CN2157772Y - Pressure generator for positive & negative pressure extremity therapeutic equipment - Google Patents

Abstract

The utility model relates to a pressure generator for positive & negative pressure extremity therapeutic equipment, which comprises an autocontrol barometer that is fixed on the wall of a therapeutic cabin and an adjustable air valve that cooperates with the autocontrol barometer. The air valve is arranged in the valve body with air holes, an inner cavity with a threaded end, a flank of outside threads, and combined air holes to screw-plug the inner cavity. The screw-plug is provided with a damping core with pin holes to block the air holes with the terminal of the damping core. A valve core and a spring are fixed in the combined air holes, and a screw cap oppresses the valve core. The pressure generator for positive & negative pressure extremity therapeutic equipment can change positive and negative air pressure alternatively in a sawtooth-shaped curve in the therapeutic cabin to have the function similar to that of massage. The range of application of the therapeutic equipment can be enlarged. The pressure generator for positive & negative pressure extremity therapeutic equipment is convenient, reliable and effective to change the pressure and adjust the frequency.

Description

Pressure generator for positive & negative pressure extremity therapeutic equipment

This utility model relates to a kind of air pressure generating means for the use of positive and negative air-pressure therapeutic instrument.

Current in the physical therapy rehabilitation appliances, a kind of positive and negative air-pressure limbs therapeutic instrument that is called is arranged.Its mechanism be ill limbs under positive pressure, can promote vein and lymph fluid to reflux; Drops in suction function undertissue, different height is pressed in the saturating chamber of blood vessel, causes vasodilation, has overcome the vascular smooth muscle contraction, the sustainable expansion of tremulous pulse, capillary bed is open, and histiocyte is able to the adequate blood perfusion; Positive negative pressure alternating action can make the increase of limbs blood, circulation improve and enhance metabolism.The known air pressure generating means that is used for this therapeutic instrument, be by air pump, electromagnetic valve, antivibrator, acoustic filter, air filter etc., behind pipeline connection, in treatment storehouse and envelope storehouse air bag, carry positive and negative alternative air pressure, its storehouse internal gas pressure curve is positive and negative trapezoidal.The weak point of this device is: the air pressure no change in the storehouse behind the alternation is that the base of said step curve is straight shape, causes applied therapeutic instrument that the curative effect of indication is restricted.

The purpose of this utility model is the air pressure generating means that a kind of improved positive and negative air-pressure limbs therapeutic instrument will be provided, and it can improve the air pressure conversion behind the alternation effectively, to improve the function of utilizing of air pressure.

The purpose of this utility model is achieved in that air pump, electromagnetic valve, antivibrator, acoustic filter and the air filter etc. that are equipped with in the bin, after the organic connection of pipeline, carries positive and negative alternative air pressure in treatment storehouse and envelope storehouse air bag.But the treatment bulkhead also is equipped with autocontrol air gauge and one and matches with air gauge and can make the Air-regulating valves of the step curve air pressure on the positive and negative sawtooth of formation base in the storehouse.This valve is at the inner chamber, the outer silk flange that are shaped on pore, band silk mouthful and makes up in the valve body of pore, pore is being blocked up in termination with the damping conductor of the band pin hole that is equipped with on plug shutoff inner chamber and the plug, in the combination pore spring and the spool that can regulate tolerance is housed, spool is subjected to the compressing of spiral cover.

The advantage of utility model: the air pressure in the treatment storehouse behind positive and negative alternation indention again changes, and ill limbs are had similar massage function, has enlarged the range of application of therapeutic instrument; The air pressure change frequency is easy to adjust, effectively reliable.

Description of drawings:

Fig. 1 is a kind of main cutaway view of air pressure generating means (but failing to illustrate autocontrol air gauge 12 Air-regulating valves 13 parts for the treatment of storehouse 14 and bulkhead installation) of positive and negative air-pressure limbs therapeutic instrument;

Fig. 2 is the gas circuit principle block diagram of this device;

But Fig. 3 is the installation and the cutaway view of Air-regulating valves;

Fig. 4 is a treatment storehouse internal gas pressure curve chart.

Below in conjunction with details and the working condition of Fig. 1-4 detailed description according to the concrete device that the utility model proposes.

It is on the dividing plate 9 of ㄇ shape that this device comprises in the bin 2 in the transverse section, and electromagnetic valve 3,5,7,8 and 10 is housed, and sidewall is installed acoustic filter 1 and the air filter 11 that exposes, and the below is with elastic support lifting air pump 6.Under the dividing plate with pipeline to all connected loop after, the positive and negative alternative air pressure of conveying in treatment storehouse 14 and envelope storehouse air bag 15.But the treatment bulkhead also is equipped with autocontrol air gauge 12 and an Air-regulating valves 13.

Shown in Fig. 2,3, an end of air pump 6 is provided with two branch roads that are connected, and a branch road is to be communicated with air filter 11 through electromagnetic valve 10, and the air that advances pump is filtered, and another branch road is to be communicated with treatment storehouse 14 through electromagnetic valve 8.Conventional treatment storehouse is the post housing at the bottom of the band that surrounds with lucite, and Hatch Opening is shaped on the envelope storehouse air bag 15 for the flexible glue film of using in the gas-tight silo.The other end of air pump two branch roads also in parallel, wherein first branch road is communicated with acoustic filters 1 through electromagnetic valve 3, to the processing of eliminating the noise of air pump air discharged.Second branch road is divided into two branches again, article one, branch is communicated with envelope storehouse air bag 15 through electromagnetic valve 7, direct-reading air gauge and adjustable (row) air valve 13a also are housed in this gas circuit simultaneously, and antivibrator 4 and the electromagnetic valve 5 of another branch through being intended to buffer gas flow is communicated with treatment storehouse 14.But the treatment bulkhead also is equipped with the autocontrol air gauge 12 and an Air-regulating valves 13 that can show the positive and negative value of air pressure respectively.

