CN201121571Y - Small air pump for medical use - Google Patents

Abstract

A small medical air pump comprises a motor assembly; a kinetic energy transfer member; a compression section; a gas collection part. Wherein the eccentric wheel of the kinetic energy transmission part is inserted with a driving shaft, the eccentric wheel drives the piston to make a circumferential rotation by the rotation of the motor shaft, so that the compression part sends gas to the gas collection part because the piston presses the airbag. And is ejected from the air outlet nozzle of the air collection portion. It is characterized in that the inlet valve and the outlet valve of the gas collecting part adopt an umbrella structure; a rolling bearing is arranged in the piston of the kinetic energy transmission part; the air pump structure is more stable when making gas compression, and gas diversion is more smooth and easy with giving vent to anger, and the noise is lower when the pump operation, and the life of pump is longer.

Description

Small air pump for medical use

technical field

The present invention relates to an air pump, in particular to a new improved air pump whose gas diversion structure and kinetic energy transmission structure have been changed.

Background technique

The problem with the air pumps widely used in the market in the past is that because of the use of an output valve (soft rubber valve sleeve), when the air flow is output, the wall of the rubber sleeve collides with the wall of the air outlet hole of the upper cover to generate noise; due to the limitation of the air outlet position , so that the air outlet is not smooth, and there is gas backflow, resulting in low efficiency of the air pump. Another big disadvantage is that the design of the kinetic energy transmission part is not ideal, so that there is more energy loss in the transmission process, and the friction is relatively large, which reduces the life of the air pump.

With the continuous progress of society and the improvement of living standards, the shortcomings derived from the above-mentioned air pumps are becoming more and more obvious. In view of the shortcomings of the above-mentioned air pumps, the designer of this new model has finally successfully developed it after years of thinking and painstaking research. The new improved air pump.

Utility model content

The purpose of the utility model is to provide an air pump, which can make the gas output more stable and smooth by changing the air outlet structure of the air pump.

Another object of the present utility model is to provide an air pump, which can evenly eject the gas from the inside of the air pump through the gas output hole, and can prevent the gas from leaking back, blocking the reverse flow of gas from the flow channel, and does not use exhaust gas. Air soft rubber valve, which can reduce the collision between the air outlet soft rubber valve and the air outlet, and reduce the noise of the air pump very well.

Another purpose of the utility model is to provide an air pump, which can meet the needs of actual use and can be shaped in various sizes and shapes.

Another object of the present utility model is to provide an air pump whose gas collecting structure can store the compressed gas in a single air outlet valve chamber, which can prevent the air pump from leaking, shorten the pumping time, and reduce time waste, thereby improving the efficiency of the pumping process. efficiency.

Another main purpose of the utility model is to provide an air pump, whose brand-new kinetic energy transmission structure can make the kinetic energy transmission more stable, and reduce the friction between the rotating shaft and the piston, improve the service life of the air pump, increase the useful power of the motor, Improve air pump efficiency.

In order to achieve the above object, the utility model provides an air pump, including: a motor assembly, a kinetic energy transmission part, a compression part and an air collection part, characterized in that: the motor in the motor assembly passes through the motor shaft and the kinetic energy transmission part The eccentric wheel is connected with the eccentric wheel, and the eccentric wheel is connected with the bearing press-fitted in the piston through the transmission shaft to connect the piston with the rotating motor shaft; the rubber cap of the compression part passes through the pump body and the piston on the piston through the fixed bayonet at the rear of the air bag. The card slots are engaged with each other; in the gas collection part, a plurality of umbrella check valves are respectively combined with the air inlet and outlet holes of the pump cover in opposite directions to form a suction valve and an output valve through the fixed bayonets at the rear. The noise cover and the pump cover are welded into a connected body by ultrasonic welding, and two air storage chambers are formed through the partition.

In the air pump of the above-mentioned utility model, there are two or more output valves and suction valves, and their mutual angles and configuration balance are equal.

In the air pump of the above utility model, its exterior structure can be selected in different shapes according to the needs of the environment.

In the air pump of the above-mentioned utility model, the shapes of its two air storage chambers are independent, and their volumes are variable.

In the air pump of the above-mentioned utility model, an air outlet nozzle and an air inlet nozzle are arranged on the noise cover, and an air filter part can be installed on the inlet nozzle.

In the air pump of the above-mentioned utility model, the middle pressure of its piston is equipped with a bearing.

