Double-end air pump with parallel air paths

Abstract

The double-head air pump comprises a driving part, the two driving ends of the driving part are connected with a first branch pump body and a second branch pump body correspondingly, a first silencing cavity is formed in the first branch pump body, a first air inlet is formed in the first silencing cavity, the first air inlet is in one-way communication with a first pressurizing cavity, and the first pressurizing cavity is in one-way communication with a first air outlet path; the first air outlet path passes through the first silencing cavity; a second silencing cavity is formed in the second branch pump body, a second air inlet is formed in the second silencing cavity, the second air inlet is in one-way communication with a second pressurizing cavity, the second pressurizing cavity is in one-way communication with a second air outlet path, and the second air outlet path passes through the second silencing cavity, and the first air outlet path and the second air outlet path are jointly communicated with a third air outlet; according to the double-end air pump, the two branch pump bodies are simultaneously driven by the driving piece with the double driving end parts to form the double-end air pump, the kinetic energy of the driving piece can be utilized to the maximum extent, and the output end of the first air outlet path and the output end of the second air outlet path are integrated into the third air outlet, so that the output air quantity of the double-end air pump is increased, and the double-end air pump can be suitable for more scenes.

Description

Technical Field

[0001] The present application relates to the technical field of air pumps, and in particular to a double-head air pump with parallel air paths. Background Art

[0002] An air pump is a device that extracts air from a space or adds air to a space. Traditional air pumps are composed of a motor and a single pump body. The kinetic energy required for the pump body to operate is much lower than the kinetic energy output by the motor. This results in low efficiency of the air pump and causes energy waste. Single-body air pumps are also subject to greater restrictions when used. In scenarios where the air consumption is large, multiple air pumps must be used at the same time to meet the demand. However, multiple air pumps will undoubtedly take up more space and cause inconvenience in use. Utility Model Content

[0003] The purpose of this application is to address the above problems and provide a dual-head air pump with parallel air paths, comprising:

[0004] a driving member having two driving ends;

[0005] a first sub-pump body, wherein a first muffler cavity is provided in the first sub-pump body and at least one first air inlet is opened thereon, at least one first air inlet is unidirectionally connected to at least one first pressurizing cavity, at least one first pressurizing cavity is unidirectionally connected to at least one first air outlet, and the first air outlet passes through the first muffler cavity;

[0006] a second sub-pump body, wherein a second silencer chamber is provided in the second sub-pump body, and at least one second air inlet is opened on the second sub-pump body, at least one second air inlet is unidirectionally connected to at least one second boosting chamber, at least one second boosting chamber is unidirectionally connected to at least one second air outlet, the free end of the first air outlet and the free end of the second air outlet are commonly connected to a third air outlet, and the second air outlet passes through the second silencer chamber;

[0007] The first sub-pump body and the second sub-pump body are respectively connected to the two driving ends, so that the first boost chamber draws air from the first air inlet and pressurizes it into the first boost gas, and the second boost chamber draws air from the second air inlet and pressurizes it into the second boost gas, and then the first boost gas and the second boost gas are respectively output together through the first air outlet and the second air outlet to the third air outlet.

[0008] According to the technical solution provided in certain embodiments of the present application, at least one first air outlet is further provided on the first sub-pump body, and the first air outlet is correspondingly connected to the first air outlet path; at least one second air outlet is further provided on the second sub-pump body, and the second air outlet is correspondingly connected to the second air outlet path, and the first air outlet and the second air outlet are jointly connected to the third air outlet.

[0009] According to the technical solution provided in certain embodiments of the present application, the first sub-pump body includes a first base and a first cover body fixed to each other, the first base is arranged on one side of the driving member, and a first pump body mechanism is provided between the first base and the first cover body, and the first pump body mechanism has the first boosting chamber inside; the second sub-pump body includes a second base and a second cover body fixed to each other, the second base is arranged on the side of the driving member away from the first base, and a second pump body mechanism is provided between the first base and the second cover body, and the second pump body mechanism has the second boosting chamber inside, and the first pump body mechanism and the second pump body mechanism can be driven by the driving member to inhale air from the first air inlet and the second air inlet respectively, and output from the third air outlet after pressurization.

[0010] According to the technical solutions provided in certain embodiments of the present application, the first air inlet is opened on the first base, the first air outlet is opened on the first cover body, the first silencer cavity is formed between the first pump body mechanism and the first cover body, the second air inlet is opened on the second base, the second air outlet is opened on the second cover body, and the second silencer cavity is formed between the second pump body mechanism and the second cover body; or the first air inlet is opened on the first cover body, the first air outlet is opened on the first base, the first silencer cavity is formed between the first pump body mechanism and the first base, the second air inlet is opened on the second cover body, the second air outlet is opened on the second base, and the second silencer cavity is formed between the second pump body mechanism and the second base, the first air outlet and the second air outlet are connected to the third air outlet through a first air pipe, or the second air outlet is connected to the first air outlet through the first air pipe.

[0011] According to the technical solutions provided in certain embodiments of the present application, the first air inlet is opened on the first cover body, the first air outlet is opened on the first base, the first silencer cavity is formed between the first pump body mechanism and the first base, the second air inlet is opened on the second base, the second air outlet is opened on the second cover body, and the second silencer cavity is formed between the second pump body mechanism and the second cover body; or the first air inlet is opened on the first base, the first air outlet is opened on the first cover body, the first silencer cavity is formed between the first pump body mechanism and the first cover body, the second air inlet is opened on the second cover body, the second air outlet is opened on the second base, and the second silencer cavity is formed between the second pump body mechanism and the second base, and the first air outlet and the second air outlet are connected to the third air outlet through a first air pipe.

[0012] According to the technical solutions provided in certain embodiments of the present application, the first air inlet is provided on the first base, the free end of the first air outlet extends out of the first cover body and is provided with the first air outlet, the first silencer chamber is formed between the first pump body mechanism and the first cover body, the second air inlet is provided on the second base, the second air outlet is provided on the second cover body, and the second silencer chamber is formed between the second pump body mechanism and the second cover body; or the first air inlet is provided on the first base, the first air outlet is provided on the first cover body, the first silencer chamber is formed between the first pump body mechanism and the first cover body, the second air inlet is provided on the second base, the free end of the second air outlet extends out of the second cover body and is provided with the second air outlet, the second silencer chamber is formed between the second pump body mechanism and the second cover body, and the first air outlet and the second air outlet are connected to the third air outlet through the first air pipe.

