An air pump

Abstract

The utility model discloses a kind of air pumps, including sequentially assembled driving part, fixed seat, membrane seat, valve seat and pump cover, gas outlet passage is provided on pump cover, gas outlet cavity and air inlet cavity are provided between valve seat and pump cover, the edge between membrane seat and valve seat is provided with air inlet gap, membrane seat is installed with the diaphragm of driving connection with driving part, gas supply cavity is provided between diaphragm and valve seat, air inlet gap, air inlet cavity, gas supply cavity, gas outlet cavity, gas outlet passage sequentially communicate along gas outlet direction, first check valve is provided on the valve seat between air inlet cavity and gas supply cavity, second check valve is provided on the valve seat between gas outlet cavity and gas supply cavity.The utility model makes when first check valve and second check valve occur ageing damage, water flow in gas outlet pipe can sequentially pass through gas outlet passage, gas outlet cavity, gas supply cavity, air inlet return and finally discharge to air pump exterior through air inlet gap, water flow does not pass through the inside of membrane seat, fixed seat and driving part, prolongs the service life of air pump.

Description

Technical Field

[0001] This utility model relates to the field of air pump technology, and specifically to an air pump. Background Technology

[0002] A diaphragm air pump uses a specially designed and manufactured flexible diaphragm to replace the piston, achieving reciprocating motion under the action of a drive mechanism to complete the intake and exhaust process. Diaphragm air pumps can be widely used in industries and scientific and technological sectors such as petroleum, chemical, textile, food, papermaking, nuclear energy technology, power plants, plastics, pharmaceuticals, water plants, and environmental protection.

[0003] The existing diaphragm air pump includes a drive unit and a pump body mounted on the drive unit. The pump body's interior, from bottom to top, has sequentially connected air inlet slits, air inlet chambers, air delivery chambers, air outlet chambers, and air outlet channels. The pump body includes a fixed base, a diaphragm seat, a valve seat, and a pump cover assembled in sequence. The air inlet slit is located between the fixed base and the drive unit and communicates with external air. The air inlet chamber is located between the fixed base and the diaphragm seat. The air delivery chamber is located between the diaphragm on the diaphragm seat and the valve seat. The air outlet chamber is located between the valve seat and the pump cover. The air outlet channel is located on the pump cover. A channel is provided between the air delivery chamber and the air outlet chamber for air to exit from the air delivery chamber to the air outlet chamber. The one-way valve's air intake path sequentially passes through the air intake gap, air intake chamber, air delivery chamber, air outlet chamber, and air outlet channel before entering the air outlet pipe connected to the air outlet channel. However, after prolonged use, the one-way valve is prone to aging, leading to poor sealing. This causes water to flow back through the air outlet channel, air outlet chamber, air delivery chamber, air intake chamber, and air intake gap, resulting in water easily entering the drive component and causing damage. This affects the service life of the diaphragm pump. Furthermore, this structural design prevents effective sealing between the fixed base and the drive component, and between the fixed base and the diaphragm seat, resulting in significant noise during operation. Utility Model Content

[0004] The present invention aims to provide an air pump to solve at least one of the aforementioned technical problems.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: an air pump, comprising a drive component, a fixed seat, a diaphragm seat, a valve seat, and a pump cover assembled in sequence. The pump cover is provided with an air outlet channel. An air outlet chamber and an air inlet chamber are provided between the valve seat and the pump cover. An air inlet gap is provided at the edge between the diaphragm seat and the valve seat. A diaphragm that is driven and connected to the drive component is installed on the diaphragm seat. An air delivery chamber is provided between the diaphragm and the valve seat. The air inlet gap, air inlet chamber, air delivery chamber, air outlet chamber, and air outlet channel are sequentially connected along the air outlet direction. A first one-way valve is provided on the valve seat located between the air inlet chamber and the air delivery chamber. A second one-way valve is provided on the valve seat located between the air outlet chamber and the air delivery chamber.

[0006] Preferably, the valve seat is provided with a first channel, a second channel and a third channel, the air intake gap is connected to the air intake chamber through the first channel, the air intake chamber is connected to the air delivery chamber through the second channel, and the air delivery chamber is connected to the air outlet chamber through the third channel.

