CN208301975U - A kind of external counterpulsation Air inflating and exhausting valve - Google Patents

Abstract

The utility model relates to a kind of external counterpulsation Air inflating and exhausting valves, including valve block, inflation electromagnet, exhaust electromagnet, be equipped in valve block a cavity and and porting, inflation sleeve and exhaust sleeve are fixedly installed in the cavity of valve block, is each provided with through-hole in inflation sleeve and exhaust sleeve；Valve block is equipped with inflating port and exhaust outlet；Inflation spool and inflation valve core reseting spring are installed in inflation sleeve, exhaust plug and exhaust plug reset spring are installed in exhaust sleeve；Exhaust plug, inflation spool respectively include cylindrical barrel portion and transmission bar portion；Inflation spool, the respective transmission bar portion of exhaust plug stretch out in valve block；Inflation electromagnet is mounted on valve block and connect with the transmission bar portion of inflation spool；Exhaust electromagnet is mounted on valve block and connect with the transmission bar portion of exhaust plug.The utility model has high production efficiency, production cost low, easy to maintenance, can save for user the features such as using required cost, being beneficial to energy conservation environmental protection.

Description

A kind of external counterpulsation Air inflating and exhausting valve

Technical field

The utility model relates to medical device technology technical field, especially a kind of external counterpulsation Air inflating and exhausting valve.

Background technique

External counterpulsation is a kind of non-invasive aid blood circulation method.It is to be forced in diastole by air bag Limbs and Gluteal artery blood reflux are to aorta, to improve the pressure and blood volume of aorta, to increase the weight such as heart and brain kidney Want the hemoperfusion amount of organ.And Air inflating and exhausting valve is the key that executive component on external counterpulsation apparatus, effect is control air bag Inflation and exhaust, reach orderly compressing in vitro and vasodilator, to complete the medical procedure of external counterpulsation.

External counterpulsation Air inflating and exhausting valve currently on the market mainly has the following two kinds:

One is a kind of: scheme as described in Chinese Patent Application No. 01271520.4, entitled " electromagnetic gas-supplying valve " that Sample is equipped with two coil cases built in the valve body of the Air inflating and exhausting valve of this scheme, composite valve group is equipped in each coil case Part resets and is equipped with armature on valve member, to realize that resetting valve member can be in coil case in the case where coil case is powered On the one hand middle movement, the structure of this type need to use dedicated coil case, but also need to install on composite valve component Upper armature, make it there are structures it is complex, the shortcomings that high production cost, on the other hand because built in coil case, and coil case And a component being easily damaged so that coil case damage when replacement get up it is highly inconvenient, maintenance difficulty is big, Yong Huzhi It connects and is abandoned and be will cause waste, be unfavorable for energy conservation and environmental protection.

Another kind is: such as Chinese Patent Application No. 201320649309.4, entitled " environment-friendly type external counterpulsation is dedicated to fill row Scheme described in air valve " is such, and the Air inflating and exhausting valve of this scheme includes top plate, cavity and pedestal, and top plate and cavity surround main chamber Body, pedestal are equipped with inlet plenum, open on top plate and be equipped with exhaustion plate, form exhaust chamber between the exhaustion plate and top plate, into Gas chamber, exhaust chamber are connected with main cavity respectively, although this Air inflating and exhausting valve use two external electromagnet into Vent closure effect in gas chamber in inlet seal part and exhaust chamber, inlet plenum and row due to this Air inflating and exhausting valve Gas chamber is that not in the same plane, and two electromagnet are separately mounted on top plate and exhaustion plate, cause inlet seal part, The mandrel that vent closure is connect with electromagnet is different in size in structure, so that needing to process different length in production Two mandrels, substantially reduce ground production efficiency, improve the production cost of product, be unfavorable for the development of enterprise.

Utility model content

The purpose of this utility model is to provide a kind of external counterpulsation Air inflating and exhausting valve, which has structure letter List, design science, high production efficiency, production cost are low, are conducive to the development, easy to maintenance of enterprise, not only contribute to as user It saves and uses required cost, the advantages that not will cause waste also, be beneficial to energy conservation environmental protection.

