CN107320844B - Air charging and discharging valve for external counterpulsation - Google Patents
Air charging and discharging valve for external counterpulsation Download PDFInfo
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- CN107320844B CN107320844B CN201710784510.6A CN201710784510A CN107320844B CN 107320844 B CN107320844 B CN 107320844B CN 201710784510 A CN201710784510 A CN 201710784510A CN 107320844 B CN107320844 B CN 107320844B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
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Abstract
The invention relates to a charging and discharging valve for external counterpulsation, which comprises a valve body seat, a charging electromagnet and a discharging electromagnet, wherein a cavity and an air inlet and outlet are arranged in the valve body seat; the valve body seat is provided with an inflation inlet and an exhaust outlet; an inflation valve core and an inflation valve core reset spring are installed in the inflation sleeve, and an exhaust valve core reset spring are installed in the exhaust sleeve; the exhaust valve core and the inflation valve core respectively comprise a cylindrical barrel part and a transmission rod part; the transmission rod parts of the inflation valve core and the exhaust valve core extend out of the valve body seat; the inflation electromagnet is arranged on the valve body seat and connected with the transmission rod part of the inflation valve core; the exhaust electromagnet is arranged on the valve body seat and connected with the transmission rod part of the exhaust valve core. The invention has the characteristics of high production efficiency, low production cost, convenient maintenance, energy saving, environmental protection and the like, and can save the cost required by use for users without waste.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a gas charging and discharging valve for external counterpulsation.
Background
Extracorporeal counterpulsation is a non-invasive method of assisting blood circulation. In diastole, blood in limbs and hip arteries is forced to flow back to an aorta through an air bag so as to improve the pressure and blood volume of the aorta, and thus the blood perfusion of important organs such as heart, brain, kidney and the like is increased. The air charging and discharging valve is a key executing element on the external counterpulsation device and is used for controlling the air charging and discharging of the air bag to achieve the purpose of orderly oppressing and relaxing blood vessels in vitro, thereby completing the medical process of external counterpulsation.
The charging and discharging valves for external counterpulsation in the current market mainly comprise the following two types:
one is that: for example, as in the scheme of chinese patent application No. 01271520.4 entitled "an electromagnetic air supply valve", the valve body of the air charging and discharging valve of this scheme is internally provided with two coil bodies, each coil body is provided with a composite valve assembly, and the reset valve assembly is provided with an armature, so that the reset valve assembly can move in the coil body when the coil body is energized.
The other is as follows: as the scheme of the Chinese patent application No. 201320649309.4 and named as "special inflation and exhaust valve for environment-friendly external counterpulsation", the inflation and exhaust valve of this scheme includes a top plate, a cavity and a base, the top plate and the cavity enclose a main cavity, the base is provided with an air inlet chamber, the top plate is provided with an exhaust plate, an exhaust chamber is formed between the exhaust plate and the top plate, the air inlet chamber and the exhaust chamber are respectively communicated with the main cavity, although the inflation and exhaust valve adopts two external electromagnets to act on an air inlet sealing member in the air inlet chamber and an exhaust sealing member in the exhaust chamber, because the air inlet chamber and the exhaust chamber of the inflation and exhaust valve are not on the same plane, and the two electromagnets are respectively arranged on the top plate and the exhaust plate, the mandrels of the air inlet sealing member and the exhaust sealing member connected with the electromagnets are different in structure, so that two mandrels with different lengths need to be processed during production, the production efficiency is greatly reduced, the production cost of the product is increased, and the development of enterprises is not beneficial.
Disclosure of Invention
The invention aims to provide a gas charging and discharging valve for external counterpulsation, which has the advantages of simple structure, scientific design, high production efficiency, low production cost, contribution to development and convenient maintenance of enterprises, contribution to saving the cost required by use for users, no waste, contribution to energy conservation, environmental protection and the like.