[0013] According to the technical solutions provided in some embodiments of the present application, the first air inlet is provided on the first base, the free end of the first air outlet extends out of the first cover and is provided with the first air outlet, the first silencing chamber is formed between the first pump body mechanism and the first cover, the second air inlet is provided on the second base, the second air outlet is provided on the second cover, the second silencing chamber is formed between the second pump body mechanism and the second cover, the first air outlet is connected to the second air outlet through a first air pipe, and the second air outlet is connected to the third air outlet through a second air pipe; or the first air inlet is provided on the first base, the first air outlet is provided on the first cover, the first silencing chamber is formed between the first pump body mechanism and the first cover, the second air inlet is provided on the second base, the free end of the second air outlet extends out of the second cover and is provided with the second air outlet, the second silencing chamber is formed between the second pump body mechanism and the second cover, the second air outlet is connected to the first air outlet through the first air pipe, and the first air outlet is connected to the third air outlet through the second air pipe.

[0014] According to the technical solutions provided in certain embodiments of the present application, a third silencing chamber is further provided on the first air pipe.

[0015] According to the technical solution provided in certain embodiments of the present application, the first pump body mechanism and the second pump body mechanism have the same structure, both including a torsion shaft, the two torsion shafts are respectively fixed on the two driving ends, the torsion shaft is rotatably connected to a wobble plate, the wobble plate is connected to a boost assembly, and the boost assembly is further provided with an air distribution assembly on the side away from the wobble plate, the first boost chamber or the second boost chamber is formed between the air distribution assembly and the boost assembly, the air distribution assembly is used to make the first air inlet, the first boost chamber and the first air outlet connected in one direction in sequence, and is also used to make the second air inlet, the second boost chamber and the second air outlet connected in one direction in sequence.

[0016] According to the technical solutions provided in certain embodiments of the present application, the two torsion shafts are arranged in the same direction or in opposite directions on both sides of the driving member.

[0017] 18. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 17, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has two opposite ends, and said bolt has two opposite ends. said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has two opposite ends. The first sub-pump body and the second sub-pump body are respectively connected to the two driving ends, so that the first boost chamber draws air from the first air inlet and pressurized into the first boost gas, and the second boost chamber draws air from the second air inlet and pressurized into the second boost gas, and then the first boost gas and the second boost gas are output together through the first air outlet and the second air outlet, respectively. The first sub-pump body and the second sub-pump body are driven simultaneously by a driving member with dual driving ends to form a double-headed air pump. Compared with the traditional air pump with only a single pump body, the double-headed air pump can maximize the use of the kinetic energy of the driving member and improve the energy utilization efficiency. By integrating the output ends of the first air outlet and the second air outlet into the third air outlet, the air path of the first sub-pump body and the air path of the second sub-pump body are connected in parallel, which increases the output gas volume of the double-headed air pump while occupying less space, thereby making the double-headed air pump applicable to more scenarios.

[0018] It should be understood that the description of technical features, technical solutions, beneficial effects or similar language in this application does not imply that all features and advantages can be realized in any single embodiment. On the contrary, it is understood that the description of a feature or beneficial effect means that a specific technical feature, technical solution or beneficial effect is included in at least one embodiment. Therefore, the description of a technical feature, technical solution or beneficial effect in this specification does not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions and beneficial effects described in the present embodiment can also be combined in any appropriate manner. Those skilled in the art will understand that the embodiment can be implemented without one or more specific technical features, technical solutions or beneficial effects of a specific embodiment. In other embodiments, additional technical features and beneficial effects can also be identified in specific embodiments that do not embody all embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 A side view of a dual-head air pump with parallel air paths provided in an embodiment of the present application;

[0021] Figure 2 An exploded view of a dual-head air pump with parallel air paths provided in an embodiment of the present application;

[0022] Figure 3 A side cross-sectional view of a first sub-pump body and a second sub-pump body of a dual-head air pump with parallel air paths provided by an embodiment of the present application, with the air paths of the first sub-pump body and the second sub-pump body directed in opposite directions;

[0023] Figure 4 A side cross-sectional view of a first sub-pump body and a second sub-pump body of a dual-head air pump with parallel air paths provided by an embodiment of the present application, with the air paths of the first sub-pump body and the second sub-pump body in the same overall direction;

[0024] Figure 5 and Figure 6 A side sectional view of a dual-head air pump with parallel air paths provided in an embodiment of the present application, wherein the air paths are externally located;

[0025] Figure 7 A side cross-sectional view of a double-head air pump provided in an embodiment of the present application with air paths connected in parallel and a first sub-pump body and a second sub-pump body with air paths in opposite directions overall and a third muffler chamber provided;

[0026] Figure 8This is a side sectional view of a double-head air pump with parallel air paths provided in an embodiment of the present application, in which the air paths of the first and second sub-pump bodies have the same overall direction and a third silencer chamber is provided.

[0027] The text annotations in the figure represent:

[0028] 1. First sub-pump body; 2. Second sub-pump body; 3. Driving member; 11. First base; 12. First cover; 21. Second base; 22. Second cover; 31. Torsion shaft; 32. Swing plate; 33. Boosting assembly; 34. Fixing seat; 35. Air distribution cushion; 36. Upper air distribution layer; 37. Lower air distribution layer; 38. Umbrella nail; 39. Clip; 101. First air inlet; 102. First air outlet; 103. First boosting chamber; 201. Second air inlet; 202. Second air outlet; 203. Second boosting chamber; 301. Third air outlet; 302. First air pipe; 303. Second air pipe; 331. Leather cup; 401. First silencer chamber; 402. Second silencer chamber; 403. Third silencer chamber. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The description in this section is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present application. Specifically, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present invention.

