CN217931003U

CN217931003U - One-way valve straw

Info

Publication number: CN217931003U
Application number: CN202221924949.7U
Authority: CN
Inventors: 封显葵; 叶志龙; 藤野和憲; 岑翠连
Original assignee: Guangzhou Secure Packaging Co ltd
Current assignee: Guangzhou Secure Packaging Co ltd
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2022-11-29
Anticipated expiration: 2032-07-25

Abstract

The utility model discloses a one-way valve suction pipe, which comprises a suction pipe head, wherein the bottom end of the suction pipe head is provided with a connector; the one-way valve is arranged at the bottom of the inner wall of the suction pipe head; the one-way valve comprises an air guide hole groove, a fixed support and a one-way diaphragm, the outer wall of the air guide hole groove is fixedly connected with the inner wall of the bottom of the suction pipe head, and the one-way diaphragm is arranged between the bottom end of the air guide hole groove and the top end of the fixed support. The utility model discloses utilize one-way valve member's design to solve the problem that gas collection bag leaks gas, its design is inside through the air guide hole groove at direct straw, the structure of fixing support and one-way diaphragm combines, make gas blow away the diaphragm through the air guide hole groove and get into in the bag, it is reverse, gas is when rushing to the diaphragm by external shock in the bag, the air guide hole groove blocks the diaphragm and moves outward, thereby prevent that the inside gas of sack is revealed toward the outside, can ensure like this that the gas of collecting in the collection bag can not leak, make the detection gas collect more, the inspection of being more convenient for.

Description

One-way valve straw

Technical Field

The utility model relates to the field of packaging, in particular to check valve straw.

Background

The collecting bag is used for collecting the expired gas of a patient in the medical detection operation, and then the gas in the collecting bag is detected and tested, and the collecting bag is provided with a straw with a top gas collecting opening besides the sealing bag body;

the straw is mostly straight-through type for the gas collection bag in the existing market, and gas directly admits air through the straw towards the direction of admitting air, must immediately spiral cover the mouth of pipe of covering tightly, otherwise the inside gas of sack can reveal through directly leading the straw, can not reach the purpose of collecting gas, and immediately spiral cover also brings the inconvenience in actual operation, just so can cause the gas collection volume to reduce for detect gas content reduces, has increased the detection degree of difficulty.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a check valve straw to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a one-way valve straw, comprising:

the bottom end of the pipette head is provided with a connector;

the one-way valve is arranged at the bottom of the inner wall of the pipette head;

the one-way valve comprises an air guide hole groove, a fixed support and a one-way diaphragm, the outer wall of the air guide hole groove is fixedly connected with the inner wall of the bottom of the suction pipe head, and the one-way diaphragm is arranged between the bottom end of the air guide hole groove and the top end of the fixed support.

Preferably, the side of the bottom end of the straw head is fixedly connected with the side of the top end of the connector, and the outer wall of the connector is provided with threads.

Preferably, the outer wall in the middle of the pipette head is provided with two sets of outer screw layers, and the outer wall of the bottom of the pipette head is sleeved with a limiting lantern ring.

Preferably, the inner chamber of straw head bottom sets up to the arc, fixing support's outer wall and the inner chamber wall fixed connection of straw head bottom, two direction slide bars of avris fixedly connected with on fixing support top, the gas pocket has been seted up at the middle part on fixing support top.

Preferably, the outer wall of the unidirectional diaphragm is symmetrically provided with two arc-shaped guide pieces, the side edges of the top ends of the two arc-shaped guide pieces are provided with through holes, and the two arc-shaped guide pieces are slidably sleeved on the rod walls of the two guide sliding rods through the two through holes respectively.

Preferably, the middle part of the top end of the air guide hole groove is provided with an air guide groove, and the side edge of the bottom end of the air guide hole groove is fixedly connected with the top ends of the two guide sliding rods respectively.

The utility model discloses a technological effect and advantage:

the utility model discloses the problem of gas collection bag gas leakage has been solved in design that utilizes one-way valve member, its design is at the inside gas guide hole groove that passes through of direct straw, the structure of fixing support and one-way diaphragm combines, make it in the diaphragm entering bag that blows open through the gas guide hole groove to be gaseous, it is reverse, when bag interior gas receives external force impact to dash to the diaphragm, the gas guide hole groove blocks the diaphragm and moves outward, thereby prevent the inside gas of sack to reveal toward the outside, can ensure like this that the gas of collecting in the collecting bag can not leak, make the detection gas collect more, the inspection of being more convenient for.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a structural cross-sectional view of the pipette head of the present invention.

Fig. 3 is an enlarged schematic view of the structure at a in fig. 2 according to the present invention.

Fig. 4 is a schematic view of the structural connection between the fixing support and the one-way diaphragm of the present invention.

In the figure: 1. a pipette head; 101. an outer spiral layer; 102. a limiting lantern ring; 2. a connector; 3. an air guide hole groove; 301. a gas guide groove; 4. a fixed support; 401. air passing holes; 402. a guide slide bar; 5. a unidirectional membrane; 501. an arc-shaped guide vane.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a check valve straw as shown in figures 1-4, include:

a connector 2 is arranged at the bottom end of the pipette head 1;

the side of the bottom end of the pipette head 1 is fixedly connected with the side of the top end of the connector 2, the outer wall of the connector 2 is provided with threads, the connector 2 is used for being in sealing connection with a gas collection port of a collection bag, and the threads on the outer wall can enable the connection to be tighter when in heat sealing, so that tight sealing is ensured to be completed;

the outer wall at the middle part of the pipette head 1 is provided with two groups of outer screw layers 101, the outer wall sleeve at the bottom of the pipette head 1 is provided with a limiting lantern ring 102, the outer screw layer 101 on the outer wall of the pipette head 1 is used for sleeving a sealing cover in a threaded manner, the limiting lantern ring 102 limits the maximum depth of the whole pipette connected with the mouth of the collection bag, and the maximum connecting depth is up to the bottom end of the limiting lantern ring 102.