The effect of the utility model is: because the utility model is combined, it can match the size and shape of the actual space and become various shapes to meet the requirements of the external environment. In the gas chamber formed in the gas collecting part of the utility model, the gas is inhaled and compressed through the suction valve, and then output to the gas storage chamber through the output valve, and then evenly sprayed out through the gas output hole, but the special design of the suction valve and the output valve can Prevent gas leakage and backflow, thereby improving its efficacy.

The special design of the output part of the utility model reduces the noise-generating design structure, thereby reducing the noise well, improving the performance of the air pump, and adding a noise cover, and an air filter can be added at the air inlet according to needs, so as to Ensure the gas quality in the compression chamber.

Another effect of the utility model is that a new bearing is added to the kinetic energy transmission part, so that the transmission shaft is more closely connected to the piston, and the movement is more stable, so that the kinetic energy can be better transmitted to the compression part, and because the friction is reduced, thus The kinetic energy loss can be reduced, and the service life of the piston can be increased, thereby improving the service life of the air pump.

Description of drawings:

Please refer to the following detailed description of a preferred embodiment of the present invention and accompanying drawings to further understand the technical contents and effects of the present invention.

in:

Fig. 1 is the exploded perspective view of the main body of the utility model air pump;

Fig. 2 is a schematic diagram of the combined structure of the improved kinetic energy transmission part of the air pump;

Fig. 3 is the schematic diagram of the combination of the improved gas collection part of the air pump;

Fig. 4 is a schematic diagram of the welding situation of the pump cover and the noise cover of the air pump;

Figure 5 is an explanatory diagram of the air pump's improved suction and discharge actions.

Main part reference signs:

10 motor assembly

101 motor body

102 motor screw holes

103 motor shaft

20 Kinetic Energy Transmission Department

201 fixed base

202 screw holes

203 screw

204 eccentric wheel

205 transmission shaft

206 bearings

207 piston

2071 piston card slot

30 Compression Department

301 pump body

302 rubber cap

3021 Airbag

3022 compression chamber

3023 fixed tenon

40 Gathering Department

401 umbrella check valve

4011 fixed tenon

402 pump cover

4021 output hole

4022 Gas storage compartment partition

4023 suction hole

4024 suction air storage chamber

4025 outlet air storage chamber

403 Umbrella Check Valve

404 noise cover

4041 intake nozzle

4042 outlet nozzle

50 lock screw

specific embodiment

As shown in Figure 1, the utility model is an air pump with a cylindrical shape, which is mainly composed of a motor assembly 10, a kinetic energy transmission part 20, a compression part 30, and an air collection part 40, and is combined with a locking screw 50. fixed.

The motor assembly 10 consists of a DC motor.

The motor assembly 10 and the kinetic energy transmission part 20 are connected by screws 203, that is, the screws 203 pass through the two bottom holes of the fixed base 201 and connect at the motor screw hole 102, so that the fixed base 201 is fixed on the motor body 101, and after the connection is pressed into the belt The eccentric wheel 204 of the transmission shaft 205 is inserted into the hole of the bearing 206 press-fitted in the piston 207 at an offset angle, so that the kinetic energy of the motor can be transmitted to the compression part 30 through this structure.

The kinetic energy transmission part 20 includes a fixed base 201 and a rotating part, wherein the rotating part includes an eccentric wheel 204 , a transmission shaft 205 , a bearing 206 and a piston 207 .

The compression part 30 includes a pump body 301 and a rubber cap 302, wherein the rubber cap is composed of an air bag 3021, a compression chamber 3022 and a fixed tenon 3023. When connected, the fixed tenon 3023 behind the air bag 3021 is engaged with the piston slot 2071, and the piston 207 It is trilobate, and the deviation between each blade is a fixed angle.

As shown in Figure 2, the transmission shaft 205 is connected to the piston 207 through the bearing 206, so as to avoid wear and tear of the transmission shaft 205 during operation and consume kinetic energy, thereby improving the efficiency of kinetic energy transmission, improving the service life of the air pump, and running smoothly, the generated compressed gas uniform.