[0030] It should be noted that similar reference numerals and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined or explained in subsequent figures. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0031] As mentioned in the background technology, in order to solve the problems in the prior art, this embodiment provides a dual-head air pump with parallel air paths, comprising:

[0032] A driving member 3, the driving member 3 having two driving ends;

[0033] The first sub-pump body 1 has a first silencing chamber 401 therein, and is provided with at least one first air inlet 101. The at least one first air inlet 101 is unidirectionally connected to at least one first pressurizing chamber 103. The at least one first pressurizing chamber 103 is unidirectionally connected to at least one first air outlet, and the first air outlet passes through the first silencing chamber 401.

[0034] The second sub-pump body 2 is provided with a second silencer chamber 402, on which at least one second air inlet 201 is opened, and the at least one second air inlet 201 is unidirectionally connected to at least one second boosting chamber 203, and the at least one second boosting chamber 203 is unidirectionally connected to at least one second air outlet, and the second air outlet passes through the second silencer chamber 402, and the free end of the first air outlet and the free end of the second air outlet are commonly connected to the third air outlet 301;

[0035] The first sub-pump body 1 and the second sub-pump body 2 are respectively connected to the two driving ends, so that the first boost chamber 103 is sucked in and pressurized into the first boost gas by the first air inlet 101, and the second boost chamber 203 is sucked in and pressurized into the second boost gas by the second air inlet 201, and then the first boost gas and the second boost gas are respectively output together through the first air outlet and the second air outlet and the third air outlet 301.

[0036] like Figure 1 As shown, the driving member 3 adopts a double-output shaft motor for providing torque and speed for the first sub-pump body 1 and the second sub-pump body 2. The first sub-pump body 1 and the second sub-pump body 2 are respectively arranged on both sides of the driving member 3 and are respectively connected to the two ends of the driving shaft of the driving member 3. The first silencer chamber 401 and the second silencer chamber 402 are used to eliminate the noise generated by the flow of gas in the sub-pump body after pressurization. The first sub-pump body 1 and the second sub-pump body 2 are driven by the driving member 3 at the same time to make the first boosting chamber 103 and the second boosting chamber 203 repeatedly contract and expand. When the first boosting chamber 103 expands, the first air inlet 101 is connected to the first boosting chamber 103, and the gas passes through the first The air inlet 101 enters the first boost chamber 103. When the first boost chamber 103 contracts, the first boost chamber 103 is connected to the first air outlet, and the pressurized gas enters the first air outlet and passes through the first silencer chamber 401 at the same time. When the second boost chamber 203 expands, the second air inlet 201 is connected to the second boost chamber 203, and the gas enters the second boost chamber 203 through the second air inlet 201. When the second boost chamber 203 contracts, the second boost chamber 203 is connected to the second air outlet, and the pressurized gas enters the second air outlet and passes through the second silencer chamber 402 at the same time. The gases in the first air outlet and the second air outlet are both output from the third air outlet 301.

[0037] A double-headed air pump is formed by simultaneously driving the first sub-pump body 1 and the second sub-pump body 2 by a driving member 3 with dual driving ends. Compared with a traditional air pump with only a single pump body, the double-headed air pump can maximize the use of the kinetic energy of the driving member 3 and improve the efficiency of energy use. By integrating the output ends of the first air outlet and the second air outlet into the third air outlet 301, the air path of the first sub-pump body 1 and the air path of the second sub-pump body 2 are connected in parallel, which increases the air output of the double-headed air pump while taking up less space, thereby making the double-headed air pump applicable to more scenarios.

[0038] In a preferred embodiment, at least one first air outlet 102 is further provided on the first sub-pump body 1, and the first air outlet 102 is correspondingly connected to the first air outlet path; at least one second air outlet 202 is further provided on the second sub-pump body 2, and the second air outlet 202 is correspondingly connected to the second air outlet path, and the first air outlet 102 and the second air outlet 202 are jointly connected to the third air outlet 301.

[0039] like Figure 3 As shown, the first air outlet 102 is opened at the end of the first air outlet path, which is used to connect the first air outlet path with the outside, and the second air outlet 202 is opened at the end of the second air outlet path, which is used to connect the second air outlet path with the outside; the first air inlet 101 and the first boost chamber 103 are connected by a first air inlet path, and the second air inlet 201 and the second boost chamber 203 are connected by a second air inlet path.

[0040] In a preferred embodiment, the first sub-pump body 1 includes a first base 11 and a first cover body 12 fixed to each other, the first base 11 is arranged on one side of the driving member 3, and a first pump body mechanism is provided between it and the first cover body 12, and the first pump body mechanism has a first boosting chamber 103 inside; the second sub-pump body 2 includes a second base 21 and a second cover body 22 fixed to each other, the second base 21 is arranged on the side of the driving member 3 away from the first base 11, and a second pump body mechanism is provided between it and the second cover body 22, and the second pump body mechanism has a second boosting chamber 203 inside. The first pump body mechanism and the second pump body mechanism can be driven by the driving member 3 to inhale air from the first air inlet 101 and the second air inlet 201 respectively, and output from the third air outlet 301 after pressurization.

[0041] In a preferred embodiment, the first pump body mechanism and the second pump body mechanism have the same structure, both including a torsion shaft 31, the two torsion shafts 31 are respectively fixed on the two driving ends, the torsion shaft 31 is rotatably connected to the wobble plate 32, the wobble plate 32 is connected to the boosting assembly 33, and the boosting assembly 33 is also provided with an air distribution assembly on the side away from the wobble plate 32, and a first boosting chamber 103 or a second boosting chamber 203 is formed between the air distribution assembly and the boosting assembly 33, and the air distribution assembly is used to make the first air inlet 101, the first boosting chamber 103 and the first air outlet 102 connected in one-way in sequence, and is also used to make the second air inlet 201, the second boosting chamber 203 and the second air outlet 202 connected in one-way in sequence.

