CN202961514U

CN202961514U - Back-flow resistance valve in pipeline

Info

Publication number: CN202961514U
Application number: CN 201220692863
Authority: CN
Inventors: 于秀月; 刘传玲
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-12-15
Filing date: 2012-12-15
Publication date: 2013-06-05
Anticipated expiration: 2022-12-15

Abstract

The utility model discloses a back-flow resistance valve in a pipeline. The back-flow resistance valve in the pipeline comprises a pipe body and valves, wherein the valves are arranged in a pipe cavity. Two valves are designed in the pipe cavity, the width of the middle parts of the valves is greater than the radius of the pipe cavity, and is 1.5-2.5 times of the radius of the pipe cavity; the root parts of the valves are thicker than other parts, are arc-shaped and connected with the inner wall of the pipe cavity; free edges of the upper valve and the lower valve face towards the flow direction of the fluid; the valves are light films with elasticity and toughness; and the pipe body is transparent, and the two valves are provided with different colors. The back-flow resistance valve in the pipeline has the advantages that: 1, the two valves are simple and practical, satisfy biomechanics, and can be arranged at a plurality of positions in the same pipe body; 2, down-flow is not affected when the back-flow is prevented; 3, convection of liquid and gas in a drainage pipeline is prevented; and 4, the structure of the pipeline is not affected when the back-flow resistance valve is widely applied to any part of various pipe cavities and pipelines in medical science or non-medical life.

Description

Anti-return valve in pipeline

Technical field

This utility model relates to the technology of anti-return in a kind of pipeline, relates in particular to anti-return valve in the pipeline that uses in a kind of medical treatment.

Background technology

Opening and closing element is opened voluntarily or closes by media flow and strength, to prevent that valve that medium flows backwards is on check-valves, check-valves claims again check valve or non-return valve, check-valves belongs to the automatic valve class, be mainly used on the pipeline of medium one-way flow, only allow medium to flow to a direction, to try to avert accidents.Check-valves is divided by structure, can be divided into three kinds of lift check valve, swing check valve and butterfly swing check valves.Its shortcoming has: 1, structure is more complicated; 2, only be fit to rigid tubing, use extensive not; 3, need to overcome the gravity of anti-return lobe during following current; 4, affect pipeline thickness; 5, difficulty being installed can not arbitrarily place; 6, affecting the pipeline load-bearing can not place many places.It is a kind of cutaway view of check-valves as Fig. 1.It can guarantee that fluid flows to outlet 13 smoothly from entrance 11.Under the action of gravity of spool 12, it can prevent the adverse current of fluid.

Check-valves can be widely used in armarium, medical check valve material: medical PVC (polrvinyl chloride), stainless steel spring, silica gel sealing pad.Applicable: inflated type face shield, endotracheal tube, intubate and catheter etc. are supporting.The below is two application examples.

Example 1: a kind of backflow prevention thoracic drainage device, this utility model relates to a kind of medical apparatus and instruments, particularly a kind of backflow prevention thoracic drainage device.This backflow prevention thoracic drainage device comprises closed drainage bottle and drainage tube, it is characterized in that: described drainage tube and closed drainage bottle plug, and the closed drainage bottle upper end is provided with exhaustor, and drainage tube and exhaustor are provided with check valve.By on drainage tube and exhaustor, check valve being installed, can effectively stop gas or normal saline to blow back into the thoracic cavity.The beneficial effect of this utility model is: structure is simpler, and is safe and effective, and the patient need not to worry that drainage bottle is encountered and affects rest, has increased the safety of drain.

Example 2: a kind of back-flow prevention drainage bag, it comprises drainage bag, leakage fluid dram, hangs nose, drainage tube and interface.It is characterized in that: be provided with check valve in drainage tube.During use, interface is received on the interface of inlying catheter and got final product, because be provided with check valve in drainage tube, so no matter turn-over bed for patient is movable or when doing various inspections, the phenomenon of drainage-fluid refluence can not occur.The beneficial effect of this utility model is: structure is simpler, and is easy to operate, and the anti-backflow performance is good, reduced patient's misery and medical personnel's workload.

