CN202397935U - Medical pneumatic control valve - Google Patents
Medical pneumatic control valve Download PDFInfo
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- CN202397935U CN202397935U CN 201120568959 CN201120568959U CN202397935U CN 202397935 U CN202397935 U CN 202397935U CN 201120568959 CN201120568959 CN 201120568959 CN 201120568959 U CN201120568959 U CN 201120568959U CN 202397935 U CN202397935 U CN 202397935U
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Abstract
The utility model discloses a medical pneumatic control valve, which comprises a valve body and a safety valve component. The valve body is provided with a gas outlet and a gas inlet, and the safety valve component comprises a safety valve body and a safety valve spool. When the internal pressure of the valve body is higher than a set value, a gap can be formed between the safety valve body and the safety valve spool by the aid of gas pressure and is used for reducing the pressure. A one-way valve is arranged at the gas outlet and comprises a breather plate and a one-way valve body, the breather plate is provided with a breather hole, the one-way valve body is provided with a first gas channel for gas delivery, and when gas flows outwards from the gas outlet, the one-way valve is opened and the breather hole is communicated with the first gas channel. When the gas flows back, the one-way valve is closed, and the breather hole is disconnected from the first gas channel. The gas can flow in one direction by the aid of the one-way valve, the gas can be effectively exhausted to reduce the pressure by the aid of the safety valve when the internal pressure of the valve body is over-high, and the medical pneumatic control valve has the advantages of better structural manufacturability and sealing performance.
Description
Technical field
This utility model relates to medical instruments field, relates in particular to a kind of medical Pneumatic valve.
Background technology
Anesthetic machine is operating room safety, stability, the exigent equipment of ease for operation; It sends into anesthetics through mechanical circuit patient's alveolar; Form the anesthetics partial pressure, permeate into blood after, inhibitory action is directly taken place in the central nervous system; Thereby produce the effect of general anesthesia, anesthetic machine mainly comprises air supply system, volatilization jar, respirator and four parts of circuit system.
Anesthesia evaporator is the important composition parts on the anesthetic machine, and it provides stable, concentration to anaesthetize mist accurately through anesthetic machine to patient.It can effectively evaporate anesthetics; Can also control the output concentration of anesthesia steam accurately.
Anesthetic machine links to each other through medical Pneumatic valve with anesthesia evaporator.When the access failure anesthesia evaporator, anesthetic machine is carried gas through medical Pneumatic valve to patient end, and this moment, medical Pneumatic valve played the effect of the passage of carrying gas; So should guarantee gas does not outwards reveal; If air-tightness is good inadequately, just have portion gas and leak, cause the wasting of resources; The gas of medical Pneumatic valve of also should guaranteeing simultaneously to flow through does not have vapour lock or vapour lock is very little, so that unobstructed to patient end gas is provided; After connecting anesthesia evaporator, the gas delivery channels that medical Pneumatic valve self has is closed, all gas anesthesia evaporator of flowing through; Get into anesthetic machine through medical Pneumatic valve once more through vaporizer output, carry patient end, this moment, medical Pneumatic valve should guarantee that anesthetis do not reveal; If air-tightness is bad, cause anesthetis to reveal, be not only the wasting of resources; To a kind of anesthesia of doctor, the quality of operation and patient's safety have been influenced greatly especially.
Traditional medical Pneumatic valve all has air inlet and gas outlet, and during work, gas gets into vaporizer from air inlet through medical Pneumatic valve; Get into the anesthetic machine downstream once more through medical Pneumatic valve gas outlet by vaporizer output, and then be delivered to patient end, in the actual mechanical process; When gas outlet pressure has fluctuation; Will make the portion gas adverse current, the anesthesia gas concentration that causes exporting is accurate inadequately, makes troubles to use; When stopping state appears in the gas outlet, perhaps admission pressure is excessive, causes medical Pneumatic valve internal pressure excessive, and gas can not effectively be got rid of, and uses to have potential safety hazard; Also there is the processability of product structure defective in traditional medical Pneumatic valve simultaneously, and defective such as air-tightness is good inadequately.
The utility model content
The purpose of this utility model is to solve following problem: when 1) there is pressure oscillation conventional medical Pneumatic valve gas outlet, can cause portion gas adverse current phenomenon, further cause the anesthesia gas concentration inaccuracy of exporting; 2) the conventional medical Pneumatic valve stopping state occurs when the gas outlet, and perhaps admission pressure is excessive, causes medical Pneumatic valve internal pressure excessive; Gas can not effectively be got rid of; There is potential safety hazard in use, 3) there is the processability of product structure defective in traditional medical Pneumatic valve, and defective such as air-tightness is good inadequately.
This utility model provides a kind of medical Pneumatic valve, and it can make gas flow unique through in the gas outlet check valve being set; And relief valve is installed, when portion's pressure is excessive within it, gas is effectively got rid of; Realize the reduction of pressure, and have the advantage of processability of product structure, better tightness.
