A double-cylinder air pump for pulse oxygen concentrator

Abstract

The utility model relates to the technical field of double-cylinder air pumps for pulse oxygen concentrators, and discloses a double-cylinder air pump for pulse oxygen concentrators, including an air pump, the air pump is composed of an air pump top cover, filter cotton, a first O-ring and an upper shell of the air pump, and two piston cylinders are installed below the bottom of the air pump, the piston cylinder includes a connecting rod, a piston, a valve plate, a valve sheet, a second air pump side cover and a first air pump side cover, and the valve plate and the valve sheet respectively control the opening and closing of the valve under the movement of the piston. The utility model is provided with a piston cylinder, and when the piston pushes toward the first air pump side cover, the air pressure between the valve plate and the first air pump side cover is used for the valve sheet to close the valve plate, and the piston discharges the gas from the air outlet provided on the first air pump side cover, and supplies it to an external device for use, and the filtered air is supplied simultaneously through the piston cylinders at both ends, so that the kinetic energy generated by the motor is effectively utilized, the kinetic energy loss of the motor is reduced, and a large flow output is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of double-cylinder air pump equipment for a pulse oxygen generator, in particular to a double-cylinder air pump for a pulse oxygen generator. Background Art

[0002] The air pump is also called an air pump, an air pump, or an inflation pump. It works by running a motor. When the motor is running, the valve of the communicating device is opened by the atmospheric pressure, and the gas enters the air cylinder. When air is inflated into the tire, the valve is closed by the air pressure in the air cylinder, and the gas enters the tire.

[0003] The application number is 202021412619.0, which discloses a double-cylinder air pump, including a mounting part, a driving motor, a transmission mechanism, two pistons and two piston cylinders, and an air pipe; the two piston cylinders are arranged on the mounting part, and the two piston cylinders are arranged at 120° to 180°, the two pistons are arranged in the corresponding piston cylinders, and are connected to the transmission mechanism; the driving motor is connected to the transmission mechanism; the driving motor drives the transmission mechanism, so that the pistons reciprocate along the corresponding piston cylinders; the air pipe connects the air outlet ends of the two piston cylinders, and an exhaust port is provided on the air pipe. The transmission mechanism drives the two pistons to reciprocate along the corresponding piston cylinders, and at the same time squeezes the gas in the piston cylinders. After being squeezed, the gas in the two piston cylinders is discharged through the air pipe to the exhaust port, thereby realizing the two-way inflation of the double-cylinder air pump, which doubles the gas volume of a single inflation, and the inflation time and efficiency are also relatively improved.

[0004] Although such a setting realizes two-way inflation of the double-cylinder air pump, which increases the air volume of a single inflation exponentially and relatively improves the inflation time and efficiency, the air pump of this setting drives the two pistons through a transmission mechanism by a driving motor. The transmission mechanism has certain mechanical wear, certain kinetic energy loss, and high energy consumption. Utility Model Content

[0005] The utility model aims to provide a double-cylinder air pump for a pulse oxygen concentrator to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a double-cylinder air pump for a pulse oxygen concentrator, comprising an air pump, which is composed of an air pump top cover, filter cotton, a first type ring and an air pump upper shell;

[0008] Two piston cylinders are installed below the bottom of the air pump, and the piston cylinders include a connecting rod, a piston, a valve plate, a valve sheet, a second air pump side cover and a first air pump side cover;

[0009] The valve plate and the valve sheet respectively control the opening and closing of the valve under the movement of the piston;

[0010] The two connecting rods are connected to each other through an eccentric shaft, and an air passage is provided inside the connecting rod, and the air passage is used for connecting the air pump and the inside of the piston cylinder. A motor is installed under the two piston cylinders, and the motor drives the piston cylinder through the eccentric shaft;

[0011] The purpose of this arrangement is to rotate the eccentric shaft to drive the connecting rod to move repeatedly. When the piston moves away from the first air pump side cover, the valve plate on the valve plate opens, and the gas provided by the air pump enters between the valve plate and the first air pump side cover through the air channel. When the piston pushes toward the first air pump side cover, the air pressure between the valve plate and the first air pump side cover is used by the valve plate to close the valve plate, and the piston discharges the gas from the outlet provided on the first air pump side cover to supply it to external equipment for use.

