Double-power double-pump electromagnetic oxygenating pump

Abstract

The utility model provides a dual-power dual-pump electromagnetic oxygenating pump, which comprises two sets of electromagnetic parts and a pump body part, and has the working principle that an annular strong magnetic field gap is formed by an outer magnetizer, a neodymium permanent main magnet, an inner magnetizer and a neodymium permanent auxiliary magnet, and the magnetic field intensity of the magnetic field gap is enhanced by adopting the neodymium permanent auxiliary magnet; a coil wound on the framework forms an electromagnet and is arranged in a gap of the strong magnetic field, the coil is fixed with a diaphragm in the pump body through a connecting frame, an alternating magnetic field is generated on the coil after alternating current is switched on, and the diaphragm axially reciprocates in the pump body under the interaction of the fixed magnetic field and the alternating magnetic field. The compressed air is continuously output from the shell exhaust pipe; three-stage vibration reduction, three-stage noise isolation and three-stage noise elimination technologies are adopted, so that the electromagnetic pump has good performance in the aspects of efficiency, pressure, air quantity and silence.

Description

Technical Field

[0001] This invention relates to an aquarium oxygenation pump, and more particularly to a dual-power dual-pump electromagnetic oxygenation pump. Background Technology

[0002] Currently, small oxygen pumps come in various types, including motor-driven, piezoelectric ceramic, and electromagnetic-driven. However, compared to other types with the same volume and power, small electromagnetic oxygen pumps are larger, have smaller gas volume, lower pressure, lower efficiency, and higher noise. Summary of the Invention

[0003] The purpose of this invention is to provide a dual-power, dual-pump electromagnetic oxygen pump. This pump consists of two identical electromagnetic drive components and a pump body. Its working principle is as follows: an outer magnetic conductor, a neodymium permanent main magnet, an inner magnetic conductor, and a neodymium permanent auxiliary magnet are combined to form a ring-shaped strong magnetic field gap between the outer and inner magnetic conductors. The neodymium permanent auxiliary magnet, positioned above the inner magnetic conductor, further enhances the magnetic field strength of the gap. A coil wound around a frame constitutes an electromagnet. This coil is placed in the magnetic field gap. When alternating current flows through the coil, an alternating magnetic field is generated. Under the interaction of the fixed magnetic field and the alternating magnetic field, the coil is drawn in or pushed out of the strong magnetic field gap according to the change in power frequency, producing axial reciprocating motion. The magnetic field polarities of the two electromagnetic drive components are opposite; when one coil is drawn in, the other is pushed out. Fixing screws are connected to the diaphragms and connecting frames of the two pumps via connecting rods. Two electromagnetic drive units are connected via an external magnetic connecting pipe, and then connected to two pump bodies via pump casings. During operation, the diaphragm reciprocates axially within its respective pump body synchronously with the coil. When the coil is drawn in, the diaphragm in the pump body is pulled out, the intake valve opens, and the exhaust valve closes. Air enters the pump body through the outer shell intake port, inner shell intake pipe, external magnetic intake port, external magnetic material, neodymium permanent main magnet, inner magnetic material, neodymium permanent secondary magnet, gaps between the coil and coil frame, gaps between the connecting rod and the center hole, intake pipe, and intake valve, increasing the pump chamber volume. When the coil is pushed out, the diaphragm is pushed into the pump body, the intake valve closes, and the exhaust valve opens, decreasing the pump chamber volume and compressing and expelling the air. The diaphragm continuously repeats the above process. The compressed air in the two pumps merges through the exhaust pipe and is continuously output from the exhaust port. The compressed air entering the inner shell is decompressed and enters the second-stage silencer and third-stage silencer through the inner shell exhaust pipe, before being output from the outer shell exhaust pipe. The neodymium permanent main magnet and inner magnetic conductor are housed within the outer magnetic conductor. The use of an inner magnetic conductor reduces volume, effectively shields the magnetic field, and minimizes magnetic leakage. The air intake path design facilitates the removal of the small amount of heat generated on the coils. A connecting rod passes through the central holes of the outer magnetic conductor, neodymium permanent main magnet, inner magnetic conductor, and neodymium permanent secondary magnet in both electromagnetic components. The connecting rod ensures the concentricity of the two coils and coil frames within the magnetic field gap, and, in conjunction with the diaphragms of the two pumps, suspends the coils and coil frames within the strong magnetic field gap. The diaphragm employs a dual-wave, bidirectional design suitable for large-amplitude operation, reducing power loss and improving pump efficiency. The end cap has a concave, curved shape on one side facing the pump chamber. The maximum amplitude of the diaphragm being pushed into the pump chamber matches this concave shape. When the working amplitude of the diaphragm being pushed into the pump chamber is less than the maximum amplitude, the pump chamber volume is minimized during exhaust, allowing for the discharge of more air. Through holes are provided on the connecting frame to reduce resistance generated during the movement of the coils and coil frames. The electromagnetic drive section, pump body section, pump casing, and external magnetic connecting pipe constitute the electromagnetic oxygen pump assembly.The pump casing, external magnetic connecting pipe, and end cap fix and seal the electromagnetic drive part and pump body part in the casing, achieving the first stage of isolation and noise reduction. Vibration-damping rubber parts and their shafts provide the first stage of vibration damping for the electromagnetic oxygen pump assembly. The assembly is then suspended in the inner casing by a tension spring hanger, tension spring, and tension spring hanger, providing excellent vibration damping and buffering. This minimizes and absorbs axial vibrations generated by the electromagnetic components. The inner casing also seals the assembly, achieving the second stage of vibration damping and noise reduction. Compressed air discharged from the exhaust port directly enters the end of the inner shell. The increased space allows for decompression of the compressed air. The exhaust port, inner shell, and inner shell exhaust pipe constitute the expansion chamber silencer, achieving the first stage of noise reduction. Air discharged from the inner shell exhaust pipe at the front end of the inner shell sequentially enters the second and third stage silencers before being output through the outer shell exhaust pipe. The three-stage expansion chamber silencer effectively eliminates the noise generated by the pump body. The sealed outer shell and outer shell anti-vibration pads achieve the third stage of noise isolation and vibration reduction.