The purpose of this utility model is to realize through following technical scheme:
A kind of medical Pneumatic valve; Comprise valve body, said valve body sets out QI KOU and air inlet, also comprises relief valve assembly; Said relief valve assembly comprises relief valve valve body and relief valve spool; When valve inner pressure was higher than setting value, gas pressure can make between relief valve valve body and the relief valve spool and form the slit, and carries out blood pressure lowering through said slit; The place is provided with check valve in said gas outlet, and said check valve comprises air permeable plate and check valve valve body, and said air permeable plate has air-vent; And the gas outlet is connected with air-vent, and said check valve valve body has gas transmission and uses first gas passage, when gas outwards flows out from the gas outlet; Said check valve is opened, and said air-vent is communicated with first gas passage, when back flow of gas; Said closed check valve, said air-vent and the blocking-up of first gas passage.
Further; Said valve body is provided with valve gap; Has second gas passage in the said valve gap; Have the 3rd gas passage, first cavity that communicates with air inlet, second cavity that communicates with said first cavity in the said valve body, said second cavity, the 3rd gas passage are used for said medical Pneumatic valve and when the access failure vaporizer, carry gas.
Preferably; The said valve body in corresponding said gas outlet is provided with the step cannelure; Be respectively first cannelure and second cannelure; Said air permeable plate is installed in said first cannelure, be close to said air permeable plate the outer face, through screw said check valve valve body is fastened on the said valve body, be provided with sealing ring at the joint of the joint of said air permeable plate and said valve body, said check valve valve body and said valve body.
Preferably; Said relief valve assembly is arranged on said check valve valve body top; Said relief valve assembly comprises relief valve valve body and relief valve spool, and said relief valve valve inner has the 4th gas passage, and said the 4th gas passage communicates with said first gas passage.
Further; The said first cavity top has female thread; Said valve gap coupling female thread is provided with external screw thread, so that said valve gap is threaded on the said valve body ring cutting two grooves on said valve gap; And lay respectively at said externally threaded upper and lower both sides; And sealing ring all is set in two grooves, and be used to strengthen the air-tightness between said valve gap and the vaporizer at the sealing ring of said external screw thread upside, be used to strengthen the air-tightness between said valve gap and the valve body at the sealing ring of said external screw thread downside;
Said the 3rd gas passage is arranged on the below of said first cavity; And communicate with the bottom of first cavity; So that being, said second gas passage and the 3rd gas passage be oppositely arranged; The outlet of corresponding said second gas passage is provided with first boss in said valve gap bottom, and the import of corresponding said the 3rd gas passage is provided with second boss in the bottom of said first cavity;
In the installing space of forming by said second gas passage, first cavity, the 3rd gas passage, be provided with spool; Said spool is provided with first sealing gasket; Said first sealing gasket is between first boss and second boss; Through moving up and down of said first sealing gasket, realize that first cavity is communicated with second gas passage, the 3rd gas passage selectivity.
Preferably, be provided with the 3rd cannelure at the place, end that said check valve valve body and air permeable plate join, said the 3rd cannelure communicates with said first gas passage;
Said air permeable plate integral body is rounded, and at its outer rim ring cutting the first step face is arranged, and is used to install sealing ring, has centre bore on the said air permeable plate, also has some air-vents;
Be provided with second sealing gasket between said air permeable plate and the check valve valve body,, realize that said gas outlet is communicated with the said first gas passage selectivity through the motion of said second sealing gasket.
Preferably, said relief valve valve body one end is provided with external screw thread, and said check valve valve body coupling external screw thread is provided with female thread so that between said relief valve valve body and the said check valve valve body through being threaded;
Be provided with groove at said externally threaded root, in the said groove sealing ring be installed, to strengthen the air-tightness between said relief valve valve body and the said check valve valve body;
The other end set inside of said relief valve valve body has the second step face, and said second step face top has the conical surface;
Said relief valve spool comprises relief valve valve rod, spring, block and adjusting nut, and said relief valve valve rod comprises round bar part and head portion, and said round bar part one end has external screw thread, and the other end links to each other with head portion;
Said spring, block are enclosed within the periphery of said round bar part successively, and spacing through the adjusting nut that is spun on the said round bar part, and said adjusting nut also is used to regulate the decrement of said spring;
Said relief valve spool is installed in the said relief valve valve body; So that the said second step face of spring top clamping, said head portion contacts the said conical surface, has groove on the said head portion; And sealing ring is set in groove, to strengthen the air-tightness between said relief valve spool and the relief valve valve body.