The one-way valve is arranged at the bottom of the inner wall of the straw head 1;

the one-way valve comprises an air guide hole groove 3, a fixed support 4 and a one-way diaphragm 5, the outer wall of the air guide hole groove 3 is fixedly connected with the inner wall of the bottom of the suction pipe head 1, and the one-way diaphragm 5 is arranged between the bottom end of the air guide hole groove 3 and the top end of the fixed support 4;

the inner chamber of pipette head 1 bottom sets up to the arc, and its top inner chamber diameter is greater than bottom inner chamber diameter, and fixing support 4's outer wall and the inner chamber wall fixed connection of pipette head 1 bottom, fixing support 4 are the round platform shape of middle evacuation, two direction slide bars 402 of avris fixedly connected with on fixing support 4 top, and gas passing hole 401 has been seted up at the middle part on fixing support 4 top.

Two arc-shaped guide pieces 501 are symmetrically arranged on the outer wall of the one-way membrane 5, penetrating holes are formed in the side edges of the top ends of the two arc-shaped guide pieces 501, the two arc-shaped guide pieces 501 are slidably sleeved on the rod walls of the two guide sliding rods 402 through the two penetrating holes respectively, the inner walls of the penetrating holes and the outer walls of the guide sliding rods 402 are smooth, so that sliding friction force of contact between the two guide sliding rods is reduced, and the arc-shaped guide pieces 501 can slide longitudinally more conveniently.

The middle of the top end of the air guide hole groove 3 is provided with an air guide groove 301, and the side edge of the bottom end of the air guide hole groove 3 is fixedly connected with the top ends of the two guide sliding rods 402 respectively.

The utility model discloses the theory of operation: referring to fig. 1-4, in use of the present straw,

firstly, the connector 2 is inserted at the large bag mouth of the gas collection bag, then heat sealing is carried out, so that the connector 2 is hermetically connected with the gas collection bag, during gas collection, gas is blown through the pipette head 1, and the gas enters the tube from the pipette head 1Lining (Chinese character of 'li')Then, the air flow passes through the air guide groove 301 of the air guide hole groove 3, the air flow blows downwards at the top end of the one-way membrane 5 along the air guide groove 301, the one-way membrane 5 is subjected to downward pressure from the air flow and conducts the pressure to the arc-shaped guide pieces 501 at two ends, under the guiding and limiting of the two arc-shaped guide pieces 501 and the two guide sliding rods 402, the one-way membrane 5 drives the two arc-shaped guide pieces 501 to synchronously slide downwards in numerical value and be attached to the top end of the fixed support 4, and at the moment, the air flow passes through the connector 2 downwards through the gap at the side of the air passing hole 401 and is collected in the air collecting bag.

When needs seal, if the gas collection bag pressurized, inside air current collects to connector 2 department this moment, the air current gushes connector 2 to fixing support 4's bottom, upwards surging, the air current can upwards push up one-way diaphragm 5 this moment, one-way diaphragm 5 atress upwards removes under the restriction direction of direction slide bar 402 and arc guide piece 501, the notch of 3 bottom air guide grooves 301 of top laminating air guide hole groove of up to one-way diaphragm 5, the shutoff to air guide grooves 301 is accomplished to one-way diaphragm 5 like this, the gas in the gas collection bag is revealed not to go out this moment.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. A one-way valve straw, comprising:

the pipette head comprises a pipette head (1), wherein the bottom end of the pipette head (1) is provided with a connector (2);

the one-way valve is arranged at the bottom of the inner wall of the straw head (1);

the novel straw suction pipe is characterized in that the one-way valve comprises an air guide hole groove (3), a fixed support (4) and a one-way membrane (5), the outer wall of the air guide hole groove (3) is fixedly connected with the inner wall of the bottom of the straw head (1), and the one-way membrane (5) is arranged between the bottom end of the air guide hole groove (3) and the top end of the fixed support (4).

2. The one-way valve straw as claimed in claim 1, wherein the side of the bottom end of the straw head (1) is fixedly connected with the side of the top end of the connector (2), and the outer wall of the connector (2) is threaded.

3. The one-way valve straw as claimed in claim 1, wherein the outer wall of the middle part of the straw head (1) is provided with two groups of outer screw layers (101), and the outer wall of the bottom of the straw head (1) is sleeved with a limit collar (102).

4. The one-way valve straw as claimed in claim 1, wherein the inner cavity at the bottom of the straw head (1) is arc-shaped, the outer wall of the fixing support (4) is fixedly connected with the inner cavity wall at the bottom of the straw head (1), the two guide sliding rods (402) are fixedly connected with the side of the top end of the fixing support (4), and the middle of the top end of the fixing support (4) is provided with the air passing hole (401).

5. The suction tube with the one-way valve according to claim 1, wherein the outer wall of the one-way diaphragm (5) is symmetrically provided with two arc-shaped guide pieces (501), the edge sides of the top ends of the two arc-shaped guide pieces (501) are both provided with through holes, and the two arc-shaped guide pieces (501) are respectively sleeved on the rod walls of the two guide sliding rods (402) in a sliding manner through the two through holes.

6. The one-way valve suction pipe as claimed in claim 1, wherein the middle of the top end of the air guide hole groove (3) is provided with an air guide groove (301), and the sides of the bottom end of the air guide hole groove (3) are respectively fixedly connected with the top ends of the two guide sliding rods (402).