[0004] The technical solution of the present invention: The electromagnetic drive part of the dual-power dual-pump electromagnetic oxygen pump consists of an outer magnetic conductor, a neodymium permanent main magnet, an inner magnetic conductor, a neodymium permanent secondary magnet, a coil, a coil frame, a connecting frame, and a power supply flexible connection. Both the neodymium permanent main magnet and the neodymium permanent secondary magnet are cylindrical magnets, each with a central hole at its center. The volume of the neodymium permanent main magnet is larger than that of the neodymium permanent secondary magnet. The outer magnetic conductor is a hollow, bottomed cylinder with a central hole and an air inlet at the bottom. The inner magnetic conductor is a cylinder with a central hole at its center. When the outer magnetic conductor, neodymium permanent main magnet, inner magnetic conductor, and neodymium permanent secondary magnet are combined, the central hole passes through the centers of all three magnets, and the holes have the same diameter. The neodymium permanent main magnet and the inner magnetic conductor are placed inside the outer magnetic conductor, with the inner magnetic conductor positioned above the neodymium permanent main magnet and the neodymium permanent secondary magnet positioned above the inner magnetic conductor. The diameter of the inner magnetic conductor is larger than that of the neodymium permanent main magnet and the neodymium permanent secondary magnet. A ring-shaped strong magnetic field gap is formed between the outer and inner magnetic conductors, and a coil with a coil frame is placed in this strong magnetic field gap. The pump body consists of a pump casing, diaphragm, fixing screws, end caps, an intake valve on the end caps, an intake pipe, an exhaust valve hole, an exhaust valve, an exhaust valve cover, and an exhaust port. The coil frame is made of insulating material or metal-insulated composite material. The coil is wound on the coil frame, and the end of the coil frame is fixed to the connecting frame. The connecting frame has through holes around its perimeter. One end of the outer magnetic conductor of each of the two electromagnetic drive units is fixed to the outer magnetic conductor connecting pipe, and the other end of the outer magnetic conductor is fixed to each of the two pump casings. The inner diameters of the outer magnetic conductor connecting pipe and different parts of the pump casing are different, corresponding to the outer magnetic conductor, diaphragm, and end cap, respectively, for limiting and fixing during installation. The electromagnetic drive unit, pump body, pump casing, and outer magnetic conductor connecting pipe constitute the electromagnetic oxygen pump assembly. The connecting rod passes through the center hole of each of the two electromagnetic drive units and is inserted into the connecting frame at both ends. The diaphragm and connecting frame are fixed to the two ends of the connecting rod with fixing screws. The end caps are inserted from both ends of the pump casing and pressed against the edge of the diaphragm. Once inserted into place, they are locked in place by latches. The coil is connected to the power supply via a power flexible cable. An exhaust valve cover is located at the exhaust valve end, and an exhaust pipe is installed on the exhaust valve cover. The exhaust pipes on the two pump bodies converge at the end of the inner shell and enter the exhaust port. Vibration-damping rubber shafts are located on the end caps at both ends of the electromagnetic oxygen pump assembly. Vibration-damping rubber components are installed on the vibration-damping rubber shafts, and tension spring hangers are located in the grooves of the vibration-damping rubber components. Tension spring hangers are located inside the inner shell; one end of the tension spring hangs on the tension spring hanger, and the other end hangs on the tension spring hanger inside the inner shell, suspending the electromagnetic oxygen pump assembly within the inner shell via the tension spring. An inner shell exhaust pipe is located at the front end of the inner shell. A second-stage muffler and a third-stage muffler are connected in series between the inner shell exhaust pipe and the outer shell exhaust pipe. The third-stage muffler is connected to the outer shell exhaust pipe. A flexible inner shell air inlet pipe is located between the middle of the outer magnetic conductor connecting pipe and the inner shell. An outer shell air inlet is located on the outer shell.