Further, said spool comprises gland, upper spring, valve rod, the lower spring that links to each other successively from top to bottom;
Said gland upper end has first convexity; Corresponding said first convexity inwardly is provided with second convexity in the upper end of said valve gap, and said second convexity is positioned at the import department of said second gas passage, through said first convexity and second protruding the cooperating; Said gland is limited in said second gas passage; Said gland integral body is cylindrical, at its peripheral evenly rip cutting four straight flanges, and leaves the circular arc guide part in the center of straight flange;
Said gland bottom centre extends upward and has mounting groove, and the said mounting groove oral area of going up falls filleted corner, and said valve rod top center has down mounting groove to extending below, and said upper spring one end is installed in the mounting groove, and the other end is installed in down in the mounting groove;
Said valve rod middle part is provided with annular solid; Said annular solid top has the conical surface; The lower surface of being close to said annular solid has the first sealing gasket mounting groove on said valve rod, said first sealing gasket is installed on the said valve rod through the first sealing gasket mounting groove, and it is peripheral that said lower spring is enclosed within said stem lower portion; One end places in said the 3rd gas passage, and the other end contacts the lower surface of said first sealing gasket.
Further, said second sealing gasket comprises integrated disc portions and rod member part, and said rod member partly is arranged on the center of said integrated disc portions; Said second sealing gasket is installed between said air permeable plate and the check valve valve body; So that said rod member partly passes said centre bore, and the length of said rod member part is greater than the thickness of said air permeable plate, and said rod member part outer end is provided with limited cap; So that said second sealing gasket does not fall off in said air permeable plate; When said integrated disc portions is adjacent to said air permeable plate, be blocked said gas outlet and the blocking-up of said first gas passage between said air-vent and said the 3rd cannelure.
Further; The external diameter of said integrated disc portions is less than the internal diameter of said the 3rd cannelure; Be provided with the spacing preiection of some said integrated disc portions in said the 3rd cannelure; Said the 3rd cannelure is communicated with said first gas passage, and gives vent to anger through being threaded in the outer end of said first gas passage and to use pipe joint.
The beneficial effect of this utility model is: 1, through the place, gas outlet at valve body check valve is set, when gas flow was normal flow direction, check valve was opened, and gas flows out smoothly; When pressure oscillation appears in the gas outlet, cause the gas reverse counterflow, this moment, closed check valve stoped the adverse current of gas so that the anesthesia gas concentration of output the same with setting value accurate reliably;
Specifically, check valve comprises check valve valve body, air permeable plate, both through with the cooperating the unlatching that realizes check valve or close of second sealing gasket; When gas flow is normal flow direction, promptly outwards flow out, under the effect of gas pressure from the gas outlet; Promote second sealing gasket to the first gas passage side shifting; Make the slit to occur between second sealing gasket and the air permeable plate, gas flows to first gas passage from air-vent, realizes the output of gas; When the gas reverse counterflow; Promptly inwardly flow to, under the effect of gas pressure, make second sealing gasket be adjacent to air permeable plate from first gas passage; Further make win gas passage and gas outlet blocking-up, gas can not flow in the medical Pneumatic valve from first gas passage;
2, through relief valve assembly is set; Relief valve assembly comprises relief valve valve body and relief valve spool; When blocked or admission pressure is excessive in medical Pneumatic valve gas outlet; When causing the valve inner hypertonia, carry out blood pressure lowering, so that the use of medical Pneumatic valve is safer through the slit between relief valve valve body and the relief valve spool;
Specifically; When the valve inner gas pressure is too high, can make the 4th gas passage internal pressure too high, under the ordering about of gas pressure; Promoting the relief valve spool moves upward; So that the slit occurs between relief valve spool and the relief valve valve body, through this slit gas is effectively discharged, realize the decline of pressure;
3, be provided with the dual-seal circle through joint, strengthened the air-tightness between valve gap and valve body, the vaporizer at valve gap and valve body; Junction through at joint, air permeable plate and the valve body of check valve valve body and valve body all is provided with sealing ring, has strengthened the air-tightness between check valve and the valve body; Through sealing ring being set at relief valve valve body and check valve valve body joint, through sealing ring being set at relief valve valve body and relief valve spool joint, strengthened relief valve self with and and check valve between air-tightness.Contrast prior art, the described medical Pneumatic valve of this utility model have can guarantee that gas flow is unique, use safer, simple in structure, the better advantage of air-tightness.
Description of drawings
According to accompanying drawing and embodiment this utility model is done further explain below.
Fig. 1 is the partial schematic sectional view of the described medical Pneumatic valve of this utility model;
Fig. 2 is the cross-sectional schematic of the valve body shown in Fig. 1;
Fig. 3 is the cross-sectional schematic of the valve gap shown in Fig. 1;
Fig. 4 is the schematic perspective view of the gland shown in Fig. 1;
Fig. 5 is the cross-sectional schematic of the gland shown in Fig. 1;
Fig. 6 is the schematic perspective view of the valve rod shown in Fig. 1;
Fig. 7 is the cross-sectional schematic of the valve rod shown in Fig. 1;
Fig. 8 is the schematic perspective view of the check valve valve body shown in Fig. 1;
Fig. 9 is the cross-sectional schematic of the check valve valve body shown in Fig. 1;
Figure 10 is the schematic perspective view of the air permeable plate shown in Fig. 1;
Figure 11 is the cross-sectional schematic of the air permeable plate shown in Fig. 1;
Figure 12 is the schematic perspective view of second sealing gasket shown in Fig. 1;
Figure 13 is the cross-sectional schematic of the relief valve valve body shown in Fig. 1;
Figure 14 is the cross-sectional schematic of the relief valve valve rod shown in Fig. 1.