The shortcoming that described example has: 1, structure is still more complicated; To overcome the resistance of stainless steel spring when 2, the structure of medical check-valves makes liquid or gas following current, overslaugh pipeline unobstructed; 3, medical check-valves is a segment structure of pipeline, can not arbitrarily place; 4, the thickness that affects pipeline make liquid or the gas following current unobstructed not; 5, can not place many places; 6, can not prevent that gas or air-flow in pipeline from ging up.

Anti-counter-flow beverage straw: a kind of can be used in the people from container for drink when mouthful sucking liquid, can prevent that food in seam blows back into the device in container for drink.This device is comprised of two parts, namely is with one-way valve pipe and hollow pipe.At the pipeline of an end opening other end with the valve of inwardly opening with the one-way valve pipe.Hollow pipe is the common pipe of the equal opening in two ends, and its particularity is just can be enclosed within band one-way valve tube outside.Two pipelines are having an end socket of valve, thereby form a complete centre with the suction pipe of anti-backflow device.The mouth of pipe behaviour inhalation port of the direction that valve is opened, the other end insert in container for drink, and during people's sucking material, valve unlatching beverage can be drunk up, and when not inhaling, valve is closed, and beverage or food in mouthful can not flow back in container.Thereby the beverage that has prevented sucking-off flows backwards and enters in container for drink.As shown in Fig. 4～5, its valve is resilient semicircle and opens a cross recess in the centre.Shortcoming has: 1, structure is more complicated; 2, valve can not arbitrarily be placed; 3, the elasticity of valve own is depended in anti-backflow, makes the anti-backflow effect imprecise; If 4 liquid contain impurity, impurity can be sandwiched between valve, just without the anti-backflow effect.

Human vein lobe (as shown in Fig. 2 ~ 3): Whole Body blood capillary everywhere merges into vein, merges at last superior and inferior vena cave and Coronary vein and enters right atrium.Without vein valve, the vein of all the other each ones all has the valve that prevents blood back flow to whole body, is called venous valve except the vein of most of organs of internal organs, brain and incidence.Valve is two semilune thin slices, toward each other, root (protruding lateral margin) is connected with tunica intima of vein, its free edge (recessed edge) is towards blood flow direction, prevent the effect of backflow of blood, valve protrudes into the tube chamber inverted pleat by inner membrance and forms, and the center is the connective tissue that contains elastic fiber, and the surface is coated with endothelium.The valve of extremity vein is more, and especially lower limb are more flourishing, and its function is can prevent backflow of blood when the people is upright.Venous valve is two semilunes bag-shaped at intravenous, and is toward each other, outstanding and form in the tube chamber by inner membrance.Superficial vein is positioned at subcutaneous, sees because table is simple and easy, and be the position of intravenous injection or transfusion.Venous valve has the effect that prevents backflow of blood.

The utility model content

For being prevents liquid in pipeline or the backflow of gas simply and effectively, and do not affect following current, the technical solution adopted in the utility model is:

Anti-return valve in a kind of pipeline, it is characterized in that: comprise body and valve, valve is contained in tube chamber.

Be designed with two valves in tube chamber, width in the middle of valve is greater than the tube chamber radius, 1.5-2.5 times of place tube chamber radius, the root of valve is thicker than its other positions, and is curved and be connected with lumen wall, and the free edge of upper valve and lower valve is towards the direction of fluid flow, valve is lightweight, with flexible and thin film toughness, described body is transparent body, and two valves are with different colours.

Be designed with a valve in tube chamber, the Breadth Maximum of valve is greater than the diameter of place tube chamber, and valve is lightweight, and with flexible and thin film toughness, body is transparent body, and valve is with color.

