics hole inserts and establishes end in the groove.
Further, the test tube holder comprises a sleeve ring and a support tube ring, the sleeve ring and the support tube ring are concentrically arranged on one side of the lifting rack, and the sleeve ring is positioned above the support tube ring; the outer diameter of the sleeve ring is smaller than the inner diameter of the test tube hole, the outer diameter of the sleeve ring is larger than the inner diameter of the test tube hole, and an elastic cushion layer is arranged on the lower contour surface of the sleeve ring.
Furthermore, the upper contour surface of the pipe supporting ring inclines towards the inner side of the ring at an angle, and an elastic cushion layer is covered on the upper contour surface of the pipe supporting ring.
Has the advantages that: the utility model discloses a nitrogen-blowing instrument for detection, through the cooperation of gear and rack drive the test tube to rise to change the relative distance of single test tube liquid level and its corresponding gas needle, because make the test tube rise rather than the gas needle descends, consequently be difficult for receiving the interference of water bath, judge the liquid level height in the test tube more easily; the test-tube rack is provided with the reset ring outward, and after accomplishing the sample concentration, can once only make all test tube support decline through rotating the reset ring and reset, it is more convenient to use.
Drawings
FIG. 1 is an overall view of the present invention;
FIG. 2 is a first schematic diagram of a placing unit;
FIG. 3 is a second schematic view of a placing unit;
fig. 4 is a three-dimensional schematic view of a reset ring;
fig. 5 is a plan view of a reset ring.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The nitrogen blowing instrument for detection as shown in the attached figures 1 to 5 comprises a support 1, wherein an air blowing device 2 is arranged above the support 1, a test tube rack 3 is arranged below the support 1, a water bath heating device 4 is arranged at the bottom of the support 1, and the air blowing device 2 and the test tube rack 3 on the support 1 can be adjusted in position up and down; the test tube rack 3 is provided with a plurality of placing units 5, each placing unit 5 is used for correspondingly placing a test tube sample, and each placing unit 5 comprises a test tube hole 6, a test tube holder 7 and a lifting knob 8; the test tube carrier 7 is positioned in the test tube hole 6 and used for limiting and clamping a test tube, one side of the test tube carrier 7 is connected with a lifting rack 9, and the lifting rack 9 is vertically arranged; the lifting knob 8 is rotatably arranged on the side surface of the test tube rack 3, a cavity is formed in the side surface of the test tube rack 3, the tail end of the lifting knob 8 is located in the cavity, a lifting gear 10 is arranged at the tail end of the lifting knob 8, and the lifting gear 10 is correspondingly matched with the lifting rack 9; when the lifting knob 8 rotates, the lifting gear 9 drives the lifting rack 9 to move up and down and drive the test tube holder 7 to move vertically, so that the height of the test tube is adjusted, and the relative distance between the liquid level in the test tube and the air needle head is changed. Because the utility model discloses a make the test tube rise and the relative distance that liquid level and syringe needle were adjusted to the mode that the gas needle descends, consequently be difficult for receiving the interference of water bath, judge the liquid level height of test tube inside more easily, convenient operation.
The test-tube rack 3 is circular, and is a plurality of test-tube hole 6 is in 3 edges of test-tube rack are arranged into circularly, are difficult for arousing visual interference between the sample test tube, make things convenient for the experimenter to operate the test tube.
A reset ring 11 is rotatably connected to the outer side of the test tube rack 3, the reset ring 11 is concentrically arranged with the test tube rack 3, and the reset ring 11 can rotate along the outer edge of the test tube rack 3; a plurality of reset holes 12 are formed in the lateral profile of the reset ring 11, the reset holes 12 correspond to the placing units 5 one by one, and the knob end 21 of the lifting knob 8 is located in the reset holes 12.
The orifice of the reset hole 12 comprises a positioning section 13 and a resetting section 14; the positioning sections 13 on the plurality of reset holes 12 are all located on the same positioning circle 15, the reset section 14 protrudes outwards compared with the positioning circle 15, and the reset section 14 and the positioning section 15 are in smooth transition; a return spring 16 is arranged between the lifting knob 8 and the test tube rack 3 in a propping manner, and the knob end 21 props against the orifice of the return hole 12; when the knob end 21 abuts against the positioning section 13, the lifting gear 10 is matched with the lifting rack 9, the return spring 16 applies elastic force to prevent the lifting gear 10 and the lifting rack 9 from being separated, and the lifting gear 10 is used as a supporting part of the test tube holder 7; when the knob end 21 abuts against the reset section 14, the lifting gear 10 and the lifting rack 9 are separated from each other, and the test tube holder 7 loses support and falls; therefore, when the reset ring 11 rotates, the knob end 21 will move from the positioning section 13 to the reset section 14, so that the lifting knob 8 is pushed out outward as a whole, the lifting gear 10 is disengaged from the lifting rack 9, and the test tube holder 7 is lowered and reset. The smooth transition between the reset segment 14 and the positioning segment 15 is to facilitate the smooth movement of the knob end 21 at the opening of the reset bore 12.
The test-tube rack 3 with it ends commentaries on classics groove 20 and the hole 22 that splines to be provided with respectively on the reset ring 11, still be provided with on the side profile surface of reset ring 11 and end commentaries on classics bolt 19, it passes to end commentaries on classics bolt 19 end commentaries on classics hole 22 is inserted and is established end commentaries on classics inslot 2, make reset ring 11 with test-tube rack 3 is spacing each other, and unable relative rotation prevents at the concentrated in-process of sample, reset ring 11 rotates and leads to the test tube tenesmus to destroy the experiment.