[0007] Preferably, the top side of the valve seat is provided with an air outlet valve groove, the bottom side of the valve seat is provided with an air inlet valve groove, the first one-way valve is installed on the air inlet valve groove and the first one-way valve is located between the second channel and the air delivery chamber, the second one-way valve is installed on the air outlet valve groove and the second one-way valve is located between the third channel and the air outlet chamber.

[0008] Preferably, there are multiple air outlet chambers and air inlet chambers that correspond to each other, and the air inlet chambers are arranged around the periphery of the air outlet chambers.

[0009] Preferably, it further includes a rubber sleeve, which is sealed from bottom to top around the drive unit, the fixed seat, and the diaphragm seat.

[0010] Preferably, the driving component is a motor, and an eccentric wheel and a swing frame are installed in the fixed base. The motor is driven by the eccentric wheel, the eccentric wheel is driven by the swing frame, and the swing frame is driven by the diaphragm.

[0011] Preferably, the valve seat has multiple bosses on its circumferential edge, and the pump cover has multiple recesses on its circumferential edge, with the bosses and recesses corresponding to each other for limiting fit.

[0012] Preferably, it also includes a first screw, and the valve seat, diaphragm seat, and fixed seat are provided with corresponding first screw holes. The first screw is used to lock the upper cover, valve seat, diaphragm seat, and fixed seat together.

[0013] Preferably, it also includes a second screw, and the fixing seat and the driving component are provided with corresponding second screw holes. The fixing seat and the driving component are locked together by the second screw and the second screw hole.

[0014] This utility model has the following beneficial effects:

[0015] In this invention, when the first and second one-way valves age and are damaged after prolonged use, the water in the outlet pipe can sequentially flow back through the outlet channel, outlet chamber, delivery chamber, and inlet chamber, and finally be discharged to the outside of the air pump through the inlet gap. Since the outlet chamber and inlet chamber are located between the valve seat and the pump cover, the inlet gap is located at the edge between the diaphragm seat and the valve seat, and the delivery chamber is located between the diaphragm and the valve seat, the drainage path will not pass through the interior of the diaphragm seat, the fixed seat, and the drive component, thereby preventing water from entering and damaging the drive component and extending the service life of the air pump. Attached Figure Description

[0016] Figure 1 This is a perspective view of an embodiment of the present invention.

[0017] Figure 2 This is a front view of an embodiment of the present invention.

[0018] Figure 3 This is an exploded view of an embodiment of the present invention.

[0019] Figure 4 This is a cross-sectional view of an embodiment of the present invention at one location.

[0020] Figure 5 This is a cross-sectional view of an embodiment of the present invention at another location.

[0021] Figure 6 This is a top-side view of the valve seat according to an embodiment of the present invention.

[0022] Figure 7 This is a bottom-view view of the valve seat according to an embodiment of the present invention.

[0023] Figure 8 This is a schematic diagram of the assembly of the valve seat and pump cover according to an embodiment of this utility model.

[0024] Figure labels: 1 Drive component, 2 Fixed base, 3 Diaphragm seat, 4 Valve seat, 41 Boss, 5 Pump cover, 51 Recess, 6 Eccentric wheel, 7 Swing frame, 8 Diaphragm, 9 Inlet gap, 10 Inlet chamber, 11 Delivery chamber, 12 Outlet chamber, 13 Outlet channel, 14 First check valve, 15 Second check valve, 16 First channel, 17 Second channel, 18 Third channel, 19 Inlet valve slot, 20 Outlet valve slot, 21 First screw, 22 Second screw. Detailed Implementation