The utility model has the advantages that:

1, be only two valves, simple and practical, meet biomechanics, but in same body, place many places;

2, anti-backflow and do not affect following current;

3, prevent the convection current between liquids and gases in drainage pipe;

4, be widely used in any position of various tube chambers and pipeline in the life of medical science and non-medical, do not affect the structure of place pipeline.

(1) with its advantage of check-valves comparison be: 1, described pipeline anti-return valve structure is more simple; 2, described pipeline anti-return valve can be applicable to various soft or hard pipelines, uses gravity more extensive 3, need overcome the metal lobe when check-valves liquid or gas following current, and described pipeline anti-return valve can be ignored.4, described pipeline anti-return valve can arbitrarily be placed on each position of tube chamber.5, described pipeline anti-return valve does not affect the thickness of place pipeline.6, but the anti-return effect is strengthened in described pipeline anti-return valve many places placement.

(2) with medical its advantage of check-valves comparison be: 1, described pipeline anti-return valve structure is more simple; 2, need overcome the resistance of stainless steel spring when check-valves liquid or gas following current, described pipeline anti-return valve can be ignored, meet biomechanics, more be fit to various drainage tubes, intubate, anesthesia respirator pipeline, various suction pipe and catheter etc. supporting; 3, described pipeline anti-return valve can arbitrarily be placed on each position of tube chamber; 4, do not affect the thickness of place pipeline; 5, but the anti-return effect is strengthened in described pipeline anti-return valve many places placement; 6, described pipeline anti-return valve can prevent the convection current between liquids and gases in drainage tube, prevents exactly gas or air-flow rise in tube chamber, better prevents from polluting.

(3) with its advantage of Anti-counter-flow beverage straw comparison be: 1, described pipeline anti-return valve structure is more simple; 2, described pipeline anti-return valve can arbitrarily be placed on each position of tube chamber; 3, anti-return is reliable for effect; 4, impure in liquid, impurity can not block between valve affects the anti-return effect.

Description of drawings

Fig. 1 is the cutaway view of check-valves.

Fig. 2 is that fluid is at the following current schematic diagram of venous valve.

Fig. 3 is that fluid is at the adverse current schematic diagram of venous valve.

Fig. 4 is the cutaway view of Anti-counter-flow beverage straw.

Fig. 5 is the top view of Anti-counter-flow beverage straw.

Fig. 6 is that the valve (valve coronalplane) of anti-return valve in pipeline launches positive view.

(valve sagittal plane) schematic diagram when Fig. 7 is the following current of fluid anti-return valve in pipeline.

(valve sagittal plane) schematic diagram when Fig. 8 is the adverse current of fluid anti-return valve in pipeline.

Fig. 9 is the schematic diagram of general drainage pipeline.

Figure 10 is the schematic diagram with the valve drainage pipe.

Figure 11 is the schematic diagram of the longer valve drainage pipe of band.

Figure 12 is the schematic diagram of single-lobe film drainage pipe liquid one-way flowing.

Figure 13 is that single-lobe film drainage pipe no liquid flows, and prevents the schematic diagram of the anti-stream of gas liquid.

In accompanying drawing: 11, entrance; 12, spool; 13, outlet; 61, valve; 62, body; 71, entrance; 72, lower valve; 73, outlet; 74, upper valve; 91, drainage tube lower end; 92, drainage tube upper end; 93, liquid edema caused by disorder of QI boundary line; 101, valve drainage tube lower end; 102, liquid edema caused by disorder of QI boundary line; 103, valve drainage tube upper end; 121, valve; 122, body.

