CN102488961A

CN102488961A - Air charging and discharging valve special for external counterpulsation

Info

Publication number: CN102488961A
Application number: CN2011104180813A
Authority: CN
Inventors: 陈德行; 陈健; 谢学贵
Original assignee: BEIJING PREFERRED TECHNOLOGY CO LTD
Current assignee: BEIJING PREFERRED TECHNOLOGY CO LTD
Priority date: 2011-12-15
Filing date: 2011-12-15
Publication date: 2012-06-13
Anticipated expiration: 2031-12-15
Also published as: CN102488961B

Abstract

The invention discloses an air charging and discharging valve special for external counterpulsation, and belongs to the field of medical equipment. The valve comprises a valve body provided with an air inlet, an air charging port and an air discharging port, a valve seat fixed on the lower part of the valve body, an electromagnet arranged at the upper end of the valve body, an iron core arranged in the electromagnet, a valve core which can slide in the valve body, and a valve return spring, wherein the valve core consists of a core rod and an air inlet valve and an air discharging valve which are arranged on the core rod; the upper end of the core rod passes through the valve body, enters the electromagnet and is contacted with the iron core; a working cavity and an air discharging cavity are formed in the valve body; communication between the working cavity and the air discharging cavity is controlled by the air discharging valve; when the electromagnet is electrified, the valve core moves downwards under the action of the iron core, the air inlet valve is opened, and the air discharging valve is closed; and when the electromagnet is subjected to power failure, the valve core moves upwards under the action of the valve core return spring, the air inlet valve is closed, and the air discharging valve is opened. The valve is mainly used for the air charging and discharging of an air sac of an external counterpulsation machine.

Description

The special-purpose Air inflating and exhausting valve of ECP

Technical field

The invention belongs to medical instruments field, be specifically related to the special-purpose Air inflating and exhausting valve of a kind of ECP.

Background technology

The ECP Air inflating and exhausting valve is the crucial executive component on the external counterpulsation apparatus, and its effect is the inflation and the aerofluxus of control air bag, reaches orderly in external compressing and vasodilatory effect, thus the medical procedure of perfect aspect extracorporeal counterpulsation.

The Chinese utility model patent of the patent No.: ZL91215693.7 discloses a kind of ECP special service valve, there is problems such as quantity of gas leakage is big, aerofluxus is smooth, mechanicalness noise is big, installation inconvenience.

The patent No. is: the Chinese utility model patent of ZL200920127685.0 discloses the special-purpose Air inflating and exhausting valve of a kind of environment-friendly type ECP; Though it structurally makes certain improvements; Gas circuit is complicated, gas leaks problems such as serious, that noise is big but it exists; Can make air pressure instability in the treatment like this, aerofluxus is not smooth, and has reduced therapeutic effect.

Summary of the invention

The technical problem that the present invention will solve is that ECP Air inflating and exhausting valve of the prior art exists big, the not smooth problem of aerofluxus of quantity of gas leakage.

Technical scheme of the present invention is: the special-purpose Air inflating and exhausting valve of ECP, comprise have air inlet, the valve body of inflation inlet and air vent, be fixed on the valve seat of valve body lower portion; Be arranged on the electric magnet of valve body upper end and be arranged on the iron core in the electric magnet; Spool that can in valve body, slide and valve core reseting spring, said spool is made up of plug and the air intake valve, the drain tap that are arranged on the plug, and said plug upper end is passed valve body and is got in the electric magnet and with iron core and contact; Have working chamber and discharge chamber in the valve body; Switching between working chamber and the discharge chamber is controlled by drain tap, and when electric magnet was switched on, spool moved down under the effect of iron core; Air intake valve is opened, and drain tap is closed; When electric magnet cut off the power supply, spool moved under the effect of valve core reseting spring, and air intake valve is closed, and drain tap is opened.

Further, be provided with the cushion pad that cooperates with iron core in the said electric magnet.

Further, be provided with silencing pad in the said discharge chamber.

Further, said air intake valve is arranged on the air inlet outside.

Further, said drain tap is arranged on discharge chamber one side.

Further, said air intake valve and drain tap are dull and stereotyped valve.

Further, said air intake valve and drain tap are processed by polyurethane material.

Spool of the present invention is made up of plug and the air intake valve and the drain tap that are fixed on the plug, and air intake valve and drain tap interlock reach inflation (closing aerofluxus simultaneously) and aerofluxus (closing inflation simultaneously) during work, and structure is simplified greatly.

Have working chamber and discharge chamber in the valve body, simplified gas circuit, reduced gas leak phenomenon, increased capacity, reduced gas-flow resistance, the aerofluxus response is fast, does not have hysteresis when making air bags, no overbottom pressure phenomenon, and it is comfortable that patient feels, and therapeutic effect is remarkable.

Be provided with the cushion pad that cooperates with iron core in the electric magnet, be provided with the silencing pad that cooperates with the drain tap upper end in the valve body, the noise when greatly reducing work.