[0042] like Figure 2 As shown, the first base 11, the first cover 12, the second base 21 and the second cover 22 are all shells with open ends. The first base 11 and the second base 21 are fixed on both sides of the driving member 3 as supporting parts of the pump body. The first cover 12 and the second cover 22 are provided with a silencer air duct on the side close to the driving member 3. The silencer air duct is used to eliminate the airflow noise generated when the first sub-pump body 1 and the second sub-pump body 2 are in operation. The first pump body mechanism and the second pump body mechanism have the same structure, both including a torsion shaft 31, the two torsion shafts 31 are respectively mounted on the two driving ends of the driving member 3, the torsion shaft 31 is rotatably connected to the wobble plate 32, the wobble plate 32 is approximately a cross-shaped structure, and the side away from the torsion shaft 31 is connected to the boost assembly 33, the outer periphery of the boost assembly 33 is provided with a fixed seat 34 for fixing and supporting the boost assembly 33, and the side of the boost assembly 33 away from the wobble plate 32 is provided with a gas distribution assembly. In this embodiment, the boost assembly 33 has 4 leather cups 331, and the volume of the leather cup 331 is the volume of the first boost chamber 103 or the second boost chamber 203.

[0043] The air distribution assembly is provided with a first one-way valve and a second one-way valve. The first one-way valve of the first sub-pump body 1 is connected to the first air inlet path and the first boost chamber 103 in one direction, and the second one-way valve is connected to the first boost chamber 103 and the first air outlet path in one direction. The first one-way valve of the second sub-pump body 2 is connected to the second air inlet path and the second boost chamber 203 in one direction, and the second one-way valve is connected to the second boost chamber 203 and the second air outlet path in one direction. The torsion shaft 31 is driven to rotate by the driving member 3, driving the wobble plate 32 to rotate along the torsion shaft 31. The four leather cups 331 of the boosting assembly 33 are compressed / pulled up in sequence, so that the first sub-pump body 1 draws air from the first air inlet 101, and is pressurized in the first boosting chamber 103 and outputs from the first air outlet 102, and the second sub-pump body 2 draws air from the second air inlet 201, and is pressurized in the second boosting chamber 203 and outputs from the second air outlet 202; the first base 11 and the first cover body 12 can be fastened to each other through four clips 39 to relatively fix the fixing seat 34 and the gas distribution assembly.

[0044] The air distribution assembly includes an upper air distribution layer 36, an air distribution cushion 35 and a lower air distribution layer 37 which are arranged in sequence from the side away from the supercharging assembly 33 to the side close to the supercharging assembly 33. The lower air distribution layer 37 and the upper air distribution layer 36 are used to support the air distribution cushion 35 and assist the air distribution cushion 35 in air distribution. The types of the first one-way valve and the second one-way valve are not particularly limited, and umbrella nails 38 can be used, such as Figure 3 As shown, mounting holes and air inlet holes are correspondingly provided on the lower air distribution layer 37 and the air distribution pad 35. The mounting holes and the air inlet holes are respectively provided in the two pump bodies corresponding to the first boosting chamber 103 and the second boosting chamber 203. The mounting holes are used to set an umbrella nail 38. The umbrella nail 38 includes a nail cap and a nail column. The nail cap is provided on the side of the air distribution component close to the boosting chamber. The air inlet holes can respectively connect the first air inlet path and the first boosting chamber 103, as well as the second air inlet path and the second boosting chamber 203. When the boosting component 33 contracts, the nail cap is pushed by the gas to cover the air inlet hole, so that the air inlet hole is closed. When the boosting component 33 expands, the gas is affected by the pressure and enters the boosting chamber from the side of the air inlet hole away from the nail cap through the air inlet hole to push the nail cap open. The umbrella nail 38 provided above can achieve the function of one-way communication.

[0045] Further, such as Figure 4 As shown, the first one-way valve and the second one-way valve can also be in the form of a pendulum. The pendulum is arranged on the air distribution cushion 35 and can swing in one direction. The lower air distribution layer 37 and the upper air distribution layer 36 are provided with air inlet holes and air outlet holes at positions corresponding to the pendulum. The pendulum can swing in one direction under the gas pressure in a fixed direction, thereby realizing the function of one-way connection.

[0046] In a preferred embodiment, the first air inlet 101 is opened on the first base 11, the first air outlet 102 is opened on the first cover 12, and the first pump body mechanism and the first cover 12 form a first silencer cavity 401, the second air inlet 201 is opened on the second base 21, the second air outlet 202 is opened on the second cover 22, and the second silencer cavity 402 is formed between the second pump body mechanism and the second cover 22; or the first air inlet 101 is opened on the first cover 12, the first air outlet 102 is opened on the first cover 12, and the first air outlet 103 is opened on the first cover 12. 2 is provided on the first base 11, and a first silencing chamber 401 is formed between the first pump body mechanism and the first base 11. The second air inlet 201 is provided on the second cover 22, and the second air outlet 202 is provided on the second base 21, forming a second silencing chamber 402 between the second pump body mechanism and the second base 21. The first air outlet 102 and the second air outlet 202 are connected to the third air outlet 301 through the first air pipe 302, or the second air outlet 202 is connected to the first air outlet path through the first air pipe 302.

[0047] like Figure 3As shown, the double-head air pump can adopt a structure of air intake at both ends and air outlet in the middle, and a first silencer chamber 401 is formed between the air distribution component of the first sub-pump body 1 and the first base 11. When the booster component 33 of the first sub-pump body 1 expands, the first one-way valve in the first sub-pump body 1 opens, and the second one-way valve closes. The gas enters the first booster chamber 103 through the first air inlet 101 on the first cover body 12 through the first air inlet path. When the booster component 33 of the first sub-pump body 1 contracts, the second one-way valve in the first sub-pump body 1 opens, and the first one-way valve closes. After being pressurized, the gas in the first booster chamber 103 is discharged through the first air outlet path to the first base 11. The gas in the second boosting chamber 203 is output from the first air outlet 102; a second silencer chamber 402 is formed between the air distribution component of the second sub-pump body 2 and the second base 21. When the boosting component 33 of the second sub-pump body 2 expands, the first one-way valve in the second sub-pump body 2 opens, and the second one-way valve closes. The gas enters the second boosting chamber 203 through the second air inlet 201 on the second cover body 22 through the second air inlet path. When the boosting component 33 of the second sub-pump body 2 contracts, the second one-way valve in the second sub-pump body 2 opens, the first one-way valve closes, and the gas in the second boosting chamber 203 is pressurized and output through the second air outlet 202 on the second base 21.