But the structure of Air-regulating valves (Fig. 3), it is the hollow inverted T-shaped valve body of casting with metal 16, one end of its part is shaped on joint, for being communicated with in the treatment storehouse with the flexible pipe sealing, this end of system joint is shaped on pore in the valve body, the inner chamber that is shaped on band silk mouth that connects on the direction of axis line same with it is to be shaped on protruding plug 18 and the sealing ring shutoff inner chamber of end face breast.Adorn one on plug newborn protruding and run through inner chamber and blocking up the damping conductor 17 in valve body device hole with the termination, this core is made end socket post hull shape with rubber, and end socket respectively is shaped on a pin hole in valve body pore scope He on the perisporium.Another part of valve body is shaped on the flange and the combination pore of band male thread, and the combination pore is meant slightly larger in diameter and smaller ladder circular hole, and the joint is the conical bore section, connects near the cross-drilled hole of intersection great circle hole wall and the inner chamber of small sircle hole and valve body.In the big hole of combination pore, a spool 20 and a helical compression formula spring that is shaped on the circular cone termination that is complementary with the conical bore section is housed.The flange of valve body is being oppressed spool and is being covered the spiral cover 19 that mouth has spacing jump ring with screwed connection.After if pore enters air-flow, enter in the damping conductor through the pin hole of damping conductor end socket, in the pin hole of damping conductor perisporium entered body cavity core outside, the order according to the small sircle hole, conical bore section, big hole and the cross-drilled hole that make up pore drained into outside the valve body at last again.According to described opposite flow process, can flow through air-flow equally.Be not difficult to find out that so the gap direct relation between the circular cone termination of spool and the said conical bore section the throughflow of gas, and this gap can be selected by screwing spiral cover.

After working condition, sick limb put in the treatment storehouse, opens solenoid valve 7 and 10 was closed electromagnetic valve 3,5 and 8.Start air pump 6, outside air is carried on the occasion of air pressure to sealing storehouse air bag 15 through electromagnetic valve 7 after air filter 11 and electromagnetic valve 10 enter air pump and boost.Observe from air gauge, 13a regulates with adjustable (row) air valve, closes electromagnetic valve 7 to suitable atmospheric pressure value, while opens solenoid valve 5, malleation value air-flow be delivered in the treatment storehouse, but autocontrol has been selected on the occasion of air gauge 12 and Air-regulating valves 13 through antivibrator 4 and electromagnetic valve 5.After this, although but Air-regulating valves has small amount of exhaust gas since the general flow of air pump be the 20-24 liter/minute, air pressure is 20KPa, so the malleation value still can raise gradually in the storehouse in, close gradually the giving of barometric display pointer chosen limit, gives termination of pumping when choosing limit value when rising to.,, reduce to and give that air pump starts when selecting lower limit, so the variation of storehouse internal gas pressure has just formed first sawtooth curve shown in Figure 4 so the malleation value can descend in the storehouse because but Air-regulating valves is still in small amount of exhaust gas.The rest may be inferred, can form a plurality of continuous sawtooth.Behind the certain hour, close electromagnetic valve 5 and 10, opens solenoid valve 3 and 8, after air pump rotated, the air in the treatment storehouse entered air pump through electromagnetic valve 8, and through electromagnetic valve 3 and acoustic filter 1 discharging.After the internal gas pressure null value of storehouse, but Air-regulating valves begins a small amount of air inlet, in like manner can occur negative value air pressure in the storehouse and increase gradually, show and control with another autocontrol negative value air gauge 12, give and choose termination of pumping in limited time when increasing to air gauge, but Air-regulating valves still in a small amount of air inlet, then negative value air pressure can descend in the storehouse, reduce to and give that air pump starts when selecting lower limit, so the variation of storehouse internal gas pressure just forms first sawtooth curve of negative territory among the figure.The rest may be inferred, can form a plurality of continuous sawtooth.Behind the certain hour, opens solenoid valve 5 and 10 is closed electromagnetic valve 3 and 8 again, and air pump is carried aforementioned like that on the occasion of air pressure in the treatment storehouse again, then is transformed into negative value air pressure again.Like this checker whole course of treatment.Turn-off air pump, open adjustable (row) air valve 13a, take out the disease limb and get final product.But be noted that at last by regulating the throughflow of Air-regulating valves 13, just can adjust the change frequency of sawtooth waveforms.

Claims (1)

1, a kind of air pressure generating means of positive and negative air-pressure limbs therapeutic instrument, be that air pump (6), electromagnetic valve, antivibrator (4), acoustic filter (1) and air filter (11) etc. are housed in bin (2), after the organic connection of pipeline, in treatment storehouse (14) and envelope storehouse air bag (15), carry positive and negative alternately air pressure composition, it is characterized in that treating bulkhead also is equipped with autocontrol air gauge (12) but and one match with air gauge and can make the Air-regulating valves (13) of the step curve air pressure on the positive and negative sawtooth of formation base in the storehouse; This valve is at the inner chamber, the outer silk flange that are shaped on pore, band silk mouthful and makes up in the valve body (16) of pore, pore is being blocked up in termination with the damping conductor (17) of the band pin hole that is equipped with on plug (18) shutoff inner chamber and the plug, in the combination pore spring and the spool (20) that can regulate tolerance is housed, spool is subjected to the compressing of spiral cover (19).

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