[0005] This invention relates to a dual-power dual-pump electromagnetic oxygen pump, comprising a shell, an inner shell, an outer magnetic conductor, a neodymium permanent main magnet, an inner magnetic conductor, a neodymium permanent secondary magnet, a coil, a coil frame, a power flexible cable, a connecting frame, a through hole, a diaphragm, fixing screws, an end cap, an exhaust valve, an exhaust valve hole, an exhaust valve cover, an exhaust pipe, an exhaust port, an intake valve, an intake pipe, a connecting rod, an air inlet in the shell, an air inlet pipe in the inner shell, an air inlet in the outer magnetic conductor, a center hole, an outer magnetic conductor connecting pipe, a pump housing, vibration damping rubber components, a vibration damping rubber component shaft, a tension spring mounting plate, a tension spring, a tension spring hanger, an exhaust pipe in the inner shell, a second-stage muffler, a third-stage muffler, an exhaust pipe in the outer shell, and a buckle. Its distinguishing feature is that the dual-power dual-pump electromagnetic oxygen pump consists of two sets of electromagnetic drive components and two sets of pump body components. The electromagnetic drive section consists of the outer magnetic conductor, the neodymium permanent main magnet, the inner magnetic conductor, the neodymium permanent secondary magnet, the coil, the coil frame, the connecting frame, and the power supply flexible connection. The magnetic field polarities of the two electromagnetic drive sections are opposite. The pump body consists of the pump housing, the diaphragm, the fixing screws, the end cover, and the air inlet valve, the air inlet pipe, the exhaust valve hole, the exhaust valve, the exhaust valve cover, and the exhaust port provided on the end cover. The electromagnetic drive section, the pump body, the pump housing, and the outer magnetic conductor connecting pipe constitute the electromagnetic oxygen pump assembly. The inner shell seals the electromagnetic oxygen pump assembly, the vibration damping rubber component, the vibration damping rubber component shaft, the tension spring mounting plate, the tension spring, and the tension spring hanger within the shell. The second-stage muffler and the third-stage muffler are connected in series between the inner shell exhaust pipe and the outer shell exhaust pipe. The outer shell seals the inner shell, the second-stage muffler and the third-stage muffler inside the shell. The coil is connected to the power supply through the power flexible connection.