The specific embodiment

As shown in Figure 6, this utility model arranges two semilune thin slice valves in tube chamber just as the human vein lobe, toward each other, width in the middle of valve is greater than the tube chamber radius, 1.5-2.5 times of place tube chamber radius, valve root section slightly thick (protruding lateral margin) curved or semicircle (Fig. 6) be connected with lumen wall form bag-shaped, both sides are connected with relative valve, its free edge (recessed edge) is towards flow direction, prevent liquid or gas backflow, valve weight does not extremely gently affect liquid or gas following current, and valve has certain elasticity and toughness.Tube chamber is transparent, two valves are put conspicuous color, be convenient to observe, can be applicable to each position of various soft or hard pipelines and pipeline, use in medical treatment and more have superiority, various drainage tubes, inflated type face shield, endotracheal tube, intubate, anesthesia respirator pipeline, various suction pipe and the catheter etc. that can be used on transfusion organ pipe, head chest abdominal part and extremity are supporting.This utility model can be applicable to caliduct, sewer pipe, straw, domestic water pipeline, some gas pipelines, water for industrial use pipeline etc. in life.

As shown in Figure 7, the direction shown in arrow is that the pipeline upper end is valve free edge (recessed edge) direction, and the opposite direction of arrow is for for lower end of duct is valve root (protruding lateral margin) direction, and the direction shown in arrow is liquid or gas flow direction.When gas or liquid flowed to outlet 73 from entrance 71, valve invested the pipeline inner face, and valve opens, and gas or liquid pass through smoothly.As shown in Figure 8, when gas or liquid from exporting 73 when flowing to entrance 71, valve close proximity in the middle of the tube chamber, closed gas or the liquid of stoping of valve passes through.

In common drainage pipe, as shown in Figure 9, left arrow is liquid flow direction, and right side arrow is gas flow direction, and dotted line is liquid edema caused by disorder of QI boundary line 93.Band valve drainage pipe as shown in figure 10, valve free edge (recessed edge) be valve drainage tube upper end 103 towards an end, the other end is that valve drainage tube lower end 101 is valve root (protruding lateral margin) direction.Phenomenon shown in Figure 9 phenomenon in drainage tube is very general, and the liquid that is in lower floor in drainage tube flows downward because of action of gravity, and the gas that is in the upper strata flows because of dirty the making progress of liquid, forms convection current between the liquid gas in drainage tube.Gas or bubble reflux and often cause drain position pollution.Shown in Figure 10, the strength that the valve on right side upwards flows because of gas is drawn close to the centre and is reached 102 (aneroid edema caused by disorder of QI boundary lines, valve top), liquid edema caused by disorder of QI boundary line, effectively prevents gas backstreaming, reduces the generation of polluting, the valve in left side is attached at tube wall, does not affect flowing of liquid.Described valve can arrange grows (as Figure 11), gas or bubble when more a side lobe film can prevent backflow.The Breadth Maximum of valve described herein is greater than the diameter of place tube chamber.Above-mentioned pipeline is as being transparent, and valve arranges different conspicuous color, is convenient to observe.Described valve also can arrange a side, and as Figure 12,13, the Breadth Maximum of valve 121 described herein is greater than the diameter of the tube chamber of place body 122.Figure 12 is the schematic diagram of liquid one-way flowing, and the left side arrow is the flow direction of liquid, and the right side is the direction of gas or bubble.When Figure 13 is the thing liquid flow, the schematic diagram that bubble or gas flow in the other direction.

Claims

1. anti-return valve in a pipeline, it is characterized in that: comprise body (62,122) and valve (61,121), valve is contained in tube chamber.

2. anti-return valve in pipeline according to claim 1, it is characterized in that: be designed with two valves in tube chamber, width in the middle of valve (61) is greater than the tube chamber radius, 1.5-2.5 times of place tube chamber radius, the root of valve (61) is thicker than its other positions, curved and be connected with lumen wall, the free edge of upper valve (74) and lower valve (72) is towards the direction of fluid flow, valve (61) is lightweight, with flexible and thin film toughness, described body (62) is transparent body, and two valves (61) are with different colours.

3. anti-return valve in pipeline according to claim 1, it is characterized in that: be designed with a valve in tube chamber, the Breadth Maximum of valve (121) is greater than the diameter of place tube chamber, valve (121) is lightweight, with flexible and thin film toughness, body (122) is transparent body, and valve (121) is with color.