[0025] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0026] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] See Figure 1-8 As shown in the figure, as an embodiment of the present invention, an air pump is provided, specifically a diaphragm air pump, including a drive component 1, a fixed seat 2, a diaphragm seat 3, a valve seat 4, and a pump cover 5 assembled in sequence. The pump cover 5 is provided with an air outlet channel 13, and an air outlet pipe is externally connected to the air outlet channel 13. An air outlet chamber 12 and an air inlet chamber 10 are provided between the valve seat 4 and the pump cover 5. An air inlet gap 9 is provided at the edge between the diaphragm seat 3 and the valve seat 4. A diaphragm 8, which is driven and connected to the drive component 1, is installed on the diaphragm seat 3. An air delivery chamber 11 is provided between the diaphragm 8 and the valve seat 4. The air pump of this invention comprises an air inlet 9, an air inlet chamber 10, an air delivery chamber 11, an air outlet chamber 12, and an air outlet channel 13 connected sequentially along the air outlet direction. An air inlet 9 is provided at the edge between the diaphragm seat 3 and the valve seat 4. A first one-way valve 14 is provided on the valve seat 4 located between the air inlet chamber 10 and the air delivery chamber 11, allowing the air inlet chamber 10 to deliver air unidirectionally towards the air delivery chamber 11. A second one-way valve 15 is provided on the valve seat 4 located between the air outlet chamber 12 and the air delivery chamber 11, allowing the air delivery chamber 11 to deliver air unidirectionally towards the air outlet chamber 12. The air pump of this invention drives the diaphragm 8 to reciprocate through the drive component 1, thereby drawing gas into the air pump from the air inlet 9. The gas then flows and is transported sequentially through the air inlet chamber 10, the air delivery chamber 11, the air outlet chamber 12, and the air outlet channel 13, and finally discharged through the air outlet pipe connected to the air outlet channel 13, thus completing the gas intake and exhaust process (e.g., air inlet 9). Figure 5(The arrows in the diagram indicate the direction of gas intake and exhaust paths). When the air pump stops working, the exhaust pipe is filled with water. The first one-way valve 14 and the second one-way valve 15 act as check valves to prevent water in the exhaust pipe from flowing back into the air pump through the exhaust channel 13 and the exhaust chamber 12. When the first one-way valve 14 and the second one-way valve 15 age and are damaged after long-term use, the water in the exhaust pipe can flow back through the exhaust channel 13, the exhaust chamber 12, the air delivery chamber 11, and the air intake chamber 10 in sequence, and finally be discharged to the outside of the air pump through the air intake gap 9. Since the exhaust chamber 12 and the air intake chamber 10 are located between the valve seat 4 and the pump cover 5, the air intake gap 9 is located at the edge between the diaphragm seat 3 and the valve seat 4, and the air delivery chamber 11 is located between the diaphragm 8 and the valve seat 4, the drainage path will not pass through the interior of the diaphragm seat 3, the fixed seat 2, and the drive component 1, thereby preventing water from entering and damaging the drive component 1 and extending the service life of the air pump.

[0029] In this embodiment, the valve seat 4 is provided with a first channel 16, a second channel 17, and a third channel 18. The air inlet gap 9 is connected to the air inlet chamber 10 through the first channel 16, the air inlet chamber 10 is connected to the air delivery chamber 11 through the second channel 17, and the air delivery chamber 11 is connected to the air outlet chamber 12 through the third channel 18, ensuring the stability of gas delivery. The valve seat 4 has an air outlet valve groove 20 on its top side and an air inlet valve groove 19 on its bottom side. A first one-way valve 14 is installed in the air inlet valve groove 19 and is located between the second channel 17 and the air delivery chamber 11. A second one-way valve 15 is installed in the air outlet valve groove 20 and is located between the third channel 18 and the air outlet chamber 12. This arrangement improves the airtightness of the pump when it is stopped and enhances the stability of gas delivery during operation.

[0030] In this embodiment, there are multiple air outlet chambers 12 and air inlet chambers 10 corresponding to each other, and the air inlet chambers 10 are arranged around the periphery of the air outlet chambers 12. The air inlet gap 9 is located at the edge between the diaphragm seat 3 and the valve seat 4, that is, the air inlet gap 9 corresponds to the periphery of the air inlet chamber 10. This arrangement allows gas to be drawn into the air pump from the periphery of the air pump and finally discharged to the air outlet pipe through the air outlet channel 13 in the center of the air pump. The water in the air outlet pipe flows back into the middle of the air pump through the air outlet channel 13 in the center of the air pump, and then flows towards the periphery of the air pump, and finally is discharged through the air inlet gap 9. Since the air inlet path (or drainage path) is located in the upper part of the air pump and the path is relatively short, the upper space of the air pump is fully utilized, and the air inlet and drainage efficiency of the air pump is further improved.

[0031] To enable the air pump to be used in a water-rich environment, this embodiment also includes a rubber sleeve. The rubber sleeve is sealed from bottom to top around the drive unit 1, the fixed seat 2, and the diaphragm seat 3. This arrangement allows for effective sealing between the fixed seat 2 and the motor, and between the fixed seat 2 and the diaphragm seat 3, thereby effectively reducing the noise generated by the air pump during operation. The actual noise level is below 5 dB, and the service life of the water pump is further extended, making it safer and more reliable.