The technical solution of the utility model is achieved in that a kind of external counterpulsation Air inflating and exhausting valve, including valve block, fills Pneumoelectric magnet, exhaust electromagnet are additionally provided with and the sky on the valve block it is characterized in that being equipped with a cavity in the valve block The porting that chamber connects is fixedly installed with inflation sleeve and exhaust sleeve in the cavity of valve block, inflation sleeve with The through-hole for making its inner cavity be connected with the porting is each provided in exhaust sleeve；The valve block is equipped with and is only capable of and fills The inflating port that the inner cavity of air-casing cylinder connects is additionally provided with the exhaust for being only capable of connecting with the inner cavity of exhaust sleeve on valve block Mouthful；Inflation spool and inflation valve core reseting spring are installed, the inflation spool includes connection in the inner cavity of the inflation sleeve Cylindrical barrel portion and transmission bar portion together；Exhaust plug is installed in the inner cavity of the exhaust sleeve and exhaust plug resets bullet Spring；The exhaust plug includes the cylindrical barrel portion to link together and transmission bar portion；Inflate the transmission bar portion and exhaust valve of spool The transmission bar portion of core stretches out in valve block；The inflation spool can inflation sleeve movement relatively, inflate spool with its circle Deceleration column closes inflating port to the gas circuit between porting；The exhaust plug can exhaust sleeve movement relatively, exhaust Spool closes porting to the gas circuit between exhaust outlet with its cylindrical barrel portion；The inflation electromagnet is mounted on valve block, And the inflation electromagnet is connect with the transmission bar portion of inflation spool；The exhaust electromagnet is mounted on valve block, and the exhaust The connection of the transmission bar portion of electromagnet and exhaust plug.

Further, plastic bearing is installed, on the periphery of the cylindrical barrel portion of the inflation spool in the inflation sleeve Equipped with an annular groove, sealing ring is installed in annular groove；Pass through the plastic bearing and the sealing between inflation sleeve and inflation spool Circle carries out gas sealing.

Still further, plastic bearing is installed in the exhaust sleeve, the periphery of the cylindrical barrel portion of the exhaust plug It is equipped with an annular groove, sealing ring is installed in annular groove；Pass through the plastic bearing between exhaust sleeve and exhaust plug and this is close Seal carries out gas sealing.

The utility model has the beneficial effects that the utility model will be by that will inflate electromagnet, exhaust electromagnet is mounted on valve body On the outside of seat, allows and directly replaced when inflating electromagnet, exhaust electromagnet damage, nor need to design Out exclusively with inflation electromagnet or exhaust electromagnet use for the utility model, make the utility model have structure it is simple, It is design science, easy to maintenance, it not only contributes to save for user and uses required cost, not will cause waste also, be beneficial to energy conservation The advantage of environmental protection；In addition, the utility model in the cavity of valve block by being fixedly installed with inflation sleeve and exhaust sleeve Design, inflation sleeve, exhaust sleeve are mounted in same cavity, and corresponding be equipped with inflates spool, exhaust plug, keeps this practical It is novel to use the inflation sleeve of identical structure and specification and the inflation spool and exhaust valve of exhaust sleeve and identical structure and specification Core makes the components in the utility model have versatility, does not need the sleeve for producing various structures or spool, keeps this practical It is novel to have high production efficiency, production cost low, the advantages of being conducive to the development of enterprise.

Detailed description of the invention

Fig. 1 is the broken section structural schematic diagram of the utility model.

Fig. 2 is the positive structure diagram of the utility model.

Fig. 3 is the side structure schematic view of the utility model.

Fig. 4 is the schematic cross-sectional view of the inflation spool of the utility model.

Fig. 5 is the schematic cross-sectional view of the exhaust plug of the utility model.