[0048] The double-head air pump can adopt a structure with air outlet at both ends and air intake in the middle. A first air inlet path is formed between the air distribution component of the first sub-pump body 1 and the first base 11, and a first air outlet path is formed between the air distribution component of the first sub-pump body 1 and the first cover body 12. When the booster component 33 of the first sub-pump body 1 expands, the first one-way valve in the first sub-pump body 1 opens and the second one-way valve closes. The gas enters the first boosting chamber 103 through the first air inlet path from the first air inlet 101 on the first base 11. When the booster component 33 of the first sub-pump body 1 contracts, the second one-way valve in the first sub-pump body 1 opens and the first one-way valve closes. After being pressurized, the gas in the first boosting chamber 103 enters the first boosting chamber 103 through the first air outlet path and the second one-way valve on the first cover body 12 An air outlet 102 is output; a second air inlet path is formed between the air distribution component of the second sub-pump body 2 and the second base 21, and a second air outlet path is formed between the second sub-pump body 2 and the second cover body 22. When the boosting component 33 of the second sub-pump body 2 expands, the first one-way valve in the second sub-pump body 2 opens and the second one-way valve closes. The gas enters the second boosting chamber 203 through the second air inlet path from the second air inlet 201 on the second base 21. When the boosting component 33 of the second sub-pump body 2 contracts, the second one-way valve in the second sub-pump body 2 opens and the first one-way valve closes. The gas in the second boosting chamber 203 is pressurized and output from the second air outlet 202 on the second cover body 22 through the second air outlet path.

[0049] Both of the above structures can use a three-end connected first air pipe 302 to simultaneously connect the first air outlet 102 and the second air outlet 202, so that the pressurized gas output from the first air outlet 102 and the second air outlet 202 is output together from the third air outlet 301, thereby realizing the parallel connection of the air paths of the first sub-pump body 1 and the second sub-pump body 2;

[0050] like Figure 7 As shown, further, when the double-head air pump adopts a structure of air intake at both ends and air outlet in the middle, an additional first air inlet 101 can be opened on the first cover body 12, and the second air outlet 202 is connected to the first air inlet 101 on the first cover body 12 through the first air pipe 302, so that the pressurized gas output by the first air outlet 102 is also output by the second air outlet 202, thereby realizing the parallel connection of the air paths of the first sub-pump body 1 and the second sub-pump body 2.

[0051] In a preferred embodiment, the first air inlet 101 is opened on the first cover body 12, the first air outlet 102 is opened on the first base 11, and a first silencing chamber 401 is formed between the first pump body mechanism and the first base 11, the second air inlet 201 is opened on the second base 21, the second air outlet 202 is opened on the second cover body 22, and a second silencing chamber 402 is formed between the second pump body mechanism and the second cover body 22; or the first air inlet 101 is opened on the first base 11, the first air outlet 102 is opened on the first cover body 12, and a first silencing chamber 401 is formed between the first pump body mechanism and the first cover body 12, the second air inlet 201 is opened on the second cover body 22, the second air outlet 202 is opened on the second base 21, and a second silencing chamber 402 is formed between the second pump body mechanism and the second base 21, and the first air outlet 102 and the second air outlet 202 are connected to the third air outlet 301 through the first air pipe 302.

[0052] like Figure 4As shown, the double-head air pump can adopt a structure in which the first sub-pump body 1 takes in air at one end away from the driving member 3 and discharges air close to the driving member 3, and the second sub-pump body 2 takes in air at one end close to the driving member 3 and discharges air away from the driving member 3. A first muffler chamber 401 is formed between the gas distribution component of the first sub-pump body 1 and the first base 11. When the booster component 33 of the first sub-pump body 1 expands, the first one-way valve in the first sub-pump body 1 opens and the second one-way valve closes, and the gas enters the first booster chamber 103 through the first air inlet 101 on the first cover body 12 through the first air inlet path. When the booster component 33 of the first sub-pump body 1 contracts, the second one-way valve in the first sub-pump body 1 opens, the first one-way valve closes, and the gas in the first booster chamber 103 After being pressurized, the gas is output from the first air outlet 102 on the first base 11 through the first air outlet route; a second silencing chamber 402 is formed between the gas distribution component of the second sub-pump body 2 and the second cover body 22. When the boosting component 33 of the second sub-pump body 2 expands, the first one-way valve in the second sub-pump body 2 opens, and the second one-way valve closes. The gas enters the second boosting chamber 203 through the second air inlet 201 on the second base 21 through the second air inlet path. When the boosting component 33 of the second sub-pump body 2 contracts, the second one-way valve in the second sub-pump body 2 opens, and the first one-way valve closes. The gas in the second boosting chamber 203 is pressurized and output from the second air outlet 202 on the second cover body 22 through the second air outlet route.

[0053] The double-head air pump can adopt a structure in which the first sub-pump body 1 takes in air at one end close to the driving member 3 and discharges air away from the other end of the driving member 3, and the second sub-pump body 2 takes in air at one end away from the driving member 3 and discharges air close to the other end of the driving member 3. A first silencer chamber 401 is formed between the gas distribution component of the first sub-pump body 1 and the first cover body 12. When the booster component 33 of the first sub-pump body 1 expands, the first one-way valve in the first sub-pump body 1 opens and the second one-way valve closes, and the gas enters the first booster chamber 103 through the first air inlet 101 on the first base 11 through the first air inlet path. When the booster component 33 of the first sub-pump body 1 contracts, the second one-way valve in the first sub-pump body 1 opens, the first one-way valve closes, and the gas in the first booster chamber 103 After being pressurized, the body is output from the first air outlet 102 on the first cover body 12 through the first air outlet route; a second silencer chamber 402 is formed between the gas distribution component of the second sub-pump body 2 and the second base 21. When the boosting component 33 of the second sub-pump body 2 expands, the first one-way valve in the second sub-pump body 2 opens, and the second one-way valve closes. The gas enters the second boosting chamber 203 through the second air inlet 201 on the second cover body 22 through the second air inlet route. When the boosting component 33 of the second sub-pump body 2 contracts, the second one-way valve in the second sub-pump body 2 opens, and the first one-way valve closes. The gas in the second boosting chamber 203 is output from the second air outlet 202 on the second base 21 through the second air outlet route after being pressurized.