[0006] The neodymium permanent main magnet and the neodymium permanent secondary magnet are cylindrical magnets, each with a central hole at its center. The volume of the neodymium permanent main magnet is larger than that of the neodymium permanent secondary magnet. The outer magnetic conductor is a hollow, bottomed cylinder with the central hole and an air inlet at its bottom. The inner magnetic conductor is cylindrical with the central hole at its center. When the outer magnetic conductor, the neodymium permanent main magnet, the inner magnetic conductor, and the neodymium permanent secondary magnet are combined, the central hole penetrates the outer magnetic conductor, the neodymium permanent main magnet, and the inner magnetic conductor. The center of the magnet, the neodymium permanent secondary magnet, the outer magnetic conductor, the neodymium permanent main magnet, the inner magnetic conductor, and the central hole on the neodymium permanent secondary magnet have the same diameter; the neodymium permanent main magnet and the inner magnetic conductor are placed inside the outer magnetic conductor, the inner magnetic conductor is placed above the neodymium permanent main magnet, the neodymium permanent secondary magnet is placed above the inner magnetic conductor, the diameter of the inner magnetic conductor is larger than the diameter of the neodymium permanent main magnet and the neodymium permanent secondary magnet, and a ring-shaped strong magnetic field gap is formed between the outer magnetic conductor and the inner magnetic conductor.

[0007] The coil is wound around the coil frame, and the end of the coil frame is fixed to the connecting frame. The connecting frame is provided with through holes around its perimeter, and the coil with the coil frame is placed in an annular strong magnetic field gap.

[0008] One end of the outer magnetic conductor of each of the two electromagnetic drive units is fixed to the outer magnetic conductor connecting pipe, and the other end of the outer magnetic conductor is fixed to the two pump housings. The inner diameters of the outer magnetic conductor connecting pipe and the pump housings are different, corresponding to the outer magnetic conductor, the diaphragm and the end cap respectively, and are limited and fixed during installation.

[0009] The diaphragm adopts a dual-wave, bidirectional design suitable for large amplitude operation. The center and edge of the diaphragm are fixed parts, and the middle is the working part. The cross-section of the working part resembles a complete sine wave. The center part of the diaphragm is fixed to the connecting frame and the connecting rod, and the edge plane part is fixed to the pump housing and the end cover.

[0010] The connecting rod passes through the central holes of the two sets of electromagnetic parts and is inserted into the connecting frames at both ends. The diaphragm and the connecting frames are fixed to both ends of the connecting rod with the fixing screws.

[0011] The intake valve, intake pipe, exhaust valve hole, exhaust valve, exhaust valve cover, exhaust pipe, and exhaust port are all located on the end cap. The end cap is concave with an arc on the side facing the pump chamber. The maximum range of the diaphragm pushed into the pump body matches the concave shape. The working range of the diaphragm being pushed into the pump body is less than the maximum range. The two end caps are inserted from both ends of the pump housing and pressed tightly against the edge of the diaphragm. After being inserted into place, they are locked by the buckle.

