CN2630520Y - Membrane oil-free low-noise negative pressure pump - Google Patents

Abstract

The utility model relates to a diaphragm-type oil-free and low noise suction pressure pump, which makes the compression working diaphragm do advance and return movement through driving the eccentric wheel and the connecting rod by single-phase motor to form the suction pressure and take in the air at the inlet cavity by controlling the air inlet and the outlet valve, or the air is compressed and discharges in the air-out cavity to achieve the function of taking in and discharging air. The suction pressure pump is reliable and durable, has high efficiency, oil-less and low noise, and can not only adapt to the environment with higher-pressure, but also prevent the sealed diaphragm of the air intake and out-air valve from deviating and blocking the valve opening. Compared with the traditional products of the similar category, the utility model also has such cost-effective advantages as manufacturing being simple, low assembling requirement. Therefore, the utility model is especially suitable for hairdresser equipment and medical apparatus.

Description

A kind of diaphragm type does not have oily low noise negative pressure pump

The utility model relates to the air pump in medical beauty treatment instrument field, particularly a kind of suitable low pressure that mainly is made of materials such as plastics, rubber, the pump housing of clean gas flow suction workplace.

The present similar air pump that uses, substantially as shown in Figure 2,1 is the back pump housing, 2 is the preceding pump housing, and 3 is sealing gasket, and 4 is suction valve seal membrane spring pressuring ring, 5 is the suction valve seal membrane, and 6 is suction port, and 7 is relief opening, 8 is outlet valve seal membrane spring pressuring ring, 9 is the outlet valve seal membrane, and 10 are the work elastomer diaphragm of calming the anger, and 11 is compress gasket, 12 is housing screw, and 13 is connecting rod.Electric machine support is fixed on the work elastomer diaphragm 10 of calming the anger in the active chamber into the preceding pump housing 2, driven by motor eccentric wheel, connecting rod 13, make work elastomer diaphragm 10 to-and-fro motion of calming the anger, alternately form pull of vacuum this moment in the active chamber and produce air compression, when forming pull of vacuum, air is entered by suction port 7, boosts the suction valve seal membrane and enters in the active chamber, and the outlet valve seal membrane is under negative pressure condition simultaneously, air release valve hole is blocked, finished a breathing process; Otherwise the air of inspiration is discharged by compression in the active chamber, and the suction valve seal membrane is under pressure and inlet valve hole is blocked, and air pressure boosts the outlet valve seal membrane, and air is discharged, and finishes an exhaust process.

Above-mentioned as accompanying drawing 2 this traditional air pumps especially for beauty treatment instrument, mainly be used for the soil pick-up dirt, after using certain hour, dirt can stop up inlet valve hole usually, makes air pump lose efficacy.And this pump is when work, because when inlet and outlet valve rubber diaphragm 5,9 is pressed tightly slightly at spring pressuring ring 4,7, inlet and outlet valve seal diaphragm just can not be worked, pine then is easy to an inlet and outlet valve seal diaphragm and too picks up or blow afloat and cause and can not reset slightly, and making air pump lose efficacy, this situation especially occurs easily at the higher Shi Hougeng of air pressure.The elastomer diaphragm of calming the anger of traditional air pump is a plane in addition, pressure bearing power a little less than.In addition, the inlet and outlet mouth is in the structural type of the different front and back of air pump two pump housings 1,2, causes assembly precision requirement and manufacture cost height, is unfavorable for producing in enormous quantities.

In order to have overcome the deficiency of above-mentioned traditional air pump, the utility model provides a kind of novel pump body structure.

As Fig. 1, novel pump body structure is buckled 2,3 rivetings of inlet and outlet valve seal diaphragm with the rivet form and is fixed on the pump housing, gas process inlet and outlet pod apertures 4,5 o'clock, because the riveting button form of novel seal diaphragm, guarantee that seal membrane all do not affirm and can get loose or be shifted being blown open (unlatching) or suck in the process of (closing).Fundamentally solved the phenomenon that inlet and outlet valve seal diaphragm gets loose at work easily.

As Fig. 3, an end face of the elastomer diaphragm of calming the anger of new pump body structure has " recessed " Crucible type that cooperates with connecting rod, has strengthened the intensity of the elastomer diaphragm of calming the anger so greatly, experimental results show that the novel air pressing elastomer diaphragm can improve 0.01Mpa to pressure index.

As Fig. 1, the inlet and outlet mouth of new pump body structure is in the same pump housing of air pump, has reduced manufacture cost and has reduced matching requirements, favourable batch process.Sound absorbing material 14,15 filters to place in two airflow chamber that inlet and outlet valve separated place is designed to certain space, dirt when air pump is worked is isolated, filtering gas stops up with preventing, and simultaneously the airflow noise of pump housing inner chamber is reduced, and reaches to reduce noise purpose (Fig. 3, Fig. 4).

The utility model structure is as shown in Figure 1: 1. the pump housing; 2. air inlet seal membrane; 3. exhaust sealing diaphragm; 4. air inlet pod apertures; 5. exhaust pod apertures; 6. gasket seal; 7. bonnet; 8. suction port; 9. relief opening; 10. the elastomer diaphragm of calming the anger; 11. pad; 12. clamping screw; 13. connecting rod; 14/15. filtration sound absorbing material.

Introduce working principle of the present utility model below in conjunction with accompanying drawing 1.

The driven by motor eccentric wheel, drive elastomer diaphragm 10 move left and right of calming the anger by connecting rod 13, the elastomer diaphragm of calming the anger is fixed on the pump housing 1 by frame, and when calming the anger elastomer diaphragm when moving right, pump housing inner chamber forms vacuum, relief opening 9 is closed under suction force state, dirt gas is entered by suction port 8, and after filtering sound absorbing material 14, cleaned air passes through air inlet pod apertures 4 again, seal membrane 2 outer rims are blown open, enter pump housing inner chamber.When connecting rod when moving left, calm the anger elastomer diaphragm pump housing inner chamber gas pressurized, seal membrane 2 is blocked air inlet pod apertures 4 under pressure, and gas blows seal membrane 3 outer rims open through other exhaust pod apertures 5, after filtering sound absorbing material 15, discharge clean gas by relief opening 9.

Claims (3)

1. a diaphragm type does not have oily low noise negative pressure pump, drive eccentric wheel, link motion by single phase motor, the pump housing is made up of the elastomer diaphragm of calming the anger, end cap, Sealing, air inlet/outlet, air valve, filtration sound absorbing material etc., it is characterized in that: into and out of the seal membrane of air valve is that the riveting of rivet shape is buckled and is fixed on the pump housing; At least one end face of elastomer diaphragm of calming the anger in the pump chamber is recessed crucible shape design and cooperates with connecting rod.

2. according to claim 1 described air pump body, it is characterized in that air inlet, air outlet are in the same pump housing, and be separated to form two airflow chamber.

3. according to claim 2 described air inlets, the airflow chamber of giving vent to anger, it is characterized in that sound absorbing material is filtered in the difference filling in two airflow chamber.

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