[0054] Both of the above structures can also use a first air pipe 302 with three ends connected to simultaneously connect the first air outlet 102 and the second air outlet 202, so that the first pressurized gas output from the first air outlet 102 and the second air outlet 202 are output together from the third air outlet 301, so as to realize the parallel connection of the air paths of the first sub-pump body 1 and the second sub-pump body 2.

[0055] In a preferred embodiment, the first air inlet 101 is opened on the first base 11, the free end of the first air outlet extends out of the first cover 12 and is provided with a first air outlet 102, a first muffler cavity 401 is formed between the first pump body mechanism and the first cover 12, the second air inlet 201 is opened on the second base 21, the second air outlet 202 is opened on the second cover 22, and a second muffler cavity 402 is formed between the second pump body mechanism and the second cover 22; or the first air inlet 101 is opened on the first base On the seat 11, the first air outlet 102 is opened on the first cover body 12, and a first silencer chamber 401 is formed between the first pump body mechanism and the first cover body 12. The second air inlet 201 is opened on the second base 21, and the free end of the second air outlet path extends out of the second cover body 22 and is provided with a second air outlet 202. A second silencer chamber 402 is formed between the second pump body mechanism and the second cover body 22. The first air outlet 102 and the second air outlet 202 are connected to the third air outlet 301 through the first air pipe 302.

[0056] like Figure 5 As shown, the double-head air pump can also adopt an external air path. A first silencer chamber 401 is formed between the air distribution component of the first sub-pump body 1 and the first cover body 12. The first air outlet path extends from the air distribution component of the first sub-pump body 1 to the first cover body 12, and its free end has a first air outlet 102. When the booster component 33 of the first sub-pump body 1 expands, the first one-way valve in the first sub-pump body 1 opens and the second one-way valve closes. The gas enters the first booster chamber 103 through the first air inlet 101 on the first base 11 through the first air inlet path. When the booster component 33 of the first sub-pump body 1 contracts, the second one-way valve in the first sub-pump body 1 opens, the first one-way valve closes, and the gas in the first booster chamber 103 is After being pressurized, it passes through the first cover body 12 through the first outlet path and is output from the first outlet port 102; a second silencer chamber 402 is formed between the gas distribution component of the second sub-pump body 2 and the second cover body 22. When the boosting component 33 of the second sub-pump body 2 expands, the first one-way valve in the second sub-pump body 2 opens and the second one-way valve closes. The gas enters the second boosting chamber 203 through the second air inlet 201 on the second base 21 through the second air inlet path. When the boosting component 33 of the second sub-pump body 2 contracts, the second one-way valve in the second sub-pump body 2 opens and the first one-way valve closes. The gas in the second boosting chamber 203 is pressurized and output from the second air outlet 202 on the second cover body 22 through the second outlet path.

[0057] Or a first silencer chamber 401 is formed between the air distribution component of the first sub-pump body 1 and the first cover body 12. When the booster component 33 of the first sub-pump body 1 expands, the first one-way valve in the first sub-pump body 1 opens and the second one-way valve closes. Gas enters the first booster chamber 103 through the first air inlet path from the first air inlet port 101 on the first base 11. When the booster component 33 of the first sub-pump body 1 contracts, the second one-way valve in the first sub-pump body 1 opens and the first one-way valve closes. The gas in the first booster chamber 103 is pressurized and output through the first air outlet port 102 on the first cover body 12. A silencer chamber 401 is formed between the air distribution component of the second sub-pump body 2 and the second cover body 22. A second silencer chamber 402 is formed, and a second air outlet route extends from the second cover body 22 at the air distribution component of the second sub-pump body 2, and its free end has a second air outlet 202. When the boosting component 33 of the second sub-pump body 2 expands, the first one-way valve in the second sub-pump body 2 opens and the second one-way valve closes. The gas enters the second boosting chamber 203 through the second air inlet 201 on the second base 21 through the second air inlet route. When the boosting component 33 of the second sub-pump body 2 contracts, the second one-way valve in the second sub-pump body 2 opens and the first one-way valve closes. After being pressurized, the gas in the second boosting chamber 203 passes through the second cover body 22 through the second air outlet route and is output from the second air outlet 202.

[0058] Both of the above structures can also use a first air pipe 302 connected at three ends to simultaneously connect the first air outlet 102 and the second air outlet 202, so that the first pressurized gas and the second pressurized gas output from the first air outlet 102 and the second air outlet 202 are output together from the third air outlet 301, thereby realizing parallel connection of the air paths of the first sub-pump body 1 and the second sub-pump body 2.

[0059] In a preferred embodiment, the first air inlet 101 is opened on the first base 11, the free end of the first air outlet extends out of the first cover 12 and is provided with a first air outlet 102, a first silencer chamber 401 is formed between the first pump body mechanism and the first cover 12, the second air inlet 201 is opened on the second base 21, the second air outlet 202 is opened on the second cover 22, a second silencer chamber 402 is formed between the second pump body mechanism and the second cover 22, the first air outlet 102 is connected to the second air outlet through the first air pipe 302, and the second air outlet 202 is connected to the third air outlet through the second air pipe 303. 301; or the first air inlet 101 is opened on the first base 11, the first air outlet 102 is opened on the first cover body 12, and a first silencer chamber 401 is formed between the first pump body mechanism and the first cover body 12, the second air inlet 201 is opened on the second base 21, the free end of the second air outlet path extends out of the second cover body 22 and is provided with a second air outlet 202, a second silencer chamber 402 is formed between the second pump body mechanism and the second cover body 22, the second air outlet 202 is connected to the first air outlet path through the first air pipe 302, and the first air outlet 102 is connected to the third air outlet 301 through the second air pipe 303.