[0012] Furthermore, a chamber is provided at the top of the air pump upper shell, a groove is provided at the end port of the chamber, the first type ring is installed inside the groove, the filter cotton is installed inside the chamber of the air pump upper shell, and the air pump top cover is installed at the top port of the air pump upper shell to seal the chamber;

[0013] The purpose of this arrangement is to allow air to pass through the filter cotton and be pumped into the air channel by the air pump.

[0014] Furthermore, the motor and the air pump are arranged vertically, and the output shaft of the motor is connected to the eccentric shaft and drives the eccentric shaft;

[0015] The purpose of this arrangement is to drive the eccentric shaft to rotate through the output shaft of the motor.

[0016] Furthermore, an eccentric wheel is installed on the top of the eccentric shaft. The purpose of this arrangement is to form rotational inertia when the eccentric wheel rotates, provide a certain rotational force, reduce the kinetic energy loss of the motor, and play a role in energy saving. The eccentric shaft is fixed to the eccentric wheel by a machine screw. A bearing is installed on the top of the eccentric shaft. The bearing is installed under the air pump for supporting and rotating the eccentric shaft.

[0017] Furthermore, the interior of the piston cylinder is sequentially installed with a piston leather ring, a pressure block, a piston, a valve plate, a third ring and a first air pump side cover, the piston leather ring is close to the connecting rod, an air channel is provided inside the connecting rod, the air channel is used for connecting the air pump and the interior of the piston cylinder, an annular groove is provided on the outer wall of the piston, a second ring is installed on the piston annular groove for filling and sealing the piston, the purpose of such arrangement is that the second ring prevents the air in the air channel from directly passing through the gap between the piston and the piston cylinder and entering the first air pump side cover, thereby improving the air supply efficiency.

[0018] Furthermore, an air pump lower shell is installed on the top of the motor, a shaft clamp is installed on the outside of the motor's shaft, a shaft gasket is installed between the two connecting rods, the shaft gasket is sleeved on the outside of the eccentric shaft, and the shaft gasket and the shaft clamp are used to fix the shaft body. The purpose of this arrangement is to fix the eccentric shaft and the motor to prevent them from shaking left and right during rotation.

[0019] The utility model has the following beneficial effects:

[0020] (1) The utility model drives the eccentric shaft to rotate through the output shaft of the motor by setting the piston cylinder. When the eccentric shaft rotates, it drives the connecting rod to move repeatedly. When the piston moves away from the first air pump side cover, the valve plate on the valve plate opens, and the gas provided by the air pump enters between the valve plate and the first air pump side cover through the air channel. When the piston pushes toward the first air pump side cover, the air pressure between the valve plate and the first air pump side cover is used by the valve plate to close the valve plate. The piston discharges the gas from the air outlet provided on the first air pump side cover and supplies it to the external device. The filtered air is supplied by the piston cylinders at both ends at the same time, which effectively utilizes the air provided by the motor. The kinetic energy generated reduces the kinetic energy loss of the motor and ensures a large flow output. It can not only be used for air supply to portable oxygen concentrators, but also for pumping and inflating. It has the advantages of simple and compact structure, small size, oil-free and environmentally friendly, stable operation, low noise and long service life. At the same time, the connecting rod and the shell are made of high-temperature resistant, fatigue-resistant and dimensionally stable polymer fiber materials. The main characteristics are high structural strength, simple injection molding process, stable product size, lighter weight, and reduced mass production costs. The product has a small-volume double-cylinder structure, and the flow output can reach 7L / min on the basis of its exquisite and compact body.