Among the figure:
1, valve body; 11, first cavity; 12, second cavity; 13, the 3rd gas passage; 14, first cannelure; 15, second cannelure; 16, first groove; 17, second boss;
2, valve gap; 21, second gas passage; 22, second convexity; 23, first boss; 24, second groove; 25, the 3rd groove;
3, spool; 31, gland; 311, first convexity; 312, guide part; 313, go up mounting groove; 32, upper spring; 33, valve rod; 331, following mounting groove; 332, annular solid; 333, the first sealing gasket mounting groove; 34, lower spring;
4, check valve; 41, check valve valve body; 411, first gas passage; 412, the 3rd cannelure; 413, spacing preiection; 42, air permeable plate; 421, air-vent; 422, first step face;
5, relief valve assembly; 51, relief valve valve body; 511, second step face; 512, the 4th groove; 513, the 4th gas passage; 52, relief valve spool; 521, relief valve valve rod; 522, spring; 523, block; 524, adjusting nut;
6, first sealing gasket; 7, second sealing gasket; 71, integrated disc portions; 72, rod member part; 73, limited cap; 8, sealing ring; 9, pipe joint.
The specific embodiment
As shown in Figure 1, in present embodiment, the described medical Pneumatic valve of this utility model; Comprise valve body 1, valve body 1 sets out QI KOU and air inlet, also comprises relief valve assembly 5; Relief valve assembly 5 comprises relief valve valve body 51 and relief valve spool 52; When valve inner pressure was higher than setting value, gas pressure can make between relief valve valve body 51 and the relief valve spool 52 and form the slit, and carries out blood pressure lowering through said slit; The place is provided with check valve 4 in said gas outlet, and check valve 4 comprises air permeable plate 42 and check valve valve body 41, and air permeable plate 42 has air-vent 421; Check valve valve body 41 has gas transmission with first gas passage 411, and when gas outwards flowed out from the gas outlet, check valve 4 was opened; Air-vent 421 is communicated with first gas passage 411; When back flow of gas, check valve 4 is closed, the logical 411 roads blocking-up of the air-vent 421 and first gas.
As shown in Figure 2, provided a specific embodiment of valve body, have first cavity 11 that communicates with the air inlet (not shown) on the valve body 1; Second cavity 12, the 3rd gas passage 13, the first cavitys 11 tops that communicate with first cavity 11 have female thread, and valve gap 2 is used to be threaded; Second cavity 12, the 3rd gas passage 13 are used for when this medical Pneumatic valve access failure vaporizer, carrying gas, and the 3rd gas passage 13 is positioned at the below of first cavity 11, and communicates with the bottom of first cavity 11; The import of corresponding the 3rd gas passage 13 is provided with second boss 17 in the bottom of first cavity 11; Concentric two cannelures that have at the place, gas outlet are respectively first cannelure 14 and second cannelure 15, also are provided with first groove 16; First cannelure 14 is used to install the air permeable plate 42 of check valve; First groove, 16 set inside sealing rings 8 because it is positioned at the joint of check valve and medical Pneumatic valve, can play the bubble-tight effect of strengthening between check valve and the medical Pneumatic valve.
As shown in Figure 3, provided a specific embodiment of valve gap, valve gap 2 adopts hollow structures; Make its inside have second gas passage 21, its bottom is the outlet of second gas passage 21, and the top is the import of second gas passage 21; Anesthetic gases gets into from import; Discharge from outlet, the outlet of corresponding second gas passage 21 is provided with first boss 23 in valve gap 2 bottoms, and valve gap 2 tops inwardly have second protruding 22; The middle part is provided with external screw thread; Be positioned at said externally threaded up and down both sides and be provided with sealing ring 8 being provided with respectively on the valve gap 2 in second groove 24 and the 3rd groove 25, the second grooves 24 and the 3rd groove 25, when valve gap 2 is installed in 1 last time of valve body; Sealing ring 8 at the threaded connection place upside has guaranteed the air-tightness between valve gap 2 and the vaporizer, has guaranteed the air-tightness between valve gap 2 and the valve body 1 at the sealing ring 8 of threaded connection place downside.
Like Fig. 1, shown in 4～7, provided a specific embodiment of spool, spool 3 comprises gland 31, upper spring 32, valve rod 33, lower spring 34; Gland 31 is whole cylindrical, and the even rip cutting of its periphery has four straight flanges, and said straight flange can make between valve gap 2 and the gland 31 and form gas passage; And leave circular arc guide part 312 in the center of straight flange; Guide part 312 can make gland 31 enough steadily reliable at valve gap 2 internal motions, and gland 31 tops are provided with first convexity 311, and bottom centre extends upward and has mounting groove 313; Last mounting groove 313 oral areas fall filleted corner; Be convenient to the assembling with upper spring, the top center of valve rod 33 has down mounting groove 331 to extending below, and the middle part of valve rod 33 is provided with annular solid 332; The top of annular solid 332 has the conical surface, and the lower surface of being close to annular solid 332 has the first sealing gasket mounting groove 333 on valve rod 33.