Through air intake valve and drain tap are improved, air intake valve and drain tap are processed by polyurethane material, because the polyurethane material softness is wear-resisting, have improved air-tightness, have prolonged service life simultaneously.

Compared with prior art, the present invention has following advantage:

1, there is not gas leakage, gas usage is declined to a great extent, guaranteed the stable of medical pressure on the one hand, can make the power of air pump descend about 30% simultaneously.

2, simplify the structure, reliable operation has been stopped fault basically, has prolonged service life.

3. airway unobstructed, valve is fast to the response of signal.

4, reduced noise, it is better to have improved medical environment.

Description of drawings

Fig. 1 is a structural representation of the present invention.

Reference numeral is respectively among the figure: 1 cushion pad, 2 iron cores, 3 electric magnet, 4 plugs, 6 silencing pads, 7 air vents, 8 drain taps, 9 air intake valves, 10 valve bodies, 11 valve core reseting springs, 13 valve seats, 14 air inlets.

The specific embodiment

Below in conjunction with accompanying drawing the present invention is done further explanation

Embodiment 1

As shown in Figure 1; The special-purpose Air inflating and exhausting valve of ECP; Comprise have air inlet 14, the valve body 10 of inflation inlet and air vent 7, be fixed on the valve seat 13 of valve body 10 bottoms, be arranged on the electric magnet 3 of valve body 10 upper ends and be arranged on the iron core 2 in the electric magnet 3; Iron core 2 can move up and down under the effect of electric magnet 3, the spool and the valve core reseting spring 11 that can in valve body 10, slide.Spool is made up of plug 4 and the air intake valve 9, the drain tap 8 that are arranged on the plug 4; Plug 4 upper ends are passed in the valve body 10 entering electric magnet 3 and with iron core 2 and are contacted, and have working chamber and discharge chamber in the valve body 10, and the switching between working chamber and the discharge chamber is by drain tap control 8; When electric magnet 3 energisings; Spool moves down under the effect of iron core 2, and air intake valve 9 is opened, and drain tap 8 is closed; When electric magnet 3 outages, spool moves under the effect of valve core reseting spring 11, and air intake valve 9 is closed, and drain tap 8 is opened.

When electric magnet 3 outage, spool can reset rapidly under the effect of valve core reseting spring 11, and iron core 2 moves and electric magnet 3 collisions on rapidly simultaneously, and the generation mechanicalness noise in order to reduce noise, is provided with the cushion pad 1 that cooperates with iron core 2 in electric magnet 3.

When aerofluxus, because flowing rapidly of gas can produce noise in the discharge chamber, therefore, silencing pad 6 is installed in discharge chamber, silencing pad 6 adopts the Polymer Synthesizing fleece to process.Reach more than 90% because the volume of silencing pad 6 is compressible, can effectively absorb exhaust noise.

Air intake valve 9 and the dull and stereotyped valve that drain tap 8 all adopts polyurethane material to process are fixed on air intake valve 9 on the plug 4 in air inlet 14 outsides through nut, drain tap 8 are fixed on the plug 4 of air vent 7 one sides.

Embodiment 2

Present embodiment and embodiment 1 are basic identical, just plug 4 are foreshortened in the valve body 10, and replace stretching among the embodiment 1 one section plug 4 in the electric magnet by a push rod, thereby reach the effect of transmitting iron core 2 downforce.

Claims

1. the special-purpose Air inflating and exhausting valve of ECP, comprise have air inlet, the valve body of inflation inlet and air vent, be fixed on the valve seat of valve body lower portion; Be arranged on the electric magnet of valve body upper end and be arranged on the iron core in the electric magnet; Spool that can in valve body, slide and valve core reseting spring is characterized in that: said spool is made up of plug and the air intake valve, the drain tap that are arranged on the plug, and said plug upper end is passed valve body and got in the electric magnet and with iron core and contact; Have working chamber and discharge chamber in the valve body; Switching between working chamber and the discharge chamber is controlled by drain tap, and when electric magnet was switched on, spool moved down under the effect of iron core; Air intake valve is opened, and drain tap is closed; When electric magnet cut off the power supply, spool moved under the effect of valve core reseting spring, and air intake valve is closed, and drain tap is opened.

2. the special-purpose Air inflating and exhausting valve of ECP according to claim 1 is characterized in that: be provided with the cushion pad that cooperates with iron core in the said electric magnet.

3. the special-purpose Air inflating and exhausting valve of ECP according to claim 1 is characterized in that: be provided with silencing pad in the said discharge chamber.

4. the special-purpose Air inflating and exhausting valve of ECP according to claim 1 is characterized in that: said air intake valve is arranged on the air inlet outside.

5. the special-purpose Air inflating and exhausting valve of ECP according to claim 1, it is characterized in that: said drain tap is arranged on discharge chamber one side.

6. according to the special-purpose Air inflating and exhausting valve of each described ECP of claim 1～5, it is characterized in that: said air intake valve and drain tap are dull and stereotyped valve.

7. the special-purpose Air inflating and exhausting valve of ECP according to claim 6, it is characterized in that: said air intake valve and drain tap are processed by polyurethane material.