Description of symbols: 1- valve block, 11- cavity, 12- porting, 13- inflating port, 14- exhaust outlet, 15- chamber Seat, 16- inflation end cap, 17- exhaust end cover, 18- inflation end connector, 19- exhaust end connector, 2- inflation electromagnet, 3- exhaust electricity Magnet, 4- inflation sleeve, 41- inflation spool, 42- inflation valve core reseting spring, 5- exhaust sleeve, 51- exhaust plug, 52- row Gas valve core reset spring, 61- cylindrical barrel portion, 62- transmission bar portion, 63- venthole, 64- annular groove, 65- press bulge loop, 7- plastic shaft It holds, 8- sealing ring, 9- sealing ring, 10- seal sleeve, 20- buffer rubber gasket, 30- fixed part, 40- silencer mechanism, 401- disappear Sound device cylinder, 402- screw shackle, 403- low-density sponge, 404- mesh stainless (steel) wire, 405- stainless steel olive net, 406- elasticity Retaining ring, 50- through-hole.

Specific embodiment

As shown in figure 1, figure 2, figure 3, figure 4 and figure 5, a kind of external counterpulsation Air inflating and exhausting valve described in the utility model, including valve Housing 1, inflation electromagnet 2, exhaust electromagnet 3, a cavity 11 is equipped in the valve block 1, is additionally provided on the valve block 1 and institute The porting 12 that cavity 11 connects is stated, is fixedly installed with inflation sleeve 4 and exhaust sleeve 5 in the cavity 11 of valve block 1, The porting 12 is opened on the valve block 1 between inflation sleeve 4 and exhaust sleeve 5, in inflation sleeve 4 and exhaust The through-hole 50 for making its inner cavity be connected with the porting 12 is each provided on sleeve 5；The valve block 1 be equipped be only capable of with The inflating port 13 that the inner cavity of inflation sleeve 4 connects is additionally provided on valve block 1 and is only capable of connecting with the inner cavity of exhaust sleeve 5 Exhaust outlet 14；Inflation spool 41 and inflation valve core reseting spring 42, the inflation are installed in the inner cavity of the inflation sleeve 4 Spool 41 includes the cylindrical barrel portion 61 to link together and transmission bar portion 62；Exhaust is installed in the inner cavity of the exhaust sleeve 5 Spool 51 and exhaust plug reset spring 52；The exhaust plug 51 includes the cylindrical barrel portion 61 to link together and transmission bar portion 62；The transmission bar portion 62 of the transmission bar portion 62 and exhaust plug 51 of inflating spool 41 stretches out in valve block 1, the utility model Inflation sleeve 4, exhaust sleeve 5 are mounted in same cavity 11, and the utility model is allowed to use filling for identical structure and specification Air-casing cylinder 4 and the inflation spool 41 of exhaust sleeve 5 and identical structure and specification and exhaust plug 51, make zero in the utility model Part has versatility, does not need the sleeve for producing various structures or spool, and the utility model is made to have high production efficiency, production It is at low cost, the advantages of being conducive to the development of enterprise；The inflation spool 41 inflation sleeve 4 can move relatively, inflate spool 41 close inflating port 13 to the gas circuit between porting 12 with its cylindrical barrel portion 61；The exhaust plug 51 can the relatively described row Air-casing cylinder 5 moves, and exhaust plug 51 closes porting 12 to the gas circuit between exhaust outlet 14 with its cylindrical barrel portion 61；In order to make The inflation spool 41 and the structure of exhaust plug 51 of utility model are more reasonable, enable between inflating port 13 and porting 12 Gas circuit is connected, and the gas circuit between porting 12 and exhaust outlet 14 is connected, as shown in Figure 1, the circle of the inflation spool 41 Venthole 63 is equipped between deceleration column 61 and transmission bar portion 62, between the cylindrical barrel portion 61 and transmission bar portion 62 of the exhaust plug 51 It also is provided with venthole 63；The inflation electromagnet 2 is mounted on valve block 1, and the biography of the inflation electromagnet 2 and inflation spool 41 Lever portion 62 connects；The exhaust electromagnet 3 is mounted on valve block 1, and the transmission of the exhaust electromagnet 3 and exhaust plug 51 Bar portion 62 connects.The utility model, which passes through, will inflate electromagnet 2, exhaust electromagnet 3 is mounted on the design outside valve block 1, make Inflate electromagnet 2, exhaust electromagnet 3 damage when can directly be replaced, nor need design exclusively with Inflation electromagnet 2 or exhaust electromagnet 3 used for the utility model, make the utility model have structure simple, design science, It is easy to maintenance, it not only contributes to save for user using required cost, not will cause waste also, be beneficial to energy conservation the excellent of environmental protection Point.