[0060] like Figure 6 As shown, a first silencer chamber 401 is formed between the air distribution component of the first sub-pump body 1 and the first cover body 12, and the first air outlet extends from the first cover body 12 at the air distribution component of the first sub-pump body 1 and is connected to the second air outlet. When the booster component 33 of the first sub-pump body 1 expands, the first one-way valve in the first sub-pump body 1 opens and the second one-way valve closes, and the gas enters the first booster chamber 103 through the first air inlet 101 on the first base 11 through the first air inlet path. When the booster component 33 of the first sub-pump body 1 contracts, the second one-way valve in the first sub-pump body 1 opens and the first one-way valve closes. After being pressurized, the gas in the first booster chamber 103 passes through the first cover body 12 through the first air outlet path. , and is output from the first air outlet 102 to the second air outlet path; a second silencing chamber 402 is formed between the air distribution component of the second sub-pump body 2 and the second cover body 22. When the boosting component 33 of the second sub-pump body 2 expands, the first one-way valve in the second sub-pump body 2 opens, and the second one-way valve closes. The gas enters the second boosting chamber 203 through the second air inlet path from the second air inlet 201 on the second base 21. When the boosting component 33 of the second sub-pump body 2 contracts, the second one-way valve in the second sub-pump body 2 opens, and the first one-way valve closes. The gas in the second boosting chamber 203 passes through the second air outlet path after being pressurized and is output from the second air outlet 202 on the second cover body 22 together with the first pressurized gas.

[0061] By using the first air pipe 302 to connect the first air outlet 102 and the second air outlet, and by using the second air pipe 303 to connect the second air outlet 202 and the third air outlet 301, the first pressurized gas and the second pressurized gas output from the first air outlet 102 and the second air outlet 202 are output together from the third air outlet 301, so as to realize the parallel connection of the air paths of the first sub-pump body 1 and the second sub-pump body 2.

[0062] Or a second silencer chamber 402 is formed between the air distribution component of the second sub-pump body 2 and the second cover body 22, and the second air outlet extends from the second cover body 22 at the air distribution component of the second sub-pump body 2 and is connected to the first air outlet. When the booster component 33 of the second sub-pump body 2 expands, the first one-way valve in the second sub-pump body 2 opens, the second one-way valve closes, and the gas enters the second boosting chamber 203 through the second air inlet 201 on the second base 21 through the second air inlet path. When the booster component 33 of the second sub-pump body 2 contracts, the second one-way valve in the second sub-pump body 2 opens, the first one-way valve closes, and the gas in the second boosting chamber 203 is pressurized and passes through the second cover body 22 through the second air outlet path. , and is output from the second air outlet 202 to the first air outlet path; a first silencing chamber 401 is formed between the air distribution component of the first sub-pump body 1 and the first cover body 12. When the boosting component 33 of the first sub-pump body 1 expands, the first one-way valve in the first sub-pump body 1 opens and the second one-way valve closes. The gas enters the first boosting chamber 103 through the first air inlet path from the first air inlet 101 on the first base 11. When the boosting component 33 of the first sub-pump body 1 contracts, the second one-way valve in the first sub-pump body 1 opens and the first one-way valve closes. The gas in the first boosting chamber 103 passes through the first air outlet path after being pressurized and is discharged from the first air outlet 102 on the first cover body 12 together with the second pressurized gas.

[0063] By using the first air pipe 302 to connect the second air outlet 202 and the first air outlet path, and by using the second air pipe 303 to connect the first air outlet 102 and the third air outlet 301, the first pressurized gas and the second pressurized gas output from the first air outlet 102 and the second air outlet 202 are output together from the third air outlet 301, so as to realize the parallel connection of the air paths of the first sub-pump body 1 and the second sub-pump body 2.

[0064] In a preferred embodiment, a third silencing chamber 403 is further provided on the first air pipe 302 .

[0065] like Figure 7 and Figure 8 As shown, a third silencing chamber 403 may also be provided outside the sub-pump body. The third silencing chamber 403 is provided on the first air pipe 302 to form a buffer space for the pressurized gas, which can eliminate the gas noise generated by the gas when the pressurized gas passes through.

[0066] In a preferred embodiment, the two torsion shafts 31 are arranged on both sides of the driving member 3 in the same direction or in opposite directions.

[0067] like Figure 7As shown, by arranging two twisting axes 31 at both ends of the driving member 3 in the same direction or opposite directions, the driving member 3 can avoid driving the first sub-pump body 1 and the second sub-pump body 2 to cause deviation when in use, making the double-head air pump more stable; in actual use, the angle between the two projections of the two torsion axes 31 in the axial direction of the driving member 3 can be 0°±15° or 180°±15°.

[0068] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can also make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A double-head air pump with parallel air paths, characterized in that: include: A driving member (3), wherein the driving member (3) has two driving ends; A first sub-pump body (1), wherein a first muffler chamber (401) is provided in the first sub-pump body (1), and at least one first air inlet (101) is provided on the first sub-pump body, wherein the at least one first air inlet (101) is unidirectionally connected to at least one first pressurizing chamber (103), and the at least one first pressurizing chamber (103) is unidirectionally connected to at least one first air outlet, and the first air outlet passes through the first muffler chamber (401); A second sub-pump body (2), wherein a second silencer chamber (402) is provided in the second sub-pump body (2), and at least one second air inlet (201) is provided thereon, at least one second air inlet (201) is unidirectionally connected to at least one second boost chamber (203), at least one second boost chamber (203) is unidirectionally connected to at least one second air outlet, the second air outlet passes through the second silencer chamber (402), and the free ends of the first air outlet and the second air outlet are commonly connected to a third air outlet (301); The first sub-pump body (1) and the second sub-pump body (2) are respectively connected to the two driving ends, so that the first boosting chamber (103) is sucked in and pressurized into the first boosting gas by the first air inlet (101), and the second boosting chamber (203) is sucked in and pressurized into the second boosting gas by the second air inlet (201), and then the first boosting gas and the second boosting gas are respectively outputted through the first air outlet and the second air outlet to the third air outlet (301).

2. A double-head air pump with parallel air paths according to claim 1, characterized in that: The first sub-pump body (1) is further provided with at least one first air outlet (102), and the first air outlet (102) is correspondingly connected to the first air outlet path; the second sub-pump body (2) is further provided with at least one second air outlet (202), and the second air outlet (202) is correspondingly connected to the second air outlet path, and the first air outlet (102) and the second air outlet (202) are jointly connected to the third air outlet (301).