[0032] In this embodiment, the driving component 1 is a motor, and the fixed base 2 is equipped with an eccentric wheel 6 and a swing frame 7. The motor is driven by the eccentric wheel 6, the eccentric wheel 6 is driven by the swing frame 7, and the swing frame 7 is driven by the diaphragm 8, thereby driving the diaphragm 8 to reciprocate and complete the continuous intake and exhaust process of gas by the air pump.

[0033] In this embodiment, the valve seat 4 is provided with a plurality of protrusions 41 on its circumferential edge, and the pump cover 5 is provided with a plurality of recesses 51 on its circumferential edge. The protrusions 41 and the recesses 51 are correspondingly limited and matched, thereby playing the role of limiting the assembly rotation of the pump cover 5.

[0034] In this embodiment, a first screw 21 and a second screw 22 are also included. The valve seat 4, diaphragm seat 3, and fixed seat 2 are provided with corresponding first screw holes. The first screw 21 is locked into the first screw hole to securely connect the upper cover, valve seat 4, diaphragm seat 3, and fixed seat 2. The fixed seat 2 and the drive component 1 are provided with corresponding second screw holes. The second screw 22 is locked into the second screw hole to securely connect the fixed seat 2 and the drive component 1, thereby ensuring the assembly stability of the air pump.

[0035] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that any changes in form and detail made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims fall within the protection scope of the present invention.

Claims

1. An air pump, characterized in that: The device includes a drive unit, a fixed seat, a diaphragm seat, a valve seat, and a pump cover, which are assembled in sequence. The pump cover is provided with an air outlet channel. An air outlet chamber and an air inlet chamber are provided between the valve seat and the pump cover. An air inlet gap is provided at the edge between the diaphragm seat and the valve seat. A diaphragm that is driven and connected to the drive unit is installed on the diaphragm seat. An air delivery chamber is provided between the diaphragm and the valve seat. The air inlet gap, air inlet chamber, air delivery chamber, air outlet chamber, and air outlet channel are connected in sequence along the air outlet direction. A first one-way valve is provided on the valve seat located between the air inlet chamber and the air delivery chamber. A second one-way valve is provided on the valve seat located between the air outlet chamber and the air delivery chamber.

2. The air pump according to claim 1, characterized in that: The valve seat is provided with a first channel, a second channel and a third channel. The air intake gap is connected to the air intake chamber through the first channel, the air intake chamber is connected to the air delivery chamber through the second channel, and the air delivery chamber is connected to the air outlet chamber through the third channel.

3. The air pump according to claim 2, characterized in that: The valve seat has an outlet valve slot on the top side and an inlet valve slot on the bottom side. A first check valve is installed on the inlet valve slot and is located between the second channel and the air delivery chamber. A second check valve is installed on the outlet valve slot and is located between the third channel and the outlet chamber.

4. The air pump according to claim 1, characterized in that: There are multiple air outlet chambers and air inlet chambers that correspond to each other, and the air inlet chambers are arranged around the air outlet chambers.

5. The air pump according to claim 1, characterized in that: It also includes a rubber sleeve, which is sealed from bottom to top outside the drive unit, the fixed seat and the diaphragm seat.

6. The air pump according to claim 1, characterized in that: The driving component is a motor. An eccentric wheel and a swing frame are installed in the fixed base. The motor is connected to the eccentric wheel for driving, the eccentric wheel is connected to the swing frame for transmission, and the swing frame is connected to the diaphragm for transmission.

7. The air pump according to claim 1, characterized in that: The valve seat has multiple bosses on its circumferential edge, and the pump cover has multiple recesses on its circumferential edge. The bosses and recesses are matched and limit each other.

8. The air pump according to claim 1, characterized in that: It also includes a first screw, and the valve seat, diaphragm seat and fixed seat are provided with corresponding first screw holes. The first screw is locked in place with the first screw hole to achieve a secure connection between the top cover, valve seat, diaphragm seat and fixed seat.

9. The air pump according to claim 1, characterized in that: It also includes a second screw. The mounting base and the driving component are provided with corresponding second screw holes. The mounting base and the driving component are locked together by the second screw and the second screw hole.

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