In order to make the better tightness of the utility model, makes to inflate and realizes and be tightly connected between spool 41 and inflation sleeve 4, As Figure 1 and Figure 4, plastic bearing 7, the periphery of the cylindrical barrel portion 61 of the inflation spool 41 are installed in the inflation sleeve 4 It is equipped with an annular groove 64, sealing ring 8 is installed in annular groove 64；Pass through the plastic shaft between inflation sleeve 4 and inflation spool 41 Hold 7 and the sealing ring 8 carry out gas sealing.Similarly, in order to make between exhaust plug 51 and exhaust sleeve 5 realize sealing connect It connects, as shown in Figure 1, shown in Figure 5, plastic bearing 7 is installed in the exhaust sleeve 5, the cylindrical barrel portion 61 of the exhaust plug 51 Periphery is equipped with an annular groove 64, and sealing ring 8 is equipped in annular groove 64；Pass through the modeling between exhaust sleeve 5 and exhaust plug 51 Material bearing 7 and the sealing ring 8 carry out gas sealing.

In order to keep the structure of the valve block 1 of the utility model simpler, produce the valve block 1 of the utility model It is more easier, as shown in Figure 1 and Figure 2, the valve block 1 includes chamber seat 15, inflation end cap 16, exhaust end cover 17, inflation end connector 18, it is vented end connector 19, the chamber seat 15 is equipped with two upper accents and two lower accents, the porting 12 are located at chamber seat On 15；It is covered respectively on the upper accent of two of the chamber seat 15 and is equipped with the inflation end cap 16, exhaust end cover 17, the two of chamber seat 15 The inflation end connector 18, exhaust end connector 19 are separately installed on a lower accent, it is described to be formed in chamber seat 15 Cavity 11；The inflation sleeve 4 is set between inflation end cap 16 and inflation end connector 18, the drive rod of the inflation spool 41 Portion 62 passes through inflation end cap 16 and connect with inflation electromagnet 2, and inflating port 13 is located on the inflation end connector 18；The exhaust Sleeve 5 is set between exhaust end cover 17 and exhaust end connector 19, and the transmission bar portion 62 of the exhaust plug 51 passes through exhaust End cap 17 is connect with exhaust electromagnet 3, and exhaust outlet 14 is located on the exhaust end connector 19.Herein it should be understood that The inflation end cap 16 of the utility model, the structure of exhaust end cover 17 are duplicate two components, for no other reason than that practical at this The difference of novel middle installation site and the different names taken.

In order to further improve the leakproofness of the utility model, make 61 overhead of cylindrical barrel portion for inflating spool 41 in inflation It is able to achieve sealed connection after on end cap 16, is able to achieve 61 overhead of cylindrical barrel portion of exhaust plug 51 after on exhaust end cover 17 close Envelope connection, as shown in Figure 1, being also each equipped with sealing ring on the inflation end cap 16, the respective inner face of exhaust end cover 17 9；The transmission bar portion 62 of the inflation spool 41 passes through inflation end cap 16 through its corresponding sealing ring 9；The exhaust plug 51 transmission bar portion 62 passes through exhaust end cover 17 through its corresponding sealing ring 9.In addition, inflation end cap 16, exhaust end cover 17 Also there is sealing ring 9 on respective inner face buffer function to inflate spool 41 when inflation spool 41, exhaust plug 51 reset Cylindrical barrel portion 61 will not with inflation end cap 16 directly collide, the cylindrical barrel portion 61 of exhaust plug 51 will not be with exhaust end cover 17 directly collide, and greatly improve the service life of the utility model.