[0021] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the structure of the utility model;

[0025] Figure 3 It is a schematic diagram of the structure of the utility model;

[0026] Figure 4It is a schematic diagram of the structure of the utility model;

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] In the figure: 1. air pump top cover; 2. filter cotton; 3. first O-ring; 4. air pump upper shell; 5. bearing; 6. machine screw; 7. eccentric shaft; 8. connecting rod; 9. piston leather ring; 10. pressure block; 11. second O-ring; 12. piston; 13. valve plate; 14. third O-ring; 15. first air pump side cover; 16. shaft gasket; 17. shaft clamp ring; 18. air pump lower shell; 19. motor; 20. valve plate; 21. second air pump side cover; 22. eccentric wheel. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1 - Figure 4 As shown, the utility model is a double-cylinder air pump for a pulse oxygen concentrator, comprising an air pump, which is composed of an air pump top cover 1, filter cotton 2, a first O-ring 3 and an air pump upper shell 4;

[0031] Two piston cylinders are installed below the bottom of the air pump, and the piston cylinders include a connecting rod 8, a piston 12, a valve plate 13, a valve sheet 20, a second air pump side cover 21 and a first air pump side cover 15;

[0032] The valve plate 13 and the valve plate 20 respectively control the opening and closing of the valve under the movement of the piston 12;

[0033] The two connecting rods 8 are connected to each other through the eccentric shaft 7. An air channel is provided inside the connecting rod (8). The air channel is used to communicate between the air pump and the inside of the piston cylinder. A motor 19 is installed below the two piston cylinders. The motor 19 drives the piston cylinder through the eccentric shaft 7. An eccentric wheel 22 is installed on the top of the eccentric shaft 7. The purpose of this arrangement is that the eccentric wheel 22 forms a rotational inertia when rotating, provides a certain rotational force, reduces the kinetic energy loss of the motor 19, and plays a role in energy saving. The eccentric shaft 7 is fixed to the eccentric wheel 22 through a machine screw 6. A bearing 5 is installed on the top of the eccentric shaft 7. The bearing 5 is installed below the air pump and is used to support and rotate the eccentric shaft 7.

[0034] When the eccentric shaft 7 rotates, it drives the connecting rod 8 to move repeatedly. When the piston 12 moves away from the first air pump side cover 15, the valve plate 20 on the valve plate 13 opens, and the gas provided by the air pump enters between the valve plate 13 and the first air pump side cover 15 through the air channel. When the piston 12 pushes toward the first air pump side cover 15, the air pressure between the valve plate 13 and the first air pump side cover 15 is used by the valve plate 20 to close the valve plate 13, and the piston 12 discharges the gas from the outlet provided on the first air pump side cover 15 to supply it to the external device.

[0035] A chamber is provided at the top of the air pump upper shell 4, and a groove is provided at the end port of the chamber. The first O-ring 3 is installed inside the groove, the filter cotton 2 is installed inside the chamber of the air pump upper shell 4, and the air pump top cover 1 is installed at the top port of the air pump upper shell 4 to seal the chamber;

[0036] The purpose of such arrangement is that the air passes through the filter cotton 2 and is pumped into the air channel by the air pump.

[0037] The motor 19 and the air pump are arranged vertically, and the output shaft of the motor 19 is connected to the eccentric shaft 7 and drives the eccentric shaft 7;

[0038] The purpose of such arrangement is to drive the eccentric shaft 7 to rotate through the output shaft of the motor 19 .

[0039] The interior of the piston cylinder is sequentially installed with a piston ring 9, a pressure block 10, a piston 12, a valve plate 13, a third O-ring 14 and a first air pump side cover 15. The piston ring 9 is close to the connecting rod 8. An air channel is provided inside the connecting rod 8. The air channel is used to connect the air pump and the interior of the piston cylinder. An annular groove is provided on the outer wall of the piston 12. A second O-ring 11 is installed on the annular groove of the piston 12 for filling and sealing the piston 12. The purpose of this arrangement is that the second O-ring 11 prevents the air in the air channel from directly passing through the gap between the piston 12 and the piston cylinder and entering the first air pump side cover 15, thereby improving the air supply efficiency.

[0040] An air pump lower shell 18 is installed on the top of the motor 19, a shaft clamp ring 17 is installed on the outside of the shaft of the motor 19, a shaft washer 16 is installed between the two connecting rods 8, and the shaft washer 16 is sleeved on the outside of the eccentric shaft 7. The shaft washer 16 and the shaft clamp ring 17 are used to fix the shaft body. The purpose of this arrangement is to fix the eccentric shaft 7 and the motor 19 to prevent them from shaking left and right during rotation.