The technical scheme of the invention is realized as follows: a kind of external counterpulsation uses and fills the exhaust valve, including valve body base, fills the electro-magnet, exhaust the electro-magnet, characterized by that there is a cavity pocket in the said valve body base, there are air admission and exhaust outlet communicated with said cavity pocket on the valve body base, fixedly install and inflate bush and exhaust bush in the cavity pocket of the valve body base, have make their cavity pocket and said through hole that air admission and exhaust outlet communicate on inflating bush and exhaust bush separately; the valve body seat is provided with an inflation inlet which can only be communicated with the inner cavity of the inflation sleeve, and the valve body seat is also provided with an exhaust outlet which can only be communicated with the inner cavity of the exhaust sleeve; an inflation valve core and an inflation valve core reset spring are installed in the inner cavity of the inflation sleeve, and the inflation valve core comprises a cylindrical barrel part and a transmission rod part which are connected together; an exhaust valve core and an exhaust valve core return spring are arranged in the inner cavity of the exhaust sleeve; the exhaust valve core comprises a cylindrical barrel part and a transmission rod part which are connected together; the transmission rod part of the inflating valve core and the transmission rod part of the exhaust valve core extend out of the valve body seat; the inflation valve core can move relative to the inflation sleeve, and the cylindrical barrel part of the inflation valve core seals an air path from the inflation port to the air inlet and outlet; the exhaust valve core can move relative to the exhaust sleeve, and the cylindrical barrel part of the exhaust valve core seals a gas path from the gas inlet and outlet to the gas outlet; the inflation electromagnet is arranged on the valve body seat and is connected with the transmission rod part of the inflation valve core; the exhaust electromagnet is arranged on the valve body seat and is connected with the transmission rod part of the exhaust valve core.
Furthermore, a plastic bearing is installed in the inflation sleeve, an annular groove is formed in the periphery of the cylindrical barrel part of the inflation valve core, and a sealing ring is installed in the annular groove; the air-filled sleeve and the air-filled valve core are sealed in an air-tight way through the plastic bearing and the sealing ring.
Furthermore, a plastic bearing is installed in the exhaust sleeve, an annular groove is formed in the periphery of the cylindrical barrel part of the exhaust valve core, and a sealing ring is installed in the annular groove; the air seal is carried out between the exhaust sleeve and the exhaust valve core through the plastic bearing and the sealing ring.
The invention has the beneficial effects that: the inflation electromagnet and the exhaust electromagnet are arranged on the outer part of the valve body seat, so that the inflation electromagnet and the exhaust electromagnet can be directly replaced when damaged, and the inflation electromagnet or the exhaust electromagnet specially used does not need to be designed for use, so that the valve has the advantages of simple structure, scientific design, convenience in maintenance, energy conservation and environmental friendliness, and is beneficial to saving the cost required by use for a user, avoiding waste and saving energy; in addition, the design that the inflation sleeve and the exhaust sleeve are fixedly arranged in the cavity of the valve body seat, the inflation sleeve and the exhaust sleeve are arranged in the same cavity, and the inflation valve core and the exhaust valve core are correspondingly arranged, so that the inflation valve core and the exhaust valve core with the same structural specification can be adopted, parts in the inflation sleeve and the exhaust sleeve with the same structural specification can be universal, and sleeves or valve cores with various structures do not need to be produced, so that the inflation valve core and the exhaust valve core have the advantages of high production efficiency, low production cost and contribution to the development of enterprises.
Drawings
Fig. 1 is a partial sectional structural view of the present invention.
Fig. 2 is a schematic front view of the present invention.
FIG. 3 is a side view of the present invention.
Fig. 4 is a schematic sectional view of the inflation valve cartridge of the present invention.
Fig. 5 is a schematic cross-sectional view of the vent valve cartridge of the present invention.
Description of reference numerals: 1-valve body seat, 11-cavity, 12-air inlet and outlet, 13-air charging port, 14-air outlet, 15-cavity seat, 16-air charging end cover, 17-air discharging end cover, 18-air charging end connector, 19-air discharging end connector, 2-air charging electromagnet, 3-air discharging electromagnet, 4-air charging sleeve, 41-air charging valve core, 42-air charging valve core reset spring, 5-air discharging sleeve, 51-air discharging valve core, 52-air discharging valve core reset spring, 61-cylindrical barrel part, 62-transmission rod part, 63-vent hole, 64-annular groove, 65-top pressing convex ring, 7-plastic bearing, 8-sealing ring, 9-sealing ring, 10-sealing sleeve, 20-buffer rubber gasket, 30-fixing part, 40-silencer mechanism, 401-silencer barrel, 402-thread, 403-low density sponge, 404-mesh stainless steel net, 405-stainless steel net, 406-elastic retainer ring and 50-through hole.