During installation, upper spring 32 1 ends are installed in the mounting groove 313, the other end is installed in down in the mounting groove 331; First sealing gasket 6 is installed on the valve rod 33 through the first sealing gasket mounting groove 333, and lower spring 34 is enclosed within the periphery, bottom of valve rod 33, and an end places in the 3rd gas passage 13; The other end contacts the lower surface of first sealing gasket 6, with spool 3 alignment valve gaps 2 inside, through compressing upper and lower spring 32,34 valve gap 2 is tightened on the valve body 1 then; Hold out against each other through first protruding 311 and second protruding 22; Gland 31 is limited in second gas passage 21, because second gas passage 21 and the 3rd gas passage 13 are oppositely arranged, first sealing gasket 6 is between first boss 23 and second boss 17; When first sealing gasket 6 moves upward; And when holding out against with first boss 23, second gas passage 21 is by shutoff, and first cavity 11 is connected with the 3rd gas passage 13; When first sealing gasket 6 moves downward, and when holding out against with second boss 17, the 3rd gas passage 13 is by shutoff, and first cavity 11 is connected with second gas passage 21.
Like Fig. 1, shown in 8～12; Provided a specific embodiment of check valve, check valve 4 is installed in the place, gas outlet, and it comprises check valve valve body 41 and air permeable plate 42; Has first gas passage 411 in the check valve valve body 41; Having the exit that has some spacing preiection 413, the first gas passages 411 in the 3rd cannelure 412, the three cannelures in the import department that is positioned at first gas passage 411 gives vent to anger through being threaded with pipe joint 9; Also have screwed hole on the check valve valve body 41, it can be connected on the valve body 1 through screw;
Air permeable plate 42 is whole rounded, has centre bore on it, also has four air-vents 421, and air permeable plate 42 outer rim ring cuttings have first step face 422, and first step face 422 is provided with sealing ring 8;
Between air permeable plate 42 and check valve valve body 41, be provided with second sealing gasket 7; Second sealing gasket 7 comprises integrated disc portions 71 and rod member part 72, and rod member part 72 is arranged on the center of integrated disc portions 71, and the length of rod member part 72 is greater than the thickness of air permeable plate 42; Rod member part 72 is moved back and forth in the centre bore of air permeable plate 42; In order to make second sealing gasket 7 air permeable plate 42 that do not come off, be provided with limited cap 73 in the end of rod member part 72, the overall dimensions of limited cap 73 is greater than the centre bore aperture; And some spacing preiections 413 are set in the 3rd cannelure 412, with the position of limit disk part 71.
During installation, at first rod member part 72 and limited cap 73 are penetrated in the lump the centre bore of air permeable plate 42, then air permeable plate 42 and sealing ring 8 are installed in first cannelure 14 in the lump; So that limited cap 73 is positioned at second cannelure 15; Again that integrated disc portions 71 is mutually bonding with rod member part 72, the sealing ring 8 of in first groove 16, packing into, and make integrated disc portions 71 corresponding with the 3rd cannelure 412; Check valve valve body 41 is fastened on the valve body 1 through screw; Because the external diameter of integrated disc portions 71 is less than the 3rd cannelure 412 internal diameters, integrated disc portions 71 places in the 3rd cannelure 412, when integrated disc portions 71 is adjacent to air permeable plate 42; But its shutoff air-vent 421, so that gas outlet and 411 blocking-up of first gas passage.
Like Fig. 1, shown in 13～14, provided a specific embodiment of relief valve assembly, relief valve assembly 5 is installed in the top of check valve valve body 41; Comprise relief valve valve body 51 and relief valve spool 52; And relief valve spool 52 is installed in relief valve valve body 51 inside, and relief valve valve body 51 inside have the 4th gas passage 513, the four gas passages 513 and communicate with first gas passage 411; Relief valve valve body 51 1 ends are provided with external screw thread; The check valve valve body 41 that is used to be threaded is provided with the 4th groove 512 at externally threaded root, and sealing ring 8 is installed in the 4th groove 512; The other end set inside of relief valve valve body 51 has second step face 511, and the top of second step face 511 also has the conical surface;
Relief valve spool 52 comprises relief valve valve rod 521, spring 522, block 523, adjusting nut 524; Relief valve valve rod 521 comprises round bar part and head portion, and round bar part one end has external screw thread, and the other end links to each other with head portion; Head portion has groove; Spring 522, block 523 are enclosed within the periphery of round bar part successively, and spacing through the adjusting nut 524 that is spun on the round bar part, and adjusting nut 524 also is used for the decrement of regulating spring;
During installation; The sealing ring 8 of in the 4th groove 512 of relief valve valve body 51, in the groove of head portion, all packing into inwardly inserts relief valve valve rod 521 from relief valve valve body 51 tops, so that head portion contacts with the conical surface; Be inserted in spring 522, block 523 successively in the round bar part; And screw in adjusting nut 524, and make spring 522 hold out against second step face 511, then relief valve valve body 51 is tightened on the top of check valve valve body 41.