In order to further improve the leakproofness of the utility model, make the transmission bar portion 62 for inflating spool 41 and inflation end cap Realized between 16 and be tightly connected, realize and be tightly connected between the transmission bar portion 62 and exhaust end cover 17 of exhaust plug 51, as Fig. 1, Shown in Fig. 4, Fig. 5, the inner wall for the perforation that the transmission bar portion 62 for inflating spool 41 of the inflation end cap 16 passes through is equipped with sealing Sleeve 10 is equipped with the sealing ring 8 with 10 mating reaction of seal sleeve in the transmission bar portion 62 of inflation spool 41, specific real Shi Shi is equipped in the transmission bar portion 62 of inflation spool 41 and is nested with annular groove 64 for sealing ring 8；The exhaust end cover 17 for exhaust valve The inner wall for the perforation that the transmission bar portion 62 of core 51 passes through also is provided with seal sleeve 10, sets in the transmission bar portion 62 of exhaust plug 51 There is the sealing ring 8 with 10 mating reaction of the seal sleeve.

In order to prevent in use, avoid inflation spool 41 that from issuing sound, exhaust with the inflation collision of end connector 18 Spool 51 and the exhaust collision of end connector 19 issue sound, as shown in Figure 1, Figure 4, Figure 5, the inflation end connector 18, exhaust termination It is respectively equipped with a buffer rubber gasket 20 on first 19, further respectively has spring suit on inflation end connector 18, exhaust end connector 19 Portion, the respective internal chamber wall of cylindrical barrel portion 61 of the cylindrical barrel portion 61, exhaust plug 51 of inflating spool 41 are equipped with press bulge loop 65, It is described inflation valve core reseting spring 42 be compressed in inflation spool 41 press bulge loop 65 to inflation end connector 18 between, and inflate One end of valve core reseting spring 42 is placed on the spring suit portion of inflation end connector 18；The exhaust plug reset spring 52 is compressed In exhaust plug 51 press bulge loop 65 between exhaust end connector 19, and one end of exhaust plug reset spring 52 is placed on exhaust The spring suit portion of end connector 19.

In order to make the inflation end cap 16, exhaust end cover 17, inflation end connector 18, exhaust end connector 19 and chamber of the utility model It realizes and is tightly connected between seat 15, as shown in Figure 1, the inflation end cap 16, exhaust end cover 17, inflation end connector 18, exhaust end Fixed part 30, the inflation end cap 16, exhaust end cover 17, inflation end connector 18, exhaust end connector 19 are respectively equipped on connector 19 It is fixedly mounted on chamber seat 15 by passing through the bolt of its fixed part 30, in the inflation end cap 16, exhaust end cover 17, is filled respectively Sealing ring 8, the inflation sleeve 4 and inflation end connector are respectively equipped between gas end connector 18, exhaust end connector 19 and chamber seat 15 It also is provided with sealing ring 8 between 18, also is provided with sealing ring 8 between exhaust sleeve 5 and exhaust end connector 19.It needs herein Be: all sealing rings 8 used by the utility model are all the annular seal rings of conventional structure, and only radius size mutual is different ?.

In order to avoid the utility model can make a sound in exhaust, as shown in Figure 1, the utility model further includes silencer Mechanism 40, the described silencer mechanism 40 are stainless including silencer cylinder 401, screw shackle 402, low-density sponge 403, mesh Steel mesh 404, stainless steel olive net 405, circlip 406, the circlip 406 are mounted on wherein the one of silencer cylinder 401 In nozzle, the screw shackle 402 is mounted in another nozzle of silencer cylinder 401, the screw shackle 402 to bullet Property retaining ring 406 between silencer cylinder 401 in the low-density sponge 403, mesh stainless (steel) wire 404, no are sequentially installed Become rusty steel olive net 405, and the silencer mechanism 40 is connected through a screw thread ring 402 and is connected on the exhaust outlet 14 of valve block 1.

