CN203123995U - Inspection straw - Google Patents
Inspection straw Download PDFInfo
- Publication number
- CN203123995U CN203123995U CN 201320156402 CN201320156402U CN203123995U CN 203123995 U CN203123995 U CN 203123995U CN 201320156402 CN201320156402 CN 201320156402 CN 201320156402 U CN201320156402 U CN 201320156402U CN 203123995 U CN203123995 U CN 203123995U
- Authority
- CN
- China
- Prior art keywords
- tube
- piston
- suction tube
- suction
- button
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Reciprocating Pumps (AREA)
- Sampling And Sample Adjustment (AREA)
- External Artificial Organs (AREA)
Abstract
The utility model discloses an inspection straw. The inspection straw comprises a press button, a press rod, a suction tube, a connecting tube and a liquid inlet tube, wherein the suction tube is connected with the press button through the press rod; the two ends of the connecting tube are respectively and hermetically connected with the suction tube and the liquid inlet tube; the suction tube is internally provided with a piston and a reset spring, and a plurality of positioning slots are formed in the suction tube; the inner diameter of each positioning slot is equal to the outer diameter of the press rod; the piston is arranged below the positioning slots; the reset spring is connected with the lower end of the piston; and each positioning slot is internally provided with a quantitative block. The inspection straw is unique in structure and the liquid suction volume can be accurately controlled.
Description
Technical field
The utility model belongs to technical field of medical instruments, is specifically related to a kind of check suction pipe.
Background technology
Existing check suction pipe is made of plastic tube usually, and the upper end of plastic tube is provided with air bag, by extruding gasbag liquid to be tested is sucked in the suction pipe.This suction pipe does not have scale, can not precisely control liquid absorption even if be provided with the scale sign.
The utility model content
The purpose of this utility model is at above-mentioned the deficiencies in the prior art, and a kind of check suction pipe of quantitative imbibition is provided.
For achieving the above object, technical solution adopted in the utility model is as follows.
A kind of check suction pipe comprises button, pressing lever, suction tube, tube connector and feed tube, and described suction tube is connected with described button by described pressing lever, and the two ends of described tube connector are tightly connected with described suction tube and described feed tube respectively; Be provided with piston, back-moving spring and some locating slots in the described suction tube, the internal diameter of described locating slot equates with the external diameter of described pressing lever, described piston be positioned at described locating slot below, described back-moving spring is connected with the lower end of described piston; Be provided with quantitative piece in the described locating slot.
Further, the width of described button is greater than the diameter of described suction tube.
The beneficial effects of the utility model are: check suction-pipe structure uniqueness of the present utility model, can precisely control liquid absorption.
Description of drawings
Fig. 1 is the overall structure schematic diagram of the utility model check suction pipe.
Fig. 2 is the structural representation of the attraction pipeline section of the utility model check suction pipe.
Among the figure, the 11-button; The 12-pressing lever; The 13-suction tube; The 14-tube connector; The 15-feed tube; The 21-locating slot; The quantitative piece of 22-; The 23-piston; The 24-back-moving spring.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples the utility model is described in further detail.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Check suction pipe of the present utility model as shown in Figure 1, comprise button 11, pressing lever 12, suction tube 13, tube connector 14 and feed tube 15, suction tube 13 is connected with button 11 by pressing lever 12, and the two ends up and down of tube connector 14 are tightly connected with suction tube 13 and feed tube 15 respectively.
The internal structure of suction tube as shown in Figure 2, be provided with piston 23, back-moving spring 24 and some locating slots 21 in the suction tube, the internal diameter of locating slot 21 equates with the external diameter of pressing lever 12, piston 23 be positioned at locating slot 21 below, back-moving spring 24 is connected with the lower end of piston 23; Be provided with quantitative piece 22 in the locating slot 21.
As preferably, the width of button 11 is greater than the diameter of suction tube 13.
Earlier pressing lever is inserted in the locating slot during use, press button then, pressure is delivered to piston by the quantitative piece in pressing lever and the locating slot, piston moves down and the gas in the feed tube is discharged, during release button, back-moving spring is with piston jack-up, and liquid to be checked is owing to the negative pressure in the feed tube enters feed tube.The length of pressing lever is fixed and the length of quantitative piece in the locating slot is inconsistent, because the width of button is greater than the diameter of described suction tube, when therefore pressing lever inserts different locating slots, amplitude that piston moves down is different and cause the different negative pressure of feed tube, and the liquid absorption that finally sucks feed tube is also different.
The above is preferred embodiment of the present utility model only, is not to limit practical range of the present utility model; If do not break away from spirit and scope of the present utility model, the utility model is made amendment or is equal to replacement, all should be encompassed in the middle of the protection domain of the utility model claim.
Claims (2)
1. a check suction pipe comprises button, pressing lever, suction tube, tube connector and feed tube, and wherein, described suction tube is connected with described button by described pressing lever, and the two ends of described tube connector are tightly connected with described suction tube and described feed tube respectively;
It is characterized in that:
Be provided with piston, back-moving spring and some locating slots in the described suction tube, the internal diameter of described locating slot equates with the external diameter of described pressing lever,
Described piston be positioned at described locating slot below, described back-moving spring is connected with the lower end of described piston;
Be provided with quantitative piece in the described locating slot.
2. check suction pipe according to claim 1 is characterized in that, the width of described button is greater than the diameter of described suction tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320156402 CN203123995U (en) | 2013-03-18 | 2013-03-18 | Inspection straw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320156402 CN203123995U (en) | 2013-03-18 | 2013-03-18 | Inspection straw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203123995U true CN203123995U (en) | 2013-08-14 |
Family
ID=48932022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320156402 Expired - Fee Related CN203123995U (en) | 2013-03-18 | 2013-03-18 | Inspection straw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203123995U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108380256A (en) * | 2018-05-12 | 2018-08-10 | 吴群欣 | A kind of quartz suction pipe |
-
2013
- 2013-03-18 CN CN 201320156402 patent/CN203123995U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108380256A (en) * | 2018-05-12 | 2018-08-10 | 吴群欣 | A kind of quartz suction pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20140318 |