[0041] When in use, air passes through the filter cotton 2 and is pumped into the air channel by the air pump. The eccentric shaft 7 and the eccentric wheel 22 are driven to rotate by the output shaft of the motor 19. When the eccentric shaft 7 and the eccentric wheel 22 rotate, the connecting rod 8 is driven to move repeatedly. When the piston 12 moves away from the first air pump side cover 15, the valve plate 20 on the valve plate 13 opens, and the gas provided by the air pump enters between the valve plate 13 and the first air pump side cover 15 through the air channel. When the piston 12 pushes toward the first air pump side cover 15, the air pressure between the valve plate 13 and the first air pump side cover 15 is used by the valve plate 20 to close the valve plate 13, and the piston 12 discharges the gas from the air outlet provided on the first air pump side cover 15 to supply it to the outside. It is used in connection with equipment, and the filtered air is supplied through the piston cylinders at both ends at the same time, which effectively utilizes the kinetic energy generated by the motor 19 and ensures the output of a large flow rate. It can not only be used for the air supply of a portable oxygen concentrator, but also can be used for pumping and inflating. It has the advantages of simple and compact structure, small size, oil-free and environmentally friendly, stable operation, low noise, and long service life. At the same time, the connecting rod and the shell are made of high-temperature resistant, fatigue-resistant and dimensionally stable polymer fiber materials. The main characteristics are reflected in the high strength of the structure, simple injection molding process, stable product size, lighter weight, and the cost of mass production is also reduced. The product has a small volume double-cylinder structure, and the flow output can reach 7L / min on the basis of its exquisite and compact body.

[0042] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A double-cylinder air pump for a pulse oxygen concentrator, characterized in that: include: The air pump is composed of an air pump top cover (1), filter cotton (2), a first O-ring (3) and an air pump upper shell (4); Two piston cylinders are installed below the bottom of the air pump, and the piston cylinders include a connecting rod (8), a piston (12), a valve plate (13), a valve sheet (20), a second air pump side cover (21) and a first air pump side cover (15); The valve plate (13) and the valve sheet (20) respectively control the opening and closing of the valve under the movement of the piston (12); The two connecting rods (8) are connected to each other via an eccentric shaft (7). An air passage is provided inside the connecting rod (8) for communicating the inside of the air pump and the piston cylinder. A motor (19) is installed below the two piston cylinders. The motor (19) drives the piston cylinder via the eccentric shaft (7). An eccentric wheel (22) is installed on the top of the eccentric shaft (7).

2. A double-cylinder air pump for a pulse oxygen concentrator according to claim 1, characterized in that: A chamber is provided at the top of the air pump upper shell (4), and a groove is provided at the end port of the chamber. The first O-ring (3) is installed inside the groove, and the filter cotton (2) is installed inside the chamber of the air pump upper shell (4). The air pump top cover (1) is installed at the top port of the air pump upper shell (4) to seal the chamber.

3. A double-cylinder air pump for a pulse oxygen concentrator according to claim 2, characterized in that: The motor (19) and the air pump are arranged vertically, and the output shaft of the motor (19) is connected to the eccentric shaft (7) and drives the eccentric shaft (7).

4. A double-cylinder air pump for a pulse oxygen concentrator according to claim 3, characterized in that: The eccentric shaft (7) is fixed to the eccentric wheel (22) by means of a screw (6), a bearing (5) is installed on the top of the eccentric shaft (7), and the bearing (5) is installed below the air pump for supporting and rotating the eccentric shaft (7).

5. A double-cylinder air pump for a pulse oxygen concentrator according to claim 4, characterized in that: The interior of the piston cylinder is sequentially installed with a piston ring (9), a pressure block (10), a piston (12), a valve plate (13), a third O-ring (14) and a first air pump side cover (15). The piston ring (9) is close to the connecting rod (8). An annular groove is provided on the outer wall of the piston (12). A second O-ring (11) is installed on the annular groove of the piston (12) for filling and sealing the piston (12).

6. A double-cylinder air pump for a pulse oxygen concentrator according to claim 5, characterized in that: An air pump lower shell (18) is installed on the top of the motor (19), a shaft clamp (17) is installed on the outer side of the shaft of the motor (19), a shaft washer (16) is installed between the two connecting rods (8), and the shaft washer (16) is sleeved on the outer side of the eccentric shaft (7). The shaft washer (16) and the shaft clamp (17) are used to fix the shaft body.

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