[0012] The exhaust pipes of the two pumps converge at the end of the inner shell and enter the exhaust port. The inner shell exhaust pipe is provided at the front end of the inner shell. The exhaust port, the inner shell, and the inner shell exhaust pipe constitute the first-stage expansion chamber silencer. The second-stage silencer and the third-stage silencer are connected in series between the inner shell exhaust pipe and the outer shell exhaust pipe. The middle part of the outer magnetic conductor connecting pipe is provided with the inner shell air inlet pipe, which is made of a flexible hose. The outer shell is provided with the outer shell air inlet hole.

[0013] The end caps at both ends of the electromagnetic oxygen pump assembly are provided with vibration damping rubber shafts, the vibration damping rubber shafts are provided with vibration damping rubber components, the grooves of the vibration damping rubber components are provided with tension spring hanging plates, the inner shell is provided with tension spring hangers, one end of the tension spring is hung on the tension spring hanging plate, and the other end is hung on the tension spring hanger in the inner shell. The number of tension springs and tension spring hangers at each end is 3, or 4. Attached Figure Description

[0014] Figure 1 It is the main view.

[0015] Figure 2 yes Figure 1 Views 3, 4, 5, 6, 25, and 26 in the text.

[0016] Figure 3 yes Figure 1 Views 7 and 8

[0017] Figure 4 yes Figure 1 Views 10 and 11

[0018] Figure 5 yes Figure 1 12 views

[0019] Figure 6 yes Figure 1 Views 14, 15, 16, 20, and 21 in the text.

[0020] Figure 7 yes Figure 1 29 views in

[0021] Figure 8 yes Figure 1 AA view in

[0022] Outer shell - 1; Inner shell - 2; Outer magnetic conductor - 3; Neodymium permanent main magnet - 4; Inner magnetic conductor - 5; Neodymium permanent secondary magnet - 6; Coil - 7; Coil frame - 8; Power flexible cable - 9; Connector - 10; Through hole - 11; Diaphragm - 12; Fixing screw - 13; End cap - 14; Exhaust valve - 15; Exhaust valve hole - 16; Exhaust valve cover - 17; Exhaust pipe - 18; Exhaust port - 19; Intake valve - 20; Intake pipe - 21 ; Connecting rod-22; Outer shell air inlet-23; Inner shell air inlet pipe-24; Outer magnetic inlet-25; Center hole-26; Outer magnetic connecting pipe-27; Pump housing-28; Vibration damping rubber component-29; Vibration damping rubber component shaft-30; Tension spring hanger-31; Tension spring-32; Tension spring hanger-33; Inner shell exhaust pipe-34; Second stage muffler-35; Third stage muffler-36; Outer shell exhaust pipe-37; Buckle-38. Detailed Implementation Example

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8As shown, a dual-power dual-pump electromagnetic oxygen pump includes a neodymium permanent magnet 4 and an inner magnetic conductor 5 placed inside an outer magnetic conductor 3. The inner magnetic conductor 5 is positioned above the neodymium permanent magnet 4, and a neodymium permanent auxiliary magnet 6 is positioned above the inner magnetic conductor 5. A coil 7 is mounted on a coil frame 8, and a power flexible cable 9 connects the coil 7 and the outer shell 1. The coil frame 8 is fixed to a connecting frame 10, which has a through hole 11. Fixing screws 13 fix a diaphragm 12, a connecting frame 10, and a connecting rod 22 passing through a central hole 26. An end cap 14 has an exhaust valve 15, an exhaust valve hole 16, an exhaust valve cover 17, an exhaust pipe 18, an intake valve 20, and an intake pipe 21. The exhaust pipe 18 communicates with an exhaust port 19. An air inlet 23 is located on the outer shell 1, and an air inlet pipe is located on the inner shell. Channel 24 is connected between the inner shell 2 and the outer magnetic body connecting pipe 27. The outer magnetic body air inlet 25 is located on the outer magnetic body 3. One end of each of the two outer magnetic bodies 3 is inserted into the outer magnetic body connecting pipe 27, and the other end of each of the two outer magnetic bodies 3 is inserted into one end of the pump shell 28. The other end of the pump shell 28 is first fitted with the diaphragm 12, then with the end cover 14, and then locked by the latch 38. The vibration damping rubber shaft 30 is located on the end cover 14, the vibration damping rubber 29 is located on the vibration damping rubber shaft 30, and the groove of the vibration damping rubber 29 is provided with a tension spring hanging plate 31. One end of the tension spring 32 is hung on the tension spring hanging plate 31, and the other end is hung on the tension spring hanging piece 33 in the inner shell 2. The inner shell exhaust pipe 34 and the outer shell exhaust pipe 37 are connected in series with a second-stage muffler 34 and a third-stage muffler 35.