Detailed Description
As shown in fig. 1, fig. 2, fig. 3, fig. 4, and fig. 5, the inflation/exhaust valve for external counterpulsation according to the present invention includes a valve body seat 1, an inflation electromagnet 2, and an exhaust electromagnet 3, wherein a cavity 11 is disposed in the valve body seat 1, an air inlet/outlet port 12 communicated with the cavity 11 is further disposed on the valve body seat 1, an inflation sleeve 4 and an exhaust sleeve 5 are fixedly mounted in the cavity 11 of the valve body seat 1, the air inlet/outlet port 12 is disposed on the valve body seat 1 between the inflation sleeve 4 and the exhaust sleeve 5, and through holes 50 are respectively disposed on the inflation sleeve 4 and the exhaust sleeve 5 to communicate the inner cavities thereof with the air inlet/outlet port 12; the valve body seat 1 is provided with an inflation inlet 13 which can only be communicated with the inner cavity of the inflation sleeve 4, and the valve body seat 1 is also provided with an exhaust port 14 which can only be communicated with the inner cavity of the exhaust sleeve 5; an inflation valve core 41 and an inflation valve core return spring 42 are arranged in the inner cavity of the inflation sleeve 4, and the inflation valve core 41 comprises a cylindrical barrel part 61 and a transmission rod part 62 which are connected together; an exhaust valve core 51 and an exhaust valve core return spring 52 are arranged in the inner cavity of the exhaust sleeve 5; the exhaust valve core 51 comprises a cylindrical barrel part 61 and a transmission rod part 62 which are connected together; the transmission rod part 62 of the inflation valve core 41 and the transmission rod part 62 of the exhaust valve core 51 extend out of the valve body seat 1, and the inflation sleeve 4 and the exhaust sleeve 5 are arranged in the same cavity 11, so that the inflation valve core 41 and the exhaust valve core 51 with the same structural specification and the inflation sleeve 4 and the exhaust sleeve 5 with the same structural specification can be adopted, parts in the inflation valve core 41 and the exhaust valve core 51 with the same structural specification have universality, and sleeves or valve cores with various structures do not need to be produced, so that the inflation valve core has the advantages of high production efficiency, low production cost and contribution to the development of enterprises; the inflation valve core 41 can move relative to the inflation sleeve 4, and the cylindrical barrel part 61 of the inflation valve core 41 seals an air path from the inflation port 13 to the air inlet and outlet 12; the exhaust valve core 51 can move relative to the exhaust sleeve 5, and the exhaust valve core 51 seals an air path between the air inlet and outlet 12 and the air outlet 14 by a cylindrical barrel part 61; in order to make the structure of the inflation valve core 41 and the exhaust valve core 51 more reasonable, and make the inflation inlet 13 communicate with the air path between the air inlet and outlet 12, and the air path between the air inlet and outlet 12 and the air outlet 14, as shown in fig. 1, a vent 63 is arranged between the cylindrical part 61 and the transmission rod part 62 of the inflation valve core 41, and a vent 63 is also arranged between the cylindrical part 61 and the transmission rod part 62 of the exhaust valve core 51; the inflation electromagnet 2 is arranged on the valve body seat 1, and the inflation electromagnet 2 is connected with the transmission rod part 62 of the inflation valve core 41; the exhaust electromagnet 3 is mounted on the valve body seat 1, and the exhaust electromagnet 3 is connected with a transmission rod part 62 of the exhaust valve core 51. According to the invention, through the design that the inflation electromagnet 2 and the exhaust electromagnet 3 are arranged outside the valve body seat 1, the inflation electromagnet 2 and the exhaust electromagnet 3 can be directly replaced when damaged, and the inflation electromagnet 2 or the exhaust electromagnet 3 specially used does not need to be designed for use, so that the valve has the advantages of simple structure, scientific design, convenience in maintenance, no waste and energy conservation and environmental protection, and is beneficial to saving the cost required by use for a user.