In use, the inflation end connector 18 of the utility model is connect with high-pressure air source, and porting 12 then with air bag Connection, the utility model have two kinds of processes of inflation and exhaust:

When being inflated to air bag, keeping porting 12 to the gas circuit between exhaust outlet 14 is closed, inflation electricity Magnet 2 be powered push inflation spool 41 cylindrical barrel portion 61 moved along inflation sleeve 4, make inflate spool 41 cylindrical barrel portion 61 from Open its corresponding sealing ring 9, to open inflating port 13 to the gas circuit between porting 12, high-pressure air source at this time to air bag into Row inflation, after the completion of inflation, inflation electromagnet 2 is powered off, and 2 pairs of ineffective power of inflation spool 41 of electromagnet are inflated after power-off, The recovery of cylindrical barrel portion 61 of inflation spool 41 compresses the sealing ring 9 corresponding to it under the action of inflating valve core reseting spring 42, To close inflating port 13 to the gas circuit between porting 12.

When being exhausted to air bag, keeping inflating port 13 to the gas circuit between porting 12 is closed, exhaust electricity Magnet 3 be powered push exhaust plug 51 cylindrical barrel portion 61 moved along exhaust sleeve 5, make the cylindrical barrel portion 61 of exhaust plug 51 from Its corresponding sealing ring 9 is opened, to open porting 12 to the gas circuit between exhaust outlet 14, the high pressure gas in air bag is in gas It is extruded under the convergent force of capsule itself, is discharged by exhaust outlet 12, after the completion of exhaust, exhaust electromagnet 3 is powered off, and powers off heel row Pneumoelectric magnet 3 is to the ineffective power of exhaust plug 51, the cylinder of exhaust plug 51 under the action of exhaust plug reset spring 52 The recovery of canister portion 61 compresses the sealing ring 9 corresponding to it, is next to close porting 12 to the gas circuit between exhaust outlet 14 Secondary gas replenishment process is prepared.

Claims (9)

1. a kind of external counterpulsation Air inflating and exhausting valve, including valve block, inflation electromagnet, exhaust electromagnet, it is characterised in that:

It is equipped with a cavity in the valve block, the porting to connect with the cavity is additionally provided on the valve block, in valve body It is fixedly installed with inflation sleeve and exhaust sleeve in the cavity of seat, being each provided on inflation sleeve and exhaust sleeve makes its inner cavity The through-hole being connected with the porting；

The valve block, which is equipped with, is only capable of the inflating port that connects with the inner cavity of inflation sleeve, be additionally provided on valve block be only capable of with The exhaust outlet that the inner cavity of exhaust sleeve connects；

Inflation spool and inflation valve core reseting spring are installed, the inflation spool includes connection in the inner cavity of the inflation sleeve Cylindrical barrel portion and transmission bar portion together；Exhaust plug is installed in the inner cavity of the exhaust sleeve and exhaust plug resets bullet Spring；The exhaust plug includes the cylindrical barrel portion to link together and transmission bar portion；Inflate the transmission bar portion and exhaust valve of spool The transmission bar portion of core stretches out in valve block；The inflation spool can inflation sleeve movement relatively, inflate spool with its circle Deceleration column closes inflating port to the gas circuit between porting；The exhaust plug can exhaust sleeve movement relatively, exhaust Spool closes porting to the gas circuit between exhaust outlet with its cylindrical barrel portion；

The inflation electromagnet is mounted on valve block, and the inflation electromagnet is connect with the transmission bar portion of inflation spool；

The exhaust electromagnet is mounted on valve block, and the transmission bar portion of the exhaust electromagnet and exhaust plug connects.

2. extracorporeal counterpulsation Air inflating and exhausting valve according to claim 1, it is characterised in that: be equipped with plastic shaft in the inflation sleeve It holds, the periphery of the cylindrical barrel portion of the inflation spool is equipped with an annular groove, and sealing ring is equipped in annular groove；Inflation sleeve with fill Gas sealing is carried out by the plastic bearing and the sealing ring between gas valve core.

3. extracorporeal counterpulsation Air inflating and exhausting valve according to claim 1, it is characterised in that: be equipped with plastic shaft in the exhaust sleeve It holds, the periphery of the cylindrical barrel portion of the exhaust plug is equipped with an annular groove, and sealing ring is equipped in annular groove；Exhaust sleeve and row Gas sealing is carried out by the plastic bearing and the sealing ring between gas valve core.