The operation principle of the described medical Pneumatic valve of this utility model: as shown in Figure 1, only show the partial structurtes of the described medical Pneumatic valve of this utility model among the figure, medical Pneumatic valve is actual to have two identical valve gaps; Be installed on the valve body; Have two separate gas circuits in the valve body, when the access failure vaporizer, the actual effect of playing a gas passage of medical Pneumatic valve of this moment; Gas gets into valve body from the air inlet pipe joint, finally from 12 outputs of second cavity; When medical Pneumatic valve is connected vaporizer; Two valve gaps all articulate vaporizer, (promptly vaporizer needs cooperate with two valve gaps simultaneously, could realize and being connected of medical Pneumatic valve); Gas gets into valve inner from the air inlet pipe joint; Get into vaporizer from first valve gap again, get into valve body from vaporizer once more through second valve gap then, export from the pipe joint of gas outlet at last.Wherein valve gap top periphery design becomes hexagonal structure, and it mainly acts on is the assembling that makes things convenient between itself and the valve body, and (be valve gap peripheral structure be mainly used in match) with assembly tool, each medical Pneumatic valve can articulate one or more vaporizers simultaneously.
When the access failure vaporizer, the actual effect of playing a gas passage of medical Pneumatic valve of this moment, second cavity 12 is the outlet side part of this gas passage; When gland 31 was not depressed, under the elastic force effect of lower spring 34, first sealing gasket 6 held out against first boss 23; Second gas passage 21 is by shutoff, and gas enters in first cavity 11 from air inlet, gets into second cavity 12 and the 3rd gas passage 13 then; Enter into the portion gas of the 3rd gas passage 13; Can flow into once more in second cavity 12, get into the anesthetic machine downstream through medical Pneumatic valve pipeline and joint (not shown) again, realize the output of gas.
When connecting vaporizer, gland 31 is depressed, and moves downward so that first sealing gasket 6 overcomes lower spring 34 elastic force; And hold out against with second boss 17, the 3rd gas passage 13 is by shutoff, and anesthetic gases gets into first cavity 11 from second gas passage 21; Because 12 outlets of second cavity are provided with plug, the gas passage that medical Pneumatic valve self has is closed, and makes gas can only flow to the gas outlet; When entering into second cannelure, 15 inside, gas pressure promotes second sealing gasket 7 and moves right, so that the slit occurs between second sealing gasket 7 and the air permeable plate 42; Gas, and then flows in first gas passage 411 in this slit flows into the 3rd cannelure 412 from air-vent 421, and from pipe joint 9 outputs; When too high or pipe joint 9 exits were stopped up when admission pressure, when causing that gas pressures are too high in first gas passage 411, gas flowed in the 4th gas passage 513 through first gas passage 411; Under the effect of gas pressure, upwards promote relief valve valve rod 521, so that the slit occurs between the conical surface of its head portion and relief valve valve body; Gas discharges thus, realizes that the pressure of valve inner reduces.
When gas gets into first gas passage 411 from pipe joint 9; When the adverse current phenomenon occurring; Gas pressure promotes second sealing gasket 7 to left movement, and makes integrated disc portions 71 be adjacent to air permeable plate 42, shutoff air-vent 421; So that block between first gas passage 411 and the gas outlet, gas can not flow in the valve body 1.
Claims (10)
1. medical Pneumatic valve; Comprise valve body (1), said valve body (1) sets out QI KOU and air inlet, it is characterized in that: also comprise relief valve assembly (5); Said relief valve assembly (5) comprises relief valve valve body (51) and relief valve spool (52); When valve body (1) when internal pressure is higher than setting value, gas pressure can make between relief valve valve body (51) and the relief valve spool (52) and form the slit, and carries out blood pressure lowering through said slit; The place is provided with check valve (4) in said gas outlet, and said check valve (4) comprises air permeable plate (42) and check valve valve body (41), and said air permeable plate (42) has air-vent (421); And the gas outlet is connected with air-vent (421); Said check valve valve body (41) has gas transmission with first gas passage (411), and when gas outwards flowed out from the gas outlet, said check valve (4) was opened; Said air-vent (421) is communicated with first gas passage (411); When back flow of gas, said check valve (4) is closed, said air-vent (421) and first gas passage (411) blocking-up.