In order to improve the sealing performance of the present invention and to achieve the sealing connection between the inflation valve core 41 and the inflation sleeve 4, as shown in fig. 1 and 4, a plastic bearing 7 is installed in the inflation sleeve 4, a ring groove 64 is installed on the outer periphery of the cylindrical barrel portion 61 of the inflation valve core 41, and a sealing ring 8 is installed in the ring groove 64; the space between the inflation sleeve 4 and the inflation valve core 41 is air-tightly sealed by the plastic bearing 7 and the seal ring 8. Similarly, in order to achieve a sealing connection between the exhaust valve body 51 and the exhaust sleeve 5, as shown in fig. 1 and 5, a plastic bearing 7 is installed in the exhaust sleeve 5, a ring groove 64 is formed on the outer periphery of the cylindrical barrel portion 61 of the exhaust valve body 51, and a seal ring 8 is installed in the ring groove 64; the space between the exhaust sleeve 5 and the exhaust valve body 51 is hermetically sealed by the plastic bearing 7 and the seal ring 8.
In order to make the structure of the valve body seat 1 of the present invention simpler and make the valve body seat 1 of the present invention easier to produce, as shown in fig. 1 and fig. 2, the valve body seat 1 comprises a cavity seat 15, an inflation end cover 16, an exhaust end cover 17, an inflation end connector 18 and an exhaust end connector 19, two upper cavities and two lower cavities are arranged on the cavity seat 15, and the air inlet and outlet 12 is arranged on the cavity seat 15; the two upper orifices of the cavity seat 15 are respectively covered with the inflation end cover 16 and the exhaust end cover 17, and the two lower orifices of the cavity seat 15 are respectively provided with the inflation end connector 18 and the exhaust end connector 19, so that the cavity 11 is formed in the cavity seat 15; the inflation sleeve 4 is arranged between the inflation end cover 16 and the inflation end connector 18, the transmission rod part 62 of the inflation valve core 41 penetrates through the inflation end cover 16 to be connected with the inflation electromagnet 2, and the inflation port 13 is arranged on the inflation end connector 18; the exhaust sleeve 5 is arranged between the exhaust end cover 17 and the exhaust end joint 19, the transmission rod part 62 of the exhaust valve core 51 penetrates through the exhaust end cover 17 to be connected with the exhaust electromagnet 3, and the exhaust port 14 is arranged on the exhaust end joint 19. Here, it should be noted that: the structure of the inflation end cap 16 and the exhaust end cap 17 of the present invention is two identical parts, and only the structures are given different names according to the installation positions of the present invention.
In order to further improve the sealing performance of the present invention, the cylindrical tube part 61 of the charging valve core 41 can be connected in a sealing manner after being placed on the charging end cover 16, and the cylindrical tube part 61 of the exhaust valve core 51 can be connected in a sealing manner after being placed on the exhaust end cover 17, as shown in fig. 1, the inner end surfaces of the charging end cover 16 and the exhaust end cover 17 are respectively provided with a sealing ring 9; the transmission rod part 62 of the inflation valve core 41 penetrates through the corresponding sealing ring 9 and penetrates through the inflation end cover 16; the drive rod portion 62 of the exhaust valve spool 51 extends through its corresponding seal ring 9 and through the exhaust end cap 17. In addition, the sealing rings 9 on the inner end surfaces of the inflation end cover 16 and the exhaust end cover 17 also have a buffering function, when the inflation valve core 41 and the exhaust valve core 51 are reset, the cylindrical barrel part 61 of the inflation valve core 41 cannot directly collide with the inflation end cover 16, and the cylindrical barrel part 61 of the exhaust valve core 51 cannot directly collide with the exhaust end cover 17, so that the service life of the invention is greatly prolonged.
In order to further improve the sealing performance of the present invention, a sealing connection is realized between the driving rod portion 62 of the inflation valve core 41 and the inflation end cover 16, and a sealing connection is realized between the driving rod portion 62 of the exhaust valve core 51 and the exhaust end cover 17, as shown in fig. 1, 4, and 5, a sealing sleeve 10 is provided on an inner wall of a through hole of the inflation end cover 16 through which the driving rod portion 62 of the inflation valve core 41 passes, a sealing ring 8 cooperating with the sealing sleeve 10 is provided on the driving rod portion 62 of the inflation valve core 41, and in a specific implementation, an annular groove 64 for sleeving the sealing ring 8 is provided on the driving rod portion 62 of the inflation valve core 41; the inner wall of the through hole of the exhaust end cover 17 through which the transmission rod part 62 of the exhaust valve core 51 passes is also provided with a sealing sleeve 10, and the transmission rod part 62 of the exhaust valve core 51 is provided with a sealing ring 8 which is matched with the sealing sleeve 10.