Claims

1. A dual-power, dual-pump electromagnetic oxygen pump, comprising a housing, an inner housing, an outer magnetic conductor, a neodymium permanent main magnet, an inner magnetic conductor, a neodymium permanent secondary magnet, a coil, a coil frame, a power flexible cable, a connecting frame, a through hole, a diaphragm, fixing screws, an end cap, an exhaust valve, an exhaust valve hole, an exhaust valve cover, an exhaust pipe, an exhaust port, an intake valve, an intake pipe, a connecting rod, an intake hole in the housing, an intake pipe in the inner housing, an intake hole in the outer magnetic conductor, a center hole, a connecting pipe for the outer magnetic conductor, a pump housing, vibration damping rubber parts, a vibration damping rubber part shaft, a tension spring mounting plate, a tension spring, a tension spring hanger, an exhaust pipe in the inner housing, a second-stage muffler, a third-stage muffler, an exhaust pipe in the housing, and a buckle; characterized by: The dual-power, dual-pump electromagnetic oxygen pump consists of two electromagnetic drive units and two pump body units. The electromagnetic drive units comprise an outer magnetic conductor, a neodymium permanent main magnet, an inner magnetic conductor, a neodymium permanent secondary magnet, a coil, a coil frame, a connecting frame, and a power supply cable. The magnetic field polarities of the two electromagnetic drive units are opposite. The pump body units consist of an inner shell, a diaphragm, fixing screws, an end cover, and an intake valve, an intake pipe, an exhaust valve hole, an exhaust valve, an exhaust valve cover, and a discharge valve. The air inlet is composed of an electromagnetic drive section, a pump body section, a pump housing, and an outer magnetic connecting pipe, forming an electromagnetic oxygen pump assembly. The inner housing seals the electromagnetic oxygen pump assembly, the vibration damping rubber component, the vibration damping rubber component shaft, the tension spring mounting plate, the tension spring, and the tension spring hanger within the housing. A second-stage muffler and a third-stage muffler are connected in series between the exhaust pipe of the inner housing and the exhaust pipe of the outer housing. The outer housing seals the inner housing, the second-stage muffler, and the third-stage muffler within the housing. The coil is connected to a power source via a power flexible connection.

2. The dual-power dual-pump electromagnetic oxygen pump according to claim 1, characterized in that... The neodymium permanent main magnet and the neodymium permanent secondary magnet are cylindrical magnets, each with a central hole at its center. The volume of the neodymium permanent main magnet is larger than that of the neodymium permanent secondary magnet. The outer magnetic conductor is a hollow, bottomed cylinder with the central hole and an air inlet at its bottom. The inner magnetic conductor is cylindrical with the central hole at its center. When the outer magnetic conductor, the neodymium permanent main magnet, the inner magnetic conductor, and the neodymium permanent secondary magnet are combined, the central hole penetrates through the outer magnetic conductor and the... The centers of the neodymium permanent main magnet, the inner magnetic conductor, and the neodymium permanent secondary magnet are all the same diameter as the central holes on the outer magnetic conductor, the neodymium permanent main magnet, the inner magnetic conductor, and the neodymium permanent secondary magnet. The neodymium permanent main magnet and the inner magnetic conductor are placed inside the outer magnetic conductor, with the inner magnetic conductor positioned above the neodymium permanent main magnet and the neodymium permanent secondary magnet positioned above the inner magnetic conductor. The diameter of the inner magnetic conductor is larger than the diameters of the neodymium permanent main magnet and the neodymium permanent secondary magnet. An annular strong magnetic field gap is formed between the outer magnetic conductor and the inner magnetic conductor. The coil is wound on the coil frame, and the end of the coil frame is fixed to the connecting frame. The connecting frame is provided with through holes around its perimeter. The coil with the coil frame is placed in the annular strong magnetic field gap.