2. medical Pneumatic valve according to claim 1; It is characterized in that: said valve body (1) is provided with valve gap (2); Has second gas passage (21) in the said valve gap (2); Have the 3rd gas passage (13), first cavity (11) that communicates with air inlet, second cavity (12) that communicates with first cavity (11) in the said valve body (1), said second cavity (12), the 3rd gas passage (13) are used for said medical Pneumatic valve and when the access failure vaporizer, carry gas.
3. medical Pneumatic valve according to claim 1; It is characterized in that: the said valve body in corresponding said gas outlet (1) is provided with the step cannelure; Be respectively first cannelure (14) and second cannelure (15); Said air permeable plate (42) is installed in said first cannelure (14); Be close to said air permeable plate (42) the outer face, through screw said check valve valve body (41) is fastened on the said valve body (1), be provided with sealing ring (8) at joint, the said check valve valve body (41) of said air permeable plate (42) and said valve body (1) with the joint of said valve body (1).
4. medical Pneumatic valve according to claim 1; It is characterized in that: said relief valve assembly (5) is arranged on said check valve valve body (41) top; Said relief valve assembly (5) comprises relief valve valve body (51) and relief valve spool (52); Said relief valve valve body (51) inside has the 4th gas passage (513), and said the 4th gas passage (513) communicates with said first gas passage (411).
5. medical Pneumatic valve according to claim 2; It is characterized in that: said first cavity (11) top has female thread; Said valve gap (2) coupling female thread is provided with external screw thread, so that said valve gap (2) is threaded on the said valve body (1), goes up ring cutting two grooves at said valve gap (2); And lay respectively at said externally threaded upper and lower both sides; And sealing ring (8) all is set in two grooves, and the sealing ring (8) that is positioned at said external screw thread upside is used to strengthen the air-tightness between said valve gap (2) and the vaporizer, and the sealing ring (8) that is positioned at said external screw thread downside is used to strengthen the air-tightness between said valve gap (2) and the valve body (1);
Said the 3rd gas passage (13) is arranged on the below of said first cavity (11); And communicate with the bottom of first cavity (11); So that being with the 3rd gas passage (13), said second gas passage (21) is oppositely arranged; The outlet of corresponding said second gas passage (21) is provided with first boss (23) in said valve gap (2) bottom, and the import of corresponding said the 3rd gas passage (13) is provided with second boss (17) in the bottom of said first cavity (11);
In the installing space of forming by said second gas passage (21), first cavity (11), the 3rd gas passage (13), be provided with spool (3); Said spool (3) is provided with first sealing gasket (6); Said first sealing gasket (6) is positioned between first boss (23) and second boss (17); Through moving up and down of said first sealing gasket (6), realize that first cavity (11) is communicated with second gas passage (21), the 3rd gas passage (13) selectivity.
6. medical Pneumatic valve according to claim 3 is characterized in that: the place, end in that said check valve valve body (41) and air permeable plate (42) join is provided with the 3rd cannelure (412), and said the 3rd cannelure (412) communicates with said first gas passage (411);
Said air permeable plate (42) is whole rounded, and at its outer rim ring cutting first step face (422) is arranged, and is used to install sealing ring, and said air permeable plate has centre bore on (42), also has some air-vents (421);
Be provided with second sealing gasket (7) between said air permeable plate (42) and the check valve valve body (41),, realize that said gas outlet is communicated with said first gas passage (411) selectivity through the motion of said second sealing gasket (7).
7. medical Pneumatic valve according to claim 4; It is characterized in that: said relief valve valve body (51) one ends are provided with external screw thread; Said check valve valve body (41) coupling external screw thread is provided with female thread so that between said relief valve valve body (51) and the said check valve valve body (41) through being threaded;
Be provided with groove at said externally threaded root, sealing ring (8) is installed in the said groove, to strengthen the air-tightness between said relief valve valve body (51) and the said check valve valve body (41);
The other end set inside of said relief valve valve body (51) has second step face (511), and said second step face (511) top has the conical surface;
Said relief valve spool (52) comprises relief valve valve rod (521), spring (522), block (523) and adjusting nut (524); Said relief valve valve rod (521) comprises round bar part and head portion; Said round bar part one end has external screw thread, and the other end links to each other with head portion;
Said spring (522), block (523) are enclosed within the periphery of said round bar part successively, and spacing through the adjusting nut (524) that is spun on the said round bar part, the decrement that said adjusting nut (524) also is used to regulate said spring (522);
Said relief valve spool (52) is installed in the said relief valve valve body (51); So that spring (522) holds out against said second step face (511); Said head portion contacts the said conical surface; Have groove on the said head portion, and in groove, sealing ring is set, to strengthen the air-tightness between said relief valve spool (52) and the relief valve valve body (51).