In order to prevent the inflation valve core 41 from colliding with the inflation end connector 18 to make a sound and the exhaust valve core 51 from colliding with the exhaust end connector 19 to make a sound in the using process, as shown in fig. 1, 4 and 5, the inflation end connector 18 and the exhaust end connector 19 are respectively provided with a cushion rubber pad 20, the inflation end connector 18 and the exhaust end connector 19 are also respectively provided with a spring sleeve mounting part, the inner cavity walls of the cylindrical barrel part 61 of the inflation valve core 41 and the cylindrical barrel part 61 of the exhaust valve core 51 are respectively provided with a jacking convex ring 65, the inflation valve core return spring 42 is compressed between the jacking convex ring 65 of the inflation valve core 41 and the inflation end connector 18, and one end of the inflation valve core return spring 42 is sleeved on the spring sleeve mounting part of the inflation end connector 18; the exhaust valve core return spring 52 is compressed between the top pressing convex ring 65 of the exhaust valve core 51 and the exhaust end connector 19, and one end of the exhaust valve core return spring 52 is sleeved on the spring sleeving part of the exhaust end connector 19.
In order to realize the sealing connection between the inflation end cover 16, the exhaust end cover 17, the inflation end connector 18, the exhaust end connector 19 and the cavity base 15, as shown in fig. 1, fixing parts 30 are respectively arranged on the inflation end cover 16, the exhaust end cover 17, the inflation end connector 18 and the exhaust end connector 19, the inflation end cover 16, the exhaust end cover 17, the inflation end connector 18 and the exhaust end connector 19 are respectively fixedly arranged on the cavity base 15 through bolts penetrating through the fixing parts 30, sealing rings 8 are respectively arranged between the inflation end cover 16, the exhaust end cover 17, the inflation end connector 18, the exhaust end connector 19 and the cavity base 15, a sealing ring 8 is also arranged between the inflation sleeve 4 and the inflation end connector 18, and a sealing ring 8 is also arranged between the exhaust sleeve 5 and the exhaust end connector 19. It is to be said here that: all the sealing rings 8 adopted by the invention are annular sealing rings with conventional structures, and only the radius sizes are different from each other.
In order to avoid the noise generated during the exhaust of the present invention, as shown in fig. 1, the present invention further includes a muffler mechanism 40, wherein the muffler mechanism 40 includes a muffler cylinder 401, a threaded connection ring 402, a low-density sponge 403, a mesh stainless steel net 404, a stainless steel net 405, and a circlip 406, the circlip 406 is installed in one of the mouths of the muffler cylinder 401, the threaded connection ring 402 is installed in the other mouth of the muffler cylinder 401, the low-density sponge 403, the mesh stainless steel net 404, and the stainless steel net 405 are sequentially installed in the muffler cylinder 401 between the threaded connection ring 402 and the circlip 406, and the muffler mechanism 40 is connected to the exhaust port 14 of the valve body seat 1 through the threaded connection ring 402.
In application, the inflation end connector 18 of the present invention is connected with a high pressure air source, and the air inlet and outlet 12 is connected with an air bag, and the present invention has two processes of inflation and air outlet:
when the air bag is to be inflated, the air path between the air inlet and outlet 12 and the air outlet 14 is kept closed, the inflation electromagnet 2 is electrified to push the cylindrical barrel part 61 of the inflation valve core 41 to move along the inflation sleeve 4, so that the cylindrical barrel part 61 of the inflation valve core 41 is separated from the corresponding sealing ring 9, the air path between the inflation port 13 and the air inlet and outlet 12 is opened, the air bag is inflated by a high-pressure air source at the moment, after the inflation is completed, the inflation electromagnet 2 is powered off, the inflation electromagnet 2 loses acting force on the inflation valve core 41 after the power is off, the cylindrical barrel part 61 of the inflation valve core 41 is restored to compress the corresponding sealing ring 9 under the action of the inflation valve core reset spring 42, and the air path between the inflation port 13 and the air inlet and outlet 12 is closed.