Please refer to FIGS. 1 , 3 and 4 at the same time. The gas collection part 40 includes an umbrella check valve 401 , a pump cover 402 , an umbrella check valve 403 and a noise cover 404 . Wherein, the fixed tenon 4011 behind the umbrella check valve 401 snaps into the suction hole 4023 to form a suction valve. The fixed tenon 4031 behind the umbrella check valve 403 is inserted into the output hole 4021 to form an output valve. The pump cover 402 and the noise cover 404 are ultrasonically welded to form air-intake and air-out air chambers 4024 and 4025 separated by an air chamber partition 4022 . According to actual needs, an air filter part (not shown) can be installed at the air inlet nozzle 4041 to ensure the quality of the filtered air.

In Fig. 5, an action of inhaling and exhaling is taken as an example for illustration. When the gas enters the intake air storage chamber 4024 from the intake nozzle 4041, due to the negative air pressure inside the airbag, the umbrella check valve 401 opens, and the umbrella check valve 403 closes to complete the suction action; with the operation of the airbag, The internal pressure then changes to positive air pressure, the suction valve is closed, the output valve is opened, and the air outlet action is completed. Since the umbrella-shaped check valves 401 and 403 adopt a one-way valve principle, gas backflow is avoided and pumping efficiency is improved. Since the umbrella check valve 403 does not collide with the pump cover 402 when the air is discharged, the noise of the air pump is reduced. Since the gas flows through the gas storage chamber 4025 after the gas is discharged, the gas output is more uniform and stable.

When the motor assembly 10 is running, the eccentric wheel 204 coupled thereto will rotate accordingly, so that the transmission shaft 205 will rotate accordingly, and the transmission shaft 205 will be rotated by the eccentric wheel 204 to make the blades of the piston 207 swing, and the piston will continue to press the air bag 3021 , the air bag 3021 constantly and regularly compresses the compression chamber 3022 , and then generates gas and sends it to the gas collection part 40 . And while the piston continues to press the air bag 3021, the suction valve is tightly closed by the internal air pressure. The output valve is opened by the thrust of the gas inside the airbag. When the airbag 3021 is reset, the suction valve is opened, and the gas in the intake air storage chamber 4024 is sucked into the airbag 3021 through the suction valve, while the output valve is activated by the negative air pressure inside the airbag. Close tightly. Such continuous reciprocating movement causes the gas inside the airbag 3021 to be uniformly delivered to the outlet gas storage chamber 4024 through the output valve due to the continuous extrusion of the airbag, and then evenly ejected from the gas output hole 4021 .

The improved parts of the utility model are locked by screws, so that the connection of each part is more convenient and reliable. The air collecting part 40, the compressing part 30, and the kinetic energy transmission part 20 are connected by screws 50, so that the position of each part is relatively more stable and the connection is more compact.

In addition to the above advantages, the utility model has:

1. The shape and volume can be adapted to local conditions.

2. The volume of the air storage chamber can be designed according to the needs.

3. The use of the noise cover and the output valve can ensure the compression of the gas and reduce the noise of the air pump, and improve the range of use of the air pump.

The above detailed description is a specific description of one of the feasible preferred examples of the utility model, but this example is not intended to limit the patent protection scope of the utility model.

Claims (7)

1. air pump comprises: motor sub-assembly, and the kinetic energy transfer part, press part and gas collection portion is characterized in that:

Motor in the described motor sub-assembly is connected with eccentric wheel in the described kinetic energy transfer part by motor drive shaft, and eccentric wheel is connected with bearing in pressing fit over piston by transmission shaft is connected the motor drive shaft of piston and rotation;

The fixedly trip of the Capsule of described press part by the air bag rear passes the pump housing and engages mutually with draw-in groove on the piston;

In the described gas collection portion, a plurality of umbrella shape safety check are combined to form suction valve and delivery valve with the inlet hole and the air outlet hole of pump cover with opposite direction respectively by the fixedly trip at rear separately, noise lid and pump cover are connected into a connecting body by ultrasonic welding, form two air-storage chambers by dividing plate.

2. air pump according to claim 1 is characterized in that the quantity of described delivery valve, suction valve is two or more, its angle and configuration balance equalization each other.

3. air pump according to claim 1 is characterized in that its appearance structure is selected different shapes for use according to the environment needs.

4. air pump according to claim 1 is characterized in that the shape of described two air-storage chambers is independently, its variable volume.

5. air pump according to claim 1 is characterized in that, described noise covers and is provided with an outlet nozzle and air inlet nozzle.

6. air pump according to claim 5 is characterized in that, installs the air-filtering part on the described air inlet nozzle additional.

7. air pump according to claim 1 is characterized in that, has been press-fitted a bearing in the described piston.

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