3. A double-head air pump with parallel air paths according to claim 2, characterized in that: The first sub-pump body (1) includes a first base (11) and a first cover (12) fixed to each other, the first base (11) being arranged on one side of the driving member (3), a first pump body mechanism being arranged between the first base (11) and the first cover (12), and the first pump body mechanism having the first boosting chamber (103) therein; the second sub-pump body (2) includes a second base (21) and a second cover (22) fixed to each other, the second base (21) being arranged on the side of the driving member (3) away from the first base (11), a second pump body mechanism being arranged between the second base (21) and the second cover (22), and the second pump body mechanism having the second boosting chamber (203) therein, the first pump body mechanism and the second pump body mechanism being able to inhale air respectively through the first air inlet (101) and the second air inlet (201) under the drive of the driving member (3), and output air through the third air outlet (301) after boosting.

4. A double-head air pump with parallel air paths according to claim 3, characterized in that: The first air inlet (101) is provided on the first base (11), the first air outlet (102) is provided on the first cover (12), and the first silencing cavity (401) is formed between the first pump body mechanism and the first cover (12); the second air inlet (201) is provided on the second base (21), the second air outlet (202) is provided on the second cover (22), and the second silencing cavity (402) is formed between the second pump body mechanism and the second cover (22); or the first air inlet (101) is provided on the first cover (12), the first air outlet (102) is provided on the second base (21), the second air outlet (202) is provided on the second cover (22), and the second silencing cavity (402) is formed between the second pump body mechanism and the second cover (22); On the first base (11), the first silencer cavity (401) is formed between the first pump body mechanism and the first base (11), the second air inlet (201) is opened on the second cover (22), the second air outlet (202) is opened on the second base (21), and the second silencer cavity (402) is formed between the second pump body mechanism and the second base (21), the first air outlet (102) and the second air outlet (202) are connected to the third air outlet (301) through the first air pipe (302), or the second air outlet (202) is connected to the first air outlet path through the first air pipe (302).

5. A double-head air pump with parallel air paths according to claim 3, characterized in that: The first air inlet (101) is provided on the first cover (12), the first air outlet (102) is provided on the first base (11), the first silencing chamber (401) is formed between the first pump body mechanism and the first base (11), the second air inlet (201) is provided on the second base (21), the second air outlet (202) is provided on the second cover (22), the second silencing chamber (402) is formed between the second pump body mechanism and the second cover (22); or the first air inlet (101) is provided on the first base (11) The first air outlet (102) is provided on the first cover (12), and the first silencer cavity (401) is formed between the first pump body mechanism and the first cover (12); the second air inlet (201) is provided on the second cover (22), and the second air outlet (202) is provided on the second base (21), and the second silencer cavity (402) is formed between the second pump body mechanism and the second base (21); the first air outlet (102) and the second air outlet (202) are connected to the third air outlet (301) through the first air pipe (302).

6. A double-head air pump with parallel air paths according to claim 3, characterized in that: The first air inlet (101) is provided on the first base (11), the free end of the first air outlet extends out of the first cover (12) and is provided with the first air outlet (102), the first silencing chamber (401) is formed between the first pump body mechanism and the first cover (12), the second air inlet (201) is provided on the second base (21), the second air outlet (202) is provided on the second cover (22), and the second silencing chamber (402) is formed between the second pump body mechanism and the second cover (22); or the first air inlet (101) is provided on the first base (11) The first air outlet (102) is provided on the first cover (12), the first silencer cavity (401) is formed between the first pump body mechanism and the first cover (12), the second air inlet (201) is provided on the second base (21), the free end of the second air outlet path extends out of the second cover (22) and is provided with the second air outlet (202), the second silencer cavity (402) is formed between the second pump body mechanism and the second cover (22), and the first air outlet (102) and the second air outlet (202) are connected to the third air outlet (301) through the first air pipe (302).

7. A double-head air pump with parallel air paths according to claim 3, characterized in that: The first air inlet (101) is provided on the first base (11), the free end of the first air outlet extends out of the first cover (12) and is provided with the first air outlet (102), the first silencer cavity (401) is formed between the first pump body mechanism and the first cover (12), the second air inlet (201) is provided on the second base (21), the second air outlet (202) is provided on the second cover (22), the second silencer cavity (402) is formed between the second pump body mechanism and the second cover (22), the first air outlet (102) is connected to the second air outlet via a first air pipe (302), and the second air outlet (202) is connected to the third air outlet (301) via a second air pipe (303); or The first air inlet (101) is provided on the first base (11), the first air outlet (102) is provided on the first cover (12), the first silencer cavity (401) is formed between the first pump body mechanism and the first cover (12), the second air inlet (201) is provided on the second base (21), the free end of the second air outlet path extends out of the second cover (22) and is provided with the second air outlet (202), the second silencer cavity (402) is formed between the second pump body mechanism and the second cover (22), the second air outlet (202) is connected to the first air outlet path through the first air pipe (302), and the first air outlet (102) is connected to the third air outlet (301) through the second air pipe (303).

8. A dual-head air pump with parallel air paths according to any one of claims 4 to 7, characterized in that: A third silencing chamber (403) is also provided on the first air pipe (302).

9. A double-head air pump with parallel air paths according to claim 8, characterized in that: The first pump body mechanism and the second pump body mechanism have the same structure, both comprising a torsion shaft (31), the two torsion shafts (31) being fixed on the two driving ends respectively, the torsion shaft (31) being rotatably connected to a wobble plate (32), the wobble plate (32) being connected to a boost assembly (33), the boost assembly (33) being further provided with an air distribution assembly on a side away from the wobble plate (32), the first boost chamber (103) or the second boost chamber (203) being formed between the air distribution assembly and the boost assembly (33), the air distribution assembly being used to sequentially connect the first air inlet (101), the first boost chamber (103) and the first air outlet (102) in one-way communication, and also being used to sequentially connect the second air inlet (201), the second boost chamber (203) and the second air outlet (202) in one-way communication.

10. A double-head air pump according to claim 9, characterized in that: The two torsion shafts (31) are arranged on both sides of the driving member (3) in the same direction or in opposite directions.

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