When the air bag is to be inflated, the air path between the inflation port 13 and the air inlet/outlet port 12 is kept closed, the air exhaust electromagnet 3 is electrified to push the cylindrical part 61 of the air exhaust valve core 51 to move along the air exhaust sleeve 5, so that the cylindrical part 61 of the air exhaust valve core 51 is separated from the corresponding sealing ring 9, and the air path between the air inlet/outlet port 12 and the air outlet port 14 is opened, high-pressure air in the air bag is extruded under the self contraction force of the air bag and is released through the air outlet port 12, after the air exhaust is completed, the air exhaust electromagnet 3 is powered off, the air exhaust electromagnet 3 loses acting force on the air exhaust valve core 51 after the power off, the cylindrical part 61 of the air exhaust valve core 51 is restored to press the corresponding sealing ring 9 under the action of the air exhaust valve core reset spring 52, and the air path between the air inlet/outlet port 12 and the air outlet port 14 is closed, so as to prepare for the next inflation process.
Claims (7)
1. The utility model provides an external counterpulsation is with filling exhaust valve, includes valve body seat, aerifys electro-magnet, exhaust electro-magnet, its characterized in that:
the valve body seat is provided with a cavity, the valve body seat is also provided with an air inlet and outlet communicated with the cavity, the cavity of the valve body seat is fixedly provided with an air charging sleeve and an air discharging sleeve, and the air charging sleeve and the air discharging sleeve are respectively provided with a through hole which enables the inner cavity of the air charging sleeve to be communicated with the air inlet and outlet;
the valve body seat is provided with an inflation inlet which can only be communicated with the inner cavity of the inflation sleeve, and the valve body seat is also provided with an exhaust port which can only be communicated with the inner cavity of the exhaust sleeve;
an inflation valve core and an inflation valve core reset spring are installed in the inner cavity of the inflation sleeve, and the inflation valve core comprises a cylindrical barrel part and a transmission rod part which are connected together; an exhaust valve core and an exhaust valve core reset spring are arranged in the inner cavity of the exhaust sleeve; the exhaust valve core comprises a cylindrical barrel part and a transmission rod part which are connected together; the transmission rod part of the inflating valve core and the transmission rod part of the exhaust valve core extend out of the valve body seat; the inflation valve core can move relative to the inflation sleeve, and the cylindrical barrel part of the inflation valve core seals an air path from the inflation port to the air inlet and outlet; the exhaust valve core can move relative to the exhaust sleeve, and the cylindrical barrel part of the exhaust valve core seals a gas path from the gas inlet and outlet to the gas outlet;
the inflation electromagnet is arranged on the valve body seat and is connected with the transmission rod part of the inflation valve core;
the exhaust electromagnet is arranged on the valve body seat and is connected with the transmission rod part of the exhaust valve core;
the valve body seat comprises a cavity seat, an inflation end cover, an exhaust end cover, an inflation end connector and an exhaust end connector, wherein two upper cavity ports and two lower cavity ports are arranged on the cavity seat, and the air inlet and the air outlet are arranged on the cavity seat;
the two upper orifices of the cavity seat are respectively covered with the inflation end cover and the exhaust end cover, and the two lower orifices of the cavity seat are respectively provided with the inflation end connector and the exhaust end connector so as to form the cavity in the cavity seat;
the inflation sleeve is arranged between the inflation end cover and the inflation end connector, the transmission rod part of the inflation valve core penetrates through the inflation end cover to be connected with the inflation electromagnet, and the inflation port is arranged on the inflation end connector;
the exhaust sleeve is arranged between the exhaust end cover and the exhaust end connector, the transmission rod part of the exhaust valve core penetrates through the exhaust end cover to be connected with the exhaust electromagnet, and the exhaust port is arranged on the exhaust end connector;
the structural specifications of the inflation sleeve and the exhaust sleeve are the same, and the structural specifications of the inflation valve core and the exhaust valve core are the same;
the inflation end joint and the exhaust end joint are respectively provided with a buffer rubber pad, the inflation end joint and the exhaust end joint are also respectively provided with a spring sleeving part, the inner cavity walls of the cylindrical barrel part of the inflation valve core and the cylindrical barrel part of the exhaust valve core are respectively provided with a jacking convex ring, the inflation valve core reset spring is compressed between the jacking convex ring of the inflation valve core and the inflation end joint, and one end of the inflation valve core reset spring is sleeved on the spring sleeving part of the inflation end joint; the exhaust valve core return spring is compressed between the jacking convex ring of the exhaust valve core and the exhaust end connector, and one end of the exhaust valve core return spring is sleeved on the spring sleeving part of the exhaust end connector.