8. medical Pneumatic valve according to claim 5 is characterized in that: said spool (3) comprises gland (31), upper spring (32), valve rod (33), the lower spring (34) that links to each other successively from top to bottom;
Said gland (31) upper end has first convexity (311); Corresponding said first convexity (311) inwardly is provided with second convexity (22) in the upper end of said valve gap (2); Said second convexity (22) is positioned at the import department of said second gas passage (21); Through cooperating of said first convexity (311) and second convexity (22), said gland (31) is limited in said second gas passage (21), said gland (31) is whole cylindrical; At its peripheral evenly rip cutting four straight flanges, and leave circular arc guide part (312) in the center of straight flange;
Said gland (31) bottom centre extends upward and has mounting groove (313); And said mounting groove (313) oral area of going up falls filleted corner; Said valve rod (33) top center has down mounting groove (331) to extending below; Said upper spring (32) one ends are installed in the mounting groove (313), and the other end is installed in down in the mounting groove (331);
Said valve rod (33) middle part is provided with annular solid (332); Said annular solid (332) top has the conical surface; The lower surface of being close to said annular solid (332) has the first sealing gasket mounting groove (333) on said valve rod (33); Said first sealing gasket (6) is installed on the said valve rod (33) through the first sealing gasket mounting groove (333); Said lower spring (34) is enclosed within periphery, said valve rod (33) bottom, and an end places in said the 3rd gas passage (13), and the other end contacts the lower surface of said first sealing gasket (6).
9. medical Pneumatic valve according to claim 6; It is characterized in that: said second sealing gasket (7) comprises integrated disc portions (71) and rod member part (72); Said rod member part (72) is arranged on the center of said integrated disc portions (71), and said second sealing gasket (7) is installed between said air permeable plate (42) and the check valve valve body (41), so that said rod member part (72) is passed said centre bore; And the length of said rod member part (72) is greater than the thickness of said air permeable plate (42); Said rod member part (72) outer end is provided with limited cap (73), so that said second sealing gasket (7) does not fall off in said air permeable plate (42), when said integrated disc portions (71) is adjacent to said air permeable plate (42); Be blocked said gas outlet and said first gas passage (411) blocking-up between said air-vent (421) and said the 3rd cannelure (412).
10. medical Pneumatic valve according to claim 9; It is characterized in that: the external diameter of said integrated disc portions (71) is less than the internal diameter of said the 3rd cannelure (412); Be provided with the spacing preiection (413) of some said integrated disc portions in said the 3rd cannelure (412); Said the 3rd cannelure (412) is communicated with said first gas passage (411), and gives vent to anger through being threaded with pipe joint (9) in the outer end of said first gas passage (411).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120568959 CN202397935U (en) | 2011-12-30 | 2011-12-30 | Medical pneumatic control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120568959 CN202397935U (en) | 2011-12-30 | 2011-12-30 | Medical pneumatic control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202397935U true CN202397935U (en) | 2012-08-29 |
Family
ID=46695616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120568959 Withdrawn - After Issue CN202397935U (en) | 2011-12-30 | 2011-12-30 | Medical pneumatic control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202397935U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103182136A (en) * | 2011-12-30 | 2013-07-03 | 北京谊安医疗系统股份有限公司 | Medical pneumatic control valve |
| WO2013097688A1 (en) * | 2011-12-30 | 2013-07-04 | 北京谊安医疗系统股份有限公司 | Transfer valve |
| CN103893894A (en) * | 2012-12-27 | 2014-07-02 | 北京谊安医疗系统股份有限公司 | Pneumatic control valve for anesthetic evaporator and anesthetic evaporator control method implemented by pneumatic control valve |
| CN111904864A (en) * | 2020-09-03 | 2020-11-10 | 温州医科大学附属第一医院 | Traditional Chinese medicine decocting device |
-
2011
- 2011-12-30 CN CN 201120568959 patent/CN202397935U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103182136A (en) * | 2011-12-30 | 2013-07-03 | 北京谊安医疗系统股份有限公司 | Medical pneumatic control valve |
| WO2013097688A1 (en) * | 2011-12-30 | 2013-07-04 | 北京谊安医疗系统股份有限公司 | Transfer valve |
| US8967194B2 (en) | 2011-12-30 | 2015-03-03 | Beijing Aeonmed Co., Ltd. | Bypass valve |
| CN103182136B (en) * | 2011-12-30 | 2015-09-30 | 北京谊安医疗系统股份有限公司 | Medical pneumatic control valve |
| EA025719B1 (en) * | 2011-12-30 | 2017-01-30 | Бейджин Аеонмед Ко., Лтд. | Bypass valve |
| CN103893894A (en) * | 2012-12-27 | 2014-07-02 | 北京谊安医疗系统股份有限公司 | Pneumatic control valve for anesthetic evaporator and anesthetic evaporator control method implemented by pneumatic control valve |
| CN103893894B (en) * | 2012-12-27 | 2016-04-20 | 北京谊安医疗系统股份有限公司 | Anesthesia evaporator Pneumatic valve and the method that anesthesia evaporator is controlled thereof |
| CN111904864A (en) * | 2020-09-03 | 2020-11-10 | 温州医科大学附属第一医院 | Traditional Chinese medicine decocting device |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20120829 Effective date of abandoning: 20150930 |
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| RGAV | Abandon patent right to avoid regrant |