The test tube holder 7 comprises a sleeve ring 17 and a support tube ring 18, the sleeve ring 17 and the support tube ring 18 are concentrically arranged on one side of the lifting rack 9 and are matched with each other to support a test tube, the sleeve ring 17 is positioned above the support tube ring 18, the sleeve ring 17 is sleeved on the outer tube wall of the test tube to be horizontally limited, and the support tube ring 18 is positioned at the bottom end of the test tube to vertically support the test tube; the external diameter of pipe support ring 18 is less than the internal diameter of test tube hole 6, the external diameter of casing ring 17 is greater than the internal diameter of test tube hole 6 makes test tube support 7 can with the help of casing ring 17 card is established the upper surface of test tube rack 3 is unlikely directly to drop from test tube hole 6, just the lower profile surface of casing ring 18 is provided with the elastic cushion layer, and when the test tube held in the palm 7 tenesmus that resets, the elastic cushion layer with the upper surface collision of test tube rack 3 plays buffering absorbing effect.
The inboard that the last profile face of pipe carrier ring 18 is the angle slope to the ring, just the last profile face of pipe carrier ring 18 coats and is equipped with the elastic cushion layer, makes pipe carrier ring 18 and sample test tube below more laminate, and the sample test tube is in more stable in the test tube support 7.
The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (6)
1. The utility model provides a nitrogen blows appearance for detection which characterized in that: the device comprises a support (1), wherein an air blowing device (2) is arranged above the support (1), a test tube rack (3) is arranged below the support (1), and a water bath heating device (4) is arranged at the bottom of the support (1); the test tube rack (3) is provided with a plurality of placing units (5), and each placing unit (5) comprises a test tube hole (6), a test tube support (7) and a lifting knob (8); the test tube carrier (7) is positioned in the test tube hole (6), one side of the test tube carrier (7) is connected with a lifting rack (9), and the lifting rack (9) is vertically arranged; the lifting knob (8) is rotatably arranged on the side face of the test tube rack (3), a lifting gear (10) is arranged at the tail end of the lifting knob (8), and the lifting gear (10) is correspondingly matched with the lifting rack (9); the lifting knob (8) rotates and drives the test tube holder (7) to vertically displace.
2. The nitrogen blowing instrument for detection according to claim 1, characterized in that: the test tube rack (3) is circular, and the plurality of test tube holes (6) are arranged at the edge of the test tube rack (3) to form a circle.
3. The nitrogen blowing instrument for detection according to claim 2, characterized in that: the outer side of the test tube rack (3) is rotatably connected with a reset ring (11), a plurality of reset holes (12) are formed in the lateral outline of the reset ring (11), the reset holes (12) correspond to the placing units (5) one by one, and the knob end (21) of the lifting knob (8) is located in the reset holes (12); the orifice of the reset hole (12) comprises a positioning section (13) and a reset section (14); positioning sections (13) on the plurality of reset holes (12) are all located on the same positioning circle (15), the reset sections (14) protrude outwards compared with the positioning circle (15), and the reset sections (14) and the positioning sections (13) are in smooth transition; a return spring (16) is arranged between the lifting knob (8) and the test tube rack (3) in a propping manner, and the knob end (21) is propped against the orifice of the return hole (12); reset ring (11) are rotatory, knob end (21) are followed location section (13) move reset section (14), whole outside the propping out of lift knob (8), lifting gear (10) break away from with lifting rack (9), test tube holder (7) descend and reset.
4. The nitrogen blowing instrument for detection according to claim 3, characterized in that: the test-tube rack (3) with be provided with respectively on reset ring (11) and end commentaries on classics groove (20) and end commentaries on classics hole (22), still be provided with on the side profile surface of reset ring (11) and end commentaries on classics bolt (19), it passes to end commentaries on classics bolt (19) end commentaries on classics hole (22) and insert and establish in ending commentaries on classics groove (20).
5. The nitrogen blowing instrument for detection according to claim 1, characterized in that: the test tube support (7) comprises a sleeve ring (17) and a support ring (18), the sleeve ring (17) and the support ring (18) are concentrically arranged on one side of the lifting rack (9), and the sleeve ring (17) is positioned above the support ring (18); the outer diameter of the cannula ring (18) is smaller than the inner diameter of the test tube hole (6), the outer diameter of the cannula ring (17) is larger than the inner diameter of the test tube hole (6), and an elastic cushion layer is arranged on the lower contour surface of the cannula ring (17).
6. The nitrogen blowing instrument for detection according to claim 5, wherein: the upper contour surface of the carrier ring (18) inclines towards the inner side of the ring at an angle, and an elastic cushion layer is covered on the upper contour surface of the carrier ring (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921997240.8U CN211205983U (en) | 2019-11-19 | 2019-11-19 | Nitrogen blowing instrument for detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921997240.8U CN211205983U (en) | 2019-11-19 | 2019-11-19 | Nitrogen blowing instrument for detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211205983U true CN211205983U (en) | 2020-08-07 |
Family
ID=71855188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921997240.8U Active CN211205983U (en) | 2019-11-19 | 2019-11-19 | Nitrogen blowing instrument for detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211205983U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115993284A (en) * | 2023-03-24 | 2023-04-21 | 成都圣恩生物科技股份有限公司 | Nitrogen blowing instrument |
-
2019
- 2019-11-19 CN CN201921997240.8U patent/CN211205983U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115993284A (en) * | 2023-03-24 | 2023-04-21 | 成都圣恩生物科技股份有限公司 | Nitrogen blowing instrument |
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