2. The inflation and deflation valve for external counterpulsation according to claim 1, wherein: a plastic bearing is installed in the inflation sleeve, a ring groove is arranged on the periphery of the cylindrical barrel part of the inflation valve core, and a sealing ring is installed in the ring groove; the air-filled sleeve and the air-filled valve core are sealed in an air-tight way through the plastic bearing and the sealing ring.
3. The gas charging and discharging valve for external counterpulsation according to claim 1, wherein: a plastic bearing is installed in the exhaust sleeve, a ring groove is arranged on the periphery of the cylindrical barrel part of the exhaust valve core, and a sealing ring is installed in the ring groove; the air seal is carried out between the exhaust sleeve and the exhaust valve core through the plastic bearing and the sealing ring.
4. The inflation and deflation valve for external counterpulsation according to claim 1, wherein: sealing rings are respectively arranged on the inner end surfaces of the inflation end cover and the exhaust end cover; the transmission rod part of the inflation valve core penetrates through the corresponding sealing ring and penetrates through the inflation end cover; and the transmission rod part of the exhaust valve core penetrates through the corresponding sealing ring and penetrates through the exhaust end cover.
5. The inflation and deflation valve for external counterpulsation according to claim 1, wherein: the inner wall of a through hole of the inflation end cover for the transmission rod part of the inflation valve core to pass through is provided with a sealing sleeve, and the transmission rod part of the inflation valve core is provided with a sealing ring which is matched with the sealing sleeve; the inner wall of a through hole of the exhaust end cover, through which the transmission rod part of the exhaust valve core passes, is also provided with a sealing sleeve, and the transmission rod part of the exhaust valve core is provided with a sealing ring which is matched with the sealing sleeve.
6. The inflation and deflation valve for external counterpulsation according to claim 1, wherein: aerify and be equipped with the fixed part on end cover, exhaust end cover, the end connector of aerifing, the exhaust end connector respectively, aerify end cover, exhaust end cover, aerify end connector, exhaust end connector respectively through the bolt fixed mounting who passes its fixed part on the chamber seat aerify end cover, exhaust end cover, aerify the end connector, be equipped with the sealing washer between exhaust end connector and the chamber seat respectively, aerify also be equipped with the sealing washer between sleeve and the end connector of aerifing, also be equipped with the sealing washer between exhaust sleeve and exhaust end connector.
7. The inflation and deflation valve for external counterpulsation according to claim 1, wherein: still include silencer mechanism, this silencer mechanism includes silencer barrel, threaded connection ring, low density sponge, mesh stainless steel net, stainless steel olive net, circlip installs in one of them nozzle of silencer barrel, threaded connection ring installs in another nozzle of silencer barrel, install according to the preface in the silencer barrel between threaded connection ring to the circlip low density sponge, mesh stainless steel net, stainless steel olive net, silencer mechanism passes through the threaded connection ring and connects on the gas vent of valve body seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710784510.6A CN107320844B (en) | 2017-09-05 | 2017-09-05 | Air charging and discharging valve for external counterpulsation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710784510.6A CN107320844B (en) | 2017-09-05 | 2017-09-05 | Air charging and discharging valve for external counterpulsation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107320844A CN107320844A (en) | 2017-11-07 |
| CN107320844B true CN107320844B (en) | 2023-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710784510.6A Active CN107320844B (en) | 2017-09-05 | 2017-09-05 | Air charging and discharging valve for external counterpulsation |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667962B (en) * | 2019-01-31 | 2020-08-21 | 广州市忆典医疗器械有限公司 | Special distributing valve for external counterpulsation device |
| CN109771244A (en) * | 2019-01-31 | 2019-05-21 | 广州市忆典医疗器械有限公司 | Novel external counterpulsation device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2420014Y (en) * | 2000-03-28 | 2001-02-21 | 毕素栋 | Drainage tube joint |
| CN201664472U (en) * | 2010-02-23 | 2010-12-08 | 上海应用技术学院 | Check valve |
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| CN107320844A (en) | 2017-11-07 |
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