4. external counterpulsation Air inflating and exhausting valve according to claim 1, it is characterised in that: the valve block includes chamber seat, inflation End cap, exhaust end cover, inflation end connector, exhaust end connector, the chamber seat is equipped with two upper accents and two lower accents, described Porting is located on chamber seat；

Lid is equipped with the inflation end cap, exhaust end cover, two lower accents of chamber seat respectively on the upper accent of two of the chamber seat On be separately installed with the inflation end connector, exhaust end connector, to be formed with the cavity in chamber seat；

The inflation sleeve is set between inflation end cap and inflation end connector, and the transmission bar portion of the inflation spool passes through inflation End cap is connect with inflation electromagnet, and inflating port is located on the inflation end connector；

The exhaust sleeve is set between exhaust end cover and exhaust end connector, and the transmission bar portion of the exhaust plug passes through row Gas end cap is connect with exhaust electromagnet, and exhaust outlet is located on the exhaust end connector.

5. external counterpulsation Air inflating and exhausting valve according to claim 4, it is characterised in that: in the inflation end cap, exhaust end cover Sealing ring is also each installed on respective inner face；The transmission bar portion of the inflation spool is worn through its corresponding sealing ring Gas overcharging end cap；The transmission bar portion of the exhaust plug passes through exhaust end cover through its corresponding sealing ring.

6. external counterpulsation Air inflating and exhausting valve according to claim 4, it is characterised in that: it is described inflation end cap for inflate spool The inner wall of perforation that passes through of transmission bar portion be equipped with seal sleeve, be equipped in the transmission bar portion of inflation spool and the seal sleeve The sealing ring of mating reaction；The inner wall for the perforation of the exhaust end cover passed through for the transmission bar portion of exhaust plug also is provided with sealing Sleeve is equipped with the sealing ring with the seal sleeve mating reaction in the transmission bar portion of exhaust plug.

7. external counterpulsation Air inflating and exhausting valve according to claim 4, it is characterised in that: the inflation end connector, exhaust termination It is respectively equipped with a buffer rubber gasket on head, further respectively has spring suit portion, charge valve on inflation end connector, exhaust end connector The cylindrical barrel portion of core, the respective internal chamber wall of cylindrical barrel portion of exhaust plug are equipped with press bulge loop, the inflation valve core reset bullet Spring is compressed between the press bulge loop extremely inflation end connector of inflation spool, and the one end for inflating valve core reseting spring is placed on inflation The spring suit portion of end connector；The exhaust plug reset spring is compressed in the press bulge loop of exhaust plug to being vented end connector Between, and one end of exhaust plug reset spring is placed on the spring suit portion of exhaust end connector.

8. external counterpulsation Air inflating and exhausting valve according to claim 4, it is characterised in that: the inflation end cap, fills exhaust end cover Fixed part, the inflation end cap, exhaust end cover, inflation end connector, exhaust termination are respectively equipped on gas end connector, exhaust end connector Head is fixedly mounted on chamber seat by passing through the bolt of its fixed part respectively, in the inflation end cap, exhaust end cover, inflation termination It is respectively equipped with sealing ring between head, exhaust end connector and chamber seat, also is provided with sealing between the inflation sleeve and inflation end connector Circle also is provided with sealing ring between exhaust sleeve and exhaust end connector.

9. extracorporeal counterpulsation Air inflating and exhausting valve according to claim 1, it is characterised in that: further include silencer mechanism, described this disappears Sheng Qi mechanism includes silencer cylinder, screw shackle, low-density sponge, mesh stainless (steel) wire, stainless steel olive net, circlip, The circlip is mounted in a wherein nozzle for silencer cylinder, and the screw shackle is mounted on the another of silencer cylinder The low-density sea is sequentially installed in one nozzle, in the screw shackle to the silencer cylinder between circlip Silk floss, mesh stainless (steel) wire, stainless steel olive net, the silencer mechanism are connected through a screw thread ring and are connected on the exhaust outlet of valve block.