3. The dual-power dual-pump electromagnetic oxygen pump according to claim 1, characterized in that... The coil is wound around the coil frame, and the end of the coil frame is fixed to the connecting frame. The connecting frame is provided with through holes around its perimeter, and the coil with the coil frame is placed in an annular strong magnetic field gap.

4. The dual-power dual-pump electromagnetic oxygen pump according to claim 1, characterized in that... One end of the outer magnetic conductor of each of the two electromagnetic drive units is fixed to the outer magnetic conductor connecting pipe, and the other end of the outer magnetic conductor is fixed to the two pump housings. The inner diameters of the outer magnetic conductor connecting pipe and the pump housings are different, corresponding to the outer magnetic conductor, the diaphragm and the end cap respectively, and are limited and fixed during installation.

5. The dual-power dual-pump electromagnetic oxygen pump according to claim 1, characterized in that... The diaphragm adopts a dual-wave, bidirectional design suitable for large amplitude operation. The center and edge of the diaphragm are fixed parts, and the middle is the working part. The cross-section of the working part resembles a complete sine wave. The center part of the diaphragm is fixed to the connecting frame and the connecting rod, and the edge plane part is fixed to the pump housing and the end cover.

6. The dual-power dual-pump electromagnetic oxygen pump according to claim 1, characterized in that... The connecting rod passes through the central holes of the two sets of electromagnetic parts and is inserted into the connecting frames at both ends. The diaphragm and the connecting frames are fixed to both ends of the connecting rod with the fixing screws.

7. The dual-power dual-pump electromagnetic oxygen pump according to claim 1, characterized in that... The intake valve, intake pipe, exhaust valve hole, exhaust valve, exhaust valve cover, exhaust pipe, and exhaust port are all located on the end cap. The end cap is concave with an arc on the side facing the pump chamber. The maximum range of the diaphragm pushed into the pump body matches the concave shape. The working range of the diaphragm being pushed into the pump body is less than the maximum range. The two end caps are inserted from both ends of the pump housing and pressed tightly against the edge of the diaphragm. After being inserted into place, they are locked by the buckle.

8. The dual-power dual-pump electromagnetic oxygen pump according to claim 1, characterized in that... The exhaust pipes of the two pumps converge at the end of the inner shell and enter the exhaust port. The inner shell exhaust pipe is provided at the front end of the inner shell. The exhaust port, the inner shell, and the inner shell exhaust pipe constitute the first-stage expansion chamber silencer. The second-stage silencer and the third-stage silencer are connected in series between the inner shell exhaust pipe and the outer shell exhaust pipe. The middle part of the outer magnetic conductor connecting pipe is provided with the inner shell air inlet pipe, which is made of a flexible hose. The outer shell is provided with the outer shell air inlet hole.

9. The dual-power dual-pump electromagnetic oxygen pump according to claim 1, characterized in that... The end caps at both ends of the electromagnetic oxygen pump assembly are provided with vibration damping rubber shafts, the vibration damping rubber shafts are provided with vibration damping rubber components, the grooves of the vibration damping rubber components are provided with tension spring hanging plates, the inner shell is provided with tension spring hangers, one end of the tension spring is hung on the tension spring hanging plate, and the other end is hung on the tension spring hanger in the inner shell. The number of tension springs and tension spring hangers at each end is 3, or 4.

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